```css
:root {
  --primary: #0f2b3d;
  --primary-light: #1e4a6b;
  --accent: #e8b84b;
  --accent-dark: #d4a032;
  --bg: #f8fafc;
  --surface: #ffffff;
  --text: #1e293b;
  --text-light: #475569;
  --border: #e2e8f0;
  --shadow: 0 4px 20px rgba(15, 43, 61, 0.08);
  --shadow-lg: 0 12px 40px rgba(15, 43, 61, 0.12);
  --radius: 12px;
  --radius-lg: 20px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.6s cubic-bezier(0.4, 0, 0.2, 1);
  --glass-bg: rgba(255, 255, 255, 0.75);
  --glass-border: rgba(255, 255, 255, 0.3);
  --glass-blur: 16px;
}

* {
  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", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial, sans-serif;
  background-color: var(--bg);
  color: var(--text);
  line-height: 1.75;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  transition: background-color var(--transition), color var(--transition);
}

body.dark-mode {
  --primary: #e8b84b;
  --primary-light: #f0c96a;
  --accent: #0f2b3d;
  --accent-dark: #1e4a6b;
  --bg: #0f172a;
  --surface: #1e293b;
  --text: #e2e8f0;
  --text-light: #94a3b8;
  --border: #334155;
  --shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.5);
  --glass-bg: rgba(30, 41, 59, 0.75);
  --glass-border: rgba(255, 255, 255, 0.08);
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ========== 头部导航 ========== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur)) saturate(180%);
  -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(180%);
  border-bottom: 1px solid var(--border);
  transition: background var(--transition), box-shadow var(--transition), border-color var(--transition);
}

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

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--text);
  text-decoration: none;
  letter-spacing: -0.5px;
  transition: color var(--transition);
}

.logo svg {
  width: 36px;
  height: 36px;
  flex-shrink: 0;
  transition: transform var(--transition);
}

.logo:hover svg {
  transform: rotate(-8deg) scale(1.08);
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 4px;
  list-style: none;
}

.nav-menu a {
  display: block;
  padding: 8px 14px;
  color: var(--text-light);
  text-decoration: none;
  font-size: 0.94rem;
  font-weight: 500;
  border-radius: 8px;
  transition: color var(--transition), background var(--transition), transform var(--transition);
  white-space: nowrap;
  position: relative;
}

.nav-menu a::after {
  content: "";
  position: absolute;
  bottom: 4px;
  left: 50%;
  width: 0;
  height: 2px;
  background: var(--accent);
  border-radius: 2px;
  transition: width var(--transition), left var(--transition);
}

.nav-menu a:hover,
.nav-menu a:focus {
  color: var(--primary);
  background: rgba(15, 43, 61, 0.06);
  transform: translateY(-1px);
}

.nav-menu a:hover::after {
  width: 40%;
  left: 30%;
}

body.dark-mode .nav-menu a:hover,
body.dark-mode .nav-menu a:focus {
  background: rgba(232, 184, 75, 0.12);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.search-box {
  display: flex;
  align-items: center;
  background: var(--glass-bg);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 0 4px 0 14px;
  transition: border-color var(--transition), box-shadow var(--transition), background var(--transition);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.search-box:focus-within {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(15, 43, 61, 0.1);
}

body.dark-mode .search-box:focus-within {
  box-shadow: 0 0 0 3px rgba(232, 184, 75, 0.15);
}

.search-box input {
  border: none;
  background: transparent;
  padding: 8px 6px 8px 0;
  font-size: 0.9rem;
  color: var(--text);
  outline: none;
  width: 150px;
  transition: width var(--transition);
}

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

.search-box button {
  background: var(--primary);
  border: none;
  border-radius: 50%;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background var(--transition), transform var(--transition);
  flex-shrink: 0;
}

.search-box button:hover {
  background: var(--primary-light);
  transform: scale(1.08);
}

.search-box button svg {
  width: 16px;
  height: 16px;
  fill: #fff;
}

.theme-toggle {
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 50%;
  width: 38px;
  height: 38px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background var(--transition), border-color var(--transition), transform var(--transition);
  flex-shrink: 0;
}

.theme-toggle:hover {
  background: var(--bg);
  transform: rotate(20deg) scale(1.05);
}

