@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+SC:wght@300;400;500;700;900&display=swap');

:root {
  --primary: #2d7a3a;
  --primary-light: #4caf50;
  --primary-dark: #1b5e20;
  --accent: #ff8f00;
  --accent-light: #ffb300;
  --bg-dark: #0a1f0d;
  --bg-section: #f5faf6;
  --bg-card: #ffffff;
  --text-primary: #1a1a2e;
  --text-secondary: #555;
  --text-light: #888;
  --text-white: #fff;
  --border: #e0e8e2;
  --shadow: 0 4px 20px rgba(0,0,0,0.08);
  --shadow-hover: 0 8px 40px rgba(45,122,58,0.15);
  --radius: 12px;
  --radius-lg: 20px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --font-main: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

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

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

body {
  font-family: var(--font-main);
  color: var(--text-primary);
  background: var(--bg-card);
  line-height: 1.6;
  overflow-x: hidden;
}

a {
  text-decoration: none;
  color: inherit;
  transition: var(--transition);
}

ul, ol {
  list-style: none;
}

img {
  max-width: 100%;
  display: block;
}

.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== 导航栏 ===== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  padding: 16px 0;
  transition: var(--transition);
  background: transparent;
}

.navbar.scrolled {
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(20px);
  box-shadow: 0 2px 20px rgba(0,0,0,0.08);
  padding: 10px 0;
}

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

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--text-white);
  transition: var(--transition);
}

.navbar.scrolled .nav-logo {
  color: var(--primary);
}

.nav-logo svg {
  width: 40px;
  height: 40px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-links a {
  color: rgba(255,255,255,0.9);
  font-weight: 500;
  font-size: 0.95rem;
  position: relative;
  padding: 4px 0;
}

.navbar.scrolled .nav-links a {
  color: var(--text-primary);
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent);
  transition: var(--transition);
  border-radius: 2px;
}

.nav-links a:hover::after,
.nav-links a.active::after {
  width: 100%;
}

.nav-links a:hover {
  color: var(--accent);
}

.navbar.scrolled .nav-links a:hover {
  color: var(--primary);
}

.nav-cta {
  background: var(--accent) !important;
  color: var(--text-white) !important;
  padding: 8px 24px !important;
  border-radius: 50px !important;
  font-weight: 600 !important;
}

.nav-cta::after {
  display: none !important;
}

.nav-cta:hover {
  background: var(--accent-light) !important;
  transform: translateY(-2px);
  box-shadow: 0 4px 15px rgba(255,143,0,0.4);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 5px;
  z-index: 1001;
}

.nav-toggle span {
  width: 28px;
  height: 3px;
  background: var(--text-white);
  border-radius: 3px;
  transition: var(--transition);
}

.navbar.scrolled .nav-toggle span {
  background: var(--text-primary);
}

/* ===== 英雄区 ===== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, var(--bg-dark) 0%, #0d3311 50%, #1a4a24 100%);
}

.hero-bg-pattern {
  position: absolute;
  inset: 0;
  opacity: 0.06;
  background-image:
    radial-gradient(circle at 20% 50%, var(--primary-light) 1px, transparent 1px),
    radial-gradient(circle at 80% 20%, var(--accent) 1px, transparent 1px),
    radial-gradient(circle at 50% 80%, var(--primary) 1px, transparent 1px);
  background-size: 60px 60px, 80px 80px, 100px 100px;
  animation: patternFloat 20s ease-in-out infinite;
}

@keyframes patternFloat {
  0%, 100% { transform: translate(0, 0); }
  50% { transform: translate(-20px, -10px); }
}

.hero-particles {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.hero-particle {
  position: absolute;
  border-radius: 50%;
  background: rgba(76, 175, 80, 0.3);
  animation: particleFloat 8s ease-in-out infinite;
}

@keyframes particleFloat {
  0%, 100% { transform: translateY(0) scale(1); opacity: 0.3; }
  50% { transform: translateY(-30px) scale(1.2); opacity: 0.6; }
}

.hero .container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  position: relative;
  z-index: 2;
}

.hero-content {
  color: var(--text-white);
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(76, 175, 80, 0.15);
  border: 1px solid rgba(76, 175, 80, 0.3);
  padding: 6px 16px;
  border-radius: 50px;
  font-size: 0.85rem;
  color: var(--primary-light);
  margin-bottom: 24px;
  animation: fadeInUp 0.8s ease;
}

.hero-badge .pulse-dot {
  width: 8px;
  height: 8px;
  background: var(--primary-light);
  border-radius: 50%;
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(1.5); }
}

.hero h1 {
  font-size: 3.5rem;
  font-weight: 900;
  line-height: 1.2;
  margin-bottom: 20px;
  animation: fadeInUp 0.8s ease 0.2s both;
}

.hero h1 .highlight {
  background: linear-gradient(135deg, var(--primary-light), var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-desc {
  font-size: 1.15rem;
  color: rgba(255,255,255,0.7);
  line-height: 1.8;
  margin-bottom: 36px;
  max-width: 520px;
  animation: fadeInUp 0.8s ease 0.4s both;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  animation: fadeInUp 0.8s ease 0.6s both;
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: 50px;
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  border: none;
  transition: var(--transition);
  font-family: var(--font-main);
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: var(--text-white);
  box-shadow: 0 4px 20px rgba(45,122,58,0.4);
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 30px rgba(45,122,58,0.5);
}

.btn-outline {
  background: transparent;
  color: var(--text-white);
  border: 2px solid rgba(255,255,255,0.3);
}

.btn-outline:hover {
  background: rgba(255,255,255,0.1);
  border-color: rgba(255,255,255,0.6);
  transform: translateY(-3px);
}

.btn-accent {
  background: linear-gradient(135deg, var(--accent), var(--accent-light));
  color: var(--text-white);
  box-shadow: 0 4px 20px rgba(255,143,0,0.4);
}

.btn-accent:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 30px rgba(255,143,0,0.5);
}

.btn-sm {
  padding: 10px 24px;
  font-size: 0.9rem;
}

.btn-lg {
  padding: 16px 40px;
  font-size: 1.1rem;
}

.hero-visual {
  position: relative;
  animation: fadeInUp 1s ease 0.8s both;
}

.hero-illustration {
  width: 100%;
  max-width: 560px;
  margin: 0 auto;
  position: relative;
}

.hero-illustration svg {
  width: 100%;
  height: auto;
  filter: drop-shadow(0 20px 40px rgba(0,0,0,0.3));
}

.hero-float-card {
  position: absolute;
  background: rgba(255,255,255,0.1);
  backdrop-filter: blur(20px);
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: var(--radius);
  padding: 16px 20px;
  color: var(--text-white);
  animation: floatCard 4s ease-in-out infinite;
}

.hero-float-card.card-1 {
  top: 10%;
  right: -20px;
  animation-delay: 0s;
}

.hero-float-card.card-2 {
  bottom: 20%;
  left: -30px;
  animation-delay: 2s;
}

.hero-float-card.card-3 {
  bottom: 5%;
  right: 10%;
  animation-delay: 1s;
}

@keyframes floatCard {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

.hero-float-card .card-icon {
  font-size: 1.5rem;
  margin-bottom: 4px;
}

.hero-float-card .card-value {
  font-size: 1.3rem;
  font-weight: 700;
}

.hero-float-card .card-label {
  font-size: 0.75rem;
  opacity: 0.7;
}

/* ===== 通用区块 ===== */
.section {
  padding: 100px 0;
}

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

.section-dark {
  background: var(--bg-dark);
  color: var(--text-white);
}

.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 60px;
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(45,122,58,0.08);
  color: var(--primary);
  padding: 6px 16px;
  border-radius: 50px;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 16px;
}

.section-dark .section-tag {
  background: rgba(76,175,80,0.15);
  color: var(--primary-light);
}

