:root{--paper: #F5F0E4;--paper-soft: #EEE7D5;--paper-deep: #E4D9BE;--paper-edge: #C7BBA0;--ink: #1F1A14;--ink-soft: #4A4339;--ink-mute: #877D6B;--ink-faint: #B8AC95;--accent: #7A1F1A;--accent-deep: #5C1714;--gold: #8B5A1E;--moss: #2D5238;--rule: #C9BEA8;--shadow-card: 0 1px 0 rgba(31, 26, 20, .05), 0 8px 24px -12px rgba(31, 26, 20, .18);--shadow-card-hover: 0 2px 0 rgba(31, 26, 20, .08), 0 18px 36px -16px rgba(31, 26, 20, .28);--shadow-volume: inset 0 -8px 16px -8px rgba(31, 26, 20, .12), 0 2px 0 rgba(31, 26, 20, .06);--font-serif-zh: "Noto Serif SC", Georgia, "Songti SC", serif;--font-serif-en: "Fraunces", "Source Serif 4", Georgia, serif;--font-body: "Source Serif 4", "Noto Serif SC", Georgia, serif;--font-mono: "JetBrains Mono", "SF Mono", Menlo, Consolas, monospace;--container-max: 1440px;--container-pad: 48px;--radius-sm: 4px;--radius-md: 8px}@media(max-width:768px){:root{--container-pad: 20px}}*,*:before,*:after{box-sizing:border-box}html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--font-body);font-size:16.5px;line-height:1.7;font-weight:400;font-feature-settings:"kern","liga","calt","onum";text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background-image:radial-gradient(circle at 30% 20%,rgba(139,90,30,.025) 0%,transparent 50%),radial-gradient(circle at 70% 80%,rgba(122,31,26,.02) 0%,transparent 50%),repeating-radial-gradient(rgba(31,26,20,.012) 1px,transparent 2px,transparent 3px)}a{color:var(--accent);text-decoration:none;text-underline-offset:3px;transition:color .15s ease}a:hover{color:var(--accent-deep);text-decoration:underline}::selection{background:var(--accent);color:var(--paper)}.container{max-width:var(--container-max);margin:0 auto;padding:0 var(--container-pad)}.serif-en{font-family:var(--font-serif-en)}.serif-zh{font-family:var(--font-serif-zh)}.mono{font-family:var(--font-mono)}h1,h2,h3,h4{font-family:var(--font-serif-en),var(--font-serif-zh);font-weight:500;letter-spacing:-.01em;color:var(--ink);margin:0}.hairline{height:1px;background:var(--rule);border:0;margin:0}.hairline-double{height:4px;border-top:1px solid var(--rule);border-bottom:1px solid var(--rule)}:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:2px}.astro-route-announcer{position:absolute;left:0;top:0;clip:rect(0 0 0 0);clip-path:inset(50%);overflow:hidden;white-space:nowrap;width:1px;height:1px}body.full-bleed{background:var(--paper-soft)}::view-transition-old(root),::view-transition-new(root){animation-duration:.2s;animation-timing-function:cubic-bezier(.32,.72,.32,1)}::view-transition-old(root){animation-name:csr-fade-out}::view-transition-new(root){animation-name:csr-fade-in-scale}@keyframes csr-fade-out{to{opacity:0}}@keyframes csr-fade-in-scale{0%{opacity:0;transform:scale(.985);transform-origin:center top}to{opacity:1;transform:scale(1);transform-origin:center top}}@media(prefers-reduced-motion:reduce){::view-transition-old(root),::view-transition-new(root){animation-duration:.12s}@keyframes csr-fade-in-scale{0%{opacity:0;transform:none}to{opacity:1;transform:none}}}.site-header[data-astro-cid-3ef6ksr2]{border-bottom:1px solid var(--rule);background:var(--paper)}.site-header--reader[data-astro-cid-3ef6ksr2]{position:fixed;top:0;left:0;right:0;z-index:100;transform:translateY(0);transition:transform .32s cubic-bezier(.2,.8,.2,1);background:#f5f0e4f5;backdrop-filter:blur(8px) saturate(1.1);-webkit-backdrop-filter:blur(8px) saturate(1.1)}.site-header--reader[data-astro-cid-3ef6ksr2].is-hidden{transform:translateY(-100%)}.header-inner[data-astro-cid-3ef6ksr2]{width:100%;display:flex;align-items:center;justify-content:space-between;height:56px;gap:24px;padding:0 32px}@media(max-width:640px){.header-inner[data-astro-cid-3ef6ksr2]{padding:0 