: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,-apple-system,sans-serif;line-height:1.65}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}.skip-link{position:fixed;left:12px;top:-80px;z-index:10000;background:#fff;padding:10px 16px;border-radius:8px}.skip-link:focus{top:12px}.top-note{padding:7px 20px;text-align:center;background:var(--cream-2);color:var(--navy-2);font-size:13px;border-bottom:1px solid var(--line-warm)}.site-header{position:sticky;top:0;z-index:900;background:rgba(255,249,238,.9);backdrop-filter:blur(16px);border-bottom:1px solid var(--line)}.header-inner{min-height:72px;display:flex;align-items:center;gap:28px}.brand{display:flex;align-items:center;gap:10px;font-weight:900;font-size:20px}.brand img{width:40px;height:40px;border-radius:12px;object-fit:cover}.main-nav{display:flex;gap:4px;flex:1}.main-nav a{padding:9px 12px;border-radius:999px;color:var(--navy-2)}.main-nav a:hover,.main-nav a[aria-current="page"]{background:var(--sky-soft);color:var(--primary);font-weight:700}.header-actions{display:flex;gap:8px}.icon-btn{border:1px solid var(--line-strong);background:rgba(255,255,255,.72);padding:8px 11px;border-radius:999px;color:var(--navy);cursor:pointer}.icon-btn:hover{border-color:var(--primary);color:var(--primary)}.mobile-menu{background:var(--surface);border-top:1px solid var(--line)}.mobile-menu[hidden]{display:none}.mobile-menu .wrap{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;padding:16px 0}.mobile-menu a{padding:10px 12px;background:var(--sky-soft);border-radius:12px}.search-modal{display:none;position:fixed;inset:0;z-index:2000;background:rgba(15,42,61,.62);align-items:flex-start;justify-content:center;padding:9vh 20px}.search-modal.is-open{display:flex}.search-modal[hidden]{display:none !important}.search-dialog{width:min(760px,100%);background:var(--cream-3);border-radius:28px;padding:34px;box-shadow:0 32px 100px rgba(15,42,61,.24);position:relative;border:1px solid rgba(255,255,255,.8)}.search-modal__close{position:absolute;right:18px;top:18px;width:40px;height:40px;border-radius:50%;border:1px solid var(--line-strong);background:#fff;cursor:pointer;font-size:26px;line-height:1}.search-line{display:grid;grid-template-columns:1fr auto;gap:10px}.search-line input{min-width:0;padding:13px 15px;border:1px solid var(--line-strong);border-radius:14px;background:white}.search-suggest{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}.search-suggest a,.chip{padding:7px 11px;border-radius:999px;background:var(--sky-soft);color:var(--navy-2)}body.search-open{overflow:hidden}.eyebrow{display:inline-block;font-size:12px;letter-spacing:.12em;text-transform:uppercase;font-weight:800;color:var(--primary);margin-bottom:8px}.btn{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:10px 18px;border-radius:999px;border:1px solid transparent;font-weight:800}.btn-primary{background:var(--primary);color:#fff}.btn-primary:hover{background:var(--navy-2)}.btn-secondary{background:var(--cream);border-color:var(--line-strong);color:var(--navy)}.btn-live{background:var(--accent);color:#fff}.text-link{font-weight:800;color:var(--primary);white-space:nowrap}.page-hero{padding:58px 0 42px;background:linear-gradient(135deg,var(--cream) 0%,var(--bg) 48%,var(--sky-soft) 100%);overflow:hidden}.hero-grid{display:grid;grid-template-columns:7fr 5fr;align-items:center;gap:50px}.page-hero h1{font-size:clamp(38px,5vw,72px);line-height:1.08;margin:0 0 18px;letter-spacing:-.045em;color:var(--navy)}.hero-lead{font-size:18px;max-width:720px;color:var(--text-2)}.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:24px}.hero-media{position:relative}.hero-media img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:32px;box-shadow:var(--shadow)}section{padding:54px 0}.