: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}body.search-open{overflow:hidden}
a{color:inherit;text-decoration:none}img{display:block;max-width:100%}button,input{font:inherit}.wrap{width:min(calc(100% - 40px),var(--wrap));margin-inline:auto}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.skip-link{position:fixed;left:20px;top:10px;z-index:9999;background:var(--navy);color:white;padding:10px 14px;border-radius:10px;transform:translateY(-150%)}.skip-link:focus{transform:none}.top-notice{padding:8px 16px;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:60;background:rgba(255,249,238,.88);backdrop-filter:blur(16px);border-bottom:1px solid transparent;transition:.25s ease}.site-header.is-scrolled{border-color:var(--line);box-shadow:0 8px 24px rgba(23,52,74,.07)}.header-inner{min-height:72px;display:flex;align-items:center;gap:26px}.brand{display:flex;align-items:center;gap:10px;min-width:165px}.brand img{width:46px;height:34px;object-fit:cover;border-radius:10px}.brand span{display:flex;flex-direction:column;line-height:1.1}.brand strong{font-size:20px;color:var(--navy)}.brand small{font-size:9px;letter-spacing:.13em;color:var(--primary)}.desktop-nav{display:flex;gap:6px;flex:1}.desktop-nav a{padding:9px 11px;border-radius:10px;color:var(--navy-soft);font-size:14px}.desktop-nav a:hover,.desktop-nav a[aria-current="page"]{background:var(--sky-soft);color:var(--navy)}.header-actions{display:flex;align-items:center;gap:7px}.icon-action,.menu-toggle{border:0;background:transparent;padding:9px 10px;border-radius:10px;color:var(--navy-2);cursor:pointer}.icon-action:hover,.menu-toggle:hover{background:rgba(255,255,255,.72)}.mega-menu{border-top:1px solid var(--line);background:rgba(255,253,248,.97);box-shadow:var(--shadow)}.mega-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:30px;padding-block:24px}.mega-grid>div{display:flex;flex-direction:column;gap:7px}.mega-grid strong{color:var(--navy);margin-bottom:4px}.mega-grid a{color:var(--text-2);font-size:14px}.mega-grid a:hover{color:var(--primary)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:var(--radius-pill);padding:10px 18px;font-weight:700;border:1px solid transparent;cursor:pointer;transition:.2s ease}.btn--primary{background:var(--primary);color:white}.btn--primary:hover{background:#398BC3;transform:translateY(-1px)}.btn--secondary{background:var(--cream);border-color:var(--line-strong);color:var(--navy)}.btn--soft{background:var(--surface);border-color:var(--line);color:var(--primary)}.btn--live{background:var(--accent);color:white}.text-link{color:var(--primary);font-weight:700;white-space:nowrap}.eyebrow{display:inline-flex;color:var(--primary);font-size:12px;font-weight:800;letter-spacing:.11em;text-transform:uppercase}.section{padding:72px 0}.section--tight{padding:46px 0}.section--blue{background:var(--bg-blue)}.section--cream{background:var(--bg-cream)}.section--dark{background:var(--navy);color:white}.section--dark .section-heading p,.section--dark .meta-line,.section--dark .byline{color:rgba(255,255,255,.68)}.section-heading{display:flex;align-items:end;justify-content:space-between;gap:30px;margin-bottom:28px}.section-heading h2{font-size:clamp(27px,4vw,42px);line-height:1.12;margin:8px 0 10px;color:var(--navy)}.section--dark .section-heading h2{color:white}.section-heading p{margin:0;max-width:720px;color:var(--text-2)}.section-heading--center{text-align:center;justify-content:center}.section-heading--center p{margin-inline:auto}
