/* ==========================================================================
   草莓视频 (y9fo0o.cn) 官方汽车改装与视频社区 - 全站核心外部样式表
   品牌定位：国内知名汽车改装公司 + 视频社区
   设计规范：Apex Black Gold & Circuit Crimson (赛道黑金赤红)
   ========================================================================== */

:root {
  --bg-primary: #0b0d11;
  --bg-secondary: #141822;
  --bg-tertiary: #1b202e;
  --bg-card: #151924;
  --bg-card-hover: #1c2232;
  
  --brand-red: #e63946;
  --brand-red-hover: #ff4d5a;
  --brand-gold: #f4a261;
  --brand-gold-dark: #e76f51;
  --brand-cyan: #00b4d8;
  --brand-cyan-glow: rgba(0, 180, 216, 0.4);
  
  --text-main: #f8fafc;
  --text-body: #e2e8f0;
  --text-muted: #94a3b8;
  --text-dim: #64748b;
  
  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-highlight: rgba(230, 57, 70, 0.4);
  --border-gold: rgba(244, 162, 97, 0.4);
  
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  
  --shadow-card: 0 10px 30px -10px rgba(0, 0, 0, 0.5);
  --shadow-glow-red: 0 0 25px rgba(230, 57, 70, 0.35);
  --shadow-glow-gold: 0 0 25px rgba(244, 162, 97, 0.3);
  
  --transition-normal: all 0.28s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-fast: all 0.15s ease;
}

/* 基础重置与规范 */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--text-body);
  background-color: var(--bg-primary);
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
  background: radial-gradient(circle at 50% 0%, #171d2b 0%, #0b0d11 60%);
  background-attachment: fixed;
}

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

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

ul, ol {
  list-style: none;
}

button, input, textarea, select {
  font: inherit;
  border: none;
  outline: none;
}

/* 容器定义 */
.container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 20px;
}

.container-fluid {
  width: 100%;
  padding: 0 24px;
}

/* 排版与标题层级 */
h1, h2, h3, h4, h5, h6 {
  color: var(--text-main);
  font-weight: 700;
  line-height: 1.25;
}

.section-header {
  text-align: center;
  max-width: 800px;
  margin: 0 auto 48px;
  position: relative;
}

.section-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 14px;
  background: rgba(230, 57, 70, 0.12);
  border: 1px solid rgba(230, 57, 70, 0.3);
  border-radius: 999px;
  color: var(--brand-red);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.5px;
  margin-bottom: 12px;
  text-transform: uppercase;
}

.section-title {
  font-size: 2.1rem;
  font-weight: 800;
  margin-bottom: 12px;
  position: relative;
  display: inline-block;
}

.section-title::after {
  content: "";
  display: block;
  width: 60px;
  height: 4px;
  background: linear-gradient(90deg, var(--brand-red), var(--brand-gold));
  border-radius: 2px;
  margin: 10px auto 0;
}

.section-subtitle {
  color: var(--text-muted);
  font-size: 1.05rem;
  line-height: 1.5;
}

/* 顶部通用导航栏 */
.header-wrapper {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(11, 13, 17, 0.88);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-subtle);
  transition: var(--transition-normal);
}

.header-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
}

.brand-logo-link {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand-logo-img {
  height: 46px;
  width: auto;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 24px;
}

.nav-link {
  font-size: 0.98rem;
  font-weight: 600;
  color: var(--text-body);
  position: relative;
  padding: 6px 0;
}

.nav-link:hover, .nav-link.active {
  color: var(--brand-red);
}

.nav-link::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--brand-red);
  transition: var(--transition-fast);
}

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

.header-actions {
  display: flex;
  align-items: center;
  gap: 14px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 9px 20px;
  font-size: 0.92rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: var(--transition-fast);
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, var(--brand-red), #d62828);
  color: #ffffff;
  box-shadow: 0 4px 14px rgba(230, 57, 70, 0.3);
}

.btn-primary:hover {
  background: linear-gradient(135deg, var(--brand-red-hover), var(--brand-red));
  box-shadow: 0 6px 20px rgba(230, 57, 70, 0.45);
  transform: translateY(-1px);
}

