:root{--primary:#176B8D;--primary-2:#2187AE;--sky:#55AFD3;--sky-light:#A9D9EA;--sky-soft:#E5F3F8;--navy:#123B50;--navy-2:#0B2938;--navy-dark:#071E2A;--accent:#D97945;--accent-soft:#F7E7DB;--bg:#F5F9FA;--bg-2:#EBF2F4;--bg-3:#FAFCFC;--surface:#fff;--surface-soft:rgba(255,255,255,.86);--text:#203640;--text-2:#60747D;--text-3:#91A0A6;--line:rgba(23,107,141,.10);--line-strong:rgba(23,107,141,.22);--shadow:0 6px 24px rgba(18,59,80,.08);--shadow-hover:0 15px 38px rgba(18,59,80,.14);--radius:10px;--radius-card:14px;--radius-large:20px;--radius-pill:999px;--wrap:1320px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:Inter,"PingFang SC","Microsoft YaHei",sans-serif;color:var(--text);background:var(--bg);line-height:1.65}a{color:inherit;text-decoration:none}img{display:block;width:100%;object-fit:cover}.wrap{width:min(var(--wrap),calc(100% - 40px));margin:auto}.topbar{padding:7px 20px;text-align:center;background:var(--navy-dark);color:#cde9f4;font-size:13px;letter-spacing:.05em}.site-header{position:sticky;top:0;z-index:30;background:rgba(250,252,252,.94);backdrop-filter:blur(16px);border-bottom:1px solid var(--line)}.header-inner{height:72px;display:flex;align-items:center;gap:32px}.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:20px}.brand img{width:34px;height:34px;border-radius:10px}.desktop-nav{display:flex;gap:6px;flex:1}.desktop-nav a{padding:9px 13px;border-radius:10px;color:var(--text-2);font-weight:650}.desktop-nav a:hover,.desktop-nav a.active{background:var(--sky-soft);color:var(--primary)}.header-actions{display:flex;align-items:center;gap:14px;font-size:14px}.app-btn{background:var(--primary);color:#fff!important;padding:9px 15px;border-radius:999px}.menu-btn{border:0;background:transparent;font-size:20px;cursor:pointer}.mega-menu{display:none;border-top:1px solid var(--line);background:#fff}.mega-menu.open{display:block}.mega-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:8px;padding:20px 0}.mega-grid a{padding:10px;border-radius:10px}.mega-grid a:hover{background:var(--sky-soft)}.hero{padding:54px 0 42px}.hero-grid{display:grid;grid-template-columns:1.02fr .98fr;gap:48px;align-items:center}.eyebrow{display:inline-block;color:var(--primary);font-size:12px;font-weight:800;letter-spacing:.13em;text-transform:uppercase}.hero h1{font-size:clamp(44px,5vw,76px);line-height:1.04;letter-spacing:-.045em;margin:14px 0 20px}.hero p{font-size:18px;color:var(--text-2);max-width:700px}.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin:28px 0}.btn{display:inline-flex;align-items:center;justify-content:center;padding:13px 20px;border-radius:12px;font-weight:750;border:1px solid var(--line-strong)}.btn.primary{background:var(--primary);color:#fff;border-color:var(--primary)}.btn.secondary{background:#fff}.searchbox{display:flex;background:#fff;border:1px solid var(--line-strong);padding:7px;border-radius:14px;box-shadow:var(--shadow);max-width:610px}.searchbox input{flex:1;border:0;outline:0;padding:8px 12px;font-size:15px;background:transparent}.searchbox button{border:0;background:var(--navy);color:#fff;padding:10px 16px;border-radius:10px}.hero-visual{position:relative}.hero-visual>img{height:540px;border-radius:26px;box-shadow:0 26px 80px rgba(7,30,42,.22)}.float-panel{position:absolute;background:rgba(255,255,255,.93);backdrop-filter:blur(18px);border:1px solid rgba(255,255,255,.7);box-shadow:var(--shadow-hover);border-radius:16px;padding:15px 18px;min-width:200px}.float-panel.hot{left:-24px;bottom:36px}.float-panel.live{right:-18px;top:34px}.float-panel strong{display:block;font-size:24px}.live-dot{display:inline-block;width:8px;height:8px;background:var(--accent);border-radius:50%;margin-right:6px}.chips{display:flex;gap:9px;flex-wrap:wrap}.chip{padding:9px 13px;border:1px solid var(--line);border-radius:999px;background:#fff;color:var(--text-2)}.chip:hover{border-color:var(--sky);color:var(--primary)}.section{padding:52px 0}.section.alt{background:var(--bg-2)}.section.dark{background:var(--navy-dark);color:#eaf6fa}.section.dark .section-head p,.section.dark .meta-row,.section.dark .video-meta p{color:#abc3cc}.section.dark .eyebrow{color:#81c6df}.section-head{display:flex;justify-content:space-between;gap:30px;align-items:end;margin-bottom:24px}.section-head