.theme-toggle svg {
  width: 20px;
  height: 20px;
  fill: var(--text-light);
  transition: fill var(--transition), transform var(--transition);
}

.theme-toggle:hover svg {
  fill: var(--accent);
}

.mobile-menu-btn {
  display: none;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 8px;
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background var(--transition), border-color var(--transition);
}

.mobile-menu-btn:hover {
  background: var(--bg);
}

.mobile-menu-btn svg {
  width: 22px;
  height: 22px;
  fill: var(--text);
}

/* ========== 面包屑 ========== */
.breadcrumb {
  padding: 16px 0;
  font-size: 0.88rem;
  color: var(--text-light);
}

.breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  list-style: none;
  gap: 6px;
}

.breadcrumb li {
  display: flex;
  align-items: center;
  gap: 6px;
}

.breadcrumb li::after {
  content: "›";
  color: var(--text-light);
  opacity: 0.5;
}

.breadcrumb li:last-child::after {
  display: none;
}

.breadcrumb a {
  color: var(--text-light);
  text-decoration: none;
  transition: color var(--transition);
}

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

.breadcrumb [aria-current="page"] {
  color: var(--text);
  font-weight: 500;
}

/* ========== Hero 首屏 ========== */
.hero {
  background: linear-gradient(135deg, #0f2b3d 0%, #1e4a6b 50%, #2d5a7b 100%);
  color: #fff;
  padding: 80px 0 70px;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  top: -50%;
  right: -10%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(232, 184, 75, 0.15) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
  animation: float 8s ease-in-out infinite;
}

.hero::after {
  content: "";
  position: absolute;
  bottom: -30%;
  left: -5%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(232, 184, 75, 0.08) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
  animation: float 10s ease-in-out infinite reverse;
}

@keyframes float {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(-20px, 20px) scale(1.05); }
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 780px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(232, 184, 75, 0.18);
  color: var(--accent);
  padding: 6px 16px;
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 20px;
  border: 1px solid rgba(232, 184, 75, 0.3);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  animation: fadeInDown 0.8s ease both;
}

@keyframes fadeInDown {
  from { opacity: 0; transform: translateY(-20px); }
  to { opacity: 1; transform: translateY(0); }
}

.hero h1 {
  font-size: 2.8rem;
  font-weight: 800;
  line-height: 1.25;
  margin-bottom: 20px;
  letter-spacing: -1px;
  animation: fadeInUp 0.8s ease 0.1s both;
}

.hero h1 span {
  color: var(--accent);
  position: relative;
}

.hero h1 span::after {
  content: "";
  position: absolute;
  bottom: 4px;
  left: 0;
  right: 0;
  height: 8px;
  background: rgba(232, 184, 75, 0.2);
  border-radius: 4px;
  z-index: -1;
}

.hero p {
  font-size: 1.1rem;
  color: rgba(255, 255, 255, 0.82);
  max-width: 640px;
  margin-bottom: 32px;
  line-height: 1.8;
  animation: fadeInUp 0.8s ease 0.2s both;
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  animation: fadeInUp 0.8s ease 0.3s both;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 28px;
  border-radius: 10px;
  font-size: 0.98rem;
  font-weight: 600;
  text-decoration: none;
  transition: background var(--transition), color var(--transition), transform var(--transition), box-shadow var(--transition), border-color var(--transition);
  cursor: pointer;
  border: none;
  font-family: inherit;
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  background: rgba(255, 255, 255, 0.2);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  transition: width 0.5s ease, height 0.5s ease;
}

.btn:hover::before {
  width: 300px;
  height: 300px;
}

.btn-primary {
  background: var(--accent);
  color: #0f2b3d;
  box-shadow: 0 4px 16px rgba(232, 184, 75, 0.3);
}

.btn-primary:hover {
  background: var(--accent-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(232, 184, 75, 0.45);
}

.btn-outline {
  background: transparent;
  color: #fff;
  border: 1.5px solid rgba(255, 255, 255, 0.35);
}

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.6);
  transform: translateY(-2px);
}

/* ========== 数据统计 ========== */
.stats-bar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 48px;
  position: relative;
  z-index: 1;
}

.stat-item {
  text-align: center;
  padding: 20px 12px;
  background: rgba(255, 255, 255, 0.07);
