/* ---------- Docker section ---------- */
  .docker{background:linear-gradient(180deg,#F4F7FA 0%,#EAF1F8 100%);border-top:1px solid var(--line)}
  .docker-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:40px;align-items:start}
  .docker-grid>*{min-width:0}
  .why{display:grid;gap:14px;margin-top:1.4rem}
  .why>div{display:grid;grid-template-columns:36px 1fr;gap:12px;align-items:start}
  .why .g{width:36px;height:36px;border-radius:9px;background:#fff;border:1px solid var(--line);display:grid;place-items:center;color:var(--html)}
  .why b{display:block;margin-bottom:.15rem}
  .why p{margin:0;font-size:.92rem;color:var(--ink-soft)}
  .term{background:var(--code-bg);border-radius:12px;box-shadow:0 24px 60px rgba(34,48,63,.18);overflow:hidden}
  .term .bar{display:flex;align-items:center;gap:6px;padding:9px 12px;background:#242F3D;border-bottom:1px solid #2E3A4A}
  .term .bar i{width:10px;height:10px;border-radius:50%;background:#3B4757;display:block}
  .term .bar i:first-child{background:var(--pdf)} .term .bar i:nth-child(2){background:#F1B33C} .term .bar i:nth-child(3){background:var(--html)}
  .term .bar span{margin-left:auto;font-family:var(--mono);font-size:.72rem;color:#8B98A8}
  .term pre{margin:0;padding:16px 18px;font-family:var(--mono);font-size:.78rem;line-height:1.55;color:var(--code-fg);overflow:auto;white-space:pre}
  .term .c{color:#8B98A8} .term .i{color:#7FB8F0} .term .s{color:#F5B266} .term .ok{color:#9FD8A8}
  .cmds{display:grid;gap:10px;margin-top:14px}
  .cmd{display:grid;grid-template-columns:28px 1fr;gap:10px;align-items:center;background:#fff;border:1px solid var(--line);border-radius:8px;padding:10px 12px;font-family:var(--mono);font-size:.8rem;overflow:auto}
  .cmd b{display:grid;place-items:center;width:24px;height:24px;border-radius:50%;background:var(--ink);color:#fff;font:700 .75rem var(--sans)}
  .arch{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}
  .arch span{font-family:var(--mono);font-size:.75rem;font-weight:700;padding:.3rem .55rem;border-radius:5px;background:#fff;border:1px solid var(--line);color:var(--ink-soft)}
  @media (max-width:960px){.docker-grid{grid-template-columns:1fr}}
  /* ---------- Reveal on scroll ---------- */
  .js .reveal{opacity:0;transform:translateY(22px);transition:opacity .6s ease,transform .6s ease}
  .js .reveal.in{opacity:1;transform:none}
  .js .reveal.d1{transition-delay:.1s}.js .reveal.d2{transition-delay:.2s}.js .reveal.d3{transition-delay:.3s}.js .reveal.d4{transition-delay:.4s}
  @media (prefers-reduced-motion:reduce){.js .reveal{opacity:1;transform:none;transition:none}}
  .why{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
  .why li{display:grid;grid-template-columns:38px 1fr;gap:12px;padding:16px;border:1px solid var(--line);border-radius:var(--radius);background:#fff}
  .why .ic{width:38px;height:38px;border-radius:9px;background:#E6F0FA;color:var(--html);display:grid;place-items:center}
  .why b{display:block;margin-bottom:.2rem}
  .why span{font-size:.9rem;color:var(--ink-soft)}
  .dockerfile{border-radius:var(--radius);overflow:hidden;background:var(--code-bg)}
  .dockerfile .bar{display:flex;align-items:center;gap:6px;padding:8px 12px;background:#111821;border-bottom:1px solid rgba(255,255,255,.08);font-family:var(--mono);font-size:.78rem;color:#8B98A8}
  .dockerfile .bar i{width:10px;height:10px;border-radius:50%;background:#2A3542;display:block}
  .dockerfile pre{margin:0;padding:16px 18px;font-family:var(--mono);font-size:.78rem;line-height:1.55;color:#DCE4EC;overflow:auto;white-space:pre}
  .dockerfile .d{color:#7FB8F0} .dockerfile .c{color:#6B7A8A} .dockerfile .s{color:#F5B266}
  .cmds{display:grid;gap:8px}
  .cmds div{font-family:var(--mono);font-size:.8rem;padding:.6rem .8rem;border-radius:7px;background:var(--bg-alt);border:1px solid var(--line);white-space:pre-wrap;word-break:break-word}
  .cmds .k{color:var(--muted);margin-right:.5rem}
  .win-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}
  @media (max-width:960px){.why{grid-template-columns:1fr 1fr}.win-grid{grid-template-columns:1fr}}
  @media (max-width:600px){.why{grid-template-columns:1fr}}
  .draft{background:#FFF7E0;border:1px solid #F1D48A;color:#7A5A00;font-size:.85rem;padding:.6rem .9rem;border-radius:8px;margin-bottom:1rem}
  .lang-tabs{display:grid;grid-template-columns:200px 1fr;gap:20px;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:#fff}
  .lang-tabs .list{background:var(--bg-alt);border-right:1px solid var(--line);padding:10px}
  .lang-tabs label{display:block;padding:.6rem .8rem;border-radius:7px;font-weight:600;font-size:.92rem;cursor:pointer;color:var(--ink-soft)}
  .lang-tabs label small{display:block;font-weight:500;font-size:.76rem;color:var(--muted);font-family:var(--mono)}
  .lang-tabs input{position:absolute;opacity:0;pointer-events:none}
  .lang-tabs .panel{display:none;padding:18px 20px 20px 0}
  .lang-tabs .panel pre.code{margin:0}
  .lang-tabs .panel p{font-size:.9rem;color:var(--ink-soft);margin:.8rem 0 0}
  #l1:checked~.list label[for=l1],#l2:checked~.list label[for=l2],#l3:checked~.list label[for=l3],#l4:checked~.list label[for=l4],#l5:checked~.list label[for=l5]{background:#fff;color:var(--ink);box-shadow:0 1px 3px rgba(0,0,0,.08)}
  #l1:checked~.panels .p1,#l2:checked~.panels .p2,#l3:checked~.panels .p3,#l4:checked~.panels .p4,#l5:checked~.panels .p5{display:block}
  .arch{display:grid;grid-template-columns:1fr auto 1fr;gap:16px;align-items:center}
  .arch .box{border:1px solid var(--line);border-radius:var(--radius);padding:16px;background:#fff}
  .arch .box h3{font-size:.95rem;margin-bottom:.4rem}
  .arch .box ul{margin:0;padding-left:1rem;font-size:.88rem;color:var(--ink-soft)}
  @media (max-width:960px){.lang-tabs{grid-template-columns:1fr}.lang-tabs .list{border-right:0;border-bottom:1px solid var(--line);display:grid;grid-template-columns:1fr 1fr;gap:4px}.lang-tabs .panel{padding:16px}.arch{grid-template-columns:1fr}.arch .sw{transform:rotate(90deg);justify-self:center}}
  
  @media (max-width:480px){.install code{word-break:break-all;font-size:.78rem}}
  .card .fineprint{overflow-wrap:anywhere}
  .card code{overflow-wrap:anywhere}