/* ============================================
   Hermes AI 销售大脑 · 官网样式
   设计参考：radnova.com + agent-chat.cn
   配色：紫色系 #6C63FF
   ============================================ */

/* --- 变量 --- */
:root {
  --primary: #6C63FF;
  --primary-dark: #5A52D5;
  --primary-light: #F0EFFF;
  --primary-gradient: linear-gradient(135deg, #6C63FF 0%, #4A4AFF 100%);
  --dark: #1A1A2E;
  --text: #4A4A6A;
  --text-light: #6B6B8A;
  --bg: #FFFFFF;
  --bg-light: #F8F9FF;
  --bg-alt: #F5F6FA;
  --border: #E8E8F0;
  --success: #22C55E;
  --warning: #F59E0B;
  --danger: #EF4444;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 2px 8px rgba(0,0,0,0.06);
  --shadow-lg: 0 8px 32px rgba(0,0,0,0.1);
  --shadow-hover: 0 8px 24px rgba(108, 99, 255, 0.15);
  --transition: all 0.3s ease;
  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --max-width: 1200px;
}

/* --- Reset --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: var(--font);
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; height: auto; display: block; }
ul { list-style: none; }

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

/* --- 导航栏 --- */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  transition: var(--transition);
}
.navbar.scrolled { box-shadow: 0 2px 20px rgba(0,0,0,0.06); }
.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}
.navbar .logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 700;
  color: var(--dark);
}
.navbar .logo .logo-icon {
  width: 36px;
  height: 36px;
  background: var(--primary-gradient);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 20px;
  font-weight: 800;
}
.navbar .nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
}
.navbar .nav-links a {
  color: var(--text);
  font-size: 15px;
  font-weight: 500;
  transition: var(--transition);
  position: relative;
}
.navbar .nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--primary);
  transition: var(--transition);
}
.navbar .nav-links a:hover { color: var(--primary); }
.navbar .nav-links a:hover::after { width: 100%; }
.navbar .nav-links a.active { color: var(--primary); }
.navbar .nav-links a.active::after { width: 100%; }
.navbar .nav-right { display: flex; align-items: center; gap: 12px; }

/* --- 汉堡菜单 --- */
.hamburger {
  display: none;
  flex-direction: column;
  cursor: pointer;
  gap: 5px;
  padding: 4px;
}
.hamburger span {
  width: 24px;
  height: 2px;
  background: var(--dark);
  border-radius: 2px;
  transition: var(--transition);
}
.hamburger.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* --- 按钮 --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  border: none;
  font-family: var(--font);
  white-space: nowrap;
}
.btn-primary {
  background: var(--primary-gradient);
  color: white;
  box-shadow: 0 4px 14px rgba(108, 99, 255, 0.3);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(108, 99, 255, 0.4);
}
.btn-secondary {
  background: white;
  color: var(--primary);
  border: 1.5px solid var(--primary);
}
.btn-secondary:hover {
  background: var(--primary-light);
  transform: translateY(-2px);
}
.btn-outline {
  background: transparent;
  color: white;
  border: 1.5px solid rgba(255,255,255,0.5);
}
.btn-outline:hover {
  border-color: white;
  background: rgba(255,255,255,0.1);
  transform: translateY(-2px);
}
.btn-sm { padding: 8px 18px; font-size: 14px; }
.btn-lg { padding: 16px 36px; font-size: 17px; }

