```css

/* ---------- 大片电影网 完整样式表 ---------- */
/* ---------- 设计系统与全局变量 ---------- */
:root {
  --bg-main: #F5F7FA;
  --bg-card: #FFFFFF;
  --bg-nav: #1A2B3C;
  --bg-footer: #111827;
  --text-primary: #1F2937;
  --text-secondary: #374151;
  --text-heading: #0F172A;
  --text-link: #1D4ED8;
  --text-btn: #FFFFFF;
  --border-light: #D1D5DB;
  --accent: #2563EB;
  --accent-hover: #1E40AF;
  --accent-glow: rgba(37, 99, 235, 0.3);
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.12);
  --radius-sm: 8px;
  --radius: 12px;
  --radius-lg: 20px;
  --radius-full: 999px;
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --glass-bg: rgba(255, 255, 255, 0.08);
  --glass-border: rgba(255, 255, 255, 0.15);
  --gradient-hero: linear-gradient(135deg, #0F172A 0%, #1E3A5F 50%, #2563EB 100%);
  --gradient-card: linear-gradient(145deg, rgba(255, 255, 255, 0.9), rgba(255, 255, 255, 0.6));
  --gradient-text: linear-gradient(90deg, #F59E0B, #FBBF24);
  --gradient-btn: linear-gradient(135deg, #2563EB, #1E40AF);
  --gradient-btn-hover: linear-gradient(135deg, #1E40AF, #172554);
}

/* ---------- 暗色模式变量 ---------- */
[data-theme="dark"] {
  --bg-main: #0B1220;
  --bg-card: #1F2937;
  --bg-nav: #0F172A;
  --bg-footer: #0B1220;
  --text-primary: #E5E7EB;
  --text-secondary: #CBD5E1;
  --text-heading: #FFFFFF;
  --text-link: #7CB8FF;
  --text-btn: #F8FAFC;
  --border-light: #334155;
  --accent: #3B82F6;
  --accent-hover: #2563EB;
  --accent-glow: rgba(59, 130, 246, 0.4);
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.6);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.7);
  --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.8);
  --glass-bg: rgba(255, 255, 255, 0.05);
  --glass-border: rgba(255, 255, 255, 0.1);
  --gradient-hero: linear-gradient(135deg, #020617 0%, #0F172A 50%, #1E3A8A 100%);
  --gradient-card: linear-gradient(145deg, rgba(31, 41, 55, 0.95), rgba(17, 24, 39, 0.85));
  --gradient-btn: linear-gradient(135deg, #3B82F6, #2563EB);
  --gradient-btn-hover: linear-gradient(135deg, #2563EB, #1E40AF);
}

/* ---------- 基础重置与全局样式 ---------- */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  scrollbar-width: thin;
  scrollbar-color: var(--accent) var(--bg-main);
}

body {
  font-family: system-ui, -apple-system, 'Segoe UI', Roboto, 'PingFang SC', 'Microsoft YaHei', sans-serif;
  background-color: var(--bg-main);
  color: var(--text-primary);
  line-height: 1.7;
  transition: background-color 0.3s ease, color 0.3s ease;
  overflow-x: hidden;
  min-height: 100vh;
}

body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle at 20% 20%, var(--accent-glow) 0%, transparent 50%),
              radial-gradient(circle at 80% 80%, rgba(245, 158, 11, 0.1) 0%, transparent 50%);
  pointer-events: none;
  z-index: -1;
  opacity: 0.6;
  transition: opacity 0.3s ease;
}

h1, h2, h3, h4, h5, h6 {
  color: var(--text-heading);
  font-weight: 650;
  line-height: 1.3;
  letter-spacing: 0.3px;
}

p {
  color: var(--text-primary);
  line-height: 1.7;
}

a {
  color: var(--text-link);
  text-decoration: none;
  transition: color 0.2s ease, opacity 0.2s ease;
  -webkit-tap-highlight-color: transparent;
}

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

img, svg {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-sm);
  display: block;
}

ul, ol {
  list-style-position: inside;
  padding-left: 0;
}

button {
  font-family: inherit;
  border: none;
  cursor: pointer;
  background: none;
  transition: all 0.3s ease;
}

input, textarea, select {
  font-family: inherit;
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

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

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

::-webkit-scrollbar-thumb {
  background: var(--accent);
  border-radius: var(--radius-full);
}

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

/* ---------- 工具类 ---------- */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  width: 100%;
}

.section {
  padding: 60px 0;
}

.text-gradient {
  background: var(--gradient-text);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.glass-effect {
  background: var(--glass-bg);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid var(--glass-border);
