/* 樱花视频 - 复古摄影美学风格 CSS */
/* 全局字体与颜色变量 */
:root {
  --cream: #f5f0e8;
  --beige: #e8dcc8;
  --warm-brown: #5c3d2e;
  --dark-brown: #2c1a0e;
  --warm-orange: #c8784a;
  --dark-red: #8b2e2e;
  --soft-gray: #9e9080;
  --film-black: #1a1208;
  --gold: #b8963e;
  --light-cream: #faf6ef;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'STSong', 'SimSun', 'Noto Serif SC', Georgia, serif;
  background-color: var(--cream);
  color: var(--dark-brown);
  line-height: 1.8;
  font-size: 16px;
  overflow-x: hidden;
}

/* 胶片颗粒纹理叠加层 */
body::before {
  content: '';
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='0.04'/%3E%3C/svg%3E");
  pointer-events: none;
  z-index: 9999;
  opacity: 0.35;
}

/* 链接样式 */
a {
  color: var(--warm-brown);
  text-decoration: none;
  transition: color 0.3s ease;
}
a:hover {
  color: var(--warm-orange);
}

/* ==================== 顶部导航 ==================== */
.site-header {
  background: linear-gradient(180deg, var(--film-black) 0%, var(--dark-brown) 100%);
  border-bottom: 2px solid var(--gold);
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: 0 2px 20px rgba(0,0,0,0.5);
}

.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
}

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

.logo-text {
  font-size: 1.6rem;
  font-weight: bold;
  color: var(--cream);
  letter-spacing: 0.1em;
  text-shadow: 0 0 20px rgba(184,150,62,0.6);
  font-family: 'STKaiti', 'KaiTi', serif;
}

.logo-sub {
  font-size: 0.65rem;
  color: var(--gold);
  letter-spacing: 0.2em;
  display: block;
  text-transform: uppercase;
}

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

.main-nav a {
  color: var(--beige);
  font-size: 0.9rem;
  padding: 8px 16px;
  letter-spacing: 0.05em;
  transition: all 0.3s ease;
  position: relative;
  border-right: 1px solid rgba(255,255,255,0.1);
}

.main-nav a:last-child {
  border-right: none;
}

.main-nav a::after {
  content: '';
  position: absolute;
  bottom: 0; left: 50%; right: 50%;
  height: 2px;
  background: var(--gold);
  transition: all 0.3s ease;
}

.main-nav a:hover {
  color: var(--gold);
  background: rgba(184,150,62,0.1);
}

.main-nav a:hover::after {
  left: 10%; right: 10%;
}

/* 汉堡菜单 */
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 5px;
}

.menu-toggle span {
  display: block;
  width: 25px;
  height: 2px;
  background: var(--cream);
  transition: all 0.3s ease;
}

/* ==================== 搜索框 ==================== */
.search-bar-wrap {
  background: var(--dark-brown);
  border-bottom: 1px solid rgba(184,150,62,0.3);
  padding: 10px 20px;
}

.search-bar-inner {
  max-width: 700px;
  margin: 0 auto;
  position: relative;
}

.search-input {
  width: 100%;
  padding: 10px 50px 10px 20px;
  background: rgba(245,240,232,0.1);
  border: 1px solid rgba(184,150,62,0.4);
  border-radius: 30px;
  color: var(--cream);
  font-size: 0.9rem;
  font-family: inherit;
  outline: none;
  transition: all 0.3s ease;
  letter-spacing: 0.05em;
}

.search-input::placeholder {
  color: rgba(245,240,232,0.4);
}

.search-input:focus {
  border-color: var(--gold);
  background: rgba(245,240,232,0.15);
  box-shadow: 0 0 15px rgba(184,150,62,0.2);
}

.search-btn {
  position: absolute;
  right: 15px;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  color: var(--gold);
  cursor: pointer;
  font-size: 1.1rem;
  padding: 5px;
}

/* ==================== Banner ==================== */
.hero-banner {
  position: relative;
  height: 85vh;
  min-height: 500px;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  filter: sepia(30%) brightness(0.7);
  transform: scale(1.05);
  transition: transform 8s ease;
}

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

/* 胶片边框效果 */
.film-border {
  position: absolute;
  inset: 0;
  border: 12px solid var(--film-black);
  box-shadow: inset 0 0 80px rgba(0,0,0,0.6), inset 0 0 20px rgba(0,0,0,0.4);
  pointer-events: none;
  z-index: 2;
}

