/* ============================================================
   墨易睿 MOIRAI · 官网主页
   视觉基线：DESIGN.md —— 午夜深空中的精密仪表盘
   深紫灰基底 / 科技紫强调 / 直线细分割线 / 微光边缘
   禁：大面积渐变、大圆角、重阴影、装饰插图、多色彩、>200ms 动效
   ============================================================ */

:root {
  --bg:          #23242b;
  --bg-deep:     #1a1b21;
  --surface:     #2b2c35;
  --surface-2:   #323340;
  --surface-3:   #383945;
  --line:        rgba(255, 255, 255, .085);
  --line-strong: rgba(255, 255, 255, .15);
  --accent:      #8b5cf6;
  --accent-br:   #a78bfa;
  --accent-soft: rgba(139, 92, 246, .11);
  --text:        #f2f3f7;
  --muted:       #a9abb9;
  --muted-2:     #7d7f8e;
  --r:           6px;
  --max:         1200px;
  --ease:        150ms ease-out;
  --font: "PingFang SC", "Microsoft YaHei", "Segoe UI", system-ui, -apple-system, "Helvetica Neue", sans-serif;
  --mono: "JetBrains Mono", "SFMono-Regular", Consolas, "Liberation Mono", monospace;
}

*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: 88px; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 15px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

::selection { background: var(--accent); color: #fff; }

a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; }
ul, ol { margin: 0; padding: 0; list-style: none; }
h1, h2, h3, h4, p { margin: 0; }
h1, h2, h3, h4 { font-weight: 600; letter-spacing: -.02em; line-height: 1.32; }

.svg-sprite { position: absolute; width: 0; height: 0; overflow: hidden; }
.ic { width: 18px; height: 18px; flex: none; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: square; stroke-linejoin: miter; }
.ic-sm { width: 14px; height: 14px; }
.mono { font-family: var(--mono); font-variant-numeric: tabular-nums; letter-spacing: 0; }

.container { width: min(100% - 64px, var(--max)); margin-inline: auto; }

.skip-link {
  position: absolute; left: -9999px; top: 0; z-index: 999;
  background: var(--accent); color: #fff; padding: 10px 18px; border-radius: var(--r);
}
.skip-link:focus { left: 16px; top: 16px; }

:focus-visible { outline: 2px solid var(--accent-br); outline-offset: 3px; }

/* ---------- 通用组件 ---------- */
.eyebrow {
  display: flex; align-items: center; gap: 10px; flex-wrap: wrap;
  font-size: 12px; letter-spacing: .04em; color: var(--muted);
  margin-bottom: 20px;
}
.eyebrow .dot { width: 6px; height: 6px; background: var(--accent); flex: none; }
.eyebrow .mono { color: var(--accent-br); font-size: 11px; letter-spacing: .08em; }
.eyebrow-sep { color: var(--muted-2); }

.accent-line { color: var(--accent-br); }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  padding: 13px 22px; border-radius: var(--r); border: 1px solid transparent;
  font-size: 14px; font-weight: 600; white-space: nowrap;
  transition: background var(--ease), border-color var(--ease), color var(--ease);
}
.btn .ic { width: 16px; height: 16px; }
.btn-primary { background: var(--accent); color: #fff; border-color: var(--accent); }
.btn-primary:hover { background: #7c4ce8; border-color: #7c4ce8; }
.btn-ghost { background: transparent; color: var(--text); border-color: var(--line-strong); }
.btn-ghost:hover { background: var(--surface-2); border-color: var(--accent); }
.btn-sm { padding: 9px 15px; font-size: 13px; }

/* ---------- Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(26, 27, 33, .92);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
}
.header-inner { display: flex; align-items: center; gap: 40px; height: 68px; }

.brand { display: inline-flex; align-items: center; gap: 11px; flex: none; }
.brand-mark { position: relative; display: block; width: 26px; height: 26px; }
.brand-mark i {
  position: absolute; left: 0; width: 26px; height: 2px; background: var(--accent);
  transform: skewY(-24deg);
}
.brand-mark i:nth-child(1) { top: 4px; opacity: .55; }
.brand-mark i:nth-child(2) { top: 12px; }
.brand-mark i:nth-child(3) { top: 20px; opacity: .55; }
.brand-text { display: flex; align-items: baseline; gap: 8px; }
.brand-text strong { font-size: 18px; font-weight: 600; letter-spacing: .04em; }
.brand-text em { font-family: var(--mono); font-style: normal; font-size: 10px; letter-spacing: .18em; color: var(--muted-2); }

.main-nav { display: flex; align-items: center; gap: 4px; margin-left: auto; }
.main-nav a {
  position: relative; padding: 8px 14px; font-size: 13.5px; color: var(--muted);
  border-left: 2px solid transparent;
  transition: color var(--ease), background var(--ease), border-color var(--ease);
}
.main-nav a:hover { color: var(--text); background: var(--surface); }
.main-nav a.active { color: var(--accent-br); border-left-color: var(--accent); }
.header-actions { display: flex; align-items: center; gap: 10px; }
.nav-toggle {
  display: none; width: 38px; height: 38px; align-items: center; justify-content: center;
  background: var(--surface); border: 1px solid var(--line-strong); border-radius: var(--r); color: var(--text);
}

