/* ============================================================
   企废通 (QiFeiTong) — 前台深度样式
   版本: 2.0
   品牌色: 深蓝 #0F4C81 | 翠绿 #2E8B57 | 灰白 #F5F7FA
   ============================================================ */

/* ============================================
   0. CSS 自定义属性
   ============================================ */
:root {
  /* 色彩 */
  --color-primary: #0f4c81;
  --color-primary-dark: #0a3d6b;
  --color-primary-light: #1a6bb5;
  --color-accent: #2e8b57;
  --color-accent-dark: #1e6b42;
  --color-accent-light: #3a9d64;
  --color-bg: #f5f7fa;
  --color-bg-alt: #f0f4f8;
  --color-white: #ffffff;
  --color-text-heading: #2c3e50;
  --color-text-body: #4a5568;
  --color-text-muted: #8899a6;
  --color-text-light: #a0aec0;
  --color-border: #e2e8f0;
  --color-border-light: #edf2f7;
  --color-danger: #e53e3e;
  --color-warning: #d69e2e;
  --color-success: #38a169;
  --color-faq-bg: #fafbfc;

  /* 字体 */
  --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Helvetica, Arial, sans-serif;

  /* 圆角 */
  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 8px;
  --radius-xl: 12px;
  --radius-full: 50%;

  /* 阴影 */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 2px 8px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 8px 25px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 12px 40px rgba(15, 76, 129, 0.12);

  /* 过渡 */
  --transition-fast: 0.2s ease;
  --transition-base: 0.3s ease;
  --transition-slow: 0.4s ease;

  /* 布局 */
  --container-max: 1200px;
  --header-height: 64px;
}

/* ============================================
   1. 全局重置与基础
   ============================================ */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  color: var(--color-text-body);
  line-height: 1.7;
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}
a:hover {
  color: var(--color-accent);
  text-decoration: underline;
}

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

ul,
ol {
  list-style: none;
}

.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 20px;
}

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

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes pulse {
  0%,
  100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.05);
  }
}

.animate-fade-in-up {
  animation: fadeInUp 0.6s ease forwards;
}

.animate-fade-in {
  animation: fadeIn 0.5s ease forwards;
}

/* ============================================
   3. 导航栏
   ============================================ */
.site-header {
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 1000;
  height: var(--header-height);
}

.site-header.scrolled {
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.08);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-height);
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  text-decoration: none;
  flex-shrink: 0;
}
.logo:hover {
  text-decoration: none;
}

.logo-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
  color: #fff;
  border-radius: var(--radius-lg);
  font-size: 18px;
  font-weight: 700;
  box-shadow: 0 2px 6px rgba(15, 76, 129, 0.25);
}

.logo-text {
  font-size: 22px;
  color: var(--color-primary);
  letter-spacing: 1px;
}

/* 主导航 */
.main-nav ul {
  display: flex;
  gap: 2px;
}

.main-nav ul li a {
  display: block;
  padding: 10px 18px;
  border-radius: var(--radius-md);
  font-size: 15px;
  color: var(--color-text-body);
  font-weight: 500;
  text-decoration: none;
  position: relative;
  transition:
    color var(--transition-fast),
    background var(--transition-fast);
}
.main-nav ul li a:hover {
  background: var(--color-bg);
  color: var(--color-primary);
  text-decoration: none;
}

/* 当前页高亮 — 底部指示条 */
.main-nav ul li.active a {
  background: transparent;
  color: var(--color-primary);
  font-weight: 600;
}
.main-nav ul li.active a::after {
  content: '';
  position: absolute;
  bottom: 2px;
  left: 18px;
  right: 18px;
  height: 3px;
  background: var(--color-primary);
  border-radius: 2px;
}

/* 汉堡按钮 */
.mobile-menu-btn {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  z-index: 1001;
}
.mobile-menu-btn span {
  display: block;
  width: 24px;
  height: 2.5px;
  background: var(--color-text-heading);
  border-radius: 2px;
  transition: all var(--transition-base);
  transform-origin: center;
}
.mobile-menu-btn.active span:nth-child(1) {
  transform: translateY(7.5px) rotate(45deg);
}
.mobile-menu-btn.active span:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}
.mobile-menu-btn.active span:nth-child(3) {
  transform: translateY(-7.5px) rotate(-45deg);
}

/* ============================================
   4. 英雄区 (Hero)
   ============================================ */
.hero {
  background: linear-gradient(135deg, #0f4c81 0%, #1a6bb5 50%, #2e8b57 100%);
  position: relative;
  color: #fff;
  text-align: center;
  padding: 80px 20px 100px;
  overflow: hidden;
  min-height: 420px;
  display: flex;
  align-items: center;
}

/* 背景装饰 — 网格点阵 */
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle at 25% 40%, rgba(255, 255, 255, 0.05) 1px, transparent 1px),
    radial-gradient(circle at 75% 60%, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
  background-size:
    40px 40px,
    30px 30px;
  pointer-events: none;
}

/* 装饰：大圆形光晕 */
.hero::after {
  content: '';
  position: absolute;
  top: -150px;
  right: -150px;
  width: 500px;
  height: 500px;
  border-radius: var(--radius-full);
  background: radial-gradient(circle, rgba(46, 139, 87, 0.15), transparent 70%);
  pointer-events: none;
}

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

.hero-content {
  animation: fadeInUp 0.7s ease forwards;
}

.hero h1 {
  font-size: clamp(2rem, 5vw, 3.2rem);
  font-weight: 800;
  margin-bottom: 16px;
  letter-spacing: 3px;
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.15);
}

.hero-subtitle {
  font-size: clamp(1.1rem, 2.5vw, 1.5rem);
  font-weight: 600;
  margin-bottom: 14px;
  opacity: 0.95;
  letter-spacing: 4px;
}

.hero-desc {
  font-size: 1.05rem;
  max-width: 620px;
  margin: 0 auto 38px;
  opacity: 0.85;
  line-height: 1.8;
}

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

/* ============================================
   5. 按钮系统
   ============================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 28px;
  border-radius: var(--radius-md);
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  border: 2px solid transparent;
  transition: all var(--transition-base);
  text-align: center;
  text-decoration: none;
  line-height: 1.4;
  gap: 6px;
}
.btn:hover {
  text-decoration: none;
}

.btn-primary {
  background: var(--color-accent);
  color: var(--color-white);
  border-color: var(--color-accent);
  box-shadow: 0 2px 6px rgba(46, 139, 87, 0.25);
}
.btn-primary:hover {
  background: var(--color-accent-dark);
  border-color: var(--color-accent-dark);
  color: var(--color-white);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(46, 139, 87, 0.35);
}

