:root {
  --bg: #eef1f4;
  --ink: #152028;
  --ink-soft: #4d5b66;
  --line: rgba(21, 32, 40, 0.12);
  --accent: #1a6b72;
  --accent-deep: #0e4b51;
  --warn: #8a4b2a;
  --phase-a: #1a6b72;
  --phase-b: #6b5a1a;
  --phase-c: #7a3530;
  --surface: rgba(255, 255, 255, 0.62);
  --radius: 14px;
  --max: 980px;
  --font-display: "Instrument Serif", Georgia, serif;
  --font-body: "Manrope", "PingFang SC", "Hiragino Sans GB", sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.7;
  background:
    radial-gradient(1000px 520px at 8% -8%, rgba(26, 107, 114, 0.16), transparent 55%),
    radial-gradient(800px 480px at 100% 0%, rgba(21, 32, 40, 0.06), transparent 48%),
    linear-gradient(180deg, #f4f7fa 0%, var(--bg) 45%, #e7ecf1 100%);
  min-height: 100vh;
}

.noise {
  pointer-events: none;
  position: fixed;
  inset: 0;
  z-index: 0;
  opacity: 0.04;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

.topnav,
main,
.site-footer {
  position: relative;
  z-index: 1;
}

.topnav {
  position: sticky;
  top: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.85rem 1.25rem;
  backdrop-filter: blur(14px);
  background: rgba(238, 241, 244, 0.8);
  border-bottom: 1px solid var(--line);
  z-index: 20;
}

.brand {
  font-family: var(--font-display);
  font-size: 1.25rem;
  color: var(--ink);
  text-decoration: none;
}

.topnav nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 1rem;
  justify-content: flex-end;
}

.topnav a {
  color: var(--ink-soft);
  text-decoration: none;
  font-size: 0.88rem;
  font-weight: 500;
}

.topnav nav a:hover {
  color: var(--accent);
}

main {
  width: min(100% - 2rem, var(--max));
  margin: 0 auto;
  padding-bottom: 5rem;
}

.hero {
  position: relative;
  padding: 4.5rem 0 3.5rem;
  overflow: hidden;
  animation: rise 0.8s ease both;
}

.hero-bg {
  position: absolute;
  inset: 10% -20% auto auto;
  width: 420px;
  height: 420px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(26, 107, 114, 0.22), transparent 70%);
  filter: blur(10px);
  animation: drift 12s ease-in-out infinite alternate;
}

.eyebrow {
  margin: 0 0 1rem;
  color: var(--accent);
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hero h1 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(2.2rem, 6vw, 3.6rem);
  font-weight: 400;
  line-height: 1.15;
  letter-spacing: -0.02em;
}

.hero h1 em {
  font-style: italic;
  color: var(--accent-deep);
}

.lede {
  max-width: 36rem;
  margin: 1.25rem 0 0;
  color: var(--ink-soft);
  font-size: 1.05rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.75rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.2rem;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 600;
  font-size: 0.95rem;
  transition: transform 0.2s ease, background 0.2s ease, color 0.2s ease;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn.primary {
  background: var(--ink);
  color: #f4f7fa;
}

.btn.ghost {
  border: 1px solid var(--line);
  color: var(--ink);
  background: rgba(255, 255, 255, 0.55);
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.75rem;
  margin: 2.5rem 0 0;
  padding: 0;
}

.hero-stats > div {
  padding: 1rem 0 0;
  border-top: 1px solid var(--line);
}

.hero-stats dt {
  color: var(--ink-soft);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.04em;
}

.hero-stats dd {
  margin: 0.2rem 0 0;
  font-family: var(--font-display);
  font-size: 1.8rem;
}

.section {
  padding: 3rem 0 1rem;
  border-top: 1px solid var(--line);
  animation: rise 0.7s ease both;
}

