:root{
--primary:#4A9BD4;--primary-2:#6DB7E6;--sky:#8CCCF0;--sky-light:#CBE9F8;--sky-soft:#EDF8FD;
--cream:#FFF9EE;--cream-2:#FFF4DF;--cream-3:#FDFBF6;--navy:#17344A;--navy-2:#244A64;--navy-soft:#4F6D80;
--accent:#EF8E68;--accent-2:#F2B36F;--accent-soft:#FFF0E8;--bg:#FFFDF8;--bg-blue:#F3FAFE;--bg-cream:#FFF9EE;
--surface:#FFFFFF;--surface-blue:#F8FCFF;--surface-cream:#FFFDF8;--text:#203542;--text-2:#5E7481;--text-3:#8A9AA3;
--line:rgba(74,155,212,.12);--line-strong:rgba(74,155,212,.24);--line-warm:rgba(239,142,104,.14);
--shadow:0 8px 28px rgba(31,88,124,.08);--shadow-hover:0 16px 42px rgba(31,88,124,.14);
--radius:12px;--radius-card:18px;--radius-large:26px;--radius-pill:999px;--wrap:1320px}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--text);font-family:Inter,"PingFang SC","Microsoft YaHei",system-ui,sans-serif;line-height:1.6}a{color:inherit;text-decoration:none}img{max-width:100%;display:block}button,input{font:inherit}button{cursor:pointer}h1,h2,h3,p{margin-top:0}h1{font-size:clamp(2.5rem,5vw,5rem);line-height:1.02;letter-spacing:-.04em}h2{font-size:clamp(1.8rem,3vw,3rem);line-height:1.12;letter-spacing:-.03em}h3{line-height:1.25}.wrap{width:min(var(--wrap),calc(100% - 40px));margin:auto}.narrow{max-width:920px}.skip-link{position:fixed;left:16px;top:-80px;background:#fff;padding:10px;z-index:1000}.skip-link:focus{top:16px}.top-note{background:var(--navy);color:#d8edf8;font-size:.9rem;padding:7px 0}.top-note a{color:#fff;text-decoration:underline;margin-left:10px}.site-header{position:sticky;top:0;z-index:50;background:rgba(255,249,238,.9);backdrop-filter:blur(18px);border-bottom:1px solid var(--line)}.nav-wrap{height:74px;display:flex;align-items:center;gap:24px}.brand{display:flex;align-items:center;gap:9px;min-width:max-content}.brand img{width:42px;height:42px;border-radius:13px}.brand span{display:grid;line-height:1}.brand b{font-size:1.12rem}.brand small{font-size:.62rem;letter-spacing:.12em;color:var(--text-2);margin-top:5px}.desktop-nav{display:flex;gap:3px;margin:auto}.desktop-nav a,.icon-btn{padding:9px 12px;border-radius:10px;color:var(--text-2);border:0;background:transparent}.desktop-nav a:hover,.desktop-nav a.active,.icon-btn:hover{background:var(--sky-soft);color:var(--primary)}.header-actions{display:flex;gap:4px}.mega-menu{position:absolute;left:0;right:0;background:rgba(255,253,248,.98);border-bottom:1px solid var(--line);box-shadow:var(--shadow)}.mega-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:10px;padding:18px 0}.mega-grid a{padding:12px;background:var(--surface);border-radius:12px}.search-modal{display:none}.search-modal.is-open{display:flex;position:fixed;inset:0;z-index:100;background:rgba(15,42,61,.48);align-items:flex-start;justify-content:center;padding:10vh 20px}.search-modal[hidden]{display:none !important}.search-dialog{width:min(760px,100%);background:var(--surface);border-radius:26px;padding:28px;box-shadow:0 30px 80px rgba(15,42,61,.28)}.dialog-head{display:flex;justify-content:space-between;gap:20px}.search-close{border:0;background:var(--sky-soft);width:44px;height:44px;border-radius:50%;font-size:1.5rem}.search-form label{display:block;font-weight:700;margin-bottom:9px}.search-line{display:flex;gap:8px}.search-line input{flex:1;border:1px solid var(--line-strong);border-radius:14px;padding:13px 15px;background:var(--bg)}.search-suggest{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}.search-suggest a,.horizontal-chips a,.tag-cloud a,.tag-cloud span{padding:8px 13px;border-radius:999px;background:var(--sky-soft);color:var(--navy-2)}body.search-open{overflow:hidden}