.btn-primary:active {
  transform: translateY(0);
  box-shadow: 0 2px 8px rgba(46, 139, 87, 0.25);
}

.btn-outline {
  background: transparent;
  color: var(--color-white);
  border-color: rgba(255, 255, 255, 0.6);
}
.btn-outline:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: var(--color-white);
  color: var(--color-white);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(255, 255, 255, 0.1);
}

.btn-lg {
  padding: 14px 40px;
  font-size: 17px;
  border-radius: var(--radius-lg);
}

.btn-sm {
  padding: 8px 16px;
  font-size: 13px;
  border-radius: var(--radius-sm);
}

/* ============================================
   6. 区块通用
   ============================================ */
.section {
  padding: 64px 0;
}

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

.section-header {
  text-align: center;
  margin-bottom: 44px;
}

.section-header h2 {
  font-size: 1.8rem;
  color: var(--color-primary);
  margin-bottom: 10px;
  font-weight: 700;
}

.section-header p {
  color: var(--color-text-muted);
  font-size: 1.05rem;
}

/* ============================================
   7. 页面横幅 (Page Banner)
   ============================================ */
.page-banner {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
  color: var(--color-white);
  text-align: center;
  padding: 56px 20px 60px;
  position: relative;
  overflow: hidden;
}

.page-banner::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle at 80% 30%, rgba(255, 255, 255, 0.06) 0, transparent 50%);
  pointer-events: none;
}

.page-banner-sm {
  padding: 32px 20px 36px;
}

.page-banner h1 {
  font-size: clamp(1.5rem, 3.5vw, 2.2rem);
  margin-bottom: 8px;
  font-weight: 700;
  position: relative;
}

.page-banner p {
  opacity: 0.85;
  font-size: 1.05rem;
  position: relative;
}

.page-banner .breadcrumb {
  margin-bottom: 12px;
  font-size: 0.88rem;
  opacity: 0.75;
  position: relative;
}
.page-banner .breadcrumb a {
  color: rgba(255, 255, 255, 0.85);
  text-decoration: none;
}
.page-banner .breadcrumb a:hover {
  color: #fff;
  text-decoration: underline;
}
.page-banner .breadcrumb span {
  color: rgba(255, 255, 255, 0.95);
}

/* ============================================
   8. 筛选标签 (Filter Tabs)
   ============================================ */
.filter-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 32px;
}

.filter-tabs .tag {
  padding: 8px 22px;
  border-radius: 20px;
  font-size: 0.9rem;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  color: var(--color-text-body);
  cursor: pointer;
  transition: all var(--transition-fast);
  text-decoration: none;
}
.filter-tabs .tag:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  text-decoration: none;
  box-shadow: 0 2px 8px rgba(15, 76, 129, 0.08);
}
.filter-tabs .tag.active {
  background: var(--color-primary);
  color: var(--color-white);
  border-color: var(--color-primary);
  box-shadow: 0 2px 8px rgba(15, 76, 129, 0.2);
}

/* ============================================
   9. 卡片系统
   ============================================ */

/* -- 分类卡片 -- */
.category-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 24px;
}

.category-card {
  background: var(--color-white);
  border-radius: var(--radius-xl);
  padding: 36px 24px;
  text-align: center;
  border: 1px solid var(--color-border-light);
  transition: all var(--transition-base);
  text-decoration: none;
  display: block;
  box-shadow: var(--shadow-sm);
}
.category-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-xl);
  border-color: var(--color-primary);
  text-decoration: none;
}

.category-icon {
  font-size: 2.8rem;
  margin-bottom: 14px;
  display: block;
}

.category-card h3 {
  font-size: 1.15rem;
  color: var(--color-primary);
  margin-bottom: 8px;
  font-weight: 600;
}

.category-card p {
  color: var(--color-text-muted);
  font-size: 0.9rem;
  line-height: 1.5;
}

/* -- 物资卡片 (Material Grid) -- */
.material-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 24px;
}

.material-card {
  background: var(--color-white);
  border-radius: var(--radius-xl);
  padding: 28px;
  border: 1px solid var(--color-border-light);
  transition: all var(--transition-base);
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-sm);
  text-decoration: none;
}
.material-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-primary);
  text-decoration: none;
}

.material-card h3 {
  font-size: 1.15rem;
  color: var(--color-primary);
  margin-bottom: 10px;
  font-weight: 600;
}

.material-card .summary {
  color: var(--color-text-muted);
  font-size: 0.9rem;
  line-height: 1.7;
  flex: 1;
  margin-bottom: 16px;
}

.card-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.label {
  display: inline-block;
  background: #e8f4ff;
  color: var(--color-primary);
  padding: 4px 12px;
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
  font-weight: 500;
}

.price-tag {
  background: #e8f8ef !important;
  color: var(--color-accent) !important;
}

.tag {
  display: inline-block;
  background: var(--color-bg);
  color: var(--color-text-muted);
  padding: 3px 10px;
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
}

/* -- 回收商卡片 -- */
.recycler-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 24px;
}

.recycler-card {
  background: var(--color-white);
  border-radius: var(--radius-xl);
  border: 1px solid var(--color-border-light);
  display: flex;
  gap: 16px;
  padding: 20px;
  transition: all var(--transition-base);
  text-decoration: none;
  box-shadow: var(--shadow-sm);
}
.recycler-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-primary);
  text-decoration: none;
}

.recycler-logo {
  flex-shrink: 0;
  width: 64px;
  height: 64px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--color-bg);
}
.recycler-logo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.logo-placeholder {
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  font-weight: 700;
}

.recycler-info {
  flex: 1;
  min-width: 0;
}
.recycler-info h3 {
  font-size: 1.05rem;
  color: var(--color-primary);
  margin-bottom: 6px;
  font-weight: 600;
}
.recycler-area {
  font-size: 0.88rem;
  color: var(--color-text-light);
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 4px;
}
.recycler-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
}

/* -- 文章列表 -- */
.article-list {
  max-width: 800px;
  margin: 0 auto;
}

.article-item {
  background: var(--color-white);
  border-radius: var(--radius-xl);
  padding: 28px 32px;
  margin-bottom: 20px;
  border: 1px solid var(--color-border-light);
  transition: all var(--transition-base);
  box-shadow: var(--shadow-sm);
}
.article-item:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--color-border);
}

.article-item h2 {
  font-size: 1.25rem;
  margin-bottom: 10px;
}
.article-item h2 a {
  color: var(--color-text-heading);
  text-decoration: none;
  transition: color var(--transition-fast);
}
.article-item h2 a:hover {
  color: var(--color-primary);
}

