: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:1.65}body.search-open{overflow:hidden}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-inline:auto}.sr-only,.skip-link:not(:focus){position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.skip-link:focus{position:fixed;top:8px;left:8px;z-index:1000;background:#fff;padding:10px 14px;border-radius:8px}.top-notice{background:var(--navy);color:#eaf6fc;font-size:13px}.top-notice .wrap{display:flex;justify-content:space-between;padding:7px 0}.top-notice a{color:#fff;text-decoration:underline;text-underline-offset:3px}.site-header{position:sticky;top:0;z-index:80;background:rgba(255,249,238,.92);backdrop-filter:blur(16px);border-bottom:1px solid var(--line);transition:.2s}.site-header.scrolled{box-shadow:var(--shadow);background:rgba(255,253,248,.97)}.header-inner{height:76px;display:flex;align-items:center;gap:30px}.brand{display:flex;align-items:center;gap:10px;min-width:max-content}.brand img{width:42px;height:42px;border-radius:14px;object-fit:cover}.brand span{display:grid;line-height:1.15}.brand b{font-size:18px}.brand small{font-size:10px;letter-spacing:.14em;color:var(--text-2)}.desktop-nav{display:flex;align-items:center;gap:4px;flex:1}.desktop-nav a{padding:9px 12px;border-radius:var(--radius-pill);font-size:15px;color:var(--text-2)}.desktop-nav a:hover,.desktop-nav a.active{background:var(--sky-soft);color:var(--primary);font-weight:700}.header-actions{display:flex;align-items:center;gap:8px}.icon-button,.menu-toggle,.modal-close{border:0;background:transparent;color:var(--text);cursor:pointer}.icon-button{display:inline-flex;gap:6px;align-items:center;padding:8px 10px;border-radius:var(--radius-pill)}.icon-button:hover{background:var(--surface)}.button{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 18px;border-radius:var(--radius-pill);font-weight:700;border:1px solid transparent;cursor:pointer}.button.primary{background:var(--primary);color:#fff}.button.secondary{background:var(--cream);border-color:var(--line-strong);color:var(--navy)}.button.ghost{background:transparent;border-color:rgba(255,255,255,.35);color:#fff}.button.live{background:var(--accent);color:#fff}.button.small{padding:8px 13px;font-size:14px}.mega-strip{border-top:1px solid var(--line);background:rgba(255,255,255,.58)}.mega-strip .wrap{display:flex;gap:20px;overflow:auto;padding:8px 0;scrollbar-width:none}.mega-strip a{white-space:nowrap;font-size:12px;color:var(--text-2)}.menu-toggle{display:none;width:38px;height:38px;padding:8px}.menu-toggle span:not(.sr-only){display:block;height:2px;background:var(--text);margin:4px 0}.mobile-menu{background:var(--surface);border-top:1px solid var(--line);padding:16px 20px;grid-template-columns:repeat(2,1fr);gap:8px}.mobile-menu:not([hidden]){display:grid}.mobile-menu a{padding:10px 12px;background:var(--sky-soft);border-radius:10px}.search-modal{display:none;position:fixed;inset:0;z-index:200;background:rgba(15,42,61,.48);padding:90px 20px 20px;align-items:flex-start;justify-content:center}.search-modal.is-open{display:flex}.search-modal[hidden]{display:none!important}.search-dialog{width:min(760px,100%);background:var(--cream-3);border:1px solid rgba(255,255,255,.8);border-radius:28px;box-shadow:0 30px 80px rgba(15,42,61,.25);padding:28px}.search-dialog-head{display:flex;justify-content:space-between;align-items:start}.modal-close{font-size:32px;line-height:1;width:42px;height:42px;border-radius:50%;background:var(--surface)}.search-box{display:flex;background:#fff;border:1px solid var(--line-strong);padding:6px;border-radius:16px;margin:20px 0}.search-box input{flex:1;border:0;outline:0;padding:12px;background:transparent}.search-box button{border:0;background:var(--primary);color:#fff;padding:0 22px;border-radius:12px;cursor:pointer}.search-suggestions b{display:block;margin-bottom:8px}.chip-rail{display:flex;gap:9px;overflow:auto;padding:4px 0 