/* CCHarness 官网样式 v4 —— 多页面 + 明暗主题（参考 VitePress 文档站风格） */
/* Deployed via GitHub Actions from ./site */

:root {
  --bg: #0b0e14;
  --bg2: #11151d;
  --card: #151a23;
  --border: #232a36;
  --border-strong: #2e3746;
  --text: #e8ecf3;
  --dim: #9aa4b2;
  --faint: #66707e;
  --accent: #4a9eff;
  --accent-soft: rgba(74, 158, 255, 0.10);
  --accent-line: rgba(74, 158, 255, 0.4);
  --accent2: #8b7cf7;
  --good: #3fb68b;
  --warn: #e0a63f;
  --bad: #e05f65;
  --nav-bg: rgba(11, 14, 20, 0.78);
  --shadow: 0 12px 40px rgba(0, 0, 0, 0.35);
  --mono: ui-monospace, "SF Mono", "Cascadia Code", Consolas, "Courier New", monospace;
  --r: 14px;
}

html[data-theme="light"] {
  --bg: #ffffff;
  --bg2: #f6f8fa;
  --card: #ffffff;
  --border: #e4e8ee;
  --border-strong: #d3dae3;
  --text: #213547;
  --dim: #5b6472;
  --faint: #8a93a2;
  --accent: #2e7fe8;
  --accent-soft: rgba(46, 127, 232, 0.08);
  --accent-line: rgba(46, 127, 232, 0.35);
  --accent2: #7a5ef0;
  --good: #199f70;
  --warn: #b07d1e;
  --bad: #d0454c;
  --nav-bg: rgba(255, 255, 255, 0.82);
  --shadow: 0 12px 40px rgba(30, 45, 70, 0.10);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: system-ui, -apple-system, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  line-height: 1.68;
  -webkit-font-smoothing: antialiased;
  transition: background 0.25s ease, color 0.25s ease;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
code { font-family: var(--mono); font-size: 0.9em; background: var(--bg2); border: 1px solid var(--border); border-radius: 5px; padding: 1px 6px; }
::selection { background: var(--accent-line); }
.wrap { max-width: 1152px; margin: 0 auto; padding: 0 24px; }

/* ================= 主题切换按钮 ================= */
.theme-toggle {
  display: inline-flex; align-items: center; justify-content: center;
  width: 34px; height: 34px; border-radius: 9px;
  border: 1px solid var(--border); background: var(--bg2);
  color: var(--dim); cursor: pointer; transition: color 0.15s, border-color 0.15s;
}
.theme-toggle:hover { color: var(--text); border-color: var(--accent-line); }
.theme-toggle svg { width: 17px; height: 17px; }
html[data-theme="dark"] .icon-sun { display: none; }
html[data-theme="light"] .icon-moon { display: none; }

/* ================= 顶部导航 ================= */
.navbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  background: var(--nav-bg);
  backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
  transition: background 0.25s ease;
}
.nav-inner { max-width: 1152px; margin: 0 auto; padding: 0 24px; height: 60px; display: flex; align-items: center; gap: 24px; }
.brand { display: flex; align-items: center; gap: 9px; color: var(--text); text-decoration: none; font-weight: 700; font-size: 16px; }
.brand:hover { text-decoration: none; }
.brand img { border-radius: 6px; }
.nav-links { display: flex; gap: 20px; margin-left: auto; }
.nav-links a { color: var(--dim); text-decoration: none; font-size: 14px; padding: 4px 2px; border-bottom: 2px solid transparent; transition: color 0.15s; white-space: nowrap; }
.nav-links a:hover { color: var(--text); }
.nav-links a.on { color: var(--accent); }
.nav-actions { display: flex; align-items: center; gap: 10px; }
.nav-burger { display: none; flex-direction: column; justify-content: center; gap: 4.5px; width: 34px; height: 34px; border-radius: 9px; border: 1px solid var(--border); background: var(--bg2); cursor: pointer; padding: 0 8px; }
.nav-burger span { display: block; height: 1.6px; background: var(--dim); border-radius: 2px; transition: transform 0.2s, opacity 0.2s; }
body.nav-open .nav-burger span:nth-child(1) { transform: translateY(6.1px) rotate(45deg); }
body.nav-open .nav-burger span:nth-child(2) { opacity: 0; }
body.nav-open .nav-burger span:nth-child(3) { transform: translateY(-6.1px) rotate(-45deg); }