.article-meta {
  display: flex;
  gap: 16px;
  align-items: center;
  margin-bottom: 12px;
  font-size: 0.88rem;
  color: var(--color-text-light);
}

.article-category {
  background: #e8f4ff;
  color: var(--color-primary);
  padding: 2px 10px;
  border-radius: var(--radius-sm);
  font-size: 0.82rem;
  font-weight: 500;
}

.article-date {
  color: var(--color-text-light);
  font-size: 0.85rem;
}

.article-summary {
  color: var(--color-text-muted);
  font-size: 0.95rem;
  line-height: 1.7;
  margin-bottom: 12px;
}

.read-more {
  color: var(--color-primary);
  font-weight: 500;
  font-size: 0.9rem;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: gap var(--transition-fast);
}
.read-more:hover {
  gap: 8px;
  text-decoration: none;
}

/* -- 回收商详情顶部 -- */
.detail-header {
  display: flex;
  gap: 30px;
  align-items: flex-start;
  margin-bottom: 36px;
  padding: 28px 32px;
  background: var(--color-white);
  border-radius: var(--radius-xl);
  border: 1px solid var(--color-border-light);
  box-shadow: var(--shadow-sm);
}

.detail-logo {
  flex-shrink: 0;
  width: 100px;
  height: 100px;
  border-radius: var(--radius-xl);
  overflow: hidden;
  background: var(--color-bg);
}
.detail-logo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.logo-lg {
  font-size: 2.4rem !important;
}

.detail-info {
  flex: 1;
}
.detail-info h1 {
  font-size: 1.6rem;
  color: var(--color-primary);
  margin-bottom: 12px;
  font-weight: 700;
}
.detail-meta {
  color: var(--color-text-muted);
  font-size: 0.95rem;
  margin-bottom: 10px;
}
.detail-tags {
  margin-bottom: 12px;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.detail-contact {
  margin-bottom: 16px;
  font-size: 1.05rem;
  color: var(--color-text-heading);
}
.detail-contact strong {
  color: var(--color-primary);
}

/* 资质图片网格 */
.qualification-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 16px;
}
.qual-item {
  background: var(--color-bg);
  border-radius: var(--radius-lg);
  padding: 12px;
  text-align: center;
  border: 1px solid var(--color-border-light);
  transition: all var(--transition-fast);
}
.qual-item:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-sm);
}
.qual-item img {
  max-height: 120px;
  object-fit: contain;
  margin: 0 auto 8px;
}
.qual-item p {
  font-size: 0.88rem;
  color: var(--color-text-muted);
}

/* ============================================
   10. 三列信息区 (首页)
   ============================================ */
.info-columns {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
}

.info-col {
  background: var(--color-white);
  border-radius: var(--radius-xl);
  padding: 28px;
  border: 1px solid var(--color-border-light);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-base);
}
.info-col:hover {
  box-shadow: var(--shadow-md);
}

.info-col h3 {
  font-size: 1.15rem;
  color: var(--color-primary);
  margin-bottom: 18px;
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--color-bg);
}

.news-list li,
.price-list li {
  padding: 10px 0;
  border-bottom: 1px solid var(--color-border-light);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 6px;
}
.news-list li:last-child,
.price-list li:last-child {
  border-bottom: none;
}

.news-list li a {
  color: var(--color-text-body);
  font-size: 0.95rem;
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.news-list li a:hover {
  color: var(--color-primary);
}

.date {
  color: var(--color-text-light);
  font-size: 0.85rem;
  white-space: nowrap;
}

.price-name {
  font-weight: 600;
  color: var(--color-text-heading);
  flex: 1;
}

.price-range {
  color: var(--color-accent);
  font-weight: 700;
  font-size: 0.95rem;
}

.more-link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  margin-top: 14px;
  color: var(--color-primary);
  font-weight: 500;
  font-size: 0.9rem;
  transition: gap var(--transition-fast);
}
.more-link:hover {
  gap: 8px;
  text-decoration: none;
}

/* ============================================
   11. 信任区
   ============================================ */
.trust-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  text-align: center;
}

.trust-item {
  padding: 28px 16px;
  position: relative;
}
.trust-item + .trust-item::before {
  content: '';
  position: absolute;
  left: 0;
  top: 15%;
  height: 70%;
  width: 1px;
  background: var(--color-border-light);
}

.trust-number {
  font-size: 2.6rem;
  font-weight: 800;
  color: var(--color-primary);
  margin-bottom: 6px;
  line-height: 1.2;
}

.trust-item p {
  color: var(--color-text-muted);
  font-size: 0.95rem;
}

/* ============================================
   12. 详情页面 (物资百科)
   ============================================ */
.detail-container,
.recycler-detail,
.article-detail,
.about-content {
  max-width: 900px;
  margin: 0 auto;
}

.detail-block {
  margin-bottom: 44px;
}

.detail-block h2 {
  font-size: 1.5rem;
  color: var(--color-primary);
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--color-border);
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 10px;
}

/* -- 步骤时间轴 -- */
.steps-list {
  counter-reset: step;
  position: relative;
}
.steps-list::before {
  content: '';
  position: absolute;
  left: 21px;
  top: 10px;
  bottom: 10px;
  width: 2px;
  background: var(--color-border);
  border-radius: 1px;
}

.step-item {
  display: flex;
  gap: 20px;
  margin-bottom: 20px;
  padding: 24px;
  background: var(--color-white);
  border-radius: var(--radius-xl);
  border: 1px solid var(--color-border-light);
  position: relative;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-base);
}
.step-item:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--color-border);
}

.step-num {
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-full);
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  font-weight: 700;
  position: relative;
  z-index: 1;
  box-shadow: 0 2px 8px rgba(15, 76, 129, 0.25);
}

.step-body {
  flex: 1;
  padding-top: 4px;
}
.step-body h3 {
  font-size: 1.1rem;
  margin-bottom: 6px;
  color: var(--color-text-heading);
  font-weight: 600;
}
.step-body p {
  color: var(--color-text-muted);
  line-height: 1.7;
}

/* -- 资质要求 -- */
.requirement-list {
  list-style: none;
}

.requirement-list li {
  padding: 14px 18px;
  background: var(--color-faq-bg);
  border-radius: var(--radius-lg);
  margin-bottom: 10px;
  font-size: 0.95rem;
  color: var(--color-text-body);
  display: flex;
  align-items: flex-start;
  gap: 10px;
  border-left: 3px solid var(--color-accent);
  transition: all var(--transition-fast);
}
.requirement-list li:hover {
  background: #f0faf4;
}
.requirement-list li::before {
  content: '✓';
  color: var(--color-accent);
  font-weight: 700;
  flex-shrink: 0;
  margin-top: 2px;
}

