:root {
  --bg: #0a0c12;
  --bg-soft: #10131c;
  --ink: #e8e6e1;
  --ink-dim: #9a97a0;
  --ink-faint: #5c5a64;
  --line: rgba(232, 230, 225, 0.10);
  --accent: #d4a843;
  --accent-soft: rgba(212, 168, 67, 0.14);
  --card: rgba(255, 255, 255, 0.025);
  --card-hover: rgba(255, 255, 255, 0.05);
  --serif: "Palatino Linotype", Palatino, Georgia, "Songti SC", SimSun, serif;
  --sans: "Avenir Next", "Segoe UI", "PingFang SC", "Microsoft YaHei", -apple-system, sans-serif;
}

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

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* ── interference background ── */
#fringes {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}

.vignette {
  position: fixed;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background:
    radial-gradient(ellipse 120% 90% at 50% 0%, transparent 50%, var(--bg) 100%),
    linear-gradient(to bottom, transparent 70%, var(--bg) 100%);
}

.wrap {
  position: relative;
  z-index: 2;
  max-width: 880px;
  margin: 0 auto;
  padding: 0 28px;
}

/* ── nav ── */
nav {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  padding: 34px 0 0;
}

.wordmark {
  font-family: var(--serif);
  font-size: 1.05rem;
  letter-spacing: 0.14em;
  color: var(--ink);
  text-decoration: none;
}
.wordmark em { color: var(--accent); font-style: normal; }

nav .links { display: flex; gap: 28px; }

nav .links a {
  color: var(--ink-dim);
  text-decoration: none;
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  transition: color 0.25s;
}
nav .links a:hover { color: var(--ink); }
nav .links a.active { color: var(--accent); }

/* ── hero ── */
header.hero { padding: 120px 0 90px; }

.hero .kicker {
  font-size: 0.78rem;
  letter-spacing: 0.42em;
  color: var(--accent);
  text-transform: uppercase;
  margin-bottom: 26px;
}

.hero h1 {
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(2.6rem, 7vw, 4.4rem);
  letter-spacing: 0.02em;
  line-height: 1.12;
}

.hero .sub {
  margin-top: 22px;
  color: var(--ink-dim);
  font-size: 1.02rem;
  max-width: 540px;
}

.hero .sub .sep { color: var(--ink-faint); margin: 0 0.5em; }

.hero .actions { margin-top: 44px; display: flex; gap: 16px; flex-wrap: wrap; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 11px 24px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--ink);
  text-decoration: none;
  font-size: 0.88rem;
  letter-spacing: 0.05em;
  transition: border-color 0.25s, background 0.25s, transform 0.25s;
  background: transparent;
}
.btn:hover { border-color: var(--accent); background: var(--accent-soft); transform: translateY(-1px); }
.btn.primary { border-color: var(--accent); color: var(--accent); }
.btn svg { width: 16px; height: 16px; fill: currentColor; }

/* ── sections ── */
section { padding: 30px 0 60px; }

.section-head {
  display: flex;
  align-items: baseline;
  gap: 18px;
  margin-bottom: 30px;
}

.section-head h2 {
  font-family: var(--serif);
  font-weight: 400;
  font-size: 1.5rem;
  letter-spacing: 0.06em;
  white-space: nowrap;
}

.section-head .rule { flex: 1; height: 1px; background: var(--line); }

.section-head .count {
  color: var(--ink-faint);
  font-size: 0.8rem;
  letter-spacing: 0.1em;
}

/* ── repo cards ── */
.repo-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(310px, 1fr));
  gap: 16px;
}

.repo {
  display: block;
  text-decoration: none;
  color: inherit;
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 22px 24px;
  background: var(--card);
  transition: border-color 0.3s, background 0.3s, transform 0.3s;
}
.repo:hover {
  border-color: rgba(212, 168, 67, 0.45);
  background: var(--card-hover);
  transform: translateY(-3px);
}

.repo .name {
  font-family: var(--serif);
  font-size: 1.08rem;
  letter-spacing: 0.02em;
  color: var(--ink);
  display: flex;
  align-items: center;
  gap: 10px;
}

.repo .badge {
  font-family: var(--sans);
  font-size: 0.66rem;
  letter-spacing: 0.12em;
  color: var(--ink-dim);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 1.5px 9px;
}

.repo .desc {
  margin-top: 10px;
  color: var(--ink-dim);
  font-size: 0.86rem;
  line-height: 1.6;
  min-height: 2.7em;
}

.repo .meta {
  margin-top: 16px;
  display: flex;
  align-items: center;
  gap: 18px;
  font-size: 0.76rem;
  color: var(--ink-faint);
  letter-spacing: 0.04em;
}

.repo .meta .lang { display: inline-flex; align-items: center; gap: 7px; }
.repo .meta .dot { width: 9px; height: 9px; border-radius: 50%; display: inline-block; }

.loading-note { color: var(--ink-faint); font-size: 0.85rem; }

/* ── share page ── */
.share-stage {
  min-height: calc(100vh - 90px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 60px 0;
}

.share-card {
  text-align: center;
  border: 1px solid var(--line);
  border-radius: 22px;
  background: var(--card);
  padding: 54px 48px 46px;
  max-width: 460px;
  width: 100%;
  backdrop-filter: blur(6px);
}

.share-card .kicker {
  font-size: 0.74rem;
  letter-spacing: 0.4em;
  color: var(--accent);
  text-transform: uppercase;
}

.share-card h1 {
  font-family: var(--serif);
  font-weight: 400;
  font-size: 1.9rem;
  margin-top: 14px;
  letter-spacing: 0.04em;
}

.share-card .note {
  color: var(--ink-dim);
  font-size: 0.88rem;
  margin-top: 12px;
}

.qr-frame {
  margin: 34px auto 0;
  width: 232px;
  height: 232px;
  background: #fdfdfb;
  border-radius: 16px;
  padding: 14px;
  box-shadow: 0 0 0 1px var(--line), 0 18px 50px rgba(0, 0, 0, 0.45);
}
.qr-frame img, .qr-frame svg { width: 100%; height: 100%; display: block; }

.share-card .url {
  margin-top: 26px;
  font-size: 0.92rem;
  letter-spacing: 0.06em;
  color: var(--ink-dim);
}
.share-card .url a { color: var(--accent); text-decoration: none; }
.share-card .url a:hover { text-decoration: underline; }

.share-card .actions { margin-top: 28px; display: flex; justify-content: center; gap: 14px; }

/* ── footer ── */
footer {
  border-top: 1px solid var(--line);
  padding: 36px 0 48px;
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 12px;
  color: var(--ink-faint);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
}

footer a { color: var(--ink-dim); text-decoration: none; }
footer a:hover { color: var(--accent); }

@media (max-width: 560px) {
  header.hero { padding: 84px 0 64px; }
  .share-card { padding: 40px 26px 36px; }
  nav .links { gap: 18px; }
}

@media (prefers-reduced-motion: reduce) {
  #fringes { display: none; }
}