/* =====================================================
   随行付蓝牙POS官网 - 共享样式文件
   科技活力风格 | 智能匹配+免费送 | #0891B2科技蓝
   ===================================================== */

/* ==================== CSS变量 ==================== */
:root {
  --primary: #0891B2;
  --primary-dark: #0E7490;
  --secondary: #164E63;
  --accent: #06B6D4;
  --accent-dark: #0891B2;
  --gold: #F59E0B;
  --gold-light: #FCD34D;
  --bg-light: #F0FDFA;
  --bg-white: #FFFFFF;
  --text-dark: #1A1A1A;
  --text-muted: #666666;
  --text-light: #999999;
  --border: #E5E7EB;
  --border-light: #E0F7FA;
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 20px rgba(0,0,0,0.12);
  --shadow-lg: 0 8px 40px rgba(0,0,0,0.16);
  --shadow-glow: 0 0 30px rgba(6,182,212,0.3);
  --radius: 12px;
  --radius-sm: 8px;
  --radius-lg: 20px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ==================== 基础重置 ==================== */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  color: var(--text-dark);
  background: var(--bg-white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* ==================== 滚动条样式 ==================== */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: #f1f1f1; }
::-webkit-scrollbar-thumb { background: var(--primary); border-radius: 3px; }

/* ==================== 通用容器 ==================== */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

.container-sm {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 20px;
}

.section {
  padding: 80px 0;
}

.section-sm {
  padding: 60px 0;
}

/* ==================== 通用标题 ==================== */
.section-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(6,182,212,0.1);
  color: var(--primary);
  padding: 6px 16px;
  border-radius: 50px;
  font-size: 0.85rem;
  font-weight: 500;
  margin-bottom: 16px;
}

.section-title {
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--text-dark);
  line-height: 1.3;
  margin-bottom: 12px;
}

.section-subtitle {
  font-size: 1.05rem;
  color: var(--text-muted);
  line-height: 1.7;
  max-width: 600px;
}

.text-center { text-align: center; }
.text-center .section-subtitle { margin: 0 auto; }

/* ==================== 导航栏 ==================== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: 72px;
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid transparent;
  transition: var(--transition);
}

.navbar.scrolled {
  background: rgba(255,255,255,0.98);
  border-bottom-color: rgba(6,182,212,0.1);
  box-shadow: 0 2px 20px rgba(0,0,0,0.08);
}

.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  flex-shrink: 0;
}

.nav-logo-icon {
  width: 38px;
  height: 38px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  color: white;
  font-weight: 700;
  box-shadow: 0 4px 12px rgba(8,145,178,0.3);
}

.nav-logo-text {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--secondary);
  letter-spacing: -0.5px;
}

.nav-logo-text span {
  color: var(--primary);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 8px;
  list-style: none;
}

.nav-links a {
  text-decoration: none;
  color: var(--text-muted);
  font-size: 0.95rem;
  font-weight: 500;
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  transition: var(--transition);
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--primary);
  background: rgba(8,145,178,0.06);
}

.nav-cta {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: linear-gradient(135deg, var(--gold), #D97706);
  color: white !important;
  font-weight: 600;
  padding: 10px 22px !important;
  border-radius: 50px !important;
  box-shadow: 0 4px 15px rgba(245,158,11,0.35);
  transition: var(--transition);
  white-space: nowrap;
}

.nav-cta:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(245,158,11,0.45);
  background: linear-gradient(135deg, var(--gold-light), var(--gold)) !important;
  color: white !important;
}

/* 汉堡菜单按钮 */
.nav-hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 8px;
  border: none;
  background: none;
  z-index: 1001;
}

.nav-hamburger span {
  width: 24px;
  height: 2px;
  background: var(--text-dark);
  border-radius: 2px;
  transition: var(--transition);
}

.nav-hamburger.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.nav-hamburger.active span:nth-child(2) {
  opacity: 0;
}

.nav-hamburger.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* 移动端菜单 */
.nav-mobile {
  display: none;
  position: fixed;
  top: 72px;
  left: 0;
  right: 0;
  background: rgba(255,255,255,0.98);
  backdrop-filter: blur(20px);
  padding: 20px;
  box-shadow: 0 8px 30px rgba(0,0,0,0.1);
  border-top: 1px solid var(--border-light);
}

.nav-mobile.open {
  display: block;
}

.nav-mobile a {
  display: block;
  padding: 14px 16px;
  color: var(--text-dark);
  text-decoration: none;
  font-weight: 500;
  border-radius: var(--radius-sm);
  transition: var(--transition);
}

.nav-mobile a:hover {
  background: var(--bg-light);
  color: var(--primary);
}

/* ==================== 页脚 ==================== */
.footer {
  background: var(--secondary);
  color: rgba(255,255,255,0.85);
  padding: 60px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}

.footer-brand-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
}

.footer-logo-icon {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  color: white;
  font-weight: 700;
}

