:root {
      --bg: #0a0e17;
      --panel: #12182a;
      --line: #1e2d4a;
      --mint: #2eecc0;
      --mint-soft: rgba(46,236,192,0.1);
      --ember: #ff7a4d;
      --ink: #f2f6fc;
      --ink-2: #c5d0e0;
      --ink-3: #9aadc0;
      --font: "Inter", system-ui, sans-serif;
      --side: 220px;
    }
    *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
    html { scroll-behavior: smooth; }
    body {
      font-family: var(--font); background: var(--bg); color: var(--ink);
      line-height: 1.65; font-size: 16px; -webkit-font-smoothing: antialiased;
    }
    a { color: var(--mint); text-decoration: none; font-weight: 500; }
    a:hover { color: #6ef8dc; }
    .shell { max-width: 1140px; margin: 0 auto; padding: 0 20px; }

    /* Nav */
    .nav {
      position: sticky; top: 0; z-index: 100;
      background: rgba(10,14,23,0.92); backdrop-filter: blur(14px);
      border-bottom: 1px solid var(--line);
    }
    .nav-in {
      display: flex; align-items: center; justify-content: space-between;
      height: 60px; gap: 10px;
    }
    .nav-in img { height: 28px; }
    .nav-ul { display: flex; gap: 2px; list-style: none; }
    .nav-ul a {
      padding: 7px 13px; font-size: 0.84rem; font-weight: 500;
      color: var(--ink-3); border-radius: 8px; transition: 0.18s;
    }
    .nav-ul a:hover, .nav-ul a.on { color: var(--mint); background: var(--mint-soft); }
    .nav-r { display: flex; align-items: center; gap: 8px; }
    .nb {
      display: inline-flex; align-items: center; justify-content: center;
      font-size: 0.78rem; font-weight: 700; padding: 9px 16px; border-radius: 9px; transition: 0.18s;
    }
    .nb-o { border: 1px solid rgba(46,236,192,0.4); color: var(--mint); background: rgba(46,236,192,0.06); }
    .nb-p {
      background: linear-gradient(180deg, #3ef0cc, #18c9a5);
      color: #042318; font-weight: 800; text-transform: uppercase;
      box-shadow: 0 4px 14px rgba(46,236,192,0.25);
    }
    .nb-dl {
      background: linear-gradient(135deg, var(--ember), #ff9359);
      color: #fff; font-weight: 700; font-size: 0.88rem;
      padding: 13px 24px; border-radius: 11px;
      text-transform: uppercase; letter-spacing: 0.04em;
    }
    .nb-dl:hover { color: #fff; transform: translateY(-1px); }
    .nb-full { width: 100%; padding: 14px 28px; border-radius: 12px; font-size: 0.92rem; }
    .tog { display: none; background: none; border: none; cursor: pointer; padding: 8px; }
    .tog b { display: block; width: 20px; height: 2px; background: var(--mint); margin: 4px 0; border-radius: 2px; }
    .mob { display: none; padding: 6px 0 12px; border-top: 1px solid var(--line); }
    .mob.show { display: flex; flex-direction: column; }
    .mob a { padding: 11px 16px; color: var(--ink-2); border-bottom: 1px solid var(--line); font-weight: 500; }

    /* Top band — split hero + search */
    .top-band {
      padding: 32px 0 0;
      border-bottom: 1px solid var(--line);
      background: linear-gradient(180deg, rgba(46,236,192,0.05), transparent 70%);
    }
    .top-split {
      display: grid; grid-template-columns: 1fr 340px; gap: 28px; align-items: end;
      padding-bottom: 28px;
    }
    .top-text .path {
      font-size: 0.78rem; color: var(--ink-3); margin-bottom: 14px;
      display: flex; gap: 8px; align-items: center;
    }
    .top-text .path i { opacity: 0.45; font-style: normal; }
    .top-text h1 {
      font-size: clamp(1.4rem, 3.5vw, 1.95rem);
      font-weight: 800; line-height: 1.22; margin-bottom: 10px;
    }
    .top-text > p { font-size: 0.96rem; color: var(--ink-2); line-height: 1.72; max-width: 520px; }