.btn-outline {
  background: transparent;
  color: var(--brand-gold);
  border: 1px solid var(--border-gold);
}

.btn-outline:hover {
  background: rgba(244, 162, 97, 0.1);
  border-color: var(--brand-gold);
  color: #ffffff;
}

.btn-sm {
  padding: 6px 14px;
  font-size: 0.85rem;
}

/* 导航栏下方模拟搜索条 */
.header-search-bar {
  background: rgba(20, 24, 34, 0.95);
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding: 10px 0;
}

.search-box-inner {
  display: flex;
  align-items: center;
  gap: 16px;
}

.search-input-wrap {
  flex: 1;
  position: relative;
  display: flex;
  align-items: center;
}

.search-icon {
  position: absolute;
  left: 14px;
  width: 18px;
  height: 18px;
  fill: var(--text-muted);
  pointer-events: none;
}

.mock-search-input {
  width: 100%;
  height: 42px;
  background: #0b0d11;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 0 42px 0 42px;
  color: var(--text-main);
  font-size: 0.92rem;
  transition: var(--transition-fast);
}

.mock-search-input:focus {
  border-color: var(--brand-red);
  box-shadow: 0 0 10px rgba(230, 57, 70, 0.25);
}

.search-hot-tags {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.84rem;
  color: var(--text-dim);
  overflow-x: auto;
  white-space: nowrap;
}

.search-tag-item {
  color: var(--text-muted);
  background: rgba(255, 255, 255, 0.04);
  padding: 3px 9px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: var(--transition-fast);
}

.search-tag-item:hover {
  color: var(--brand-gold);
  background: rgba(244, 162, 97, 0.1);
}

/* 模拟搜索弹窗提示 */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(5px);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: var(--transition-normal);
}

.modal-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

.modal-card {
  width: 90%;
  max-width: 520px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-highlight);
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: var(--shadow-card), var(--shadow-glow-red);
  transform: translateY(20px);
  transition: var(--transition-normal);
}

.modal-overlay.active .modal-card {
  transform: translateY(0);
}

.modal-title {
  font-size: 1.35rem;
  margin-bottom: 12px;
  color: #ffffff;
  display: flex;
  align-items: center;
  gap: 10px;
}

.modal-body {
  color: var(--text-body);
  font-size: 0.95rem;
  line-height: 1.6;
  margin-bottom: 24px;
}

.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 12px;
}

/* 面包屑导航 */
.breadcrumbs-bar {
  padding: 14px 0;
  font-size: 0.86rem;
  color: var(--text-dim);
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}

.breadcrumbs-list {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
}

.breadcrumbs-list a {
  color: var(--text-muted);
}

.breadcrumbs-list a:hover {
  color: var(--brand-gold);
}

.breadcrumbs-separator {
  color: var(--text-dim);
}

.breadcrumbs-current {
  color: var(--brand-red);
  font-weight: 600;
}

/* Hero 首屏与主横幅 */
.hero-section {
  position: relative;
  padding: 70px 0 60px;
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 48px;
  align-items: center;
}

.hero-badge-wrap {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(244, 162, 97, 0.12);
  border: 1px solid rgba(244, 162, 97, 0.35);
  padding: 6px 14px;
  border-radius: 999px;
  color: var(--brand-gold);
  font-size: 0.88rem;
  font-weight: 700;
  margin-bottom: 18px;
}

.hero-main-title {
  font-size: 3rem;
  font-weight: 900;
  letter-spacing: -0.5px;
  margin-bottom: 18px;
  line-height: 1.18;
}

.text-gradient-red {
  background: linear-gradient(135deg, #ff4d5a, #e63946, #f4a261);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-description {
  font-size: 1.12rem;
  color: var(--text-body);
  line-height: 1.7;
  margin-bottom: 30px;
}

.hero-meta-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 32px;
  padding-top: 28px;
  border-top: 1px solid var(--border-subtle);
}

.stat-item-num {
  font-size: 1.8rem;
  font-weight: 900;
  color: var(--brand-gold);
}

.stat-item-label {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.hero-visual-card {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-card), var(--shadow-glow-red);
  border: 1px solid var(--border-highlight);
  background: var(--bg-card);
}

