/* ============================================
   盒小胖包装 - 企业官网样式
   简约大气 | 响应式设计
   ============================================ */

/* CSS 变量 */
:root {
  --color-primary: #1a1a1a;
  --color-accent: #b8956a;
  --color-accent-light: #d4b896;
  --color-accent-dark: #9a7a52;
  --color-bg: #faf8f3;
  --color-bg-alt: #f3efe8;
  --color-white: #ffffff;
  --color-text: #2c2c2c;
  --color-text-light: #666666;
  --color-text-muted: #999999;
  --color-border: #e5e0d8;
  --color-overlay: rgba(26, 26, 26, 0.75);

  --font-sans: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-serif: "Noto Serif SC", "Songti SC", serif;

  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.12);

  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;

  --transition: 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);

  --header-height: 72px;
  --max-width: 1200px;
}

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

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

body {
  font-family: var(--font-sans);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.7;
  overflow-x: hidden;
}

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

ul {
  list-style: none;
}

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

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

/* 通用按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 36px;
  font-size: 0.95rem;
  font-weight: 500;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition);
  border: none;
  letter-spacing: 1px;
}

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

.btn-primary:hover {
  background: var(--color-accent-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-outline {
  background: transparent;
  color: var(--color-white);
  border: 1.5px solid var(--color-white);
}

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

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

.btn-dark:hover {
  background: #333;
  transform: translateY(-2px);
}

/* 通用标题区 */
.section-header {
  text-align: center;
  margin-bottom: 56px;
}

.section-header .label {
  display: inline-block;
  font-size: 0.8rem;
  color: var(--color-accent);
  letter-spacing: 3px;
  text-transform: uppercase;
  margin-bottom: 12px;
  font-weight: 600;
}

.section-header h2 {
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 16px;
}

.section-header p {
  font-size: 1rem;
  color: var(--color-text-light);
  max-width: 600px;
  margin: 0 auto;
}

.section-header .divider {
  width: 48px;
  height: 3px;
  background: var(--color-accent);
  margin: 20px auto 0;
  border-radius: 2px;
}

/* ============================================
   导航栏
   ============================================ */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  z-index: 1000;
  transition: all var(--transition);
  border-bottom: 1px solid transparent;
}

.navbar.scrolled {
  border-bottom-color: var(--color-border);
  box-shadow: var(--shadow-sm);
}

.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--color-primary);
}

.nav-logo .logo-icon {
  width: 40px;
  height: 40px;
  flex-shrink: 0;
}

.nav-logo .logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.nav-logo .logo-text .main {
  font-size: 1.1rem;
}

.nav-logo .logo-text .sub {
  font-size: 0.65rem;
  color: var(--color-accent);
  letter-spacing: 2px;
}

.nav-links {
  display: flex;
  gap: 8px;
}

.nav-links a {
  position: relative;
  padding: 8px 18px;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--color-text);
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: 4px;
  left: 50%;
  width: 0;
  height: 2px;
  background: var(--color-accent);
  transition: all var(--transition);
  transform: translateX(-50%);
}

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

.nav-links a:hover::after,
.nav-links a.active::after {
  width: 60%;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 6px;
}

.nav-toggle span {
  width: 24px;
  height: 2px;
  background: var(--color-primary);
  transition: all var(--transition);
  border-radius: 2px;
}

.nav-toggle.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.nav-toggle.active span:nth-child(2) {
  opacity: 0;
}
.nav-toggle.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ============================================
   Hero 区
   ============================================ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  background: linear-gradient(135deg, #1a1a1a 0%, #2c2825 50%, #1a1a1a 100%);
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='80' height='80' viewBox='0 0 80 80'%3E%3Cg fill='%23b8956a' fill-opacity='0.04'%3E%3Crect width='80' height='80'/%3E%3Cpath d='M20 20h40v40H20z' fill='none' stroke='%23b8956a' stroke-opacity='0.08'/%3E%3C/g%3E%3C/svg%3E");
  opacity: 0.5;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 120px;
  background: linear-gradient(to bottom, transparent, var(--color-bg));
}

.hero-content {
  position: relative;
  z-index: 2;
  padding: 0 24px;
  max-width: 800px;
  animation: fadeInUp 1s ease-out;
}

.hero .badge {
  display: inline-block;
  padding: 6px 18px;
  background: rgba(184, 149, 106, 0.15);
  border: 1px solid rgba(184, 149, 106, 0.3);
  color: var(--color-accent-light);
  font-size: 0.8rem;
  letter-spacing: 2px;
  border-radius: 50px;
  margin-bottom: 28px;
}

