:root {
  --canvas:#f7f7f7; --sidebar:#fafafa; --surface:#fff;
  --ink:#252a33; --muted:#5e6876; --line:#dfe3e9; --control:#7b8798;
  --blue:#2457b7; --blue-soft:#edf2fc; --focus:#174aab; --error:#a02c32;
  --shadow:0 1px 2px #202a3c04,0 4px 14px #202a3c03;
  --radius:12px; --rail:14rem; --header:64px;
  --font:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;
}
*{box-sizing:border-box}
html{scroll-padding-top:32px;scrollbar-gutter:stable}
body{margin:0;background:var(--canvas);color:var(--ink);font-family:var(--font);font-size:.9375rem;line-height:1.65;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
button,input,textarea{font:inherit}
button{cursor:pointer;color:inherit;border:0;background:none}
button:disabled{cursor:default;opacity:.45}
:focus-visible{outline:3px solid var(--focus);outline-offset:3px}
main:focus,.prose [tabindex="-1"]:focus{outline:none}
svg{width:18px;height:18px;flex-shrink:0;pointer-events:none}
h1,h2,h3,p{margin:0}
h1,h2,h3{font-weight:600;line-height:1.5;text-wrap:balance}
h1{letter-spacing:-.035em}
p{overflow-wrap:anywhere;text-wrap:pretty}
.blue{color:var(--blue)}
.muted{color:var(--muted)}
[hidden]{display:none!important}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.skip-link{position:fixed;top:-100px;left:20px;background:var(--surface);padding:12px 18px;z-index:50;border:1px solid var(--focus);border-radius:6px}
.skip-link:focus{top:12px}
.mobile-header{display:none}

.sidebar{position:fixed;inset:0 auto 0 0;width:var(--rail);background:var(--sidebar);border-right:1px solid var(--line);padding:40px 24px;display:flex;flex-direction:column;z-index:20;overflow-y:auto;overscroll-behavior:contain}
.brand{display:inline-flex;align-items:center;min-height:44px;font-size:1.5625rem;font-weight:650;letter-spacing:-1px;line-height:1.2;width:max-content}
.brand span{color:var(--blue)}
.search-trigger{display:flex;align-items:center;gap:10px;width:100%;min-height:44px;margin:26px 0 20px;padding:8px 12px;color:var(--muted);border:1px solid var(--control);border-radius:7px;background:var(--surface);font-size:.8125rem;text-align:left}
.search-trigger svg{width:16px;height:16px}
kbd{font:inherit;font-size:.75rem;border:1px solid var(--line);border-radius:3px;padding:0 5px;color:var(--muted);background:var(--sidebar);margin-left:auto}
.sidebar nav,.mobile-nav nav{display:grid;gap:6px}
.sidebar nav a,.mobile-nav nav a{min-height:44px;display:flex;align-items:center;gap:13px;padding:10px 13px;border-radius:7px;font-size:.875rem;color:var(--muted)}
.sidebar nav a[aria-current],.mobile-nav nav a[aria-current]{color:var(--blue);background:var(--blue-soft);font-weight:600}
.sidebar nav a[aria-current] svg,.mobile-nav nav a[aria-current] svg{stroke-width:2}
main{margin-left:var(--rail);min-height:100dvh}
.page{max-width:1120px;padding:52px 60px 0;margin:0 auto;min-height:100dvh}
.home-intro{margin:8px 0 36px}
.home-intro h1{font-size:2.125rem;line-height:1.5;letter-spacing:-.04em}
.intro-copy{font-size:.9375rem;color:var(--muted);line-height:1.9;margin-top:12px}
.quiet-link{display:inline-flex;gap:9px;align-items:center;min-height:44px;font-size:.875rem;font-weight:500;width:fit-content}
.quiet-link svg{width:16px;height:16px}
.section-heading{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:10px}
.section-heading h2{font-size:1rem}
.section-heading>a{display:flex;gap:8px;align-items:center;min-height:44px;font-size:.8125rem;color:var(--muted)}
.section-heading>a svg{width:15px;height:15px}
.featured-grid{display:grid;grid-template-columns:1.65fr 1fr;gap:18px}
.feature-article{display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:25px 28px 22px}