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:28px;margin-bottom:24px}.section-head h2{font-size:clamp(28px,3.2vw,44px);line-height:1.15;margin:0 0 6px;color:var(--navy);letter-spacing:-.025em}.section-head p{margin:0;max-width:760px;color:var(--text-2)}.video-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}.video-grid.four{grid-template-columns:repeat(4,1fr)}.video-grid.two{grid-template-columns:repeat(2,1fr)}.video-card{min-width:0}.video-thumb{display:block;position:relative;overflow:hidden;border-radius:18px;background:var(--sky-soft);aspect-ratio:16/9}.video-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .25s ease}.video-card:hover .video-thumb img{transform:scale(1.02)}.play{position:absolute;left:14px;bottom:14px;width:42px;height:42px;border-radius:50%;display:grid;place-items:center;background:rgba(255,255,255,.92);color:var(--navy);transition:transform .2s}.video-card:hover .play{transform:scale(1.06)}.duration{position:absolute;right:12px;bottom:12px;background:rgba(15,42,61,.78);color:white;border-radius:999px;padding:4px 8px;font-size:12px}.card-copy{padding:14px 2px 2px}.card-copy h3,.discussion-card h3,.tutorial-card h3,.channel-card h3,.media-card h3{font-size:18px;line-height:1.35;margin:5px 0 8px;color:var(--navy)}.card-copy p,.discussion-card p,.tutorial-card p,.channel-card p,.media-card p{color:var(--text-2);margin:0 0 10px}.meta-label{font-size:12px;font-weight:800;color:var(--primary)}.card-meta{display:flex;justify-content:space-between;gap:14px;color:var(--text-3);font-size:12px}.rail{display:flex;overflow:auto;gap:16px;padding-bottom:10px;scroll-snap-type:x proximity}.rail>*{flex:0 0 min(360px,82vw);scroll-snap-align:start}.hero-focus{padding:62px 0;background:linear-gradient(135deg,#FFF9EE,#EDF8FD)}.focus-layout{display:grid;grid-template-columns:1.35fr .65fr;gap:22px}.focus-main{background:var(--navy);color:white;border-radius:28px;padding:24px}.focus-main .video-thumb{aspect-ratio:16/8}.focus-main h2,.focus-main h3{color:white}.focus-side{display:grid;gap:14px}.focus-note{background:white;border:1px solid var(--line);border-radius:18px;padding:18px}.chips-row{display:flex;flex-wrap:wrap;gap:9px}.chips-row a{background:white;border:1px solid var(--line-strong);padding:9px 14px;border-radius:999px}.rank-layout{display:grid;grid-template-columns:1fr .72fr;gap:26px}.ranking-list{margin:0;padding:0;list-style:none;background:white;border-radius:24px;overflow:hidden;border:1px solid var(--line)}.ranking-list li{display:grid;grid-template-columns:44px 1fr auto;gap:12px;padding:14px 16px;border-bottom:1px solid var(--line);align-items:center}.ranking-list li:last-child{border-bottom:0}.ranking-no{font-size:22px;font-weight:900;color:var(--primary)}.split-feature{display:grid;grid-template-columns:1fr 1fr;align-items:center;gap:40px}.split-feature.reverse .split-copy{order:2}.split-feature img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:26px}.split-copy h2{font-size:42px;line-height:1.15;margin:0 0 14px}.bento{display:grid;grid-template-columns:1.2fr .8fr .8fr;grid-template-rows:1fr 1fr;gap:16px}.bento .bento-item{border-radius:22px;overflow:hidden;position:relative;min-height:220px;background:var(--navy);color:white}.bento .bento-item:first-child{grid-row:span 2}.bento img{width:100%;height:100%;object-fit:cover;opacity:.68}.bento-copy{position:absolute;inset:auto 18px 18px}.bento-copy h3{margin:4px 0;font-size:22px}.live-stage{display:grid;grid-template-columns:1.35fr .65fr;gap:22px}.live-card{background:white;border:1px solid var(--line);border-radius:20px;overflow:hidden}.live-visual{position:relative;aspect-ratio:16/9;overflow:hidden}.live-visual img{width:100%;height:100%;object-fit:cover}.live-badge{position:absolute;left:12px;top:12px;background:var(--accent);color:#fff;border-radius:999px;padding:5px 