/* -- 价格影响因素表格 -- */
.table-wrapper {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border-light);
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
}

.data-table thead {
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  overflow: hidden;
}

.data-table th {
  background: var(--color-primary);
  color: #fff;
  padding: 14px 18px;
  text-align: left;
  font-weight: 600;
  font-size: 0.9rem;
  letter-spacing: 1px;
}

.data-table td {
  padding: 14px 18px;
  border-bottom: 1px solid var(--color-border);
  color: var(--color-text-body);
}

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

.data-table tbody tr:hover td {
  background: #edf2f9;
}

.data-table tbody tr:nth-child(even) td {
  background: var(--color-faq-bg);
}
.data-table tbody tr:nth-child(even):hover td {
  background: #edf2f9;
}

/* -- 行情表格特殊样式 -- */
.price-table .price-cell {
  color: var(--color-accent);
  font-weight: 700;
  font-size: 1rem;
}

.price-table .date-cell {
  color: var(--color-text-light);
  font-size: 0.88rem;
}

.price-table .empty-cell {
  text-align: center;
  color: var(--color-text-light);
  padding: 50px 20px;
  font-size: 1rem;
}

.price-disclaimer {
  margin-top: 20px;
  padding: 14px 20px;
  background: #fff8e1;
  border-radius: var(--radius-lg);
  font-size: 0.88rem;
  color: #856404;
  border: 1px solid #ffeaa7;
  line-height: 1.6;
}

/* -- 行情参考卡片 (B6) -- */
.price-ref-box {
  padding: 28px 32px;
  background: linear-gradient(135deg, #e8f8ef, #f0faf4);
  border-radius: var(--radius-lg);
  border-left: 4px solid var(--color-accent);
  font-size: 1.05rem;
  color: var(--color-accent-dark);
  line-height: 1.8;
  box-shadow: 0 2px 8px rgba(46, 139, 87, 0.08);
}
.price-ref-box strong {
  color: var(--color-primary);
  font-size: 1.3rem;
}

/* -- CTA 区块 -- */
.cta-block {
  text-align: center;
  padding: 40px 24px;
  background: linear-gradient(135deg, var(--color-bg), var(--color-bg-alt));
  border-radius: var(--radius-xl);
  margin-bottom: 40px;
  border: 1px solid var(--color-border-light);
}

.cta-block p {
  font-size: 1.15rem;
  margin-bottom: 20px;
  color: var(--color-primary);
  font-weight: 600;
}

.cta-actions {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
}

.cta-block .btn-primary {
  background: var(--color-primary);
  border-color: var(--color-primary);
  box-shadow: 0 4px 12px rgba(15, 76, 129, 0.25);
}
.cta-block .btn-primary:hover {
  background: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
  box-shadow: 0 6px 20px rgba(15, 76, 129, 0.35);
}

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

/* -- FAQ 手风琴 -- */
.faq-item {
  margin-bottom: 10px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition-fast);
}
.faq-item:hover {
  border-color: var(--color-primary);
  box-shadow: 0 2px 8px rgba(15, 76, 129, 0.06);
}

.faq-question {
  width: 100%;
  padding: 16px 20px;
  background: var(--color-white);
  border: none;
  text-align: left;
  font-size: 1rem;
  color: var(--color-text-heading);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-weight: 600;
  transition: background var(--transition-fast);
}
.faq-question:hover {
  background: var(--color-bg);
}

.faq-icon {
  font-size: 1.3rem;
  color: var(--color-primary);
  transition: transform var(--transition-base);
  font-weight: 700;
  flex-shrink: 0;
  margin-left: 12px;
  width: 24px;
  text-align: center;
}

.faq-question.active .faq-icon {
  transform: rotate(135deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition:
    max-height 0.35s ease,
    padding 0.35s ease;
  padding: 0 20px;
  background: var(--color-faq-bg);
  color: var(--color-text-body);
  line-height: 1.8;
  font-size: 0.95rem;
}
.faq-answer.show {
  padding: 16px 20px;
}

.faq-answer p {
  margin-bottom: 10px;
}

/* ============================================
   13. 文章详情
   ============================================ */
.article-header {
  margin-bottom: 30px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--color-border);
}

.article-header h1 {
  font-size: 1.8rem;
  color: var(--color-primary);
  margin-bottom: 12px;
  line-height: 1.4;
  font-weight: 700;
}

.article-content {
  line-height: 1.9;
  color: var(--color-text-body);
  font-size: 1.02rem;
}
.article-content p {
  margin-bottom: 18px;
}
.article-content img {
  border-radius: var(--radius-lg);
  margin: 20px 0;
  box-shadow: var(--shadow-sm);
}
.article-content h2,
.article-content h3 {
  color: var(--color-text-heading);
  margin: 28px 0 12px;
}

.article-nav {
  margin-top: 40px;
  padding-top: 24px;
  border-top: 1px solid var(--color-border);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}
.article-nav a {
  color: var(--color-primary);
}
.article-nav a:hover {
  color: var(--color-accent);
}

/* ============================================
   14. 关于我们
   ============================================ */
.about-block {
  margin-bottom: 40px;
}
.about-block h2 {
  font-size: 1.5rem;
  color: var(--color-primary);
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--color-border);
  font-weight: 700;
}
.about-block p {
  color: var(--color-text-body);
  line-height: 1.8;
  margin-bottom: 12px;
}

.values-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
}
.value-item {
  background: var(--color-white);
  border-radius: var(--radius-xl);
  padding: 28px 24px;
  border: 1px solid var(--color-border-light);
  text-align: center;
  transition: all var(--transition-base);
  box-shadow: var(--shadow-sm);
}
.value-item:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
}
.value-item h3 {
  font-size: 1.1rem;
  color: var(--color-primary);
  margin-bottom: 10px;
  font-weight: 600;
}
.value-item p {
  color: var(--color-text-muted);
  font-size: 0.9rem;
  line-height: 1.6;
}

.contact-list li {
  padding: 10px 0;
  font-size: 1rem;
  color: var(--color-text-body);
  border-bottom: 1px solid var(--color-border-light);
  display: flex;
  align-items: center;
  gap: 8px;
}
.contact-list li:last-child {
  border-bottom: none;
}
.contact-list li strong {
  color: var(--color-text-heading);
  min-width: 80px;
  display: inline-block;
}

