/* ============================================================
   温州金久丰包装制品有限公司 — 官网样式
   品牌色：紫 #5B21B6 | 粉 #EC4899 | 青 #06B6D4 | 深 #1E1B4B
   ============================================================ */

/* ---------- CSS 变量 ---------- */
:root {
  --c-primary: #5B21B6;
  --c-primary-dark: #4C1D95;
  --c-primary-light: #7C3AED;
  --c-accent-pink: #EC4899;
  --c-accent-cyan: #06B6D4;
  --c-dark: #1E1B4B;
  --c-dark-soft: #312E81;
  --c-white: #FFFFFF;
  --c-off-white: #F5F3FF;
  --c-gray-50: #FAFAFA;
  --c-gray-100: #F3F4F6;
  --c-gray-200: #E5E7EB;
  --c-gray-300: #D1D5DB;
  --c-gray-400: #9CA3AF;
  --c-gray-500: #6B7280;
  --c-gray-600: #4B5563;
  --c-gray-700: #374151;
  --c-gray-800: #1F2937;
  --c-gray-900: #111827;
  --c-success: #10B981;
  --c-warning: #F59E0B;

  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --font-mono: "SF Mono", "Fira Code", "Consolas", monospace;

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  --shadow-sm: 0 1px 2px rgba(0,0,0,.05);
  --shadow-md: 0 4px 6px -1px rgba(0,0,0,.1), 0 2px 4px -2px rgba(0,0,0,.1);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0,.1), 0 4px 6px -4px rgba(0,0,0,.1);
  --shadow-xl: 0 20px 25px -5px rgba(0,0,0,.1), 0 8px 10px -6px rgba(0,0,0,.1);

  --transition-fast: .2s ease;
  --transition-normal: .3s ease;
  --transition-slow: .5s ease;

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

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.7;
  color: var(--c-gray-800);
  background: var(--c-white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

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

a {
  color: inherit;
  text-decoration: none;
}

ul, ol {
  list-style: none;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

input, textarea, select {
  font-family: inherit;
  font-size: inherit;
}

/* ---------- 工具类 ---------- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 80px 0;
}

.section-sm {
  padding: 48px 0;
}

.section-title {
  font-size: 32px;
  font-weight: 700;
  color: var(--c-dark);
  text-align: center;
  margin-bottom: 12px;
  line-height: 1.3;
}

.section-subtitle {
  font-size: 16px;
  color: var(--c-gray-500);
  text-align: center;
  max-width: 640px;
  margin: 0 auto 48px;
  line-height: 1.7;
}

.text-center { text-align: center; }

.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: var(--radius-full);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .3px;
}

.badge-primary {
  background: var(--c-off-white);
  color: var(--c-primary);
}

.badge-pink {
  background: #FDF2F8;
  color: var(--c-accent-pink);
}

.badge-cyan {
  background: #ECFEFF;
  color: var(--c-accent-cyan);
}

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: var(--radius-full);
  font-size: 15px;
  font-weight: 600;
  transition: all var(--transition-fast);
  line-height: 1;
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, var(--c-primary), var(--c-primary-light));
  color: var(--c-white);
  box-shadow: 0 4px 14px rgba(91,33,182,.35);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(91,33,182,.45);
}

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

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

.btn-white {
  background: var(--c-white);
  color: var(--c-primary);
  box-shadow: var(--shadow-md);
}

.btn-white:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-lg {
  padding: 16px 36px;
  font-size: 16px;
}

.btn-sm {
  padding: 8px 18px;
  font-size: 14px;
}

/* ---------- 页头 ---------- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--header-height);
  background: rgba(255,255,255,.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--c-gray-100);
  transition: all var(--transition-fast);
}

.site-header.scrolled {
  box-shadow: var(--shadow-md);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 700;
  color: var(--c-dark);
}

.logo-mark {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, var(--c-primary), var(--c-accent-pink));
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--c-white);
  font-size: 18px;
  font-weight: 800;
  flex-shrink: 0;
}

.logo-text small {
  display: block;
  font-size: 11px;
  font-weight: 400;
  color: var(--c-gray-500);
  letter-spacing: 1px;
}

