/* ============================================
   糖心vlog 原创样式表 - 电影胶片主题
   域名: st-wedding.cn
   配色: 墨黑 #0C0C0E + 胭脂红 #E8475F + 暖金 #D4A853
   布局: 顶部全宽导航 + 双栏瀑布流 + 底部影院风格
   ============================================ */

/* === 基础重置与变量 === */
:root {
  --ink-black: #0C0C0E;
  --charcoal: #161619;
  --slate: #1E1E23;
  --rouge: #E8475F;
  --rouge-light: #FF6B7F;
  --gold: #D4A853;
  --gold-light: #F0C97A;
  --ivory: #F5F0E8;
  --mist: #A8A3B3;
  --dim: #6B6680;
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --shadow-card: 0 4px 24px rgba(0,0,0,0.4);
  --shadow-hover: 0 8px 40px rgba(232,71,95,0.2);
  --transition: all 0.35s cubic-bezier(0.4,0,0.2,1);
  --font-main: 'PingFang SC','Hiragino Sans GB','Microsoft YaHei','Helvetica Neue',Arial,sans-serif;
  --max-width: 1280px;
}

*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: var(--font-main);
  background: var(--ink-black);
  color: var(--ivory);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--gold); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--gold-light); }

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

.container { max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }

/* === 顶部导航 - 电影院风格 === */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: linear-gradient(180deg, rgba(12,12,14,0.98) 0%, rgba(12,12,14,0.85) 100%);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(212,168,83,0.15);
  padding: 0;
}

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

.logo-wrap {
  display: flex;
  align-items: center;
  gap: 10px;
}

.logo-wrap img {
  height: 36px;
  width: auto;
}

.logo-text {
  font-size: 1.3rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--rouge), var(--gold));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: 1px;
}

.main-nav { display: flex; align-items: center; gap: 0; }

.main-nav a {
  color: var(--mist);
  font-size: 0.9rem;
  padding: 22px 16px;
  position: relative;
  letter-spacing: 0.5px;
  transition: var(--transition);
}

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

.main-nav a:hover,
.main-nav a.active {
  color: var(--ivory);
}

.main-nav a:hover::after,
.main-nav a.active::after {
  width: 60%;
}

.mobile-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 8px;
}

.mobile-toggle span {
  width: 24px;
  height: 2px;
  background: var(--ivory);
  transition: var(--transition);
  border-radius: 2px;
}

/* === Hero区域 - 宽银幕风格 === */
.hero-section {
  position: relative;
  min-height: 85vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  margin-top: 68px;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background: url('../images/hero-banner.webp') center/cover no-repeat;
  z-index: 0;
}

.hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(12,12,14,0.3) 0%, rgba(12,12,14,0.7) 60%, var(--ink-black) 100%);
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 800px;
  padding: 40px 24px;
}

.hero-badge {
  display: inline-block;
  background: rgba(232,71,95,0.15);
  border: 1px solid rgba(232,71,95,0.3);
  color: var(--rouge-light);
  font-size: 0.8rem;
  padding: 6px 18px;
  border-radius: 30px;
  margin-bottom: 20px;
  letter-spacing: 2px;
  text-transform: uppercase;
}

.hero-content h1 {
  font-size: 3.2rem;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 16px;
  background: linear-gradient(135deg, var(--ivory) 0%, var(--gold-light) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-content p {
  font-size: 1.15rem;
  color: var(--mist);
  margin-bottom: 32px;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.hero-btns {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: linear-gradient(135deg, var(--rouge), #C93A50);
  color: #fff;
  padding: 14px 32px;
  border-radius: var(--radius-sm);
  font-size: 1rem;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: var(--transition);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 30px rgba(232,71,95,0.4);
  color: #fff;
}

.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: transparent;
  color: var(--gold);
  padding: 14px 32px;
  border-radius: var(--radius-sm);
  font-size: 1rem;
  font-weight: 600;
  border: 1px solid var(--gold);
  cursor: pointer;
  transition: var(--transition);
}

.btn-outline:hover {
  background: rgba(212,168,83,0.1);
  transform: translateY(-2px);
  color: var(--gold-light);
}

/* === 搜索栏 === */
.search-bar {
  max-width: 560px;
  margin: 24px auto 0;
  position: relative;
}

.search-bar input {
  width: 100%;
  padding: 14px 50px 14px 20px;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 40px;
  color: var(--ivory);
  font-size: 0.95rem;
  outline: none;
  transition: var(--transition);
}

