:root{
    --bg:#0c0a10;
    --tape:#191320;
    --tape-2:#221a2c;
    --text:#f3e9dc;
    --muted:#a99f92;
    --red:#e50914;
    --amber:#ffb35c;
    --cyan:#57e0ff;
    --line:rgba(243,233,220,.12);
    --mono:"Courier New",Courier,"Lucida Console",monospace;
  }
  *{box-sizing:border-box;margin:0;padding:0}
  html{scroll-behavior:smooth}
  body{
    background:var(--bg);
    color:var(--text);
    font-family:var(--mono);
    line-height:1.65;
    -webkit-font-smoothing:antialiased;
    overflow-x:hidden;
  }
  img{display:block;max-width:100%}
  a{color:inherit;text-decoration:none}
  section{scroll-margin-top:86px}
  .wrap{width:100%;max-width:1180px;margin:0 auto;padding:0 20px}

  /* CRT 覆盖层 */
  .crt{
    position:fixed;inset:0;z-index:60;pointer-events:none;
    background:repeating-linear-gradient(to bottom,rgba(255,255,255,.035) 0 1px,transparent 1px 3px);
    mix-blend-mode:overlay;
  }
  .vignette{
    position:fixed;inset:0;z-index:59;pointer-events:none;
    background:radial-gradient(ellipse at center,transparent 55%,rgba(0,0,0,.72) 100%);
  }

  /* 吸顶导航 */
  .site-head{
    position:sticky;top:0;z-index:50;
    background:rgba(12,10,16,.94);
    border-bottom:1px solid var(--line);
  }
  .site-head::before{
    content:"";position:absolute;top:0;left:0;width:100vw;height:100%;
    background:rgba(12,10,16,.94);z-index:-1;
  }
  .head-inner{
    display:flex;align-items:center;justify-content:space-between;
    gap:16px;min-height:66px;
  }
  .brand{display:flex;align-items:center;gap:12px;flex-shrink:0}
  .brand img{height:34px;width:auto}
  .brand-name{font-size:15px;letter-spacing:.14em;white-space:nowrap}
  .brand-name em{font-style:normal;color:var(--red)}
  .brand-sub{display:block;font-size:9px;letter-spacing:.34em;color:var(--muted)}

  .nav-desk{display:flex;align-items:center;gap:22px;list-style:none}
  .nav-desk a{
    font-size:11px;letter-spacing:.18em;color:var(--muted);
    padding:6px 2px;transition:color .25s;
  }
  .nav-desk a:hover,.nav-desk a.active{color:var(--amber)}

  .nav-toggle{
    display:none;align-items:center;gap:8px;
    background:transparent;border:1px solid var(--amber);color:var(--amber);
    font-family:var(--mono);font-size:11px;letter-spacing:.2em;
    padding:8px 14px;cursor:pointer;
  }
  .nav-panel{
    display:none;flex-direction:column;
    border-top:1px solid var(--line);background:var(--bg);
  }
  .nav-panel.open{display:flex}
  .nav-panel a{
    padding:14px 20px;font-size:12px;letter-spacing:.2em;
    color:var(--text);border-bottom:1px solid var(--line);
  }
  .nav-panel a:active{color:var(--amber)}

  /* 通用标题 */
  .sec-head{margin-bottom:34px}
  .sec-kicker{
    display:inline-block;font-size:10px;letter-spacing:.34em;
    color:var(--amber);border:1px solid rgba(255,179,92,.4);
    padding:4px 10px;margin-bottom:12px;
  }
  .sec-title{
    font-size:clamp(24px,3.6vw,38px);letter-spacing:.06em;line-height:1.2;
    text-shadow:3px 0 rgba(229,9,20,.55),-3px 0 rgba(87,224,255,.5);
  }
  .sec-desc{color:var(--muted);font-size:13px;margin-top:10px;max-width:640px}

