/* =========================================================
   工厂管家ERP - 官网样式
   ========================================================= */

:root {
  --primary: #2560EB;
  --primary-dark: #1D4ED8;
  --primary-light: #3B82F6;
  --accent: #38BDF8;
  --gradient: linear-gradient(135deg, #2560EB 0%, #38BDF8 100%);
  --dark: #0F172A;
  --dark-2: #1E293B;
  --text: #334155;
  --text-light: #64748B;
  --bg: #FFFFFF;
  --bg-light: #F6F8FC;
  --border: #E2E8F0;
  --success: #10B981;
  --warning: #F59E0B;
  --danger: #EF4444;
  --radius: 16px;
  --shadow-sm: 0 2px 8px rgba(15, 23, 42, 0.06);
  --shadow-md: 0 8px 30px rgba(15, 23, 42, 0.1);
  --shadow-lg: 0 20px 60px rgba(15, 23, 42, 0.16);
  --container: 1200px;
  --font: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', -apple-system, sans-serif;
}

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

html { scroll-behavior: smooth; scroll-padding-top: 76px; }

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

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

.container { max-width: var(--container); margin: 0 auto; padding: 0 24px; }

.gradient-text {
  background: var(--gradient);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 600;
  transition: all 0.25s ease;
  white-space: nowrap;
}
.btn-sm { padding: 9px 20px; font-size: 14px; }
.btn-lg { padding: 15px 36px; font-size: 16px; }
.btn-block { width: 100%; }

.btn-primary { background: var(--gradient); color: #fff; box-shadow: 0 6px 18px rgba(37, 96, 235, 0.35); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 10px 26px rgba(37, 96, 235, 0.45); }

.btn-ghost { color: var(--text); background: transparent; }
.btn-ghost:hover { color: var(--primary); background: rgba(37, 96, 235, 0.06); }

.btn-outline { color: var(--primary); border: 2px solid rgba(37, 96, 235, 0.35); background: transparent; }
.btn-outline:hover { background: var(--primary); color: #fff; border-color: var(--primary); }

.btn-light { background: #fff; color: var(--primary); box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2); }
.btn-light:hover { transform: translateY(-2px); }

/* ---------- 导航栏 ---------- */
.header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid transparent;
  transition: all 0.3s ease;
}
.header.scrolled {
  background: rgba(255, 255, 255, 0.95);
  border-bottom-color: var(--border);
  box-shadow: var(--shadow-sm);
}

.nav { display: flex; align-items: center; justify-content: space-between; height: 76px; }

.nav-logo { display: flex; align-items: center; gap: 10px; }
.logo-icon { display: flex; align-items: center; }
.logo-text { font-size: 22px; font-weight: 800; color: var(--dark); letter-spacing: 0.5px; }
.logo-text span { color: var(--primary); }

.nav-menu { display: flex; align-items: center; gap: 6px; }
.nav-link {
  display: block;
  padding: 8px 14px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text);
  border-radius: 8px;
  transition: all 0.2s ease;
}
.nav-link:hover { color: var(--primary); background: rgba(37, 96, 235, 0.06); }

.nav-actions { display: flex; align-items: center; gap: 12px; }

.nav-toggle { display: none; flex-direction: column; gap: 5px; padding: 8px; }
.nav-toggle span { width: 22px; height: 2px; background: var(--dark); border-radius: 2px; transition: all 0.3s ease; }
.nav-toggle.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.active span:nth-child(2) { opacity: 0; }
.nav-toggle.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  padding: 160px 0 100px;
  background: linear-gradient(180deg, #F0F5FF 0%, #F8FBFF 45%, #FFFFFF 100%);
  overflow: hidden;
}
.hero-bg { position: absolute; inset: 0; pointer-events: none; }
.grid-lines {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(37, 96, 235, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(37, 96, 235, 0.05) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 20%, black, transparent);
  -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 20%, black, transparent);
}
.blob { position: absolute; border-radius: 50%; filter: blur(90px); opacity: 0.45; }
.blob-1 { width: 480px; height: 480px; background: rgba(56, 189, 248, 0.35); top: -120px; right: -100px; }
.blob-2 { width: 400px; height: 400px; background: rgba(37, 96, 235, 0.25); bottom: -140px; left: -120px; }

.hero-inner { position: relative; display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 60px; align-items: center; }

.badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 16px;
  background: rgba(37, 96, 235, 0.08);
  color: var(--primary);
  border: 1px solid rgba(37, 96, 235, 0.18);
  border-radius: 999px;
  font-size: 13.5px;
  font-weight: 600;
  margin-bottom: 26px;
  animation: fadeUp 0.8s ease both;
}

.hero-title {
  font-size: clamp(36px, 4.6vw, 56px);
  font-weight: 800;
  color: var(--dark);
  line-height: 1.25;
  letter-spacing: -0.5px;
  margin-bottom: 22px;
  animation: fadeUp 0.8s 0.1s ease both;
}