.hero{padding:64px 0 74px;background:linear-gradient(135deg,var(--cream) 0%,var(--cream-3) 45%,var(--sky-soft) 100%);overflow:hidden}.hero-grid{display:grid;grid-template-columns:minmax(0,7fr) minmax(360px,5fr);gap:46px;align-items:center}.hero-copy h1{font-size:clamp(42px,6vw,72px);line-height:1.05;letter-spacing:-.035em;margin:14px 0 22px;color:var(--navy)}.hero-copy>p{font-size:17px;color:var(--text-2);max-width:760px}.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin:28px 0}.hero-search{display:flex;max-width:690px;padding:7px;border:1px solid var(--line-strong);background:rgba(255,255,255,.8);border-radius:var(--radius-pill);box-shadow:var(--shadow)}.hero-search input{flex:1;min-width:0;border:0;background:transparent;padding:0 14px;outline:none}.hero-visual{position:relative}.hero-visual>img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--radius-large);box-shadow:var(--shadow-hover)}.floating-panel{position:absolute;right:-22px;bottom:-22px;width:min(310px,74%);padding:18px;background:rgba(255,255,255,.94);backdrop-filter:blur(12px);border:1px solid var(--line);border-radius:20px;box-shadow:var(--shadow)}.floating-panel strong{display:block;color:var(--navy);font-size:18px}.focus-list{display:grid;gap:8px;margin-top:12px}.focus-list span{display:flex;justify-content:space-between;color:var(--text-2);font-size:13px}.focus-list b{color:var(--primary)}
.chip-row{display:flex;gap:9px;flex-wrap:wrap}.chip{padding:8px 13px;border-radius:var(--radius-pill);background:white;border:1px solid var(--line);color:var(--navy-2);font-size:13px}.chip:hover{background:var(--sky-soft);border-color:var(--line-strong)}.horizontal-track,.avatar-rail,.media-strip{display:grid;grid-auto-flow:column;grid-auto-columns:minmax(260px,32%);gap:18px;overflow-x:auto;padding:2px 2px 16px;scroll-snap-type:x proximity}.avatar-rail{grid-auto-columns:minmax(200px,22%)}.media-strip{grid-auto-columns:minmax(320px,38%)}.horizontal-track>*{scroll-snap-align:start}
.video-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}.compact-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}.feature-grid{display:grid;grid-template-columns:1.65fr repeat(2,1fr);grid-template-rows:repeat(2,1fr);gap:18px}.feature-grid .video-card:first-child{grid-row:span 2}.feature-grid .video-card:first-child .video-thumb{aspect-ratio:16/11}.quad-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}.masonry-grid{columns:3 280px;column-gap:20px}.masonry-grid .video-card{break-inside:avoid;margin-bottom:20px}.bento-grid{display:grid;grid-template-columns:1.3fr .7fr 1fr;grid-auto-rows:minmax(180px,auto);gap:18px}.bento-grid>*:first-child{grid-row:span 2}.ranking-split{display:grid;grid-template-columns:minmax(0,1.45fr) minmax(300px,.55fr);gap:28px;align-items:start}.live-stage{display:grid;grid-template-columns:minmax(0,1.55fr) minmax(310px,.75fr);gap:22px}.discussion-columns{display:grid;grid-template-columns:1fr 1fr;gap:20px}.story-split{display:grid;grid-template-columns:1.05fr .95fr;gap:40px;align-items:center}.story-split--reverse{grid-template-columns:.95fr 1.05fr}.story-split--reverse .story-media{order:2}.story-media img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--radius-large)}.tag-trend{display:grid;grid-template-columns:.78fr 1.22fr;gap:28px}.creator-story{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}.app-showcase{display:grid;grid-template-columns:.7fr 1.3fr;gap:48px;align-items:center}.app-showcase img{max-height:620px;width:100%;object-fit:contain}.