.section-title {
  font-size: 2.5rem;
  font-weight: 800;
  margin-bottom: 16px;
  line-height: 1.3;
}

.section-dark .section-title {
  color: var(--text-white);
}

.section-desc {
  font-size: 1.05rem;
  color: var(--text-secondary);
  line-height: 1.8;
}

.section-dark .section-desc {
  color: rgba(255,255,255,0.6);
}

/* ===== 数据统计 ===== */
.stats {
  padding: 80px 0;
  background: linear-gradient(135deg, var(--primary-dark), var(--primary));
  position: relative;
  overflow: hidden;
}

.stats::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 40px;
  position: relative;
  z-index: 1;
}

.stat-item {
  text-align: center;
  color: var(--text-white);
}

.stat-number {
  font-size: 3rem;
  font-weight: 900;
  margin-bottom: 8px;
  line-height: 1;
}

.stat-number .counter {
  display: inline;
}

.stat-label {
  font-size: 0.95rem;
  opacity: 0.8;
}

/* ===== 特色产品 ===== */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.feature-card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  padding: 40px 32px;
  box-shadow: var(--shadow);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
  border: 1px solid transparent;
}

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

.feature-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-hover);
  border-color: rgba(45,122,58,0.1);
}

.feature-card:hover::before {
  transform: scaleX(1);
}

.feature-icon {
  width: 64px;
  height: 64px;
  border-radius: 16px;
  background: linear-gradient(135deg, rgba(45,122,58,0.1), rgba(76,175,80,0.1));
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
  transition: var(--transition);
}

.feature-card:hover .feature-icon {
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  transform: scale(1.1);
}

.feature-icon svg {
  width: 32px;
  height: 32px;
  color: var(--primary);
  transition: var(--transition);
}

.feature-card:hover .feature-icon svg {
  color: var(--text-white);
}

.feature-card h3 {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.feature-card p {
  color: var(--text-secondary);
  line-height: 1.7;
  font-size: 0.95rem;
}

/* ===== 产品展示 ===== */
.product-filters {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-bottom: 48px;
  flex-wrap: wrap;
}

.filter-btn {
  padding: 10px 24px;
  border-radius: 50px;
  border: 2px solid var(--border);
  background: var(--bg-card);
  color: var(--text-secondary);
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
  font-family: var(--font-main);
  font-size: 0.9rem;
}

.filter-btn:hover,
.filter-btn.active {
  background: var(--primary);
  color: var(--text-white);
  border-color: var(--primary);
}

.products-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.product-card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: var(--transition);
  cursor: pointer;
  border: 1px solid var(--border);
}

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

.product-img {
  height: 220px;
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, #e8f5e9, #f1f8e9);
  display: flex;
  align-items: center;
  justify-content: center;
}

.product-img svg {
  width: 120px;
  height: 120px;
  transition: var(--transition);
}

.product-card:hover .product-img svg {
  transform: scale(1.1) rotate(5deg);
}

.product-badge {
  position: absolute;
  top: 12px;
  left: 12px;
  background: var(--accent);
  color: var(--text-white);
  padding: 4px 12px;
  border-radius: 50px;
  font-size: 0.75rem;
  font-weight: 600;
}

.product-info {
  padding: 20px;
}

.product-info h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.product-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 12px;
  font-size: 0.8rem;
  color: var(--text-light);
}

.product-meta span {
  display: flex;
  align-items: center;
  gap: 4px;
}

.product-price {
  display: flex;
  align-items: baseline;
  gap: 8px;
}

.product-price .current {
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--accent);
}

.product-price .original {
  font-size: 0.9rem;
  color: var(--text-light);
  text-decoration: line-through;
}

.product-actions {
  display: flex;
  gap: 8px;
  margin-top: 16px;
}

.product-actions .btn {
  flex: 1;
  justify-content: center;
  padding: 10px 16px;
  font-size: 0.85rem;
}

/* ===== 溯源系统 ===== */
.trace-hero {
  padding: 140px 0 80px;
  background: linear-gradient(135deg, var(--bg-dark), #0d3311);
  text-align: center;
  color: var(--text-white);
}

.trace-search {
  max-width: 600px;
  margin: 40px auto 0;
  position: relative;
}

.trace-search input {
  width: 100%;
  padding: 18px 60px 18px 24px;
  border-radius: 50px;
  border: 2px solid rgba(76,175,80,0.3);
  background: rgba(255,255,255,0.08);
  color: var(--text-white);
  font-size: 1rem;
  font-family: var(--font-main);
  outline: none;
  transition: var(--transition);
}

.trace-search input::placeholder {
  color: rgba(255,255,255,0.4);
}

.trace-search input:focus {
  border-color: var(--primary-light);
  background: rgba(255,255,255,0.12);
}

.trace-search button {
  position: absolute;
  right: 6px;
  top: 50%;
  transform: translateY(-50%);
  width: 48px;
  height: 48px;
  border-radius: 50%;
  border: none;
  background: var(--primary);
  color: var(--text-white);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}

.trace-search button:hover {
  background: var(--primary-light);
}

.timeline {
  position: relative;
  max-width: 900px;
  margin: 0 auto;
  padding: 40px 0;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 50%;
  top: 0;
  bottom: 0;
  width: 3px;
  background: linear-gradient(to bottom, var(--primary), var(--accent));
  transform: translateX(-50%);
  border-radius: 3px;
}

.timeline-item {
  display: flex;
  align-items: flex-start;
  margin-bottom: 60px;
  position: relative;
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.6s ease;
}

.timeline-item.visible {
  opacity: 1;
  transform: translateY(0);
}

.timeline-item:nth-child(odd) {
  flex-direction: row;
  padding-right: calc(50% + 40px);
  text-align: right;
}

.timeline-item:nth-child(even) {
  flex-direction: row-reverse;
  padding-left: calc(50% + 40px);
  text-align: left;
}

.timeline-dot {
  position: absolute;
  left: 50%;
  top: 0;
  width: 20px;
  height: 20px;
  background: var(--primary);
  border: 4px solid var(--bg-card);
  border-radius: 50%;
  transform: translateX(-50%);
  z-index: 2;
  box-shadow: 0 0 0 4px rgba(45,122,58,0.2);
}

.timeline-content {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
}

.timeline-content h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--primary);
}

.timeline-content p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.timeline-content .trace-data {
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid var(--border);
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.timeline-content .trace-data span {
  font-size: 0.8rem;
  color: var(--text-light);
  display: flex;
  align-items: center;
  gap: 4px;
}

/* ===== 电商区 ===== */
.shop-banner {
  background: linear-gradient(135deg, var(--accent), #ff6f00);
  padding: 60px 0;
  color: var(--text-white);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.shop-banner::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='40' height='40' viewBox='0 0 40 40' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='%23ffffff' fill-opacity='0.08'%3E%3Cpath d='M20 20c0-5.5-4.5-10-10-10S0 14.5 0 20s4.5 10 10 10 10-4.5 10-10zm20 0c0-5.5-4.5-10-10-10S20 14.5 20 20s4.5 10 10 10 10-4.5 10-10z'/%3E%3C/g%3E%3C/svg%3E");
}

.shop-banner h2 {
  font-size: 2.2rem;
  font-weight: 800;
  margin-bottom: 12px;
  position: relative;
}

.shop-banner p {
  font-size: 1.1rem;
  opacity: 0.9;
  position: relative;
}

.shop-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.shop-card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: var(--transition);
  border: 1px solid var(--border);
}

.shop-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-hover);
}

.shop-card-img {
  height: 240px;
  background: linear-gradient(135deg, #e8f5e9, #c8e6c9);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.shop-card-img svg {
  width: 100px;
  height: 100px;
  transition: var(--transition);
}

