@charset "UTF-8";
:root{color-scheme:dark;--bg:#0f0a0a;--floor:#0a0707;--surface:#1a1212;--surface2:#241818;--txt:#f0e8e8;--muted:#c4b0b0;--red:#e63946;--bright:#ff4d4f;--deep:#c41e3a;--line:rgba(230,57,70,.22);--shadow:0 16px 40px rgba(0,0,0,.4)}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--txt);font:16px/1.76 system-ui,-apple-system,"Microsoft YaHei","PingFang SC",sans-serif;overflow-x:hidden}body.dialog-open{overflow:hidden}a{color:inherit;text-decoration:none}a:hover{color:#fff}button,input{font:inherit}button{cursor:pointer}img{display:block;max-width:100%;height:auto;object-fit:contain}button:focus-visible,a:focus-visible,input:focus-visible{outline:3px solid #fff;outline-offset:4px}a:focus-visible{border-radius:3px}button[hidden],[hidden]{display:none!important}.container{width:min(1220px,calc(100% - 44px));margin-inline:auto}.reading{max-width:820px}.site-header{height:72px;position:sticky;z-index:50;top:0;background:rgba(10,7,7,.96);border-bottom:1px solid var(--line);backdrop-filter:blur(15px)}.top-nav{height:100%;display:flex;align-items:center;gap:23px}.brand{display:inline-flex;gap:9px;align-items:center;min-width:0;flex-shrink:0;font-weight:800;line-height:1.2}.brand img{width:auto;max-width:200px;max-height:38px}.brand-fallback{font-family:serif;font-size:23px;letter-spacing:1px;color:#fff}.brand-meta{font-size:10px;letter-spacing:.12em;color:var(--muted)}.nav-center{display:flex;align-self:stretch;align-items:stretch;gap:20px;margin-inline:auto;white-space:nowrap}.nav-center a{display:flex;align-items:center;position:relative;color:var(--muted);font-size:14px}.nav-center a:hover,.nav-center a[aria-current=page]{color:#fff}.nav-center a[aria-current=page]:after{content:"";position:absolute;bottom:0;height:3px;background:var(--bright);left:0;right:0}.nav-actions{display:flex;align-items:center;gap:8px;margin-left:auto}.plain-btn{border:1px solid var(--line);color:#fff;background:var(--surface);border-radius:9px;min-height:44px;padding:8px 12px;white-space:nowrap}.plain-btn:hover{border-color:var(--bright)}.nav-app{border-left:1px solid var(--line);padding-left:14px;white-space:nowrap;font-size:14px}.mobile-menu-label{display:none}.site-main{min-height:50vh}.crumb{font-size:13px;color:var(--muted);padding-top:24px}.crumb a{text-decoration:underline;text-underline-offset:4px}.crumb span{color:#fff}.inner-intro{padding:21px 0 35px;border-bottom:1px solid var(--line)}.eyebrow{color:var(--bright);font-weight:700;font-size:12px;letter-spacing:.18em}.inner-intro h1,.home-hero h1{color:#fff;font-size:clamp(28px,3vw,32px);line-height:1.35;margin:9px 0 12px;letter-spacing:.02em}.inner-intro p{color:var(--muted);font-size:17px;max-width:820px;margin:0}.intro-art{max-width:740px;margin-top:23px}.intro-art img{width:100%;max-height:220px;margin:0 auto}.article-layout{display:grid;grid-template-columns:minmax(0,810px) minmax(0,1fr);gap:clamp(24px,5vw,76px);align-items:start;padding-top:26px;padding-bottom:76px}.article-body{min-width:0}.article-body article{padding:28px 0 31px;border-bottom:1px solid var(--line)}.article-body h2{color:#fff;font-size:clamp(19px,2vw,23px);line-height:1.4;margin:0 0 12px}.article-body p{margin:0;color:var(--txt);line-height:1.85}.article-body .closing{background:var(--surface);border-left:3px solid var(--red);padding:24px 27px;margin-top:27px}.article-side{position:sticky;top:98px;border-top:2px solid var(--red);padding-top:22px}.article-side h2{font-size:17px;margin:0 0 13px}.article-side a{display:block;border-bottom:1px solid var(--line);padding:9px 0;color:var(--muted);font-size:14px}.article-side a:hover{color:#fff}.article-body[data-variant=timeline] article{padding-left:25px;position:relative;border-left:1px solid var(--line);border-bottom:0;margin-left:8px}.article-body[data-variant=timeline] article:before{content:"";position:absolute;left:-5px;top:38px;width:9px;height:9px;background:var(--red);border-radius:50%}.article-body[data-variant=sequence] article h2:before{content:"— ";color:var(--bright)}.article-body[data-variant=editorial] article:nth-of-type(even){padding-left:24px;border-left:2px solid var(--line)}.article-body[data-variant=folio] article{display:grid;grid-template-columns:200px 1fr;gap:25px}.article-body[data-variant=folio] article h2{font-family:serif}.article-body[data-variant=chart] article