h2{font-size:34px;line-height:1.15;margin:7px 0}.section-head p{margin:0;color:var(--text-2);max-width:720px}.text-link{color:var(--primary);font-weight:700;white-space:nowrap}.section.dark .text-link{color:#8dd1eb}.video-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}.video-card{min-width:0}.thumb{position:relative;display:block;aspect-ratio:16/9;border-radius:14px;overflow:hidden;background:var(--bg-2)}.thumb img{height:100%;transition:.25s}.thumb:hover img{transform:scale(1.02)}.play{position:absolute;left:14px;bottom:14px;width:38px;height:38px;border-radius:50%;display:grid;place-items:center;background:rgba(255,255,255,.9);color:var(--navy);font-size:13px;transition:.2s}.thumb:hover .play{transform:scale(1.06)}.duration{position:absolute;right:10px;bottom:10px;background:rgba(7,30,42,.78);color:#fff;font-size:12px;padding:4px 7px;border-radius:7px}.video-meta{padding:14px 2px}.video-meta h3{font-size:18px;line-height:1.35;margin:6px 0 8px}.video-meta p{margin:0;color:var(--text-2);font-size:14px}.meta-row{display:flex;justify-content:space-between;gap:12px;color:var(--text-3);font-size:12px;margin-top:11px}.featured-layout{display:grid;grid-template-columns:1.35fr .65fr;gap:22px}.featured-main .thumb{aspect-ratio:16/8.7}.featured-main h3{font-size:28px}.featured-side{display:grid;grid-template-columns:1fr 1fr;gap:16px}.featured-side .video-meta p{display:none}.rail{display:grid;grid-auto-flow:column;grid-auto-columns:minmax(260px,1fr);gap:18px;overflow:auto;padding-bottom:8px;scrollbar-width:thin}.ranking{display:grid;grid-template-columns:1fr 1fr;gap:12px}.rank-item{display:grid;grid-template-columns:44px 1fr auto;gap:14px;align-items:center;padding:14px 0;border-bottom:1px solid var(--line)}.rank-num{font-size:24px;font-weight:900;color:var(--primary)}.rank-item small{color:var(--text-3)}.live-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}.live-card{background:#fff;border-radius:16px;overflow:hidden;color:var(--text);box-shadow:var(--shadow)}.live-thumb{position:relative;aspect-ratio:16/9}.live-thumb img{height:100%}.live-badge{position:absolute;left:12px;top:12px;background:var(--accent);color:white;padding:5px 9px;border-radius:8px;font-size:11px;font-weight:900;letter-spacing:.08em}.live-body{padding:16px}.live-body h3{margin:4px 0 7px}.live-body p{margin:0;color:var(--text-2);font-size:14px}.anchor-row{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.anchor-card{display:grid;grid-template-columns:82px 1fr;gap:16px;padding:18px;background:#fff;border:1px solid var(--line);border-radius:16px}.anchor-card img{width:82px;height:82px;border-radius:50%}.anchor-card strong{margin-right:8px}.anchor-focus{font-size:12px;color:var(--primary)}.anchor-card p{margin:6px 0;color:var(--text-2);font-size:13px}.anchor-card small{color:var(--text-3)}.status-dot{display:inline-block;width:8px;height:8px;border-radius:50%;background:var(--sky);margin-right:7px}.bento{display:grid;grid-template-columns:1.15fr .85fr .85fr;grid-template-rows:240px 240px;gap:16px}.bento-card{position:relative;overflow:hidden;border-radius:18px;background:var(--navy);color:#fff;padding:24px}.bento-card.big{grid-row:1/3}.bento-card img{position:absolute;inset:0;height:100%;opacity:.55}.bento-card:after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(7,30,42,.05),rgba(7,30,42,.82))}.bento-card .content{position:absolute;z-index:2;left:24px;right:24px;bottom:22px}.bento-card h3{font-size:25px;line-height:1.2;margin:6px 0}.topic-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:28px}.topic-list{display:grid;gap:12px}.topic-card{background:#fff;border:1px solid var(--line);border-radius:15px;padding:18px}.topic-card h3{margin:3px 0 8px}.topic-card p{margin:0;color:var(--text-2)}.topic-foot{display:flex;gap:16px;color:var(--text-3);font-size:12px;margin-top:12px}.trend-box{background:var(--navy);color:#fff;border-radius:18px;padding:24px}.trend-bar{margin:18px 0}.trend-bar div{display:flex;justify-content:space-between;font-size:13px}.trend-bar span{display:block;height:7px;border-radius:999px;background:rgba(255,255,255,.16);overflow:hidden;margin-top:6px}.trend-bar