/*
Theme Name: CodeTheme
Theme URI: https://example.com/code-theme
Author: CodeTheme
Author URI: https://example.com
Description: 专为程序员、技术博主、开发者打造的轻量化 WordPress 编程技术博客主题。原生支持代码高亮、行号、一键复制、文章目录、暗黑模式、源码下载、SEO 优化，并内置可开关的 AI 创作/阅读/运营增强能力（兼容 OpenAI 接口）。
Version: 1.0.0
Requires at least: 5.8
Tested up to: 6.5
Requires PHP: 7.4
License: GNU General Public License v2 or later
License URI: http://www.gnu.org/licenses/gpl-2.0.html
Text Domain: code-theme
Tags: blog, code, technology, dark-mode, custom-colors, translation-ready, featured-images, threaded-comments, two-columns, right-sidebar
*/

/* =========================================================
   CodeTheme — 主样式
   设计变量统一由 :root 控制，后台「自定义配色」会覆盖这些变量
   ========================================================= */

:root {
  --ct-primary: #06b6d4;
  --ct-primary-hover: #0891b2;
  --ct-accent: #3b82f6;        /* 渐变副色 */
  --ct-accent2: #22d3ee;       /* 高光色 */
  --ct-grad: linear-gradient(135deg, #06b6d4 0%, #3b82f6 100%);
  --ct-grad-soft: linear-gradient(135deg, rgba(6,182,212,.12), rgba(59,130,246,.12));
  --ct-bg: #ffffff;
  --ct-bg-soft: #f3f6f9;
  --ct-card: #ffffff;
  --ct-border: #e3e9f0;
  --ct-text: #0f172a;
  --ct-text-soft: #5b6677;
  --ct-code-bg: #f3f6f9;
  --ct-code-text: #0f172a;
  --ct-radius: 16px;
  --ct-radius-lg: 22px;
  --ct-shadow: 0 1px 2px rgba(15,23,42,.05), 0 10px 30px rgba(15,23,42,.06);
  --ct-shadow-lg: 0 20px 50px rgba(15,23,42,.12);
  --ct-glow: 0 0 0 1px rgba(6,182,212,.25), 0 8px 30px rgba(6,182,212,.18);
  --ct-mono: "JetBrains Mono", "Fira Code", "Cascadia Code", ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
  --ct-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", Roboto, Helvetica, Arial, sans-serif;
  --ct-content-width: 780px;
  --ct-page-width: 1240px;
}

html[data-theme="dark"] {
  --ct-primary: #22d3ee;
  --ct-primary-hover: #67e8f9;
  --ct-accent: #38bdf8;
  --ct-accent2: #22d3ee;
  --ct-grad: linear-gradient(135deg, #22d3ee 0%, #3b82f6 100%);
  --ct-grad-soft: linear-gradient(135deg, rgba(34,211,238,.14), rgba(59,130,246,.14));
  --ct-bg: #060b16;
  --ct-bg-soft: #0d1626;
  --ct-card: #0e1828;
  --ct-border: #1e2d45;
  --ct-text: #e8eef7;
  --ct-text-soft: #93a1b8;
  --ct-code-bg: #0b1322;
  --ct-code-text: #e8eef7;
  --ct-shadow: 0 1px 2px rgba(0,0,0,.6), 0 12px 36px rgba(0,0,0,.5);
  --ct-shadow-lg: 0 24px 60px rgba(0,0,0,.6);
  --ct-glow: 0 0 0 1px rgba(34,211,238,.3), 0 8px 40px rgba(34,211,238,.22);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--ct-sans);
  background: var(--ct-bg);
  color: var(--ct-text);
  line-height: 1.75;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  transition: background .25s ease, color .25s ease;
  position: relative;
}

