@layer reset, tokens, base, components, utilities;

@layer reset {
  *, *::before, *::after { box-sizing: border-box; }
  html, body { margin: 0; }
  h1, h2, h3, h4, p, ul, ol, dl, dd, table { margin: 0; }
  ul, ol { padding: 0; list-style: none; }
  button { font: inherit; }
}

@layer tokens {
  :root {
    color-scheme: light;

    --bg: oklch(98% 0.005 250);
    --surface: oklch(100% 0 0);
    --ink: oklch(20% 0.02 250);
    --ink-2: oklch(35% 0.02 250);
    --ink-3: oklch(55% 0.02 250);
    --line: oklch(90% 0.01 250);
    --line-2: oklch(82% 0.015 250);

    --brand: oklch(58% 0.18 255);
    --brand-soft: oklch(96% 0.025 255);
    --brand-line: oklch(85% 0.06 255);

    --good: oklch(60% 0.13 150);
    --good-soft: oklch(95% 0.04 150);
    --warn: oklch(70% 0.14 70);
    --warn-soft: oklch(96% 0.05 70);
    --danger: oklch(58% 0.18 25);
    --danger-soft: oklch(96% 0.03 25);

    --gold: oklch(78% 0.15 85);
    --silver: oklch(75% 0.02 250);
    --bronze: oklch(68% 0.10 50);

    --font: ui-sans-serif, system-ui, -apple-system, "Pretendard Variable",
      "Apple SD Gothic Neo", "Noto Sans KR", sans-serif;

    --radius: 12px;
    --radius-sm: 8px;
  }
}

@layer base {
  body {
    background: var(--bg);
    color: var(--ink);
    font-family: var(--font);
    font-size: 15px;
    line-height: 1.65;
    -webkit-font-smoothing: antialiased;
  }

  main {
    max-width: 1000px;
    margin: 0 auto;
    padding: 24px clamp(16px, 4vw, 40px) 96px;
  }

  h1 {
    font-size: clamp(28px, 4vw, 44px);
    font-weight: 800;
    letter-spacing: -0.02em;
    line-height: 1.15;
  }

  h2 {
    font-size: 22px;
    font-weight: 700;
    letter-spacing: -0.01em;
    margin-bottom: 14px;
  }

  h3 {
    font-size: 16px;
    font-weight: 700;
  }

  p { color: var(--ink-2); }

  strong { color: var(--ink); font-weight: 700; }
  em { font-style: normal; color: var(--brand); font-weight: 600; }
}

@layer components {
  .hero {
    background: linear-gradient(135deg, oklch(96% 0.04 255), oklch(98% 0.02 270));
    border-bottom: 1px solid var(--line);
    padding: 48px clamp(16px, 4vw, 40px) 40px;
  }

  .hero > * { max-width: 1000px; margin-left: auto; margin-right: auto; }

  .eyebrow {
    font-size: 12px;
    font-weight: 600;
    color: var(--brand);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: 8px;
  }

  .lede {
    font-size: 17px;
    color: var(--ink-2);
    margin-top: 12px;
    max-width: 760px;
  }

  .meta {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
    gap: 20px;
    margin-top: 28px;
    padding-top: 24px;
    border-top: 1px solid var(--brand-line);
  }

  .meta dt {
    font-size: 11px;
    font-weight: 600;
    color: var(--ink-3);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin-bottom: 4px;
  }

  .meta dd {
    font-size: 14px;
    font-weight: 600;
    color: var(--ink);
    margin: 0;
  }

  .section {
    margin-top: 56px;
    container-type: inline-size;
  }

  .section > p {
    max-width: 760px;
  }

  .question-box {
    background: var(--brand-soft);
    border-left: 4px solid var(--brand);
    border-radius: var(--radius-sm);
    padding: 16px 20px;
    margin: 16px 0;
    font-size: 16px;
    color: var(--ink);
  }

  table.data {
    width: 100%;
    border-collapse: collapse;
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    overflow: hidden;
    font-size: 14px;
    margin-top: 12px;
  }

  table.data th,
  table.data td {
    padding: 10px 14px;
    text-align: left;
    border-bottom: 1px solid var(--line);
    vertical-align: top;
  }

  table.data thead th {
    background: oklch(97% 0.01 250);
    font-size: 12px;
    font-weight: 700;
    color: var(--ink-2);
    text-transform: uppercase;
    letter-spacing: 0.04em;
  }

  table.data tbody tr:last-child td { border-bottom: 0; }

  table.data .num {
    text-align: right;
    font-variant-numeric: tabular-nums;
    font-feature-settings: "tnum";
  }

  table.data tr.hl-good td {
    background: var(--good-soft);
  }
  table.data tr.hl-bad td {
    background: var(--danger-soft);
  }

  table.data tr.p-0 td { background: oklch(97% 0.05 25); }
  table.data tr.p-1 td { background: oklch(98% 0.04 60); }
  table.data tr.p-2 td { background: oklch(99% 0.02 90); }
  table.data tr.p-3 td { background: var(--surface); }