  border-radius: var(--radius);
  border: 1px solid rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  transition: background var(--transition), transform var(--transition), border-color var(--transition);
}

.stat-item:hover {
  background: rgba(255, 255, 255, 0.12);
  transform: translateY(-4px);
  border-color: rgba(232, 184, 75, 0.3);
}

.stat-number {
  font-size: 2rem;
  font-weight: 800;
  color: var(--accent);
  line-height: 1.2;
  font-variant-numeric: tabular-nums;
}

.stat-label {
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.7);
  margin-top: 4px;
}

/* ========== 区块通用 ========== */
.section {
  padding: 72px 0;
}

.section-alt {
  background: var(--surface);
  transition: background var(--transition);
}

.section-header {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 48px;
}

.section-header h2 {
  font-size: 2rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 12px;
  letter-spacing: -0.5px;
  position: relative;
  display: inline-block;
}

.section-header h2::after {
  content: "";
  display: block;
  width: 48px;
  height: 3px;
  background: var(--accent);
  border-radius: 3px;
  margin: 12px auto 0;
}

.section-header p {
  font-size: 1rem;
  color: var(--text-light);
  line-height: 1.8;
}

/* ========== 轮播 Banner ========== */
.banner-carousel {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  background: var(--surface);
  margin-bottom: 48px;
  transition: box-shadow var(--transition);
}

.banner-carousel:hover {
  box-shadow: 0 20px 60px rgba(15, 43, 61, 0.2);
}

.carousel-track {
  display: flex;
  transition: transform var(--transition-slow);
}

.carousel-slide {
  min-width: 100%;
  position: relative;
  overflow: hidden;
}

.carousel-slide svg {
  width: 100%;
  height: auto;
  display: block;
  transition: transform 0.8s ease;
}

.banner-carousel:hover .carousel-slide svg {
  transform: scale(1.03);
}

.carousel-caption {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 60px 40px 32px;
  background: linear-gradient(transparent, rgba(15, 43, 61, 0.9));
  color: #fff;
}

.carousel-caption h3 {
  font-size: 1.4rem;
  font-weight: 700;
  margin-bottom: 6px;
  text-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

.carousel-caption p {
  font-size: 0.92rem;
  opacity: 0.85;
  max-width: 600px;
}

.carousel-dots {
  position: absolute;
  bottom: 18px;
  right: 24px;
  display: flex;
  gap: 8px;
  z-index: 2;
}

.carousel-dots button {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  border: none;
  background: rgba(255, 255, 255, 0.45);
  cursor: pointer;
  transition: background var(--transition), width var(--transition), border-radius var(--transition);
  padding: 0;
}

.carousel-dots button:hover {
  background: rgba(255, 255, 255, 0.75);
}

.carousel-dots button.active {
  background: var(--accent);
  width: 26px;
  border-radius: 6px;
}

/* ========== 卡片网格 ========== */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 24px;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition), background var(--transition);
  position: relative;
  overflow: hidden;
}

.card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--primary-light));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition);
}

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

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

.card-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
  background: rgba(15, 43, 61, 0.08);
  transition: background var(--transition), transform var(--transition);
}

.card:hover .card-icon {
  transform: scale(1.1) rotate(-5deg);
  background: rgba(232, 184, 75, 0.15);
}

body.dark-mode .card-icon {
  background: rgba(232, 184, 75, 0.12);
}

.card-icon svg {
  width: 24px;
  height: 24px;
  fill: var(--primary);
  transition: fill var(--transition);
}

.card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 10px;
  transition: color var(--transition);
}

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

.card p {
  font-size: 0.92rem;
  color: var(--text-light);
  line-height: 1.75;
}

/* ========== 文章列表 ========== */
.article-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 24px;
}

.article-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 26px;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition), background var(--transition);
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
}

.article-card::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--primary-light));
  transform: scaleX(0);
  transform-origin: right;