/* 干净柔和的氛围背景：顶部一抹品牌光，不铺满网格 */
body::before {
  content: "";
  position: fixed;
  inset: 0 0 auto 0;
  height: 620px;
  z-index: -2;
  background:
    radial-gradient(1000px 460px at 78% -12%, color-mix(in srgb, var(--ct-accent) 14%, transparent), transparent 70%),
    radial-gradient(900px 420px at 18% -16%, color-mix(in srgb, var(--ct-primary) 14%, transparent), transparent 70%);
  pointer-events: none;
}
html[data-theme="dark"] body::before {
  background:
    radial-gradient(1000px 460px at 78% -12%, rgba(56,189,248,.16), transparent 70%),
    radial-gradient(900px 420px at 18% -16%, rgba(34,211,238,.14), transparent 70%);
}

a { color: var(--ct-primary); text-decoration: none; }
a:hover { color: var(--ct-primary-hover); text-decoration: underline; }

img { max-width: 100%; height: auto; }

.ct-container {
  max-width: var(--ct-page-width);
  margin: 0 auto;
  padding: 0 20px;
}

.screen-reader-text {
  position: absolute !important;
  clip: rect(1px,1px,1px,1px);
  width: 1px; height: 1px; overflow: hidden;
}

/* ---------- 头部 / 导航 ---------- */
.ct-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in srgb, var(--ct-bg) 78%, transparent);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color .25s, box-shadow .25s;
}
.ct-header.is-stuck { border-bottom-color: var(--ct-border); box-shadow: 0 6px 24px rgba(15,23,42,.06); }
.ct-header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
}
.ct-logo {
  font-family: var(--ct-mono);
  font-weight: 700;
  font-size: 20px;
  color: var(--ct-text);
  display: flex;
  align-items: center;
  gap: 8px;
}
.ct-logo .ct-logo-bracket { color: var(--ct-primary); }
.ct-logo:hover { text-decoration: none; }

.ct-nav { display: flex; align-items: center; gap: 6px; }
.ct-nav ul { display: flex; gap: 4px; list-style: none; margin: 0; padding: 0; }
.ct-nav a {
  display: block;
  padding: 8px 14px;
  border-radius: 8px;
  color: var(--ct-text-soft);
  font-weight: 500;
}
.ct-nav a:hover, .ct-nav .current-menu-item > a {
  background: var(--ct-bg-soft);
  color: var(--ct-text);
  text-decoration: none;
}

.ct-header-tools { display: flex; align-items: center; gap: 8px; }
.ct-icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px; height: 38px;
  border-radius: 8px;
  border: 1px solid var(--ct-border);
  background: var(--ct-card);
  color: var(--ct-text);
  cursor: pointer;
  transition: background .2s;
}
.ct-icon-btn:hover { background: var(--ct-bg-soft); }
.ct-icon-btn svg { width: 18px; height: 18px; }

.ct-menu-toggle { display: none; }

/* ---------- 横幅 ---------- */
.ct-hero {
  position: relative;
  padding: 96px 0 84px;
  text-align: center;
  overflow: hidden;
}
.ct-hero { padding: 84px 0 64px; }
.ct-hero::before {
  content: "";
  position: absolute;
  left: 50%; top: -55%;
  width: 720px; height: 720px;
  transform: translateX(-50%);
  background: radial-gradient(circle, color-mix(in srgb, var(--ct-primary) 18%, transparent), transparent 62%);
  filter: blur(10px);
  pointer-events: none;
}
html[data-theme="dark"] .ct-hero::before { background: radial-gradient(circle, rgba(34,211,238,.22), transparent 62%); }
.ct-hero-inner { position: relative; z-index: 1; }
.ct-hero-eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--ct-mono); font-size: 13px; font-weight: 600;
  padding: 6px 16px; border-radius: 999px; margin-bottom: 22px;
  color: var(--ct-primary);
  background: var(--ct-grad-soft);
  border: 1px solid color-mix(in srgb, var(--ct-primary) 30%, transparent);
}
.ct-hero-eyebrow .ct-dot {
  width: 8px; height: 8px; border-radius: 50%; background: var(--ct-primary);
  box-shadow: 0 0 0 0 color-mix(in srgb, var(--ct-primary) 60%, transparent);
  animation: ct-pulse 2s infinite;
}
@keyframes ct-pulse {
  0% { box-shadow: 0 0 0 0 color-mix(in srgb, var(--ct-primary) 55%, transparent); }
  70% { box-shadow: 0 0 0 10px transparent; }
  100% { box-shadow: 0 0 0 0 transparent; }
}
.ct-hero h1 {
  font-size: clamp(34px, 5.2vw, 60px);
  line-height: 1.1;
  margin: 0 0 18px;
  font-family: var(--ct-mono);
  font-weight: 800;
  letter-spacing: -.02em;
}
.ct-hero h1 .ct-grad-text {
  background: var(--ct-grad);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent; color: transparent;
}
.ct-hero p { color: var(--ct-text-soft); max-width: 680px; margin: 0 auto; font-size: clamp(16px,2vw,20px); }
.ct-hero-actions { margin-top: 34px; display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }
.ct-hero-stats {
  margin-top: 52px; display: flex; gap: 14px; justify-content: center; flex-wrap: wrap;
}
.ct-stat {
  min-width: 150px; padding: 18px 26px; border-radius: var(--ct-radius);
  background: color-mix(in srgb, var(--ct-card) 70%, transparent);
  border: 1px solid var(--ct-border);
  backdrop-filter: blur(8px);
}
.ct-stat .num {
  font-family: var(--ct-mono); font-size: 30px; font-weight: 800;
  background: var(--ct-grad); -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
}
.ct-stat .label { font-size: 13px; color: var(--ct-text-soft); margin-top: 2px; }

