:root {
  --bg-primary: #0d0f14;
  --bg-secondary: #161920;
  --bg-card: #1e2230;
  --text-primary: #f0f2f8;
  --text-secondary: #9aa3b8;
  --accent-gold: #f5c842;
  --accent-blue: #4a7ef5;
  --green-verified: #3db86a;
  --orange-conflict: #f07832;
  --red-expired: #ef5350;
  --border: rgba(255, 255, 255, 0.1);
  --shadow: 0 24px 70px rgba(0, 0, 0, 0.35);
  --radius: 18px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.7;
  color: var(--text-primary);
  background:
    radial-gradient(circle at 15% 5%, rgba(245, 200, 66, 0.14), transparent 34rem),
    radial-gradient(circle at 85% 12%, rgba(74, 126, 245, 0.13), transparent 32rem),
    var(--bg-primary);
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image: linear-gradient(rgba(255,255,255,0.025) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,0.025) 1px, transparent 1px);
  background-size: 42px 42px;
  mask-image: linear-gradient(to bottom, #000, transparent 80%);
}

a { color: var(--accent-blue); text-decoration: none; }
a:hover { text-decoration: underline; }

img { max-width: 100%; height: auto; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid var(--border);
  background: rgba(13, 15, 20, 0.86);
  backdrop-filter: blur(18px);
}

.nav-shell {
  max-width: 1160px;
  margin: 0 auto;
  padding: 14px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

.logo {
  color: var(--text-primary);
  font-weight: 850;
  letter-spacing: -0.03em;
  white-space: nowrap;
}

.logo span { color: var(--accent-gold); }

.nav-links {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.nav-links a {
  color: var(--text-secondary);
  padding: 8px 11px;
  border-radius: 999px;
  font-size: 0.92rem;
  font-weight: 700;
}

.nav-links a:hover,
.nav-links a[aria-current="page"] {
  color: var(--text-primary);
  background: rgba(255,255,255,0.075);
  text-decoration: none;
}

main {
  max-width: 1160px;
  margin: 0 auto;
  padding: 28px 20px 100px;
}

.breadcrumb {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin: 4px 0 24px;
}

.breadcrumb ol {
  display: flex;
  gap: 8px;
  align-items: center;
  padding: 0;
  margin: 0;
  list-style: none;
  flex-wrap: wrap;
}

.breadcrumb li:not(:last-child)::after {
  content: "/";
  margin-left: 8px;
  color: rgba(154,163,184,0.55);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.38fr) minmax(280px, 0.62fr);
  gap: 22px;
  align-items: stretch;
  margin-bottom: 22px;
}

.hero-panel,
.card,
.notice-panel,
.table-card,
.faq-item,
.code-card,
.source-card,
.steps-card {
  background: linear-gradient(145deg, rgba(30, 34, 48, 0.96), rgba(22, 25, 32, 0.88));
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.hero-panel { padding: 34px; }

.kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 10px;
  border: 1px solid rgba(245, 200, 66, 0.3);
  border-radius: 999px;
  color: var(--accent-gold);
  background: rgba(245, 200, 66, 0.08);
  font-size: 0.84rem;
  font-weight: 800;
}

h1, h2, h3 { line-height: 1.18; margin: 0 0 14px; letter-spacing: -0.035em; }
h1 { font-size: clamp(2.15rem, 6vw, 4.6rem); margin-top: 16px; }
h2 { font-size: clamp(1.45rem, 3vw, 2.25rem); }
h3 { font-size: 1.15rem; }

.lead { color: var(--text-secondary); font-size: 1.08rem; max-width: 760px; }

.byline {
  margin: 12px 0 0;
  color: var(--text-secondary);
  font-size: 0.94rem;
}
.byline a { color: var(--accent-gold); font-weight: 800; }

.hero-media {
  margin-top: 20px;
  border-radius: 18px;
  overflow: hidden;
  border: 1px solid rgba(245, 200, 66, 0.22);
  background: rgba(255,255,255,0.05);
}
.hero-media img {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}
.media-caption {
  margin: 0;
  padding: 10px 12px;
  color: var(--text-secondary);
  font-size: 0.88rem;
  border-top: 1px solid var(--border);
}

.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 24px; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 16px;
  border-radius: 12px;
  border: 1px solid rgba(255,255,255,0.12);
  font-weight: 850;
  color: var(--text-primary);
  background: rgba(255,255,255,0.07);
  min-height: 46px;
}

.btn:hover { text-decoration: none; transform: translateY(-1px); }
.btn.primary { color: #111318; background: linear-gradient(135deg, var(--accent-gold), #ffe79b); border-color: transparent; }
.btn.secondary { background: rgba(74, 126, 245, 0.15); border-color: rgba(74,126,245,0.35); }

.stats-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.stat-card {
  padding: 18px;
  background: rgba(255,255,255,0.055);
  border: 1px solid var(--border);
  border-radius: 15px;
}
.stat-card strong { display: block; font-size: 1.5rem; color: var(--accent-gold); }
.stat-card span { color: var(--text-secondary); font-size: 0.9rem; }

.hero-side { padding: 22px; }

.checklist { padding: 0; margin: 0; list-style: none; display: grid; gap: 12px; }
.checklist li { display: flex; gap: 10px; color: var(--text-secondary); }
.checklist li::before { content: "✓"; color: var(--green-verified); font-weight: 900; }