/* ---------- Hero ---------- */
.hero { position: relative; overflow: hidden; border-bottom: 1px solid var(--line); background: var(--bg-deep); }
.hero-grid, .cta .hero-grid {
  position: absolute; inset: 0; pointer-events: none;
  background-image:
    repeating-linear-gradient(to right, rgba(255,255,255,.028) 0 1px, transparent 1px 80px),
    repeating-linear-gradient(to bottom, rgba(255,255,255,.028) 0 1px, transparent 1px 80px);
  mask-image: linear-gradient(to bottom, rgba(0,0,0,.9), transparent 92%);
}
.hero-inner {
  position: relative; display: grid; grid-template-columns: 1.02fr 1fr; gap: 56px;
  align-items: center; padding-block: 92px 96px;
}
.hero-copy { min-width: 0; }
.hero h1 { font-size: clamp(38px, 4vw, 58px); line-height: 1.24; margin-bottom: 24px; }
.hero-sub { color: var(--muted); font-size: 15.5px; line-height: 1.9; max-width: 560px; }
.hero-sub strong { color: var(--text); font-weight: 600; }
.hero-cta { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 32px; }
.hero-note {
  display: flex; align-items: center; gap: 7px; margin-top: 18px;
  font-size: 12.5px; color: var(--muted-2);
}
.hero-note .ic { color: var(--accent-br); }
.trust-row {
  display: flex; flex-wrap: wrap; gap: 0; margin-top: 40px;
  border-top: 1px solid var(--line); padding-top: 22px;
}
.trust-row li {
  display: flex; align-items: baseline; gap: 6px; font-size: 12px; color: var(--muted);
  padding-right: 18px; margin-right: 18px; border-right: 1px solid var(--line);
}
.trust-row li:last-child { border-right: 0; margin-right: 0; padding-right: 0; }
.trust-row .mono { color: var(--text); font-size: 12.5px; font-weight: 600; }

/* 产品界面示意 */
.hero-visual { min-width: 0; }
.product-window {
  border: 1px solid var(--line-strong); border-radius: var(--r);
  background: var(--surface); overflow: hidden;
  box-shadow: inset 0 1px 0 rgba(255,255,255,.05), 0 18px 50px rgba(0,0,0,.22);
}
.pw-bar {
  display: flex; align-items: center; gap: 14px; height: 36px; padding: 0 13px;
  background: var(--surface-2); border-bottom: 1px solid var(--line);
}
.pw-dots { display: flex; gap: 5px; }
.pw-dots i { width: 7px; height: 7px; border: 1px solid var(--muted-2); border-radius: 50%; }
.pw-url { font-size: 10.5px; color: var(--muted-2); }
.pw-live { margin-left: auto; display: flex; align-items: center; gap: 5px; font-family: var(--mono); font-size: 9px; letter-spacing: .1em; color: var(--muted-2); }
.pw-live i { width: 5px; height: 5px; background: var(--accent-br); border-radius: 50%; }
.pw-body { display: grid; grid-template-columns: 142px 1fr; min-height: 356px; }
.pw-side { padding: 14px 0; border-right: 1px solid var(--line); background: var(--bg-deep); }
.pw-side-title { padding: 0 13px 10px; font-size: 8.5px; letter-spacing: .14em; color: var(--muted-2); }
.pw-group { padding: 12px 13px 5px; font-size: 9.5px; color: var(--muted-2); }
.pw-item {
  display: block; padding: 5px 13px; font-size: 10.5px; color: var(--muted);
  border-left: 2px solid transparent;
}
.pw-item.active { color: var(--accent-br); border-left-color: var(--accent); background: var(--accent-soft); }
.pw-main { padding: 14px 16px 18px; min-width: 0; }
.pw-topbar { display: flex; align-items: center; justify-content: space-between; font-size: 9px; color: var(--muted-2); }
.pw-avatar { display: grid; place-items: center; width: 20px; height: 20px; border: 1px solid var(--line-strong); border-radius: 50%; font-family: var(--mono); font-size: 9px; color: var(--accent-br); }
.pw-heading { display: flex; align-items: flex-start; justify-content: space-between; margin: 14px 0 14px; }
.pw-heading h3 { font-size: 15px; }
.pw-heading p { font-size: 9.5px; color: var(--muted-2); margin-top: 2px; }
.pw-badge { font-size: 9px; color: var(--muted-2); border: 1px solid var(--line); padding: 2px 7px; border-radius: 3px; }
.pw-metrics { display: grid; grid-template-columns: repeat(4, 1fr); gap: 7px; }
.pw-metric {
  position: relative; padding: 9px 9px 10px; border: 1px solid var(--line); border-radius: 4px;
  background: var(--surface-2); box-shadow: inset 0 1px 0 rgba(255,255,255,.04);
}
.pw-metric span { display: block; font-size: 9px; color: var(--muted-2); }
.pw-metric strong { display: block; font-size: 18px; font-weight: 600; line-height: 1.3; letter-spacing: -.03em; }
.pw-metric small { font-size: 10px; color: var(--muted); }
.pw-spark { position: absolute; right: 8px; bottom: 10px; width: 20px; height: 2px; background: var(--muted-2); }
.pw-spark.up { background: var(--accent); }
.pw-ai {
  display: flex; align-items: center; gap: 9px; margin-top: 10px; padding: 8px 10px;
  border: 1px solid rgba(139,92,246,.35); border-radius: 4px; background: var(--accent-soft);
}
.pw-ai > .ic { width: 15px; height: 15px; color: var(--accent-br); }
.pw-ai div { min-width: 0; }
.pw-ai strong { display: block; font-size: 10px; font-weight: 600; }
.pw-ai span { display: block; font-size: 9px; color: var(--muted); }
.pw-ai-btn { margin-left: auto; flex: none; padding: 3px 8px; font-size: 9px; color: var(--accent-br); background: transparent; border: 1px solid rgba(139,92,246,.45); border-radius: 3px; }
.pw-table { margin-top: 12px; border: 1px solid var(--line); border-radius: 4px; overflow: hidden; }
.pw-tr { display: grid; grid-template-columns: 74px 1fr 66px 62px; gap: 6px; align-items: center; padding: 6px 9px; border-bottom: 1px solid var(--line); font-size: 9.5px; color: var(--muted); }
.pw-tr:last-child { border-bottom: 0; }
.pw-th { font-size: 8.5px; letter-spacing: .06em; color: var(--muted-2); background: var(--surface-2); }
.pw-tr span:nth-child(2) { color: var(--text); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.tag { font-size: 8.5px; text-align: center; padding: 1px 0; border: 1px solid var(--line-strong); border-radius: 3px; color: var(--muted); }
.tag-a { color: var(--accent-br); border-color: rgba(139,92,246,.45); }
.tag-done { color: var(--muted-2); }
.visual-caption { margin-top: 10px; text-align: right; font-size: 10px; color: var(--muted-2); }