/* 渐变主按钮 / 次按钮 */
.ct-btn-primary {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 13px 28px; border-radius: 12px; font-weight: 700; color: #fff !important;
  background: var(--ct-grad); border: 0; cursor: pointer;
  box-shadow: var(--ct-glow); transition: transform .15s ease, box-shadow .2s ease;
}
.ct-btn-primary:hover { transform: translateY(-2px); text-decoration: none; box-shadow: 0 12px 36px rgba(6,182,212,.4); }
.ct-btn-ghost {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 13px 26px; border-radius: 12px; font-weight: 600;
  color: var(--ct-text); background: var(--ct-card);
  border: 1px solid var(--ct-border); transition: border-color .2s, transform .15s;
}
.ct-btn-ghost:hover { border-color: var(--ct-primary); transform: translateY(-2px); text-decoration: none; }

/* ---------- 布局 ---------- */
.ct-main {
  display: grid;
  grid-template-columns: minmax(0,1fr) 320px;
  gap: 48px;
  padding: 56px 0;
}
.ct-main.ct-no-sidebar { grid-template-columns: minmax(0,1fr); }

/* ---------- 区块标题 ---------- */
.ct-section { margin: 0 0 56px; }
.ct-section-head {
  display: flex; align-items: flex-end; justify-content: space-between;
  margin-bottom: 26px; gap: 16px; flex-wrap: wrap;
}
.ct-section-head h2 {
  font-size: clamp(22px,2.6vw,30px); margin: 0; font-weight: 800; letter-spacing: -.01em;
  display: flex; align-items: center; gap: 12px;
}
.ct-section-head h2::before {
  content: ""; width: 6px; height: 28px; border-radius: 6px; background: var(--ct-grad);
}
.ct-section-head .ct-more { font-family: var(--ct-mono); font-size: 14px; font-weight: 600; }
.ct-section-sub { color: var(--ct-text-soft); margin: -16px 0 26px; font-size: 15px; }

/* ---------- 文章卡片 ---------- */
.ct-card {
  position: relative;
  background: var(--ct-card);
  border: 1px solid var(--ct-border);
  border-radius: var(--ct-radius);
  overflow: hidden;
  transition: transform .2s ease, box-shadow .25s ease, border-color .25s ease;
}
.ct-card:hover { transform: translateY(-4px); box-shadow: var(--ct-shadow-lg); border-color: color-mix(in srgb, var(--ct-primary) 45%, var(--ct-border)); }
/* 顶部渐变描边高光 */
.ct-post-card::after {
  content: ""; position: absolute; left: 0; right: 0; top: 0; height: 3px;
  background: var(--ct-grad); opacity: 0; transition: opacity .25s ease;
}
.ct-post-card:hover::after { opacity: 1; }

.ct-post-list { display: grid; gap: 24px; }
.ct-post-list.ct-layout-cards { grid-template-columns: repeat(auto-fill, minmax(320px,1fr)); }

