:root {
  --brand-primary: #ff6b35;
  --brand-secondary: #f7c948;
  --brand-accent: #ff3d71;
  --brand-dark: #1a1a2e;
  --brand-light: #f8f9fa;
  --text-primary: #2d2d2d;
  --text-secondary: #6c757d;
  --bg-body: #ffffff;
  --bg-card: #ffffff;
  --bg-glass: rgba(255, 255, 255, 0.72);
  --bg-glass-strong: rgba(255, 255, 255, 0.88);
  --border-color: #e9ecef;
  --border-glass: rgba(255, 255, 255, 0.6);
  --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 12px 40px rgba(255, 107, 53, 0.18);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --gradient-brand: linear-gradient(135deg, #ff6b35 0%, #f7c948 100%);
  --gradient-hero: linear-gradient(135deg, #ff6b35 0%, #ff3d71 45%, #f7c948 100%);
  --gradient-glow: linear-gradient(135deg, rgba(255, 107, 53, 0.12), rgba(247, 201, 72, 0.08));
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-smooth: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

body.dark-mode {
  --brand-primary: #ff8c5a;
  --brand-secondary: #ffd966;
  --brand-accent: #ff6b9d;
  --brand-dark: #0d0d1a;
  --brand-light: #1a1a2e;
  --text-primary: #e9ecef;
  --text-secondary: #adb5bd;
  --bg-body: #12121f;
  --bg-card: #1e1e2f;
  --bg-glass: rgba(30, 30, 47, 0.72);
  --bg-glass-strong: rgba(30, 30, 47, 0.9);
  --border-color: #2d2d44;
  --border-glass: rgba(255, 255, 255, 0.08);
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 12px 40px rgba(255, 140, 90, 0.15);
  --gradient-hero: linear-gradient(135deg, #ff8c5a 0%, #ff6b9d 45%, #ffd966 100%);
  --gradient-glow: linear-gradient(135deg, rgba(255, 140, 90, 0.1), rgba(255, 217, 102, 0.06));
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  background-color: var(--bg-body);
  color: var(--text-primary);
  line-height: 1.7;
  transition: background-color 0.35s ease, color 0.35s ease;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a:hover {
  color: var(--brand-secondary);
}

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

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* ========== 吸顶导航 - 毛玻璃 ========== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--bg-glass);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid var(--border-glass);
  box-shadow: var(--shadow-sm);
  transition: background 0.35s ease, border-color 0.35s ease, box-shadow 0.35s ease;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--brand-primary);
  transition: transform var(--transition-fast);
}

.logo:hover {
  transform: scale(1.03);
}

.logo svg {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  transition: box-shadow var(--transition-fast);
}

.logo:hover svg {
  box-shadow: 0 0 0 3px rgba(255, 107, 53, 0.2);
}

.logo span {
  color: var(--text-primary);
}

.main-nav {
  display: flex;
  gap: 24px;
  list-style: none;
}

.main-nav a {
  color: var(--text-primary);
  font-weight: 500;
  font-size: 0.95rem;
  padding: 6px 0;
  border-bottom: 2px solid transparent;
  transition: all var(--transition-fast);
  position: relative;
}

.main-nav a::after {
  content: "";
  position: absolute;
  bottom: -2px;
  left: 50%;
  width: 0;
  height: 2px;
  background: var(--gradient-brand);
  transition: width var(--transition-fast), left var(--transition-fast);
  border-radius: 2px;
}

.main-nav a:hover {
  color: var(--brand-primary);
}

.main-nav a:hover::after {
  width: 100%;
  left: 0;
}

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

.search-box {
  display: flex;
  align-items: center;
  background: var(--bg-glass);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-radius: 20px;
  padding: 6px 14px;
  border: 1px solid var(--border-glass);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.search-box:focus-within {
  border-color: var(--brand-primary);
  box-shadow: 0 0 0 3px rgba(255, 107, 53, 0.12);
}

.search-box input {
  border: none;
  background: transparent;
  outline: none;
  color: var(--text-primary);
  font-size: 0.9rem;
  width: 140px;
}

.search-box input::placeholder {
  color: var(--text-secondary);
  opacity: 0.7;
}

.search-box button {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--brand-primary);
  font-size: 1rem;
  transition: transform var(--transition-fast);
}

.search-box button:hover {
  transform: scale(1.15);
}

.theme-toggle {
  background: var(--bg-glass);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid var(--border-glass);
  border-radius: 50%;
  width: 40px;
  height: 40px;
  cursor: pointer;
  font-size: 1.2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
}

