/* ============================================
   aaaparts.com.cn — 复古影院视觉系统
   Theme: "Golden Hollywood"
   ============================================ */

:root {
  --bg-cream: #faf6ef;
  --bg-white: #ffffff;
  --brand-red: #d64045;
  --brand-yellow: #e9b44c;
  --brand-teal: #1b6b6b;
  --text-dark: #2d2320;
  --border-dark: #2d2320;
  --muted: rgba(45, 35, 32, 0.65);
  --shadow-offset: 4px;
}

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

html { scroll-behavior: smooth; }

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

::selection {
  background: var(--brand-yellow);
  color: var(--text-dark);
}

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

/* ========== 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-white); }

/* ========== 导航 ========== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(250, 246, 239, 0.92);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 2px solid var(--border-dark);
  box-shadow: 0 2px 20px rgba(45, 35, 32, 0.04);
}

/* 电影胶片彩色条纹 */
.site-header::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -4px;
  width: 100%;
  height: 4px;
  background: repeating-linear-gradient(
    90deg,
    var(--brand-red) 0 10px,
    var(--brand-yellow) 10px 20px,
    var(--brand-teal) 20px 30px
  );
}

.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);
  font-family: Georgia, 'PingFang SC', 'Microsoft YaHei', serif;
  letter-spacing: 0.5px;
  transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.logo:hover { transform: scale(1.02); }

.logo-icon {
  width: 36px;
  height: 36px;
  border-radius: 4px;
  background: var(--brand-red);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  box-shadow: 2px 2px 0 var(--brand-yellow);
  transition: box-shadow 0.3s, transform 0.3s;
}

.logo:hover .logo-icon {
  box-shadow: 4px 4px 0 var(--brand-yellow);
  transform: translate(-1px, -1px);
}

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

.main-nav a {
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-dark);
  position: relative;
  padding: 6px 2px;
  letter-spacing: 0.3px;
  transition: color 0.3s;
}

.main-nav a::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 2px;
  background: var(--brand-yellow);
  transition: width 0.3s;
}

.main-nav a:hover { color: var(--brand-red); }
.main-nav a:hover::after { width: 100%; }

.nav-cta {
  background: var(--brand-red);
  color: #fff !important;
  font-weight: 700 !important;
  padding: 9px 22px;
  border-radius: 2px;
  box-shadow: 3px 3px 0 var(--brand-yellow);
  transition: all 0.2s !important;
  border: 1.5px solid var(--border-dark);
}

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

.nav-cta:hover {
  background: var(--brand-red);
  color: #fff !important;
  transform: translate(-2px, -2px);
  box-shadow: 5px 5px 0 var(--brand-yellow);
}

.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  z-index: 1001;
}

.menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-dark);
  transition: transform 0.3s;
}

/* ========== Hero ========== */
.hero {
  min-height: 85vh;
  display: flex;
  align-items: center;
  position: relative;
  padding: 120px 0 80px;
  overflow: hidden;
}

/* 聚光灯效果 */
.hero::before {
  content: '';
  position: absolute;
  top: 30%;
  right: -80px;
  width: 420px;
  height: 420px;
  background: radial-gradient(circle, rgba(233, 180, 76, 0.28) 0%, rgba(233, 180, 76, 0) 70%);
  pointer-events: none;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: -80px;
  width: 320px;
  height: 320px;
  background: radial-gradient(circle, rgba(214, 64, 69, 0.12) 0%, rgba(214, 64, 69, 0) 70%);
  pointer-events: none;
}

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

.hero-eyebrow {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 3px;
  text-transform: uppercase;
  padding: 7px 18px;
  background: var(--brand-red);
  color: #fff;
  border: 1.5px solid var(--border-dark);
  clip-path: polygon(0 0, 100% 0, 96% 50%, 100% 100%, 0 100%, 4% 50%);
  margin-bottom: 18px;
}

.hero h1 {
  font-family: Georgia, "Songti SC", "SimSun", serif;
  font-size: 3.4rem;
  line-height: 1.15;
  margin-bottom: 22px;
  font-weight: 700;
  letter-spacing: -0.5px;
  color: var(--text-dark);
}

