: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}a{color:inherit;text-decoration:none}img{display:block;max-width:100%}button,input{font:inherit}.wrap{width:min(var(--wrap),calc(100% - 40px));margin: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:12px;top:-60px;z-index:10000;background:#fff;padding:10px 14px;border-radius:10px}.skip-link:focus{top:12px}.top-note{background:var(--navy);color:#dff1fb;font-size:13px}.top-note .wrap{display:flex;justify-content:space-between;padding:7px 0}.site-header{position:sticky;top:0;z-index:900;background:rgba(255,249,238,.9);backdrop-filter:blur(18px);border-bottom:1px solid var(--line)}.header-inner{min-height:76px;display:flex;align-items:center;gap:28px}.brand{display:flex;align-items:center;gap:10px;min-width:max-content}.brand img{width:42px;height:42px;border-radius:14px}.brand span{display:grid}.brand strong{font-size:19px}.brand small{font-size:9px;letter-spacing:.18em;color:var(--navy-soft)}.desktop-nav{display:flex;gap:4px;flex:1}.desktop-nav a{padding:9px 12px;border-radius:999px;font-weight:650;color:var(--text-2)}.desktop-nav a:hover,.desktop-nav a.is-active{background:var(--sky-soft);color:var(--primary)}.header-actions{display:flex;gap:7px;align-items:center}.icon-btn,.menu-btn{border:1px solid var(--line-strong);background:rgba(255,255,255,.72);padding:8px 11px;border-radius:999px;color:var(--navy);cursor:pointer}.menu-btn{background:var(--primary);color:#fff;border-color:transparent}.mega-menu{background:rgba(255,253,248,.98);border-top:1px solid var(--line)}.mega-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:10px;padding:18px 0}.mega-grid a{padding:12px;background:var(--surface);border:1px solid var(--line);border-radius:12px}.search-modal{display:none;position:fixed;inset:0;z-index:5000;background:rgba(14,42,61,.54);padding:24px;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%);margin-top:12vh;background:var(--cream);border-radius:28px;padding:26px;box-shadow:0 30px 90px rgba(15,42,61,.28)}.search-dialog-head{display:flex;justify-content:space-between;align-items:flex-start}.search-dialog-head h2{font-size:30px;margin:3px 0 18px}.search-close{width:42px;height:42px;border:0;border-radius:50%;background:#fff;color:var(--navy);font-size:28px;cursor:pointer}.search-form{display:flex;gap:10px}.search-form input{flex:1;padding:15px 18px;border:1px solid var(--line-strong);border-radius:14px;background:#fff;outline:none}.search-form button{border:0;background:var(--primary);color:#fff;border-radius:14px;padding:0 22px}.search-suggestions{display:flex;flex-wrap:wrap;gap:9px;margin-top:16px;align-items:center}.search-suggestions a{background:var(--sky-soft);color:var(--navy-2);padding:6px 10px;border-radius:999px}.noscript-note{padding:12px;text-align:center;background:#fff1d8;color:#6a4a20}main{overflow:hidden}.section{padding:72px 0}.section.alt{background:var(--bg-blue)}.section.cream{background:var(--bg-cream)}.section.dark{background:var(--navy);color:#fff}.section-head{display:flex;align-items:end;justify-content:space-between;gap:24px;margin-bottom:28px}.section-head.head-a{border-bottom:1px solid var(--line);padding-bottom:16px}.section-head.head-b{align-items:flex-start;background:var(--surface-blue);padding:18px 20px;border-radius:18px;border:1px solid var(--line)}.section-head.head-c{display:grid;grid-template-columns:.72fr 1.28fr;align-items:end;border-left:4px solid var(--primary);padding-left:18px}.section-head.head-d{flex-direction:column;align-items:center;text-align:center;max-width:860px;margin-left:auto;margin-right:auto}.section-head.head-d p{margin-inline:auto}.section-head.head-e{align-items:center;padding:18px 0;border-top:1px solid var(--line-strong);border-bottom:1px solid var(--line-strong)}.section-head h2{font-size:clamp(28px,3.5vw,46px);line-height:1.1;margin:5px 0 8px;letter-spacing:-.03em}.section-head p{margin:0;color:var(--text-2);max-width:680px}.dark .section-head