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

:root {
  --color-primary: #1a1a2e;
  --color-secondary: #16213e;
  --color-accent: #c9a96e;
  --color-accent-light: #e8d5a8;
  --color-accent-dark: #a07d3f;
  --color-text: #2d2d2d;
  --color-text-light: #6b6b6b;
  --color-text-white: #f5f5f5;
  --color-bg: #faf9f6;
  --color-bg-alt: #f0ede6;
  --color-bg-dark: #1a1a2e;
  --color-border: #e0dcd3;
  --color-success: #4a9d6e;
  --color-warning: #d4a843;
  --color-error: #c45c5c;
  --font-heading: "Noto Serif SC", "STSong", "SimSun", serif;
  --font-body: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.15);
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --transition: 0.3s ease;
  --max-width: 1200px;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  color: var(--color-text);
  background-color: var(--color-bg);
  line-height: 1.8;
  overflow-x: hidden;
}

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

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

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

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  color: var(--color-primary);
  line-height: 1.4;
  margin-bottom: 0.6em;
}

h1 { font-size: 2.4rem; font-weight: 700; }
h2 { font-size: 1.9rem; font-weight: 700; }
h3 { font-size: 1.5rem; font-weight: 600; }
h4 { font-size: 1.25rem; font-weight: 600; }

p { margin-bottom: 1em; line-height: 1.9; }

ul, ol { list-style: none; }

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== 干扰标签区块 ===== */
.jammer-block {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
  padding: 0;
  margin: -1px;
  opacity: 0;
  pointer-events: none;
  user-select: none;
}

/* ===== 导航栏 ===== */
.site-header {
  background: var(--color-primary);
  padding: 0;
  z-index: 1000;
  position: relative;
}

.header-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 0;
}

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

.site-logo img {
  width: 44px;
  height: 44px;
  border-radius: 50%;
}

.site-logo .logo-text {
  font-family: var(--font-heading);
  font-size: 1.4rem;
  color: var(--color-accent);
  font-weight: 700;
  letter-spacing: 2px;
}

.main-nav { display: flex; align-items: center; }

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

.nav-list li a {
  color: var(--color-text-white);
  padding: 10px 18px;
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  transition: all var(--transition);
  display: block;
}

.nav-list li a:hover,
.nav-list li a.active {
  background: rgba(201, 169, 110, 0.2);
  color: var(--color-accent);
}

.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  color: var(--color-text-white);
  font-size: 1.6rem;
  cursor: pointer;
  padding: 8px;
}

/* ===== 面包屑导航 ===== */
.breadcrumb {
  padding: 16px 0;
  background: var(--color-bg-alt);
  border-bottom: 1px solid var(--color-border);
}

.breadcrumb-list {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.9rem;
  flex-wrap: wrap;
}

.breadcrumb-list li::after {
  content: "›";
  margin-left: 8px;
  color: var(--color-text-light);
}

.breadcrumb-list li:last-child::after { content: ""; }

.breadcrumb-list li:last-child a {
  color: var(--color-text-light);
  pointer-events: none;
}

/* ===== 轮播Banner ===== */
.hero-banner {
  position: relative;
  height: 560px;
  overflow: hidden;
  background: var(--color-primary);
}

.banner-slide {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  transition: opacity 0.8s ease;
  display: flex;
  align-items: center;
}

.banner-slide.active { opacity: 1; }

.banner-slide .banner-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: brightness(0.45);
}

.banner-content {
  position: relative;
  z-index: 2;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
  color: #fff;
}

.banner-content h1 {
  color: #fff;
  font-size: 2.8rem;
  margin-bottom: 16px;
  text-shadow: 0 2px 12px rgba(0,0,0,0.3);
}

.banner-content p {
  font-size: 1.15rem;
  max-width: 600px;
  opacity: 0.9;
  margin-bottom: 28px;
}

.banner-dots {
  position: absolute;
  bottom: 28px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 10px;
  z-index: 3;
}

.banner-dots .dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: rgba(255,255,255,0.4);
  cursor: pointer;
  transition: all var(--transition);
  border: none;
}

.banner-dots .dot.active {
  background: var(--color-accent);
  transform: scale(1.2);
}