h2{font-family:serif;font-size:26px}.article-body[data-variant=motif] article:nth-of-type(2n){background:var(--surface);padding-inline:20px;border-radius:12px}.related{display:flex;gap:10px;flex-wrap:wrap;margin-top:26px}.chip{display:inline-flex;align-items:center;min-height:44px;border:1px solid var(--line);border-radius:8px;padding:8px 14px;font-size:14px;color:#fff}.chip:hover{border-color:var(--bright)}.home-hero{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,4fr);gap:44px;align-items:center;padding:62px 0 75px}.home-hero p{max-width:590px;color:var(--muted)}.hero-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:24px}.btn{display:inline-flex;min-height:48px;align-items:center;justify-content:center;border-radius:9px;padding:11px 20px;font-weight:700}.btn-primary{background:linear-gradient(135deg,#ff4d4f 0%,#c41e3a 100%);color:#fff}.btn-secondary{background:var(--surface);border:1px solid var(--bright);color:#fff}.visual-frame{min-width:0;display:grid;place-items:center;background:linear-gradient(145deg,#241818,#110b0b);border:1px solid var(--line);border-radius:14px;padding:12px}.visual-frame img{max-height:300px;width:100%;object-fit:contain}.hero-abstract{max-width:460px;padding:27px;font:700 clamp(24px,4vw,42px)/1.45 serif;letter-spacing:.09em;color:#fff;border-left:4px solid var(--red)}.home-section{padding:54px 0;border-top:1px solid var(--line)}.section-head{display:flex;justify-content:space-between;align-items:end;gap:22px;margin-bottom:24px}.section-head h2{font-size:clamp(23px,2.8vw,29px);margin:0;color:#fff;line-height:1.3}.section-head p{color:var(--muted);margin:8px 0 0;max-width:720px}.mini-link{font-size:14px;white-space:nowrap;color:#fff;border-bottom:1px solid var(--red);padding-bottom:3px}.split{display:grid;grid-template-columns:minmax(0,7fr) minmax(0,3fr);gap:40px;align-items:center}.split.equal{grid-template-columns:repeat(2,minmax(0,1fr))}.split.reverse{grid-template-columns:minmax(0,4fr) minmax(0,6fr)}.home-section p{margin-top:0}.muted{color:var(--muted)}.editor-note{padding:22px 26px;border-left:3px solid var(--red);background:var(--surface);font-size:18px}.small-cards{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:15px}.small-card{background:var(--surface);border:1px solid var(--line);padding:21px;border-radius:11px;min-width:0}.small-card h3{font-size:18px;margin:0 0 8px;color:#fff}.small-card p{font-size:14px;margin:0 0 10px;color:var(--muted)}.index-list{display:grid;gap:0}.index-row{display:flex;justify-content:space-between;align-items:center;gap:15px;padding:14px 0;border-bottom:1px solid var(--line)}.index-row:hover{color:#fff}.index-row span{color:var(--muted);font-size:14px}.theme-columns{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:13px}.theme-columns a{border-bottom:1px solid var(--line);padding:10px 0;display:block}.theme-columns small{display:block;color:var(--muted);line-height:1.55}.picture-text{display:grid;grid-template-columns:minmax(0,4fr) minmax(0,6fr);gap:44px;align-items:center}.picture-text.flip{grid-template-columns:minmax(0,6fr) minmax(0,4fr)}.picture-text .visual-frame img{max-height:220px}.step-list{counter-reset:steps}.step-list p{padding:15px 0;border-bottom:1px solid var(--line)}.step-list strong{display:inline-block;color:#fff;margin-right:10px}.app-icons{display:flex;align-items:center;gap:13px}.app-icons img{width:64px;height:64px}.faq-item{padding:26px 0;border-bottom:1px solid var(--line)}.faq-item h2{font-size:20px;margin:0 0 10px}.faq-item p{margin:0}.site-footer{border-top:1px solid var(--line);background:#080505;padding:52px 0 40px}.footer-top{display:flex;align-items:center;gap:14px;margin-bottom:34px}.footer-top .brand{margin-right:15px}.footer-top p{color:var(--muted);font-size:14px}.footer-grid{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:22px}.footer-grid h2{font-size:14px;color:#fff;margin:0 0 12px}.footer-grid a{display:block;color:var(--muted);font-size:13px;line-height:1.6;padding:6px 0}.footer-grid a:hover{color:#fff}.footer-legal{border-top:1px solid var(--line);margin-top:32px;padding-top:20px;color:var(--muted);font-size:12px}.overlay{position:fixed;inset:72px 0 0;z-index:58;background:rgba(0,0,0,.76)}.panel{position:fixed;top:72px;z-index:60;background:#151010;box-shadow:var(--shadow);border:1px solid var(--line);max-height:calc(100dvh - 80px);overflow-y:auto;overscroll-behavior:contain}.menu-panel{left:50%;transform:translateX(-50%);width:min(1220px,calc(100% - 