/* 导航 */
.main-nav {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav-link {
  padding: 8px 16px;
  border-radius: var(--radius-full);
  font-size: 15px;
  font-weight: 500;
  color: var(--c-gray-700);
  transition: all var(--transition-fast);
  position: relative;
}

.nav-link:hover,
.nav-link.active {
  color: var(--c-primary);
  background: var(--c-off-white);
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: 2px;
  left: 50%;
  transform: translateX(-50%);
  width: 20px;
  height: 3px;
  border-radius: var(--radius-full);
  background: linear-gradient(90deg, var(--c-primary), var(--c-accent-pink));
}

.header-cta {
  display: flex;
  align-items: center;
  gap: 12px;
}

.header-phone {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 600;
  color: var(--c-primary);
}

.header-phone svg {
  width: 16px;
  height: 16px;
}

/* 汉堡菜单 */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  cursor: pointer;
}

.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--c-dark);
  border-radius: 2px;
  transition: all var(--transition-fast);
}

.hamburger.open span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}
.hamburger.open span:nth-child(2) {
  opacity: 0;
}
.hamburger.open span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* ---------- 英雄区 ---------- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: var(--header-height);
  overflow: hidden;
  background: linear-gradient(160deg, #1E1B4B 0%, #312E81 40%, #4C1D95 100%);
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 60% 50% at 80% 20%, rgba(236,72,153,.25), transparent),
    radial-gradient(ellipse 50% 60% at 20% 80%, rgba(6,182,212,.2), transparent);
  pointer-events: none;
}

.hero-inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 60px 24px;
  width: 100%;
}

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

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 18px;
  border-radius: var(--radius-full);
  background: rgba(255,255,255,.12);
  border: 1px solid rgba(255,255,255,.2);
  font-size: 14px;
  font-weight: 500;
  margin-bottom: 24px;
  backdrop-filter: blur(8px);
}

.hero-badge .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--c-accent-cyan);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: .5; transform: scale(1.3); }
}

.hero h1 {
  font-size: 48px;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 20px;
  letter-spacing: -0.5px;
}

.hero h1 .gradient-text {
  background: linear-gradient(90deg, var(--c-accent-pink), var(--c-accent-cyan));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-desc {
  font-size: 18px;
  line-height: 1.8;
  color: rgba(255,255,255,.8);
  margin-bottom: 36px;
  max-width: 520px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 48px;
}

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

.stat-item {
  display: flex;
  flex-direction: column;
}

.stat-number {
  font-size: 32px;
  font-weight: 800;
  color: var(--c-white);
  line-height: 1;
}

.stat-number span {
  font-size: 18px;
  color: var(--c-accent-cyan);
}

.stat-label {
  font-size: 13px;
  color: rgba(255,255,255,.6);
  margin-top: 6px;
}

/* 英雄区右侧 — 产品卡片 */
.hero-visual {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero-card {
  width: 100%;
  max-width: 420px;
  background: rgba(255,255,255,.08);
  border: 1px solid rgba(255,255,255,.15);
  border-radius: var(--radius-xl);
  padding: 32px;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}

.hero-card-title {
  font-size: 14px;
  font-weight: 600;
  color: rgba(255,255,255,.6);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 20px;
}

.hero-card-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

.hero-card-item {
  background: rgba(255,255,255,.08);
  border-radius: var(--radius-md);
  padding: 16px;
  text-align: center;
  transition: all var(--transition-fast);
}

.hero-card-item:hover {
  background: rgba(255,255,255,.14);
  transform: translateY(-2px);
}

.hero-card-item .icon {
  font-size: 28px;
  margin-bottom: 8px;
}

.hero-card-item .name {
  font-size: 13px;
  font-weight: 600;
  color: var(--c-white);
}

.hero-card-item .sub {
  font-size: 11px;
  color: rgba(255,255,255,.5);
  margin-top: 2px;
}

/* ---------- 优势区 ---------- */
.features {
  background: var(--c-white);
}

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

.feature-card {
  padding: 32px 24px;
  border-radius: var(--radius-lg);
  background: var(--c-gray-50);
  border: 1px solid var(--c-gray-100);
  transition: all var(--transition-normal);
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
  background: var(--c-white);
}

.feature-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 26px;
  margin-bottom: 20px;
}

