: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}button{color:inherit}.wrap{width:min(var(--wrap),calc(100% - 40px));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:16px;top:-80px;z-index:999;background:#fff;padding:10px 16px;border-radius:10px;box-shadow:var(--shadow)}.skip-link:focus{top:16px}.top-notice{background:var(--navy);color:#fff;font-size:13px}.notice-inner{display:flex;gap:18px;align-items:center;min-height:36px}.notice-inner span{color:var(--sky-light);font-weight:800;letter-spacing:.08em}.notice-inner p{margin:0;flex:1;color:#d9e7ef}.notice-inner a{color:#fff;text-decoration:underline;text-underline-offset:3px}.site-header{position:sticky;top:0;z-index:50;background:rgba(255,249,238,.9);backdrop-filter:blur(16px);border-bottom:1px solid var(--line);box-shadow:0 6px 18px rgba(31,88,124,.04)}.header-inner{height:76px;display:flex;align-items:center;gap:28px}.brand{display:flex;align-items:center;gap:10px;min-width:180px}.brand img{width:42px;height:42px;object-fit:contain}.brand span{display:grid;line-height:1.15}.brand strong{font-size:18px}.brand small{font-size:9px;letter-spacing:.15em;color:var(--primary);margin-top:4px}.main-nav{display:flex;align-items:center;gap:6px;flex:1}.main-nav a{padding:9px 12px;border-radius:var(--radius-pill);font-weight:650;color:var(--navy-soft);font-size:14px}.main-nav a:hover,.main-nav a.is-current{background:var(--sky-soft);color:var(--primary)}.header-actions{display:flex;align-items:center;gap:8px}.icon-btn,.menu-btn,.action-link,.app-link{border:0;background:transparent;padding:9px 12px;border-radius:var(--radius-pill);cursor:pointer;font-size:14px}.icon-btn:hover,.menu-btn:hover,.action-link:hover{background:#fff}.app-link{background:var(--primary);color:#fff;font-weight:700}.mega-menu{position:absolute;left:0;right:0;top:100%;background:rgba(255,253,248,.98);border-top:1px solid var(--line);border-bottom:1px solid var(--line);box-shadow:var(--shadow)}.mega-menu[hidden]{display:none}.mega-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:32px;padding:28px 0}.mega-grid div{display:grid;gap:8px}.mega-grid span{font-size:12px;color:var(--text-3);text-transform:uppercase;letter-spacing:.08em}.mega-grid a{font-weight:650}.mega-grid a:hover{color:var(--primary)}
.search-modal{display:none;position:fixed;inset:0;z-index:200;background:rgba(15,42,61,.42);padding:7vh 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,.6);border-radius:28px;padding:28px;box-shadow:0 30px 80px rgba(15,42,61,.24)}.search-dialog-head{display:flex;gap:20px;justify-content:space-between;align-items:flex-start}.search-dialog h2{margin:5px 0 20px;font-size:clamp(24px,3vw,38px)}.search-close{width:42px;height:42px;border:1px solid var(--line-strong);border-radius:50%;background:#fff;cursor:pointer;font-size:25px}.search-form{display:grid;grid-template-columns:1fr auto;gap:10px}.search-form input{min-width:0;border:1px solid var(--line-strong);background:#fff;border-radius:14px;padding:14px 16px;outline:none}.search-form input:focus{border-color:var(--primary);box-shadow:0 0 0 4px rgba(74,155,212,.1)}.search-suggestions{display:flex;flex-wrap:wrap;gap:8px;align-items:center;margin-top:20px}.search-suggestions span{font-size:13px;color:var(--text-3)}.search-suggestions a{font-size:13px;background:var(--sky-soft);padding:7px 10px;border-radius:var(--radius-pill)}.noscript-note{margin:16px 0 0}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:12px;padding:11px 17px;border:1px solid transparent;cursor:pointer;font-weight:750}.btn-primary{background:var(--primary);color:#fff}.btn-secondary{background:var(--cream);border-color:var(--line-strong);color:var(--navy)}.btn-live{background:var(--accent);color:#fff}.text-link{font-weight:750;color:var(--primary)}.eyebrow{font-size:12px;font-weight:850;letter-spacing:.12em;color:var(--primary);text-transform:uppercase}.eyebrow.light{color:var(--sky-light)}