/* ---------- Section 通用 ---------- */
.section { padding-block: 96px; border-bottom: 1px solid var(--line); }
.section-alt { background: #202129; }
.section-head { max-width: 760px; margin-bottom: 44px; }
.section-head h2 { font-size: clamp(28px, 3vw, 40px); margin-bottom: 16px; }
.section-head p { color: var(--muted); font-size: 15px; }
.section-head.compact { margin-top: 76px; margin-bottom: 36px; }

/* ---------- 01 痛点与解法 ---------- */
.pain-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 12px; }
.pain-card {
  position: relative; padding: 20px 18px 22px; border: 1px solid var(--line); border-radius: var(--r);
  background: var(--surface); box-shadow: inset 0 1px 0 rgba(255,255,255,.04);
  transition: background var(--ease), border-color var(--ease);
}
.pain-card::before { content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 2px; background: transparent; transition: background var(--ease); }
.pain-card:hover { background: var(--surface-2); border-color: var(--line-strong); }
.pain-card:hover::before { background: var(--accent); }
.pain-card .num { display: block; font-size: 11px; color: var(--accent-br); margin-bottom: 14px; }
.pain-card h3 { font-size: 15px; margin-bottom: 8px; }
.pain-card p { font-size: 12.5px; color: var(--muted); line-height: 1.7; }

.consequence {
  display: grid; grid-template-columns: 150px 1fr; gap: 24px; align-items: center;
  margin-top: 20px; padding: 20px 24px; border: 1px solid var(--line); border-left: 2px solid var(--accent);
  border-radius: var(--r); background: var(--accent-soft);
}
.consequence-label { display: flex; align-items: center; gap: 8px; font-size: 11px; color: var(--accent-br); letter-spacing: .04em; }
.consequence-items { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.consequence-items div { padding-left: 16px; border-left: 1px solid var(--line-strong); }
.consequence-items strong { display: block; font-size: 16px; font-weight: 600; }
.consequence-items span { font-size: 12px; color: var(--muted); }

.pillar-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.pillar-card {
  display: flex; flex-direction: column; padding: 26px 24px;
  border: 1px solid var(--line); border-radius: var(--r); background: var(--surface);
  box-shadow: inset 0 1px 0 rgba(255,255,255,.04);
  transition: background var(--ease), border-color var(--ease);
}
.pillar-card:hover { background: var(--surface-2); border-color: var(--line-strong); }
.pillar-top { display: flex; align-items: center; justify-content: space-between; margin-bottom: 20px; }
.pillar-top .mono { font-size: 11px; color: var(--accent-br); letter-spacing: .06em; }
.pillar-top .ic { width: 22px; height: 22px; color: var(--muted); }
.pillar-card h3 { font-size: 18px; margin-bottom: 12px; }
.pillar-card p { font-size: 13.5px; color: var(--muted); line-height: 1.8; }
.pillar-foot { margin-top: auto; padding-top: 22px; font-size: 11px; color: var(--muted-2); letter-spacing: .06em; }

.flywheel {
  margin-top: 20px; padding: 24px 26px; border: 1px dashed var(--line-strong); border-radius: var(--r);
  background: rgba(255,255,255,.015);
}
.flywheel-title { display: block; font-size: 11px; color: var(--accent-br); letter-spacing: .08em; margin-bottom: 16px; }
.flywheel-steps { display: flex; align-items: center; flex-wrap: wrap; gap: 10px; }
.flywheel-steps span { font-size: 13px; color: var(--text); }
.flywheel-steps i { display: flex; color: var(--accent); }
.flywheel p { margin-top: 14px; font-size: 12.5px; color: var(--muted-2); }

