/* ShieldyH 全站排版层（深色 · 可读性优先）
   用法：在每个页面的 inline <style> 之后引入；只做“覆盖”，不改页面结构。 */

:root {
  --bg: #0b0d12;
  --surface: #141821;
  --surface2: #1b202b;
  --surface-hover: #1b202b;
  --border: #242b37;
  --text: #e8ebf1;
  --text-dim: #9aa4b3;
  --accent: #6aa7ee;
  --accent-glow: #9cc6ff;
  --radius: 12px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
          "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --mono: "SF Mono", "JetBrains Mono", "Fira Code", Menlo, Consolas, monospace;
}

* { box-sizing: border-box; }

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

body {
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.8;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4 {
  font-family: var(--font);
  font-weight: 700;
  line-height: 1.35;
  letter-spacing: -0.01em;
}
h1 { font-size: clamp(1.9rem, 4.2vw, 2.6rem); }
h2 { font-size: clamp(1.2rem, 2.2vw, 1.45rem); }
h3 { font-size: 1.05rem; }

p, li { color: #d5dae2; line-height: 1.85; }

a { color: var(--accent); }

code, pre, kbd, samp { font-family: var(--mono); }

header {
  padding: 16px clamp(16px, 4vw, 44px);
  border-bottom: 1px solid var(--border);
}
.logo {
  font-family: var(--mono);
  font-size: 1.05rem;
  letter-spacing: 0.03em;
  text-decoration: none;
}
.nav-item {
  font-size: 0.9rem;
  padding: 8px 14px;
  border-radius: 8px;
}

.hero {
  padding: clamp(48px, 7vw, 84px) 20px clamp(40px, 6vw, 64px);
}
.hero h1 { letter-spacing: -0.02em; }
.hero .subtitle {
  font-size: 1rem;
  line-height: 1.9;
  color: var(--text-dim);
  max-width: 44rem;
  margin-left: auto;
  margin-right: auto;
}

.wrap, .container, .content, .cards-section {
  max-width: 1080px;
  margin-left: auto;
  margin-right: auto;
}

.cards-section {
  padding: clamp(40px, 6vw, 64px) clamp(16px, 4vw, 40px);
  gap: 20px;
}
.card, .feature-card {
  padding: 26px;
  border-radius: 14px;
  border: 1px solid var(--border);
  background: var(--surface);
  transition: border-color .18s ease, background .18s ease, transform .18s ease;
}
.card:hover, .feature-card:hover {
  border-color: rgba(106, 167, 238, 0.35);
  background: var(--surface2);
  transform: translateY(-2px);
}
.card h2, .card h3, .feature-card h3 { font-size: 1.08rem; line-height: 1.45; }
.card p, .feature-card p { font-size: 0.92rem; line-height: 1.85; color: var(--text-dim); }
.card .card-link { font-size: 0.85rem; }

.section-title {
  font-size: 0.8rem;
  letter-spacing: 0.14em;
  color: var(--text-dim);
  text-transform: uppercase;
}

.note {
  font-size: 0.9rem;
  line-height: 1.9;
  border-radius: 12px;
}

table { font-size: 0.92rem; }
th, td { padding: 10px 12px; }

footer {
  padding: 40px 20px;
  border-top: 1px solid var(--border);
  color: var(--text-dim);
  font-size: 0.8rem;
}
footer a { color: var(--text-dim); }

@media (max-width: 768px) {
  body { font-size: 15px; }
  h1 { font-size: 1.55rem; }
  header { padding: 12px 16px; gap: 10px; }
  .top-nav { width: 100%; flex-wrap: wrap; gap: 2px; }
  .nav-item { font-size: 0.85rem; padding: 7px 12px; white-space: nowrap; }
  .hero { padding: 40px 16px 32px; }
  .hero .subtitle { font-size: 0.95rem; }
  .cards-section, .wrap, .container, .content {
    padding-left: 16px;
    padding-right: 16px;
  }
  .card, .feature-card { padding: 20px; }
}

/* 页面级组件微调 */
.cards-section { grid-template-columns: repeat(2, 1fr); }
.skill-card .download-btn {
  background: var(--surface2);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 8px;
  font-weight: 600;
}
.skill-card .download-btn:hover {
  background: var(--surface);
  border-color: rgba(106, 167, 238, 0.45);
  color: var(--accent);
}
.skill-card .name { color: #cfe1f7; }
.skill-card .meta .tag { background: rgba(255, 255, 255, 0.05); color: var(--text-dim); }
@media (max-width: 768px) {
  .cards-section { grid-template-columns: 1fr; }
}