/* ════════════════════════════════════════════════════════════
   公交能行业经理小助手 · V3 — AI 控制台风
   浅色科技底 · 科技蓝主色 · 青色 AI 状态色 · JetBrains Mono 数据标签
   ════════════════════════════════════════════════════════════ */

:root {
  --bg: #f6f8fb;
  --surface: #ffffff;
  --ink: #0f172a;
  --ink-2: #334155;
  --muted: #475569;
  --faint: #64748b;
  --line: #e2e8f0;
  --line-soft: #eef2f7;
  --blue: #1d4ed8;
  --blue-deep: #1e40af;
  --blue-soft: #eff4ff;
  --blue-line: #c7d7fe;
  --cyan: #06b6d4;
  --cyan-deep: #0e7490;
  --cyan-soft: #ecfeff;
  --amber: #b45309;
  --amber-soft: #fffbeb;
  --amber-line: #fde68a;
  --red: #b91c1c;
  --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.05);
  --shadow-md: 0 1px 3px rgba(15, 23, 42, 0.06), 0 10px 28px -8px rgba(15, 23, 42, 0.1);
  --shadow-lg: 0 2px 6px rgba(15, 23, 42, 0.06), 0 24px 56px -16px rgba(30, 64, 175, 0.16);
  --r-sm: 8px;
  --r-md: 12px;
  --r-lg: 16px;
  --sans: "Noto Sans SC", -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
  --mono: "JetBrains Mono", "SF Mono", Consolas, monospace;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--sans);
  background: var(--bg);
  color: var(--ink);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
::selection { background: var(--blue-line); }

/* ─────────── 导航 ─────────── */
.nav {
  position: sticky; top: 0; z-index: 50;
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 clamp(20px, 4vw, 56px);
  height: 60px;
  background: rgba(255, 255, 255, 0.86);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}
.nav-brand {
  font-weight: 800; font-size: 15px; letter-spacing: 0.02em;
  display: flex; align-items: center; gap: 9px;
}
.nav-brand::before {
  content: ""; width: 8px; height: 8px; border-radius: 2px;
  background: linear-gradient(135deg, var(--blue), var(--cyan));
  box-shadow: 0 0 0 3px var(--blue-soft);
}
.nav-links { display: flex; align-items: center; gap: 26px; }
.nav-links a {
  color: var(--muted); text-decoration: none; font-size: 14px; font-weight: 500;
  transition: color 0.15s;
}
.nav-links a:hover { color: var(--blue); }
.nav-status {
  display: inline-flex; align-items: center; gap: 7px;
  font-family: var(--mono); font-size: 11.5px; font-weight: 600;
  color: var(--cyan-deep); background: var(--cyan-soft);
  border: 1px solid #a5f3fc; border-radius: 999px; padding: 4px 12px;
}
.nav-status i {
  width: 6px; height: 6px; border-radius: 50%; background: var(--cyan);
  box-shadow: 0 0 0 3px rgba(6, 182, 212, 0.18);
}

/* ─────────── HERO ─────────── */
.hero {
  position: relative; overflow: hidden;
  padding: clamp(72px, 10vw, 120px) clamp(20px, 6vw, 80px) clamp(56px, 7vw, 88px);
  background:
    radial-gradient(1200px 480px at 85% -10%, rgba(29, 78, 216, 0.07), transparent 60%),
    radial-gradient(900px 420px at 5% 110%, rgba(6, 182, 212, 0.06), transparent 60%),
    var(--bg);
}
.hero::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background-image: radial-gradient(rgba(100, 116, 139, 0.16) 1px, transparent 1px);
  background-size: 26px 26px;
  mask-image: linear-gradient(180deg, rgba(0,0,0,0.9), transparent 85%);
  -webkit-mask-image: linear-gradient(180deg, rgba(0,0,0,0.9), transparent 85%);
}
.hero-inner { position: relative; max-width: 1120px; margin: 0 auto; }

.kicker {
  display: inline-flex; align-items: center; gap: 9px;
  font-family: var(--mono); font-size: 12px; font-weight: 600;
  letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--blue); margin-bottom: 22px;
}
.kicker::before {
  content: ""; width: 7px; height: 7px; border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 0 4px rgba(6, 182, 212, 0.16);
}
.hero h1 {
  font-size: clamp(38px, 5.6vw, 64px);
  font-weight: 900; letter-spacing: -0.015em; line-height: 1.16;
  max-width: 16em;
}
.hero h1 .accent {
  background: linear-gradient(100deg, var(--blue) 20%, var(--cyan) 90%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero-sub {
  margin-top: 18px; font-size: clamp(15px, 1.6vw, 17.5px);
  color: var(--ink-2); max-width: 42em;
}
.hero-sub b { color: var(--blue); font-weight: 700; }