.shop-card:hover .shop-card-img svg {
  transform: scale(1.15);
}

.shop-card-body {
  padding: 24px;
}

.shop-card-body h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.shop-card-body .desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 16px;
  line-height: 1.6;
}

.shop-card-body .price-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.shop-card-body .price {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--accent);
}

.shop-card-body .price small {
  font-size: 0.8rem;
  color: var(--text-light);
  font-weight: 400;
}

/* ===== AI 区块 ===== */
.ai-section {
  position: relative;
  overflow: hidden;
}

.ai-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.ai-chat-demo {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  overflow: hidden;
  border: 1px solid var(--border);
}

.ai-chat-header {
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  padding: 16px 24px;
  color: var(--text-white);
  display: flex;
  align-items: center;
  gap: 12px;
}

.ai-chat-header .avatar {
  width: 40px;
  height: 40px;
  background: rgba(255,255,255,0.2);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.ai-chat-body {
  padding: 24px;
  height: 360px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.chat-msg {
  display: flex;
  gap: 10px;
  max-width: 85%;
  animation: fadeInUp 0.4s ease;
}

.chat-msg.bot {
  align-self: flex-start;
}

.chat-msg.user {
  align-self: flex-end;
  flex-direction: row-reverse;
}

.chat-msg .msg-avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
}

.chat-msg.bot .msg-avatar {
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: var(--text-white);
}

.chat-msg.user .msg-avatar {
  background: var(--accent);
  color: var(--text-white);
}

.chat-msg .msg-bubble {
  padding: 12px 16px;
  border-radius: 16px;
  font-size: 0.9rem;
  line-height: 1.6;
}

.chat-msg.bot .msg-bubble {
  background: var(--bg-section);
  border-bottom-left-radius: 4px;
}

.chat-msg.user .msg-bubble {
  background: var(--primary);
  color: var(--text-white);
  border-bottom-right-radius: 4px;
}

.ai-chat-input {
  display: flex;
  gap: 8px;
  padding: 16px 24px;
  border-top: 1px solid var(--border);
}

.ai-chat-input input {
  flex: 1;
  padding: 12px 16px;
  border-radius: 50px;
  border: 2px solid var(--border);
  font-size: 0.9rem;
  font-family: var(--font-main);
  outline: none;
  transition: var(--transition);
}

.ai-chat-input input:focus {
  border-color: var(--primary);
}

.ai-chat-input button {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: none;
  background: var(--primary);
  color: var(--text-white);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}

.ai-chat-input button:hover {
  background: var(--primary-light);
}

.ai-features {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.ai-feature-item {
  display: flex;
  gap: 20px;
  padding: 24px;
  background: var(--bg-card);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  transition: var(--transition);
  border: 1px solid var(--border);
}

.ai-feature-item:hover {
  transform: translateX(8px);
  box-shadow: var(--shadow-hover);
  border-color: var(--primary);
}

.ai-feature-item .icon {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  background: linear-gradient(135deg, rgba(45,122,58,0.1), rgba(76,175,80,0.1));
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.ai-feature-item .icon svg {
  width: 28px;
  height: 28px;
  color: var(--primary);
}

.ai-feature-item h4 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 6px;
}

.ai-feature-item p {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ===== 认证区 ===== */
.cert-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.cert-card {
  text-align: center;
  padding: 32px 20px;
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius);
  transition: var(--transition);
}

.cert-card:hover {
  background: rgba(255,255,255,0.1);
  transform: translateY(-4px);
}

.cert-card svg {
  width: 56px;
  height: 56px;
  margin: 0 auto 16px;
  color: var(--primary-light);
}

.cert-card h4 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--text-white);
}

.cert-card p {
  font-size: 0.8rem;
  color: rgba(255,255,255,0.5);
}

/* ===== 关于我们 ===== */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.about-img {
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: linear-gradient(135deg, #e8f5e9, #c8e6c9);
  height: 400px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.about-img svg {
  width: 200px;
  height: 200px;
}

.about-content h2 {
  font-size: 2.2rem;
  font-weight: 800;
  margin-bottom: 20px;
}

.about-content p {
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 16px;
}

.about-list {
  margin: 24px 0;
}

.about-list li {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 0;
  font-size: 0.95rem;
}

.about-list li svg {
  width: 20px;
  height: 20px;
  color: var(--primary);
  flex-shrink: 0;
}

.team-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-top: 60px;
}

.team-card {
  text-align: center;
  padding: 32px 20px;
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  transition: var(--transition);
  border: 1px solid var(--border);
}

.team-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-hover);
}

.team-avatar {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  margin: 0 auto 16px;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-white);
  font-size: 1.8rem;
  font-weight: 700;
}

.team-card h4 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 4px;
}

.team-card .role {
  font-size: 0.85rem;
  color: var(--primary);
  margin-bottom: 8px;
}

.team-card p {
  font-size: 0.8rem;
  color: var(--text-light);
  line-height: 1.5;
}

/* ===== 联系我们 ===== */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
}

.contact-form {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  padding: 40px;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-weight: 600;
  margin-bottom: 8px;
  font-size: 0.9rem;
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 14px 16px;
  border: 2px solid var(--border);
  border-radius: var(--radius);
  font-size: 0.95rem;
  font-family: var(--font-main);
  outline: none;
  transition: var(--transition);
  background: var(--bg-card);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 4px rgba(45,122,58,0.1);
}

.form-group textarea {
  height: 120px;
  resize: vertical;
}

.contact-info-cards {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.contact-info-card {
  display: flex;
  gap: 16px;
  padding: 24px;
  background: var(--bg-card);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
  transition: var(--transition);
}

.contact-info-card:hover {
  transform: translateX(8px);
  border-color: var(--primary);
}

.contact-info-card .icon {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  background: linear-gradient(135deg, rgba(45,122,58,0.1), rgba(76,175,80,0.1));
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.contact-info-card .icon svg {
  width: 24px;
  height: 24px;
  color: var(--primary);
}

.contact-info-card h4 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 4px;
}

.contact-info-card p {
  font-size: 0.88rem;
  color: var(--text-secondary);
}

.faq-list {
  margin-top: 60px;
}

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

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

.faq-question {
  padding: 20px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  font-weight: 600;
  font-size: 1rem;
  background: var(--bg-card);
  transition: var(--transition);
}

.faq-question:hover {
  background: var(--bg-section);
}

.faq-question svg {
  width: 20px;
  height: 20px;
  color: var(--primary);
  transition: var(--transition);
  flex-shrink: 0;
}

.faq-item.open .faq-question svg {
  transform: rotate(180deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease;
}

.faq-answer-inner {
  padding: 0 24px 20px;
  color: var(--text-secondary);
  line-height: 1.8;
  font-size: 0.92rem;
}

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

/* ===== 页脚 ===== */
.footer {
  background: var(--bg-dark);
  color: rgba(255,255,255,0.7);
  padding: 80px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

.footer-brand p {
  margin-top: 16px;
  font-size: 0.9rem;
  line-height: 1.7;
  max-width: 320px;
}

.footer-brand .footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--text-white);
}

.footer-brand .footer-logo svg {
  width: 36px;
  height: 36px;
}

.footer-col h4 {
  color: var(--text-white);
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 20px;
}

.footer-col a {
  display: block;
  padding: 6px 0;
  font-size: 0.9rem;
  color: rgba(255,255,255,0.5);
  transition: var(--transition);
}

.footer-col a:hover {
  color: var(--primary-light);
  transform: translateX(4px);
}

.footer-bottom {
  padding: 24px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.85rem;
}

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

.footer-social a {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(255,255,255,0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}

.footer-social a:hover {
  background: var(--primary);
  transform: translateY(-3px);
}

.footer-social a svg {
  width: 18px;
  height: 18px;
  color: rgba(255,255,255,0.7);
}

