: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:#FFFFFF;--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",system-ui,-apple-system,sans-serif;background:var(--bg);color:var(--text);line-height:1.6}img{max-width:100%;display:block}a{color:inherit;text-decoration:none}button,input{font:inherit}.wrap{width:min(var(--wrap),calc(100% - 40px));margin:auto}.top-note{font-size:13px;background:var(--navy-dark);color:#cfe8f1}.top-note .wrap{display:flex;justify-content:space-between;align-items:center;min-height:34px}.top-note a{color:#fff}.site-header{position:sticky;top:0;z-index:50;background:rgba(250,252,252,.92);backdrop-filter:blur(16px);border-bottom:1px solid var(--line)}.nav-wrap{display:flex;align-items:center;gap:28px;min-height:72px}.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}.brand img{width:42px;height:42px;border-radius:12px}.brand span{display:flex;flex-direction:column;line-height:1.15}.brand b{font-size:18px;letter-spacing:.03em}.brand small{font-size:9px;letter-spacing:.15em;color:var(--text-3)}.main-nav{display:flex;gap:4px;align-items:center;flex:1}.main-nav a{padding:10px 12px;border-radius:10px;color:var(--text-2);font-size:15px}.main-nav a:hover,.main-nav a.active{background:var(--sky-soft);color:var(--primary)}.nav-actions{display:flex;align-items:center;gap:8px}.icon-btn,.app-pill{height:38px;min-width:38px;border:1px solid var(--line);background:#fff;border-radius:12px;display:grid;place-items:center;color:var(--navy);cursor:pointer}.app-pill{padding:0 13px;font-weight:700;background:var(--primary);color:#fff}.mega-menu{display:none;border-top:1px solid var(--line);background:#fff;box-shadow:var(--shadow)}.mega-menu.open{display:block}.mega-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:12px;padding:18px 0 22px}.mega-grid a{padding:12px;border-radius:12px;background:var(--bg-3);font-weight:700}.mega-grid small{display:block;font-weight:400;color:var(--text-3);margin-top:2px}.search-panel{display:none;background:#fff;border-bottom:1px solid var(--line);box-shadow:var(--shadow);padding:24px;position:sticky;top:72px;z-index:45}.search-panel.open{display:block}.search-panel form{max-width:850px;margin:auto}.search-panel label{font-weight:700;display:block;margin-bottom:10px}.search-row{display:flex;gap:10px}.search-row input{flex:1;padding:13px 16px;border-radius:12px;border:1px solid var(--line-strong);outline:none;background:var(--bg-3)}.hot-terms{display:flex;gap:8px;flex-wrap:wrap;margin-top:10px}.hot-terms a,.chip{padding:7px 11px;border-radius:var(--radius-pill);background:var(--sky-soft);color:var(--primary);font-size:13px}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:11px 18px;border-radius:12px;border:1px solid var(--primary);background:var(--primary);color:#fff;font-weight:700;cursor:pointer}.btn.light{background:#fff;color:var(--primary);border-color:#fff}.btn.ghost{background:transparent;color:var(--primary);border-color:var(--line-strong)}.btn.dark{background:var(--navy-dark);border-color:var(--navy-dark)}.eyebrow{display:inline-block;color:var(--primary);font-size:12px;font-weight:800;letter-spacing:.14em;text-transform:uppercase;margin-bottom:10px}.hero{padding:72px 0 44px;background:linear-gradient(180deg,#fafdfe 0,var(--bg) 100%)}.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:54px;align-items:center}.hero-copy h1{font-size:clamp(42px,5vw,76px);line-height:1.06;margin:0 0 22px;letter-spacing:-.04em;color:var(--navy-dark)}.hero-copy p{font-size:18px;color:var(--text-2);max-width:700px;margin:0 0 14px}.