.ct-post-card-body { padding: 24px 26px; }
.ct-post-card .ct-thumb { display:block; aspect-ratio: 16/8; overflow:hidden; background: var(--ct-bg-soft); }
.ct-post-card .ct-thumb img { width:100%; height:100%; object-fit: cover; transition: transform .4s ease; }
.ct-post-card:hover .ct-thumb img { transform: scale(1.05); }
.ct-post-card h2 { font-size: 21px; margin: 0 0 10px; line-height: 1.4; font-weight: 700; }
.ct-post-card h2 a { color: var(--ct-text); }
.ct-post-card h2 a:hover { color: var(--ct-primary); text-decoration: none; }
.ct-post-meta { font-size: 13px; color: var(--ct-text-soft); display:flex; flex-wrap:wrap; gap: 12px; align-items:center; }
.ct-post-excerpt { color: var(--ct-text-soft); margin: 14px 0 0; }

/* ---------- 分类导航卡片 ---------- */
.ct-cat-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px,1fr)); gap: 20px; }
.ct-cat-card {
  position: relative; display: block; padding: 26px 24px;
  border-radius: var(--ct-radius); border: 1px solid var(--ct-border);
  background: var(--ct-card); overflow: hidden;
  transition: transform .2s ease, box-shadow .25s ease, border-color .25s;
}
.ct-cat-card::before {
  content: ""; position: absolute; inset: 0; background: var(--ct-grad-soft); opacity: 0; transition: opacity .25s;
}
.ct-cat-card:hover { transform: translateY(-4px); box-shadow: var(--ct-shadow-lg); border-color: color-mix(in srgb, var(--ct-primary) 45%, var(--ct-border)); text-decoration: none; }
.ct-cat-card:hover::before { opacity: 1; }
.ct-cat-card .ct-cat-icon {
  position: relative; z-index: 1; width: 50px; height: 50px; border-radius: 14px;
  display: flex; align-items: center; justify-content: center; font-size: 24px;
  background: var(--ct-grad-soft); border: 1px solid color-mix(in srgb, var(--ct-primary) 30%, transparent);
  margin-bottom: 16px;
}
.ct-cat-card .ct-cat-name { position: relative; z-index: 1; font-weight: 700; font-size: 17px; color: var(--ct-text); }
.ct-cat-card .ct-cat-count { position: relative; z-index: 1; font-size: 13px; color: var(--ct-text-soft); margin-top: 4px; font-family: var(--ct-mono); }

.ct-badge {
  display:inline-block;
  font-size: 12px;
  padding: 3px 12px;
  border-radius: 999px;
  background: var(--ct-grad-soft);
  border: 1px solid color-mix(in srgb, var(--ct-primary) 28%, transparent);
  color: var(--ct-primary);
  font-weight: 600;
}
.ct-badge.ct-level-1 { background: color-mix(in srgb, #16a34a 16%, transparent); color:#16a34a; }
.ct-badge.ct-level-2 { background: color-mix(in srgb, #d97706 16%, transparent); color:#d97706; }
.ct-badge.ct-level-3 { background: color-mix(in srgb, #dc2626 16%, transparent); color:#dc2626; }