.footer-logo-text {
  font-size: 1.2rem;
  font-weight: 700;
  color: white;
}

.footer-brand-desc {
  font-size: 0.9rem;
  line-height: 1.7;
  color: rgba(255,255,255,0.65);
  margin-bottom: 20px;
}

.footer-social {
  display: flex;
  gap: 12px;
}

.footer-social a {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(255,255,255,0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255,255,255,0.7);
  text-decoration: none;
  font-size: 0.85rem;
  transition: var(--transition);
}

.footer-social a:hover {
  background: var(--primary);
  color: white;
}

.footer-col h4 {
  font-size: 0.95rem;
  font-weight: 600;
  color: white;
  margin-bottom: 16px;
}

.footer-col ul {
  list-style: none;
}

.footer-col li {
  margin-bottom: 10px;
}

.footer-col a {
  color: rgba(255,255,255,0.65);
  text-decoration: none;
  font-size: 0.88rem;
  transition: var(--transition);
  display: flex;
  align-items: center;
  gap: 6px;
}

.footer-col a:hover {
  color: var(--accent);
}

.footer-bottom {
  padding: 20px 0;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.footer-bottom p,
.footer-bottom span {
  font-size: 0.82rem;
  color: rgba(255,255,255,0.45);
}

.footer-bottom a {
  color: rgba(255,255,255,0.55);
  text-decoration: none;
  transition: var(--transition);
}

.footer-bottom a:hover {
  color: var(--accent);
}

/* ==================== 按钮 ==================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: 50px;
  font-size: 1rem;
  font-weight: 600;
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, var(--gold), #D97706);
  color: white;
  box-shadow: 0 4px 15px rgba(245,158,11,0.35);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(245,158,11,0.45);
}

.btn-secondary {
  background: transparent;
  color: white;
  border: 2px solid rgba(255,255,255,0.4);
}

.btn-secondary:hover {
  background: rgba(255,255,255,0.1);
  border-color: rgba(255,255,255,0.7);
}

.btn-outline {
  background: transparent;
  color: var(--primary);
  border: 2px solid var(--primary);
}

.btn-outline:hover {
  background: var(--primary);
  color: white;
}

.btn-lg {
  padding: 16px 40px;
  font-size: 1.05rem;
}

.btn-sm {
  padding: 10px 20px;
  font-size: 0.88rem;
}

/* ==================== 卡片 ==================== */
.card {
  background: var(--bg-white);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-light);
  padding: 28px;
  transition: var(--transition);
}

.card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}

.card-accent {
  border-color: rgba(6,182,212,0.2);
  background: linear-gradient(135deg, rgba(6,182,212,0.03), rgba(8,145,178,0.03));
}

.card-gold {
  border-color: rgba(245,158,11,0.2);
  background: linear-gradient(135deg, rgba(245,158,11,0.03), rgba(217,119,6,0.03));
}

/* ==================== 标签/徽章 ==================== */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 12px;
  border-radius: 50px;
  font-size: 0.78rem;
  font-weight: 600;
}

.tag-primary {
  background: rgba(8,145,178,0.1);
  color: var(--primary);
}

.tag-gold {
  background: rgba(245,158,11,0.1);
  color: var(--gold);
}

.tag-accent {
  background: rgba(6,182,212,0.1);
  color: var(--accent-dark);
}

.tag-success {
  background: rgba(16,185,129,0.1);
  color: #10B981;
}

/* ==================== 页面标题区 ==================== */
.page-header {
  padding: 130px 0 60px;
  background: linear-gradient(135deg, var(--secondary), var(--primary));
  color: white;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.page-header::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(6,182,212,0.15), transparent 70%);
  border-radius: 50%;
}

.page-header h1 {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 10px;
  position: relative;
}

.page-header p {
  font-size: 1.05rem;
  color: rgba(255,255,255,0.8);
  position: relative;
}

/* ==================== Hero区 ==================== */
.hero {
  min-height: 100vh;
  background: linear-gradient(135deg, var(--secondary) 0%, var(--primary) 60%, var(--accent) 100%);
  color: white;
  display: flex;
  align-items: center;
  padding-top: 72px;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -100px;
  right: -150px;
  width: 700px;
  height: 700px;
  background: radial-gradient(circle, rgba(6,182,212,0.2), transparent 65%);
  border-radius: 50%;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -200px;
  left: -100px;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(245,158,11,0.1), transparent 65%);
  border-radius: 50%;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 720px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(245,158,11,0.2);
  border: 1px solid rgba(245,158,11,0.4);
  color: var(--gold-light);
  padding: 8px 20px;
  border-radius: 50px;
  font-size: 0.88rem;
  font-weight: 600;
  margin-bottom: 28px;
  backdrop-filter: blur(10px);
}

.hero h1 {
  font-size: 3.2rem;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 20px;
  letter-spacing: -1px;
}

.hero h1 .gold {
  color: var(--gold-light);
}

.hero h1 .highlight {
  background: rgba(255,255,255,0.15);
  padding: 2px 10px;
  border-radius: 6px;
}