.hero h1 {
  font-size: 3.5rem;
  font-weight: 700;
  color: var(--color-white);
  line-height: 1.25;
  margin-bottom: 24px;
  letter-spacing: 2px;
}

.hero h1 .highlight {
  color: var(--color-accent);
}

.hero .subtitle {
  font-size: 1.15rem;
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: 40px;
  line-height: 1.8;
}

.hero-buttons {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

.scroll-indicator {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  color: rgba(255, 255, 255, 0.5);
  font-size: 0.75rem;
  letter-spacing: 2px;
  text-align: center;
}

.scroll-indicator .arrow {
  display: block;
  margin: 8px auto 0;
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, rgba(255,255,255,0.5), transparent);
  animation: scrollDown 2s infinite;
}

/* ============================================
   通用 Section 样式
   ============================================ */
.section {
  padding: 100px 0;
}

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

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

.section-black {
  background: var(--color-primary);
  color: var(--color-white);
}

/* ============================================
   首页 - 公司简介区
   ============================================ */
.intro {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.intro-text .label {
  display: inline-block;
  font-size: 0.8rem;
  color: var(--color-accent);
  letter-spacing: 3px;
  text-transform: uppercase;
  margin-bottom: 16px;
  font-weight: 600;
}

.intro-text h2 {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 20px;
  color: var(--color-primary);
  line-height: 1.4;
}

.intro-text p {
  color: var(--color-text-light);
  margin-bottom: 16px;
  font-size: 0.95rem;
}

.intro-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 32px;
  padding-top: 32px;
  border-top: 1px solid var(--color-border);
}

.intro-stats .stat-item .num {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--color-accent);
}

.intro-stats .stat-item .label-text {
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

.intro-visual {
  position: relative;
  height: 420px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.intro-visual svg {
  width: 100%;
  max-width: 420px;
  height: auto;
}

/* ============================================
   首页 - 产品亮点
   ============================================ */
.product-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.product-card {
  background: var(--color-white);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
  border: 1px solid var(--color-border);
}

.product-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-accent-light);
}

.product-card .card-icon {
  height: 324px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--color-bg-alt) 0%, #ebe5db 100%);
}

.product-card .card-icon svg {
  width: 100px;
  height: 100px;
}

.product-card .card-icon img,
.product-detail-card .card-visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  transition: transform var(--transition);
}

.product-card:hover .card-icon img,
.product-detail-card:hover .card-visual img {
  transform: scale(1.05);
}

.product-card .card-body {
  padding: 28px;
}

.product-card .card-body h3 {
  font-size: 1.2rem;
  font-weight: 600;
  margin-bottom: 10px;
  color: var(--color-primary);
}

.product-card .card-body p {
  font-size: 0.88rem;
  color: var(--color-text-light);
  margin-bottom: 16px;
}

.product-card .card-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.85rem;
  color: var(--color-accent);
  font-weight: 500;
}

.product-card .card-link:hover {
  gap: 12px;
}

/* ============================================
   首页 - 为什么选择我们
   ============================================ */
.features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
}

.feature-item {
  text-align: center;
  padding: 36px 20px;
  border-radius: var(--radius-md);
  transition: all var(--transition);
}

.feature-item:hover {
  background: var(--color-white);
  box-shadow: var(--shadow-md);
}

.feature-item .feature-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-accent);
  border-radius: 50%;
  color: var(--color-white);
}

.feature-item .feature-icon svg {
  width: 30px;
  height: 30px;
}

.feature-item h3 {
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 10px;
  color: var(--color-primary);
}

.feature-item p {
  font-size: 0.85rem;
  color: var(--color-text-light);
}

/* ============================================
   CTA 区
   ============================================ */
.cta-section {
  position: relative;
  padding: 80px 0;
  background: linear-gradient(135deg, #1a1a1a 0%, #2c2825 100%);
  text-align: center;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='80' height='80' viewBox='0 0 80 80'%3E%3Crect width='80' height='80' fill='%23b8956a' fill-opacity='0.03'/%3E%3C/svg%3E");
}

.cta-section .container {
  position: relative;
  z-index: 1;
}

.cta-section h2 {
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: 16px;
}

.cta-section p {
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: 32px;
  font-size: 1rem;
}

/* ============================================
   关于我们页面
   ============================================ */
.page-hero {
  position: relative;
  padding: 140px 0 80px;
  background: linear-gradient(135deg, #1a1a1a 0%, #2c2825 50%, #1a1a1a 100%);
  text-align: center;
  overflow: hidden;
}

