/* ============================================================
   法求 | AI法律智能体 — 官网共享样式
   品牌：纸白 #F8FBFC / 深墨蓝 #102A43 / 智能青绿 #0B9C90
   字体：宋体显示字（权威）+ 黑体正文（易读）
   ============================================================ */

:root {
  --bg:        #F8FBFC;
  --surface:   #FFFFFF;
  --fg:        #102A43;
  --fg-strong: #0B1F33;
  --muted:     #52697D;
  --faint:     #7B8EA0;
  --border:    #DCE6EC;
  --border-strong: #C7D3DF;
  --accent:    #0B9C90;
  --accent-deep: #0B8F83;
  --accent-bright: #20D0BF;
  --accent-ink: #086B63;
  --accent-wash: #E9F7F5;
  --ink-band:  #102A43;
  --ink-band-deep: #0B1F33;
  --success:   #1A9A5B;
  --warn:      #B7791F;
  --danger:    #C0392B;

  --font-display: 'Noto Serif SC', 'Source Han Serif SC', 'Songti SC', 'SimSun', serif;
  --font-body: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei UI', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  --radius: 12px;
  --radius-sm: 8px;
  --container: 1180px;
  --shadow-card: 0 1px 2px rgba(16, 42, 67, 0.04), 0 8px 24px rgba(16, 42, 67, 0.06);
  --shadow-pop: 0 12px 40px rgba(16, 42, 67, 0.14);
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

::selection { background: rgba(11, 156, 144, 0.18); }

img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; }

.container { max-width: var(--container); margin: 0 auto; padding: 0 32px; }

/* ---------- 排版 ---------- */
h1, h2, h3, .display {
  font-family: var(--font-display);
  font-weight: 700;
  color: var(--fg-strong);
  line-height: 1.25;
  letter-spacing: -0.01em;
  text-wrap: balance;
}

.kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--accent-ink);
}
.kicker::before {
  content: '';
  width: 22px; height: 1.5px;
  background: var(--accent);
}

.lead { font-size: 18px; color: var(--muted); max-width: 62ch; text-wrap: pretty; }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  padding: 13px 26px;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  font-size: 15.5px;
  font-weight: 600;
  letter-spacing: 0.02em;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease, border-color 0.15s ease;
  white-space: nowrap;
}
.btn:active { transform: translateY(1px); }
.btn-primary {
  background: linear-gradient(135deg, var(--accent-bright), var(--accent-deep));
  color: #FFFFFF;
  box-shadow: 0 4px 14px rgba(11, 156, 144, 0.28);
}
.btn-primary:hover { box-shadow: 0 6px 20px rgba(11, 156, 144, 0.38); }
.btn-secondary {
  background: var(--surface);
  border-color: var(--border-strong);
  color: var(--fg-strong);
}
.btn-secondary:hover { border-color: var(--accent); color: var(--accent-ink); }
.btn-ghost { color: var(--fg); padding: 13px 16px; }
.btn-ghost:hover { color: var(--accent-ink); }
.btn-lg { padding: 16px 34px; font-size: 17px; border-radius: 10px; }
.btn .os-ico { width: 18px; height: 18px; fill: currentColor; }

/* ---------- 顶部导航 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(248, 251, 252, 0.86);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
}
.nav {
  display: flex;
  align-items: center;
  gap: 36px;
  height: 76px;
}
.nav-logo { display: flex; align-items: center; gap: 12px; flex-shrink: 0; }

/* ---------- 品牌组合标（宽幅 logo 缩小不可读，改用图标 + 文字排版） ---------- */
.brand-mark { height: 42px; width: 42px; }
.brand-name {
  font-family: var(--font-display);
  font-size: 28px;
  font-weight: 900;
  color: var(--fg-strong);
  line-height: 1;
  letter-spacing: 0.03em;
}
.brand-divider { width: 1px; height: 28px; background: var(--border-strong); }
.brand-sub {
  font-size: 14px;
  font-weight: 600;
  color: var(--muted);
  letter-spacing: 0.05em;
  line-height: 1.2;
}
.brand-sub em { font-style: normal; color: var(--accent-ink); }
.nav-links {
  display: flex;
  align-items: center;
  gap: 6px;
  list-style: none;
  flex: 1;
}
.nav-links a {
  display: block;
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-weight: 500;
  color: var(--muted);
  transition: color 0.15s, background 0.15s;
}
.nav-links a:hover { color: var(--fg-strong); background: rgba(16, 42, 67, 0.05); }
.nav-links a.active { color: var(--accent-ink); font-weight: 600; }
.nav-cta { display: flex; align-items: center; gap: 10px; }
.nav-cta .btn { padding: 10px 20px; font-size: 14.5px; }

