/* =====================================================================
   智推云 AIGEO 官网落地页样式
   零依赖 · 系统字体栈 · 亮/暗双主题（CSS 自定义属性驱动）
   ---------------------------------------------------------------------
   目录：
   01 设计令牌   02 基础重置   03 通用组件（按钮/图标/标题/入场动画）
   04 导航栏     05 Hero       06 信任条 marquee
   07 痛点转折   08 Bento      09 工作流
   10 对比表     11 成效数字   12 客户证言
   13 定价       14 FAQ        15 结尾 CTA   16 页脚
   17 响应式     18 无障碍与降级
   ===================================================================== */

/* ============ 01 设计令牌 ============ */
:root {
  /* 品牌渐变三色（按钮等固定元素直接使用） */
  --brand-1: #6366F1;
  --brand-2: #8B5CF6;
  --brand-3: #D946EF;

  /* 亮色主题 */
  --bg: #F7F8FC;
  --surface: #FFFFFF;
  --elevated: #FFFFFF;
  --band: #FFFFFF;
  --text: #0F172A;
  --muted: #64748B;
  --border: #E8ECF4;
  --border-strong: #DCE2EE;

  /* 渐变文字用色（亮色下取原色，暗色下提亮保证对比度） */
  --g1: #5457E8;
  --g2: #8B5CF6;
  --g3: #C93BE0;

  --brand-ink: #5457E8;          /* 可读的品牌色文字/图标 */
  --focus: #4F46E5;
  --ok: #0E9F6E;
  --warn: #D97706;
  --danger: #E11D48;

  --card-inset: inset 0 0 0 0 transparent;
  --shadow-card: 0 1px 2px rgba(15, 23, 42, .05), 0 10px 30px -18px rgba(15, 23, 42, .18);
  --shadow-hover: 0 2px 4px rgba(15, 23, 42, .05), 0 22px 48px -20px rgba(79, 70, 229, .28);
  --shadow-nav: 0 8px 30px -18px rgba(15, 23, 42, .22);

  --nav-bg: rgba(247, 248, 252, .78);
  --grid-c: rgba(15, 23, 42, .05);
  --blob-o: .38;
  --tint: rgba(99, 102, 241, .09);       /* 品牌淡底 */
  --tint-strong: rgba(99, 102, 241, .16);
  --track: #EDF0F7;                       /* 迷你图表底轨 */
  --sov-c1: #C3CCDB;
  --sov-c2: #E2E7F0;

  --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC',
               'HarmonyOS Sans SC', 'Microsoft YaHei', Inter, 'Helvetica Neue', Arial, sans-serif;
  --font-mono: ui-monospace, 'Cascadia Code', Consolas, 'SF Mono', 'JetBrains Mono', Menlo, monospace;

  --ease: cubic-bezier(0.16, 1, 0.3, 1);
  --dur: 260ms;

  --r-card: 18px;
  --r-btn: 12px;
  --r-pill: 999px;

  --container: 1200px;
}

:root[data-theme="dark"] {
  --bg: #0A0B10;
  --surface: #12141C;
  --elevated: #181B25;
  --band: #0D0F18;
  --text: #E8EAF0;
  --muted: #9BA3B4;
  --border: rgba(255, 255, 255, .07);
  --border-strong: rgba(255, 255, 255, .12);

  --g1: #818CF8;
  --g2: #A78BFA;
  --g3: #E879F9;

  --brand-ink: #A5B4FC;
  --focus: #A5B4FC;
  --ok: #34D399;
  --warn: #FBBF24;
  --danger: #FB7185;

  --card-inset: inset 0 1px 0 rgba(255, 255, 255, .06);  /* 暗色卡片顶部高光 */
  --shadow-card: 0 1px 2px rgba(0, 0, 0, .35), 0 14px 40px -24px rgba(0, 0, 0, .6);
  --shadow-hover: 0 2px 4px rgba(0, 0, 0, .35), 0 26px 60px -24px rgba(139, 92, 246, .32);
  --shadow-nav: 0 10px 34px -20px rgba(0, 0, 0, .8);

  --nav-bg: rgba(10, 11, 16, .72);
  --grid-c: rgba(255, 255, 255, .045);
  --blob-o: .5;
  --tint: rgba(129, 140, 248, .12);
  --tint-strong: rgba(129, 140, 248, .2);
  --track: #1E2230;
  --sov-c1: #39415A;
  --sov-c2: #262C3E;

  color-scheme: dark;
}

/* ============ 02 基础重置 ============ */
*, *::before, *::after { box-sizing: border-box; }

html {
  scroll-padding-top: 92px;
  -webkit-text-size-adjust: 100%;
}
@media (prefers-reduced-motion: no-preference) {
  html { scroll-behavior: smooth; }
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.65;
  color: var(--text);
  background: var(--bg);
  overflow-x: clip;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4, p, ul, ol, figure, blockquote, pre { margin: 0; }
ul, ol { padding: 0; list-style: none; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; padding: 0; }
img, svg { display: block; }
em { font-style: normal; }

::selection { background: rgba(139, 92, 246, .28); }

:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 2px;
  border-radius: 4px;
}

.skip-link {
  position: fixed;
  top: -48px;
  left: 16px;
  z-index: 200;
  padding: 10px 16px;
  background: var(--surface);
  border: 1px solid var(--border-strong);
  border-radius: 10px;
  box-shadow: var(--shadow-card);
  transition: top var(--dur) var(--ease);
}
.skip-link:focus-visible { top: 12px; }

.container {
  width: min(var(--container), 100% - 48px);
  margin-inline: auto;
}

/* ============ 03 通用组件 ============ */
.icon {
  width: 18px;
  height: 18px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
  flex: none;
}

/* —— 按钮 —— */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 18px;
  border-radius: var(--r-btn);
  border: 1px solid transparent;
  font-size: 14.5px;
  font-weight: 600;
  line-height: 1.4;
  white-space: nowrap;
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease),
              background-color var(--dur) var(--ease), border-color var(--dur) var(--ease),
              color var(--dur) var(--ease), filter var(--dur) var(--ease);
}
.btn .icon { width: 16px; height: 16px; }
.btn:active { transform: translateY(1px) scale(.99); }

.btn-primary {
  background: linear-gradient(135deg, var(--brand-1) 0%, var(--brand-2) 52%, var(--brand-3) 118%);
  color: #fff;
}
.btn-primary:hover { filter: brightness(1.07) saturate(1.05); transform: translateY(-1px); }

.btn-glow { box-shadow: 0 1px 2px rgba(15, 23, 42, .18), 0 10px 26px -8px rgba(139, 92, 246, .55); }
.btn-glow:hover { box-shadow: 0 1px 2px rgba(15, 23, 42, .18), 0 14px 34px -8px rgba(139, 92, 246, .68); }

.btn-secondary {
  background: var(--surface);
  border-color: var(--border-strong);
  color: var(--text);
  box-shadow: 0 1px 2px rgba(15, 23, 42, .05);
}
.btn-secondary:hover { border-color: var(--brand-2); color: var(--brand-ink); transform: translateY(-1px); }