/* prompt 输入条 */
.prompt-bar {
  margin-top: 34px;
  display: flex; align-items: center; gap: 14px;
  max-width: 560px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 15px 18px;
  text-decoration: none;
  box-shadow: var(--shadow-md);
  transition: transform 0.18s, box-shadow 0.18s, border-color 0.18s;
}
.prompt-bar:hover {
  transform: translateY(-2px);
  border-color: var(--blue-line);
  box-shadow: var(--shadow-lg);
}
.pb-spark {
  flex: none; width: 32px; height: 32px; border-radius: 9px;
  display: grid; place-items: center;
  font-size: 15px; color: #fff;
  background: linear-gradient(135deg, var(--blue), var(--cyan));
}
.pb-text { flex: 1; font-size: 15px; color: var(--ink-2); font-weight: 500; }
.pb-text em { font-style: normal; color: var(--faint); }
.pb-arrow {
  flex: none; font-family: var(--mono); font-weight: 600; font-size: 15px;
  color: var(--blue);
}
.pb-hint {
  margin-top: 10px; font-family: var(--mono); font-size: 12px;
  color: var(--faint); letter-spacing: 0.04em;
}

/* 数据带 */
.stat-band {
  margin-top: 46px;
  display: grid; grid-template-columns: repeat(4, 1fr);
  max-width: 880px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  box-shadow: var(--shadow-sm);
}
.stat {
  padding: 20px 24px;
  border-left: 1px solid var(--line-soft);
}
.stat:first-child { border-left: none; }
.stat-num {
  display: block; font-family: var(--mono); font-weight: 600;
  font-size: clamp(20px, 2.4vw, 27px); color: var(--blue);
  letter-spacing: -0.02em;
}
.stat-label { font-size: 13px; color: var(--muted); }

/* ─────────── 通用 section ─────────── */
.section {
  max-width: 1120px; margin: 0 auto;
  padding: clamp(56px, 7vw, 92px) clamp(20px, 4vw, 40px) 0;
}
.sec-label {
  font-family: var(--mono); font-size: 12px; font-weight: 600;
  letter-spacing: 0.16em; text-transform: uppercase;
  color: var(--cyan-deep); margin-bottom: 12px;
  display: flex; align-items: center; gap: 10px;
}
.sec-label::before { content: ""; width: 22px; height: 1px; background: var(--cyan); }
.sec-title {
  font-size: clamp(24px, 3.2vw, 34px); font-weight: 800;
  letter-spacing: -0.01em; line-height: 1.3; margin-bottom: 14px;
}
.sec-sub { color: var(--muted); font-size: 15px; max-width: 62em; margin-bottom: 8px; }

/* ─────────── 痛点对比 ─────────── */
.compare-grid {
  margin-top: 34px;
  display: grid; grid-template-columns: 1fr 1fr; gap: 20px;
}
.compare-col {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  padding: 28px 30px;
  box-shadow: var(--shadow-sm);
}
.compare-col.accent-col {
  border-color: var(--blue-line);
  background: linear-gradient(180deg, var(--blue-soft), #fff 70%);
  box-shadow: var(--shadow-md);
}
.compare-tag {
  font-family: var(--mono); font-size: 12px; font-weight: 600;
  letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--faint); margin-bottom: 18px;
}
.accent-col .compare-tag { color: var(--blue); }
.compare-list { list-style: none; }
.compare-list li {
  display: flex; gap: 14px; align-items: baseline;
  padding: 11px 0; font-size: 15px; color: var(--ink-2);
  border-top: 1px dashed var(--line);
}
.compare-list li:first-child { border-top: none; }
.ci-time {
  flex: none; width: 62px;
  font-family: var(--mono); font-size: 12.5px; font-weight: 600;
  color: var(--muted);
}
.accent-col .ci-time { color: var(--blue); }