/* ===== AI 浮动助手 ===== */
.ai-assistant {
  position: fixed;
  bottom: 30px;
  right: 30px;
  z-index: 999;
}

.ai-assistant-btn {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  border: none;
  color: var(--text-white);
  cursor: pointer;
  box-shadow: 0 4px 20px rgba(45,122,58,0.4);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
  position: relative;
}

.ai-assistant-btn:hover {
  transform: scale(1.1);
  box-shadow: 0 6px 30px rgba(45,122,58,0.5);
}

.ai-assistant-btn svg {
  width: 28px;
  height: 28px;
}

.ai-assistant-btn .ripple {
  position: absolute;
  inset: -4px;
  border-radius: 50%;
  border: 2px solid var(--primary-light);
  animation: ripple 2s ease-out infinite;
}

@keyframes ripple {
  0% { transform: scale(1); opacity: 0.6; }
  100% { transform: scale(1.5); opacity: 0; }
}

.ai-assistant-panel {
  position: absolute;
  bottom: 70px;
  right: 0;
  width: 380px;
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  box-shadow: 0 10px 50px rgba(0,0,0,0.2);
  overflow: hidden;
  transform: scale(0.8) translateY(20px);
  opacity: 0;
  pointer-events: none;
  transition: var(--transition);
  transform-origin: bottom right;
}

.ai-assistant-panel.open {
  transform: scale(1) translateY(0);
  opacity: 1;
  pointer-events: all;
}

/* ===== 回到顶部 ===== */
.back-to-top {
  position: fixed;
  bottom: 30px;
  left: 30px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--primary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow);
  transition: var(--transition);
  opacity: 0;
  pointer-events: none;
  z-index: 998;
}

.back-to-top.visible {
  opacity: 1;
  pointer-events: all;
}

.back-to-top:hover {
  background: var(--primary);
  color: var(--text-white);
  transform: translateY(-3px);
}

/* ===== 加载动画 ===== */
.page-loader {
  position: fixed;
  inset: 0;
  background: var(--bg-dark);
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity 0.5s ease;
}

.page-loader.hidden {
  opacity: 0;
  pointer-events: none;
}

.loader-content {
  text-align: center;
  color: var(--text-white);
}

.loader-spinner {
  width: 48px;
  height: 48px;
  border: 3px solid rgba(76,175,80,0.2);
  border-top-color: var(--primary-light);
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin: 0 auto 16px;
}

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

.loader-text {
  font-size: 0.9rem;
  opacity: 0.7;
}

/* ===== 滚动动画 ===== */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-left {
  opacity: 0;
  transform: translateX(-40px);
  transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.reveal-left.visible {
  opacity: 1;
  transform: translateX(0);
}

.reveal-right {
  opacity: 0;
  transform: translateX(40px);
  transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.reveal-right.visible {
  opacity: 1;
  transform: translateX(0);
}

/* ===== 购物车侧边栏 ===== */
.cart-sidebar {
  position: fixed;
  top: 0;
  right: -420px;
  width: 420px;
  height: 100vh;
  background: var(--bg-card);
  z-index: 1002;
  box-shadow: -10px 0 40px rgba(0,0,0,0.15);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

.cart-sidebar.open {
  right: 0;
}

.cart-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  z-index: 1001;
  opacity: 0;
  pointer-events: none;
  transition: var(--transition);
}

.cart-overlay.open {
  opacity: 1;
  pointer-events: all;
}

.cart-header {
  padding: 24px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.cart-header h3 {
  font-size: 1.2rem;
  font-weight: 700;
}

.cart-close {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: none;
  background: var(--bg-section);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}

.cart-close:hover {
  background: #fee;
  color: #e53;
}

.cart-body {
  flex: 1;
  overflow-y: auto;
  padding: 24px;
}

.cart-empty {
  text-align: center;
  padding: 60px 20px;
  color: var(--text-light);
}

.cart-empty svg {
  width: 64px;
  height: 64px;
  margin: 0 auto 16px;
  opacity: 0.3;
}

.cart-item {
  display: flex;
  gap: 16px;
  padding: 16px 0;
  border-bottom: 1px solid var(--border);
}

.cart-item-img {
  width: 72px;
  height: 72px;
  border-radius: var(--radius);
  background: var(--bg-section);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.cart-item-img svg {
  width: 40px;
  height: 40px;
}

.cart-item-info {
  flex: 1;
}

.cart-item-info h4 {
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 4px;
}

.cart-item-info .cart-item-price {
  color: var(--accent);
  font-weight: 700;
  font-size: 1rem;
}

.cart-item-qty {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 8px;
}

.cart-item-qty button {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: var(--bg-card);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
  transition: var(--transition);
}

.cart-item-qty button:hover {
  background: var(--primary);
  color: var(--text-white);
  border-color: var(--primary);
}

.cart-item-qty span {
  font-weight: 600;
  min-width: 20px;
  text-align: center;
}

.cart-footer {
  padding: 24px;
  border-top: 1px solid var(--border);
}

.cart-total {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
}

.cart-total span {
  font-size: 1rem;
  color: var(--text-secondary);
}

.cart-total strong {
  font-size: 1.4rem;
  color: var(--accent);
}

.cart-footer .btn {
  width: 100%;
  justify-content: center;
}

/* ===== 地图区域 ===== */
.map-container {
  width: 100%;
  height: 300px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: linear-gradient(135deg, #e8f5e9, #c8e6c9);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: 40px;
  position: relative;
}

.map-container svg {
  width: 100%;
  height: 100%;
}

.map-pin {
  position: absolute;
  animation: pinBounce 2s ease-in-out infinite;
}

@keyframes pinBounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

/* ===== 页面标题横幅 ===== */
.page-banner {
  padding: 140px 0 80px;
  background: linear-gradient(135deg, var(--bg-dark), #0d3311);
  text-align: center;
  color: var(--text-white);
  position: relative;
  overflow: hidden;
}

.page-banner::before {
  content: '';
  position: absolute;
  inset: 0;
  opacity: 0.05;
  background-image: radial-gradient(circle, var(--primary-light) 1px, transparent 1px);
  background-size: 40px 40px;
}

.page-banner h1 {
  font-size: 2.8rem;
  font-weight: 900;
  margin-bottom: 12px;
  position: relative;
}

.page-banner p {
  font-size: 1.1rem;
  opacity: 0.7;
  position: relative;
}

.breadcrumb {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 20px;
  font-size: 0.9rem;
  position: relative;
}

.breadcrumb a {
  color: rgba(255,255,255,0.5);
}

.breadcrumb a:hover {
  color: var(--primary-light);
}

.breadcrumb span {
  color: rgba(255,255,255,0.3);
}

.breadcrumb .current {
  color: var(--primary-light);
}

/* ===== 通知提示 ===== */
.toast {
  position: fixed;
  top: 100px;
  right: 30px;
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 16px 24px;
  box-shadow: 0 10px 40px rgba(0,0,0,0.15);
  display: flex;
  align-items: center;
  gap: 12px;
  z-index: 9999;
  transform: translateX(120%);
  transition: var(--transition);
  border-left: 4px solid var(--primary);
}

.toast.show {
  transform: translateX(0);
}

.toast.success {
  border-left-color: var(--primary);
}

.toast.warning {
  border-left-color: var(--accent);
}

.toast-icon {
  width: 24px;
  height: 24px;
  color: var(--primary);
}

.toast.warning .toast-icon {
  color: var(--accent);
}

.toast-msg {
  font-size: 0.9rem;
  font-weight: 500;
}

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .hero .container {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .hero-desc {
    margin: 0 auto 36px;
  }

  .hero-actions {
    justify-content: center;
  }

  .hero-visual {
    max-width: 480px;
    margin: 0 auto;
  }

  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .products-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
  }