.btn-ghost { color: var(--muted); padding-inline: 12px; }
.btn-ghost:hover { color: var(--text); }

.btn-invert { background: #fff; color: #312E81; }
.btn-invert:hover { transform: translateY(-1px); box-shadow: 0 14px 30px -10px rgba(15, 23, 42, .45); }

.btn-outline { border-color: rgba(255, 255, 255, .55); color: #fff; }
.btn-outline:hover { background: rgba(255, 255, 255, .12); }

.btn-lg { padding: 13px 26px; font-size: 15.5px; border-radius: 13px; }
.btn-block { width: 100%; }

/* —— 区块标题 —— */
.sec-head {
  max-width: 720px;
  margin: 0 auto 56px;
  text-align: center;
}
.sec-head h2 {
  font-size: clamp(28px, 3.8vw, 42px);
  font-weight: 700;
  line-height: 1.22;
  letter-spacing: .3px;
  text-wrap: balance;
  margin-top: 18px;
}
.sec-head p {
  margin-top: 14px;
  font-size: 16px;
  color: var(--muted);
  text-wrap: pretty;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border-radius: var(--r-pill);
  border: 1px solid var(--border);
  background: var(--surface);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .16em;
  color: var(--brand-ink);
  box-shadow: var(--card-inset);
}
.eyebrow-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--brand-1), var(--brand-3));
  box-shadow: 0 0 8px rgba(139, 92, 246, .8);
}

.grad-text {
  background: linear-gradient(100deg, var(--g1) 0%, var(--g2) 48%, var(--g3) 96%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* —— 滚动入场 —— */
@media (prefers-reduced-motion: no-preference) {
  [data-reveal],
  [data-reveal-group] > * {
    opacity: 0;
    translate: 0 26px;
    transition: opacity .65s var(--ease), translate .65s var(--ease);
    transition-delay: calc(var(--d, 0) * 80ms);
  }
  [data-reveal-group] > * { transition-delay: calc(var(--i, 0) * 90ms); }
  [data-reveal].is-in,
  [data-reveal-group].is-in > * {
    opacity: 1;
    translate: 0 0;
  }
}

/* 通用带底色区块 */
.band {
  background: var(--band);
  border-block: 1px solid var(--border);
}

section { padding-block: clamp(76px, 9vw, 120px); }

/* ============ 04 导航栏 ============ */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(16px) saturate(1.5);
  -webkit-backdrop-filter: blur(16px) saturate(1.5);
  background: var(--nav-bg);
  border-bottom: 1px solid transparent;
  transition: border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease),
              background-color var(--dur) var(--ease);
}
.nav.scrolled {
  border-bottom-color: var(--border);
  box-shadow: var(--shadow-nav);
}

.nav-inner {
  display: flex;
  align-items: center;
  gap: 28px;
  height: 66px;
}

.brand { display: inline-flex; align-items: center; gap: 10px; }
.brand-mark { width: 30px; height: 30px; }
.brand-name {
  font-size: 17px;
  font-weight: 700;
  letter-spacing: .2px;
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
  white-space: nowrap;
}
.brand-name em {
  font-family: var(--font-mono);
  font-size: 13.5px;
  font-weight: 700;
  letter-spacing: .06em;
  background: linear-gradient(100deg, var(--g1), var(--g3));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.nav-links {
  display: flex;
  gap: 4px;
  margin-inline: auto;
}
.nav-links a {
  padding: 8px 14px;
  border-radius: 10px;
  font-size: 14px;
  font-weight: 500;
  color: var(--muted);
  transition: color var(--dur) var(--ease), background-color var(--dur) var(--ease);
}
.nav-links a:hover { color: var(--text); background: var(--tint); }

.nav-actions { display: flex; align-items: center; gap: 10px; }

.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: 11px;
  border: 1px solid var(--border-strong);
  background: var(--surface);
  color: var(--muted);
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease),
              transform var(--dur) var(--ease);
}
.theme-toggle:hover { color: var(--brand-ink); border-color: var(--brand-2); transform: rotate(12deg); }
:root[data-theme="light"] .icon-sun { display: none; }
:root[data-theme="dark"] .icon-moon { display: none; }

.menu-toggle {
  display: none;
  width: 38px;
  height: 38px;
  border-radius: 11px;
  border: 1px solid var(--border-strong);
  background: var(--surface);
  color: var(--text);
  align-items: center;
  justify-content: center;
}
.menu-toggle .icon-shut { display: none; }
.menu-toggle[aria-expanded="true"] .icon-open { display: none; }
.menu-toggle[aria-expanded="true"] .icon-shut { display: block; }

.mobile-menu {
  display: none;
  flex-direction: column;
  gap: 2px;
  padding: 10px 20px 18px;
  border-top: 1px solid var(--border);
}
.mobile-menu a:not(.btn) {
  padding: 13px 10px;
  border-radius: 10px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text);
}
.mobile-menu a:not(.btn):hover { background: var(--tint); }
.mobile-menu-cta { display: flex; gap: 10px; margin-top: 12px; }
.mobile-menu-cta .btn { flex: 1; }

/* ============ 05 Hero ============ */
.hero {
  position: relative;
  padding-block: clamp(72px, 9vw, 116px) clamp(56px, 7vw, 96px);
  overflow: clip;
}

.hero-bg { position: absolute; inset: 0; z-index: -1; pointer-events: none; }
.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--grid-c) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-c) 1px, transparent 1px);
  background-size: 56px 56px;
  -webkit-mask-image: radial-gradient(ellipse 92% 62% at 50% 0%, #000 32%, transparent 78%);
  mask-image: radial-gradient(ellipse 92% 62% at 50% 0%, #000 32%, transparent 78%);
}
.blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(90px);
  opacity: var(--blob-o);
}
.blob-a { width: 520px; height: 420px; left: 4%;  top: -140px; background: var(--brand-1); }
.blob-b { width: 460px; height: 400px; right: 2%; top: -60px;  background: var(--brand-3); animation-delay: -6s; }
.blob-c { width: 380px; height: 340px; left: 38%; top: 260px;  background: var(--brand-2); opacity: calc(var(--blob-o) * .7); animation-delay: -12s; }
@media (prefers-reduced-motion: no-preference) {
  .blob { animation: blob-drift 20s ease-in-out infinite alternate; }
  @keyframes blob-drift {
    from { transform: translate3d(0, 0, 0) scale(1); }
    to   { transform: translate3d(46px, 34px, 0) scale(1.12); }
  }
}

.hero-inner { display: flex; flex-direction: column; align-items: center; }

.hero-copy { max-width: 860px; text-align: center; }

.hero-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 16px;
  border-radius: var(--r-pill);
  border: 1px solid var(--border-strong);
  background: color-mix(in srgb, var(--surface) 74%, transparent);
  font-size: 13px;
  font-weight: 600;
  color: var(--brand-ink);
  box-shadow: var(--card-inset), 0 1px 2px rgba(15, 23, 42, .05);
}
.hero-pill .icon { width: 15px; height: 15px; }