.nav-burger {
  display: none;
  background: none;
  border: 0;
  width: 42px; height: 42px;
  border-radius: var(--radius-sm);
  align-items: center;
  justify-content: center;
}
.nav-burger span, .nav-burger span::before, .nav-burger span::after {
  content: '';
  display: block;
  width: 20px; height: 2px;
  background: var(--fg);
  border-radius: 2px;
  position: relative;
  transition: transform 0.2s;
}
.nav-burger span::before { position: absolute; top: -6px; }
.nav-burger span::after { position: absolute; top: 6px; }

.mobile-drawer {
  display: none;
  border-top: 1px solid var(--border);
  background: var(--surface);
  padding: 12px 24px 24px;
}
.mobile-drawer.open { display: block; }
.mobile-drawer a {
  display: block;
  padding: 13px 8px;
  font-size: 16px;
  font-weight: 500;
  border-bottom: 1px solid var(--border);
  color: var(--fg);
}
.mobile-drawer a.active { color: var(--accent-ink); }
.mobile-drawer .btn { margin-top: 16px; width: 100%; }

/* ---------- Hero（首页） ---------- */
.hero {
  position: relative;
  padding: 96px 0 88px;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  top: -220px; right: -180px;
  width: 640px; height: 640px;
  background: radial-gradient(closest-side, rgba(32, 208, 191, 0.13), transparent 70%);
  pointer-events: none;
}
.hero-inner { position: relative; max-width: 820px; }
.hero h1 {
  font-size: clamp(40px, 5.2vw, 62px);
  letter-spacing: -0.015em;
  margin: 22px 0 20px;
}
.hero h1 em {
  font-style: normal;
  color: var(--accent-ink);
  background: linear-gradient(transparent 68%, rgba(32, 208, 191, 0.28) 68%);
}
.hero-slogan {
  font-family: var(--font-display);
  font-size: clamp(19px, 2.1vw, 26px);
  font-weight: 600;
  line-height: 1.3;
  letter-spacing: -0.01em;
  color: var(--fg-strong);
  margin: -6px 0 22px;
}
.hero-slogan strong { font-weight: 700; color: var(--accent-ink); white-space: nowrap; }
.hero .lead { font-size: 19px; margin-bottom: 38px; }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; align-items: center; }
.hero-note { margin-top: 18px; font-size: 13.5px; color: var(--faint); }
.hero-facts {
  display: flex;
  gap: 0;
  margin-top: 64px;
  border-top: 1px solid var(--border);
}
.hero-facts .fact {
  padding: 22px 36px 0 0;
  margin-right: 36px;
  border-right: 1px solid var(--border);
}
.hero-facts .fact:last-child { border-right: 0; margin-right: 0; }
.fact .num {
  font-family: var(--font-display);
  font-size: 34px;
  font-weight: 700;
  color: var(--fg-strong);
  line-height: 1.1;
  font-variant-numeric: tabular-nums;
}
.fact .num sup { font-size: 16px; color: var(--accent-ink); margin-left: 2px; }
.fact .label { font-size: 13.5px; color: var(--muted); margin-top: 6px; }

/* ---------- 区块外壳 ---------- */
.section { padding: 88px 0; scroll-margin-top: 72px; }
.section-alt { background: var(--surface); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.section-head { max-width: 720px; margin-bottom: 52px; }
.section-head h2 { font-size: clamp(28px, 3.4vw, 40px); margin: 18px 0 16px; }

/* ---------- 卡片 ---------- */
.card-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.card-grid.cols-3 { grid-template-columns: repeat(3, 1fr); }
.card-grid.cols-4 { grid-template-columns: repeat(4, 1fr); }
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  box-shadow: var(--shadow-card);
}
a.card { transition: border-color 0.15s, transform 0.18s, box-shadow 0.18s; }
a.card:hover { border-color: var(--accent); transform: translateY(-3px); box-shadow: var(--shadow-pop); }
.card h3 { font-size: 21px; margin: 16px 0 10px; }
.card p { font-size: 15px; color: var(--muted); }
.card .card-more { display: inline-block; margin-top: 18px; font-size: 14px; font-weight: 600; color: var(--accent-ink); }

.card-ico {
  width: 44px; height: 44px;
  border-radius: 10px;
  background: var(--accent-wash);
  display: grid;
  place-items: center;
}
.card-ico svg { width: 22px; height: 22px; stroke: var(--accent-ink); fill: none; stroke-width: 1.7; stroke-linecap: round; stroke-linejoin: round; }

.card-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 16px; }
/* 要素勾选列表（思维导图要素等） */
.tick-list { list-style: none; margin: 8px 0 0; display: grid; gap: 9px; }
.tick-list li { position: relative; padding-left: 20px; font-size: 14.5px; color: var(--muted); line-height: 1.55; }
.tick-list li::before { content: ""; position: absolute; left: 0; top: 8px; width: 7px; height: 7px; border-radius: 2px; background: var(--accent); }
.tick-list li strong { color: var(--fg-strong); font-weight: 600; }
.tag {
  font-size: 12.5px;
  padding: 4px 11px;
  border-radius: 999px;
  border: 1px solid var(--border);
  color: var(--muted);
  background: var(--bg);
}