/* ---------- 02 产品能力 ---------- */
.feature-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.feature-card {
  position: relative; padding: 28px 28px 26px; border: 1px solid var(--line); border-radius: var(--r);
  background: var(--surface); box-shadow: inset 0 1px 0 rgba(255,255,255,.04);
  transition: background var(--ease), border-color var(--ease);
}
.feature-card::before { content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 2px; background: transparent; transition: background var(--ease); }
.feature-card:hover { background: var(--surface-2); border-color: var(--line-strong); }
.feature-card:hover::before { background: var(--accent); }
.feature-icon { display: grid; place-items: center; width: 38px; height: 38px; border: 1px solid rgba(139,92,246,.32); border-radius: var(--r); background: var(--accent-soft); color: var(--accent-br); margin-bottom: 20px; }
.feature-icon .ic { width: 20px; height: 20px; }
.feature-card h3 { font-size: 19px; margin-bottom: 10px; }
.feature-card p { font-size: 13.5px; color: var(--muted); line-height: 1.85; }
.feature-card .mono { color: var(--text); font-size: 12.5px; }
.feature-tag { display: inline-block; margin-top: 18px; padding: 3px 9px; border: 1px solid var(--line); border-radius: 3px; font-size: 10.5px; color: var(--muted-2); letter-spacing: .04em; }

.matrix { margin-top: 56px; border: 1px solid var(--line-strong); border-radius: var(--r); background: var(--bg-deep); overflow: hidden; }
.matrix-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 32px; padding: 28px 30px; border-bottom: 1px solid var(--line); }
.matrix-head .eyebrow { margin-bottom: 10px; }
.matrix-head h3 { font-size: 22px; }
.matrix-head > p { max-width: 400px; font-size: 12.5px; color: var(--muted); line-height: 1.8; }
.matrix-grid { display: grid; grid-template-columns: repeat(3, 1fr); }
.matrix-col { padding: 24px 28px 28px; border-right: 1px solid var(--line); }
.matrix-col:last-child { border-right: 0; }
.matrix-col-head { display: flex; align-items: center; gap: 9px; padding-bottom: 16px; margin-bottom: 14px; border-bottom: 1px solid var(--line); }
.matrix-col-head .ic { width: 16px; height: 16px; color: var(--accent-br); }
.matrix-col-head span { font-size: 15px; font-weight: 600; }
.matrix-col-head em { margin-left: auto; font-style: normal; font-size: 10.5px; color: var(--muted-2); }
.matrix-col li { position: relative; padding-left: 14px; font-size: 12.5px; color: var(--muted); line-height: 2.05; }
.matrix-col li::before { content: ""; position: absolute; left: 0; top: 11px; width: 4px; height: 1px; background: var(--accent); }
.matrix-foot { display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); background: var(--surface); }
.stat { padding: 20px 28px; border-right: 1px solid var(--line); }
.stat:last-child { border-right: 0; }
.stat strong { display: block; font-size: 30px; font-weight: 600; color: var(--accent-br); line-height: 1.2; letter-spacing: -.04em; }
.stat span { font-size: 11.5px; color: var(--muted); }
.integration { display: flex; align-items: center; gap: 22px; padding: 20px 30px; flex-wrap: wrap; }
.integration > .mono { font-size: 11px; color: var(--muted-2); letter-spacing: .06em; flex: none; }
.integration-tags { display: flex; flex-wrap: wrap; gap: 8px; }
.integration-tags span { padding: 4px 10px; border: 1px solid var(--line); border-radius: 3px; font-size: 11.5px; color: var(--muted); transition: color var(--ease), border-color var(--ease); }
.integration-tags span:hover { color: var(--accent-br); border-color: rgba(139,92,246,.45); }

.ai-track { display: flex; align-items: center; gap: 12px; margin-bottom: 24px; padding: 12px 18px; border: 1px solid var(--line); border-radius: var(--r); background: var(--surface); }
.ai-track span { font-size: 11px; color: var(--text); }
.ai-track i { flex: 1; height: 1px; background: var(--line-strong); position: relative; }
.ai-track i::after { content: ""; position: absolute; right: 0; top: -2px; width: 5px; height: 5px; background: var(--accent); }
.ai-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 12px; }
.ai-card {
  position: relative; display: flex; flex-direction: column; padding: 22px 18px 20px;
  border: 1px solid var(--line); border-radius: var(--r); background: var(--surface);
  box-shadow: inset 0 1px 0 rgba(255,255,255,.04);
  transition: background var(--ease), border-color var(--ease);
}
.ai-card::before { content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 2px; background: transparent; transition: background var(--ease); }
.ai-card:hover { background: var(--surface-2); border-color: var(--line-strong); }
.ai-card:hover::before { background: var(--accent); }
.ai-card > .num { font-size: 11px; color: var(--accent-br); }
.ai-icon { margin: 16px 0 14px; color: var(--accent-br); }
.ai-icon .ic { width: 21px; height: 21px; }
.ai-card h3 { font-size: 15px; margin-bottom: 10px; }
.ai-card p { font-size: 12.5px; color: var(--muted); line-height: 1.8; }
.ai-card p .mono { color: var(--text); font-size: 11.5px; }
.ai-meta { display: block; margin-top: auto; padding-top: 18px; font-size: 10.5px; color: var(--muted-2); }
.ai-outcomes { display: flex; align-items: center; gap: 24px; margin-top: 20px; padding: 18px 24px; border: 1px solid var(--line); border-left: 2px solid var(--accent); border-radius: var(--r); background: var(--accent-soft); flex-wrap: wrap; }
.ai-outcomes > .mono { font-size: 11px; color: var(--accent-br); letter-spacing: .06em; }
.ai-outcomes div { display: flex; flex-wrap: wrap; gap: 10px; }
.ai-outcomes div span { padding: 4px 12px; border: 1px solid var(--line-strong); border-radius: 3px; font-size: 12.5px; color: var(--text); }