/* ─────────── 工作流 · agent loop ─────────── */
.loop-wrap { position: relative; margin-top: 46px; }
.loop-line {
  position: absolute; top: 30px; left: 3%; right: 3%; height: 2px;
  background: linear-gradient(90deg, transparent, var(--blue-line) 6%, var(--blue-line) 94%, transparent);
}
.loop-pulse {
  position: absolute; top: 26px; left: 3%;
  width: 10px; height: 10px; border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 0 5px rgba(6, 182, 212, 0.16), 0 0 14px rgba(6, 182, 212, 0.65);
  animation: pulse-run 8s linear infinite;
}
@keyframes pulse-run {
  0%   { left: 3%;  opacity: 0; }
  5%   { opacity: 1; }
  95%  { opacity: 1; }
  100% { left: calc(97% - 10px); opacity: 0; }
}
.pipeline {
  position: relative;
  list-style: none;
  display: grid; grid-template-columns: repeat(7, 1fr); gap: 12px;
}
.pipeline li {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  padding: 18px 14px 16px;
  box-shadow: var(--shadow-sm);
  transition: border-color 0.15s, box-shadow 0.15s, transform 0.15s;
}
.pipeline li:hover {
  border-color: var(--blue-line);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}
.pipe-no {
  display: inline-block;
  font-family: var(--mono); font-size: 11px; font-weight: 600;
  color: var(--blue); background: var(--blue-soft);
  border: 1px solid var(--blue-line);
  border-radius: 6px; padding: 2px 8px; margin-bottom: 12px;
}
.pipe-name { font-weight: 700; font-size: 15px; margin-bottom: 6px; }
.pipe-desc { font-size: 13px; color: var(--muted); line-height: 1.65; }
.loop-note {
  margin-top: 22px;
  display: flex; align-items: center; gap: 10px;
  font-family: var(--mono); font-size: 12.5px; color: var(--muted);
}
.loop-note .loop-back {
  flex: none; color: var(--cyan-deep); font-weight: 600;
  background: var(--cyan-soft); border: 1px solid #a5f3fc;
  border-radius: 6px; padding: 2px 9px;
}
.pipe-note { margin-top: 14px; font-size: 14px; color: var(--muted); max-width: 66em; }

/* ─────────── Skill 集群 ─────────── */
.cluster { margin-top: 36px; }
.cluster-controller {
  display: flex; align-items: center; justify-content: space-between; gap: 18px;
  background: linear-gradient(120deg, #0f172a, #1e3a8a 130%);
  color: #fff; border-radius: var(--r-md);
  padding: 22px 28px;
  box-shadow: var(--shadow-lg);
}
.cc-left { display: flex; align-items: center; gap: 14px; }
.cc-dot {
  flex: none; width: 10px; height: 10px; border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 0 4px rgba(6, 182, 212, 0.25), 0 0 12px rgba(6, 182, 212, 0.8);
}
.cc-name { font-family: var(--mono); font-weight: 600; font-size: 15px; }
.cc-role { font-size: 13px; color: #a5b4d4; }
.cc-badge {
  flex: none; font-family: var(--mono); font-size: 11px; font-weight: 600;
  color: #67e8f9; border: 1px solid rgba(103, 232, 249, 0.4);
  border-radius: 999px; padding: 4px 12px;
}
.cluster-link {
  width: 1px; height: 22px; margin-left: 40px;
  background: linear-gradient(180deg, var(--blue), var(--blue-line));
}
.cluster-layers { display: grid; gap: 12px; }
.layer {
  display: grid; grid-template-columns: 108px 1fr; gap: 16px; align-items: start;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  padding: 18px 20px;
  box-shadow: var(--shadow-sm);
}
.layer-label {
  font-family: var(--mono); font-size: 12px; font-weight: 600;
  letter-spacing: 0.08em; color: var(--muted);
  padding-top: 8px;
  border-left: 2px solid var(--blue-line); padding-left: 10px;
}
.chip-row { display: grid; grid-template-columns: repeat(auto-fill, minmax(210px, 1fr)); gap: 10px; }
.chip {
  display: flex; gap: 11px; align-items: flex-start;
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  padding: 11px 13px;
  background: #fbfcfe;
  transition: border-color 0.15s, box-shadow 0.15s;
}
.chip:hover { border-color: var(--blue-line); box-shadow: var(--shadow-sm); }
.chip-dot {
  flex: none; width: 7px; height: 7px; border-radius: 50%;
  background: #cbd5e1; margin-top: 7px;
}
.chip.hot { border-color: var(--blue-line); background: var(--blue-soft); }
.chip.hot .chip-dot {
  background: var(--cyan);
  box-shadow: 0 0 0 3px rgba(6, 182, 212, 0.18);
}
.chip-name { font-family: var(--mono); font-size: 12.5px; font-weight: 600; color: var(--ink); overflow-wrap: break-word; line-height: 1.5; }
.chip-role { font-size: 12.5px; color: var(--muted); margin-top: 2px; }