/* ---------- 深墨蓝色带（技术区） ---------- */
.ink-band {
  background: linear-gradient(180deg, var(--ink-band), var(--ink-band-deep));
  color: #E6EEF4;
  padding: 88px 0;
  position: relative;
  overflow: hidden;
}
.ink-band::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(255, 255, 255, 0.055) 1px, transparent 1.5px);
  background-size: 28px 28px;
  pointer-events: none;
}
.ink-band .container { position: relative; }
.ink-band .kicker { color: var(--accent-bright); }
.ink-band .kicker::before { background: var(--accent-bright); }
.ink-band h2, .ink-band h3 { color: #FFFFFF; }
.ink-band .lead, .ink-band p { color: #9FB3C4; }
.ink-band .tech-card {
  background: rgba(255, 255, 255, 0.045);
  border: 1px solid rgba(255, 255, 255, 0.09);
  border-radius: var(--radius);
  padding: 36px;
}
.ink-band .tech-card h3 { font-size: 23px; margin-bottom: 12px; }
.ink-band .tech-card ul { list-style: none; margin-top: 20px; }
.ink-band .tech-card li {
  padding: 10px 0 10px 24px;
  position: relative;
  font-size: 14.5px;
  color: #C3D2DE;
  border-top: 1px solid rgba(255, 255, 255, 0.07);
}
.ink-band .tech-card li::before {
  content: '';
  position: absolute;
  left: 2px; top: 19px;
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--accent-bright);
}
.ink-band .tech-tagline {
  margin-top: 22px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent-bright);
}

/* ---------- 工作流演示 ---------- */
/* 业务领域切换（民事 / 刑事） */
.case-toggle {
  display: inline-flex;
  gap: 4px;
  padding: 4px;
  margin-bottom: 26px;
  background: var(--surface-2, #EEF4F5);
  border: 1px solid var(--border);
  border-radius: 12px;
}
.case-btn {
  background: none;
  border: 0;
  padding: 9px 22px;
  border-radius: 9px;
  font-size: 15px;
  font-weight: 600;
  color: var(--muted);
  letter-spacing: 0.01em;
  cursor: pointer;
  transition: background 0.18s, color 0.18s;
}
.case-btn:hover { color: var(--fg-strong); }
.case-btn.active {
  background: var(--fg-strong);
  color: #fff;
  box-shadow: 0 2px 8px rgba(16, 42, 67, 0.18);
}
.wf-view { display: none; }
.wf-view.active { display: block; }

.flow-tabs {
  display: flex;
  gap: 4px;
  overflow-x: auto;
  border-bottom: 1px solid var(--border-strong);
  scrollbar-width: none;
}
.flow-tabs::-webkit-scrollbar { display: none; }
.flow-tab {
  background: none;
  border: 0;
  border-bottom: 2.5px solid transparent;
  padding: 12px 18px 14px;
  font-size: 15px;
  font-weight: 600;
  color: var(--muted);
  white-space: nowrap;
  margin-bottom: -1px;
  transition: color 0.15s;
}
.flow-tab .idx {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--faint);
  display: block;
  letter-spacing: 0.14em;
  margin-bottom: 2px;
}
.flow-tab:hover { color: var(--fg-strong); }
.flow-tab.active { color: var(--accent-ink); border-bottom-color: var(--accent); }
.flow-tab.active .idx { color: var(--accent); }

.flow-panel { display: none; padding-top: 36px; }
.flow-panel.active { display: block; }
.flow-nodes { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
.flow-node {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px 26px;
}
.flow-node .trigger {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: 12.5px;
  font-weight: 600;
  color: var(--accent-ink);
  background: var(--accent-wash);
  padding: 4px 12px;
  border-radius: 999px;
  margin-bottom: 12px;
}
.flow-node .trigger::before { content: '📌'; font-size: 11px; }
.flow-node h4 { font-family: var(--font-display); font-size: 18px; color: var(--fg-strong); margin-bottom: 8px; }
.flow-node .meta {
  font-size: 13px;
  color: var(--faint);
  margin-bottom: 12px;
}
.flow-node .meta strong { color: var(--warn); font-weight: 600; }
.flow-node .docs { display: flex; flex-wrap: wrap; gap: 7px; }
.flow-node .docs span {
  font-size: 12.5px;
  padding: 3px 10px;
  border-radius: 6px;
  background: var(--bg);
  border: 1px solid var(--border);
  color: var(--muted);
}
.flow-node .docs .ai {
  border-color: rgba(11, 156, 144, 0.35);
  color: var(--accent-ink);
  background: var(--accent-wash);
}
.flow-foot { margin-top: 28px; font-size: 13.5px; color: var(--faint); }