.search-bar input:focus {
  border-color: var(--rouge);
  background: rgba(255,255,255,0.12);
}

.search-bar button {
  position: absolute;
  right: 6px;
  top: 50%;
  transform: translateY(-50%);
  background: var(--rouge);
  border: none;
  color: #fff;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  cursor: pointer;
  font-size: 1.1rem;
  transition: var(--transition);
}

/* === 通用区块标题 === */
.section-title {
  text-align: center;
  margin-bottom: 48px;
}

.section-title h2 {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--ivory);
}

.section-title h2 span {
  color: var(--rouge);
}

.section-title p {
  color: var(--mist);
  font-size: 1rem;
  max-width: 600px;
  margin: 0 auto;
}

.title-line {
  width: 60px;
  height: 3px;
  background: linear-gradient(90deg, var(--rouge), var(--gold));
  margin: 16px auto 0;
  border-radius: 3px;
}

/* === 视频卡片网格 === */
.video-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.video-card {
  background: var(--charcoal);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: var(--transition);
  border: 1px solid rgba(255,255,255,0.05);
}

.video-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-hover);
  border-color: rgba(232,71,95,0.2);
}

.video-thumb {
  position: relative;
  aspect-ratio: 16/9;
  overflow: hidden;
}

.video-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.video-card:hover .video-thumb img {
  transform: scale(1.08);
}

.play-btn {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) scale(0);
  width: 56px;
  height: 56px;
  background: rgba(232,71,95,0.9);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
  cursor: pointer;
}

.play-btn::after {
  content: '';
  display: block;
  width: 0;
  height: 0;
  border-style: solid;
  border-width: 10px 0 10px 18px;
  border-color: transparent transparent transparent #fff;
  margin-left: 3px;
}

.video-card:hover .play-btn {
  transform: translate(-50%, -50%) scale(1);
}

.video-duration {
  position: absolute;
  bottom: 8px;
  right: 8px;
  background: rgba(0,0,0,0.75);
  color: #fff;
  font-size: 0.75rem;
  padding: 2px 8px;
  border-radius: 4px;
}

.video-info {
  padding: 16px;
}

.video-info h3 {
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--ivory);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.video-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.8rem;
  color: var(--dim);
}

.video-rating {
  color: var(--gold);
  font-size: 0.8rem;
}

.video-desc {
  font-size: 0.8rem;
  color: var(--mist);
  margin-top: 8px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* === 精选推荐 - 大卡片 === */
.featured-section { padding: 80px 0; }

.featured-card {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  background: var(--charcoal);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid rgba(255,255,255,0.05);
}

.featured-card .video-thumb {
  aspect-ratio: auto;
  min-height: 400px;
}

.featured-card .featured-info {
  padding: 40px 40px 40px 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.featured-info .tag {
  display: inline-block;
  background: rgba(232,71,95,0.15);
  color: var(--rouge-light);
  font-size: 0.8rem;
  padding: 4px 14px;
  border-radius: 20px;
  margin-bottom: 16px;
  width: fit-content;
}

.featured-info h3 {
  font-size: 1.6rem;
  font-weight: 700;
  margin-bottom: 16px;
  color: var(--ivory);
}

.featured-info p {
  color: var(--mist);
  margin-bottom: 24px;
  line-height: 1.8;
}

/* === 频道分类 === */
.channels-section { padding: 80px 0; background: var(--charcoal); }

.channel-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.channel-card {
  background: var(--slate);
  border-radius: var(--radius-md);
  padding: 32px 24px;
  text-align: center;
  transition: var(--transition);
  border: 1px solid rgba(255,255,255,0.05);
  cursor: pointer;
}

.channel-card:hover {
  transform: translateY(-4px);
  border-color: var(--rouge);
  box-shadow: var(--shadow-hover);
}

.channel-icon {
  width: 56px;
  height: 56px;
  background: linear-gradient(135deg, var(--rouge), var(--gold));
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
  font-size: 1.5rem;
}

.channel-card h3 {
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--ivory);
}

.channel-card p {
  font-size: 0.85rem;
  color: var(--dim);
}

/* === 专家团队 === */
.experts-section { padding: 80px 0; }

.expert-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.expert-card {
  background: var(--charcoal);
  border-radius: var(--radius-md);
  padding: 32px;
  text-align: center;
  border: 1px solid rgba(255,255,255,0.05);
  transition: var(--transition);
}

.expert-card:hover {
  border-color: rgba(212,168,83,0.3);
}

.expert-avatar {
  width: 100px;
  height: 100px;
  border-radius: 50%;
  object-fit: cover;
  margin: 0 auto 16px;
  border: 3px solid var(--gold);
}