/* ================= 按钮 ================= */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 9px 18px; border-radius: 10px;
  font-size: 14px; font-weight: 600; text-decoration: none;
  border: 1px solid transparent; cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease, border-color 0.15s ease;
}
.btn:hover { text-decoration: none; }
.btn svg { width: 16px; height: 16px; flex: none; }
.btn-primary { background: linear-gradient(135deg, var(--accent), #3d7fe0); color: #fff; box-shadow: 0 4px 16px rgba(74, 158, 255, 0.25); }
html[data-theme="light"] .btn-primary { background: var(--accent); box-shadow: 0 4px 14px rgba(46, 127, 232, 0.22); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(74, 158, 255, 0.35); }
.btn-ghost { background: var(--card); color: var(--text); border-color: var(--border-strong); }
.btn-ghost:hover { border-color: var(--accent); transform: translateY(-2px); }
.btn-lg { padding: 13px 26px; font-size: 15.5px; border-radius: 12px; }
.btn-sm { padding: 6px 14px; font-size: 13px; border-radius: 9px; }

/* ================= 文本部件 ================= */
.eyebrow {
  font-size: 12px; font-weight: 700; letter-spacing: 2.2px;
  text-transform: uppercase; color: var(--accent); margin-bottom: 14px;
}
.pill { font-size: 12px; padding: 3px 11px; border-radius: 999px; border: 1px solid var(--border-strong); color: var(--dim); background: var(--bg2); white-space: nowrap; }
.pill-accent { color: var(--accent); border-color: var(--accent-line); background: var(--accent-soft); }

/* ================= 首页 Hero ================= */
.hero-home { padding: 136px 0 72px; position: relative; overflow: hidden; }
.hero-home::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background:
    radial-gradient(640px 340px at 16% -2%, var(--accent-soft), transparent 70%),
    radial-gradient(560px 320px at 88% 10%, rgba(139, 124, 247, 0.10), transparent 70%);
}
html[data-theme="light"] .hero-home::before {
  background:
    radial-gradient(640px 340px at 16% -2%, rgba(46, 127, 232, 0.07), transparent 70%),
    radial-gradient(560px 320px at 88% 10%, rgba(122, 94, 240, 0.06), transparent 70%);
}
.hero-grid { max-width: 1152px; margin: 0 auto; padding: 0 24px; display: grid; grid-template-columns: 1.04fr 0.96fr; gap: 48px; align-items: center; position: relative; }
.hero-copy h1 { font-size: 46px; line-height: 1.16; letter-spacing: -0.6px; font-weight: 800; margin: 16px 0 18px; }
.grad {
  background: linear-gradient(120deg, var(--accent), var(--accent2));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero-sub { font-size: 17px; color: var(--dim); max-width: 34em; }
.hero-cta { display: flex; gap: 14px; margin-top: 28px; flex-wrap: wrap; }
.hero-note { margin-top: 16px; font-size: 13px; color: var(--faint); }
.hero-tagline { margin-top: 14px; font-size: 12.5px; color: var(--faint); letter-spacing: 0.4px; }

/* 特性胶囊条 */
.chips { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; padding: 8px 24px 0; }
.chips .pill { font-size: 12.5px; padding: 5px 14px; }