section{padding:72px 0}.home-hero,.page-hero{padding:84px 0;background:radial-gradient(circle at 86% 10%,rgba(140,204,240,.35),transparent 30%),linear-gradient(135deg,var(--cream),var(--sky-soft))}.hero-grid{display:grid;grid-template-columns:1.18fr .82fr;gap:54px;align-items:center}.hero-lead{font-size:1.15rem;color:var(--navy-2);max-width:760px}.eyebrow{display:inline-block;font-size:.78rem;font-weight:800;letter-spacing:.15em;color:var(--primary);text-transform:uppercase;margin-bottom:12px}.actions{display:flex;flex-wrap:wrap;gap:10px;margin:24px 0}.actions.centered{justify-content:center}.btn{display:inline-flex;align-items:center;justify-content:center;padding:11px 16px;border-radius:13px;border:1px solid transparent;font-weight:800}.btn.primary{background:var(--primary);color:#fff}.btn.ghost{background:var(--cream);border-color:var(--line-strong)}.btn.light{background:#fff;color:var(--navy)}.hero-search{display:flex;gap:8px;max-width:620px}.hero-search input{flex:1;padding:12px 14px;border:1px solid var(--line-strong);border-radius:13px;background:rgba(255,255,255,.8)}.hero-search button{border:0;border-radius:13px;background:var(--navy);color:#fff;padding:0 18px}.hero-stack{position:relative}.hero-stack>img,.hero-visual img{aspect-ratio:4/3;object-fit:cover;border-radius:32px;box-shadow:var(--shadow)}.floating-panel{position:absolute;right:-10px;bottom:-22px;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow);border-radius:18px;padding:18px;display:grid;gap:5px;min-width:210px}.floating-panel strong{color:var(--navy)}.floating-panel span{font-size:.9rem;color:var(--text-2)}.search-trends{padding:20px 0;background:var(--surface)}.pill-row{display:flex;align-items:center;gap:10px;overflow:auto}.pill-row a{white-space:nowrap;padding:7px 11px;border:1px solid var(--line);border-radius:999px}.channel-strip{padding:18px 0;background:var(--bg-blue);border-block:1px solid var(--line)}.horizontal-chips{display:flex;gap:8px;overflow:auto}.horizontal-chips a{white-space:nowrap}.section-head{display:flex;align-items:end;justify-content:space-between;gap:28px;margin-bottom:28px}.section-head h2{margin-bottom:8px}.section-head p{color:var(--text-2);max-width:760px;margin-bottom:0}.text-link{font-weight:800;color:var(--primary);white-space:nowrap}.tint-blue{background:var(--bg-blue)}.tint-cream{background:var(--bg-cream)}.dark{background:var(--navy);color:#eaf7fd}.dark .eyebrow{color:var(--sky)}.dark .section-head p,.dark p,.dark small{color:#b9d2df}.dark .text-link{color:var(--sky)}.dark .video-card,.dark .live-card,.dark .anchor-card{background:#193d55;border-color:rgba(255,255,255,.08)}.dark .video-card p,.dark .live-card p,.dark .anchor-card p{color:#c4dae5}.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}.stream-2,.discussion-2,.dual-flow{display:grid;grid-template-columns:1fr 1fr;gap:20px}.video-card,.live-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden}.video-card:hover,.live-card:hover{box-shadow:var(--shadow-hover)}.media-frame{position:relative;overflow:hidden;background:var(--sky-soft)}.ratio-16-9{aspect-ratio:16/9}.media-frame img{width:100%;height:100%;object-fit:cover;transition:.2s transform}.video-card:hover .media-frame img{transform:scale(1.02)}.play-dot{position:absolute;left:14px;bottom:13px;width:36px;height:36px;border-radius:50%;display:grid;place-items:center;background:rgba(255,255,255,.9);color:var(--navy);font-size:.8rem;transition:.2s transform}.video-card:hover .play-dot{transform:scale(1.06)}.duration{position:absolute;right:12px;bottom:12px;background:rgba(15,42,61,.82);color:#fff;padding:3px 