}

.btn {
  display: inline-block;
  background: var(--gradient-btn);
  color: #FFFFFF;
  padding: 12px 28px;
  border-radius: var(--radius-full);
  font-weight: 600;
  font-size: 0.95rem;
  letter-spacing: 0.3px;
  transition: background 0.3s ease, transform 0.3s ease, box-shadow 0.3s ease;
  position: relative;
  overflow: hidden;
  border: none;
  cursor: pointer;
  text-align: center;
}

.btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transition: left 0.5s ease;
}

.btn:hover {
  background: var(--gradient-btn-hover);
  transform: translateY(-2px);
  box-shadow: 0 8px 25px var(--accent-glow);
  text-decoration: none;
  color: #FFFFFF;
}

.btn:hover::before {
  left: 100%;
}

.btn:active {
  transform: translateY(0);
}

.btn-outline {
  background: transparent;
  border: 2px solid var(--accent);
  color: var(--accent);
  padding: 10px 24px;
}

.btn-outline:hover {
  background: var(--accent);
  color: #FFFFFF;
  text-decoration: none;
  box-shadow: 0 4px 15px var(--accent-glow);
}

.btn-lg {
  padding: 14px 36px;
  font-size: 1.1rem;
}

.btn-sm {
  padding: 8px 18px;
  font-size: 0.85rem;
}

/* ---------- 导航栏 ---------- */
.navbar {
  background-color: var(--bg-nav);
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.nav-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  min-height: 68px;
  padding: 0 20px;
  gap: 20px;
}

.logo {
  font-size: 1.6rem;
  font-weight: 700;
  color: #ffffff;
  background: rgba(255, 255, 255, 0.1);
  padding: 6px 16px;
  border-radius: var(--radius-full);
  letter-spacing: 0.5px;
  display: flex;
  align-items: center;
  gap: 8px;
  transition: background 0.3s ease, transform 0.3s ease;
}

.logo:hover {
  background: rgba(255, 255, 255, 0.2);
  transform: scale(1.02);
}

.logo svg {
  width: 28px;
  height: 28px;
  fill: #ffcc4d;
  transition: transform 0.5s ease;
}

.logo:hover svg {
  transform: rotate(360deg);
}

.nav-links {
  display: flex;
  gap: 28px;
  font-weight: 500;
  list-style: none;
}

.nav-links a {
  color: #F1F5F9;
  font-size: 1rem;
  padding: 6px 2px;
  border-bottom: 2px solid transparent;
  position: relative;
  transition: color 0.3s ease, border-color 0.3s ease;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: #ffcc4d;
  transition: width 0.3s ease;
}

.nav-links a:hover {
  color: #ffffff;
  text-decoration: none;
}

.nav-links a:hover::after {
  width: 100%;
}

.search-box {
  display: flex;
  align-items: center;
  background: rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-full);
  padding: 5px 10px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  transition: background 0.3s ease, border-color 0.3s ease;
}

.search-box:focus-within {
  background: rgba(255, 255, 255, 0.15);
  border-color: #ffcc4d;
}

.search-box input {
  background: transparent;
  border: none;
  padding: 6px 10px;
  color: #fff;
  outline: none;
  width: 140px;
  font-size: 0.9rem;
}

.search-box input::placeholder {
  color: #cbd5e1;
  opacity: 0.8;
}

.search-box button {
  background: #ffcc4d;
  border: none;
  border-radius: var(--radius-full);
  padding: 6px 14px;
  font-weight: 600;
  color: #111827;
  cursor: pointer;
  transition: background 0.2s ease, transform 0.2s ease;
  font-size: 0.9rem;
}

.search-box button:hover {
  background: #e6b800;
  transform: scale(1.05);
}

.mode-toggle,
.menu-toggle {
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.15);
  color: #fff;
  font-size: 1.4rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  transition: background 0.3s ease, transform 0.3s ease, box-shadow 0.3s ease;
}

.mode-toggle:hover,
.menu-toggle:hover {
  background: rgba(255, 255, 255, 0.2);
  transform: rotate(15deg);
  box-shadow: 0 0 15px rgba(255, 255, 255, 0.1);
}

.menu-toggle {
  display: none;
  font-size: 1.8rem;
}

/* 移动端菜单 */
.mobile-menu {
  display: none;
  flex-direction: column;
  background-color: var(--bg-nav);
  padding: 15px 20px;
  gap: 12px;
  border-top: 1px solid #334155;
  animation: slideDown 0.3s ease forwards;
}

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

.mobile-menu a {
  color: #F1F5F9;
  padding: 8px 0;