/* ─────────── 真实日报 · 控制台窗口 ─────────── */
.demo-grid {
  margin-top: 36px;
  display: grid; grid-template-columns: 1fr 1fr; gap: 22px;
  align-items: start;
}
.doc {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
}
.win-chrome {
  display: flex; align-items: center; gap: 14px;
  padding: 12px 18px;
  background: linear-gradient(180deg, #f8fafc, #f1f5f9);
  border-bottom: 1px solid var(--line);
}
.win-dots { display: flex; gap: 6px; flex: none; }
.win-dots i { width: 10px; height: 10px; border-radius: 50%; }
.win-dots i:nth-child(1) { background: #fca5a5; }
.win-dots i:nth-child(2) { background: #fcd34d; }
.win-dots i:nth-child(3) { background: #86efac; }
.win-title {
  flex: 1; font-family: var(--mono); font-size: 12px; font-weight: 500;
  color: var(--muted); letter-spacing: 0.02em;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.win-badge {
  flex: none; display: inline-flex; align-items: center; gap: 6px;
  font-family: var(--mono); font-size: 11px; font-weight: 600;
  color: var(--cyan-deep); background: var(--cyan-soft);
  border: 1px solid #a5f3fc; border-radius: 999px; padding: 3px 10px;
}
.win-badge i {
  width: 6px; height: 6px; border-radius: 50%; background: var(--cyan);
  box-shadow: 0 0 0 3px rgba(6, 182, 212, 0.18);
}
.win-badge.sim { color: var(--muted); background: #f1f5f9; border-color: var(--line); }
.win-badge.sim i { background: var(--faint); box-shadow: none; }

.doc-tabs {
  display: flex; gap: 6px;
  padding: 12px 18px 0;
}
.tab {
  font-family: var(--mono); font-size: 12px; font-weight: 600;
  color: var(--muted);
  background: transparent; border: 1px solid var(--line);
  border-radius: 8px 8px 0 0; border-bottom: none;
  padding: 7px 14px; cursor: pointer;
  transition: color 0.15s, background 0.15s;
}
.tab:hover { color: var(--blue); }
.tab.active {
  color: var(--blue); background: var(--blue-soft);
  border-color: var(--blue-line);
}
.doc-body { border-top: 1px solid var(--line); padding: 26px 26px 24px; }
.doc-body.hidden { display: none; }

.doc-head { margin-bottom: 20px; }
.doc-kicker {
  font-family: var(--mono); font-size: 11.5px; font-weight: 600;
  color: var(--cyan-deep); letter-spacing: 0.06em; margin-bottom: 6px;
}
.doc-title { font-size: 21px; font-weight: 800; letter-spacing: -0.01em; }
.doc-date { font-family: var(--mono); font-size: 12.5px; color: var(--muted); margin-top: 4px; }
.doc-meta {
  margin-top: 14px;
  display: flex; flex-wrap: wrap; gap: 8px;
}
.doc-meta span {
  font-size: 12.5px; color: var(--muted);
  background: #f8fafc; border: 1px solid var(--line);
  border-radius: 6px; padding: 3px 10px;
}
.doc-meta b { font-family: var(--mono); color: var(--ink); }
.doc-meta b.navy { color: var(--blue); }
.doc-meta span.warn { color: var(--amber); border-color: var(--amber-line); background: var(--amber-soft); }
.doc-meta span.warn b { color: var(--amber); }

/* 思维链条 */
.cot-strip {
  margin-top: 16px;
  display: flex; align-items: center; flex-wrap: wrap; gap: 8px;
  background: #0f172a;
  border-radius: var(--r-sm);
  padding: 11px 14px;
}
.cot-label {
  font-family: var(--mono); font-size: 10.5px; font-weight: 600;
  letter-spacing: 0.14em; color: #67e8f9;
  border: 1px solid rgba(103, 232, 249, 0.35);
  border-radius: 5px; padding: 2px 7px; margin-right: 2px;
}
.cot-step {
  font-family: var(--mono); font-size: 11.5px; font-weight: 500;
  color: #cbd5e1; display: inline-flex; align-items: center; gap: 5px;
}
.cot-step::after { content: "✓"; color: #34d399; font-weight: 700; }
.cot-sep { width: 14px; height: 1px; background: #334155; flex: none; }
.cot-time { margin-left: auto; font-family: var(--mono); font-size: 11px; color: #8ea3c0; }

