/* 糖心Vlog 新中式国风美学 主样式 */
:root {
  --ink-black: #1a1208;
  --vermillion: #c0392b;
  --gold: #c9a84c;
  --gold-light: #e8d5a3;
  --rice-white: #f5f0e8;
  --jade-green: #4a7c6f;
  --dark-bg: #0e0c08;
  --card-bg: rgba(26,18,8,0.85);
  --border-gold: rgba(201,168,76,0.4);
  --text-main: #f5f0e8;
  --text-muted: #b8a882;
  --font-serif: 'STSong', 'SimSun', 'Noto Serif SC', Georgia, serif;
  --font-sans: 'PingFang SC', 'Microsoft YaHei', 'Hiragino Sans GB', sans-serif;
}

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

html { scroll-behavior: smooth; }

body {
  background: var(--dark-bg);
  color: var(--text-main);
  font-family: var(--font-sans);
  line-height: 1.8;
  overflow-x: hidden;
}

/* ===== 粒子背景 ===== */
#particles-canvas {
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  pointer-events: none;
  z-index: 0;
  opacity: 0.4;
}

/* ===== 导航 ===== */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: rgba(14,12,8,0.92);
  border-bottom: 1px solid var(--border-gold);
  backdrop-filter: blur(12px);
}

.nav-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}

.logo-text {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  color: var(--gold);
  letter-spacing: 4px;
  text-shadow: 0 0 20px rgba(201,168,76,0.5);
}

.logo-sub {
  font-size: 0.7rem;
  color: var(--text-muted);
  letter-spacing: 2px;
}

.main-nav {
  display: flex;
  list-style: none;
  gap: 8px;
}

.main-nav a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.9rem;
  padding: 8px 14px;
  border-radius: 2px;
  transition: all 0.3s;
  letter-spacing: 1px;
  position: relative;
}

.main-nav a::after {
  content: '';
  position: absolute;
  bottom: 4px; left: 14px; right: 14px;
  height: 1px;
  background: var(--gold);
  transform: scaleX(0);
  transition: transform 0.3s;
}

.main-nav a:hover { color: var(--gold); }
.main-nav a:hover::after { transform: scaleX(1); }
.main-nav a.active { color: var(--gold); }
.main-nav a.active::after { transform: scaleX(1); }

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

.hamburger span {
  display: block;
  width: 24px; height: 2px;
  background: var(--gold);
  transition: all 0.3s;
}

/* ===== 搜索框 ===== */
.search-bar-wrap {
  background: rgba(26,18,8,0.7);
  border-bottom: 1px solid var(--border-gold);
  padding: 10px 0;
  position: sticky;
  top: 70px;
  z-index: 999;
}

.search-inner {
  max-width: 700px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.search-input {
  flex: 1;
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--border-gold);
  color: var(--text-main);
  padding: 9px 18px;
  font-family: var(--font-serif);
  font-size: 0.9rem;
  letter-spacing: 2px;
  outline: none;
  border-radius: 2px;
  transition: border-color 0.3s;
}

.search-input::placeholder { color: var(--text-muted); }
.search-input:focus { border-color: var(--gold); }

.search-btn {
  background: var(--vermillion);
  border: none;
  color: var(--rice-white);
  padding: 9px 22px;
  font-family: var(--font-serif);
  font-size: 0.9rem;
  letter-spacing: 2px;
  cursor: pointer;
  border-radius: 2px;
  transition: background 0.3s;
}

.search-btn:hover { background: #a93226; }

/* ===== 主内容区 ===== */
.main-content { padding-top: 70px; }

/* ===== Banner ===== */
.hero-banner {
  position: relative;
  height: 100vh;
  min-height: 600px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  filter: brightness(0.6);
  transform: scale(1.05);
  transition: transform 8s ease;
}

.hero-banner:hover .hero-bg { transform: scale(1.0); }

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, rgba(14,12,8,0.3) 0%, rgba(14,12,8,0.7) 100%);
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: 0 24px;
}

.hero-tag {
  display: inline-block;
  border: 1px solid var(--gold);
  color: var(--gold);
  font-size: 0.75rem;
  letter-spacing: 6px;
  padding: 5px 20px;
  margin-bottom: 24px;
}

.hero-title {
  font-family: var(--font-serif);
  font-size: clamp(2.5rem, 6vw, 5rem);
  color: var(--rice-white);
  letter-spacing: 8px;
  line-height: 1.3;
  text-shadow: 0 4px 30px rgba(0,0,0,0.8);
  margin-bottom: 16px;
}