  .ai-grid {
    grid-template-columns: 1fr;
  }

  .about-grid {
    grid-template-columns: 1fr;
  }

  .contact-grid {
    grid-template-columns: 1fr;
  }

  .cert-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .team-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .shop-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* ===== 覆盖内联样式的响应式规则 ===== */
@media (max-width: 1024px) {
  [style*="grid-template-columns:repeat(4"] {
    grid-template-columns: repeat(2, 1fr) !important;
  }

  [style*="grid-template-columns:repeat(3"] {
    grid-template-columns: repeat(2, 1fr) !important;
  }
}

@media (max-width: 768px) {
  [style*="grid-template-columns:repeat(4"] {
    grid-template-columns: repeat(2, 1fr) !important;
  }

  [style*="grid-template-columns:repeat(3"] {
    grid-template-columns: 1fr !important;
  }
}

@media (max-width: 480px) {
  [style*="grid-template-columns:repeat(4"] {
    grid-template-columns: 1fr !important;
  }

  [style*="grid-template-columns:repeat(2"] {
    grid-template-columns: 1fr !important;
  }
}

/* ===== 平板端优化 ===== */
@media (max-width: 1024px) {
  .hero .container {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .hero-desc {
    margin: 0 auto 36px;
  }

  .hero-actions {
    justify-content: center;
  }

  .hero-visual {
    max-width: 480px;
    margin: 0 auto;
  }

  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .products-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
  }

  .ai-grid {
    grid-template-columns: 1fr;
  }

  .about-grid {
    grid-template-columns: 1fr;
  }

  .contact-grid {
    grid-template-columns: 1fr;
  }

  .cert-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .team-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .shop-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* ===== 手机端优化 ===== */
@media (max-width: 768px) {
  html {
    font-size: 14px;
  }

  .container {
    padding: 0 16px;
  }

  /* 导航栏移动端优化 */
  .navbar {
    padding: 12px 0;
  }

  .navbar.scrolled {
    padding: 8px 0;
  }

  .nav-logo {
    font-size: 1.2rem;
  }

  .nav-logo svg {
    width: 32px;
    height: 32px;
  }

  .nav-links {
    position: fixed;
    top: 0;
    right: -100%;
    width: 85%;
    max-width: 320px;
    height: 100vh;
    height: 100dvh;
    background: var(--bg-card);
    flex-direction: column;
    padding: 70px 20px 30px;
    gap: 8px;
    box-shadow: -10px 0 40px rgba(0,0,0,0.15);
    transition: var(--transition);
    z-index: 1000;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
  }

  .nav-links.open {
    right: 0;
  }

  .nav-links a {
    color: var(--text-primary) !important;
    font-size: 1rem;
    padding: 14px 16px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    gap: 12px;
  }

  .nav-links a::before {
    content: '';
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--primary);
    opacity: 0.3;
  }

  .nav-links a.active {
    background: rgba(45,122,58,0.1);
  }

  .nav-links a.active::before {
    opacity: 1;
  }

  .nav-cta {
    margin-top: 16px;
    justify-content: center !important;
  }

  .nav-toggle {
    display: flex;
    width: 40px;
    height: 40px;
    align-items: center;
    justify-content: center;
    background: rgba(255,255,255,0.1);
    border-radius: 8px;
  }

  .navbar.scrolled .nav-toggle {
    background: rgba(0,0,0,0.05);
  }

  /* 英雄区移动端优化 */
  .hero {
    min-height: auto;
    padding: 100px 0 60px;
  }

  .hero h1 {
    font-size: 1.75rem;
    line-height: 1.3;
    margin-bottom: 16px;
  }

  .hero-desc {
    font-size: 0.95rem;
    line-height: 1.7;
    margin-bottom: 28px;
  }

  .hero-actions {
    flex-direction: column;
    gap: 12px;
  }

  .hero-actions .btn {
    width: 100%;
    justify-content: center;
    padding: 14px 24px;
    font-size: 0.95rem;
  }

  .hero-illustration {
    max-width: 100%;
    margin-top: 40px;
  }

  .hero-float-card {
    display: none;
  }

  .hero-badge {
    font-size: 0.75rem;
    padding: 5px 12px;
  }

  /* 区块通用优化 */
  .section {
    padding: 50px 0;
  }

  .section-header {
    margin-bottom: 40px;
  }

  .section-tag {
    font-size: 0.75rem;
    padding: 4px 12px;
  }

  .section-title {
    font-size: 1.5rem;
    margin-bottom: 12px;
  }

  .section-desc {
    font-size: 0.9rem;
  }

  /* 统计数据移动端 */
  .stats {
    padding: 50px 0;
  }

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }

  .stat-number {
    font-size: 1.75rem;
  }

  .stat-label {
    font-size: 0.8rem;
  }

  /* 特性卡片移动端 */
  .features-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .feature-card {
    padding: 24px 20px;
  }

  .feature-icon {
    width: 52px;
    height: 52px;
  }

  .feature-icon svg {
    width: 26px;
    height: 26px;
  }

  .feature-card h3 {
    font-size: 1.1rem;
  }

  .feature-card p {
    font-size: 0.85rem;
  }

  /* 产品卡片移动端 */
  .products-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }

  .product-card {
    border-radius: 12px;
  }

  .product-img {
    height: 160px;
  }

  .product-img svg {
    width: 80px;
    height: 80px;
  }

  .product-badge {
    font-size: 0.65rem;
    padding: 3px 8px;
    top: 8px;
    left: 8px;
  }

  .product-info {
    padding: 12px;
  }

  .product-info h3 {
    font-size: 0.85rem;
    margin-bottom: 6px;
  }

  .product-meta {
    font-size: 0.7rem;
    margin-bottom: 8px;
  }

  .product-price .current {
    font-size: 1.1rem;
  }

  .product-price .original {
    font-size: 0.75rem;
  }

  .product-actions {
    margin-top: 12px;
    gap: 6px;
  }

  .product-actions .btn {
    padding: 8px 12px;
    font-size: 0.75rem;
  }

  /* 产品筛选器移动端 */
  .product-filters {
    gap: 8px;
    margin-bottom: 24px;
    flex-wrap: wrap;
  }

  .filter-btn {
    padding: 8px 14px;
    font-size: 0.8rem;
    border-width: 1px;
  }

  /* 溯源时间线移动端 */
  .timeline {
    padding: 20px 0;
  }

  .timeline::before {
    left: 16px;
  }

  .timeline-item {
    margin-bottom: 30px;
  }

  .timeline-item:nth-child(odd),
  .timeline-item:nth-child(even) {
    flex-direction: row;
    padding-left: 48px;
    padding-right: 0;
    text-align: left;
  }

  .timeline-dot {
    left: 16px;
    width: 16px;
    height: 16px;
  }

  .timeline-content {
    padding: 16px;
    border-radius: 12px;
  }

  .timeline-content h3 {
    font-size: 0.95rem;
  }

  .timeline-content p {
    font-size: 0.8rem;
  }

  .timeline-content .trace-data {
    gap: 8px;
    margin-top: 10px;
    padding-top: 10px;
  }

  .timeline-content .trace-data span {
    font-size: 0.7rem;
  }

  /* 溯源搜索移动端 */
  .trace-search {
    margin: 24px 16px 0;
  }

  .trace-search input {
    padding: 14px 50px 14px 16px;
    font-size: 0.9rem;
  }

  .trace-search button {
    width: 40px;
    height: 40px;
    right: 4px;
  }

  /* 认证卡片移动端 */
  .cert-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }

  .cert-card {
    padding: 20px 12px;
  }

  .cert-card svg {
    width: 40px;
    height: 40px;
  }

  .cert-card h4 {
    font-size: 0.85rem;
  }

  .cert-card p {
    font-size: 0.7rem;
  }

  /* 团队成员移动端 */
  .team-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
    margin-top: 40px;
  }