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}.step{padding:22px;border:1px solid var(--line);border-radius:var(--radius-card);background:var(--surface-cream)}.step b{display:inline-grid;place-items:center;width:34px;height:34px;border-radius:50%;background:var(--sky-soft);color:var(--primary);margin-bottom:12px}.compare-grid{display:grid;grid-template-columns:1fr 1fr;gap:22px}.editorial-note{padding:32px;border-left:4px solid var(--primary);background:linear-gradient(90deg,var(--sky-soft),rgba(255,255,255,.7));border-radius:0 var(--radius-large) var(--radius-large) 0}.timeline{display:grid;gap:0}.timeline-item{display:grid;grid-template-columns:130px 18px 1fr;gap:14px;padding:0 0 26px}.timeline-dot{width:12px;height:12px;border-radius:50%;background:var(--primary);margin-top:7px;box-shadow:0 0 0 5px var(--sky-soft)}.trend-bars{display:grid;gap:14px}.trend-row{display:grid;grid-template-columns:minmax(160px,.5fr) 1.5fr 58px;gap:14px;align-items:center}.trend-track{height:10px;background:var(--cream-2);border-radius:999px;overflow:hidden}.trend-fill{height:100%;background:linear-gradient(90deg,var(--primary),var(--sky));border-radius:inherit}
.video-card{overflow:hidden;border-radius:var(--radius-card);background:var(--surface);border:1px solid var(--line);transition:.22s ease}.video-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover)}.video-thumb{position:relative;display:block;aspect-ratio:16/9;overflow:hidden;background:var(--sky-soft)}.video-thumb img{width:100%;height:100%;object-fit:cover;transition:.25s ease}.video-card:hover .video-thumb img{transform:scale(1.02)}.play-icon{position:absolute;left:14px;bottom:13px;display:grid;place-items:center;width:38px;height:38px;border-radius:50%;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;padding:3px 7px;border-radius:8px;background:rgba(15,42,61,.82);color:white;font-size:11px}.video-card__body{padding:17px}.video-card h3{font-size:19px;line-height:1.35;margin:8px 0}.video-card p{margin:0;color:var(--text-2);font-size:14px}.card-reason{margin-top:10px!important;padding-top:10px;border-top:1px dashed var(--line);color:var(--primary)!important}.meta-line,.byline{display:flex;align-items:center;justify-content:space-between;gap:10px;color:var(--text-3);font-size:12px}.byline{margin-top:14px}.video-card--compact .video-card__body{padding:13px}.video-card--compact p{display:none}.video-card--borderless{border:0;background:transparent}.video-card--cream{background:var(--cream)}
.live-card{overflow:hidden;border-radius:var(--radius-card);background:white;border:1px solid var(--line-warm)}.live-media{position:relative;aspect-ratio:16/9;overflow:hidden}.live-media img{width:100%;height:100%;object-fit:cover}.live-badge{position:absolute;left:12px;top:12px;padding:5px 9px;border-radius:999px;background:var(--accent);color:white;font-size:11px;font-weight:800;letter-spacing:.08em}.live-card__body{padding:17px}.live-card h3{margin:7px 0;font-size:19px}.live-card p{margin:0;color:var(--text-2);font-size:14px}.live-card--stage .live-media{aspect-ratio:16/10}.live-card--stage h3{font-size:25px}
.anchor-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}.anchor-card{display:grid;grid-template-columns:88px 1fr;gap:15px;padding:18px;border-radius:var(--radius-card);background:white;border:1px solid var(--line)}.anchor-card>img{width:88px;height:88px;object-fit:cover;border-radius:50%;background:var(--sky-soft)}.anchor-card h3{margin:4px 0 2px}.anchor-card p{margin:4px 0;color:var(--text-2);font-size:13px}.anchor-direction{color:var(--primary)!important;font-weight:700}.recent-topic{font-size:12px!important}.status-dot{width:7px;height:7px;border-radius:50%;background:var(--accent)}.anchor-card--portrait{grid-template-columns:1fr;text-align:center}.anchor-card--portrait>img{width:120px;height:120px;margin:auto}
.topic-card{padding:22px;border-radius:var(--radius-card);background:white;border:1px solid var(--line)}.topic-author{display:flex;align-items:center;gap:10px}.topic-author>div{display:flex;flex-direction:column}.topic-author small{color:var(--text-3)}.avatar-dot{display:grid;place-items:center;width:38px;height:38px;border-radius:50%;background:var(--sky-soft);color:var(--primary);font-weight:800}.topic-card h3{font-size:19px;line-height:1.4}.topic-card p{color:var(--text-2)}.topic-related,.topic-reply{font-size:12px;color:var(--text-3);padding-top:9px;border-top:1px dashed var(--line)}.topic-reply{border-top:0;color:var(--primary)}