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin:26px 0}.hero-search{display:flex;gap:10px;padding:8px;background:#fff;border:1px solid var(--line);border-radius:16px;box-shadow:var(--shadow);max-width:650px}.hero-search input{flex:1;border:0;background:transparent;padding:8px 12px;outline:none}.hero-side{display:grid;grid-template-columns:1.2fr .8fr;gap:14px}.hero-visual{grid-row:span 2;position:relative;min-height:520px;border-radius:28px;overflow:hidden;box-shadow:var(--shadow-hover)}.hero-visual img{width:100%;height:100%;object-fit:cover;position:absolute;inset:0}.hero-overlay{position:absolute;inset:auto 20px 20px;background:rgba(7,30,42,.82);color:#fff;padding:18px;border-radius:16px;backdrop-filter:blur(10px)}.hero-panel{background:#fff;border:1px solid var(--line);border-radius:18px;padding:18px;box-shadow:var(--shadow)}.hero-panel h3{margin:0 0 14px}.stat-list{display:grid;gap:10px}.stat-item{display:flex;justify-content:space-between;align-items:center;padding:10px 0;border-bottom:1px solid var(--line)}.stat-item:last-child{border-bottom:0}.stat-item strong{color:var(--primary);font-size:20px}.section{padding:54px 0}.section.alt{background:var(--bg-2)}.section.dark{background:var(--navy-dark);color:#fff}.section.dark .section-head p,.section.dark .meta,.section.dark .card-body p,.section.dark .byline{color:#b8d2dc}.section.dark .eyebrow{color:var(--sky)}.section.dark .text-link{color:#d9eef5}.section-head{display:flex;justify-content:space-between;align-items:end;gap:20px;margin-bottom:24px}.section-head h2{font-size:clamp(28px,3vw,42px);line-height:1.15;margin:0 0 6px;letter-spacing:-.02em}.section-head p{margin:0;color:var(--text-2);max-width:760px}.text-link{color:var(--primary);font-weight:700;white-space:nowrap}.chips{display:flex;flex-wrap:wrap;gap:9px}.chips a{padding:9px 14px;border-radius:var(--radius-pill);background:#fff;border:1px solid var(--line);color:var(--text-2)}.chips a:hover{border-color:var(--primary);color:var(--primary)}.featured-layout{display:grid;grid-template-columns:1.35fr .65fr;gap:18px}.featured-main .media-box{aspect-ratio:16/9}.editor-list{display:grid;gap:12px}.editor-item{display:grid;grid-template-columns:120px 1fr;gap:12px;padding-bottom:12px;border-bottom:1px solid var(--line)}.editor-item img{width:120px;aspect-ratio:16/9;object-fit:cover;border-radius:12px}.editor-item h3{font-size:16px;margin:2px 0}.editor-item p{font-size:13px;color:var(--text-2);margin:0}.video-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}.video-track{display:grid;grid-auto-flow:column;grid-auto-columns:minmax(270px,1fr);gap:16px;overflow:auto;padding-bottom:8px;scroll-snap-type:x proximity}.video-track>*{scroll-snap-align:start}.video-card,.live-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;box-shadow:0 2px 10px rgba(18,59,80,.04);transition:.2s ease}.video-card:hover,.live-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover)}.media-box{display:block;position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--bg-2)}.media-box img{width:100%;height:100%;object-fit:cover;transition:.25s ease}.video-card:hover .media-box img{transform:scale(1.02)}.play{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);width:46px;height:46px;border-radius:50%;display:grid;place-items:center;background:rgba(255,255,255,.88);color:var(--navy-dark);padding-left:3px;transition:.2s}.video-card:hover .play{transform:translate(-50%,-50%) scale(1.06)}.duration{position:absolute;right:10px;bottom:10px;background:rgba(7,30,42,.8);color:#fff;border-radius:8px;padding:4px 7px;font-size:12px}.card-body{padding:15px}.meta{display:flex;justify-content:space-between;gap:10px;color:var(--text-3);font-size:12px}.card-body h3{font-size:17px;line-height:1.35;margin:7px 0}.card-body p{font-size:14px;color:var(--text-2);margin:0 