/* --- Hero 区域 --- */
.hero {
  padding: 160px 0 100px;
  background: var(--primary-gradient);
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  background: rgba(255,255,255,0.05);
  pointer-events: none;
}
.hero::after {
  content: '';
  position: absolute;
  bottom: -30%;
  left: -10%;
  width: 400px;
  height: 400px;
  border-radius: 50%;
  background: rgba(255,255,255,0.03);
  pointer-events: none;
}
.hero .container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  position: relative;
  z-index: 1;
}
.hero-content h1 {
  font-size: 48px;
  font-weight: 700;
  color: white;
  line-height: 1.15;
  margin-bottom: 20px;
}
.hero-content p {
  font-size: 18px;
  color: rgba(255,255,255,0.85);
  line-height: 1.7;
  margin-bottom: 36px;
  max-width: 520px;
}
.hero-actions {
  display: flex;
  gap: 16px;
  margin-bottom: 48px;
  flex-wrap: wrap;
}
.hero-stats {
  display: flex;
  gap: 40px;
}
.hero-stats .stat {
  text-align: center;
}
.hero-stats .stat-number {
  font-size: 36px;
  font-weight: 700;
  color: white;
  display: block;
}
.hero-stats .stat-label {
  font-size: 14px;
  color: rgba(255,255,255,0.7);
  margin-top: 4px;
}
.hero-visual {
  display: flex;
  align-items: center;
  justify-content: center;
}
.hero-visual .hero-card {
  background: rgba(255,255,255,0.12);
  backdrop-filter: blur(16px);
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: 16px;
  padding: 32px;
  width: 100%;
  max-width: 480px;
}
.hero-visual .hero-card-title {
  color: white;
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 20px;
}
.hero-visual .agent-flow {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.hero-visual .agent-row {
  display: flex;
  gap: 24px;
  align-items: center;
  justify-content: center;
}
.hero-visual .agent-item {
  background: rgba(255,255,255,0.15);
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: 10px;
  padding: 12px 18px;
  text-align: center;
  min-width: 90px;
  transition: var(--transition);
}
.hero-visual .agent-item .agent-icon { font-size: 24px; display: block; margin-bottom: 4px; }
.hero-visual .agent-item .agent-name { font-size: 12px; color: rgba(255,255,255,0.9); font-weight: 500; }
.hero-visual .agent-item.highlight {
  background: rgba(255,255,255,0.25);
  border-color: rgba(255,255,255,0.4);
}
.hero-visual .agent-arrow {
  color: rgba(255,255,255,0.5);
  font-size: 18px;
}

/* --- 通用 Section --- */
.section {
  padding: 100px 0;
}
.section-header {
  text-align: center;
  margin-bottom: 60px;
}
.section-header h2 {
  font-size: 36px;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 16px;
}
.section-header p {
  font-size: 18px;
  color: var(--text-light);
  max-width: 600px;
  margin: 0 auto;
  line-height: 1.7;
}
.section-header .tag {
  display: inline-block;
  padding: 6px 16px;
  background: var(--primary-light);
  color: var(--primary);
  border-radius: 20px;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 16px;
}

/* --- 价值卡片 (3列) --- */
.values-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}
.value-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 40px 32px;
  transition: var(--transition);
  text-align: center;
}
.value-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-4px);
  border-color: var(--primary);
}
.value-card .icon {
  font-size: 48px;
  margin-bottom: 20px;
  display: block;
}
.value-card h3 {
  font-size: 20px;
  font-weight: 600;
  color: var(--dark);
  margin-bottom: 12px;
}
.value-card p {
  color: var(--text-light);
  font-size: 15px;
  line-height: 1.6;
  margin-bottom: 16px;
}
.value-card .quote {
  color: var(--primary);
  font-style: italic;
  font-size: 14px;
  border-top: 1px solid var(--border);
  padding-top: 16px;
}

/* --- 数据信任条 --- */
.trust-bar {
  background: var(--bg-light);
  padding: 60px 0;
}
.trust-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
  text-align: center;
}
.trust-stat .number {
  font-size: 44px;
  font-weight: 700;
  color: var(--primary);
  display: block;
  line-height: 1;
}
.trust-stat .number .suffix { font-size: 24px; }
.trust-stat .label {
  color: var(--text-light);
  font-size: 16px;
  margin-top: 8px;
}

/* --- Logo 墙 --- */
.logo-wall {
  margin-top: 40px;
  text-align: center;
}
.logo-wall .label {
  color: var(--text-light);
  font-size: 14px;
  margin-bottom: 24px;
}
.logo-grid {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 40px;
  flex-wrap: wrap;
  opacity: 0.6;
}

/* --- 场景卡片 (2列) --- */
.scenarios-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
}
.scenario-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 40px;
  transition: var(--transition);
}
.scenario-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-4px);
}
.scenario-card .scenario-icon {
  font-size: 40px;
  margin-bottom: 16px;
  display: block;
}
.scenario-card h3 {
  font-size: 22px;
  font-weight: 600;
  color: var(--dark);
  margin-bottom: 12px;
}
.scenario-card p {
  color: var(--text-light);
  font-size: 15px;
  line-height: 1.7;
  margin-bottom: 20px;
}