.hero-title span { color: var(--gold); }

.hero-subtitle {
  font-family: var(--font-serif);
  font-size: clamp(1rem, 2vw, 1.4rem);
  color: var(--text-muted);
  letter-spacing: 4px;
  margin-bottom: 40px;
}

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

.btn-primary {
  background: var(--vermillion);
  color: var(--rice-white);
  border: none;
  padding: 14px 36px;
  font-family: var(--font-serif);
  font-size: 1rem;
  letter-spacing: 4px;
  cursor: pointer;
  text-decoration: none;
  display: inline-block;
  transition: all 0.3s;
  position: relative;
  overflow: hidden;
}

.btn-primary::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, transparent 40%, rgba(255,255,255,0.15) 50%, transparent 60%);
  transform: translateX(-100%);
  transition: transform 0.5s;
}

.btn-primary:hover::before { transform: translateX(100%); }
.btn-primary:hover { background: #a93226; }

.btn-outline {
  background: transparent;
  color: var(--gold);
  border: 1px solid var(--gold);
  padding: 14px 36px;
  font-family: var(--font-serif);
  font-size: 1rem;
  letter-spacing: 4px;
  cursor: pointer;
  text-decoration: none;
  display: inline-block;
  transition: all 0.3s;
}

.btn-outline:hover { background: var(--gold); color: var(--dark-bg); }

/* ===== 通用区块 ===== */
.section {
  padding: 80px 0;
  position: relative;
  z-index: 1;
}

.section-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
}

.section-header {
  text-align: center;
  margin-bottom: 56px;
}

.section-tag {
  display: inline-block;
  color: var(--vermillion);
  font-size: 0.75rem;
  letter-spacing: 6px;
  text-transform: uppercase;
  margin-bottom: 12px;
}

.section-title {
  font-family: var(--font-serif);
  font-size: clamp(1.8rem, 3vw, 2.8rem);
  color: var(--rice-white);
  letter-spacing: 6px;
  margin-bottom: 16px;
}

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

.section-divider {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  margin-bottom: 16px;
}

.section-divider::before,
.section-divider::after {
  content: '';
  width: 60px;
  height: 1px;
  background: linear-gradient(to right, transparent, var(--gold));
}

.section-divider::after {
  background: linear-gradient(to left, transparent, var(--gold));
}

.section-divider-icon {
  color: var(--gold);
  font-size: 1rem;
}

.section-desc {
  color: var(--text-muted);
  font-size: 0.95rem;
  letter-spacing: 2px;
  max-width: 600px;
  margin: 0 auto;
}

/* ===== 视频卡片 ===== */
.video-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
}

.video-card {
  background: var(--card-bg);
  border: 1px solid var(--border-gold);
  border-radius: 4px;
  overflow: hidden;
  cursor: pointer;
  transition: transform 0.3s, box-shadow 0.3s;
  position: relative;
}

.video-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 20px 60px rgba(201,168,76,0.2);
}

.video-thumb {
  position: relative;
  padding-top: 56.25%;
  overflow: hidden;
}

.video-thumb img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s;
}

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

/* 水墨晕染悬停效果 */
.video-ink-overlay {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at center, rgba(201,168,76,0.15) 0%, rgba(14,12,8,0.6) 70%);
  opacity: 0;
  transition: opacity 0.4s;
  display: flex;
  align-items: center;
  justify-content: center;
}

.video-card:hover .video-ink-overlay { opacity: 1; }

.play-btn {
  width: 56px; height: 56px;
  border: 2px solid var(--gold);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(201,168,76,0.2);
  backdrop-filter: blur(4px);
  transition: all 0.3s;
}

.play-btn svg { fill: var(--gold); width: 22px; height: 22px; margin-left: 4px; }
.video-card:hover .play-btn { background: rgba(201,168,76,0.4); transform: scale(1.1); }

/* 鎏金光影效果 */
.video-gold-shine {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, transparent 0%, rgba(201,168,76,0.08) 50%, transparent 100%);
  opacity: 0;
  transition: opacity 0.4s;
}

.video-card:hover .video-gold-shine { opacity: 1; }

.video-info {
  padding: 16px;
}

.video-title {
  font-family: var(--font-serif);
  font-size: 1rem;
  color: var(--rice-white);
  letter-spacing: 1px;
  margin-bottom: 10px;
  line-height: 1.5;
}