/* ================= 应用窗口模拟 ================= */
.appwin {
  background: var(--card); border: 1px solid var(--border-strong); border-radius: 16px;
  overflow: hidden; box-shadow: var(--shadow); font-size: 12.5px;
}
.appwin-bar { display: flex; align-items: center; gap: 7px; padding: 10px 14px; border-bottom: 1px solid var(--border); background: var(--bg2); }
.dot { width: 10px; height: 10px; border-radius: 50%; }
.d-r { background: #ff5f57; } .d-y { background: #febc2e; } .d-g { background: #28c840; }
.appwin-title { margin-left: 8px; color: var(--faint); font-size: 11.5px; }
.appwin-body { display: grid; grid-template-columns: 108px 1fr 138px; min-height: 316px; }
.appwin-side { border-right: 1px solid var(--border); padding: 10px 8px; display: flex; flex-direction: column; gap: 3px; background: var(--bg2); }
.side-item { display: flex; align-items: center; gap: 7px; padding: 5px 9px; border-radius: 7px; color: var(--dim); }
.side-item i { width: 6px; height: 6px; border-radius: 2px; background: var(--faint); flex: none; }
.side-item.active { background: var(--accent-soft); color: var(--accent); }
.side-item.active i { background: var(--accent); }
.side-foot { margin-top: auto; font-size: 10.5px; color: var(--faint); padding: 6px 9px 2px; }
.appwin-chat { padding: 14px; display: flex; flex-direction: column; gap: 10px; }
.bubble { padding: 8px 12px; border-radius: 10px; line-height: 1.5; max-width: 92%; }
.bubble.user { background: var(--accent-soft); border: 1px solid var(--accent-line); align-self: flex-end; }
.bubble.ai { background: var(--bg2); border: 1px solid var(--border); align-self: flex-start; }
.ai-name { display: block; font-size: 10.5px; color: var(--accent); margin-bottom: 2px; font-weight: 600; }
.caret { display: inline-block; width: 7px; height: 13px; background: var(--accent); vertical-align: -2px; margin-left: 2px; animation: blink 1.1s steps(1) infinite; }
@keyframes blink { 50% { opacity: 0; } }
.toolcard { display: flex; align-items: center; gap: 8px; align-self: flex-start; border: 1px dashed var(--border-strong); border-radius: 8px; padding: 6px 10px; font-family: var(--mono); font-size: 11px; color: var(--dim); }
.tool-tag { color: var(--accent2); font-weight: 600; }
.tool-stat.ok { color: var(--good); } .tool-stat.bad { color: var(--bad); }
.composer { margin-top: auto; display: flex; align-items: center; gap: 7px; border: 1px solid var(--border-strong); border-radius: 9px; padding: 7px 10px; color: var(--faint); }
.c-pill { font-size: 10.5px; border: 1px solid var(--border-strong); border-radius: 6px; padding: 1px 7px; color: var(--dim); background: var(--bg2); }
.c-pill.c-model { color: var(--accent); border-color: var(--accent-line); }
.appwin-panel { border-left: 1px solid var(--border); padding: 12px; background: var(--bg2); }
.panel-title { font-size: 10.5px; color: var(--faint); text-transform: uppercase; letter-spacing: 1px; margin-bottom: 8px; }
.panel-kpi { font-size: 26px; font-weight: 800; color: var(--good); line-height: 1.1; }
.panel-kpi-label { font-size: 10.5px; color: var(--dim); margin-bottom: 10px; }
.bars { display: flex; align-items: flex-end; gap: 3px; height: 44px; margin-bottom: 10px; }
.bars i { flex: 1; height: var(--h); background: linear-gradient(180deg, var(--accent), rgba(74, 158, 255, 0.35)); border-radius: 2px 2px 0 0; min-width: 4px; }
.panel-row { display: flex; justify-content: space-between; font-size: 11px; padding: 3px 0; color: var(--dim); }
.panel-row b.ok { color: var(--good); } .panel-row b.warn { color: var(--warn); }

/* ================= 区块通用 ================= */
.section { padding: 84px 0; }
.section-alt { background: var(--bg2); }
.sec-head { max-width: 720px; margin: 0 auto 48px; text-align: center; }
.sec-head h2 { font-size: 33px; letter-spacing: -0.4px; line-height: 1.25; font-weight: 800; }
.sec-sub { color: var(--dim); margin-top: 12px; font-size: 16px; }

/* 编号步骤 */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.step { background: var(--card); border: 1px solid var(--border); border-radius: var(--r); padding: 24px 22px; transition: transform 0.2s ease, border-color 0.2s ease; }
.step:hover { transform: translateY(-3px); border-color: var(--accent-line); }
.step .num { font-family: var(--mono); font-size: 13px; color: var(--accent); font-weight: 700; }
.step .lab { font-size: 11px; letter-spacing: 2px; text-transform: uppercase; color: var(--faint); margin: 6px 0 10px; }
.step h3 { font-size: 16.5px; margin-bottom: 8px; }
.step p { font-size: 13.8px; color: var(--dim); }