/* --- CTA 区域 --- */
.cta-section {
  background: var(--primary-gradient);
  padding: 80px 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cta-section::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 400px;
  height: 400px;
  border-radius: 50%;
  background: rgba(255,255,255,0.05);
}
.cta-section h2 {
  font-size: 36px;
  font-weight: 700;
  color: white;
  margin-bottom: 16px;
  position: relative;
}
.cta-section p {
  color: rgba(255,255,255,0.85);
  font-size: 18px;
  margin-bottom: 36px;
  position: relative;
}
.cta-section .btn-primary {
  background: white;
  color: var(--primary);
  box-shadow: 0 4px 14px rgba(0,0,0,0.15);
}
.cta-section .btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0,0,0,0.2);
}

/* --- 页脚 --- */
.footer {
  background: var(--dark);
  color: rgba(255,255,255,0.7);
  padding: 60px 0 30px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}
.footer-brand .logo {
  display: flex;
  align-items: center;
  gap: 10px;
  color: white;
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 16px;
}
.footer-brand .logo .logo-icon {
  width: 32px;
  height: 32px;
  background: var(--primary-gradient);
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 16px;
  font-weight: 800;
}
.footer-brand p {
  font-size: 14px;
  line-height: 1.7;
  max-width: 300px;
}
.footer-col h4 {
  color: white;
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 20px;
}
.footer-col ul li {
  margin-bottom: 12px;
}
.footer-col ul li a {
  font-size: 14px;
  transition: var(--transition);
}
.footer-col ul li a:hover { color: var(--primary); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 13px;
}

/* ========== 产品页 ========== */
.product-hero {
  padding: 140px 0 80px;
  background: var(--primary-gradient);
  text-align: center;
  color: white;
}
.product-hero h1 { font-size: 42px; font-weight: 700; margin-bottom: 16px; }
.product-hero p { font-size: 18px; color: rgba(255,255,255,0.85); max-width: 600px; margin: 0 auto; }

/* 架构图 */
.architecture-section {
  padding: 80px 0;
  background: var(--bg-light);
}
.architecture-diagram {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 24px;
  max-width: 700px;
  margin: 0 auto;
}
.arch-layer {
  display: flex;
  gap: 16px;
  align-items: center;
  flex-wrap: wrap;
  justify-content: center;
}
.arch-node {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 16px 24px;
  text-align: center;
  min-width: 120px;
  transition: var(--transition);
}
.arch-node:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow-hover);
}
.arch-node .node-icon { font-size: 28px; display: block; margin-bottom: 6px; }
.arch-node .node-name { font-size: 13px; font-weight: 600; color: var(--dark); }
.arch-node .node-desc { font-size: 11px; color: var(--text-light); margin-top: 2px; }
.arch-node.primary { border-color: var(--primary); background: var(--primary-light); }
.arch-arrow { color: var(--text-light); font-size: 20px; }
.arch-or { color: var(--text-light); font-size: 13px; font-weight: 500; }

/* 功能详解 */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.feature-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  transition: var(--transition);
}
.feature-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-2px);
}
.feature-card .feature-icon { font-size: 32px; margin-bottom: 12px; display: block; }
.feature-card h3 { font-size: 17px; font-weight: 600; color: var(--dark); margin-bottom: 8px; }
.feature-card p { color: var(--text-light); font-size: 14px; line-height: 1.6; }

/* 接入方式 */
.integration-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.integration-card {
  display: flex;
  gap: 20px;
  align-items: flex-start;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  transition: var(--transition);
}
.integration-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-2px);
}
.integration-card .int-icon { font-size: 36px; flex-shrink: 0; }
.integration-card h3 { font-size: 17px; font-weight: 600; color: var(--dark); margin-bottom: 6px; }
.integration-card p { color: var(--text-light); font-size: 14px; line-height: 1.6; }

/* ========== 定价页 ========== */
.pricing-hero {
  padding: 140px 0 60px;
  text-align: center;
  background: var(--bg-light);
}
.pricing-hero h1 { font-size: 42px; font-weight: 700; color: var(--dark); margin-bottom: 16px; }
.pricing-hero p { font-size: 18px; color: var(--text-light); max-width: 600px; margin: 0 auto; }

