```css
/* ================================================================
   555电影 · 暖金光影设计系统
   GOLDEN CINEMA EDITION — 一网观天下，光影零距离
   ================================================================ */

:root {
  --bg-warm: #FDF9F0;
  --bg-paper: #FFF8ED;
  --bg-even: #F4EEE2;
  --primary: #E4572E;
  --primary-dark: #C63E1A;
  --secondary: #2E5266;
  --gold: #E6A400;
  --text-dark: #2A2520;
  --text-muted: #6B5D4F;
  --border-warm: #E8DCC8;
  --shadow-warm: 0 8px 30px rgba(180, 150, 110, 0.12);
}

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

body {
  font-family: system-ui, 'PingFang SC', 'Microsoft YaHei', sans-serif;
  overflow-x: hidden;
  background: var(--bg-warm);
  color: var(--text-dark);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

::selection {
  background: var(--primary);
  color: #FFF8ED;
}

html {
  scroll-behavior: smooth;
}

/* ---------- 核心布局 ---------- */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 80px 0;
  position: relative;
}

.section:nth-child(even) {
  background: var(--bg-even);
}

/* ---------- 导航 ---------- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(253, 249, 240, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(228, 87, 46, 0.12);
  box-shadow: 0 2px 20px rgba(180, 150, 110, 0.08);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 1.25rem;
  text-decoration: none;
  color: var(--text-dark);
  letter-spacing: -0.5px;
}

.logo-icon {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--primary), var(--gold));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  color: #FFF;
  box-shadow: 0 4px 12px rgba(228, 87, 46, 0.3);
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 28px;
  list-style: none;
}

.main-nav a {
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-muted);
  transition: all 0.3s ease;
  position: relative;
  padding: 4px 0;
}

.main-nav a:not(.nav-cta)::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--primary);
  transition: width 0.3s ease;
  border-radius: 2px;
}

.main-nav a:not(.nav-cta):hover {
  color: var(--primary);
}

.main-nav a:not(.nav-cta):hover::after {
  width: 100%;
}

.nav-cta {
  padding: 8px 22px;
  border-radius: 50px;
  color: #FFF !important;
  font-weight: 600;
  background: linear-gradient(135deg, var(--primary), var(--gold));
  box-shadow: 0 4px 12px rgba(228, 87, 46, 0.25);
  transition: all 0.3s ease;
}

.nav-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(228, 87, 46, 0.35);
}

.menu-toggle {
  display: none;
  width: 40px;
  height: 40px;
  border: none;
  background: transparent;
  cursor: pointer;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
}

.menu-toggle span {
  width: 20px;
  height: 2px;
  background: var(--text-dark);
  border-radius: 2px;
  transition: all 0.3s ease;
}

/* ---------- 首页 Hero ---------- */
.hero {
  min-height: 70vh;
  display: flex;
  align-items: center;
  gap: 60px;
  padding: 100px 24px 60px;
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(ellipse at 85% 40%, rgba(230, 164, 0, 0.12) 0%, transparent 50%),
    radial-gradient(ellipse at 20% 80%, rgba(228, 87, 46, 0.08) 0%, transparent 40%),
    var(--bg-warm);
}

/* 胶片齿孔装饰条 */
.hero::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 24px;
  background-image: radial-gradient(circle, rgba(228, 87, 46, 0.25) 3px, transparent 3px);
  background-size: 24px 24px;
  background-position: center;
  pointer-events: none;
}

.hero-content {
  max-width: 720px;
  position: relative;
  z-index: 2;
  flex: 1;
}

.hero-eyebrow {
  display: inline-block;
  font-size: 0.85rem;
  font-weight: 700;
  padding: 6px 18px;
  border-radius: 50px;
  margin-bottom: 16px;
  background: linear-gradient(135deg, rgba(228, 87, 46, 0.1), rgba(230, 164, 0, 0.1));
  color: var(--primary);
  border: 1px solid rgba(228, 87, 46, 0.15);
  letter-spacing: 1.5px;
  text-transform: uppercase;
}

.hero h1 {
  font-size: 3.2rem;
  font-weight: 900;