  .team-card {
    padding: 20px 12px;
  }

  .team-avatar {
    width: 56px;
    height: 56px;
    font-size: 1.4rem;
  }

  .team-card h4 {
    font-size: 0.9rem;
  }

  .team-card .role {
    font-size: 0.75rem;
  }

  .team-card p {
    font-size: 0.7rem;
  }

  /* 关于我们页面移动端 */
  .about-img {
    height: 240px;
    border-radius: 16px;
  }

  .about-img svg {
    width: 120px;
    height: 120px;
  }

  .about-content h2 {
    font-size: 1.4rem;
  }

  .about-content p {
    font-size: 0.85rem;
  }

  .about-list li {
    font-size: 0.85rem;
    padding: 8px 0;
  }

  /* 联系表单移动端 */
  .contact-form {
    padding: 24px 16px;
  }

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

  .form-group label {
    font-size: 0.85rem;
    margin-bottom: 6px;
  }

  .form-group input,
  .form-group textarea,
  .form-group select {
    padding: 12px 14px;
    font-size: 16px;
    border-radius: 10px;
  }

  .contact-info-card {
    padding: 16px;
    gap: 12px;
  }

  .contact-info-card .icon {
    width: 44px;
    height: 44px;
  }

  .contact-info-card h4 {
    font-size: 0.9rem;
  }

  .contact-info-card p {
    font-size: 0.8rem;
  }

  /* FAQ移动端 */
  .faq-question {
    padding: 16px;
    font-size: 0.9rem;
  }

  .faq-question svg {
    width: 18px;
    height: 18px;
  }

  .faq-answer-inner {
    padding: 0 16px 16px;
    font-size: 0.8rem;
  }

  /* 购物车侧边栏移动端 */
  .cart-sidebar {
    width: 100%;
    right: -100%;
    max-width: 400px;
  }

  .cart-header {
    padding: 16px 20px;
  }

  .cart-header h3 {
    font-size: 1.1rem;
  }

  .cart-body {
    padding: 16px 20px;
  }

  .cart-item {
    gap: 12px;
    padding: 12px 0;
  }

  .cart-item-img {
    width: 60px;
    height: 60px;
  }

  .cart-item-info h4 {
    font-size: 0.85rem;
  }

  .cart-item-info .cart-item-price {
    font-size: 0.9rem;
  }

  .cart-footer {
    padding: 16px 20px;
  }

  .cart-total strong {
    font-size: 1.2rem;
  }

  /* AI助手移动端 */
  .ai-assistant {
    bottom: 20px;
    right: 16px;
  }

  .ai-assistant-btn {
    width: 52px;
    height: 52px;
  }

  .ai-assistant-btn svg {
    width: 24px;
    height: 24px;
  }

  .ai-assistant-panel {
    width: calc(100vw - 32px);
    max-width: 360px;
    right: -8px;
    bottom: 64px;
  }

  .ai-chat-body {
    height: 320px;
    padding: 16px;
  }

  .chat-msg .msg-bubble {
    padding: 10px 14px;
    font-size: 0.85rem;
  }

  .ai-chat-input {
    padding: 12px 16px;
  }

  .ai-chat-input input {
    padding: 10px 14px;
    font-size: 15px;
  }

  /* 回到顶部按钮移动端 */
  .back-to-top {
    bottom: 20px;
    left: 16px;
    width: 40px;
    height: 40px;
  }

  /* 页脚移动端 */
  .footer {
    padding: 50px 0 0;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
    padding-bottom: 32px;
  }

  .footer-brand .footer-logo {
    font-size: 1.2rem;
  }

  .footer-brand p {
    font-size: 0.85rem;
  }

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

  .footer-col a {
    font-size: 0.85rem;
    padding: 5px 0;
  }

  .footer-bottom {
    flex-direction: column;
    gap: 16px;
    text-align: center;
    padding: 20px 0;
  }

  .footer-bottom span {
    font-size: 0.75rem;
  }

  .footer-social a {
    width: 36px;
    height: 36px;
  }

  /* 页面横幅移动端 */
  .page-banner {
    padding: 100px 0 50px;
  }

  .page-banner h1 {
    font-size: 1.6rem;
  }

  .page-banner p {
    font-size: 0.9rem;
  }

  .breadcrumb {
    font-size: 0.8rem;
    margin-top: 16px;
  }

  /* 模态框移动端 */
  .modal-overlay {
    padding: 16px;
    align-items: flex-end;
  }

  .modal {
    max-height: 85vh;
    border-radius: 20px 20px 0 0;
  }

  .modal-header {
    padding: 16px 20px;
  }

  .modal-header h3 {
    font-size: 1rem;
  }

  .modal-body {
    padding: 16px 20px;
  }

  /* 标签页移动端 */
  .tabs {
    gap: 4px;
    padding: 4px;
    border-radius: 12px;
    margin-bottom: 24px;
    overflow-x: auto;
    flex-wrap: nowrap;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
  }

  .tabs::-webkit-scrollbar {
    display: none;
  }

  .tab-btn {
    padding: 8px 16px;
    font-size: 0.8rem;
    white-space: nowrap;
  }

  /* 地图移动端 */
  .map-container {
    height: 200px;
    margin-top: 24px;
  }

  /* 加载动画移动端 */
  .page-loader {
    padding: 20px;
  }

  .loader-spinner {
    width: 40px;
    height: 40px;
  }

  .loader-text {
    font-size: 0.8rem;
  }

  /* Toast提示移动端 */
  .toast {
    top: 80px;
    right: 16px;
    left: 16px;
    padding: 12px 16px;
    transform: translateY(-120%);
  }

  .toast.show {
    transform: translateY(0);
  }

  /* 商店卡片移动端 */
  .shop-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .shop-card {
    display: flex;
    flex-direction: row;
    align-items: center;
  }

  .shop-card-img {
    width: 120px;
    height: 120px;
    flex-shrink: 0;
  }

  .shop-card-body {
    flex: 1;
    padding: 16px;
  }

  .shop-card-body h3 {
    font-size: 1rem;
  }

  .shop-card-body .desc {
    font-size: 0.8rem;
    margin-bottom: 12px;
  }

  .shop-card-body .price {
    font-size: 1.2rem;
  }

  /* 商店横幅移动端 */
  .shop-banner {
    padding: 40px 0;
  }

  .shop-banner h2 {
    font-size: 1.5rem;
  }

  .shop-banner p {
    font-size: 0.9rem;
  }
}

/* ===== 小屏手机深度优化 ===== */
@media (max-width: 480px) {
  html {
    font-size: 13px;
  }

  .container {
    padding: 0 12px;
  }

  /* 导航栏小屏 */
  .nav-logo {
    font-size: 1.1rem;
    gap: 6px;
  }

  .nav-logo svg {
    width: 28px;
    height: 28px;
  }

  .nav-links {
    width: 90%;
    padding: 60px 16px 24px;
  }

  .nav-links a {
    font-size: 0.9rem;
    padding: 12px 14px;
  }

  /* 英雄区小屏 */
  .hero {
    padding: 80px 0 40px;
  }

  .hero h1 {
    font-size: 1.5rem;
  }

  .hero-desc {
    font-size: 0.85rem;
    margin-bottom: 20px;
  }

  .hero-actions .btn {
    padding: 12px 20px;
    font-size: 0.9rem;
  }

  .hero-illustration {
    margin-top: 24px;
  }

  .hero-illustration svg {
    max-height: 200px;
  }

  .hero-float-card {
    display: none;
  }

  /* 区块小屏 */
  .section {
    padding: 36px 0;
  }

  .section-header {
    margin-bottom: 28px;
  }

  .section-title {
    font-size: 1.3rem;
  }

  .section-desc {
    font-size: 0.85rem;
  }

  /* 统计小屏 */
  .stats {
    padding: 36px 0;
  }

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }

  .stat-number {
    font-size: 1.5rem;
  }

  .stat-label {
    font-size: 0.75rem;
  }

  /* 特性卡片小屏 */
  .feature-card {
    padding: 20px 16px;
  }

  .feature-card h3 {
    font-size: 1rem;
  }

  .feature-card p {
    font-size: 0.8rem;
  }

  /* 产品卡片小屏 - 单列 */
  .products-grid {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .product-img {
    height: 180px;
  }

