/* ===== 全站共享样式 =====
 * 风格依据：Nutlope/hallmark（反 AI 味设计规范）——
 * 不用标题色词、不用全大写字距标签、focus 可见、尊重 reduced-motion、手机可用 */
:root {
  --ink: #16202b;
  --muted: #55636f;
  --line: #e4e8ec;
  --bg: #f7f7f4;          /* 暖纸色底，不用冷灰 */
  --card: #ffffff;
  --accent: #1f5eff;
  --accent-dark: #1645b8;
  --good: #1a7f37;
  --warn: #b45309;
  --danger: #c0392b;
  --soft: #eef0f2;          /* 中性软底 */
  --accent-soft: #e8f0fe;   /* 强调软底 */
  --good-soft: #e5f3e8;
  --warn-soft: #fdf3e7;
  --danger-soft: #fdeeee;
  --radius: 10px;
  --maxw: 1020px;
  color-scheme: light;
}
* { box-sizing: border-box; }
:root[data-theme="dark"] {
  --ink: #e7edf3;
  --muted: #97a5b3;
  --line: #263140;
  --bg: #0e141b;
  --card: #151d27;
  --accent: #5b9dff;
  --accent-dark: #82b4ff;
  --good: #3ec66d;
  --warn: #f0a24b;
  --danger: #ff7a70;
  --soft: #1c2531;
  --accent-soft: #17293f;
  --good-soft: #12271b;
  --warn-soft: #2a2113;
  --danger-soft: #2b1518;
  color-scheme: dark;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --ink: #e7edf3;
    --muted: #97a5b3;
    --line: #263140;
    --bg: #0e141b;
    --card: #151d27;
    --accent: #5b9dff;
    --accent-dark: #82b4ff;
    --good: #3ec66d;
    --warn: #f0a24b;
    --danger: #ff7a70;
    --soft: #1c2531;
    --accent-soft: #17293f;
    --good-soft: #12271b;
    --warn-soft: #2a2113;
    --danger-soft: #2b1518;
    color-scheme: dark;
  }
}
body {
  margin: 0;
  font-family: Charter, Georgia, "Times New Roman", -apple-system, "Segoe UI", Roboto, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.6;
}
h1, h2, h3, button, .stat-num, .dz-title { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif; }
a { color: var(--accent); }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
}

/* 头部 */
.site-header {
  background: color-mix(in srgb, var(--bg) 92%, transparent);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  z-index: 10;
}
.site-header .inner {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 12px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 9px;
  font-weight: 700;
  font-size: 17px;
  color: var(--ink);
  text-decoration: none;
  letter-spacing: -0.01em;
}
.brand img { width: 26px; height: 26px; }
.site-nav { display: flex; gap: 20px; font-size: 14px; align-items: center; }
.site-nav a { color: var(--muted); text-decoration: none; }
.site-nav a:hover { color: var(--ink); }

/* 页脚 */
.site-footer {
  border-top: 1px solid var(--line);
  background: var(--card);
  margin-top: 48px;
  font-size: 13px;
  color: var(--muted);
}
.site-footer .inner { max-width: var(--maxw); margin: 0 auto; padding: 24px 20px; }
.site-footer p { margin: 4px 0; }

.container { max-width: var(--maxw); margin: 0 auto; padding: 0 20px; }
.ad-slot { margin: 16px auto; text-align: center; min-height: 0; }
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px;
  margin: 18px 0;
}
.card h2 { margin: 0 0 12px; font-size: 18px; }
.muted { color: var(--muted); }
.tiny { font-size: 12.5px; }
.hidden { display: none !important; }

/* 首页 hero：标题纯墨色（hallmark：不用色词） */
.hero { padding: 56px 0 8px; }
.hero-grid { display: grid; grid-template-columns: 1.4fr 1fr; gap: 40px; align-items: center; }
.hero h1 { font-size: 34px; margin: 0 0 12px; letter-spacing: -0.02em; line-height: 1.18; }
.hero p.sub { font-size: 17px; color: var(--muted); max-width: 620px; margin: 0; }
.hero-stats { display: flex; gap: 22px; margin-top: 22px; font-size: 14px; color: var(--muted); }
.hero-stats b { display: block; font-size: 20px; color: var(--ink); font-family: -apple-system, "Segoe UI", Roboto, sans-serif; }
.quick-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 18px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, .18);
}
.quick-card h2 { font-size: 12.5px; color: var(--muted); font-weight: 600; margin: 0 0 10px; font-family: -apple-system, "Segoe UI", Roboto, sans-serif; }
.quick-card a {
  display: flex; align-items: center; gap: 10px;
  padding: 9px 10px; margin: 2px 0;
  border-radius: 9px;
  text-decoration: none; color: var(--ink); font-size: 14.5px; font-weight: 600;
}
.quick-card a:hover { background: var(--soft); }
.quick-card .qc-icon {
  width: 34px; height: 34px; flex: 0 0 34px;
  display: flex; align-items: center; justify-content: center;
  font-size: 17px; border-radius: 8px;
  background: color-mix(in srgb, var(--cat, var(--accent)) 14%, white);
}
.quick-card .qc-sub { display: block; font-size: 12px; color: var(--muted); font-weight: 400; }
@media (max-width: 900px) { .hero-grid { grid-template-columns: 1fr; gap: 24px; } .hero-stats { gap: 14px; } }