.hero-subtitle {
  font-size: 17px;
  color: var(--text-light);
  max-width: 540px;
  margin-bottom: 34px;
  animation: fadeUp 0.8s 0.2s ease both;
}

.hero-cta { display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 30px; animation: fadeUp 0.8s 0.3s ease both; }

.hero-meta { display: flex; flex-wrap: wrap; gap: 10px 24px; color: var(--text-light); font-size: 14px; animation: fadeUp 0.8s 0.4s ease both; }
.hero-meta span { display: inline-flex; align-items: center; gap: 6px; }
.hero-meta span::before { content: '✓'; color: var(--success); font-weight: 700; }

/* Hero 仪表盘 */
.hero-visual { position: relative; animation: fadeUp 1s 0.25s ease both; }
.dashboard-card {
  background: #fff;
  border-radius: 20px;
  box-shadow: var(--shadow-lg);
  border: 1px solid rgba(226, 232, 240, 0.8);
  overflow: hidden;
  transform: rotate(-1.2deg);
}
.dash-header {
  display: flex; align-items: center; gap: 7px;
  padding: 14px 18px;
  background: #F8FAFC;
  border-bottom: 1px solid var(--border);
}
.dot { width: 11px; height: 11px; border-radius: 50%; }
.dot.red { background: #F87171; }
.dot.yellow { background: #FBBF24; }
.dot.green { background: #34D399; }
.dash-title { margin-left: auto; font-size: 13px; font-weight: 600; color: var(--text-light); }

.dash-body { padding: 20px 22px 22px; }
.dash-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin-bottom: 20px; }
.kpi {
  background: var(--bg-light);
  border-radius: 12px;
  padding: 14px 12px;
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.kpi-label { font-size: 12px; color: var(--text-light); }
.kpi-value { font-size: 26px; font-weight: 800; color: var(--dark); line-height: 1.2; }
.kpi-trend { font-size: 11.5px; font-weight: 600; }
.kpi-trend.up { color: var(--success); }
.kpi-trend.down { color: var(--warning); }

.chart-box { background: var(--bg-light); border-radius: 12px; padding: 16px; margin-bottom: 16px; }
.chart-title { font-size: 13px; font-weight: 600; color: var(--dark); margin-bottom: 12px; }
.bars { display: flex; align-items: flex-end; gap: 10px; height: 120px; }
.bar {
  flex: 1;
  height: var(--h);
  background: var(--gradient);
  border-radius: 6px 6px 2px 2px;
  opacity: 0.85;
  animation: growBar 1s ease both;
  transform-origin: bottom;
}

.dash-list { display: flex; flex-direction: column; gap: 9px; }
.list-item {
  display: flex; align-items: center; gap: 10px;
  font-size: 13px;
  color: var(--dark-2);
  background: var(--bg-light);
  padding: 10px 14px;
  border-radius: 10px;
}
.ok-icon { color: var(--success); font-weight: 700; }
.warn-icon { color: var(--warning); font-weight: 700; }

.float-card {
  position: absolute;
  display: flex;
  align-items: center;
  gap: 12px;
  background: #fff;
  border-radius: 14px;
  box-shadow: var(--shadow-md);
  padding: 12px 18px;
  border: 1px solid rgba(226, 232, 240, 0.7);
  animation: float 5s ease-in-out infinite;
}
.float-card strong { display: block; font-size: 14px; color: var(--dark); }
.float-card small { font-size: 12px; color: var(--text-light); }
.fc-icon { font-size: 24px; }
.float-card-1 { top: 12%; left: -52px; }
.float-card-2 { bottom: 6%; right: -40px; animation-delay: 2.4s; }

.scroll-hint {
  position: absolute;
  bottom: 26px; left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: var(--text-light);
  font-size: 12px;
  letter-spacing: 2px;
}
.mouse { width: 24px; height: 38px; border: 2px solid var(--text-light); border-radius: 14px; display: flex; justify-content: center; padding-top: 6px; }
.wheel { width: 4px; height: 8px; background: var(--primary); border-radius: 4px; animation: wheel 1.6s ease-in-out infinite; }

/* ---------- 统计栏 ---------- */
.stats { background: var(--dark); padding: 54px 0; }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 30px; }
.stat-item { text-align: center; }
.stat-num {
  display: block;
  font-size: 44px;
  font-weight: 800;
  color: #fff;
  line-height: 1.2;
  background: var(--gradient);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.stat-label { color: #94A3B8; font-size: 15px; }

/* ---------- 通用区块 ---------- */
.section { padding: 100px 0; }
.section-head { text-align: center; max-width: 720px; margin: 0 auto 60px; }
.section-tag {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 3px;
  color: var(--primary);
  background: rgba(37, 96, 235, 0.08);
  padding: 6px 16px;
  border-radius: 999px;
  margin-bottom: 18px;
}
.section-title { font-size: clamp(28px, 3.4vw, 40px); font-weight: 800; color: var(--dark); line-height: 1.3; margin-bottom: 16px; }
.section-desc { color: var(--text-light); font-size: 16.5px; }