6px;scrollbar-width:none}.chip{display:inline-flex;white-space:nowrap;align-items:center;padding:8px 13px;border:1px solid var(--line-strong);background:rgba(255,255,255,.74);border-radius:var(--radius-pill);font-size:13px;color:var(--navy-2)}.chip:hover{border-color:var(--primary);color:var(--primary)}.chip.small{padding:4px 8px;font-size:11px}.eyebrow{display:block;font-size:12px;font-weight:800;letter-spacing:.13em;color:var(--primary);text-transform:uppercase;margin-bottom:8px}.hero-home,.page-hero{background:linear-gradient(135deg,var(--cream) 0%,#fffdf8 48%,var(--sky-soft) 100%);overflow:hidden;position:relative}.hero-home:after,.page-hero:after{content:"";position:absolute;width:420px;height:420px;border-radius:50%;background:rgba(140,204,240,.15);right:-150px;top:-180px;pointer-events:none}.hero-grid{display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:54px;align-items:center;padding:72px 0}.hero-copy{position:relative;z-index:1}.hero-copy h1{font-size:clamp(42px,6vw,74px);line-height:1.06;letter-spacing:-.045em;margin:0 0 24px;color:var(--navy);max-width:760px}.page-hero .hero-copy h1{font-size:clamp(38px,5vw,64px)}.hero-copy>p{font-size:18px;color:var(--text-2);max-width:720px;margin:0 0 28px}.hero-actions{display:flex;gap:12px;flex-wrap:wrap}.hero-search{margin-top:26px;max-width:620px}.hero-search .search-box{box-shadow:var(--shadow)}.hero-media{position:relative;min-width:0}.hero-media>img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:32px;box-shadow:var(--shadow-hover)}.hero-float{position:absolute;right:-18px;bottom:22px;width:min(300px,70%);background:rgba(255,255,255,.92);backdrop-filter:blur(12px);padding:18px;border-radius:20px;box-shadow:var(--shadow)}.hero-note{margin-top:20px;border-left:3px solid var(--accent);padding:10px 14px;background:var(--accent-soft);border-radius:0 12px 12px 0;color:var(--navy-2)}section{padding:72px 0}.section-soft{background:var(--bg-blue)}.section-cream{background:var(--bg-cream)}.section-white{background:#fff}.section-dark{background:var(--navy);color:#eef8fd}.section-dark .section-head p,.section-dark .byline,.section-dark small,.section-dark .kicker{color:#b9d4e3}.section-dark .eyebrow{color:var(--sky)}.section-dark .text-link{color:#fff}.section-head{display:flex;justify-content:space-between;align-items:end;gap:30px;margin-bottom:28px}.section-head h2{font-size:clamp(30px,4vw,48px);line-height:1.1;letter-spacing:-.03em;margin:0;color:inherit}.section-head p{margin:10px 0 0;max-width:760px;color:var(--text-2)}.section-head.compact h2{font-size:32px}.text-link{color:var(--primary);font-weight:700;white-space:nowrap}.focus-grid{display:grid;grid-template-columns:1.3fr .7fr;gap:22px}.editor-grid{display:grid;grid-template-columns:1.4fr repeat(2,1fr);grid-auto-rows:1fr;gap:16px}.editor-grid .video-card:first-child{grid-row:span 2}.top-split{display:grid;grid-template-columns:1.2fr .8fr;gap:30px}.rail{display:grid;grid-auto-flow:column;grid-auto-columns:minmax(290px,34%);gap:16px;overflow:auto;padding-bottom:8px;scroll-snap-type:x proximity}.rail>*{scroll-snap-align:start}.video-grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}.video-grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}.feed-stack{display:grid;gap:12px}.feature-split{display:grid;grid-template-columns:1fr 1fr;gap:42px;align-items:center}.feature-split.reverse>img{order:2}.feature-split>img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:28px}.bento-grid{display:grid;grid-template-columns:2fr 1fr 1fr;grid-template-rows:repeat(2,220px);gap:14px}.bento-card{position:relative;overflow:hidden;border-radius:24px;min-height:180px}.bento-card:first-child{grid-row:span 2}.bento-card img{width:100%;height:100%;object-fit:cover}.bento-card .overlay{position:absolute;inset:auto 0 0;padding:24px;color:#fff;background:linear-gradient(transparent,rgba(15,42,61,.88))}.live-stage{display:grid;grid-template-columns:1.35fr .65fr;gap:20px}.live-stage-main{position:relative;border-radius:28px;overflow:hidden;min-height:420px}.live-stage-main