  /* 1 主视觉 */
  .hero{padding:44px 0 60px;border-bottom:1px solid var(--line)}
  .hero-grid{display:grid;grid-template-columns:1.25fr .9fr;gap:38px;align-items:center}
  .tv-frame{
    border:2px solid #2c2338;background:#05040a;
    box-shadow:0 0 0 8px #120e18,0 18px 50px rgba(0,0,0,.7);
    padding:10px;
  }
  .tv-screen{position:relative;aspect-ratio:16/10;overflow:hidden;background:#000}
  .tv-screen img{width:100%;height:100%;object-fit:cover;filter:contrast(1.08) saturate(1.15)}
  .tv-bar{
    display:flex;align-items:center;gap:12px;
    margin-top:10px;font-size:10px;letter-spacing:.15em;color:var(--muted);
  }
  .tv-bar .play{color:var(--red);font-size:14px}
  .tv-progress{flex:1;height:3px;background:rgba(243,233,220,.16);position:relative}
  .tv-progress span{position:absolute;left:0;top:0;height:100%;width:34%;background:var(--amber)}
  .hero-title{
    font-size:clamp(46px,8vw,86px);line-height:.95;letter-spacing:.1em;
    text-shadow:4px 0 var(--red),-4px 0 var(--cyan);
  }
  .stamp{
    display:inline-block;margin:16px 0 18px;
    border:2px solid var(--red);color:var(--red);
    font-size:10px;letter-spacing:.26em;padding:4px 10px;
    transform:rotate(-2deg);
  }
  .hero-lead{color:var(--muted);font-size:13px;max-width:420px}
  .spec-row{display:flex;flex-wrap:wrap;gap:8px;margin:20px 0 26px}
  .spec-row span{
    font-size:10px;letter-spacing:.14em;color:var(--text);
    border:1px dashed rgba(243,233,220,.3);padding:4px 9px;
  }
  .btn-row{display:flex;flex-wrap:wrap;gap:12px}
  .btn{
    display:inline-block;font-family:var(--mono);font-size:12px;letter-spacing:.2em;
    padding:13px 26px;border:1px solid var(--red);background:var(--red);color:#fff;
    transition:transform .2s,box-shadow .2s,background .2s;
  }
  .btn:hover{transform:translateY(-2px);box-shadow:0 8px 24px rgba(229,9,20,.4)}
  .btn-ghost{background:transparent;color:var(--amber);border-color:var(--amber)}
  .btn-ghost:hover{background:rgba(255,179,92,.1);box-shadow:0 8px 24px rgba(255,179,92,.22)}

  /* 磁带架 */
  .shelf{padding:64px 0;border-bottom:1px solid var(--line)}
  .tape-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:18px}
  .tape{
    position:relative;background:var(--tape);border:1px solid var(--line);
    padding:8px 8px 0;transition:border-color .25s,transform .25s;
  }
  .tape:hover{border-color:var(--amber);transform:translateY(-5px)}
  .tape-no{
    position:absolute;top:12px;left:12px;z-index:2;
    background:#05040a;color:var(--amber);
    font-size:9px;letter-spacing:.2em;padding:2px 6px;
  }
  .tape-thumb{aspect-ratio:3/4;overflow:hidden;background:#05040a}
  .tape-thumb img{width:100%;height:100%;object-fit:cover;filter:brightness(.78);transition:filter .3s}
  .tape:hover .tape-thumb img{filter:brightness(1.06)}
  .tape-label{
    background:#efe3cf;color:#141018;padding:9px 10px 11px;margin:0 -8px;
  }
  .tape-label strong{display:block;font-size:13px;letter-spacing:.06em}
  .tape-label small{display:block;font-size:9px;letter-spacing:.2em;color:#6b5d50;margin-top:2px}

  /* 片库墙 */
  .library{padding:64px 0;border-bottom:1px solid var(--line)}
  .lib-grid{display:grid;grid-template-columns:1fr 1fr;gap:34px;align-items:center}
  .lib-shot{border:1px solid var(--line);background:var(--tape);padding:9px}
  .lib-shot img{width:100%;aspect-ratio:4/3;object-fit:cover}
  .tip-list{list-style:none;margin-top:18px}
  .tip-list li{
    display:flex;gap:12px;padding:13px 0;border-bottom:1px dashed var(--line);
    font-size:13px;color:var(--muted);
  }
  .tip-list b{color:var(--amber);font-size:11px;letter-spacing:.2em;flex-shrink:0;padding-top:3px}
  .mini-row{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-top:22px}
  .mini-row img{width:100%;aspect-ratio:1;object-fit:cover;border:1px solid var(--line)}

  /* TOP 榜 */
  .top05{padding:64px 0;border-bottom:1px solid var(--line)}
  .rank-row{
    display:flex;align-items:center;gap:16px;padding:12px 0;
    border-bottom:1px solid var(--line);
  }
  .rank-no{font-size:15px;color:var(--red);letter-spacing:.1em;width:34px;flex-shrink:0}
  .rank-thumb{width:44px;height:58px;object-fit:cover;flex-shrink:0;border:1px solid var(--line)}
  .rank-info{flex:1;min-width:0}
  .rank-info strong{font-size:14px;display:block;letter-spacing:.06em}
  .rank-info small{font-size:10px;letter-spacing:.2em;color:var(--muted)}
  .heat{width:120px;height:5px;background:rgba(243,233,220,.14);flex-shrink:0}
  .heat span{display:block;height:100%;background:var(--red)}
  .rank-pct{font-size:11px;color:var(--amber);width:48px;text-align:right;flex-shrink:0}