.page-hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='80' height='80' viewBox='0 0 80 80'%3E%3Cg fill='%23b8956a' fill-opacity='0.04'%3E%3Crect width='80' height='80'/%3E%3C/g%3E%3C/svg%3E");
}

.page-hero .container {
  position: relative;
  z-index: 1;
}

.page-hero h1 {
  font-size: 2.8rem;
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: 14px;
}

.page-hero .breadcrumb {
  color: rgba(255, 255, 255, 0.6);
  font-size: 0.9rem;
}

.page-hero .breadcrumb a:hover {
  color: var(--color-accent-light);
}

.page-hero .breadcrumb span {
  margin: 0 8px;
  color: rgba(255, 255, 255, 0.3);
}

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

.about-intro .visual {
  position: relative;
  height: 400px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.about-intro .visual svg {
  width: 100%;
  max-width: 380px;
  height: auto;
}

.about-text h2 {
  font-size: 1.8rem;
  font-weight: 700;
  margin-bottom: 24px;
  color: var(--color-primary);
}

.about-text p {
  color: var(--color-text-light);
  margin-bottom: 16px;
  font-size: 0.95rem;
}

.about-text .signature {
  margin-top: 28px;
  padding-top: 28px;
  border-top: 1px solid var(--color-border);
}

.about-text .signature .name {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--color-primary);
}

.about-text .signature .title {
  font-size: 0.85rem;
  color: var(--color-accent);
}

/* 发展历程 */
.timeline {
  position: relative;
  max-width: 800px;
  margin: 0 auto;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 50%;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--color-border);
  transform: translateX(-50%);
}

.timeline-item {
  position: relative;
  width: 50%;
  padding: 0 40px 40px;
}

.timeline-item:nth-child(odd) {
  left: 0;
  text-align: right;
}

.timeline-item:nth-child(even) {
  left: 50%;
}

.timeline-item::before {
  content: '';
  position: absolute;
  top: 6px;
  width: 14px;
  height: 14px;
  background: var(--color-accent);
  border-radius: 50%;
  border: 3px solid var(--color-bg);
  z-index: 1;
}

.timeline-item:nth-child(odd)::before {
  right: -7px;
}

.timeline-item:nth-child(even)::before {
  left: -7px;
}

.timeline-item .year {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--color-accent);
  margin-bottom: 8px;
}

.timeline-item h4 {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 8px;
}

.timeline-item p {
  font-size: 0.88rem;
  color: var(--color-text-light);
}

/* 企业文化/价值观 */
.values-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.value-card {
  background: var(--color-white);
  padding: 40px 28px;
  border-radius: var(--radius-md);
  text-align: center;
  border: 1px solid var(--color-border);
  transition: all var(--transition);
}

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

.value-card .value-icon {
  width: 56px;
  height: 56px;
  margin: 0 auto 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-bg-alt);
  border-radius: var(--radius-md);
  color: var(--color-accent);
}

.value-card .value-icon svg {
  width: 28px;
  height: 28px;
}

.value-card h3 {
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 12px;
  color: var(--color-primary);
}

.value-card p {
  font-size: 0.88rem;
  color: var(--color-text-light);
}

/* ============================================
   产品服务页面
   ============================================ */
.products-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 36px;
}

.product-detail-card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border);
  transition: all var(--transition);
}

.product-detail-card:hover {
  box-shadow: var(--shadow-lg);
  border-color: var(--color-accent-light);
}

.product-detail-card .card-visual {
  height: 432px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--color-bg-alt) 0%, #ebe5db 100%);
}

.product-detail-card .card-visual svg {
  width: 130px;
  height: 130px;
}

.product-detail-card .card-content {
  padding: 32px;
}

.product-detail-card .card-content .tag {
  display: inline-block;
  padding: 4px 12px;
  background: var(--color-bg-alt);
  color: var(--color-accent);
  font-size: 0.75rem;
  border-radius: 50px;
  margin-bottom: 12px;
  font-weight: 500;
}

.product-detail-card .card-content h3 {
  font-size: 1.3rem;
  font-weight: 600;
  margin-bottom: 12px;
  color: var(--color-primary);
}

.product-detail-card .card-content .desc {
  font-size: 0.9rem;
  color: var(--color-text-light);
  margin-bottom: 20px;
}

.product-detail-card .feature-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.product-detail-card .feature-list li {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 6px 14px;
  background: var(--color-bg-alt);
  border-radius: 50px;
  font-size: 0.78rem;
  color: var(--color-text);
}

.product-detail-card .feature-list li::before {
  content: '';
  width: 6px;
  height: 6px;
  background: var(--color-accent);
  border-radius: 50%;
  flex-shrink: 0;
}