/* ---------- 定价 ---------- */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 460px));
  gap: 28px;
  justify-content: center;
}
.price-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 40px 38px;
  position: relative;
  box-shadow: var(--shadow-card);
}
.price-card.featured { border-color: var(--accent); box-shadow: var(--shadow-pop); }
.price-card .plan-badge {
  position: absolute;
  top: -13px; left: 38px;
  font-size: 12.5px;
  font-weight: 600;
  color: #fff;
  background: linear-gradient(135deg, var(--accent-bright), var(--accent-deep));
  padding: 4px 14px;
  border-radius: 999px;
}
.price-card h3 { font-size: 24px; }
.price-card .plan-for { font-size: 14px; color: var(--muted); margin: 6px 0 26px; }
.price-line { display: flex; align-items: baseline; gap: 6px; margin-bottom: 26px; }
.price-line .cur { font-size: 20px; font-weight: 600; color: var(--fg-strong); }
.price-line .amount {
  font-family: var(--font-display);
  font-size: 56px;
  font-weight: 700;
  color: var(--fg-strong);
  line-height: 1;
  font-variant-numeric: tabular-nums;
}
.price-line .per { font-size: 15px; color: var(--faint); }
.price-card ul { list-style: none; margin: 0 0 30px; }
.price-card li {
  padding: 10px 0 10px 28px;
  font-size: 14.5px;
  border-top: 1px solid var(--border);
  position: relative;
  color: var(--fg);
}
.price-card li::before {
  content: '';
  position: absolute;
  left: 2px; top: 16px;
  width: 14px; height: 8px;
  border-left: 2px solid var(--accent);
  border-bottom: 2px solid var(--accent);
  transform: rotate(-48deg);
}
.price-card li.dim { color: var(--faint); }
.price-card li.dim::before { border-color: var(--border-strong); }
.price-card .btn { width: 100%; }
.pricing-note { text-align: center; margin-top: 30px; font-size: 13.5px; color: var(--faint); }

/* ---------- 对比表 ---------- */
.compare-table { width: 100%; border-collapse: collapse; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; }
.compare-table th, .compare-table td {
  padding: 14px 20px;
  font-size: 14.5px;
  text-align: left;
  border-bottom: 1px solid var(--border);
}
.compare-table th {
  font-weight: 600;
  color: var(--fg-strong);
  background: var(--bg);
  font-size: 14px;
}
.compare-table td:not(:first-child), .compare-table th:not(:first-child) { text-align: center; width: 22%; }
.compare-table td:first-child { color: var(--muted); }
.compare-table .yes { color: var(--accent-ink); font-weight: 700; }
.compare-table .no { color: var(--border-strong); }
.compare-table tr:last-child td { border-bottom: 0; }
.table-scroll { overflow-x: auto; border-radius: var(--radius); }

/* ---------- FAQ ---------- */
.faq-list { max-width: 780px; }
.faq-item { border-bottom: 1px solid var(--border); }
.faq-q {
  width: 100%;
  background: none;
  border: 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  text-align: left;
  padding: 22px 4px;
  font-size: 16.5px;
  font-weight: 600;
  color: var(--fg-strong);
}
.faq-q .chev {
  flex-shrink: 0;
  width: 22px; height: 22px;
  border-radius: 50%;
  border: 1px solid var(--border-strong);
  display: grid;
  place-items: center;
  font-size: 13px;
  color: var(--muted);
  transition: transform 0.2s;
}
.faq-item.open .chev { transform: rotate(45deg); border-color: var(--accent); color: var(--accent-ink); }
.faq-a { display: none; padding: 0 40px 24px 4px; font-size: 15px; color: var(--muted); }
.faq-item.open .faq-a { display: block; }

/* ---------- 文书库 ---------- */
.doclib-bar {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  align-items: center;
  margin-bottom: 28px;
}
.doclib-search {
  flex: 1;
  min-width: 240px;
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--surface);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  padding: 11px 16px;
}
.doclib-search svg { width: 17px; height: 17px; stroke: var(--faint); fill: none; stroke-width: 1.8; flex-shrink: 0; }
.doclib-search input {
  border: 0;
  outline: 0;
  background: none;
  font-family: inherit;
  font-size: 15px;
  color: var(--fg);
  width: 100%;
}
.doclib-search input::placeholder { color: var(--faint); }
.doclib-chips { display: flex; gap: 8px; flex-wrap: wrap; }
.chip {
  border: 1px solid var(--border-strong);
  background: var(--surface);
  border-radius: 999px;
  padding: 7px 16px;
  font-size: 13.5px;
  font-weight: 500;
  color: var(--muted);
  transition: all 0.15s;
}
.chip:hover { border-color: var(--accent); color: var(--accent-ink); }
.chip.active {
  background: var(--fg-strong);
  border-color: var(--fg-strong);
  color: #fff;
}
.doclib-count { font-size: 13.5px; color: var(--faint); margin-bottom: 18px; font-variant-numeric: tabular-nums; }