0 10px}.byline{font-size:13px;color:var(--text-2);font-weight:700}.live-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}.live-card .media-box{aspect-ratio:16/10}.live-badge{position:absolute;left:10px;top:10px;background:var(--accent);color:#fff;border-radius:8px;padding:5px 9px;font-size:11px;font-weight:800;letter-spacing:.08em}.live-dot{position:absolute;right:14px;top:14px;width:9px;height:9px;background:var(--sky);border-radius:50%;box-shadow:0 0 0 5px rgba(85,175,211,.18)}.anchor-list{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}.anchor-card{display:grid;grid-template-columns:88px 1fr;gap:15px;align-items:center;background:#fff;border:1px solid var(--line);padding:16px;border-radius:16px}.anchor-card img{width:88px;height:88px;border-radius:50%;object-fit:cover}.anchor-top{display:flex;justify-content:space-between;gap:12px;align-items:center}.anchor-top h3{margin:0;font-size:19px}.anchor-top span{font-size:11px;padding:4px 8px;border-radius:var(--radius-pill);background:var(--accent-soft);color:var(--accent)}.anchor-card strong{font-size:13px;color:var(--primary)}.anchor-card p{margin:5px 0 0;color:var(--text-2);font-size:14px}.rank-layout{display:grid;grid-template-columns:.65fr 1.35fr;gap:24px}.rank-list{background:#fff;border-radius:18px;border:1px solid var(--line);overflow:hidden}.rank-item{display:grid;grid-template-columns:48px 1fr auto;gap:12px;align-items:center;padding:14px 16px;border-bottom:1px solid var(--line)}.rank-item:last-child{border-bottom:0}.rank-num{font-weight:900;font-size:22px;color:var(--primary)}.rank-item:nth-child(-n+3) .rank-num{color:var(--accent)}.rank-item h3{margin:0;font-size:15px}.rank-item small{color:var(--text-3)}.bento{display:grid;grid-template-columns:1.2fr .8fr .8fr;grid-template-rows:240px 240px;gap:16px}.bento-card{position:relative;border-radius:20px;overflow:hidden;min-height:200px}.bento-card:first-child{grid-row:span 2}.bento-card img{width:100%;height:100%;object-fit:cover}.bento-card .shade{position:absolute;inset:0;background:linear-gradient(180deg,transparent 20%,rgba(7,30,42,.82));display:flex;align-items:end;padding:20px;color:#fff}.bento-card h3{margin:0;font-size:24px}.two-col{display:grid;grid-template-columns:1.2fr .8fr;gap:26px}.magazine-flow{display:grid;gap:14px}.magazine-item{display:grid;grid-template-columns:160px 1fr;gap:16px;border-bottom:1px solid var(--line);padding-bottom:14px}.magazine-item img{width:160px;aspect-ratio:16/10;object-fit:cover;border-radius:14px}.magazine-item h3{margin:4px 0}.magazine-item p{margin:0;color:var(--text-2);font-size:14px}.topic-list{display:grid;gap:12px}.topic-card{display:grid;grid-template-columns:44px 1fr;gap:12px;background:#fff;border:1px solid var(--line);border-radius:16px;padding:16px}.avatar{width:44px;height:44px;border-radius:50%;display:grid;place-items:center;background:var(--sky-soft);color:var(--primary);font-weight:800}.topic-card h3{margin:5px 0;font-size:17px}.topic-card p{margin:0;color:var(--text-2);font-size:14px}.topic-foot{display:flex;justify-content:space-between;color:var(--text-3);font-size:12px;margin-top:9px}.trend-list{display:grid;gap:14px}.trend-row{display:grid;grid-template-columns:100px 1fr 40px;gap:12px;align-items:center}.trend-bar{height:9px;background:var(--bg-2);border-radius:20px;overflow:hidden}.trend-fill{height:100%;background:linear-gradient(90deg,var(--primary),var(--sky));border-radius:20px}.timeline{display:grid;gap:0;border-left:2px solid var(--line-strong);margin-left:10px;padding-left:24px}.timeline-item{position:relative;padding:0 0 