.hero-title {
  margin-top: 26px;
  font-size: clamp(36px, 6.2vw, 66px);
  font-weight: 800;
  line-height: 1.16;
  letter-spacing: .5px;
  text-wrap: balance;
}

.hero-sub {
  margin: 24px auto 0;
  max-width: 640px;
  font-size: clamp(15.5px, 1.5vw, 17.5px);
  line-height: 1.8;
  color: var(--muted);
  text-wrap: pretty;
}

.hero-cta {
  margin-top: 34px;
  display: flex;
  justify-content: center;
  gap: 14px;
  flex-wrap: wrap;
}
.hero-note {
  margin-top: 16px;
  font-size: 13px;
  color: var(--muted);
  opacity: .85;
}

/* —— Hero 产品界面示意（纯 CSS/SVG 绘制） —— */
.hero-visual {
  position: relative;
  width: min(1020px, 100%);
  margin-top: clamp(48px, 6vw, 76px);
}

.hero-halo {
  position: absolute;
  inset: -8% -6%;
  background:
    radial-gradient(46% 56% at 30% 42%, rgba(99, 102, 241, .34), transparent 70%),
    radial-gradient(42% 52% at 72% 58%, rgba(217, 70, 239, .26), transparent 70%);
  filter: blur(52px);
  z-index: -1;
  pointer-events: none;
}

.mock-scene { perspective: 1600px; --mx: 0; --my: 0; }

.mock-window {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 20px;
  box-shadow:
    var(--card-inset),
    0 1px 2px rgba(15, 23, 42, .08),
    0 40px 90px -30px rgba(49, 46, 129, .35);
  overflow: hidden;
  transform: rotateX(calc(5deg + var(--my) * -3.6deg)) rotateY(calc(var(--mx) * 4.6deg));
  transform-style: preserve-3d;
  transition: transform .18s ease-out;
}
:root[data-theme="dark"] .mock-window {
  box-shadow:
    var(--card-inset),
    0 1px 2px rgba(0, 0, 0, .5),
    0 44px 100px -30px rgba(0, 0, 0, .75);
}

.mock-titlebar {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 12px 18px;
  border-bottom: 1px solid var(--border);
  background: color-mix(in srgb, var(--surface) 55%, var(--bg));
}
.mock-dots { display: flex; gap: 6px; }
.mock-dots i { width: 10px; height: 10px; border-radius: 50%; background: var(--border-strong); }
.mock-dots i:first-child { background: #F87171; }
.mock-dots i:nth-child(2) { background: #FBBF24; }
.mock-dots i:last-child { background: #34D399; }
.mock-url {
  flex: 1;
  min-width: 0;
  text-align: center;
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--muted);
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 4px 12px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.mock-live {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 11px;
  font-weight: 600;
  color: var(--ok);
  white-space: nowrap;
}
.mock-live i { width: 7px; height: 7px; border-radius: 50%; background: var(--ok); }
@media (prefers-reduced-motion: no-preference) {
  .mock-live i { animation: live-pulse 1.8s ease-in-out infinite; }
  @keyframes live-pulse {
    0%, 100% { box-shadow: 0 0 0 0 rgba(16, 185, 129, .5); }
    55%      { box-shadow: 0 0 0 5px rgba(16, 185, 129, 0); }
  }
}

.mock-body { display: flex; }

.mock-side {
  flex: none;
  width: 58px;
  padding: 16px 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  border-right: 1px solid var(--border);
  background: color-mix(in srgb, var(--surface) 55%, var(--bg));
}
.mock-side-logo {
  width: 26px;
  height: 26px;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--brand-1), var(--brand-3));
  margin-bottom: 8px;
}
.mock-side-item {
  width: 30px;
  height: 30px;
  border-radius: 9px;
  background: var(--track);
}
.mock-side-item.is-on {
  background: var(--tint-strong);
  box-shadow: inset 0 0 0 1px rgba(139, 92, 246, .4);
}

.mock-main { flex: 1; min-width: 0; padding: 20px 22px 22px; }

.mock-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 12px; }
.mock-h1 { font-size: 16px; font-weight: 700; }
.mock-h2 { margin-top: 3px; font-size: 12px; color: var(--muted); }
.mock-chips { display: flex; gap: 6px; }
.mock-chips span {
  font-size: 11px;
  font-weight: 600;
  color: var(--muted);
  padding: 4px 10px;
  border-radius: 8px;
  border: 1px solid var(--border);
}
.mock-chips span.is-on { color: var(--brand-ink); background: var(--tint); border-color: transparent; }

.mock-kpis {
  display: grid;
  grid-template-columns: auto 1fr 1fr 1fr;
  gap: 12px;
  margin-top: 16px;
}

.mock-score {
  position: relative;
  width: 96px;
  height: 96px;
}
.mock-score svg { width: 100%; height: 100%; transform: rotate(-90deg); }
.ring-bg { fill: none; stroke: var(--track); stroke-width: 9; }
.ring-fg {
  fill: none;
  stroke-width: 9;
  stroke-linecap: round;
  stroke-dasharray: 238.76;
  stroke-dashoffset: 238.76;
}
.hero-visual.is-in .ring-fg,
.no-motion .ring-fg { stroke-dashoffset: 43; }
@media (prefers-reduced-motion: no-preference) {
  .ring-fg { transition: stroke-dashoffset 1.3s var(--ease) .5s; }
}
.mock-score-txt {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0;
}
.mock-score-txt strong { font-family: var(--font-mono); font-size: 24px; font-weight: 700; line-height: 1.1; }
.mock-score-txt span { font-size: 10.5px; color: var(--muted); }

.mock-kpi {
  border: 1px solid var(--border);
  border-radius: 13px;
  padding: 12px 14px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 2px;
  background: color-mix(in srgb, var(--surface) 72%, var(--bg));
  min-width: 0;
}
.mock-kpi span { font-size: 11.5px; color: var(--muted); }
.mock-kpi strong { font-family: var(--font-mono); font-size: 19px; font-weight: 700; font-variant-numeric: tabular-nums; }
.mock-kpi em { font-family: var(--font-mono); font-size: 11px; font-weight: 600; }
.mock-kpi .up { color: var(--ok); }

.mock-grid {
  display: grid;
  grid-template-columns: 1.55fr 1fr;
  gap: 12px;
  margin-top: 12px;
}
.mock-chart, .mock-ranks {
  border: 1px solid var(--border);
  border-radius: 13px;
  padding: 14px 16px;
  background: color-mix(in srgb, var(--surface) 72%, var(--bg));
  min-width: 0;
}
.mock-label {
  font-size: 12px;
  font-weight: 600;
  color: var(--text);
  display: flex;
  justify-content: space-between;
  align-items: baseline;
}
.mock-label span { font-size: 10.5px; font-weight: 500; color: var(--muted); font-family: var(--font-mono); }