.film-border::before,
.film-border::after {
  content: '';
  position: absolute;
  top: 0; bottom: 0;
  width: 18px;
  background: repeating-linear-gradient(
    to bottom,
    var(--film-black) 0px,
    var(--film-black) 6px,
    transparent 6px,
    transparent 14px
  );
}

.film-border::before { left: -12px; }
.film-border::after { right: -12px; }

/* 暗角效果 */
.vignette {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at center, transparent 40%, rgba(0,0,0,0.7) 100%);
  pointer-events: none;
  z-index: 3;
}

.hero-content {
  position: relative;
  z-index: 10;
  text-align: center;
  color: var(--cream);
  padding: 20px;
}

.hero-tag {
  display: inline-block;
  font-size: 0.75rem;
  letter-spacing: 0.3em;
  color: var(--gold);
  text-transform: uppercase;
  border: 1px solid var(--gold);
  padding: 4px 16px;
  margin-bottom: 20px;
  font-family: 'Courier New', monospace;
}

.hero-title {
  font-size: clamp(2rem, 5vw, 4rem);
  font-weight: bold;
  line-height: 1.3;
  text-shadow: 2px 2px 20px rgba(0,0,0,0.8);
  margin-bottom: 16px;
  font-family: 'STKaiti', 'KaiTi', serif;
}

.hero-subtitle {
  font-size: clamp(1rem, 2vw, 1.3rem);
  color: var(--beige);
  margin-bottom: 30px;
  text-shadow: 1px 1px 10px rgba(0,0,0,0.8);
  letter-spacing: 0.1em;
}

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

.btn-primary {
  background: var(--gold);
  color: var(--film-black);
  padding: 12px 32px;
  border-radius: 2px;
  font-size: 0.95rem;
  font-weight: bold;
  letter-spacing: 0.1em;
  transition: all 0.3s ease;
  border: 2px solid var(--gold);
}

.btn-primary:hover {
  background: transparent;
  color: var(--gold);
}

.btn-secondary {
  background: transparent;
  color: var(--cream);
  padding: 12px 32px;
  border-radius: 2px;
  font-size: 0.95rem;
  letter-spacing: 0.1em;
  transition: all 0.3s ease;
  border: 2px solid var(--cream);
}

.btn-secondary:hover {
  background: var(--cream);
  color: var(--dark-brown);
}

/* ==================== 通用区块 ==================== */
.section {
  padding: 80px 20px;
}

.section-inner {
  max-width: 1200px;
  margin: 0 auto;
}

.section-header {
  text-align: center;
  margin-bottom: 50px;
}

.section-label {
  display: inline-block;
  font-size: 0.7rem;
  letter-spacing: 0.3em;
  color: var(--warm-orange);
  text-transform: uppercase;
  font-family: 'Courier New', monospace;
  margin-bottom: 10px;
}

.section-title {
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  color: var(--dark-brown);
  font-family: 'STKaiti', 'KaiTi', serif;
  margin-bottom: 12px;
  position: relative;
  display: inline-block;
}

.section-title::after {
  content: '';
  display: block;
  width: 60px;
  height: 2px;
  background: var(--gold);
  margin: 12px auto 0;
}

.section-desc {
  color: var(--soft-gray);
  font-size: 0.95rem;
  max-width: 600px;
  margin: 0 auto;
  line-height: 1.8;
}

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

.video-card {
  background: var(--light-cream);
  border: 1px solid var(--beige);
  border-radius: 4px;
  overflow: hidden;
  transition: all 0.4s ease;
  box-shadow: 2px 2px 12px rgba(92,61,46,0.1);
  cursor: pointer;
}

.video-card:hover {
  transform: translateY(-5px);
  box-shadow: 5px 10px 30px rgba(92,61,46,0.25);
}

.video-thumb {
  position: relative;
  aspect-ratio: 16/9;
  overflow: hidden;
  background: var(--dark-brown);
}

.video-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: all 0.5s ease;
  filter: sepia(20%);
}

.video-card:hover .video-thumb img {
  transform: scale(1.08);
  filter: sepia(40%) brightness(0.8);
}

/* 胶片颗粒悬停效果 */
.video-thumb::before {
  content: '';
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(
    0deg,
    transparent,
    transparent 2px,
    rgba(0,0,0,0.03) 2px,
    rgba(0,0,0,0.03) 4px
  );
  pointer-events: none;
  z-index: 2;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.video-card:hover .video-thumb::before {
  opacity: 1;
  animation: filmGrain 0.15s infinite;
}