/* ---------- 03 走进产品 · 功能地图 ---------- */
.tour-path {
  display: flex; align-items: center; gap: 24px; flex-wrap: wrap;
  margin-bottom: 20px; padding: 16px 22px;
  border: 1px solid var(--line-strong); border-left: 2px solid var(--accent);
  border-radius: var(--r); background: var(--surface);
}
.tour-path-label { flex: none; font-size: 11px; color: var(--accent-br); letter-spacing: .06em; }
.tour-path ol { display: flex; align-items: center; flex-wrap: wrap; gap: 9px; }
.tour-path li { display: inline-flex; align-items: center; gap: 8px; padding: 4px 11px; border: 1px solid var(--line); border-radius: 3px; font-size: 12.5px; color: var(--text); }
.tour-path li b { font-size: 10px; font-weight: 600; color: var(--accent-br); }

.tour-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.tour-card {
  display: flex; flex-direction: column; min-width: 0; padding: 26px 28px 24px;
  border: 1px solid var(--line-strong); border-radius: var(--r);
  background: var(--surface); box-shadow: inset 0 1px 0 rgba(255,255,255,.04);
}
.tour-head { display: flex; align-items: center; gap: 12px; padding-bottom: 18px; border-bottom: 1px solid var(--line); }
.tour-num { font-size: 10.5px; color: var(--accent-br); }
.tour-head > .ic { width: 20px; height: 20px; color: var(--accent-br); }
.tour-title { display: flex; align-items: baseline; gap: 10px; min-width: 0; }
.tour-title h3 { font-size: 17px; }
.tour-title .mono { font-size: 9.5px; letter-spacing: .1em; color: var(--muted-2); }
.tour-badge { margin-left: auto; flex: none; padding: 3px 9px; border: 1px solid rgba(139,92,246,.4); border-radius: 3px; font-size: 10px; color: var(--accent-br); }
.tour-desc { margin: 16px 0 8px; font-size: 13px; color: var(--muted); line-height: 1.85; }
.tour-rows { margin-top: 8px; }
.tour-row { display: grid; grid-template-columns: 88px 1fr; gap: 14px; padding: 10px 0; border-bottom: 1px solid var(--line); }
.tour-row:last-child { border-bottom: 0; }
.tour-row > .mono { padding-top: 2px; font-size: 11px; color: var(--accent-br); }
.tour-row > div { min-width: 0; }
.tour-row strong { display: block; font-size: 12.5px; font-weight: 600; margin-bottom: 2px; }
.tour-row p { font-size: 12px; color: var(--muted); line-height: 1.75; }
.tour-foot { margin-top: auto; padding-top: 18px; font-size: 11.5px; color: var(--muted-2); }
.tour-foot .mono { margin-right: 8px; font-size: 10.5px; color: var(--accent-br); }

.tour-system {
  display: grid; grid-template-columns: 1.25fr 1fr; gap: 32px; align-items: center;
  margin-top: 20px; padding: 24px 28px;
  border: 1px solid var(--line); border-left: 2px solid var(--accent);
  border-radius: var(--r); background: var(--accent-soft);
}
.tour-system > div { min-width: 0; }
.tour-system > div > .mono { display: block; margin-bottom: 10px; font-size: 10.5px; letter-spacing: .08em; color: var(--accent-br); }
.tour-system h4 { font-size: 16px; margin-bottom: 8px; }
.tour-system p { font-size: 12.5px; color: var(--muted); line-height: 1.85; }
.tour-system-tags { display: flex; flex-wrap: wrap; gap: 8px; }
.tour-system-tags span { padding: 4px 10px; border: 1px solid var(--line-strong); border-radius: 3px; font-size: 11.5px; color: var(--text); }

.tour-cta {
  display: flex; align-items: center; justify-content: space-between; gap: 20px; flex-wrap: wrap;
  margin-top: 20px; padding: 18px 24px;
  border: 1px solid var(--line); border-radius: var(--r); background: var(--surface);
}
.tour-cta p { font-size: 13.5px; color: var(--muted); }
.tour-cta strong { color: var(--text); font-weight: 600; }

@media (max-width: 860px) {
  .tour-grid, .tour-system { grid-template-columns: 1fr; }
  .tour-system { gap: 20px; }
  .tour-path { gap: 12px; }
}
@media (max-width: 620px) {
  .tour-card { padding: 22px 20px; }
  .tour-title .mono, .tour-badge { display: none; }
  .tour-row { grid-template-columns: 1fr; gap: 4px; }
  .tour-path li { font-size: 12px; }
  .tour-system, .tour-cta { padding: 20px; }
}

