/* ============================================================================
   科技熊 · /guide 攻略中心样式(深空暗色主题)
   自包含:即便 deepspace.css 未加载,本文件也能独立呈现完整暗色阅读页。
   命名前缀 gd-(guide),避免与主题其它样式冲突。
   ============================================================================ */

:root {
  --gd-bg: #070b16;
  --gd-bg2: #0b1120;
  --gd-surface: rgba(255, 255, 255, 0.04);
  --gd-surface2: rgba(255, 255, 255, 0.06);
  --gd-border: rgba(255, 255, 255, 0.10);
  --gd-border2: rgba(255, 255, 255, 0.16);
  --gd-text: #EAEEF7;
  --gd-muted: #8A93A6;
  --gd-faint: #6b7a95;
  --gd-teal: #38E1FF;
  --gd-blue: #6E7BFF;
  --gd-accent: #38E1FF;
  --gd-radius: 16px;
  color-scheme: dark;
}

/* 根画布铺纯深底:防 iOS Safari 在 overscroll / 刷新时露出白色根背景 */
html { background: var(--gd-bg); }

.gd-body {
  margin: 0;
  background:
    radial-gradient(1200px 700px at 80% -10%, rgba(106, 168, 255, 0.10), transparent 60%),
    radial-gradient(900px 600px at -10% 20%, rgba(94, 222, 208, 0.08), transparent 55%),
    linear-gradient(180deg, var(--gd-bg), var(--gd-bg2));
  color: var(--gd-text);
  font-family: "Poppins", -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
}

a { color: var(--gd-teal); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ---------- 顶部阅读进度条 ---------- */
.gd-progress {
  position: fixed; top: 0; left: 0; right: 0; height: 3px;
  background: transparent; z-index: 200;
}
.gd-progress > span {
  display: block; height: 100%; width: 0;
  background: linear-gradient(90deg, var(--gd-teal), var(--gd-blue));
  box-shadow: 0 0 12px rgba(94, 222, 208, 0.6);
}

/* ---------- 导航条 ---------- */
.gd-nav {
  position: sticky; top: 0; z-index: 100;
  display: flex; align-items: center; justify-content: space-between;
  gap: 16px; padding: 12px 24px;
  background: rgba(9, 13, 24, 0.72);
  backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--gd-border);
}
.gd-brand { display: flex; align-items: center; gap: 10px; color: var(--gd-text); font-weight: 600; }
.gd-brand:hover { text-decoration: none; }
.gd-brand img { height: 26px; width: auto; display: block; }
.gd-nav-links { display: flex; align-items: center; gap: 18px; }
.gd-nav-links a:not(.gd-btn) { color: var(--gd-muted); font-size: 14px; }
.gd-nav-links a:not(.gd-btn):hover { color: var(--gd-text); text-decoration: none; }

.gd-btn {
  display: inline-block; padding: 8px 16px; border-radius: 10px;
  font-size: 14px; font-weight: 600; border: 1px solid transparent; cursor: pointer;
  transition: transform .12s ease, box-shadow .12s ease;
}
.gd-btn:hover { text-decoration: none; transform: translateY(-1px); }
.gd-btn-primary {
  color: var(--gd-text);
  font-weight: 700;
  background: linear-gradient(120deg, var(--gd-teal), var(--gd-blue));
  box-shadow: 0 6px 22px rgba(56, 225, 255, 0.26);
}
.gd-btn-ghost { color: var(--gd-text); border-color: var(--gd-border2); background: var(--gd-surface); }

/* ---------- 布局容器 ---------- */
.gd-wrap { max-width: 1120px; margin: 0 auto; padding: 32px 24px 80px; }

/* ---------- 列表页 ---------- */
.gd-hero { text-align: center; padding: 40px 0 36px; }
.gd-hero h1 {
  font-size: 40px; line-height: 1.2; margin: 0 0 12px;
  background: linear-gradient(90deg, #fff, #bcd4ff);
  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
}
.gd-hero p { color: var(--gd-muted); font-size: 17px; max-width: 640px; margin: 0 auto; }