i{display:block;height:100%;background:var(--sky);border-radius:999px}.split{display:grid;grid-template-columns:1fr 1fr;gap:32px;align-items:center}.split img{height:390px;border-radius:20px}.split h2{font-size:38px;line-height:1.15}.feature-list{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin:22px 0}.feature-list div{padding:12px 14px;background:#fff;border:1px solid var(--line);border-radius:12px}.timeline{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}.time-card{padding:20px;border-left:3px solid var(--sky);background:#fff;border-radius:0 14px 14px 0}.time-card strong{display:block;margin-bottom:5px}.faq{max-width:900px;margin:auto}.faq details{background:#fff;border:1px solid var(--line);border-radius:14px;padding:16px 18px;margin:10px 0}.faq summary{cursor:pointer;font-weight:750}.page-hero{padding:62px 0 38px}.page-hero-grid{display:grid;grid-template-columns:1fr .7fr;gap:36px;align-items:center}.page-hero h1{font-size:54px;line-height:1.08;margin:8px 0 14px}.page-hero p{font-size:17px;color:var(--text-2)}.page-hero img{height:320px;border-radius:20px}.content-shell{display:grid;grid-template-columns:1fr 320px;gap:32px}.sidebar-card{background:#fff;padding:20px;border-radius:16px;border:1px solid var(--line);position:sticky;top:96px}.sidebar-card h3{margin-top:0}.sidebar-card a{display:block;padding:9px 0;border-bottom:1px solid var(--line)}.player{background:#000;border-radius:18px;overflow:hidden;aspect-ratio:16/9;display:grid;place-items:center;color:#fff;position:relative}.player img{width:100%;height:100%;opacity:.55}.player .play-big{position:absolute;width:76px;height:76px;border-radius:50%;display:grid;place-items:center;background:#fff;color:var(--navy);font-size:26px}.article{background:#fff;border-radius:18px;padding:28px;border:1px solid var(--line)}.article h1,.article h2,.article h3{line-height:1.2}.notice{background:var(--accent-soft);border-left:4px solid var(--accent);padding:14px 16px;border-radius:10px;color:#71452f}.footer{background:var(--navy-dark);color:#bdd3dc;padding:52px 0 24px;margin-top:40px}.footer-grid{display:grid;grid-template-columns:1.6fr repeat(3,1fr);gap:36px}.footer h4{color:white}.footer a{display:block;margin:8px 0}.footer-brand{color:#fff}.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding-top:18px;margin-top:30px;display:flex;justify-content:space-between;gap:20px;font-size:12px}.mobile-bottom{display:none}.empty-state{padding:30px;background:#fff;border:1px dashed var(--line-strong);border-radius:14px;color:var(--text-2)}@media(max-width:980px){.desktop-nav{display:none}.hero-grid,.page-hero-grid,.featured-layout,.topic-grid,.split,.content-shell{grid-template-columns:1fr}.hero-visual>img{height:420px}.video-grid{grid-template-columns:repeat(2,1fr)}.live-grid,.anchor-row{grid-template-columns:repeat(2,1fr)}.bento{grid-template-columns:1fr 1fr}.bento-card.big{grid-column:1/3;grid-row:auto}.timeline{grid-template-columns:1fr 1fr}.mega-grid{grid-template-columns:repeat(3,1fr)}.footer-grid{grid-template-columns:1fr 1fr}.sidebar-card{position:static}}@media(max-width:640px){.wrap{width:min(100% - 24px,var(--wrap))}.header-inner{height:62px}.header-actions>a:not(.app-btn){display:none}.topbar{font-size:11px}.hero{padding-top:34px}.hero h1{font-size:42px}.hero-visual>img{height:340px}.float-panel{min-width:160px;padding:12px}.float-panel.hot{left:8px}.float-panel.live{right:8px}.section{padding:38px 0}.section-head{align-items:start;flex-direction:column}.section-head h2{font-size:28px}.video-grid,.live-grid,.anchor-row,.featured-side,.ranking,.timeline,.feature-list{grid-template-columns:1fr}.bento{display:block}.bento-card{min-height:230px;margin-bottom:12px}.anchor-card{grid-template-columns:68px 1fr}.anchor-card img{width:68px;height:68px}.footer-grid{grid-template-columns:1fr}.footer-bottom{flex-direction:column}.mobile-bottom{display:grid;grid-template-columns:repeat(5,1fr);position:fixed;z-index:40;bottom:0;left:0;right:0;background:rgba(255,255,255,.95);backdrop-filter:blur(16px);border-top:1px solid var(--line);padding:7px 4px}.mobile-bottom a{font-size:16px;text-align:center;color:var(--text-2)}.mobile-bottom span{display:block;font-size:10px}.footer{padding-bottom:82px}.mega-grid{grid-template-columns:repeat(2,1fr)}}