/* 数字人星球 — 公开站基础组件 */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font);
  background: var(--bg-color);
  color: var(--text-secondary);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 24px; }

/* nav */
.site-nav {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255,255,255,.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-color);
}
.nav-inner {
  display: flex; align-items: center; justify-content: space-between;
  height: 68px;
}
.brand {
  display: flex; align-items: center; gap: 10px;
  font-weight: 700; font-size: 18px; color: var(--text-primary);
}
.brand-mark {
  width: 36px; height: 36px; border-radius: 10px;
  background: linear-gradient(135deg, var(--primary-color), var(--accent-violet));
  display: grid; place-items: center; color: #fff; font-size: 16px;
}
.brand-sub { font-size: 10px; font-weight: 600; letter-spacing: .12em; text-transform: uppercase; color: var(--text-muted); }
.nav-links { display: flex; gap: 28px; font-size: 14px; font-weight: 500; color: var(--text-primary); }
.nav-links a:hover { color: var(--primary-color); }
.nav-actions { display: flex; gap: 10px; align-items: center; }
@media (max-width: 768px) { .nav-links { display: none; } }

/* buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  font-family: inherit; font-size: 14px; font-weight: 600;
  padding: 10px 20px; border-radius: var(--radius-md);
  border: 1px solid transparent; cursor: pointer;
  transition: transform .15s, box-shadow .15s, background .15s;
}
.btn-primary {
  background: var(--teal, var(--primary-color)); color: #fff;
  box-shadow: 0 4px 14px rgb(47 158 222 / 0.35);
}
.btn-primary:hover { background: var(--teal-dark, var(--primary-hover)); }
.btn-ghost {
  background: var(--surface); color: var(--text-primary);
  border-color: var(--border-color);
}
.btn-ghost:hover { border-color: var(--primary-color); color: var(--primary-color); }
.btn-sm { padding: 7px 14px; font-size: 13px; }

/* sections */
section { padding: 80px 0; }
.section-muted { background: var(--surface-muted); }
.sec-head { text-align: center; max-width: 640px; margin: 0 auto 48px; }
.sec-head .eyebrow {
  font-size: 12px; font-weight: 700; letter-spacing: .1em; text-transform: uppercase;
  color: var(--primary-color); margin-bottom: 10px;
}
.sec-head h2 { font-size: 32px; font-weight: 700; color: var(--text-primary); letter-spacing: -.02em; margin-bottom: 12px; }
.sec-head p { font-size: 16px; }

/* dh card (market) */
.dh-card {
  background: var(--surface); border: 1px solid var(--border-color);
  border-radius: var(--radius-lg); overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: transform .2s, box-shadow .2s, border-color .2s;
}
.dh-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: rgba(14,165,233,.3); }
.dh-card .av-wrap {
  aspect-ratio: 1; background: linear-gradient(160deg, var(--primary-soft), #faf5ff);
  display: grid; place-items: center; padding: 24px;
}
.dh-card .av-wrap img {
  width: 120px; height: 120px; border-radius: 50%; object-fit: cover;
  border: 3px solid #fff; box-shadow: var(--shadow-md);
}
.dh-card .body { padding: 18px 20px 20px; }
.dh-card .name { font-size: 17px; font-weight: 700; color: var(--text-primary); }
.dh-card .nick { font-size: 13px; color: var(--text-muted); margin-top: 2px; }
.dh-card .tagline { font-size: 14px; margin-top: 10px; line-height: 1.5; min-height: 42px; }
.dh-card .chips { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 12px; }
.chip {
  font-size: 11px; font-weight: 600; padding: 3px 10px; border-radius: 999px;
  background: var(--primary-soft); color: var(--primary-hover);
}
.dh-card .actions { display: flex; gap: 8px; margin-top: 16px; }
.dh-card .actions .btn { flex: 1; }

.card-grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px;
}
@media (max-width: 960px) { .card-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 520px) { .card-grid { grid-template-columns: 1fr; } }

/* skill chip row */
.skill-row { display: flex; flex-wrap: wrap; gap: 8px; }
.skill-tag {
  font-size: 12px; font-weight: 600; padding: 5px 12px; border-radius: 999px;
  background: var(--surface); border: 1px solid var(--border-color); color: var(--text-primary);
}

/* footer */
.site-footer {
  background: #18181b; color: #a1a1aa; padding: 40px 0; text-align: center; font-size: 13px;
}
.site-footer .brand-name { color: #fafafa; font-weight: 700; font-size: 15px; margin-bottom: 6px; }