:root {
  --bg: #0b0b14;
  --bg-card: #15151f;
  --border: #26263a;
  --text: #e8e8f0;
  --text-dim: #9a9ab0;
  --accent: #4f8cff;
  --accent2: #6c5ce7;
  --grad: linear-gradient(135deg, #4f8cff, #6c5ce7);
  --green: #2ed573;
  --radius: 12px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent); text-decoration: none; }
a:hover { opacity: 0.85; }

/* 导航 */
.nav {
  position: sticky; top: 0; z-index: 100;
  display: flex; align-items: center; gap: 24px;
  padding: 14px 32px;
  background: rgba(11, 11, 20, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.nav .logo { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 17px; color: var(--text); }
.nav .logo img { width: 28px; height: 28px; border-radius: 6px; }
.nav .links { display: flex; gap: 4px; margin-left: auto; align-items: center; }
.nav .links a {
  padding: 7px 14px; border-radius: 8px; color: var(--text-dim); font-size: 14px; transition: all .15s;
}
.nav .links a:hover { color: var(--text); background: rgba(255,255,255,0.06); }
.nav .links a.active { color: var(--text); background: rgba(79,140,255,0.15); }
.nav .lang-btn {
  margin-left: 8px; padding: 6px 12px; border: 1px solid var(--border); border-radius: 8px;
  background: transparent; color: var(--text-dim); cursor: pointer; font-size: 13px;
}
.nav .lang-btn:hover { color: var(--text); border-color: var(--accent); }

/* 容器 */
.container { max-width: 1120px; margin: 0 auto; padding: 0 24px; }

/* Hero */
.hero {
  text-align: center; padding: 96px 24px 72px;
  background: radial-gradient(ellipse at top, rgba(79,140,255,0.18), transparent 60%),
              radial-gradient(ellipse at bottom, rgba(108,92,231,0.15), transparent 60%);
}
.hero h1 {
  font-size: 52px; font-weight: 800; letter-spacing: -1px;
  background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent;
  margin-bottom: 16px;
}
.hero p { font-size: 19px; color: var(--text-dim); max-width: 640px; margin: 0 auto 28px; }
.hero .hero-icon {
  width: 64px; height: 64px; border-radius: 18px; margin: 0 auto 22px;
  background: var(--grad); display: flex; align-items: center; justify-content: center;
  font-size: 28px; color: #fff; box-shadow: 0 12px 32px -8px rgba(79,140,255,0.55);
}
.hero .badge {
  display: inline-block; padding: 6px 16px; border-radius: 20px; font-size: 13px;
  background: rgba(46,213,115,0.12); color: var(--green); border: 1px solid rgba(46,213,115,0.3);
  margin-bottom: 24px;
}
.hero .cta { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }
.btn {
  display: inline-flex; align-items: center; gap: 8px; padding: 13px 28px; border-radius: 10px;
  font-size: 15px; font-weight: 600; cursor: pointer; border: none; transition: all .15s;
}
.btn-primary { background: var(--grad); color: #fff; }
.btn-primary:hover { opacity: 0.9; transform: translateY(-1px); }
.btn-ghost { background: transparent; color: var(--text); border: 1px solid var(--border); }
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); }

/* 章节 */
.section { padding: 64px 24px; }
.section h2 { font-size: 32px; font-weight: 700; text-align: center; margin-bottom: 10px; }
.section .sub { text-align: center; color: var(--text-dim); margin-bottom: 40px; max-width: 620px; margin-left: auto; margin-right: auto; }

/* 特性卡片 */
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: 18px; }
.card {
  background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 26px; transition: all .18s;
}
.card:hover { border-color: var(--accent); transform: translateY(-3px); }
.card .icon {
  width: 46px; height: 46px; border-radius: 12px; display: flex; align-items: center; justify-content: center;
  font-size: 22px; margin-bottom: 16px; background: rgba(79,140,255,0.15); color: var(--accent);
}
.card h3 { font-size: 17px; margin-bottom: 8px; }
.card p { color: var(--text-dim); font-size: 14px; }

/* 安装代码块 */
.code-block {
  background: #0d0d18; border: 1px solid var(--border); border-radius: var(--radius);
  padding: 18px 20px; position: relative; margin: 24px 0; overflow: hidden;
}
.code-block pre {
  font-family: "SF Mono", "Fira Code", Consolas, monospace; font-size: 14px;
  color: #c9e8d9; white-space: pre-wrap; word-break: break-all; padding-right: 90px;
}
.copy-btn {
  position: absolute; top: 12px; right: 12px; padding: 7px 14px; border-radius: 8px;
  background: var(--grad); color: #fff; border: none; cursor: pointer; font-size: 13px; font-weight: 600;
}
.copy-btn:hover { opacity: 0.9; }