  transition: transform var(--transition);
}

.article-card:hover::after {
  transform: scaleX(1);
}

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

.article-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.82rem;
  color: var(--text-light);
  margin-bottom: 12px;
}

.article-tag {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 6px;
  background: rgba(15, 43, 61, 0.07);
  color: var(--primary);
  font-weight: 600;
  font-size: 0.78rem;
  transition: background var(--transition), color var(--transition);
}

body.dark-mode .article-tag {
  background: rgba(232, 184, 75, 0.12);
}

.article-card:hover .article-tag {
  background: var(--accent);
  color: #0f2b3d;
}

.article-card h3 {
  font-size: 1.08rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 10px;
  line-height: 1.45;
  transition: color var(--transition);
}

.article-card:hover h3 {
  color: var(--primary);
}

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

.read-more {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--primary);
  font-weight: 600;
  font-size: 0.9rem;
  text-decoration: none;
  transition: gap var(--transition), color var(--transition);
  align-self: flex-start;
}

.read-more:hover {
  gap: 10px;
  color: var(--accent-dark);
}

.read-more svg {
  width: 16px;
  height: 16px;
  fill: currentColor;
  transition: transform var(--transition);
}

.read-more:hover svg {
  transform: translateX(3px);
}

/* ========== FAQ ========== */
.faq-list {
  max-width: 860px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.faq-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color var(--transition), box-shadow var(--transition), background var(--transition);
}

.faq-item:hover {
  border-color: rgba(15, 43, 61, 0.2);
}

.faq-item.active {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(15, 43, 61, 0.06);
}

body.dark-mode .faq-item.active {
  box-shadow: 0 0 0 3px rgba(232, 184, 75, 0.1);
}

.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 24px;
  background: transparent;
  border: none;
  cursor: pointer;
  text-align: left;
  font-family: inherit;
  font-size: 1rem;
  font-weight: 600;
  color: var(--text);
  transition: color var(--transition), background var(--transition);
}

.faq-question:hover {
  color: var(--primary);
  background: rgba(15, 43, 61, 0.02);
}

body.dark-mode .faq-question:hover {
  background: rgba(232, 184, 75, 0.04);
}

.faq-question svg {
  width: 20px;
  height: 20px;
  fill: var(--text-light);
  flex-shrink: 0;
  transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1), fill var(--transition);
}

.faq-item.active .faq-question svg {
  transform: rotate(180deg);
  fill: var(--primary);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.5s cubic-bezier(0.4, 0, 0.2, 1), padding 0.4s ease;
  padding: 0 24px;
}

.faq-item.active .faq-answer {
  max-height: 500px;
  padding: 0 24px 22px;
}

.faq-answer p {
  font-size: 0.94rem;
  color: var(--text-light);
  line-height: 1.8;
}

/* ========== HowTo ========== */
.howto-steps {
  max-width: 860px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.howto-step {
  display: flex;
  gap: 20px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 26px;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition), background var(--transition);
  position: relative;
  overflow: hidden;
}

.howto-step::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--accent);
  transform: scaleY(0);
  transform-origin: top;
  transition: transform var(--transition);
}

.howto-step:hover::before {
  transform: scaleY(1);
}

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

.step-number {
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1.05rem;
  transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
}

.howto-step:hover .step-number {
  transform: scale(1.1);
  box-shadow: 0 4px 16px rgba(15, 43, 61, 0.3);
}

body.dark-mode .step-number {
  color: #0f172a;
}

.step-content h3 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 8px;
  transition: color var(--transition);
}

.howto-step:hover .step-content h3 {
  color: var(--primary);
}

.step-content p {
  font-size: 0.92rem;
  color: var(--text-light);
  line-height: 1.75;
}

/* ========== 客户评价 ========== */
.testimonial-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 24px;
}

.testimonial-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition), background var(--transition);
  position: relative;
  overflow: hidden;
}

.testimonial-card::before {
  content: "\201C";