16px}}.header-brand[data-astro-cid-3ef6ksr2]{display:inline-flex;align-items:center;gap:10px;color:var(--ink);text-decoration:none;font-weight:500;font-size:16px;letter-spacing:-.005em;flex-shrink:0}.header-brand[data-astro-cid-3ef6ksr2]:hover{color:var(--accent)}.brand-mark[data-astro-cid-3ef6ksr2]{width:25px;height:24px;display:block;flex-shrink:0;object-fit:contain}.brand-text[data-astro-cid-3ef6ksr2]{line-height:1;font-family:var(--font-serif-zh);font-weight:500}.header-right[data-astro-cid-3ef6ksr2]{display:flex;align-items:center}.menu-wrap[data-astro-cid-3ef6ksr2]{position:relative}.menu-btn[data-astro-cid-3ef6ksr2]{all:unset;cursor:pointer;display:inline-flex;align-items:center;gap:8px;padding:7px 10px;font-family:var(--font-serif-zh);font-size:14px;color:var(--ink-soft);border:1px solid transparent;border-radius:6px;transition:background .15s ease,color .15s ease,border-color .15s ease}.menu-btn[data-astro-cid-3ef6ksr2]:hover,.menu-open[data-astro-cid-3ef6ksr2] .menu-btn[data-astro-cid-3ef6ksr2]{background:var(--paper-deep);color:var(--ink);border-color:var(--rule)}.menu-label[data-astro-cid-3ef6ksr2]{line-height:1;font-weight:500}.menu-chev[data-astro-cid-3ef6ksr2]{color:var(--ink-mute);transition:transform .2s ease}.menu-open[data-astro-cid-3ef6ksr2] .menu-chev[data-astro-cid-3ef6ksr2]{transform:rotate(180deg);color:var(--accent)}.menu-panel[data-astro-cid-3ef6ksr2]{position:absolute;top:calc(100% + 8px);right:0;min-width:180px;background:var(--paper);border:1px solid var(--rule);border-radius:8px;padding:6px;box-shadow:0 12px 28px -16px #1f1a1452;opacity:0;transform:translateY(-4px);pointer-events:none;transition:opacity .18s ease,transform .18s ease;z-index:80}.menu-open[data-astro-cid-3ef6ksr2] .menu-panel[data-astro-cid-3ef6ksr2]{opacity:1;transform:translateY(0);pointer-events:auto}.menu-item[data-astro-cid-3ef6ksr2]{display:flex;align-items:center;justify-content:space-between;padding:8px 14px;font-family:var(--font-serif-zh);font-size:14px;color:var(--ink-soft);text-decoration:none;border-radius:4px;transition:background .12s ease,color .12s ease}.menu-item[data-astro-cid-3ef6ksr2]:hover{background:var(--paper-soft);color:var(--ink)}.menu-item--active[data-astro-cid-3ef6ksr2]{color:var(--accent);font-weight:500}.mi-mark[data-astro-cid-3ef6ksr2]{color:var(--accent);font-family:var(--font-serif-en);opacity:0;transition:opacity .18s ease}.menu-item--active[data-astro-cid-3ef6ksr2] .mi-mark[data-astro-cid-3ef6ksr2]{opacity:1}.back-link[data-astro-cid-3ef6ksr2]{display:inline-flex;align-items:center;gap:6px;color:var(--ink-soft);text-decoration:none;font-size:13.5px;font-family:var(--font-serif-zh);padding:6px 10px;border-radius:var(--radius-sm);transition:background .15s ease,color .15s ease}.back-link[data-astro-cid-3ef6ksr2]:hover{background:var(--paper-deep);color:var(--ink)}.back-link[data-astro-cid-3ef6ksr2] svg[data-astro-cid-3ef6ksr2]{flex-shrink:0}@media(max-width:640px){.brand-text[data-astro-cid-3ef6ksr2]{font-size:14px}.back-link[data-astro-cid-3ef6ksr2],.menu-btn[data-astro-cid-3ef6ksr2]{font-size:13px}}@media(max-width:420px){.header-inner[data-astro-cid-3ef6ksr2]{gap:12px}.brand-text[data-astro-cid-3ef6ksr2]{display:none}}@keyframes astroFadeInOut{0%{opacity:1}to{opacity:0}}@keyframes astroFadeIn{0%{opacity:0;mix-blend-mode:plus-lighter}to{opacity:1;mix-blend-mode:plus-lighter}}@keyframes astroFadeOut{0%{opacity:1;mix-blend-mode:plus-lighter}to{opacity:0;mix-blend-mode:plus-lighter}}@keyframes astroSlideFromRight{0%{transform:translate(100%)}}@keyframes astroSlideFromLeft{0%{transform:translate(-100%)}}@keyframes astroSlideToRight{to{transform:translate(100%)}}@keyframes astroSlideToLeft{to{transform:translate(-100%)}}@media(prefers-reduced-motion){::view-transition-group(*),::view-transition-old(*),::view-transition-new(*){animation:none!important}[data-astro-transition-scope]{animation:none!important}}