@import"https://fonts.googleapis.com/css2?family=Newsreader:ital,opsz,wght@0,6..72,400;0,6..72,500;0,6..72,600;0,6..72,700;0,6..72,800;1,6..72,400;1,6..72,500&display=swap";.nb-wrap[data-v-b5e54191]{position:relative;display:inline-flex;align-items:center;margin-right:8px}.nb-btn[data-v-b5e54191]{position:relative;display:inline-flex;align-items:center;justify-content:center;width:32px;height:32px;border-radius:8px;background:transparent;border:1px solid var(--vp-c-divider);color:var(--vp-c-text-2);cursor:pointer;transition:color .15s,border-color .15s}.nb-btn[data-v-b5e54191]:hover{color:var(--vp-c-text-1);border-color:var(--vp-c-text-3)}.nb-dot[data-v-b5e54191]{position:absolute;top:-4px;right:-4px;min-width:16px;height:16px;padding:0 4px;border-radius:999px;background:#ef4444;color:#fff;font-size:10.5px;font-weight:600;line-height:16px;text-align:center;letter-spacing:0}.nb-panel[data-v-b5e54191]{position:absolute;top:40px;right:0;width:320px;max-width:92vw;background:var(--vp-c-bg, #fff);border:1px solid var(--vp-c-divider);border-radius:12px;box-shadow:var(--shadow-4);padding:6px;z-index:200}.nb-head[data-v-b5e54191]{display:flex;justify-content:space-between;align-items:baseline;padding:8px 10px 10px;border-bottom:1px solid var(--vp-c-divider);margin-bottom:4px}.nb-head strong[data-v-b5e54191]{font-size:14px;color:var(--vp-c-text-1)}.nb-hint[data-v-b5e54191]{font-size:11.5px;color:var(--vp-c-text-3)}.nb-list[data-v-b5e54191]{max-height:400px;overflow-y:auto}.nb-empty[data-v-b5e54191]{padding:24px 10px;text-align:center;color:var(--vp-c-text-3);font-size:13px}.nb-item[data-v-b5e54191]{padding:10px;border-radius:8px;cursor:default}.nb-item.clickable[data-v-b5e54191]{cursor:pointer}.nb-item.clickable[data-v-b5e54191]:hover{background:var(--vp-c-bg-soft)}.nb-item.unread[data-v-b5e54191]{background:#6b9e2c14}.nb-title[data-v-b5e54191]{font-size:13.5px;font-weight:600;color:var(--vp-c-text-1)}.nb-body[data-v-b5e54191]{font-size:12.5px;color:var(--vp-c-text-2);margin-top:2px;line-height:1.5}.nb-time[data-v-b5e54191]{font-size:11px;color:var(--vp-c-text-3);margin-top:4px}.nb-fade-enter-active[data-v-b5e54191],.nb-fade-leave-active[data-v-b5e54191]{transition:opacity .15s,transform .15s}.nb-fade-enter-from[data-v-b5e54191],.nb-fade-leave-to[data-v-b5e54191]{opacity:0;transform:translateY(-4px)}.user-nav[data-v-95fab0b9]{display:flex;align-items:center;margin-left:16px}.login-btn[data-v-95fab0b9]{height:34px;padding:0 18px;border:none;border-radius:8px;background:var(--accent-fill, #c4f857);color:var(--accent-ink, #0a0b0f);font-size:13px;font-weight:600;cursor:pointer;transition:background .2s;letter-spacing:.02em}.login-btn[data-v-95fab0b9]:hover{background:var(--accent-fill-hover, #d5ff7a)}.user-menu[data-v-95fab0b9]{position:relative;cursor:pointer}.avatar[data-v-95fab0b9]{position:relative;width:32px;height:32px;border-radius:50%;background:linear-gradient(135deg,#6b9e2c,#5a8426);color:#fff;display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:600;overflow:hidden}.avatar-letter[data-v-95fab0b9]{line-height:1;user-select:none}.avatar-img[data-v-95fab0b9]{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;display:block}.dropdown[data-v-95fab0b9]{position:absolute;top:40px;right:0;width:200px;background:var(--vp-c-bg, #fff);border:1px solid var(--vp-c-divider, #e2e8f0);border-radius:12px;box-shadow:var(--shadow-4);padding:8px;z-index:100}.dark{box-shadow:var(--shadow-4),0 0 0 1px #94a3b814}.dropdown-header[data-v-95fab0b9]{padding:8px 12px 12px;border-bottom:1px solid var(--vp-c-divider, #e2e8f0);margin-bottom:4px}.dropdown-header strong[data-v-95fab0b9]{display:block;font-size:14px;color:var(--vp-c-text-1, #0f172a)}.dropdown-header span[data-v-95fab0b9]{font-size:12px;color:var(--vp-c-text-3, #94a3b8)}.learning-summary[data-v-95fab0b9]{display:grid;grid-template-columns:1fr 1fr 1fr;gap:4px;padding:10px 6px;margin:4px 0 6px;background:linear-gradient(135deg,#6b9e2c14,#c4f85714);border-radius:8px}.dark{background:linear-gradient(135deg,#c4f85712,#6b9e2c17)}.ls-cell[data-v-95fab0b9]{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;text-align:center;min-width:0}.ls-num[data-v-95fab0b9]{font-size:15px;font-weight:700;color:var(--vp-c-brand-1);line-height:1.1;letter-spacing:-.02em;white-space:nowrap;font-variant-numeric:tabular-nums}.dark{color:#c4f857}.ls-label[data-v-95fab0b9]{font-size:10.5px;color:var(--vp-c-text-3, #94a3b8);white-space:nowrap;letter-spacing:.02em}.dropdown-item[data-v-95fab0b9]{display:block;width:100%;padding:8px 12px;border:none;background:none;text-align:left;font-size:14px;color:var(--vp-c-text-1, #0f172a);border-radius:6px;cursor:pointer;text-decoration:none;transition:background .15s}.dropdown-item[data-v-95fab0b9]:hover{background:var(--vp-c-bg-soft, #f8fafc)}.dropdown-item.logout[data-v-95fab0b9]{color:#ef4444}.dropdown-divider[data-v-95fab0b9]{height:1px;background:var(--vp-c-divider, #e2e8f0);margin:4px 0}.dropdown-enter-active[data-v-95fab0b9]{transition:opacity .15s cubic-bezier(.2,0,0,1),transform .15s cubic-bezier(.2,0,0,1)}.dropdown-leave-active[data-v-95fab0b9]{transition:opacity .1s cubic-bezier(.4,0,1,1),transform .1s cubic-bezier(.4,0,1,1)}.dropdown-enter-from[data-v-95fab0b9],.dropdown-leave-to[data-v-95fab0b9]{opacity:0;transform:translateY(-4px)}.site-nav-fixed[data-v-10f78779]{position:sticky;top:0;z-index:100;background:color-mix(in oklab,var(--vp-c-bg) 88%,transparent);backdrop-filter:saturate(140%) blur(8px);-webkit-backdrop-filter:saturate(140%) blur(8px);border-bottom:1px solid var(--vp-c-divider-light);transition:background-color .22s ease,border-color .22s ease}.site-nav-row[data-v-10f78779]{position:relative;height:64px}.ly-brand[data-v-10f78779]{position:absolute;left:24px;top:0;bottom:0;display:inline-flex;align-items:center;color:var(--vp-c-text-1);text-decoration:none;z-index:2}.ly-brand-m[data-v-10f78779]{height:36px;width:auto;display:block;flex-shrink:0;background:transparent}.site-nav-in[data-v-10f78779]{max-width:1280px;margin:0 auto;padding:0 32px;height:64px;display:flex;align-items:center}.ly-nav-c[data-v-10f78779]{display:flex;gap:4px;align-items:center;margin-left:-14px}.ly-nav-c[data-v-10f78779] a{position:relative;font-size:14px;color:var(--vp-c-text-2, #475569);padding:8px 14px;border-radius:8px;white-space:nowrap;flex-shrink:0;text-decoration:none;transition:color .18s ease,background-color .18s ease}.ly-nav-c[data-v-10f78779] a:hover{color:var(--vp-c-text-1, #0f172a);background:var(--vp-c-bg-soft)}.ly-nav-c[data-v-10f78779] a.is-active{color:var(--vp-c-text-1, #0f172a);font-weight:600;text-decoration:underline;text-decoration-thickness:3px;text-decoration-color:var(--vp-c-text-1, #0f172a);text-underline-offset:6px;text-decoration-skip-ink:none}.ly-nav-r[data-v-10f78779]{position:absolute;right:24px;top:0;bottom:0;display:flex;align-items:center;gap:10px;z-index:2}.ly-theme-btn[data-v-10f78779]{width:32px;height:32px;border-radius:8px;border:1px solid var(--vp-c-divider);background:var(--vp-c-bg);color:var(--vp-c-text-2);display:grid;place-items:center;cursor:pointer}.ly-theme-btn[data-v-10f78779]:hover{border-color:var(--vp-c-brand-1);color:var(--vp-c-brand-1)}[data-v-10f78779] a.ly-nav-cta{padding:8px 16px;border-radius:8px;background:var(--accent-fill, #c4f857);color:#0a0b0f;font-weight:600;font-size:13px;text-decoration:none;white-space:nowrap}[data-v-10f78779] a.ly-nav-cta:hover{background:var(--accent-fill-hover, var(--vp-c-brand-2))}.ly-nav-login[data-v-10f78779]{background:var(--accent-fill, #c4f857);color:#0a0b0f;border:none;padding:8px 16px;border-radius:8px;font-weight:600;cursor:pointer;font-size:13px}.ly-nav-login[data-v-10f78779]:hover{background:var(--accent-fill-hover, var(--vp-c-brand-2))}@media(max-width:1380px){.site-nav-row[data-v-10f78779]{display:flex;align-items:center;padding:0 24px;gap:24px}.ly-brand[data-v-10f78779]{position:static;flex-shrink:0}.site-nav-in[data-v-10f78779]{margin:0;padding:0;max-width:none;flex:1}.ly-nav-r[data-v-10f78779]{position:static;margin-left:auto}}@media(max-width:720px){.site-nav-row[data-v-10f78779]{padding:0 16px;gap:12px}.ly-nav-c[data-v-10f78779]{display:none}}.lm-overlay[data-v-55a90bf3]{position:fixed;inset:0;background:#0f172a99;backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);display:flex;align-items:center;justify-content:center;z-index:999;padding:20px}.lm-card[data-v-55a90bf3]{position:relative;width:400px;max-width:100%;background:var(--vp-c-bg, #fff);border:1px solid var(--vp-c-divider, rgba(15,23,42,.08));border-radius:20px;padding:0 32px 28px;overflow:hidden;box-shadow:0 0 0 1px #6b9e2c0f,var(--shadow-5)}.lm-close[data-v-55a90bf3]{position:absolute;top:16px;right:16px;width:32px;height:32px;display:flex;align-items:center;justify-content:center;background:none;border:none;color:var(--vp-c-text-3, #94a3b8);cursor:pointer;border-radius:8px;transition:background .15s cubic-bezier(.2,0,0,1),color .15s cubic-bezier(.2,0,0,1)}.lm-close[data-v-55a90bf3]:hover{background:var(--vp-c-bg-soft, #f8fafc);color:var(--vp-c-text-1, #0f172a)}.lm-brand[data-v-55a90bf3]{text-align:center;padding:28px 0 24px}.lm-owl[data-v-55a90bf3]{display:inline-flex;margin-bottom:16px}.lm-title[data-v-55a90bf3]{font-size:22px;font-weight:800;color:var(--vp-c-text-1, #0f172a);margin:0 0 6px;letter-spacing:-.02em}.lm-subtitle[data-v-55a90bf3]{font-size:14px;color:var(--vp-c-text-3, #94a3b8);margin:0}.lm-form[data-v-55a90bf3]{margin-bottom:8px}.lm-field[data-v-55a90bf3]{margin-bottom:16px}.lm-label[data-v-55a90bf3]{display:block;font-size:13px;font-weight:600;color:var(--vp-c-text-2, #475569);margin-bottom:6px;letter-spacing:.01em}.lm-input-wrap[data-v-55a90bf3]{display:flex;align-items:stretch;border:1.5px solid var(--vp-c-divider, #e2e8f0);border-radius:12px;overflow:hidden;transition:border-color .2s,box-shadow .2s;background:var(--vp-c-bg, #fff)}.lm-input-wrap[data-v-55a90bf3]:focus-within{border-color:#6b9e2c;box-shadow:0 0 0 3px #6b9e2c1f}.lm-input-prefix[data-v-55a90bf3]{display:flex;align-items:center;padding:0 12px;font-size:14px;font-weight:600;color:var(--vp-c-text-3, #94a3b8);background:var(--vp-c-bg-soft, #f8fafc);border-right:1.5px solid var(--vp-c-divider, #e2e8f0);user-select:none}.lm-input[data-v-55a90bf3]{flex:1;height:46px;border:none;padding:0 14px;font-size:15px;font-weight:500;color:var(--vp-c-text-1, #0f172a);background:transparent;outline:none;letter-spacing:.02em}.lm-input[data-v-55a90bf3]::placeholder{color:var(--vp-c-text-3, #94a3b8);font-weight:400}.lm-code-input[data-v-55a90bf3]{border:1.5px solid var(--vp-c-divider, #e2e8f0);border-radius:12px;background:var(--vp-c-bg, #fff);transition:border-color .2s,box-shadow .2s;letter-spacing:.15em}.lm-code-input[data-v-55a90bf3]:focus{border-color:#6b9e2c;box-shadow:0 0 0 3px #6b9e2c1f}.lm-code-row[data-v-55a90bf3]{display:flex;gap:10px}.lm-code-row .lm-code-input[data-v-55a90bf3]{flex:1}.lm-resend[data-v-55a90bf3]{height:46px;padding:0 16px;border:1.5px solid var(--vp-c-divider, #e2e8f0);border-radius:12px;background:var(--vp-c-bg-soft, #f8fafc);color:var(--vp-c-text-2, #475569);font-size:13px;font-weight:500;cursor:pointer;white-space:nowrap;transition:border-color .15s cubic-bezier(.2,0,0,1),color .15s cubic-bezier(.2,0,0,1),opacity .15s cubic-bezier(.2,0,0,1);flex-shrink:0}.lm-resend[data-v-55a90bf3]:hover:not(:disabled){border-color:#6b9e2c;color:#6b9e2c}.lm-resend[data-v-55a90bf3]:disabled{opacity:.5;cursor:not-allowed}.lm-sent-hint[data-v-55a90bf3]{font-size:13px;color:var(--vp-c-text-2, #475569);margin-bottom:16px;padding:10px 14px;background:#6b9e2c0f;border-radius:10px;border:1px solid rgba(107,158,44,.12)}.lm-sent-hint strong[data-v-55a90bf3]{color:var(--vp-c-text-1, #0f172a);font-weight:600}.lm-change[data-v-55a90bf3]{background:none;border:none;color:#6b9e2c;font-size:13px;cursor:pointer;padding:0;margin-left:4px;font-weight:500}.lm-change[data-v-55a90bf3]:hover{text-decoration:underline}.lm-btn[data-v-55a90bf3]{width:100%;height:46px;display:flex;align-items:center;justify-content:center;gap:6px;border:none;border-radius:12px;background:#6b9e2c;color:#fff;font-size:15px;font-weight:600;cursor:pointer;transition:background .18s cubic-bezier(.2,0,0,1),box-shadow .22s cubic-bezier(.2,0,0,1),transform .18s cubic-bezier(.2,0,0,1);margin-top:4px;letter-spacing:.02em;box-shadow:0 2px 6px #6b9e2c24}.lm-btn[data-v-55a90bf3]:hover:not(.disabled){background:#568620;box-shadow:0 8px 22px #6b9e2c4d,0 2px 6px #6b9e2c2e;transform:translateY(-1px)}.lm-btn[data-v-55a90bf3]:active:not(.disabled){transform:translateY(0);transition-duration:.08s}.lm-btn.disabled[data-v-55a90bf3]{opacity:.45;cursor:not-allowed;box-shadow:none}.lm-btn svg[data-v-55a90bf3]{transition:transform .22s cubic-bezier(.2,0,0,1)}.lm-btn:hover:not(.disabled) svg[data-v-55a90bf3]{transform:translate(3px)}.lm-error[data-v-55a90bf3]{display:flex;align-items:center;gap:6px;margin-top:12px;padding:10px 14px;background:#ef44440f;border:1px solid rgba(239,68,68,.1);color:#ef4444;border-radius:10px;font-size:13px;font-weight:500}.lm-footer[data-v-55a90bf3]{display:flex;align-items:center;justify-content:center;gap:5px;margin-top:20px;padding-top:16px;border-top:1px solid var(--vp-c-divider, rgba(15,23,42,.06));font-size:12px;color:var(--vp-c-text-3, #94a3b8)}.lm-footer svg[data-v-55a90bf3]{opacity:.6}.modal-enter-active[data-v-55a90bf3]{transition:opacity .25s var(--ease-out)}.modal-enter-active .lm-card[data-v-55a90bf3]{transition:transform .3s cubic-bezier(.34,1.56,.64,1),opacity .25s var(--ease-out)}.modal-leave-active[data-v-55a90bf3]{transition:opacity .18s cubic-bezier(.4,0,1,1)}.modal-leave-active .lm-card[data-v-55a90bf3]{transition:transform .18s cubic-bezier(.4,0,1,1),opacity .18s cubic-bezier(.4,0,1,1)}.modal-enter-from[data-v-55a90bf3]{opacity:0}.modal-enter-from .lm-card[data-v-55a90bf3]{opacity:0;transform:scale(.92) translateY(10px)}.modal-leave-to[data-v-55a90bf3]{opacity:0}.modal-leave-to .lm-card[data-v-55a90bf3]{opacity:0;transform:scale(.96)}.lm-honeypot[data-v-55a90bf3]{position:absolute;left:-9999px;top:-9999px;width:1px;height:1px;overflow:hidden}.lm-captcha-hidden-trigger[data-v-55a90bf3]{position:absolute;left:-9999px;top:-9999px;width:1px;height:1px;border:0;padding:0;background:transparent;overflow:hidden}.lm-captcha-mount[data-v-55a90bf3]{min-height:0}.lm-captcha-hint[data-v-55a90bf3]{margin-top:10px;padding:8px 12px;font-size:12.5px;color:var(--vp-c-text-2);background:#eab30814;border:1px solid rgba(234,179,8,.25);border-radius:8px}@media(max-width:480px){.lm-overlay[data-v-55a90bf3]{padding:12px}.lm-card[data-v-55a90bf3]{padding:0 20px 22px;border-radius:16px}.lm-brand[data-v-55a90bf3]{padding:24px 0 20px}.lm-title[data-v-55a90bf3]{font-size:20px}.lm-input-prefix[data-v-55a90bf3]{padding:0 10px;font-size:13px}.lm-input[data-v-55a90bf3]{height:44px;font-size:14px;padding:0 12px}.lm-btn[data-v-55a90bf3]{height:44px;font-size:14px}.lm-resend[data-v-55a90bf3]{height:44px;padding:0 12px;font-size:12px}}.route-progress{position:fixed;top:0;left:0;height:2px;background:linear-gradient(90deg,var(--accent-fill, #c4f857),#6366f1);z-index:9999;pointer-events:none;opacity:0;transition:width .2s ease-out,opacity .28s ease-out}.route-progress.active{opacity:1}.route-progress.done{opacity:0}:root{--vp-c-brand-1: #3b7e00;--vp-c-brand-2: #2e6700;--vp-c-brand-3: #224f00;--vp-c-brand-soft: rgba(196, 248, 87, .22);--accent-fill: #c4f857;--accent-fill-hover: #d5ff7a;--accent-ink: #0a0b0f;--home-bg: #fafafa;--home-bg-alt: #f4f4f4;--home-card-bg: #ffffff;--home-card-border: #ebebeb;--home-card-shadow: 0 1px 2px rgba(10, 10, 10, .04);--home-card-shadow-hover: 0 8px 24px rgba(10, 10, 10, .08);--shadow-1: 0 1px 2px rgba(15, 23, 42, .04);--shadow-2: 0 2px 6px rgba(15, 23, 42, .05), 0 1px 2px rgba(15, 23, 42, .03);--shadow-3: 0 8px 24px rgba(15, 23, 42, .08), 0 2px 6px rgba(15, 23, 42, .04);--shadow-4: 0 12px 32px rgba(15, 23, 42, .12), 0 4px 10px rgba(15, 23, 42, .06);--shadow-5: 0 24px 60px rgba(15, 23, 42, .2), 0 8px 24px rgba(15, 23, 42, .1);--ease-out: cubic-bezier(.2, 0, 0, 1);--ease-in: cubic-bezier(.4, 0, 1, 1);--ease-io: cubic-bezier(.4, 0, .2, 1);--home-text-1: #0a0a0a;--home-text-2: #525252;--home-text-3: #8b8b8b;--hero-bg: #fafafa;--hero-grid-line: rgba(10, 10, 10, .035);--hero-orb-1: rgba(196, 248, 87, .14);--hero-orb-2: rgba(139, 92, 246, .08);--hero-orb-3: rgba(59, 130, 246, .06);--hero-badge-color: #525252;--hero-badge-border: #ebebeb;--hero-badge-bg: #ffffff;--hero-pulse: #3b7e00;--hero-pulse-shadow: rgba(196, 248, 87, .5);--hero-title-main-from: #0a0a0a;--hero-title-main-to: #262626;--hero-title-accent-from: #3b7e00;--hero-title-accent-mid: #62a827;--hero-title-accent-to: #87c44a;--hero-desc: #525252;--hero-stat-num: #0a0a0a;--hero-stat-label: #8b8b8b;--hero-stat-sep: #ebebeb;--hero-ghost-color: #262626;--hero-ghost-border: #ebebeb;--hero-ghost-bg: #ffffff;--hero-ghost-hover-border: #0a0a0a;--hero-ghost-hover-bg: #ffffff;--hero-nav-brand: #0a0a0a;--hero-nav-link: #525252;--hero-nav-link-hover: #0a0a0a;--hero-nav-icon: #525252;--home-tag-bg: #f0ebff;--home-tag-color: #6f42c1;--home-tag-border: #e9e3ff;--home-feature-icon-bg: rgba(196, 248, 87, .12);--home-divider: #ebebeb;--reader-surface: #ffffff;--reader-surface-alt: #fafafa;--reader-border: #ebebeb;--reader-border-strong: #d4d4d4;--reader-ink: #0a0a0a;--reader-muted: #525252;--reader-muted-2: #8b8b8b;--reader-accent: #3b7e00;--reader-accent-soft: rgba(59, 126, 0, .08);--reader-tip-bg: #f8f6ff;--reader-tip-border: #e9e3ff;--reader-prog-bar: linear-gradient(90deg, #0a0a0a, #6b6b6b);--reader-sans: "Inter", "PingFang SC", "HarmonyOS Sans", system-ui, sans-serif;--reader-mono: "JetBrains Mono", ui-monospace, Menlo, monospace;--ease-out: cubic-bezier(.4, 0, .2, 1)}.dark{--vp-c-brand-1: #c4f857;--vp-c-brand-2: #b4ef45;--vp-c-brand-3: #9ad43e;--vp-c-brand-soft: rgba(196, 248, 87, .16);--accent-fill: #c4f857;--accent-fill-hover: #d5ff7a;--accent-ink: #0a0b0f;--home-bg: #0a0b0f;--home-bg-alt: #0e1016;--home-card-bg: #0e1016;--home-card-border: #1f2430;--home-card-shadow: 0 1px 3px rgba(0, 0, 0, .5);--home-card-shadow-hover: 0 24px 60px rgba(0, 0, 0, .55);--shadow-1: 0 1px 3px rgba(0, 0, 0, .4);--shadow-2: 0 2px 8px rgba(0, 0, 0, .45), 0 1px 3px rgba(0, 0, 0, .3);--shadow-3: 0 10px 28px rgba(0, 0, 0, .5), 0 2px 6px rgba(0, 0, 0, .3);--shadow-4: 0 16px 40px rgba(0, 0, 0, .55), 0 4px 10px rgba(0, 0, 0, .35);--shadow-5: 0 28px 72px rgba(0, 0, 0, .65), 0 10px 28px rgba(0, 0, 0, .45);--home-text-1: #ecedf0;--home-text-2: #a4a9b7;--home-text-3: #5d6478;--hero-bg: #0a0b0f;--hero-grid-line: rgba(255, 255, 255, .04);--hero-orb-1: rgba(196, 248, 87, .08);--hero-orb-2: rgba(139, 92, 246, .08);--hero-orb-3: rgba(59, 130, 246, .06);--hero-badge-color: #a4a9b7;--hero-badge-border: #2a3044;--hero-badge-bg: #0e1016;--hero-pulse: #c4f857;--hero-pulse-shadow: rgba(196, 248, 87, .55);--hero-title-main-from: #ecedf0;--hero-title-main-to: #ecedf0;--hero-title-accent-from: #c4f857;--hero-title-accent-mid: #8de3a3;--hero-title-accent-to: #61dafb;--hero-desc: #a4a9b7;--hero-stat-num: #ecedf0;--hero-stat-label: #a4a9b7;--hero-stat-sep: #1f2430;--hero-ghost-color: #ecedf0;--hero-ghost-border: #2a3044;--hero-ghost-bg: transparent;--hero-ghost-hover-border: #c4f857;--hero-ghost-hover-bg: rgba(196, 248, 87, .05);--hero-nav-brand: #ecedf0;--hero-nav-link: #a4a9b7;--hero-nav-link-hover: #ecedf0;--hero-nav-icon: #a4a9b7;--home-tag-bg: rgba(196, 248, 87, .08);--home-tag-color: #c4f857;--home-tag-border: rgba(196, 248, 87, .22);--home-feature-icon-bg: rgba(196, 248, 87, .08);--home-divider: #1f2430;--reader-surface: #0e1016;--reader-surface-alt: #141722;--reader-border: #1f2430;--reader-border-strong: #2a3044;--reader-ink: #ecedf0;--reader-muted: #a4a9b7;--reader-muted-2: #5d6478;--reader-accent: #c4f857;--reader-accent-soft: rgba(196, 248, 87, .1);--reader-tip-bg: rgba(196, 248, 87, .06);--reader-tip-border: rgba(196, 248, 87, .22);--reader-prog-bar: linear-gradient(90deg, #c4f857, #9ad43e)}html{scroll-behavior:smooth;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;text-rendering:optimizeLegibility;font-optical-sizing:auto}::selection{background:#c4f85773;color:#0a0b0f}.dark ::selection{background:#c4f857;color:#0a0b0f}html{scrollbar-width:thin;scrollbar-color:rgba(15,23,42,.22) transparent}html.dark{scrollbar-color:rgba(196,248,87,.18) transparent}html::-webkit-scrollbar{width:10px;height:10px}html::-webkit-scrollbar-track{background:transparent}html::-webkit-scrollbar-thumb{background:#0f172a2e;border:2px solid transparent;background-clip:content-box;border-radius:999px;transition:background-color .18s cubic-bezier(.2,0,0,1)}html::-webkit-scrollbar-thumb:hover{background:#0f172a52;background-clip:content-box}html.dark::-webkit-scrollbar-thumb{background:#c4f85729;background-clip:content-box}html.dark::-webkit-scrollbar-thumb:hover{background:#c4f85752;background-clip:content-box}html::-webkit-scrollbar-corner{background:transparent}input::placeholder,textarea::placeholder{color:var(--vp-c-text-3);opacity:.65;font-weight:400}input:focus::placeholder,textarea:focus::placeholder{opacity:.45}.dark{--vp-c-bg: #0a0b0f;--vp-c-bg-alt: #0e1016;--vp-c-bg-elv: #141722;--vp-c-bg-soft: #141722;--vp-c-divider: #1f2430;--vp-c-gutter: #0a0b0f;--vp-c-text-1: #ecedf0;--vp-c-text-2: #a4a9b7;--vp-c-text-3: #5d6478;--vp-c-default-1: #1f2430;--vp-c-default-2: #141722;--vp-c-default-3: #0e1016;--vp-c-default-soft: rgba(42, 48, 68, .28)}.VPNav .VPNavBar,.VPNav .VPNavBar .wrapper,.VPNav .VPNavBar .container,.VPNav .VPNavBar .container>.title,.VPNav .VPNavBar .container>.content,.VPNav .VPNavBar .container>.content>.content-body,.VPNavBarTitle,.VPNavBarTitle.has-sidebar{background:transparent!important}.VPNav .VPNavBar{background:#ffffffeb!important;backdrop-filter:saturate(180%) blur(16px)!important;-webkit-backdrop-filter:saturate(180%) blur(16px)!important}.dark .VPNav .VPNavBar{background:#0c0f1aeb!important}.VPNavBar .curtain,.VPNavBar.has-sidebar .curtain{background:transparent!important}.VPNav .VPNavBar .divider{border-bottom:1px solid rgba(15,23,42,.08)!important}.dark .VPNav .VPNavBar .divider{border-bottom-color:#94a3b81a!important}@media(min-width:768px){.VPNavBar .VPNavBarMenu{order:-1!important;flex-grow:0!important;padding-left:20px!important}.VPNavBar .VPNavBarSearch{flex-grow:1!important;display:flex!important;justify-content:flex-end!important;order:0!important;padding-right:12px!important}}.VPNavBarMenuLink{font-weight:500!important;font-size:14px!important;color:var(--vp-c-text-2)!important;position:relative!important;transition:color .2s!important}.VPNavBarMenuLink:after{content:"";position:absolute;bottom:-2px;left:50%;width:0;height:2px;background:var(--vp-c-brand-1);border-radius:1px;transition:width .25s cubic-bezier(.4,0,.2,1),left .25s cubic-bezier(.4,0,.2,1)}.VPNavBarMenuLink:hover{color:var(--vp-c-text-1)!important}.VPNavBarMenuLink:hover:after,.VPNavBarMenuLink.active:after{width:100%;left:0}.VPNavBarMenuLink.active{color:var(--vp-c-brand-1)!important;font-weight:600!important}@media(min-width:768px){.VPNavBar .DocSearch-Button,.VPNavBar .VPNavBarSearch button{min-width:200px!important}}.VPNavBar .DocSearch-Button,.VPNavBar .VPNavBarSearch button{border-radius:10px!important;border:1px solid rgba(15,23,42,.08)!important;background:#0f172a08!important;transition:border-color .18s cubic-bezier(.2,0,0,1),background .18s cubic-bezier(.2,0,0,1),box-shadow .22s cubic-bezier(.2,0,0,1)!important}@media(max-width:767px){.VPNavBar .VPNavBarSearch{flex-grow:0!important;flex-shrink:0!important;padding:0!important;margin-left:auto!important}.VPNavBar .DocSearch-Button,.VPNavBar .VPNavBarSearch button{width:38px!important;min-width:38px!important;height:38px!important;padding:0!important;border-radius:10px!important;justify-content:center!important}.VPNavBar .DocSearch-Button .DocSearch-Button-Placeholder,.VPNavBar .DocSearch-Button .DocSearch-Button-Keys,.VPNavBar .VPNavBarSearch button .DocSearch-Button-Placeholder,.VPNavBar .VPNavBarSearch button .DocSearch-Button-Keys{display:none!important}.VPNavBar .DocSearch-Button-Container{margin:0!important}.VPNavBar .user-nav{margin-left:8px!important}.VPNavBar .VPNavBarHamburger{padding-right:4px!important}}.VPNavBar .DocSearch-Button:hover,.VPNavBar .VPNavBarSearch button:hover{border-color:#0f172a26!important;background:#0f172a0d!important;box-shadow:0 2px 8px #0000000a!important}.dark .VPNavBar .DocSearch-Button,.dark .VPNavBar .VPNavBarSearch button{border-color:#94a3b81a!important;background:#94a3b80a!important}.dark .VPNavBar .DocSearch-Button:hover,.dark .VPNavBar .VPNavBarSearch button:hover{border-color:#94a3b833!important;background:#94a3b814!important}.VPNavBarAppearance:before,.VPNavBarAppearance:after,.VPNavBarExtra:before,.VPNavBar .divider-line{display:none!important}.VPNavBarAppearance .VPSwitch{border-color:transparent!important;background:#0f172a0f!important}.dark .VPNavBarAppearance .VPSwitch{background:#94a3b81a!important}.VPNavBarAppearance .VPSwitch:hover{background:#0f172a1a!important}.dark .VPNavBarAppearance .VPSwitch:hover{background:#94a3b82e!important}.VPNavBarTitle .VPImage.logo,.VPNavBarTitle.has-sidebar .VPImage.logo{height:36px!important;width:auto!important;max-width:none!important}@media(max-width:600px){.VPNavBarTitle,.VPNavBarTitle.has-sidebar{flex-shrink:0!important}.VPNavBarTitle .VPImage.logo,.VPNavBarTitle.has-sidebar .VPImage.logo{height:28px!important}}.book-page .VPNavBar .nav-breadcrumb{order:-2!important;margin-left:0!important;padding-left:0!important;border-left:none!important;flex-shrink:1!important;min-width:0!important}.book-page .VPNavBar .nav-breadcrumb .nbc-section,.book-page .VPNavBar .nav-breadcrumb .nbc-current{flex-shrink:1!important;overflow:hidden!important;text-overflow:ellipsis!important;min-width:0!important}.book-page .VPNavBar .nav-breadcrumb .nbc-book{flex-shrink:0!important}.VPHome .VPHero,.VPHome .VPFeatures{display:none!important}.VPDoc .VPDocFooter,.VPPage .VPFooter,.VPContent+.VPFooter,.Layout>.VPFooter{display:none!important}.reading-progress{position:fixed;top:var(--vp-nav-height);left:0;height:3px;background:linear-gradient(90deg,var(--vp-c-brand-1),var(--vp-c-brand-2));z-index:21;transition:width .1s linear;pointer-events:none;box-shadow:0 0 8px color-mix(in oklab,var(--vp-c-brand-1) 40%,transparent)}@media(min-width:960px){.VPSidebar{top:var(--vp-nav-height)!important;padding-top:12px!important;padding-bottom:24px!important;background:#fafbfd!important;border-right:none!important;box-shadow:1px 0 #0f172a0a}.dark .VPSidebar{background:#0c0f1a80!important;box-shadow:1px 0 #94a3b80f}.VPSidebar .curtain{display:none!important}.VPNavBar.has-sidebar .divider{padding-left:0!important}.VPNavBarTitle.has-sidebar .title{border-bottom-color:transparent!important}}.VPSidebar::-webkit-scrollbar{width:3px}.VPSidebar::-webkit-scrollbar-thumb{background:transparent;border-radius:3px}.VPSidebar:hover::-webkit-scrollbar-thumb{background:#0f172a1a}.dark .VPSidebar:hover::-webkit-scrollbar-thumb{background:#94a3b81f}.VPSidebar::-webkit-scrollbar-track{background:transparent}.VPSidebar .VPSidebarItem.level-0>.item>.text{font-size:11.5px!important;font-weight:600!important;letter-spacing:.03em;color:var(--vp-c-text-3)!important;padding:8px 0 4px}.VPSidebar .VPSidebarItem .text{font-size:13px;line-height:1.5;color:var(--vp-c-text-2);transition:color .15s}.VPSidebar .VPSidebarItem.level-1>.item{border-radius:6px;margin:1px 6px 1px 4px;padding:4px 8px!important;transition:background .15s}.VPSidebar .VPSidebarItem.level-1>.item:hover{background:var(--vp-c-bg-soft)}.VPSidebar .VPSidebarItem.level-1>.item:hover .text{color:var(--vp-c-text-1)}.dark .VPSidebar .VPSidebarItem.level-1>.item:hover{background:#94a3b80f}.VPSidebar .VPSidebarItem.is-active.level-1>.item{background:linear-gradient(90deg,var(--vp-c-brand-soft),transparent 80%);position:relative;border-radius:0 6px 6px 0;box-shadow:inset 0 0 0 1px color-mix(in oklab,var(--vp-c-brand-1) 18%,transparent)}.VPSidebar .VPSidebarItem.is-active.level-1>.item:before{content:"";position:absolute;left:0;top:6px;bottom:6px;width:3px;background:linear-gradient(180deg,var(--vp-c-brand-1),color-mix(in oklab,var(--vp-c-brand-1) 70%,transparent));border-radius:0 2px 2px 0;box-shadow:0 0 8px color-mix(in oklab,var(--vp-c-brand-1) 45%,transparent)}.VPSidebar .VPSidebarItem.is-active>.item .text{font-weight:600!important;color:var(--vp-c-brand-1)!important}.VPSidebar .group+.group{border-top:1px solid var(--vp-c-divider);margin-top:12px;padding-top:12px}.VPSidebar .VPSidebarItem .caret{transition:transform .2s cubic-bezier(.4,0,.2,1)!important}.book-page .vp-doc{font-feature-settings:"kern" 1,"liga" 1,"calt" 1;hanging-punctuation:first last}.book-page .vp-doc h1,.book-page .vp-doc h2,.book-page .vp-doc h3,.book-page .vp-doc h4{text-wrap:balance}.book-page .vp-doc p,.book-page .vp-doc li{text-wrap:pretty}.book-page .vp-doc h1{font-size:28px;font-weight:800;letter-spacing:-.02em;padding-bottom:20px;border-bottom:none;margin-bottom:28px;margin-top:4px;line-height:1.4;color:var(--vp-c-text-1)}.book-page .vp-doc .chapter-cover-label{display:inline-flex;align-items:baseline;gap:10px;margin:0 0 8px;padding:0;font-size:12px;font-weight:700;letter-spacing:.18em;color:transparent;background:linear-gradient(90deg,var(--vp-c-brand-1),var(--vp-c-brand-2));-webkit-background-clip:text;background-clip:text;text-transform:uppercase}.book-page .vp-doc .chapter-cover-label .ccl-en{font-family:ui-monospace,SFMono-Regular,Menlo,monospace}.book-page .vp-doc .chapter-cover-label .ccl-sep{opacity:.5;font-weight:400;letter-spacing:normal}.book-page .vp-doc .chapter-cover-label .ccl-zh{font-family:var(--vp-font-family-base);letter-spacing:.05em;font-size:11.5px}.dark.book-page .vp-doc tbody tr:nth-child(2n) td{background:#ffffff0a}.dark.book-page .vp-doc ul>li:before,.dark.book-page .vp-doc ol>li:before{background:linear-gradient(180deg,#818cf8,#60a5fa)}.dark.book-page .vp-doc h2:after{background:linear-gradient(to right,#818cf8,rgba(129,140,248,.55) 35%,rgba(255,255,255,.12) 75%,transparent)}.dark.book-page .vp-doc h3:before{background:linear-gradient(180deg,#818cf8,#60a5fa)}.dark .kbd-help-overlay{background:#0009}.dark .kbd-help-card{box-shadow:0 24px 60px #0009}.sticky-section{position:fixed;top:var(--vp-nav-height, 60px);left:50%;transform:translate(-50%) translateY(-8px);z-index:19;display:inline-flex;align-items:center;gap:8px;padding:7px 16px 7px 14px;border-radius:999px;background:var(--vp-c-bg);border:1px solid var(--vp-c-divider);box-shadow:var(--shadow-4);font-size:13px;font-weight:600;color:var(--vp-c-text-1);letter-spacing:-.01em;cursor:pointer;max-width:min(720px,calc(100vw - 32px));opacity:0;pointer-events:none;transition:opacity .2s var(--ease-out),transform .2s var(--ease-out);margin-top:8px}.sticky-section.is-visible{opacity:1;pointer-events:auto;transform:translate(-50%) translateY(0)}.sticky-section:hover{border-color:color-mix(in oklab,var(--vp-c-brand-1) 42%,transparent);color:var(--vp-c-brand-1)}.sticky-section .ss-icon{color:var(--vp-c-text-3);font-size:16px;line-height:1;flex-shrink:0}.sticky-section .ss-text{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;min-width:0}.sticky-section .ss-num{flex-shrink:0;padding:2px 8px;border-radius:999px;background:var(--vp-c-bg-soft);color:var(--vp-c-text-3);font-size:10.5px;font-weight:600;font-family:JetBrains Mono,ui-monospace,monospace;letter-spacing:.06em}.sticky-section .ss-num:empty{display:none}.sticky-section .ss-remain{flex-shrink:0;margin-left:4px;padding-left:10px;border-left:1px solid var(--vp-c-divider);color:var(--vp-c-text-3);font-size:11.5px;font-weight:500;letter-spacing:.01em}.sticky-section .ss-remain:empty{display:none;border-left:none;padding-left:0;margin-left:0}html.dark.book-page .sticky-section{background:#0e1016f5!important;border-color:#1f2430!important}html.dark.book-page .sticky-section:hover{border-color:#c4f85773!important;color:var(--jt-accent)!important}html.dark.book-page .sticky-section .ss-num{background:#c4f8571f;color:var(--jt-accent)}html.dark.book-page .sticky-section .ss-icon{color:var(--jt-accent)}.dark .sticky-section{background:#141623f2;backdrop-filter:blur(8px);box-shadow:0 6px 20px #0006}@media(max-width:640px){.sticky-section{font-size:12px;padding:6px 12px;max-width:calc(100vw - 24px)}}@media print{.sticky-section{display:none!important}}.focus-mode-btn{position:fixed;right:22px;bottom:118px;z-index:24;width:40px;height:40px;border-radius:50%;border:1px solid var(--vp-c-divider);background:var(--vp-c-bg);color:var(--vp-c-text-3);cursor:pointer;box-shadow:var(--shadow-3);display:flex;align-items:center;justify-content:center;transition:color .18s var(--ease-out),border-color .18s var(--ease-out),background .18s var(--ease-out),transform .18s var(--ease-out)}.focus-mode-btn:hover{transform:scale(1.05);color:var(--vp-c-brand-1);border-color:color-mix(in oklab,var(--vp-c-brand-1) 45%,transparent)}.focus-mode-btn.is-on{background:linear-gradient(135deg,var(--vp-c-brand-1),var(--vp-c-brand-2));color:#fff;border-color:transparent;box-shadow:0 6px 18px color-mix(in oklab,var(--vp-c-brand-1) 40%,transparent)}@media(max-width:640px){.focus-mode-btn{display:none}}.chapter-listen-btn{position:fixed;right:22px;bottom:70px;z-index:24;width:40px;height:40px;border-radius:50%;border:1px solid var(--vp-c-divider);background:var(--vp-c-bg);color:var(--vp-c-text-3);cursor:pointer;box-shadow:var(--shadow-3);display:flex;align-items:center;justify-content:center;transition:color .18s var(--ease-out),border-color .18s var(--ease-out),background .18s var(--ease-out),transform .18s var(--ease-out)}.chapter-listen-btn:hover{transform:scale(1.05);color:var(--vp-c-brand-1);border-color:color-mix(in oklab,var(--vp-c-brand-1) 45%,transparent)}.chapter-listen-btn .clb-stop{display:none}.chapter-listen-btn.is-speaking{background:linear-gradient(135deg,#f59e0b,#ef4444);color:#fff;border-color:transparent;box-shadow:0 6px 18px #f59e0b66;animation:listen-pulse 1.4s ease-in-out infinite}.chapter-listen-btn.is-speaking .clb-play{display:none}.chapter-listen-btn.is-speaking .clb-stop{display:block}@keyframes listen-pulse{0%,to{box-shadow:0 6px 18px #f59e0b66}50%{box-shadow:0 6px 24px #f59e0ba6}}@media(max-width:640px){.chapter-listen-btn{display:none}}.chapter-listen-btn,.tts-player,.tts-play-btn{display:none!important}.book-page .vp-doc .tts-now{position:relative;background:linear-gradient(90deg,rgba(245,158,11,.08),transparent 40%);border-radius:4px;transition:background .2s var(--ease-out)}.book-page .vp-doc .tts-now:before{content:"";position:absolute;left:-14px;top:4px;bottom:4px;width:3px;border-radius:2px;background:linear-gradient(180deg,#f59e0b,#ef4444);box-shadow:0 0 8px #f59e0b99;animation:tts-rail-pulse 1.2s ease-in-out infinite}@keyframes tts-rail-pulse{0%,to{opacity:.85}50%{opacity:1}}.dark .book-page .vp-doc .tts-now{background:linear-gradient(90deg,rgba(245,158,11,.16),transparent 40%)}.tts-player{position:fixed;bottom:20px;left:50%;transform:translate(-50%) translateY(16px);z-index:30;display:inline-flex;align-items:center;gap:4px;padding:6px 8px;border-radius:999px;background:var(--vp-c-bg);border:1px solid var(--vp-c-divider);box-shadow:var(--shadow-4);opacity:0;pointer-events:none;transition:opacity .22s var(--ease-out),transform .22s var(--ease-out)}.tts-player.is-visible{opacity:1;pointer-events:auto;transform:translate(-50%) translateY(0)}.tts-player button{width:32px;height:32px;border-radius:50%;border:none;background:transparent;color:var(--vp-c-text-2);cursor:pointer;font-family:inherit;display:flex;align-items:center;justify-content:center;transition:background .15s var(--ease-out),color .15s var(--ease-out)}.tts-player button:hover{background:var(--vp-c-bg-soft);color:var(--vp-c-text-1)}.tts-player .tp-rate{width:auto;padding:0 10px;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:11.5px;font-weight:700;color:var(--vp-c-brand-1)}.tts-player .tp-stop{color:var(--vp-c-text-3);font-size:16px}.tts-player .tp-stop:hover{color:#ef4444;background:#ef444414}.tts-player .tp-idx{font-size:11.5px;font-weight:600;color:var(--vp-c-text-3);padding:0 6px;font-variant-numeric:tabular-nums;min-width:54px;text-align:center}.tts-player button[data-act=pause] .tp-pause,.tts-player button[data-act=pause] .tp-play{display:none}.tts-player:not(.is-paused) button[data-act=pause] .tp-pause{display:block}.tts-player.is-paused button[data-act=pause] .tp-play{display:block}.tts-player button[data-act=pause]{background:linear-gradient(135deg,var(--vp-c-brand-1),var(--vp-c-brand-2));color:#fff}.tts-player button[data-act=pause]:hover{background:linear-gradient(135deg,#4f46e5,#2563eb);color:#fff}@media(max-width:640px){.tts-player{bottom:14px;padding:4px 6px}.tts-player .tp-idx{display:none}}.back-to-top-fab{position:fixed;right:22px;bottom:22px;z-index:24;width:40px;height:40px;border-radius:50%;border:1px solid var(--vp-c-divider);background:var(--vp-c-bg);color:var(--vp-c-text-2);cursor:pointer;padding:0;display:flex;align-items:center;justify-content:center;box-shadow:var(--shadow-4);opacity:0;transform:translateY(8px);pointer-events:none;transition:opacity .2s var(--ease-out),transform .2s var(--ease-out),color .2s var(--ease-out),border-color .2s var(--ease-out)}.back-to-top-fab.is-visible{opacity:1;transform:translateY(0);pointer-events:auto}.back-to-top-fab:hover{color:var(--vp-c-brand-1);border-color:color-mix(in oklab,var(--vp-c-brand-1) 45%,transparent)}.back-to-top-fab .btt-ring{position:absolute;inset:2px}.back-to-top-fab .btt-track{stroke:var(--vp-c-divider)}.back-to-top-fab .btt-fill{stroke:var(--vp-c-brand-1);transition:stroke-dashoffset .15s var(--ease-out)}.back-to-top-fab:hover .btt-fill{stroke:var(--vp-c-brand-2)}.back-to-top-fab .btt-arrow{position:relative;z-index:1}@media(max-width:768px){.back-to-top-fab{right:20px;bottom:78px}}@media(max-width:640px){.back-to-top-fab{display:none}}html.reading-focus .VPNav,html.reading-focus .VPLocalNav,html.reading-focus .VPSidebar,html.reading-focus .VPDocAside,html.reading-focus .VPDocFooter,html.reading-focus .article-header,html.reading-focus .article-footer,html.reading-focus .sticky-section,html.reading-focus .mobile-toc-fab,html.reading-focus .VPFooter{display:none!important}html.reading-focus .VPContent,html.reading-focus .VPDoc,html.reading-focus .VPDoc .container,html.reading-focus .VPDoc .content,html.reading-focus .VPDoc .content-container{padding-top:0!important;padding-left:0!important;padding-right:0!important;max-width:880px!important;margin:0 auto!important}html.reading-focus body{padding-top:24px}.mobile-toc-fab{position:fixed;right:20px;bottom:20px;z-index:25;width:48px;height:48px;border-radius:50%;border:none;background:linear-gradient(135deg,var(--vp-c-brand-1),var(--vp-c-brand-2));color:#fff;cursor:pointer;display:none;align-items:center;justify-content:center;box-shadow:0 8px 24px color-mix(in oklab,var(--vp-c-brand-1) 40%,transparent);transition:transform .18s var(--ease-out)}.mobile-toc-fab:hover,.mobile-toc-fab:focus-visible{transform:translateY(-2px)}@media(max-width:768px){.mobile-toc-fab{display:flex}}.mobile-toc-sheet{position:fixed;inset:0;z-index:60;display:flex;align-items:flex-end;pointer-events:none}.mobile-toc-sheet .mts-backdrop{position:absolute;inset:0;background:#0f172a80;opacity:0;transition:opacity .24s var(--ease-out);pointer-events:auto}.mobile-toc-sheet.is-open .mts-backdrop{opacity:1}.mobile-toc-sheet .mts-card{position:relative;width:100%;max-height:70vh;background:var(--vp-c-bg);border-radius:14px 14px 0 0;box-shadow:0 -16px 40px #0f172a33;transform:translateY(100%);transition:transform .28s cubic-bezier(.4,0,.2,1);pointer-events:auto;display:flex;flex-direction:column}.mobile-toc-sheet.is-open .mts-card{transform:translateY(0)}.mobile-toc-sheet .mts-header{display:flex;align-items:center;justify-content:space-between;padding:14px 18px;border-bottom:1px solid var(--vp-c-divider);font-size:14px;font-weight:700;color:var(--vp-c-text-1);letter-spacing:-.01em}.mobile-toc-sheet .mts-close{width:30px;height:30px;border-radius:8px;border:none;background:transparent;color:var(--vp-c-text-3);font-size:22px;line-height:1;cursor:pointer;font-family:inherit}.mobile-toc-sheet .mts-close:hover{background:var(--vp-c-bg-soft);color:var(--vp-c-text-1)}.mobile-toc-sheet .mts-list{overflow-y:auto;-webkit-overflow-scrolling:touch;padding:6px 4px 14px}.mobile-toc-sheet .mts-item{display:block;padding:10px 18px;border-radius:8px;margin:1px 8px;font-size:14px;line-height:1.5;color:var(--vp-c-text-1);text-decoration:none;border-left:2px solid transparent;transition:background .15s var(--ease-out),border-color .15s var(--ease-out);cursor:pointer}.mobile-toc-sheet .mts-item:hover,.mobile-toc-sheet .mts-item:active{background:var(--vp-c-bg-soft);border-left-color:var(--vp-c-brand-1)}.mobile-toc-sheet .mts-h3{font-size:13px;color:var(--vp-c-text-2);padding-left:32px}.book-page .vp-doc .katex{font-size:1.02em;line-height:1.4}.book-page .vp-doc .katex-display{margin:20px 0;padding:10px 14px;overflow-x:auto;overflow-y:hidden;background:var(--vp-c-bg-soft);border-radius:8px;border-left:3px solid color-mix(in oklab,var(--vp-c-brand-1) 38%,transparent)}.book-page .vp-doc .katex-display>.katex{font-size:1.1em}.dark .book-page .vp-doc .katex-display{background:#ffffff08;border-left-color:#818cf873}.book-page .vp-doc .katex-error{background:#ef44441a;padding:2px 6px;border-radius:4px;font-size:.9em}@media(max-width:640px){.book-page .vp-doc .chapter-cover-label{font-size:11px;letter-spacing:.14em;gap:8px;margin-bottom:6px}.book-page .vp-doc .chapter-cover-label .ccl-zh{font-size:10.5px}.book-page .vp-doc h2{margin-top:44px}.book-page .vp-doc h3{margin-top:32px}.kbd-help-card{padding:16px 18px 18px}.kbd-help-grid .kbd-row{font-size:12.5px}.book-page .vp-doc .code-expand-toggle .cet-label{font-size:11px;padding:5px 12px}.book-page .vp-doc .code-file-label{padding:7px 12px;font-size:11.5px}}@media print{:root,.dark{--vp-c-bg: #fff !important;--vp-c-bg-soft: #fafafa !important;--vp-c-bg-alt: #fff !important;--vp-c-text-1: #000 !important;--vp-c-text-2: #333 !important;--vp-c-text-3: #555 !important}body{background:#fff!important;color:#000!important}.VPNav,.VPLocalNav,.VPSidebar,.VPDocAside,.VPDocFooter,.VPFooter,.VPNavBar,.reading-progress,.kbd-help-overlay,.img-lightbox-overlay,.selection-toolbar,.article-header .ah-stats>*:not(:first-child),.article-footer,.ctn-wrap,.vp-doc .header-anchor,.vp-doc .para-anchor,.vp-doc .code-expand-toggle,.vp-doc div[class*=language-] button.copy{display:none!important}.VPContent,.VPDoc,.VPDoc .container,.VPDoc .content,.VPDoc .content-container{margin:0!important;padding:0!important;max-width:100%!important}.vp-doc{max-width:100%!important}.book-page .vp-doc div[class*=language-].code-collapsible.is-collapsed pre{max-height:none!important}.book-page .vp-doc div[class*=language-]{box-shadow:none!important;border:1px solid #ddd!important;background:#fafafa!important;page-break-inside:avoid}.book-page .vp-doc div[class*=language-] pre,.book-page .vp-doc div[class*=language-] code{color:#111!important;background:#fafafa!important}.book-page .vp-doc .line-numbers-wrapper{background:#f0f0f0!important;color:#888!important;border-right:1px solid #ddd!important}.book-page .vp-doc a[href^=http]:not([href*="yangyitao.com"]):after{content:" (" attr(href) ")"!important;font-size:.85em;color:#666!important;opacity:1!important}.book-page .vp-doc h1,.book-page .vp-doc h2,.book-page .vp-doc h3,.book-page .vp-doc h4{page-break-after:avoid}.book-page .vp-doc figure,.book-page .vp-doc .mermaid,.book-page .vp-doc table{page-break-inside:avoid}.book-page .vp-doc .img-caption,.book-page .vp-doc .mermaid-caption{color:#555!important}.book-page .vp-doc h1:before{content:"杨艺韬讲堂";display:block;font-size:11px;font-weight:600;letter-spacing:.1em;color:#888;text-transform:uppercase;margin-bottom:8px}}.book-page .vp-doc h2{position:relative;font-size:24px;font-weight:700;letter-spacing:-.015em;margin-top:56px;padding-bottom:12px;border-bottom:none;line-height:1.35}.book-page .vp-doc h2:after{content:"";position:absolute;left:0;right:25%;bottom:0;height:2px;border-radius:1px;background:linear-gradient(to right,var(--vp-c-brand-1),color-mix(in oklab,var(--vp-c-brand-1) 50%,transparent) 35%,var(--vp-c-divider) 75%,transparent)}.book-page .vp-doc h3{position:relative;font-size:19px;font-weight:600;margin-top:40px;padding-left:16px;line-height:1.4;letter-spacing:-.01em}.book-page .vp-doc h3:before{content:"";position:absolute;left:0;top:.18em;width:4px;height:.95em;border-radius:2px;background:linear-gradient(180deg,var(--vp-c-brand-1),var(--vp-c-brand-2))}.book-page .vp-doc h4{font-size:16px;font-weight:600;margin-top:32px;color:var(--vp-c-text-2);line-height:1.45}.book-page .vp-doc p{line-height:1.88;margin:20px 0}.book-page .vp-doc ul,.book-page .vp-doc ol{padding-left:1.5em}.book-page .vp-doc li{line-height:1.85}.book-page .vp-doc li+li{margin-top:8px}.book-page .vp-doc li::marker{color:var(--vp-c-brand-1)}.book-page .vp-doc ol>li::marker{font-weight:700;color:var(--vp-c-brand-1);font-size:15px}.book-page .vp-doc li>ul,.book-page .vp-doc li>ol{margin-top:6px}.book-page .vp-doc blockquote{position:relative;background:var(--vp-c-bg-soft);border-left:3px solid var(--vp-c-divider);border-radius:0 8px 8px 0;padding:14px 20px;margin:24px 0;color:var(--vp-c-text-1);font-size:15.5px}.book-page .vp-doc blockquote p{margin:6px 0;line-height:1.8}.book-page .vp-doc blockquote p:first-child{margin-top:0}.book-page .vp-doc blockquote p:last-child{margin-bottom:0}.vp-doc div[class*=language-]{border-radius:10px;margin:24px 0;background-color:#1e1e2e!important;border:1px solid rgba(255,255,255,.06)}.vp-doc div[class*=language-] span.lang{color:#ffffff4d;font-size:12px;font-weight:500;text-transform:uppercase;letter-spacing:.05em}.dark .vp-doc div[class*=language-]{border-color:#ffffff0a}.vp-doc div[class*=language-] pre{padding:20px 24px}.vp-doc div[class*=language-] code{font-size:13.5px;line-height:1.7;font-family:JetBrains Mono,Fira Code,SF Mono,Menlo,Monaco,Consolas,monospace;font-feature-settings:"liga" 1,"calt" 1}.book-page .vp-doc :not(pre)>code{padding:2px 7px;border-radius:5px;font-size:.88em;font-weight:500;background:var(--vp-c-brand-soft);color:var(--vp-c-brand-1);font-family:JetBrains Mono,Fira Code,SF Mono,Menlo,monospace;transition:background .18s var(--ease-out),box-shadow .18s var(--ease-out)}.book-page .vp-doc :not(pre)>code.token-similar{background:#f59e0b2e;color:#b45309;box-shadow:0 0 0 1px #f59e0b4d}.dark .book-page .vp-doc :not(pre)>code.token-similar{background:#f59e0b40;color:#fbbf24}.book-page .vp-doc .chapter-ref-auto{color:inherit;text-decoration:underline;text-decoration-color:color-mix(in oklab,var(--vp-c-brand-1) 42%,transparent);text-decoration-thickness:1px;text-underline-offset:3px;text-decoration-style:dotted;cursor:pointer;transition:color .15s var(--ease-out),text-decoration-color .15s var(--ease-out)}.book-page .vp-doc .chapter-ref-auto:hover{color:#d97706;text-decoration-color:#f59e0b;text-decoration-style:solid}.book-page .vp-doc :not(pre)>code.code-dblclick-copied{background:#10b98140!important;color:#059669!important;box-shadow:0 0 0 1px #10b98166;animation:code-dblclick-flash .7s cubic-bezier(.2,0,0,1) forwards}@keyframes code-dblclick-flash{0%{background:#10b98159;color:#059669}to{background:#10b98140}}.dark .book-page .vp-doc :not(pre)>code.code-dblclick-copied{background:#10b9814d!important;color:#34d399!important}.book-page .vp-doc table{border-collapse:separate;border-spacing:0;border-radius:10px;border:1px solid var(--vp-c-divider);margin:0;width:max-content;min-width:100%;font-size:14px}.book-page .vp-doc .table-scroll-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch;margin:24px 0;border-radius:10px}.book-page .vp-doc .table-scroll-wrap::-webkit-scrollbar{height:4px}.book-page .vp-doc .table-scroll-wrap::-webkit-scrollbar-thumb{background:var(--vp-c-divider);border-radius:4px}.book-page .vp-doc th{background:var(--vp-c-brand-soft);font-weight:600;font-size:13px;padding:12px 18px;text-align:left;letter-spacing:.02em}.book-page .vp-doc td{padding:11px 18px;font-size:14px;border-top:1px solid var(--vp-c-divider);line-height:1.6}.book-page .vp-doc tbody tr:nth-child(2n) td{background:color-mix(in oklab,var(--vp-c-brand-1) 3%,transparent)}.dark .book-page .vp-doc tbody tr:nth-child(2n) td{background:#ffffff06}.book-page .vp-doc td:first-child{font-weight:600;color:var(--vp-c-text-1)}.book-page .vp-doc tr:hover td{background:color-mix(in oklab,var(--vp-c-brand-1) 6%,transparent);transition:background .18s var(--ease-out)}.book-page .vp-doc img{border-radius:10px;box-shadow:var(--shadow-2);margin:24px 0;transition:box-shadow .28s cubic-bezier(.2,0,0,1)}.book-page .vp-doc img:hover{box-shadow:var(--shadow-3)}.book-page .vp-doc hr{margin:48px 0;border:none;height:1px;background:linear-gradient(90deg,transparent 0%,var(--vp-c-divider) 20%,var(--vp-c-divider) 80%,transparent 100%)}.book-page .vp-doc a{color:var(--vp-c-brand-1);font-weight:500;text-decoration:underline;text-decoration-color:color-mix(in oklab,var(--vp-c-brand-1) 35%,transparent);text-decoration-thickness:1.5px;text-underline-offset:3px;text-decoration-skip-ink:auto;transition:text-decoration-color .18s var(--ease-out),color .18s var(--ease-out);border-bottom:none}.book-page .vp-doc a:hover{text-decoration-color:color-mix(in oklab,var(--vp-c-brand-1) 80%,transparent)}.book-page .vp-doc em{font-style:italic;color:var(--vp-c-text-2)}.Layout.is-home .VPContent{padding:0!important}.Layout.is-home .VPContent .VPHome{max-width:100%!important;padding:0!important}.Layout.is-home .VPNav,.Layout.is-home .VPLocalNav{display:none!important}body{margin:0}html,body{overflow-x:clip;max-width:100vw}.book-page .vp-doc .mermaid{display:flex;flex-direction:column;align-items:center;padding:20px 16px 16px;margin:28px 0;background:var(--vp-c-bg-soft);border:1px solid var(--vp-c-divider);border-radius:10px}.dark.book-page .vp-doc .mermaid{background:#1e233259;border-color:#94a3b81a}.dark.book-page .vp-doc .mermaid svg .node rect,.dark.book-page .vp-doc .mermaid svg .node circle,.dark.book-page .vp-doc .mermaid svg .node ellipse,.dark.book-page .vp-doc .mermaid svg .node polygon,.dark.book-page .vp-doc .mermaid svg .node path{fill:#1e2332b3!important;stroke:#6b9e2c!important}.dark.book-page .vp-doc .mermaid svg .cluster rect{fill:#14182380!important;stroke:#94a3b840!important}.dark.book-page .vp-doc .mermaid svg .label,.dark.book-page .vp-doc .mermaid svg .nodeLabel,.dark.book-page .vp-doc .mermaid svg .nodeLabel *,.dark.book-page .vp-doc .mermaid svg text{color:#e2e8f0!important;fill:#e2e8f0!important}.dark.book-page .vp-doc .mermaid svg .edgeLabel{background:#1e2332d9!important}.dark.book-page .vp-doc .mermaid svg .edgeLabel .labelBkg,.dark.book-page .vp-doc .mermaid svg .edgeLabel rect{fill:#1e2332d9!important}.dark.book-page .vp-doc .mermaid svg .flowchart-link,.dark.book-page .vp-doc .mermaid svg .messageLine0,.dark.book-page .vp-doc .mermaid svg .messageLine1,.dark.book-page .vp-doc .mermaid svg path.transition,.dark.book-page .vp-doc .mermaid svg path.relation{stroke:#94a3b8!important}.dark.book-page .vp-doc .mermaid svg .arrowheadPath,.dark.book-page .vp-doc .mermaid svg .marker{fill:#94a3b8!important;stroke:#94a3b8!important}.dark.book-page .vp-doc .mermaid svg .actor,.dark.book-page .vp-doc .mermaid svg .activation0,.dark.book-page .vp-doc .mermaid svg .activation1,.dark.book-page .vp-doc .mermaid svg .activation2{fill:#1e2332b3!important;stroke:#6b9e2c!important}.dark.book-page .vp-doc .mermaid svg .note{fill:#f4845f1f!important;stroke:#f4845f!important}.dark.book-page .vp-doc .mermaid svg .statediagram-state rect,.dark.book-page .vp-doc .mermaid svg .statediagram-cluster rect{fill:#1e2332b3!important;stroke:#6b9e2c!important}.dark.book-page .vp-doc .mermaid svg .statediagram-cluster .inner,.dark.book-page .vp-doc .mermaid svg .statediagram-cluster .background{fill:#14182366!important}.mermaid,[id^=mermaid]{cursor:zoom-in;transition:opacity .2s}.mermaid:hover{opacity:.92}.mermaid svg,.mermaid svg *{pointer-events:auto!important}.mermaid-zoom-overlay{position:fixed;inset:0;z-index:9999;background:#000000d9;backdrop-filter:blur(12px);display:flex;align-items:center;justify-content:center;cursor:pointer;animation:mermaid-fade-in .22s cubic-bezier(.2,0,0,1)}.mermaid-zoom-container{overflow:visible;background:#fff;border-radius:16px;padding:36px;box-shadow:0 24px 80px #00000080;cursor:grab;transform-origin:center center;transition:transform .15s var(--ease-out)}.mermaid-zoom-container:active{cursor:grabbing}.dark .mermaid-zoom-container{background:#1e1e2e}.mermaid-zoom-container svg{display:block;min-width:60vw;height:auto}.mermaid-zoom-container,.mermaid-zoom-container *{cursor:grab!important}.mermaid-zoom-container:active,.mermaid-zoom-container:active *{cursor:grabbing!important}.mermaid-zoom-controls{position:fixed;bottom:24px;left:50%;transform:translate(-50%);display:flex;gap:6px;z-index:10000;background:#1e1e2eeb;padding:6px 10px;border-radius:12px;box-shadow:0 4px 20px #0006;border:1px solid rgba(255,255,255,.1)}.mz-btn{width:36px;height:36px;border:none;border-radius:8px;background:#ffffff1f;color:#e2e8f0;font-size:16px;font-weight:600;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:background .15s cubic-bezier(.2,0,0,1),color .15s cubic-bezier(.2,0,0,1)}.mz-btn:hover{background:#ffffff40;color:#fff}.mz-close{background:#ef44444d}.mz-close:hover{background:#ef444499}@keyframes mermaid-fade-in{0%{opacity:0}to{opacity:1}}.book-page .vp-doc{font-family:Newsreader,"Noto Serif SC","Source Han Serif SC",STSong,Georgia,serif;font-size:17.5px;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}.book-page .vp-doc h1{font-family:Newsreader,"Noto Serif SC",Georgia,serif;position:relative}.book-page .vp-doc h1:after{display:none}.book-page .vp-doc h2{font-family:Newsreader,"Noto Serif SC",Georgia,serif;position:relative;padding-left:14px;border-bottom:none;border-left:2px solid var(--vp-c-brand-1)}.book-page .vp-doc h3{font-family:Newsreader,"Noto Serif SC",Georgia,serif;color:var(--vp-c-text-1)}.book-page .vp-doc h1:target,.book-page .vp-doc h2:target,.book-page .vp-doc h3:target,.book-page .vp-doc h4:target{animation:anchor-highlight 2s cubic-bezier(.2,0,0,1)}@keyframes anchor-highlight{0%{background:var(--vp-c-brand-soft);border-radius:4px}to{background:transparent}}@media(min-width:960px){.book-page .VPDoc .content-container{padding-left:16px}}.book-page .vp-doc img{cursor:zoom-in;transition:transform .3s cubic-bezier(.4,0,.2,1),box-shadow .3s ease}.book-page .vp-doc img:hover{transform:scale(1.01)}.book-page .vp-doc div[class*=language-]:before{content:"";position:absolute;inset:0;border-radius:12px;padding:1px;background:linear-gradient(135deg,#ffffff14,#ffffff05);-webkit-mask:linear-gradient(#fff 0 0) content-box,linear-gradient(#fff 0 0);-webkit-mask-composite:xor;mask-composite:exclude;pointer-events:none}.vp-doc div[class*=language-] pre::-webkit-scrollbar{height:4px}.vp-doc div[class*=language-] pre::-webkit-scrollbar-thumb{background:#ffffff1f;border-radius:4px}.vp-doc div[class*=language-] pre::-webkit-scrollbar-thumb:hover{background:#ffffff40}.vp-doc div[class*=language-] pre::-webkit-scrollbar-track{background:transparent}.vp-doc div[class*=language-] button.copy{width:28px!important;height:28px!important;border-radius:6px!important;background:transparent!important;border:none!important;transition:opacity .18s cubic-bezier(.2,0,0,1),background .18s cubic-bezier(.2,0,0,1)!important;opacity:0!important;top:10px!important;right:10px!important}.vp-doc div[class*=language-]:hover button.copy{opacity:.55!important}.vp-doc div[class*=language-] button.copy:hover{opacity:1!important;background:#0f172a14!important}.dark .vp-doc div[class*=language-] button.copy:hover{background:#ffffff1a!important}.vp-doc div[class*=language-] button.copy.copied{opacity:1!important;background:color-mix(in oklab,var(--vp-c-brand-1) 18%,transparent)!important}.vp-doc div[class*=language-] button.copy.copied:after{content:"已复制";position:absolute;right:0;top:-28px;padding:3px 10px;border-radius:999px;background:var(--vp-c-brand-1);color:#fff;font-size:11px;font-weight:600;letter-spacing:.05em;box-shadow:0 4px 14px color-mix(in oklab,var(--vp-c-brand-1) 36%,transparent);pointer-events:none;animation:copy-pill-pop 1.6s cubic-bezier(.2,0,0,1) forwards}.dark .vp-doc div[class*=language-] button.copy.copied:after{background:#c4f857;color:#0a0b0f;box-shadow:0 4px 14px #c4f85747}@keyframes copy-pill-pop{0%{opacity:0;transform:translateY(4px)}15%{opacity:1;transform:translateY(0)}80%{opacity:1;transform:translateY(0)}to{opacity:0;transform:translateY(-4px)}}.book-page .pager-link{border-radius:12px!important;border:1px solid var(--vp-c-divider)!important;padding:16px 20px!important;transition:border-color .22s cubic-bezier(.2,0,0,1),transform .22s cubic-bezier(.2,0,0,1),box-shadow .22s cubic-bezier(.2,0,0,1)!important}.book-page .pager-link:hover{border-color:var(--vp-c-brand-1)!important;box-shadow:0 4px 16px color-mix(in oklab,var(--vp-c-brand-1) 12%,transparent)!important;transform:translateY(-2px)}.book-page .pager-link .title{font-family:Newsreader,"Noto Serif SC",serif!important;font-weight:600!important}.book-page .vp-doc p+p{margin-top:22px}.book-page .vp-doc hr{position:relative;margin:56px 0;background:none;height:auto}.book-page .vp-doc hr:before{content:"• • •";display:block;text-align:center;font-size:14px;color:var(--vp-c-text-3);letter-spacing:.5em}.book-page .vp-doc strong{font-weight:700;color:var(--vp-c-text-1)}.book-page .vp-doc ul>li{position:relative}.book-page .vp-doc ol>li::marker{font-family:Newsreader,Georgia,serif;font-weight:600;color:var(--vp-c-brand-1)}.book-page .VPDocAsideOutline{padding:4px 0!important;background:transparent!important;border:none!important;border-radius:0!important;margin-top:16px}.book-page .VPDocAsideOutline .content{position:relative}.book-page .VPDocAsideOutline .outline-title{font-size:0!important;font-weight:700!important;letter-spacing:0!important;text-transform:none!important;color:transparent!important;position:relative;margin:0 0 10px!important;padding:0 0 10px!important;border-bottom:1px solid var(--vp-c-divider)}.book-page .VPDocAsideOutline .outline-title:before{content:"在本章";display:block;font-size:13px;font-weight:700;letter-spacing:.01em;color:var(--vp-c-text-1);line-height:1}.book-page .VPDocAsideOutline .outline-link{transition:color .18s cubic-bezier(.2,0,0,1),border-color .18s cubic-bezier(.2,0,0,1),font-weight .18s cubic-bezier(.2,0,0,1)!important;font-size:13px!important;line-height:1.5!important;color:var(--vp-c-text-2)!important;position:relative;padding:6px 0 6px 12px!important;border-left:2px solid transparent!important;border-radius:0!important;margin:0!important;background:transparent!important;display:block}.book-page .VPDocAsideOutline .outline-link:hover{color:var(--vp-c-text-1)!important;background:transparent!important;border-left-color:var(--vp-c-divider)!important}.book-page .VPDocAsideOutline .outline-link.active{color:var(--vp-c-text-1)!important;font-weight:700!important;background:transparent!important;border-left:2px solid var(--vp-c-text-1)!important}html.dark.book-page .VPDocAsideOutline .outline-link.active{color:#ecedf0!important;border-left-color:var(--jt-accent)!important}.book-page .VPDocAsideOutline .outline-link.nested{padding-left:28px!important;font-size:12px!important;color:var(--vp-c-text-3)!important;padding-top:5px!important;padding-bottom:5px!important}.book-page .VPDocAsideOutline .outline-link.nested:hover{color:var(--vp-c-text-2)!important}.book-page .VPDocAsideOutline .outline-link.nested.active{font-weight:600!important;color:var(--vp-c-text-1)!important}.book-page .vp-doc tr:hover td{background:linear-gradient(90deg,var(--vp-c-brand-soft),transparent)!important}@media(min-width:960px){.book-page .VPDoc:not(.has-aside) .content-container{max-width:760px!important}}.book-page .vp-doc :not(pre)>code{font-family:JetBrains Mono,Fira Code,monospace;font-size:.85em;padding:2px 6px;border-radius:4px;font-weight:400;background:var(--vp-c-brand-soft);color:var(--vp-c-brand-2)}.dark .book-page .vp-doc :not(pre)>code{color:var(--vp-c-brand-1)}.book-page .vp-doc ::selection{background:color-mix(in oklab,var(--vp-c-brand-1) 22%,transparent);color:inherit}.dark .book-page .vp-doc ::selection{background:#c4f85747}.book-page .vp-doc small{font-size:13px;color:var(--vp-c-text-3);font-style:italic}.book-page .vp-doc .header-anchor{opacity:0;transition:opacity .2s,color .2s!important}.book-page .vp-doc h1:hover .header-anchor,.book-page .vp-doc h2:hover .header-anchor,.book-page .vp-doc h3:hover .header-anchor,.book-page .vp-doc h4:hover .header-anchor{opacity:1}.reading-progress{background:linear-gradient(90deg,var(--vp-c-brand-1),var(--vp-c-brand-2),var(--vp-c-brand-1))!important;background-size:200% 100%!important;animation:progress-shimmer 3s linear infinite!important;height:2px!important;box-shadow:0 0 12px color-mix(in oklab,var(--vp-c-brand-1) 32%,transparent)!important}@keyframes progress-shimmer{0%{background-position:0% 0%}50%{background-position:100% 0%}to{background-position:0% 0%}}.book-page .vp-doc div[class*=language-]{position:relative}.book-page .vp-doc .code-lang-badge{position:absolute;top:8px;right:50px;font-size:11px;font-family:JetBrains Mono,Fira Code,monospace;font-weight:500;color:#94a3b899;text-transform:lowercase;letter-spacing:.04em;pointer-events:none;user-select:none;z-index:1;opacity:0;transition:opacity .2s var(--ease-out)}.book-page .vp-doc div[class*=language-]:hover .code-lang-badge{opacity:1}.book-page .vp-doc .zoomable-img{cursor:zoom-in;border-radius:6px;transition:opacity .2s var(--ease-out)}.book-page .vp-doc .zoomable-img:hover{opacity:.92}.img-lightbox-overlay{position:fixed;inset:0;background:#000000d9;display:flex;align-items:center;justify-content:center;z-index:9999;animation:img-lightbox-in .2s cubic-bezier(.2,0,0,1);cursor:zoom-out}@keyframes img-lightbox-in{0%{opacity:0}to{opacity:1}}.img-lightbox-stage{display:flex;flex-direction:column;align-items:center;gap:14px;max-width:92vw;max-height:92vh}.img-lightbox-img{max-width:92vw;max-height:78vh;border-radius:4px;box-shadow:0 24px 80px #0006;cursor:default}.img-lightbox-caption{max-width:80ch;font-size:14px;line-height:1.6;color:#ffffffd1;text-align:center;font-style:italic;letter-spacing:.01em;padding:0 16px}.img-lightbox-close{position:fixed;top:20px;right:24px;width:44px;height:44px;border-radius:50%;border:none;background:#ffffff1f;color:#fff;font-size:24px;cursor:pointer;display:flex;align-items:center;justify-content:center;line-height:1;transition:background .18s var(--ease-out)}.img-lightbox-close:hover{background:#ffffff38}.img-lightbox-nav{position:fixed;top:50%;transform:translateY(-50%);width:48px;height:48px;border-radius:50%;border:none;background:#ffffff1a;color:#fff;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:background .18s var(--ease-out),transform .18s var(--ease-out);z-index:10}.img-lightbox-nav[hidden]{display:none}.img-lightbox-nav.prev{left:24px}.img-lightbox-nav.next{right:24px}.img-lightbox-nav:hover{background:#ffffff38;transform:translateY(-50%) scale(1.06)}.img-lightbox-counter{position:fixed;top:24px;left:28px;padding:6px 