.theme-toggle:hover {
  background: var(--brand-secondary);
  transform: rotate(20deg) scale(1.05);
  box-shadow: 0 0 0 3px rgba(247, 201, 72, 0.25);
}

.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  font-size: 1.6rem;
  cursor: pointer;
  color: var(--text-primary);
  transition: transform var(--transition-fast);
}

.mobile-menu-btn:hover {
  transform: scale(1.1);
}

/* ========== 面包屑 ========== */
.breadcrumb {
  padding: 16px 0;
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.breadcrumb a {
  color: var(--text-secondary);
  transition: color var(--transition-fast);
}

.breadcrumb a:hover {
  color: var(--brand-primary);
}

.breadcrumb span {
  margin: 0 6px;
}

/* ========== Banner 渐变轮播 ========== */
.banner-section {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-xl);
  margin-bottom: 40px;
  background: var(--gradient-hero);
  background-size: 300% 300%;
  animation: gradientShift 12s ease infinite;
  min-height: 320px;
  box-shadow: var(--shadow-lg);
}

@keyframes gradientShift {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

.banner-section::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 20% 30%, rgba(255, 255, 255, 0.18), transparent 50%),
              radial-gradient(circle at 80% 70%, rgba(255, 255, 255, 0.1), transparent 45%);
  pointer-events: none;
  z-index: 1;
}

.banner-slides {
  display: flex;
  transition: transform 0.55s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  z-index: 2;
}

.banner-slide {
  min-width: 100%;
  padding: 60px 40px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  color: #fff;
}

.banner-slide h2 {
  font-size: 2rem;
  margin-bottom: 12px;
  font-weight: 700;
  text-shadow: 0 2px 12px rgba(0, 0, 0, 0.15);
  letter-spacing: -0.02em;
}

.banner-slide p {
  font-size: 1.05rem;
  opacity: 0.95;
  max-width: 600px;
  text-shadow: 0 1px 6px rgba(0, 0, 0, 0.1);
}

.banner-dots {
  position: absolute;
  bottom: 18px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 8px;
  z-index: 3;
}

.banner-dots button {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  border: none;
  background: rgba(255, 255, 255, 0.5);
  cursor: pointer;
  transition: background var(--transition-fast), width var(--transition-fast), border-radius var(--transition-fast);
}

.banner-dots button:hover {
  background: rgba(255, 255, 255, 0.8);
}

.banner-dots button.active {
  background: #fff;
  width: 26px;
  border-radius: 6px;
}

/* ========== 数字动画 ========== */
.stats-section {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 20px;
  margin-bottom: 48px;
}

.stat-card {
  background: var(--bg-glass);
  backdrop-filter: blur(16px) saturate(160%);
  -webkit-backdrop-filter: blur(16px) saturate(160%);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  padding: 24px 16px;
  text-align: center;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-smooth), box-shadow var(--transition-smooth), border-color var(--transition-smooth);
  position: relative;
  overflow: hidden;
}

.stat-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-brand);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-smooth);
}

.stat-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: var(--brand-primary);
}

.stat-card:hover::before {
  transform: scaleX(1);
}

.stat-number {
  font-size: 2rem;
  font-weight: 800;
  color: var(--brand-primary);
  display: block;
  letter-spacing: -0.02em;
  font-variant-numeric: tabular-nums;
}

.stat-label {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-top: 4px;
}

/* ========== 通用区块 ========== */
.section {
  margin-bottom: 56px;
}

.section-title {
  font-size: 1.6rem;
  font-weight: 700;
  margin-bottom: 24px;
  padding-left: 14px;
  border-left: 4px solid var(--brand-primary);
  color: var(--text-primary);
  letter-spacing: -0.01em;
  position: relative;
}

.section-title::after {
  content: "";
  position: absolute;
  left: -4px;
  top: 0;
  bottom: 0;
  width: 4px;
  background: var(--gradient-brand);
  border-radius: 2px;
}

.section-subtitle {
  font-size: 1.1rem;
  font-weight: 600;
  margin: 24px 0 12px;
  color: var(--text-primary);
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}

.card {
  background: var(--bg-glass);
  backdrop-filter: blur(16px) saturate(160%);
  -webkit-backdrop-filter: blur(16px) saturate(160%);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-smooth), box-shadow var(--transition-smooth), border-color var(--transition-smooth);
  position: relative;
  overflow: hidden;
}

.card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-brand);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-smooth);
}

