:root{--black:#000;--deep:#050505;--panel:#0b0b0b;--panel2:#121212;--hover:#1a1a1a;--white:#fff;--title:#f7f7f7;--text:#ddd;--muted:#a5a5a5;--dim:#727272;--silver:#c7c7c7;--line:rgba(255,255,255,.12);--line2:rgba(255,255,255,.4);--shell:1320px}
*{box-sizing:border-box}html{color-scheme:dark;scroll-behavior:smooth}body{margin:0;background:#000;color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;line-height:1.75;overflow-x:hidden}body.is-locked{overflow:hidden}a{color:inherit;text-decoration:none}a,button,input{font:inherit}button{color:inherit}img{display:block;max-width:100%;height:auto}[hidden]{display:none!important}.shell{width:min(calc(100% - 40px),var(--shell));margin-inline:auto}.skip-link{position:fixed;left:16px;top:-100px;z-index:5000;background:#fff;color:#000;padding:10px 16px}.skip-link:focus{top:16px}
.info-bar{border-bottom:1px solid var(--line);background:#000;color:var(--muted);font-size:12px;letter-spacing:.04em}.info-bar__inner{min-height:34px;display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:24px}.info-bar__brand{margin:0}.info-bar__center,.info-bar__actions{display:flex;align-items:center;gap:18px}.info-bar__actions{justify-content:flex-end}.info-bar a:hover,.text-button:hover{color:#fff}.text-button{border:0;padding:0;background:transparent;cursor:pointer}
.site-header{position:sticky;top:0;z-index:1000;background:#000}.nav-stack{background:rgba(0,0,0,.98);border-bottom:1px solid var(--line)}.brand-nav{border-bottom:1px solid var(--line)}.brand-nav__inner{min-height:72px;display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:24px}.brand-nav__side{min-width:0;display:flex;align-items:center;gap:20px}.brand-nav__side--right{justify-content:flex-end}.menu-trigger,.more-trigger,.icon-button{border:0;background:transparent;cursor:pointer}.menu-trigger{min-height:44px;display:inline-flex;align-items:center;gap:9px;padding:0;font-weight:700}.menu-trigger>span:first-child{font-size:20px}.current-channel{color:var(--muted);font-size:13px;padding-left:20px;border-left:1px solid var(--line);white-space:nowrap}.brand-mark{min-width:170px;text-align:center;display:flex;flex-direction:column;align-items:center;justify-content:center;line-height:1}.brand-mark__zh{color:#fff;font-size:24px;font-weight:900;letter-spacing:.3em;text-indent:.3em}.brand-mark__en{margin-top:8px;color:var(--muted);font-size:9px;letter-spacing:.28em;text-indent:.28em}.brand-logo{max-height:44px;width:auto;object-fit:contain}.brand-link,.compact-link{min-height:44px;display:inline-flex;align-items:center;justify-content:center;white-space:nowrap}.compact-link{border:1px solid var(--line2);padding:0 18px}.compact-link:hover{background:#fff;color:#000}
.channel-bar{min-height:44px}.channel-bar__inner{display:flex;align-items:stretch;justify-content:space-between;gap:18px}.channel-nav{min-width:0;display:flex;align-items:stretch;gap:28px;overflow:hidden}.channel-nav a,.more-trigger{position:relative;min-height:44px;display:inline-flex;align-items:center;white-space:nowrap;color:var(--muted);font-size:13px}.channel-nav a::after,.more-menu a::after{content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:#fff;transform:scaleX(0);transform-origin:left;transition:transform .18s ease;pointer-events:none}.channel-nav a:hover,.channel-nav a.is-current,.more-menu a:hover,.more-menu a.is-current{color:#fff}.channel-nav a:hover::after,.channel-nav a.is-current::after,.more-menu a:hover::after,.more-menu a.is-current::after{transform:scaleX(1)}.more-wrap{position:relative;flex:0 0 auto}.more-trigger{padding:0;gap:7px}.more-menu{position:absolute;right:0;top:calc(100% + 1px);width:210px;background:var(--panel);border:1px solid var(--line);box-shadow:0 18px 46px rgba(0,0,0,.48);padding:8px}.more-menu a{position:relative;display:block;padding:12px 14px;color:var(--muted)}.more-menu a:hover{background:var(--hover)}