.doc-group { margin-bottom: 34px; }
.doc-group-title {
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 700;
  color: var(--fg-strong);
  padding-bottom: 10px;
  border-bottom: 1.5px solid var(--fg-strong);
  margin-bottom: 14px;
  display: flex;
  justify-content: space-between;
  align-items: baseline;
}
.doc-group-title .cnt { font-family: var(--font-mono); font-size: 12px; color: var(--faint); font-weight: 400; }
.doc-items { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px 20px; }
.doc-item {
  display: flex;
  align-items: center;
  gap: 9px;
  font-size: 14px;
  color: var(--fg);
  padding: 7px 10px;
  border-radius: 6px;
  background: var(--surface);
  border: 1px solid var(--border);
}
.doc-item .dot { width: 5px; height: 5px; border-radius: 50%; background: var(--border-strong); flex-shrink: 0; }
.doc-item.hot .dot { background: var(--accent); }
.doc-item .hot-badge {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.08em;
  color: var(--accent-ink);
  background: var(--accent-wash);
  padding: 1.5px 7px;
  border-radius: 4px;
  flex-shrink: 0;
}
.doclib-empty { padding: 48px 0; text-align: center; color: var(--faint); font-size: 15px; display: none; }

/* ---------- 子页 hero ---------- */
.page-hero {
  padding: 72px 0 60px;
  border-bottom: 1px solid var(--border);
  background: var(--surface);
}
.page-hero .crumbs { font-size: 13px; color: var(--faint); margin-bottom: 22px; }
.page-hero .crumbs a:hover { color: var(--accent-ink); }
.page-hero .crumbs .sep { margin: 0 8px; color: var(--border-strong); }
.page-hero h1 { font-size: clamp(32px, 4vw, 46px); margin: 16px 0 16px; }
.page-hero .lead { font-size: 17.5px; }

/* ---------- 步骤 / 编号列表 ---------- */
.steps { counter-reset: step; display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.step {
  counter-increment: step;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  position: relative;
}
.step::before {
  content: counter(step, decimal-leading-zero);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.14em;
  color: var(--accent-ink);
  display: block;
  margin-bottom: 14px;
}
.step h4 { font-family: var(--font-display); font-size: 18px; color: var(--fg-strong); margin-bottom: 8px; }
.step p { font-size: 14px; color: var(--muted); }

/* ---------- 触发映射表（agent 页） ---------- */
.trigger-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 40px minmax(0, 1.4fr);
  gap: 14px;
  align-items: center;
  padding: 18px 0;
  border-bottom: 1px solid var(--border);
}
.trigger-row .t-event { font-size: 15px; font-weight: 600; color: var(--fg-strong); }
.trigger-row .t-event .t-sub { display: block; font-size: 12.5px; font-weight: 400; color: var(--faint); margin-top: 3px; }
.trigger-row .t-arrow { text-align: center; color: var(--accent); font-size: 18px; }
.trigger-row .t-out { display: flex; flex-wrap: wrap; gap: 7px; }
.trigger-row .t-out span {
  font-size: 12.5px;
  padding: 3px 10px;
  border-radius: 6px;
  background: var(--accent-wash);
  border: 1px solid rgba(11, 156, 144, 0.3);
  color: var(--accent-ink);
}

/* ---------- 下载页 ---------- */
.dl-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 460px)); gap: 28px; justify-content: center; }
.dl-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 40px;
  text-align: center;
  position: relative;
  box-shadow: var(--shadow-card);
}
.dl-card.recommended { border-color: var(--accent); }
.dl-card .rec-badge {
  position: absolute;
  top: -13px; left: 50%;
  transform: translateX(-50%);
  font-size: 12.5px;
  font-weight: 600;
  color: #fff;
  background: linear-gradient(135deg, var(--accent-bright), var(--accent-deep));
  padding: 4px 14px;
  border-radius: 999px;
  white-space: nowrap;
}
.dl-card .os-logo { width: 56px; height: 56px; margin: 0 auto 20px; fill: var(--fg-strong); }
.dl-card h3 { font-size: 23px; margin-bottom: 6px; }
.dl-card .dl-meta { font-size: 13.5px; color: var(--faint); margin-bottom: 26px; font-variant-numeric: tabular-nums; }
.dl-card .btn { width: 100%; margin-bottom: 12px; }
.dl-card .dl-alt { font-size: 13px; color: var(--muted); }
.dl-card .dl-alt a { color: var(--accent-ink); font-weight: 600; }

.sys-req { width: 100%; border-collapse: collapse; }
.sys-req th, .sys-req td { padding: 13px 18px; font-size: 14.5px; border-bottom: 1px solid var(--border); text-align: left; }
.sys-req th { color: var(--faint); font-weight: 500; width: 180px; }