.section { margin-top: 38px; }
.section-head { display: flex; justify-content: space-between; align-items: end; gap: 18px; margin-bottom: 16px; }
.section-head p { color: var(--text-secondary); margin: 0; max-width: 760px; }

.notice-panel { padding: 18px 20px; border-color: rgba(245, 200, 66, 0.24); background: linear-gradient(135deg, rgba(245,200,66,0.11), rgba(30,34,48,0.9)); }
.notice-panel strong { color: var(--accent-gold); }

.grid-2 { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }

.code-list { display: grid; gap: 14px; }

.code-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.code-grid .code-card {
  min-height: 188px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}
.code-grid .code-card h3 { margin-top: 10px; }
.code-grid .copy-btn { align-self: flex-start; margin-top: 12px; }

.code-card { padding: 20px; }
.code-card.conflict { border-color: rgba(240, 120, 50, 0.38); }
.code-card.expired { opacity: 0.86; }

.code-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  flex-wrap: wrap;
}

.code-string {
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: 1.08rem;
  color: var(--accent-gold);
  background: rgba(0,0,0,0.25);
  border: 1px solid rgba(245, 200, 66, 0.18);
  border-radius: 12px;
  padding: 8px 10px;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border-radius: 999px;
  padding: 5px 9px;
  font-size: 0.8rem;
  font-weight: 850;
}
.badge.verified { color: #dffff0; background: rgba(61,184,106,0.16); border: 1px solid rgba(61,184,106,0.32); }
.badge.conflict { color: #ffe2d0; background: rgba(240,120,50,0.15); border: 1px solid rgba(240,120,50,0.36); }
.badge.expired { color: #ffd6d6; background: rgba(239,83,80,0.16); border: 1px solid rgba(239,83,80,0.34); }

.code-meta { color: var(--text-secondary); margin: 10px 0 0; }
.code-meta small { color: #d6b8a4; }
.code-source { color: var(--text-secondary); font-size: 0.9rem; margin: 8px 0 0; }

.copy-btn {
  border: 0;
  border-radius: 12px;
  padding: 9px 12px;
  font-weight: 850;
  color: #111318;
  background: var(--accent-gold);
  cursor: pointer;
}
.copy-btn.copied { background: var(--green-verified); color: white; }

.table-card { overflow: hidden; }
.table-scroll { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; min-width: 760px; }
th, td { padding: 14px 16px; border-bottom: 1px solid var(--border); text-align: left; vertical-align: top; }
th { color: var(--accent-gold); background: rgba(255,255,255,0.035); font-size: 0.88rem; }
td { color: var(--text-secondary); }
td strong { color: var(--text-primary); }

.steps-card { padding: 22px; }
.steps-card ol, .steps-card ul { margin: 0; padding-left: 22px; color: var(--text-secondary); }
.steps-card li + li { margin-top: 10px; }
.steps-card strong { color: var(--text-primary); }

.source-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; }
.source-card { padding: 18px; }
.source-card p { color: var(--text-secondary); margin: 8px 0 0; }

.faq-list { display: grid; gap: 14px; }
.faq-item { padding: 20px; }
.faq-item h3 { margin-bottom: 8px; }
.faq-item p { margin: 0; color: var(--text-secondary); }

.related-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; }
.related-card { display: block; padding: 18px; background: rgba(255,255,255,0.055); border: 1px solid var(--border); border-radius: 15px; color: var(--text-primary); }
.related-card:hover { text-decoration: none; border-color: rgba(245,200,66,0.3); }
.related-card span { display: block; color: var(--text-secondary); margin-top: 4px; font-size: 0.92rem; }

.site-footer {
  border-top: 1px solid var(--border);
  padding: 30px 20px 80px;
  color: var(--text-secondary);
  background: rgba(0,0,0,0.16);
}
.footer-inner { max-width: 1160px; margin: 0 auto; display: flex; justify-content: space-between; gap: 20px; flex-wrap: wrap; }

.mobile-bottom-nav {
  display: none;
  position: fixed;
  left: 12px;
  right: 12px;
  bottom: 12px;
  z-index: 30;
  padding: 8px;
  border: 1px solid var(--border);
  border-radius: 18px;
  background: rgba(13, 15, 20, 0.92);
  backdrop-filter: blur(16px);
  box-shadow: var(--shadow);
  grid-template-columns: repeat(4, 1fr);
  gap: 6px;
}
.mobile-bottom-nav a { color: var(--text-secondary); text-align: center; padding: 8px 4px; border-radius: 12px; font-size: 0.78rem; font-weight: 800; }
.mobile-bottom-nav a[aria-current="page"], .mobile-bottom-nav a:hover { color: var(--text-primary); background: rgba(255,255,255,0.075); text-decoration: none; }

@media (max-width: 840px) {
  .nav-shell { align-items: flex-start; flex-direction: column; }
  .hero { grid-template-columns: 1fr; }
  .grid-2, .grid-3, .source-grid, .related-grid, .code-grid { grid-template-columns: 1fr; }
  .section-head { display: block; }
  .hero-panel { padding: 24px; }
  main { padding-bottom: 120px; }
  .mobile-bottom-nav { display: grid; }
}

@media (max-width: 560px) {
  .nav-links { display: none; }
  .stats-grid { grid-template-columns: 1fr; }
  h1 { font-size: 2.35rem; }
  .code-header { align-items: flex-start; }
  .copy-btn { width: 100%; }
}