.pricing-toggle {
  display: inline-flex;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 30px;
  padding: 4px;
  margin-bottom: 40px;
}
.pricing-toggle button {
  padding: 8px 24px;
  border: none;
  background: transparent;
  cursor: pointer;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-light);
  border-radius: 24px;
  transition: var(--transition);
  font-family: var(--font);
}
.pricing-toggle button.active {
  background: var(--primary);
  color: white;
}
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  align-items: start;
}
.pricing-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 40px 32px;
  transition: var(--transition);
  position: relative;
}
.pricing-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}
.pricing-card.featured {
  border-color: var(--primary);
  box-shadow: 0 4px 20px rgba(108, 99, 255, 0.15);
  transform: scale(1.02);
}
.pricing-card.featured:hover {
  transform: scale(1.02) translateY(-4px);
}
.pricing-card .badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--primary);
  color: white;
  padding: 4px 20px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 600;
}
.pricing-card .plan-name {
  font-size: 18px;
  font-weight: 600;
  color: var(--dark);
  margin-bottom: 8px;
}
.pricing-card .plan-price {
  font-size: 44px;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 4px;
}
.pricing-card .plan-price .currency {
  font-size: 20px;
  font-weight: 500;
}
.pricing-card .plan-price .period {
  font-size: 16px;
  font-weight: 400;
  color: var(--text-light);
}
.pricing-card .plan-desc {
  color: var(--text-light);
  font-size: 14px;
  margin-bottom: 24px;
}
.pricing-card .plan-features {
  margin-bottom: 28px;
}
.pricing-card .plan-features li {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 0;
  font-size: 14px;
  color: var(--text);
  border-bottom: 1px solid var(--bg-light);
}
.pricing-card .plan-features li:last-child { border-bottom: none; }
.pricing-card .plan-features .check { color: var(--success); font-weight: 700; }
.pricing-card .plan-features .dash { color: var(--text-light); }
.pricing-card .btn { width: 100%; justify-content: center; }

/* ========== 案例页 ========== */
.cases-hero {
  padding: 140px 0 60px;
  text-align: center;
  background: var(--bg-light);
}
.cases-hero h1 { font-size: 42px; font-weight: 700; color: var(--dark); margin-bottom: 16px; }
.cases-hero p { font-size: 18px; color: var(--text-light); max-width: 600px; margin: 0 auto; }

.case-filters {
  display: flex;
  gap: 12px;
  justify-content: center;
  margin-bottom: 40px;
  flex-wrap: wrap;
}
.case-filters button {
  padding: 8px 20px;
  border: 1px solid var(--border);
  background: var(--bg);
  border-radius: 20px;
  cursor: pointer;
  font-size: 14px;
  color: var(--text);
  transition: var(--transition);
  font-family: var(--font);
}
.case-filters button:hover, .case-filters button.active {
  border-color: var(--primary);
  background: var(--primary-light);
  color: var(--primary);
}
.cases-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.case-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  transition: var(--transition);
}
.case-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-4px);
}
.case-card .case-tag {
  display: inline-block;
  padding: 4px 12px;
  background: var(--primary-light);
  color: var(--primary);
  border-radius: 4px;
  font-size: 12px;
  font-weight: 600;
  margin-bottom: 12px;
}
.case-card .case-company {
  font-size: 18px;
  font-weight: 600;
  color: var(--dark);
  margin-bottom: 8px;
}
.case-card .case-result {
  font-size: 28px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 8px;
}
.case-card .case-desc {
  color: var(--text-light);
  font-size: 14px;
  line-height: 1.6;
}

/* ========== 关于页 ========== */
.about-hero {
  padding: 140px 0 80px;
  text-align: center;
  background: var(--primary-gradient);
  color: white;
}
.about-hero h1 { font-size: 42px; font-weight: 700; margin-bottom: 16px; }
.about-hero p { font-size: 18px; color: rgba(255,255,255,0.85); max-width: 600px; margin: 0 auto; }

.story-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: start;
}
.story-text h2 { font-size: 28px; font-weight: 700; color: var(--dark); margin-bottom: 20px; }
.story-text p { color: var(--text); font-size: 16px; line-height: 1.8; margin-bottom: 16px; }
.story-timeline { position: relative; padding-left: 24px; }
.story-timeline::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--primary-light);
}
.timeline-item {
  position: relative;
  padding: 0 0 28px 24px;
}
.timeline-item::before {
  content: '';
  position: absolute;
  left: -6px;
  top: 4px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--primary);
  border: 3px solid var(--primary-light);
}
.timeline-item .time { font-size: 13px; color: var(--primary); font-weight: 600; margin-bottom: 4px; }
.timeline-item h4 { font-size: 16px; font-weight: 600; color: var(--dark); margin-bottom: 4px; }
.timeline-item p { font-size: 14px; color: var(--text-light); }