7px;border-radius:7px;font-size:.75rem}.card-body{padding:16px}.card-body h3{font-size:1.04rem;margin:10px 0 8px}.card-body p{font-size:.9rem;color:var(--text-2);margin-bottom:14px}.meta-row,.byline,.topic-foot{display:flex;justify-content:space-between;gap:12px;align-items:center;font-size:.78rem;color:var(--text-2)}.chip{display:inline-flex;background:var(--sky-soft);color:var(--primary);padding:4px 8px;border-radius:999px;font-weight:700}.byline a{color:var(--primary);font-weight:700}.compact-row{display:grid;grid-template-columns:auto 120px 1fr;gap:12px;align-items:center;padding:12px 0;border-bottom:1px solid var(--line)}.compact-row img{width:120px;aspect-ratio:16/9;object-fit:cover;border-radius:11px}.compact-row h3{font-size:.95rem;margin:4px 0}.compact-row span,.compact-row small{color:var(--text-2);font-size:.75rem}.rank{font-size:1.45rem;color:var(--primary);width:34px}.ranking-list .compact-row:first-child .rank{color:var(--accent)}.spotlight{display:grid;grid-template-columns:1.35fr .65fr;gap:24px;align-items:stretch}.editor-note{padding:30px;border-radius:var(--radius-large);background:linear-gradient(145deg,var(--cream-2),var(--sky-soft));border:1px solid var(--line)}.video-card.large .card-body h3{font-size:1.35rem}.split{display:grid;grid-template-columns:1.2fr .8fr;gap:42px;align-items:start}.rank-feature,.trend-note{background:var(--surface);border-radius:24px;padding:18px;border:1px solid var(--line)}.rank-feature img,.trend-note img{border-radius:17px;aspect-ratio:4/3;object-fit:cover;margin-bottom:16px}.masonry-like{columns:3;column-gap:18px}.masonry-like .video-card{break-inside:avoid;margin-bottom:18px}.masonry-like .video-card:nth-child(3n+2) .media-frame{aspect-ratio:4/3}.rail,.anchor-rail{display:flex;gap:16px;overflow-x:auto;padding-bottom:10px;scroll-snap-type:x proximity}.rail-card{min-width:310px;scroll-snap-align:start}.feature-row{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}.feature-row.reverse>img{order:2}.feature-row>img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:28px}.mini-list{margin-top:18px}.bento-grid{display:grid;grid-template-columns:repeat(12,1fr);grid-auto-rows:minmax(180px,auto);gap:18px}.bento{grid-column:span 4}.bento.b1{grid-column:span 7}.bento.b2{grid-column:span 5}.bento.b3{grid-column:span 4}.bento.b4{grid-column:span 4}.bento.b5{grid-column:span 4}.live-stage-grid{display:grid;grid-template-columns:1.25fr .75fr;gap:20px}.stage-side{display:grid;grid-template-columns:1fr 1fr;gap:14px}.live-badge{position:absolute;left:12px;top:12px;background:var(--accent);color:#fff;padding:5px 9px;border-radius:999px;font-size:.75rem;font-weight:900}.anchor-card{display:grid;grid-template-columns:92px 1fr;gap:14px;background:var(--surface);border:1px solid var(--line);border-radius:18px;padding:14px}.anchor-card img{width:92px;height:92px;border-radius:50%;object-fit:cover}.anchor-card h3{margin:7px 0 5px}.anchor-card p{font-size:.86rem;color:var(--text-2)}.anchor-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}.anchor-rail .anchor-card{min-width:390px}.center-head{text-align:center;max-width:980px;margin:auto}.tag-cloud{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px}.tag-cloud.big{justify-content:center}.tag-cloud.big a,.tag-cloud.big span{font-size:1rem;padding:10px 15px}.stack-list{display:grid;gap:4px}.discussion-card{display:grid;grid-template-columns:44px 1fr;gap:13px;padding:18px;border:1px solid var(--line);border-radius:18px;background:var(--surface)}.avatar{width:44px;height:44px;border-radius:50%;display:grid;place-items:center;background:var(--sky-light);color:var(--navy);font-weight:900}.discussion-card