@keyframes filmGrain {
  0% { transform: translate(0, 0); }
  25% { transform: translate(-1px, 1px); }
  50% { transform: translate(1px, -1px); }
  75% { transform: translate(-1px, -1px); }
  100% { transform: translate(1px, 1px); }
}

/* 暗角晕染悬停效果 */
.video-thumb::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at center, transparent 50%, rgba(0,0,0,0.5) 100%);
  pointer-events: none;
  z-index: 3;
  opacity: 0;
  transition: opacity 0.4s ease;
}

.video-card:hover .video-thumb::after {
  opacity: 1;
}

/* 播放按钮 */
.play-btn {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) scale(0.8);
  width: 56px;
  height: 56px;
  background: rgba(184,150,62,0.9);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10;
  opacity: 0;
  transition: all 0.3s ease;
  box-shadow: 0 0 20px rgba(184,150,62,0.5);
}

.play-btn::after {
  content: '';
  border-left: 18px solid var(--film-black);
  border-top: 11px solid transparent;
  border-bottom: 11px solid transparent;
  margin-left: 4px;
}

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

/* 老照片光晕效果 */
.film-halo {
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 30% 30%, rgba(255,220,150,0.15) 0%, transparent 60%);
  pointer-events: none;
  z-index: 4;
  opacity: 0;
  transition: opacity 0.4s ease;
}

.video-card:hover .film-halo {
  opacity: 1;
}

.video-card-body {
  padding: 16px;
}

.video-card-title {
  font-size: 1rem;
  font-weight: bold;
  color: var(--dark-brown);
  margin-bottom: 8px;
  font-family: 'STKaiti', 'KaiTi', serif;
  line-height: 1.4;
}

.video-card-desc {
  font-size: 0.82rem;
  color: var(--soft-gray);
  margin-bottom: 12px;
  line-height: 1.6;
}

.video-stats {
  display: flex;
  gap: 16px;
  font-size: 0.78rem;
  color: var(--soft-gray);
}

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

/* ==================== 品牌故事模块 ==================== */
.story-section {
  background: linear-gradient(135deg, var(--dark-brown) 0%, var(--film-black) 100%);
  color: var(--cream);
}

.story-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.story-image {
  position: relative;
  border: 3px solid var(--gold);
  box-shadow: 8px 8px 0 rgba(184,150,62,0.3);
}

.story-image img {
  width: 100%;
  display: block;
  filter: sepia(30%);
}

.story-image::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at center, transparent 40%, rgba(0,0,0,0.5) 100%);
}

.story-content .section-label {
  color: var(--gold);
}

.story-content .section-title {
  color: var(--cream);
  text-align: left;
}

.story-content .section-title::after {
  margin: 12px 0 0;
}

.story-text {
  color: var(--beige);
  line-height: 2;
  margin-top: 20px;
  font-size: 0.95rem;
}

/* ==================== 图片墙 ==================== */
.gallery-section {
  background: var(--beige);
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

.gallery-item {
  position: relative;
  aspect-ratio: 1;
  overflow: hidden;
  cursor: pointer;
}

.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: sepia(20%) brightness(0.9);
  transition: all 0.5s ease;
}

.gallery-item:hover img {
  transform: scale(1.1);
  filter: sepia(40%) brightness(0.75);
}

.gallery-item::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at center, transparent 40%, rgba(0,0,0,0.5) 100%);
  opacity: 0;
  transition: opacity 0.4s ease;
}

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

/* ==================== AI工具模块 ==================== */
.ai-section {
  background: var(--light-cream);
}

.ai-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 50px;
  align-items: center;
}

.ai-filters {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 24px;
}

.filter-tag {
  background: var(--cream);
  border: 1px solid var(--beige);
  padding: 12px 16px;
  text-align: center;
  font-size: 0.9rem;
  color: var(--warm-brown);
  cursor: pointer;
  transition: all 0.3s ease;
  border-radius: 2px;
}

.filter-tag:hover {
  background: var(--warm-brown);
  color: var(--cream);
  border-color: var(--warm-brown);
}

/* ==================== 达人模块 ==================== */
.creators-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.creator-card {
  text-align: center;
  padding: 30px 20px;
  background: var(--light-cream);
  border: 1px solid var(--beige);
  border-radius: 4px;
  transition: all 0.3s ease;
}

.creator-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 30px rgba(92,61,46,0.15);
}

.creator-avatar {
  width: 90px;
  height: 90px;
  border-radius: 50%;
  object-fit: cover;
  border: 3px solid var(--gold);
  margin: 0 auto 16px;
  display: block;
  filter: sepia(20%);
}