.mock-chart svg { width: 100%; height: 118px; margin-top: 10px; }
.chart-grid line { stroke: var(--track); stroke-width: 1; }
.chart-line {
  fill: none;
  stroke-width: 3;
  stroke-linecap: round;
  stroke-dasharray: 1200;
  stroke-dashoffset: 1200;
}
.hero-visual.is-in .chart-line,
.no-motion .chart-line { stroke-dashoffset: 0; }
@media (prefers-reduced-motion: no-preference) {
  .chart-line { transition: stroke-dashoffset 1.7s var(--ease) .45s; }
}
.chart-area { opacity: 0; }
.hero-visual.is-in .chart-area,
.no-motion .chart-area { opacity: 1; }
@media (prefers-reduced-motion: no-preference) {
  .chart-area { transition: opacity .9s ease 1.2s; }
}
.chart-dot { fill: var(--brand-3); }
@media (prefers-reduced-motion: no-preference) {
  .chart-dot { animation: dot-pulse 2.2s ease-in-out infinite; }
  @keyframes dot-pulse {
    0%, 100% { opacity: 1; }
    50%      { opacity: .35; }
  }
}

.mock-ranks { display: flex; flex-direction: column; gap: 9px; }
.mock-rank, .mm-rank {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
}
.rk-name {
  flex: none;
  width: 64px;
  font-size: 11.5px;
  color: var(--muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.rk-bar {
  flex: 1;
  height: 8px;
  border-radius: var(--r-pill);
  background: var(--track);
  overflow: hidden;
}
.rk-bar i {
  display: block;
  height: 100%;
  width: var(--w);
  border-radius: inherit;
  background: linear-gradient(90deg, var(--brand-1), var(--brand-2) 60%, var(--brand-3));
  transition: transform .5s var(--ease);
  transform-origin: left center;
}
.rk-val {
  flex: none;
  width: 24px;
  text-align: right;
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}

/* —— 悬浮卡片 —— */
.float-card {
  position: absolute;
  background: var(--elevated);
  border: 1px solid var(--border);
  border-radius: 16px;
  box-shadow: var(--card-inset), 0 24px 60px -20px rgba(15, 23, 42, .4);
  pointer-events: none;
  transform: translate3d(calc(var(--mx) * 12px), calc(var(--my) * 10px), 0);
}
:root[data-theme="dark"] .float-card { box-shadow: var(--card-inset), 0 24px 60px -18px rgba(0, 0, 0, .7); }

.float-answer {
  right: -14px;
  top: -34px;
  width: 296px;
  padding: 14px 16px;
}
@media (prefers-reduced-motion: no-preference) {
  .float-answer { animation: bob 7s ease-in-out infinite; }
  .float-alert  { animation: bob 7s ease-in-out -3.2s infinite; }
  @keyframes bob {
    0%, 100% { margin-top: 0; }
    50%      { margin-top: -9px; }
  }
}
.fa-q { font-size: 12px; color: var(--muted); }
.fa-head {
  display: flex;
  align-items: center;
  gap: 7px;
  margin-top: 9px;
  font-size: 12.5px;
  font-weight: 700;
}
.fa-head .icon { width: 15px; height: 15px; color: var(--brand-ink); }
.fa-head em {
  margin-left: auto;
  font-size: 10.5px;
  font-weight: 700;
  color: #fff;
  padding: 2.5px 9px;
  border-radius: var(--r-pill);
  background: linear-gradient(135deg, var(--brand-1), var(--brand-3));
}
.fa-body { margin-top: 8px; font-size: 12.5px; line-height: 1.7; color: var(--muted); }
.fa-body strong { color: var(--text); }
.caret {
  display: inline-block;
  width: 2px;
  height: 13px;
  margin-left: 2px;
  vertical-align: -2px;
  background: var(--brand-2);
}
@media (prefers-reduced-motion: no-preference) {
  .caret { animation: blink 1.1s steps(1) infinite; }
  @keyframes blink { 50% { opacity: 0; } }
}
.fa-src {
  display: flex;
  align-items: center;
  gap: 5px;
  margin-top: 10px;
  padding-top: 10px;
  border-top: 1px dashed var(--border-strong);
  font-family: var(--font-mono);
  font-size: 10.5px;
  color: var(--ok);
}
.fa-src .icon { width: 13px; height: 13px; }

.float-alert {
  left: -16px;
  bottom: -26px;
  display: flex;
  align-items: center;
  gap: 11px;
  width: 320px;
  padding: 12px 15px;
}
.fl-icon {
  flex: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: 10px;
  color: #fff;
  background: linear-gradient(135deg, var(--brand-1), var(--brand-3));
}
.fl-icon .icon { width: 17px; height: 17px; }
.fl-t { font-size: 12.5px; font-weight: 700; }
.fl-d { font-size: 11.5px; color: var(--muted); margin-top: 1px; }
.fl-time { margin-left: auto; align-self: flex-start; font-size: 10.5px; color: var(--muted); font-family: var(--font-mono); }

/* ============ 06 信任条 marquee ============ */
.trust { padding-block: 8px clamp(64px, 7vw, 88px); }
.trust-title {
  text-align: center;
  font-size: 13.5px;
  font-weight: 600;
  letter-spacing: .08em;
  color: var(--muted);
  margin-bottom: 26px;
}

.marquee {
  overflow: hidden;
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 10%, #000 90%, transparent);
  mask-image: linear-gradient(90deg, transparent, #000 10%, #000 90%, transparent);
}
.marquee-track {
  --gap: 14px;
  display: flex;
  gap: var(--gap);
  width: max-content;
}
@media (prefers-reduced-motion: no-preference) {
  .marquee-track { animation: marquee 44s linear infinite; }
  .marquee:hover .marquee-track { animation-play-state: paused; }
  @keyframes marquee {
    to { transform: translateX(calc(-50% - var(--gap) / 2)); }
  }
}
.engine-list { display: flex; gap: var(--gap); }
.engine-list li {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 9px 18px;
  border-radius: var(--r-pill);
  border: 1px solid var(--border);
  background: var(--surface);
  box-shadow: var(--card-inset);
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
  white-space: nowrap;
}
.engine-list li::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--dot, var(--brand-2));
  box-shadow: 0 0 6px color-mix(in srgb, var(--dot, var(--brand-2)) 70%, transparent);
}
.engine-list .engine-more { color: var(--muted); font-weight: 500; }
.engine-list .engine-more::before { background: linear-gradient(135deg, var(--brand-1), var(--brand-3)); }

/* ============ 07 痛点转折（固定深色戏剧段落） ============ */
.pain {
  background:
    radial-gradient(52% 68% at 18% 8%, rgba(99, 102, 241, .17), transparent 68%),
    radial-gradient(46% 60% at 86% 92%, rgba(217, 70, 239, .13), transparent 66%),
    linear-gradient(180deg, #0C0D16, #0A0B10);
  border-block: 1px solid rgba(255, 255, 255, .06);
}
.pain-head h2 { color: #E8EAF0; }
.pain-head p { color: #9BA3B4; }
.eyebrow-dark { background: rgba(255, 255, 255, .04); border-color: rgba(255, 255, 255, .1); color: #C4B5FD; }