.expert-card h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 4px;
  color: var(--ivory);
}

.expert-role {
  font-size: 0.85rem;
  color: var(--rouge-light);
  margin-bottom: 12px;
}

.expert-card p {
  font-size: 0.85rem;
  color: var(--mist);
  line-height: 1.7;
}

/* === 用户评价 === */
.reviews-section { padding: 80px 0; background: var(--charcoal); }

.review-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.review-card {
  background: var(--slate);
  border-radius: var(--radius-md);
  padding: 28px;
  border: 1px solid rgba(255,255,255,0.05);
}

.review-stars {
  color: var(--gold);
  font-size: 0.9rem;
  margin-bottom: 12px;
}

.review-card blockquote {
  font-size: 0.9rem;
  color: var(--mist);
  line-height: 1.8;
  margin-bottom: 16px;
  font-style: italic;
}

.review-author {
  display: flex;
  align-items: center;
  gap: 12px;
}

.review-author-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--rouge), var(--gold));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 700;
  font-size: 0.9rem;
}

.review-author-info strong {
  display: block;
  font-size: 0.9rem;
  color: var(--ivory);
}

.review-author-info span {
  font-size: 0.75rem;
  color: var(--dim);
}

/* === 关于我们 === */
.about-section { padding: 80px 0; }

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}

.about-text h3 {
  font-size: 1.4rem;
  font-weight: 700;
  margin-bottom: 16px;
  color: var(--ivory);
}

.about-text p {
  color: var(--mist);
  margin-bottom: 16px;
  line-height: 1.8;
}

.about-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 24px;
}

.stat-item {
  text-align: center;
  padding: 16px;
  background: var(--charcoal);
  border-radius: var(--radius-sm);
}

.stat-item .num {
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--rouge);
  display: block;
}

.stat-item .label {
  font-size: 0.8rem;
  color: var(--dim);
  margin-top: 4px;
}

/* === 资质合规 === */
.compliance-section { padding: 60px 0; background: var(--charcoal); }

.compliance-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.compliance-item {
  background: var(--slate);
  border-radius: var(--radius-sm);
  padding: 24px;
  text-align: center;
  border: 1px solid rgba(255,255,255,0.05);
}

.compliance-item .icon {
  font-size: 2rem;
  margin-bottom: 12px;
}

.compliance-item h4 {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--ivory);
  margin-bottom: 6px;
}

.compliance-item p {
  font-size: 0.8rem;
  color: var(--dim);
}

/* === FAQ === */
.faq-section { padding: 80px 0; }

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

.faq-item {
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

.faq-question {
  width: 100%;
  background: none;
  border: none;
  color: var(--ivory);
  font-size: 1rem;
  font-weight: 600;
  padding: 20px 0;
  text-align: left;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-main);
  transition: var(--transition);
}

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

.faq-arrow {
  font-size: 1.2rem;
  transition: transform 0.3s ease;
  color: var(--dim);
}

.faq-item.active .faq-arrow {
  transform: rotate(180deg);
  color: var(--rouge);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease;
}

.faq-answer p {
  padding: 0 0 20px;
  color: var(--mist);
  font-size: 0.9rem;
  line-height: 1.8;
}

/* === 热门标签 === */
.tags-section { padding: 60px 0; background: var(--charcoal); }

.tags-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
}

.tags-cloud a {
  display: inline-block;
  padding: 8px 20px;
  background: var(--slate);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 30px;
  color: var(--mist);
  font-size: 0.85rem;
  transition: var(--transition);
}

.tags-cloud a:hover {
  background: rgba(232,71,95,0.15);
  border-color: var(--rouge);
  color: var(--rouge-light);
}

/* === 下载区域 === */
.download-section { padding: 80px 0; }

.download-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}

.download-info h3 {
  font-size: 1.6rem;
  font-weight: 700;
  margin-bottom: 16px;
  color: var(--ivory);
}

.download-info p {
  color: var(--mist);
  margin-bottom: 24px;
  line-height: 1.8;
}

.download-btns {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

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

.download-mockup img {
  max-height: 480px;
  margin: 0 auto;
}

/* === 支付方式 === */
.payment-section { padding: 60px 0; }

.payment-grid {
  display: flex;
  gap: 24px;
  justify-content: center;
  flex-wrap: wrap;
}