  .product-img svg {
    width: 90px;
    height: 90px;
  }

  .product-info {
    padding: 14px;
  }

  .product-info h3 {
    font-size: 0.95rem;
  }

  .product-price .current {
    font-size: 1.2rem;
  }

  .product-actions {
    flex-direction: row;
  }

  .product-actions .btn {
    flex: 1;
  }

  /* 筛选器小屏 */
  .product-filters {
    gap: 6px;
    justify-content: flex-start;
    overflow-x: auto;
    flex-wrap: nowrap;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    padding-bottom: 4px;
  }

  .product-filters::-webkit-scrollbar {
    display: none;
  }

  .filter-btn {
    padding: 7px 14px;
    font-size: 0.75rem;
    white-space: nowrap;
    flex-shrink: 0;
  }

  /* 溯源小屏 */
  .trace-search input {
    font-size: 0.85rem;
    padding: 12px 44px 12px 14px;
  }

  .trace-search button {
    width: 36px;
    height: 36px;
  }

  .timeline-item {
    margin-bottom: 20px;
  }

  .timeline-item:nth-child(odd),
  .timeline-item:nth-child(even) {
    padding-left: 40px;
  }

  .timeline-dot {
    width: 14px;
    height: 14px;
    left: 14px;
  }

  .timeline-content {
    padding: 12px;
  }

  .timeline-content h3 {
    font-size: 0.85rem;
    margin-bottom: 6px;
  }

  .timeline-content p {
    font-size: 0.75rem;
    line-height: 1.5;
  }

  .timeline-content .trace-data {
    margin-top: 8px;
    padding-top: 8px;
    gap: 6px;
  }

  .timeline-content .trace-data span {
    font-size: 0.65rem;
  }

  /* 认证小屏 */
  .cert-grid {
    grid-template-columns: 1fr 1fr;
    gap: 8px;
  }

  .cert-card {
    padding: 16px 10px;
  }

  .cert-card svg {
    width: 32px;
    height: 32px;
    margin-bottom: 10px;
  }

  .cert-card h4 {
    font-size: 0.8rem;
  }

  .cert-card p {
    font-size: 0.65rem;
  }

  /* 团队小屏 */
  .team-grid {
    grid-template-columns: 1fr 1fr;
    gap: 10px;
  }

  .team-card {
    padding: 16px 10px;
  }

  .team-avatar {
    width: 48px;
    height: 48px;
    font-size: 1.2rem;
    margin-bottom: 10px;
  }

  .team-card h4 {
    font-size: 0.85rem;
  }

  .team-card .role {
    font-size: 0.7rem;
  }

  .team-card p {
    font-size: 0.65rem;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
  }

  /* 关于页面小屏 */
  .about-img {
    height: 180px;
  }

  .about-img svg {
    width: 80px;
    height: 80px;
  }

  .about-content h2 {
    font-size: 1.2rem;
  }

  .about-content p {
    font-size: 0.8rem;
  }

  .about-list li {
    font-size: 0.8rem;
    padding: 6px 0;
    gap: 8px;
  }

  .about-list li svg {
    width: 16px;
    height: 16px;
  }

  /* AI聊天小屏 */
  .ai-chat-demo {
    border-radius: 14px;
  }

  .ai-chat-header {
    padding: 12px 16px;
  }

  .ai-chat-header .avatar {
    width: 32px;
    height: 32px;
  }

  .ai-chat-body {
    height: 280px;
    padding: 12px;
  }

  .chat-msg .msg-avatar {
    width: 26px;
    height: 26px;
    font-size: 0.7rem;
  }

  .chat-msg .msg-bubble {
    padding: 8px 12px;
    font-size: 0.8rem;
    border-radius: 12px;
  }

  .ai-feature-item {
    padding: 16px;
    gap: 12px;
  }

  .ai-feature-item .icon {
    width: 44px;
    height: 44px;
  }

  .ai-feature-item .icon svg {
    width: 22px;
    height: 22px;
  }

  .ai-feature-item h4 {
    font-size: 0.9rem;
  }

  .ai-feature-item p {
    font-size: 0.75rem;
  }

  /* 联系表单小屏 */
  .contact-form {
    padding: 20px 14px;
    border-radius: 14px;
  }

  .form-group input,
  .form-group textarea,
  .form-group select {
    padding: 11px 12px;
    font-size: 16px;
    border-radius: 8px;
  }

  .form-group textarea {
    height: 100px;
  }

  .contact-info-card {
    padding: 12px;
    gap: 10px;
  }

  .contact-info-card .icon {
    width: 40px;
    height: 40px;
    border-radius: 10px;
  }

  .contact-info-card .icon svg {
    width: 20px;
    height: 20px;
  }

  .contact-info-card h4 {
    font-size: 0.85rem;
  }

  .contact-info-card p {
    font-size: 0.75rem;
  }

  /* FAQ小屏 */
  .faq-item {
    margin-bottom: 8px;
    border-radius: 10px;
  }

  .faq-question {
    padding: 14px;
    font-size: 0.85rem;
  }

  .faq-answer-inner {
    padding: 0 14px 14px;
    font-size: 0.75rem;
    line-height: 1.6;
  }

  /* 商店卡片小屏 */
  .shop-card {
    flex-direction: column;
  }

  .shop-card-img {
    width: 100%;
    height: 140px;
  }

  .shop-card-body {
    padding: 14px;
  }

  .shop-card-body h3 {
    font-size: 0.95rem;
  }

  .shop-card-body .desc {
    font-size: 0.75rem;
    margin-bottom: 10px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
  }

  .shop-card-body .price-row {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }

  .shop-card-body .price {
    font-size: 1.1rem;
  }

  .shop-card-body .btn {
    padding: 8px 14px;
    font-size: 0.75rem;
  }

  /* 购物车小屏 */
  .cart-sidebar {
    max-width: 100%;
  }

  .cart-item-img {
    width: 50px;
    height: 50px;
  }

  .cart-item-img svg {
    width: 30px;
    height: 30px;
  }

  /* AI助手小屏 */
  .ai-assistant-btn {
    width: 46px;
    height: 46px;
  }

  .ai-assistant-panel {
    width: calc(100vw - 24px);
    max-width: 340px;
    bottom: 58px;
    right: -6px;
    border-radius: 16px;
  }

  .ai-chat-body {
    height: 260px;
  }

  /* 回到顶部小屏 */
  .back-to-top {
    width: 36px;
    height: 36px;
    bottom: 16px;
    left: 12px;
  }