/* ===== 通用按钮 ===== */
.btn {
  display: inline-block;
  padding: 12px 32px;
  border-radius: var(--radius-sm);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  border: none;
  text-align: center;
}

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

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

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

.btn-outline:hover {
  background: var(--color-accent);
  color: #fff;
}

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

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

/* ===== 通用区块 ===== */
.section {
  padding: 80px 0;
}

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

.section-dark h2,
.section-dark h3 {
  color: var(--color-accent-light);
}

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

.section-title {
  text-align: center;
  margin-bottom: 48px;
}

.section-title h2 {
  position: relative;
  display: inline-block;
  padding-bottom: 16px;
}

.section-title h2::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 3px;
  background: var(--color-accent);
  border-radius: 2px;
}

.section-title p {
  color: var(--color-text-light);
  font-size: 1.05rem;
  max-width: 680px;
  margin: 16px auto 0;
}

.section-dark .section-title p {
  color: rgba(255,255,255,0.7);
}

/* ===== 卡片网格 ===== */
.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.card {
  background: #fff;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
}

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

.card-img {
  width: 100%;
  height: 220px;
  object-fit: cover;
}

.card-body {
  padding: 24px;
}

.card-body h3 {
  font-size: 1.2rem;
  margin-bottom: 10px;
}

.card-body p {
  color: var(--color-text-light);
  font-size: 0.95rem;
}

.card-tag {
  display: inline-block;
  padding: 4px 12px;
  background: var(--color-accent-light);
  color: var(--color-accent-dark);
  border-radius: 20px;
  font-size: 0.8rem;
  margin-bottom: 12px;
}

/* ===== 数字内容孵化模块 ===== */
.incubation-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.incubation-item {
  text-align: center;
  padding: 40px 28px;
  background: #fff;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
}

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

.incubation-icon {
  width: 72px;
  height: 72px;
  margin: 0 auto 20px;
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-dark));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  color: #fff;
}

/* ===== 拍卖活动模块 ===== */
.auction-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
}

.auction-card {
  display: flex;
  background: #fff;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
}

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

.auction-card .auction-img {
  width: 240px;
  min-height: 200px;
  object-fit: cover;
  flex-shrink: 0;
}

.auction-card .auction-info {
  padding: 24px;
  flex: 1;
}

.auction-status {
  display: inline-block;
  padding: 4px 14px;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 600;
  margin-bottom: 10px;
}

.auction-status.live {
  background: #e8f5e9;
  color: var(--color-success);
}

.auction-status.upcoming {
  background: #fff8e1;
  color: var(--color-warning);
}

.auction-meta {
  display: flex;
  gap: 16px;
  margin-top: 12px;
  font-size: 0.9rem;
  color: var(--color-text-light);
}

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

/* ===== 用户评价模块 ===== */
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.testimonial-card {
  background: #fff;
  border-radius: var(--radius-md);
  padding: 32px;
  box-shadow: var(--shadow-sm);
  position: relative;
}

.testimonial-card::before {
  content: "\201C";
  font-size: 4rem;
  color: var(--color-accent-light);
  position: absolute;
  top: 12px;
  left: 24px;
  font-family: serif;
  line-height: 1;
}

.testimonial-text {
  font-style: italic;
  color: var(--color-text);
  margin-bottom: 20px;
  padding-top: 24px;
  line-height: 1.8;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 12px;
}

.testimonial-avatar {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  object-fit: cover;
}

.testimonial-name {
  font-weight: 600;
  font-size: 0.95rem;
}

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

/* ===== 最新动态模块 ===== */
.news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.news-card {
  background: #fff;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
}

.news-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.news-card .news-img {
  width: 100%;
  height: 200px;
  object-fit: cover;
}

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

.news-date {
  font-size: 0.85rem;
  color: var(--color-accent);
  margin-bottom: 8px;
}

.news-body h3 {
  font-size: 1.1rem;
  margin-bottom: 10px;
}

.news-body p {
  font-size: 0.92rem;
  color: var(--color-text-light);
}

/* ===== 页脚 ===== */
.site-footer {
  background: var(--color-primary);
  color: var(--color-text-white);
  padding: 60px 0 0;
}

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

.footer-brand .logo-text {
  font-family: var(--font-heading);
  font-size: 1.3rem;
  color: var(--color-accent);
  font-weight: 700;
  margin-bottom: 16px;
  display: block;
}