.site-main{min-height:65vh}.section{padding:88px 0;border-bottom:1px solid var(--line)}.section--compact{padding:62px 0}.section--panel{background:var(--deep)}.section--light{background:#ededed;color:#000}.section--light .eyebrow,.section--light .section-intro,.section--light .meta-line{color:#444}.section--light .section-title,.section--light h3{color:#000}.section-head{display:grid;grid-template-columns:1fr minmax(280px,520px);gap:48px;align-items:end;margin-bottom:42px}.eyebrow{margin:0 0 12px;color:var(--muted);font-size:12px;font-weight:800;letter-spacing:.22em;text-transform:uppercase}.section-title{margin:0;color:var(--title);font-size:clamp(31px,5vw,64px);line-height:1.08;letter-spacing:-.04em}.section-title--sm{font-size:clamp(26px,3.8vw,46px)}.section-intro{margin:0;color:var(--muted);font-size:16px}.section-link{display:inline-flex;min-height:44px;align-items:center;border-bottom:1px solid var(--line2);color:#fff;font-weight:700}.section-link:hover{border-bottom-color:#fff}
.hero{padding:46px 0 74px;border-bottom:1px solid var(--line)}.hero-grid{display:grid;grid-template-columns:minmax(0,1.35fr) minmax(320px,.65fr);gap:42px;align-items:stretch}.hero-visual,.visual-frame{position:relative;min-height:560px;overflow:hidden;border:1px solid var(--line);background:#080808}.hero-visual img,.visual-frame img{width:100%;height:100%;object-fit:cover;filter:grayscale(1) saturate(.4)}.hero-fallback,.visual-fallback{width:100%;height:100%;min-height:inherit;display:grid;place-items:center;position:relative;overflow:hidden;background:#050505}.hero-fallback::before,.visual-fallback::before{content:"";position:absolute;inset:8%;border:1px solid var(--line)}.hero-fallback::after,.visual-fallback::after{content:"";position:absolute;width:72%;height:1px;background:var(--line2);transform:rotate(-18deg);pointer-events:none}.hero-fallback span,.visual-fallback span{position:relative;z-index:1;color:#fff;font-size:clamp(30px,6vw,84px);font-weight:900;letter-spacing:.14em;text-indent:.14em}.hero-copy{display:flex;flex-direction:column;justify-content:center}.hero-copy h1{margin:0;color:#fff;font-size:clamp(42px,6vw,82px);line-height:1.02;letter-spacing:-.055em}.hero-copy>p{margin:24px 0 0;color:var(--muted)}.actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}.button{min-height:46px;display:inline-flex;align-items:center;justify-content:center;padding:0 22px;border:1px solid var(--line2);font-weight:800;white-space:nowrap}.button--primary{background:#fff;color:#000;border-color:#fff}.button--secondary{background:transparent;color:#fff}.button:hover{transform:translateY(-1px)}.hero-briefs{display:grid;margin-top:38px;border-top:1px solid var(--line)}.hero-briefs a{display:grid;grid-template-columns:96px 1fr auto;gap:16px;align-items:center;padding:16px 0;border-bottom:1px solid var(--line)}.hero-briefs strong{color:#fff}.hero-briefs span{color:var(--muted);font-size:13px}