/* ---------- 精选推荐（一大两小） ---------- */
.ct-featured-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr;
  grid-template-rows: 1fr 1fr;
  gap: 22px;
  min-height: 440px;
}
.ct-feat-main { grid-row: 1 / span 2; }
.ct-feat-card {
  position: relative;
  border-radius: var(--ct-radius-lg);
  overflow: hidden;
  border: 1px solid var(--ct-border);
  box-shadow: var(--ct-shadow);
  transition: transform .25s ease, box-shadow .3s ease;
  min-height: 200px;
}
.ct-feat-card:hover { transform: translateY(-4px); box-shadow: var(--ct-shadow-lg); }
.ct-feat-link { display: block; height: 100%; }
.ct-feat-link:hover { text-decoration: none; }
.ct-feat-bg {
  position: absolute; inset: 0;
  background-size: cover; background-position: center;
  background-color: var(--ct-bg-soft);
  background-image: var(--ct-grad);
  transition: transform .5s ease;
}
.ct-feat-card:hover .ct-feat-bg { transform: scale(1.06); }
.ct-feat-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(6,10,22,.05) 0%, rgba(6,10,22,.55) 55%, rgba(6,10,22,.88) 100%);
}
.ct-feat-content {
  position: absolute; left: 0; right: 0; bottom: 0;
  padding: 22px 24px; z-index: 1; color: #fff;
}
.ct-feat-main .ct-feat-content { padding: 30px 32px; }
.ct-feat-cat {
  display: inline-block; font-size: 12px; font-weight: 700; letter-spacing: .03em;
  padding: 4px 12px; border-radius: 999px; margin-bottom: 12px;
  background: rgba(255,255,255,.16); backdrop-filter: blur(6px); color: #fff;
  border: 1px solid rgba(255,255,255,.25);
}
.ct-feat-content h3 { margin: 0 0 8px; line-height: 1.3; color: #fff; font-weight: 800; }
.ct-feat-side .ct-feat-content h3 { font-size: 18px; }
.ct-feat-main .ct-feat-content h3 { font-size: clamp(22px, 2.6vw, 30px); }
.ct-feat-content p { margin: 0 0 12px; color: rgba(255,255,255,.85); font-size: 15px; }
.ct-feat-meta { font-size: 12px; color: rgba(255,255,255,.8); font-family: var(--ct-mono); }

/* ---------- 侧边栏：热门排行 ---------- */
.ct-rank-list { list-style: none; margin: 0; padding: 0; counter-reset: rank; }
.ct-rank-list li {
  display: flex; align-items: flex-start; gap: 12px;
  padding: 10px 0; border-bottom: 1px dashed var(--ct-border);
}
.ct-rank-list li:last-child { border-bottom: 0; }
.ct-rank-num {
  flex: none; width: 24px; height: 24px; border-radius: 7px;
  display: flex; align-items: center; justify-content: center;
  font-family: var(--ct-mono); font-size: 13px; font-weight: 700;
  background: var(--ct-bg-soft); color: var(--ct-text-soft);
}
.ct-rank-num.ct-rank-top { background: var(--ct-grad); color: #fff; }
.ct-rank-list a { color: var(--ct-text); font-size: 14.5px; line-height: 1.45; }
.ct-rank-list a:hover { color: var(--ct-primary); }

/* 分类列表（侧栏） */
.ct-cat-list { list-style: none; margin: 0; padding: 0; }
.ct-cat-list li { padding: 8px 0; border-bottom: 1px dashed var(--ct-border); }
.ct-cat-list li:last-child { border-bottom: 0; }
.ct-cat-list a { color: var(--ct-text); }
.ct-cat-list a:hover { color: var(--ct-primary); }

/* CTA 小工具 */
.ct-widget-cta {
  background: var(--ct-grad-soft) !important;
  border-color: color-mix(in srgb, var(--ct-primary) 28%, var(--ct-border)) !important;
  text-align: center;
}
.ct-widget-cta h3 { justify-content: center; }
.ct-widget-cta h3::before { display: none; }
.ct-widget-cta p { color: var(--ct-text-soft); font-size: 14px; margin: 0 0 14px; }