/* 条目 */
.item {
  border: 1px solid var(--line);
  border-left: 3px solid var(--blue);
  border-radius: var(--r-sm);
  padding: 16px 18px;
  margin-bottom: 14px;
  background: #fff;
  box-shadow: var(--shadow-sm);
}
.item.muted { border-left-color: #cbd5e1; background: #fbfcfe; }
.item-top {
  display: flex; align-items: center; justify-content: space-between;
  gap: 10px; flex-wrap: wrap; margin-bottom: 9px;
}
.score {
  font-family: var(--mono); font-size: 12.5px; font-weight: 600;
  color: #fff; background: var(--blue);
  border-radius: 6px; padding: 3px 10px;
}
.score.mint { background: var(--cyan-deep); }
.score.dim2 { background: #64748b; }
.score.review { background: var(--amber); }
.deadline {
  font-family: var(--mono); font-size: 12px; font-weight: 500;
  color: var(--muted);
}
.deadline.urgent {
  color: var(--red); background: #fef2f2;
  border: 1px solid #fecaca; border-radius: 6px; padding: 2px 9px;
}
.item-name { font-weight: 700; font-size: 14.5px; line-height: 1.55; }
.item-buyer { font-size: 13px; color: var(--muted); margin-top: 5px; }
.item-detail { font-size: 13px; color: var(--ink-2); margin-top: 6px; }
.tag-row { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 10px; }
.tag {
  font-family: var(--mono); font-size: 11px; font-weight: 500;
  color: var(--muted); background: #f1f5f9;
  border: 1px solid var(--line);
  border-radius: 5px; padding: 2px 8px;
}
.tag.t-ind { color: var(--blue); background: var(--blue-soft); border-color: var(--blue-line); }
.item-reason {
  margin-top: 11px; padding-top: 11px;
  border-top: 1px dashed var(--line);
  font-size: 13px; color: var(--ink-2); line-height: 1.75;
}

/* 告警 / 空状态 */
.alert-card {
  border: 1px solid var(--amber-line);
  border-left: 3px solid var(--amber);
  background: var(--amber-soft);
  border-radius: var(--r-sm);
  padding: 15px 17px; margin-bottom: 16px;
}
.ac-title { font-weight: 700; font-size: 13.5px; color: var(--amber); }
.ac-desc { font-size: 13px; color: var(--ink-2); margin-top: 5px; }
.ac-action {
  font-family: var(--mono); font-size: 12px; color: var(--amber);
  margin-top: 8px; padding-top: 8px; border-top: 1px dashed var(--amber-line);
}
.empty-state { text-align: center; padding: 34px 20px 30px; }
.es-title { font-weight: 700; font-size: 15px; }
.es-desc { font-size: 13px; color: var(--muted); margin-top: 8px; line-height: 1.8; }

.doc-foot { margin-top: 18px; }
.df-warn {
  font-size: 12.5px; color: var(--amber);
  background: var(--amber-soft); border: 1px solid var(--amber-line);
  border-radius: 6px; padding: 9px 12px; margin-bottom: 10px;
}
.df-note { font-family: var(--mono); font-size: 11.5px; color: var(--faint); }

.demo-note {
  margin-top: 22px;
  font-family: var(--mono); font-size: 12px; color: var(--faint);
  max-width: 76em;
}