/* Bento 卡片 */
.bento { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
.b-card { background: var(--card); border: 1px solid var(--border); border-radius: 16px; padding: 24px; transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease; overflow: hidden; }
.b-card:hover { transform: translateY(-3px); border-color: var(--accent-line); box-shadow: var(--shadow); }
.b-card .b-tag { font-size: 10.5px; letter-spacing: 1.8px; text-transform: uppercase; color: var(--accent); font-weight: 700; margin-bottom: 12px; display: block; }
.b-card h3 { font-size: 17px; margin-bottom: 8px; }
.b-card > p { font-size: 13.8px; color: var(--dim); }
.b-wide { grid-column: span 2; }
.b-mini {
  margin-top: 18px; background: var(--bg2); border: 1px solid var(--border);
  border-radius: 10px; padding: 14px; font-family: var(--mono); font-size: 12px; color: var(--dim);
}
/* mini: 文件树 */
.tree-row { display: flex; align-items: center; gap: 8px; padding: 3.5px 8px; border-radius: 6px; }
.tree-row.grant { background: var(--accent-soft); color: var(--accent); border: 1px solid var(--accent-line); }
.tree-row i { width: 7px; height: 7px; border-radius: 2px; background: var(--faint); flex: none; }
.tree-row.grant i { background: var(--accent); }
/* mini: diff */
.diff-row { font-family: var(--mono); font-size: 11.5px; padding: 2px 8px; border-radius: 4px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.diff-row.add { color: var(--good); background: rgba(63, 182, 139, 0.10); }
.diff-row.del { color: var(--bad); background: rgba(224, 95, 101, 0.10); }
.diff-row.ctx { color: var(--faint); }
/* mini: 目标清单 */
.goal-row { display: flex; gap: 8px; align-items: center; padding: 3px 0; }
.goal-row .gk { width: 15px; height: 15px; border-radius: 4px; border: 1px solid var(--border-strong); display: inline-flex; align-items: center; justify-content: center; font-size: 10px; flex: none; }
.goal-row.done .gk { background: var(--good); border-color: var(--good); color: #fff; }
.goal-row.done { color: var(--text); }
/* mini: 遥测 */
.kpi-line { display: flex; align-items: baseline; gap: 8px; margin-bottom: 8px; }
.kpi-line b { font-size: 22px; color: var(--good); }
.kpi-line span { font-size: 11px; color: var(--faint); }
/* mini: 多模型 */
.model-chips { display: flex; flex-wrap: wrap; gap: 8px; }
.model-chips span { border: 1px solid var(--border-strong); border-radius: 999px; padding: 3px 12px; font-size: 11px; color: var(--dim); background: var(--card); }
.model-chips span.hot { color: var(--accent); border-color: var(--accent-line); background: var(--accent-soft); }

/* 三列编号行（知识沉淀 / 控制权） */
.kv-list { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.kv { border-top: 2px solid var(--border-strong); padding-top: 18px; }
.kv .num { font-family: var(--mono); font-size: 13px; color: var(--accent); font-weight: 700; }
.kv h3 { font-size: 16.5px; margin: 10px 0 8px; }
.kv p { font-size: 13.8px; color: var(--dim); }

/* 缓存三区图 */
.zone { background: var(--card); border: 1px solid var(--border); border-radius: 14px; padding: 22px; font-family: var(--mono); font-size: 12.5px; }
.zone-row { display: flex; align-items: center; gap: 14px; border-radius: 9px; padding: 13px 16px; margin-bottom: 10px; border: 1px solid var(--border); }
.zone-row span { font-weight: 700; font-size: 13px; flex: none; }
.zone-row em { font-style: normal; color: var(--dim); font-size: 11.5px; }
.zone-row.zs { background: rgba(63, 182, 139, 0.08); border-color: rgba(63, 182, 139, 0.35); }
.zone-row.zs span { color: var(--good); }
.zone-row.zh { background: var(--accent-soft); border-color: var(--accent-line); }
.zone-row.zh span { color: var(--accent); }
.zone-row.zt { background: rgba(224, 166, 63, 0.08); border-color: rgba(224, 166, 63, 0.4); }
.zone-row.zt span { color: var(--warn); }
.zone-arrow { text-align: center; color: var(--faint); font-size: 11.5px; margin-top: 6px; }