/* 工具目录：句首大写的小节说明，不用大写字距 */
.dir-label {
  margin: 34px 0 12px;
  font-size: 14px;
  font-weight: 600;
  color: var(--ink);
  display: flex;
  align-items: center;
  gap: 8px;
}
.dir-label::before {
  content: "";
  width: 9px; height: 9px;
  border-radius: 3px;
  background: var(--cat, var(--accent));
}
.cat-shipping { --cat: #0ea5e9; }
.cat-pricing { --cat: #16a34a; }
.cat-listing { --cat: #f59e0b; }
.cat-doc { --cat: #8b5cf6; }
.cat-visual { --cat: #ec4899; }
.cat-soon { --cat: #94a3b8; }
.dir-label:first-of-type { margin-top: 30px; }
.tool-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 14px;
  margin-bottom: 28px;
}
.tool-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.tool-card:hover { border-color: #c9d2da; }
.tool-card h3 { margin: 0; font-size: 16px; }
.tool-card .tc-head { display: flex; align-items: center; gap: 10px; }
.tool-card .tc-icon {
  width: 38px; height: 38px; flex: 0 0 38px;
  display: flex; align-items: center; justify-content: center;
  font-size: 19px;
  background: color-mix(in srgb, var(--cat, var(--accent)) 12%, white);
  border-radius: 9px;
}
.tool-card h3 a {
  color: var(--ink);
  text-decoration: none;
}
.tool-card h3 a::after {
  content: "\2192";
  display: inline-block;
  margin-left: 6px;
  opacity: 0;
  transform: translateX(-4px);
  transition: opacity .12s, transform .12s;
  color: var(--cat, var(--accent));
}
.tool-card:hover h3 a::after { opacity: 1; transform: translateX(0); }
.tool-card:hover { border-color: color-mix(in srgb, var(--cat, var(--accent)) 45%, var(--line)); }
.tool-card p { margin: 0; color: var(--muted); font-size: 14px; flex: 1; }
.tool-card .badge {
  display: inline-block;
  width: fit-content;
  font-size: 12px;
  font-weight: 600;
  border-radius: 5px;
  padding: 1px 8px;
}
.badge.live { color: #fff; background: var(--ink); }
.badge.planned { background: var(--soft); color: var(--muted); }
.btn {
  display: inline-block;
  background: var(--ink);
  color: #fff !important;
  border: none;
  border-radius: 8px;
  padding: 10px 18px;
  font-size: 15px;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  text-align: center;
}
.btn:hover { background: color-mix(in srgb, var(--ink) 85%, #fff); }
.btn.ghost {
  background: transparent;
  color: var(--accent) !important;
  border: 1px solid var(--accent);
}
.btn.small { padding: 6px 12px; font-size: 13px; }

@media (max-width: 640px) {
  .hero h1 { font-size: 26px; }
  .site-nav { display: none; }
}

/* ===== 主题切换按钮 ===== */
.theme-btn {
  background: var(--soft);
  border: 1px solid var(--line);
  border-radius: 8px;
  width: 34px; height: 34px;
  font-size: 16px;
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  color: var(--ink);
}
.theme-btn:hover { border-color: var(--accent); }

/* ===== 头部搜索 ===== */
.nav-search { position: relative; }
.nav-search input {
  width: 210px;
  padding: 8px 12px 8px 32px;
  border: 1px solid var(--line);
  border-radius: 8px;
  font-size: 13.5px;
  font-family: inherit;
  background: var(--card);
  color: var(--ink);
}
.nav-search::before {
  content: "🔍";
  position: absolute; left: 10px; top: 50%;
  transform: translateY(-50%);
  font-size: 12px; opacity: .6;
}
.nav-search-results {
  position: absolute; top: 40px; right: 0;
  min-width: 280px; max-height: 320px; overflow: auto;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 10px;
  box-shadow: 0 12px 32px rgba(0,0,0,.25);
  z-index: 60;
  display: none;
}
.nav-search-results.open { display: block; }
.nav-search-results a {
  display: flex; flex-direction: column; gap: 2px;
  padding: 9px 14px;
  text-decoration: none;
  color: var(--ink); font-size: 13.5px; font-weight: 600;
}
.nav-search-results a span { color: var(--muted); font-weight: 400; font-size: 12px; }
.nav-search-results a:hover, .nav-search-results a.sel { background: var(--accent-soft); }

/* ===== 相关工具 ===== */
.related { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 10px; }
.related a {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 9px;
  text-decoration: none;
  color: var(--ink);
  font-size: 13.5px; font-weight: 600;
  background: var(--card);
}
.related a:hover { border-color: var(--accent); }
.related .tc-icon { width: 30px; height: 30px; flex: 0 0 30px; font-size: 15px; border-radius: 7px; }

/* ===== 使用指南区块 ===== */
.guide h3 { font-size: 15px; margin: 18px 0 8px; }
.guide ol, .guide ul { padding-left: 20px; font-size: 14.5px; }
.guide li { margin: 6px 0; }
.guide p { font-size: 14.5px; margin: 8px 0; }
.guide details { border-bottom: 1px solid var(--line); padding: 9px 0; }
.guide details:last-child { border-bottom: none; }
.guide summary { cursor: pointer; font-weight: 600; font-size: 14.5px; }
.guide details p, .guide details div { font-size: 14px; color: var(--muted); margin: 8px 0 2px; }