h3{margin:5px 0 8px}.discussion-card p{color:var(--text-2);font-size:.9rem}.topic-foot{border-top:1px solid var(--line);padding-top:10px}.topic-focus{display:grid;grid-template-columns:1.15fr .85fr;gap:34px;align-items:center;background:linear-gradient(135deg,var(--navy),var(--navy-2));color:#fff;border-radius:28px;padding:36px}.topic-focus p{color:#d3e6ef}.topic-points{display:grid;gap:10px}.topic-points span{padding:12px 15px;background:rgba(255,255,255,.09);border-radius:12px}.timeline{display:grid;gap:12px}.trend-bars{display:grid;gap:11px}.trend-bars a{display:grid;grid-template-columns:150px 1fr;align-items:center;gap:15px}.trend-bars i{height:9px;border-radius:999px;background:linear-gradient(90deg,var(--primary) var(--w),var(--sky-soft) var(--w));display:block}.magazine-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:18px}.magazine-grid>.video-card:nth-child(1),.magazine-grid>.video-card:nth-child(2){grid-column:span 3}.magazine-grid>.video-card:nth-child(n+3){grid-column:span 2}.tip-grid,.steps,.feature-cards{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}.tip-grid>div,.steps article,.feature-cards article{padding:22px;border:1px solid var(--line);background:var(--surface);border-radius:18px}.tip-grid span,.steps b{font-size:1.6rem;color:var(--primary)}.app-grid{display:grid;grid-template-columns:1fr .8fr;gap:50px;align-items:center}.app-grid img{max-height:460px;margin:auto;border-radius:28px}.compare{display:grid;grid-template-columns:1fr 1fr;gap:20px}.compare article{display:grid;grid-template-columns:180px 1fr;gap:18px;background:var(--surface);border:1px solid var(--line);border-radius:22px;padding:18px}.compare article img{width:180px;height:100%;min-height:160px;object-fit:cover;border-radius:15px}.page-hero{padding:66px 0}.page-hero h1{font-size:clamp(2.4rem,4vw,4rem)}.channel-bento{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}.channel-tile{min-height:220px;position:relative;border-radius:20px;overflow:hidden;padding:20px;display:flex;flex-direction:column;justify-content:end;color:#fff;background:var(--navy)}.channel-tile img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.5}.channel-tile:after{content:"";position:absolute;inset:0;background:linear-gradient(transparent,rgba(15,42,61,.92))}.channel-tile span,.channel-tile small{position:relative;z-index:1}.channel-tile span{font-size:1.25rem;font-weight:900}.channel-tile small{color:#e7f4fa}.filter-chips,.tab-bar{display:flex;flex-wrap:wrap;gap:8px}.filter-chips button,.tab-bar button{border:1px solid var(--line-strong);background:var(--surface);padding:8px 12px;border-radius:999px}.filter-chips button.is-active,.tab-bar button[aria-selected="true"]{background:var(--primary);color:#fff}.filter-head{align-items:center}.watch-grid{display:grid;grid-template-columns:1.4fr .6fr;gap:28px}.video-player{background:#0f2a3d;border-radius:22px;overflow:hidden}.video-player video{width:100%;display:block;aspect-ratio:16/9}.watch-info{padding:24px 0}.watch-grid aside{background:var(--bg-blue);border-radius:20px;padding:22px}.notice{padding:16px;background:var(--sky-soft);border:1px solid var(--line);border-radius:14px;color:var(--navy-2)}.notice.strong{padding:28px;text-align:center}.search-page{padding-bottom:30px}.page-search{margin-top:24px}.empty-state{grid-column:1/-1;padding:50px;text-align:center}.not-found{min-height:58vh;display:grid;place-items:center}.faq-list{display:grid;gap:10px}.faq-item{border:1px solid var(--line);background:var(--surface);border-radius:16px;overflow:hidden}.faq-question{width:100%;display:flex;justify-content:space-between;gap:20px;text-align:left;border:0;background:transparent;padding:17px 