9px;font-size:12px;font-weight:900}.live-side{display:grid;gap:14px}.dark-section{background:var(--navy);color:#fff}.dark-section .section-head h2,.dark-section .section-head p,.dark-section .text-link{color:#fff}.dark-section .live-card{background:#123047;border-color:rgba(255,255,255,.12)}.dark-section .card-copy h3,.dark-section .card-copy p{color:#fff}.anchor-rail{display:flex;gap:18px;overflow:auto;padding-bottom:10px}.anchor-card{display:flex;gap:15px;align-items:flex-start;background:var(--surface);border-radius:18px;padding:16px;border:1px solid var(--line)}.anchor-card img{width:84px;height:84px;object-fit:cover;border-radius:50%}.anchor-rail .anchor-card{flex:0 0 320px}.anchor-card h3{margin:4px 0}.anchor-card p{margin:6px 0;color:var(--text-2)}.status-dot{font-size:11px;color:var(--accent);font-weight:900}.community-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}.discussion-card{display:grid;grid-template-columns:46px 1fr;gap:12px;padding:18px;border-radius:18px;background:white;border:1px solid var(--line)}.avatar{width:46px;height:46px;border-radius:50%;display:grid;place-items:center;background:var(--sky-light);color:var(--navy);font-weight:900}.timeline{display:grid;gap:0;border-left:2px solid var(--sky-light);margin-left:18px}.timeline .discussion-card{border:0;border-radius:0;background:transparent;position:relative}.timeline .discussion-card::before{content:"";position:absolute;left:-7px;top:27px;width:12px;height:12px;border-radius:50%;background:var(--primary)}.channel-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}.channel-card{display:grid;grid-template-columns:180px 1fr;gap:18px;background:white;border-radius:20px;border:1px solid var(--line);padding:12px}.channel-card img{width:100%;height:100%;min-height:150px;object-fit:cover;border-radius:14px}.tag-row{display:flex;gap:8px;flex-wrap:wrap}.tag-row span{font-size:12px;padding:5px 9px;border-radius:999px;background:var(--sky-soft)}.trend-bars{display:grid;gap:12px}.trend-item{display:grid;grid-template-columns:220px 1fr 60px;align-items:center;gap:14px}.trend-track{height:10px;background:var(--sky-light);border-radius:999px;overflow:hidden}.trend-fill{height:100%;background:var(--primary);border-radius:999px}.media-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.media-card{background:white;border-radius:20px;overflow:hidden;border:1px solid var(--line)}.media-card img{width:100%;aspect-ratio:16/10;object-fit:cover}.media-card>div{padding:16px}.tutorial-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}.tutorial-card{padding:18px;border-radius:18px;background:var(--cream);border:1px solid var(--line-warm)}.story-split{display:grid;grid-template-columns:.7fr 1.3fr;gap:28px;align-items:center}.story-split img{border-radius:28px;aspect-ratio:4/5;object-fit:cover}.story-list{display:grid;gap:14px}.story-item{padding:18px;border-left:4px solid var(--primary);background:white;border-radius:0 16px 16px 0}.app-section{background:linear-gradient(135deg,var(--cream-2),var(--sky-soft))}.device-layout{display:grid;grid-template-columns:.8fr 1.2fr;gap:40px;align-items:center}.device-stack{display:grid;grid-template-columns:1fr .65fr;align-items:end}.device-stack img{border-radius:28px;box-shadow:var(--shadow)}.device-stack img:last-child{margin-left:-40px;transform:translateY(24px)}.feature-list{display:grid;grid-template-columns:1fr 1fr;gap:14px}.feature-box{padding:16px;border-radius:16px;background:rgba(255,255,255,.76);border:1px solid rgba(255,255,255,.9)}.steps{counter-reset:steps;display:grid;grid-template-columns:repeat(4,1fr);gap:16px}.step{counter-increment:steps;padding:20px;background:white;border-radius:18px;border:1px solid var(--line)}.step::before{content:counter(steps);display:grid;place-items:center;width:34px;height:34px;border-radius:50%;background:var(--primary);color:white;font-weight:900;margin-bottom:12px}.info-band{padding:24px;border-radius:22px;background:var(--sky-soft);border:1px