.meta{display:flex;align-items:center;flex-wrap:wrap;gap:8px;color:var(--muted);font-size:.75rem;line-height:1.6;font-variant-numeric:tabular-nums}
.meta-dot{color:var(--muted)}
.feature-article h2{font-size:1.5rem;line-height:1.65;letter-spacing:-.025em;margin:18px 0 12px;max-width:450px}
.feature-bottom{margin-top:auto;padding-top:24px;display:flex;align-items:center;justify-content:space-between;color:var(--muted);font-size:.75rem;font-variant-numeric:tabular-nums}
.circle-arrow{width:32px;height:32px;border:1px solid var(--line);color:var(--blue);border-radius:50%;display:grid;place-items:center}
.circle-arrow svg{width:16px;height:16px}
.now-card{background:#f0f2f5;border:1px solid var(--line);border-radius:var(--radius);padding:25px 26px 18px;display:flex;flex-direction:column}
.status-dot{width:6px;height:6px;border-radius:50%;background:#627491}
.now-card h2{font-size:1.3125rem;line-height:1.7;margin:18px 0 8px;letter-spacing:-.02em}
.now-card p{font-size:.875rem;color:var(--muted);line-height:1.9;margin-bottom:13px}
.now-card .quiet-link{margin-top:auto;color:var(--blue)}
.recent-section{margin-top:32px}
.article-list{border-top:1px solid var(--line)}
.article-row{display:flex;align-items:center;justify-content:space-between;gap:24px;padding:21px 0;border-bottom:1px solid var(--line)}
.article-row>div{min-width:0}
.article-row :is(h2,h3){font-size:1.0625rem;font-weight:500;line-height:1.65;margin-top:6px;overflow-wrap:anywhere;text-wrap:pretty}
.search-excerpt{font-size:.875rem;line-height:1.8;color:var(--muted);margin-top:10px}
.search-excerpt mark{color:var(--ink);background:#e4ecfa;border-radius:2px;padding:0 2px}
.row-arrow{color:var(--muted)}
.row-arrow svg{width:18px;height:18px}
.eyebrow{font-size:.8125rem;color:var(--muted);margin-bottom:12px}
.explore-links{display:grid;grid-template-columns:1fr 1fr;gap:30px;margin-top:18px}
.explore-links>a{display:flex;align-items:center;gap:14px;min-height:52px;padding:12px 0;font-size:.9375rem}
.explore-links>a>svg:first-child{color:var(--muted)}
.explore-links>a>svg:last-child{margin-left:auto;width:16px}
.page-footer{margin-top:28px;padding:20px 0 28px;border-top:1px solid var(--line);font-size:.75rem;color:var(--muted)}

.page-intro{margin-bottom:30px}
.page-intro h1{font-size:2rem;line-height:1.5}
.page-intro>p:last-child{font-size:.9375rem;line-height:1.9;color:var(--muted);margin-top:12px}
.search-box{display:flex;align-items:center;gap:12px;min-height:50px;border:1px solid var(--control);border-radius:8px;background:var(--surface);padding:11px 16px}
.search-box>svg{color:var(--muted);width:18px}
.search-box input{border:0;outline:0;background:transparent;flex:1;min-width:0;color:var(--ink);font-size:1rem;line-height:1.6}
.search-box:focus-within{outline:3px solid var(--focus);outline-offset:3px}
.search-box input:focus-visible{outline:0}
input::placeholder,textarea::placeholder{color:var(--muted);opacity:1}
.topic-filters{display:flex;flex-wrap:wrap;gap:6px;margin:16px 0 24px}
.topic-filters button{min-height:44px;padding:9px 13px;border:1px solid transparent;border-radius:7px;color:var(--muted);font-size:.875rem}
.topic-filters button[aria-pressed="true"]{background:var(--surface);border-color:var(--blue);color:var(--blue);font-weight:600}
.result-count{min-height:23px;color:var(--muted);font-size:.8125rem;margin-bottom:12px;font-variant-numeric:tabular-nums}
.pagination{display:flex;justify-content:center;align-items:center;gap:20px;margin-top:28px;font-size:.8125rem;font-variant-numeric:tabular-nums}
.pagination button{min-height:44px;border:1px solid var(--control);border-radius:7px;background:var(--surface);padding:8px 14px}