.video-meta {
  display: flex;
  gap: 16px;
  color: var(--text-muted);
  font-size: 0.8rem;
}

.video-meta span { display: flex; align-items: center; gap: 4px; }

.video-tags {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  margin-top: 10px;
}

.video-tag {
  background: rgba(201,168,76,0.1);
  border: 1px solid rgba(201,168,76,0.3);
  color: var(--gold);
  font-size: 0.72rem;
  padding: 2px 8px;
  letter-spacing: 1px;
}

/* ===== 品牌故事 ===== */
.story-section {
  background: linear-gradient(135deg, rgba(26,18,8,0.9) 0%, rgba(74,124,111,0.1) 100%);
  border-top: 1px solid var(--border-gold);
  border-bottom: 1px solid var(--border-gold);
}

.story-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.story-image {
  position: relative;
  border: 1px solid var(--border-gold);
  overflow: hidden;
}

.story-image img {
  width: 100%;
  display: block;
  filter: sepia(20%) brightness(0.85);
  transition: filter 0.5s;
}

.story-image:hover img { filter: sepia(0%) brightness(1); }

.story-image::before {
  content: '';
  position: absolute;
  inset: 8px;
  border: 1px solid rgba(201,168,76,0.3);
  z-index: 1;
  pointer-events: none;
}

.story-content h3 {
  font-family: var(--font-serif);
  font-size: 1.8rem;
  color: var(--gold);
  letter-spacing: 4px;
  margin-bottom: 20px;
}

.story-content p {
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 2;
  letter-spacing: 1px;
  margin-bottom: 16px;
}

.story-quote {
  border-left: 3px solid var(--vermillion);
  padding-left: 20px;
  font-family: var(--font-serif);
  font-size: 1.1rem;
  color: var(--rice-white);
  letter-spacing: 3px;
  margin: 24px 0;
  font-style: italic;
}

/* ===== 影像模块 ===== */
.image-wall {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.image-wall-item {
  position: relative;
  overflow: hidden;
  cursor: pointer;
}

.image-wall-item:first-child {
  grid-column: span 2;
  grid-row: span 2;
}

.image-wall-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.5s;
  min-height: 200px;
}

.image-wall-item:hover img { transform: scale(1.05); }

.image-wall-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(14,12,8,0.7) 0%, transparent 60%);
  opacity: 0;
  transition: opacity 0.3s;
  display: flex;
  align-items: flex-end;
  padding: 16px;
}

.image-wall-item:hover .image-wall-overlay { opacity: 1; }

.image-wall-title {
  font-family: var(--font-serif);
  color: var(--rice-white);
  font-size: 0.9rem;
  letter-spacing: 2px;
}

/* ===== AI模块 ===== */
.ai-section {
  background: linear-gradient(135deg, rgba(14,12,8,0.95) 0%, rgba(26,18,8,0.9) 100%);
  position: relative;
  overflow: hidden;
}

.ai-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: url('/images/ai_module_bg.jpg');
  background-size: cover;
  background-position: center;
  opacity: 0.15;
}

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

.ai-feature-card {
  background: rgba(26,18,8,0.7);
  border: 1px solid var(--border-gold);
  padding: 32px 24px;
  text-align: center;
  transition: all 0.3s;
  position: relative;
  overflow: hidden;
}

.ai-feature-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(to right, transparent, var(--gold), transparent);
  transform: scaleX(0);
  transition: transform 0.3s;
}

.ai-feature-card:hover::before { transform: scaleX(1); }
.ai-feature-card:hover { transform: translateY(-4px); box-shadow: 0 12px 40px rgba(201,168,76,0.15); }

.ai-icon {
  font-size: 2.5rem;
  margin-bottom: 16px;
  display: block;
}

.ai-feature-title {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  color: var(--gold);
  letter-spacing: 3px;
  margin-bottom: 12px;
}

.ai-feature-desc {
  color: var(--text-muted);
  font-size: 0.88rem;
  line-height: 1.8;
  letter-spacing: 1px;
}

/* ===== 达人模块 ===== */
.creators-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 24px;
}

.creator-card {
  background: var(--card-bg);
  border: 1px solid var(--border-gold);
  padding: 24px;
  text-align: center;
  transition: all 0.3s;
}

