:root {
    color-scheme: light;
    --bg: #0b1220;
    --panel: rgba(11, 18, 32, 0.78);
    --panel-soft: #f4f7fb;
    --text: #eef4ff;
    --text-dark: #112036;
    --muted: #b6c5de;
    --border: rgba(255,255,255,0.12);
    --accent: #57aee3;
    --accent-strong: #4a3a93;
    --success: #1f8f63;
    --danger: #b94a64;
  }
  * { box-sizing: border-box; }
  body {
    margin: 0;
    font-family: ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    background:
      radial-gradient(circle at top left, rgba(87,174,227,0.28), transparent 24rem),
      radial-gradient(circle at top right, rgba(74,58,147,0.24), transparent 28rem),
      linear-gradient(180deg, #09101d 0%, #0f1a2c 48%, #101b30 100%);
    color: var(--text);
  }
  a { color: inherit; text-decoration: none; }
  .shell {
    max-width: 1120px;
    margin: 0 auto;
    padding: 24px;
  }
  .site-header, .site-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
  }
  .site-header {
    margin-bottom: 32px;
    padding: 14px 18px;
    border: 1px solid var(--border);
    border-radius: 20px;
    background: rgba(7, 13, 24, 0.56);
    backdrop-filter: blur(12px);
  }
  .brand {
    font-size: 18px;
    font-weight: 800;
    letter-spacing: 0.03em;
  }
  .site-nav {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    color: var(--muted);
  }
  .site-nav a:hover, .site-footer a:hover { color: white; }
  .hero {
    display: grid;
    grid-template-columns: minmax(0, 1.35fr) minmax(280px, 0.9fr);
    gap: 20px;
    margin-bottom: 24px;
  }
  .hero-copy, .hero-panel, .card {
    border: 1px solid var(--border);
    border-radius: 28px;
    background: var(--panel);
    backdrop-filter: blur(16px);
  }
  .hero-copy {
    padding: 34px;
  }
  .hero-copy h1 {
    margin: 10px 0 12px;
    font-size: clamp(2.2rem, 5vw, 4.4rem);
    line-height: 0.96;
  }
  .hero-copy p {
    max-width: 44rem;
    color: var(--muted);
    font-size: 1.05rem;
    line-height: 1.7;
  }
  .hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 24px;
  }
  .hero-panel {
    padding: 28px;
  }
  .hero-panel h2 {
    margin-top: 0;
    font-size: 1.15rem;
  }
  .grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
  }
  .card {
    padding: 24px;
  }
  .card h3, .card h2, .card h1 { margin-top: 0; }
  .prose {
    background: rgba(248, 251, 255, 0.96);
    color: var(--text-dark);
    border-color: rgba(17, 32, 54, 0.08);
  }
  .prose p, .prose li {
    line-height: 1.7;
    color: rgba(17, 32, 54, 0.86);
  }
  .feature-list {
    margin: 0;
    padding-left: 18px;
    color: var(--muted);
  }
  .eyebrow {
    display: inline-flex;
    padding: 6px 10px;
    border-radius: 999px;
    font-size: 12px;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: #fff;
    background: linear-gradient(135deg, var(--accent), var(--accent-strong));
  }
  .button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 44px;
    padding: 0 16px;
    border-radius: 999px;
    font-weight: 700;
    border: 1px solid transparent;
  }
  .button.primary {
    background: linear-gradient(135deg, var(--accent), var(--accent-strong));
    color: white;
  }
  .button.secondary {
    background: rgba(255,255,255,0.04);
    border-color: var(--border);
    color: white;
  }
  .delete-form {
    display: grid;
    gap: 14px;
    margin-top: 22px;
  }
  .delete-form label {
    display: grid;
    gap: 8px;
    font-weight: 600;
  }
  .delete-form input,
  .delete-form textarea {
    width: 100%;
    border-radius: 16px;
    border: 1px solid rgba(17, 32, 54, 0.14);
    padding: 14px 16px;
    font: inherit;
    background: white;
    color: var(--text-dark);
  }
  .banner {
    border-radius: 16px;
    padding: 12px 14px;
    font-weight: 600;
  }
  .banner.error {
    background: rgba(185, 74, 100, 0.12);
    color: var(--danger);
  }
  .banner.success {
    background: rgba(31, 143, 99, 0.12);
    color: var(--success);
  }
  .fine-print {
    font-size: 13px;
    color: rgba(17, 32, 54, 0.64);
  }
  .site-footer {
    margin-top: 28px;
    padding: 0 6px 24px;
    color: var(--muted);
    align-items: flex-start;
  }
  @media (max-width: 860px) {
    .shell { padding: 16px; }
    .hero, .grid { grid-template-columns: 1fr; }
    .site-header, .site-footer { flex-direction: column; align-items: flex-start; }
  }