*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

    :root {
      --bg: #0d0d0c;
      --surface: #161614;
      --card: #1c1c1a;
      --border: #2a2a28;
      --border2: #383836;
      --text: #e8e3d9;
      --text2: #a8a49e;
      --text3: #6b6762;
      --t1: #3a8197;
      --t1-glow: rgba(58,129,151,0.12);
      --green: #4CAF50;
      --red: #ff6b6b;
      --radius: 8px;
      --radius-sm: 4px;
    }

    body {
      font-family: 'Archivo', sans-serif;
      background: var(--bg);
      color: var(--text);
      min-height: 100vh;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: flex-start;
      padding: 48px 20px 80px;
    }

    .wrap {
      width: 100%;
      max-width: 480px;
    }

    /* Header */
    .header {
      display: flex;
      flex-direction: column;
      align-items: center;
      margin-bottom: 40px;
      gap: 16px;
    }

    .logo {
      height: 32px;
      width: auto;
      opacity: 0.9;
    }

    .header-label {
      font-family: 'IBM Plex Mono', monospace;
      font-size: 11px;
      letter-spacing: 0.1em;
      color: var(--text3);
      text-transform: uppercase;
    }

    /* Card */
    .card {
      background: var(--card);
      border: 1px solid var(--border);
      border-radius: var(--radius);
      overflow: hidden;
      margin-bottom: 12px;
    }

    .card-header {
      padding: 16px 20px;
      border-bottom: 1px solid var(--border);
    }

    .property-name {
      font-size: 13px;
      font-weight: 700;
      color: var(--t1);
      font-family: 'IBM Plex Mono', monospace;
      letter-spacing: 0.06em;
      text-transform: uppercase;
      margin-bottom: 2px;
    }

    .subscriber-email {
      font-family: 'IBM Plex Mono', monospace;
      font-size: 12px;
      color: var(--text3);
    }

    /* Email type rows */
    .pref-row {
      display: flex;
      align-items: flex-start;
      gap: 14px;
      padding: 18px 20px;
      border-bottom: 1px solid var(--border);
      transition: background 0.15s;
      cursor: pointer;
    }

    .pref-row:last-child { border-bottom: none; }
    .pref-row:hover { background: rgba(255,255,255,0.02); }

    .pref-row.disabled { opacity: 0.45; }

    .checkbox {
      width: 20px;
      height: 20px;
      border-radius: var(--radius-sm);
      border: 2px solid var(--border2);
      flex-shrink: 0;
      margin-top: 2px;
      display: flex;
      align-items: center;
      justify-content: center;
      transition: all 0.15s;
    }

    .checkbox.checked {
      background: var(--t1);
      border-color: var(--t1);
    }

    .checkbox.checked::after {
      content: '';
      width: 5px;
      height: 9px;
      border: 2px solid #fff;
      border-top: none;
      border-left: none;
      transform: rotate(45deg) translateY(-1px);
    }

    .pref-content { flex: 1; }

    .pref-label {
      font-size: 14px;
      font-weight: 600;
      color: var(--text);
      margin-bottom: 4px;
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .this-email {
      font-family: 'IBM Plex Mono', monospace;
      font-size: 10px;
      color: var(--t1);
      letter-spacing: 0.06em;
      background: var(--t1-glow);
      padding: 2px 6px;
      border-radius: 2px;
    }

    .pref-desc {
      font-family: 'IBM Plex Mono', monospace;
      font-size: 11px;
      color: var(--text3);
      line-height: 1.6;
    }

    /* Newsletter preferences */
    .newsletter-prefs {
      background: var(--surface);
      border: 1px solid var(--border);
      border-radius: var(--radius);
      padding: 20px;
      margin-bottom: 12px;
    }

    .section-label {
      font-family: 'IBM Plex Mono', monospace;
      font-size: 10px;
      letter-spacing: 0.08em;
      color: var(--text3);
      text-transform: uppercase;
      margin-bottom: 16px;
    }

    .pref-field { margin-bottom: 16px; }
    .pref-field:last-child { margin-bottom: 0; }

    .field-label {
      font-size: 12px;
      font-weight: 600;
      color: var(--text2);
      margin-bottom: 8px;
    }

    select, .topics-wrap {
      background: var(--card);
      border: 1px solid var(--border);
      border-radius: var(--radius-sm);
      color: var(--text);
      font-family: 'IBM Plex Mono', monospace;
      font-size: 12px;
      padding: 8px 12px;
      outline: none;
      width: 100%;
      cursor: pointer;
    }

    .topics-wrap {
      display: flex;
      flex-wrap: wrap;
      gap: 6px;
      padding: 10px 12px;
    }

    .topic-chip {
      font-family: 'IBM Plex Mono', monospace;
      font-size: 11px;
      padding: 4px 10px;
      border-radius: 2px;
      border: 1px solid var(--border2);
      background: transparent;
      color: var(--text3);
      cursor: pointer;
      transition: all 0.15s;
    }

    .topic-chip.active {
      background: var(--t1-glow);
      border-color: var(--t1);
      color: var(--t1);
    }

    /* Buttons */
    .btn-primary {
      width: 100%;
      padding: 14px;
      border-radius: var(--radius);
      border: none;
      cursor: pointer;
      background: var(--t1);
      color: #fff;
      font-family: 'Archivo', sans-serif;
      font-weight: 700;
      font-size: 14px;
      letter-spacing: 0.04em;
      margin-bottom: 10px;
      transition: opacity 0.15s;
    }

    .btn-primary:hover { opacity: 0.9; }
    .btn-primary:disabled { opacity: 0.5; cursor: not-allowed; }

    .btn-ghost {
      width: 100%;
      padding: 12px;
      border-radius: var(--radius);
      border: 1px solid var(--border);
      cursor: pointer;
      background: transparent;
      color: var(--text3);
      font-family: 'IBM Plex Mono', monospace;
      font-size: 12px;
      letter-spacing: 0.04em;
      transition: border-color 0.15s, color 0.15s;
    }

    .btn-ghost:hover { border-color: var(--border2); color: var(--text2); }

    /* States */
    .state-loading, .state-error, .state-saved {
      padding: 32px 24px;
      text-align: center;
      border-radius: var(--radius);
      border: 1px solid var(--border);
    }

    .state-loading { background: var(--card); color: var(--text3); font-family: 'IBM Plex Mono', monospace; font-size: 13px; }
    .state-error { background: rgba(255,107,107,0.06); border-color: rgba(255,107,107,0.2); color: var(--red); font-family: 'IBM Plex Mono', monospace; font-size: 13px; }
    .state-saved { background: rgba(76,175,80,0.06); border-color: rgba(76,175,80,0.2); }

    .state-saved h2 { font-size: 20px; font-weight: 700; color: var(--green); margin-bottom: 8px; }
    .state-saved p { font-family: 'IBM Plex Mono', monospace; font-size: 12px; color: var(--text3); line-height: 1.6; }

    .footer {
      margin-top: 32px;
      text-align: center;
      font-family: 'IBM Plex Mono', monospace;
      font-size: 10px;
      color: var(--text3);
      letter-spacing: 0.04em;
    }

    @media (max-width: 520px) {
      body { padding: 32px 16px 60px; }
    }