/* ============================================
   15. 富文本
   ============================================ */
.rich-text {
  line-height: 1.9;
  color: var(--color-text-body);
  font-size: 1rem;
}
.rich-text p {
  margin-bottom: 16px;
}
.rich-text h1,
.rich-text h2,
.rich-text h3,
.rich-text h4 {
  margin-top: 28px;
  margin-bottom: 12px;
  color: var(--color-primary);
  font-weight: 700;
}
.rich-text ul,
.rich-text ol {
  padding-left: 24px;
  margin-bottom: 16px;
}
.rich-text li {
  margin-bottom: 8px;
}
.rich-text img {
  border-radius: var(--radius-lg);
  margin: 16px 0;
  max-width: 100%;
  box-shadow: var(--shadow-sm);
}
.rich-text blockquote {
  border-left: 4px solid var(--color-primary);
  padding: 14px 22px;
  margin: 20px 0;
  background: var(--color-bg);
  color: var(--color-text-body);
  border-radius: 0 var(--radius-lg) var(--radius-lg) 0;
}
.rich-text a {
  color: var(--color-primary);
  text-decoration: underline;
}
.rich-text table {
  width: 100%;
  border-collapse: collapse;
  margin: 16px 0;
}
.rich-text th,
.rich-text td {
  border: 1px solid var(--color-border);
  padding: 10px 14px;
}
.rich-text th {
  background: var(--color-primary);
  color: #fff;
  font-weight: 600;
}

/* ============================================
   16. 表单
   ============================================ */
.form-container {
  max-width: 720px;
  margin: 0 auto;
}

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

.form-group {
  margin-bottom: 24px;
}

.form-group label {
  display: block;
  margin-bottom: 8px;
  font-weight: 600;
  color: var(--color-text-heading);
  font-size: 0.95rem;
}

.form-group .required {
  color: var(--color-danger);
  margin-left: 2px;
}

.form-control {
  width: 100%;
  height: 44px;
  padding: 0 16px;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: 0.95rem;
  font-family: var(--font-family);
  transition: all var(--transition-fast);
  background: var(--color-white);
  color: var(--color-text-heading);
}
.form-control:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(15, 76, 129, 0.12);
}
.form-control::placeholder {
  color: var(--color-text-light);
}

.form-control-file {
  padding: 8px 0;
  font-size: 0.95rem;
  color: var(--color-text-muted);
}
.form-control-file::file-selector-button {
  padding: 8px 16px;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  background: var(--color-white);
  color: var(--color-text-body);
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
  margin-right: 12px;
}
.form-control-file::file-selector-button:hover {
  background: var(--color-bg);
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.textarea {
  height: auto !important;
  resize: vertical;
  min-height: 110px;
  padding: 12px 16px;
  line-height: 1.7;
}

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

/* 复选框美化 */
.checkbox-group {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.checkbox-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.95rem;
  color: var(--color-text-body);
  cursor: pointer;
  padding: 8px 16px;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  user-select: none;
}
.checkbox-label:hover {
  border-color: var(--color-primary);
  background: #f0f4ff;
}
.checkbox-label:has(input:checked) {
  border-color: var(--color-accent);
  background: #edf8f2;
  color: var(--color-accent-dark);
}

.checkbox-label input[type='checkbox'] {
  width: 16px;
  height: 16px;
  accent-color: var(--color-accent);
  cursor: pointer;
}

/* 单选按钮美化 */
.radio-group {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
}

.radio-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.95rem;
  color: var(--color-text-body);
  cursor: pointer;
  padding: 10px 20px;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  user-select: none;
}
.radio-label:hover {
  border-color: var(--color-primary);
  background: #f0f4ff;
}
.radio-label:has(input[type='radio']:checked) {
  border-color: var(--color-primary);
  background: #e8f4ff;
  color: var(--color-primary);
}

.radio-label input[type='radio'] {
  width: 16px;
  height: 16px;
  accent-color: var(--color-primary);
  cursor: pointer;
}

/* 帮助文字 */
.help-text {
  margin-top: 6px;
  font-size: 0.85rem;
  color: var(--color-text-light);
}

/* 提交按钮 */
.form-actions {
  margin-top: 32px;
  text-align: center;
}

.form-actions .btn {
  min-width: 200px;
}

/* ============================================
   17. 筛选表单
   ============================================ */
.filter-form {
  margin-bottom: 32px;
  padding: 20px 24px;
  background: var(--color-white);
  border-radius: var(--radius-xl);
  border: 1px solid var(--color-border-light);
  box-shadow: var(--shadow-sm);
}

.filter-row {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  align-items: center;
}

.filter-row input[type='text'] {
  flex: 1;
  min-width: 180px;
  height: 42px;
  padding: 0 16px;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: 0.95rem;
  font-family: var(--font-family);
  transition: all var(--transition-fast);
  color: var(--color-text-heading);
}
.filter-row input[type='text']:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(15, 76, 129, 0.12);
}
.filter-row input[type='text']::placeholder {
  color: var(--color-text-light);
}

.filter-row .btn {
  height: 42px;
  padding: 0 24px;
}

.filter-row .btn-outline {
  color: var(--color-text-body);
  border-color: var(--color-border);
  background: var(--color-white);
  box-shadow: none;
}
.filter-row .btn-outline:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  box-shadow: none;
}

/* ============================================
   18. 提示 (Alert)
   ============================================ */
.alert {
  padding: 14px 20px;
  border-radius: var(--radius-lg);
  margin-bottom: 24px;
  font-size: 0.95rem;
  line-height: 1.6;
}

.alert-error {
  background: #fde8e8;
  color: var(--color-danger);
  border: 1px solid #f5c6cb;
}

.alert-success {
  background: #e8f8ef;
  color: var(--color-accent-dark);
  border: 1px solid #c6f6d5;
}

.alert-warning {
  background: #fff8e1;
  color: #856404;
  border: 1px solid #ffeaa7;
}

/* ============================================
   19. 成功页
   ============================================ */
.success-page {
  text-align: center;
  padding: 80px 20px;
  animation: fadeInUp 0.5s ease;
}

.success-icon {
  font-size: 4rem;
  margin-bottom: 24px;
  display: block;
}

.success-page h1 {
  font-size: 1.8rem;
  color: var(--color-primary);
  margin-bottom: 12px;
  font-weight: 700;
}

.success-page p {
  color: var(--color-text-muted);
  font-size: 1.05rem;
  margin-bottom: 32px;
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
}

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

.success-actions .btn-primary {
  background: var(--color-primary);
  border-color: var(--color-primary);
  box-shadow: 0 4px 12px rgba(15, 76, 129, 0.25);
}
.success-actions .btn-primary:hover {
  background: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
}