.pain-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
}
.pain-card { padding: 10px 40px; }
.pain-card + .pain-card { border-left: 1px solid rgba(255, 255, 255, .08); }
.pain-num {
  font-family: var(--font-mono);
  font-size: clamp(54px, 6.4vw, 82px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -.02em;
  font-variant-numeric: tabular-nums;
  background: linear-gradient(120deg, #818CF8, #A78BFA 50%, #E879F9);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.pain-num small {
  font-size: .34em;
  font-weight: 600;
  letter-spacing: .04em;
  margin-left: 6px;
}
.pain-card h3 { margin-top: 22px; font-size: 18px; font-weight: 700; color: #E8EAF0; }
.pain-card p:last-child { margin-top: 10px; font-size: 14.5px; line-height: 1.8; color: #9BA3B4; }
.pain-foot {
  margin-top: 44px;
  text-align: center;
  font-size: 12px;
  color: #6B7280;
}

/* ============ 08 核心能力 Bento Grid ============ */
.bento {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  grid-auto-rows: minmax(150px, auto);
  gap: 16px;
}

.bento-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 18px;
  padding: 24px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-card);
  box-shadow: var(--shadow-card), var(--card-inset);
  overflow: hidden;
  transition: transform .3s var(--ease), box-shadow .3s var(--ease);
}
/* hover 渐变描边光晕（mask 挖空技法，零图片） */
.bento-card::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  padding: 1px;
  background: linear-gradient(135deg, rgba(99, 102, 241, .75), rgba(139, 92, 246, .5) 45%, rgba(217, 70, 239, .75));
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  mask-composite: exclude;
  opacity: 0;
  transition: opacity .3s var(--ease);
  pointer-events: none;
}
.bento-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover), var(--card-inset); }
.bento-card:hover::after { opacity: 1; }

.b-monitor { grid-column: span 2; grid-row: span 2; }
.b-sov     { grid-row: span 2; }
.b-prompt  { grid-column: span 2; }
.b-factory { grid-column: 1 / -1; flex-direction: row; align-items: center; gap: 34px; }
.b-factory .card-top { flex: 1.1; }
.b-factory .mini { flex: 1.6; }

.card-top { display: flex; gap: 15px; align-items: flex-start; }
.card-icon {
  flex: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border-radius: 12px;
  background: var(--tint);
  color: var(--brand-ink);
  transition: transform .3s var(--ease);
}
.card-icon .icon { width: 21px; height: 21px; }
.bento-card:hover .card-icon { transform: scale(1.08) rotate(-4deg); }
.card-top h3 { font-size: 16.5px; font-weight: 700; line-height: 1.35; }
.card-top p { margin-top: 6px; font-size: 13.5px; line-height: 1.7; color: var(--muted); }

.mini { margin-top: auto; }

/* 监测卡 */
.mm-chips { display: flex; gap: 10px; margin-bottom: 16px; }
.mm-chips span {
  flex: 1;
  display: flex;
  flex-direction: column-reverse;
  gap: 1px;
  padding: 10px 13px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: color-mix(in srgb, var(--surface) 72%, var(--bg));
  font-size: 11.5px;
  color: var(--muted);
}
.mm-chips em {
  font-family: var(--font-mono);
  font-size: 17px;
  font-weight: 700;
  color: var(--text);
  font-variant-numeric: tabular-nums;
}
.mini-monitor { display: flex; flex-direction: column; gap: 10px; }
.mini-monitor .mm-rank { gap: 10px; }
.mini-monitor .rk-name { width: 68px; font-size: 12px; }
.rk-tag {
  flex: none;
  font-size: 10px;
  font-weight: 700;
  color: var(--brand-ink);
  background: var(--tint);
  border-radius: var(--r-pill);
  padding: 2px 8px;
}
.bento-card:hover .rk-bar i { transform: scaleX(1.02); }
.mm-status {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 8px;
  padding-top: 12px;
  border-top: 1px dashed var(--border-strong);
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--muted);
}
.mm-status span { display: inline-flex; align-items: center; gap: 7px; }
.mm-status i {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--ok);
  box-shadow: 0 0 6px color-mix(in srgb, var(--ok) 70%, transparent);
}

/* SOV 卡 */
.mini-sov { display: flex; flex-direction: column; gap: 11px; }
.sov-row span { display: block; font-size: 11.5px; color: var(--muted); margin-bottom: 5px; }
.sov-bar {
  display: flex;
  gap: 3px;
  height: 10px;
  border-radius: var(--r-pill);
  overflow: hidden;
}
.sov-bar i { width: var(--w); border-radius: 3px; }
.s-us { background: linear-gradient(90deg, var(--brand-1), var(--brand-3)); }
i.s-c1 { background: var(--sov-c1); }
i.s-c2 { background: var(--sov-c2); }
.sov-legend {
  display: flex;
  align-items: center;
  gap: 7px;
  margin-top: 2px;
  font-size: 11px;
  color: var(--muted);
}
.sov-legend i { width: 9px; height: 9px; border-radius: 3px; margin-left: 8px; }
.sov-legend i:first-child { margin-left: 0; }
.sov-note {
  margin-top: 4px;
  padding: 8px 12px;
  border-radius: 10px;
  background: var(--tint);
  font-size: 11.5px;
  line-height: 1.6;
  color: var(--brand-ink);
}

/* 告警卡 */
.mini-alert { display: flex; flex-direction: column; gap: 9px; }
.toast {
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 10px 13px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: color-mix(in srgb, var(--surface) 72%, var(--bg));
  font-size: 12px;
  font-weight: 600;
  transition: transform .3s var(--ease);
}
.toast i { flex: none; width: 8px; height: 8px; border-radius: 50%; background: var(--muted); }
.toast em { margin-left: auto; font-size: 10.5px; font-weight: 500; color: var(--muted); white-space: nowrap; }
.toast.is-hot { border-color: color-mix(in srgb, var(--danger) 34%, var(--border)); }
.toast.is-hot i { background: var(--danger); box-shadow: 0 0 7px color-mix(in srgb, var(--danger) 75%, transparent); }
.bento-card:hover .toast.is-hot { transform: translateX(3px); }

/* 技术资产卡（代码块在两种主题下均为深色，形成对比芯片） */
.mini-code pre {
  background: #0D1020;
  border: 1px solid rgba(255, 255, 255, .08);
  border-radius: 12px;
  padding: 13px 15px;
  overflow: hidden;
}
.mini-code code {
  display: block;
  font-family: var(--font-mono);
  font-size: 11.5px;
  line-height: 1.75;
  color: #D7DCEA;
  white-space: pre;
}
.mini-code .c { color: #667192; }
.mini-code .k { color: #A5B4FC; }