.page-hero{padding:82px 0 56px;border-bottom:1px solid var(--line)}.page-hero__grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(260px,420px);gap:60px;align-items:end}.page-hero h1{margin:0;color:#fff;font-size:clamp(46px,8vw,104px);line-height:.95;letter-spacing:-.06em}.page-hero__lead{margin:0;color:var(--muted);font-size:17px}.page-index{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px}.page-index a{min-height:40px;display:inline-flex;align-items:center;padding:0 14px;border:1px solid var(--line);color:var(--muted)}.page-index a:hover{border-color:var(--line2);color:#fff}
.feature-grid{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:16px}.feature-card{grid-column:span 4;min-height:290px;display:flex;flex-direction:column;padding:26px;border:1px solid var(--line);background:var(--panel)}.feature-card--wide{grid-column:span 8;min-height:360px}.feature-card__number{margin-bottom:auto;color:var(--dim);font-size:12px;letter-spacing:.18em}.feature-card h3{margin:38px 0 10px;color:#fff;font-size:23px;line-height:1.25}.feature-card p{margin:0;color:var(--muted)}.feature-card footer{margin-top:22px;display:flex;justify-content:space-between;gap:14px;color:var(--silver);font-size:13px}.feature-card:hover{background:var(--hover);border-color:var(--line2)}
.editorial-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));border-top:1px solid var(--line)}.editorial-item{padding:30px 30px 30px 0;border-bottom:1px solid var(--line)}.editorial-item:nth-child(even){padding-left:30px;border-left:1px solid var(--line)}.editorial-item h3{margin:0 0 12px;color:#fff;font-size:25px;line-height:1.28}.editorial-item p{margin:0;color:var(--muted)}.editorial-item .meta-line{margin-bottom:9px;color:var(--dim);font-size:12px;letter-spacing:.12em}.editorial-item .item-link{margin-top:18px;display:inline-flex;min-height:42px;align-items:center;font-weight:800;color:#fff}
.split-feature{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(320px,.95fr);gap:46px;align-items:center}.split-feature .visual-frame{min-height:500px}.split-copy h2{margin:0;color:#fff;font-size:clamp(34px,5vw,62px);line-height:1.08;letter-spacing:-.04em}.split-copy p{color:var(--muted)}.statements{margin:28px 0 0;padding:0;list-style:none;border-top:1px solid var(--line)}.statements li{display:grid;grid-template-columns:36px 1fr;gap:15px;padding:16px 0;border-bottom:1px solid var(--line)}.statements strong{color:#fff}.statements span{color:var(--muted)}
.timeline{border-top:1px solid var(--line)}.timeline article{display:grid;grid-template-columns:120px minmax(180px,.45fr) 1fr 160px;gap:24px;align-items:start;padding:24px 0;border-bottom:1px solid var(--line)}.timeline .timeline-no{color:var(--dim);font-size:12px;letter-spacing:.15em}.timeline h3{margin:0;color:#fff;font-size:21px}.timeline p{margin:0;color:var(--muted)}.status{justify-self:end;display:inline-flex;min-height:32px;align-items:center;padding:0 12px;border:1px solid var(--line);color:var(--silver);font-size:12px;white-space:nowrap}
.note-panel{padding:32px;border:1px solid var(--line2);background:var(--panel)}.note-panel h2,.note-panel h3{margin-top:0;color:#fff}.note-panel p:last-child{margin-bottom:0}.note-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
.faq-list{border-top:1px solid var(--line)}.faq-list details{border-bottom:1px solid var(--line)}.faq-list summary{min-height:68px;display:flex;align-items:center;justify-content:space-between;gap:24px;cursor:pointer;color:#fff;font-size:18px;font-weight:800;list-style:none}.faq-list summary::-webkit-details-marker{display:none}.faq-list summary::after{content:"+";color:var(--muted);font-size:24px;font-weight:400}.faq-list details[open] summary::after{content:"−"}.faq-list details p{max-width:880px;margin:0;padding:0 0 24px;color:var(--muted)}.related-links{display:flex;flex-wrap:wrap;gap:10px;margin-top:30px}.related-links a{min-height:44px;display:inline-flex;align-items:center;padding:0 16px;border:1px solid var(--line)}.related-links a:hover{background:#fff;color:#000;border-color:#fff}