.hero-subtitle {
  font-size: 1.15rem;
  color: rgba(255,255,255,0.82);
  line-height: 1.8;
  margin-bottom: 40px;
  max-width: 580px;
}

.hero-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 60px;
}

.hero-stats {
  display: flex;
  gap: 40px;
  flex-wrap: wrap;
}

.hero-stat {
  text-align: left;
}

.hero-stat-value {
  font-family: 'Barlow', 'Roboto', sans-serif;
  font-size: 2.4rem;
  font-weight: 700;
  color: var(--gold-light);
  line-height: 1;
}

.hero-stat-label {
  font-size: 0.88rem;
  color: rgba(255,255,255,0.7);
  margin-top: 4px;
}

/* Hero波浪蓝牙信号 */
.hero-wave {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 120px;
  overflow: hidden;
  z-index: 1;
}

.hero-wave svg {
  width: 100%;
  height: 100%;
}

/* Hero右侧装饰 */
.hero-visual {
  position: absolute;
  right: -5%;
  top: 50%;
  transform: translateY(-50%);
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero-pos-visual {
  width: 380px;
  height: 380px;
  border-radius: 50%;
  background: radial-gradient(circle at 40% 40%, rgba(6,182,212,0.2), rgba(8,145,178,0.05));
  border: 1px solid rgba(6,182,212,0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.hero-pos-visual::before {
  content: '';
  position: absolute;
  inset: -20px;
  border-radius: 50%;
  border: 1px dashed rgba(6,182,212,0.2);
  animation: spin 30s linear infinite;
}

.hero-pos-emoji {
  font-size: 6rem;
  filter: drop-shadow(0 10px 30px rgba(0,0,0,0.3));
}

/* 蓝牙弧线 */
.bluetooth-arcs {
  position: absolute;
  inset: -60px;
  pointer-events: none;
}

.bluetooth-arcs svg {
  width: 100%;
  height: 100%;
  animation: pulse-glow 3s ease-in-out infinite;
}

@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

@keyframes pulse-glow {
  0%, 100% { opacity: 0.4; }
  50% { opacity: 0.8; }
}

/* ==================== 差异化核心区 ==================== */
.core-section {
  padding: 80px 0;
  background: var(--bg-light);
}

.core-section.alt {
  background: var(--bg-white);
}

/* AI智能匹配区 */
.ai-match-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
  margin-top: 50px;
}

.ai-match-info h3 {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 16px;
  color: var(--secondary);
}

.ai-match-info p {
  color: var(--text-muted);
  line-height: 1.8;
  font-size: 0.95rem;
}

.ai-match-flow {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  margin-top: 30px;
}

.flow-step {
  text-align: center;
  padding: 16px 8px;
  background: white;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-light);
  position: relative;
}

.flow-step::after {
  content: '→';
  position: absolute;
  right: -18px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--primary);
  font-size: 1.2rem;
  font-weight: 700;
}

.flow-step:last-child::after {
  display: none;
}

.flow-step-num {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--primary);
  color: white;
  font-size: 0.8rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 8px;
}

.flow-step-text {
  font-size: 0.8rem;
  color: var(--text-dark);
  font-weight: 600;
  line-height: 1.4;
}

.ai-match-alert {
  background: #FEF3C7;
  border: 1px solid #FDE68A;
  border-radius: var(--radius);
  padding: 20px;
  margin-top: 24px;
}

.ai-match-alert h4 {
  font-size: 0.9rem;
  font-weight: 700;
  color: #92400E;
  margin-bottom: 8px;
}

.ai-match-alert p {
  font-size: 0.85rem;
  color: #78350F;
  line-height: 1.7;
}

.ai-match-benefits {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.ai-benefit {
  padding: 24px;
  background: white;
  border-radius: var(--radius);
  border: 1px solid var(--border-light);
  transition: var(--transition);
}

.ai-benefit:hover {
  border-color: var(--primary);
  box-shadow: 0 4px 16px rgba(8,145,178,0.1);
}

.ai-benefit-num {
  font-family: 'Barlow', sans-serif;
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 6px;
}

.ai-benefit-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 4px;
}

.ai-benefit-desc {
  font-size: 0.82rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* 免费送对比区 */
.free-compare {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-top: 40px;
}

.compare-card {
  padding: 32px;
  border-radius: var(--radius-lg);
  border: 2px solid;
}

.compare-card.normal {
  background: #F9FAFB;
  border-color: #E5E7EB;
}

.compare-card.sxf {
  background: linear-gradient(135deg, rgba(8,145,178,0.05), rgba(6,182,212,0.05));
  border-color: rgba(8,145,178,0.3);
}

.compare-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.compare-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 0;
  border-bottom: 1px solid rgba(0,0,0,0.05);
  font-size: 0.92rem;
}

.compare-item:last-child {
  border-bottom: none;
}

.compare-item .icon {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.7rem;
  flex-shrink: 0;
}