/* 定制流程 */
.process-section {
  background: var(--color-primary);
  color: var(--color-white);
}

.process-section .section-header h2 {
  color: var(--color-white);
}

.process-section .section-header p {
  color: rgba(255, 255, 255, 0.6);
}

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

.process-step {
  text-align: center;
  position: relative;
}

.process-step .step-number {
  width: 64px;
  height: 64px;
  margin: 0 auto 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(184, 149, 106, 0.15);
  border: 2px solid var(--color-accent);
  border-radius: 50%;
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--color-accent-light);
}

.process-step h4 {
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 10px;
}

.process-step p {
  font-size: 0.83rem;
  color: rgba(255, 255, 255, 0.55);
  line-height: 1.6;
}

.process-step::after {
  content: '';
  position: absolute;
  top: 32px;
  right: -50%;
  width: 100%;
  height: 1px;
  background: rgba(184, 149, 106, 0.2);
  z-index: 0;
}

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

/* 小批量定制优势 */
.batch-highlight {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.batch-highlight .visual {
  position: relative;
  height: 380px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.batch-highlight .visual svg {
  width: 100%;
  max-width: 360px;
  height: auto;
}

.batch-highlight .content .label {
  display: inline-block;
  font-size: 0.8rem;
  color: var(--color-accent);
  letter-spacing: 3px;
  text-transform: uppercase;
  margin-bottom: 16px;
  font-weight: 600;
}

.batch-highlight .content h2 {
  font-size: 1.9rem;
  font-weight: 700;
  margin-bottom: 20px;
  color: var(--color-primary);
}

.batch-highlight .content p {
  color: var(--color-text-light);
  margin-bottom: 24px;
  font-size: 0.95rem;
}

.batch-list {
  display: grid;
  gap: 14px;
}

.batch-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 0.9rem;
  color: var(--color-text);
}

.batch-list li .check {
  width: 20px;
  height: 20px;
  background: var(--color-accent);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin-top: 2px;
}

.batch-list li .check svg {
  width: 12px;
  height: 12px;
  color: var(--color-white);
}

/* ============================================
   联系我们页面
   ============================================ */
.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 48px;
}

.contact-info .info-item {
  display: flex;
  gap: 16px;
  margin-bottom: 28px;
  padding-bottom: 28px;
  border-bottom: 1px solid var(--color-border);
}

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

.contact-info .info-item.qrcode-item {
  justify-content: center;
  padding-top: 8px;
}

.contact-info .qrcode-wrap {
  text-align: center;
}

.contact-info .qrcode-wrap img {
  width: 160px;
  height: 160px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
}

.contact-info .qrcode-wrap p {
  margin-top: 10px;
  font-size: 0.85rem;
  color: var(--color-text-light);
}

.contact-info .info-item .icon {
  width: 48px;
  height: 48px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-bg-alt);
  border-radius: var(--radius-md);
  color: var(--color-accent);
}

.contact-info .info-item .icon svg {
  width: 24px;
  height: 24px;
}

.contact-info .info-item .text h4 {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 6px;
}

.contact-info .info-item .text p {
  font-size: 0.88rem;
  color: var(--color-text-light);
  line-height: 1.6;
}

/* 联系表单 */
.contact-form {
  background: var(--color-white);
  padding: 40px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  border: 1px solid var(--color-border);
}

.contact-form h3 {
  font-size: 1.3rem;
  font-weight: 600;
  margin-bottom: 28px;
  color: var(--color-primary);
}

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

.form-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--color-text);
  margin-bottom: 8px;
}

.form-group label .required {
  color: #d44;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-family: var(--font-sans);
  color: var(--color-text);
  background: var(--color-bg);
  transition: all var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-accent);
  background: var(--color-white);
  box-shadow: 0 0 0 3px rgba(184, 149, 106, 0.1);
}

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

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.form-message {
  padding: 14px 18px;
  border-radius: var(--radius-sm);
  font-size: 0.88rem;
  margin-bottom: 20px;
  display: none;
}

.form-message.success {
  background: #e8f5e9;
  color: #2e7d32;
  display: block;
}

.form-message.error {
  background: #ffebee;
  color: #c62828;
  display: block;
}

/* 地图占位 */
.map-section {
  background: var(--color-bg-alt);
  padding: 60px 0;
}

.map-placeholder {
  height: 400px;
  background: var(--color-bg);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  border: 1px solid var(--color-border);
}

.map-placeholder svg {
  width: 80px;
  height: 80px;
  color: var(--color-accent);
  margin-bottom: 16px;
}

