```css
/* ===== 酷客影院全局样式 v1.0 ===== */
/* 设计系统：渐变Banner + 圆角卡片 + 毛玻璃 + 暗色模式 + 响应式 + 动效 */

/* ---------- 变量 ---------- */
:root {
  /* 亮色 */
  --bg-light: #f8fafc;
  --bg-dark: #0b1220;
  --text-primary-light: #1f2937;
  --text-secondary-light: #334155;
  --text-heading-light: #111827;
  --card-bg-light: rgba(255, 255, 255, 0.9);
  --border-light: rgba(209, 213, 219, 0.6);
  --accent: #2563eb;
  --accent-dark: #1d4ed8;
  --footer-bg-light: #1e293b;
  --footer-text-light: #f1f5f9;
  --text-on-dark: #f8fafc;
  --text-article-light: #1f2937;
  --nav-bg-light: rgba(255, 255, 255, 0.85);
  --nav-text-light: #1f2937;
  --btn-bg: #2563eb;
  --btn-text: #ffffff;
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.12);
  --glass-bg: rgba(255, 255, 255, 0.65);
  --glass-border: rgba(255, 255, 255, 0.3);
  --gradient-hero: linear-gradient(145deg, #ffffff 0%, #f1f5f9 50%, #e0e7ff 100%);
  --gradient-card: linear-gradient(135deg, rgba(255,255,255,0.95), rgba(255,255,255,0.7));
  --transition-fast: 0.2s ease;
  --transition-normal: 0.35s ease;
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-full: 9999px;
}

/* ---------- 暗色变量覆盖 ---------- */
body.dark-mode {
  --bg-light: #0b1220;
  --text-primary-light: #e2e8f0;
  --text-secondary-light: #cbd5e1;
  --text-heading-light: #ffffff;
  --card-bg-light: rgba(30, 41, 59, 0.9);
  --border-light: rgba(51, 65, 85, 0.8);
  --accent: #3b82f6;
  --accent-dark: #2563eb;
  --footer-bg-light: #0f172a;
  --footer-text-light: #e2e8f0;
  --text-article-light: #e2e8f0;
  --nav-bg-light: rgba(15, 23, 42, 0.9);
  --nav-text-light: #f1f5f9;
  --btn-bg: #3b82f6;
  --btn-text: #ffffff;
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.5);
  --glass-bg: rgba(30, 41, 59, 0.7);
  --glass-border: rgba(51, 65, 85, 0.5);
  --gradient-hero: linear-gradient(145deg, #0f172a 0%, #1e293b 50%, #1e1b4b 100%);
  --gradient-card: linear-gradient(135deg, rgba(30,41,59,0.95), rgba(30,41,59,0.7));
}

/* ---------- 基础重置 ---------- */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

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

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

a {
  color: inherit;
  text-decoration: none;
}

ul, ol {
  list-style: none;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

/* ---------- 通用容器 ---------- */
.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- 毛玻璃效果 ---------- */
.glass {
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--glass-border);
}

/* ---------- 渐变Banner ---------- */
.hero {
  padding: 64px 0 48px;
  background: var(--gradient-hero);
  position: relative;
  overflow: hidden;
  transition: background 0.4s ease;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(37, 99, 235, 0.08) 0%, transparent 70%);
  pointer-events: none;
}

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

/* ---------- 头部导航 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--nav-bg-light);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-light);
  transition: all 0.3s ease;
}

.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  gap: 16px;
}

.logo a {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--text-heading-light);
  letter-spacing: -0.02em;
  transition: transform 0.2s ease;
  display: inline-block;
}

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

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

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

.nav-link {
  color: var(--nav-text-light);
  font-weight: 500;
  padding: 8px 4px;
  border-bottom: 2px solid transparent;
  transition: all 0.2s ease;
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent);
  transition: width 0.3s ease;
}

.nav-link:hover {
  color: var(--accent);
}

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

/* 搜索框 */
.search-box {
  display: flex;
  align-items: center;
  background: var(--card-bg-light);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-full);
  padding: 6px 16px;
  transition: all 0.3s ease;
  backdrop-filter: blur(8px);
}

.search-box:focus-within {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

.search-box input {
  border: none;
  background: transparent;
  outline: none;
  font-size: 0.9rem;
  width: 160px;
  color: var(--text-primary-light);