12px;border-radius:999px;background:#ffffff1f;color:#fff;font-size:12px;font-weight:600;letter-spacing:.04em;font-family:JetBrains Mono,ui-monospace,monospace;z-index:10}@media(max-width:640px){.img-lightbox-nav{width:40px;height:40px}.img-lightbox-nav.prev{left:10px}.img-lightbox-nav.next{right:10px}.img-lightbox-counter{top:18px;left:16px;font-size:11px;padding:5px 10px}}.selection-toolbar{display:flex;gap:2px;padding:4px;background:#0f172af2;backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-radius:8px;box-shadow:0 8px 32px #0000002e,0 2px 8px #0000001f,0 0 0 1px #ffffff0f inset;z-index:9000;animation:selection-toolbar-in .15s var(--ease-out)}@keyframes selection-toolbar-in{0%{opacity:0;transform:translate(-50%) translateY(4px)}to{opacity:1;transform:translate(-50%) translateY(0)}}.selection-toolbar button{background:transparent;border:none;color:#fff;font-size:12px;padding:6px 12px;border-radius:5px;cursor:pointer;font-family:inherit;transition:background .15s var(--ease-out)}.selection-toolbar button:hover{background:#ffffff1f}.selection-toolbar button:active{background:#ffffff38;transition-duration:.06s}.selection-toolbar:after{content:"";position:absolute;bottom:-5px;left:50%;transform:translate(-50%);width:0;height:0;border-left:5px solid transparent;border-right:5px solid transparent;border-top:5px solid rgba(15,23,42,.95)}@media(max-width:768px){.selection-toolbar{display:none}.img-lightbox-close{top:12px;right:12px;width:38px;height:38px}}:root{--reading-font-size: 16px;--reading-line-height: 1.85}.book-page .vp-doc,.book-page .vp-doc p,.book-page .vp-doc li{font-size:var(--reading-font-size);line-height:var(--reading-line-height)}html[data-reading-font=sans].book-page .vp-doc,html[data-reading-font=sans].book-page .vp-doc p,html[data-reading-font=sans].book-page .vp-doc li,html[data-reading-font=sans].book-page .vp-doc h1,html[data-reading-font=sans].book-page .vp-doc h2,html[data-reading-font=sans].book-page .vp-doc h3,html[data-reading-font=sans].book-page .vp-doc h4{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Hiragino Sans GB,Microsoft YaHei,Helvetica Neue,sans-serif!important}@media(min-width:1280px){html[data-reading-width=narrow].book-page .VPDoc .container{max-width:920px!important}html[data-reading-width=narrow].book-page .vp-doc .content-container{max-width:680px!important}html[data-reading-width=wide].book-page .VPDoc .container{max-width:1320px!important}html[data-reading-width=wide].book-page .vp-doc .content-container{max-width:880px!important}}.book-page .vp-doc .broken-img-placeholder{display:flex;align-items:center;gap:14px;padding:18px 20px;margin:24px 0;border:1px dashed rgba(15,23,42,.15);border-radius:12px;background:#0f172a05;color:var(--vp-c-text-3);font-family:var(--vp-font-family-base);font-size:14px}.book-page .vp-doc .broken-img-placeholder svg{flex-shrink:0;opacity:.5}.book-page .vp-doc .broken-img-info{flex:1;min-width:0}.book-page .vp-doc .broken-img-alt{font-weight:600;color:var(--vp-c-text-2);margin-bottom:2px}.book-page .vp-doc .broken-img-src{font-size:12px;color:var(--vp-c-brand-1);text-decoration:none}.book-page .vp-doc .broken-img-src:hover{text-decoration:underline}.dark .book-page .vp-doc .broken-img-placeholder{border-color:#94a3b82e;background:#94a3b80a}.book-page .vp-doc .mermaid-fallback{margin:24px 0;border:1px solid rgba(245,158,11,.25);background:#fefce899;border-radius:12px;overflow:hidden;font-family:var(--vp-font-family-base);font-size:14px}.dark .book-page .vp-doc .mermaid-fallback{border-color:#f59e0b4d;background:#78350f2e}.book-page .vp-doc .mermaid-fallback-header{display:flex;align-items:center;gap:10px;padding:14px 18px;color:#b45309;font-weight:500}.dark .book-page .vp-doc .mermaid-fallback-header{color:#fbbf24}.book-page .vp-doc .mermaid-fallback-toggle{margin-left:auto;padding:4px 12px;border:1px solid rgba(245,158,11,.4);border-radius:6px;background:transparent;color:inherit;font-size:12px;cursor:pointer;font-family:inherit;transition:background .15s cubic-bezier(.2,0,0,1)}.book-page .vp-doc .mermaid-fallback-toggle:hover{background:#f59e0b1f}.book-page .vp-doc .mermaid-fallback-src{margin:0;padding:14px 18px;border-top:1px solid rgba(245,158,11,.2);background:#fff9;color:var(--vp-c-text-2);font-family:JetBrains Mono,Fira Code,monospace;font-size:12px;line-height:1.6;white-space:pre-wrap;word-break:break-word;max-height:320px;overflow:auto}.dark .book-page .vp-doc .mermaid-fallback-src{background:#00000040;border-top-color:#f59e0b2e}.nav-book-badge{font-size:10px;font-weight:500;margin-left:6px;opacity:.45;letter-spacing:.02em}.nav-book-badge-free{color:var(--vp-c-text-2)}.nav-book-badge-paid{color:var(--vp-c-text-3)}html.paywalled .vp-doc .content-container,html.paywalled .vp-doc>div[v-pre],html.paywalled .vp-doc>div:first-child{max-height:900px;overflow:hidden;position:relative;-webkit-mask-image:linear-gradient(to bottom,#000 0%,#000 calc(100% - 360px),rgba(0,0,0,.85) calc(100% - 280px),rgba(0,0,0,.55) calc(100% - 180px),rgba(0,0,0,.22) calc(100% - 80px),transparent 100%);mask-image:linear-gradient(to bottom,#000 0%,#000 calc(100% - 360px),rgba(0,0,0,.85) calc(100% - 280px),rgba(0,0,0,.55) calc(100% - 180px),rgba(0,0,0,.22) calc(100% - 80px),transparent 100%)}html.paywalled .article-footer .af-nav,html.paywalled .article-footer .af-related,html.paywalled .custom-comment{display:none}.book-page .vp-doc .chapter-full-content h1,.book-page .vp-doc .chapter-full-content h2,.book-page .vp-doc .chapter-full-content h3,.book-page .vp-doc .chapter-full-content h4{margin-top:32px}.book-page .vp-doc .chapter-full-content pre{padding:16px;border-radius:8px;overflow-x:auto;background:var(--vp-code-block-bg);font-size:14px;line-height:1.7}.book-page .vp-doc .chapter-full-content code{font-family:JetBrains Mono,Fira Code,monospace}.book-page .vp-doc .chapter-full-content table{border-collapse:collapse;width:100%;margin:16px 0}.book-page .vp-doc .chapter-full-content th,.book-page .vp-doc .chapter-full-content td{border:1px solid var(--vp-c-divider);padding:8px 12px;text-align:left}.book-page .vp-doc .chapter-full-content blockquote{border-left:4px solid var(--vp-c-brand-1);padding:8px 16px;margin:16px 0;color:var(--vp-c-text-2)}.book-page .vp-doc .header-anchor:before{content:"#";font-weight:600;color:var(--vp-c-brand-1)}.book-page .vp-doc h1,.book-page .vp-doc h2,.book-page .vp-doc h3,.book-page .vp-doc h4{scroll-margin-top:84px}html{scroll-padding-top:84px}a:focus-visible,button:focus-visible,[role=button]:focus-visible,[tabindex]:focus-visible{outline:2px solid var(--vp-c-brand-1);outline-offset:2px}a:focus:not(:focus-visible),button:focus:not(:focus-visible),[role=button]:focus:not(:focus-visible),[tabindex]:focus:not(:focus-visible){outline:none}input:focus-visible,textarea:focus-visible,select:focus-visible{outline:2px solid color-mix(in oklab,var(--vp-c-brand-1) 40%,transparent);outline-offset:1px}.book-page .vp-doc .header-anchor:focus-visible{opacity:1}.book-page .vp-doc .header-anchor{opacity:0;transition:opacity .18s var(--ease-out);margin-left:4px}.book-page .vp-doc h1:hover .header-anchor,.book-page .vp-doc h2:hover .header-anchor,.book-page .vp-doc h3:hover .header-anchor,.book-page .vp-doc h4:hover .header-anchor,.book-page .vp-doc .header-anchor:focus-visible{opacity:1}.book-page .vp-doc :not(pre)>code{background:color-mix(in oklab,var(--vp-c-brand-1) 10%,transparent);color:var(--vp-c-brand-2);padding:1.5px 6px;border-radius:5px;font-size:.88em;font-weight:500;font-family:JetBrains Mono,SF Mono,Menlo,Consolas,monospace;border:1px solid color-mix(in oklab,var(--vp-c-brand-1) 16%,transparent);vertical-align:.02em;transition:background .18s var(--ease-out),border-color .18s var(--ease-out)}@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important;scroll-behavior:auto!important}}.book-page ::selection{background:color-mix(in oklab,var(--vp-c-brand-1) 22%,transparent);color:var(--vp-c-text-1)}.dark.book-page ::selection,.dark .book-page ::selection{background:#c4f8574d}.book-page .vp-doc [class*=language-] pre code .line:hover{background:#ffffff0a}.book-page .vp-doc .custom-block{position:relative;margin:24px 0;padding:14px 18px 14px 22px;border-radius:10px;border:1px solid transparent;border-left-width:4px;font-size:14px;line-height:1.75}.book-page .vp-doc .custom-block .custom-block-title{display:flex;align-items:center;gap:10px;margin:0 0 8px;font-size:13.5px;font-weight:700;letter-spacing:0;text-transform:none}.book-page .vp-doc .custom-block .custom-block-title:before{content:"";width:20px;height:20px;border-radius:50%;background:currentColor;color:#fff;display:inline-flex;align-items:center;justify-content:center;font-family:Georgia,Times New Roman,serif;font-style:italic;font-weight:700;font-size:12.5px;line-height:1;flex-shrink:0}.book-page .vp-doc .custom-block.info .custom-block-title:before{content:"i";background:#3b82f6}.book-page .vp-doc .custom-block.tip .custom-block-title:before{content:"✓";background:#10b981;font-style:normal;font-family:var(--vp-font-family-base)}.book-page .vp-doc .custom-block.warning .custom-block-title:before{content:"!";background:#f59e0b;font-style:normal;font-family:var(--vp-font-family-base)}.book-page .vp-doc .custom-block.danger .custom-block-title:before,.book-page .vp-doc .custom-block.caution .custom-block-title:before{content:"!";background:#ef4444;font-style:normal;font-family:var(--vp-font-family-base)}.book-page .vp-doc .custom-block.details .custom-block-title:before{content:"+";background:#8b5cf6;font-style:normal;font-family:var(--vp-font-family-base);font-size:16px}.book-page .vp-doc .custom-block p{margin:0;line-height:1.75;font-size:14px}.book-page .vp-doc .custom-block p+p{margin-top:8px}.book-page .vp-doc .custom-block code{font-size:.86em;padding:1px 6px}.book-page .vp-doc .custom-block a{font-weight:600;text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:3px}.book-page .vp-doc .custom-block.info{background:#3b82f60f;border-color:#3b82f633;border-left-color:#3b82f6;color:var(--vp-c-text-1)}.book-page .vp-doc .custom-block.info .custom-block-title{color:#2563eb}.book-page .vp-doc .custom-block.tip{background:#10b9810f;border-color:#10b98138;border-left-color:#10b981;color:var(--vp-c-text-1)}.book-page .vp-doc .custom-block.tip .custom-block-title{color:#059669}.book-page .vp-doc .custom-block.warning{background:#f59e0b12;border-color:#f59e0b40;border-left-color:#f59e0b;color:var(--vp-c-text-1)}.book-page .vp-doc .custom-block.warning .custom-block-title{color:#b45309}.book-page .vp-doc .custom-block.danger,.book-page .vp-doc .custom-block.caution{background:#ef44440f;border-color:#ef444438;border-left-color:#ef4444;color:var(--vp-c-text-1)}.book-page .vp-doc .custom-block.danger .custom-block-title,.book-page .vp-doc .custom-block.caution .custom-block-title{color:#dc2626}.book-page .vp-doc .custom-block.details{background:#8b5cf60d;border-color:#8b5cf633;border-left-color:#8b5cf6;padding:0}.book-page .vp-doc .custom-block.details summary{display:flex;align-items:center;gap:8px;padding:12px 18px;cursor:pointer;font-size:13px;font-weight:600;color:#7c3aed;letter-spacing:.02em;list-style:none;user-select:none}.book-page .vp-doc .custom-block.details summary::-webkit-details-marker{display:none}.book-page .vp-doc .custom-block.details summary:before{content:"";width:0;height:0;border-left:5px solid currentColor;border-top:4px solid transparent;border-bottom:4px solid transparent;transition:transform .2s var(--ease-out);flex-shrink:0}.book-page .vp-doc .custom-block.details[open] summary:before{transform:rotate(90deg)}.book-page .vp-doc .custom-block.details>*:not(summary){padding:0 18px 14px}.dark .book-page .vp-doc .custom-block.info{background:#3b82f61a}.dark .book-page .vp-doc .custom-block.info .custom-block-title{color:#60a5fa}.dark .book-page .vp-doc .custom-block.tip{background:#10b9811a}.dark .book-page .vp-doc .custom-block.tip .custom-block-title{color:#34d399}.dark .book-page .vp-doc .custom-block.warning{background:#f59e0b1f}.dark .book-page .vp-doc .custom-block.warning .custom-block-title{color:#fbbf24}.dark .book-page .vp-doc .custom-block.danger,.dark .book-page .vp-doc .custom-block.caution{background:#ef44441a}.dark .book-page .vp-doc .custom-block.danger .custom-block-title,.dark .book-page .vp-doc .custom-block.caution .custom-block-title{color:#f87171}.dark .book-page .vp-doc .custom-block.details{background:#8b5cf61a}.dark .book-page .vp-doc .custom-block.details summary{color:#a78bfa}.VPSidebarItem .text .sb-read-mark{display:inline-flex;align-items:center;justify-content:center;width:14px;height:14px;border-radius:50%;background:#10b98124;color:#059669;margin-left:6px;vertical-align:middle}.dark .VPSidebarItem .text .sb-read-mark{background:#10b98133;color:#34d399}.VPSidebarItem .sb-progress{position:relative;height:2px;margin:2px 14px 4px;background:var(--vp-c-divider);border-radius:2px;overflow:hidden;cursor:help}.VPSidebarItem .sb-progress-fill{height:100%;background:linear-gradient(90deg,var(--vp-c-brand-1),var(--vp-c-brand-2));border-radius:2px;transition:width .3s cubic-bezier(.2,0,0,1)}.dark .VPSidebarItem .sb-progress{background:#94a3b82e}.dark .VPSidebarItem .sb-progress-fill{background:linear-gradient(90deg,#c4f857,#a5e043)}.VPSidebarItem.is-active .sb-progress-fill{background:linear-gradient(90deg,var(--vp-c-brand-1),#a5e043)}.book-page .vp-doc div[class*=language-].has-file-label{padding-top:0}.book-page .vp-doc .code-file-label{display:inline-flex;align-items:center;gap:6px;padding:8px 14px;margin:0;background:#ffffff0a;color:#ffffff9e;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:12px;font-weight:600;letter-spacing:.01em;border-bottom:1px solid rgba(255,255,255,.05);border-radius:12px 12px 0 0}.book-page .vp-doc .code-file-label svg{flex-shrink:0;opacity:.75}.book-page .vp-doc .has-file-label .cfl-path{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:100%}.book-page .vp-doc .has-file-label .code-lang-badge{top:38px}.book-page .vp-doc div[class*=language-] .code-meta{position:absolute;bottom:6px;right:12px;padding:1px 8px;border-radius:4px;background:#ffffff0d;color:#fff6;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:10.5px;font-weight:500;letter-spacing:.02em;pointer-events:none;opacity:0;transition:opacity .2s;z-index:1}.book-page .vp-doc div[class*=language-]:hover .code-meta{opacity:1}.book-page .vp-doc div[class*=language-].code-collapsible{position:relative}.book-page .vp-doc div[class*=language-].code-collapsible.is-collapsed pre{max-height:615px;overflow:hidden;overflow-y:hidden!important}.book-page .vp-doc div[class*=language-].code-collapsible.is-collapsed pre,.book-page .vp-doc div[class*=language-].code-collapsible.is-collapsed pre code{scrollbar-width:none}.book-page .vp-doc div[class*=language-].code-collapsible.is-collapsed pre::-webkit-scrollbar,.book-page .vp-doc div[class*=language-].code-collapsible.is-collapsed pre code::-webkit-scrollbar{display:none}.book-page .vp-doc .code-expand-toggle{position:absolute;left:0;right:0;bottom:0;display:flex;align-items:center;justify-content:center;height:56px;background:transparent;border:none;cursor:pointer;font:inherit;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;color:#ffffffd9;z-index:2;padding:0}.book-page .vp-doc .code-expand-toggle .cet-fade{position:absolute;inset:0;background:linear-gradient(to bottom,transparent,#1e1e2e 70%);pointer-events:none;transition:opacity .2s var(--ease-out)}.book-page .vp-doc div[class*=language-]:not(.is-collapsed) .code-expand-toggle{position:static;height:36px;margin-top:-8px;border-top:1px solid rgba(255,255,255,.08);background:#ffffff08}.book-page .vp-doc div[class*=language-]:not(.is-collapsed) .code-expand-toggle .cet-fade{display:none}.book-page .vp-doc .code-expand-toggle .cet-label{position:relative;z-index:1;display:inline-flex;align-items:center;gap:6px;padding:6px 14px;border-radius:999px;background:#ffffff14;font-size:12px;font-weight:600;letter-spacing:.02em;color:#ffffffeb;backdrop-filter:blur(4px);transition:background .2s var(--ease-out)}.book-page .vp-doc .code-expand-toggle:hover .cet-label{background:#ffffff24}.book-page .vp-doc div[class*=language-] .code-fullscreen-btn{position:absolute;top:10px;right:44px;width:28px;height:28px;border-radius:6px;background:transparent;border:none;color:#fff9;cursor:pointer;display:flex;align-items:center;justify-content:center;opacity:0;transition:opacity .15s,background .15s,color .15s;z-index:2}.book-page .vp-doc div[class*=language-]:hover .code-fullscreen-btn{opacity:.5}.book-page .vp-doc div[class*=language-] .code-fullscreen-btn:hover{opacity:1;background:#ffffff1a;color:#fff}.book-page .vp-doc div[class*=language-].has-file-label .code-fullscreen-btn{top:38px}.code-fullscreen-overlay{position:fixed;inset:0;z-index:100;background:#0f172ab3;backdrop-filter:blur(4px);display:flex;align-items:center;justify-content:center;padding:32px;opacity:0;transition:opacity .2s var(--ease-out)}.code-fullscreen-overlay.is-open{opacity:1}.code-fullscreen-overlay .cf-card{width:min(1100px,100%);max-height:90vh;background:#1e1e2e;border-radius:14px;border:1px solid rgba(255,255,255,.08);box-shadow:0 30px 80px #00000080;display:flex;flex-direction:column;overflow:hidden}.code-fullscreen-overlay .cf-header{display:flex;align-items:center;justify-content:space-between;padding:12px 16px;background:#ffffff0a;border-bottom:1px solid rgba(255,255,255,.06)}.code-fullscreen-overlay .cf-title{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:13px;font-weight:600;color:#ffffffc7;letter-spacing:.02em}.code-fullscreen-overlay .cf-close{width:30px;height:30px;border-radius:8px;border:none;background:transparent;color:#ffffff8c;font-size:22px;line-height:1;cursor:pointer;font-family:inherit;transition:background .15s,color .15s}.code-fullscreen-overlay .cf-close:hover{background:#ffffff14;color:#fff}.code-fullscreen-overlay .cf-body{overflow:auto;padding:0;background:#1e1e2e}.code-fullscreen-overlay .cf-body div[class*=language-]{margin:0!important;border-radius:0!important;border:none!important;box-shadow:none!important;max-height:none!important}.code-fullscreen-overlay .cf-body div[class*=language-] pre{max-height:none!important}.book-page .vp-doc .img-caption{display:block;margin:6px auto 4px;font-size:12.5px;line-height:1.5;color:var(--vp-c-text-3);font-style:italic;text-align:center;letter-spacing:.01em;max-width:80ch}.book-page .vp-doc p:has(>img){text-align:center}.book-page .vp-doc p>img+.img-caption{margin-top:6px}.book-page .vp-doc .mermaid-caption{display:block;margin:12px auto 0;padding:0;font-size:13px;line-height:1.55;color:var(--vp-c-text-3);font-style:italic;text-align:center;max-width:80ch}.book-page .vp-doc .header-anchor{position:relative}.book-page .vp-doc .header-anchor[data-copied]:after{content:"链接已复制";position:absolute;left:50%;top:-28px;transform:translate(-50%);white-space:nowrap;padding:3px 10px;border-radius:999px;background:var(--vp-c-brand-1);color:#fff;font-size:11px;font-weight:600;letter-spacing:.05em;box-shadow:0 4px 14px color-mix(in oklab,var(--vp-c-brand-1) 36%,transparent);pointer-events:none;animation:anchor-copied-pop 1.4s cubic-bezier(.2,0,0,1) forwards}.dark .book-page .vp-doc .header-anchor[data-copied]:after{background:#c4f857;color:#0a0b0f;box-shadow:0 4px 14px #c4f85747}.book-page .vp-doc .header-anchor[data-copied=fail]:after{content:"复制失败";background:#ef4444;box-shadow:0 4px 12px #ef444459}@keyframes anchor-copied-pop{0%{opacity:0;transform:translate(-50%) translateY(4px)}15%{opacity:1;transform:translate(-50%) translateY(0)}80%{opacity:1;transform:translate(-50%) translateY(0)}to{opacity:0;transform:translate(-50%) translateY(-4px)}}.book-page .vp-doc>h1+p,.book-page .vp-doc .content-container>h1+p{font-size:16px;line-height:1.85;color:var(--vp-c-text-2);padding:4px 0 4px 14px;border-left:3px solid color-mix(in oklab,var(--vp-c-brand-1) 38%,transparent);margin:4px 0 28px;letter-spacing:.005em}.book-page .vp-doc kbd{display:inline-block;padding:1px 7px;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:.82em;font-weight:600;line-height:1.5;color:var(--vp-c-text-1);background:var(--vp-c-bg-soft);border:1px solid var(--vp-c-divider);border-bottom-width:2px;border-radius:5px;box-shadow:0 1px #0f172a0a;vertical-align:1px;white-space:nowrap}.book-page .vp-doc mark{background:linear-gradient(180deg,transparent 55%,rgba(245,158,11,.35) 55%);color:inherit;padding:0 2px;border-radius:1px}.dark .book-page .vp-doc mark{background:linear-gradient(180deg,transparent 55%,rgba(245,158,11,.55) 55%)}.book-page .vp-doc mark.jt-hl{background:linear-gradient(180deg,transparent 55%,rgba(250,204,21,.55) 55%);cursor:help;transition:background .15s var(--ease-out)}.book-page .vp-doc mark.jt-hl:hover{background:linear-gradient(180deg,transparent 50%,rgba(250,204,21,.7) 50%)}.dark .book-page .vp-doc mark.jt-hl{background:linear-gradient(180deg,transparent 55%,rgba(250,204,21,.5) 