/* ---------- 04 案例 ---------- */
.case-card { border: 1px solid var(--line-strong); border-radius: var(--r); background: var(--bg-deep); overflow: hidden; }
.case-head { display: flex; align-items: center; justify-content: space-between; gap: 24px; padding: 28px 32px; border-bottom: 1px solid var(--line); background: var(--surface); }
.case-badge { display: inline-block; margin-bottom: 12px; font-size: 10.5px; letter-spacing: .1em; color: var(--accent-br); }
.case-head h3 { font-size: 23px; margin-bottom: 8px; }
.case-head p { font-size: 13px; color: var(--muted); }
.case-mark { flex: none; text-align: right; font-size: 22px; font-weight: 600; line-height: 1.2; letter-spacing: .06em; color: rgba(167,139,250,.22); }
.case-body { display: grid; grid-template-columns: 1fr 1.18fr 1fr; }
.case-col { padding: 28px 30px 32px; border-right: 1px solid var(--line); }
.case-col:last-child { border-right: 0; }
.case-col h4 { display: flex; align-items: center; gap: 10px; font-size: 14px; margin-bottom: 22px; }
.case-col h4 .mono { display: grid; place-items: center; width: 22px; height: 22px; border: 1px solid rgba(139,92,246,.4); border-radius: 3px; font-size: 10px; color: var(--accent-br); }
.muted-list li { display: flex; gap: 9px; padding: 9px 0; border-bottom: 1px solid var(--line); }
.muted-list li:last-child { border-bottom: 0; }
.muted-list .ic { margin-top: 4px; color: var(--muted-2); }
.muted-list strong { display: block; font-size: 13px; font-weight: 600; }
.muted-list span span, .muted-list li > span { font-size: 12px; color: var(--muted); line-height: 1.7; }
.case-result { margin-top: 20px; padding: 10px 12px; border: 1px solid var(--line); border-left: 2px solid var(--accent); border-radius: 3px; font-size: 11.5px; color: var(--muted); background: var(--accent-soft); }
.step-list li { display: flex; gap: 14px; padding-bottom: 20px; position: relative; }
.step-list li:not(:last-child)::before { content: ""; position: absolute; left: 15px; top: 30px; bottom: 0; width: 1px; background: var(--line-strong); }
.step-list li > .mono { display: grid; place-items: center; flex: none; width: 31px; height: 31px; border: 1px solid rgba(139,92,246,.4); border-radius: var(--r); font-size: 11px; color: var(--accent-br); background: var(--accent-soft); }
.step-list strong { display: block; font-size: 13.5px; font-weight: 600; margin: 3px 0 4px; }
.step-list p { font-size: 12px; color: var(--muted); line-height: 1.75; }
.ability-list li { position: relative; padding: 9px 0 9px 20px; border-bottom: 1px solid var(--line); font-size: 13px; }
.ability-list li::before { content: ""; position: absolute; left: 0; top: 18px; width: 8px; height: 2px; background: var(--accent); }
.case-quote { display: flex; gap: 10px; margin-top: 24px; padding: 16px; border: 1px solid var(--line); border-radius: var(--r); background: var(--surface); }
.case-quote .ic { color: var(--accent-br); }
.case-quote p { font-size: 12.5px; color: var(--muted); line-height: 1.8; }

.value-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin-top: 20px; }
.value-item { display: flex; gap: 12px; padding: 20px 18px; border: 1px solid var(--line); border-radius: var(--r); background: var(--surface); transition: background var(--ease); }
.value-item:hover { background: var(--surface-2); }
.value-item .ic { color: var(--accent-br); margin-top: 2px; }
.value-item strong { display: block; font-size: 14px; margin-bottom: 4px; }
.value-item span { font-size: 12px; color: var(--muted); line-height: 1.7; }
.audience { display: flex; align-items: center; gap: 24px; margin-top: 20px; padding: 18px 24px; border: 1px solid var(--line); border-left: 2px solid var(--accent); border-radius: var(--r); background: var(--accent-soft); flex-wrap: wrap; }
.audience > .mono { font-size: 11px; color: var(--accent-br); letter-spacing: .06em; }
.audience p { font-size: 13.5px; color: var(--muted); }
.audience strong { color: var(--text); }

/* ---------- 05 FDE ---------- */
.fde-grid { display: grid; grid-template-columns: 1.35fr 1fr; gap: 20px; }
.fde-label { display: block; font-size: 11px; letter-spacing: .08em; color: var(--accent-br); margin-bottom: 16px; }
.service-card {
  display: flex; align-items: flex-start; gap: 16px; position: relative;
  padding: 22px 24px; margin-bottom: 12px; border: 1px solid var(--line); border-radius: var(--r);
  background: var(--surface); box-shadow: inset 0 1px 0 rgba(255,255,255,.04);
  transition: background var(--ease), border-color var(--ease);
}
.service-card::before { content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 2px; background: transparent; transition: background var(--ease); }
.service-card:hover { background: var(--surface-2); border-color: var(--line-strong); }
.service-card:hover::before { background: var(--accent); }
.service-card > .num { font-size: 11px; color: var(--accent-br); padding-top: 4px; }
.service-card h3 { font-size: 16px; margin-bottom: 6px; }
.service-card p { font-size: 13px; color: var(--muted); line-height: 1.75; }
.service-card > .ic { margin-left: auto; color: var(--muted-2); width: 20px; height: 20px; }