solid var(--line-strong)}.faq-list{max-width:920px;margin:auto}.faq-list h2{text-align:center;font-size:38px}.faq-item{background:white;border:1px solid var(--line);border-radius:16px;padding:0 18px;margin:10px 0}.faq-item summary{cursor:pointer;font-weight:800;padding:16px 0;color:var(--navy)}.faq-item p{color:var(--text-2);padding:0 0 16px;margin:0}.site-footer{background:var(--navy);color:rgba(255,255,255,.78);padding:56px 0 92px}.footer-grid{display:grid;grid-template-columns:1.4fr repeat(4,1fr);gap:28px}.footer-grid h3{color:#fff}.footer-grid a{display:block;padding:4px 0}.brand--footer{color:#fff}.footer-bottom{display:flex;justify-content:space-between;gap:30px;border-top:1px solid rgba(255,255,255,.12);margin-top:34px;padding-top:20px;font-size:13px}.bottom-nav{display:none}.back-top{position:fixed;right:20px;bottom:20px;z-index:850;width:44px;height:44px;border:0;border-radius:50%;background:var(--navy);color:white;box-shadow:var(--shadow);cursor:pointer}.back-top[hidden]{display:none}.search-results{display:grid;gap:12px}.search-result{padding:18px;border-radius:16px;background:white;border:1px solid var(--line)}.search-result h3{margin:3px 0}.notice{padding:14px 16px;border-radius:14px;background:var(--accent-soft);border:1px solid var(--line-warm)}.info-modules{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.info-card{background:white;padding:22px;border-radius:20px;border:1px solid var(--line)}.info-card h2{font-size:24px;margin-top:0}.content-prose{max-width:900px}.content-prose h2{font-size:32px}.content-prose p{font-size:17px;color:var(--text-2)}
@media (max-width:1050px){.main-nav{display:none}.hero-grid,.focus-layout,.rank-layout,.live-stage,.device-layout,.story-split{grid-template-columns:1fr}.video-grid.four,.tutorial-grid{grid-template-columns:repeat(2,1fr)}.media-grid{grid-template-columns:repeat(2,1fr)}.footer-grid{grid-template-columns:repeat(3,1fr)}.footer-grid>div:first-child{grid-column:1/-1}.bento{grid-template-columns:1fr 1fr}.bento .bento-item:first-child{grid-column:1/-1;grid-row:auto;min-height:330px}}
@media (max-width:720px){.wrap{width:min(100% - 24px,var(--wrap))}.top-note{font-size:12px}.header-inner{min-height:62px;gap:12px}.brand span{display:none}.header-actions{margin-left:auto}.icon-btn{font-size:13px;padding:7px 9px}.page-hero{padding-top:34px}.page-hero h1{font-size:42px}.hero-grid{gap:24px}.hero-media img{aspect-ratio:16/10}.section-head{align-items:flex-start;flex-direction:column;gap:10px}section{padding:38px 0}.video-grid,.video-grid.four,.video-grid.two,.community-grid,.channel-grid,.media-grid,.tutorial-grid,.feature-list,.steps,.info-modules{grid-template-columns:1fr}.video-grid.mobile-two{grid-template-columns:1fr 1fr}.rail>*{flex-basis:78vw}.split-feature{grid-template-columns:1fr;gap:20px}.split-feature.reverse .split-copy{order:0}.split-copy h2{font-size:34px}.bento{grid-template-columns:1fr}.bento .bento-item:first-child{grid-column:auto}.channel-card{grid-template-columns:110px 1fr}.trend-item{grid-template-columns:1fr 60px}.trend-item .trend-track{grid-column:1/-1;grid-row:2}.footer-grid{grid-template-columns:1fr 1fr}.footer-bottom{flex-direction:column}.bottom-nav{display:flex;position:fixed;left:10px;right:10px;bottom:10px;z-index:999;justify-content:space-around;padding:9px;background:rgba(255,255,255,.94);backdrop-filter:blur(14px);border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow)}.bottom-nav a{font-size:12px}.back-top{bottom:76px}.site-footer{padding-bottom:120px}.mobile-menu .wrap{grid-template-columns:repeat(2,1fr)}.search-dialog{padding:26px 18px}.search-line{grid-template-columns:1fr}.anchor-card{min-width:280px}}