55%)}.book-page .vp-doc a[href^=http]:not([href*="yangyitao.com"]):after{content:"↗";display:inline-block;font-size:.78em;margin-left:2px;opacity:.55;vertical-align:1px}.book-page .vp-doc a[href^=http]:not([href*="yangyitao.com"]):hover:after{opacity:1}.book-page .vp-doc .line-numbers-wrapper{background:#00000029!important;border-right:1px solid rgba(255,255,255,.05)!important;color:#ffffff52!important;padding-top:20px!important;padding-bottom:20px!important;font-family:ui-monospace,SFMono-Regular,Menlo,monospace!important;font-size:12px!important;text-align:right!important;user-select:none;width:42px!important;transition:color .2s,background .2s}.book-page .vp-doc div[class*=language-]:hover .line-numbers-wrapper{color:#ffffff85!important}.book-page .vp-doc div[class*=language-].line-numbers-mode pre{padding-left:60px!important}.book-page .vp-doc .line-numbers-wrapper .highlighted{background:linear-gradient(to right,color-mix(in oklab,var(--vp-c-brand-1) 20%,transparent),transparent);color:#ffffffd9!important}.book-page .vp-doc div[class*=language-] pre code .highlighted{background:color-mix(in oklab,var(--vp-c-brand-1) 18%,transparent);box-shadow:inset 3px 0 0 var(--vp-c-brand-1);display:block;margin:0 -24px;padding:0 24px;width:calc(100% + 48px)}.book-page .vp-doc div[class*=language-] pre code .diff.add{background:#10b98129;box-shadow:inset 3px 0 #10b981;display:block;margin:0 -24px;padding:0 24px;width:calc(100% + 48px)}.book-page .vp-doc div[class*=language-] pre code .diff.add:before{content:"+";position:absolute;left:4px;color:#10b981;font-weight:700;opacity:.8}.book-page .vp-doc div[class*=language-] pre code .diff.remove{background:#ef444429;box-shadow:inset 3px 0 #ef4444;display:block;margin:0 -24px;padding:0 24px;width:calc(100% + 48px);opacity:.75;text-decoration:line-through;text-decoration-color:#ef444466}.book-page .vp-doc div[class*=language-] pre code .diff.remove:before{content:"−";position:absolute;left:4px;color:#ef4444;font-weight:700;opacity:.8}.book-page .vp-doc div[class*=language-] pre code .line{position:relative}.book-page .vp-doc .line-numbers-wrapper .diff.add{background:#10b98124;color:#10b981d9!important}.book-page .vp-doc .line-numbers-wrapper .diff.remove{background:#ef444424;color:#ef4444cc!important}.book-page .vp-doc .lnw-copyable{cursor:pointer!important}.book-page .vp-doc .lnw-copyable:hover{background:color-mix(in oklab,var(--vp-c-brand-1) 18%,transparent)!important;color:#ffffffc7!important}.book-page .vp-doc .line-just-copied{background:#10b98138!important;box-shadow:inset 3px 0 #10b981;animation:line-copy-flash 1.1s cubic-bezier(.2,0,0,1) forwards}@keyframes line-copy-flash{0%{background:#10b98152}60%{background:#10b98138}to{background:transparent;box-shadow:none}}.book-page .vp-doc ul>li,.book-page .vp-doc ol>li{position:relative;padding-left:2px;transition:padding-left .18s var(--ease-out)}.book-page .vp-doc ul>li:before,.book-page .vp-doc ol>li:before{content:"";position:absolute;left:-10px;top:.45em;bottom:.45em;width:2px;border-radius:1px;background:linear-gradient(180deg,var(--vp-c-brand-1),var(--vp-c-brand-2));opacity:0;transform:scaleY(.4);transform-origin:center;transition:opacity .18s cubic-bezier(.2,0,0,1),transform .18s cubic-bezier(.2,0,0,1);pointer-events:none}.book-page .vp-doc ul>li:hover:before,.book-page .vp-doc ol>li:hover:before{opacity:.7;transform:scaleY(1)}.book-page .vp-doc ul>li:hover,.book-page .vp-doc ol>li:hover{padding-left:6px}.book-page .vp-doc .para-anchor{position:absolute;top:4px;right:-28px;width:24px;height:24px;border-radius:6px;background:transparent;border:1px solid transparent;color:var(--vp-c-text-3);cursor:pointer;font-size:13px;font-weight:700;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;line-height:1;display:flex;align-items:center;justify-content:center;opacity:0;transition:opacity .18s var(--ease-out),background .18s var(--ease-out),color .18s var(--ease-out),border-color .18s var(--ease-out);user-select:none}.book-page .vp-doc p:hover>.para-anchor{opacity:.55}.book-page .vp-doc .para-anchor:hover{opacity:1!important;color:var(--vp-c-brand-1);background:var(--vp-c-bg-soft);border-color:var(--vp-c-divider)}.book-page .vp-doc .para-anchor[data-copied]{opacity:1!important;color:#fff;background:#10b981;border-color:transparent}.book-page .vp-doc .para-anchor[data-copied=fail]{background:#ef4444}.book-page .vp-doc .para-anchor[data-copied]:after{content:"段落链接已复制";position:absolute;right:32px;top:50%;transform:translateY(-50%);white-space:nowrap;padding:3px 9px;border-radius:999px;background:#10b981;color:#fff;font-size:11px;font-weight:700;letter-spacing:.05em;font-family:var(--vp-font-family-base);box-shadow:0 4px 12px #10b98159;pointer-events:none;animation:copy-pill-pop 1.6s cubic-bezier(.2,0,0,1) forwards}.book-page .vp-doc .para-anchor[data-copied=fail]:after{content:"复制失败";background:#ef4444;box-shadow:0 4px 12px #ef444459}@media(max-width:900px){.book-page .vp-doc .para-anchor{position:relative;right:auto;top:auto;margin-left:6px;display:inline-flex;vertical-align:middle}}.kbd-help-overlay{position:fixed;inset:0;z-index:100;background:#0f172a6b;backdrop-filter:blur(2px);display:flex;align-items:center;justify-content:center;padding:24px;animation:kbd-fade-in .2s cubic-bezier(.2,0,0,1)}.kbd-help-card{background:var(--vp-c-bg);color:var(--vp-c-text-1);border:1px solid var(--vp-c-divider);border-radius:14px;padding:20px 24px 22px;width:min(440px,100%);box-shadow:var(--shadow-5);animation:kbd-pop-in .22s cubic-bezier(.2,0,0,1)}.kbd-help-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px;padding-bottom:12px;border-bottom:1px solid var(--vp-c-divider)}.kbd-help-header h3{margin:0;font-size:16px;font-weight:700;letter-spacing:-.01em}.kbd-help-close{width:28px;height:28px;border-radius:6px;border:none;background:transparent;color:var(--vp-c-text-3);font-size:22px;line-height:1;cursor:pointer;font-family:inherit;transition:background .18s var(--ease-out),color .18s var(--ease-out)}.kbd-help-close:hover{background:var(--vp-c-bg-soft);color:var(--vp-c-text-1)}.kbd-help-grid{display:grid;gap:10px}.kbd-help-grid .kbd-row{display:grid;grid-template-columns:auto auto 1fr;align-items:center;gap:6px;font-size:13.5px;color:var(--vp-c-text-2)}.kbd-help-grid .kbd-row span{margin-left:8px}.kbd-help-grid kbd{display:inline-flex;align-items:center;justify-content:center;min-width:22px;padding:2px 7px;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:12px;font-weight:700;color:var(--vp-c-text-1);background:var(--vp-c-bg-soft);border:1px solid var(--vp-c-divider);border-bottom-width:2px;border-radius:5px;line-height:1.4}@keyframes kbd-fade-in{0%{opacity:0}to{opacity:1}}@keyframes kbd-pop-in{0%{opacity:0;transform:translateY(8px) scale(.97)}to{opacity:1;transform:translateY(0) scale(1)}}.book-page .vp-doc .chapter-intro-box{margin:18px 0 28px;background:linear-gradient(135deg,color-mix(in srgb,var(--vp-c-brand-1) 4%,var(--vp-c-bg-soft)),var(--vp-c-bg-soft));border:1px solid var(--vp-c-divider);border-radius:12px;overflow:hidden}.book-page .vp-doc .chapter-intro-box .cib-header{display:flex;align-items:center;gap:14px;width:100%;padding:12px 16px;background:transparent;border:none;cursor:pointer;color:var(--vp-c-text-1);font:inherit;transition:background .18s cubic-bezier(.2,0,0,1)}.book-page .vp-doc .chapter-intro-box .cib-header:hover{background:color-mix(in oklab,var(--vp-c-brand-1) 7%,transparent)}.book-page .vp-doc .chapter-intro-box .cib-title{display:inline-flex;align-items:center;gap:7px;font-size:13px;font-weight:600;letter-spacing:.02em;color:var(--vp-c-text-1)}.book-page .vp-doc .chapter-intro-box .cib-title svg{color:var(--vp-c-brand-1);opacity:.85}.book-page .vp-doc .chapter-intro-box .cib-meta{display:inline-flex;align-items:center;gap:5px;margin-left:auto;margin-right:8px;font-size:12px;color:var(--vp-c-text-3);font-weight:500}.book-page .vp-doc .chapter-intro-box .cib-meta .cib-sep{opacity:.5}.book-page .vp-doc .chapter-intro-box .cib-chevron{display:inline-flex;align-items:center;color:var(--vp-c-text-3);transition:transform .25s cubic-bezier(.2,0,0,1)}.book-page .vp-doc .chapter-intro-box.is-collapsed .cib-chevron{transform:rotate(-90deg)}.book-page .vp-doc .chapter-intro-box .cib-list{list-style:none;padding:4px 12px 12px;margin:0;max-height:900px;transition:max-height .3s cubic-bezier(.2,0,0,1),opacity .2s cubic-bezier(.2,0,0,1),padding .25s cubic-bezier(.2,0,0,1);overflow:hidden;display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:2px 12px}.book-page .vp-doc .chapter-intro-box.is-collapsed .cib-list{max-height:0;opacity:0;padding-top:0;padding-bottom:0}.book-page .vp-doc .chapter-intro-box .cib-list li{margin:0;padding:0}.book-page .vp-doc .chapter-intro-box .cib-list li::marker{content:none}.book-page .vp-doc .chapter-intro-box .cib-list a{display:flex;align-items:baseline;gap:10px;padding:5px 8px;border-radius:6px;text-decoration:none;color:var(--vp-c-text-2);font-size:13.5px;line-height:1.5;transition:background .15s var(--ease-out),color .15s var(--ease-out)}.book-page .vp-doc .chapter-intro-box .cib-list a:hover{background:var(--vp-c-bg);color:var(--vp-c-brand-1)}.book-page .vp-doc .chapter-intro-box .cib-list .cib-num{flex-shrink:0;font-family:JetBrains Mono,ui-monospace,monospace;font-size:11px;font-weight:500;color:var(--vp-c-brand-1);opacity:.65;letter-spacing:.04em}.book-page .vp-doc .chapter-intro-box .cib-list .cib-text{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}@media(max-width:640px){.book-page .vp-doc .chapter-intro-box .cib-list{grid-template-columns:1fr}.book-page .vp-doc .chapter-intro-box .cib-header{padding:10px 14px;gap:10px;flex-wrap:wrap}.book-page .vp-doc .chapter-intro-box .cib-meta{font-size:11.5px}}html.reading-focus .chapter-intro-box{display:none!important}.book-header:has(.bh-hero)+.vp-doc>h1:first-of-type{display:none}.jt-sb-toggle{position:absolute;top:8px;right:8px;z-index:3;width:26px;height:26px;padding:0;border:1px solid var(--vp-c-divider);border-radius:6px;background:var(--vp-c-bg);color:var(--vp-c-text-3);display:inline-flex;align-items:center;justify-content:center;cursor:pointer;transition:opacity .15s cubic-bezier(.2,0,0,1),color .15s cubic-bezier(.2,0,0,1),border-color .15s cubic-bezier(.2,0,0,1);opacity:0}.VPSidebar:hover .jt-sb-toggle,.jt-sb-toggle:focus-visible{opacity:1}.jt-sb-toggle:hover{color:var(--vp-c-brand-1);border-color:color-mix(in oklab,var(--vp-c-brand-1) 45%,transparent)}.jt-sb-reopen{position:fixed;left:0;top:50%;transform:translateY(-50%);z-index:22;width:30px;min-height:96px;padding:10px 4px;border:1px solid var(--vp-c-divider);border-left:none;border-radius:0 12px 12px 0;background:linear-gradient(90deg,var(--vp-c-bg) 0%,var(--vp-c-bg-soft) 100%);color:var(--vp-c-text-2);box-shadow:var(--shadow-4);display:inline-flex;flex-direction:column;align-items:center;justify-content:center;gap:8px;cursor:pointer;transition:width .2s cubic-bezier(.2,0,0,1),color .2s cubic-bezier(.2,0,0,1),border-color .2s cubic-bezier(.2,0,0,1),box-shadow .22s cubic-bezier(.2,0,0,1),opacity .2s cubic-bezier(.2,0,0,1);opacity:0;pointer-events:none}.jt-sb-reopen.is-visible{opacity:1;pointer-events:auto}.jt-sb-reopen .sbr-label{writing-mode:vertical-rl;text-orientation:upright;font-size:11px;font-weight:600;letter-spacing:.12em;color:var(--vp-c-text-2)}.jt-sb-reopen:hover{width:36px;color:var(--vp-c-brand-1);border-color:color-mix(in oklab,var(--vp-c-brand-1) 45%,transparent);box-shadow:0 8px 24px color-mix(in oklab,var(--vp-c-brand-1) 28%,transparent);background:linear-gradient(90deg,color-mix(in srgb,var(--vp-c-brand-1) 6%,var(--vp-c-bg)),var(--vp-c-bg-soft))}.jt-sb-reopen:hover .sbr-label{color:var(--vp-c-brand-1)}html.dark .jt-sb-reopen{background:linear-gradient(90deg,#1e2332f2,#141824f2);box-shadow:0 6px 20px #0006}@media(min-width:960px){html.jt-sidebar-collapsed .VPSidebar{transform:translate(calc(-1 * var(--vp-sidebar-width, 272px)));opacity:0;pointer-events:none;transition:transform .25s var(--ease-out),opacity .2s var(--ease-out)}}@media(min-width:1280px){html.jt-sidebar-collapsed .VPContent.has-sidebar{padding-left:calc(var(--vp-sidebar-width, 272px) * .6)!important}html.jt-sidebar-collapsed .book-page .VPDoc.has-aside .content-container{max-width:1069px!important}html.jt-sidebar-collapsed .book-page .VPDoc:not(.has-aside) .content-container{max-width:1009px!important}}@media(min-width:1440px){html.jt-sidebar-collapsed .book-page .VPDoc.has-aside .content-container{max-width:1189px!important}}@media(max-width:959px){.jt-sb-toggle,.jt-sb-reopen{display:none!important}}html.reading-focus .jt-sb-toggle,html.reading-focus .jt-sb-reopen{display:none!important}.jt-top-progress{position:fixed;top:0;left:0;right:0;height:2px;z-index:40;background:transparent;pointer-events:none}.jt-top-progress-fill{height:100%;transform-origin:left center;transform:scaleX(0);background:linear-gradient(90deg,var(--vp-c-brand-1),#a5e043 55%,var(--vp-c-brand-2));box-shadow:0 0 8px color-mix(in oklab,var(--vp-c-brand-1) 50%,transparent);will-change:transform;transition:transform .08s linear}html.dark .jt-top-progress-fill{background:linear-gradient(90deg,#c4f857,#a5e043 55%,#6b9e2c);box-shadow:0 0 10px #c4f8578c}html.reading-focus .jt-top-progress{display:none}.reader-prefs-btn{position:fixed;right:22px;bottom:166px;z-index:24;width:40px;height:40px;border-radius:50%;border:1px solid var(--vp-c-divider);background:var(--vp-c-bg);color:var(--vp-c-text-3);cursor:pointer;box-shadow:var(--shadow-3);display:flex;align-items:center;justify-content:center;transition:color .18s var(--ease-out),border-color .18s var(--ease-out),background .18s var(--ease-out),transform .18s var(--ease-out)}.reader-prefs-btn:hover{transform:scale(1.05);color:var(--vp-c-brand-1);border-color:color-mix(in oklab,var(--vp-c-brand-1) 45%,transparent)}.reader-prefs-btn .rp-aa{font-family:Georgia,Times New Roman,serif;font-weight:600;font-size:15px;letter-spacing:-.02em;line-height:1}.reader-prefs-btn .rp-aa:first-letter{font-size:18px}.reader-prefs-btn.is-open{background:linear-gradient(135deg,var(--vp-c-brand-1),var(--vp-c-brand-2));color:#fff;border-color:transparent;box-shadow:0 6px 18px color-mix(in oklab,var(--vp-c-brand-1) 40%,transparent)}.reader-prefs-panel{position:fixed;right:72px;bottom:148px;z-index:25;width:240px;padding:14px;background:var(--vp-c-bg);border:1px solid var(--vp-c-divider);border-radius:12px;box-shadow:var(--shadow-4);opacity:0;transform:translateY(6px) scale(.98);pointer-events:none;transition:opacity .18s var(--ease-out),transform .18s var(--ease-out)}html.dark .reader-prefs-panel{box-shadow:0 14px 40px #00000080,0 0 0 1px #94a3b814}.reader-prefs-panel.is-open{opacity:1;transform:translateY(0) scale(1);pointer-events:auto}.reader-prefs-panel .rp-row{display:flex;align-items:center;gap:10px;margin-bottom:10px}.reader-prefs-panel .rp-label{flex-shrink:0;width:32px;font-size:12.5px;font-weight:600;color:var(--vp-c-text-2);letter-spacing:.02em}.reader-prefs-panel .rp-seg{flex:1;display:flex;gap:2px;padding:2px;background:var(--vp-c-bg-soft);border-radius:7px}.reader-prefs-panel .rp-seg button{flex:1;padding:5px 2px;border:none;border-radius:5px;background:transparent;color:var(--vp-c-text-2);font-size:12px;font-weight:500;cursor:pointer;transition:background .15s var(--ease-out),color .15s var(--ease-out)}.reader-prefs-panel .rp-seg button:hover{color:var(--vp-c-text-1)}.reader-prefs-panel .rp-seg button.on{background:var(--vp-c-bg);color:var(--vp-c-brand-1);box-shadow:var(--shadow-1);font-weight:600}.reader-prefs-panel .rp-reset{display:block;width:100%;margin-top:6px;padding:6px 8px;border:1px solid var(--vp-c-divider);border-radius:6px;background:transparent;color:var(--vp-c-text-3);font-size:12px;cursor:pointer;transition:color .15s cubic-bezier(.2,0,0,1),border-color .15s cubic-bezier(.2,0,0,1)}.reader-prefs-panel .rp-reset:hover{color:var(--vp-c-text-1);border-color:var(--vp-c-text-3)}.book-page .vp-doc p,.book-page .vp-doc li{font-size:calc(16px * var(--jt-reader-font-scale, 1));line-height:var(--jt-reader-line-h, 1.85)}.book-page .vp-doc h2{font-size:calc(1.65em * var(--jt-reader-font-scale, 1))}.book-page .vp-doc h3{font-size:calc(1.35em * var(--jt-reader-font-scale, 1))}@media(min-width:1200px){html.jt-reader-wide .VPDoc .content-container{max-width:960px!important}html.jt-reader-wide .VPDoc.has-aside .content-container{max-width:900px!important}}@media(max-width:640px){.reader-prefs-btn,.reader-prefs-panel{display:none}}html.reading-focus .reader-prefs-btn,html.reading-focus .reader-prefs-panel{display:none}.focus-mode-btn,.reader-prefs-btn,.reader-prefs-panel{display:none!important}:root{--jt-accent: #c4f857;--jt-accent-soft: rgba(196, 248, 87, .14);--jt-accent-soft-hover: rgba(196, 248, 87, .22);--jt-accent-dim: rgba(196, 248, 87, .55)}html.dark.book-page{--vp-c-bg: #0a0b0f;--vp-c-bg-alt: #0c0d13;--vp-c-bg-soft: #141722;--vp-c-bg-elv: #0e1016;--vp-c-divider: #1f2430;--vp-c-border: #1f2430;--vp-c-gutter: #1f2430;--vp-c-text-1: #ecedf0;--vp-c-text-2: #a4a9b7;--vp-c-text-3: #6b7080}html.dark.book-page .book-page .vp-doc :not(pre)>code,html.dark .book-page .vp-doc :not(pre)>code{background:#c4f8570f;color:#e0f5b3;border:1px solid rgba(196,248,87,.15)}html.dark.book-page .VPSidebar{background:var(--vp-c-bg-alt)!important;border-right-color:var(--vp-c-divider)}html.dark.book-page .VPSidebarItem .link{border-radius:6px;padding:7px 10px!important;margin:2px 8px;transition:background .15s var(--ease-out),color .15s var(--ease-out)}html.dark.book-page .VPSidebarItem .link:hover{background:var(--vp-c-bg-soft)}html.dark.book-page .VPSidebarItem.is-active>.item .link,html.dark.book-page .VPSidebarItem.is-active>.link{background:#c4f8570d!important;color:var(--jt-accent)!important;box-shadow:inset 2px 0 0 var(--jt-accent)}html.dark.book-page .VPSidebarItem.is-active>.item .link .text,html.dark.book-page .VPSidebarItem.is-active>.link .text{color:var(--jt-accent)!important;font-weight:600}html.dark.book-page .VPSidebarItem.level-0>.item>h2,html.dark.book-page .VPSidebarItem.level-0>.item>.section-header{color:var(--vp-c-text-3)!important;font-size:10.5px!important;letter-spacing:.12em;text-transform:uppercase}html.dark.book-page .VPSidebarItem .sb-progress-fill{background:linear-gradient(90deg,var(--jt-accent),#a5e043)!important}html.dark.book-page .book-page .vp-doc h1{font-size:clamp(32px,4.2vw,52px);font-weight:800;letter-spacing:-.025em;line-height:1.08;color:var(--vp-c-text-1);margin:.3em 0 .5em}html.dark.book-page .book-page .vp-doc h2{font-weight:700;letter-spacing:-.015em;color:var(--vp-c-text-1)}html.dark.book-page .chapter-cover-label{color:var(--jt-accent)!important}html.dark.book-page .chapter-cover-label .ccl-en{color:var(--jt-accent)!important;font-weight:600}html.dark.book-page .chapter-cover-label .ccl-zh{color:var(--vp-c-text-2)!important}html.dark.book-page .book-page .vp-doc div[class*=language-]{background:var(--vp-c-bg-alt)!important;border:1px solid var(--vp-c-divider);border-radius:10px}html.dark.book-page .book-page .vp-doc div[class*=language-]:after{content:"";position:absolute;top:12px;left:14px;width:12px;height:12px;border-radius:50%;background:#5d6478;box-shadow:18px 0 #5d6478,36px 0 #5d6478;opacity:.55;pointer-events:none;z-index:2}html.dark.book-page .book-page .vp-doc div[class*=language-] pre{padding-top:36px!important;background:transparent!important}html.dark.book-page .book-page .vp-doc div[class*=language-].has-file-label:after{top:50px}html.dark.book-page .book-page .vp-doc .code-lang-badge{right:14px!important;color:var(--vp-c-text-3);background:transparent;border:1px solid var(--vp-c-divider);border-radius:999px;padding:1px 8px;font-size:10.5px;letter-spacing:.08em}html.dark.book-page .book-page .vp-doc .code-file-label{background:var(--vp-c-bg-elv);border-bottom:1px solid var(--vp-c-divider);color:var(--vp-c-text-2);padding-left:70px;padding-right:14px}html.dark.book-page .book-page .vp-doc .custom-block.tip{background:var(--jt-accent-soft)!important;border-color:#c4f85740!important;border-left-color:var(--jt-accent)!important;color:var(--vp-c-text-1)!important}html.dark.book-page .book-page .vp-doc .custom-block.tip .custom-block-title{color:var(--jt-accent)!important}html.dark.book-page .book-page .vp-doc .custom-block.tip a{color:var(--jt-accent)!important;text-decoration-color:#c4f85766}html.dark.book-page .book-page .VPDocAsideOutline{background:transparent!important;border-color:var(--vp-c-divider)!important}html.dark.book-page .jt-top-progress-fill{background:linear-gradient(90deg,var(--jt-accent),#a5e043 55%,#87b82e)!important;box-shadow:0 0 10px #c4f8578c!important}html.dark.book-page .book-page .vp-doc .chapter-intro-box{background:linear-gradient(135deg,rgba(196,248,87,.04),var(--vp-c-bg-alt))!important;border-color:var(--vp-c-divider)!important;border-left:2px solid var(--jt-accent)!important}html.dark.book-page .book-page .vp-doc .chapter-intro-box .cib-title svg,html.dark.book-page .book-page .vp-doc .chapter-intro-box .cib-list .cib-num{color:var(--jt-accent)!important}html.dark.book-page .book-page .vp-doc .chapter-intro-box .cib-list a:hover{color:var(--jt-accent)!important;background:var(--vp-c-bg-soft)!important}html.dark.book-page .book-page .vp-doc a:not(.VPButton):hover{color:var(--jt-accent);text-decoration-color:var(--jt-accent)}html.dark.book-page .ah-sync.is-cloud{background:var(--jt-accent-soft)!important;color:var(--jt-accent)!important}html.dark.book-page .ah-my-visits{color:var(--jt-accent)!important}html.dark.book-page .back-to-top-fab .btt-fill{stroke:var(--jt-accent)!important}html.dark.book-page .book-page .vp-doc ::selection{background:#c4f85747;color:#ecedf0}.VPSidebarItem .text .sb-num{display:inline-block;min-width:26px;margin-right:6px;font-family:JetBrains Mono,ui-monospace,monospace;font-size:11px;font-weight:500;letter-spacing:.02em;color:var(--vp-c-text-3);vertical-align:baseline}html.dark.book-page .VPSidebarItem .text .sb-num{color:#5d6478}html.dark.book-page .VPSidebarItem.is-active>.item .link .text .sb-num,html.dark.book-page .VPSidebarItem.is-active>.link .text .sb-num{color:var(--jt-accent)}.VPSidebarItem .text:has(.sb-read-mark) .sb-num{color:var(--vp-c-text-3)}.jt-sb-bookcard{padding:14px 18px;margin-bottom:8px;border-bottom:1px solid var(--vp-c-divider)}.jt-sb-bookcard .sbbc-meta{font-family:JetBrains Mono,ui-monospace,monospace;font-size:10.5px;font-weight:500;letter-spacing:.04em;text-transform:uppercase;color:var(--vp-c-text-3);margin-bottom:6px;font-variant-numeric:tabular-nums}.jt-sb-bookcard .sbbc-title{font-size:14.5px;font-weight:700;letter-spacing:-.01em;color:var(--vp-c-text-1);margin-bottom:10px;line-height:1.35}.jt-sb-bookcard .sbbc-prog{display:flex;align-items:center;gap:10px;font-family:JetBrains Mono,ui-monospace,monospace;font-size:10.5px;color:var(--vp-c-text-2);font-variant-numeric:tabular-nums}.jt-sb-bookcard .sbbc-bar{flex:1;height:4px;background:var(--vp-c-divider);border-radius:2px;overflow:hidden}.jt-sb-bookcard .sbbc-bar i{display:block;height:100%;background:linear-gradient(90deg,var(--vp-c-brand-1),var(--vp-c-brand-2));transition:width .3s cubic-bezier(.2,0,0,1)}html.dark.book-page .jt-sb-bookcard{background:transparent;border-bottom-color:#1f2430}html.dark.book-page .jt-sb-bookcard .sbbc-meta{color:#5d6478}html.dark.book-page .jt-sb-bookcard .sbbc-bar{background:#1a1e2c}html.dark.book-page .jt-sb-bookcard .sbbc-bar i{background:linear-gradient(90deg,var(--jt-accent),#9ad43e)}@media(max-width:959px){.jt-sb-bookcard{display:none}}html.dark .floating-actions .fa-btn,html[data-theme=dark] .floating-actions .fa-btn{background:#121620eb!important;border:1px solid rgba(148,163,184,.12)!important;color:#cbd5e1cc!important;box-shadow:0 2px 10px #00000059,0 8px 28px #00000040!important;backdrop-filter:none;-webkit-backdrop-filter:none}html.dark .floating-actions .fa-btn .fa-count,html[data-theme=dark] .floating-actions .fa-btn .fa-count{color:#94a3b8cc!important}html.dark .floating-actions .fa-btn:hover,html[data-theme=dark] .floating-actions .fa-btn:hover{background:#1c202cf2!important;border-color:#94a3b83d!important;color:#e2e8f0!important;transform:translateY(-1px)}html.dark .floating-actions .fa-btn.active,html[data-theme=dark] .floating-actions .fa-btn.active{background:#242838f2!important;border-color:#94a3b847!important;color:#f1f5f9!important}html.dark .floating-actions .fa-divider,html[data-theme=dark] .floating-actions .fa-divider{background:#94a3b81a!important}@media(min-width:960px){.book-page .VPDoc .content-container{max-width:100%!important}.book-page .VPDoc:not(.has-aside) .content-container{max-width:900px!important}.book-page .VPDoc.has-aside .content-container{max-width:880px!important}}@media(min-width:1280px){.book-page .VPDoc.has-aside .content-container{max-width:960px!important}}@media(min-width:1440px){.book-page .VPDoc.has-aside .content-container{max-width:1080px!important}}.book-page .jt-v3-stats{display:block;margin:0 0 20px;padding:0 2px}.book-page .jt-v3-stats .v3s-head{font-size:13px;font-weight:700;letter-spacing:0;text-transform:none;color:var(--vp-c-text-1);margin:0 0 10px}.book-page .jt-v3-stats .v3s-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px 14px}.book-page .jt-v3-stats .v3s-cell{min-width:0}.book-page .jt-v3-stats .v3s-num{font-size:18px;font-weight:700;letter-spacing:-.01em;color:var(--vp-c-text-1);line-height:1.2;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.book-page .jt-v3-stats .v3s-lbl{font-size:11px;color:var(--vp-c-text-3);margin-top:3px;letter-spacing:0}html.dark.book-page .jt-v3-stats .v3s-num{color:#e2e8f0}@media(max-width:959px){.book-page .jt-v3-stats{display:none!important}}html.reading-focus .jt-v3-stats{display:none!important}.book-page .jt-v3-notes{display:block;margin:20px 0 0;padding:14px 2px 0;border-top:1px solid var(--vp-c-divider)}.book-page .jt-v3-notes .v3n-head{font-size:13px;font-weight:700;letter-spacing:0;text-transform:none;color:var(--vp-c-text-1);margin:0 0 10px}.book-page .jt-v3-notes .v3n-list{display:flex;flex-direction:column;gap:8px}.book-page .jt-v3-notes .v3n-item{padding:9px 11px;border-radius:8px;background:var(--vp-c-bg);border:1px solid var(--vp-c-divider);cursor:pointer;transition:border-color .15s var(--ease-out),transform .1s var(--ease-out)}.book-page .jt-v3-notes .v3n-item:hover{border-color:var(--vp-c-brand-1, #3b7e00);transform:translateY(-1px)}.book-page .jt-v3-notes .v3n-text{font-size:12.5px;line-height:1.55;color:var(--vp-c-text-1);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;text-overflow:ellipsis;word-break:break-word}.book-page .jt-v3-notes .v3n-meta{font-size:10.5px;color:var(--vp-c-text-3);margin-top:4px;font-family:JetBrains Mono,ui-monospace,monospace;letter-spacing:.03em}.book-page .jt-v3-notes .v3n-empty{font-size:12px;color:var(--vp-c-text-3);line-height:1.6;padding:4px 2px}.book-page .jt-v3-notes .v3n-add{display:block;width:100%;margin-top:10px;padding:8px 10px;border:1px dashed var(--vp-c-divider);border-radius:8px;background:transparent;color:var(--vp-c-text-2);font-size:12px;font-weight:500;cursor:pointer;transition:color .15s cubic-bezier(.2,0,0,1),border-color .15s cubic-bezier(.2,0,0,1),border-style .15s cubic-bezier(.2,0,0,1)}.book-page .jt-v3-notes .v3n-add:hover{color:var(--vp-c-brand-1, #3b7e00);border-color:var(--vp-c-brand-1, #3b7e00);border-style:solid}html.dark.book-page .jt-v3-notes{border-top-color:#94a3b826}html.dark.book-page .jt-v3-notes .v3n-item{background:#0e101699;border-color:#94a3b81f}html.dark.book-page .jt-v3-notes .v3n-text{color:#e2e8f0}@media(max-width:959px){.book-page .jt-v3-notes{display:none!important}}html.reading-focus .jt-v3-notes{display:none!important}.book-page .jt-sb-bookcard{padding:16px 18px 18px;border:1px solid var(--vp-c-divider);border-radius:14px;background:var(--vp-c-bg);margin:16px 12px}.book-page .jt-sb-bookcard .sbbc-badge{display:inline-block;padding:3px 10px;margin-bottom:10px;border-radius:999px;background:var(--vp-c-bg-soft);color:var(--vp-c-text-2);font-size:11px;font-weight:600;letter-spacing:.01em;text-transform:none}.book-page .jt-sb-bookcard .sbbc-title{font-size:16px;font-weight:700;line-height:1.3;color:var(--vp-c-text-1);margin-bottom:14px}.book-page .jt-sb-bookcard .sbbc-meta{display:flex;align-items:baseline;justify-content:space-between;font-size:11.5px;color:var(--vp-c-text-3);margin-bottom:8px}.book-page .jt-sb-bookcard .sbbc-meta b{color:var(--vp-c-text-1);font-size:14px;font-weight:700}.book-page .jt-sb-bookcard .sbbc-bar{height:3px;background:var(--vp-c-divider);border-radius:2px;overflow:hidden}.book-page .jt-sb-bookcard .sbbc-bar i{display:block;height:100%;background:#0a0b0f;transition:width .3s var(--ease-out)}html.dark .book-page .jt-sb-bookcard{background:#1e233273}html.dark .book-page .jt-sb-bookcard .sbbc-badge{background:#8b5cf638;color:#c4b5fd}html.dark .book-page .jt-sb-bookcard .sbbc-bar i{background:var(--jt-accent)}.book-page .VPSidebarItem .link{font-size:14px;padding:8px 12px!important}.book-page .VPSidebarItem .text .sb-num{font-size:11.5px;min-width:22px;margin-right:6px;color:var(--vp-c-text-3)}.book-page .VPSidebarItem.is-active>.item .link,.book-page .VPSidebarItem.is-active>.link{background:transparent!important;color:var(--vp-c-text-1)!important;font-weight:600!important}.book-page .VPSidebarItem.is-active>.item .link .text,.book-page .VPSidebarItem.is-active>.link .text{color:var(--vp-c-text-1)!important}.book-page .VPSidebarItem .text .sb-st{display:inline-block;margin-left:auto;width:6px;height:6px;border-radius:50%;border:1.5px solid var(--vp-c-text-3);opacity:.45;flex-shrink:0;transition:background .18s cubic-bezier(.2,0,0,1),border-color .18s cubic-bezier(.2,0,0,1),opacity .18s cubic-bezier(.2,0,0,1),width .18s cubic-bezier(.2,0,0,1),height .18s cubic-bezier(.2,0,0,1)}.book-page .VPSidebarItem .text:has(.sb-read-mark) .sb-st{background:#10b981;border-color:#10b981;opacity:1}.book-page .VPSidebarItem.is-active .text .sb-st{width:7px;height:7px;background:var(--vp-c-text-1);border-color:var(--vp-c-text-1);opacity:1}html.dark.book-page .VPSidebarItem.is-active .text .sb-st{background:var(--jt-accent);border-color:var(--jt-accent)}html.dark.book-page .VPSidebarItem .text:has(.sb-read-mark) .sb-st{background:#34d399;border-color:#34d399}.book-page .VPSidebarItem .text .sb-read-mark{display:none!important}.book-page .VPSidebarItem .text{display:flex;align-items:center;min-width:0;width:100%;flex:1 1 auto;margin:0!important;padding:0!important;line-height:1.3!important}.book-page .VPSidebarItem .text .sb-title{flex:0 1 auto;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;line-height:1.3}.book-page .VPSidebarItem .text .sb-st{margin-left:auto!important}.book-page .VPSidebar .VPSidebarItem.level-0.jt-sb-book-dup>.item{display:none!important}.book-page .VPSidebar .VPSidebarItem.level-0.jt-sb-book-dup{margin-top:0!important;padding-top:0!important}.book-page .VPSidebar .VPSidebarItem.level-0>.item{display:flex;align-items:center;cursor:pointer;position:relative}.book-page .VPSidebar .VPSidebarItem.level-0>.item .caret{order:-1;margin-right:7px;padding:0;width:18px;height:18px;background:transparent;flex-shrink:0;position:relative}.book-page .VPSidebar .VPSidebarItem.level-0>.item .caret-icon{display:none!important}.book-page .VPSidebar .VPSidebarItem.level-0>.item .caret:before{content:"▸";position:absolute;inset:0;display:flex;align-items:center;justify-content:center;font-size:15px;line-height:1;color:#a3a3a3;transform:rotate(90deg);transition:transform .2s cubic-bezier(.2,0,0,1),color .18s cubic-bezier(.2,0,0,1)}.book-page .VPSidebar .VPSidebarItem.level-0.collapsed>.item .caret:before{transform:rotate(0)}.book-page .VPSidebar .VPSidebarItem.level-0>.item:hover .caret:before{color:var(--vp-c-text-1)}html.dark.book-page .VPSidebar .VPSidebarItem.level-0>.item .caret:before{color:#737373}.book-page .VPSidebarItem.is-active>.item .link .text .sb-num,.book-page .VPSidebarItem.is-active>.link .text .sb-num{color:var(--vp-c-text-1)!important;font-weight:600}html.dark.book-page .VPSidebarItem.is-active>.item .link,html.dark.book-page .VPSidebarItem.is-active>.link{background:transparent!important;box-shadow:none!important}.book-page .VPSidebar{padding-left:10px!important;padding-right:10px!important}.book-page .VPSidebarGroup,.book-page .VPSidebar .group{padding-left:0!important;padding-right:0!important}.book-page .VPSidebar .VPSidebarItem.level-1{padding-top:0!important;padding-bottom:0!important}.book-page .VPSidebar .VPSidebarItem.level-1>.item{margin:1px 0!important;padding:0!important;border-radius:10px;background:transparent!important;box-shadow:none!important}.book-page .VPSidebar .VPSidebarItem.level-1>.item:before{display:none!important}.book-page .VPSidebar .VPSidebarItem.level-1>.item .link{padding:4px 10px!important;border-radius:10px;line-height:1.3!important;min-height:0!important;height:auto!important;width:100%;display:flex;align-items:center;font-size:13.5px!important}.book-page .VPSidebar .VPSidebarItem.level-1>.item:hover{background:var(--vp-c-bg-soft)!important}.book-page .VPSidebar .VPSidebarItem.is-active.level-1>.item{background:var(--vp-c-bg-soft)!important;box-shadow:none!important;border-radius:10px!important}html.dark.book-page .VPSidebar .VPSidebarItem.is-active.level-1>.item{background:#c4f85714!important;box-shadow:none!important}.book-page .VPSidebar .VPSidebarItem.level-0:not(.jt-sb-book-dup){margin-top:14px!important;padding-bottom:2px!important}.book-page .VPSidebar .VPSidebarItem.level-0:not(.jt-sb-book-dup)>.item{padding:4px 14px!important}.book-page .VPSidebar .VPSidebarItem.level-0:not(.jt-sb-book-dup)>.item .text,.book-page .VPSidebar .VPSidebarItem.level-0:not(.jt-sb-book-dup)>.item .title{font-size:12px!important;font-weight:600!important;color:var(--vp-c-text-2)!important;letter-spacing:0!important;text-transform:none!important}.book-page .VPSidebar .VPSidebarItem.level-0>.items{padding-top:2px!important}.book-page .VPSidebar .group+.group{border-top:none!important;margin-top:8px!important;padding-top:0!important}.book-page .VPSidebar .group+.group:before{display:none!important}.book-page .VPSidebarItem .text .sb-read-mark{width:7px;height:7px;border-radius:50%;background:#10b981;color:transparent;margin-left:auto;padding:0;flex-shrink:0}.book-page .VPSidebarItem .text .sb-read-mark svg{display:none}html.dark.book-page .VPSidebarItem .text .sb-read-mark{background:#34d399}.book-page .jt-v3-stats{padding:14px 2px 0}.book-page .jt-v3-stats .v3s-head{margin-bottom:10px;font-size:11px;text-transform:none;letter-spacing:.02em;font-weight:600;color:var(--vp-c-text-2)}.book-page .jt-v3-stats .v3s-grid{grid-template-columns:repeat(4,1fr);gap:0 10px}.book-page .jt-v3-stats .v3s-num{font-size:15px;letter-spacing:-.01em}.book-page .jt-v3-stats .v3s-lbl{margin-top:2px;font-size:10.5px}.book-page .jt-v3-notes .v3n-item{background:#fffbeb!important;border-color:#f5c95d59!important;padding:12px 14px;border-radius:10px}.book-page .jt-v3-notes .v3n-item:hover{border-color:#f59e0b99!important;background:#fef6d8!important}.book-page .jt-v3-notes .v3n-text{font-size:13.5px;line-height:1.65;color:#3a2d10;-webkit-line-clamp:4}.book-page .jt-v3-notes .v3n-meta{font-size:11px;color:#8b6914;margin-top:6px;font-family:JetBrains Mono,ui-monospace,monospace}html.dark.book-page .jt-v3-notes .v3n-item{background:#78642833!important;border-color:#f5c95d40!important}html.dark.book-page .jt-v3-notes .v3n-text{color:#e8dba6}html.dark.book-page .jt-v3-notes .v3n-meta{color:#f5c95dbf}@media(min-width:1440px){.book-page .VPNavBar .container{max-width:100%!important}.book-page .VPNavBar.has-sidebar .content{padding-right:32px!important;padding-left:var(--vp-sidebar-width, 272px)!important}.book-page .VPNavBar .title{padding-left:22px!important;width:var(--vp-sidebar-width, 272px)!important}}@media(min-width:1440px){.book-page .VPSidebar{padding-left:22px!important;width:var(--vp-sidebar-width, 272px)!important}}@media(min-width:1440px){.book-page .VPDoc .aside-container{right:32px!important;left:auto!important}}.reading-progress{top:0!important;height:2px!important;background:var(--reader-prog-bar)!important;box-shadow:none!important;z-index:30!important}.book-page{background:var(--reader-surface-alt);color:var(--reader-ink)}.book-page .VPContent{background:var(--reader-surface-alt)}@media(min-width:960px){.book-page .VPSidebar{background:var(--reader-surface-alt)!important;border-right:1px solid var(--reader-border)!important;box-shadow:none!important;padding-top:20px!important}}.book-page .VPSidebar .group{padding:0 4px;margin-bottom:6px}.book-page .VPSidebar .VPSidebarItem.level-0>.item{padding:8px 10px!important}.book-page .VPSidebar .VPSidebarItem.level-0>.item>.text{font-family:var(--reader-sans);font-size:12.5px!important;font-weight:600!important;color:var(--reader-muted)!important;letter-spacing:0!important;text-transform:none!important;padding:0!important}.book-page .VPSidebar .VPSidebarItem.level-0>.item .caret{color:var(--reader-muted-2)!important}.book-page .VPSidebar .VPSidebarItem.level-1>.item{margin:1px 4px!important;padding:6px 10px 6px 22px!important;border-radius:6px}.book-page .VPSidebar .VPSidebarItem.level-1>.item .text{font-size:13px!important;color:var(--reader-muted)!important;font-weight:400!important}.book-page .VPSidebar .VPSidebarItem.level-1>.item:hover{background:var(--reader-surface)!important}.book-page .VPSidebar .VPSidebarItem.level-1>.item:hover .text{color:var(--reader-ink)!important}.book-page .VPSidebar .VPSidebarItem.is-active.level-1>.item{background:var(--reader-surface)!important;box-shadow:inset 0 0 0 1px var(--reader-border),0 1px 2px #0000000a!important}.book-page .VPSidebar .VPSidebarItem.is-active.level-1>.item:before{display:none!important}.book-page .VPSidebar .VPSidebarItem.is-active.level-1>.item .text{color:var(--reader-ink)!important;font-weight:500!important}.book-page .VPDocAside .outline-title,.book-page .VPDocAside .VPDocAsideOutline .outline-title{font-family:var(--reader-sans)!important;font-size:11.5px!important;font-weight:600!important;color:var(--reader-muted-2)!important;letter-spacing:.04em;text-transform:uppercase;margin-bottom:12px}.book-page .VPDocAsideOutline .outline-link{font-size:12.5px!important;line-height:1.5!important;color:var(--reader-muted)!important;padding:4px 0 4px 12px!important;border-left:2px solid var(--reader-border);transition:color .15s,border-color .15s}.book-page .VPDocAsideOutline .outline-link.active{color:var(--reader-ink)!important;font-weight:500!important;border-left-color:var(--reader-ink)}.book-page .VPDocAsideOutline .outline-link:hover{color:var(--reader-ink)!important}.book-page .VPDocAsideOutline .outline-marker{display:none!important}.book-page .vp-doc h1{font-size:40px!important;line-height:1.15!important;letter-spacing:-.03em!important;font-weight:700!important;color:var(--reader-ink)!important;margin:0 0 14px!important}.book-page .vp-doc h2{font-size:26px!important;font-weight:700!important;letter-spacing:-.02em!important;margin:56px 0 16px!important;color:var(--reader-ink)!important;padding-top:0!important}.book-page .vp-doc h2:before,.book-page .vp-doc h2:after{display:none!important}.book-page .vp-doc h3{font-size:18.5px!important;font-weight:600!important;margin:36px 0 12px!important;letter-spacing:-.01em!important;color:var(--reader-ink)!important}.book-page .vp-doc h3:before{display:none!important}.book-page .vp-doc p{font-size:15.5px!important;line-height:1.75!important;color:var(--reader-ink)!important;opacity:.95;margin:0 0 20px!important}.book-page .vp-doc p strong{color:var(--reader-ink)!important;font-weight:600!important}.book-page .vp-doc ul,.book-page .vp-doc ol{padding-left:22px!important;margin:0 0 22px!important}.book-page .vp-doc li{font-size:15.5px!important;line-height:1.7!important;color:var(--reader-ink)!important;opacity:.95;margin-bottom:6px!important}.book-page .vp-doc :not(pre)>code{font-family:var(--reader-mono)!important;font-size:.86em!important;background:var(--reader-accent-soft)!important;color:var(--reader-accent)!important;border:1px solid var(--reader-tip-border)!important;padding:1.5px 6px!important;border-radius:4px!important;font-weight:500!important}.book-page .vp-doc div[class*=language-]{border:1px solid var(--reader-border)!important;border-radius:10px!important;background:var(--reader-surface)!important;margin:24px 0 28px!important;overflow:hidden!important}.book-page .vp-doc div[class*=language-] pre{background:var(--reader-surface-alt)!important;padding:14px 0!important;font-family:var(--reader-mono)!important;font-size:12.5px!important;line-height:1.65!important}.book-page .vp-doc div[class*=language-]:before{content:attr(data-language);position:absolute;top:10px;right:14px;font-family:var(--reader-mono);font-size:10.5px!important;color:var(--reader-muted)!important;padding:3px 8px;background:var(--reader-surface)!important;border:1px solid var(--reader-border);border-radius:4px;letter-spacing:.04em;text-transform:uppercase}.book-page .vp-doc blockquote{display:block;padding:14px 18px!important;background:var(--reader-tip-bg)!important;border:1px solid var(--reader-tip-border)!important;border-left:3px solid var(--reader-accent)!important;border-radius:0 8px 8px 0!important;margin:24px 0!important;color:var(--reader-ink)!important;position:relative}.book-page .vp-doc blockquote p{font-size:15.5px!important;line-height:1.75!important;margin:6px 0!important;color:var(--reader-ink)!important}.book-page .vp-doc blockquote p:first-child{margin-top:0!important}.book-page .vp-doc blockquote p:last-child{margin-bottom:0!important}.book-page .vp-doc blockquote p strong{color:var(--reader-ink)!important}.book-page .VPDocFooterLastUpdated{color:var(--reader-muted-2)!important;font-size:12.5px!important}.book-page .pager-link{padding:16px 18px!important;border:1px solid var(--reader-border)!important;border-radius:10px!important;background:var(--reader-surface)!important;transition:border-color .15s,box-shadow .15s}.book-page .pager-link:hover{border-color:var(--reader-border-strong)!important;box-shadow:0 4px 14px #0000000d}.book-page .pager-link .desc{font-size:11.5px!important;color:var(--reader-muted-2)!important;margin-bottom:5px!important}.book-page .pager-link .title{font-size:14px!important;font-weight:600!important;color:var(--reader-ink)!important;letter-spacing:-.005em}.book-page .VPNav .VPNavBar{background:color-mix(in oklab,var(--reader-surface-alt) 45%,transparent)!important;border-bottom:1px solid var(--reader-border)!important;backdrop-filter:saturate(180%) blur(14px)!important}.book-page .VPNav .VPNavBar .divider{border-bottom-color:transparent!important}.book-page .vp-doc{color:var(--reader-ink)}@media(max-width:959px){.book-page .VPSidebar{background:var(--reader-surface)!important}}html.dark.book-page{background:#0a0b0f}html.dark.book-page .VPContent{background:#0a0b0f!important}@media(min-width:960px){html.dark.book-page .VPSidebar{background:#0c0d13!important;border-right:1px solid #1f2430!important;box-shadow:none!important}}html.dark.book-page .VPSidebar .VPSidebarItem.level-0>.item>.text{font-family:JetBrains Mono,ui-monospace,monospace!important;font-size:10.5px!important;font-weight:600!important;color:#5d6478!important;letter-spacing:.05em!important;text-transform:uppercase!important}html.dark.book-page .VPSidebar .VPSidebarItem.level-0>.item .caret{color:#2a3044!important}html.dark.book-page .VPSidebar .VPSidebarItem.level-1>.item .text{color:#a4a9b7!important;font-size:13px!important;font-weight:400!important}html.dark.book-page .VPSidebar .VPSidebarItem.level-1>.item:hover{background:#141722!important;box-shadow:none!important}html.dark.book-page .VPSidebar .VPSidebarItem.level-1>.item:hover .text{color:#ecedf0!important}html.dark.book-page .VPSidebar .VPSidebarItem.is-active.level-1>.item{background:linear-gradient(90deg,rgba(196,248,87,.08),transparent 80%)!important;box-shadow:none!important;position:relative}html.dark.book-page .VPSidebar .VPSidebarItem.is-active.level-1>.item:before{content:""!important;display:block!important;position:absolute!important;left:0!important;top:6px!important;bottom:6px!important;width:2px!important;background:#c4f857!important;border-radius:0 2px 2px 0!important;box-shadow:0 0 8px #c4f85780!important}html.dark.book-page .VPSidebar .VPSidebarItem.is-active.level-1>.item .text{color:#c4f857!important;font-weight:500!important}html.dark.book-page .VPSidebar::-webkit-scrollbar-thumb{background:#1f2430!important}html.dark.book-page .reading-progress{background:linear-gradient(90deg,#c4f857,#9ad43e)!important;box-shadow:0 0 6px #c4f85766!important}html.dark.book-page .VPDocAside .outline-title,html.dark.book-page .VPDocAside .VPDocAsideOutline .outline-title{font-family:JetBrains Mono,ui-monospace,monospace!important;font-size:10.5px!important;color:#5d6478!important;letter-spacing:.08em!important;text-transform:uppercase!important}html.dark.book-page .VPDocAsideOutline .outline-link{color:#6b7080!important;border-left-color:#1f2430!important;font-size:12.5px!important}html.dark.book-page .VPDocAsideOutline .outline-link:hover{color:#ecedf0!important}html.dark.book-page .VPDocAsideOutline .outline-link.active{color:#c4f857!important;border-left-color:#c4f857!important;font-weight:500!important}html.dark.book-page .vp-doc h1{color:#ecedf0!important;font-weight:800!important;letter-spacing:-.025em!important}html.dark.book-page .vp-doc h2{color:#ecedf0!important;font-weight:700!important;letter-spacing:-.015em!important;border-left:none!important;padding-left:0!important;display:flex!important;align-items:baseline!important;gap:14px!important}html.dark.book-page .vp-doc h2:before{content:"§"!important;display:inline-block!important;color:#c4f857!important;font-family:JetBrains Mono,ui-monospace,monospace!important;font-weight:500!important;font-size:.85em!important;flex-shrink:0!important}html.dark.book-page .vp-doc h2:after{display:none!important}html.dark.book-page .vp-doc h3{color:#ecedf0!important;font-weight:600!important;border-left:none!important;padding-left:0!important}html.dark.book-page .vp-doc h3:before{display:none!important}html.dark.book-page .vp-doc h4{color:#c8ccd4!important}html.dark.book-page .vp-doc p{color:#c8ccd4!important;opacity:1!important;line-height:1.78!important}html.dark.book-page .vp-doc p strong,html.dark.book-page .vp-doc li strong{color:#ecedf0!important;font-weight:600!important}html.dark.book-page .vp-doc li{color:#c8ccd4!important;opacity:1!important}html.dark.book-page .vp-doc li::marker{color:#c4f857!important}html.dark.book-page .vp-doc ol>li::marker{color:#c4f857!important;font-weight:700!important}html.dark.book-page .vp-doc :not(pre)>code{background:#141722!important;color:#c4f857!important;border:1px solid #1f2430!important;font-family:JetBrains Mono,ui-monospace,monospace!important}html.dark.book-page .vp-doc a :not(pre)>code,html.dark.book-page .vp-doc :not(pre)>a>code{color:#c4f857!important}html.dark.book-page .vp-doc div[class*=language-]{background:#0c0d13!important;border:1px solid #1f2430!important;border-radius:10px!important}html.dark.book-page .vp-doc div[class*=language-] pre{background:#0c0d13!important;font-family:JetBrains Mono,ui-monospace,monospace!important}html.dark.book-page .vp-doc div[class*=language-]:before{background:#141722!important;border-color:#1f2430!important;color:#5d6478!important;font-family:JetBrains Mono,ui-monospace,monospace!important}html.dark.book-page .vp-doc div[class*=language-]:after{display:none!important}html.dark.book-page .vp-doc div[class*=language-] span.lang{color:#5d6478!important}html.dark.book-page .vp-doc blockquote{background:linear-gradient(90deg,rgba(196,248,87,.05),transparent)!important;border:none!important;border-left:2px solid #c4f857!important;border-radius:0 10px 10px 0!important;padding:16px 18px 16px 60px!important;color:#c8ccd4!important}html.dark.book-page .vp-doc blockquote:before{content:"NOTE"!important;position:absolute!important;top:17px!important;left:14px!important;width:auto!important;height:auto!important;background:none!important;background-image:none!important;border-radius:0!important;font-family:JetBrains Mono,ui-monospace,monospace!important;font-size:11px!important;font-weight:700!important;letter-spacing:.06em!important;color:#c4f857!important;display:block!important;opacity:1!important}html.dark.book-page .vp-doc blockquote p{color:#c8ccd4!important;font-size:14.5px!important;line-height:1.65!important}html.dark.book-page .vp-doc blockquote p strong{color:#ecedf0!important}html.dark.book-page .vp-doc blockquote :not(pre)>code{background:#c4f85714!important}html.dark.book-page .vp-doc table{border-color:#1f2430!important}html.dark.book-page .vp-doc th{background:#c4f8570f!important;color:#ecedf0!important;border-color:#1f2430!important}html.dark.book-page .vp-doc td{border-top-color:#1f2430!important;color:#c8ccd4!important}html.dark.book-page .vp-doc td:first-child{color:#ecedf0!important}html.dark.book-page .vp-doc tbody tr:nth-child(2n) td{background:#c4f85706!important}html.dark.book-page .vp-doc tr:hover td{background:#141722!important}html.dark.book-page .vp-doc a{color:#c4f857!important;text-decoration-color:#c4f85759!important}html.dark.book-page .vp-doc a:hover{text-decoration-color:#c4f857d9!important}html.dark.book-page .pager-link{background:#0e1016!important;border-color:#1f2430!important}html.dark.book-page .pager-link:hover{border-color:#c4f857!important;background:#c4f8570a!important;box-shadow:none!important}html.dark.book-page .pager-link .desc{color:#5d6478!important}html.dark.book-page .pager-link .title{color:#ecedf0!important}html.dark.book-page .vp-doc .chapter-cover-label{background:linear-gradient(90deg,#c4f857,#9ad43e)!important;-webkit-background-clip:text!important;background-clip:text!important;color:transparent!important}html.dark.book-page .vp-doc h1:target,html.dark.book-page .vp-doc h2:target,html.dark.book-page .vp-doc h3:target,html.dark.book-page .vp-doc h4:target{animation:anchor-highlight-v1 2s ease}@keyframes anchor-highlight-v1{0%{background:#c4f8571f;border-radius:4px}to{background:transparent}}html.dark.book-page .VPNav .VPNavBar{background:#0a0b0fd1!important;border-bottom:1px solid #1f2430!important}html.dark.book-page .vp-doc .chapter-ref-auto{text-decoration-color:#c4f85766!important}html.dark.book-page .vp-doc .chapter-ref-auto:hover{color:#c4f857!important;text-decoration-color:#c4f857!important}html.dark.book-page .sticky-section .ss-num{background:#c4f8571f!important;color:#c4f857!important;font-family:JetBrains Mono,ui-monospace,monospace!important}html.dark.book-page .sticky-section .ss-icon{color:#c4f857!important}@media(max-width:959px){html.dark.book-page .VPSidebar{background:#0c0d13!important}}html.dark #aliyunCaptcha-window-popup,html.dark .sm-pop-container,html.dark [id^=aliyunCaptcha],html.dark #aliyunCaptcha-window-popup img,html.dark [id^=aliyunCaptcha] img{filter:invert(.92) hue-rotate(180deg)}*{box-sizing:border-box}html,body{margin:0;padding:0;background:var(--vp-c-bg, #ffffff);color:var(--vp-c-text-1, #0f172a);font-family:-apple-system,BlinkMacSystemFont,PingFang SC,Hiragino Sans GB,Microsoft YaHei,system-ui,sans-serif;font-size:16px;line-height:1.7;transition:background-color .22s ease,color .22s ease}body *{transition-property:background-color,border-color,color,fill,stroke;transition-duration:.22s;transition-timing-function:ease}.bp-bookcard,.bp-tab,.bp-search,.route-progress,[class*=shimmer],.sk-line,.bp-skel-cover,.anum{transition-property:none}a{color:var(--vp-c-brand-1, #4f46e5);text-decoration:none}a:hover{color:var(--vp-c-brand-2, #4338ca)}.VPNav{position:sticky;top:0;z-index:100;background:var(--vp-c-bg, #fff);border-bottom:1px solid var(--vp-c-divider, #e2e8f0)}.VPNav-inner{display:flex;align-items:center;max-width:1440px;margin:0 auto;padding:12px 24px;gap:24px}.VPNav-logo{flex-shrink:0;font-size:16px;font-weight:700;color:var(--vp-c-text-1, #0f172a)}.VPNav-logo:hover{color:var(--vp-c-text-1, #0f172a)}.VPNav-menu{display:flex;gap:24px;flex:1;min-width:0}.VPNav-link{font-size:14px;font-weight:500;color:var(--vp-c-text-2, #475569);white-space:nowrap}.VPNav-link:hover{color:var(--vp-c-text-1, #0f172a)}.VPNav-actions{display:flex;align-items:center;gap:12px}.VPNav-search{display:inline-flex;align-items:center;gap:6px;padding:6px 12px;border:1px solid var(--vp-c-divider, #e2e8f0);border-radius:6px;background:var(--vp-c-bg-soft, #f8fafc);color:var(--vp-c-text-3, #94a3b8);font-size:13px;cursor:pointer;transition:border-color .15s}.VPNav-search:hover{border-color:var(--vp-c-brand-1, #4f46e5)}.VPNav-search-icon{font-size:12px}.VPNav-search-label{font-weight:500}.VPNav-menuToggle{display:none;background:none;border:1px solid var(--vp-c-divider, #cbd5e1);padding:4px 10px;border-radius:4px;color:var(--vp-c-text-2, #475569);font-size:13px;cursor:pointer}.VPLayout{display:grid;grid-template-columns:288px minmax(0,1fr) 248px;align-items:start;width:100%}.VPLayout-sidebar{position:sticky;top:64px;max-height:calc(100vh - 64px);overflow-y:auto;scrollbar-width:thin;scrollbar-color:transparent transparent}.VPLayout-sidebar::-webkit-scrollbar{width:6px}.VPLayout-sidebar::-webkit-scrollbar-track{background:transparent}.VPLayout-sidebar::-webkit-scrollbar-thumb{background:transparent;border-radius:3px}.VPLayout-sidebar:hover{scrollbar-color:var(--vp-c-divider, #cbd5e1) transparent}.VPLayout-sidebar:hover::-webkit-scrollbar-thumb{background:var(--vp-c-divider, #cbd5e1)}.VPLayout-sidebar-inner{padding:24px 16px 24px 24px}.VPLayout .VPSidebar,.VPLayout .VPDocAside{background:transparent!important;border:none!important;box-shadow:none!important;padding:0!important}.VPLayout-content{min-width:0;display:flex;justify-content:center}.VPLayout-content-inner{width:100%;max-width:800px;padding:24px 32px 64px}.VPLayout-aside{position:sticky;top:64px;max-height:calc(100vh - 64px);overflow-y:auto;font-size:13px;scrollbar-width:none;-ms-overflow-style:none}.VPLayout-aside::-webkit-scrollbar{width:0;height:0;display:none}.VPLayout-aside-inner{padding:24px 24px 24px 20px}.VPSidebar{display:block}.VPSidebar-bookTitle{display:block;padding:0 0 12px;font-size:16px;font-weight:700;color:var(--vp-c-text-1, #0f172a);border-bottom:1px solid var(--vp-c-divider-light, #f1f5f9);margin-bottom:16px}.VPSidebar-bookTitle:hover{color:var(--vp-c-text-1, #0f172a)}.VPSidebar-group{margin-bottom:20px}.VPSidebar-groupTitle{font-size:13px;font-weight:700;color:var(--vp-c-text-1, #0f172a);padding:6px 0;letter-spacing:.02em}.VPSidebar-items{list-style:none;padding:0;margin:4px 0 0}.VPSidebar-item{margin:0}.VPSidebar-link{display:block;padding:6px 12px;margin-left:-12px;font-size:14px;line-height:1.5;color:var(--vp-c-text-2, #64748b);border-left:2px solid transparent;transition:color .15s,border-color .15s}.VPSidebar-link:hover{color:var(--vp-c-text-1, #0f172a)}.VPSidebar-link.active{color:var(--vp-c-brand-1, #4f46e5);border-left-color:var(--vp-c-brand-1, #4f46e5);font-weight:600}.VPDocAside{display:block}.VPDocAside-title{font-size:13px;font-weight:700;color:var(--vp-c-text-1, #0f172a);letter-spacing:.02em;padding-bottom:8px;border-bottom:1px solid var(--vp-c-divider-light, #f1f5f9)}.VPDocAside-toc{display:flex;flex-direction:column;gap:6px;padding:12px 0 0;border-left:1px solid var(--vp-c-divider-light, #f1f5f9)}.VPDocAside-toc .toc-link{display:block;padding:4px 12px;margin-left:-1px;border-left:2px solid transparent;font-size:13px;line-height:1.4;color:var(--vp-c-text-2, #64748b);transition:color .15s,border-color .15s;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.VPDocAside-toc .toc-link:hover{color:var(--vp-c-text-1, #0f172a)}.VPDocAside-toc .toc-link.active{color:var(--vp-c-brand-1, #4f46e5);border-left-color:var(--vp-c-brand-1, #4f46e5);font-weight:600}.VPDocAside-toc .toc-3{padding-left:28px;font-size:12px}.paid-banner{display:inline-block;background:#fef3c7;color:#92400e;padding:4px 10px;border-radius:4px;font-size:12px;margin-bottom:12px}.muted{color:var(--vp-c-text-3, #64748b)}.btn-primary{display:inline-block;background:var(--vp-c-brand-1, #4f46e5);color:#fff;padding:8px 16px;border-radius:6px;font-weight:500;font-size:14px}.btn-primary:hover{background:var(--vp-c-brand-2, #4338ca);color:#fff}.cta{padding:40px 0;text-align:center}.cta h1{margin-bottom:12px}.reading-progress{position:fixed;top:0;left:0;height:2px;background:linear-gradient(90deg,var(--vp-c-brand-1, #6366f1),#ec4899);z-index:1000;transition:width 80ms linear;pointer-events:none}@media(max-width:1280px){.VPLayout{grid-template-columns:288px minmax(0,1fr)}.VPLayout-aside{display:none}.VPLayout-content-inner{padding:24px 32px 64px}}@media(max-width:960px){.VPLayout{grid-template-columns:1fr}.VPLayout-sidebar{position:fixed;inset:64px 0 0;z-index:50;display:none;background:var(--vp-c-bg, #fff);max-height:none;border-right:none}.VPLayout-sidebar.open{display:block;overflow-y:auto}.VPLayout-content-inner{padding:16px 20px 40px}.VPNav-menu{display:none}.VPNav-menuToggle{display:inline-block}.VPNav-search-label{display:none}}.vp-doc{font-size:16px}.vp-doc h1{font-size:28px;margin:32px 0 16px;line-height:1.3}.vp-doc h2{font-size:22px;margin:32px 0 12px;padding-top:8px;border-top:1px solid #e2e8f0}.vp-doc h3{font-size:18px;margin:24px 0 8px}.vp-doc p{margin:12px 0}.vp-doc ul,.vp-doc ol{padding-left:1.4em;margin:12px 0}.vp-doc blockquote{border-left:4px solid #94a3b8;padding:4px 16px;color:#475569;background:#f8fafc;margin:16px 0}.vp-doc table{border-collapse:collapse;margin:16px 0}.vp-doc th,.vp-doc td{border:1px solid #e2e8f0;padding:6px 12px}.vp-doc th{background:#f1f5f9}.vp-doc code:not(pre code){background:#f1f5f9;padding:2px 6px;border-radius:4px;font-size:.9em;color:#be185d;font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace}.vp-doc pre.shiki,.vp-doc pre.astro-code{background:#1e1e2e!important;color:#f8f8f2;padding:16px;border-radius:8px;overflow-x:auto;margin:16px 0;font-size:14px;line-height:1.6}.vp-doc pre.shiki code,.vp-doc pre.astro-code code{background:transparent;color:inherit;padding:0;font-size:inherit}.vp-doc pre.mermaid,.vp-doc div.mermaid{background:#fff!important;color:#0f172a;text-align:center;visibility:hidden;min-height:80px;position:relative;cursor:zoom-in}.vp-doc pre.mermaid[data-processed=true],.vp-doc div.mermaid[data-processed=true]{visibility:visible}.vp-doc pre.mermaid svg,.vp-doc div.mermaid svg{visibility:visible}.vp-doc pre .copy-btn{position:absolute;top:8px;right:8px;background:#ffffff14;color:#cbd5e1;border:1px solid rgba(255,255,255,.12);border-radius:4px;padding:4px 10px;font-size:12px;cursor:pointer;opacity:0;transition:opacity .15s,background .15s}.vp-doc pre:hover .copy-btn{opacity:1}.vp-doc pre .copy-btn:hover{background:#ffffff29}.vp-doc .custom-block{margin:16px 0;padding:16px 16px 16px 18px;border-left:4px solid #94a3b8;border-radius:6px;background:#f8fafc;color:#1e293b}.vp-doc .custom-block .custom-block-title{margin:0 0 8px;font-weight:700;font-size:14px;letter-spacing:.04em;text-transform:uppercase}.vp-doc .custom-block.tip{border-color:#6366f1;background:#eef2ff}.vp-doc .custom-block.tip .custom-block-title{color:#4338ca}.vp-doc .custom-block.info{border-color:#0ea5e9;background:#f0f9ff}.vp-doc .custom-block.info .custom-block-title{color:#0369a1}.vp-doc .custom-block.warning{border-color:#f59e0b;background:#fffbeb}.vp-doc .custom-block.warning .custom-block-title{color:#92400e}.vp-doc .custom-block.danger,.vp-doc .custom-block.caution{border-color:#ef4444;background:#fef2f2}.vp-doc .custom-block.danger .custom-block-title,.vp-doc .custom-block.caution .custom-block-title{color:#991b1b}.vp-doc .custom-block.note{border-color:#94a3b8;background:#f8fafc}.vp-doc .custom-block.note .custom-block-title{color:#475569}.vp-doc .custom-block.details{border-color:#cbd5e1;background:#f1f5f9}.vp-doc .custom-block p:last-child{margin-bottom:0}.img-lightbox{position:fixed;inset:0;display:none;background:#000000d9;z-index:999;justify-content:center;align-items:center;padding:32px;cursor:zoom-out}.img-lightbox.open{display:flex}.img-lightbox img{max-width:96vw;max-height:92vh;box-shadow:0 20px 60px #00000080}@font-face{font-display:block;font-family:KaTeX_AMS;font-style:normal;font-weight:400;src:url(/assets/KaTeX_AMS-Regular-BQhdFMY1.woff2) format("woff2"),url(/assets/KaTeX_AMS-Regular-DMm9YOAa.woff) format("woff"),url(/assets/KaTeX_AMS-Regular-DRggAlZN.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Caligraphic;font-style:normal;font-weight:700;src:url(/assets/KaTeX_Caligraphic-Bold-Dq_IR9rO.woff2) format("woff2"),url(/assets/KaTeX_Caligraphic-Bold-BEiXGLvX.woff) format("woff"),url(/assets/KaTeX_Caligraphic-Bold-ATXxdsX0.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Caligraphic;font-style:normal;font-weight:400;src:url(/assets/KaTeX_Caligraphic-Regular-Di6jR-x-.woff2) format("woff2"),url(/assets/KaTeX_Caligraphic-Regular-CTRA-rTL.woff) format("woff"),url(/assets/KaTeX_Caligraphic-Regular-wX97UBjC.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Fraktur;font-style:normal;font-weight:700;src:url(/assets/KaTeX_Fraktur-Bold-CL6g_b3V.woff2) format("woff2"),url(/assets/KaTeX_Fraktur-Bold-BsDP51OF.woff) format("woff"),url(/assets/KaTeX_Fraktur-Bold-BdnERNNW.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Fraktur;font-style:normal;font-weight:400;src:url(/assets/KaTeX_Fraktur-Regular-CTYiF6lA.woff2) format("woff2"),url(/assets/KaTeX_Fraktur-Regular-Dxdc4cR9.woff) format("woff"),url(/assets/KaTeX_Fraktur-Regular-CB_wures.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Main;font-style:normal;font-weight:700;src:url(/assets/KaTeX_Main-Bold-Cx986IdX.woff2) format("woff2"),url(/assets/KaTeX_Main-Bold-Jm3AIy58.woff) format("woff"),url(/assets/KaTeX_Main-Bold-waoOVXN0.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Main;font-style:italic;font-weight:700;src:url(/assets/KaTeX_Main-BoldItalic-DxDJ3AOS.woff2) format("woff2"),url(/assets/KaTeX_Main-BoldItalic-SpSLRI95.woff) format("woff"),url(/assets/KaTeX_Main-BoldItalic-DzxPMmG6.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Main;font-style:italic;font-weight:400;src:url(/assets/KaTeX_Main-Italic-NWA7e6Wa.woff2) format("woff2"),url(/assets/KaTeX_Main-Italic-BMLOBm91.woff) format("woff"),url(/assets/KaTeX_Main-Italic-3WenGoN9.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Main;font-style:normal;font-weight:400;src:url(/assets/KaTeX_Main-Regular-B22Nviop.woff2) format("woff2"),url(/assets/KaTeX_Main-Regular-Dr94JaBh.woff) format("woff"),url(/assets/KaTeX_Main-Regular-ypZvNtVU.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Math;font-style:italic;font-weight:700;src:url(/assets/KaTeX_Math-BoldItalic-CZnvNsCZ.woff2) format("woff2"),url(/assets/KaTeX_Math-BoldItalic-iY-2wyZ7.woff) format("woff"),url(/assets/KaTeX_Math-BoldItalic-B3XSjfu4.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Math;font-style:italic;font-weight:400;src:url(/assets/KaTeX_Math-Italic-t53AETM-.woff2) format("woff2"),url(/assets/KaTeX_Math-Italic-DA0__PXp.woff) format("woff"),url(/assets/KaTeX_Math-Italic-flOr_0UB.