.compare-item .icon.bad {
  background: #FEE2E2;
  color: #EF4444;
}

.compare-item .icon.good {
  background: rgba(8,145,178,0.1);
  color: var(--primary);
}

.compare-item .icon.gold {
  background: rgba(245,158,11,0.1);
  color: var(--gold);
}

.free-reason {
  margin-top: 32px;
  padding: 24px;
  background: linear-gradient(135deg, rgba(8,145,178,0.06), rgba(6,182,212,0.06));
  border-radius: var(--radius);
  border-left: 4px solid var(--primary);
}

.free-reason h4 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--secondary);
  margin-bottom: 8px;
}

.free-reason p {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.7;
}

/* ==================== 产品卡片 ==================== */
.products-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 50px;
}

.product-card {
  background: white;
  border-radius: var(--radius-lg);
  border: 2px solid var(--border-light);
  padding: 32px 24px;
  text-align: center;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.product-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  opacity: 0;
  transition: var(--transition);
}

.product-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-6px);
  border-color: var(--primary);
}

.product-card:hover::before {
  opacity: 1;
}

.product-card.featured {
  border-color: var(--gold);
  box-shadow: 0 4px 24px rgba(245,158,11,0.15);
}

.product-card.featured::before {
  opacity: 1;
  background: linear-gradient(90deg, var(--gold), #D97706);
}

.product-badge {
  position: absolute;
  top: 16px;
  right: 16px;
}

.product-icon {
  font-size: 4rem;
  margin-bottom: 16px;
  display: block;
}

.product-name {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 4px;
}

.product-model {
  font-size: 0.82rem;
  color: var(--text-light);
  margin-bottom: 16px;
}

.product-features {
  list-style: none;
  text-align: left;
  margin: 16px 0;
}

.product-features li {
  padding: 6px 0;
  font-size: 0.88rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 8px;
  border-bottom: 1px solid rgba(0,0,0,0.04);
}

.product-features li:last-child {
  border-bottom: none;
}

.product-features li::before {
  content: '✓';
  color: var(--primary);
  font-weight: 700;
  flex-shrink: 0;
}

.product-price {
  margin: 16px 0;
}

.product-price .price {
  font-family: 'Barlow', sans-serif;
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--gold);
}

.product-price .unit {
  font-size: 0.82rem;
  color: var(--text-light);
}

.product-tags-bar {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px;
  margin-top: 24px;
  padding-top: 24px;
  border-top: 1px solid var(--border-light);
}

/* ==================== 评价轮播 ==================== */
.testimonials-wrapper {
  position: relative;
  overflow: hidden;
  margin-top: 50px;
}

.testimonials-track {
  display: flex;
  transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.testimonial-card {
  min-width: 100%;
  padding: 0 60px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.testimonial-item {
  background: white;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-light);
  padding: 28px;
  box-shadow: var(--shadow-sm);
}

.testimonial-stars {
  color: var(--gold);
  font-size: 0.9rem;
  margin-bottom: 12px;
}

.testimonial-text {
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.8;
  margin-bottom: 16px;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 10px;
}

.testimonial-avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  font-weight: 700;
}

.testimonial-name {
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--text-dark);
}

.testimonial-role {
  font-size: 0.78rem;
  color: var(--text-light);
}

.testimonials-dots {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 24px;
}

.testimonials-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--border);
  border: none;
  cursor: pointer;
  transition: var(--transition);
}

.testimonials-dot.active {
  width: 24px;
  border-radius: 4px;
  background: var(--primary);
}

/* ==================== 场景卡片 ==================== */
.scenarios-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
  margin-top: 50px;
}

.scenario-card {
  background: white;
  border-radius: var(--radius);
  border: 1px solid var(--border-light);
  padding: 24px 16px;
  text-align: center;
  transition: var(--transition);
  cursor: default;
}

.scenario-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
  border-color: var(--primary);
}

.scenario-icon {
  font-size: 2.4rem;
  margin-bottom: 12px;
  display: block;
}

.scenario-title {
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 6px;
}

.scenario-desc {
  font-size: 0.78rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 12px;
}

.scenario-tag {
  font-size: 0.72rem;
  padding: 3px 10px;
  background: rgba(8,145,178,0.08);
  color: var(--primary);
  border-radius: 50px;
  font-weight: 600;
}

/* ==================== AI计算器 ==================== */
.calculator-section {
  background: linear-gradient(135deg, var(--secondary), var(--primary));
  padding: 80px 0;
  color: white;
}

.calculator-section .section-title,
.calculator-section .section-subtitle {
  color: white;
}

.calculator-section .section-subtitle {
  opacity: 0.8;
}

.calc-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  margin-top: 50px;
  align-items: start;
}

.calc-input-card {
  background: rgba(255,255,255,0.1);
  backdrop-filter: blur(10px);
  border-radius: var(--radius-lg);
  padding: 32px;
  border: 1px solid rgba(255,255,255,0.15);
}

.calc-input-card label {
  display: block;
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 8px;
  opacity: 0.9;
}