  font-size: 1.1rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  transition: padding-left 0.3s ease, color 0.3s ease;
}

.mobile-menu a:hover {
  color: #ffcc4d;
  padding-left: 10px;
  text-decoration: none;
}

/* ---------- 主视觉Banner ---------- */
.hero {
  background: var(--gradient-hero);
  padding: 60px 0;
  margin-bottom: 40px;
  border-radius: 0 0 var(--radius-lg) var(--radius-lg);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(255, 204, 77, 0.1) 0%, transparent 70%);
  animation: float 8s ease-in-out infinite;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -30%;
  left: -10%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(37, 99, 235, 0.2) 0%, transparent 70%);
  animation: float 10s ease-in-out infinite reverse;
}

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

.hero-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
  flex-wrap: wrap;
  position: relative;
  z-index: 1;
}

.hero-text {
  flex: 1;
  min-width: 300px;
}

.hero-text h1 {
  font-size: 3rem;
  color: #FFFFFF;
  margin-bottom: 15px;
  text-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
  line-height: 1.2;
  animation: fadeInUp 0.8s ease forwards;
}

.hero-text p {
  color: #E2E8F0;
  font-size: 1.1rem;
  max-width: 600px;
  text-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
  margin-bottom: 20px;
  animation: fadeInUp 0.8s ease 0.2s forwards;
  opacity: 0;
}

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

.hero-stats {
  display: flex;
  gap: 30px;
  background: rgba(255, 255, 255, 0.1);
  padding: 25px 35px;
  border-radius: var(--radius-lg);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.15);
  animation: fadeInUp 0.8s ease 0.4s forwards;
  opacity: 0;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
}

.stat-item {
  text-align: center;
  padding: 0 10px;
}

.stat-number {
  font-size: 2.5rem;
  font-weight: 800;
  color: #ffcc4d;
  display: block;
  line-height: 1.2;
}

.stat-label {
  color: #CBD5E1;
  font-size: 0.9rem;
  margin-top: 5px;
  letter-spacing: 1px;
}

/* ---------- 标题样式 ---------- */
.section-title {
  font-size: 2rem;
  margin-bottom: 25px;
  padding-left: 16px;
  border-left: 6px solid var(--accent);
  position: relative;
  transition: border-color 0.3s ease;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: -8px;
  left: 16px;
  width: 60px;
  height: 3px;
  background: var(--gradient-btn);
  border-radius: var(--radius-full);
}

/* ---------- 卡片网格 ---------- */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 24px;
  margin: 30px 0;
}

.card {
  background: var(--gradient-card);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-light);
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
  position: relative;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: var(--gradient-btn);
  transform: scaleX(0);
  transition: transform 0.4s ease;
}

.card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
  border-color: var(--accent);
}

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

.card h3 {
  font-size: 1.3rem;
  margin-bottom: 10px;
  color: var(--text-heading);
  display: flex;
  align-items: center;
  gap: 8px;
}

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

.card .btn {
  margin-top: 15px;
}

/* 电影卡片特殊样式 */
.card svg {
  border-radius: var(--radius);
  margin-bottom: 15px;
  transition: transform 0.4s ease;
}

.card:hover svg {
  transform: scale(1.02);
}

/* ---------- 文章列表 ---------- */
.article-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin: 30px 0;
}

.article-item {
  background: var(--bg-card);
  padding: 22px;
  border-radius: var(--radius);
  border-left: 5px solid var(--accent);
  box-shadow: var(--shadow-sm);
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
  position: relative;
  overflow: hidden;
}

.article-item::after {
  content: '📄';
  position: absolute;
  right: -10px;
  bottom: -10px;
  font-size: 4rem;
  opacity: 0.05;
  transform: rotate(-15deg);
  transition: transform 0.4s ease, opacity 0.4s ease;
}

.article-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-left-color: var(--accent-hover);
}

.article-item:hover::after {
  transform: rotate(0deg) scale(1.1);
  opacity: 0.08;
}

.article-item h4 {
  font-size: 1.2rem;