.rank-list{display:grid;gap:2px}.rank-item{display:grid;grid-template-columns:42px 1fr auto;gap:12px;align-items:center;padding:14px 10px;border-bottom:1px solid var(--line)}.rank-no{font-size:24px;font-weight:900;color:var(--sky)}.rank-item:nth-child(-n+3) .rank-no{color:var(--accent)}.rank-item small{display:block;color:var(--text-3)}
.faq-wrap{max-width:960px;margin:auto}.faq-list{display:grid;gap:10px}.faq-item{border:1px solid var(--line);border-radius:15px;background:white;overflow:hidden}.faq-question{width:100%;display:flex;justify-content:space-between;gap:20px;padding:18px 20px;background:transparent;border:0;color:var(--navy);font-weight:800;text-align:left;cursor:pointer}.faq-answer{padding:0 20px 18px;color:var(--text-2)}.faq-answer p{margin:0}
.search-modal{display:none;position:fixed;inset:0;z-index:120;align-items:flex-start;justify-content:center;padding:12vh 20px 30px;background:rgba(15,42,61,.48);backdrop-filter:blur(8px)}.search-modal.is-open{display:flex}.search-modal[hidden]{display:none !important}.search-dialog{position:relative;width:min(760px,100%);padding:34px;border-radius:var(--radius-large);background:var(--surface-cream);box-shadow:0 30px 80px rgba(15,42,61,.24)}.search-dialog h2{font-size:clamp(26px,4vw,38px);margin:6px 0 18px;color:var(--navy)}.search-close{position:absolute;right:18px;top:16px;width:42px;height:42px;border-radius:50%;border:1px solid var(--line);background:white;color:var(--navy);font-size:23px;cursor:pointer}.search-form{display:flex;gap:10px}.search-form input{flex:1;min-width:0;border:1px solid var(--line-strong);background:white;border-radius:999px;padding:13px 17px;outline:none}.search-form input:focus{border-color:var(--primary);box-shadow:0 0 0 4px var(--sky-soft)}.search-suggestions{display:flex;align-items:center;gap:8px;flex-wrap:wrap;margin-top:16px;color:var(--text-3);font-size:12px}.search-suggestions a{padding:5px 9px;border-radius:999px;background:var(--sky-soft);color:var(--navy-2)}
.site-footer{background:var(--navy);color:white;padding:58px 0 28px}.footer-grid{display:grid;grid-template-columns:1.7fr repeat(3,.7fr);gap:34px}.footer-grid>div:not(.footer-brand){display:flex;flex-direction:column;gap:8px}.footer-grid a{color:rgba(255,255,255,.72);font-size:14px}.footer-brand p{max-width:650px;color:rgba(255,255,255,.68)}.footer-brand h2{font-size:32px;line-height:1.2;margin:10px 0}.footer-bottom{display:flex;justify-content:space-between;gap:20px;margin-top:36px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);font-size:12px;color:rgba(255,255,255,.6)}.footer-bottom div{display:flex;gap:14px}.mobile-bottom-nav{display:none}.back-to-top{position:fixed;right:24px;bottom:24px;z-index:55;width:46px;height:46px;border:0;border-radius:50%;background:var(--navy);color:white;box-shadow:var(--shadow);cursor:pointer}
.page-hero{padding:58px 0;background:linear-gradient(135deg,var(--cream),var(--sky-soft))}.page-hero__grid{display:grid;grid-template-columns:1.25fr .75fr;gap:42px;align-items:center}.page-hero h1{font-size:clamp(38px,5vw,60px);line-height:1.08;color:var(--navy);margin:10px 0 18px}.page-hero p{font-size:16px;color:var(--text-2);max-width:760px}.page-hero img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--radius-large)}.prose-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.info-card{padding:22px;border-radius:var(--radius-card);background:var(--surface);border:1px solid var(--line)}.info-card h3{margin:0 0 8px;color:var(--navy)}.info-card p{margin:0;color:var(--text-2)}.notice-card{padding:22px;border-radius:var(--radius-card);background:var(--accent-soft);border:1px solid var(--line-warm)}.dark-card{background:var(--navy-2);color:white;border-radius:var(--radius-card);padding:24px}.dark-card p{color:rgba(255,255,255,.72)}