  .pri-pill {
    display: inline-flex;
    align-items: center;
    padding: 2px 8px;
    border-radius: 999px;
    font-size: 11px;
    font-weight: 700;
  }
  .pri-pill.p0 { background: oklch(92% 0.10 25); color: oklch(45% 0.15 25); }
  .pri-pill.p1 { background: oklch(92% 0.10 60); color: oklch(45% 0.12 50); }
  .pri-pill.p2 { background: oklch(94% 0.08 90); color: oklch(45% 0.10 80); }
  .pri-pill.p3 { background: oklch(94% 0.02 150); color: oklch(45% 0.08 150); }

  .note {
    font-size: 13px;
    color: var(--ink-2);
    background: oklch(98% 0.02 60);
    border: 1px solid oklch(92% 0.04 70);
    border-radius: var(--radius-sm);
    padding: 12px 14px;
    margin-top: 14px;
  }

  .patterns {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 12px;
    margin-top: 16px;
  }

  .pattern {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 18px;
    transition: transform 0.15s, box-shadow 0.15s;
  }

  .pattern:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 16px -8px oklch(20% 0.05 250 / 0.15);
  }

  .pattern.rank-1 { border-color: var(--gold); background: linear-gradient(180deg, oklch(98% 0.05 85), var(--surface)); }
  .pattern.rank-2 { border-color: var(--silver); background: linear-gradient(180deg, oklch(98% 0.01 250), var(--surface)); }
  .pattern.rank-3 { border-color: var(--bronze); background: linear-gradient(180deg, oklch(98% 0.03 50), var(--surface)); }

  .pattern-header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 10px;
  }

  .rank-badge {
    display: inline-flex;
    align-items: center;
    padding: 3px 9px;
    border-radius: 999px;
    font-size: 11px;
    font-weight: 700;
    background: oklch(94% 0.01 250);
    color: var(--ink-2);
  }

  .rank-badge.gold { background: oklch(92% 0.10 85); color: oklch(40% 0.10 60); }
  .rank-badge.silver { background: oklch(92% 0.01 250); color: oklch(40% 0.01 250); }
  .rank-badge.bronze { background: oklch(90% 0.06 50); color: oklch(40% 0.08 40); }

  .pattern p {
    font-size: 14px;
    line-height: 1.55;
    color: var(--ink-2);
  }

  .pattern .adopters {
    margin-top: 8px;
    padding-top: 8px;
    border-top: 1px dashed var(--line);
    font-size: 12px;
    color: var(--ink-3);
  }

  .recommendation {
    background: linear-gradient(135deg, oklch(96% 0.04 255), oklch(98% 0.03 270));
    border: 1px solid var(--brand-line);
    border-radius: var(--radius);
    padding: 24px;
    margin: 16px 0 28px;
  }

  .evolution {
    display: flex;
    flex-direction: column;
    gap: 12px;
    counter-reset: step;
  }

  .evolution li {
    display: grid;
    grid-template-columns: 160px 1fr;
    gap: 16px;
    align-items: center;
    padding: 12px 16px;
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--radius-sm);
  }

  .evolution li:nth-child(1) { border-left: 4px solid var(--danger); }
  .evolution li:nth-child(2) { border-left: 4px solid var(--warn); }
  .evolution li:nth-child(3) { border-left: 4px solid var(--brand); }
  .evolution li:nth-child(4) { border-left: 4px solid var(--good); }

  .step-label {
    font-size: 11px;
    font-weight: 700;
    color: var(--ink-3);
    text-transform: uppercase;
    letter-spacing: 0.06em;
  }

  .evolution p {
    margin: 0;
    font-size: 14px;
    color: var(--ink);
  }

  .risk {
    color: var(--danger);
    font-weight: 600;
  }

  .key-insight {
    margin-top: 16px;
    padding: 14px 16px;
    background: var(--surface);
    border-radius: var(--radius-sm);
    font-size: 14px;
    line-height: 1.6;
    border: 1px dashed var(--brand-line);
  }

  .closing-quote {
    font-size: 19px;
    line-height: 1.5;
    color: var(--ink);
    font-weight: 500;
    text-align: center;
    background: linear-gradient(135deg, oklch(96% 0.04 255), oklch(98% 0.03 270));
    padding: 32px 28px;
    border-radius: var(--radius);
    border: 1px solid var(--brand-line);
    margin: 16px 0;
  }

  ol.sources {
    list-style: decimal inside;
    padding-left: 0;
  }

  ol.sources li {
    padding: 8px 0;
    border-bottom: 1px dashed var(--line);
    font-size: 13px;
    color: var(--ink-2);
  }

  ol.sources li:last-child { border-bottom: 0; }

  footer {
    margin-top: 64px;
    padding-top: 24px;
    border-top: 1px solid var(--line);
    text-align: center;
    font-size: 12px;
    color: var(--ink-3);
  }

  @container (max-width: 560px) {
    .evolution li {
      grid-template-columns: 1fr;
      gap: 4px;
    }
  }
}