.creator-card:hover {
  transform: translateY(-4px);
  border-color: var(--gold);
}

.creator-avatar {
  width: 80px; height: 80px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--gold);
  margin: 0 auto 16px;
  display: block;
}

.creator-name {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  color: var(--rice-white);
  letter-spacing: 2px;
  margin-bottom: 6px;
}

.creator-title {
  color: var(--vermillion);
  font-size: 0.8rem;
  letter-spacing: 2px;
  margin-bottom: 10px;
}

.creator-desc {
  color: var(--text-muted);
  font-size: 0.82rem;
  line-height: 1.7;
}

/* ===== 评价模块 ===== */
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.review-card {
  background: var(--card-bg);
  border: 1px solid var(--border-gold);
  padding: 24px;
  position: relative;
  transition: all 0.3s;
}

.review-card:hover {
  border-color: var(--gold);
  transform: translateY(-3px);
}

.review-quote {
  font-size: 2rem;
  color: var(--vermillion);
  line-height: 1;
  margin-bottom: 12px;
  font-family: Georgia, serif;
}

.review-content {
  color: var(--text-muted);
  font-size: 0.9rem;
  line-height: 1.8;
  letter-spacing: 1px;
  margin-bottom: 16px;
}

.review-user {
  display: flex;
  align-items: center;
  gap: 10px;
}

.review-avatar {
  width: 36px; height: 36px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--vermillion), var(--gold));
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 0.85rem;
  font-family: var(--font-serif);
}

.review-name {
  font-family: var(--font-serif);
  color: var(--rice-white);
  font-size: 0.9rem;
  letter-spacing: 2px;
}

.review-stars {
  color: var(--gold);
  font-size: 0.75rem;
  margin-left: auto;
}

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

.faq-item {
  border: 1px solid var(--border-gold);
  margin-bottom: 12px;
  overflow: hidden;
  transition: border-color 0.3s;
}

.faq-item.active { border-color: var(--gold); }

.faq-question {
  padding: 18px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  font-family: var(--font-serif);
  font-size: 1rem;
  color: var(--rice-white);
  letter-spacing: 1px;
  transition: color 0.3s;
}

.faq-question:hover { color: var(--gold); }
.faq-item.active .faq-question { color: var(--gold); }

.faq-icon {
  width: 20px; height: 20px;
  border: 1px solid var(--gold);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: var(--gold);
  font-size: 0.8rem;
  transition: transform 0.3s;
}

.faq-item.active .faq-icon { transform: rotate(45deg); }

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

.faq-answer-inner {
  padding: 0 24px 18px;
  color: var(--text-muted);
  font-size: 0.9rem;
  line-height: 1.9;
  letter-spacing: 1px;
}

/* ===== 合作模块 ===== */
.partners-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 20px;
  margin-bottom: 48px;
}

.partner-item {
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border-gold);
  padding: 20px;
  text-align: center;
  font-family: var(--font-serif);
  color: var(--text-muted);
  font-size: 0.9rem;
  letter-spacing: 2px;
  transition: all 0.3s;
}

.partner-item:hover { border-color: var(--gold); color: var(--gold); }

/* ===== 联系模块 ===== */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 32px;
}

.contact-card {
  background: var(--card-bg);
  border: 1px solid var(--border-gold);
  padding: 32px;
  text-align: center;
}

.contact-icon { font-size: 2rem; margin-bottom: 16px; display: block; }

.contact-title {
  font-family: var(--font-serif);
  font-size: 1rem;
  color: var(--gold);
  letter-spacing: 3px;
  margin-bottom: 12px;
}

.contact-info {
  color: var(--text-muted);
  font-size: 0.88rem;
  line-height: 1.8;
  letter-spacing: 1px;
}

/* ===== 页脚 ===== */
.site-footer {
  background: rgba(10,8,5,0.98);
  border-top: 1px solid var(--border-gold);
  padding: 48px 0 24px;
  position: relative;
  z-index: 1;
}

.footer-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
}

.footer-top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 40px;
  border-bottom: 1px solid var(--border-gold);
  margin-bottom: 32px;
}

.footer-brand .logo-text {
  font-size: 1.3rem;
  display: block;
  margin-bottom: 12px;
}

.footer-brand p {
  color: var(--text-muted);
  font-size: 0.85rem;
  line-height: 1.8;
  letter-spacing: 1px;
}