.notice-box {
  display: flex;
  gap: 16px;
  background: var(--accent-wash);
  border: 1px solid rgba(11, 156, 144, 0.3);
  border-radius: var(--radius);
  padding: 22px 26px;
  font-size: 14.5px;
  color: var(--fg);
}
.notice-box svg { width: 22px; height: 22px; flex-shrink: 0; stroke: var(--accent-ink); fill: none; stroke-width: 1.7; margin-top: 2px; }
.notice-box strong { color: var(--accent-ink); }

/* ---------- CTA 色带 ---------- */
.cta-band {
  background: linear-gradient(180deg, var(--ink-band), var(--ink-band-deep));
  padding: 84px 0;
  text-align: center;
}
.cta-band h2 { color: #fff; font-size: clamp(28px, 3.6vw, 42px); margin-bottom: 16px; }
.cta-band p { color: #9FB3C4; font-size: 17px; max-width: 56ch; margin: 0 auto 36px; }
.cta-band .hero-actions { justify-content: center; }
.cta-band .btn-secondary { background: transparent; border-color: rgba(255,255,255,0.28); color: #fff; }
.cta-band .btn-secondary:hover { border-color: var(--accent-bright); color: var(--accent-bright); }

/* ---------- 页脚 ---------- */
.site-footer {
  background: var(--surface);
  border-top: 1px solid var(--border);
  padding: 60px 0 36px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 44px;
}
.footer-logo { display: flex; align-items: center; gap: 16px; margin-bottom: 20px; }
.footer-logo .brand-mark { height: 56px; width: 56px; }
.footer-logo .brand-name { font-size: 38px; display: block; }
.footer-logo .brand-sub { font-size: 15px; display: block; margin-top: 6px; }
.footer-brand p { font-size: 13.5px; color: var(--faint); max-width: 30ch; }
.footer-col h5 {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--fg-strong);
  margin-bottom: 16px;
}
.footer-col a {
  display: block;
  font-size: 14px;
  color: var(--muted);
  padding: 5px 0;
}
.footer-col a:hover { color: var(--accent-ink); }
.footer-legal {
  border-top: 1px solid var(--border);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  font-size: 12.5px;
  color: var(--faint);
}

/* ---------- 滚动入场（唯一动效） ---------- */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity 0.6s ease, transform 0.6s ease; }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
  .card-grid.cols-4 { grid-template-columns: repeat(2, 1fr); }
  .card-grid.cols-3 { grid-template-columns: repeat(2, 1fr); }
  .doc-items { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .steps { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .container { padding: 0 20px; }
  .nav { height: 60px; gap: 16px; }
  .nav-links { display: none; }
  .nav-cta .btn-secondary { display: none; }
  .nav-burger { display: flex; margin-left: auto; }
  .nav-cta { margin-left: 0; }
  .hero { padding: 60px 0 56px; }
  .hero-facts { flex-wrap: wrap; gap: 0; }
  .hero-facts .fact { width: 50%; margin-right: 0; border-right: 0; padding-right: 16px; }
  .section { padding: 60px 0; }
  .card-grid, .card-grid.cols-3, .card-grid.cols-4 { grid-template-columns: 1fr; }
  .flow-nodes { grid-template-columns: 1fr; }
  .pricing-grid, .dl-grid { grid-template-columns: 1fr; }
  .doc-items { grid-template-columns: 1fr; }
  .trigger-row { grid-template-columns: 1fr; gap: 8px; }
  .trigger-row .t-arrow { text-align: left; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 28px; }
  .ink-band { padding: 60px 0; }
  .cta-band { padding: 60px 0; }
}

@media (max-width: 420px) {
  .hero h1 { font-size: 34px; }
  .hero-facts .fact { width: 100%; }
  .footer-grid { grid-template-columns: 1fr; }
}

/* ============================================================
   v3 视觉升级 — hero 演示面板 / 旗舰能力卡 / 阶段一键生成 /
   合同审核样式 / 知识图谱画布 / 品牌组合标响应式
   ============================================================ */

/* ---------- Hero 双栏 + 纸面网格 ---------- */
.hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 56px 56px;
  opacity: 0.28;
  -webkit-mask-image: radial-gradient(ellipse 70% 60% at 78% 8%, #000, transparent 75%);
  mask-image: radial-gradient(ellipse 70% 60% at 78% 8%, #000, transparent 75%);
  pointer-events: none;
}
.hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1.04fr) minmax(0, 0.96fr);
  gap: 60px;
  align-items: center;
}
.hero-grid .hero-inner { max-width: none; }

