:root {
  --bg: #f7f5f1;
  --surface: #ffffff;
  --text: #1c2430;
  --muted: #5b6573;
  --accent: #0b3d5c;
  --accent-soft: #e8f0f6;
  --border: #e2e6ec;
  --shadow: 0 12px 40px rgba(11, 61, 92, 0.08);
  --radius: 18px;
  --font: "Segoe UI", system-ui, -apple-system, "PingFang SC", "Noto Sans SC",
    "Microsoft YaHei", sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f141a;
    --surface: #171d25;
    --text: #e8edf3;
    --muted: #9aa6b5;
    --accent: #8ec5e8;
    --accent-soft: #1a2834;
    --border: #2a3441;
    --shadow: 0 12px 40px rgba(0, 0, 0, 0.35);
  }
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font);
  color: var(--text);
  background:
    radial-gradient(1200px 600px at 10% -10%, var(--accent-soft), transparent 55%),
    radial-gradient(900px 500px at 100% 0%, rgba(200, 155, 60, 0.08), transparent 50%),
    var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

.wrap {
  width: min(920px, calc(100% - 2rem));
  margin: 0 auto;
  padding: 2.5rem 0 3rem;
}

.topbar {
  display: flex;
  justify-content: flex-end;
  gap: 0.5rem;
  margin-bottom: 1.25rem;
}

.lang-btn {
  appearance: none;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--muted);
  border-radius: 999px;
  padding: 0.35rem 0.85rem;
  font: inherit;
  font-size: 0.85rem;
  cursor: pointer;
}
.lang-btn[aria-pressed="true"] {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}
@media (prefers-color-scheme: dark) {
  .lang-btn[aria-pressed="true"] { color: #0f141a; }
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: clamp(1.4rem, 3vw, 2.2rem);
}

.hero {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 1.5rem;
  align-items: center;
}

.avatar {
  width: 140px;
  height: 140px;
  border-radius: 50%;
  object-fit: cover;
  border: 3px solid var(--accent-soft);
  background: var(--accent-soft);
}

h1 {
  margin: 0 0 0.35rem;
  font-size: clamp(1.7rem, 4vw, 2.35rem);
  letter-spacing: -0.02em;
  color: var(--accent);
  line-height: 1.15;
}
.h1-sub {
  display: block;
  margin-top: 0.25rem;
  font-size: 1rem;
  font-weight: 500;
  color: var(--muted);
  letter-spacing: 0.12em;
}

.tagline {
  margin: 0.35rem 0 0;
  color: var(--muted);
  font-size: 0.98rem;
}

.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin-top: 1rem;
}
.chip {
  display: inline-flex;
  align-items: center;
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0.35rem 0.8rem;
  font-size: 0.86rem;
  color: var(--text);
  background: var(--bg);
}
a.chip:hover {
  border-color: var(--accent);
  color: var(--accent);
  text-decoration: none;
}

.section { margin-top: 1.75rem; }
.section h2 {
  margin: 0 0 0.7rem;
  font-size: 1.05rem;
  color: var(--accent);
  letter-spacing: 0.02em;
}
.section p { margin: 0; color: var(--text); }

.interests {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.55rem;
}
.interests li {
  padding: 0.7rem 0.9rem;
  border-radius: 12px;
  background: var(--accent-soft);
  border: 1px solid transparent;
  color: var(--text);
  font-size: 0.95rem;
}

.footer {
  margin-top: 1.5rem;
  text-align: center;
  color: var(--muted);
  font-size: 0.85rem;
}

@media (max-width: 640px) {
  .wrap { width: min(100%, calc(100% - 1.25rem)); padding-top: 1.25rem; }
  .hero {
    grid-template-columns: 1fr;
    text-align: center;
    justify-items: center;
  }
  .chips { justify-content: center; }
  .avatar { width: 120px; height: 120px; }
}