19px;font-weight:800}.faq-answer{padding:0 19px 17px;color:var(--text-2)}.site-footer{background:var(--navy);color:#d6e8f1;padding:58px 0 90px}.footer-grid{display:grid;grid-template-columns:1.5fr repeat(4,1fr);gap:36px}.site-footer h3{color:#fff}.site-footer a{display:block;margin:7px 0}.brand-light{color:#fff}.brand-light small{color:#b9d2df}.footer-bottom{display:flex;justify-content:space-between;gap:18px;padding-top:28px;margin-top:28px;border-top:1px solid rgba(255,255,255,.1);font-size:.8rem}.mobile-bottom{display:none}.back-top{position:fixed;right:20px;bottom:90px;width:44px;height:44px;border:0;border-radius:50%;background:var(--navy);color:#fff;box-shadow:var(--shadow)}
@media(max-width:1050px){.desktop-nav{display:none}.mega-grid{grid-template-columns:repeat(4,1fr)}.grid-4{grid-template-columns:repeat(2,1fr)}.hero-grid,.feature-row,.split,.app-grid,.watch-grid{grid-template-columns:1fr}.feature-row.reverse>img{order:0}.live-stage-grid{grid-template-columns:1fr}.channel-bento{grid-template-columns:repeat(2,1fr)}.footer-grid{grid-template-columns:repeat(3,1fr)}.footer-grid>div:first-child{grid-column:1/-1}.masonry-like{columns:2}.compact-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:720px){.wrap{width:min(100% - 24px,var(--wrap))}.top-note{display:none}.nav-wrap{height:64px}.brand small,.header-actions a{display:none}.header-actions{margin-left:auto}.header-actions .icon-btn{padding:8px}.mega-grid{grid-template-columns:repeat(2,1fr)}section{padding:50px 0}.home-hero,.page-hero{padding:54px 0}.hero-grid{gap:28px}.hero-stack{padding-bottom:20px}.floating-panel{position:relative;right:auto;bottom:auto;margin:-34px 14px 0}.section-head{align-items:flex-start;flex-direction:column}.grid-3,.grid-4,.stream-2,.discussion-2,.dual-flow,.anchor-grid,.compare,.tip-grid,.steps,.feature-cards{grid-template-columns:1fr}.grid-3{grid-template-columns:repeat(2,1fr)}.grid-3 .video-card:nth-child(3n){grid-column:1/-1}.spotlight{grid-template-columns:1fr}.masonry-like{columns:1}.bento-grid{grid-template-columns:1fr}.bento,.bento.b1,.bento.b2,.bento.b3,.bento.b4,.bento.b5{grid-column:auto}.stage-side{grid-template-columns:1fr}.rail-card{min-width:78vw}.anchor-rail .anchor-card{min-width:84vw}.magazine-grid{grid-template-columns:1fr}.magazine-grid>.video-card:nth-child(n){grid-column:auto}.channel-bento{grid-template-columns:1fr 1fr}.topic-focus{grid-template-columns:1fr;padding:24px}.compare article{grid-template-columns:110px 1fr}.compare article img{width:110px;min-height:130px}.footer-grid{grid-template-columns:1fr 1fr}.footer-grid>div:first-child{grid-column:1/-1}.footer-bottom{flex-direction:column}.mobile-bottom{display:grid;grid-template-columns:repeat(5,1fr);position:fixed;left:0;right:0;bottom:0;background:rgba(255,253,248,.96);backdrop-filter:blur(16px);border-top:1px solid var(--line);z-index:40}.mobile-bottom a{text-align:center;padding:12px 4px;font-size:.82rem}.site-footer{padding-bottom:110px}.compact-row{grid-template-columns:auto 90px 1fr}.compact-row img{width:90px}.search-line{flex-direction:column}.hero-search{flex-direction:column}.hero-search button{padding:12px}.trend-bars a{grid-template-columns:115px 1fr}}
@media(max-width:480px){.grid-3{grid-template-columns:1fr}.grid-3 .video-card:nth-child(3n){grid-column:auto}.channel-bento{grid-template-columns:1fr}.header-actions .icon-btn:nth-last-child(2){display:none}.compare article{grid-template-columns:1fr}.compare article img{width:100%;height:180px}.footer-grid{grid-template-columns:1fr 1fr}}