/* 文档侧栏 */
.docs-layout { display: flex; gap: 28px; }
.docs-sidebar {
  width: 240px; flex-shrink: 0; position: sticky; top: 80px; align-self: flex-start;
  max-height: calc(100vh - 100px); overflow-y: auto;
}
.docs-sidebar .group { margin-bottom: 18px; }
.docs-sidebar .group-title { font-size: 12px; text-transform: uppercase; color: var(--text-dim); margin-bottom: 6px; letter-spacing: .5px; }
.docs-sidebar a { display: block; padding: 7px 12px; border-radius: 8px; color: var(--text-dim); font-size: 14px; }
.docs-sidebar a:hover { color: var(--text); background: rgba(255,255,255,0.05); }
.docs-sidebar a.active { color: var(--text); background: rgba(79,140,255,0.15); }
.docs-content { flex: 1; min-width: 0; }
.docs-content .card { padding: 32px; }
.docs-content h1 { font-size: 26px; margin-bottom: 16px; }
.docs-content p { color: var(--text-dim); margin-bottom: 14px; }
.docs-content .todo {
  padding: 20px; border-radius: 10px; background: rgba(255,165,2,0.08); border: 1px dashed rgba(255,165,2,0.4);
  color: #ffd28a; text-align: center; margin-top: 20px;
}

/* 博客 */
.blog-list { display: grid; gap: 16px; }
.blog-item {
  display: block; background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 22px 26px; color: var(--text); transition: all .15s;
}
.blog-item:hover { border-color: var(--accent); transform: translateY(-2px); }
.blog-item h3 { font-size: 18px; margin-bottom: 8px; }
.blog-item .date { font-size: 12px; color: var(--text-dim); }
.blog-post { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius); padding: 40px; }
.blog-post h1 { font-size: 28px; margin-bottom: 12px; }
.blog-post .content { margin-top: 20px; color: #d8d8e4; }
.blog-post .content h3 { margin: 24px 0 10px; font-size: 19px; }
.blog-post .content p { margin-bottom: 12px; color: #b8b8cc; }
.blog-post .content ul { margin: 10px 0 10px 22px; }
.blog-post .content li { margin-bottom: 6px; color: #b8b8cc; }
.blog-post .content code { background: rgba(255,255,255,0.08); padding: 2px 6px; border-radius: 4px; font-family: monospace; }

/* 联系 */
.contact-card { text-align: center; padding: 40px; }
.contact-card .email {
  display: inline-block; margin-top: 20px; padding: 16px 32px; font-size: 20px; font-weight: 600;
  background: var(--bg-card); border: 1px solid var(--accent); border-radius: 12px; color: var(--accent);
}

/* Demo */
.demo-frame {
  border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden;
  background: var(--bg-card); min-height: 560px; margin-top: 28px;
}
.demo-steps { display: flex; gap: 12px; flex-wrap: wrap; justify-content: center; margin-top: 24px; }
.demo-steps button {
  padding: 10px 18px; border-radius: 8px; background: var(--bg-card); color: var(--text);
  border: 1px solid var(--border); cursor: pointer; font-size: 14px; transition: all .15s;
}
.demo-steps button:hover { border-color: var(--accent); }
.demo-steps button.active { background: rgba(79,140,255,0.15); border-color: var(--accent); color: var(--accent); }

/* 页脚 */
.footer {
  border-top: 1px solid var(--border); padding: 32px 24px; text-align: center;
  color: var(--text-dim); font-size: 13px; margin-top: 40px;
}
.footer a { margin: 0 8px; }

/* Markdown 文档内容 */
.markdown-body { line-height: 1.8; }
.markdown-body h1 { font-size: 26px; margin: 0 0 16px; }
.markdown-body h2 { font-size: 21px; margin: 28px 0 12px; padding-bottom: 8px; border-bottom: 1px solid var(--border); }
.markdown-body h3 { font-size: 17px; margin: 22px 0 10px; color: #e8e8f0; }
.markdown-body h4 { font-size: 15px; margin: 18px 0 8px; color: #e8e8f0; }
.markdown-body p { margin-bottom: 14px; color: var(--text-dim); }
.markdown-body ul, .markdown-body ol { padding-left: 22px; margin-bottom: 14px; color: var(--text-dim); }
.markdown-body li { margin-bottom: 6px; }
.markdown-body code { background: rgba(255,255,255,0.08); padding: 2px 6px; border-radius: 4px; font-family: monospace; font-size: 13px; color: #ffd479; }
.markdown-body pre { background: #0d0d15; border: 1px solid var(--border); border-radius: 8px; padding: 14px; overflow-x: auto; margin-bottom: 16px; }
.markdown-body pre code { background: none; padding: 0; color: #c9e8d9; }
.markdown-body table { width: 100%; border-collapse: collapse; margin: 16px 0; font-size: 14px; }
.markdown-body th, .markdown-body td { border: 1px solid var(--border); padding: 10px 12px; text-align: left; color: var(--text-dim); }
.markdown-body th { background: rgba(255,255,255,0.04); color: #e8e8f0; font-weight: 600; }
.markdown-body a { color: var(--accent, #4f8cff); text-decoration: none; }
.markdown-body a:hover { text-decoration: underline; }