.hero-visual-img {
  width: 100%;
  aspect-ratio: 16/9;
  object-fit: cover;
  transition: transform 0.6s ease;
}

.hero-visual-card:hover .hero-visual-img {
  transform: scale(1.03);
}

.hero-visual-badge {
  position: absolute;
  top: 16px;
  right: 16px;
  background: rgba(11, 13, 17, 0.85);
  backdrop-filter: blur(8px);
  border: 1px solid var(--border-gold);
  color: var(--brand-gold);
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  font-size: 0.82rem;
  font-weight: 700;
}

/* 核心通用模块：视频卡片系统 (鼠标悬停播放按钮微动效) */
.video-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
}

.video-grid-4 {
  grid-template-columns: repeat(4, 1fr);
}

.video-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  overflow: hidden;
  position: relative;
  display: flex;
  flex-direction: column;
  transition: var(--transition-normal);
  box-shadow: var(--shadow-card);
}

.video-card:hover {
  transform: translateY(-6px);
  border-color: var(--brand-red);
  box-shadow: var(--shadow-glow-red);
}

.video-thumb-wrap {
  position: relative;
  width: 100%;
  aspect-ratio: 16/9;
  background: #0f121a;
  overflow: hidden;
}

.video-thumb-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.video-card:hover .video-thumb-img {
  transform: scale(1.06);
}

.video-duration {
  position: absolute;
  bottom: 8px;
  right: 8px;
  background: rgba(0, 0, 0, 0.75);
  color: #ffffff;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 2px 7px;
  border-radius: 4px;
}

.video-tag-pill {
  position: absolute;
  top: 8px;
  left: 8px;
  background: rgba(230, 57, 70, 0.9);
  color: #ffffff;
  font-size: 0.74rem;
  font-weight: 700;
  padding: 3px 8px;
  border-radius: 4px;
  letter-spacing: 0.3px;
}

/* 悬停播放动效按钮 */
.video-play-btn {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(11, 13, 17, 0.35);
  opacity: 0;
  transition: var(--transition-normal);
  cursor: pointer;
}

.video-play-circle {
  width: 54px;
  height: 54px;
  border-radius: 50%;
  background: var(--brand-red);
  box-shadow: 0 0 20px rgba(230, 57, 70, 0.8);
  display: flex;
  align-items: center;
  justify-content: center;
  transform: scale(0.7);
  transition: var(--transition-normal);
}

.video-play-icon {
  width: 20px;
  height: 20px;
  fill: #ffffff;
  margin-left: 3px;
}

.video-card:hover .video-play-btn {
  opacity: 1;
}

.video-card:hover .video-play-circle {
  transform: scale(1);
}

.video-info-box {
  padding: 16px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.video-card-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 8px;
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.video-card-desc {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.5;
  margin-bottom: 12px;
  flex: 1;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.video-card-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.8rem;
  color: var(--text-dim);
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding-top: 10px;
}

.meta-stats-group {
  display: flex;
  align-items: center;
  gap: 12px;
}

.meta-stat-single {
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.meta-stat-single svg {
  width: 14px;
  height: 14px;
  fill: currentColor;
}

/* 娱乐专区：TikTok短视频卡片 (竖屏瀑布流风格) */
.short-video-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(210px, 1fr));
  gap: 20px;
}

.short-video-card {
  background: var(--bg-card);
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--border-subtle);
  position: relative;
  transition: var(--transition-normal);
}

.short-video-card:hover {
  transform: translateY(-5px);
  border-color: var(--brand-gold);
  box-shadow: var(--shadow-glow-gold);
}

.short-video-thumb {
  position: relative;
  width: 100%;
  aspect-ratio: 9/16;
  background: #11141c;
  overflow: hidden;
}

.short-video-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.short-video-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(11, 13, 17, 0.95) 0%, rgba(11, 13, 17, 0.2) 50%, rgba(11, 13, 17, 0.5) 100%);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 14px;
}

.short-badge {
  align-self: flex-start;
  background: rgba(244, 162, 97, 0.88);
  color: #0b0d11;
  font-size: 0.72rem;
  font-weight: 800;
  padding: 3px 7px;
  border-radius: 4px;
}