.payment-item {
  background: var(--charcoal);
  border-radius: var(--radius-sm);
  padding: 20px 32px;
  text-align: center;
  border: 1px solid rgba(255,255,255,0.05);
  min-width: 140px;
}

.payment-item .icon { font-size: 1.8rem; margin-bottom: 8px; }
.payment-item span { font-size: 0.85rem; color: var(--mist); display: block; }

/* === 负责任观影 === */
.responsible-section {
  padding: 40px 0;
  background: rgba(232,71,95,0.05);
  border-top: 1px solid rgba(232,71,95,0.1);
  border-bottom: 1px solid rgba(232,71,95,0.1);
}

.responsible-inner {
  text-align: center;
  max-width: 700px;
  margin: 0 auto;
}

.responsible-inner h3 {
  font-size: 1.1rem;
  color: var(--rouge-light);
  margin-bottom: 12px;
}

.responsible-inner p {
  font-size: 0.85rem;
  color: var(--mist);
  line-height: 1.8;
}

/* === 页脚 === */
.site-footer {
  background: var(--charcoal);
  border-top: 1px solid rgba(255,255,255,0.05);
  padding: 60px 0 0;
}

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

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

.footer-brand p {
  font-size: 0.85rem;
  color: var(--dim);
  line-height: 1.7;
}

.footer-col h4 {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--ivory);
  margin-bottom: 16px;
}

.footer-col ul { list-style: none; }

.footer-col ul li { margin-bottom: 10px; }

.footer-col ul li a {
  color: var(--dim);
  font-size: 0.85rem;
  transition: var(--transition);
}

.footer-col ul li a:hover { color: var(--rouge-light); }

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.05);
  padding: 20px 0;
  text-align: center;
  font-size: 0.8rem;
  color: var(--dim);
}

.footer-bottom a { color: var(--dim); }
.footer-bottom a:hover { color: var(--rouge-light); }

/* === 面包屑 === */
.breadcrumb {
  padding: 16px 0;
  font-size: 0.85rem;
  color: var(--dim);
}

.breadcrumb a { color: var(--mist); }
.breadcrumb a:hover { color: var(--rouge-light); }
.breadcrumb span { margin: 0 8px; }

/* === 内页布局 === */
.inner-hero {
  padding: 120px 0 40px;
  background: linear-gradient(180deg, var(--charcoal) 0%, var(--ink-black) 100%);
}

.inner-hero h1 {
  font-size: 2.2rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.inner-hero p {
  color: var(--mist);
  max-width: 700px;
}

.inner-content {
  padding: 48px 0 80px;
}

.content-article {
  max-width: 900px;
}

.content-article h2 {
  font-size: 1.5rem;
  font-weight: 700;
  margin: 32px 0 16px;
  color: var(--ivory);
}

.content-article h3 {
  font-size: 1.2rem;
  font-weight: 600;
  margin: 24px 0 12px;
  color: var(--ivory);
}

.content-article p {
  color: var(--mist);
  margin-bottom: 16px;
  line-height: 1.8;
}

/* === 响应式 === */
@media (max-width: 1024px) {
  .video-grid { grid-template-columns: repeat(3, 1fr); }
  .channel-grid { grid-template-columns: repeat(3, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
}

@media (max-width: 768px) {
  .header-inner { height: 56px; }
  .main-nav {
    position: fixed;
    top: 56px;
    left: 0;
    right: 0;
    background: var(--ink-black);
    flex-direction: column;
    padding: 16px 0;
    transform: translateY(-120%);
    transition: var(--transition);
    border-bottom: 1px solid rgba(255,255,255,0.05);
  }
  .main-nav.open { transform: translateY(0); }
  .main-nav a { padding: 12px 24px; }
  .mobile-toggle { display: flex; }

  .hero-section { min-height: 70vh; margin-top: 56px; }
  .hero-content h1 { font-size: 2rem; }

  .video-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
  .channel-grid { grid-template-columns: repeat(2, 1fr); }
  .expert-grid { grid-template-columns: 1fr; }
  .review-grid { grid-template-columns: 1fr; }
  .about-grid { grid-template-columns: 1fr; }
  .featured-card { grid-template-columns: 1fr; }
  .featured-card .featured-info { padding: 24px; }
  .download-grid { grid-template-columns: 1fr; }
  .compliance-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
  .video-grid { grid-template-columns: 1fr; }
  .channel-grid { grid-template-columns: 1fr; }
  .hero-content h1 { font-size: 1.6rem; }
  .compliance-grid { grid-template-columns: 1fr; }
  .about-stats { grid-template-columns: 1fr; }
}