.calc-input-group {
  margin-bottom: 28px;
}

.calc-input-group input[type="range"] {
  width: 100%;
  -webkit-appearance: none;
  appearance: none;
  height: 6px;
  border-radius: 3px;
  background: rgba(255,255,255,0.2);
  outline: none;
  margin: 12px 0;
}

.calc-input-group input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--gold);
  cursor: pointer;
  box-shadow: 0 2px 8px rgba(245,158,11,0.4);
}

.calc-value {
  font-family: 'Barlow', sans-serif;
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--gold-light);
}

.calc-value-label {
  font-size: 0.82rem;
  opacity: 0.7;
}

.calc-result-card {
  background: rgba(255,255,255,0.15);
  backdrop-filter: blur(10px);
  border-radius: var(--radius-lg);
  padding: 32px;
  border: 1px solid rgba(255,255,255,0.2);
}

.calc-result-item {
  padding: 16px 0;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}

.calc-result-item:last-child {
  border-bottom: none;
}

.calc-result-label {
  font-size: 0.85rem;
  opacity: 0.75;
  margin-bottom: 6px;
}

.calc-result-value {
  font-family: 'Barlow', sans-serif;
  font-size: 1.5rem;
  font-weight: 700;
}

.calc-result-value.bad {
  color: #FCA5A5;
}

.calc-result-value.good {
  color: #6EE7B7;
}

.calc-result-value.gold {
  color: var(--gold-light);
  font-size: 1.8rem;
}

.calc-result-note {
  font-size: 0.78rem;
  opacity: 0.6;
  margin-top: 4px;
  line-height: 1.5;
}

/* ==================== CTA底部区 ==================== */
.cta-section {
  padding: 80px 0;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: white;
  text-align: center;
}

.cta-section .section-title {
  color: white;
}

.cta-form {
  max-width: 700px;
  margin: 40px auto 0;
  background: rgba(255,255,255,0.1);
  backdrop-filter: blur(10px);
  border-radius: var(--radius-lg);
  padding: 40px;
  border: 1px solid rgba(255,255,255,0.15);
}

.cta-form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 16px;
}

.cta-form-full {
  grid-column: 1 / -1;
}

.form-input,
.form-select {
  width: 100%;
  padding: 13px 18px;
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: var(--radius-sm);
  background: rgba(255,255,255,0.1);
  color: white;
  font-size: 0.95rem;
  font-family: inherit;
  outline: none;
  transition: var(--transition);
}

.form-input::placeholder {
  color: rgba(255,255,255,0.5);
}

.form-input:focus,
.form-select:focus {
  border-color: var(--accent);
  background: rgba(255,255,255,0.15);
}

.form-select option {
  background: var(--secondary);
  color: white;
}

.cta-form .btn {
  width: 100%;
  margin-top: 16px;
  padding: 16px;
  font-size: 1.05rem;
}

.cta-note {
  margin-top: 16px;
  font-size: 0.82rem;
  opacity: 0.65;
  display: flex;
  justify-content: center;
  gap: 20px;
  flex-wrap: wrap;
}

.cta-note span {
  display: flex;
  align-items: center;
  gap: 4px;
}

/* ==================== 承诺卡片 ==================== */
.promises-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
  margin-top: 50px;
}

.promise-card {
  background: white;
  border-radius: var(--radius);
  border: 1px solid var(--border-light);
  padding: 24px 16px;
  text-align: center;
  transition: var(--transition);
}

.promise-card:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}

.promise-icon {
  font-size: 2.2rem;
  margin-bottom: 12px;
  display: block;
}

.promise-num {
  font-family: 'Barlow', sans-serif;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 6px;
}

.promise-title {
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 6px;
}

.promise-desc {
  font-size: 0.78rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* ==================== 入驻流程 ==================== */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 50px;
}

.step-card {
  background: white;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-light);
  padding: 32px 24px;
  text-align: center;
  position: relative;
  transition: var(--transition);
}

.step-card:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--primary);
}

.step-num-badge {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: white;
  font-family: 'Barlow', sans-serif;
  font-size: 1.4rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
  box-shadow: 0 4px 16px rgba(8,145,178,0.3);
}

.step-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 8px;
}

.step-desc {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.7;
}

.step-time {
  margin-top: 12px;
  font-size: 0.78rem;
  color: var(--primary);
  font-weight: 600;
  background: rgba(8,145,178,0.08);
  padding: 4px 12px;
  border-radius: 50px;
  display: inline-block;
}

.requirements-box {
  background: rgba(8,145,178,0.05);
  border: 1px solid rgba(8,145,178,0.15);
  border-radius: var(--radius);
  padding: 20px 28px;
  margin-top: 40px;
  text-align: center;
}

.requirements-box h4 {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--secondary);
  margin-bottom: 12px;
}

.requirements-list {
  display: flex;
  justify-content: center;
  gap: 24px;
  flex-wrap: wrap;
}

.req-item {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.88rem;
  color: var(--text-muted);
}