  position: absolute;
  top: 16px;
  right: 24px;
  font-size: 3.5rem;
  color: var(--accent);
  opacity: 0.25;
  font-family: Georgia, serif;
  line-height: 1;
  transition: opacity var(--transition), transform var(--transition);
}

.testimonial-card:hover::before {
  opacity: 0.5;
  transform: scale(1.1);
}

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

.testimonial-text {
  font-size: 0.94rem;
  color: var(--text-light);
  line-height: 1.8;
  margin-bottom: 20px;
  position: relative;
  z-index: 1;
}

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

.author-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 700;
  font-size: 0.95rem;
  flex-shrink: 0;
  transition: transform var(--transition), box-shadow var(--transition);
}

.testimonial-card:hover .author-avatar {
  transform: scale(1.1);
  box-shadow: 0 4px 16px rgba(15, 43, 61, 0.25);
}

.author-info strong {
  display: block;
  font-size: 0.92rem;
  color: var(--text);
}

.author-info span {
  font-size: 0.82rem;
  color: var(--text-light);
}

/* ========== 联系方式 ========== */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 24px;
  max-width: 1000px;
  margin: 0 auto;
}

.contact-info {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  text-align: center;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition), background var(--transition);
  position: relative;
  overflow: hidden;
}

.contact-info::before {
  content: "";
  position: absolute;
  top: 0;
  left: 50%;
  width: 0;
  height: 3px;
  background: var(--accent);
  transform: translateX(-50%);
  transition: width var(--transition);
}

.contact-info:hover::before {
  width: 60%;
}

.contact-info:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-6px);
  border-color: transparent;
}

.contact-info svg {
  width: 32px;
  height: 32px;
  fill: var(--primary);
  margin-bottom: 14px;
  transition: transform var(--transition), fill var(--transition);
}

.contact-info:hover svg {
  transform: scale(1.15) translateY(-2px);
  fill: var(--accent-dark);
}

.contact-info h3 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 8px;
}

.contact-info p {
  font-size: 0.9rem;
  color: var(--text-light);
  line-height: 1.7;
}

.contact-info a {
  color: var(--primary);
  text-decoration: none;
  font-weight: 600;
  transition: color var(--transition);
}

.contact-info a:hover {
  color: var(--accent-dark);
  text-decoration: underline;
}

/* ========== 页脚 ========== */
.site-footer {
  background: linear-gradient(135deg, var(--primary) 0%, #0a1f2e 100%);
  color: rgba(255, 255, 255, 0.75);
  padding: 60px 0 30px;
  position: relative;
  overflow: hidden;
}

.site-footer::before {
  content: "";
  position: absolute;
  top: -50%;
  right: -10%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(232, 184, 75, 0.06) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

body.dark-mode .site-footer {
  background: linear-gradient(135deg, #0a0f1a 0%, #0f172a 100%);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
  position: relative;
  z-index: 1;
}

.footer-brand h3 {
  color: #fff;
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 14px;
}

.footer-brand p {
  font-size: 0.88rem;
  line-height: 1.8;
  margin-bottom: 16px;
  max-width: 340px;
}

.footer-brand .footer-contact {
  font-size: 0.85rem;
  line-height: 2;
}

.footer-brand .footer-contact a {
  color: var(--accent);
  text-decoration: none;
  transition: color var(--transition);
}

.footer-brand .footer-contact a:hover {
  color: #fff;
  text-decoration: underline;
}

.footer-col h4 {
  color: #fff;
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 16px;
  position: relative;
  padding-bottom: 8px;
}

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

.footer-col ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-col a {
  color: rgba(255, 255, 255, 0.65);
  text-decoration: none;
  font-size: 0.86rem;
  transition: color var(--transition), padding-left var(--transition);
}

.footer-col a:hover {
  color: var(--accent);
  padding-left: 6px;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  padding-top: 24px;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  font-size: 0.82rem;
  position: relative;
  z-index: 1;
}

.footer-bottom a {
  color: rgba(255, 255, 255, 0.65);
  text-decoration: none;
  transition: color var(--transition);
}

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

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
}

/* ========== 返回顶部 ========== */