/* 彩色图标变体（功能卡片用） */
.card .icon.icon-blue { background: rgba(79,140,255,0.16); color: #4f8cff; }
.card .icon.icon-green { background: rgba(46,213,115,0.16); color: #2ed573; }
.card .icon.icon-orange { background: rgba(255,165,2,0.16); color: #ffa502; }
.card .icon.icon-purple { background: rgba(108,92,231,0.18); color: #a78bfa; }
.card .icon.icon-red { background: rgba(255,99,132,0.16); color: #ff6384; }
.card .icon.icon-cyan { background: rgba(0,201,255,0.16); color: #00c9ff; }

/* 产品界面 Mockup（模拟面板截图） */
.mockup {
  border: 1px solid var(--border); border-radius: 16px; overflow: hidden;
  background: #0d0d18; max-width: 1040px; margin: 0 auto;
  box-shadow: 0 30px 70px -24px rgba(0,0,0,0.7), 0 0 0 1px rgba(79,140,255,0.07);
}
.mockup-bar {
  display: flex; align-items: center; gap: 8px; padding: 12px 16px;
  background: #15151f; border-bottom: 1px solid var(--border);
}
.mockup-bar .dot { width: 12px; height: 12px; border-radius: 50%; flex-shrink: 0; }
.mockup-bar .dot.red { background: #ff5f57; }
.mockup-bar .dot.yellow { background: #febc2e; }
.mockup-bar .dot.green { background: #28c840; }
.mockup-bar .mockup-url {
  margin-left: 12px; flex: 1; font-size: 12px; color: var(--text-dim);
  background: #0b0b14; border: 1px solid var(--border); border-radius: 6px;
  padding: 4px 12px; font-family: "SF Mono", Consolas, monospace; text-align: left;
}
.mockup-body { display: flex; min-height: 420px; }
.mockup-sidebar {
  width: 200px; flex-shrink: 0; background: #10101a;
  border-right: 1px solid var(--border); padding: 16px 12px; text-align: left;
}
.mockup-logo { font-weight: 700; font-size: 14px; margin-bottom: 18px; padding: 0 10px; color: var(--text); }
.mockup-menu div {
  padding: 9px 12px; border-radius: 8px; font-size: 13px; color: var(--text-dim); margin-bottom: 4px;
}
.mockup-menu div.active { background: rgba(79,140,255,0.16); color: var(--accent); }
.mockup-menu div .mi { margin-right: 8px; }
.mockup-main { flex: 1; padding: 20px; display: flex; flex-direction: column; gap: 16px; min-width: 0; }
.mockup-title { font-size: 15px; font-weight: 600; text-align: left; color: var(--text); }
.mockup-stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
.mockup-stat { background: var(--bg-card); border: 1px solid var(--border); border-radius: 10px; padding: 13px 14px; text-align: left; }
.mockup-stat .stat-label { font-size: 12px; color: var(--text-dim); display: block; margin-bottom: 6px; }
.mockup-stat .stat-val { font-size: 20px; font-weight: 700; color: var(--text); }
.mockup-stat .stat-bar { height: 5px; background: rgba(255,255,255,0.07); border-radius: 3px; margin-top: 8px; overflow: hidden; }
.mockup-stat .stat-bar i { display: block; height: 100%; border-radius: 3px; background: var(--grad); }
.mockup-stat .stat-bar i.warn { background: linear-gradient(90deg, #ffa502, #ff6384); }
.mockup-servers { background: var(--bg-card); border: 1px solid var(--border); border-radius: 10px; overflow: hidden; text-align: left; }
.mockup-servers .srv-head {
  padding: 10px 14px; font-size: 12px; color: var(--text-dim);
  border-bottom: 1px solid var(--border); background: rgba(255,255,255,0.02);
}
.mockup-servers .srv-row {
  display: flex; align-items: center; gap: 10px; padding: 11px 14px;
  border-bottom: 1px solid rgba(255,255,255,0.04); font-size: 13px;
}
.mockup-servers .srv-row:last-child { border-bottom: none; }
.mockup-servers .srv-dot { width: 8px; height: 8px; border-radius: 50%; flex-shrink: 0; }
.mockup-servers .srv-dot.g { background: var(--green); box-shadow: 0 0 8px var(--green); }
.mockup-servers .srv-dot.o { background: #ffa502; }
.mockup-servers .srv-name { color: var(--text); font-weight: 500; }
.mockup-servers .srv-ip { color: var(--text-dim); font-family: monospace; font-size: 12px; margin-left: auto; }
.mockup-servers .srv-tag { font-size: 11px; padding: 2px 9px; border-radius: 10px; background: rgba(46,213,115,0.13); color: var(--green); }
.mockup-servers .srv-tag.off { background: rgba(255,165,2,0.13); color: #ffa502; }

/* 响应式 */
@media (max-width: 768px) {
  .hero h1 { font-size: 36px; }
  .nav { padding: 12px 16px; gap: 12px; }
  .nav .links { gap: 0; }
  .nav .links a { padding: 6px 9px; font-size: 13px; }
  .docs-layout { flex-direction: column; }
  .docs-sidebar { width: 100%; position: static; }
  .blog-post { padding: 24px; }
  .mockup-sidebar { display: none; }
  .mockup-stats { grid-template-columns: repeat(2, 1fr); }
  .mockup-body { min-height: 360px; }
}