.section-head {
  margin-bottom: 1.5rem;
}

.section-head .num {
  display: inline-block;
  margin-bottom: 0.4rem;
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.12em;
}

.section-head h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.7rem, 3.5vw, 2.3rem);
  font-weight: 400;
  line-height: 1.2;
}

.section-head p {
  margin: 0.45rem 0 0;
  color: var(--ink-soft);
}

.info-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.info-table th,
.info-table td {
  padding: 0.9rem 1rem;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--line);
}

.info-table tr:last-child th,
.info-table tr:last-child td {
  border-bottom: none;
}

.info-table th {
  width: 7.5rem;
  color: var(--ink-soft);
  font-weight: 600;
  background: rgba(26, 107, 114, 0.06);
}

.quote-list,
.quotes,
.system-list,
.judge-list,
.boundary-list {
  margin: 0;
  padding-left: 1.2rem;
}

.quote-list li,
.quotes li,
.system-list li,
.judge-list li {
  margin: 0.55rem 0;
}

.callout {
  margin-top: 1.25rem;
  padding: 1rem 1.1rem;
  border-left: 3px solid var(--accent);
  background: rgba(26, 107, 114, 0.08);
}

.callout strong {
  display: block;
  margin-bottom: 0.25rem;
}

.phase {
  margin: 1.25rem 0;
  padding: 1.25rem 1.2rem;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.phase header {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.6rem 0.9rem;
  margin-bottom: 0.75rem;
}

.phase h3 {
  margin: 0;
  font-size: 1.05rem;
}

.phase-tag {
  display: inline-flex;
  align-items: center;
  padding: 0.2rem 0.55rem;
  border-radius: 999px;
  color: #fff;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.phase-tag.a { background: var(--phase-a); }
.phase-tag.b { background: var(--phase-b); }
.phase-tag.c { background: var(--phase-c); }

.note {
  color: var(--ink-soft);
  font-size: 0.95rem;
}

.result {
  margin: 1rem 0 0;
  padding-top: 0.85rem;
  border-top: 1px dashed var(--line);
}

.result span {
  display: inline-block;
  margin-right: 0.5rem;
  color: var(--warn);
  font-weight: 700;
  font-size: 0.82rem;
}

.prose {
  color: var(--ink-soft);
}

.contrast {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.9rem;
  margin-top: 1.25rem;
}

.contrast > div {
  padding: 1.1rem 1.15rem;
  border-top: 3px solid var(--accent);
  background: var(--surface);
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

.contrast > div:last-child {
  border-top-color: var(--phase-c);
}

.contrast h4 {
  margin: 0 0 0.35rem;
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 400;
}

.contrast p {
  margin: 0;
  color: var(--ink-soft);
}

.summary-quote {
  margin: 1.5rem 0 0;
  padding: 1.25rem 1.35rem;
  border: none;
  background: linear-gradient(135deg, rgba(26, 107, 114, 0.14), rgba(21, 32, 40, 0.05));
  font-family: var(--font-display);
  font-size: 1.35rem;
  line-height: 1.45;
  font-style: italic;
}

.judge-list em {
  color: var(--accent-deep);
  font-style: normal;
  font-weight: 700;
}

.verdict-list {
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: verdict;
}

.verdict-list li {
  position: relative;
  margin: 0 0 0.85rem;
  padding: 1rem 1.1rem 1rem 3.2rem;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  counter-increment: verdict;
}

.verdict-list li::before {
  content: counter(verdict, decimal-leading-zero);
  position: absolute;
  left: 1rem;
  top: 1rem;
  color: var(--accent);
  font-family: var(--font-display);
  font-size: 1.15rem;
}

.prose.deep {
  margin-top: 1.25rem;
  color: var(--ink);
  line-height: 1.8;
}

.prose.deep strong {
  color: var(--accent-deep);
}

.table-wrap {
  margin: 1.25rem 0;
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
}

.analysis-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.92rem;
}

.analysis-table th,
.analysis-table td {
  padding: 0.85rem 1rem;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--line);
}