  line-height: 1.15;
  margin-bottom: 20px;
  color: var(--text-dark);
  letter-spacing: -1.5px;
}

.hero h1 .text-accent {
  color: var(--primary);
  position: relative;
  display: inline-block;
}

.hero h1 .text-accent::after {
  content: '';
  position: absolute;
  bottom: 2px;
  left: 0;
  width: 100%;
  height: 6px;
  background: linear-gradient(90deg, rgba(228, 87, 46, 0.2), rgba(230, 164, 0, 0.2));
  border-radius: 4px;
  z-index: -1;
}

.hero p {
  font-size: 1.1rem;
  color: var(--text-muted);
  max-width: 560px;
  margin-bottom: 32px;
  line-height: 1.7;
}

.hero-buttons {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

.hero-image {
  flex: 1;
  max-width: 420px;
  border-radius: 18px;
  overflow: hidden;
  box-shadow: 0 24px 60px rgba(180, 150, 110, 0.3), 0 4px 12px rgba(228, 87, 46, 0.08);
  border: 4px solid #FFF;
  outline: 1px solid rgba(228, 87, 46, 0.12);
  position: relative;
  transform: rotate(1.5deg);
  transition: all 0.4s ease;
  background: var(--bg-paper);
}

.hero-image:hover {
  transform: rotate(0deg) scale(1.02);
  box-shadow: 0 30px 70px rgba(180, 150, 110, 0.35);
}

.hero-image img {
  width: 100%;
  height: auto;
  display: block;
}

.hero-image::before {
  content: '';
  position: absolute;
  top: -20%;
  right: -30%;
  width: 60%;
  height: 60%;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(230, 164, 0, 0.15), transparent 70%);
  pointer-events: none;
}

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: 50px;
  font-weight: 600;
  cursor: pointer;
  border: none;
  text-decoration: none;
  transition: all 0.3s ease;
  font-size: 0.95rem;
  line-height: 1;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--gold));
  color: #FFF;
  box-shadow: 0 4px 16px rgba(228, 87, 46, 0.25);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(228, 87, 46, 0.35);
}

.btn-outline {
  background: transparent;
  border: 1.5px solid var(--secondary);
  color: var(--secondary);
}

.btn-outline:hover {
  background: var(--secondary);
  color: #FFF;
  transform: translateY(-2px);
  box-shadow: 0 4px 16px rgba(46, 82, 102, 0.2);
}

/* ---------- 标签/标题 ---------- */
.section-label {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 3px;
  margin-bottom: 12px;
  color: var(--primary);
  text-transform: uppercase;
  position: relative;
  padding-left: 20px;
}

.section-label::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--gold);
  box-shadow: 0 0 0 3px rgba(230, 164, 0, 0.2);
}

.section-title {
  font-size: 2.2rem;
  font-weight: 800;
  margin-bottom: 14px;
  color: var(--text-dark);
  letter-spacing: -1px;
  line-height: 1.2;
}

.section-desc {
  max-width: 600px;
  color: var(--text-muted);
  margin-bottom: 40px;
  font-size: 1.05rem;
}

/* ---------- 卡片网格 ---------- */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 24px;
}

.category-card {
  border-radius: 16px;
  padding: 28px;
  border: 1px solid var(--border-warm);
  background: var(--bg-paper);
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.category-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--primary), var(--gold));
  opacity: 0;
  transition: opacity 0.3s ease;
}

.category-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-warm);
  border-color: rgba(228, 87, 46, 0.2);
}

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

.card-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
  font-size: 1.3rem;
  background: linear-gradient(135deg, rgba(228, 87, 46, 0.1), rgba(230, 164, 0, 0.1));
  border: 1px solid rgba(228, 87, 46, 0.1);
}

.card-link {
  font-weight: 600;
  font-size: 0.85rem;
  text-decoration: none;
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: gap 0.3s ease;
}

.card-link:hover {
  gap: 8px;
}

/* ---------- 特性块 ---------- */
.feature-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
}

.feature-image {
  border-radius: 18px;
  overflow: hidden;
  box-shadow: 0 16px 40px rgba(180, 150, 110, 0.15);
