/* ---------- 主题变量 ---------- */

:root {
  --bg: #0d1117;
  --surface: #161b22;
  --surface-2: #1c2430;
  --fg: #e6edf3;
  --fg-soft: #c9d1d9;
  --muted: #8b949e;
  --border: #30363d;
  --accent: #8b5cf6;
  --accent-2: #ec4899;
  --pill: rgba(139, 92, 246, .14);
  --shadow: 0 1px 2px rgba(1, 4, 9, .4);
  color-scheme: dark;
}

@media (prefers-color-scheme: light) {
  :root:not([data-theme="dark"]) {
    --bg: #ffffff;
    --surface: #ffffff;
    --surface-2: #f6f8fa;
    --fg: #1f2328;
    --fg-soft: #32383f;
    --muted: #59636e;
    --border: #d1d9e0;
    --pill: rgba(139, 92, 246, .10);
    --shadow: 0 1px 3px rgba(31, 35, 40, .08);
    color-scheme: light;
  }
}

:root[data-theme="light"] {
  --bg: #ffffff;
  --surface: #ffffff;
  --surface-2: #f6f8fa;
  --fg: #1f2328;
  --fg-soft: #32383f;
  --muted: #59636e;
  --border: #d1d9e0;
  --pill: rgba(139, 92, 246, .10);
  --shadow: 0 1px 3px rgba(31, 35, 40, .08);
  color-scheme: light;
}

/* ---------- 基础 ---------- */

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 16px/1.7 system-ui, -apple-system, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; }

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 8px;
}

.wrap {
  max-width: 780px;
  margin: 0 auto;
  padding: 26px 24px 64px;
}

/* ---------- 工具条 ---------- */

.toolbar {
  display: flex;
  justify-content: flex-end;
  align-items: center;
  gap: 8px;
  margin-bottom: 22px;
}

.tool {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  height: 32px;
  padding: 0 11px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: transparent;
  color: var(--muted);
  font: inherit;
  font-size: .8rem;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: color .15s ease, border-color .15s ease;
}

.tool:hover { color: var(--fg); border-color: var(--accent); }

.tool svg { display: block; }

.tool .ico { display: none; }

html[data-theme="light"] .tool .ico-light,
html[data-theme="dark"] .tool .ico-dark,
html[data-theme="auto"] .tool .ico-auto,
html:not([data-theme]) .tool .ico-auto { display: block; }

/* ---------- hero ---------- */

.hero { text-align: center; }

.avatar {
  width: 112px;
  height: 112px;
  border-radius: 50%;
  border: 2px solid transparent;
  background:
    linear-gradient(var(--bg), var(--bg)) padding-box,
    linear-gradient(135deg, var(--accent), var(--accent-2)) border-box;
  padding: 3px;
}

.hero h1 {
  margin: 20px 0 4px;
  font-size: 2rem;
  letter-spacing: -.01em;
}

.handle {
  margin: 0;
  color: var(--muted);
  font-size: .94rem;
}

.tagline {
  margin: 18px 0 0;
  font-weight: 600;
  font-size: 1rem;
  letter-spacing: .01em;
}

.tagline span {
  margin: 0 .45em;
  color: var(--accent);
  font-weight: 400;
}

.lede {
  margin: 8px 0 0;
  color: var(--muted);
}

.links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
  margin-top: 26px;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 9px 16px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--surface-2);
  color: var(--fg);
  font-size: .9rem;
  font-weight: 600;
  text-decoration: none;
  transition: border-color .15s ease, transform .15s ease, background .15s ease;
}

.btn:hover { border-color: var(--accent); transform: translateY(-1px); }

.btn.primary {
  border-color: transparent;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #fff;
}

.btn.primary:hover { filter: brightness(1.07); }

.btn.ghost { background: transparent; }

.btn.lg { padding: 12px 26px; font-size: .95rem; }

/* ---------- 区块 ---------- */

.section { margin-top: 56px; }

.section h2 {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 18px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border);
  font-size: 1.15rem;
  font-weight: 600;
}

.section h2 img { display: block; }

.facts {
  margin: 0;
  padding-left: 1.2em;
}

.facts li { margin: .4em 0; color: var(--fg-soft); }

.facts strong { color: var(--fg); }

/* ---------- 项目卡片 ---------- */

.cards {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.card {
  display: block;
  padding: 18px;
  border-radius: 14px;
  border: 1px solid var(--border);
  background: var(--surface);
  box-shadow: var(--shadow);
  color: inherit;
  text-decoration: none;
  transition: border-color .18s ease, transform .18s ease;
}

.card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
}

.card-head {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 8px;
}

.card-head h3 {
  margin: 0;
  font-size: 1rem;
  font-weight: 600;
  color: var(--accent);
}

.card p {
  margin: 0;
  color: var(--muted);
  font-size: .875rem;
  line-height: 1.65;
}

.stats {
  display: flex;
  gap: 8px;
  margin-top: 14px !important;
}

.pill {
  display: inline-block;
  padding: 2px 9px;
  border-radius: 999px;
  background: var(--pill);
  color: var(--accent);
  font-size: .78rem;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}

@media (prefers-color-scheme: light) {
  :root:not([data-theme="dark"]) .pill { color: #7c3aed; }
}

:root[data-theme="light"] .pill { color: #7c3aed; }

/* 主卡：VeneraNext 跨两列并带星标曲线 */

.card.featured {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  gap: 28px;
  align-items: center;
  padding: 22px;
}

.chart { margin: 0; min-width: 0; }

.chart img { display: block; width: 100%; height: auto; }

.chart figcaption {
  margin-top: 8px;
  color: var(--muted);
  font-size: .74rem;
  text-align: right;
  font-variant-numeric: tabular-nums;
}

.more {
  margin: 18px 0 0;
  color: var(--muted);
  font-size: .875rem;
}

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

/* ---------- chips ---------- */

.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.chips li {
  padding: 5px 13px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--surface-2);
  font-size: .84rem;
  font-weight: 500;
  color: var(--fg-soft);
}

/* ---------- CTA ---------- */

.cta {
  padding: 34px 24px;
  border-radius: 18px;
  border: 1px solid transparent;
  background:
    linear-gradient(var(--surface), var(--surface)) padding-box,
    linear-gradient(135deg, var(--accent), var(--accent-2)) border-box;
  text-align: center;
}

.cta-title {
  margin: 0;
  font-size: 1.15rem;
  font-weight: 700;
}

.cta-sub {
  margin: 6px 0 20px;
  color: var(--muted);
  font-size: .9rem;
}

/* ---------- 页脚 ---------- */

footer {
  margin-top: 64px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
  text-align: center;
  font-size: .875rem;
}

footer p {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  margin: 0 0 6px;
  flex-wrap: wrap;
}

.muted { color: var(--muted); font-size: .8rem; }

/* ---------- 响应式 ---------- */

@media (max-width: 720px) {
  .card.featured { grid-template-columns: 1fr; }
  .chart figcaption { text-align: left; }
}

@media (max-width: 640px) {
  .cards { grid-template-columns: 1fr; }
  .wrap { padding: 20px 20px 48px; }
  .hero h1 { font-size: 1.65rem; }
}

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; }
}