  /* 分类 */
  .genre{padding:64px 0;border-bottom:1px solid var(--line)}
  .genre-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
  .genre-card{position:relative;overflow:hidden;border:1px solid var(--line);aspect-ratio:4/5;background:#05040a}
  .genre-card img{width:100%;height:100%;object-fit:cover;filter:brightness(.72);transition:filter .3s,transform .4s}
  .genre-card:hover img{filter:brightness(.98);transform:scale(1.05)}
  .genre-cap{
    position:absolute;left:0;right:0;bottom:0;padding:14px 12px;
    background:linear-gradient(to top,rgba(5,4,10,.95),transparent);
  }
  .genre-cap strong{display:block;font-size:15px;letter-spacing:.1em}
  .genre-cap small{font-size:9px;letter-spacing:.24em;color:var(--amber)}

  /* 使用指南 */
  .manual{padding:64px 0;border-bottom:1px solid var(--line)}
  .man-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:36px;align-items:start}
  .man-tv{border:2px solid #2c2338;background:#05040a;padding:10px;box-shadow:0 0 0 8px #120e18}
  .man-tv img{width:100%;aspect-ratio:16/10;object-fit:cover}
  .man-tv p{font-size:11px;color:var(--muted);letter-spacing:.14em;margin-top:10px}
  .step{padding:15px 0;border-bottom:1px solid var(--line)}
  .step h3{font-size:14px;letter-spacing:.08em;margin-bottom:5px}
  .step h3 span{color:var(--red);margin-right:8px}
  .step p{font-size:12px;color:var(--muted)}
  .step p em{font-style:normal;color:var(--amber)}

  /* FAQ */
  .faq{padding:64px 0;border-bottom:1px solid var(--line)}
  .faq-group{margin-bottom:30px}
  .faq-group > h3{
    font-size:12px;letter-spacing:.26em;color:var(--amber);
    margin-bottom:12px;padding-bottom:8px;border-bottom:1px solid rgba(255,179,92,.28);
  }
  details{border-bottom:1px solid var(--line);padding:12px 0}
  summary{cursor:pointer;font-size:13px;letter-spacing:.04em;list-style:none;position:relative;padding-right:24px}
  summary::-webkit-details-marker{display:none}
  summary::after{content:"+";position:absolute;right:0;top:0;color:var(--red)}
  details[open] summary::after{content:"−"}
  details p{font-size:12px;color:var(--muted);margin-top:9px;line-height:1.8}
  details img{width:100%;max-width:320px;margin-top:10px;border:1px solid var(--line)}

  /* 跑马灯 */
  .marquee{
    overflow:hidden;background:var(--tape);border-top:1px solid var(--line);
    border-bottom:1px solid var(--line);padding:14px 0;white-space:nowrap;
  }
  .marquee-track{display:inline-block;animation:marq 26s linear infinite}
  .marquee-track span{
    font-size:13px;letter-spacing:.3em;color:var(--amber);
    padding:0 18px;
  }
  .marquee-track span b{color:var(--red);font-weight:400}
  @keyframes marq{from{transform:translateX(0)}to{transform:translateX(-50%)}}

  /* 下载 */
  .download{padding:70px 0;border-bottom:1px solid var(--line)}
  .dl-box{
    border:1px solid var(--amber);padding:40px 30px;text-align:center;
    background:linear-gradient(180deg,rgba(255,179,92,.06),transparent);
  }
  .dl-box h2{font-size:clamp(22px,3.4vw,32px);letter-spacing:.08em;text-shadow:3px 0 rgba(229,9,20,.5),-3px 0 rgba(87,224,255,.45)}
  .dl-box p{color:var(--muted);font-size:13px;margin:14px auto 26px;max-width:520px}
  .dl-box .btn-row{justify-content:center}

  /* 页脚 */
  .site-foot{padding:34px 0 40px;font-size:11px;color:#7b7268;letter-spacing:.06em}
  .foot-inner{display:flex;flex-wrap:wrap;gap:10px 26px;align-items:center;justify-content:space-between}
  .site-foot a{color:#8d8378;border-bottom:1px dotted #4a443c}
  .site-foot time{color:#8d8378}

  /* 响应式 */
  @media (max-width:1024px){
    .hero-grid{grid-template-columns:1fr;gap:30px}
    .tape-grid{grid-template-columns:repeat(3,1fr)}
    .lib-grid{grid-template-columns:1fr;gap:26px}
    .genre-grid{grid-template-columns:repeat(2,1fr)}
    .man-grid{grid-template-columns:1fr;gap:26px}
    .heat{width:80px}
  }
  @media (max-width:900px){
    .nav-desk{display:none}
    .nav-toggle{display:inline-flex}
  }
  @media (max-width:768px){
    .head-inner{min-height:58px}
    .brand img{height:28px}
    .brand-sub{display:none}
    .hero{padding:28px 0 44px}
    .tape-grid{grid-template-columns:repeat(2,1fr);gap:12px}
    .genre-grid{gap:10px}
    .rank-row{gap:10px}
    .rank-info strong{font-size:12px}
    .heat{display:none}
    .rank-pct{width:40px;font-size:10px}
    .dl-box{padding:30px 18px}
    .btn{padding:12px 20px;font-size:11px}
    .foot-inner{flex-direction:column;align-items:flex-start;gap:8px}
  }