.feature-icon.purple { background: var(--c-off-white); }
.feature-icon.pink { background: #FDF2F8; }
.feature-icon.cyan { background: #ECFEFF; }
.feature-icon.green { background: #ECFDF5; }

.feature-card h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--c-dark);
  margin-bottom: 10px;
}

.feature-card p {
  font-size: 14px;
  color: var(--c-gray-500);
  line-height: 1.7;
}

/* ---------- 产品预览区 ---------- */
.products-preview {
  background: var(--c-gray-50);
}

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

/* 6 卡片时改用 3x2，最后一行不空缺 */

.product-card {
  background: var(--c-white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--c-gray-100);
  transition: all var(--transition-normal);
}

.product-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}

.product-card-img {
  position: relative;
  height: 200px;
  background: linear-gradient(135deg, var(--c-off-white), #EDE9FE);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.product-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.product-card-img .placeholder-icon {
  font-size: 48px;
  opacity: .4;
}

.product-card-body {
  padding: 20px;
}

.product-card-body h3 {
  font-size: 17px;
  font-weight: 700;
  color: var(--c-dark);
  margin-bottom: 6px;
}

.product-card-body p {
  font-size: 13px;
  color: var(--c-gray-500);
  line-height: 1.6;
  margin-bottom: 14px;
}

.product-tag {
  display: inline-block;
  padding: 4px 10px;
  border-radius: var(--radius-full);
  font-size: 12px;
  font-weight: 600;
  background: var(--c-off-white);
  color: var(--c-primary);
}

.product-card-link {
  display: inline-block;
  margin-top: 10px;
  font-size: 13px;
  font-weight: 600;
  color: var(--c-primary);
  text-decoration: none;
  transition: color var(--transition-normal);
}

.product-card-link:hover {
  color: var(--c-accent);
}

/* ---------- 关于我们预览 ---------- */
.about-preview {
  background: var(--c-white);
}

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

.about-image {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  min-height: 400px;
  background: linear-gradient(135deg, var(--c-off-white), #EDE9FE);
  display: flex;
  align-items: center;
  justify-content: center;
}

.about-image > img {
  width: 100%;
  height: 100%;
  min-height: 400px;
  object-fit: cover;
  display: block;
}

.about-image .placeholder {
  text-align: center;
  color: var(--c-gray-400);
  padding: 40px;
}

.about-image .placeholder-icon {
  font-size: 64px;
  margin-bottom: 12px;
  opacity: .5;
}

.about-image .placeholder-text {
  font-size: 14px;
}

.about-experience {
  position: absolute;
  bottom: 20px;
  right: 20px;
  background: linear-gradient(135deg, var(--c-primary), var(--c-accent-pink));
  color: var(--c-white);
  padding: 16px 24px;
  border-radius: var(--radius-lg);
  text-align: center;
  box-shadow: var(--shadow-lg);
}

.about-experience .num {
  font-size: 36px;
  font-weight: 800;
  line-height: 1;
}

.about-experience .label {
  font-size: 12px;
  opacity: .85;
  margin-top: 4px;
}

.about-content .badge {
  margin-bottom: 16px;
}

.about-content h2 {
  font-size: 32px;
  font-weight: 700;
  color: var(--c-dark);
  margin-bottom: 16px;
  line-height: 1.3;
}

.about-content > p {
  font-size: 15px;
  color: var(--c-gray-600);
  line-height: 1.8;
  margin-bottom: 28px;
}

.about-checklist {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-bottom: 32px;
}

.about-checklist li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  font-weight: 500;
  color: var(--c-gray-700);
}

.about-checklist li .check {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--c-success);
  color: var(--c-white);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  flex-shrink: 0;
}

/* ---------- 数据展示 ---------- */
.stats-section {
  background: linear-gradient(160deg, #1E1B4B, #312E81);
  padding: 60px 0;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
}

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

.stat-box .number {
  font-size: 42px;
  font-weight: 800;
  line-height: 1;
  margin-bottom: 8px;
}

.stat-box .number span {
  font-size: 24px;
  color: var(--c-accent-cyan);
}

.stat-box .label {
  font-size: 14px;
  color: rgba(255,255,255,.6);
}

/* ---------- 客户/品牌区 ---------- */
.clients-section {
  background: var(--c-white);
}