main{overflow:hidden}.section{padding:76px 0}.section-sm{padding:46px 0}.section-blue{background:var(--bg-blue)}.section-cream{background:var(--bg-cream)}.section-dark{background:var(--navy);color:#fff}.section-warm{background:linear-gradient(135deg,var(--cream),var(--accent-soft))}.section-head{margin-bottom:28px}.section-head-row{display:flex;gap:20px;justify-content:space-between;align-items:end}.section-head h2{margin:4px 0 6px;font-size:clamp(28px,3.6vw,48px);line-height:1.15;letter-spacing:-.03em}.section-head p{max-width:720px;margin:0;color:var(--text-2)}.section-dark .section-head p{color:#cfe0e9}.hero{position:relative;background:radial-gradient(circle at 86% 20%,rgba(140,204,240,.35),transparent 26%),linear-gradient(135deg,var(--cream) 0%,var(--sky-soft) 68%,#fff 100%);padding:70px 0 58px}.hero:before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(74,155,212,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(74,155,212,.04) 1px,transparent 1px);background-size:32px 32px;mask-image:linear-gradient(to bottom,#000,transparent)}.hero-grid{position:relative;display:grid;grid-template-columns:minmax(0,7fr) minmax(330px,5fr);gap:48px;align-items:center}.hero h1{font-size:clamp(42px,6vw,76px);line-height:1.02;letter-spacing:-.055em;margin:10px 0 22px;max-width:780px}.hero-copy>p{font-size:17px;color:var(--text-2);max-width:680px}.hero-actions{display:flex;gap:10px;flex-wrap:wrap;margin:26px 0}.hero-search{display:flex;max-width:620px;padding:7px;background:rgba(255,255,255,.76);border:1px solid var(--line);border-radius:16px;box-shadow:var(--shadow)}.hero-search input{flex:1;border:0;background:transparent;padding:9px 12px;outline:0}.hero-visual{position:relative}.hero-visual>img{width:100%;aspect-ratio:5/4;object-fit:cover;border-radius:34px;box-shadow:0 24px 70px rgba(31,88,124,.17)}.floating-panel{position:absolute;left:-34px;bottom:24px;width:min(330px,80%);background:rgba(255,253,248,.92);backdrop-filter:blur(12px);padding:18px;border:1px solid rgba(255,255,255,.8);border-radius:18px;box-shadow:var(--shadow)}.floating-panel strong{display:block;font-size:18px;margin-bottom:6px}.chip-row{display:flex;gap:9px;flex-wrap:wrap}.chip{display:inline-flex;padding:8px 12px;border:1px solid var(--line-strong);border-radius:var(--radius-pill);background:rgba(255,255,255,.72);font-size:13px}.chip:hover{border-color:var(--primary);color:var(--primary)}
.grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px}.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}.grid-4{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px}.grid-5{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:16px}.magazine-grid{display:grid;grid-template-columns:2fr 1fr 1fr;grid-template-rows:1fr 1fr;gap:16px}.magazine-grid>*:first-child{grid-row:1/3}.bento-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:16px}.bento-grid>*{grid-column:span 4}.bento-grid>*.wide{grid-column:span 8}.bento-grid>*.tall{grid-row:span 2}.split-feature{display:grid;grid-template-columns:1.15fr .85fr;gap:34px;align-items:center}.split-feature.reverse{grid-template-columns:.85fr 1.15fr}.split-feature.reverse .feature-media{order:2}.feature-media img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--radius-large)}.feature-copy h2,.feature-copy h3{font-size:clamp(30px,4vw,50px);line-height:1.12;margin:8px 0 16px}.feature-copy p{color:var(--text-2)}.rail{display:grid;grid-auto-flow:column;grid-auto-columns:minmax(280px,32%);gap:16px;overflow:auto;padding-bottom:12px;scroll-snap-type:x proximity}.rail>*{scroll-snap-align:start}.avatar-rail{display:grid;grid-auto-flow:column;grid-auto-columns:170px;gap:14px;overflow:auto;padding:4px 0 12px}.avatar-tile{text-align:center}.avatar-tile img{width:94px;height:94px;border-radius:50%;object-fit:cover;margin:0 auto 10px;border:5px solid #fff;box-shadow:var(--shadow)}.waterfall{columns:3 300px;column-gap:18px}.waterfall>*{break-inside:avoid;margin-bottom:18px}.content-sidebar{display:grid;grid-template-columns:minmax(0,1fr) 360px;gap:30px}.sticky-side{position:sticky;top:110px;align-self:start}.timeline{display:grid;gap:0}.timeline>*{position:relative;padding:0 0 28px 28px;border-left:1px solid var(--line-strong)}.timeline>*:before{content:"";position:absolute;left:-5px;top:8px;width:9px;height:9px;border-radius:50%;background:var(--primary)}.trend-list{display:grid;gap:16px}.trend-row{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:14px;align-items:center}.trend-track{grid-column:1/-1;height:7px;border-radius:99px;background:var(--sky-soft);overflow:hidden}.trend-track