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

.card:hover::before {
  transform: scaleX(1);
}

.card h3 {
  font-size: 1.15rem;
  margin-bottom: 10px;
  color: var(--brand-primary);
  transition: color var(--transition-fast);
}

.card:hover h3 {
  color: var(--brand-secondary);
}

.card p {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

.card-icon {
  width: 48px;
  height: 48px;
  margin-bottom: 16px;
  transition: transform var(--transition-smooth);
}

.card:hover .card-icon {
  transform: scale(1.1) rotate(-3deg);
}

/* ========== 文章列表 ========== */
.article-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.article-item {
  background: var(--bg-glass);
  backdrop-filter: blur(16px) saturate(160%);
  -webkit-backdrop-filter: blur(16px) saturate(160%);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  padding: 20px 24px;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-smooth), box-shadow var(--transition-smooth), border-color var(--transition-smooth);
  position: relative;
  overflow: hidden;
}

.article-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--gradient-brand);
  transform: scaleY(0);
  transform-origin: top;
  transition: transform var(--transition-smooth);
}

.article-item:hover {
  transform: translateX(6px);
  box-shadow: var(--shadow-md);
  border-color: var(--brand-primary);
}

.article-item:hover::before {
  transform: scaleY(1);
}

.article-item h4 {
  font-size: 1.1rem;
  margin-bottom: 8px;
  color: var(--text-primary);
  transition: color var(--transition-fast);
}

.article-item:hover h4 {
  color: var(--brand-primary);
}

.article-meta {
  font-size: 0.8rem;
  color: var(--text-secondary);
  margin-bottom: 8px;
}

.article-item p {
  font-size: 0.92rem;
  color: var(--text-secondary);
  margin-bottom: 10px;
}

.read-more {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--brand-primary);
  transition: letter-spacing var(--transition-fast), color var(--transition-fast);
  display: inline-block;
}

.read-more:hover {
  color: var(--brand-secondary);
  letter-spacing: 0.5px;
}

/* ========== FAQ ========== */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.faq-item {
  background: var(--bg-glass);
  backdrop-filter: blur(16px) saturate(160%);
  -webkit-backdrop-filter: blur(16px) saturate(160%);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.faq-item:hover {
  border-color: var(--brand-primary);
  box-shadow: var(--shadow-md);
}

.faq-item.open {
  border-color: var(--brand-primary);
  box-shadow: var(--shadow-md);
}

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

.faq-question:hover {
  background: var(--gradient-glow);
  color: var(--brand-primary);
}

.faq-question::after {
  content: "+";
  font-size: 1.3rem;
  color: var(--brand-primary);
  transition: transform var(--transition-smooth);
  flex-shrink: 0;
  margin-left: 12px;
}

.faq-item.open .faq-question::after {
  content: "−";
  transform: rotate(180deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.45s cubic-bezier(0.4, 0, 0.2, 1), padding 0.35s ease;
  padding: 0 20px;
}

.faq-item.open .faq-answer {
  max-height: 500px;
  padding: 0 20px 16px;
}

.faq-answer p {
  font-size: 0.93rem;
  color: var(--text-secondary);
  line-height: 1.8;
}

/* ========== HowTo ========== */
.howto-steps {
  display: flex;
  flex-direction: column;
  gap: 16px;
  counter-reset: step;
}

.howto-step {
  background: var(--bg-glass);
  backdrop-filter: blur(16px) saturate(160%);
  -webkit-backdrop-filter: blur(16px) saturate(160%);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  padding: 20px 24px;
  box-shadow: var(--shadow-sm);
  position: relative;
  padding-left: 68px;
  transition: transform var(--transition-smooth), box-shadow var(--transition-smooth), border-color var(--transition-smooth);
}

.howto-step:hover {
  transform: translateX(6px);
  box-shadow: var(--shadow-md);
  border-color: var(--brand-primary);
}

.howto-step::before {
  counter-increment: step;
  content: counter(step);
  position: absolute;
  left: 20px;
  top: 20px;
  width: 32px;
  height: 32px;
  background: var(--gradient-brand);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.95rem;
  box-shadow: 0 2px 8px rgba(255, 107, 53, 0.3);
  transition: transform var(--transition-fast);
}

.howto-step:hover::before {
  transform: scale(1.1);
}

.howto-step h4 {
  font-size: 1.05rem;
  margin-bottom: 6px;
  color: var(--text-primary);
}

.howto-step p {
  font-size: 0.93rem;
  color: var(--text-secondary);
}

/* ========== 关于我们 / 联系方式 ========== */
.info-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 24px;
}