.short-bottom-content {
  color: #ffffff;
}

.short-video-title {
  font-size: 0.94rem;
  font-weight: 700;
  line-height: 1.35;
  margin-bottom: 6px;
}

.short-video-stats {
  font-size: 0.78rem;
  color: #cbd5e1;
  display: flex;
  gap: 10px;
}

/* AI 赋能模块特色卡片 */
.ai-feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.ai-card {
  background: linear-gradient(145deg, #161b26, #12151e);
  border: 1px solid rgba(0, 180, 216, 0.25);
  border-radius: var(--radius-lg);
  padding: 28px;
  position: relative;
  overflow: hidden;
  transition: var(--transition-normal);
}

.ai-card:hover {
  border-color: var(--brand-cyan);
  box-shadow: 0 10px 30px -5px rgba(0, 180, 216, 0.25);
  transform: translateY(-4px);
}

.ai-card-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  background: rgba(0, 180, 216, 0.12);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}

.ai-card-icon svg {
  width: 28px;
  height: 28px;
  fill: var(--brand-cyan);
}

.ai-card-title {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 12px;
  color: #ffffff;
}

.ai-card-desc {
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 20px;
}

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

.ai-pill {
  font-size: 0.78rem;
  color: var(--brand-cyan);
  background: rgba(0, 180, 216, 0.1);
  padding: 4px 10px;
  border-radius: 999px;
  border: 1px solid rgba(0, 180, 216, 0.2);
}

/* 专家顾问团队展示卡片 */
.expert-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
}

.expert-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 24px;
  text-align: center;
  transition: var(--transition-normal);
  display: flex;
  flex-direction: column;
}

.expert-card:hover {
  border-color: var(--brand-gold);
  transform: translateY(-5px);
  box-shadow: var(--shadow-glow-gold);
}

.expert-avatar-wrap {
  width: 100px;
  height: 100px;
  border-radius: 50%;
  margin: 0 auto 16px;
  padding: 4px;
  background: linear-gradient(135deg, var(--brand-red), var(--brand-gold));
}

.expert-avatar-img {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  object-fit: cover;
  background: #1e2430;
}

.expert-name {
  font-size: 1.25rem;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 4px;
}

.expert-title {
  font-size: 0.88rem;
  color: var(--brand-gold);
  font-weight: 600;
  margin-bottom: 12px;
}

.expert-bio {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.5;
  margin-bottom: 16px;
  flex: 1;
}

.expert-awards {
  font-size: 0.8rem;
  color: var(--text-dim);
  background: rgba(255, 255, 255, 0.03);
  padding: 8px;
  border-radius: var(--radius-sm);
  margin-bottom: 18px;
}

.expert-actions {
  display: flex;
  gap: 10px;
  justify-content: center;
}

/* 合作改装品牌墙 */
.brand-wall-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 16px;
  align-items: center;
}

.brand-wall-item {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 16px;
  text-align: center;
  font-weight: 700;
  font-size: 1rem;
  color: var(--text-muted);
  transition: var(--transition-fast);
}

.brand-wall-item:hover {
  color: var(--brand-red);
  border-color: var(--brand-red);
  background: var(--bg-card-hover);
}

/* How-To 加入品牌社区指南 */
.howto-steps-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-bottom: 48px;
}

.howto-step-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 24px 20px;
  position: relative;
}

.step-num-badge {
  font-size: 1.8rem;
  font-weight: 900;
  color: var(--brand-red);
  opacity: 0.8;
  margin-bottom: 12px;
}

.step-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 8px;
}

.step-desc {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.5;
}

/* FAQ 问答手风琴 */
.faq-list {
  max-width: 860px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: var(--transition-fast);
}

.faq-item:hover {
  border-color: rgba(255, 255, 255, 0.2);
}

.faq-question {
  padding: 18px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  font-weight: 700;
  color: #ffffff;
  font-size: 1.05rem;
}

.faq-toggle-icon {
  width: 20px;
  height: 20px;
  fill: var(--text-muted);
  transition: transform 0.3s ease;
}

.faq-item.active .faq-toggle-icon {
  transform: rotate(180deg);
  fill: var(--brand-red);
}