.req-item::before {
  content: '📋';
  font-size: 1rem;
}

/* ==================== 产品详情区 ==================== */
.product-detail {
  padding: 80px 0;
  border-bottom: 1px solid var(--border-light);
}

.product-detail:last-of-type {
  border-bottom: none;
}

.product-detail-grid {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 60px;
  align-items: start;
}

.product-detail-visual {
  text-align: center;
}

.product-detail-icon {
  font-size: 8rem;
  display: block;
  margin-bottom: 20px;
  filter: drop-shadow(0 10px 30px rgba(0,0,0,0.1));
}

.product-detail-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
}

.product-detail-info h3 {
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 4px;
}

.product-detail-model {
  font-size: 0.88rem;
  color: var(--text-light);
  margin-bottom: 12px;
}

.product-detail-tagline {
  font-size: 0.95rem;
  color: var(--primary);
  font-weight: 600;
  margin-bottom: 20px;
}

.product-params {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-bottom: 20px;
}

.param-item {
  padding: 12px 16px;
  background: var(--bg-light);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  gap: 8px;
}

.param-icon {
  font-size: 1.2rem;
  flex-shrink: 0;
}

.param-text {
  font-size: 0.82rem;
  color: var(--text-muted);
  line-height: 1.4;
}

.param-text strong {
  display: block;
  color: var(--text-dark);
  font-size: 0.85rem;
}

.product-for {
  padding: 14px;
  background: rgba(245,158,11,0.05);
  border: 1px solid rgba(245,158,11,0.15);
  border-radius: var(--radius-sm);
  margin-bottom: 20px;
}

.product-for p {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.product-for strong {
  color: var(--text-dark);
}

.product-price-note {
  padding: 14px;
  background: rgba(8,145,178,0.05);
  border: 1px solid rgba(8,145,178,0.15);
  border-radius: var(--radius-sm);
  margin-bottom: 20px;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.product-price-note strong {
  color: var(--gold);
}

/* ==================== 参数对比表 ==================== */
.compare-table-wrapper {
  overflow-x: auto;
  margin-top: 50px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-light);
  box-shadow: var(--shadow-sm);
}

.compare-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.88rem;
}

.compare-table thead {
  background: linear-gradient(135deg, var(--secondary), var(--primary));
  color: white;
}

.compare-table th {
  padding: 16px 20px;
  font-weight: 700;
  text-align: center;
  font-size: 0.92rem;
}

.compare-table th:first-child {
  text-align: left;
}

.compare-table td {
  padding: 14px 20px;
  text-align: center;
  border-bottom: 1px solid var(--border-light);
  color: var(--text-muted);
}

.compare-table td:first-child {
  text-align: left;
  font-weight: 600;
  color: var(--text-dark);
  background: rgba(8,145,178,0.03);
}

.compare-table tr:last-child td {
  border-bottom: none;
}

.compare-table tr:hover td {
  background: rgba(8,145,178,0.03);
}

.compare-table .cell-check {
  color: var(--primary);
  font-size: 1.1rem;
}

.compare-table .cell-cross {
  color: #E5E7EB;
  font-size: 1.1rem;
}

.compare-table .cell-gold {
  background: rgba(245,158,11,0.05);
  font-weight: 600;
  color: var(--gold);
}

/* ==================== 场景卡片(解决方案页) ==================== */
.scene-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 50px;
}

.scene-card {
  background: white;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-light);
  padding: 28px;
  transition: var(--transition);
}

.scene-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
  border-color: var(--primary);
}

.scene-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}

.scene-icon {
  font-size: 2rem;
}

.scene-name {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-dark);
}

.scene-pain h4,
.scene-solution h4 {
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--text-light);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 8px;
}

.scene-pain-points {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 16px;
}

.pain-tag {
  font-size: 0.75rem;
  padding: 3px 10px;
  background: #FEF2F2;
  color: #EF4444;
  border-radius: 50px;
}

.scene-solution-points {
  margin-bottom: 16px;
}

.sol-point {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.82rem;
  color: var(--text-muted);
  padding: 4px 0;
}

.sol-point::before {
  content: '✓';
  color: var(--primary);
  font-weight: 700;
}

.scene-product {
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--border-light);
  font-size: 0.82rem;
  color: var(--text-light);
}

.scene-product strong {
  color: var(--primary);
}

/* ==================== FAQ手风琴 ==================== */
.faq-list {
  max-width: 800px;
  margin: 50px auto 0;
}

.faq-item {
  border: 1px solid var(--border-light);
  border-radius: var(--radius);
  margin-bottom: 12px;
  overflow: hidden;
  background: white;
  transition: var(--transition);
}

.faq-item:hover {
  border-color: var(--primary);
}

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 24px;
  cursor: pointer;
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--text-dark);
  user-select: none;
  transition: var(--transition);
}

.faq-question:hover {
  color: var(--primary);
}

.faq-toggle {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: rgba(8,145,178,0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  color: var(--primary);
  transition: var(--transition);
  flex-shrink: 0;
}