/* 提示词情报卡 */
.mini-prompt { display: flex; flex-direction: column; gap: 13px; }
.intent-chips { display: flex; flex-wrap: wrap; gap: 7px; }
.intent-chips span {
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
  padding: 5px 11px;
  border-radius: var(--r-pill);
  border: 1px solid var(--border);
  font-size: 11.5px;
  font-weight: 600;
  color: var(--text);
}
.intent-chips em { font-family: var(--font-mono); font-size: 10.5px; color: var(--brand-ink); }
.fanout { display: flex; align-items: center; gap: 11px; flex-wrap: wrap; }
.fan-root {
  padding: 7px 13px;
  border-radius: 11px;
  background: var(--tint);
  border: 1px solid color-mix(in srgb, var(--brand-2) 26%, transparent);
  font-size: 12px;
  font-weight: 600;
  color: var(--brand-ink);
  white-space: nowrap;
}
.fan-arrow { color: var(--muted); display: inline-flex; }
.fan-arrow .icon { width: 15px; height: 15px; }
.fan-kids { display: flex; flex-direction: column; gap: 5px; }
.fan-kids span {
  position: relative;
  padding: 4px 11px 4px 19px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--muted);
  border: 1px dashed var(--border-strong);
  border-radius: 9px;
  white-space: nowrap;
}
.fan-kids span::before {
  content: "";
  position: absolute;
  left: 8px;
  top: 50%;
  width: 5px;
  height: 5px;
  margin-top: -2.5px;
  border-radius: 50%;
  background: var(--brand-2);
}

/* RAG 卡 */
.mini-rag { display: flex; flex-direction: column; gap: 8px; }
.src-row {
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 8px 12px;
  border-radius: 11px;
  border: 1px solid var(--border);
  font-size: 12px;
  font-weight: 600;
}
.src-row i { flex: none; width: 8px; height: 8px; border-radius: 50%; }
.src-row em { margin-left: auto; font-size: 10.5px; font-weight: 600; color: var(--muted); }
.t-hi { background: var(--ok); box-shadow: 0 0 6px color-mix(in srgb, var(--ok) 70%, transparent); }
.t-md { background: var(--warn); }
.t-lo { background: var(--muted); opacity: .55; }

/* 爬虫日志卡 */
.mini-log {
  font-family: var(--font-mono);
  font-size: 11.5px;
  display: flex;
  flex-direction: column;
  gap: 7px;
}
.mini-log p {
  display: flex;
  align-items: center;
  gap: 8px;
  padding-bottom: 6px;
  border-bottom: 1px dashed var(--border);
  min-width: 0;
}
.mini-log p:last-child { border-bottom: 0; padding-bottom: 0; }
.mini-log b { font-weight: 700; color: var(--text); flex: none; }
.mini-log span { color: var(--muted); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.mini-log em { margin-left: auto; font-weight: 700; flex: none; }
.mini-log .ok { color: var(--ok); }
.mini-log .wa { color: var(--warn); }

/* 内容工厂横条卡 */
.mini-channels {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 9px;
  overflow: hidden;
  -webkit-mask-image: linear-gradient(90deg, #000 88%, transparent);
  mask-image: linear-gradient(90deg, #000 88%, transparent);
}
.ch-row { display: flex; gap: 8px; white-space: nowrap; }
.ch-row:last-child { margin-left: 26px; }
.ch-row span {
  padding: 6px 14px;
  border-radius: var(--r-pill);
  border: 1px solid var(--border);
  background: color-mix(in srgb, var(--surface) 72%, var(--bg));
  font-size: 12.5px;
  font-weight: 600;
  color: var(--muted);
  transition: color .3s var(--ease), border-color .3s var(--ease);
}
.bento-card:hover .ch-row span { color: var(--text); }
.ch-row .ch-more {
  color: var(--brand-ink);
  border-style: dashed;
  border-color: color-mix(in srgb, var(--brand-2) 40%, transparent);
  background: var(--tint);
}

/* 其余能力一览 */
.features-more {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  margin-top: 34px;
}
.features-more span {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 16px;
  border-radius: var(--r-pill);
  border: 1px solid var(--border);
  background: var(--surface);
  box-shadow: var(--card-inset);
  font-size: 13px;
  font-weight: 500;
  color: var(--muted);
}
.features-more .icon { width: 15px; height: 15px; color: var(--brand-ink); }

/* ============ 09 工作流四步 ============ */
.flow { position: relative; }
.flow-track {
  position: absolute;
  top: 27px;
  left: calc(12.5% + 28px);
  right: calc(12.5% + 28px);
  height: 2px;
  background: var(--border);
  border-radius: 2px;
}
.flow-fill {
  display: block;
  height: 100%;
  width: var(--flow, 0%);
  border-radius: inherit;
  background: linear-gradient(90deg, var(--brand-1), var(--brand-2), var(--brand-3));
  box-shadow: 0 0 10px rgba(139, 92, 246, .55);
  transition: width 1s var(--ease);
}

.flow-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
}
.flow-step { text-align: center; padding-inline: 6px; }
.fs-dot {
  position: relative;
  z-index: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  border: 1px solid var(--border-strong);
  background: var(--surface);
  color: var(--muted);
  box-shadow: 0 0 0 6px var(--band, var(--bg));
  transition: background-color .5s var(--ease), color .5s var(--ease),
              border-color .5s var(--ease), box-shadow .5s var(--ease),
              transform .5s var(--ease);
}
.fs-dot .icon { width: 23px; height: 23px; }
.flow-step.lit .fs-dot {
  background: linear-gradient(135deg, var(--brand-1), var(--brand-2) 60%, var(--brand-3));
  border-color: transparent;
  color: #fff;
  transform: scale(1.06);
  box-shadow: 0 0 0 6px var(--band, var(--bg)), 0 10px 26px -6px rgba(139, 92, 246, .6);
}
.flow-step:nth-child(2) .fs-dot { transition-delay: .12s; }
.flow-step:nth-child(3) .fs-dot { transition-delay: .24s; }
.flow-step:nth-child(4) .fs-dot { transition-delay: .36s; }

.fs-num {
  margin-top: 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .18em;
  color: var(--muted);
  transition: color .4s var(--ease);
}
.flow-step.lit .fs-num { color: var(--brand-ink); }
.flow-step h3 { margin-top: 6px; font-size: 18px; font-weight: 700; }
.flow-step p:last-child { margin-top: 9px; font-size: 13.5px; line-height: 1.75; color: var(--muted); }

/* ============ 10 数据对比表 ============ */
.table-wrap {
  border: 1px solid var(--border);
  border-radius: var(--r-card);
  background: var(--surface);
  box-shadow: var(--shadow-card), var(--card-inset);
  overflow-x: auto;
}
.cmp-table {
  width: 100%;
  min-width: 880px;
  border-collapse: separate;
  border-spacing: 0;
  font-size: 13.5px;
}
.cmp-table th, .cmp-table td {
  padding: 15px 20px;
  text-align: left;
  border-bottom: 1px solid var(--border);
  vertical-align: middle;
}
.cmp-table tbody tr:last-child th,
.cmp-table tbody tr:last-child td { border-bottom: 0; }

.cmp-table thead th {
  font-size: 13px;
  font-weight: 700;
  color: var(--muted);
  background: color-mix(in srgb, var(--surface) 55%, var(--bg));
  white-space: nowrap;
}
.cmp-table tbody th {
  font-weight: 600;
  color: var(--text);
  white-space: nowrap;
  position: sticky;
  left: 0;
  background: var(--surface);
  box-shadow: 1px 0 0 var(--border);
}
.cmp-table td { color: var(--muted); }