    .search-panel {
      background: var(--panel); border: 1px solid var(--line);
      border-radius: 16px; padding: 20px 18px;
      box-shadow: 0 8px 32px rgba(0,0,0,0.25);
    }
    .search-panel .faq-search-label {
      display: block; font-size: 0.72rem; font-weight: 800;
      letter-spacing: 0.08em; text-transform: uppercase;
      color: var(--mint); margin-bottom: 10px;
    }
    .faq-search-input {
      width: 100%; padding: 14px 16px 14px 42px;
      border: 1px solid var(--line); border-radius: 11px;
      font-size: 0.95rem; font-family: var(--font);
      color: var(--ink); background: var(--bg);
      background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='18' height='18' fill='%239aadc0' viewBox='0 0 16 16'%3E%3Cpath d='M11.742 10.344a6.5 6.5 0 1 0-1.397 1.398h-.001l3.85 3.85a1 1 0 0 0 1.415-1.414l-3.85-3.85zm-5.857 0a4.5 4.5 0 1 1 0-9 4.5 4.5 0 0 1 0 9z'/%3E%3C/svg%3E");
      background-repeat: no-repeat; background-position: 14px center;
      transition: 0.18s;
    }
    .faq-search-input::placeholder { color: var(--ink-3); }
    .faq-search-input:focus {
      outline: none; border-color: rgba(46,236,192,0.5);
      box-shadow: 0 0 0 3px rgba(46,236,192,0.12);
    }
    .faq-search-status {
      margin-top: 10px; font-size: 0.82rem; color: var(--ember); font-weight: 600;
    }
    .faq-search-status[hidden] { display: none !important; }
    .search-hint { margin-top: 12px; font-size: 0.78rem; color: var(--ink-3); line-height: 1.5; }

    /* Body: side nav + content */
    .faq-body { padding: 32px 0 56px; }
    .faq-layout {
      display: grid; grid-template-columns: var(--side) 1fr; gap: 32px; align-items: start;
    }

    .side-nav {
      position: sticky; top: 76px;
      background: var(--panel); border: 1px solid var(--line);
      border-radius: 14px; padding: 14px 10px;
    }
    .side-nav p {
      font-size: 0.68rem; font-weight: 800; letter-spacing: 0.1em;
      text-transform: uppercase; color: var(--ink-3);
      padding: 4px 10px 10px;
    }
    .side-nav a {
      display: block; padding: 9px 12px; border-radius: 8px;
      font-size: 0.84rem; font-weight: 600; color: var(--ink-2);
      transition: 0.15s; margin-bottom: 2px;
    }
    .side-nav a:hover { color: var(--mint); background: var(--mint-soft); }

    .faq-content { min-width: 0; }

    .faq-group {
      margin-bottom: 36px; scroll-margin-top: 88px;
    }
    .faq-group[hidden] { display: none !important; }

    .faq-group-title {
      display: flex; align-items: baseline; gap: 10px;
      margin-bottom: 14px; padding-bottom: 10px;
      border-bottom: 1px dashed var(--line);
    }
    .faq-group-title strong {
      font-size: 1.05rem; font-weight: 800; color: var(--ink);
    }
    .faq-group-title em {
      font-size: 0.78rem; font-style: normal; font-weight: 600;
      color: var(--mint); font-family: ui-monospace, monospace;
    }

    .faq-grid {
      display: grid; grid-template-columns: 1fr 1fr; gap: 10px;
    }