.hero p {
  font-size: 1.1rem;
  opacity: 0.7;
  max-width: 560px;
  margin-bottom: 36px;
  line-height: 1.8;
}

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

.hero-image {
  position: relative;
  z-index: 2;
  border: 2px solid var(--border-dark);
  box-shadow: 8px 8px 0 var(--brand-red);
  padding: 10px;
  background: #fff;
  max-width: 460px;
  margin-left: auto;
  transition: box-shadow 0.3s;
}

.hero-image:hover {
  box-shadow: 10px 10px 0 var(--brand-yellow);
}

.hero-image::before {
  content: '▶ 免费看';
  position: absolute;
  top: -14px;
  left: 20px;
  background: var(--brand-yellow);
  color: var(--text-dark);
  font-size: 0.75rem;
  font-weight: 800;
  padding: 3px 12px;
  letter-spacing: 1px;
  border: 1.5px solid var(--border-dark);
  z-index: 2;
}

.hero-image img {
  width: 100%;
  height: auto;
  border-radius: 2px;
}

/* ========== 按钮 ========== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 30px;
  border-radius: 2px;
  font-weight: 700;
  font-size: 0.9rem;
  cursor: pointer;
  border: none;
  text-decoration: none;
  transition: all 0.25s ease;
  letter-spacing: 0.5px;
}

.btn-primary {
  background: var(--brand-red);
  color: #fff;
  border: 1.5px solid var(--border-dark);
  box-shadow: 4px 4px 0 var(--brand-yellow);
}

.btn-primary:hover {
  transform: translate(-2px, -2px);
  box-shadow: 6px 6px 0 var(--brand-yellow);
}

.btn-primary:active {
  transform: translate(0, 0);
  box-shadow: 2px 2px 0 var(--brand-yellow);
}

.btn-outline {
  background: transparent;
  border: 1.5px solid var(--border-dark);
  color: var(--text-dark);
  box-shadow: none;
}

.btn-outline:hover {
  background: var(--text-dark);
  color: #fff;
  transform: translate(-2px, -2px);
  box-shadow: 4px 4px 0 var(--brand-yellow);
}

/* ========== 标签 / 标题 ========== */
.section-label {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 4px;
  text-transform: uppercase;
  color: var(--brand-red);
  margin-bottom: 12px;
  position: relative;
  padding-left: 40px;
}

.section-label::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  width: 30px;
  height: 2px;
  background: var(--brand-yellow);
}

.section-title {
  font-family: Georgia, "Songti SC", "SimSun", serif;
  font-size: 2.4rem;
  line-height: 1.2;
  margin-bottom: 14px;
  font-weight: 700;
  color: var(--text-dark);
  letter-spacing: -0.3px;
}

.section-title::after {
  content: '';
  display: block;
  width: 48px;
  height: 4px;
  background: var(--brand-yellow);
  margin-top: 10px;
}

.section-title.text-center::after {
  margin: 10px auto 0;
}

.section-desc {
  max-width: 600px;
  opacity: 0.7;
  margin-bottom: 40px;
  font-size: 1rem;
}

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

.category-card {
  background: var(--bg-white);
  border-radius: 2px;
  padding: 28px;
  border: 1.5px solid var(--border-dark);
  box-shadow: 4px 4px 0 var(--brand-yellow);
  transition: all 0.25s ease;
  position: relative;
}

.category-card::before {
  content: '';
  display: block;
  height: 6px;
  background: repeating-linear-gradient(
    90deg,
    var(--brand-red) 0 6px,
    transparent 6px 12px
  );
  margin-bottom: 18px;
  opacity: 0.4;
  transition: opacity 0.3s;
}

.category-card:hover {
  transform: translate(-3px, -3px);
  box-shadow: 8px 8px 0 var(--brand-red);
}

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

.category-card:nth-child(2) { background: #fdf3e0; }
.category-card:nth-child(3) { background: #fdeceb; }
.category-card:nth-child(4) { background: #edf5f3; }