i{display:block;height:100%;background:linear-gradient(90deg,var(--primary),var(--sky));border-radius:inherit}.tag-cloud{display:flex;gap:10px;flex-wrap:wrap;align-items:center}.tag-cloud a:nth-child(3n){font-size:22px}.tag-cloud a:nth-child(4n){background:var(--cream-2)}.editor-note{padding:28px;border:1px solid var(--line-warm);background:var(--surface-cream);border-radius:var(--radius-large);display:grid;grid-template-columns:120px 1fr;gap:20px}.editor-note strong{font-size:13px;color:var(--accent);text-transform:uppercase;letter-spacing:.08em}.device-showcase{display:grid;grid-template-columns:minmax(0,1fr) 280px 240px;gap:28px;align-items:center}.device-showcase img{border-radius:28px;box-shadow:var(--shadow)}.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}.step{padding:24px;border-left:3px solid var(--primary);background:#fff;border-radius:0 var(--radius-card) var(--radius-card) 0}.compare-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}.compare-card{padding:28px;background:#fff;border:1px solid var(--line);border-radius:var(--radius-large)}
.video-card{background:var(--surface);border-radius:var(--radius-card);overflow:hidden;border:1px solid var(--line);transition:transform .2s ease,box-shadow .2s ease}.video-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover)}.media-frame{display:block;position:relative;overflow:hidden;background:var(--sky-soft)}.ratio-16x9{aspect-ratio:16/9}.media-frame img{width:100%;height:100%;object-fit:cover;transition:transform .25s ease}.video-card:hover .media-frame img{transform:scale(1.02)}.play-icon{position:absolute;left:14px;bottom:14px;width:40px;height:40px;border-radius:50%;display:grid;place-items:center;background:rgba(255,255,255,.9);color:var(--navy);font-size:13px;transition:transform .2s}.video-card:hover .play-icon{transform:scale(1.06)}.duration{position:absolute;right:10px;bottom:10px;background:rgba(15,42,61,.8);color:#fff;font-size:11px;padding:4px 7px;border-radius:7px}.card-body{padding:17px}.card-meta,.card-foot{display:flex;justify-content:space-between;gap:12px;color:var(--text-3);font-size:12px}.card-meta span:first-child{color:var(--primary);font-weight:750}.card-body h3{margin:7px 0;font-size:18px;line-height:1.35}.card-body p{margin:0 0 14px;color:var(--text-2);font-size:14px}.compact-video{display:grid;grid-template-columns:auto 108px 1fr;gap:14px;align-items:center;padding:14px 0;border-bottom:1px solid var(--line)}.compact-video>img{width:108px;aspect-ratio:16/9;object-fit:cover;border-radius:10px}.compact-video h3{margin:2px 0;font-size:15px;line-height:1.35}.compact-video p{margin:0;font-size:12px;color:var(--text-3)}.rank{font-size:26px;color:var(--primary)}.mini-kicker{font-size:11px;color:var(--primary);font-weight:800;letter-spacing:.05em}.live-card{border-radius:var(--radius-card);overflow:hidden;background:var(--surface);border:1px solid var(--line)}.live-cover{position:relative;aspect-ratio:16/10;overflow:hidden}.live-cover img{width:100%;height:100%;object-fit:cover}.live-badge{position:absolute;left:12px;top:12px;background:var(--accent);color:#fff;font-weight:850;font-size:11px;padding:5px 8px;border-radius:var(--radius-pill)}.anchor-card{display:grid;grid-template-columns:110px 1fr;gap:18px;padding:18px;border-radius:var(--radius-card);background:var(--surface-blue);border:1px solid var(--line)}.anchor-card img{width:110px;height:130px;object-fit:cover;border-radius:16px}.anchor-card h3{margin:3px 0;font-size:21px}.anchor-card strong{font-size:13px;color:var(--primary)}.anchor-card p{margin:7px 0;color:var(--text-2);font-size:13px}.anchor-card small{color:var(--text-3)}.status-dot{font-size:11px;color:var(--accent);font-weight:800}.discussion-card{display:grid;grid-template-columns:44px 1fr;gap:14px;padding:20px 0;border-bottom:1px solid var(--line)}.avatar-chip{width:44px;height:44px;border-radius:50%;display:grid;place-items:center;background:var(--sky-light);font-weight:800;color:var(--navy)}.discussion-card h3{margin:3px 0 7px}.discussion-card p{margin:0 0 10px;color:var(--text-2)}.faq-list{display:grid;gap:10px}.faq-item{border:1px solid var(--line);background:#fff;border-radius:14px;padding:0 18px}.faq-item summary{cursor:pointer;font-weight:750;padding:16px 30px 16px 0;position:relative}.faq-item summary::marker{content:""}.faq-item summary:after{content:"+";position:absolute;right:0;top:12px;font-size:24px;color:var(--primary)}.faq-item[open] summary:after{content:"−"}.faq-answer{padding:0 0 16px;color:var(--text-2)}.faq-answer p{margin:0}.stats-strip{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}.stat{padding:20px;background:rgba(255,255,255,.76);border-radius:16px;border:1px solid var(--line)}.stat strong{font-size:28px;color:var(--primary);display:block}.stat small{color:var(--text-2)}