.empty-state{text-align:center;padding:64px 16px}
.empty-state>svg{width:28px;height:28px;color:var(--muted);margin-bottom:15px}
.empty-state h1,.empty-state h2{font-size:1.375rem;margin:8px 0}
.empty-state .button{margin-top:18px}
.empty-state p{color:var(--muted);font-size:.9375rem;margin:12px 0 22px}
.button{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:10px 18px;background:var(--ink);color:white;border:1px solid var(--ink);border-radius:7px;font-size:.875rem;line-height:1.5}
.button.secondary{background:var(--surface);color:var(--ink);border-color:var(--control)}
.text-button{display:inline-flex;align-items:center;justify-content:center;gap:7px;min-height:44px;color:var(--muted);padding:10px 4px;font-size:.8125rem;line-height:1.6}
.text-button svg{width:16px;height:16px}

.reading-page{max-width:1180px;padding-top:32px}
.reading-top{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:0 16px;font-size:.875rem;color:var(--muted);margin-bottom:32px}
.reading-top>a{display:inline-flex;align-items:center;min-height:44px;min-width:44px}
#share-state{flex-basis:100%;font-size:.8125rem;text-align:right;line-height:1.8}
#share-state:empty{display:none}
.article-header{max-width:740px;margin-bottom:34px}
.article-header .eyebrow{color:var(--blue);display:inline-flex;align-items:center;min-height:44px;margin-bottom:4px}
.article-header h1{font-size:2.125rem;line-height:1.55;letter-spacing:-.03em;margin-bottom:16px}
.article-header>p:not(.source-note){color:var(--muted);line-height:1.9;font-size:1rem}
.article-author{display:flex;align-items:center;gap:10px;margin:24px 0 14px;font-size:.8125rem}
.avatar-letter{width:30px;height:30px;display:grid;place-items:center;background:#e8edf6;color:var(--blue);border-radius:50%;font-size:1.0625rem;font-weight:600}
.source-note{font-size:.75rem;color:var(--muted);line-height:1.8}
.reading-layout{display:grid;grid-template-columns:minmax(0,1fr) 190px;gap:48px}
.reading-layout>div{min-width:0}
.prose{font-size:1.0625rem;line-height:1.95;overflow-wrap:anywhere;color:#343c48;min-width:0;max-width:74ch}
.prose p{margin:0 0 22px}
.prose h2{font-size:1.4375rem;line-height:1.65;color:var(--ink);margin:44px 0 18px;scroll-margin-top:32px}
.prose h2:first-child{margin-top:0}
.prose h3{font-size:1.1875rem;margin:30px 0 14px;scroll-margin-top:32px}
.prose h4{font-size:1.0625rem;margin:25px 0 12px;scroll-margin-top:32px}
.prose strong{font-weight:600;color:var(--ink)}
.prose .abstract-label{white-space:nowrap}
.prose a{color:var(--blue);text-decoration:underline;text-decoration-color:currentColor;text-underline-offset:3px}
.prose hr{height:1px;border:0;background:var(--line);margin:30px 0}
.prose ul,.prose ol{padding-left:25px;margin-bottom:25px}
.prose li{margin:8px 0}
.prose li>p{margin:8px 0}
.prose li>:last-child{margin-bottom:0}
.prose li>ul,.prose li>ol{margin-top:8px;margin-bottom:12px}
.prose blockquote>:last-child{margin-bottom:0}
.prose blockquote{border-left:2px solid #a3afc3;padding:5px 0 5px 20px;margin:26px 0;color:var(--muted);font-size:1rem;line-height:1.9}
.prose pre{overflow-x:auto;white-space:pre;font-size:.8125rem;line-height:1.8;background:#eceff3;padding:18px;border-radius:7px;max-width:100%;overscroll-behavior-x:contain}
.prose code{font-family:ui-monospace,SFMono-Regular,monospace;font-size:.875em;background:#eceff3;padding:2px 4px;border-radius:3px}
.prose pre code{font-size:inherit;padding:0}
.prose figure{margin:28px 0}
.prose figure img{display:block;width:100%;height:auto;background:var(--surface);outline:1px solid #0000001a;outline-offset:-1px;border-radius:6px}