  margin-bottom: 6px;
  color: var(--text-heading);
  transition: color 0.3s ease;
}

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

.article-meta {
  font-size: 0.85rem;
  color: var(--text-secondary);
  display: flex;
  gap: 20px;
  border-bottom: 1px dashed var(--border-light);
  padding-bottom: 8px;
  margin-bottom: 10px;
}

.article-meta span::before {
  content: '·';
  margin-right: 8px;
  color: var(--accent);
}

.article-meta span:first-child::before {
  content: '';
  margin: 0;
}

/* ---------- FAQ ---------- */
.faq-item {
  background: var(--bg-card);
  border-radius: var(--radius);
  margin-bottom: 16px;
  overflow: hidden;
  border: 1px solid var(--border-light);
  box-shadow: var(--shadow-sm);
  transition: box-shadow 0.3s ease, border-color 0.3s ease;
}

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

.faq-question {
  background: var(--bg-card);
  padding: 18px 20px;
  font-weight: 600;
  font-size: 1.1rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  color: var(--text-heading);
  border: none;
  text-align: left;
  width: 100%;
  transition: background 0.3s ease;
}

.faq-question:hover {
  background: rgba(37, 99, 235, 0.05);
}

.faq-question span {
  font-size: 1.4rem;
  color: var(--accent);
  transition: transform 0.3s ease;
  flex-shrink: 0;
  margin-left: 15px;
}

.faq-answer {
  padding: 0 20px 20px;
  color: var(--text-primary);
  border-top: 1px solid var(--border-light);
  animation: fadeIn 0.3s ease forwards;
}

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

/* ---------- 表格 ---------- */
.info-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--bg-card);
  border-radius: var(--radius);
  overflow: hidden;
  margin: 20px 0;
  box-shadow: var(--shadow-sm);
}

.info-table th,
.info-table td {
  padding: 14px 15px;
  border-bottom: 1px solid var(--border-light);
  color: var(--text-primary);
  text-align: left;
}

.info-table th {
  background: var(--bg-nav);
  color: #F8FAFC;
  font-weight: 600;
  letter-spacing: 0.5px;
}

.info-table tr:hover td {
  background: rgba(37, 99, 235, 0.05);
}

/* ---------- 客户评价 ---------- */
.testimonial {
  background: var(--bg-card);
  padding: 24px;
  border-radius: var(--radius);
  font-style: italic;
  box-shadow: var(--shadow-sm);
  border-left: 6px solid #ffcc4d;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  position: relative;
}

.testimonial::before {
  content: '"';
  position: absolute;
  top: -10px;
  left: 15px;
  font-size: 4rem;
  color: #ffcc4d;
  opacity: 0.3;
  font-family: Georgia, serif;
  line-height: 1;
}

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

/* ---------- Footer ---------- */
.footer {
  background-color: var(--bg-footer);
  color: #CBD5E1;
  padding: 50px 0 20px;
  margin-top: 60px;
  position: relative;
  overflow: hidden;
}

.footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 60%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
}

.footer .col-title {
  color: #FFFFFF;
  font-weight: 700;
  margin-bottom: 15px;
  font-size: 1.1rem;
  position: relative;
  display: inline-block;
}

.footer .col-title::after {
  content: '';
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 30px;
  height: 2px;
  background: var(--accent);
}

.footer a {
  color: #9CA3AF;
  transition: color 0.3s ease, padding-left 0.3s ease;
  display: inline-block;
  margin-bottom: 8px;
}

.footer a:hover {
  color: #fff;
  padding-left: 5px;
  text-decoration: none;
}

.footer p {
  color: #9CA3AF;
  margin-top: 8px;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 30px;
  margin-bottom: 30px;
}

.footer-bottom {
  border-top: 1px solid #374151;
  padding-top: 20px;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  font-size: 0.9rem;
  gap: 10px;
}

.footer-bottom span,
.footer-bottom a {
  color: #6B7280;
  font-size: 0.85rem;
}

.footer-bottom a:hover {
  color: #fff;
}

/* ---------- 滚动动画 ---------- */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94),
              transform 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

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

/* ---------- 返回顶部 ---------- */
#backToTop {
  position: fixed;