  transition: width 0.3s ease;
}

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

.search-box input:focus {
  width: 200px;
}

.search-box button {
  background: transparent;
  border: none;
  font-size: 1.1rem;
  cursor: pointer;
  color: var(--accent);
  transition: transform 0.2s ease;
  padding: 0 4px;
}

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

/* 暗色模式按钮 */
.dark-toggle {
  background: var(--card-bg-light);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-full);
  padding: 8px 16px;
  font-weight: 500;
  color: var(--text-primary-light);
  cursor: pointer;
  transition: all 0.3s ease;
  backdrop-filter: blur(8px);
  font-size: 0.9rem;
  white-space: nowrap;
}

.dark-toggle:hover {
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
}

/* 移动端菜单按钮 */
.menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
}

.menu-toggle span {
  width: 24px;
  height: 2px;
  background: var(--text-primary-light);
  display: block;
  transition: all 0.3s ease;
  border-radius: 2px;
}

.menu-toggle:hover span {
  background: var(--accent);
}

/* ---------- 面包屑 ---------- */
.breadcrumb {
  padding: 20px 0 0;
  font-size: 0.9rem;
  color: var(--text-secondary-light);
}

.breadcrumb a {
  color: var(--accent);
  transition: opacity 0.2s ease;
}

.breadcrumb a:hover {
  opacity: 0.8;
}

.breadcrumb span {
  margin: 0 8px;
  opacity: 0.5;
}

/* ---------- Hero 内容 ---------- */
.hero-text h1 {
  font-size: 2.6rem;
  font-weight: 800;
  line-height: 1.2;
  color: var(--text-heading-light);
  margin-bottom: 20px;
  letter-spacing: -0.02em;
}

.hero-text p {
  font-size: 1.1rem;
  color: var(--text-secondary-light);
  max-width: 620px;
  line-height: 1.8;
}

.hero-cta {
  margin-top: 32px;
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

/* ---------- 按钮 ---------- */
.btn-primary {
  background-color: var(--btn-bg);
  color: var(--btn-text);
  padding: 14px 32px;
  border-radius: var(--radius-full);
  font-weight: 600;
  display: inline-block;
  transition: all 0.3s ease;
  border: none;
  font-size: 1rem;
  box-shadow: 0 4px 14px rgba(37, 99, 235, 0.25);
}

.btn-primary:hover {
  background-color: var(--accent-dark);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(37, 99, 235, 0.35);
}

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

.btn-outline {
  background: transparent;
  border: 2px solid var(--accent);
  color: var(--accent);
  padding: 12px 28px;
  border-radius: var(--radius-full);
  font-weight: 600;
  display: inline-block;
  transition: all 0.3s ease;
  font-size: 1rem;
}

.btn-outline:hover {
  background: var(--accent);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 4px 14px rgba(37, 99, 235, 0.25);
}

/* ---------- 区块 ---------- */
.section {
  padding: 56px 0;
}

.section-title {
  font-size: 2rem;
  font-weight: 700;
  color: var(--text-heading-light);
  margin-bottom: 8px;
  position: relative;
  display: inline-block;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: -6px;
  left: 0;
  width: 40px;
  height: 3px;
  background: var(--accent);
  border-radius: 2px;
}

.section-sub {
  color: var(--text-secondary-light);
  margin-bottom: 36px;
  font-size: 1.05rem;
  max-width: 700px;
}

/* ---------- 网格布局 ---------- */
.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

/* ---------- 卡片 ---------- */
.card {
  background: var(--gradient-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 28px;
  box-shadow: var(--shadow-sm);
  transition: all 0.35s ease;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  position: relative;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), transparent);
  opacity: 0;
  transition: opacity 0.3s ease;
}

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

.card:hover::before {
  opacity: 1;
}

.card h3 {
  font-size: 1.3rem;
  margin-bottom: 12px;
  color: var(--text-heading-light);
  font-weight: 700;
}

.card p {
  color: var(--text-article-light);
  line-height: 1.7;
}

.card .meta {
  display: inline-block;
  margin-top: 16px;
  padding: 4px 12px;
  background: rgba(37, 99, 235, 0.08);
  border-radius: var(--radius-full);
  font-size: 0.8rem;
  color: var(--accent);
}

/* ---------- 文章卡片 ---------- */
.article-card {