/* ---------- 核心功能 ---------- */
.features { background: var(--bg); }
.features-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }

.feature-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 34px 30px;
  transition: all 0.3s ease;
}
.feature-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
  border-color: rgba(37, 96, 235, 0.3);
}
.feature-icon {
  width: 56px; height: 56px;
  display: flex; align-items: center; justify-content: center;
  font-size: 26px;
  background: linear-gradient(135deg, rgba(37, 96, 235, 0.1), rgba(56, 189, 248, 0.1));
  border-radius: 14px;
  margin-bottom: 20px;
}
.feature-card h3 { font-size: 19px; font-weight: 700; color: var(--dark); margin-bottom: 10px; }
.feature-card p { font-size: 14.5px; color: var(--text-light); }

/* ---------- 功能模块 ---------- */
.modules { background: var(--bg-light); }
.modules-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }

.module-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 26px 24px;
  position: relative;
  overflow: hidden;
  transition: all 0.3s ease;
}
.module-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-md); }
.module-card:hover h3 { color: var(--primary); }
.module-no {
  position: absolute;
  top: -6px; right: 6px;
  font-size: 58px;
  font-weight: 800;
  color: rgba(37, 96, 235, 0.07);
  line-height: 1;
  pointer-events: none;
}
.module-card h3 { font-size: 17px; font-weight: 700; color: var(--dark); margin-bottom: 14px; transition: color 0.3s; }
.module-card ul { display: flex; flex-direction: column; gap: 7px; }
.module-card li { font-size: 13.5px; color: var(--text-light); position: relative; padding-left: 16px; }
.module-card li::before { content: ''; position: absolute; left: 0; top: 9px; width: 6px; height: 6px; border-radius: 50%; background: var(--primary); }
.module-card-more { grid-column: span 1; }

/* ---------- 解决方案 ---------- */
.solutions { background: var(--bg); }
.solution-tabs {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 44px;
}
.solution-tab {
  padding: 11px 28px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 600;
  color: var(--text-light);
  background: var(--bg-light);
  border: 1px solid var(--border);
  transition: all 0.25s ease;
}
.solution-tab:hover { color: var(--primary); border-color: var(--primary-light); }
.solution-tab.active { background: var(--gradient); color: #fff; border-color: transparent; box-shadow: 0 6px 16px rgba(37, 96, 235, 0.3); }

.solution-panels { position: relative; }
.solution-panel { display: none; }
.solution-panel.active { display: grid; grid-template-columns: 1.2fr 0.8fr; gap: 40px; align-items: center; animation: fadeUp 0.5s ease both; }
.panel-text h3 { font-size: 26px; font-weight: 800; color: var(--dark); margin-bottom: 14px; }
.panel-text > p { color: var(--text-light); font-size: 15.5px; margin-bottom: 22px; max-width: 560px; }
.panel-text ul { display: grid; grid-template-columns: 1fr 1fr; gap: 12px 20px; }
.panel-text li { font-size: 14.5px; color: var(--dark-2); display: flex; align-items: center; gap: 8px; }
.panel-text li::before { content: '✓'; color: var(--success); font-weight: 700; }

.panel-card {
  background: linear-gradient(160deg, var(--dark) 0%, #1E3A8A 100%);
  border-radius: 20px;
  padding: 34px 30px;
  color: #fff;
  box-shadow: var(--shadow-lg);
}
.pc-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 26px; }
.pc-header span { color: #93C5FD; font-size: 14px; }
.pc-header strong { font-size: 15px; padding: 5px 12px; background: rgba(255, 255, 255, 0.12); border-radius: 999px; }
.pc-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.pc-grid div { background: rgba(255, 255, 255, 0.08); border-radius: 12px; padding: 16px 10px; text-align: center; }
.pc-grid strong { display: block; font-size: 24px; font-weight: 800; margin-bottom: 4px; background: var(--gradient); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.pc-grid span { font-size: 12px; color: #CBD5E1; }

/* ---------- 价值对比 ---------- */
.compare { background: linear-gradient(160deg, #0F172A 0%, #1E3A8A 100%); }
.compare .section-tag { background: rgba(255, 255, 255, 0.12); color: #93C5FD; }
.section-head.light .section-title { color: #fff; }
.section-head.light .section-desc { color: #94A3B8; }

