:root{--bg:#080b12;--panel:#111620;--text:#f5f4f0;--muted:#9ca2ad;--orange:#69b9ff;--line:rgba(255,255,255,.1)}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--text);font-family:Manrope,"Noto Sans SC",sans-serif;overflow-x:hidden}.grain{position:fixed;inset:0;pointer-events:none;opacity:.055;z-index:9;background-image:url("data:image/svg+xml,%3Csvg viewBox='0 0 180 180' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.7'/%3E%3C/svg%3E")}.shell{width:min(1180px,calc(100% - 44px));margin:auto}.nav{height:86px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line);position:relative;z-index:3}.brand{display:flex;align-items:center;gap:12px;color:#fff;text-decoration:none;font-size:20px;font-weight:800}.brand-logo{width:43px;height:43px;object-fit:contain;filter:drop-shadow(0 5px 12px rgba(255,173,102,.2))}.brand small{font-size:10px;font-weight:500;letter-spacing:.18em;color:#69b9ff;margin-left:8px;white-space:nowrap}.nav nav{display:flex;gap:34px}.nav nav a,.nav-download{color:#b6bbc4;text-decoration:none;font-size:14px}.nav nav a:hover{color:#fff}.nav-download{border:1px solid #3a3f48;padding:10px 16px;border-radius:50px;color:#fff}.hero{min-height:700px;display:grid;grid-template-columns:.88fr 1.12fr;align-items:center;gap:34px;padding-top:50px;padding-bottom:72px}.eyebrow{font-size:12px;letter-spacing:.2em;text-transform:uppercase;color:#b8bdc6;font-weight:700}.eyebrow span{display:inline-block;width:28px;height:2px;background:var(--orange);vertical-align:middle;margin-right:9px}.hero h1,.section h2{font-size:clamp(54px,6vw,88px);line-height:1.02;letter-spacing:-.055em;margin:24px 0}.hero h1 em,.closing h2 em{font-style:normal;color:var(--orange)}.lead{font-size:18px;line-height:1.85;color:var(--muted);max-width:520px}.hero-actions{display:flex;gap:12px;margin-top:36px}.button{display:inline-flex;align-items:center;gap:14px;padding:15px 21px;border-radius:10px;text-decoration:none;font-weight:700;font-size:14px;transition:.25s}.primary{background:var(--orange);color:#071a2b;box-shadow:0 12px 40px rgba(105,185,255,.18)}.primary:hover{transform:translateY(-2px);background:#91ccff}.secondary{border:1px solid var(--line);color:#fff}.region-note{margin-top:25px;font-size:12px;color:#868c97}.region-note strong{color:#b6ddff;margin-right:6px}.product-stage{height:540px;position:relative;display:flex;align-items:center;justify-content:center}.ambient{position:absolute;border-radius:50%;filter:blur(60px)}.a1{width:330px;height:330px;background:rgba(105,185,255,.16);right:0;top:55px}.a2{width:210px;height:210px;background:rgba(145,204,255,.11);left:50px;bottom:40px}.tv{width:92%;position:relative;z-index:1;transform:perspective(900px) rotateY(-5deg) rotateX(2deg)}.screen{aspect-ratio:16/9;border:7px solid #242731;border-radius:18px;background:radial-gradient(circle at 74% 30%,rgba(105,185,255,.30),transparent 29%),linear-gradient(135deg,#131721,#10243a 70%,#0d1017);box-shadow:0 45px 80px #000;padding:24px;position:relative;overflow:hidden}.screen:before{content:"";position:absolute;inset:0;background:linear-gradient(105deg,transparent 44%,rgba(255,255,255,.08) 45%,transparent 46%)}.screen-top,.screen-bottom{display:flex;justify-content:space-between;font-size:10px;color:#d7d8dc;position:relative;z-index:2}.preview-copy{position:absolute;left:43%;top:36%;display:flex;flex-direction:column}.preview-copy span{font-size:9px;color:#8bcaff;text-transform:uppercase;letter-spacing:.18em}.preview-copy strong{font-size:32px;margin-top:4px}.preview-copy small{color:#aaa}.channel-panel{position:absolute;left:0;top:0;bottom:0;width:43%;display:grid;grid-template-columns:.85fr 1.15fr;background:rgba(5,7,10,.84);backdrop-filter:blur(16px);padding-top:65px}.groups,.channels{display:flex;flex-direction:column}.groups span,.channels span{padding:12px 15px;font-size:10px;color:#b4b7be}.groups span.active{color:var(--orange);border-left:2px solid var(--orange)}.channels{background:rgba(255,255,255,.035)}.channels span.active{background:var(--orange);color:#071a2b;font-weight:800}.channels