img{width:100%;height:100%;object-fit:cover}.live-stage-main .overlay{position:absolute;inset:auto 0 0;padding:30px;color:#fff;background:linear-gradient(transparent,rgba(15,42,61,.92))}.avatar-rail{display:grid;grid-auto-flow:column;grid-auto-columns:150px;gap:14px;overflow:auto}.avatar-mini{text-align:center;padding:14px}.avatar-mini img{width:82px;height:82px;border-radius:50%;object-fit:cover;margin:0 auto 10px}.anchor-layout{display:grid;grid-template-columns:2fr 1fr;gap:28px}.discussion-columns{display:grid;grid-template-columns:1fr 1fr;gap:18px}.timeline{position:relative;display:grid;gap:18px;padding-left:28px}.timeline:before{content:"";position:absolute;left:8px;top:6px;bottom:6px;width:2px;background:var(--line-strong)}.timeline-item{position:relative}.timeline-item:before{content:"";position:absolute;width:12px;height:12px;border-radius:50%;background:var(--primary);left:-25px;top:8px}.tags-trends{display:grid;grid-template-columns:.75fr 1.25fr;gap:40px}.tag-cloud{display:flex;flex-wrap:wrap;gap:10px;align-content:start}.trend-bars{display:grid;gap:14px}.trend-bar{display:grid;grid-template-columns:130px 1fr 70px;gap:12px;align-items:center}.trend-bar .bar{height:10px;background:var(--sky-light);border-radius:99px;overflow:hidden}.trend-bar .bar span{display:block;height:100%;background:var(--primary);border-radius:99px}.editorial-note{display:grid;grid-template-columns:.7fr 1.3fr;gap:30px;align-items:start;padding:34px;border:1px solid var(--line);border-radius:28px;background:linear-gradient(120deg,var(--cream),var(--surface))}.creator-story{display:grid;grid-template-columns:160px 1fr;gap:22px;align-items:center}.creator-story img{width:160px;height:160px;border-radius:26px;object-fit:cover}.app-showcase{display:grid;grid-template-columns:.8fr 1.2fr;gap:50px;align-items:center}.app-showcase img{max-height:620px;width:100%;object-fit:contain}.steps{counter-reset:step;display:grid;grid-template-columns:repeat(4,1fr);gap:16px}.step{counter-increment:step;padding:24px;border-top:3px solid var(--sky);background:var(--surface);border-radius:0 0 18px 18px}.step:before{content:"0" counter(step);font-size:12px;font-weight:800;color:var(--primary)}.compare-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.compare-card{padding:26px;border:1px solid var(--line);border-radius:22px;background:var(--surface-cream)}.video-card,.live-card,.topic-card,.tutorial-card{background:var(--surface);border-radius:var(--radius-card);overflow:hidden;border:1px solid var(--line);transition:transform .2s,box-shadow .2s,border-color .2s}.video-card:hover,.live-card:hover,.topic-card:hover,.tutorial-card:hover{transform:translateY(-2px);box-shadow:var(--shadow);border-color:var(--line-strong)}.media-frame,.live-visual{position:relative;display:block;overflow:hidden}.media-frame{aspect-ratio:16/9}.media-frame img,.live-visual img{width:100%;height:100%;object-fit:cover;transition:transform .25s}.video-card:hover .media-frame img{transform:scale(1.02)}.play-icon{position:absolute;left:16px;bottom:14px;width:42px;height:42px;border-radius:50%;display:grid;place-items:center;background:rgba(255,255,255,.9);color:var(--navy);font-size:13px;transition:.2s}.video-card:hover .play-icon{transform:scale(1.06)}.duration{position:absolute;right:10px;bottom:10px;background:rgba(15,42,61,.78);color:#fff;font-size:11px;padding:3px 7px;border-radius:7px}.card-body{padding:18px}.card-body h3,.topic-card h3,.media-item h3,.tutorial-card h3{margin:10px 0 8px;line-height:1.35}.card-body p,.topic-card p,.media-item p,.tutorial-card p{color:var(--text-2);font-size:14px;margin:0 0 12px}.meta-row,.byline{display:flex;justify-content:space-between;align-items:center;gap:10px}.meta-row{font-size:12px;color:var(--text-3)}.byline{font-size:12px;color:var(--text-2);margin-top:12px}.compact-video{display:grid;grid-template-columns:auto 112px 1fr;gap:14px;align-items:center;padding:12px 