.figure-zoom{display:block;width:100%;padding:0;border-radius:6px;text-align:inherit;cursor:zoom-in}
.image-action{display:flex;justify-content:flex-end;align-items:center;gap:6px;min-height:44px;color:var(--blue);font-size:.8125rem;line-height:1.6}
.image-action svg{width:14px;height:14px}
.prose figcaption{font-size:.8125rem;color:var(--muted);line-height:1.8;margin-top:10px;text-align:left}
.prose figcaption p{margin:0}
.image-error{font-size:.875rem;color:var(--error);margin-top:10px!important}
.table-scroll{max-width:100%;overflow-x:auto;margin:24px 0;border:1px solid var(--line);border-radius:7px;background:var(--surface);overscroll-behavior-x:contain}
table{border-collapse:collapse;min-width:500px;width:100%;font-size:.8125rem;line-height:1.85;font-variant-numeric:tabular-nums}
th,td{border-bottom:1px solid var(--line);text-align:left;padding:11px 13px}
th{background:#eef1f5;font-weight:600;color:var(--ink)}
tr:last-child td{border-bottom:0}
.toc{position:sticky;top:32px;align-self:start;border-left:1px solid var(--line);padding-left:18px;max-height:calc(100dvh - 64px);overflow:auto;overscroll-behavior:contain;font-size:.8125rem;line-height:1.7}
.toc>span{display:block;color:var(--ink);font-size:.8125rem;margin-bottom:12px;font-weight:600}
.toc a{display:flex;align-items:center;min-height:44px;padding:8px 6px 8px 10px;margin-left:-10px;color:var(--muted);border-left:2px solid transparent}
.toc a[aria-current],.mobile-toc a[aria-current]{color:var(--blue);border-left-color:var(--blue);font-weight:600}
.toc a.toc-level-3{padding-left:22px;font-size:.75rem}
.toc .text-button{margin-top:16px}
.feedback{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:24px;margin-top:36px}
.feedback h2,.related>h2{font-size:1.125rem;margin-bottom:16px}
.feedback textarea{display:block;width:100%;min-height:128px;border:1px solid var(--control);border-radius:7px;padding:12px 14px;font-size:1rem;resize:vertical;background:var(--surface);line-height:1.8;color:var(--ink)}
.feedback textarea[aria-invalid="true"]{border-color:var(--error)}
.feedback-actions{display:flex;gap:12px 16px;align-items:center;flex-wrap:wrap;margin:14px 0 8px}
.feedback-state,.field-error{font-size:.8125rem;line-height:1.8;color:var(--muted)}
.feedback-state:not(:empty){margin:6px 0}
.field-error{color:var(--error);margin-top:8px}
.field-error:empty{display:none}
.feedback small{display:block;color:var(--muted);font-size:.75rem;line-height:1.8}
.related{margin:40px 0}
.related .article-row h3{font-size:1rem}
.mobile-toc{display:none}

.projects-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;margin-top:30px}
.project-card{border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:var(--surface);box-shadow:var(--shadow);display:block}
.project-art{height:250px;background:#e8edf5;position:relative;overflow:hidden;padding:29px 34px}
.mini-browser{display:flex;background:var(--canvas);border:1px solid #d2d9e5;border-radius:7px;width:100%;height:220px;box-shadow:0 8px 28px #40567d12;transform:translateY(12px);overflow:hidden}
.mini-rail{width:20%;background:var(--sidebar);border-right:1px solid var(--line);padding:25px 12px}
.mini-rail i{display:block;height:5px;margin:13px 0;background:#dbe1eb;border-radius:2px}
.mini-rail i:first-child{background:#b7c6df}
.mini-main{padding:22px 25px;flex:1;min-width:0}
.mini-main>b{font-size:.6875rem;letter-spacing:-.5px}
.mini-main>b span{color:var(--blue)}
.mini-heading{font-size:.9375rem;line-height:1.6;margin:18px 0 13px;color:#414a59}
.mini-line{height:3px;background:#dbe0e9;max-width:140px;margin:6px 0}
.mini-line.short{max-width:100px}