  background: var(--card-bg-light);
  border-radius: var(--radius-md);
  padding: 24px;
  border: 1px solid var(--border-light);
  transition: all 0.35s ease;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  display: flex;
  flex-direction: column;
  gap: 8px;
  position: relative;
  overflow: hidden;
}

.article-card::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent), transparent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s ease;
}

.article-card:hover {
  transform: translateY(-4px) scale(1.01);
  box-shadow: var(--shadow-lg);
  border-color: var(--accent);
}

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

.article-card h4 {
  color: var(--text-heading-light);
  font-size: 1.15rem;
  margin-bottom: 4px;
  font-weight: 700;
  line-height: 1.4;
}

.article-card .meta {
  font-size: 0.8rem;
  color: var(--text-secondary-light);
}

.article-card .summary-text {
  color: var(--text-secondary-light);
  font-size: 0.95rem;
  line-height: 1.6;
  flex-grow: 1;
}

.article-card a {
  color: var(--accent);
  font-weight: 500;
  transition: opacity 0.2s ease;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.article-card a:hover {
  opacity: 0.8;
}

/* ---------- FAQ ---------- */
.faq-item {
  border-bottom: 1px solid var(--border-light);
  padding: 20px 0;
  transition: all 0.3s ease;
}

.faq-item:first-child {
  border-top: 1px solid var(--border-light);
}

.faq-question {
  font-weight: 600;
  font-size: 1.1rem;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--text-heading-light);
  transition: color 0.2s ease;
  padding: 8px 0;
  user-select: none;
}

.faq-question:hover {
  color: var(--accent);
}

.faq-question span {
  font-size: 1.4rem;
  font-weight: 400;
  transition: transform 0.3s ease;
  color: var(--accent);
  margin-left: 16px;
  flex-shrink: 0;
}

.faq-answer {
  margin-top: 12px;
  color: var(--text-article-light);
  padding-right: 24px;
  line-height: 1.7;
  animation: fadeInDown 0.3s ease;
}

/* ---------- 表格 ---------- */
.table-wrap {
  overflow-x: auto;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-light);
  background: var(--card-bg-light);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

table {
  width: 100%;
  border-collapse: collapse;
  min-width: 600px;
}

th, td {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border-light);
  text-align: left;
}

th {
  background: rgba(37, 99, 235, 0.05);
  font-weight: 700;
  color: var(--text-heading-light);
  font-size: 0.95rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

tr:last-child td {
  border-bottom: none;
}

tr {
  transition: background 0.2s ease;
}

tr:hover td {
  background: rgba(37, 99, 235, 0.03);
}

/* ---------- HowTo 指南 ---------- */
.howto-box {
  background: var(--card-bg-light);
  padding: 32px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-light);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  box-shadow: var(--shadow-sm);
  transition: box-shadow 0.3s ease;
}

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

.howto-box h3 {
  color: var(--text-heading-light);
  font-size: 1.2rem;
  margin: 20px 0 10px;
  font-weight: 700;
}

.howto-box h3:first-child {
  margin-top: 0;
}

.howto-box p {
  color: var(--text-article-light);
  margin-bottom: 12px;
}

.howto-box ol {
  margin-left: 20px;
  color: var(--text-article-light);
  margin-bottom: 16px;
}

.howto-box ol li {
  margin-bottom: 8px;
  padding-left: 4px;
}

/* ---------- 客户评价区 ---------- */
.testimonial-box {
  margin-top: 32px;
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.05), rgba(37, 99, 235, 0.02));
  padding: 32px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-light);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.testimonial-box h3 {
  color: var(--text-heading-light);
  font-size: 1.3rem;
  margin-bottom: 16px;
}

.testimonial-box p {
  color: var(--text-article-light);
  margin-bottom: 12px;
  padding-left: 16px;
  border-left: 3px solid var(--accent);
  font-style: italic;
}

/* ---------- 页脚 ---------- */
.footer {
  background-color: var(--footer-bg-light);
  color: var(--footer-text-light);
  padding: 48px 0 24px;
  font-size: 0.9rem;
  margin-top: 40px;
}

.footer h4 {
  color: var(--footer-text-light);
  font-size: 1rem;