.compare-wrap {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 30px;
  align-items: stretch;
  max-width: 1000px;
  margin: 0 auto;
}
.compare-col {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 20px;
  padding: 36px 34px;
  backdrop-filter: blur(6px);
}
.compare-col h3 { color: #fff; font-size: 20px; margin-bottom: 24px; }
.compare-old h3 { color: #FCA5A5; }
.compare-new h3 { color: #6EE7B7; }
.compare-col li {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  color: #CBD5E1;
  font-size: 14.5px;
  margin-bottom: 16px;
  line-height: 1.6;
}
.x { color: var(--danger); font-weight: 700; }
.check { color: var(--success); font-weight: 700; }
.compare-vs {
  align-self: center;
  width: 56px; height: 56px;
  border-radius: 50%;
  background: var(--gradient);
  display: flex; align-items: center; justify-content: center;
  font-weight: 800;
  color: #fff;
  font-size: 15px;
  box-shadow: 0 0 0 6px rgba(56, 189, 248, 0.2);
}

/* ---------- 价格 ---------- */
.pricing { background: var(--bg-light); }
.pricing-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; align-items: stretch; }

.price-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 38px 34px;
  display: flex;
  flex-direction: column;
  position: relative;
  transition: all 0.3s ease;
}
.price-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.price-card.popular {
  border: 2px solid var(--primary);
  box-shadow: 0 16px 50px rgba(37, 96, 235, 0.18);
}
.popular-tag {
  position: absolute;
  top: -14px; left: 50%;
  transform: translateX(-50%);
  background: var(--gradient);
  color: #fff;
  font-size: 13px;
  font-weight: 700;
  padding: 6px 20px;
  border-radius: 999px;
  white-space: nowrap;
  box-shadow: 0 6px 16px rgba(37, 96, 235, 0.35);
}
.price-head h3 { font-size: 22px; font-weight: 800; color: var(--dark); margin-bottom: 6px; }
.price-head p { font-size: 13.5px; color: var(--text-light); margin-bottom: 22px; }
.price-amount { font-size: 38px; font-weight: 800; color: var(--dark); margin-bottom: 26px; }
.price-amount .currency { font-size: 18px; vertical-align: super; margin-right: 2px; }
.price-amount .period { font-size: 14px; color: var(--text-light); font-weight: 500; margin-left: 4px; }

.price-features { flex: 1; margin-bottom: 30px; display: flex; flex-direction: column; gap: 12px; }
.price-features li { font-size: 14.5px; color: var(--text); display: flex; gap: 10px; align-items: flex-start; }
.price-features li::before { content: '✓'; color: var(--success); font-weight: 700; }

.pricing-note { text-align: center; color: var(--text-light); font-size: 13px; margin-top: 30px; }

/* ---------- 客户评价 ---------- */
.testimonials { background: var(--bg); }
.testimonial-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.testimonial-card {
  background: var(--bg-light);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 30px;
  transition: all 0.3s ease;
}
.testimonial-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-md); }
.stars { color: #FBBF24; letter-spacing: 3px; font-size: 16px; margin-bottom: 16px; }
.quote { font-size: 14.5px; color: var(--text); margin-bottom: 24px; line-height: 1.8; }
.author { display: flex; align-items: center; gap: 14px; }
.avatar {
  width: 46px; height: 46px;
  border-radius: 50%;
  color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-size: 18px;
  font-weight: 700;
}
.author strong { display: block; font-size: 15px; color: var(--dark); }
.author small { font-size: 12.5px; color: var(--text-light); }

/* ---------- FAQ ---------- */
.faq { background: var(--bg-light); }
.faq-list { max-width: 820px; margin: 0 auto; display: flex; flex-direction: column; gap: 14px; }
.faq-item {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 14px;
  overflow: hidden;
  transition: box-shadow 0.3s ease;
}
.faq-item.open { box-shadow: var(--shadow-md); }
.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 26px;
  font-size: 16px;
  font-weight: 600;
  color: var(--dark);
  text-align: left;
  transition: color 0.3s;
}
.faq-question:hover { color: var(--primary); }
.faq-icon {
  flex-shrink: 0;
  width: 28px; height: 28px;
  border-radius: 50%;
  background: rgba(37, 96, 235, 0.1);
  color: var(--primary);
  display: flex; align-items: center; justify-content: center;
  font-size: 18px;
  font-weight: 500;
  transition: all 0.3s ease;
}
.faq-item.open .faq-icon { transform: rotate(45deg); background: var(--primary); color: #fff; }
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease;
}
.faq-answer p { padding: 0 26px 22px; font-size: 14.5px; color: var(--text-light); }

/* ---------- CTA 横幅 ---------- */
.cta-banner {
  position: relative;
  background: linear-gradient(135deg, #2560EB 0%, #38BDF8 100%);
  padding: 90px 0;
  overflow: hidden;
}
.cta-banner::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 20% 30%, rgba(255, 255, 255, 0.15) 0%, transparent 40%),
              radial-gradient(circle at 80% 70%, rgba(255, 255, 255, 0.12) 0%, transparent 40%);
}
.cta-inner { position: relative; text-align: center; color: #fff; }
.cta-inner h2 { font-size: clamp(28px, 3.6vw, 44px); font-weight: 800; line-height: 1.35; margin-bottom: 16px; }
.cta-inner p { font-size: 17px; opacity: 0.9; margin-bottom: 34px; }