.fde-side { display: flex; flex-direction: column; gap: 16px; }
.deliverable { border: 1px solid var(--line-strong); border-radius: var(--r); background: var(--bg-deep); padding: 22px 24px; }
.deliverable-item { display: flex; gap: 12px; padding: 12px 0; border-bottom: 1px solid var(--line); }
.deliverable-item:last-child { border-bottom: 0; padding-bottom: 0; }
.deliverable-item:first-child { padding-top: 0; }
.deliverable-item .ic { color: var(--accent-br); margin-top: 3px; }
.deliverable-item strong { display: block; font-size: 14px; }
.deliverable-item span { font-size: 12px; color: var(--muted); }
.ingest { flex: 1; padding: 22px 24px; border: 1px solid var(--line); border-radius: var(--r); background: var(--surface); }
.ingest > .mono { font-size: 11px; color: var(--muted-2); letter-spacing: .06em; }
.ingest p { margin: 10px 0 18px; font-size: 12.5px; color: var(--muted); line-height: 1.9; }
.ingest-flow { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; padding-top: 16px; border-top: 1px solid var(--line); }
.ingest-flow span { padding: 4px 8px; border: 1px solid var(--line); border-radius: 3px; font-size: 10.5px; color: var(--text); }
.ingest-flow .ic { color: var(--accent); }
.ingest-flow span:last-child { color: var(--accent-br); border-color: rgba(139,92,246,.45); }
.fde-closing { display: flex; align-items: flex-start; gap: 14px; margin-top: 24px; padding: 22px 26px; border: 1px solid var(--line); border-left: 2px solid var(--accent); border-radius: var(--r); background: var(--accent-soft); }
.fde-closing .ic { color: var(--accent-br); margin-top: 3px; }
.fde-closing p { font-size: 13.5px; color: var(--muted); line-height: 1.85; }
.fde-closing strong { color: var(--text); }

/* ---------- CTA ---------- */
.cta { position: relative; overflow: hidden; text-align: center; border-bottom: 1px solid var(--line); background: var(--bg-deep); }
.cta-inner { position: relative; padding-block: 100px 104px; }
.cta .eyebrow { justify-content: center; }
.cta h2 { font-size: clamp(34px, 4vw, 56px); line-height: 1.28; margin-bottom: 20px; }
.cta p { color: var(--muted); font-size: 15px; line-height: 1.9; }
.cta .hero-cta { justify-content: center; }
.cta .hero-note { justify-content: center; }
.cta p.cta-contact { margin-top: 14px; font-size: 12.5px; color: var(--muted-2); line-height: 1.8; }
.cta p.cta-contact a { color: var(--accent-br); text-decoration: none; border-bottom: 1px solid rgba(167, 139, 250, .35); padding-bottom: 2px; transition: border-color var(--ease); }
.cta p.cta-contact a:hover { border-bottom-color: var(--accent-br); }

/* ---------- Footer ---------- */
.site-footer { background: #181920; }
.footer-top { display: grid; grid-template-columns: 300px 1fr; gap: 60px; padding-block: 56px 48px; }
.footer-brand p { margin-top: 18px; font-size: 13.5px; color: var(--muted); }
.footer-sub { display: block; margin-top: 8px; font-size: 10.5px; color: var(--muted-2); letter-spacing: .04em; }
.footer-contact { margin-top: 22px; padding-top: 18px; border-top: 1px solid var(--line); }
.footer-contact-label { display: block; font-size: 10.5px; color: var(--muted-2); letter-spacing: .06em; }
.footer-email { display: inline-flex; align-items: center; gap: 8px; margin-top: 10px; font-size: 14px; font-weight: 600; color: var(--accent-br); text-decoration: none; transition: color var(--ease); }
.footer-email .ic { width: 15px; height: 15px; }
.footer-email:hover { color: #c4b5fd; text-decoration: underline; text-underline-offset: 4px; }
.footer-contact-note { display: block; margin-top: 8px; font-size: 11px; color: var(--muted-2); }
.footer-links { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.footer-links h4 { font-size: 12.5px; margin-bottom: 14px; color: var(--text); }
.footer-links a { display: block; padding: 4px 0; font-size: 12.5px; color: var(--muted); transition: color var(--ease); }
.footer-links a:hover { color: var(--accent-br); }
.footer-bottom { display: flex; justify-content: space-between; gap: 16px; padding-block: 18px; border-top: 1px solid var(--line); font-size: 11.5px; color: var(--muted-2); flex-wrap: wrap; }
.footer-bottom .mono { font-size: 10.5px; letter-spacing: .08em; }

/* ---------- 语义容器 / 状态钩子 ---------- */
.solution-block, .ai-block, .fde-services, .case-col-main { min-width: 0; }
.check-list { display: block; }
.pw-spark.flat { background: var(--muted-2); }

/* ---------- 滚动入场（≤200ms） ---------- */
.reveal { opacity: 0; transform: translateY(10px); transition: opacity 180ms ease-out, transform 180ms ease-out; }
.reveal.is-visible { opacity: 1; transform: none; }

/* ---------- 响应式 ---------- */
@media (max-width: 1120px) {
  .hero-inner { grid-template-columns: 1fr; gap: 56px; padding-block: 72px 80px; }
  .hero-copy { max-width: 720px; }
  .hero-visual { max-width: 760px; }
  .pain-grid { grid-template-columns: repeat(3, 1fr); }
  .ai-grid { grid-template-columns: repeat(3, 1fr); }
  .case-body { grid-template-columns: 1fr 1fr; }
  .case-col:nth-child(2) { border-right: 0; }
  .case-col:last-child { grid-column: 1 / -1; border-top: 1px solid var(--line); }
  .value-grid { grid-template-columns: repeat(2, 1fr); }
  .fde-grid { grid-template-columns: 1fr; }
  .footer-top { grid-template-columns: 1fr; gap: 40px; }
}