/* ---------- 文章正文 ---------- */
.ct-article { background: var(--ct-card); border:1px solid var(--ct-border); border-radius: var(--ct-radius-lg); padding: 48px 52px; box-shadow: var(--ct-shadow); }
.ct-article-header { margin-bottom: 28px; padding-bottom: 24px; border-bottom: 1px solid var(--ct-border); }
.ct-article-header h1 { font-size: clamp(28px,3.6vw,44px); line-height:1.2; margin:0 0 18px; font-weight: 800; letter-spacing: -.02em; }
.ct-entry-content { font-size: 17px; }
.ct-entry-content > * { max-width: var(--ct-content-width); }
.ct-entry-content h2, .ct-entry-content h3, .ct-entry-content h4 { scroll-margin-top: 80px; line-height:1.3; }
.ct-entry-content h2 { font-size: 26px; margin: 2em 0 .7em; padding-bottom:.3em; border-bottom:1px solid var(--ct-border); }
.ct-entry-content h3 { font-size: 21px; margin: 1.6em 0 .6em; }
.ct-entry-content p { margin: 1em 0; }
.ct-entry-content blockquote {
  margin: 1.4em 0; padding: 4px 18px; border-left: 4px solid var(--ct-primary);
  background: var(--ct-bg-soft); border-radius: 0 8px 8px 0; color: var(--ct-text-soft);
}
.ct-entry-content :not(pre) > code {
  font-family: var(--ct-mono); font-size: .9em;
  background: var(--ct-bg-soft); padding: .15em .4em; border-radius: 6px;
  border: 1px solid var(--ct-border);
}
.ct-entry-content table { width:100%; border-collapse: collapse; margin: 1.4em 0; }
.ct-entry-content th, .ct-entry-content td { border:1px solid var(--ct-border); padding: 8px 12px; text-align:left; }
.ct-entry-content th { background: var(--ct-bg-soft); }
.ct-entry-content img { border-radius: 8px; }

/* ---------- 代码块 ---------- */
.ct-entry-content pre[class*="language-"],
.ct-codeblock {
  position: relative;
  margin: 1.6em 0;
  border: 1px solid var(--ct-border);
  border-radius: 10px;
  background: var(--ct-code-bg) !important;
  box-shadow: var(--ct-shadow);
  overflow: hidden;
}
.ct-code-toolbar-bar {
  display:flex; align-items:center; justify-content: space-between;
  padding: 9px 14px;
  background: color-mix(in srgb, var(--ct-code-bg) 60%, var(--ct-border));
  border-bottom: 1px solid var(--ct-border);
  font-family: var(--ct-mono); font-size: 12px; color: var(--ct-text-soft);
}
/* 终端红黄绿圆点 */
.ct-code-lang { text-transform: uppercase; letter-spacing: .06em; display: inline-flex; align-items: center; gap: 10px; font-weight: 600; }
.ct-code-lang::before {
  content: ""; width: 12px; height: 12px; border-radius: 50%;
  background: #ff5f56;
  box-shadow: 18px 0 0 #ffbd2e, 36px 0 0 #27c93f;
  margin-right: 28px;
}
.ct-code-actions { display:flex; gap: 6px; }
.ct-code-btn {
  background: transparent; border: 1px solid var(--ct-border); color: var(--ct-text-soft);
  font-size: 12px; padding: 2px 8px; border-radius: 6px; cursor: pointer;
}
.ct-code-btn:hover { color: var(--ct-text); border-color: var(--ct-primary); }
pre[class*="language-"] { margin: 0 !important; }
.ct-code-collapsed pre { max-height: 320px; overflow: hidden; }
.ct-code-fade { position:absolute; left:0; right:0; bottom:0; height:60px;
  background: linear-gradient(transparent, var(--ct-code-bg)); pointer-events:none; }

/* ---------- 目录 ---------- */
.ct-toc {
  position: sticky; top: 84px;
  background: var(--ct-card); border:1px solid var(--ct-border);
  border-radius: var(--ct-radius); padding: 16px 18px;
  max-height: calc(100vh - 110px); overflow:auto;
}
.ct-toc h4 { margin:0 0 10px; font-size: 14px; text-transform: uppercase; letter-spacing:.05em; color: var(--ct-text-soft); }
.ct-toc ul { list-style:none; margin:0; padding:0; font-size: 14px; }
.ct-toc li { margin: 2px 0; }
.ct-toc a { display:block; padding: 4px 8px; border-radius:6px; color: var(--ct-text-soft); border-left:2px solid transparent; }
.ct-toc a:hover { background: var(--ct-bg-soft); text-decoration:none; }
.ct-toc a.ct-toc-h3 { padding-left: 20px; font-size: 13px; }
.ct-toc a.is-active { color: var(--ct-primary); border-left-color: var(--ct-primary); background: var(--ct-bg-soft); }