  border: 3px solid #FFF;
  position: relative;
}

.feature-image img {
  width: 100%;
  height: auto;
  display: block;
}

.feature-text {
  padding: 20px 0;
}

.feature-list {
  list-style: none;
  margin-top: 16px;
}

.feature-list li {
  padding: 8px 0;
  display: flex;
  align-items: center;
  gap: 12px;
  color: #4A4038;
  font-size: 1rem;
}

.feature-list li::before {
  content: '✓';
  font-weight: 700;
  color: var(--primary);
  background: rgba(228, 87, 46, 0.08);
  width: 22px;
  height: 22px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.7rem;
  flex-shrink: 0;
}

/* ---------- 数据条 ---------- */
.stats-bar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  text-align: center;
}

.stat-item {
  padding: 28px 24px;
  border-radius: 16px;
  border: 1px solid var(--border-warm);
  background: var(--bg-paper);
  position: relative;
  overflow: hidden;
  transition: all 0.3s ease;
}

.stat-item:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-warm);
}

.stat-item::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--gold));
  opacity: 0.6;
  transition: opacity 0.3s ease;
}

.stat-item:hover::after {
  opacity: 1;
}

.stat-number {
  font-size: 2.4rem;
  font-weight: 900;
  color: var(--primary);
  line-height: 1.2;
  display: inline-block;
  position: relative;
}

.stat-number::after {
  content: '+';
  position: absolute;
  top: 0;
  right: -18px;
  font-size: 1.4rem;
  color: var(--gold);
  font-weight: 700;
}

.stat-label {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-top: 8px;
  letter-spacing: 0.5px;
}

/* ---------- 内容墙 ---------- */
.content-wall {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
}

.content-wall-item {
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid var(--border-warm);
  background: var(--bg-paper);
  transition: all 0.3s ease;
  position: relative;
}

.content-wall-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-warm);
  border-color: rgba(228, 87, 46, 0.2);
}

.content-wall-item img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  display: block;
  transition: transform 0.4s ease;
}

.content-wall-item:hover img {
  transform: scale(1.03);
}

.content-wall-body {
  padding: 20px;
}

.content-wall-body h4 {
  font-size: 1.1rem;
  margin-bottom: 6px;
  font-weight: 700;
  color: var(--text-dark);
}

.content-wall-body p {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.5;
}

/* 内容墙底部胶片装饰 */
.content-wall-item::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: repeating-linear-gradient(
    90deg,
    var(--primary) 0, var(--primary) 6px, transparent 6px, transparent 12px
  );
  opacity: 0;
  transition: opacity 0.3s ease;
}

.content-wall-item:hover::after {
  opacity: 0.7;
}

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

.faq-item {
  border: 1px solid var(--border-warm);
  border-radius: 14px;
  margin-bottom: 10px;
  overflow: hidden;
  cursor: pointer;
  background: var(--bg-paper);
  transition: all 0.3s ease;
}

.faq-item:hover {
  border-color: rgba(228, 87, 46, 0.25);
}

.faq-item.open {
  border-color: rgba(228, 87, 46, 0.3);
  box-shadow: 0 6px 20px rgba(180, 150, 110, 0.1);
}

.faq-item .faq-question {
  padding: 18px 24px;
  font-weight: 600;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 1rem;
  color: var(--text-dark);
}

.faq-item .faq-question::after {
  content: '+';
  font-size: 1.5rem;
  color: var(--primary);
  transition: all 0.3s ease;
  font-weight: 400;
  line-height: 1;
}

.faq-item.open .faq-question::after {
  transform: rotate(45deg);
}

.faq-item .faq-answer {
  padding: 0 24px 20px;
  display: none;
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.7;
}

.faq-item.open .faq-answer {
  display: block;
  animation: fadeIn 0.3s ease;
}

/* ---------- CTA横幅 ---------- */
.cta-banner {
  padding: 56px 24px;
  text-align: center;
  border-radius: 24px;
  background: linear-gradient(135deg, var(--primary) 0%, var(--gold) 100%);