.faq-answer {
  padding: 0 24px 20px;
  color: var(--text-body);
  font-size: 0.94rem;
  line-height: 1.65;
  display: none;
}

.faq-item.active .faq-answer {
  display: block;
}

/* 用户真实口碑评价 */
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.review-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 24px;
  display: flex;
  flex-direction: column;
  transition: var(--transition-fast);
}

.review-card:hover {
  border-color: var(--border-gold);
}

.review-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 14px;
}

.review-avatar {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: #232a3b;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  color: var(--brand-gold);
}

.review-user-name {
  font-weight: 700;
  color: #ffffff;
  font-size: 0.98rem;
}

.review-car-model {
  font-size: 0.82rem;
  color: var(--text-dim);
}

.review-stars {
  color: #f4a261;
  font-size: 0.9rem;
  margin-bottom: 12px;
}

.review-text {
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.6;
  flex: 1;
}

/* 实体改装工坊与联系我们 */
.contact-section-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 36px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  padding: 40px;
  overflow: hidden;
}

.store-info-title {
  font-size: 1.8rem;
  color: #ffffff;
  margin-bottom: 16px;
}

.store-detail-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-bottom: 24px;
  font-size: 0.95rem;
}

.store-detail-row {
  display: flex;
  gap: 10px;
  color: var(--text-body);
}

.store-detail-label {
  color: var(--text-dim);
  min-width: 80px;
}

.qr-code-group {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 24px;
}

.qr-card-item {
  background: #0b0d11;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 12px;
  text-align: center;
}

.qr-card-img {
  width: 100%;
  aspect-ratio: 1/1;
  object-fit: contain;
  margin-bottom: 8px;
}

.qr-card-title {
  font-size: 0.82rem;
  font-weight: 700;
  color: #ffffff;
}

.qr-card-sub {
  font-size: 0.74rem;
  color: var(--text-dim);
}

/* 页脚区域 */
.site-footer {
  margin-top: auto;
  background: #07090c;
  border-top: 1px solid var(--border-subtle);
  padding: 60px 0 30px;
  color: var(--text-muted);
  font-size: 0.92rem;
}

.footer-top-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 36px;
  margin-bottom: 40px;
}

.footer-brand-desc {
  font-size: 0.88rem;
  line-height: 1.65;
  margin: 16px 0 20px;
  max-width: 380px;
}

.footer-col-title {
  color: #ffffff;
  font-weight: 700;
  font-size: 1.05rem;
  margin-bottom: 16px;
  position: relative;
  padding-bottom: 8px;
}

.footer-col-title::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 24px;
  height: 2px;
  background: var(--brand-red);
}

.footer-link-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-link-list a:hover {
  color: var(--brand-red);
  padding-left: 4px;
}

.social-share-row {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 12px;
}

.share-btn {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: #151922;
  border: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition-fast);
}

.share-btn:hover {
  background: var(--brand-red);
  border-color: var(--brand-red);
  color: #ffffff;
}

.share-btn svg {
  width: 18px;
  height: 18px;
  fill: currentColor;
}

.footer-bottom-bar {
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding-top: 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 0.84rem;
  color: var(--text-dim);
}

.update-date-text {
  color: var(--brand-gold);
  font-weight: 600;
}

/* 响应式媒体查询 (移动端适配) */
@media (max-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 36px;
  }
  .ai-feature-grid, .video-grid-4, .brand-wall-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .howto-steps-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .reviews-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .contact-section-grid {
    grid-template-columns: 1fr;
  }
  .footer-top-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .header-top {
    height: 64px;
  }
  .nav-menu {
    display: none;
  }
  .hero-main-title {
    font-size: 2.2rem;
  }
  .search-box-inner {
    flex-direction: column;
    align-items: stretch;
  }
  .video-grid-4, .ai-feature-grid, .brand-wall-grid, .reviews-grid, .qr-code-group {
    grid-template-columns: 1fr;
  }
  .howto-steps-grid {
    grid-template-columns: 1fr;
  }
  .footer-top-grid {
    grid-template-columns: 1fr;
  }
  .footer-bottom-bar {
    flex-direction: column;
    text-align: center;
  }
}