/* ---------- 侧边栏 ---------- */
.ct-sidebar .ct-widget {
  background: var(--ct-card); border:1px solid var(--ct-border);
  border-radius: var(--ct-radius); padding: 22px 24px; margin-bottom: 24px;
  transition: border-color .25s, box-shadow .25s;
}
.ct-sidebar .ct-widget:hover { box-shadow: var(--ct-shadow); }
.ct-widget .widget-title, .ct-widget h2, .ct-widget h3 {
  margin:0 0 16px; font-size: 16px; font-weight: 700;
  display: flex; align-items: center; gap: 10px;
}
.ct-widget .widget-title::before, .ct-widget h3::before {
  content: ""; width: 4px; height: 16px; border-radius: 4px; background: var(--ct-grad);
}
.ct-widget ul { list-style:none; margin:0; padding:0; }
.ct-widget li { padding: 6px 0; border-bottom: 1px dashed var(--ct-border); }
.ct-widget li:last-child { border-bottom: 0; }
.ct-tagcloud a { display:inline-block; margin:5px 5px 0 0; padding:5px 13px; font-size:13px !important;
  background: var(--ct-bg-soft); border:1px solid var(--ct-border); border-radius: 999px; color: var(--ct-text-soft);
  transition: all .2s; }
.ct-tagcloud a:hover { color:#fff; background: var(--ct-grad); border-color: transparent; text-decoration: none; transform: translateY(-1px); }

/* ---------- 文章底部 ---------- */
.ct-article-footer { margin-top: 32px; }
.ct-changelog { border:1px solid var(--ct-border); border-radius: var(--ct-radius); padding: 14px 18px; background: var(--ct-bg-soft); }
.ct-changelog h4 { margin:0 0 8px; font-size:15px; }
.ct-reactions { display:flex; gap: 12px; margin: 24px 0; }
.ct-reaction-btn {
  display:inline-flex; align-items:center; gap:6px; cursor:pointer;
  border:1px solid var(--ct-border); background: var(--ct-card); color: var(--ct-text);
  padding: 8px 16px; border-radius: 999px; font-size: 14px;
}
.ct-reaction-btn { transition: transform .15s, border-color .2s; }
.ct-reaction-btn.is-active { border-color: transparent; color: #fff; background: var(--ct-grad); }
.ct-reaction-btn:hover { transform: translateY(-1px); }
.ct-reaction-btn:hover { background: var(--ct-bg-soft); }

/* ---------- 源码下载 ---------- */
.ct-download {
  display:flex; align-items:center; gap: 14px;
  border: 1px solid var(--ct-border); border-radius: var(--ct-radius);
  padding: 14px 18px; margin: 1.6em 0; background: var(--ct-bg-soft);
}
.ct-download .ct-dl-icon { font-size: 28px; }
.ct-download .ct-dl-info { flex:1; }
.ct-download .ct-dl-name { font-weight:600; }
.ct-download .ct-dl-meta { font-size: 13px; color: var(--ct-text-soft); }
.ct-download {
  background: var(--ct-grad-soft);
  border-color: color-mix(in srgb, var(--ct-primary) 25%, var(--ct-border));
}
.ct-download .ct-dl-btn {
  background: var(--ct-grad); color:#fff; padding: 10px 20px; border-radius: 10px; font-weight:700; white-space:nowrap;
  box-shadow: var(--ct-glow);
}
.ct-download .ct-dl-btn:hover { transform: translateY(-1px); text-decoration:none; }

/* ---------- 面包屑 ---------- */
.ct-breadcrumb { font-size: 13px; color: var(--ct-text-soft); padding: 16px 0; }
.ct-breadcrumb a { color: var(--ct-text-soft); }
.ct-breadcrumb .sep { margin: 0 8px; opacity:.5; }

/* ---------- 分页 ---------- */
.ct-pagination { display:flex; gap:8px; justify-content:center; margin: 32px 0; flex-wrap:wrap; }
.ct-pagination .page-numbers {
  display:inline-flex; align-items:center; justify-content:center; min-width:40px; height:40px; padding:0 12px;
  border:1px solid var(--ct-border); border-radius:8px; color: var(--ct-text); background: var(--ct-card);
}
.ct-pagination .page-numbers.current { background: var(--ct-grad); color:#fff; border-color: transparent; box-shadow: var(--ct-glow); }
.ct-pagination .page-numbers:hover:not(.current) { background: var(--ct-bg-soft); text-decoration:none; }