/* ─────────── 规则引擎 ─────────── */
.rules-grid {
  margin-top: 34px;
  display: grid; grid-template-columns: 1.25fr 1fr; gap: 20px;
  align-items: stretch;
}
.panel {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  padding: 26px 28px;
  box-shadow: var(--shadow-sm);
}
.panel-label {
  font-family: var(--mono); font-size: 12px; font-weight: 600;
  letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--muted); margin-bottom: 16px;
}
.score-row {
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  padding: 10px 0; border-top: 1px dashed var(--line);
  font-size: 14px;
}
.sr-name { color: var(--ink-2); font-weight: 600; }
.sr-eg { display: block; font-weight: 400; font-size: 12px; color: var(--faint); font-family: var(--mono); margin-top: 2px; }
.sr-val { font-family: var(--mono); font-weight: 600; font-size: 15px; }
.sr-val.pos { color: var(--blue); }
.sr-val.neg { color: var(--red); }
.score-threshold {
  margin-top: 14px;
  font-family: var(--mono); font-size: 11.5px; font-weight: 600;
  color: var(--blue-deep); background: var(--blue-soft);
  border: 1px solid var(--blue-line);
  border-radius: var(--r-sm); padding: 10px 14px;
}
.rule-list { list-style: none; }
.rule-list li {
  display: flex; gap: 12px; align-items: baseline;
  padding: 8px 0; font-size: 13px; color: var(--ink-2);
  border-top: 1px dashed var(--line);
}
.rule-list li:first-child { border-top: none; }
.rule-list b {
  flex: none; width: 62px;
  font-family: var(--mono); font-size: 11.5px; font-weight: 600;
  color: var(--cyan-deep);
}
.verify-panel {
  background: linear-gradient(160deg, #0f172a, #172554 140%);
  border: none; color: #fff;
  box-shadow: var(--shadow-lg);
}
.verify-panel .panel-label { color: #7d92c0; }
.vp-big {
  font-family: var(--mono); font-weight: 600;
  font-size: clamp(40px, 4.6vw, 56px);
  color: #67e8f9; letter-spacing: -0.03em; line-height: 1.1;
}
.vp-title { font-weight: 700; font-size: 15.5px; margin-top: 6px; }
.vp-desc { font-size: 13px; color: #a5b4d4; margin-top: 8px; }
.vp-divider { height: 1px; background: rgba(148, 163, 184, 0.22); margin: 22px 0; }
.vp-list { list-style: none; }
.vp-list li {
  position: relative; padding: 7px 0 7px 20px;
  font-size: 13px; color: #cbd5e1;
}
.vp-list li::before {
  content: "✓"; position: absolute; left: 0;
  font-family: var(--mono); font-weight: 700; color: #34d399;
}

/* ─────────── 扩展路线 ─────────── */
.road-track {
  margin-top: 34px;
  list-style: none;
  display: grid; grid-template-columns: repeat(5, 1fr); gap: 12px;
  counter-reset: step;
}
.road-track li {
  position: relative;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  padding: 20px 18px;
  box-shadow: var(--shadow-sm);
}
.road-track li::before {
  counter-increment: step;
  content: "0" counter(step);
  display: inline-block;
  font-family: var(--mono); font-size: 10.5px; font-weight: 600;
  color: var(--faint); border: 1px solid var(--line);
  border-radius: 5px; padding: 1px 7px; margin-bottom: 12px;
}
.road-track li.active {
  border-color: var(--blue-line);
  background: linear-gradient(180deg, var(--blue-soft), #fff 75%);
  box-shadow: var(--shadow-md);
}
.road-track li.active::before { color: var(--blue); border-color: var(--blue-line); }
.rn-name { font-weight: 700; font-size: 14.5px; }
.rn-status { font-family: var(--mono); font-size: 11.5px; color: var(--muted); margin-top: 5px; }
.road-track li.active .rn-status { color: var(--blue); font-weight: 600; }
.road-note {
  margin-top: 20px;
  font-family: var(--mono); font-size: 12px;
  color: var(--faint); max-width: 78em;
}

/* ─────────── 页脚 ─────────── */
.footer {
  margin-top: clamp(64px, 8vw, 100px);
  border-top: 1px solid var(--line);
  background: var(--surface);
  padding: 34px clamp(20px, 4vw, 56px) 40px;
  text-align: center;
}
.foot-line { font-weight: 800; font-size: 14px; }
.foot-sub { font-family: var(--mono); font-size: 11.5px; color: var(--faint); margin-top: 7px; }

/* ─────────── 响应式 ─────────── */
@media (max-width: 1000px) {
  .pipeline { grid-template-columns: repeat(4, 1fr); }
  .loop-line, .loop-pulse { display: none; }
  .demo-grid, .rules-grid, .compare-grid { grid-template-columns: 1fr; }
  .road-track { grid-template-columns: repeat(3, 1fr); }
  .nav-links { display: none; }
}
@media (max-width: 640px) {
  .pipeline { grid-template-columns: repeat(2, 1fr); }
  .stat-band { grid-template-columns: repeat(2, 1fr); }
  .stat:nth-child(3) { border-left: none; }
  .stat { border-top: 1px solid var(--line-soft); }
  .stat:nth-child(-n+2) { border-top: none; }
  .road-track { grid-template-columns: 1fr 1fr; }
  .layer { grid-template-columns: 1fr; }
  .layer-label { border-left: none; padding-left: 0; }
  .cluster-controller { flex-direction: column; align-items: flex-start; }
  .cot-time { margin-left: 0; width: 100%; }
}