.footer-brand p {
  color: rgba(255,255,255,0.6);
  font-size: 0.92rem;
  line-height: 1.7;
}

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

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

.footer-col ul li a {
  color: rgba(255,255,255,0.6);
  font-size: 0.92rem;
  transition: color var(--transition);
}

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

.footer-social {
  display: flex;
  gap: 12px;
  margin-top: 16px;
}

.footer-social a {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(255,255,255,0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-white);
  transition: all var(--transition);
  font-size: 0.9rem;
}

.footer-social a:hover {
  background: var(--color-accent);
  color: #fff;
}

.footer-bottom {
  text-align: center;
  padding: 24px 0;
  font-size: 0.85rem;
  color: rgba(255,255,255,0.4);
}

/* ===== 内页通用 ===== */
.page-hero {
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  padding: 80px 0 60px;
  text-align: center;
  color: #fff;
}

.page-hero h1 {
  color: #fff;
  font-size: 2.4rem;
  margin-bottom: 12px;
}

.page-hero p {
  color: rgba(255,255,255,0.7);
  font-size: 1.1rem;
  max-width: 600px;
  margin: 0 auto;
}

.page-content {
  padding: 60px 0;
}

.page-content .content-block {
  margin-bottom: 48px;
}

.page-content .content-block h2 {
  margin-bottom: 20px;
}

.page-content .content-block p {
  color: var(--color-text);
  line-height: 2;
}

/* ===== 流程步骤 ===== */
.process-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin: 40px 0;
}

.step-item {
  text-align: center;
  padding: 32px 20px;
  background: #fff;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  position: relative;
}

.step-number {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--color-accent);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  font-weight: 700;
  margin: 0 auto 16px;
}

.step-item h4 { margin-bottom: 8px; }

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

/* ===== FAQ ===== */
.faq-list {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  background: #fff;
  border-radius: var(--radius-md);
  margin-bottom: 16px;
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

.faq-question {
  padding: 20px 28px;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: background var(--transition);
}

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

.faq-question::after {
  content: "+";
  font-size: 1.4rem;
  color: var(--color-accent);
  transition: transform var(--transition);
}

.faq-item.open .faq-question::after {
  content: "−";
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.3s ease;
}

.faq-item.open .faq-answer {
  max-height: 500px;
  padding: 0 28px 20px;
}

.faq-answer p {
  color: var(--color-text-light);
  line-height: 1.9;
}

/* ===== 拍卖详情页 ===== */
.auction-detail {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}

.auction-gallery img {
  width: 100%;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
}

.auction-detail-info h2 {
  margin-bottom: 16px;
}

.price-block {
  background: var(--color-bg-alt);
  padding: 24px;
  border-radius: var(--radius-md);
  margin: 20px 0;
}

.price-label {
  font-size: 0.9rem;
  color: var(--color-text-light);
  margin-bottom: 4px;
}

.price-value {
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-accent-dark);
  font-family: var(--font-heading);
}

.bid-info {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin: 20px 0;
}

.bid-info-item {
  padding: 16px;
  background: #fff;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
}

.bid-info-item .label {
  font-size: 0.85rem;
  color: var(--color-text-light);
}

.bid-info-item .value {
  font-size: 1.1rem;
  font-weight: 600;
  margin-top: 4px;
}

/* ===== 联系页面 ===== */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
}

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

.contact-form label {
  display: block;
  font-weight: 600;
  margin-bottom: 8px;
  font-size: 0.95rem;
}

.contact-form input,
.contact-form textarea,
.contact-form select {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 1rem;
  font-family: var(--font-body);
  transition: border-color var(--transition);
  background: #fff;
}

.contact-form input:focus,
.contact-form textarea:focus,
.contact-form select:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(201, 169, 110, 0.15);
}

.contact-form textarea {
  min-height: 140px;
  resize: vertical;
}

.contact-info-list {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.contact-info-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.contact-info-icon {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: var(--color-accent-light);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  flex-shrink: 0;
}

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

.contact-info-item p {
  color: var(--color-text-light);
  font-size: 0.92rem;
  margin-bottom: 0;
}

/* ===== 成功案例 ===== */
.case-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
}