/* ---------- 评论 ---------- */
.ct-comments { margin-top: 40px; }
.ct-comments .comment-list { list-style:none; margin:0; padding:0; }
.ct-comments .comment-body { background: var(--ct-card); border:1px solid var(--ct-border); border-radius: var(--ct-radius); padding: 16px 18px; margin-bottom:14px; }
.ct-comments .children { list-style:none; margin: 0 0 0 28px; padding:0; }
.ct-comments .comment-author { font-weight:600; }
.ct-comments .comment-meta { font-size:12px; color: var(--ct-text-soft); margin-bottom:8px; }
.ct-comments textarea, .ct-comments input[type=text], .ct-comments input[type=email], .ct-comments input[type=url] {
  width:100%; padding:10px 12px; border:1px solid var(--ct-border); border-radius:8px; background: var(--ct-bg); color: var(--ct-text); font-family: inherit;
}
.ct-comments .form-submit input, .ct-btn {
  background: var(--ct-grad); color:#fff; border:0; padding:11px 24px; border-radius:10px; font-weight:700; cursor:pointer;
  box-shadow: var(--ct-glow); transition: transform .15s;
}
.ct-btn:hover { transform: translateY(-1px); }

/* ---------- footer ---------- */
.ct-footer {
  position: relative;
  border-top:1px solid var(--ct-border);
  background: var(--ct-bg-soft);
  padding: 56px 0 32px; margin-top: 64px; color: var(--ct-text-soft); font-size:14px;
  overflow: hidden;
}
.ct-footer::before {
  content: ""; position: absolute; left: 0; right: 0; top: 0; height: 2px; background: var(--ct-grad); opacity: .7;
}
.ct-footer::after {
  content: ""; position: absolute; left: 50%; bottom: -180px; width: 600px; height: 320px; transform: translateX(-50%);
  background: radial-gradient(circle, rgba(6,182,212,.16), transparent 65%); pointer-events: none;
}
.ct-footer-grid { display:grid; grid-template-columns: repeat(auto-fit,minmax(180px,1fr)); gap: 36px; position: relative; z-index: 1; }
.ct-footer h4 { color: var(--ct-text); font-size: 15px; }
.ct-footer a { color: var(--ct-text-soft); }
.ct-footer a:hover { color: var(--ct-primary); }
.ct-footer-bottom { text-align:center; margin-top:36px; padding-top:24px; border-top:1px solid var(--ct-border); font-size:13px; position: relative; z-index: 1; }

/* ---------- 404 ---------- */
.ct-404 { text-align:center; padding: 80px 0; }
.ct-404 .code { font-family: var(--ct-mono); font-size: clamp(60px,12vw,140px); color: var(--ct-primary); margin:0; }

/* ---------- 响应式 ---------- */
@media (max-width: 980px) {
  .ct-main { grid-template-columns: 1fr; }
  .ct-toc { display:none; }
  .ct-featured-grid { grid-template-columns: 1fr 1fr; grid-template-rows: auto; min-height: 0; }
  .ct-feat-main { grid-row: auto; grid-column: 1 / -1; }
  .ct-feat-main .ct-feat-bg { min-height: 260px; }
}
@media (max-width: 720px) {
  .ct-nav { position: fixed; inset: 70px 0 auto 0; background: var(--ct-bg); border-bottom:1px solid var(--ct-border);
    flex-direction: column; padding: 12px 20px; display:none; }
  .ct-nav.is-open { display:flex; }
  .ct-nav ul { flex-direction: column; width:100%; }
  .ct-menu-toggle { display:inline-flex; }
  .ct-article { padding: 24px; }
  .ct-hero { padding: 60px 0 48px; }
  .ct-hero-stats { gap: 10px; }
  .ct-stat { min-width: 100px; padding: 14px 16px; }
  .ct-stat .num { font-size: 24px; }
  .ct-featured-grid { grid-template-columns: 1fr; }
  .ct-feat-side .ct-feat-bg { min-height: 200px; }
}