@media (max-width:1100px){.desktop-nav{display:none}.header-inner{gap:14px}.brand{margin-right:auto}.video-grid,.anchor-grid{grid-template-columns:repeat(2,1fr)}.compact-grid,.quad-grid{grid-template-columns:repeat(2,1fr)}.feature-grid{grid-template-columns:1.3fr 1fr}.feature-grid .video-card:first-child{grid-row:auto}.bento-grid{grid-template-columns:1fr 1fr}.bento-grid>*:first-child{grid-row:auto}.steps{grid-template-columns:repeat(2,1fr)}.footer-grid{grid-template-columns:1.4fr repeat(3,.6fr)}}
@media (max-width:820px){.wrap{width:min(calc(100% - 28px),var(--wrap))}.top-notice{font-size:11px}.header-inner{min-height:64px}.header-actions>.icon-action:nth-child(2),.header-actions>.btn{display:none}.menu-toggle{display:none}.hero{padding-top:36px}.hero-grid,.page-hero__grid,.ranking-split,.live-stage,.story-split,.story-split--reverse,.tag-trend,.app-showcase,.compare-grid{grid-template-columns:1fr}.story-split--reverse .story-media{order:initial}.floating-panel{position:relative;right:auto;bottom:auto;width:100%;margin-top:12px}.video-grid{grid-template-columns:1fr 1fr;gap:13px}.compact-grid{display:flex;overflow-x:auto}.compact-grid>*{min-width:240px}.feature-grid{display:grid;grid-template-columns:1fr 1fr}.feature-grid .video-card:first-child{grid-column:1/-1}.masonry-grid{columns:2 220px}.anchor-grid{display:flex;overflow-x:auto}.anchor-grid>*{min-width:280px}.discussion-columns,.creator-story,.prose-grid{grid-template-columns:1fr}.horizontal-track,.avatar-rail,.media-strip{grid-auto-columns:78%}.mega-menu{display:none!important}.mobile-bottom-nav{display:grid;position:fixed;left:12px;right:12px;bottom:12px;z-index:58;grid-template-columns:repeat(5,1fr);padding:8px;border-radius:18px;background:rgba(23,52,74,.94);backdrop-filter:blur(14px);box-shadow:0 18px 50px rgba(15,42,61,.28)}.mobile-bottom-nav a{text-align:center;color:white;padding:9px 3px;font-size:12px;border-radius:10px}.mobile-bottom-nav a:hover{background:rgba(255,255,255,.1)}.site-footer{padding-bottom:95px}.footer-grid{grid-template-columns:1fr 1fr}.footer-brand{grid-column:1/-1}.footer-bottom{flex-direction:column}.back-to-top{bottom:82px}.search-dialog{padding:28px 20px}.search-form{flex-direction:column}.trend-row{grid-template-columns:1fr}.trend-row>span:last-child{display:none}}
@media (max-width:560px){.brand img{width:38px}.brand strong{font-size:17px}.header-actions{gap:2px}.icon-action,.menu-toggle{padding:8px}.section{padding:54px 0}.section-heading{align-items:flex-start;flex-direction:column;gap:8px}.hero-copy h1{font-size:42px}.hero-search{border-radius:18px;flex-direction:column}.video-grid,.feature-grid,.bento-grid{grid-template-columns:1fr}.feature-grid .video-card:first-child{grid-column:auto}.video-card__body{padding:14px}.masonry-grid{columns:1}.horizontal-track,.avatar-rail,.media-strip{grid-auto-columns:88%}.steps{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr}.footer-brand{grid-column:auto}.mobile-bottom-nav{left:8px;right:8px;bottom:8px}.page-hero{padding:42px 0}.page-hero h1{font-size:40px}}
.video-player{display:block;width:100%;aspect-ratio:16/9;background:#0F2A3D;border-radius:var(--radius-large);box-shadow:var(--shadow);object-fit:contain}code{padding:.12em .36em;border-radius:6px;background:var(--sky-soft);color:var(--navy)}button:disabled{opacity:.58;cursor:not-allowed}