  margin-bottom: 12px;
  font-weight: 700;
}

.footer a {
  color: #bfdbfe;
  transition: opacity 0.2s ease;
}

.footer a:hover {
  opacity: 0.8;
}

.footer .copyright {
  margin-top: 32px;
  border-top: 1px solid rgba(148, 163, 184, 0.2);
  padding-top: 20px;
  color: #cbd5e1;
  text-align: center;
}

/* ---------- 返回顶部 ---------- */
.back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  background: var(--accent);
  color: #fff;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  box-shadow: var(--shadow-lg);
  border: none;
  cursor: pointer;
  z-index: 99;
  transition: all 0.3s ease;
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
}

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

.back-to-top:hover {
  background: var(--accent-dark);
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(37, 99, 235, 0.4);
}

/* ---------- 滚动动画 ---------- */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

.card, .article-card, .faq-item, .howto-box {
  animation: fadeInUp 0.6s ease both;
}

.card:nth-child(2), .article-card:nth-child(2) {
  animation-delay: 0.1s;
}

.card:nth-child(3), .article-card:nth-child(3) {
  animation-delay: 0.2s;
}

/* 滚动触发动画 */
.scroll-animate {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.scroll-animate.animate-in {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
  .container {
    padding: 0 20px;
  }

  .grid-3 {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }

  .hero-text h1 {
    font-size: 2.2rem;
  }

  .nav-menu {
    gap: 16px;
  }

  .search-box input {
    width: 120px;
  }

  .search-box input:focus {
    width: 150px;
  }
}

@media (max-width: 768px) {
  .nav-wrap {
    height: 64px;
  }

  .nav-menu {
    display: none;
    flex-direction: column;
    background: var(--nav-bg-light);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    padding: 20px;
    border-bottom: 1px solid var(--border-light);
    box-shadow: var(--shadow-lg);
    gap: 4px;
    z-index: 100;
  }

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

  .nav-menu li {
    width: 100%;
  }

  .nav-link {
    display: block;
    padding: 12px 16px;
    border-radius: var(--radius-sm);
    border-bottom: none;
  }

  .nav-link:hover {
    background: rgba(37, 99, 235, 0.08);
  }

  .nav-link::after {
    display: none;
  }

  .menu-toggle {
    display: flex;
  }

  .search-box {
    display: none;
  }

  .dark-toggle {
    padding: 6px 12px;
    font-size: 0.85rem;
  }

  .hero {
    padding: 48px 0 36px;
  }

  .hero-text h1 {
    font-size: 1.9rem;
  }

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

  .hero-cta {
    flex-direction: column;
    align-items: stretch;
  }

  .btn-primary, .btn-outline {
    text-align: center;
    padding: 14px 24px;
  }

  .section {
    padding: 40px 0;
  }

  .section-title {
    font-size: 1.6rem;
  }

  .grid-3 {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .card {
    padding: 20px;
  }

  .back-to-top {
    bottom: 20px;
    right: 20px;
    width: 42px;
    height: 42px;
    font-size: 1.2rem;
  }

  .footer .container > div {
    flex-direction: column;
    gap: 24px;
  }

  .table-wrap {
    border-radius: var(--radius-sm);
  }

  th, td {
    padding: 12px 14px;
    font-size: 0.9rem;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 16px;
  }

  .logo a {
    font-size: 1.3rem;
  }

  .hero-text h1 {
    font-size: 1.6rem;
  }

  .hero-text p {
    font-size: 0.95rem;
  }

  .section-title {
    font-size: 1.4rem;
  }

  .card h3 {
    font-size: 1.1rem;
  }

  .faq-question {
    font-size: 1rem;
  }

  .faq-answer {
    font-size: 0.9rem;
  }

  .howto-box {
    padding: 20px;
  }

  .howto-box ol {
    margin-left: 16px;
  }

  .back-to-top {
    bottom: 16px;
    right: 16px;
  }
}

/* ---------- 减少动画偏好 ---------- */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* ---------- 打印样式 ---------- */
@media print {
  .site-header, .footer, .back-to-top, .menu-toggle, .dark-toggle, .search-box {
    display: none !important;
  }

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

  .hero {
    background: none;
    padding: 20px 0;
  }

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

  .section {
    padding: 20px 0;
  }
}
```