:root {
  --bg: #0b1020;
  --bg-elev: #121a2f;
  --ink: #e8eefc;
  --muted: #9aa8c7;
  --line: rgba(232, 238, 252, 0.12);
  --accent: #7eb6ff;
  --accent-2: #c9a46b;
  --card: rgba(18, 26, 47, 0.72);
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.35);
  --radius: 22px;
  --serif: "Noto Serif SC", "Songti SC", serif;
  --sans: "DM Sans", "PingFang SC", "Microsoft YaHei", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  font-family: var(--sans);
  background: var(--bg);
  line-height: 1.7;
  min-height: 100vh;
  overflow-x: hidden;
}

.bg-glow {
  position: fixed; inset: -20% auto auto -10%;
  width: 60vw; height: 60vw;
  background: radial-gradient(circle, rgba(126,182,255,.22), transparent 65%);
  filter: blur(10px); pointer-events: none; z-index: 0;
}
.ink-wash {
  position: fixed; right: -10%; top: 20%;
  width: 50vw; height: 50vw;
  background: radial-gradient(circle, rgba(201,164,107,.14), transparent 70%);
  filter: blur(8px); pointer-events: none; z-index: 0;
}

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

.site-header {
  max-width: 1100px;
  margin: 0 auto;
  padding: 28px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.logo {
  color: var(--ink);
  text-decoration: none;
  font-family: var(--serif);
  font-weight: 700;
  font-size: 1.25rem;
  letter-spacing: 0.04em;
}
.logo span {
  margin-left: 10px;
  color: var(--muted);
  font-family: var(--sans);
  font-weight: 500;
  font-size: 0.85rem;
}
nav { display: flex; gap: 18px; flex-wrap: wrap; }
nav a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.95rem;
  transition: color .2s ease;
}
nav a:hover { color: var(--ink); }

.hero {
  max-width: 1100px;
  margin: 24px auto 72px;
  padding: 0 24px 24px;
}
.eyebrow {
  color: var(--accent);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  font-size: 0.78rem;
  font-weight: 600;
}
.hero h1 {
  font-family: var(--serif);
  font-size: clamp(2.4rem, 6vw, 4.2rem);
  line-height: 1.2;
  margin: 12px 0 18px;
  font-weight: 700;
}
.hero h1 em {
  font-style: normal;
  color: var(--accent-2);
}
.lead {
  max-width: 640px;
  color: var(--muted);
  font-size: 1.08rem;
}
.hero-actions { display: flex; gap: 12px; margin: 28px 0 36px; flex-wrap: wrap; }
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 12px 20px; border-radius: 999px;
  text-decoration: none; font-weight: 600; font-size: 0.95rem;
  border: 1px solid transparent; transition: .2s ease;
}
.btn.primary { background: linear-gradient(135deg, #7eb6ff, #5a8fe0); color: #071018; }
.btn.primary:hover { transform: translateY(-1px); box-shadow: 0 10px 30px rgba(126,182,255,.35); }
.btn.ghost { border-color: var(--line); color: var(--ink); background: rgba(255,255,255,.03); }
.btn.ghost:hover { border-color: rgba(232,238,252,.28); }

.hero-meta {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}
.hero-meta div {
  padding: 16px 18px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--card);
  backdrop-filter: blur(10px);
}
.hero-meta strong { display: block; font-family: var(--serif); margin-bottom: 4px; }
.hero-meta span { color: var(--muted); font-size: 0.9rem; }

.panel {
  max-width: 1100px;
  margin: 0 auto 84px;
  padding: 0 24px;
}
.panel-head { margin-bottom: 24px; }
.panel-head h2 {
  font-family: var(--serif);
  font-size: 2rem;
  margin: 0 0 6px;
}
.panel-head p { margin: 0; color: var(--muted); }

.about-grid, .project-row, .notes {
  display: grid;
  gap: 16px;
}
.about-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.card, .project, .notes article, .contact-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(12px);
}
.card h3, .project h3, .notes h3 {
  font-family: var(--serif);
  margin: 0 0 10px;
  font-size: 1.2rem;
}
.card p, .project p, .notes p { margin: 0; color: var(--muted); }

.project.featured {
  margin-bottom: 16px;
  background:
    linear-gradient(135deg, rgba(126,182,255,.12), rgba(201,164,107,.08)),
    var(--card);
}
.project-badge {
  display: inline-block;
  font-size: 0.75rem;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--accent);
  border: 1px solid rgba(126,182,255,.35);
  border-radius: 999px;
  padding: 4px 10px;
  margin-bottom: 12px;
}
.project ul { margin: 14px 0 0; padding-left: 18px; color: var(--muted); }
.project code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  color: var(--accent);
  font-size: 0.92em;
}
.project-row { grid-template-columns: repeat(2, minmax(0, 1fr)); }

.notes { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.notes time {
  display: block;
  color: var(--accent-2);
  font-size: 0.85rem;
  margin-bottom: 8px;
}

.contact-card strong { color: var(--accent); }
.muted { color: var(--muted); }

.site-footer {
  max-width: 1100px;
  margin: 0 auto;
  padding: 24px 24px 48px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.92rem;
}
.site-footer p { margin: 0 0 6px; }

@media (max-width: 860px) {
  .hero-meta, .about-grid, .project-row, .notes { grid-template-columns: 1fr; }
  .site-header { flex-direction: column; align-items: flex-start; }
}