/* ================================================
   你懂的视频 · 深夜导航 · 设计系统
   温暖米色 + 珊瑚红 + 金黄点缀 · 杂志拼贴风
   ================================================ */

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

:root {
  --primary: #E85D4A;
  --primary-dark: #C94A38;
  --deep: #2E2B25;
  --muted: #7A6F63;
  --bg: #FBF7F2;
  --bg-alt: #F0E9E0;
  --green: #4A7C74;
  --gold: #E8A33C;
  --white: #fff;
  --border-light: rgba(46,43,37,0.12);
  --shadow-sm: 0 2px 12px rgba(46,43,37,0.05);
  --shadow-lg: 0 20px 60px rgba(46,43,37,0.08);
}

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

/* 微噪点胶片纹理 */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  opacity: 0.02;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.8' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

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

::-webkit-scrollbar { width: 10px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--muted); border-radius: 6px; }
::-webkit-scrollbar-thumb:hover { background: var(--primary); }

/* 核心布局 */
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; position: relative; z-index: 1; }

.section { padding: 80px 0; position: relative; }
.section:nth-child(even) { background: var(--bg-alt); }

/* 导航 */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(251,247,242,0.92);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--border-light);
}

/* 导航上方细线装饰 */
.site-header::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, transparent, var(--primary), var(--gold), transparent);
}

.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(--deep);
  letter-spacing: -0.01em;
}

.logo-icon {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  background: var(--primary);
  color: #fff;
  box-shadow: 0 4px 16px rgba(232,93,74,0.3);
  position: relative;
}

.logo-icon::after {
  content: '▶';
  font-size: 0.65rem;
  margin-left: 2px;
}

.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(--deep);
  position: relative;
  padding: 4px 0;
  transition: color 0.25s;
}

.main-nav a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 50%;
  width: 0;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
  transform: translateX(-50%);
  transition: width 0.3s ease;
}

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

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

.nav-cta {
  padding: 8px 22px !important;
  border-radius: 50px;
  background: var(--primary);
  color: #fff !important;
  font-weight: 600 !important;
  box-shadow: 0 4px 16px rgba(232,93,74,0.25);
  transition: transform 0.2s, box-shadow 0.2s;
}

.nav-cta:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 24px rgba(232,93,74,0.35);
  color: #fff !important;
}

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

.menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  flex-direction: column;
  gap: 6px;
}

.menu-toggle span {
  width: 26px;
  height: 2px;
  background: var(--deep);
  border-radius: 2px;
  transition: 0.3s;
}

/* 首页Hero */
.hero {
  min-height: 70vh;
  display: flex;
  align-items: center;
  padding: 150px 0 90px;
  gap: 60px;
  flex-wrap: wrap;
  position: relative;
}

/* Hero 背景装饰圆环 */
.hero::before {
  content: '';
  position: absolute;
  right: 4%;
  top: 45%;
  width: 520px;
  height: 520px;
  border-radius: 50%;
  border: 1.5px dashed rgba(232,163,60,0.4);
  transform: translateY(-50%);
  pointer-events: none;
  z-index: 0;
}

.hero::after {
  content: '';
  position: absolute;
  right: 15%;
  top: 40%;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--gold);
  opacity: 0.3;
  box-shadow: 0 0 0 8px rgba(232,163,60,0.15);
  pointer-events: none;
  z-index: 0;
}

.hero-content {
  flex: 1 1 480px;
  max-width: 720px;
  position: relative;
  z-index: 1;
}

.hero-eyebrow {
  display: inline-block;
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 1px;
  padding: 5px 16px;
  border-radius: 50px;
  background: rgba(232,163,60,0.15);
  color: #B5782A;
  margin-bottom: 18px;
  position: relative;
}

.hero-eyebrow::before {
  content: '◉';
  margin-right: 6px;
  font-size: 0.7rem;
  color: var(--primary);
}

.hero h1 {
  font-size: 3.4rem;
  line-height: 1.15;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 20px;
}

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

.hero h1 .text-accent::after {
  content: '';
  position: absolute;
  bottom: 2px;
  left: 0;
  width: 100%;
  height: 6px;
  background: rgba(232,163,60,0.3);
  border-radius: 3px;
  z-index: -1;
}

.hero p {
  font-size: 1.1rem;
  color: var(--muted);
  max-width: 560px;
  margin-bottom: 36px;
  line-height: 1.8;
}

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

.hero-image {
  flex: 1 1 400px;
  position: relative;
  z-index: 1;
}

/* 错位金色方块装饰 */
.hero-image::before {
  content: '';
  position: absolute;
  top: -18px;
  right: -18px;
  width: 60%;
  height: 60%;
  background: rgba(232,163,60,0.35);
  border-radius: 20px;
  z-index: -1;
}

.hero-image::after {
  content: '';
  position: absolute;
  bottom: -14px;
  left: -14px;
  width: 50%;
  height: 50%;
  border: 1.5px solid rgba(74,124,116,0.4);
  border-radius: 20px;
  z-index: -1;
}

