:root {
      --bg-primary: #0a0c14;
      --bg-secondary: #10131c;
      --bg-card: #151923;
      --bg-elevated: #1a1f2d;
      --text-primary: #e8eaf0;
      --text-secondary: #a3aac0;
      --text-muted: #8f98b5;
      --text-dim: #6b7591;
      --border-color: #1e2338;
      --border-light: #282e45;
      --accent: #FF4D6A;
      --accent2: #FF8A5C;
      --accent-dim: rgba(255,77,106,.15);
      --accent-glow: rgba(255,77,106,.35);
      --r-sm: 8px;
      --r-md: 12px;
      --r-lg: 16px;
      --r-xl: 20px;
      --r-full: 9999px;
    }
    * { box-sizing: border-box; }
    html, body { margin: 0; padding: 0; }
    body {
      font-family: 'DM Sans', -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, sans-serif;
      background: var(--bg-primary);
      color: var(--text-primary);
      line-height: 1.65;
      -webkit-font-smoothing: antialiased;
      -moz-osx-font-smoothing: grayscale;
    }
    .bg-orbs {
      position: fixed;
      inset: 0;
      pointer-events: none;
      z-index: 0;
      overflow: hidden;
    }
    .bg-orbs::before, .bg-orbs::after {
      content: '';
      position: absolute;
      width: 480px;
      height: 480px;
      border-radius: 50%;
      filter: blur(120px);
      opacity: .25;
    }
    .bg-orbs::before {
      background: var(--accent);
      top: -200px;
      inset-inline-start: -160px;
    }
    .bg-orbs::after {
      background: var(--accent2);
      bottom: -200px;
      inset-inline-end: -160px;
      opacity: .18;
    }

    .container {
      position: relative;
      z-index: 1;
      max-width: 780px;
      margin: 0 auto;
      padding: 24px 20px 96px;
    }

    /* Header */
    .topbar {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 12px 16px;
      background: linear-gradient(180deg, rgba(10,12,20,.95), rgba(10,12,20,.7));
      backdrop-filter: blur(20px);
      border-bottom: 1px solid var(--border-color);
      position: sticky;
      top: 0;
      z-index: 50;
    }
    .brand {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      text-decoration: none;
      color: var(--text-primary);
    }
    .brand svg { width: 36px; height: 36px; flex-shrink: 0; }
    .brand-name {
      font-size: 17px;
      font-weight: 800;
      letter-spacing: -0.02em;
    }
    .brand-name .accent { color: var(--accent); }
    .back-link {
      font-size: 12px;
      color: var(--text-muted);
      text-decoration: none;
      padding: 6px 12px;
      border-radius: var(--r-full);
      border: 1px solid var(--border-color);
      transition: all .2s;
    }
    .back-link:hover {
      color: var(--accent);
      border-color: var(--accent);
    }

    /* Hero */
    .hero {
      padding: 40px 0 32px;
      text-align: center;
      position: relative;
    }
    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 6px 14px;
      border-radius: var(--r-full);
      background: var(--accent-dim);
      color: var(--accent);
      font-size: 11px;
      font-weight: 700;
      letter-spacing: 1.2px;
      text-transform: uppercase;
      margin-bottom: 16px;
    }
    h1 {
      font-size: clamp(28px, 6vw, 44px);
      font-weight: 800;
      letter-spacing: -0.03em;
      line-height: 1.1;
      margin: 0 0 12px;
      background: linear-gradient(135deg, #ffffff 30%, var(--accent) 120%);
      -webkit-background-clip: text;
      background-clip: text;
      -webkit-text-fill-color: transparent;
      color: transparent;
    }
    .hero-sub {
      font-size: 15px;
      color: var(--text-muted);
      margin: 0;
    }
    .updated {
      font-size: 12px;
      color: var(--text-dim);
      margin-top: 12px;
    }

    /* Language tabs */
    .lang-tabs {
      display: flex;
      gap: 4px;
      justify-content: center;
      padding: 4px;
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--r-full);
      width: fit-content;
      margin: 32px auto 24px;
    }
    .lang-tab {
      padding: 7px 16px;
      border-radius: var(--r-full);
      font-size: 13px;
      font-weight: 600;
      color: var(--text-muted);
      text-decoration: none;
      transition: all .2s;
      cursor: pointer;
    }
    .lang-tab:hover { color: var(--text-secondary); }
    .lang-tab.active {
      background: var(--accent);
      color: white;
    }

    /* Cards */
    .card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--r-lg);
      padding: 22px 24px;
      margin-bottom: 14px;
    }
    .card-head {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-bottom: 14px;
    }
    .card-icon {
      width: 36px;
      height: 36px;
      border-radius: var(--r-md);
      background: var(--accent-dim);
      color: var(--accent);
      display: inline-flex;
      align-items: center;
      justify-content: center;
      flex-shrink: 0;
    }
    .card-icon svg { width: 20px; height: 20px; }
    h2 {
      font-size: 17px;
      font-weight: 700;
      margin: 0;
      color: var(--text-primary);
      letter-spacing: -0.01em;
    }
    .card p {
      margin: 0 0 12px;
      color: var(--text-secondary);
      font-size: 15px;
    }
    .card p:last-child { margin-bottom: 0; }
    .card ul {
      margin: 0 0 12px;
      padding-inline-start: 8px;
      list-style: none;
    }
    .card li {
      position: relative;
      padding-inline-start: 22px;
      padding-block: 6px;
      color: var(--text-secondary);
      font-size: 15px;
    }
    .card li::before {
      content: '';
      position: absolute;
      inset-inline-start: 0;
      top: 14px;
      width: 6px;
      height: 6px;
      border-radius: 50%;
      background: var(--accent);
      opacity: .8;
    }
    .card li strong { color: var(--text-primary); font-weight: 700; }
    code {
      background: var(--bg-elevated);
      border: 1px solid var(--border-color);
      border-radius: 4px;
      padding: 1px 6px;
      font-size: 13px;
      font-family: ui-monospace, "SF Mono", Consolas, monospace;
      color: var(--accent);
    }
    a.inline {
      color: var(--accent);
      text-decoration: none;
      border-bottom: 1px solid transparent;
      transition: border-color .15s;
    }
    a.inline:hover { border-bottom-color: var(--accent); }

    /* Big highlights */
    .highlight {
      background: linear-gradient(135deg, var(--accent-dim), transparent 60%);
      border: 1px solid var(--accent-dim);
    }
    .highlight .card-icon { background: var(--accent); color: white; }

    /* Footer */
    .foot {
      margin-top: 40px;
      padding: 24px 0;
      text-align: center;
      border-top: 1px solid var(--border-color);
      color: var(--text-dim);
      font-size: 13px;
    }
    .foot a { color: var(--accent); text-decoration: none; }

    /* Language sections */
    .lang-section { display: none; }
    .lang-section.active { display: block; animation: fadeIn .25s ease-out; }
    @keyframes fadeIn { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: translateY(0); } }
    .lang-en, .lang-es { direction: ltr; text-align: start; }
    .lang-en .container, .lang-es .container { /* no extra */ }