.card-icon {
  width: 48px;
  height: 48px;
  border-radius: 2px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
  font-size: 1.3rem;
  background: var(--brand-yellow);
  border: 1.5px solid var(--border-dark);
}

.category-card:nth-child(2) .card-icon { background: var(--brand-red); color: #fff; }
.category-card:nth-child(3) .card-icon { background: var(--brand-teal); color: #fff; }
.category-card:nth-child(4) .card-icon { background: var(--text-dark); color: var(--brand-yellow); }

.card-link {
  font-weight: 700;
  font-size: 0.85rem;
  text-decoration: none;
  color: var(--brand-red);
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: gap 0.2s;
}

.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: 2px;
  overflow: hidden;
  border: 2px solid var(--border-dark);
  box-shadow: 6px 6px 0 var(--brand-teal);
  background: #fff;
}

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

.feature-text { padding: 0 12px; }

.feature-list {
  list-style: none;
  margin-top: 8px;
}

.feature-list li {
  padding: 8px 0;
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 500;
  border-bottom: 1px dashed rgba(45, 35, 32, 0.1);
}

.feature-list li::before {
  content: '✓';
  font-weight: 800;
  color: var(--brand-red);
  background: rgba(214, 64, 69, 0.1);
  width: 22px;
  height: 22px;
  border-radius: 2px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  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: 2px;
  border: 1.5px solid var(--border-dark);
  background: var(--bg-white);
  box-shadow: 4px 4px 0 var(--brand-yellow);
  transition: all 0.25s;
}

.stat-item:hover {
  transform: translate(-2px, -2px);
  box-shadow: 7px 7px 0 var(--brand-red);
}

.stat-number {
  font-family: Georgia, "Songti SC", "SimSun", serif;
  font-size: 2.4rem;
  font-weight: 800;
  color: var(--brand-red);
  line-height: 1.2;
}

.stat-label {
  font-size: 0.9rem;
  opacity: 0.6;
  margin-top: 6px;
  font-weight: 500;
  letter-spacing: 1px;
}

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

.content-wall-item {
  border-radius: 2px;
  overflow: hidden;
  border: 1.5px solid var(--border-dark);
  background: var(--bg-white);
  box-shadow: 3px 3px 0 rgba(45, 35, 32, 0.12);
  transition: all 0.3s ease;
  position: relative;
}

.content-wall-item::after {
  content: '▶';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 52px;
  height: 52px;
  background: var(--brand-red);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
  transform: translate(-50%, -30%) scale(0);
  opacity: 0;
  transition: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
  border: 2px solid var(--border-dark);
  box-shadow: 3px 3px 0 var(--brand-yellow);
  z-index: 2;
}

.content-wall-item:hover {
  transform: translate(-3px, -3px);
  box-shadow: 6px 6px 0 var(--brand-red);
}

.content-wall-item:hover::after {
  transform: translate(-50%, -50%) scale(1);
  opacity: 1;
}

.content-wall-item img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-bottom: 1.5px solid var(--border-dark);
  transition: transform 0.4s;
}

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

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

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

.faq-item {
  border: 1.5px solid var(--border-dark);
  border-radius: 2px;
  margin-bottom: 10px;
  overflow: hidden;
  cursor: pointer;
  background: var(--bg-white);
  box-shadow: 2px 2px 0 rgba(45, 35, 32, 0.08);
  transition: all 0.3s;
}

.faq-item:hover {
  box-shadow: 3px 3px 0 var(--brand-yellow);
}

.faq-item.open {
  border-color: var(--brand-red);
  box-shadow: 4px 4px 0 var(--brand-red);
}

.faq-item .faq-question {
  padding: 18px 22px;
  font-weight: 700;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 1rem;
  color: var(--text-dark);
}

.faq-question::after {
  content: '+';
  font-family: Georgia, serif;
  font-size: 1.5rem;
  color: var(--brand-red);
  line-height: 1;
  margin-left: 14px;
  transition: transform 0.3s;
}