i{font-style:normal;font-size:7px;float:right}.screen-bottom{position:absolute;bottom:15px;right:20px;gap:20px}.tv-foot{width:30%;height:14px;background:#242731;margin:auto;clip-path:polygon(40% 0,60% 0,100% 100%,0 100%)}.remote{position:absolute;right:0;bottom:24px;width:58px;height:155px;border-radius:30px;background:linear-gradient(#30343d,#11141a);transform:rotate(-13deg);box-shadow:0 20px 40px #000;z-index:2;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:10px;color:#757b86}.remote span{position:absolute;top:14px;width:10px;height:10px;border-radius:50%;background:var(--orange)}.remote i{font-style:normal;font-size:9px}.ticker{border-block:1px solid var(--line);overflow:hidden;padding:19px 0;color:#c8cbd0}.ticker div{display:flex;justify-content:center;gap:35px;white-space:nowrap;font-size:12px;letter-spacing:.12em}.ticker b{color:var(--orange)}.section{padding-top:120px;padding-bottom:120px}.section-head{display:flex;align-items:flex-end;justify-content:space-between;margin-bottom:45px}.section-head h2,.guide h2,.closing h2{font-size:clamp(42px,5vw,70px);max-width:740px}.feature-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}.feature{min-height:370px;padding:30px;background:linear-gradient(145deg,#151a24,#0e1118);border:1px solid var(--line);border-radius:18px;position:relative;overflow:hidden;display:flex;flex-direction:column;justify-content:flex-end}.feature-main{grid-row:span 2;min-height:754px}.feature-wide{grid-column:span 2;min-height:260px;display:grid;grid-template-columns:1fr 1fr;align-items:end;gap:40px}.num{position:absolute;top:25px;right:28px;color:#555b65;font-size:12px}.feature h3{font-size:25px;margin:25px 0 8px}.feature p{color:var(--muted);line-height:1.75;margin:0;max-width:500px}.mini-list{position:absolute;left:15%;right:15%;top:80px;background:#090c12;border:1px solid #2a2e38;border-radius:12px;padding:18px;box-shadow:0 25px 50px #000}.mini-list b,.mini-list span{display:block;padding:15px 17px;border-radius:7px;font-size:13px}.mini-list .on{color:#071a2b;background:var(--orange);font-weight:700}.wave{display:flex;align-items:center;gap:7px;height:110px;margin-bottom:25px}.wave i{width:10px;border-radius:8px;background:var(--orange);height:30%}.wave i:nth-child(2){height:70%}.wave i:nth-child(3){height:44%}.wave i:nth-child(4){height:88%}.wave i:nth-child(5){height:52%}.wave i:nth-child(6){height:24%}.heart{font-size:74px;color:var(--orange);text-shadow:0 0 45px rgba(105,185,255,.3);margin-bottom:25px}.url-pill{border:1px solid #353b46;border-radius:11px;padding:17px;display:flex;align-items:center;gap:13px;color:#747b87;font-family:monospace;overflow:hidden}.url-pill i{width:8px;height:8px;background:#46d98e;border-radius:50%;flex:none}.url-pill span{white-space:nowrap;overflow:hidden}.url-pill b{color:#fff;margin-left:auto}.guide{background:#f1eee8;color:#11141a}.guide-inner{display:grid;grid-template-columns:1fr 1fr;gap:70px}.guide .eyebrow{color:#555}.guide ol{list-style:none;margin:0;padding:0}.guide li{display:flex;gap:26px;padding:28px 0;border-bottom:1px solid #cbc7bf}.guide li>b{font-size:13px;color:var(--orange)}.guide li div{display:flex;flex-direction:column;gap:8px}.guide li strong{font-size:20px}.guide li span{color:#6b6a67}.faq-list{border-top:1px solid var(--line)}details{border-bottom:1px solid var(--line);padding:0 3px}summary{list-style:none;cursor:pointer;padding:25px 0;font-size:18px;font-weight:600;display:flex;justify-content:space-between}summary::-webkit-details-marker{display:none}summary i{font-style:normal;color:var(--orange);transition:.2s}details[open] summary i{transform:rotate(45deg)}details p{color:var(--muted);max-width:780px;line-height:1.8;padding-bottom:24px;margin:0}.closing{text-align:center;border-top:1px solid var(--line)}.closing h2{margin:30px auto 40px}.closing .button{margin:auto}.closing small{display:block;color:#777e89;margin-top:24px}footer{min-height:110px;border-top:1px solid var(--line);display:flex;justify-content:space-between;align-items:center;color:#737984;font-size:12px}.toast{position:fixed;left:50%;bottom:30px;transform:translate(-50%,20px);background:#fff;color:#111;padding:12px 