  position: relative;
  overflow: hidden;
  box-shadow: 0 20px 50px rgba(228, 87, 46, 0.3);
}

.cta-banner::before {
  content: '';
  position: absolute;
  top: -60%;
  right: -10%;
  width: 350px;
  height: 350px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.08);
  pointer-events: none;
}

.cta-banner::after {
  content: '';
  position: absolute;
  bottom: -40%;
  left: -10%;
  width: 250px;
  height: 250px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.05);
  pointer-events: none;
}

.cta-banner h2 {
  color: #FFF;
  font-size: 1.8rem;
  font-weight: 800;
  margin-bottom: 16px;
  position: relative;
  z-index: 1;
  letter-spacing: -0.5px;
}

.cta-banner .btn-primary {
  background: #FFF;
  color: var(--primary);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
  z-index: 1;
  position: relative;
  border: none;
}

.cta-banner .btn-primary:hover {
  transform: translateY(-2px) scale(1.02);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
}

/* ---------- 页脚 ---------- */
.site-footer {
  padding: 56px 0 28px;
  background: var(--bg-even);
  border-top: 1px solid var(--border-warm);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
}

.footer-brand {
  padding-right: 20px;
}

.footer-brand .logo {
  margin-bottom: 16px;
}

.footer-brand p {
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.7;
}

.footer-col {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-col h4 {
  font-size: 1rem;
  color: var(--text-dark);
  margin-bottom: 8px;
  font-weight: 700;
  position: relative;
  padding-bottom: 6px;
}

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

.footer-col a {
  text-decoration: none;
  color: var(--text-muted);
  font-size: 0.9rem;
  transition: color 0.2s ease, padding-left 0.2s ease;
}

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

.footer-bottom {
  border-top: 1px solid rgba(228, 87, 46, 0.1);
  margin-top: 40px;
  padding-top: 20px;
  text-align: center;
  font-size: 0.85rem;
  color: #8B7E6A;
}

/* ---------- 工具类 ---------- */
.text-accent {
  color: var(--primary);
}

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

.seo-description {
  max-width: 600px;
  margin: 0 auto 48px;
  color: var(--text-muted);
  font-size: 1.05rem;
  line-height: 1.8;
}

.mt-0 { margin-top: 0; }
.mb-0 { margin-bottom: 0; }

/* ---------- 动画 ---------- */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(-4px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ---------- 响应式 ---------- */
@media (max-width: 768px) {
  .hero {
    flex-direction: column;
    gap: 40px;
    padding: 100px 24px 50px;
  }

  .hero-image {
    max-width: 100%;
    transform: rotate(0deg);
  }

  .hero-image:hover {
    transform: scale(1.01);
  }

  .feature-block {
    grid-template-columns: 1fr;
    gap: 32px;
  }

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

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

  .main-nav {
    display: none;
  }

  .menu-toggle {
    display: flex;
  }

  .main-nav.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 68px;
    left: 0;
    width: 100%;
    background: var(--bg-warm);
    padding: 24px;
    gap: 16px;
    box-shadow: 0 8px 32px rgba(180, 150, 110, 0.15);
    border-bottom: 1px solid var(--border-warm);
    border-radius: 0 0 20px 20px;
    z-index: 999;
  }

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

  .section {
    padding: 60px 0;
  }

  .section-title {
    font-size: 1.8rem;
  }
}

@media (max-width: 480px) {
  .cards-grid,
  .content-wall,
  .stats-bar {
    grid-template-columns: 1fr;
  }

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

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

  .hero-buttons .btn {
    justify-content: center;
  }

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

  .hero {
    padding: 90px 20px 50px;
  }

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