.faq-item.open .faq-toggle {
  transform: rotate(180deg);
  background: var(--primary);
  color: white;
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

.faq-item.open .faq-answer {
  max-height: 300px;
}

.faq-answer-inner {
  padding: 0 24px 18px;
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.8;
}

/* ==================== 关于页专属 ==================== */
.values-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 20px;
  margin-top: 50px;
}

.value-card {
  text-align: center;
  padding: 32px 16px;
  background: white;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-light);
  transition: var(--transition);
}

.value-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
  border-color: var(--primary);
}

.value-icon {
  font-size: 2.4rem;
  margin-bottom: 12px;
  display: block;
}

.value-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 6px;
}

.value-desc {
  font-size: 0.78rem;
  color: var(--text-muted);
  line-height: 1.6;
}

.philosophy-section {
  background: var(--bg-light);
  padding: 80px 0;
}

.philosophy-content {
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
}

.philosophy-text {
  font-size: 1.1rem;
  color: var(--text-muted);
  line-height: 2;
  margin-bottom: 40px;
}

.philosophy-text strong {
  color: var(--primary);
}

.philosophy-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.philosophy-stat {
  background: white;
  border-radius: var(--radius);
  padding: 24px;
  text-align: center;
  box-shadow: var(--shadow-sm);
}

.philosophy-stat-value {
  font-family: 'Barlow', sans-serif;
  font-size: 2rem;
  font-weight: 700;
  color: var(--primary);
}

.philosophy-stat-label {
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-top: 4px;
}

.promises-wall {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
  margin-top: 50px;
}

.promise-wall-item {
  background: white;
  border-radius: var(--radius);
  border: 1px solid var(--border-light);
  padding: 20px 14px;
  text-align: center;
  transition: var(--transition);
}

.promise-wall-item:hover {
  border-color: var(--gold);
  box-shadow: 0 4px 16px rgba(245,158,11,0.1);
}

.promise-wall-icon {
  font-size: 1.8rem;
  margin-bottom: 8px;
}

.promise-wall-text {
  font-size: 0.82rem;
  color: var(--text-muted);
  line-height: 1.6;
}

.certs-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 40px;
}

.cert-card {
  background: white;
  border-radius: var(--radius);
  border: 1px solid var(--border-light);
  padding: 32px;
  text-align: center;
  transition: var(--transition);
}

.cert-card:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--primary);
}

.cert-icon {
  font-size: 3rem;
  margin-bottom: 12px;
  display: block;
}

.cert-name {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-dark);
}

.cert-desc {
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-top: 4px;
}

/* ==================== 申请表单页 ==================== */
.apply-form-section {
  background: white;
  padding: 80px 0;
}

.apply-form-wrapper {
  max-width: 700px;
  margin: 0 auto;
}

.apply-form {
  background: white;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-light);
  padding: 40px;
  box-shadow: var(--shadow-sm);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 16px;
}

.form-group {
  margin-bottom: 16px;
}

.form-group label {
  display: block;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-dark);
  margin-bottom: 6px;
}

.form-group label .required {
  color: #EF4444;
  margin-left: 2px;
}

.form-input-full,
.form-select-full,
.form-textarea {
  width: 100%;
  padding: 13px 18px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-family: inherit;
  color: var(--text-dark);
  outline: none;
  transition: var(--transition);
}

.form-input-full:focus,
.form-select-full:focus,
.form-textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(8,145,178,0.1);
}

.form-select-full option {
  color: var(--text-dark);
}

.form-textarea {
  resize: vertical;
  min-height: 80px;
}

.form-submit {
  width: 100%;
  padding: 16px;
  margin-top: 8px;
  font-size: 1.05rem;
}

.form-success {
  text-align: center;
  padding: 40px;
}

.form-success-icon {
  font-size: 4rem;
  margin-bottom: 16px;
}

.form-success h3 {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 8px;
}

.form-success p {
  color: var(--text-muted);
}

/* ==================== AI匹配说明区 ==================== */
.ai-match-section {
  background: linear-gradient(180deg, var(--bg-light) 0%, white 100%);
  padding: 80px 0;
}

.ai-match-flow-large {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 0;
  margin-top: 50px;
  flex-wrap: wrap;
}

.ai-flow-large-item {
  text-align: center;
  padding: 24px 32px;
  flex: 1;
  min-width: 180px;
  max-width: 240px;
}

.ai-flow-large-icon {
  font-size: 3rem;
  margin-bottom: 12px;
  display: block;
}

.ai-flow-large-text {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-dark);
  line-height: 1.4;
}

.ai-flow-arrow {
  font-size: 1.5rem;
  color: var(--primary);
  flex-shrink: 0;
}

.ai-guarantees {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 40px;
}

.ai-guarantee {
  text-align: center;
  padding: 20px;
  background: white;
  border-radius: var(--radius);
  border: 1px solid var(--border-light);
}

.ai-guarantee-icon {
  font-size: 1.8rem;
  margin-bottom: 8px;
}

.ai-guarantee-text {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-dark);
}