24px}.timeline-item:before{content:"";position:absolute;width:12px;height:12px;border-radius:50%;background:var(--primary);left:-31px;top:6px;box-shadow:0 0 0 5px var(--sky-soft)}.timeline-item h3{margin:0 0 4px}.timeline-item p{margin:0;color:var(--text-2)}.feature-banner{display:grid;grid-template-columns:1fr 1fr;gap:26px;align-items:center;background:var(--navy-2);border-radius:24px;overflow:hidden;color:#fff}.feature-banner img{height:100%;min-height:330px;object-fit:cover}.feature-banner .copy{padding:36px}.feature-banner h2{font-size:38px;margin:0 0 12px}.feature-banner p{color:#c4d9e1}.long-copy{max-width:900px}.long-copy h2{font-size:34px}.long-copy p{color:var(--text-2);font-size:16px}.tutorial-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.tutorial-card{background:#fff;border:1px solid var(--line);border-radius:15px;padding:20px}.tutorial-card .tag{color:var(--primary);font-size:12px;font-weight:800}.tutorial-card h3{margin:8px 0}.tutorial-card p{margin:0;color:var(--text-2);font-size:14px}.app-showcase{display:grid;grid-template-columns:1fr .85fr;gap:36px;align-items:center}.app-showcase img{border-radius:24px;box-shadow:var(--shadow-hover)}.feature-list{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;margin:22px 0}.feature-point{background:#fff;border:1px solid var(--line);padding:14px;border-radius:14px}.feature-point strong{display:block}.feature-point span{font-size:13px;color:var(--text-2)}.faq-list{display:grid;gap:10px}.faq-item{background:#fff;border:1px solid var(--line);border-radius:14px;padding:0 16px}.faq-item summary{cursor:pointer;font-weight:700;padding:16px 0}.faq-item p{color:var(--text-2);margin:0;padding:0 0 16px}.page-hero{padding:58px 0;background:linear-gradient(135deg,#fafdfe,var(--sky-soft))}.page-hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:34px;align-items:center}.page-hero h1{font-size:clamp(38px,5vw,64px);line-height:1.08;margin:0 0 18px;color:var(--navy-dark)}.page-hero p{font-size:17px;color:var(--text-2);max-width:700px}.page-hero-art{border-radius:22px;overflow:hidden;min-height:340px;box-shadow:var(--shadow)}.page-hero-art img{width:100%;height:100%;object-fit:cover}.split-hero{display:grid;grid-template-columns:1.4fr .6fr;gap:18px}.count-panel{background:var(--navy-dark);color:#fff;border-radius:20px;padding:24px}.count-panel h3{margin-top:0}.count-panel .big{font-size:46px;font-weight:900}.notice{padding:15px 18px;border:1px solid rgba(217,121,69,.25);background:var(--accent-soft);border-radius:14px;color:#7a4b2f}.tabs{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:20px}.tabs a{padding:8px 13px;border:1px solid var(--line);background:#fff;border-radius:var(--radius-pill)}.tabs a.active{background:var(--primary);color:#fff}.player-shell{background:var(--navy-dark);border-radius:22px;overflow:hidden;box-shadow:var(--shadow-hover)}.player-shell video{display:block;width:100%;aspect-ratio:16/9;background:#000}.watch-grid{display:grid;grid-template-columns:1.4fr .6fr;gap:24px}.watch-info{padding:22px 0}.watch-info h1{margin:0 0 8px}.side-stack{display:grid;gap:12px}.mini-video{display:grid;grid-template-columns:120px 1fr;gap:10px;padding:10px;background:#fff;border:1px solid var(--line);border-radius:14px}.mini-video img{width:120px;aspect-ratio:16/9;object-fit:cover;border-radius:10px}.mini-video h3{margin:2px 0;font-size:14px}.form-card{max-width:800px;background:#fff;border:1px solid var(--line);border-radius:18px;padding:24px}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}.field{display:grid;gap:7px}.field.full{grid-column:1/-1}.field input,.field textarea,.field select{padding:12px 13px;border:1px solid var(--line-strong);border-radius:12px;background:var(--bg-3)}.field