.site-footer{background:#000;padding:72px 0 100px}.footer-grid{display:grid;grid-template-columns:1.7fr repeat(4,1fr);gap:42px}.footer-grid h2{margin:0 0 16px;color:#fff;font-size:13px;letter-spacing:.12em}.footer-grid nav a{display:block;padding:6px 0;color:var(--muted);font-size:14px}.footer-grid nav a:hover{color:#fff}.footer-brand p{max-width:340px;color:var(--muted);font-size:14px}.footer-logo{display:inline-flex;flex-direction:column;margin-bottom:20px}.footer-notice{margin-top:52px;padding-top:24px;border-top:1px solid var(--line);display:flex;justify-content:space-between;gap:28px;color:var(--dim);font-size:12px}.footer-notice p{margin:0;max-width:760px}
.site-overlay{position:fixed;inset:0;z-index:1990;visibility:hidden;opacity:0;pointer-events:none;background:rgba(0,0,0,.72);transition:opacity .18s ease,visibility .18s ease}.site-overlay.is-visible{visibility:visible;opacity:1;pointer-events:auto}.site-drawer{position:fixed;inset:0 auto 0 0;z-index:2000;width:min(520px,90vw);background:#050505;border-right:1px solid var(--line);transform:translateX(-104%);visibility:hidden;pointer-events:none;transition:transform .22s ease,visibility .22s ease}.site-drawer.is-open{transform:translateX(0);visibility:visible;pointer-events:auto}.drawer-head{height:82px;display:flex;align-items:center;justify-content:space-between;padding:0 26px;border-bottom:1px solid var(--line)}.drawer-brand span{display:flex;flex-direction:column;line-height:1.1}.drawer-brand strong{color:#fff;font-size:22px;letter-spacing:.25em}.drawer-brand small{margin-top:7px;color:var(--dim);font-size:9px;letter-spacing:.2em}.icon-button{width:44px;height:44px;display:grid;place-items:center;color:#fff;font-size:30px}.drawer-scroll{height:calc(100% - 82px);overflow-y:auto;padding:24px 26px 70px}.drawer-scroll section+section{margin-top:32px}.drawer-scroll h2{margin:0 0 10px;color:var(--dim);font-size:11px;letter-spacing:.18em}.drawer-scroll a{display:grid;grid-template-columns:112px 1fr;gap:16px;padding:15px 0;border-bottom:1px solid var(--line)}.drawer-scroll a strong{color:#fff}.drawer-scroll a span{color:var(--muted);font-size:13px}
.search-layer{position:fixed;inset:0;z-index:2100;background:#000;visibility:hidden;opacity:0;pointer-events:none;overflow-y:auto;transition:opacity .18s ease,visibility .18s ease}.search-layer.is-open{visibility:visible;opacity:1;pointer-events:auto}.search-layer__inner{padding-top:30px;padding-bottom:90px}.search-head{display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line)}.search-head p{margin:0;color:var(--muted);font-size:13px;letter-spacing:.18em}.search-field{display:block;padding:84px 0 42px}.search-field span{display:block;margin-bottom:16px;color:var(--muted)}.search-field input{width:100%;border:0;border-bottom:1px solid var(--line2);border-radius:0;outline:0;background:transparent;color:#fff;padding:0 0 18px;font-size:clamp(28px,5vw,66px)}.search-field input::placeholder{color:#383838}.search-columns{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:34px}.search-columns h2{color:var(--dim);font-size:12px;letter-spacing:.14em}.search-links{display:grid}.search-links a{padding:13px 0;border-bottom:1px solid var(--line);color:var(--muted)}.search-links a:hover{color:#fff}.search-empty{color:var(--muted);margin-top:28px}.mobile-dock{display:none}:focus-visible{outline:2px solid #fff;outline-offset:4px}