@media (max-width: 860px) {
  .container { width: min(100% - 40px, var(--max)); }
  .main-nav {
    position: absolute; top: 68px; left: 0; right: 0; display: none; flex-direction: column;
    align-items: stretch; gap: 0; padding: 12px 20px 20px;
    background: var(--bg-deep); border-bottom: 1px solid var(--line-strong);
  }
  .main-nav.open { display: flex; }
  .main-nav a { padding: 12px 14px; border-left: 2px solid transparent; border-bottom: 1px solid var(--line); font-size: 14px; }
  .nav-toggle { display: inline-flex; }
  .header-actions .btn-sm { display: none; }
  .section { padding-block: 72px; }
  .section-head.compact { margin-top: 56px; }
  .pillar-grid, .matrix-grid, .feature-grid { grid-template-columns: 1fr 1fr; }
  .matrix-col:nth-child(2) { border-right: 0; }
  .matrix-col:last-child { grid-column: 1 / -1; border-top: 1px solid var(--line); }
  .matrix-head { flex-direction: column; align-items: flex-start; gap: 14px; }
  .consequence { grid-template-columns: 1fr; gap: 16px; }
  .ai-track { overflow: hidden; }
  .footer-links { grid-template-columns: repeat(2, 1fr); gap: 28px; }
}

@media (max-width: 620px) {
  .container { width: min(100% - 32px, var(--max)); }
  .hero-inner { padding-block: 56px 64px; }
  .hero h1 { font-size: 34px; }
  .hero-sub { font-size: 14px; }
  .trust-row li { border-right: 0; padding-right: 0; margin-right: 16px; }
  .section { padding-block: 60px; }
  .section-head h2 { font-size: 26px; }
  .pain-grid, .pillar-grid, .feature-grid, .ai-grid, .value-grid, .matrix-grid, .matrix-foot, .consequence-items { grid-template-columns: 1fr; }
  .matrix-col { border-right: 0; border-bottom: 1px solid var(--line); }
  .matrix-col:last-child { border-bottom: 0; }
  .stat { border-right: 0; border-bottom: 1px solid var(--line); }
  .stat:last-child { border-bottom: 0; }
  .case-body { grid-template-columns: 1fr; }
  .case-col { border-right: 0; border-bottom: 1px solid var(--line); }
  .case-col:nth-child(2), .case-col:last-child { grid-column: auto; border-top: 0; }
  .case-col:last-child { border-bottom: 0; }
  .case-head { flex-direction: column; align-items: flex-start; }
  .case-mark { display: none; }
  .pw-body { grid-template-columns: 1fr; }
  .pw-side { display: none; }
  .pw-metrics { grid-template-columns: repeat(2, 1fr); }
  .pw-tr { grid-template-columns: 60px 1fr 60px; }
  .pw-tr span:nth-child(3) { display: none; }
  .ai-track { flex-wrap: wrap; }
  .ai-track i { min-width: 16px; }
  .cta-inner { padding-block: 72px; }
  .footer-links { grid-template-columns: 1fr 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
  .reveal { opacity: 1; transform: none; }
}

/* ---------- 移动菜单内的主转化入口 ---------- */
.main-nav .nav-cta { display: none; }
@media (max-width: 860px) {
  .main-nav .nav-cta {
    display: flex; align-items: center; justify-content: space-between;
    margin-top: 14px; padding: 11px 14px;
    border: 1px solid var(--accent); border-left-width: 2px; border-radius: var(--r);
    background: var(--accent); color: #fff; font-weight: 600;
  }
  .main-nav .nav-cta:hover { background: #7c4ce8; color: #fff; }
}

/* ---------- 视图模式（手机浏览器自动切换） ---------- */
.footer-bottom { align-items: center; }
.view-switch { display: inline-flex; align-items: center; gap: 6px; }
.view-switch-label { font-size: 10px; letter-spacing: .1em; margin-right: 2px; }
.view-switch button {
  min-height: 30px; padding: 5px 11px; font: inherit; font-size: 11.5px;
  color: var(--muted-2); background: transparent; cursor: pointer;
  border: 1px solid var(--line); border-radius: var(--r);
  transition: color var(--ease), border-color var(--ease), background var(--ease);
}
.view-switch button:hover { color: var(--text); border-color: var(--line-strong); }
.view-switch button[aria-pressed="true"] {
  color: var(--accent-br); border-color: var(--accent); background: var(--accent-soft);
}

/* 手机模式增强：触控目标 / 正文可读性 / 安全区 / 触屏去悬停态 */
.view-mobile { -webkit-tap-highlight-color: rgba(139, 92, 246, .18); }
.view-mobile .nav-toggle { width: 44px; height: 44px; }
.view-mobile .btn { min-height: 46px; padding-inline: 18px; }
.view-mobile .btn-sm { min-height: 40px; }
.view-mobile .main-nav a { min-height: 46px; display: flex; align-items: center; }
.view-mobile .hero-sub, .view-mobile .tour-desc { line-height: 1.9; }
.view-mobile .site-footer { padding-bottom: env(safe-area-inset-bottom); }
.view-mobile .view-switch button { min-height: 36px; }
@media (hover: none) {
  .view-mobile .btn-primary:hover { background: var(--accent); border-color: var(--accent); }
  .view-mobile .btn-ghost:hover { background: transparent; border-color: var(--line-strong); }
  .view-mobile .main-nav a:hover { background: transparent; }
}
@media (max-width: 620px) {
  .footer-bottom { flex-direction: column; align-items: flex-start; gap: 12px; }
}