textarea{min-height:140px}.legal{max-width:900px}.legal h2{margin-top:34px}.legal p,.legal li{color:var(--text-2)}.empty-state{text-align:center;padding:70px 20px;background:#fff;border:1px solid var(--line);border-radius:20px}.site-footer{background:var(--navy-dark);color:#c7d9e1;padding:54px 0 90px}.footer-grid{display:grid;grid-template-columns:1.6fr repeat(4,1fr);gap:26px}.footer-grid h3{color:#fff;font-size:14px}.footer-grid a{display:block;margin:8px 0;font-size:13px}.footer-grid p{max-width:340px;color:#9fb7c1;font-size:14px}.footer-brand b{color:#fff}.footer-brand img{width:46px;height:46px}.footer-bottom{display:flex;justify-content:space-between;gap:20px;border-top:1px solid rgba(255,255,255,.1);padding-top:20px;margin-top:32px;font-size:12px;color:#8fa9b4}.mobile-bottom{display:none}.mobile-only{display:none}
@media(max-width:1100px){.main-nav{display:none}.menu-open{display:grid}.mega-grid{grid-template-columns:repeat(4,1fr)}.hero-grid,.page-hero-grid,.app-showcase,.feature-banner{grid-template-columns:1fr}.hero-side{min-height:540px}.video-grid,.live-grid{grid-template-columns:repeat(3,1fr)}.featured-layout,.rank-layout,.two-col,.watch-grid{grid-template-columns:1fr}.bento{grid-template-columns:1fr 1fr;grid-template-rows:300px 220px 220px}.bento-card:first-child{grid-column:1/-1;grid-row:auto}.footer-grid{grid-template-columns:repeat(3,1fr)}.footer-grid>div:first-child{grid-column:1/-1}}
@media(max-width:760px){body{padding-bottom:66px}.wrap{width:min(100% - 24px,var(--wrap))}.top-note{display:none}.site-header{top:0}.nav-wrap{min-height:62px}.brand img{width:38px;height:38px}.brand small{display:none}.nav-actions .icon-btn:nth-child(2),.app-pill{display:none}.mega-grid{grid-template-columns:repeat(2,1fr)}.search-panel{top:62px;padding:16px 12px}.hero{padding:42px 0 28px}.hero-grid{gap:28px}.hero-copy h1{font-size:42px}.hero-copy p{font-size:16px}.hero-side{grid-template-columns:1fr;min-height:auto}.hero-visual{min-height:340px;grid-row:auto}.hero-panel{display:none}.section{padding:38px 0}.section-head{align-items:flex-start;flex-direction:column}.video-grid,.live-grid,.tutorial-grid{grid-template-columns:1fr 1fr}.anchor-list{grid-template-columns:1fr}.bento{display:grid;grid-template-columns:1fr;grid-template-rows:none}.bento-card:first-child{grid-column:auto}.bento-card{min-height:250px}.magazine-item{grid-template-columns:118px 1fr}.magazine-item img{width:118px}.feature-list{grid-template-columns:1fr}.page-hero{padding:38px 0}.page-hero-art{min-height:240px}.footer-grid{grid-template-columns:1fr 1fr}.footer-grid>div:first-child{grid-column:1/-1}.footer-bottom{flex-direction:column}.mobile-bottom{position:fixed;display:grid;grid-template-columns:repeat(5,1fr);left:0;right:0;bottom:0;background:rgba(255,255,255,.96);backdrop-filter:blur(14px);border-top:1px solid var(--line);z-index:70;padding-bottom:env(safe-area-inset-bottom)}.mobile-bottom a{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;height:62px;color:var(--text-2);font-size:18px}.mobile-bottom span{font-size:10px}.form-grid{grid-template-columns:1fr}.field.full{grid-column:auto}.split-hero{grid-template-columns:1fr}.desktop-only{display:none}.mobile-only{display:block}}
@media(max-width:520px){.video-grid,.live-grid{grid-template-columns:1fr}.video-track{grid-auto-columns:84%}.editor-item{grid-template-columns:105px 1fr}.editor-item img{width:105px}.anchor-card{grid-template-columns:72px 1fr}.anchor-card img{width:72px;height:72px}.rank-item{grid-template-columns:38px 1fr}.rank-item>span:last-child{display:none}.footer-grid{grid-template-columns:1fr 1fr}.feature-banner .copy{padding:24px}.feature-banner h2{font-size:30px}.watch-grid{gap:10px}}