/* ============================================================
   HanliangCMS — 前端设计系统（通用）
   换站只需改 :root 里的 --accent 系列即可全站统一品牌色。
   ============================================================ */
:root {
  --bg: #ffffff;
  --bg-soft: #f6f7f9;
  --surface: #ffffff;
  --border: #e6e8eb;
  --text: #1c2024;
  --text-soft: #5b6470;
  --text-dim: #8a93a0;

  --accent: #2563eb;
  --accent-strong: #1d4ed8;
  --accent-soft: #eef3ff;
  --accent-contrast: #ffffff;

  --radius: 14px;
  --radius-sm: 10px;
  --shadow: 0 1px 2px rgba(16,24,40,.06), 0 6px 20px rgba(16,24,40,.06);
  --shadow-hover: 0 4px 10px rgba(16,24,40,.10), 0 14px 34px rgba(16,24,40,.10);

  --maxw: 1120px;
  --gap: 18px;

  --font: "Outfit", "Segoe UI", system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font);
  color: var(--text);
  background: var(--bg);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; }
h1, h2, h3, h4 { line-height: 1.25; margin: 0 0 .5em; font-weight: 700; }

.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 20px; }

/* ---------- Header ---------- */
.header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255,255,255,.86);
  backdrop-filter: saturate(180%) blur(10px);
  border-bottom: 1px solid var(--border);
}
.header-inner { display: flex; align-items: center; gap: 18px; height: 64px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 800; font-size: 19px; }
.brand .logo {
  display: grid; place-items: center;
  width: 34px; height: 34px; border-radius: 9px;
  overflow: hidden; flex: none;
}
.brand .logo svg { width: 20px; height: 20px; }
.brand .logo img { width: 100%; height: 100%; object-fit: cover; display: block; }
.nav { display: flex; gap: 6px; margin-left: 10px; flex: 1; }
.nav a { padding: 8px 12px; border-radius: 9px; color: var(--text-soft); font-weight: 600; font-size: 15px; }
.nav a:hover { background: var(--bg-soft); color: var(--text); }
.nav a.active { color: var(--accent); background: var(--accent-soft); }
.header-actions { display: flex; align-items: center; gap: 10px; }
.lang-switch {
  padding: 8px 14px; border-radius: 999px; font-weight: 600; font-size: 14px;
  border: 1px solid var(--border); color: var(--text-soft); background: var(--surface);
}
.lang-switch:hover { border-color: var(--accent); color: var(--accent); }

/* ---------- Layout sections ---------- */
main { display: block; }
.section { padding: 40px 0; border-top: 1px solid var(--border); }
.section:first-of-type { border-top: 0; }
.section-title {
  font-size: 22px; margin-bottom: 20px; display: flex; align-items: center; gap: 10px;
}
.section-title::before {
  content: ""; width: 5px; height: 22px; border-radius: 4px; background: var(--accent);
}

/* ---------- Hero ---------- */
.hero {
  padding: 72px 0 48px; text-align: center;
  background:
    radial-gradient(1200px 320px at 50% -40%, var(--accent-soft), transparent 70%);
}
.hero h1 { font-size: clamp(28px, 5vw, 44px); margin-bottom: 14px; }
.hero p { color: var(--text-soft); max-width: 640px; margin: 0 auto; font-size: 17px; }

/* ---------- Grids / Cards ---------- */
.cat-grid, .mfr-grid, .article-grid {
  display: grid; gap: var(--gap);
  grid-template-columns: repeat(4, 1fr);
}
.card, .cat-card, .mfr-card, .article-card {
  display: block;
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 18px;
  box-shadow: var(--shadow); transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease;
}
a.cat-card, a.article-card { color: inherit; }
a.cat-card:hover, a.article-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-hover); border-color: color-mix(in srgb, var(--accent) 40%, var(--border)); }

.cat-card { text-align: left; }
.cat-icon { display: grid; place-items: center; width: 44px; height: 44px; border-radius: 12px; background: var(--accent-soft); color: var(--accent); margin-bottom: 12px; }
.cat-icon svg { width: 24px; height: 24px; }
.cat-name { font-weight: 700; font-size: 16px; }
.cat-desc { color: var(--text-soft); font-size: 13.5px; margin-top: 4px; }

.mfr-card { text-align: left; }
.mfr-logo {
  display: grid; place-items: center; width: 48px; height: 48px; border-radius: 12px;
  background: var(--c, #3b82f6); color: #fff; font-weight: 800; font-size: 20px; margin-bottom: 12px;
}
.mfr-name { font-weight: 700; font-size: 15.5px; }
.mfr-desc { color: var(--text-soft); font-size: 13.5px; margin-top: 4px; }

.article-card { display: flex; flex-direction: column; }
.article-title { font-size: 17px; margin-bottom: 8px; }
.article-excerpt { color: var(--text-soft); font-size: 14px; margin: 0 0 12px; flex: 1; }
.article-meta { color: var(--text-dim); font-size: 12.5px; }

/* ---------- Article page ---------- */
.article-main { padding: 36px 0 56px; }
.article { max-width: 760px; margin: 0 auto; }
.article-head { margin-bottom: 22px; }
.article-byline { color: var(--text-dim); font-size: 14px; display: flex; gap: 8px; flex-wrap: wrap; }
.article-body { font-size: 16.5px; }
.article-body h2 { font-size: 24px; margin-top: 1.6em; }
.article-body h3 { font-size: 19px; margin-top: 1.4em; }
.article-body p { margin: 1em 0; }
.article-body ul, .article-body ol { padding-left: 1.3em; }
.article-body blockquote {
  margin: 1.2em 0; padding: 10px 16px; border-left: 4px solid var(--accent);
  background: var(--accent-soft); border-radius: 0 10px 10px 0; color: var(--text-soft);
}
.article-body pre, .article-body code {
  background: var(--bg-soft); border: 1px solid var(--border); border-radius: 8px;
  font-family: ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace; font-size: 14px;
}
.article-body pre { padding: 14px; overflow: auto; }
.article-body :not(pre) > code { padding: 2px 6px; }

/* ---------- Pager / related ---------- */
.pager { display: flex; justify-content: space-between; gap: 12px; max-width: 760px; margin: 28px auto 0; flex-wrap: wrap; }
.pager a {
  flex: 1; min-width: 200px; padding: 14px 16px; border: 1px solid var(--border);
  border-radius: var(--radius-sm); color: var(--text-soft); font-weight: 600;
}
.pager a:hover { border-color: var(--accent); color: var(--accent); }

/* ---------- Footer ---------- */
.footer { border-top: 1px solid var(--border); background: var(--bg-soft); margin-top: 40px; }
.footer-inner { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 28px; padding: 40px 0 24px; }
.footer-col h4 { font-size: 15px; color: var(--text); margin-bottom: 12px; }
.footer-col p { color: var(--text-soft); font-size: 14px; }
.footer-links { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 8px; }
.footer-links a { color: var(--text-soft); font-size: 14px; }
.footer-links a:hover { color: var(--accent); }
.footer-bottom { border-top: 1px solid var(--border); padding: 16px 0; color: var(--text-dim); font-size: 13px; }

/* ---------- Not found ---------- */
.notfound { text-align: center; padding: 80px 0; }
.notfound a { color: var(--accent); font-weight: 600; }

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .cat-grid, .mfr-grid, .article-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-inner { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 560px) {
  .nav { display: none; }
  .cat-grid, .mfr-grid, .article-grid { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr; }
  .hero { padding: 48px 0 32px; }
}