/* ============================================
   20. 分页
   ============================================ */
.pagination {
  display: flex;
  justify-content: center;
  gap: 6px;
  margin-top: 44px;
  flex-wrap: wrap;
}

.pagination a,
.pagination span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 40px;
  height: 40px;
  padding: 0 14px;
  border-radius: var(--radius-lg);
  font-size: 0.9rem;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  color: var(--color-text-body);
  text-decoration: none;
  transition: all var(--transition-fast);
}
.pagination a:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  text-decoration: none;
  z-index: 1;
}
.pagination .current {
  background: var(--color-primary);
  color: var(--color-white);
  border-color: var(--color-primary);
  z-index: 1;
}

/* ============================================
   21. 空状态
   ============================================ */
.empty-state {
  text-align: center;
  padding: 60px 20px;
  color: var(--color-text-light);
  font-size: 1rem;
  grid-column: 1 / -1;
}

/* ============================================
   22. 页脚
   ============================================ */
.site-footer {
  background: #1a202c;
  color: #cbd5e0;
  padding: 56px 0 0;
  margin-top: 60px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-col h4 {
  color: #fff;
  font-size: 1rem;
  margin-bottom: 18px;
  font-weight: 600;
  letter-spacing: 1px;
  position: relative;
  padding-bottom: 10px;
}
.footer-col h4::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 28px;
  height: 2px;
  background: var(--color-accent);
  border-radius: 1px;
}

.footer-col p {
  font-size: 0.9rem;
  line-height: 1.8;
  color: #a0aec0;
}

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

.footer-col ul li a {
  color: #a0aec0;
  font-size: 0.9rem;
  text-decoration: none;
  transition: all var(--transition-fast);
  display: inline-flex;
  align-items: center;
  gap: 4px;
}
.footer-col ul li a:hover {
  color: #fff;
  padding-left: 4px;
  text-decoration: none;
}

.footer-col ul li {
  color: #a0aec0;
  font-size: 0.9rem;
}

.footer-bottom {
  text-align: center;
  padding: 20px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  font-size: 0.88rem;
  color: #718096;
}

/* ============================================
   23. 响应式设计
   ============================================ */

/* 平板 (max-width: 768px) */
@media (max-width: 768px) {
  /* 导航 */
  .mobile-menu-btn {
    display: flex;
  }
  .main-nav {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-border);
    padding: 16px 20px;
    display: none;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
    max-height: calc(100vh - var(--header-height));
    overflow-y: auto;
  }
  .main-nav.open {
    display: block;
    animation: fadeIn 0.2s ease;
  }
  .main-nav ul {
    flex-direction: column;
    gap: 2px;
  }
  .main-nav ul li a {
    padding: 14px 16px;
    font-size: 16px;
  }
  .main-nav ul li.active a::after {
    display: none;
  }
  .main-nav ul li.active a {
    background: var(--color-bg);
    border-radius: var(--radius-md);
  }

  /* 英雄区 */
  .hero {
    padding: 50px 20px 60px;
    min-height: auto;
  }
  .hero h1 {
    letter-spacing: 1px;
  }
  .hero-actions {
    flex-direction: column;
    align-items: center;
  }
  .hero-actions .btn {
    width: 100%;
    max-width: 280px;
  }

  /* 区块 */
  .section {
    padding: 44px 0;
  }
  .section-header {
    margin-bottom: 32px;
  }

  /* 网格布局调整 */
  .category-cards {
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: 16px;
  }
  .info-columns {
    grid-template-columns: 1fr;
  }
  .trust-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .trust-item + .trust-item::before {
    display: none;
  }
  .values-grid {
    grid-template-columns: 1fr;
  }
  .material-grid {
    grid-template-columns: 1fr;
  }
  .recycler-grid {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
  }

  /* 表单 */
  .form {
    padding: 24px;
  }
  .form-row {
    grid-template-columns: 1fr;
    gap: 0;
  }

  /* 详情页 */
  .detail-header {
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 24px 20px;
  }
  .step-item {
    flex-direction: column;
    align-items: flex-start;
  }
  .steps-list::before {
    left: 19px;
  }

  /* 文章 */
  .article-item {
    padding: 20px;
  }

  /* 空状态在单列网格中 */
  .empty-state {
    grid-column: 1;
  }

  /* 市场行情响应式 */
  .market-prices {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }
  .price-item {
    padding: 20px 14px;
  }
  .price-low,
  .price-high {
    font-size: 1.1rem;
  }
  .price-item-icon {
    font-size: 2rem;
  }

  /* 案例卡片响应式 */
  .case-card-body {
    padding: 20px;
  }
  .case-card-body h3 {
    font-size: 1.1rem;
  }
  .case-section p {
    padding-left: 0;
    margin-top: 4px;
  }

  /* 成交速报响应式 */
  .ticker-label {
    font-size: 0.8rem;
  }
  .ticker-item {
    font-size: 0.8rem;
  }

  /* 弹窗响应式 */
  .modal-container {
    max-height: 85vh;
    margin: 12px;
  }
  .modal-header {
    padding: 20px 20px 0;
  }
  .modal-header h2 {
    font-size: 1.25rem;
  }
  .modal-form {
    padding: 0 20px 20px;
  }

  /* 浮动按钮响应式 */
  .quick-estimate-fab {
    bottom: 20px;
    right: 20px;
    padding: 12px 18px;
    font-size: 0.9rem;
  }
  .fab-icon {
    font-size: 1.2rem;
  }

  /* 筛选 */
  .filter-row input[type='text'] {
    min-width: 140px;
  }
}

/* 手机 (max-width: 480px) */
@media (max-width: 480px) {
  /* 导航 */
  .logo-text {
    font-size: 18px;
  }
  .logo-icon {
    width: 32px;
    height: 32px;
    font-size: 15px;
  }

  /* 英雄区 */
  .hero {
    padding: 36px 16px 48px;
  }
  .hero-subtitle {
    letter-spacing: 2px;
  }

  /* 区块 */
  .section {
    padding: 32px 0;
  }
  .section-header h2 {
    font-size: 1.4rem;
  }

  /* 网格 */
  .category-cards {
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 12px;
  }
  .category-card {
    padding: 24px 16px;
  }
  .category-icon {
    font-size: 2.2rem;
  }

  .trust-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }
  .trust-number {
    font-size: 2rem;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  /* 筛选 */
  .filter-form {
    padding: 16px;
  }
  .filter-row {
    flex-direction: column;
  }
  .filter-row input[type='text'] {
    width: 100%;
    min-width: unset;
  }

  /* 表单 */
  .form {
    padding: 20px 16px;
  }
  .form-container {
    padding: 0 8px;
  }
  .form-actions .btn {
    width: 100%;
  }