.site-footer{background:var(--navy);color:#fff;padding:70px 0 30px;margin-top:50px}.footer-lead{display:grid;grid-template-columns:1.3fr .7fr;gap:36px;padding-bottom:42px;border-bottom:1px solid rgba(255,255,255,.12)}.footer-lead h2{font-size:clamp(30px,4vw,52px);line-height:1.1;margin:8px 0}.footer-lead p{color:#c8d9e4}.footer-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:24px;padding:42px 0}.footer-grid div{display:grid;gap:8px;align-content:start}.footer-grid h3{font-size:14px;color:var(--sky-light);margin:0 0 7px}.footer-grid a{font-size:13px;color:#d9e7ef}.footer-grid a:hover{color:#fff}.footer-bottom{display:flex;justify-content:space-between;gap:20px;border-top:1px solid rgba(255,255,255,.12);padding-top:20px;color:#a9c1ce;font-size:12px}.footer-bottom p{margin:0}.footer-bottom div{display:flex;gap:14px}.mobile-bottom{display:none}.back-top{position:fixed;right:20px;bottom:24px;width:44px;height:44px;border:0;border-radius:50%;background:var(--navy);color:#fff;box-shadow:var(--shadow);opacity:0;pointer-events:none;transform:translateY(8px);transition:.2s;z-index:40}.back-top.is-visible{opacity:1;pointer-events:auto;transform:none}
@media(max-width:1100px){.main-nav{display:none}.header-inner{height:70px}.header-actions{margin-left:auto}.hero-grid,.content-sidebar,.split-feature,.split-feature.reverse,.device-showcase{grid-template-columns:1fr}.split-feature.reverse .feature-media{order:0}.hero-visual{max-width:760px}.grid-4,.grid-5{grid-template-columns:repeat(2,1fr)}.grid-3{grid-template-columns:repeat(2,1fr)}.steps{grid-template-columns:repeat(2,1fr)}.footer-grid{grid-template-columns:repeat(3,1fr)}.device-showcase img{max-width:360px}.sticky-side{position:static}.magazine-grid{grid-template-columns:1.4fr 1fr}.magazine-grid>*:first-child{grid-row:auto;grid-column:1/-1}.bento-grid>*{grid-column:span 6}.bento-grid>*.wide{grid-column:span 12}}
@media(max-width:720px){.wrap{width:min(100% - 28px,var(--wrap))}.top-notice{display:none}.site-header{top:0}.brand{min-width:0}.brand span{display:none}.header-actions .action-link,.header-actions .app-link{display:none}.header-inner{height:62px}.section{padding:54px 0}.section-sm{padding:34px 0}.section-head-row{align-items:flex-start;flex-direction:column}.hero{padding:50px 0 40px}.hero-grid{gap:30px}.hero h1{font-size:44px}.floating-panel{position:relative;left:0;bottom:0;width:100%;margin-top:12px}.hero-search{display:grid;grid-template-columns:1fr}.grid-2,.grid-3,.grid-4,.grid-5,.steps,.compare-grid,.footer-lead{grid-template-columns:1fr}.grid-4.mobile-2,.grid-5.mobile-2{grid-template-columns:repeat(2,1fr)}.rail{grid-auto-columns:82%}.avatar-rail{grid-auto-columns:136px}.waterfall{columns:1}.bento-grid{grid-template-columns:1fr}.bento-grid>*,.bento-grid>*.wide{grid-column:auto}.editor-note{grid-template-columns:1fr}.anchor-card{grid-template-columns:78px 1fr}.anchor-card img{width:78px;height:94px}.search-modal{padding:20px 12px;align-items:center}.search-dialog{padding:22px}.search-form{grid-template-columns:1fr}.mega-grid{grid-template-columns:repeat(2,1fr);gap:20px;max-height:70vh;overflow:auto}.footer-grid{grid-template-columns:repeat(2,1fr)}.footer-bottom{flex-direction:column;padding-bottom:72px}.mobile-bottom{position:fixed;display:grid;grid-template-columns:repeat(5,1fr);left:10px;right:10px;bottom:10px;z-index:45;background:rgba(255,253,248,.94);backdrop-filter:blur(14px);border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow);padding:8px}.mobile-bottom a{display:grid;justify-items:center;font-size:10px;color:var(--text-2)}.mobile-bottom span{font-size:16px;color:var(--primary)}.back-top{bottom:82px}.compact-video{grid-template-columns:auto 90px 1fr}.compact-video>img{width:90px}.stats-strip{grid-template-columns:repeat(2,1fr)}}