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

.client-card {
  padding: 28px 20px;
  border-radius: var(--radius-md);
  background: var(--c-gray-50);
  border: 1px solid var(--c-gray-100);
  text-align: center;
  transition: all var(--transition-fast);
}

.client-card:hover {
  background: var(--c-white);
  border-color: var(--c-gray-200);
  box-shadow: var(--shadow-md);
}

.client-card .icon {
  font-size: 32px;
  margin-bottom: 10px;
  opacity: .6;
}

.client-card .name {
  font-size: 14px;
  font-weight: 600;
  color: var(--c-gray-700);
}

/* ---------- CTA 区 ---------- */
.cta-section {
  background: linear-gradient(135deg, var(--c-primary), var(--c-primary-light));
  padding: 80px 0;
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 40% 60% at 90% 10%, rgba(255,255,255,.1), transparent),
    radial-gradient(ellipse 30% 50% at 10% 90%, rgba(236,72,153,.3), transparent);
}

.cta-inner {
  position: relative;
  z-index: 1;
  text-align: center;
  color: var(--c-white);
}

.cta-inner h2 {
  font-size: 36px;
  font-weight: 800;
  margin-bottom: 16px;
  line-height: 1.3;
}

.cta-inner p {
  font-size: 17px;
  color: rgba(255,255,255,.8);
  max-width: 560px;
  margin: 0 auto 32px;
  line-height: 1.7;
}

.cta-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ---------- 页脚 ---------- */
.site-footer {
  background: var(--c-dark);
  color: rgba(255,255,255,.7);
  padding: 64px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 48px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255,255,255,.1);
}

.footer-brand .logo {
  color: var(--c-white);
  margin-bottom: 16px;
}

.footer-brand p {
  font-size: 14px;
  line-height: 1.8;
  color: rgba(255,255,255,.5);
  margin-bottom: 20px;
}

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

.footer-social a {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  background: rgba(255,255,255,.1);
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255,255,255,.7);
  font-size: 14px;
  transition: all var(--transition-fast);
}

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

.footer-col h4 {
  font-size: 15px;
  font-weight: 700;
  color: var(--c-white);
  margin-bottom: 18px;
}

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

.footer-col ul li a {
  font-size: 14px;
  color: rgba(255,255,255,.5);
  transition: color var(--transition-fast);
}

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

.footer-contact li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 14px;
  color: rgba(255,255,255,.5);
  margin-bottom: 14px;
}

.footer-contact li .icon {
  flex-shrink: 0;
  margin-top: 2px;
  color: var(--c-accent-cyan);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 24px 0;
  font-size: 13px;
  color: rgba(255,255,255,.35);
  flex-wrap: wrap;
  gap: 12px;
}

.footer-bottom a {
  color: rgba(255,255,255,.5);
}

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

/* ---------- 面包屑 ---------- */
.breadcrumb-bar {
  padding: calc(var(--header-height) + 40px) 0 40px;
  background: linear-gradient(160deg, #1E1B4B, #312E81);
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: rgba(255,255,255,.5);
}

.breadcrumb a {
  color: rgba(255,255,255,.7);
  transition: color var(--transition-fast);
}

.breadcrumb a:hover {
  color: var(--c-white);
}

.breadcrumb .separator {
  opacity: .4;
}

/* ---------- 产品列表页 ---------- */
.page-header {
  background: linear-gradient(160deg, #1E1B4B, #312E81);
  padding: calc(var(--header-height) + 60px) 0 60px;
  color: var(--c-white);
}

.page-header h1 {
  font-size: 40px;
  font-weight: 800;
  margin-bottom: 12px;
}

.page-header p {
  font-size: 16px;
  color: rgba(255,255,255,.7);
  max-width: 600px;
  line-height: 1.7;
}

.category-filter {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 40px;
}

.filter-btn {
  padding: 10px 22px;
  border-radius: var(--radius-full);
  font-size: 14px;
  font-weight: 600;
  color: var(--c-gray-600);
  background: var(--c-gray-100);
  transition: all var(--transition-fast);
  border: 1px solid transparent;
}

.filter-btn:hover {
  background: var(--c-gray-200);
}

.filter-btn.active {
  background: var(--c-primary);
  color: var(--c-white);
  box-shadow: 0 4px 12px rgba(91,33,182,.3);
}