  bottom: 30px;
  right: 30px;
  background: var(--gradient-btn);
  color: white;
  width: 50px;
  height: 50px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  cursor: pointer;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3);
  border: none;
  z-index: 999;
  opacity: 0;
  visibility: hidden;
  transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  transform: translateY(20px);
}

#backToTop.show {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

#backToTop:hover {
  background: var(--gradient-btn-hover);
  transform: translateY(-5px);
  box-shadow: 0 12px 30px var(--accent-glow);
}

/* ---------- 滚动进度条 ---------- */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 0;
  height: 3px;
  background: var(--gradient-btn);
  z-index: 1001;
  transition: width 0.1s ease;
}

/* ---------- 通用动画 ---------- */
@keyframes pulse {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.5;
  }
}

@keyframes shimmer {
  0% {
    background-position: -1000px 0;
  }
  100% {
    background-position: 1000px 0;
  }
}

/* 骨架屏加载效果 */
.skeleton {
  background: linear-gradient(90deg, var(--bg-card) 25%, var(--border-light) 50%, var(--bg-card) 75%);
  background-size: 1000px 100%;
  animation: shimmer 2s infinite linear;
}

/* ---------- 如何观看区域 ---------- */
.howto-container {
  background: var(--bg-card);
  padding: 30px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-light);
  transition: box-shadow 0.3s ease;
}

.howto-container:hover {
  box-shadow: var(--shadow-md);
}

.howto-container ol {
  margin-left: 20px;
  color: var(--text-primary);
}

.howto-container ol li {
  padding: 8px 0;
  position: relative;
  transition: padding-left 0.3s ease, color 0.3s ease;
}

.howto-container ol li:hover {
  padding-left: 10px;
  color: var(--accent);
}

/* ---------- 联系区域 ---------- */
.contact-card .card {
  display: flex;
  flex-direction: column;
  gap: 15px;
}

.contact-card .card h3 {
  margin-bottom: 5px;
}

.contact-card .card p {
  margin-bottom: 10px;
}

/* ---------- 标签/徽章 ---------- */
.badge {
  display: inline-block;
  padding: 4px 12px;
  background: rgba(37, 99, 235, 0.1);
  color: var(--accent);
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  font-weight: 500;
  transition: background 0.3s ease, color 0.3s ease;
}

.badge:hover {
  background: var(--accent);
  color: white;
}

/* ---------- 分隔线 ---------- */
.divider {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border-light), transparent);
  margin: 30px 0;
  border: none;
}

/* ---------- 响应式设计 ---------- */
@media (max-width: 1024px) {
  .hero-text h1 {
    font-size: 2.5rem;
  }

  .hero-stats {
    padding: 20px 25px;
  }

  .stat-number {
    font-size: 2rem;
  }

  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 40px;
  }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
  }

  .menu-toggle {
    display: flex;
  }

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

  .hero {
    padding: 40px 0;
  }

  .hero-text h1 {
    font-size: 2rem;
  }

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

  .hero-content {
    flex-direction: column;
    text-align: center;
    gap: 30px;
  }

  .hero-text p {
    margin-left: auto;
    margin-right: auto;
  }

  .hero-stats {
    width: 100%;
    justify-content: center;
    padding: 15px 20px;
  }

  .stat-item {
    padding: 0 5px;
  }

  .stat-number {
    font-size: 1.8rem;
  }

  .card-grid {
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 16px;
  }

  .article-list {
    grid-template-columns: 1fr;
  }

  .section-title {
    font-size: 1.7rem;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 25px;
  }

  .search-box {
    display: none;
  }

  .container {
    padding: 0 15px;
  }

  .btn {
    padding: 10px 20px;
    font-size: 0.9rem;
  }
}

@media (max-width: 480px) {
  .hero-stats {
    flex-direction: column;
    gap: 15px;
    padding: 20px;
  }

  .hero-text h1 {
    font-size: 1.8rem;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 30px;
    text-align: center;
  }

  .footer .col-title::after {
    left: 50%;
    transform: translateX(-50%);
  }

  .footer-bottom {
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 15px;
  }