  /* 表格自适应 */
  .table-wrapper {
    margin: 0 -12px;
    border-radius: 0;
    border-left: none;
    border-right: none;
  }
  .data-table th,
  .data-table td {
    padding: 10px 12px;
    font-size: 0.88rem;
  }

  /* 详情页 */
  .detail-block h2 {
    font-size: 1.3rem;
  }
  .step-item {
    padding: 16px;
  }
  .step-num {
    width: 38px;
    height: 38px;
    font-size: 1rem;
  }

  /* 分页 */
  .pagination a,
  .pagination span {
    min-width: 36px;
    height: 36px;
    font-size: 0.85rem;
  }

  /* 按钮 */
  .btn-lg {
    padding: 12px 28px;
    font-size: 15px;
  }

  /* 文章 */
  .article-item {
    padding: 16px;
  }
  .article-meta {
    flex-wrap: wrap;
    gap: 8px;
  }

  /* 市场行情 手机 */
  .market-prices {
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
  }
  .price-item {
    padding: 16px 10px;
  }
  .price-item-icon {
    font-size: 1.8rem;
  }
  .price-item h3 {
    font-size: 1rem;
  }
  .price-low,
  .price-high {
    font-size: 1rem;
  }

  /* 案例 手机 */
  .case-card-body h3 {
    font-size: 1rem;
  }
  .case-company {
    font-size: 0.88rem;
    padding: 8px 12px;
  }

  /* 弹窗 手机 */
  .modal-overlay {
    padding: 0;
    align-items: flex-end;
  }
  .modal-container {
    border-radius: var(--radius-xl) var(--radius-xl) 0 0;
    max-height: 92vh;
  }
  .upload-area {
    padding: 20px 16px;
  }
  .upload-icon {
    font-size: 2.2rem;
  }

  /* 浮动按钮 手机 */
  .quick-estimate-fab {
    bottom: 16px;
    right: 16px;
    padding: 10px 16px;
    font-size: 0.85rem;
    gap: 6px;
  }
  .quick-estimate-fab .fab-text {
    display: none;
  }

  /* 成功页 */
  .success-page {
    padding: 50px 16px;
  }

  /* CTA */
  .cta-block {
    padding: 28px 16px;
  }
  .cta-actions {
    flex-direction: column;
    align-items: center;
  }
  .cta-actions .btn {
    width: 100%;
    max-width: 280px;
  }

  /* 筛选标签 */
  .filter-tabs {
    gap: 6px;
  }
  .filter-tabs .tag {
    padding: 6px 14px;
    font-size: 0.85rem;
  }
}

/* ============================================
   24. 本地市场行情卡片
   ============================================ */
.market-prices {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-bottom: 20px;
}

.price-item {
  background: var(--color-white);
  border-radius: var(--radius-xl);
  padding: 28px 20px;
  text-align: center;
  border: 1px solid var(--color-border-light);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}
.price-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-primary);
}

.price-item-icon {
  font-size: 2.4rem;
  margin-bottom: 10px;
}

.price-item h3 {
  font-size: 1.1rem;
  color: var(--color-primary);
  margin-bottom: 12px;
  font-weight: 700;
}

.price-item-range {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  margin-bottom: 4px;
}

.price-low {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--color-accent);
}

.price-sep {
  color: var(--color-text-light);
  font-size: 1.1rem;
}

.price-high {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--color-primary);
}

.price-unit {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-bottom: 10px;
}

.price-trend {
  display: inline-block;
  font-size: 0.82rem;
  padding: 3px 10px;
  border-radius: 12px;
  font-weight: 500;
}
.price-trend.up {
  background: #e8f8ef;
  color: var(--color-accent-dark);
}
.price-trend.steady {
  background: #f0f4f8;
  color: var(--color-text-muted);
}

.market-price-cta {
  text-align: center;
  padding: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}
.market-price-cta p {
  color: var(--color-text-muted);
  font-size: 0.9rem;
}

/* ============================================
   25. 客户案例卡片
   ============================================ */
.case-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  max-width: 900px;
  margin: 0 auto;
}

.case-card {
  background: var(--color-white);
  border-radius: var(--radius-xl);
  border: 1px solid var(--color-border-light);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: all var(--transition-base);
}
.case-card:hover {
  box-shadow: var(--shadow-lg);
  border-color: var(--color-primary);
}

.case-card-header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px 28px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
}

.case-badge {
  display: inline-block;
  background: var(--color-accent);
  color: #fff;
  padding: 4px 14px;
  border-radius: 16px;
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 1px;
}

.case-tag {
  display: inline-block;
  background: rgba(255, 255, 255, 0.2);
  color: rgba(255, 255, 255, 0.9);
  padding: 3px 12px;
  border-radius: 12px;
  font-size: 0.8rem;
}

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

.case-card-body h3 {
  font-size: 1.3rem;
  color: var(--color-primary);
  margin-bottom: 12px;
  font-weight: 700;
  line-height: 1.5;
}

.case-company {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 20px;
  padding: 10px 16px;
  background: var(--color-bg);
  border-radius: var(--radius-md);
  font-size: 0.95rem;
  color: var(--color-text-heading);
}

.case-detail {
  display: grid;
  gap: 16px;
}

.case-section h4 {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.95rem;
  color: var(--color-text-heading);
  margin-bottom: 6px;
  font-weight: 600;
}

.case-section h4 span {
  flex-shrink: 0;
}

.case-section p {
  color: var(--color-text-muted);
  font-size: 0.93rem;
  line-height: 1.8;
  padding-left: 26px;
}

.case-result {
  padding: 16px 20px;
  background: linear-gradient(135deg, #e8f8ef, #f0faf4);
  border-radius: var(--radius-lg);
  border-left: 3px solid var(--color-accent);
}
.case-result p {
  color: var(--color-accent-dark);
  font-weight: 500;
}

/* ============================================
   26. 最新成交速报 (滚动条)
   ============================================ */
.deal-ticker {
  background: #0a1628;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  padding: 12px 0;
  overflow: hidden;
}

.ticker-inner {
  display: flex;
  align-items: center;
  gap: 20px;
}

.ticker-label {
  flex-shrink: 0;
  color: var(--color-accent);
  font-weight: 700;
  font-size: 0.88rem;
  white-space: nowrap;
  letter-spacing: 1px;
}

.ticker-track {
  display: flex;
  gap: 60px;
  animation: tickerScroll 30s linear infinite;
  white-space: nowrap;
}