.map-placeholder p {
  color: var(--color-text-light);
  font-size: 0.9rem;
}

.map-placeholder .address {
  font-weight: 600;
  color: var(--color-primary);
  margin-top: 4px;
}

/* ============================================
   页脚
   ============================================ */
.footer {
  background: var(--color-primary);
  color: rgba(255, 255, 255, 0.6);
  padding: 60px 0 24px;
}

.footer-main {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 40px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

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

.footer-brand .footer-logo .logo-text {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--color-white);
}

.footer-brand .footer-logo .logo-text .sub {
  font-size: 0.65rem;
  color: var(--color-accent);
  letter-spacing: 2px;
}

.footer-brand p {
  font-size: 0.85rem;
  line-height: 1.8;
  margin-bottom: 20px;
}

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

.footer-brand .social-links a {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 50%;
  color: rgba(255, 255, 255, 0.6);
  transition: all var(--transition);
}

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

.footer-brand .social-links a svg {
  width: 18px;
  height: 18px;
}

.footer-col h4 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-white);
  margin-bottom: 20px;
}

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

.footer-col ul li a {
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.6);
  transition: color var(--transition);
}

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

.footer-contact .contact-item {
  display: flex;
  gap: 10px;
  margin-bottom: 14px;
  font-size: 0.85rem;
}

.footer-contact .contact-item svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  margin-top: 3px;
  color: var(--color-accent);
}

.footer-bottom {
  padding-top: 24px;
  text-align: center;
  font-size: 0.8rem;
  color: rgba(255, 255, 255, 0.4);
}

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

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

@keyframes scrollDown {
  0% { transform: translateY(0); opacity: 1; }
  50% { transform: translateY(15px); opacity: 0.5; }
  100% { transform: translateY(30px); opacity: 0; }
}

/* 滚动动画 */
.fade-in {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

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

.fade-in-delay-1 { transition-delay: 0.1s; }
.fade-in-delay-2 { transition-delay: 0.2s; }
.fade-in-delay-3 { transition-delay: 0.3s; }

/* ============================================
   响应式
   ============================================ */
@media (max-width: 992px) {
  .hero h1 { font-size: 2.5rem; }
  .product-grid { grid-template-columns: repeat(2, 1fr); }
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .intro, .about-intro, .batch-highlight { grid-template-columns: 1fr; }
  .intro-visual, .about-intro .visual, .batch-highlight .visual { height: 300px; }
  .products-layout { grid-template-columns: 1fr; }
  .process-steps { grid-template-columns: repeat(2, 1fr); }
  .process-step::after { display: none; }
  .values-grid { grid-template-columns: repeat(2, 1fr); }
  .contact-layout { grid-template-columns: 1fr; }
  .footer-main { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .nav-links {
    position: fixed;
    top: var(--header-height);
    left: 0;
    width: 100%;
    background: var(--color-white);
    flex-direction: column;
    padding: 20px 0;
    gap: 0;
    box-shadow: var(--shadow-md);
    transform: translateY(-150%);
    transition: transform var(--transition);
  }

  .nav-links.active {
    transform: translateY(0);
  }

  .nav-links a {
    padding: 14px 24px;
    border-bottom: 1px solid var(--color-border);
  }

  .nav-toggle {
    display: flex;
  }

  .hero h1 { font-size: 2rem; }
  .hero .subtitle { font-size: 0.95rem; }
  .section { padding: 60px 0; }
  .section-header h2 { font-size: 1.6rem; }
  .product-grid { grid-template-columns: 1fr; }
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .intro-stats { grid-template-columns: repeat(3, 1fr); }
  .values-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .footer-main { grid-template-columns: 1fr; }
  .page-hero h1 { font-size: 2rem; }
  .timeline::before { left: 20px; }
  .timeline-item {
    width: 100%;
    left: 0 !important;
    text-align: left !important;
    padding-left: 48px;
    padding-right: 0;
  }
  .timeline-item::before {
    left: 13px !important;
    right: auto !important;
  }
}

@media (max-width: 480px) {
  .hero h1 { font-size: 1.6rem; }
  .hero-buttons { flex-direction: column; align-items: stretch; }
  .features-grid { grid-template-columns: 1fr; }
  .intro-stats { grid-template-columns: repeat(3, 1fr); gap: 12px; }
  .intro-stats .stat-item .num { font-size: 1.3rem; }
  .process-steps { grid-template-columns: 1fr; }
  .contact-form { padding: 24px; }
  .footer-main { gap: 24px; }
}