.hero-image img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 18px;
  box-shadow: var(--shadow-lg);
}

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 30px;
  border-radius: 50px;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  border: none;
  text-decoration: none;
  transition: all 0.25s ease;
  letter-spacing: 0.01em;
}

.btn-primary {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 6px 20px rgba(232,93,74,0.25);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 30px rgba(232,93,74,0.35);
  background: var(--primary-dark);
}

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

.btn-outline:hover {
  border-color: var(--primary);
  color: var(--primary);
  transform: translateY(-2px);
}

/* 标签/标题 */
.section-label {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--primary);
  margin-bottom: 14px;
  position: relative;
  padding-left: 24px;
}

.section-label::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--gold);
  transform: translateY(-50%);
}

.section-title {
  font-size: 2.4rem;
  font-weight: 800;
  letter-spacing: -0.01em;
  margin-bottom: 14px;
  line-height: 1.2;
}

.section-desc {
  max-width: 600px;
  color: var(--muted);
  margin-bottom: 44px;
  font-size: 1.02rem;
  line-height: 1.8;
}

/* 卡片网格 */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 28px;
}

.category-card {
  background: var(--white);
  border-radius: 16px;
  padding: 30px;
  border: 1px solid var(--border-light);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  position: relative;
  overflow: hidden;
}

/* 卡片顶部渐变线条 */
.category-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--primary), var(--gold));
  opacity: 0.6;
  transition: opacity 0.3s;
}

.category-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 30px rgba(46,43,37,0.08);
}

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

.card-icon {
  width: 50px;
  height: 50px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
  font-size: 1.3rem;
  background: rgba(232,93,74,0.1);
  transition: transform 0.3s;
}

.category-card:hover .card-icon {
  transform: scale(1.08) rotate(-5deg);
}

.card-link {
  font-weight: 700;
  font-size: 0.85rem;
  text-decoration: none;
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  gap: 4px;
  margin-top: 6px;
  transition: gap 0.2s;
}

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

/* 特性块 */
.feature-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.feature-image {
  border-radius: 18px;
  overflow: hidden;
  position: relative;
  box-shadow: var(--shadow-lg);
}

.feature-image::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(232,93,74,0.1), transparent);
  z-index: 1;
}

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

.feature-text {
  padding: 10px 0;
}

.feature-text .section-title {
  font-size: 2rem;
}

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

.feature-list li {
  padding: 8px 0;
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--deep);
  font-weight: 500;
}

.feature-list li::before {
  content: '';
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: rgba(74,124,116,0.15);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20' fill='none' stroke='%234A7C74' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='4 10 8 14 16 6'/%3E%3C/svg%3E");
  background-size: 12px;
  background-position: center;
  background-repeat: no-repeat;
  flex-shrink: 0;
}

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

.stat-item {
  padding: 32px 20px;
  border-radius: 16px;
  border: none;
  background: var(--white);
  box-shadow: var(--shadow-sm);
  position: relative;
  transition: transform 0.3s, box-shadow 0.3s;
}

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

.stat-number {
  font-size: 2.6rem;
  font-weight: 800;
  line-height: 1;
  color: var(--deep);
  position: relative;
  display: inline-block;
}

.stat-number::after {
  content: '';
  display: block;
  width: 28px;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--gold));
  margin: 10px auto 0;
  border-radius: 2px;
}

.stat-label {
  font-size: 0.9rem;
  color: var(--muted);
  margin-top: 12px;
  font-weight: 500;
  letter-spacing: 0.5px;
}

/* 内容墙 */
.content-wall {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 26px;
}

.content-wall-item {
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid var(--border-light);
  background: var(--white);
  transition: transform 0.3s, box-shadow 0.3s;
  position: relative;
}

.content-wall-item:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(46,43,37,0.1);
}

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

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

/* 图片上的播放按钮悬浮层 */
.content-wall-item::after {
  content: '';
  position: absolute;
  top: 80px;
  left: 50%;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: rgba(255,255,255,0.9);
  transform: translate(-50%, -50%) scale(0.8);
  opacity: 0;
  transition: opacity 0.3s, transform 0.3s;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%23E85D4A'%3E%3Cpath d='M5 3l8 5-8 5V3z'/%3E%3C/svg%3E");
  background-size: 16px;
  background-position: center;
  background-repeat: no-repeat;
}

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

.content-wall-body {
  padding: 22px;
}

.content-wall-body h3 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 6px;
}

.content-wall-body p {
  font-size: 0.88rem;
  color: var(--muted);
  line-height: 1.6;
}

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

.faq-item {
  border: 1px solid var(--border-light);
  border-radius: 14px;
  margin-bottom: 10px;
  overflow: hidden;
  cursor: pointer;
  background: var(--white);
  transition: border-color 0.3s, box-shadow 0.3s;
}

.faq-item:hover {
  border-color: rgba(232,93,74,0.4);
}

.faq-item.open {
  border-color: rgba(232,93,74,0.5);
  box-shadow: 0 4px 16px rgba(232,93,74,0.06);
}