@media(max-width:1080px){.current-channel,.brand-link{display:none}.channel-nav{overflow-x:auto;scrollbar-width:none}.channel-nav::-webkit-scrollbar{display:none}.feature-card{grid-column:span 6}.feature-card--wide{grid-column:span 12}.footer-grid{grid-template-columns:1.5fr repeat(2,1fr)}.footer-brand{grid-row:span 2}}
@media(max-width:760px){.shell{width:min(calc(100% - 28px),var(--shell))}.desktop-only,.info-bar__center,.menu-trigger__text,.current-channel{display:none!important}.info-bar__inner{min-height:32px;grid-template-columns:1fr auto;gap:10px}.info-bar__brand{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.info-bar__actions{gap:14px}.brand-nav__inner{min-height:64px;grid-template-columns:1fr auto 1fr;gap:8px}.brand-nav__side{gap:0}.brand-nav__side--right{justify-content:flex-end}.menu-trigger{width:44px}.brand-mark{min-width:124px}.brand-mark__zh{font-size:20px}.brand-mark__en{font-size:7px}.compact-link{min-height:40px;padding:0 11px;font-size:12px}.channel-bar__inner{width:100%;padding-left:14px;gap:12px}.channel-nav{gap:22px}.channel-nav a,.more-trigger{min-height:42px}.more-wrap{padding-right:14px}.more-menu{right:12px;width:190px}.section{padding:62px 0}.section--compact{padding:48px 0}.section-head,.page-hero__grid{grid-template-columns:1fr;gap:20px}.section-title{font-size:38px}.hero{padding:42px 0 58px}.hero-grid{display:flex;flex-direction:column;gap:28px}.hero-copy{order:1}.hero-visual{order:2;min-height:360px}.hero-copy h1{font-size:47px}.hero-briefs{order:3}.hero-briefs a{grid-template-columns:80px 1fr auto;gap:10px}.page-hero{padding:58px 0 38px}.page-hero h1{font-size:54px}.feature-grid{grid-template-columns:1fr}.feature-card,.feature-card--wide{grid-column:auto;min-height:260px}.editorial-grid{grid-template-columns:1fr}.editorial-item,.editorial-item:nth-child(even){padding:24px 0;border-left:0}.split-feature{grid-template-columns:1fr}.split-feature .visual-frame{min-height:360px}.timeline article{grid-template-columns:62px 1fr;gap:12px 16px}.timeline p,.timeline .status{grid-column:2}.timeline .status{justify-self:start}.note-grid{grid-template-columns:1fr}.footer-grid{grid-template-columns:repeat(2,1fr);gap:34px 22px}.footer-brand{grid-column:1/-1;grid-row:auto}.footer-notice{flex-direction:column}.site-footer{padding-bottom:130px}.drawer-scroll a{grid-template-columns:96px 1fr}.search-field{padding:50px 0 30px}.search-columns{grid-template-columns:1fr;gap:26px}.mobile-dock{position:fixed;left:0;right:0;bottom:0;z-index:1400;min-height:calc(62px + env(safe-area-inset-bottom));display:grid;grid-template-columns:repeat(5,1fr);padding-bottom:env(safe-area-inset-bottom);background:rgba(0,0,0,.97);border-top:1px solid var(--line)}.mobile-dock a{min-height:62px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;color:var(--dim)}.mobile-dock a span{font-size:18px}.mobile-dock a strong{font-size:10px}.mobile-dock a.is-current{color:#fff}.site-drawer,.search-layer{z-index:2200}.site-overlay{z-index:2190}}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{scroll-behavior:auto!important;transition-duration:.01ms!important;animation-duration:.01ms!important;animation-iteration-count:1!important}}

.item-note{margin-top:14px;padding-top:14px;border-top:1px solid var(--line);color:var(--muted);font-size:.9rem;}