  .back-to-top svg {
    width: 16px;
    height: 16px;
  }

  /* 页脚小屏 */
  .footer {
    padding: 36px 0 0;
  }

  .footer-grid {
    gap: 24px;
    padding-bottom: 24px;
  }

  .footer-brand .footer-logo {
    font-size: 1.1rem;
  }

  .footer-brand p {
    font-size: 0.8rem;
  }

  .footer-social a {
    width: 32px;
    height: 32px;
  }

  .footer-social a svg {
    width: 14px;
    height: 14px;
  }

  /* 页面横幅小屏 */
  .page-banner {
    padding: 80px 0 36px;
  }

  .page-banner h1 {
    font-size: 1.35rem;
  }

  .page-banner p {
    font-size: 0.85rem;
  }

  /* 商店横幅小屏 */
  .shop-banner {
    padding: 30px 0;
  }

  .shop-banner h2 {
    font-size: 1.2rem;
  }

  .shop-banner p {
    font-size: 0.85rem;
  }

  /* 地图小屏 */
  .map-container {
    height: 160px;
    border-radius: 14px;
  }

  /* 模态框小屏 */
  .modal-overlay {
    padding: 0;
  }

  .modal {
    max-height: 90vh;
    border-radius: 20px 20px 0 0;
  }

  .modal-body > div:first-child {
    height: 150px;
  }

  /* 标签页小屏 */
  .tabs {
    border-radius: 10px;
    margin-bottom: 20px;
  }

  .tab-btn {
    padding: 7px 12px;
    font-size: 0.75rem;
  }

  /* 按钮通用小屏 */
  .btn {
    padding: 11px 20px;
    font-size: 0.85rem;
  }

  .btn-sm {
    padding: 8px 14px;
    font-size: 0.75rem;
  }

  .btn-lg {
    padding: 13px 28px;
    font-size: 0.95rem;
  }
}

/* ===== 安全区域适配(刘海屏/全面屏) ===== */
@supports (padding: env(safe-area-inset-bottom)) {
  .navbar {
    padding-left: env(safe-area-inset-left);
    padding-right: env(safe-area-inset-right);
  }

  .nav-links {
    padding-bottom: env(safe-area-inset-bottom, 30px);
  }

  .footer-bottom {
    padding-bottom: calc(20px + env(safe-area-inset-bottom, 0px));
  }

  .ai-assistant {
    bottom: calc(20px + env(safe-area-inset-bottom, 0px));
  }

  .back-to-top {
    bottom: calc(20px + env(safe-area-inset-bottom, 0px));
  }

  .cart-sidebar {
    padding-bottom: env(safe-area-inset-bottom, 0px);
  }

  .cart-footer {
    padding-bottom: calc(16px + env(safe-area-inset-bottom, 0px));
  }

  .ai-assistant-panel {
    bottom: calc(64px + env(safe-area-inset-bottom, 0px));
  }

  .page-banner {
    padding-top: calc(100px + env(safe-area-inset-top, 0px));
  }

  .hero {
    padding-top: calc(100px + env(safe-area-inset-top, 0px));
  }
}

/* ===== 触摸交互优化 ===== */
@media (hover: none) and (pointer: coarse) {
  .btn {
    min-height: 44px;
    min-width: 44px;
  }

  .filter-btn {
    min-height: 40px;
  }

  .tab-btn {
    min-height: 40px;
  }

  .faq-question {
    min-height: 48px;
  }

  .nav-links a {
    min-height: 48px;
  }

  .product-actions .btn {
    min-height: 40px;
  }

  .contact-info-card {
    min-height: 48px;
  }

  .footer-col a {
    min-height: 36px;
    display: flex;
    align-items: center;
  }

  .footer-social a {
    min-width: 44px;
    min-height: 44px;
  }

  .cart-close {
    width: 44px;
    height: 44px;
  }

  .modal-close {
    width: 44px;
    height: 44px;
  }

  .ai-chat-input button {
    width: 48px;
    height: 48px;
  }

  .feature-card:hover {
    transform: none;
  }

  .product-card:hover {
    transform: none;
  }

  .shop-card:hover {
    transform: none;
  }

  .cert-card:hover {
    transform: none;
  }

  .team-card:hover {
    transform: none;
  }

  .contact-info-card:hover {
    transform: none;
  }

  .ai-feature-item:hover {
    transform: none;
  }

  .btn:hover {
    transform: none;
  }

  .btn-primary:hover {
    box-shadow: 0 4px 20px rgba(45,122,58,0.4);
  }

  .btn-accent:hover {
    box-shadow: 0 4px 20px rgba(255,143,0,0.4);
  }

  .btn-outline:hover {
    background: rgba(255,255,255,0.05);
  }

  .navbar.scrolled .btn-outline:hover {
    background: rgba(45,122,58,0.05);
  }
}

/* ===== 横屏手机优化 ===== */
@media (max-width: 896px) and (orientation: landscape) {
  .hero {
    min-height: auto;
    padding: 80px 0 40px;
  }

  .hero h1 {
    font-size: 1.5rem;
  }

  .hero-illustration {
    max-width: 300px;
  }

  .ai-chat-body {
    height: 200px;
  }

  .ai-assistant-panel {
    max-height: 70vh;
  }

  .page-banner {
    padding: 80px 0 30px;
  }

  .modal {
    max-height: 80vh;
  }
}

/* ===== 暗色模式偏好 ===== */
@media (prefers-color-scheme: dark) {
  :root {
    --bg-card: #1a1a2e;
    --bg-section: #16213e;
    --text-primary: #e0e0e0;
    --text-secondary: #aaa;
    --text-light: #777;
    --border: #2a2a4a;
    --shadow: 0 4px 20px rgba(0,0,0,0.3);
  }
}

/* ===== 减少动画偏好 ===== */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .hero-particle,
  .hero-float-card,
  .ripple,
  .loader-spinner {
    animation: none !important;
  }

  html {
    scroll-behavior: auto;
  }
}

/* ===== 打字效果 ===== */
.typing-cursor {
  display: inline-block;
  width: 2px;
  height: 1em;
  background: var(--primary);
  margin-left: 2px;
  animation: blink 1s step-end infinite;
  vertical-align: text-bottom;
}

@keyframes blink {
  50% { opacity: 0; }
}

/* ===== 数字滚动 ===== */
.count-up {
  display: inline-block;
}

/* ===== 进度条 ===== */
.progress-bar {
  width: 100%;
  height: 8px;
  background: var(--border);
  border-radius: 4px;
  overflow: hidden;
  margin-top: 8px;
}

.progress-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--primary), var(--primary-light));
  border-radius: 4px;
  width: 0;
  transition: width 1.5s ease;
}

/* ===== 标签页 ===== */
.tabs {
  display: flex;
  gap: 4px;
  background: var(--bg-section);
  padding: 4px;
  border-radius: 50px;
  margin-bottom: 40px;
  justify-content: center;
}

.tab-btn {
  padding: 10px 24px;
  border-radius: 50px;
  border: none;
  background: transparent;
  font-family: var(--font-main);
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
  cursor: pointer;
  transition: var(--transition);
}

.tab-btn.active {
  background: var(--bg-card);
  color: var(--primary);
  box-shadow: 0 2px 8px rgba(0,0,0,0.08);
}

.tab-content {
  display: none;
}

.tab-content.active {
  display: block;
  animation: fadeInUp 0.5s ease;
}

/* ===== 模态框 ===== */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.6);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: var(--transition);
  padding: 20px;
}

.modal-overlay.open {
  opacity: 1;
  pointer-events: all;
}

.modal {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  max-width: 600px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  transform: scale(0.9) translateY(20px);
  transition: var(--transition);
}

.modal-overlay.open .modal {
  transform: scale(1) translateY(0);
}

.modal-header {
  padding: 24px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-header h3 {
  font-size: 1.2rem;
  font-weight: 700;
}

.modal-close {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: none;
  background: var(--bg-section);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}

.modal-close:hover {
  background: #fee;
}

.modal-body {
  padding: 24px;
}

/* ===== 轮播 ===== */
.carousel {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-lg);
}

.carousel-track {
  display: flex;
  transition: transform 0.5s ease;
}

.carousel-slide {
  min-width: 100%;
  padding: 0;
}

.carousel-dots {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 20px;
}

.carousel-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--border);
  border: none;
  cursor: pointer;
  transition: var(--transition);
}

.carousel-dot.active {
  background: var(--primary);
  width: 30px;
  border-radius: 5px;
}

/* ===== 骨架屏 ===== */
.skeleton {
  background: linear-gradient(90deg, var(--border) 25%, #f0f0f0 50%, var(--border) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: 4px;
}

@keyframes shimmer {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}