.contact-form {
  max-width: 600px;
  margin: 0 auto;
}
.contact-form .form-group {
  margin-bottom: 20px;
}
.contact-form label {
  display: block;
  font-size: 14px;
  font-weight: 500;
  color: var(--dark);
  margin-bottom: 6px;
}
.contact-form input, .contact-form textarea, .contact-form select {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-family: var(--font);
  transition: var(--transition);
  background: var(--bg);
}
.contact-form input:focus, .contact-form textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(108, 99, 255, 0.1);
}
.contact-form textarea { min-height: 120px; resize: vertical; }

/* ========== 响应式 ========== */
@media (max-width: 1024px) {
  .hero .container { grid-template-columns: 1fr; gap: 40px; }
  .hero-content { text-align: center; }
  .hero-content p { margin: 0 auto 36px; }
  .hero-actions { justify-content: center; }
  .hero-stats { justify-content: center; }
  .hero { padding: 120px 0 80px; }
  .hero-content h1 { font-size: 38px; }
  .values-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .pricing-grid { grid-template-columns: 1fr; max-width: 400px; margin: 0 auto; }
  .pricing-card.featured { transform: none; }
  .pricing-card.featured:hover { transform: translateY(-4px); }
  .cases-grid { grid-template-columns: repeat(2, 1fr); }
  .story-content { grid-template-columns: 1fr; gap: 40px; }
  .features-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .navbar .nav-links {
    display: none;
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background: rgba(255,255,255,0.98);
    backdrop-filter: blur(12px);
    flex-direction: column;
    padding: 20px 24px;
    border-bottom: 1px solid var(--border);
    gap: 16px;
  }
  .navbar .nav-links.open { display: flex; }
  .navbar .nav-right { display: none; }
  .navbar .nav-right.mobile-visible { display: flex; flex-direction: column; gap: 8px; padding-top: 8px; }
  .hamburger { display: flex; }
  .hero-content h1 { font-size: 32px; }
  .hero-stats { flex-direction: column; gap: 20px; }
  .values-grid { grid-template-columns: 1fr; }
  .scenarios-grid { grid-template-columns: 1fr; }
  .section { padding: 60px 0; }
  .section-header h2 { font-size: 28px; }
  .trust-stats { grid-template-columns: 1fr; gap: 24px; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; gap: 12px; text-align: center; }
  .cases-grid { grid-template-columns: 1fr; }
  .features-grid { grid-template-columns: 1fr; }
  .integration-grid { grid-template-columns: 1fr; }
  .pricing-hero h1 { font-size: 32px; }
  .product-hero h1 { font-size: 32px; }
  .about-hero h1 { font-size: 32px; }
  .cases-hero h1 { font-size: 32px; }
  .logo-grid { gap: 20px; }
  .logo-grid .logo-item { font-size: 14px; }
  .hero-visual .agent-row { flex-direction: column; gap: 8px; }
  .hero-visual .agent-arrow { transform: rotate(90deg); }
  .arch-layer { flex-direction: column; }
  .arch-arrow { transform: rotate(90deg); }
}

/* --- 入场动画 --- */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* --- 页面标题区（通用） --- */
.page-hero {
  padding: 140px 0 80px;
  text-align: center;
  color: white;
  background: var(--primary-gradient);
  position: relative;
  overflow: hidden;
}
.page-hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 500px;
  height: 500px;
  border-radius: 50%;
  background: rgba(255,255,255,0.05);
}
.page-hero h1 { font-size: 42px; font-weight: 700; margin-bottom: 16px; position: relative; }
.page-hero p { font-size: 18px; color: rgba(255,255,255,0.85); max-width: 600px; margin: 0 auto; position: relative; }

/* --- 面包屑覆盖 --- */
.breadcrumb {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-bottom: 20px;
  font-size: 14px;
  color: rgba(255,255,255,0.7);
  position: relative;
}
.breadcrumb a { color: rgba(255,255,255,0.7); transition: var(--transition); }
.breadcrumb a:hover { color: white; }
.breadcrumb .sep { color: rgba(255,255,255,0.4); }
.breadcrumb .current { color: white; }