.cmp-table .cmp-us {
  background: linear-gradient(180deg, var(--tint), color-mix(in srgb, var(--tint) 40%, transparent));
  border-left: 1px solid color-mix(in srgb, var(--brand-2) 30%, var(--border));
  border-right: 1px solid color-mix(in srgb, var(--brand-2) 30%, var(--border));
  color: var(--text);
  font-weight: 600;
}
.cmp-table thead .cmp-us { background: var(--tint-strong); }
.cmp-us-badge {
  display: inline-block;
  padding: 5px 14px;
  border-radius: var(--r-pill);
  background: linear-gradient(135deg, var(--brand-1), var(--brand-2) 60%, var(--brand-3));
  color: #fff;
  font-size: 13px;
  font-weight: 700;
  box-shadow: 0 6px 16px -6px rgba(139, 92, 246, .6);
}

.mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 21px;
  height: 21px;
  border-radius: 50%;
  margin-right: 8px;
  vertical-align: -5px;
}
.mark .icon { width: 12px; height: 12px; stroke-width: 2.6; }
.mark-yes { background: linear-gradient(135deg, var(--brand-1), var(--brand-3)); color: #fff; }
.mark-no { background: var(--track); color: var(--muted); }
.mark-half { background: color-mix(in srgb, var(--warn) 16%, transparent); color: var(--warn); }

/* ============ 11 成效数字 ============ */
.stats { padding-block: 0 clamp(76px, 9vw, 120px); }
.stats-panel {
  position: relative;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  padding: clamp(34px, 4.5vw, 52px) clamp(24px, 4vw, 56px) clamp(26px, 3.6vw, 40px);
  border-radius: 22px;
  border: 1px solid var(--border);
  background:
    radial-gradient(60% 100% at 8% 0%, var(--tint), transparent 60%),
    radial-gradient(50% 90% at 96% 100%, color-mix(in srgb, var(--brand-3) 9%, transparent), transparent 62%),
    var(--surface);
  box-shadow: var(--shadow-card), var(--card-inset);
  overflow: hidden;
}
.stat { text-align: center; padding-block: 6px; }
.stat + .stat { border-left: 1px solid var(--border); }
.stat-num {
  font-family: var(--font-mono);
  font-size: clamp(38px, 4.6vw, 54px);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -.015em;
  font-variant-numeric: tabular-nums;
  background: linear-gradient(120deg, var(--g1), var(--g2) 55%, var(--g3));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.stat-label { margin-top: 9px; font-size: 13.5px; color: var(--muted); }
.stats-note {
  grid-column: 1 / -1;
  margin-top: 6px;
  text-align: right;
  font-size: 11.5px;
  color: var(--muted);
  opacity: .8;
}

/* ============ 12 客户证言 ============ */
.quote-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.quote-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 20px;
  padding: 28px 26px 24px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-card);
  box-shadow: var(--shadow-card), var(--card-inset);
  transition: transform .3s var(--ease), box-shadow .3s var(--ease);
}
.quote-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover), var(--card-inset); }
.quote-mark {
  position: absolute;
  top: 20px;
  right: 22px;
  width: 34px;
  height: 34px;
  color: var(--brand-2);
  opacity: .18;
}
.quote-card blockquote {
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--text);
  text-wrap: pretty;
}
.quote-card figcaption {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: auto;
  padding-top: 18px;
  border-top: 1px solid var(--border);
}
.avatar {
  flex: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--a1), var(--a2));
  color: #fff;
  font-size: 16px;
  font-weight: 700;
}
.quote-card figcaption b { display: block; font-size: 14px; }
.quote-card figcaption em { display: block; font-size: 12.5px; color: var(--muted); margin-top: 2px; }

/* ============ 13 定价 ============ */
.price-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
  align-items: stretch;
}
.price-card {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: 30px 28px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 20px;
  box-shadow: var(--shadow-card), var(--card-inset);
  transition: transform .3s var(--ease), box-shadow .3s var(--ease);
}
.price-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover), var(--card-inset); }
.price-card h3 { font-size: 18px; font-weight: 700; }
.price-desc { margin-top: 7px; font-size: 13px; color: var(--muted); min-height: 2.8em; }
.price-line { display: flex; align-items: baseline; gap: 4px; margin: 18px 0 22px; }
.price-cur { font-size: 19px; font-weight: 700; color: var(--muted); }
.price-num {
  font-family: var(--font-mono);
  font-size: 46px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: -.02em;
  font-variant-numeric: tabular-nums;
}
.price-per { font-size: 14px; color: var(--muted); }
.price-feats { margin-top: 24px; display: flex; flex-direction: column; gap: 12px; }
.price-feats li {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  font-size: 13.5px;
  line-height: 1.6;
  color: var(--muted);
}
.price-feats b { color: var(--text); font-weight: 600; }
.price-feats .icon {
  width: 17px;
  height: 17px;
  margin-top: 2px;
  color: var(--brand-ink);
  stroke-width: 2.2;
}

.price-hot {
  border-color: transparent;
  box-shadow: var(--shadow-hover), var(--card-inset);
  transform: translateY(-10px);
}
.price-hot::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  padding: 1.5px;
  background: linear-gradient(160deg, var(--brand-1), var(--brand-2) 48%, var(--brand-3));
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  mask-composite: exclude;
  pointer-events: none;
}
.price-hot:hover { transform: translateY(-14px); }
.price-hot .price-num {
  background: linear-gradient(120deg, var(--g1), var(--g3));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.price-badge {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  padding: 5px 16px;
  border-radius: var(--r-pill);
  background: linear-gradient(135deg, var(--brand-1), var(--brand-2) 60%, var(--brand-3));
  color: #fff;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .06em;
  box-shadow: 0 8px 20px -6px rgba(139, 92, 246, .65);
  white-space: nowrap;
}

/* ============ 14 FAQ ============ */
.faq-container { max-width: 780px; }
.faq-list { display: flex; flex-direction: column; gap: 12px; }
.faq-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  box-shadow: var(--card-inset);
  padding-inline: 22px;
  transition: border-color .3s var(--ease), box-shadow .3s var(--ease);
}
.faq-item.open { border-color: color-mix(in srgb, var(--brand-2) 36%, var(--border)); box-shadow: var(--shadow-card), var(--card-inset); }
.faq-q {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  width: 100%;
  padding-block: 19px;
  text-align: left;
  font-size: 15.5px;
  font-weight: 600;
  line-height: 1.5;
}
.faq-q .icon {
  flex: none;
  width: 26px;
  height: 26px;
  padding: 5px;
  border-radius: 50%;
  border: 1px solid var(--border-strong);
  color: var(--muted);
  transition: transform .32s var(--ease), color .32s var(--ease),
              border-color .32s var(--ease), background-color .32s var(--ease);
}
.faq-item.open .faq-q .icon {
  transform: rotate(45deg);
  color: #fff;
  border-color: transparent;
  background: linear-gradient(135deg, var(--brand-1), var(--brand-3));
}
/* grid-template-rows 0fr→1fr 平滑展开 */
.faq-a {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows .34s var(--ease);
}
.faq-item.open .faq-a { grid-template-rows: 1fr; }
.faq-a-inner { overflow: hidden; min-height: 0; }
.faq-a-inner p {
  padding: 2px 44px 21px 0;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--muted);
}