/* ---------- 联系我们 ---------- */
.contact { background: var(--bg); }
.contact-inner { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: start; }
.contact-info .section-head { text-align: left; margin-bottom: 36px; }
.contact-info .section-desc { margin-top: 0; }

.contact-list { display: flex; flex-direction: column; gap: 22px; }
.contact-list li { display: flex; gap: 16px; align-items: flex-start; }
.contact-list li > span {
  width: 46px; height: 46px;
  flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  background: rgba(37, 96, 235, 0.08);
  border-radius: 12px;
  font-size: 20px;
}
.contact-list strong { display: block; font-size: 14px; color: var(--text-light); font-weight: 500; margin-bottom: 2px; }
.contact-list a, .contact-list li > div > span:last-child { font-size: 16px; font-weight: 600; color: var(--dark); }
.contact-list a:hover { color: var(--primary); }

.contact-form {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 38px 36px;
  box-shadow: var(--shadow-md);
}
.contact-form h3 { font-size: 22px; font-weight: 800; color: var(--dark); margin-bottom: 26px; }
.form-group { margin-bottom: 18px; }
.form-group label { display: block; font-size: 13.5px; font-weight: 600; color: var(--dark-2); margin-bottom: 8px; }
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1.5px solid var(--border);
  border-radius: 10px;
  font-family: inherit;
  font-size: 14.5px;
  color: var(--dark);
  background: var(--bg-light);
  transition: all 0.25s ease;
  outline: none;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--primary);
  background: #fff;
  box-shadow: 0 0 0 3px rgba(37, 96, 235, 0.12);
}
.form-group textarea { resize: vertical; }
.form-note { font-size: 12.5px; color: var(--text-light); text-align: center; margin-top: 14px; }

/* 验证码 */
.captcha-row { display: flex; gap: 10px; align-items: center; }
.captcha-row input { flex: 1; }
.captcha-refresh { white-space: nowrap; padding: 10px 16px; font-size: 13.5px; }
.captcha-question { margin-top: 8px; font-size: 15px; font-weight: 700; color: var(--primary); letter-spacing: 1.5px; }

.form-success {
  text-align: center;
  padding: 22px;
  background: rgba(16, 185, 129, 0.08);
  border: 1px solid rgba(16, 185, 129, 0.3);
  border-radius: 12px;
  margin-top: 16px;
}
.form-success span { font-size: 34px; }
.form-success p { color: #059669; font-size: 14.5px; font-weight: 600; }

.form-error {
  text-align: center;
  padding: 22px;
  background: rgba(239, 68, 68, 0.08);
  border: 1px solid rgba(239, 68, 68, 0.3);
  border-radius: 12px;
  margin-top: 16px;
}
.form-error span { font-size: 34px; }
.form-error p { color: #DC2626; font-size: 14.5px; font-weight: 600; }
button[disabled] { opacity: 0.6; cursor: not-allowed; }

/* ---------- 页脚 ---------- */
.footer { background: var(--dark); color: #94A3B8; padding: 70px 0 0; }
.footer-top {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 50px;
  border-bottom: 1px solid rgba(148, 163, 184, 0.15);
}
.footer .logo-text { color: #fff; }
.footer-brand p { font-size: 14px; margin: 18px 0 22px; max-width: 300px; line-height: 1.8; }
.social-links { display: flex; gap: 12px; }
.social-links a {
  width: 38px; height: 38px;
  display: flex; align-items: center; justify-content: center;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 10px;
  font-size: 14px;
  color: #E2E8F0;
  transition: all 0.25s ease;
}
.social-links a:hover { background: var(--gradient); transform: translateY(-3px); }
.footer-col h4 { color: #fff; font-size: 16px; margin-bottom: 20px; font-weight: 700; }
.footer-col li { margin-bottom: 12px; }
.footer-col a { font-size: 14px; transition: all 0.2s ease; }
.footer-col a:hover { color: var(--accent); padding-left: 4px; }
.footer-bottom {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
  padding: 24px 0;
  font-size: 13px;
}
.footer-bottom a:hover { color: var(--accent); }

/* ---------- 动画 ---------- */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(26px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}
@keyframes wheel {
  0% { opacity: 1; transform: translateY(0); }
  100% { opacity: 0; transform: translateY(12px); }
}
@keyframes growBar {
  from { transform: scaleY(0); }
  to { transform: scaleY(1); }
}

.reveal { opacity: 0; transform: translateY(30px); transition: opacity 0.7s ease, transform 0.7s ease; }
.reveal.visible { opacity: 1; transform: translateY(0); }