.gd-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 20px;
}
.gd-card {
  display: block; padding: 22px; border-radius: var(--gd-radius);
  background: var(--gd-surface); border: 1px solid var(--gd-border); color: var(--gd-text);
  transition: transform .15s ease, border-color .15s ease, background .15s ease;
}
.gd-card:hover {
  text-decoration: none; transform: translateY(-3px);
  border-color: var(--gd-border2); background: var(--gd-surface2);
}
.gd-card-tag {
  display: inline-block; font-size: 12px; color: var(--gd-teal);
  border: 1px solid rgba(94, 222, 208, 0.35); border-radius: 999px; padding: 2px 10px; margin-bottom: 12px;
}
.gd-card-t { font-size: 19px; line-height: 1.4; margin: 0 0 10px; }
.gd-card-d { color: var(--gd-muted); font-size: 14px; margin: 0 0 16px; }
.gd-card-m { color: var(--gd-faint); font-size: 13px; }
.gd-empty { text-align: center; color: var(--gd-muted); padding: 80px 0; }

/* 分类筛选 chip */
.gd-filter { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; margin: 0 0 30px; }
.gd-chip {
  font: inherit; font-size: 14px; line-height: 1; cursor: pointer;
  color: var(--gd-muted); background: var(--gd-surface);
  border: 1px solid var(--gd-border); border-radius: 999px; padding: 8px 16px;
  transition: color .12s ease, border-color .12s ease, background .12s ease;
}
.gd-chip:hover { color: var(--gd-text); border-color: var(--gd-border2); }
.gd-chip-on {
  color: var(--gd-teal); background: rgba(56, 225, 255, 0.12);
  border-color: rgba(56, 225, 255, 0.45); font-weight: 600;
}

/* ---------- 文章页 ---------- */
.gd-article { }
.gd-crumb { color: var(--gd-faint); font-size: 13px; margin-bottom: 14px; }
.gd-crumb a { color: var(--gd-muted); }
.gd-crumb span { margin: 0 6px; }
.gd-title { font-size: 34px; line-height: 1.28; margin: 0 0 16px; letter-spacing: .2px; }
.gd-meta { display: flex; flex-wrap: wrap; gap: 16px; color: var(--gd-faint); font-size: 14px; margin-bottom: 8px; }
.gd-badge { color: var(--gd-teal); }

.gd-layout {
  display: grid; grid-template-columns: 240px minmax(0, 1fr); gap: 44px;
  align-items: start; margin-top: 28px;
}

/* 侧栏目录 */
.gd-toc { position: sticky; top: 84px; align-self: start; }
.gd-toc-head { font-size: 13px; letter-spacing: 2px; color: var(--gd-faint); text-transform: uppercase; margin-bottom: 12px; }
.gd-toc-list, .gd-toc-sub { list-style: none; margin: 0; padding: 0; }
.gd-toc-list a {
  display: block; color: var(--gd-muted); font-size: 13.5px; line-height: 1.5;
  padding: 6px 0 6px 12px; border-left: 2px solid var(--gd-border);
  transition: color .12s ease, border-color .12s ease;
}
.gd-toc-list a:hover { color: var(--gd-text); text-decoration: none; border-left-color: var(--gd-border2); }
.gd-toc-i3 a { padding-left: 26px; font-size: 13px; color: var(--gd-faint); }
.gd-toc-list a.gd-active { color: var(--gd-teal); border-left-color: var(--gd-teal); }

/* 正文排版 */
.gd-prose { font-size: 16.5px; color: #d5ddec; min-width: 0; }
.gd-prose > p:first-child { font-size: 17.5px; color: #e6ecf7; }
.gd-prose h2 {
  font-size: 24px; line-height: 1.35; margin: 40px 0 16px; padding-left: 14px;
  border-left: 4px solid; border-image: linear-gradient(180deg, var(--gd-teal), var(--gd-blue)) 1;
  scroll-margin-top: 84px;
}
.gd-prose h3 { font-size: 19px; margin: 28px 0 12px; color: #eaf0fb; scroll-margin-top: 84px; }
.gd-prose p { margin: 0 0 18px; }
.gd-prose ul, .gd-prose ol { margin: 0 0 18px; padding-left: 24px; }
.gd-prose li { margin: 8px 0; }
.gd-prose li::marker { color: var(--gd-teal); }
.gd-prose strong { color: #fff; }
.gd-prose a { border-bottom: 1px solid rgba(94, 222, 208, 0.4); }
.gd-prose a:hover { text-decoration: none; border-bottom-color: var(--gd-teal); }