/* ---------- 案件文件夹 → Wiki 演示面板 ---------- */
.wiki-demo {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  box-shadow: var(--shadow-pop);
  overflow: hidden;
}
.wiki-demo-head {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 13px 20px;
  border-bottom: 1px solid var(--border);
  background: var(--bg);
  font-size: 13px;
  color: var(--muted);
}
.wiki-demo-head .case-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--accent); flex-shrink: 0; }
.wiki-demo-head .case-tag {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.12em;
  color: var(--accent-ink);
  background: var(--accent-wash);
  padding: 2px 9px;
  border-radius: 4px;
}
.wiki-demo-body { display: grid; grid-template-columns: 168px 1fr; }
.wiki-files {
  border-right: 1px solid var(--border);
  padding: 16px 14px;
  display: flex;
  flex-direction: column;
  gap: 7px;
  background: var(--bg);
}
.wiki-files .wf-label {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--faint);
  margin-bottom: 3px;
}
.wiki-file {
  display: flex;
  align-items: center;
  gap: 7px;
  font-size: 12px;
  color: var(--muted);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 6px 9px;
  white-space: nowrap;
  overflow: hidden;
  opacity: 0;
  animation: wfIn 0.5s ease forwards;
}
.wiki-file svg { width: 13px; height: 13px; stroke: var(--faint); fill: none; stroke-width: 1.6; flex-shrink: 0; }
.wiki-file:nth-child(2) { animation-delay: 0.1s; }
.wiki-file:nth-child(3) { animation-delay: 0.25s; }
.wiki-file:nth-child(4) { animation-delay: 0.4s; }
.wiki-file:nth-child(5) { animation-delay: 0.55s; }
@keyframes wfIn { from { opacity: 0; transform: translateX(-10px); } to { opacity: 1; transform: none; } }
.wiki-graph { padding: 12px 10px 8px; }
.wiki-graph svg { width: 100%; height: auto; display: block; }
.wg-line {
  stroke: var(--border-strong);
  stroke-width: 1.2;
  stroke-dasharray: 220;
  stroke-dashoffset: 220;
  animation: wgDraw 1.1s ease forwards 0.7s;
}
@keyframes wgDraw { to { stroke-dashoffset: 0; } }
.wg-node { opacity: 0; animation: wfIn 0.5s ease forwards; }
.wg-node:nth-of-type(1) { animation-delay: 0.75s; }
.wg-node:nth-of-type(2) { animation-delay: 0.9s; }
.wg-node:nth-of-type(3) { animation-delay: 1.05s; }
.wg-node:nth-of-type(4) { animation-delay: 1.2s; }
.wg-node:nth-of-type(5) { animation-delay: 1.35s; }
.wg-node:nth-of-type(6) { animation-delay: 1.5s; }
.wg-pulse { animation: wgPulse 3s ease-in-out 2s infinite; transform-origin: center; transform-box: fill-box; }
@keyframes wgPulse { 0%, 100% { opacity: 0.35; transform: scale(1); } 50% { opacity: 0.9; transform: scale(1.5); } }
.wiki-demo-foot {
  border-top: 1px solid var(--border);
  padding: 12px 20px;
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  font-size: 12.5px;
  color: var(--faint);
}
.wiki-demo-foot .gen-chip {
  font-size: 12px;
  padding: 3px 10px;
  border-radius: 6px;
  background: var(--accent-wash);
  border: 1px solid rgba(11, 156, 144, 0.3);
  color: var(--accent-ink);
}
@media (prefers-reduced-motion: reduce) {
  .wiki-file, .wg-node { opacity: 1; animation: none; }
  .wg-line { stroke-dashoffset: 0; animation: none; }
  .wg-pulse { animation: none; }
}

/* ---------- 旗舰能力卡 ---------- */
.cap-flagship {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
  gap: 48px;
  background: linear-gradient(180deg, var(--surface), #F2FAF9);
  border: 1px solid rgba(11, 156, 144, 0.35);
  border-radius: 16px;
  padding: 44px;
  box-shadow: var(--shadow-card);
  margin-bottom: 24px;
  position: relative;
}
.cap-flagship .flag-badge {
  position: absolute;
  top: -13px;
  left: 44px;
  font-size: 12.5px;
  font-weight: 600;
  color: #fff;
  background: linear-gradient(135deg, var(--accent-bright), var(--accent-deep));
  padding: 4px 14px;
  border-radius: 999px;
}
.cap-flagship h3 { font-size: 26px; margin: 14px 0 12px; }
.cap-flagship > div > p { font-size: 15px; color: var(--muted); }
.cap-flagship ul { list-style: none; margin-top: 18px; }
.cap-flagship li {
  padding: 9px 0 9px 26px;
  position: relative;
  font-size: 14.5px;
  border-top: 1px solid rgba(11, 156, 144, 0.15);
}
.cap-flagship li::before {
  content: '';
  position: absolute;
  left: 2px; top: 15px;
  width: 13px; height: 7px;
  border-left: 2px solid var(--accent);
  border-bottom: 2px solid var(--accent);
  transform: rotate(-48deg);
}