.case-card {
  background: #fff;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
}

.case-card .case-img {
  width: 100%;
  height: 260px;
  object-fit: cover;
}

.case-card .case-body {
  padding: 28px;
  flex: 1;
}

.case-stats {
  display: flex;
  gap: 24px;
  margin-top: 16px;
}

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

.case-stat .stat-num {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-accent-dark);
  font-family: var(--font-heading);
}

.case-stat .stat-label {
  font-size: 0.8rem;
  color: var(--color-text-light);
}

/* ===== 动画效果 ===== */
.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

.slide-left {
  opacity: 0;
  transform: translateX(-30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

.slide-right {
  opacity: 0;
  transform: translateX(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* ===== 响应式设计 ===== */
@media (max-width: 1024px) {
  .card-grid,
  .incubation-grid,
  .testimonials-grid,
  .news-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

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

  .auction-detail {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  html { font-size: 15px; }

  h1 { font-size: 1.9rem; }
  h2 { font-size: 1.5rem; }

  .container { padding: 0 16px; }

  .mobile-menu-btn { display: block; }

  .main-nav {
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background: var(--color-primary);
    padding: 0;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease;
  }

  .main-nav.open {
    max-height: 400px;
  }

  .nav-list {
    flex-direction: column;
    padding: 16px;
    gap: 4px;
  }

  .hero-banner { height: 400px; }

  .banner-content h1 { font-size: 1.8rem; }

  .section { padding: 48px 0; }

  .card-grid,
  .incubation-grid,
  .testimonials-grid,
  .news-grid,
  .auction-list,
  .case-grid {
    grid-template-columns: 1fr;
  }

  .auction-card { flex-direction: column; }

  .auction-card .auction-img {
    width: 100%;
    height: 200px;
  }

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

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

  .process-steps {
    grid-template-columns: 1fr;
  }

  .bid-info {
    grid-template-columns: 1fr;
  }

  .page-hero { padding: 48px 0 40px; }
  .page-hero h1 { font-size: 1.8rem; }
}

@media (max-width: 480px) {
  html { font-size: 14px; }
  .hero-banner { height: 340px; }
  .banner-content h1 { font-size: 1.5rem; }
}

/* ===== 隐私政策页面 ===== */
.policy-content {
  max-width: 800px;
  margin: 0 auto;
}

.policy-content h2 {
  margin-top: 36px;
}

.policy-content h3 {
  margin-top: 24px;
}

.policy-content ul {
  list-style: disc;
  padding-left: 24px;
  margin-bottom: 16px;
}

.policy-content ul li {
  margin-bottom: 8px;
  line-height: 1.8;
}

/* ===== 移动端下载页面 ===== */
.download-section {
  text-align: center;
  padding: 80px 0;
}

.download-buttons {
  display: flex;
  gap: 16px;
  justify-content: center;
  margin-top: 32px;
  flex-wrap: wrap;
}

.download-btn {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px 32px;
  background: var(--color-primary);
  color: #fff;
  border-radius: var(--radius-md);
  font-size: 1rem;
  transition: all var(--transition);
}

.download-btn:hover {
  background: var(--color-secondary);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.download-btn .icon {
  font-size: 1.8rem;
}

/* ===== 数据统计展示 ===== */
.stats-bar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  padding: 48px 0;
}

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

.stat-block .stat-number {
  font-size: 2.4rem;
  font-weight: 700;
  color: var(--color-accent);
  font-family: var(--font-heading);
}

.stat-block .stat-text {
  font-size: 0.95rem;
  color: rgba(255,255,255,0.7);
  margin-top: 4px;
}

@media (max-width: 768px) {
  .stats-bar {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* ===== 懒加载图片 ===== */
img[loading="lazy"] {
  opacity: 0;
  transition: opacity 0.5s ease;
}

img[loading="lazy"].loaded,
img.loaded {
  opacity: 1;
}

/* ===== 合作伙伴 ===== */
.partners-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 48px;
  flex-wrap: wrap;
  padding: 32px 0;
}

.partners-row img {
  height: 48px;
  opacity: 0.5;
  transition: opacity var(--transition);
  filter: grayscale(100%);
}

.partners-row img:hover {
  opacity: 1;
  filter: grayscale(0);
}