/* ============ 15 结尾 CTA ============ */
.cta { padding-top: 0; }
.cta-panel {
  position: relative;
  text-align: center;
  padding: clamp(52px, 8vw, 88px) clamp(24px, 6vw, 80px);
  border-radius: 26px;
  overflow: hidden;
  background: linear-gradient(135deg, #5B5BEA 0%, #8B5CF6 48%, #C93BE0 100%);
  box-shadow: 0 30px 80px -30px rgba(139, 92, 246, .55);
}
.cta-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(52% 68% at 50% -10%, rgba(255, 255, 255, .28), transparent 62%),
    radial-gradient(40% 52% at 88% 110%, rgba(255, 255, 255, .14), transparent 66%);
  pointer-events: none;
}
.cta-panel > * { position: relative; }
.cta-panel h2 {
  font-size: clamp(28px, 4.2vw, 46px);
  font-weight: 800;
  line-height: 1.25;
  color: #fff;
  letter-spacing: .4px;
  text-wrap: balance;
}
.cta-panel p { margin-top: 16px; font-size: 16px; color: rgba(255, 255, 255, .88); }
.cta-actions {
  display: flex;
  justify-content: center;
  gap: 14px;
  flex-wrap: wrap;
  margin-top: 32px;
}
.cta-note { font-size: 13px !important; color: rgba(255, 255, 255, .75) !important; margin-top: 18px !important; }

/* ============ 16 页脚 ============ */
.footer {
  border-top: 1px solid var(--border);
  background: var(--band);
  padding: 60px 0 30px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1fr 1fr;
  gap: 36px;
}
.footer-brand p { margin-top: 16px; font-size: 13.5px; line-height: 1.85; color: var(--muted); }
.footer-col h3 {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .06em;
  color: var(--text);
  margin-bottom: 16px;
}
.footer-col a, .footer-col span {
  display: block;
  font-size: 13.5px;
  color: var(--muted);
  margin-bottom: 11px;
  width: fit-content;
  transition: color var(--dur) var(--ease);
}
.footer-col a:hover { color: var(--brand-ink); }

.footer-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 48px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
  font-size: 12.5px;
  color: var(--muted);
}
.footer-links { display: flex; gap: 18px; }
.footer-links a:hover { color: var(--brand-ink); }

/* ============ 17 响应式 ============ */
@media (max-width: 1120px) {
  .footer-grid { grid-template-columns: 1.6fr 1fr 1fr 1fr; }
  .footer-grid > .footer-col:last-child { grid-column: auto; }
}

@media (max-width: 1024px) {
  .bento { grid-template-columns: repeat(2, 1fr); }
  .b-monitor { grid-column: span 2; grid-row: auto; }
  .b-sov { grid-row: auto; }
  .b-prompt { grid-column: span 2; }
  .b-factory { flex-direction: column; align-items: stretch; gap: 18px; }

  .stats-panel { grid-template-columns: repeat(2, 1fr); }
  .stat:nth-child(3) { border-left: 0; }
  .stat { padding-block: 14px; }

  .quote-grid { grid-template-columns: 1fr; max-width: 640px; margin-inline: auto; }

  .float-answer { right: -6px; top: -26px; width: 258px; }
  .float-alert { left: -6px; bottom: -20px; width: 288px; }
}

@media (max-width: 880px) {
  .nav-links, .nav-login { display: none; }
  .menu-toggle { display: inline-flex; }
  .mobile-menu.show { display: flex; }
  .nav-inner { gap: 14px; }

  .pain-grid { grid-template-columns: 1fr; gap: 42px; }
  .pain-card { padding: 0; }
  .pain-card + .pain-card { border-left: 0; padding-top: 42px; border-top: 1px solid rgba(255, 255, 255, .08); }

  .price-grid { grid-template-columns: 1fr; max-width: 460px; margin-inline: auto; }
  .price-hot { transform: none; }
  .price-hot:hover { transform: translateY(-4px); }

  /* 工作流转为纵向时间轴 */
  .flow-track {
    top: 8px;
    bottom: 8px;
    left: 27px;
    right: auto;
    width: 2px;
    height: auto;
  }
  .flow-fill { width: 2px; height: var(--flow, 0%); transition: height 1s var(--ease); }
  .flow-steps { grid-template-columns: 1fr; gap: 34px; }
  .flow-step {
    display: grid;
    grid-template-columns: 56px 1fr;
    column-gap: 20px;
    text-align: left;
    padding-inline: 0;
  }
  .fs-dot { grid-row: 1 / 4; }
  .fs-num { margin-top: 0; }
  .flow-step h3 { margin-top: 2px; }
}

@media (max-width: 700px) {
  .bento { grid-template-columns: 1fr; }
  .b-monitor, .b-prompt, .b-factory { grid-column: auto; }

  .mock-kpis { grid-template-columns: auto 1fr 1fr; }
  .mock-kpi:last-child { display: none; }
  .mock-grid { grid-template-columns: 1fr; }
  .mock-side { display: none; }

  .float-card { display: none; }

  .stats-panel { grid-template-columns: 1fr 1fr; gap: 8px; }
  .stat + .stat { border-left: 0; }
  .stat:nth-child(2n) { border-left: 1px solid var(--border); }
  .stats-note { text-align: center; }

  .cta-actions .btn { width: 100%; }
  .hero-cta .btn { width: min(340px, 100%); }

  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }
  .footer-bar { justify-content: center; text-align: center; }
}

@media (max-width: 440px) {
  .container { width: calc(100% - 36px); }
  /* 导航空间收紧：隐藏字标副标，保持品牌单行 */
  .brand-name em { display: none; }
  .nav-actions { gap: 8px; }
  .nav-actions .btn-primary { padding: 9px 14px; font-size: 13.5px; }
  .hero-title { font-size: clamp(31px, 9vw, 38px); }
  .mock-kpis { grid-template-columns: auto 1fr; }
  .mock-kpi:nth-child(3) { display: none; }
  .mm-chips { flex-direction: column; gap: 8px; }
  .fanout { align-items: flex-start; }
  .fan-arrow { display: none; }
  .fan-kids span { white-space: normal; }
  .faq-a-inner p { padding-right: 8px; }
}

/* ============ 18 无障碍与降级 ============ */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
    scroll-behavior: auto !important;
  }
  .marquee { overflow-x: auto; }
  .marquee-track { width: auto; flex-wrap: wrap; }
  .engine-list { flex-wrap: wrap; justify-content: center; }
  .engine-list[aria-hidden="true"] { display: none; }
  .mock-window { transform: none; }
  .float-card { transform: none; }
}