    .faq-details {
      background: var(--panel); border: 1px solid var(--line);
      border-radius: 12px; overflow: hidden; transition: 0.18s;
    }
    .faq-details[hidden] { display: none !important; }
    .faq-details:hover { border-color: rgba(46,236,192,0.3); }
    .faq-details[open] {
      border-color: rgba(46,236,192,0.45);
      grid-column: 1 / -1;
      box-shadow: 0 0 20px rgba(46,236,192,0.08);
    }
    .faq-details summary {
      list-style: none; cursor: pointer;
      padding: 14px 38px 14px 16px;
      font-size: 0.88rem; font-weight: 600; color: var(--ink);
      line-height: 1.45; position: relative;
    }
    .faq-details summary::-webkit-details-marker { display: none; }
    .faq-details summary::before {
      content: "Q"; position: absolute; left: -9999px;
    }
    .faq-details summary::after {
      content: "›"; position: absolute; right: 14px; top: 50%;
      transform: translateY(-50%) rotate(90deg);
      font-size: 1.1rem; color: var(--mint); transition: 0.2s;
    }
    .faq-details[open] summary::after { transform: translateY(-50%) rotate(-90deg); }
    .faq-details[open] summary {
      color: var(--mint); border-bottom: 1px solid var(--line);
      background: rgba(46,236,192,0.04);
    }
    .faq-answer {
      padding: 14px 16px 16px;
      font-size: 0.875rem; color: var(--ink-2); line-height: 1.68;
    }
    .faq-answer p { margin: 0; }

    /* Mobile cat scroll */
    .mob-cats {
      display: none; overflow-x: auto; gap: 8px;
      padding: 12px 0 16px; margin-bottom: 8px;
      -webkit-overflow-scrolling: touch;
    }
    .mob-cats a {
      flex-shrink: 0; font-size: 0.78rem; font-weight: 600;
      padding: 7px 14px; border-radius: 50px;
      border: 1px solid var(--line); color: var(--ink-3); background: var(--panel);
    }
    .mob-cats a:hover { color: var(--mint); border-color: rgba(46,236,192,0.4); }

    .help-row {
      display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px;
      padding: 28px 0; border-top: 1px solid var(--line);
      border-bottom: 1px solid var(--line); background: rgba(0,0,0,0.18);
    }
    .help-row a {
      text-align: center; padding: 16px 10px;
      background: var(--panel); border: 1px solid var(--line);
      border-radius: 12px; color: var(--ink-2); font-weight: 600; font-size: 0.86rem;
    }
    .help-row a:hover { border-color: rgba(46,236,192,0.4); color: var(--mint); }
    .help-row a small {
      display: block; font-size: 0.68rem; font-weight: 800;
      letter-spacing: 0.06em; text-transform: uppercase;
      color: var(--mint); margin-bottom: 4px;
    }

    .cta { text-align: center; padding: 44px 20px 48px; }
    .cta h2 { font-size: 1.28rem; font-weight: 800; margin-bottom: 8px; }
    .cta p { color: var(--ink-2); margin-bottom: 18px; font-size: 0.94rem; }
    .cta .nb-dl { max-width: 320px; margin-inline: auto; }
    .foot {
      padding: 22px 0; border-top: 1px solid var(--line);
      font-size: 0.84rem; color: var(--ink-3);
    }
    .foot-in {
      display: flex; justify-content: space-between; flex-wrap: wrap;
      gap: 12px; align-items: center;
    }
    .foot-a { display: flex; gap: 18px; }
    .foot-a a { color: var(--ink-2); font-weight: 500; }
    .stick {
      display: none; position: fixed; bottom: 0; left: 0; right: 0; z-index: 100;
      padding: 11px 16px; background: rgba(10,14,23,0.94);
      backdrop-filter: blur(10px); border-top: 1px solid var(--line);
    }

    @media (max-width: 960px) {
      .top-split { grid-template-columns: 1fr; }
      .search-panel { order: -1; }
      .faq-layout { grid-template-columns: 1fr; }
      .side-nav { display: none; }
      .mob-cats { display: flex; }
      .faq-grid { grid-template-columns: 1fr; }
      .faq-details[open] { grid-column: auto; }
      .nav-ul, .desk { display: none; }
      .tog { display: block; }
      .stick { display: block; }
      body { padding-bottom: 68px; }
      .help-row { grid-template-columns: 1fr; }
    }