.product-list-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.product-item {
  background: var(--c-white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--c-gray-100);
  transition: all var(--transition-normal);
}

.product-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.product-item-img {
  height: 180px;
  background: linear-gradient(135deg, var(--c-off-white), #EDE9FE);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.product-item-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.product-item-img .placeholder-icon {
  font-size: 42px;
  opacity: .4;
}

.product-item-body {
  padding: 18px;
}

.product-item-body .category-label {
  font-size: 12px;
  font-weight: 600;
  color: var(--c-primary);
  text-transform: uppercase;
  letter-spacing: .5px;
  margin-bottom: 6px;
}

.product-item-body h3 {
  font-size: 16px;
  font-weight: 700;
  color: var(--c-dark);
  margin-bottom: 8px;
}

.product-item-body p {
  font-size: 13px;
  color: var(--c-gray-500);
  line-height: 1.6;
  margin-bottom: 14px;
}

.product-item-body .actions {
  display: flex;
  gap: 10px;
}

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

.timeline {
  position: relative;
  padding-left: 32px;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 8px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--c-gray-200);
}

.timeline-item {
  position: relative;
  padding-bottom: 36px;
}

.timeline-item:last-child {
  padding-bottom: 0;
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: -28px;
  top: 6px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--c-primary);
  border: 3px solid var(--c-off-white);
}

.timeline-item .year {
  font-size: 14px;
  font-weight: 700;
  color: var(--c-primary);
  margin-bottom: 4px;
}

.timeline-item h4 {
  font-size: 16px;
  font-weight: 700;
  color: var(--c-dark);
  margin-bottom: 6px;
}

.timeline-item p {
  font-size: 14px;
  color: var(--c-gray-500);
  line-height: 1.7;
}

/* 资质卡片 */
.certs-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.cert-card {
  padding: 24px;
  border-radius: var(--radius-lg);
  background: var(--c-gray-50);
  border: 1px solid var(--c-gray-100);
  text-align: center;
  transition: all var(--transition-fast);
}

.cert-card:hover {
  background: var(--c-white);
  border-color: var(--c-gray-200);
  box-shadow: var(--shadow-md);
}

.cert-card .icon {
  font-size: 36px;
  margin-bottom: 12px;
}

.cert-card h4 {
  font-size: 15px;
  font-weight: 700;
  color: var(--c-dark);
  margin-bottom: 6px;
}

.cert-card p {
  font-size: 13px;
  color: var(--c-gray-500);
}

/* ---------- 联系我们页 ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 48px;
  align-items: start;
}

.contact-info-card {
  background: var(--c-gray-50);
  border-radius: var(--radius-lg);
  padding: 32px;
  border: 1px solid var(--c-gray-100);
}

.contact-info-item {
  display: flex;
  gap: 16px;
  margin-bottom: 24px;
}

.contact-info-item:last-child {
  margin-bottom: 0;
}

.contact-info-item .icon-wrap {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background: var(--c-off-white);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  flex-shrink: 0;
}

.contact-info-item .info h4 {
  font-size: 14px;
  font-weight: 700;
  color: var(--c-dark);
  margin-bottom: 4px;
}

.contact-info-item .info p {
  font-size: 14px;
  color: var(--c-gray-500);
  line-height: 1.6;
}

.contact-form-card {
  background: var(--c-white);
  border-radius: var(--radius-lg);
  padding: 36px;
  border: 1px solid var(--c-gray-100);
  box-shadow: var(--shadow-md);
}

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

.form-group label {
  display: block;
  font-size: 14px;
  font-weight: 600;
  color: var(--c-gray-700);
  margin-bottom: 8px;
}

.form-group label .required {
  color: var(--c-accent-pink);
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1.5px solid var(--c-gray-200);
  border-radius: var(--radius-md);
  font-size: 15px;
  color: var(--c-gray-800);
  background: var(--c-white);
  transition: border-color var(--transition-fast);
  outline: none;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  border-color: var(--c-primary);
  box-shadow: 0 0 0 3px rgba(91,33,182,.1);
}