.footer-col h4 {
  font-family: var(--font-serif);
  color: var(--gold);
  font-size: 0.9rem;
  letter-spacing: 3px;
  margin-bottom: 16px;
}

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

.footer-col ul li {
  margin-bottom: 8px;
}

.footer-col ul li a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.85rem;
  letter-spacing: 1px;
  transition: color 0.3s;
}

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

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

.footer-copy {
  color: var(--text-muted);
  font-size: 0.8rem;
  letter-spacing: 1px;
}

.footer-copy a { color: var(--gold); text-decoration: none; }

.footer-icp {
  color: var(--text-muted);
  font-size: 0.78rem;
  letter-spacing: 1px;
}

.footer-social {
  display: flex;
  gap: 12px;
}

.social-link {
  width: 32px; height: 32px;
  border: 1px solid var(--border-gold);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.75rem;
  transition: all 0.3s;
}

.social-link:hover { border-color: var(--gold); color: var(--gold); }

/* ===== 内页 ===== */
.page-hero {
  height: 320px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  margin-top: 70px;
}

.page-hero-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  filter: brightness(0.5);
}

.page-hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, rgba(14,12,8,0.4), rgba(14,12,8,0.8));
}

.page-hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
}

.page-hero-title {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 4vw, 3.5rem);
  color: var(--rice-white);
  letter-spacing: 8px;
  margin-bottom: 12px;
}

.page-hero-sub {
  color: var(--text-muted);
  font-size: 0.9rem;
  letter-spacing: 4px;
}

.breadcrumb {
  padding: 12px 0;
  border-bottom: 1px solid var(--border-gold);
  position: relative;
  z-index: 1;
}

.breadcrumb-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.82rem;
  color: var(--text-muted);
}

.breadcrumb a {
  color: var(--text-muted);
  text-decoration: none;
  transition: color 0.3s;
}

.breadcrumb a:hover { color: var(--gold); }
.breadcrumb .current { color: var(--gold); }
.breadcrumb .sep { color: var(--border-gold); }

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .story-grid { grid-template-columns: 1fr; }
  .footer-top { grid-template-columns: 1fr 1fr; }
  .ai-features { grid-template-columns: 1fr 1fr; }
  .reviews-grid { grid-template-columns: 1fr 1fr; }
  .contact-grid { grid-template-columns: 1fr 1fr; }
  .partners-grid { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 768px) {
  .main-nav { display: none; }
  .hamburger { display: flex; }
  .main-nav.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 70px; left: 0; right: 0;
    background: rgba(14,12,8,0.98);
    border-bottom: 1px solid var(--border-gold);
    padding: 16px 24px;
  }
  .video-grid { grid-template-columns: 1fr 1fr; }
  .image-wall { grid-template-columns: 1fr 1fr; }
  .image-wall-item:first-child { grid-column: span 1; grid-row: span 1; }
  .ai-features { grid-template-columns: 1fr; }
  .reviews-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .footer-top { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .partners-grid { grid-template-columns: repeat(2, 1fr); }
  .creators-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 480px) {
  .video-grid { grid-template-columns: 1fr; }
  .image-wall { grid-template-columns: 1fr; }
  .hero-title { font-size: 2rem; }
  .creators-grid { grid-template-columns: 1fr; }
}

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

@keyframes inkDrop {
  0% { opacity: 0; transform: scale(0) rotate(-10deg); }
  50% { opacity: 0.8; }
  100% { opacity: 0; transform: scale(3) rotate(10deg); }
}

.fade-in-up { animation: fadeInUp 0.8s ease forwards; }

.lazy-img {
  opacity: 0;
  transition: opacity 0.5s;
}

.lazy-img.loaded { opacity: 1; }

/* ===== 装饰元素 ===== */
.cloud-pattern {
  position: absolute;
  width: 100%;
  height: 60px;
  bottom: 0;
  left: 0;
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1440 60'%3E%3Cpath fill='%230e0c08' d='M0,30 C240,60 480,0 720,30 C960,60 1200,0 1440,30 L1440,60 L0,60 Z'/%3E%3C/svg%3E") no-repeat bottom;
  background-size: cover;
}

/* ===== 滚动条 ===== */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--dark-bg); }
::-webkit-scrollbar-thumb { background: var(--gold); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--vermillion); }

/* ===== 选中文字 ===== */
::selection { background: var(--vermillion); color: var(--rice-white); }