0;border-bottom:1px solid var(--line)}.compact-video img{width:112px;aspect-ratio:16/9;object-fit:cover;border-radius:12px}.compact-video .rank{font-size:20px;color:var(--primary)}.compact-video h3{font-size:15px;margin:4px 0}.compact-video span,.compact-video small{font-size:11px;color:var(--text-2)}.live-visual{aspect-ratio:16/10}.live-badge{position:absolute;left:12px;top:12px;background:var(--accent);color:#fff;font-weight:800;font-size:11px;padding:5px 9px;border-radius:99px}.kicker{font-size:11px;color:var(--text-2)}.anchor-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}.anchor-card{display:grid;grid-template-columns:118px 1fr;gap:18px;align-items:start;padding:20px;background:rgba(255,255,255,.72);border:1px solid var(--line);border-radius:22px}.anchor-card .avatar{width:118px;height:118px;border-radius:50%;object-fit:cover}.anchor-card h3{margin:4px 0}.anchor-card p{font-size:14px;color:var(--text-2);margin:4px 0 8px}.status-dot{color:var(--accent);font-weight:700}.topic-card{padding:20px}.topic-user{display:flex;align-items:center;gap:10px}.topic-user small{display:block;color:var(--text-3)}.avatar-letter{width:38px;height:38px;border-radius:50%;display:grid;place-items:center;background:var(--sky-soft);color:var(--primary);font-weight:800}.topic-related{display:flex;gap:8px;align-items:center;padding:10px 12px;background:var(--sky-soft);border-radius:12px;font-size:12px}.topic-related span{color:var(--primary)}.media-list{display:grid;gap:18px}.media-item{display:grid;grid-template-columns:280px 1fr;gap:24px;padding:18px;border:1px solid var(--line);border-radius:24px;background:var(--surface)}.media-item img{width:100%;height:100%;min-height:180px;object-fit:cover;border-radius:16px}.media-item blockquote{margin:12px 0 0;padding-left:14px;border-left:2px solid var(--accent);color:var(--text-2);font-size:13px}.tutorial-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}.tutorial-card{display:grid;grid-template-columns:180px 1fr;gap:0}.tutorial-card img{width:100%;height:100%;object-fit:cover}.tutorial-card>div{padding:18px}.faq-wrap{max-width:960px;margin-inline:auto}.faq-list{display:grid;gap:10px}.faq-item{background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:0 18px}.faq-item summary{cursor:pointer;list-style:none;padding:17px 0;font-weight:700;display:flex;justify-content:space-between;gap:15px}.faq-item summary::-webkit-details-marker{display:none}.faq-item p{margin:0 0 18px;color:var(--text-2)}.stat-strip{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:24px;overflow:hidden}.stat-item{background:var(--surface);padding:22px}.stat-item strong{font-size:30px;color:var(--primary);display:block}.notice-card{padding:22px;border-radius:20px;background:var(--accent-soft);border:1px solid var(--line-warm)}.empty-state{padding:42px;border:1px dashed var(--line-strong);border-radius:24px;text-align:center;background:var(--surface-blue)}.player-shell{background:var(--navy);padding:18px;border-radius:28px}.player-shell video{width:100%;aspect-ratio:16/9;background:#0f2a3d;border-radius:18px}.search-results{display:grid;gap:14px}.search-result{display:grid;grid-template-columns:180px 1fr;gap:18px;padding:14px;border:1px solid var(--line);border-radius:18px;background:var(--surface)}.search-result img{width:180px;aspect-ratio:16/9;object-fit:cover;border-radius:12px}.rank-list{display:grid;gap:0}.rank-row{display:grid;grid-template-columns:70px 1fr 130px 130px;gap:16px;align-items:center;padding:16px 10px;border-bottom:1px solid var(--line)}.rank-row strong{font-size:22px;color:var(--primary)}.rank-row span{font-size:12px;color:var(--text-2)}.filter-tabs{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:22px}.tab-button{border:1px solid var(--line-strong);background:#fff;padding:8px 13px;border-radius:99px;cursor:pointer}.tab-button.active{background:var(--navy);color:#fff}.prose-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}.prose-card{padding:26px;border:1px