p{color:#b9d3e2}.eyebrow{font-size:12px;font-weight:800;letter-spacing:.14em;color:var(--primary);text-transform:uppercase}.text-link{color:var(--primary);font-weight:700;white-space:nowrap}.hero{padding:64px 0 44px;background:radial-gradient(circle at 82% 18%,rgba(140,204,240,.36),transparent 26%),linear-gradient(120deg,var(--cream),var(--sky-soft))}.hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:42px;align-items:center}.hero h1{font-size:clamp(48px,7vw,86px);line-height:.98;letter-spacing:-.055em;margin:15px 0 22px;color:var(--navy)}.hero p{font-size:18px;color:var(--text-2);max-width:720px}.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin:28px 0}.btn{display:inline-flex;align-items:center;justify-content:center;padding:12px 18px;border-radius:14px;font-weight:750;border:1px solid var(--line-strong)}.btn.primary{background:var(--primary);color:#fff;border-color:var(--primary)}.btn.secondary{background:var(--cream);color:var(--navy)}.hero-search{display:flex;gap:10px;max-width:640px;background:#fff;padding:8px;border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow)}.hero-search input{flex:1;border:0;outline:0;padding:8px 10px;background:transparent}.hero-search button{border:0;background:var(--navy);color:#fff;border-radius:12px;padding:0 18px}.hero-visual{position:relative}.hero-visual>img{aspect-ratio:4/3;object-fit:cover;border-radius:32px;box-shadow:var(--shadow-hover)}.floating-card{position:absolute;right:-18px;bottom:24px;width:min(320px,80%);padding:18px;background:rgba(255,255,255,.92);backdrop-filter:blur(16px);border:1px solid var(--line);border-radius:20px;box-shadow:var(--shadow)}.floating-card strong{display:block;font-size:30px;color:var(--navy)}.chip-row{display:flex;gap:10px;overflow:auto;padding:3px 0 8px;scrollbar-width:none}.chip{white-space:nowrap;padding:9px 14px;border-radius:999px;background:#fff;border:1px solid var(--line);color:var(--navy-2)}.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}.video-card,.live-card,.topic-card,.feature-panel,.info-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden}.video-card{transition:.2s transform,.2s box-shadow}.video-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover)}.media-frame{position:relative;display:block;aspect-ratio:16/9;background:var(--sky-soft);overflow:hidden}.media-frame img{width:100%;height:100%;object-fit:cover;transition:transform .2s}.video-card:hover .media-frame img{transform:scale(1.02)}.play-button{position:absolute;left:16px;bottom:14px;width:42px;height:42px;display:grid;place-items:center;background:rgba(255,255,255,.9);color:var(--navy);border-radius:50%;transition:transform .2s}.video-card:hover .play-button{transform:scale(1.06)}.duration{position:absolute;right:12px;bottom:12px;background:rgba(15,42,61,.78);color:#fff;border-radius:8px;padding:3px 7px;font-size:12px}.card-body{padding:17px}.card-body h3{font-size:19px;line-height:1.3;margin:8px 0}.card-body p{color:var(--text-2);margin:0 0 13px}.meta-line,.byline,.topic-foot{display:flex;justify-content:space-between;gap:10px;color:var(--text-3);font-size:12px}.tag,.mini-label,.status-pill{display:inline-flex;padding:3px 8px;border-radius:999px;background:var(--sky-soft);color:var(--primary);font-weight:750}.live-badge{position:absolute;left:12px;top:12px;background:var(--accent);color:#fff;padding:5px 9px;border-radius:999px;font-size:12px;font-weight:850}.live-media img{filter:saturate(.92)}.compact-list{display:grid;gap:12px}.compact-video{display:grid;grid-template-columns:auto 116px 1fr;gap:14px;align-items:center;padding:12px;border-bottom:1px solid var(--line)}.compact-video img{width:116px;aspect-ratio:16/9;object-fit:cover;border-radius:12px}.compact-video h3{font-size:16px;margin:3px 0}.compact-video p{margin:0;color:var(--text-2);font-size:13px}.rank-num{font-size:28px;color:var(--primary-2)}.feature-split{display:grid;grid-template-columns:1.15fr .85fr;gap:24px}.feature-lead{position:relative;min-height:500px;border-radius:28px;overflow:hidden;background:var(--navy);color:#fff}.feature-lead img{width:100%;height:100%;object-fit:cover;opacity:.68;position:absolute;inset:0}.feature-lead .overlay-copy{position:absolute;inset:auto 0 0;padding:38px;background:linear-gradient(transparent,rgba(15,42,61,.93))}.feature-lead h3{font-size:36px;line-height:1.08;margin:8px 0}.editor-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}.editor-card{padding:18px;border-radius:18px;background:var(--cream);border:1px solid var(--line-warm)}.editor-card h3{margin:7px 0;font-size:18px}.editor-card p{margin:0;color:var(--text-2)}.rail-wrap{position:relative}.content-rail{display:grid;grid-auto-flow:column;grid-auto-columns:minmax(280px,32%);gap:18px;overflow-x:auto;scroll-snap-type:x proximity;padding-bottom:8px;scrollbar-width:none}.content-rail>*{scroll-snap-align:start}.rail-controls{display:flex;gap:8px}.rail-control{border:1px solid var(--line);background:#fff;width:38px;height:38px;border-radius:50%;cursor:pointer}.bento{display:grid;grid-template-columns:1.2fr .8fr .8fr;grid-template-rows:220px 220px;gap:16px}.bento-card{position:relative;overflow:hidden;border-radius:24px;background:var(--sky-soft)}.bento-card:first-child{grid-row:1/3}.bento-card img{width:100%;height:100%;object-fit:cover}.bento-card .bento-copy{position:absolute;inset:auto 0 0;padding:20px;color:#fff;background:linear-gradient(transparent,rgba(15,42,61,.9))}.bento-card h3{margin:4px 0}.anchor-rail{display:flex;gap:18px;overflow:auto;scrollbar-width:none}.anchor-card{display:grid;grid-template-columns:92px 1fr;gap:16px;min-width:320px;padding:16px;border:1px solid var(--line);background:#fff;border-radius:20px}.anchor-card img{width:92px;height:92px;object-fit:cover;border-radius:50%}.anchor-card h3{margin:4px 0}.anchor-card p{margin:4px 0;color:var(--text-2)}.anchor-card small{color:var(--text-3)}.topic-card{display:grid;grid-template-columns:44px 1fr;gap:13px;padding:17px}.avatar{width:44px;height:44px;border-radius:50%;display:grid;place-items:center;background:var(--sky-soft);font-weight:850;color:var(--primary)}.topic-card h3{margin:4px 0}.topic-card p{margin:5px 0 12px;color:var(--text-2)}.prose-note{font-size:17px;line-height:1.9;color:var(--text-2);max-width:860px}.dark .prose-note{color:#d7e5ed}.masonry{columns:3 280px;column-gap:18px}.masonry .video-card{break-inside:avoid;margin-bottom:18px}.timeline{position:relative;padding-left:24px}.timeline:before{content:"";position:absolute;left:7px;top:8px;bottom:8px;width:2px;background:var(--line-strong)}.timeline-item{position:relative;padding:0 0 24px 18px}.timeline-item:before{content:"";position:absolute;left:-22px;top:7px;width:10px;height:10px;border-radius:50%;background:var(--primary)}.trend-bars{display:grid;gap:14px}.trend-row{display:grid;grid-template-columns:160px 1fr auto;gap:14px;align-items:center}.trend-track{height:10px;background:var(--sky-soft);border-radius:999px;overflow:hidden}.trend-fill{height:100%;background:linear-gradient(90deg,var(--primary),var(--sky));border-radius:inherit}.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;counter-reset:steps}.step{padding:20px;background:#fff;border:1px solid var(--line);border-radius:18px}.step:before{counter-increment:steps;content:counter(steps);display:grid;place-items:center;width:34px;height:34px;border-radius:50%;background:var(--primary);color:#fff;font-weight:800;margin-bottom:12px}.faq-list{display:grid;gap:10px}.faq-item{background:#fff;border:1px solid var(--line);border-radius:16px;padding:0 18px}.faq-item summary{padding:16px 0;cursor:pointer;font-weight:750}.faq-item p{color:var(--text-2);padding-bottom:16px;margin:0}.app-showcase{display:grid;grid-template-columns:.8fr 1.2fr;gap:36px;align-items:center}.app-device{display:grid;grid-template-columns:1fr .72fr;align-items:end}.app-device img{border-radius:28px}.site-footer{background:var(--navy);color:#dcebf3;padding:58px 