28px));padding:22px}.search-panel{right:max(16px,calc((100vw - 1220px)/2));width:min(540px,calc(100% - 32px));padding:23px}.panel-top{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:17px}.panel-top h2{color:#fff;margin:0;font-size:20px}.panel-groups{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:18px}.panel-groups h3{color:#fff;font-size:14px;margin:0 0 10px}.panel-item{border-top:1px solid var(--line);display:block;padding:10px 0;line-height:1.35}.panel-item strong{font-size:14px;display:block;color:#fff}.panel-item small{display:block;color:var(--muted);font-size:12px;margin-top:4px}.search-panel>p{color:var(--muted);margin:0 0 12px;font-size:14px}.search-panel input{width:100%;border:1px solid rgba(230,57,70,.5);background:var(--surface2);border-radius:8px;color:#fff;padding:13px;min-height:46px}.search-list{margin-top:14px;display:grid;grid-template-columns:1fr 1fr;gap:3px 12px;max-height:45vh;overflow-y:auto}.search-list a{border-bottom:1px solid var(--line);padding:7px 1px;font-size:14px}.search-fallback{margin-top:18px;border-top:1px solid var(--line);padding-top:12px}.search-fallback h3{font-size:14px;margin:0 0 8px}.search-fallback a{display:inline-block;font-size:13px;color:var(--muted);margin-right:11px;padding:7px 0}.no-match{padding:13px 0;color:var(--muted)}.mobile-bottom{display:none}
@media(max-width:1100px){.nav-center{display:none}.top-nav{gap:10px}.nav-actions{margin-left:auto}.panel-groups{grid-template-columns:repeat(3,minmax(0,1fr))}.footer-grid{grid-template-columns:repeat(3,minmax(0,1fr))}}@media(max-width:760px){.container{width:calc(100% - 32px)}.site-header{height:62px}.top-nav{justify-content:space-between;gap:7px}.brand img{max-width:136px;max-height:33px}.brand-fallback{font-size:18px}.nav-actions{gap:5px}.plain-btn{padding:7px 9px;font-size:13px}.nav-app{display:none}.mobile-menu-label{display:inline}.desktop-menu-label{display:none}#open-menu{order:-1}.site-main{padding-bottom:calc(70px + env(safe-area-inset-bottom))}.crumb{padding-top:18px}.home-hero{grid-template-columns:1fr;gap:25px;padding:36px 0 45px}.visual-frame img{max-height:240px}.home-section{padding:38px 0}.section-head{align-items:start;flex-direction:column;gap:8px}.split,.split.equal,.split.reverse,.picture-text,.picture-text.flip{grid-template-columns:1fr;gap:18px}.small-cards,.theme-columns{grid-template-columns:1fr 1fr}.article-layout{grid-template-columns:1fr;gap:25px;padding-bottom:42px}.article-side{position:static;border-top:1px solid var(--line)}.inner-intro{padding:12px 0 24px}.inner-intro p{font-size:16px}.intro-art img{max-height:190px}.article-body article{padding:23px 0}.article-body[data-variant=folio] article{grid-template-columns:1fr;gap:5px}.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}.footer-top{display:block}.footer-top p{margin:10px 0}.overlay{inset:62px 0 0}.panel{top:62px;max-height:calc(100dvh - 66px)}.menu-panel{width:calc(100% - 12px);padding:15px}.search-panel{left:6px;right:6px;width:auto;padding:17px}.panel-groups{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.panel-groups h3{font-size:13px}.panel-item{padding:8px 0}.panel-item small{font-size:11px}.mobile-bottom{display:flex;position:fixed;z-index:48;bottom:0;left:0;right:0;background:#080505;border-top:1px solid var(--line);height:calc(60px + env(safe-area-inset-bottom));padding-bottom:env(safe-area-inset-bottom)}.mobile-bottom a{position:relative;flex:1;min-width:0;display:flex;align-items:center;justify-content:center;font-size:13px;color:var(--muted);min-height:54px}.mobile-bottom a[aria-current=page]{color:#fff}.mobile-bottom a[aria-current=page]:before{content:"";height:3px;position:absolute;top:0;left:20%;right:20%;background:var(--red)}}@media(max-width:360px){.brand img{max-width:109px}.brand-fallback{font-size:17px}.nav-actions{gap:3px}.plain-btn{font-size:12px;padding:6px 7px}.small-cards,.theme-columns{grid-template-columns:1fr}.search-list{grid-template-columns:1fr}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
/* 在中等屏宽下让正文与延伸阅读先后排列，避免右侧索引被压成零宽。 */
@media (min-width:761px) and (max-width:1100px){
  .article-layout{grid-template-columns:minmax(0,1fr)}
  .article-body,.article-side{max-width:820px}
  .article-side{position:static}
}
/* 本地图像缺失时，不留下无意义的边框和空白图片格。 */
.visual-frame:empty,.intro-art:empty{display:none}
.picture-text:has(> .visual-frame:empty){grid-template-columns:minmax(0,1fr)}