/* 平台标签行 */
.platforms { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; margin-top: 22px; }
.platforms span { font-family: var(--mono); font-size: 12px; color: var(--dim); border: 1px solid var(--border-strong); background: var(--card); border-radius: 8px; padding: 5px 13px; }

/* 最终 CTA */
.final-cta { text-align: center; padding: 96px 0; position: relative; overflow: hidden; }
.final-cta::before { content: ""; position: absolute; inset: 0; background: radial-gradient(560px 280px at 50% 110%, var(--accent-soft), transparent 70%); pointer-events: none; }
.final-cta h2 { font-size: 34px; font-weight: 800; letter-spacing: -0.4px; }
.final-cta .sec-sub { max-width: 560px; margin-left: auto; margin-right: auto; }
.final-cta .hero-cta { justify-content: center; }

/* ================= Footer ================= */
.footer { border-top: 1px solid var(--border); background: var(--bg2); padding: 52px 0 30px; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 32px; }
.footer-brand img { border-radius: 6px; vertical-align: -5px; margin-right: 8px; }
.footer-brand b { font-size: 16px; }
.footer-brand p { font-size: 13px; color: var(--dim); margin-top: 10px; max-width: 30em; }
.footer-col h4 { font-size: 12.5px; text-transform: uppercase; letter-spacing: 1.4px; color: var(--faint); margin-bottom: 14px; }
.footer-col a { display: block; color: var(--dim); font-size: 13.8px; padding: 3.5px 0; }
.footer-col a:hover { color: var(--accent); text-decoration: none; }
.footer-bottom { max-width: 1152px; margin: 36px auto 0; padding: 18px 24px 0; border-top: 1px solid var(--border); display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; font-size: 12.5px; color: var(--faint); }

/* ================= 文档页布局 ================= */
.docs { max-width: 1300px; margin: 0 auto; padding: 84px 24px 40px; display: grid; grid-template-columns: 236px minmax(0, 1fr) 190px; gap: 40px; }
.sidebar { position: sticky; top: 84px; align-self: start; max-height: calc(100vh - 100px); overflow-y: auto; padding-bottom: 20px; }
.side-group { margin-bottom: 26px; }
.side-label { font-size: 11px; text-transform: uppercase; letter-spacing: 1.6px; color: var(--faint); font-weight: 700; margin-bottom: 8px; }
.side-link { display: block; color: var(--dim); font-size: 13.8px; padding: 5.5px 12px; border-radius: 8px; border-left: 2px solid transparent; }
.side-link:hover { color: var(--text); text-decoration: none; background: var(--bg2); }
.side-link.active { color: var(--accent); font-weight: 600; background: var(--accent-soft); border-left-color: var(--accent); border-top-left-radius: 0; border-bottom-left-radius: 0; }

.doc { max-width: 760px; padding-bottom: 30px; }
.doc .crumb { font-size: 12.5px; color: var(--faint); margin-bottom: 14px; }
.doc h1 { font-size: 34px; line-height: 1.22; letter-spacing: -0.4px; font-weight: 800; margin-bottom: 8px; }
.doc .lead { font-size: 16.5px; color: var(--dim); margin: 10px 0 8px; }
.doc h2 { font-size: 24px; font-weight: 700; margin: 44px 0 14px; padding-top: 24px; border-top: 1px solid var(--border); scroll-margin-top: 84px; }
.doc h2:first-of-type { border-top: none; padding-top: 8px; }
.doc h3 { font-size: 18px; font-weight: 700; margin: 28px 0 10px; scroll-margin-top: 84px; }
.doc p { margin: 12px 0; }
.doc ul, .doc ol { margin: 12px 0 12px 1.4em; }
.doc li { margin: 6px 0; }
.doc li::marker { color: var(--accent); }
.doc b { color: var(--text); }
.doc table { width: 100%; border-collapse: collapse; margin: 16px 0; font-size: 14px; }
.doc th, .doc td { border: 1px solid var(--border); padding: 9px 13px; text-align: left; vertical-align: top; }
.doc th { background: var(--bg2); font-weight: 600; white-space: nowrap; }
.doc td { color: var(--dim); }
.doc td:first-child { color: var(--text); font-weight: 500; white-space: nowrap; }
.doc pre {
  background: var(--bg2); border: 1px solid var(--border); border-radius: 12px;
  padding: 16px 18px; overflow-x: auto; margin: 16px 0; font-size: 13.2px; line-height: 1.6;
}
.doc pre code { background: none; border: none; padding: 0; font-size: inherit; }
.callout { border: 1px solid var(--border-strong); border-left: 3px solid var(--accent); background: var(--accent-soft); border-radius: 10px; padding: 13px 16px; margin: 16px 0; font-size: 14px; }
.callout.warn { border-left-color: var(--warn); background: rgba(224, 166, 63, 0.08); }
.callout b { display: block; margin-bottom: 4px; }
.kbd { font-family: var(--mono); font-size: 0.85em; border: 1px solid var(--border-strong); border-bottom-width: 2px; border-radius: 5px; padding: 0 6px; background: var(--bg2); }