/* ---------- 阶段一键生成面板 ---------- */
.stagegen {
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  background: var(--surface);
  align-self: center;
}
.stagegen-head {
  padding: 12px 18px;
  border-bottom: 1px solid var(--border);
  background: var(--bg);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--faint);
}
.stage-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  padding: 14px 18px;
  border-bottom: 1px solid var(--border);
}
.stage-chip {
  border: 1px solid var(--border-strong);
  background: var(--surface);
  border-radius: 999px;
  padding: 5px 13px;
  font-size: 12.5px;
  font-weight: 500;
  color: var(--muted);
  transition: all 0.15s;
}
.stage-chip:hover { border-color: var(--accent); color: var(--accent-ink); }
.stage-chip.active { background: var(--fg-strong); border-color: var(--fg-strong); color: #fff; }
.stage-outputs { display: none; padding: 14px 18px 18px; }
.stage-outputs.active { display: block; }
.stage-outputs ul { list-style: none; }
.stage-outputs li {
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 7px 0;
  font-size: 13.5px;
  color: var(--fg);
  border-bottom: 1px dashed var(--border);
}
.stage-outputs li:last-child { border-bottom: 0; }
.stage-outputs li svg { width: 14px; height: 14px; stroke: var(--accent-ink); fill: none; stroke-width: 1.7; flex-shrink: 0; }
.ot {
  margin-left: auto;
  font-size: 11px;
  padding: 1.5px 8px;
  border-radius: 4px;
  flex-shrink: 0;
  letter-spacing: 0.04em;
}
.ot-doc { color: var(--accent-ink); background: var(--accent-wash); }
.ot-map { color: #7A5AA0; background: #F3EEF9; }
.ot-memo { color: var(--warn); background: #FBF3E4; }
.stagegen-note {
  padding: 10px 18px;
  border-top: 1px solid var(--border);
  background: var(--bg);
  font-size: 12px;
  color: var(--faint);
}

/* ---------- 合同审核演示 ---------- */
.clause-demo {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
}
.clause-demo-head {
  padding: 12px 20px;
  border-bottom: 1px solid var(--border);
  background: var(--bg);
  font-size: 13px;
  color: var(--muted);
  display: flex;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}
.clause-row {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr);
  gap: 20px;
  padding: 18px 20px;
  border-bottom: 1px solid var(--border);
}
.clause-row:last-child { border-bottom: 0; }
.clause-text { font-size: 13.5px; color: var(--fg); line-height: 1.75; }
.clause-text .c-no { font-family: var(--font-mono); font-size: 11px; color: var(--faint); display: block; margin-bottom: 4px; letter-spacing: 0.08em; }
.clause-text mark {
  background: rgba(192, 57, 43, 0.12);
  color: inherit;
  padding: 1px 3px;
  border-radius: 3px;
  border-bottom: 1.5px solid rgba(192, 57, 43, 0.55);
}
.clause-note { font-size: 13px; color: var(--muted); }
.risk-pill {
  display: inline-block;
  font-size: 11.5px;
  font-weight: 600;
  padding: 2px 10px;
  border-radius: 999px;
  border: 1px solid;
  margin-bottom: 8px;
  letter-spacing: 0.04em;
}
.pill-high { color: var(--danger); background: #FBEDEB; border-color: rgba(192, 57, 43, 0.3); }
.pill-mid { color: var(--warn); background: #FBF3E4; border-color: rgba(183, 121, 31, 0.3); }
.pill-low { color: var(--success); background: #EAF7F0; border-color: rgba(26, 154, 91, 0.3); }

/* ---------- 知识图谱画布 ---------- */
.kg-canvas {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 28px;
  box-shadow: var(--shadow-card);
}
.kg-canvas svg { width: 100%; height: auto; display: block; }
.kg-legend { display: flex; gap: 18px; flex-wrap: wrap; margin-top: 18px; font-size: 12.5px; color: var(--muted); }
.kg-legend span { display: inline-flex; align-items: center; gap: 7px; }
.kg-legend i { width: 10px; height: 10px; border-radius: 50%; display: inline-block; }

/* ---------- 响应式补充 ---------- */
@media (max-width: 1024px) {
  .hero-grid { grid-template-columns: 1fr; gap: 44px; }
  .cap-flagship { grid-template-columns: 1fr; gap: 28px; }
}
@media (max-width: 768px) {
  .nav { height: 64px; }
  .brand-mark { height: 36px; width: 36px; }
  .brand-name { font-size: 24px; }
  .brand-divider, .nav-logo .brand-sub { display: none; }
  .wiki-demo-body { grid-template-columns: 1fr; }
  .wiki-files { flex-direction: row; flex-wrap: wrap; border-right: 0; border-bottom: 1px solid var(--border); }
  .wiki-files .wf-label { width: 100%; }
  .clause-row { grid-template-columns: 1fr; gap: 10px; }
  .cap-flagship { padding: 28px 22px; }
  .cap-flagship .flag-badge { left: 22px; }
  .footer-logo .brand-mark { height: 46px; width: 46px; }
  .footer-logo .brand-name { font-size: 31px; }
}