.info-card {
  background: var(--bg-glass);
  backdrop-filter: blur(16px) saturate(160%);
  -webkit-backdrop-filter: blur(16px) saturate(160%);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-smooth), box-shadow var(--transition-smooth), border-color var(--transition-smooth);
}

.info-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--brand-primary);
}

.info-card h4 {
  font-size: 1.05rem;
  margin-bottom: 10px;
  color: var(--brand-primary);
}

.info-card p,
.info-card address {
  font-size: 0.93rem;
  color: var(--text-secondary);
  font-style: normal;
  line-height: 1.8;
}

.info-card ul {
  list-style: none;
}

.info-card ul li a {
  color: var(--text-secondary);
  transition: color var(--transition-fast), padding-left var(--transition-fast);
  display: inline-block;
}

.info-card ul li a:hover {
  color: var(--brand-primary);
  padding-left: 4px;
}

/* ========== 页脚 ========== */
.site-footer {
  background: var(--brand-dark);
  color: #ccc;
  padding: 48px 0 24px;
  margin-top: 40px;
  position: relative;
  overflow: hidden;
}

.site-footer::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-brand);
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 32px;
  margin-bottom: 32px;
}

.footer-col h4 {
  color: #fff;
  font-size: 1rem;
  margin-bottom: 14px;
  position: relative;
  padding-bottom: 8px;
}

.footer-col h4::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 24px;
  height: 2px;
  background: var(--gradient-brand);
  border-radius: 2px;
}

.footer-col ul {
  list-style: none;
}

.footer-col li {
  margin-bottom: 8px;
}

.footer-col a {
  color: #aaa;
  font-size: 0.9rem;
  transition: color var(--transition-fast), padding-left var(--transition-fast);
  display: inline-block;
}

.footer-col a:hover {
  color: var(--brand-secondary);
  padding-left: 4px;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 20px;
  text-align: center;
  font-size: 0.85rem;
  color: #888;
}

/* ========== 返回顶部 ========== */
.back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--gradient-brand);
  color: #fff;
  border: none;
  font-size: 1.3rem;
  cursor: pointer;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-smooth), visibility var(--transition-smooth), transform var(--transition-smooth), box-shadow var(--transition-smooth);
  z-index: 999;
  display: flex;
  align-items: center;
  justify-content: center;
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
}

.back-to-top:hover {
  transform: translateY(-6px) scale(1.08);
  box-shadow: 0 16px 48px rgba(255, 107, 53, 0.35);
}

/* ========== 滚动动画 ========== */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s cubic-bezier(0.4, 0, 0.2, 1), transform 0.7s cubic-bezier(0.4, 0, 0.2, 1);
  will-change: opacity, transform;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ========== 内部锚点导航 ========== */
.anchor-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 28px;
}

.anchor-nav a {
  font-size: 0.85rem;
  padding: 6px 14px;
  border-radius: 20px;
  background: var(--bg-glass);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid var(--border-glass);
  color: var(--text-primary);
  transition: all var(--transition-fast);
}

.anchor-nav a:hover {
  background: var(--gradient-brand);
  color: #fff;
  border-color: var(--brand-primary);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(255, 107, 53, 0.25);
}

/* ========== 客户评价 ========== */
.testimonial-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}

.testimonial-card {
  background: var(--bg-glass);
  backdrop-filter: blur(16px) saturate(160%);
  -webkit-backdrop-filter: blur(16px) saturate(160%);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-smooth), box-shadow var(--transition-smooth), border-color var(--transition-smooth);
  position: relative;
  overflow: hidden;
}

.testimonial-card::before {
  content: "\201C";
  position: absolute;
  top: 8px;
  right: 20px;
  font-size: 4rem;
  color: var(--brand-primary);
  opacity: 0.12;
  font-family: Georgia, serif;
  line-height: 1;
}

.testimonial-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: var(--brand-primary);
}

.testimonial-card blockquote {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.8;
  font-style: italic;
  margin-bottom: 14px;
}

.testimonial-author {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--brand-primary);
}

/* ========== 图片懒加载占位 ========== */
.lazy-img {
  background: var(--gradient-glow);
  border-radius: var(--radius-sm);
  animation: shimmer 1.8s infinite;
}

@keyframes shimmer {
  0% { opacity: 0.6; }
  50% { opacity: 1; }
  100% { opacity: 0.6; }
}

/* ========== 团队信息 ========== */
.team-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 20px;
}