solid var(--line);border-radius:22px;background:var(--surface)}.prose-card h3{margin-top:0}.prose-card p{color:var(--text-2)}.callout{padding:26px;border-radius:24px;background:var(--sky-soft);border-left:4px solid var(--primary)}.site-footer{background:var(--navy);color:#dcecf5;padding:64px 0 92px}.footer-grid{display:grid;grid-template-columns:1.6fr repeat(4,1fr);gap:34px}.footer-grid h3{color:#fff;font-size:14px}.footer-grid a{display:block;color:#c7dce7;font-size:13px;padding:4px 0}.footer-brand p{color:#b9d4e3;max-width:430px}.brand.invert b{color:#fff}.brand.invert small{color:#b9d4e3}.footer-bottom{display:flex;justify-content:space-between;margin-top:38px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);font-size:12px;color:#a8c3d2}.mobile-bottom-nav{display:none}.back-top{position:fixed;right:18px;bottom:22px;width:42px;height:42px;border:0;border-radius:50%;background:var(--navy);color:#fff;box-shadow:var(--shadow);cursor:pointer;opacity:0;pointer-events:none;transition:.2s;z-index:70}.back-top.visible{opacity:1;pointer-events:auto}
@media (max-width:1100px){.desktop-nav{display:none}.menu-toggle{display:block}.hero-grid,.focus-grid,.top-split,.live-stage,.anchor-layout,.tags-trends,.app-showcase{grid-template-columns:1fr}.hero-media{max-width:760px}.video-grid-4{grid-template-columns:repeat(2,1fr)}.editor-grid{grid-template-columns:1.2fr 1fr}.editor-grid .video-card:first-child{grid-row:span 2}.bento-grid{grid-template-columns:1.4fr 1fr}.bento-card:first-child{grid-row:span 2}.footer-grid{grid-template-columns:1.4fr repeat(2,1fr)}.steps{grid-template-columns:repeat(2,1fr)}}
@media (max-width:760px){body{padding-bottom:64px}.wrap{width:min(100% - 28px,var(--wrap))}.top-notice .wrap{display:block;padding:6px 0}.top-notice a{margin-left:8px}.header-inner{height:64px}.brand img{width:36px;height:36px}.brand small{display:none}.header-actions .icon-button span:last-child,.header-actions>a.icon-button{display:none}.mega-strip{display:none}.hero-grid{padding:46px 0;gap:30px}.hero-copy h1{font-size:42px}.hero-copy>p{font-size:16px}.hero-float{right:8px;bottom:8px;width:72%;padding:12px}.search-modal{padding:16px;align-items:center}.search-dialog{padding:20px}.section-head{align-items:start;display:block}.section-head .text-link{display:inline-block;margin-top:10px}section{padding:50px 0}.video-grid-3,.video-grid-4,.discussion-columns,.anchor-grid,.tutorial-grid,.prose-grid,.compare-grid{grid-template-columns:1fr}.rail{grid-auto-columns:82%}.editor-grid{display:flex;overflow:auto;gap:14px}.editor-grid>*{min-width:82%}.bento-grid{display:flex;overflow:auto}.bento-card{min-width:82%;height:260px}.feature-split,.feature-split.reverse{grid-template-columns:1fr;gap:20px}.feature-split.reverse>img{order:0}.avatar-rail{grid-auto-columns:130px}.anchor-card{grid-template-columns:82px 1fr}.anchor-card .avatar{width:82px;height:82px}.media-item,.tutorial-card,.search-result{grid-template-columns:1fr}.media-item img,.search-result img{width:100%}.creator-story{grid-template-columns:96px 1fr}.creator-story img{width:96px;height:96px}.stat-strip{grid-template-columns:repeat(2,1fr)}.steps{display:flex;overflow:auto}.step{min-width:76%}.rank-row{grid-template-columns:42px 1fr}.rank-row span:nth-last-child(-n+2){display:none}.footer-grid{grid-template-columns:1fr 1fr}.footer-brand{grid-column:1/-1}.footer-bottom{display:block}.mobile-bottom-nav{position:fixed;left:0;right:0;bottom:0;height:64px;z-index:90;display:grid;grid-template-columns:repeat(5,1fr);background:rgba(255,253,248,.96);backdrop-filter:blur(12px);border-top:1px solid var(--line)}.mobile-bottom-nav a{display:grid;place-items:center;align-content:center;font-size:17px;color:var(--text-2)}.mobile-bottom-nav span{font-size:10px}.back-top{bottom:76px}.site-footer{padding-bottom:40px}}
@media (prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important;animation:none!important}}