.mini-block{display:flex;gap:10px;margin-top:18px}
.mini-block i{background:var(--surface);border:1px solid var(--line);border-radius:3px;width:60%;height:50px}
.mini-block i:last-child{width:35%;background:#f0f3f8}
.project-card-body{padding:22px}
.project-card-body h2{font-size:1.125rem;display:flex;align-items:center;justify-content:space-between;margin:10px 0}
.project-card-body h2 svg{width:17px;height:17px;color:var(--muted)}
.project-card-body p{font-size:.875rem;color:var(--muted);line-height:1.9}
.project-summary{display:grid;grid-template-columns:1.5fr 1.3fr 1fr;gap:20px;border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:22px 0;margin:32px 0 40px}
.project-summary span{font-size:.8125rem;color:var(--muted)}
.project-summary p{font-size:.9375rem;margin-top:8px}
.project-narrative>section{display:flex;gap:24px;margin:0 0 36px}
.step-number{font-size:.8125rem;color:var(--muted);padding-top:8px;font-variant-numeric:tabular-nums}
.project-narrative h2{font-size:1.3125rem;line-height:1.7;margin-bottom:14px}
.project-narrative p{font-size:1rem;line-height:1.95;color:var(--muted)}
.project-detail .related{max-width:780px}
.books-empty{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:60px 24px;text-align:center;margin-top:32px}
.book-outline{display:grid;place-items:center;width:64px;height:64px;background:#eef2f8;border-radius:16px;margin:0 auto 22px;color:var(--muted)}
.book-outline svg{width:30px;height:30px}
.books-empty h2{font-size:1.25rem}
.books-empty .quiet-link{margin-top:18px;color:var(--blue)}
.about-layout{display:grid;grid-template-columns:minmax(0,1fr) 200px;gap:55px;margin-top:40px}
.about-copy p{font-size:1rem;line-height:2;color:var(--muted);margin-bottom:20px}
.about-aside h2{font-size:.8125rem;color:var(--muted);margin-bottom:12px}
.about-aside a{display:flex;align-items:center;justify-content:space-between;min-height:48px;padding:12px 0;border-bottom:1px solid var(--line);font-size:.875rem;color:var(--muted)}
.about-aside svg{width:15px;height:15px}
.project-wordmark{display:grid;place-items:center;height:100%;font-size:1.5rem;color:var(--muted)}
.book-grid{display:grid;gap:20px}
.book-card{display:flex;gap:24px;background:var(--surface);border:1px solid var(--line);padding:26px;border-radius:var(--radius)}
.book-card>div:last-child{min-width:0}
.book-spine{min-width:65px;height:90px;border:1px solid #d7e0ed;border-left:6px solid #cad6e9;background:#eef2f8;display:grid;place-items:center;color:var(--muted);border-radius:3px}
.book-card h2{font-size:1.25rem}
.book-author{display:block;color:var(--muted);font-size:.8125rem;margin:7px 0 14px}
.book-card p{color:var(--muted);font-size:.9375rem;line-height:1.9}

.menu-dialog{position:fixed;inset:0 auto 0 0;margin:0;width:min(320px,calc(100vw - 32px));max-width:none;max-height:none;height:100dvh;padding:24px;padding-top:max(24px,env(safe-area-inset-top));padding-bottom:max(24px,env(safe-area-inset-bottom));background:var(--sidebar);color:var(--ink);border:0;border-right:1px solid var(--line);overflow-y:auto;overscroll-behavior:contain}
.menu-dialog::backdrop{background:#17213866}
.menu-heading{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px;color:var(--muted);font-size:.875rem}
.menu-heading button{min-height:44px;min-width:56px;padding:8px 12px;border:1px solid var(--control);border-radius:7px;background:var(--surface);color:var(--ink)}
.mobile-nav .brand{margin-bottom:4px}
.mobile-nav .search-trigger{margin-top:20px}
.modal-open{overflow:hidden}
.image-dialog{width:calc(100vw - 40px);max-width:1200px;max-height:calc(100dvh - 40px);padding:20px;border:1px solid var(--line);border-radius:12px;color:var(--ink);background:var(--surface);overflow:hidden}