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
  .hero-inner { grid-template-columns: 1fr; gap: 60px; }
  .hero-visual { max-width: 620px; margin: 0 auto; }
  .float-card-1 { left: -10px; }
  .float-card-2 { right: -10px; }
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .modules-grid { grid-template-columns: repeat(3, 1fr); }
  .pricing-grid { grid-template-columns: 1fr; max-width: 520px; margin: 0 auto; }
  .testimonial-grid { grid-template-columns: 1fr; max-width: 640px; margin: 0 auto; }
  .footer-top { grid-template-columns: 1fr 1fr; }
  .contact-inner { grid-template-columns: 1fr; gap: 50px; }
}

/* 中宽窗口（平板 / 小笔记本）导航转抽屉菜单，避免 9 项菜单挤压换行 */
@media (max-width: 1080px) {
  .nav-toggle { display: flex; }
  .nav-menu {
    position: fixed;
    top: 76px; left: 0; right: 0;
    background: #fff;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 12px 20px 20px;
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow-md);
    transform: translateY(-120%);
    transition: transform 0.35s ease;
    z-index: 999;
  }
  .nav-menu.open { transform: translateY(0); }
  .nav-link { padding: 13px 10px; border-bottom: 1px solid var(--bg-light); border-radius: 0; }
  .nav-actions .btn-primary { display: none; }
}

@media (max-width: 768px) {
  .section { padding: 70px 0; }
  .hero { padding: 130px 0 80px; }

  .nav-toggle { display: flex; }
  .nav-menu {
    position: fixed;
    top: 76px; left: 0; right: 0;
    background: #fff;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 12px 20px 20px;
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow-md);
    transform: translateY(-120%);
    transition: transform 0.35s ease;
    z-index: 999;
  }
  .nav-menu.open { transform: translateY(0); }
  .nav-link { padding: 13px 10px; border-bottom: 1px solid var(--bg-light); border-radius: 0; }
  .nav-actions .btn-ghost, .nav-actions .btn-primary { display: none; }

  .hero-cta .btn { width: 100%; }
  .hero-meta { flex-direction: column; gap: 8px; }

  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 26px; }
  .features-grid { grid-template-columns: 1fr; }
  .modules-grid { grid-template-columns: repeat(2, 1fr); }
  .solution-panel.active { grid-template-columns: 1fr; }
  .panel-text ul { grid-template-columns: 1fr; }
  .compare-wrap { grid-template-columns: 1fr; }
  .compare-vs { margin: 0 auto; }
  .pricing-grid { max-width: 460px; }
  .footer-top { grid-template-columns: 1fr; gap: 30px; }
  .float-card { display: none; }
  .scroll-hint { display: none; }
}

@media (max-width: 480px) {
  .modules-grid { grid-template-columns: 1fr; }
  .dash-row { grid-template-columns: 1fr; }
  .stats-grid { gap: 20px; }
  .stat-num { font-size: 34px; }
  .contact-form { padding: 28px 22px; }
  .hero-title { font-size: 34px; }
}

/* =========================================================
   内页样式（SEO 多页面）
   ========================================================= */

/* ---------- noscript 回退导航 ---------- */
.noscript-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  background: var(--dark);
  padding: 14px 24px;
  font-size: 14px;
}
.noscript-nav a { color: #E2E8F0; }
.noscript-nav a:hover { color: var(--accent); }

/* ---------- 导航高亮当前页 ---------- */
.nav-link.active { color: var(--primary); background: rgba(37, 96, 235, 0.08); font-weight: 600; }

/* ---------- 面包屑导航 ---------- */
.breadcrumb { padding-top: 96px; font-size: 13.5px; color: var(--text-light); }
.breadcrumb ol { display: flex; flex-wrap: wrap; gap: 8px; list-style: none; }
.breadcrumb li { display: flex; align-items: center; gap: 8px; }
.breadcrumb li + li::before { content: '/'; color: #CBD5E1; }
.breadcrumb a { color: var(--text-light); transition: color 0.2s; }
.breadcrumb a:hover { color: var(--primary); }
.breadcrumb [aria-current="page"] { color: var(--text); font-weight: 600; }

/* ---------- 内页头部 ---------- */
.page-hero {
  background: linear-gradient(180deg, #F0F5FF 0%, #F8FBFF 60%, #FFFFFF 100%);
  padding: 60px 0 50px;
  position: relative;
  overflow: hidden;
}
.page-hero::before {
  content: '';
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(37, 96, 235, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(37, 96, 235, 0.05) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse 70% 90% at 50% 0%, black, transparent);
  -webkit-mask-image: radial-gradient(ellipse 70% 90% at 50% 0%, black, transparent);
}
.page-hero-inner { position: relative; max-width: 860px; }
.page-hero h1 { font-size: clamp(30px, 4vw, 44px); font-weight: 800; color: var(--dark); line-height: 1.3; margin-bottom: 16px; }
.page-hero p { font-size: 16.5px; color: var(--text-light); line-height: 1.8; }

/* ---------- 区块底部按钮 ---------- */
.section-foot-cta { text-align: center; margin-top: 44px; }