.team-member {
  text-align: center;
  background: var(--bg-glass);
  backdrop-filter: blur(16px) saturate(160%);
  -webkit-backdrop-filter: blur(16px) saturate(160%);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 24px 16px;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-smooth), box-shadow var(--transition-smooth), border-color var(--transition-smooth);
}

.team-member:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: var(--brand-primary);
}

.team-member svg {
  width: 64px;
  height: 64px;
  margin: 0 auto 12px;
  transition: transform var(--transition-smooth);
}

.team-member:hover svg {
  transform: scale(1.1);
}

.team-member h4 {
  font-size: 1rem;
  margin-bottom: 4px;
}

.team-member p {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

/* ========== 版权与政策 ========== */
.legal-section {
  background: var(--gradient-glow);
  backdrop-filter: blur(16px) saturate(160%);
  -webkit-backdrop-filter: blur(16px) saturate(160%);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 28px;
  margin-bottom: 40px;
  transition: box-shadow var(--transition-smooth);
}

.legal-section:hover {
  box-shadow: var(--shadow-md);
}

.legal-section h3 {
  font-size: 1.1rem;
  margin-bottom: 12px;
  color: var(--text-primary);
  position: relative;
  padding-left: 12px;
}

.legal-section h3::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 4px;
  height: 16px;
  background: var(--gradient-brand);
  border-radius: 2px;
}

.legal-section p {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 10px;
}

/* ========== 响应式 - 平板 ========== */
@media (max-width: 992px) {
  .main-nav {
    gap: 16px;
  }

  .main-nav a {
    font-size: 0.88rem;
  }

  .search-box input {
    width: 100px;
  }
}

/* ========== 响应式 - 手机 ========== */
@media (max-width: 768px) {
  .main-nav {
    display: none;
    position: absolute;
    top: 68px;
    left: 0;
    right: 0;
    background: var(--bg-glass-strong);
    backdrop-filter: blur(24px) saturate(180%);
    -webkit-backdrop-filter: blur(24px) saturate(180%);
    flex-direction: column;
    padding: 20px;
    gap: 16px;
    border-bottom: 1px solid var(--border-color);
    box-shadow: var(--shadow-md);
    animation: slideDown 0.3s ease;
  }

  @keyframes slideDown {
    from {
      opacity: 0;
      transform: translateY(-10px);
    }
    to {
      opacity: 1;
      transform: translateY(0);
    }
  }

  .main-nav.open {
    display: flex;
  }

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

  .search-box {
    display: none;
  }

  .banner-slide h2 {
    font-size: 1.4rem;
  }

  .banner-slide p {
    font-size: 0.95rem;
  }

  .banner-slide {
    padding: 48px 24px;
  }

  .section-title {
    font-size: 1.3rem;
  }

  .stat-number {
    font-size: 1.6rem;
  }

  .container {
    padding: 0 16px;
  }

  .back-to-top {
    bottom: 20px;
    right: 20px;
    width: 42px;
    height: 42px;
  }

  .howto-step {
    padding-left: 58px;
  }

  .howto-step::before {
    left: 14px;
    width: 28px;
    height: 28px;
    font-size: 0.85rem;
  }
}

/* ========== 响应式 - 小手机 ========== */
@media (max-width: 480px) {
  .header-inner {
    height: 60px;
  }

  .logo {
    font-size: 1.15rem;
  }

  .logo svg {
    width: 30px;
    height: 30px;
  }

  .main-nav {
    top: 60px;
  }

  .banner-slide h2 {
    font-size: 1.2rem;
  }

  .banner-slide p {
    font-size: 0.88rem;
  }

  .stats-section {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }

  .stat-card {
    padding: 18px 12px;
  }

  .stat-number {
    font-size: 1.4rem;
  }

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

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

/* ========== 无障碍与减少动画 ========== */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}

/* ========== 滚动条美化 ========== */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-body);
}

::-webkit-scrollbar-thumb {
  background: var(--brand-primary);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--brand-secondary);
}

/* ========== 选中文本 ========== */
::selection {
  background: var(--brand-primary);
  color: #fff;
}

/* ========== 焦点可见 ========== */
:focus-visible {
  outline: 2px solid var(--brand-primary);
  outline-offset: 2px;
  border-radius: 4px;
}

/* ========== 打印样式 ========== */
@media print {
  .site-header,
  .back-to-top,
  .banner-section,
  .stats-section,
  .anchor-nav {
    display: none;
  }

  body {
    background: #fff;
    color: #000;
  }

  .card,
  .article-item,
  .faq-item {
    box-shadow: none;
    border: 1px solid #ccc;
  }
}