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_SansSerif;font-style:normal;font-weight:700;src:url(/assets/KaTeX_SansSerif-Bold-D1sUS0GD.woff2) format("woff2"),url(/assets/KaTeX_SansSerif-Bold-DbIhKOiC.woff) format("woff"),url(/assets/KaTeX_SansSerif-Bold-CFMepnvq.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_SansSerif;font-style:italic;font-weight:400;src:url(/assets/KaTeX_SansSerif-Italic-C3H0VqGB.woff2) format("woff2"),url(/assets/KaTeX_SansSerif-Italic-DN2j7dab.woff) format("woff"),url(/assets/KaTeX_SansSerif-Italic-YYjJ1zSn.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_SansSerif;font-style:normal;font-weight:400;src:url(/assets/KaTeX_SansSerif-Regular-DDBCnlJ7.woff2) format("woff2"),url(/assets/KaTeX_SansSerif-Regular-CS6fqUqJ.woff) format("woff"),url(/assets/KaTeX_SansSerif-Regular-BNo7hRIc.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Script;font-style:normal;font-weight:400;src:url(/assets/KaTeX_Script-Regular-D3wIWfF6.woff2) format("woff2"),url(/assets/KaTeX_Script-Regular-D5yQViql.woff) format("woff"),url(/assets/KaTeX_Script-Regular-C5JkGWo-.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Size1;font-style:normal;font-weight:400;src:url(/assets/KaTeX_Size1-Regular-mCD8mA8B.woff2) format("woff2"),url(/assets/KaTeX_Size1-Regular-C195tn64.woff) format("woff"),url(/assets/KaTeX_Size1-Regular-Dbsnue_I.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Size2;font-style:normal;font-weight:400;src:url(/assets/KaTeX_Size2-Regular-Dy4dx90m.woff2) format("woff2"),url(/assets/KaTeX_Size2-Regular-oD1tc_U0.woff) format("woff"),url(/assets/KaTeX_Size2-Regular-B7gKUWhC.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Size3;font-style:normal;font-weight:400;src:url(data:font/woff2;base64,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) format("woff2"),url(/assets/KaTeX_Size3-Regular-CTq5MqoE.woff) format("woff"),url(/assets/KaTeX_Size3-Regular-DgpXs0kz.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Size4;font-style:normal;font-weight:400;src:url(/assets/KaTeX_Size4-Regular-Dl5lxZxV.woff2) format("woff2"),url(/assets/KaTeX_Size4-Regular-BF-4gkZK.woff) format("woff"),url(/assets/KaTeX_Size4-Regular-DWFBv043.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Typewriter;font-style:normal;font-weight:400;src:url(/assets/KaTeX_Typewriter-Regular-CO6r4hn1.woff2) format("woff2"),url(/assets/KaTeX_Typewriter-Regular-C0xS9mPB.woff) format("woff"),url(/assets/KaTeX_Typewriter-Regular-D3Ib7_Hf.ttf) format("truetype")}.katex{font: 1.21em KaTeX_Main,Times New Roman,serif;line-height:1.2;position:relative;text-indent:0;text-rendering:auto}.katex *{-ms-high-contrast-adjust:none!important;border-color:currentColor}.katex .katex-version:after{content:"0.16.45"}.katex .katex-mathml{clip:rect(1px,1px,1px,1px);border:0;height:1px;overflow:hidden;padding:0;position:absolute;width:1px}.katex .katex-html>.newline{display:block}.katex .base{position:relative;white-space:nowrap;width:-webkit-min-content;width:-moz-min-content;width:min-content}.katex .base,.katex .strut{display:inline-block}.katex .textbf{font-weight:700}.katex .textit{font-style:italic}.katex .textrm{font-family:KaTeX_Main}.katex .textsf{font-family:KaTeX_SansSerif}.katex .texttt{font-family:KaTeX_Typewriter}.katex .mathnormal{font-family:KaTeX_Math;font-style:italic}.katex .mathit{font-family:KaTeX_Main;font-style:italic}.katex .mathrm{font-style:normal}.katex .mathbf{font-family:KaTeX_Main;font-weight:700}.katex .boldsymbol{font-family:KaTeX_Math;font-style:italic;font-weight:700}.katex .amsrm,.katex .mathbb,.katex .textbb{font-family:KaTeX_AMS}.katex .mathcal{font-family:KaTeX_Caligraphic}.katex .mathfrak,.katex .textfrak{font-family:KaTeX_Fraktur}.katex .mathboldfrak,.katex .textboldfrak{font-family:KaTeX_Fraktur;font-weight:700}.katex .mathtt{font-family:KaTeX_Typewriter}.katex .mathscr,.katex .textscr{font-family:KaTeX_Script}.katex .mathsf,.katex .textsf{font-family:KaTeX_SansSerif}.katex .mathboldsf,.katex .textboldsf{font-family:KaTeX_SansSerif;font-weight:700}.katex .mathitsf,.katex .mathsfit,.katex .textitsf{font-family:KaTeX_SansSerif;font-style:italic}.katex .mainrm{font-family:KaTeX_Main;font-style:normal}.katex .vlist-t{border-collapse:collapse;display:inline-table;table-layout:fixed}.katex .vlist-r{display:table-row}.katex .vlist{display:table-cell;position:relative;vertical-align:bottom}.katex .vlist>span{display:block;height:0;position:relative}.katex .vlist>span>span{display:inline-block}.katex .vlist>span>.pstrut{overflow:hidden;width:0}.katex .vlist-t2{margin-right:-2px}.katex .vlist-s{display:table-cell;font-size:1px;min-width:2px;vertical-align:bottom;width:2px}.katex .vbox{align-items:baseline;display:inline-flex;flex-direction:column}.katex .hbox{width:100%}.katex .hbox,.katex .thinbox{display:inline-flex;flex-direction:row}.katex .thinbox{max-width:0;width:0}.katex .msupsub{text-align:left}.katex .mfrac>span>span{text-align:center}.katex .mfrac .frac-line{border-bottom-style:solid;display:inline-block;width:100%}.katex .hdashline,.katex .hline,.katex .mfrac .frac-line,.katex .overline .overline-line,.katex .rule,.katex .underline .underline-line{min-height:1px}.katex .mspace{display:inline-block}.katex .smash{display:inline;line-height:0}.katex .clap,.katex .llap,.katex .rlap{position:relative;width:0}.katex .clap>.inner,.katex .llap>.inner,.katex .rlap>.inner{position:absolute}.katex .clap>.fix,.katex .llap>.fix,.katex .rlap>.fix{display:inline-block}.katex .llap>.inner{right:0}.katex .clap>.inner,.katex .rlap>.inner{left:0}.katex .clap>.inner>span{margin-left:-50%;margin-right:50%}.katex .rule{border:0 solid;display:inline-block;position:relative}.katex .hline,.katex .overline .overline-line,.katex .underline .underline-line{border-bottom-style:solid;display:inline-block;width:100%}.katex .hdashline{border-bottom-style:dashed;display:inline-block;width:100%}.katex .sqrt>.root{margin-left:.2777777778em;margin-right:-.5555555556em}.katex .fontsize-ensurer.reset-size1.size1,.katex .sizing.reset-size1.size1{font-size:1em}.katex .fontsize-ensurer.reset-size1.size2,.katex .sizing.reset-size1.size2{font-size:1.2em}.katex .fontsize-ensurer.reset-size1.size3,.katex .sizing.reset-size1.size3{font-size:1.4em}.katex .fontsize-ensurer.reset-size1.size4,.katex .sizing.reset-size1.size4{font-size:1.6em}.katex .fontsize-ensurer.reset-size1.size5,.katex .sizing.reset-size1.size5{font-size:1.8em}.katex .fontsize-ensurer.reset-size1.size6,.katex .sizing.reset-size1.size6{font-size:2em}.katex .fontsize-ensurer.reset-size1.size7,.katex .sizing.reset-size1.size7{font-size:2.4em}.katex .fontsize-ensurer.reset-size1.size8,.katex .sizing.reset-size1.size8{font-size:2.88em}.katex .fontsize-ensurer.reset-size1.size9,.katex .sizing.reset-size1.size9{font-size:3.456em}.katex .fontsize-ensurer.reset-size1.size10,.katex .sizing.reset-size1.size10{font-size:4.148em}.katex .fontsize-ensurer.reset-size1.size11,.katex .sizing.reset-size1.size11{font-size:4.976em}.katex .fontsize-ensurer.reset-size2.size1,.katex .sizing.reset-size2.size1{font-size:.8333333333em}.katex .fontsize-ensurer.reset-size2.size2,.katex .sizing.reset-size2.size2{font-size:1em}.katex .fontsize-ensurer.reset-size2.size3,.katex .sizing.reset-size2.size3{font-size:1.1666666667em}.katex .fontsize-ensurer.reset-size2.size4,.katex .sizing.reset-size2.size4{font-size:1.3333333333em}.katex .fontsize-ensurer.reset-size2.size5,.katex .sizing.reset-size2.size5{font-size:1.5em}.katex .fontsize-ensurer.reset-size2.size6,.katex .sizing.reset-size2.size6{font-size:1.6666666667em}.katex .fontsize-ensurer.reset-size2.size7,.katex .sizing.reset-size2.size7{font-size:2em}.katex .fontsize-ensurer.reset-size2.size8,.katex .sizing.reset-size2.size8{font-size:2.4em}.katex .fontsize-ensurer.reset-size2.size9,.katex .sizing.reset-size2.size9{font-size:2.88em}.katex .fontsize-ensurer.reset-size2.size10,.katex .sizing.reset-size2.size10{font-size:3.4566666667em}.katex .fontsize-ensurer.reset-size2.size11,.katex .sizing.reset-size2.size11{font-size:4.1466666667em}.katex .fontsize-ensurer.reset-size3.size1,.katex .sizing.reset-size3.size1{font-size:.7142857143em}.katex .fontsize-ensurer.reset-size3.size2,.katex .sizing.reset-size3.size2{font-size:.8571428571em}.katex .fontsize-ensurer.reset-size3.size3,.katex .sizing.reset-size3.size3{font-size:1em}.katex .fontsize-ensurer.reset-size3.size4,.katex .sizing.reset-size3.size4{font-size:1.1428571429em}.katex .fontsize-ensurer.reset-size3.size5,.katex .sizing.reset-size3.size5{font-size:1.2857142857em}.katex .fontsize-ensurer.reset-size3.size6,.katex .sizing.reset-size3.size6{font-size:1.4285714286em}.katex .fontsize-ensurer.reset-size3.size7,.katex .sizing.reset-size3.size7{font-size:1.7142857143em}.katex .fontsize-ensurer.reset-size3.size8,.katex .sizing.reset-size3.size8{font-size:2.0571428571em}.katex .fontsize-ensurer.reset-size3.size9,.katex .sizing.reset-size3.size9{font-size:2.4685714286em}.katex .fontsize-ensurer.reset-size3.size10,.katex .sizing.reset-size3.size10{font-size:2.9628571429em}.katex .fontsize-ensurer.reset-size3.size11,.katex .sizing.reset-size3.size11{font-size:3.5542857143em}.katex .fontsize-ensurer.reset-size4.size1,.katex .sizing.reset-size4.size1{font-size:.625em}.katex .fontsize-ensurer.reset-size4.size2,.katex .sizing.reset-size4.size2{font-size:.75em}.katex .fontsize-ensurer.reset-size4.size3,.katex .sizing.reset-size4.size3{font-size:.875em}.katex .fontsize-ensurer.reset-size4.size4,.katex .sizing.reset-size4.size4{font-size:1em}.katex .fontsize-ensurer.reset-size4.size5,.katex .sizing.reset-size4.size5{font-size:1.125em}.katex .fontsize-ensurer.reset-size4.size6,.katex .sizing.reset-size4.size6{font-size:1.25em}.katex .fontsize-ensurer.reset-size4.size7,.katex .sizing.reset-size4.size7{font-size:1.5em}.katex .fontsize-ensurer.reset-size4.size8,.katex .sizing.reset-size4.size8{font-size:1.8em}.katex .fontsize-ensurer.reset-size4.size9,.katex .sizing.reset-size4.size9{font-size:2.16em}.katex .fontsize-ensurer.reset-size4.size10,.katex .sizing.reset-size4.size10{font-size:2.5925em}.katex .fontsize-ensurer.reset-size4.size11,.katex .sizing.reset-size4.size11{font-size:3.11em}.katex .fontsize-ensurer.reset-size5.size1,.katex .sizing.reset-size5.size1{font-size:.5555555556em}.katex .fontsize-ensurer.reset-size5.size2,.katex .sizing.reset-size5.size2{font-size:.6666666667em}.katex .fontsize-ensurer.reset-size5.size3,.katex .sizing.reset-size5.size3{font-size:.7777777778em}.katex .fontsize-ensurer.reset-size5.size4,.katex .sizing.reset-size5.size4{font-size:.8888888889em}.katex .fontsize-ensurer.reset-size5.size5,.katex .sizing.reset-size5.size5{font-size:1em}.katex .fontsize-ensurer.reset-size5.size6,.katex .sizing.reset-size5.size6{font-size:1.1111111111em}.katex .fontsize-ensurer.reset-size5.size7,.katex .sizing.reset-size5.size7{font-size:1.3333333333em}.katex .fontsize-ensurer.reset-size5.size8,.katex .sizing.reset-size5.size8{font-size:1.6em}.katex .fontsize-ensurer.reset-size5.size9,.katex .sizing.reset-size5.size9{font-size:1.92em}.katex .fontsize-ensurer.reset-size5.size10,.katex .sizing.reset-size5.size10{font-size:2.3044444444em}.katex .fontsize-ensurer.reset-size5.size11,.katex .sizing.reset-size5.size11{font-size:2.7644444444em}.katex .fontsize-ensurer.reset-size6.size1,.katex .sizing.reset-size6.size1{font-size:.5em}.katex .fontsize-ensurer.reset-size6.size2,.katex .sizing.reset-size6.size2{font-size:.6em}.katex .fontsize-ensurer.reset-size6.size3,.katex .sizing.reset-size6.size3{font-size:.7em}.katex .fontsize-ensurer.reset-size6.size4,.katex .sizing.reset-size6.size4{font-size:.8em}.katex .fontsize-ensurer.reset-size6.size5,.katex .sizing.reset-size6.size5{font-size:.9em}.katex .fontsize-ensurer.reset-size6.size6,.katex .sizing.reset-size6.size6{font-size:1em}.katex .fontsize-ensurer.reset-size6.size7,.katex .sizing.reset-size6.size7{font-size:1.2em}.katex .fontsize-ensurer.reset-size6.size8,.katex .sizing.reset-size6.size8{font-size:1.44em}.katex .fontsize-ensurer.reset-size6.size9,.katex .sizing.reset-size6.size9{font-size:1.728em}.katex .fontsize-ensurer.reset-size6.size10,.katex .sizing.reset-size6.size10{font-size:2.074em}.katex .fontsize-ensurer.reset-size6.size11,.katex .sizing.reset-size6.size11{font-size:2.488em}.katex .fontsize-ensurer.reset-size7.size1,.katex .sizing.reset-size7.size1{font-size:.4166666667em}.katex .fontsize-ensurer.reset-size7.size2,.katex .sizing.reset-size7.size2{font-size:.5em}.katex .fontsize-ensurer.reset-size7.size3,.katex .sizing.reset-size7.size3{font-size:.5833333333em}.katex .fontsize-ensurer.reset-size7.size4,.katex .sizing.reset-size7.size4{font-size:.6666666667em}.katex .fontsize-ensurer.reset-size7.size5,.katex .sizing.reset-size7.size5{font-size:.75em}.katex .fontsize-ensurer.reset-size7.size6,.katex .sizing.reset-size7.size6{font-size:.8333333333em}.katex .fontsize-ensurer.reset-size7.size7,.katex .sizing.reset-size7.size7{font-size:1em}.katex .fontsize-ensurer.reset-size7.size8,.katex .sizing.reset-size7.size8{font-size:1.2em}.katex .fontsize-ensurer.reset-size7.size9,.katex .sizing.reset-size7.size9{font-size:1.44em}.katex .fontsize-ensurer.reset-size7.size10,.katex .sizing.reset-size7.size10{font-size:1.7283333333em}.katex .fontsize-ensurer.reset-size7.size11,.katex .sizing.reset-size7.size11{font-size:2.0733333333em}.katex .fontsize-ensurer.reset-size8.size1,.katex .sizing.reset-size8.size1{font-size:.3472222222em}.katex .fontsize-ensurer.reset-size8.size2,.katex .sizing.reset-size8.size2{font-size:.4166666667em}.katex .fontsize-ensurer.reset-size8.size3,.katex .sizing.reset-size8.size3{font-size:.4861111111em}.katex .fontsize-ensurer.reset-size8.size4,.katex .sizing.reset-size8.size4{font-size:.5555555556em}.katex .fontsize-ensurer.reset-size8.size5,.katex .sizing.reset-size8.size5{font-size:.625em}.katex .fontsize-ensurer.reset-size8.size6,.katex .sizing.reset-size8.size6{font-size:.6944444444em}.katex .fontsize-ensurer.reset-size8.size7,.katex .sizing.reset-size8.size7{font-size:.8333333333em}.katex .fontsize-ensurer.reset-size8.size8,.katex .sizing.reset-size8.size8{font-size:1em}.katex .fontsize-ensurer.reset-size8.size9,.katex .sizing.reset-size8.size9{font-size:1.2em}.katex .fontsize-ensurer.reset-size8.size10,.katex .sizing.reset-size8.size10{font-size:1.4402777778em}.katex .fontsize-ensurer.reset-size8.size11,.katex .sizing.reset-size8.size11{font-size:1.7277777778em}.katex .fontsize-ensurer.reset-size9.size1,.katex .sizing.reset-size9.size1{font-size:.2893518519em}.katex .fontsize-ensurer.reset-size9.size2,.katex .sizing.reset-size9.size2{font-size:.3472222222em}.katex .fontsize-ensurer.reset-size9.size3,.katex .sizing.reset-size9.size3{font-size:.4050925926em}.katex .fontsize-ensurer.reset-size9.size4,.katex .sizing.reset-size9.size4{font-size:.462962963em}.katex .fontsize-ensurer.reset-size9.size5,.katex .sizing.reset-size9.size5{font-size:.5208333333em}.katex .fontsize-ensurer.reset-size9.size6,.katex .sizing.reset-size9.size6{font-size:.5787037037em}.katex .fontsize-ensurer.reset-size9.size7,.katex .sizing.reset-size9.size7{font-size:.6944444444em}.katex .fontsize-ensurer.reset-size9.size8,.katex .sizing.reset-size9.size8{font-size:.8333333333em}.katex .fontsize-ensurer.reset-size9.size9,.katex .sizing.reset-size9.size9{font-size:1em}.katex .fontsize-ensurer.reset-size9.size10,.katex .sizing.reset-size9.size10{font-size:1.2002314815em}.katex .fontsize-ensurer.reset-size9.size11,.katex .sizing.reset-size9.size11{font-size:1.4398148148em}.katex .fontsize-ensurer.reset-size10.size1,.katex .sizing.reset-size10.size1{font-size:.2410800386em}.katex .fontsize-ensurer.reset-size10.size2,.katex .sizing.reset-size10.size2{font-size:.2892960463em}.katex .fontsize-ensurer.reset-size10.size3,.katex .sizing.reset-size10.size3{font-size:.337512054em}.katex .fontsize-ensurer.reset-size10.size4,.katex .sizing.reset-size10.size4{font-size:.3857280617em}.katex .fontsize-ensurer.reset-size10.size5,.katex .sizing.reset-size10.size5{font-size:.4339440694em}.katex .fontsize-ensurer.reset-size10.size6,.katex .sizing.reset-size10.size6{font-size:.4821600771em}.katex .fontsize-ensurer.reset-size10.size7,.katex .sizing.reset-size10.size7{font-size:.5785920926em}.katex .fontsize-ensurer.reset-size10.size8,.katex .sizing.reset-size10.size8{font-size:.6943105111em}.katex .fontsize-ensurer.reset-size10.size9,.katex .sizing.reset-size10.size9{font-size:.8331726133em}.katex .fontsize-ensurer.reset-size10.size10,.katex .sizing.reset-size10.size10{font-size:1em}.katex .fontsize-ensurer.reset-size10.size11,.katex .sizing.reset-size10.size11{font-size:1.1996142719em}.katex .fontsize-ensurer.reset-size11.size1,.katex .sizing.reset-size11.size1{font-size:.2009646302em}.katex .fontsize-ensurer.reset-size11.size2,.katex .sizing.reset-size11.size2{font-size:.2411575563em}.katex .fontsize-ensurer.reset-size11.size3,.katex .sizing.reset-size11.size3{font-size:.2813504823em}.katex .fontsize-ensurer.reset-size11.size4,.katex .sizing.reset-size11.size4{font-size:.3215434084em}.katex .fontsize-ensurer.reset-size11.size5,.katex .sizing.reset-size11.size5{font-size:.3617363344em}.katex .fontsize-ensurer.reset-size11.size6,.katex .sizing.reset-size11.size6{font-size:.4019292605em}.katex .fontsize-ensurer.reset-size11.size7,.katex .sizing.reset-size11.size7{font-size:.4823151125em}.katex .fontsize-ensurer.reset-size11.size8,.katex .sizing.reset-size11.size8{font-size:.578778135em}.katex .fontsize-ensurer.reset-size11.size9,.katex .sizing.reset-size11.size9{font-size:.6945337621em}.katex .fontsize-ensurer.reset-size11.size10,.katex .sizing.reset-size11.size10{font-size:.8336012862em}.katex .fontsize-ensurer.reset-size11.size11,.katex .sizing.reset-size11.size11{font-size:1em}.katex .delimsizing.size1{font-family:KaTeX_Size1}.katex .delimsizing.size2{font-family:KaTeX_Size2}.katex .delimsizing.size3{font-family:KaTeX_Size3}.katex .delimsizing.size4{font-family:KaTeX_Size4}.katex .delimsizing.mult .delim-size1>span{font-family:KaTeX_Size1}.katex .delimsizing.mult .delim-size4>span{font-family:KaTeX_Size4}.katex .nulldelimiter{display:inline-block;width:.12em}.katex .delimcenter,.katex .op-symbol{position:relative}.katex .op-symbol.small-op{font-family:KaTeX_Size1}.katex .op-symbol.large-op{font-family:KaTeX_Size2}.katex .accent>.vlist-t,.katex .op-limits>.vlist-t{text-align:center}.katex .accent .accent-body{position:relative}.katex .accent .accent-body:not(.accent-full){width:0}.katex .overlay{display:block}.katex .mtable .vertical-separator{display:inline-block;min-width:1px}.katex .mtable .arraycolsep{display:inline-block}.katex .mtable .col-align-c>.vlist-t{text-align:center}.katex .mtable .col-align-l>.vlist-t{text-align:left}.katex .mtable .col-align-r>.vlist-t{text-align:right}.katex .svg-align{text-align:left}.katex svg{fill:currentColor;stroke:currentColor;display:block;height:inherit;position:absolute;width:100%}.katex svg path{stroke:none}.katex svg{fill-rule:nonzero;fill-opacity:1;stroke-width:1;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:4;stroke-dasharray:none;stroke-dashoffset:0;stroke-opacity:1}.katex img{border-style:none;max-height:none;max-width:none;min-height:0;min-width:0}.katex .stretchy{display:block;overflow:hidden;position:relative;width:100%}.katex .stretchy:after,.katex .stretchy:before{content:""}.katex .hide-tail{overflow:hidden;position:relative;width:100%}.katex .halfarrow-left{left:0;overflow:hidden;position:absolute;width:50.2%}.katex .halfarrow-right{overflow:hidden;position:absolute;right:0;width:50.2%}.katex .brace-left{left:0;overflow:hidden;position:absolute;width:25.1%}.katex .brace-center{left:25%;overflow:hidden;position:absolute;width:50%}.katex .brace-right{overflow:hidden;position:absolute;right:0;width:25.1%}.katex .x-arrow-pad{padding:0 .5em}.katex .cd-arrow-pad{padding:0 .55556em 0 .27778em}.katex .mover,.katex .munder,.katex .x-arrow{text-align:center}.katex .boxpad{padding:0 .3em}.katex .fbox,.katex .fcolorbox{border:.04em solid;box-sizing:border-box}.katex .cancel-pad{padding:0 .2em}.katex .cancel-lap{margin-left:-.2em;margin-right:-.2em}.katex .sout{border-bottom-style:solid;border-bottom-width:.08em}.katex .angl{border-right:.049em solid;border-top:.049em solid;box-sizing:border-box;margin-right:.03889em}.katex .anglpad{padding:0 .03889em}.katex .eqn-num:before{content:"(" counter(katexEqnNo) ")";counter-increment:katexEqnNo}.katex .mml-eqn-num:before{content:"(" counter(mmlEqnNo) ")";counter-increment:mmlEqnNo}.katex .mtr-glue{width:50%}.katex .cd-vert-arrow{display:inline-block;position:relative}.katex .cd-label-left{display:inline-block;position:absolute;right:calc(50% + .3em);text-align:left}.katex .cd-label-right{display:inline-block;left:calc(50% + .3em);position:absolute;text-align:right}.katex-display{display:block;margin:1em 0;text-align:center}.katex-display>.katex{display:block;text-align:center;white-space:nowrap}.katex-display>.katex>.katex-html{display:block;position:relative}.katex-display>.katex>.katex-html>.tag{position:absolute;right:0}.katex-display.leqno>.katex>.katex-html>.tag{left:0;right:auto}.katex-display.fleqn>.katex{padding-left:2em;text-align:left}body{counter-reset:katexEqnNo mmlEqnNo}