/* ---------- 文本链接 ---------- */
.text-link { color: var(--primary); font-weight: 600; transition: color 0.2s; }
.text-link:hover { color: var(--primary-dark); text-decoration: underline; }

/* ---------- 首页「什么是」区块 ---------- */
.intro { background: var(--bg); }
.intro-grid { display: grid; grid-template-columns: 1.2fr 0.8fr; gap: 60px; align-items: center; }
.intro-text h2 { font-size: clamp(26px, 3vw, 34px); font-weight: 800; color: var(--dark); margin-bottom: 20px; line-height: 1.3; }
.intro-text p { font-size: 15.5px; color: var(--text-light); margin-bottom: 14px; line-height: 1.9; }
.intro-text p strong { color: var(--dark); font-weight: 700; }
.intro-points { display: flex; flex-direction: column; gap: 16px; }
.intro-points li {
  display: flex; align-items: center; gap: 16px;
  background: var(--bg-light);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 18px 22px;
  transition: all 0.3s ease;
}
.intro-points li:hover { transform: translateX(6px); box-shadow: var(--shadow-sm); }
.intro-points strong { display: block; font-size: 16px; color: var(--dark); }
.intro-points span { font-size: 13px; color: var(--text-light); }

/* ---------- 功能详情页 ---------- */
.feature-detail { background: var(--bg); }
.fd-item {
  display: grid;
  grid-template-columns: 72px 1fr;
  gap: 24px;
  padding: 40px 0;
  border-bottom: 1px solid var(--border);
}
.fd-item:last-child { border-bottom: none; }
.fd-icon {
  width: 64px; height: 64px;
  display: flex; align-items: center; justify-content: center;
  font-size: 30px;
  background: linear-gradient(135deg, rgba(37, 96, 235, 0.1), rgba(56, 189, 248, 0.1));
  border-radius: 16px;
}
.fd-body h2 { font-size: 24px; font-weight: 800; color: var(--dark); margin-bottom: 10px; }
.fd-body > p { font-size: 15px; color: var(--text-light); margin-bottom: 16px; line-height: 1.9; }
.fd-list { display: grid; grid-template-columns: 1fr 1fr; gap: 10px 24px; }
.fd-list li { font-size: 14.5px; color: var(--dark-2); display: flex; gap: 8px; align-items: flex-start; }
.fd-list li::before { content: '✓'; color: var(--success); font-weight: 700; flex-shrink: 0; }

/* ---------- 延伸阅读 ---------- */
.related { background: var(--bg-light); }
.related h2 { text-align: center; font-size: 26px; font-weight: 800; color: var(--dark); margin-bottom: 36px; }
.related-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.related-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 26px 24px;
  transition: all 0.3s ease;
  display: block;
}
.related-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-md); border-color: rgba(37, 96, 235, 0.3); }
.related-card h3 { font-size: 17px; font-weight: 700; color: var(--dark); margin-bottom: 8px; }
.related-card h3::after { content: ' →'; color: var(--primary); }
.related-card p { font-size: 13.5px; color: var(--text-light); line-height: 1.7; }

/* ---------- 模块说明 ---------- */
.module-detail { background: var(--bg); }
.mod-desc { font-size: 13.5px; color: var(--text-light); margin-bottom: 14px; line-height: 1.7; }
.module-tip, .more-help { background: var(--bg-light); }
.tip-box {
  background: #fff;
  border: 1px solid var(--border);
  border-left: 4px solid var(--primary);
  border-radius: 14px;
  padding: 34px 36px;
  max-width: 900px;
  margin: 0 auto;
}
.tip-box h2 { font-size: 22px; font-weight: 800; color: var(--dark); margin-bottom: 14px; }
.tip-box p { font-size: 15px; color: var(--text); line-height: 1.9; margin-bottom: 10px; }
.tip-box p:last-child { margin-bottom: 0; }
.tip-box strong { color: var(--dark); }

/* ---------- 解决方案详情页 ---------- */
.solution-detail { background: var(--bg); }
.sol-item { padding: 42px 0; border-bottom: 1px solid var(--border); }
.sol-item:last-child { border-bottom: none; }
.sol-head { display: flex; align-items: center; gap: 16px; margin-bottom: 14px; }
.sol-badge {
  flex-shrink: 0;
  background: var(--gradient);
  color: #fff;
  font-size: 13px;
  font-weight: 700;
  padding: 6px 18px;
  border-radius: 999px;
}
.sol-head h2 { font-size: 26px; font-weight: 800; color: var(--dark); }
.sol-lead { font-size: 15.5px; color: var(--text-light); margin-bottom: 24px; max-width: 780px; }
.sol-features { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-bottom: 22px; }
.sol-features div {
  background: var(--bg-light);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 18px;
}
.sol-features strong { display: block; font-size: 15px; color: var(--dark); margin-bottom: 6px; }
.sol-features span { font-size: 13px; color: var(--text-light); line-height: 1.6; }
.sol-value {
  display: inline-block;
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
  background: rgba(37, 96, 235, 0.07);
  padding: 8px 18px;
  border-radius: 999px;
}