/* 行内代码 & 代码块 */
.gd-prose code {
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  font-size: 90%; background: rgba(94, 222, 208, 0.12); color: #9df0e6;
  padding: 2px 7px; border-radius: 6px;
}
.gd-prose pre {
  background: #0a1120; border: 1px solid var(--gd-border); border-radius: 12px;
  padding: 16px 18px; overflow-x: auto; margin: 0 0 20px;
}
.gd-prose pre code { background: none; color: #cdd9ee; padding: 0; font-size: 13.5px; }

/* 引用 = callout */
.gd-prose blockquote {
  margin: 0 0 22px; padding: 14px 18px;
  background: linear-gradient(90deg, rgba(94, 222, 208, 0.10), rgba(106, 168, 255, 0.05));
  border: 1px solid var(--gd-border); border-left: 3px solid var(--gd-teal);
  border-radius: 12px; color: #e2eaf6;
}
.gd-prose blockquote p { margin: 6px 0; }

/* 表格 */
.gd-prose table {
  width: 100%; border-collapse: collapse; margin: 0 0 22px; font-size: 15px;
  border: 1px solid var(--gd-border); border-radius: 12px; overflow: hidden;
}
.gd-prose th, .gd-prose td { padding: 11px 14px; border-bottom: 1px solid var(--gd-border); text-align: left; }
.gd-prose thead th { background: var(--gd-surface2); color: #fff; font-weight: 600; }
.gd-prose tbody tr:last-child td { border-bottom: none; }
.gd-prose tbody tr:hover { background: rgba(255, 255, 255, 0.02); }

/* 转化 CTA */
.gd-cta {
  margin: 44px 0 8px; padding: 26px; border-radius: var(--gd-radius);
  background: linear-gradient(135deg, rgba(94, 222, 208, 0.12), rgba(106, 168, 255, 0.10));
  border: 1px solid rgba(94, 222, 208, 0.30);
}
.gd-cta-t { font-size: 20px; font-weight: 700; color: #fff; margin-bottom: 6px; }
.gd-cta p { color: var(--gd-muted); margin: 0 0 18px; }
.gd-cta-btns { display: flex; flex-wrap: wrap; gap: 12px; }

/* 上/下篇 */
.gd-pn { display: flex; gap: 16px; margin-top: 48px; }
.gd-pn-i {
  flex: 1; padding: 16px 18px; border-radius: 12px;
  background: var(--gd-surface); border: 1px solid var(--gd-border); color: var(--gd-text);
}
.gd-pn-i:hover { text-decoration: none; border-color: var(--gd-border2); }
.gd-pn-i span { display: block; color: var(--gd-faint); font-size: 12px; margin-bottom: 4px; }
.gd-pn-i b { font-weight: 600; font-size: 15px; }
.gd-pn-next { text-align: right; }

/* ---------- 页脚 ---------- */
.gd-foot { border-top: 1px solid var(--gd-border); margin-top: 48px; }
.gd-foot-in {
  max-width: 1120px; margin: 0 auto; padding: 26px 24px;
  display: flex; flex-wrap: wrap; gap: 12px 24px; align-items: center; justify-content: space-between;
  color: var(--gd-faint); font-size: 14px;
}
.gd-foot-links { display: flex; gap: 20px; }
.gd-foot-links a { color: var(--gd-muted); }
.gd-foot-links a:hover { color: var(--gd-text); text-decoration: none; }

/* ---------- 响应式 ---------- */
@media (max-width: 960px) {
  .gd-layout { grid-template-columns: 1fr; gap: 20px; }
  .gd-toc {
    position: static; order: -1; padding: 14px 16px;
    background: var(--gd-surface); border: 1px solid var(--gd-border); border-radius: 12px;
  }
  .gd-hero h1 { font-size: 30px; }
  .gd-title { font-size: 27px; }
  .gd-wrap { padding: 20px 16px 60px; }
  .gd-pn { flex-direction: column; }
}