.ticker-track:hover {
  animation-play-state: paused;
}

.ticker-item {
  color: #cbd5e0;
  font-size: 0.88rem;
  white-space: nowrap;
  position: relative;
}
.ticker-item::before {
  content: '🏆';
  margin-right: 6px;
}

@keyframes tickerScroll {
  0% {
    transform: translateX(0);
  }
  100% {
    transform: translateX(-50%);
  }
}

/* ============================================
   27. 页脚信任徽章
   ============================================ */
.footer-trust-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 14px;
}

.trust-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  background: rgba(255, 255, 255, 0.08);
  color: #a0aec0;
  padding: 4px 12px;
  border-radius: 12px;
  font-size: 0.8rem;
  font-weight: 500;
}

/* ============================================
   28. 浮动快速估价按钮 (FAB)
   ============================================ */
.quick-estimate-fab {
  position: fixed;
  bottom: 32px;
  right: 32px;
  z-index: 999;
  display: flex;
  align-items: center;
  gap: 8px;
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-light));
  color: #fff;
  border: none;
  border-radius: 50px;
  padding: 14px 24px;
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  box-shadow: 0 4px 20px rgba(46, 139, 87, 0.4);
  transition: all var(--transition-base);
  animation: pulse 2s infinite;
}
.quick-estimate-fab:hover {
  transform: translateY(-3px) scale(1.05);
  box-shadow: 0 8px 30px rgba(46, 139, 87, 0.5);
}

.fab-icon {
  font-size: 1.4rem;
}

/* ============================================
   29. 估价弹窗 (Modal)
   ============================================ */
.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.55);
  z-index: 2000;
  justify-content: center;
  align-items: center;
  padding: 24px;
  animation: fadeIn 0.2s ease;
  overflow-y: auto;
}

.modal-overlay.active {
  display: flex;
}

.modal-container {
  background: var(--color-white);
  border-radius: var(--radius-xl);
  max-width: 600px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow-xl);
  animation: fadeInUp 0.3s ease;
  position: relative;
}

.modal-close {
  position: absolute;
  top: 12px;
  right: 16px;
  font-size: 2rem;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--color-text-light);
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-full);
  transition: all var(--transition-fast);
  z-index: 1;
  line-height: 1;
}
.modal-close:hover {
  background: var(--color-bg);
  color: var(--color-text-heading);
}

.modal-header {
  padding: 28px 28px 0;
  margin-bottom: 20px;
}

.modal-header h2 {
  font-size: 1.5rem;
  color: var(--color-primary);
  font-weight: 700;
  margin-bottom: 6px;
}

.modal-header p {
  color: var(--color-text-muted);
  font-size: 0.95rem;
}

.modal-form {
  padding: 0 28px 28px;
  border: none;
  box-shadow: none;
  background: transparent;
}

/* 上传区域 */
.upload-area {
  position: relative;
  border: 2px dashed var(--color-border);
  border-radius: var(--radius-lg);
  padding: 32px 20px;
  text-align: center;
  cursor: pointer;
  transition: all var(--transition-base);
  background: var(--color-bg);
}
.upload-area:hover {
  border-color: var(--color-primary);
  background: #f0f4ff;
}

.upload-input {
  position: absolute;
  inset: 0;
  opacity: 0;
  cursor: pointer;
}

.upload-icon {
  font-size: 2.8rem;
  display: block;
  margin-bottom: 8px;
}

.upload-placeholder p {
  color: var(--color-text-muted);
  font-size: 0.95rem;
  margin-bottom: 4px;
}

.upload-preview {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 12px;
}

.upload-preview img {
  width: 80px;
  height: 80px;
  object-fit: cover;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
}

/* 表单信任文案 */
.form-trust {
  background: linear-gradient(135deg, #fff8e1, #fffde7);
  border: 1px solid #ffeaa7;
  border-radius: var(--radius-lg);
  padding: 12px 16px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 0.85rem;
  color: #856404;
  line-height: 1.6;
}

/* 弹窗紧凑样式：无需滚动即可提交 */
.modal-overlay .modal-header {
  padding: 18px 24px 0;
  margin-bottom: 10px;
}
.modal-overlay .modal-header h2 {
  font-size: 1.2rem;
  margin-bottom: 2px;
}
.modal-overlay .modal-header p {
  font-size: 0.85rem;
}
.modal-overlay .modal-form {
  padding: 0 24px 18px;
}
.modal-overlay .modal-form .form-group {
  margin-bottom: 10px;
}
.modal-overlay .upload-area {
  padding: 14px 16px;
}
.modal-overlay .upload-icon {
  font-size: 1.6rem;
  margin-bottom: 2px;
}
.modal-overlay .upload-placeholder p {
  font-size: 0.82rem;
  margin-bottom: 0;
}
.modal-overlay .upload-placeholder .help-text {
  font-size: 0.75rem;
}
.modal-overlay .upload-preview {
  margin-top: 6px;
  gap: 6px;
}
.modal-overlay .upload-preview img {
  width: 52px;
  height: 52px;
}
.modal-overlay .checkbox-group {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 8px;
}
.modal-overlay .checkbox-label {
  font-size: 0.85rem;
  padding: 2px 0;
}
.modal-overlay .form-control {
  padding: 6px 10px;
  font-size: 0.9rem;
}
.modal-overlay .form-row {
  gap: 12px;
}
.modal-overlay .form-row .form-group {
  margin-bottom: 0;
}
.modal-overlay .form-trust {
  padding: 8px 12px;
  flex-direction: row;
  gap: 16px;
  font-size: 0.78rem;
}
.modal-overlay .form-trust span {
  white-space: nowrap;
}
.modal-overlay .form-actions {
  margin-top: 2px;
}
.modal-overlay .form-actions .btn {
  padding: 8px 24px;
  font-size: 0.95rem;
}

/* 物资品类标签样式 */
.modal-overlay .tag-group {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.modal-overlay .tag-label {
  display: inline-flex;
  padding: 5px 16px;
  border: 1px solid #d0d5dd;
  border-radius: 20px;
  background: var(--color-white);
  cursor: pointer;
  user-select: none;
  font-size: 0.85rem;
  transition: all 0.15s ease;
  color: var(--color-text-body);
}
.modal-overlay .tag-label:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}
.modal-overlay .tag-label input {
  display: none;
}
.modal-overlay .tag-label:has(input:checked) {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #fff;
}

/* ============================================
   24. 打印样式
   ============================================ */
@media print {
  .site-header,
  .site-footer,
  .cta-block,
  .hero-actions,
  .form-actions,
  .mobile-menu-btn {
    display: none !important;
  }
  body {
    background: #fff;
    color: #333;
  }
  .container {
    max-width: 100%;
    padding: 0;
  }
}