/* 右侧目录 */
.toc { position: sticky; top: 84px; align-self: start; font-size: 13px; }
.toc .toc-title { font-size: 11px; text-transform: uppercase; letter-spacing: 1.6px; color: var(--faint); font-weight: 700; margin-bottom: 10px; }
.toc a { display: block; color: var(--dim); padding: 3.5px 0 3.5px 12px; border-left: 2px solid var(--border); }
.toc a:hover { color: var(--text); text-decoration: none; }
.toc a.on { color: var(--accent); border-left-color: var(--accent); }

/* 上下页 Pager */
.pager { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-top: 52px; }
.pager a { border: 1px solid var(--border); border-radius: 12px; padding: 14px 18px; color: var(--dim); font-size: 13px; transition: border-color 0.15s, transform 0.15s; }
.pager a:hover { border-color: var(--accent-line); transform: translateY(-2px); text-decoration: none; }
.pager a b { display: block; color: var(--text); font-size: 14.5px; margin-top: 3px; }
.pager a.next { text-align: right; }
.pager a.plain { grid-column: span 2; text-align: center; }
.pager a span { color: var(--faint); font-size: 11.5px; text-transform: uppercase; letter-spacing: 1.2px; }

/* ================= 滚动显现 ================= */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity 0.6s ease, transform 0.6s cubic-bezier(0.22, 1, 0.36, 1); }
.reveal.in { opacity: 1; transform: none; }

/* ================= 响应式 ================= */
@media (max-width: 1100px) {
  .toc { display: none; }
  .docs { grid-template-columns: 236px minmax(0, 1fr); }
}
@media (max-width: 920px) {
  .hero-grid { grid-template-columns: 1fr; gap: 36px; }
  .hero-copy h1 { font-size: 36px; }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .bento { grid-template-columns: 1fr; }
  .b-wide { grid-column: span 1; }
  .kv-list { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .docs { grid-template-columns: 1fr; gap: 20px; }
  .sidebar { position: static; max-height: none; display: flex; gap: 18px; overflow-x: auto; padding-bottom: 8px; }
  .side-group { margin-bottom: 0; flex: none; min-width: 170px; }
  /* 移动端导航 */
  .nav-links {
    display: none; position: absolute; top: 60px; left: 0; right: 0;
    flex-direction: column; gap: 0; background: var(--bg);
    border-bottom: 1px solid var(--border); padding: 10px 24px 16px;
  }
  body.nav-open .nav-links { display: flex; }
  .nav-links a { padding: 11px 4px; border-bottom: 1px solid var(--border); font-size: 15px; }
  .nav-links a:last-child { border-bottom: none; }
  .nav-burger { display: flex; }
  .nav-cta { display: none; }
}
@media (max-width: 560px) {
  .steps { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .hero-copy h1 { font-size: 30px; }
  .pager { grid-template-columns: 1fr; }
  .pager a.next { text-align: left; }
  .pager a.plain { grid-column: span 1; }
  .appwin-body { grid-template-columns: 96px 1fr; }
  .appwin-panel { display: none; }
}