.faq-item.open .faq-question::after {
  content: '−';
}

.faq-item .faq-answer {
  padding: 0 22px 18px;
  display: none;
  opacity: 0.7;
  line-height: 1.8;
}

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

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(-6px); }
  to { opacity: 0.7; transform: translateY(0); }
}

/* ========== CTA 横幅 ========== */
.cta-banner {
  padding: 56px 24px;
  text-align: center;
  border-radius: 2px;
  background: var(--brand-red);
  border: 2px solid var(--border-dark);
  box-shadow: 8px 8px 0 var(--brand-yellow);
  position: relative;
  overflow: hidden;
}

.cta-banner::before {
  content: '';
  position: absolute;
  top: -40px;
  right: -40px;
  width: 140px;
  height: 140px;
  border: 4px solid rgba(255, 255, 255, 0.15);
  border-radius: 50%;
  pointer-events: none;
}

.cta-banner h2 {
  color: #fff;
  font-family: Georgia, "Songti SC", "SimSun", serif;
  font-size: 2.2rem;
  margin-bottom: 16px;
  text-shadow: 2px 2px 0 rgba(45, 35, 32, 0.2);
}

.cta-banner .btn-primary {
  background: #fff;
  color: var(--brand-red);
  box-shadow: 4px 4px 0 var(--border-dark);
}

.cta-banner .btn-primary:hover {
  transform: translate(-2px, -2px);
  box-shadow: 6px 6px 0 var(--border-dark);
}

/* ========== 页脚 ========== */
.site-footer {
  padding: 64px 0 28px;
  background: var(--bg-cream);
  border-top: 2px solid var(--border-dark);
  position: relative;
}

.site-footer::before {
  content: '';
  position: absolute;
  top: -4px;
  left: 0;
  width: 100%;
  height: 4px;
  background: repeating-linear-gradient(
    90deg,
    var(--brand-red) 0 12px,
    var(--brand-yellow) 12px 24px,
    var(--brand-teal) 24px 36px
  );
}

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

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

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

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

.footer-col a:hover { color: var(--brand-red); }

.footer-bottom {
  border-top: 1px solid rgba(45, 35, 32, 0.1);
  margin-top: 40px;
  padding-top: 24px;
  text-align: center;
  font-size: 0.85rem;
  color: var(--muted);
}

/* ========== 工具类 ========== */
.text-accent {
  color: var(--brand-red);
  text-decoration: underline;
  text-decoration-color: var(--brand-yellow);
  text-underline-offset: 6px;
  text-decoration-thickness: 3px;
  font-weight: 700;
}

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

.seo-description {
  max-width: 600px;
  margin: 0 auto 48px;
  opacity: 0.7;
  padding-left: 18px;
  border-left: 4px solid var(--brand-yellow);
  font-size: 1.05rem;
  line-height: 1.8;
}

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

/* ========== 响应式 ========== */
@media (max-width: 768px) {
  .feature-block { grid-template-columns: 1fr; gap: 32px; }
  .stats-bar { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }

  .main-nav {
    display: none;
    position: absolute;
    top: 68px;
    left: 0;
    width: 100%;
    background: var(--bg-cream);
    padding: 24px;
    flex-direction: column;
    align-items: flex-start;
    gap: 18px;
    border-bottom: 2px solid var(--border-dark);
    box-shadow: 0 12px 24px rgba(45, 35, 32, 0.08);
  }

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

  .main-nav a { font-size: 1rem; }

  .menu-toggle {
    display: flex;
  }

  .hero { padding-top: 100px; }
  .hero h1 { font-size: 2.4rem; }
  .hero-image { margin: 40px auto 0; max-width: 100%; }
  .hero-content { text-align: left; }
}

@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; }

  .hero h1 { font-size: 2rem; }
  .section-title { font-size: 1.8rem; }
  .stat-number { font-size: 2rem; }
  .cta-banner h2 { font-size: 1.6rem; }
  .btn { width: 100%; justify-content: center; }
}