.faq-item .faq-question {
  padding: 18px 24px;
  font-weight: 700;
  font-size: 1rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}

/* 加号旋转 */
.faq-question::after {
  content: '+';
  font-size: 1.5rem;
  font-weight: 400;
  color: var(--primary);
  transition: transform 0.35s ease;
  line-height: 1;
}

.faq-item.open .faq-question::after {
  transform: rotate(135deg);
}

.faq-item .faq-answer {
  padding: 0 24px 18px;
  display: none;
  color: var(--muted);
  line-height: 1.7;
  font-size: 0.92rem;
}

.faq-item.open .faq-answer {
  display: block;
}

/* CTA横幅 */
.cta-banner {
  padding: 64px 40px;
  text-align: center;
  border-radius: 20px;
  color: #fff;
  background-color: var(--primary);
  background-image:
    radial-gradient(circle at 15% 20%, rgba(255,255,255,0.15) 0%, transparent 40%),
    radial-gradient(circle at 85% 85%, rgba(46,43,37,0.08) 0%, transparent 50%);
  position: relative;
  overflow: hidden;
}

/* 装饰播放符号 */
.cta-banner::before {
  content: '▶';
  position: absolute;
  right: 6%;
  bottom: -30px;
  font-size: 8rem;
  color: rgba(255,255,255,0.1);
  line-height: 1;
  pointer-events: none;
}

.cta-banner::after {
  content: '';
  position: absolute;
  top: -60px;
  left: -60px;
  width: 160px;
  height: 160px;
  border-radius: 50%;
  border: 20px solid rgba(255,255,255,0.05);
  pointer-events: none;
}

.cta-banner h2 {
  color: #fff;
  font-size: 2.2rem;
  font-weight: 800;
  letter-spacing: -0.01em;
  margin-bottom: 10px;
  position: relative;
  z-index: 1;
}

.cta-banner p {
  color: rgba(255,255,255,0.85);
  margin-bottom: 24px;
  position: relative;
  z-index: 1;
}

.cta-banner .btn-primary {
  background: #fff;
  color: var(--primary);
  box-shadow: 0 8px 30px rgba(0,0,0,0.15);
}

.cta-banner .btn-primary:hover {
  background: var(--deep);
  transform: translateY(-2px);
  box-shadow: 0 12px 36px rgba(0,0,0,0.2);
}

/* 页脚 */
.site-footer {
  padding: 64px 0 32px;
  background: var(--bg-alt);
  border-top: 1px solid var(--border-light);
  position: relative;
}

.site-footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--primary), var(--gold), var(--green), transparent);
  opacity: 0.5;
}

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

.footer-brand .logo {
  margin-bottom: 14px;
}

.footer-brand p {
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.8;
  max-width: 260px;
}

.footer-col h4 {
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 16px;
  letter-spacing: 0.5px;
  position: relative;
  padding-bottom: 8px;
}

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

.footer-col a {
  display: block;
  color: var(--muted);
  text-decoration: none;
  font-size: 0.9rem;
  padding: 4px 0;
  transition: color 0.2s, padding-left 0.2s;
}

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

.footer-bottom {
  border-top: 1px solid var(--border-light);
  margin-top: 44px;
  padding-top: 20px;
  text-align: center;
  font-size: 0.85rem;
  color: var(--muted);
}

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

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

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

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

/* ================================================
   响应式
   ================================================ */
@media (max-width: 992px) {
  .hero h1 { font-size: 2.6rem; }
  .section-title { font-size: 2rem; }
  .hero::before { width: 400px; height: 400px; right: 2%; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .cta-banner { padding: 48px 24px; }
}

@media (max-width: 768px) {
  .feature-block { grid-template-columns: 1fr; gap: 40px; }
  .stats-bar { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .main-nav { display: none; }
  .menu-toggle { display: flex; z-index: 1001; }

  .main-nav.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 68px;
    left: 0;
    width: 100%;
    background: rgba(251,247,242,0.97);
    backdrop-filter: blur(20px);
    padding: 24px;
    gap: 16px;
    border-bottom: 1px solid var(--border-light);
    box-shadow: 0 20px 40px rgba(46,43,37,0.08);
    align-items: flex-start;
  }

  .main-nav.open a {
    font-size: 1.1rem;
  }

  .nav-cta {
    align-self: flex-start;
  }

  .hero {
    padding: 120px 0 60px;
    gap: 40px;
  }

  .hero-content { flex-basis: 100%; }
  .hero-image { flex-basis: 100%; }

  .hero::before {
    width: 320px;
    height: 320px;
    opacity: 0.5;
  }

  .content-wall { grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); }
}

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

  .hero h1 { font-size: 2rem; }
  .section-title { font-size: 1.7rem; }
  .stat-number { font-size: 2rem; }

  .cta-banner h2 { font-size: 1.6rem; }
  .cta-banner { padding: 40px 20px; }

  .section { padding: 56px 0; }
}