.analysis-table thead th {
  background: rgba(26, 107, 114, 0.08);
  color: var(--ink-soft);
  font-weight: 700;
  font-size: 0.8rem;
  letter-spacing: 0.03em;
}

.analysis-table tbody tr:last-child th,
.analysis-table tbody tr:last-child td {
  border-bottom: none;
}

.analysis-table td:first-child {
  font-weight: 600;
  min-width: 7rem;
}

.flow {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.35rem 0.45rem;
  margin: 0 0 1.5rem;
  padding: 1rem 1.1rem;
  background: linear-gradient(135deg, rgba(26, 107, 114, 0.1), rgba(21, 32, 40, 0.04));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  font-size: 0.9rem;
  font-weight: 600;
}

.flow .arrow {
  color: var(--accent);
  font-weight: 700;
}

.analysis-block {
  margin: 0 0 1rem;
  padding: 1.25rem 1.3rem;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.analysis-block h3 {
  margin: 0 0 0.65rem;
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 400;
}

.analysis-block p {
  margin: 0 0 0.65rem;
}

.analysis-block p:last-child {
  margin-bottom: 0;
}

.analysis-block .muted {
  color: var(--ink-soft);
  font-size: 0.95rem;
}

.subhead {
  margin: 2rem 0 0.85rem;
  font-family: var(--font-display);
  font-size: 1.45rem;
  font-weight: 400;
}

.callout.accent-warm {
  border-left-color: var(--warn);
  background: rgba(138, 75, 42, 0.08);
}

.contrast.three {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.contrast.three > div:nth-child(2) {
  border-top-color: var(--phase-b);
}

.contrast.three > div:nth-child(3) {
  border-top-color: var(--phase-c);
}

.scenario-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.9rem;
}

.scenario {
  padding: 1.2rem 1.25rem;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  border-top: 3px solid var(--accent);
}

.scenario.mid { border-top-color: var(--phase-b); }
.scenario.low { border-top-color: #5a6b7a; }
.scenario.rare { border-top-color: var(--phase-c); }

.scenario .prob {
  display: inline-block;
  margin-bottom: 0.45rem;
  color: var(--ink-soft);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.scenario h3 {
  margin: 0 0 0.5rem;
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 400;
}

.scenario p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.95rem;
}

.site-footer {
  width: min(100% - 2rem, var(--max));
  margin: 0 auto 2.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--line);
  color: var(--ink-soft);
  font-size: 0.9rem;
}

/* Evidence gallery (media2) */
.evidence-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
  margin: 1.25rem 0;
}

.evidence-card {
  margin: 0;
  padding: 0.75rem;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  backdrop-filter: blur(8px);
}

.evidence-frame {
  position: relative;
  display: block;
  width: 100%;
  aspect-ratio: 3 / 4;
  overflow: hidden;
  border-radius: 10px;
  background: rgba(21, 32, 40, 0.06);
  cursor: zoom-in;
  border: 0;
  padding: 0;
}

.evidence-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.evidence-card figcaption {
  margin-top: 0.65rem;
  color: var(--ink-soft);
  font-size: 0.88rem;
  line-height: 1.55;
}

.evidence-card figcaption strong {
  color: var(--ink);
  font-weight: 600;
}

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(14px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

@keyframes drift {
  from { transform: translate(0, 0); }
  to { transform: translate(-30px, 24px); }
}

@media (max-width: 720px) {
  .topnav nav {
    display: none;
  }

  .hero {
    padding-top: 3rem;
  }

  .hero-stats,
  .contrast,
  .contrast.three,
  .scenario-grid {
    grid-template-columns: 1fr;
  }

  .info-table th {
    width: 5.5rem;
  }

  .verdict-list li {
    padding-left: 2.8rem;
  }

  .evidence-grid {
    grid-template-columns: 1fr;
  }
}