  .card {
    padding: 18px;
  }

  .section-title {
    font-size: 1.5rem;
  }

  #backToTop {
    width: 45px;
    height: 45px;
    bottom: 20px;
    right: 20px;
    font-size: 1.5rem;
  }
}

/* ---------- 打印样式 ---------- */
@media print {
  .navbar,
  .hero,
  .footer,
  #backToTop,
  .search-box,
  .mode-toggle,
  .menu-toggle,
  .mobile-menu {
    display: none !important;
  }

  body {
    background: white;
    color: black;
  }

  .container {
    max-width: 100%;
    padding: 0;
  }

  .card,
  .article-item,
  .faq-item {
    box-shadow: none;
    border: 1px solid #ddd;
    break-inside: avoid;
  }
}

/* ---------- 无障碍与可访问性 ---------- */
@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;
  }
}

:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 2px;
}

/* ---------- 深色模式额外调整 ---------- */
[data-theme="dark"] .card {
  background: linear-gradient(145deg, rgba(31, 41, 55, 0.9), rgba(17, 24, 39, 0.85));
}

[data-theme="dark"] .faq-question:hover {
  background: rgba(59, 130, 246, 0.1);
}

[data-theme="dark"] .testimonial {
  background: linear-gradient(145deg, rgba(31, 41, 55, 0.95), rgba(17, 24, 39, 0.9));
}

[data-theme="dark"] .search-box input {
  color: #fff;
}

[data-theme="dark"] .search-box input::placeholder {
  color: #94A3B8;
}

/* ---------- 自定义滚动条 (Firefox) ---------- */
@supports (scrollbar-color: auto) {
  * {
    scrollbar-width: thin;
    scrollbar-color: var(--accent) var(--bg-main);
  }
}

/* ---------- 图片悬停效果 ---------- */
.img-zoom-container {
  overflow: hidden;
  border-radius: var(--radius);
}

.img-zoom-container img {
  transition: transform 0.5s ease;
}

.img-zoom-container:hover img {
  transform: scale(1.05);
}

/* ---------- 添加微妙的网格背景 ---------- */
body::after {
  content: '';
  position: fixed;
  inset: 0;
  background-image: 
    linear-gradient(rgba(37, 99, 235, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(37, 99, 235, 0.03) 1px, transparent 1px);
  background-size: 50px 50px;
  pointer-events: none;
  z-index: -2;
}

/* ---------- 确保内容在深色模式下可读 ---------- */
[data-theme="dark"] .article-item,
[data-theme="dark"] .faq-item,
[data-theme="dark"] .howto-container {
  background: rgba(31, 41, 55, 0.8);
  backdrop-filter: blur(10px);
}

/* ---------- 按钮焦点状态 ---------- */
.btn:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 3px;
}

/* ---------- 卡片链接覆盖 ---------- */
.card-link {
  position: absolute;
  inset: 0;
  z-index: 1;
}

/* ---------- 空状态样式 ---------- */
.empty-state {
  text-align: center;
  padding: 60px 20px;
  color: var(--text-secondary);
}

.empty-state svg {
  width: 80px;
  height: 80px;
  margin: 0 auto 20px;
  opacity: 0.4;
}

.empty-state h3 {
  margin-bottom: 10px;
  color: var(--text-heading);
}

/* ---------- 提示信息 ---------- */
.alert {
  padding: 15px 20px;
  border-radius: var(--radius);
  margin-bottom: 20px;
  border-left: 4px solid;
  font-size: 0.95rem;
}

.alert-info {
  background: rgba(37, 99, 235, 0.1);
  border-left-color: var(--accent);
  color: var(--text-primary);
}

.alert-warning {
  background: rgba(245, 158, 11, 0.1);
  border-left-color: #F59E0B;
  color: var(--text-primary);
}

.alert-success {
  background: rgba(16, 185, 129, 0.1);
  border-left-color: #10B981;
  color: var(--text-primary);
}

/* ---------- 表单控件样式 ---------- */
.form-group {
  margin-bottom: 20px;
}

.form-label {
  display: block;
  margin-bottom: 8px;
  font-weight: 500;
  color: var(--text-heading);
  font-size: 0.95rem;
}

.form-input,
.form-textarea,
.form-select {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--border-light);
  border-radius: var(--radius);
  background-color: var(--bg-card);
  color: var(--text-primary);
  font-size: 1rem;
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: var(--text-secondary);
  opacity: 0.6;
}

/* ---------- 响应式字体 ---------- */
@media (max-width: 768px) {
  html {
    font-size: 14px;
  }
}

@media (max-width: 480px) {
  html {
    font-size: 13px;
  }
}

/* ---------- 性能优化：使用硬件加速 ---------- */
.card,
.article-item,
.faq-item,
.testimonial,
.btn {
  will-change: transform;
  -webkit-backface-visibility: hidden;
  backface-visibility: hidden;
}

/* ---------- 结束 ---------- */
```