18px;border-radius:8px;font-size:13px;opacity:0;pointer-events:none;transition:.25s;z-index:10}.toast.show{opacity:1;transform:translate(-50%,0)}@media(max-width:850px){.nav nav{display:none}.hero{grid-template-columns:1fr;padding-top:90px}.product-stage{height:430px}.hero h1{font-size:58px}.feature-grid{grid-template-columns:1fr}.feature-main,.feature-wide{grid-column:auto;grid-row:auto;min-height:440px}.feature-wide{display:flex}.guide-inner{grid-template-columns:1fr}.section-head{display:block}.section{padding-block:80px}.ticker div{justify-content:flex-start;animation:marquee 16s linear infinite}@keyframes marquee{to{transform:translateX(-55%)}}}@media(max-width:560px){.shell{width:min(100% - 28px,1180px)}.nav{height:70px}.nav-download{font-size:0}.nav-download:before{content:"下载";font-size:13px}.hero{padding-top:60px;min-height:auto}.hero h1{font-size:48px}.lead{font-size:16px}.product-stage{height:320px}.tv{width:100%}.remote{display:none}.screen{padding:15px}.preview-copy strong{font-size:19px}.channel-panel{padding-top:40px}.groups span,.channels span{padding:7px;font-size:7px}.feature{padding:22px}.feature-wide{min-height:350px}.guide h2,.section-head h2,.closing h2{font-size:42px}.section-head h2{margin-top:20px}footer{align-items:flex-start;justify-content:center;flex-direction:column;gap:10px}.hero-actions{flex-direction:column;align-items:stretch;text-align:center}}




/* Mobile-first refinements */
.mobile-download{display:none}
@media(max-width:700px){
  body{padding-bottom:76px}
  .shell{width:calc(100% - 32px)}
  .nav{height:68px}
  .brand{gap:8px;font-size:17px}
  .brand-logo{width:36px;height:36px}
  .brand small{display:block;margin:1px 0 0;font-size:8px;letter-spacing:.12em}
  .nav>.nav-download{display:none}
  .hero{display:block;min-height:0;padding:54px 0 44px}
  .eyebrow{font-size:10px;letter-spacing:.16em}
  .hero h1{font-size:clamp(42px,13vw,58px);line-height:1.06;margin:20px 0}
  .lead{font-size:15px;line-height:1.75}
  .hero-actions{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:28px}
  .button{justify-content:center;padding:14px 12px;font-size:13px}
  .region-note{line-height:1.65;margin-top:18px}
  .product-stage{height:290px;margin-top:30px}
  .tv{width:108%;transform:perspective(900px) rotateY(-3deg) rotateX(1deg)}
  .screen{border-width:4px;border-radius:11px;padding:12px}
  .screen-top{font-size:7px}
  .channel-panel{width:49%;grid-template-columns:.92fr 1.08fr;padding-top:35px}
  .preview-copy{left:53%;top:34%}
  .preview-copy strong{font-size:18px}
  .preview-copy span,.preview-copy small{font-size:7px}
  .groups span,.channels span{padding:7px 6px;font-size:6px}
  .screen-bottom{font-size:6px;right:9px;bottom:8px;gap:8px}
  .ticker{padding:15px 0}
  .ticker div{gap:24px;font-size:10px}
  .section{padding-top:72px;padding-bottom:72px}
  .section-head{margin-bottom:28px}
  .section-head h2,.guide h2,.closing h2{font-size:39px;line-height:1.12;letter-spacing:-.04em;margin:18px 0}
  .feature-grid{gap:10px}
  .feature{min-height:320px;border-radius:14px;padding:22px}
  .feature-main{min-height:430px}
  .feature-wide{min-height:330px;display:flex;gap:22px}
  .feature h3{font-size:21px}
  .feature p{font-size:14px}
  .mini-list{left:8%;right:8%;top:62px;padding:12px}
  .mini-list b,.mini-list span{padding:12px;font-size:11px}
  .guide-inner{gap:20px}
  .guide li{gap:18px;padding:22px 0}
  .guide li strong{font-size:18px}
  .guide li span{font-size:14px;line-height:1.6}
  summary{font-size:16px;line-height:1.5;padding:21px 0;gap:12px}
  details p{font-size:14px}
  .closing{padding-bottom:90px}
  footer{padding:24px 0;min-height:120px;font-size:11px;line-height:1.6}
  .mobile-download{display:flex;position:fixed;z-index:8;left:14px;right:14px;bottom:12px;height:52px;border-radius:12px;align-items:center;justify-content:center;gap:12px;background:#69b9ff;color:#071a2b;text-decoration:none;font-size:15px;font-weight:800;box-shadow:0 12px 34px rgba(0,0,0,.45)}
}
@media(max-width:380px){
  .brand small{display:none}
  .hero-actions{grid-template-columns:1fr}
  .hero h1{font-size:40px}
  .section-head h2,.guide h2,.closing h2{font-size:35px}
}