.back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: var(--primary);
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 16px rgba(15, 43, 61, 0.3);
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px) scale(0.9);
  transition: opacity var(--transition), visibility var(--transition), transform var(--transition), background var(--transition), box-shadow var(--transition);
  z-index: 999;
}

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

.back-to-top:hover {
  background: var(--primary-light);
  transform: translateY(-4px) scale(1.05);
  box-shadow: 0 8px 24px rgba(15, 43, 61, 0.4);
}

.back-to-top svg {
  width: 20px;
  height: 20px;
  fill: #fff;
}

/* ========== 滚动动画 ========== */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s cubic-bezier(0.4, 0, 0.2, 1), transform 0.7s cubic-bezier(0.4, 0, 0.2, 1);
}

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

/* ========== 响应式 ========== */
@media (max-width: 1024px) {
  .hero h1 {
    font-size: 2.2rem;
  }

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

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

@media (max-width: 768px) {
  .container {
    padding: 0 16px;
  }

  .header-inner {
    height: 60px;
  }

  .nav-menu {
    display: none;
    position: absolute;
    top: 60px;
    left: 0;
    right: 0;
    background: var(--glass-bg);
    backdrop-filter: blur(var(--glass-blur)) saturate(180%);
    -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(180%);
    flex-direction: column;
    padding: 16px;
    gap: 4px;
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow-lg);
    animation: slideDown 0.3s ease both;
  }

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

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

  .nav-menu a {
    padding: 12px 16px;
    width: 100%;
  }

  .nav-menu a::after {
    display: none;
  }

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

  .search-box {
    display: none;
  }

  .hero {
    padding: 56px 0 48px;
  }

  .hero h1 {
    font-size: 1.75rem;
  }

  .hero p {
    font-size: 1rem;
  }

  .section {
    padding: 48px 0;
  }

  .section-header h2 {
    font-size: 1.5rem;
  }

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

  .stat-number {
    font-size: 1.5rem;
  }

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

  .howto-step {
    flex-direction: column;
    gap: 14px;
  }

  .howto-step:hover {
    transform: translateY(-4px);
  }

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

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

  .carousel-caption {
    padding: 40px 20px 24px;
  }

  .carousel-caption h3 {
    font-size: 1.1rem;
  }

  .carousel-caption p {
    font-size: 0.82rem;
  }

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

@media (max-width: 480px) {
  .hero h1 {
    font-size: 1.5rem;
  }

  .hero-actions {
    flex-direction: column;
  }

  .btn {
    width: 100%;
    justify-content: center;
  }

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

  .stat-item {
    padding: 14px 8px;
  }

  .stat-number {
    font-size: 1.3rem;
  }

  .stat-label {
    font-size: 0.75rem;
  }

  .card,
  .article-card,
  .testimonial-card,
  .contact-info {
    padding: 20px;
  }

  .faq-question {
    padding: 16px 18px;
    font-size: 0.94rem;
  }

  .faq-answer {
    padding: 0 18px;
  }

  .faq-item.active .faq-answer {
    padding: 0 18px 18px;
  }
}

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

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

::-webkit-scrollbar-thumb {
  background: var(--text-light);
  border-radius: 4px;
  opacity: 0.5;
  transition: background var(--transition);
}

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

/* ========== 焦点可见性 ========== */
a:focus-visible,
button:focus-visible,
input:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* ========== 打印样式 ========== */
@media print {
  .site-header,
  .back-to-top,
  .hero-actions,
  .search-box,
  .theme-toggle,
  .mobile-menu-btn,
  .carousel-dots {
    display: none !important;
  }

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

  .hero {
    background: #0f2b3d !important;
    -webkit-print-color-adjust: exact;
    print-color-adjust: exact;
  }

  .card,
  .article-card,
  .testimonial-card,
  .faq-item,
  .howto-step,
  .contact-info {
    box-shadow: none !important;
    border: 1px solid #ddd !important;
  }
}

/* ========== 减少动画偏好 ========== */
@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;
  }
}
```