/* ==================== 选购指南 ==================== */
.guide-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 40px;
}

.guide-card {
  background: white;
  border-radius: var(--radius);
  border: 1px solid var(--border-light);
  padding: 24px;
  transition: var(--transition);
}

.guide-card:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow-sm);
}

.guide-q {
  font-size: 0.88rem;
  color: var(--text-light);
  margin-bottom: 8px;
  font-weight: 600;
}

.guide-answer {
  font-size: 0.92rem;
  color: var(--text-dark);
  font-weight: 700;
  margin-bottom: 8px;
}

.guide-answer strong {
  color: var(--primary);
}

.guide-product {
  font-size: 0.82rem;
  color: var(--gold);
  font-weight: 600;
}

/* ==================== 数字滚动动画目标 ==================== */
.count-up {
  font-family: 'Barlow', 'Roboto', sans-serif;
}

/* ==================== 滚动渐入动画 ==================== */
.fade-up {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}

.fade-up.delay-1 { transition-delay: 0.1s; }
.fade-up.delay-2 { transition-delay: 0.2s; }
.fade-up.delay-3 { transition-delay: 0.3s; }
.fade-up.delay-4 { transition-delay: 0.4s; }
.fade-up.delay-5 { transition-delay: 0.5s; }

/* ==================== 响应式 ==================== */
@media (max-width: 1024px) {
  .hero-visual { display: none; }
  .hero h1 { font-size: 2.5rem; }
  .products-grid { grid-template-columns: repeat(2, 1fr); }
  .promises-grid { grid-template-columns: repeat(3, 1fr); }
  .values-grid { grid-template-columns: repeat(3, 1fr); }
  .philosophy-stats { grid-template-columns: repeat(2, 1fr); }
  .scenarios-grid { grid-template-columns: repeat(3, 1fr); }
  .ai-match-grid { grid-template-columns: 1fr; }
  .ai-guarantees { grid-template-columns: repeat(2, 1fr); }
  .calc-grid { grid-template-columns: 1fr; }
  .scene-grid { grid-template-columns: repeat(2, 1fr); }
  .product-detail-grid { grid-template-columns: 1fr; }
  .promises-wall { grid-template-columns: repeat(3, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 30px; }
}

@media (max-width: 768px) {
  .section { padding: 60px 0; }
  .section-title { font-size: 1.7rem; }
  .page-header h1 { font-size: 1.8rem; }
  .page-header { padding: 110px 0 50px; }

  .nav-links { display: none; }
  .nav-hamburger { display: flex; }
  .nav-cta { display: none; }

  .hero { min-height: auto; padding: 120px 0 60px; }
  .hero h1 { font-size: 2rem; }
  .hero-subtitle { font-size: 1rem; }
  .hero-stats { gap: 24px; }
  .hero-stat-value { font-size: 1.8rem; }

  .products-grid { grid-template-columns: 1fr; }
  .free-compare { grid-template-columns: 1fr; }
  .testimonial-card { grid-template-columns: 1fr; padding: 0 20px; }
  .testimonials-dots { margin-top: 16px; }

  .scenarios-grid { grid-template-columns: repeat(2, 1fr); }
  .ai-match-flow { grid-template-columns: repeat(2, 1fr); }
  .flow-step::after { display: none; }
  .ai-match-benefits { grid-template-columns: 1fr; }

  .steps-grid { grid-template-columns: 1fr; }
  .promises-grid { grid-template-columns: repeat(2, 1fr); }
  .values-grid { grid-template-columns: repeat(2, 1fr); }
  .philosophy-stats { grid-template-columns: repeat(2, 1fr); }
  .promises-wall { grid-template-columns: 1fr 1fr; }
  .certs-grid { grid-template-columns: 1fr; }
  .ai-guarantees { grid-template-columns: 1fr 1fr; }

  .scene-grid { grid-template-columns: 1fr; }
  .cta-form-grid { grid-template-columns: 1fr; }
  .apply-form { padding: 24px; }
  .form-row { grid-template-columns: 1fr; }
  .product-params { grid-template-columns: 1fr; }

  .footer-grid { grid-template-columns: 1fr; gap: 24px; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .footer-bottom p { text-align: center; }

  .ai-flow-arrow { display: none; }
  .ai-flow-large-item { max-width: 100%; }
}

@media (max-width: 480px) {
  .container { padding: 0 16px; }
  .scenarios-grid { grid-template-columns: 1fr; }
  .promises-grid { grid-template-columns: 1fr; }
  .values-grid { grid-template-columns: 1fr; }
  .philosophy-stats { grid-template-columns: 1fr 1fr; }
  .promises-wall { grid-template-columns: 1fr; }
  .ai-guarantees { grid-template-columns: 1fr; }
  .hero h1 { font-size: 1.7rem; }
  .hero-buttons { flex-direction: column; }
  .hero-buttons .btn { width: 100%; justify-content: center; }
  .guide-grid { grid-template-columns: 1fr; }
}