0 95px}.footer-grid{display:grid;grid-template-columns:1.8fr repeat(4,1fr);gap:28px}.footer-grid h3{color:#fff}.footer-grid>div{display:grid;align-content:start;gap:9px}.footer-brand img{width:52px;height:52px;border-radius:16px}.footer-brand h2{margin:7px 0 0}.footer-brand p{color:#abc7d6;max-width:360px}.footer-bottom{border-top:1px solid rgba(255,255,255,.12);margin-top:34px;padding-top:20px;display:flex;justify-content:space-between;gap:20px;color:#92b2c4;font-size:13px}.mobile-bottom{display:none}.back-top{position:fixed;right:18px;bottom:22px;width:44px;height:44px;border-radius:50%;border:1px solid var(--line);background:#fff;color:var(--navy);box-shadow:var(--shadow);opacity:0;pointer-events:none;transition:.2s}.back-top.is-visible{opacity:1;pointer-events:auto}
.page-hero{padding:58px 0;background:linear-gradient(135deg,var(--cream),var(--sky-soft))}.page-hero-grid{display:grid;grid-template-columns:1fr .58fr;gap:34px;align-items:center}.page-hero h1{font-size:clamp(44px,6vw,76px);line-height:1;margin:10px 0 18px}.page-hero p{font-size:17px;color:var(--text-2);max-width:760px}.page-hero img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:28px}.stat-strip{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}.stat-item{padding:18px;border-radius:16px;background:#fff;border:1px solid var(--line)}.stat-item strong{font-size:26px;color:var(--primary)}.notice{padding:16px 18px;border-left:4px solid var(--accent);background:var(--accent-soft);border-radius:0 14px 14px 0;color:var(--navy-2)}.search-results{display:grid;gap:14px}.search-result{display:grid;grid-template-columns:190px 1fr;gap:18px;padding:14px;background:#fff;border:1px solid var(--line);border-radius:18px}.search-result img{width:190px;aspect-ratio:16/9;object-fit:cover;border-radius:14px}
@media (max-width:1080px){.desktop-nav{display:none}.grid-4{grid-template-columns:repeat(2,1fr)}.grid-3{grid-template-columns:repeat(2,1fr)}.hero-grid,.page-hero-grid,.feature-split,.app-showcase{grid-template-columns:1fr}.hero-visual{max-width:760px}.bento{grid-template-columns:1fr 1fr;grid-template-rows:300px 220px}.bento-card:first-child{grid-column:1/3;grid-row:auto}.footer-grid{grid-template-columns:1.4fr repeat(2,1fr)}.content-rail{grid-auto-columns:minmax(280px,45%)}}
@media (max-width:720px){.wrap{width:min(100% - 24px,var(--wrap))}.top-note .wrap{justify-content:center}.top-note span:last-child{display:none}.site-header{top:0}.header-inner{min-height:66px}.brand img{width:36px;height:36px}.brand small{display:none}.header-actions .icon-btn:nth-of-type(2),.header-actions .icon-btn:nth-of-type(3){display:none}.section{padding:52px 0}.hero{padding-top:44px}.hero h1{font-size:48px}.hero-grid{gap:28px}.floating-card{right:8px;bottom:10px}.section-head{align-items:flex-start;flex-direction:column}.grid-4,.grid-3,.grid-2{grid-template-columns:1fr}.content-rail{grid-auto-columns:82%}.feature-lead{min-height:430px}.editor-grid{grid-template-columns:1fr 1fr}.bento{display:flex;overflow:auto}.bento-card{min-width:82%;height:260px}.masonry{columns:1}.steps{grid-template-columns:1fr 1fr}.footer-grid{grid-template-columns:1fr 1fr}.footer-brand{grid-column:1/3}.footer-bottom{flex-direction:column}.mobile-bottom{position:fixed;left:10px;right:10px;bottom:8px;z-index:850;display:grid;grid-template-columns:repeat(5,1fr);background:rgba(23,52,74,.94);backdrop-filter:blur(14px);border-radius:18px;padding:7px;color:#fff}.mobile-bottom a{text-align:center;font-size:12px;padding:6px 2px}.back-top{bottom:78px}.search-modal{padding:12px}.search-dialog{margin-top:8vh;padding:18px}.search-form{flex-direction:column}.mega-grid{grid-template-columns:repeat(2,1fr)}.compact-video{grid-template-columns:auto 90px 1fr}.compact-video img{width:90px}.stat-strip{grid-template-columns:1fr 1fr}.page-hero h1{font-size:48px}.search-result{grid-template-columns:100px 1fr}.search-result img{width:100px}}