.image-dialog[open]{display:flex;flex-direction:column;gap:16px}
.image-dialog::backdrop{background:#172138b3}
.image-dialog-header{display:flex;align-items:center;justify-content:space-between;gap:16px}
.image-dialog-header p{font-size:.875rem;line-height:1.7;min-width:0}
.image-dialog-actions{display:flex;gap:8px;flex-shrink:0}
.image-dialog-actions button{min-height:44px;min-width:60px;padding:8px 12px;border:1px solid var(--control);border-radius:7px;font-size:.8125rem;background:var(--surface)}
.image-stage{min-height:0;max-height:calc(100dvh - 164px);overflow:auto;overscroll-behavior:contain;padding:4px;display:flex;align-items:center;justify-content:center}
.image-stage img{display:block;max-width:100%;max-height:calc(100dvh - 172px);width:auto;height:auto}
.image-stage.is-zoomed{display:block}
.image-stage.is-zoomed img{max-width:none;max-height:none}

@media(hover:hover){
  a:hover,.text-button:not(:disabled):hover{color:var(--blue)}
  .sidebar nav a:hover,.mobile-nav nav a:hover{background:var(--blue-soft)}
  .search-trigger:hover,.topic-filters button:hover{background:var(--blue-soft)}
  .feature-article:hover,.project-card:hover{border-color:#9baecb;color:var(--ink)}
  .article-row:hover :is(h2,h3),.article-row:hover .row-arrow{color:var(--blue)}
  .button:not(:disabled):hover{background:#394556;color:white}
  .button.secondary:hover{background:var(--blue-soft);color:var(--ink)}
  .toc a:hover,.mobile-toc a:hover{color:var(--blue);text-decoration:underline;text-underline-offset:3px}
}
@media(max-width:1180px){
  :root{--rail:12.25rem}
  .sidebar{padding:32px 18px}
  .page{padding-left:36px;padding-right:36px}
  .feature-article,.now-card{padding:23px}
  .feature-article h2{font-size:1.375rem}
  .reading-layout{grid-template-columns:minmax(0,1fr) 160px;gap:30px}
  .about-layout{gap:35px;grid-template-columns:minmax(0,1fr) 160px}
}
@media(max-width:950px){
  .featured-grid{grid-template-columns:1.4fr 1fr}
  .feature-article h2{font-size:1.25rem}
  .reading-layout{display:block}
  .toc{display:none}
  .prose{max-width:none}
  .article-header h1{font-size:1.875rem}
  .projects-grid{grid-template-columns:1fr}
  .project-summary{grid-template-columns:1fr;gap:14px}
  .project-summary>div{display:flex;justify-content:space-between;align-items:baseline;gap:20px}
  .project-summary p{margin:0;text-align:right}
  .about-layout{display:block}
  .about-aside{margin-top:32px}
  .mobile-toc{display:block;border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:6px 0;margin:0 0 30px;font-size:.875rem;color:var(--muted)}
  .mobile-toc summary{cursor:pointer;min-height:44px;padding:10px 0}
  .mobile-toc a{display:block;min-height:44px;padding:10px 12px;font-size:.875rem;border-left:2px solid transparent}
  .mobile-toc a.toc-level-3{padding-left:26px;font-size:.8125rem}
  .mobile-toc nav{padding:4px 0 10px}
}
@media(max-width:700px){
  :root{--rail:0px}
  html{scroll-padding-top:calc(var(--header) + 20px)}
  .mobile-header{display:flex;position:sticky;top:0;min-height:var(--header);align-items:center;justify-content:space-between;gap:16px;padding:8px max(20px,env(safe-area-inset-right)) 8px max(20px,env(safe-area-inset-left));border-bottom:1px solid var(--line);background:var(--sidebar);z-index:30}
  .mobile-header .brand{font-size:1.375rem}
  .mobile-header button{min-height:44px;min-width:60px;font-size:.8125rem;padding:8px 12px;border:1px solid var(--control);border-radius:7px;background:var(--surface)}
  .sidebar{display:none}
  .page{padding:28px max(20px,env(safe-area-inset-right)) 0 max(20px,env(safe-area-inset-left));min-height:calc(100dvh - var(--header))}