/* ---------- 价格 FAQ ---------- */
.price-faq { background: var(--bg-light); }
.price-faq .section-head { margin-bottom: 40px; }

/* ---------- 关于我们 ---------- */
.about-intro { background: var(--bg); }
.about-grid { display: grid; grid-template-columns: 1.3fr 0.7fr; gap: 60px; align-items: center; }
.about-text h2 { font-size: clamp(26px, 3vw, 34px); font-weight: 800; color: var(--dark); margin-bottom: 20px; }
.about-text p { font-size: 15.5px; color: var(--text-light); margin-bottom: 16px; line-height: 1.9; }
.about-text p strong { color: var(--dark); }
.about-values { display: flex; flex-direction: column; gap: 14px; margin-top: 26px; }
.about-values li {
  display: flex; align-items: baseline; gap: 14px;
  background: var(--bg-light);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 16px 20px;
}
.about-values strong { flex-shrink: 0; font-size: 15px; color: var(--dark); }
.about-values span { font-size: 13.5px; color: var(--text-light); }
.about-card {
  background: linear-gradient(160deg, var(--dark) 0%, #1E3A8A 100%);
  border-radius: 20px;
  padding: 36px 30px;
  box-shadow: var(--shadow-lg);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}
.about-stat { text-align: center; }
.about-stat .stat-num { font-size: 34px; }
.about-stat > span:last-child { display: block; color: #94A3B8; font-size: 13.5px; margin-top: 4px; }

/* ---------- 发展历程 ---------- */
.timeline-sec { background: var(--bg-light); }
.timeline {
  max-width: 760px;
  margin: 0 auto;
  position: relative;
  padding-left: 30px;
}
.timeline::before {
  content: '';
  position: absolute;
  left: 6px; top: 0; bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, var(--primary), var(--accent));
  border-radius: 2px;
}
.timeline-item { position: relative; padding: 0 0 34px 24px; }
.timeline-item:last-child { padding-bottom: 0; }
.timeline-item::before {
  content: '';
  position: absolute;
  left: -30px; top: 6px;
  width: 14px; height: 14px;
  border-radius: 50%;
  background: #fff;
  border: 3px solid var(--primary);
}
.tl-year {
  display: inline-block;
  font-size: 13px;
  font-weight: 800;
  color: var(--primary);
  background: rgba(37, 96, 235, 0.08);
  padding: 4px 14px;
  border-radius: 999px;
  margin-bottom: 10px;
}
.timeline-item h3 { font-size: 18px; font-weight: 700; color: var(--dark); margin-bottom: 6px; }
.timeline-item p { font-size: 14.5px; color: var(--text-light); }

/* ---------- 试用流程 ---------- */
.process { background: var(--bg); }
.process-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.process-step {
  text-align: center;
  background: var(--bg-light);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 32px 24px;
  transition: all 0.3s ease;
}
.process-step:hover { transform: translateY(-5px); box-shadow: var(--shadow-md); }
.step-no {
  display: flex; align-items: center; justify-content: center;
  width: 48px; height: 48px;
  margin: 0 auto 16px;
  background: var(--gradient);
  color: #fff;
  font-size: 20px;
  font-weight: 800;
  border-radius: 50%;
  box-shadow: 0 6px 16px rgba(37, 96, 235, 0.3);
}
.process-step h3 { font-size: 17px; font-weight: 700; color: var(--dark); margin-bottom: 8px; }
.process-step p { font-size: 13.5px; color: var(--text-light); }

/* ---------- 联系页补充 ---------- */
.contact-faq-link { margin-top: 30px; }
.contact-faq-link p { font-size: 14.5px; color: var(--text-light); }

/* ---------- 内页响应式 ---------- */
@media (max-width: 1024px) {
  .related-grid { grid-template-columns: repeat(2, 1fr); }
  .sol-features { grid-template-columns: repeat(2, 1fr); }
  .process-grid { grid-template-columns: repeat(2, 1fr); }
  .intro-grid { grid-template-columns: 1fr; gap: 40px; }
  .about-grid { grid-template-columns: 1fr; gap: 40px; }
}

@media (max-width: 768px) {
  .breadcrumb { padding-top: 88px; }
  .page-hero { padding: 44px 0 38px; }
  .fd-item { grid-template-columns: 1fr; gap: 14px; }
  .fd-list { grid-template-columns: 1fr; }
  .about-values li { flex-direction: column; gap: 4px; }
}

@media (max-width: 480px) {
  .related-grid { grid-template-columns: 1fr; }
  .sol-features { grid-template-columns: 1fr; }
  .process-grid { grid-template-columns: 1fr; }
  .about-card { grid-template-columns: 1fr 1fr; gap: 18px; }
}