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

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

.form-hint {
  font-size: 12px;
  color: var(--c-gray-400);
  margin-top: 6px;
}

/* 地图 */
.map-section {
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-top: 48px;
  border: 1px solid var(--c-gray-100);
}

.map-embed {
  width: 100%;
  height: auto;
  display: block;
  border: 0;
  background: var(--c-gray-100);
}

.map-img-wrap {
  position: relative;
}

.map-open-btn {
  position: absolute;
  top: 14px;
  right: 14px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  background: rgba(30, 27, 75, .88);
  color: #fff;
  font-size: 13px;
  font-weight: 600;
  border-radius: 999px;
  text-decoration: none;
  box-shadow: 0 2px 8px rgba(0, 0, 0, .18);
  transition: background .2s, transform .2s;
}

.map-open-btn:hover {
  background: var(--c-primary);
  transform: translateY(-1px);
}

.map-footer .map-copy-hint {
  font-size: 12px;
  color: var(--c-gray-400);
}

.map-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 20px;
  background: var(--c-gray-50);
  border-top: 1px solid var(--c-gray-100);
  font-size: 14px;
  color: var(--c-gray-500);
}

.map-footer .map-link {
  color: var(--c-primary);
  font-weight: 600;
  white-space: nowrap;
  text-decoration: none;
}

.map-footer .map-link:hover {
  text-decoration: underline;
}

.jjf-marker-pin {
  font-size: 34px;
  line-height: 1;
  filter: drop-shadow(0 2px 4px rgba(0, 0, 0, .3));
  animation: jjf-bounce 1.6s ease-in-out infinite;
}

@keyframes jjf-bounce {
  0%, 100% { transform: translateY(0); }
  50%      { transform: translateY(-8px); }
}

.map-placeholder {
  width: 100%;
  height: 400px;
  background: linear-gradient(135deg, var(--c-gray-100), var(--c-gray-200));
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 12px;
  color: var(--c-gray-400);
}

.map-placeholder .icon {
  font-size: 48px;
}

/* ---------- 浮动返回顶部 ---------- */
.back-to-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--c-primary);
  color: var(--c-white);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: all var(--transition-fast);
  z-index: 999;
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  background: var(--c-primary-dark);
}

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

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

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

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

  .hero-visual {
    display: none;
  }

  .hero h1 {
    font-size: 38px;
  }

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

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

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

  .about-grid,
  .about-hero {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .about-image {
    min-height: 300px;
  }

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
  }

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

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

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

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

@media (max-width: 768px) {
  :root {
    --header-height: 64px;
  }

  .section {
    padding: 56px 0;
  }

  .section-title {
    font-size: 26px;
  }

  .main-nav {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: var(--c-white);
    flex-direction: column;
    padding: 16px 24px;
    gap: 8px;
    border-bottom: 1px solid var(--c-gray-100);
    box-shadow: var(--shadow-lg);
    transform: translateY(-120%);
    transition: transform var(--transition-normal);
    z-index: 999;
  }

  .main-nav.open {
    transform: translateY(0);
  }

  .nav-link {
    width: 100%;
    text-align: center;
    padding: 12px;
  }

  .header-cta {
    display: none;
  }

  .hamburger {
    display: flex;
  }

  .hero h1 {
    font-size: 30px;
  }

  .hero-desc {
    font-size: 16px;
  }

  .hero-stats {
    gap: 24px;
  }

  .stat-number {
    font-size: 26px;
  }

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

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

  .product-list-grid {
    grid-template-columns: 1fr;
  }

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

  .stat-box .number {
    font-size: 32px;
  }

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

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

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

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

  .cta-inner h2 {
    font-size: 28px;
  }

  .page-header h1 {
    font-size: 30px;
  }
}

@media (max-width: 480px) {
  .hero h1 {
    font-size: 26px;
  }

  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .btn {
    width: 100%;
  }

  .cta-actions {
    flex-direction: column;
    align-items: stretch;
  }

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

/* ---------- 动画 ---------- */
.fade-in-up {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity .6s ease, transform .6s ease;
}

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

/* ---------- 打印 ---------- */
@media print {
  .site-header,
  .site-footer,
  .back-to-top,
  .cta-section {
    display: none !important;
  }

  .hero {
    min-height: auto;
    padding: 40px 0;
  }
}