  .home-intro h1{font-size:1.875rem;line-height:1.55}
  .intro-copy{font-size:.9375rem;margin-top:14px}
  .home-intro{margin:2px 0 30px}
  .featured-grid{grid-template-columns:1fr;gap:14px}
  .feature-article{padding:22px}
  .feature-article h2{font-size:1.375rem;margin-top:16px}
  .feature-bottom{padding-top:18px}
  .now-card{padding:20px 22px 14px}
  .now-card h2{font-size:1.1875rem;margin:10px 0 6px}
  .now-card p{margin-bottom:6px}
  .recent-section{margin-top:26px}
  .article-row{padding:20px 0;gap:16px}
  .article-row :is(h2,h3){font-size:1rem;line-height:1.7}
  .page-footer{padding-bottom:max(24px,env(safe-area-inset-bottom));margin-top:20px}
  .page-intro{margin-bottom:26px}
  .page-intro h1{font-size:1.75rem}
  .search-box{padding:11px 12px}
  .search-box kbd{display:none}
  .topic-filters{gap:4px}
  .topic-filters button{font-size:.8125rem;padding:9px 10px}
  .pagination{gap:12px}
  .pagination button{padding:8px 12px}
  .reading-top{margin-bottom:22px;font-size:.8125rem}
  .article-header h1{font-size:1.75rem;line-height:1.6;margin-top:4px}
  .article-header>p:not(.source-note){font-size:.9375rem}
  .article-header{margin-bottom:26px}
  .article-author{line-height:1.9}
  .article-author .muted{display:block}
  .prose h2{font-size:1.375rem}
  .prose h3{font-size:1.1875rem}
  .prose h2,.prose h3,.prose h4{scroll-margin-top:8px}
  .feedback{padding:20px 18px}
  .feedback-actions{gap:8px 12px}
  .project-art{height:225px;padding:24px}
  .mini-main{padding:20px}
  .mini-heading{font-size:.875rem}
  .project-card-body{padding:21px}
  .project-narrative>section{gap:16px}
  .books-empty{padding:44px 20px}
  .book-card{padding:20px;gap:18px}
  .image-dialog{width:calc(100vw - 16px);max-height:calc(100dvh - 16px);padding:16px 12px;border-radius:8px}
  .image-dialog-header{flex-wrap:wrap;gap:10px}
  .image-dialog-actions{margin-left:auto}
  .image-stage{max-height:calc(100dvh - 200px)}
  .image-stage img{max-height:calc(100dvh - 208px)}
}
@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation:none!important;transition:none!important}
}
@media(forced-colors:active){
  :focus-visible,.search-box:focus-within{outline-color:Highlight}
  .sidebar nav a[aria-current],.mobile-nav nav a[aria-current],.topic-filters button[aria-pressed="true"]{outline:1px solid Highlight}
  .toc a[aria-current],.mobile-toc a[aria-current]{border-left-color:Highlight}
}

.series-intro {margin: 0 0 48px; padding: 30px; background: #fff; border: 1px solid var(--line); border-radius: 14px;}
.series-intro h2 {font-size: clamp(24px, 3vw, 34px); margin: 12px 0;}
.series-intro p {color: var(--muted); margin-bottom: 24px;}
.publication-note {padding: 20px; border-left: 3px solid var(--accent, #2673e8); background: #f0f5fb; margin-bottom: 32px;}
.publication-note h2 {margin-top: 0;}
.unpublished-reference::after {content: "（未公开）"; font-size: .8em; color: #666;}
.diagram-scroll {overflow: auto; max-width: 100%; margin: 28px 0; border: 1px solid #dfe4eb; border-radius: 10px; padding: 20px; background: white;}
.prose .mermaid {background: white; padding: 0; margin: 0; overflow: visible; width: max-content; min-width: 100%;}
.mermaid svg {width: auto; height: auto; max-width: none !important;}
.math-source[data-display="true"] {overflow-x: auto; max-width: 100%; margin: 20px 0; padding: 8px 0;}
.math-source .katex-display {margin: 0; text-align: left;}
.math-source .katex-display > .katex {text-align: left;}
@media(max-width:700px) {.series-intro {padding: 22px;} .publication-note {padding: 16px;} .diagram-scroll {padding: 12px;}}