.creator-name {
  font-size: 1.1rem;
  font-weight: bold;
  color: var(--dark-brown);
  font-family: 'STKaiti', 'KaiTi', serif;
  margin-bottom: 6px;
}

.creator-role {
  font-size: 0.85rem;
  color: var(--soft-gray);
}

/* ==================== 评价模块 ==================== */
.reviews-section {
  background: var(--dark-brown);
  color: var(--cream);
}

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

.review-card {
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(184,150,62,0.3);
  padding: 24px;
  border-radius: 4px;
  transition: all 0.3s ease;
}

.review-card:hover {
  background: rgba(255,255,255,0.08);
  border-color: var(--gold);
}

.review-text {
  font-size: 0.9rem;
  line-height: 1.9;
  color: var(--beige);
  margin-bottom: 16px;
  font-style: italic;
}

.review-text::before {
  content: '"';
  font-size: 2rem;
  color: var(--gold);
  line-height: 0;
  vertical-align: -0.5em;
  margin-right: 4px;
}

.review-user {
  font-size: 0.85rem;
  color: var(--gold);
  font-weight: bold;
}

/* ==================== FAQ模块 ==================== */
.faq-section {
  background: var(--light-cream);
}

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

.faq-item {
  border-bottom: 1px solid var(--beige);
  padding: 20px 0;
}

.faq-question {
  font-size: 1rem;
  font-weight: bold;
  color: var(--dark-brown);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: 'STKaiti', 'KaiTi', serif;
  padding-right: 10px;
}

.faq-question::after {
  content: '+';
  font-size: 1.3rem;
  color: var(--gold);
  transition: transform 0.3s ease;
  flex-shrink: 0;
}

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

.faq-answer {
  font-size: 0.9rem;
  color: var(--soft-gray);
  line-height: 1.8;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.3s ease;
}

.faq-item.active .faq-answer {
  max-height: 200px;
  padding-top: 12px;
}

/* ==================== 合作伙伴 ==================== */
.partners-section {
  background: var(--cream);
}

.partners-logos {
  display: flex;
  justify-content: center;
  gap: 40px;
  flex-wrap: wrap;
  margin-bottom: 50px;
}

.partner-logo {
  width: 120px;
  height: 60px;
  background: var(--beige);
  border: 1px solid var(--beige);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  color: var(--soft-gray);
  letter-spacing: 0.1em;
  transition: all 0.3s ease;
  border-radius: 2px;
}

.partner-logo:hover {
  border-color: var(--gold);
  color: var(--warm-brown);
}

/* ==================== 联系模块 ==================== */
.contact-section {
  background: linear-gradient(135deg, var(--film-black) 0%, var(--dark-brown) 100%);
  color: var(--cream);
}

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

.contact-block h3 {
  font-size: 1.1rem;
  color: var(--gold);
  margin-bottom: 16px;
  font-family: 'STKaiti', 'KaiTi', serif;
  border-bottom: 1px solid rgba(184,150,62,0.3);
  padding-bottom: 8px;
}

.contact-block p {
  font-size: 0.9rem;
  color: var(--beige);
  line-height: 2;
}

.qrcode-placeholder {
  width: 100px;
  height: 100px;
  background: var(--beige);
  border: 2px solid var(--gold);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.7rem;
  color: var(--dark-brown);
  text-align: center;
  margin-top: 12px;
}

/* ==================== 页脚 ==================== */
.site-footer {
  background: var(--film-black);
  border-top: 2px solid var(--gold);
  padding: 30px 20px;
  text-align: center;
}

.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
}

.footer-brand {
  font-size: 1.3rem;
  color: var(--gold);
  font-family: 'STKaiti', 'KaiTi', serif;
  margin-bottom: 12px;
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: 20px;
  flex-wrap: wrap;
  margin-bottom: 16px;
}

.footer-links a {
  color: var(--beige);
  font-size: 0.85rem;
  transition: color 0.3s ease;
}

.footer-links a:hover {
  color: var(--gold);
}

.footer-copy {
  font-size: 0.8rem;
  color: var(--soft-gray);
  line-height: 1.8;
}

.footer-copy a {
  color: var(--soft-gray);
}

.footer-copy a:hover {
  color: var(--gold);
}

/* ==================== 内页Banner ==================== */
.inner-banner {
  height: 320px;
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.inner-banner-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  filter: sepia(40%) brightness(0.6);
}

.inner-banner-content {
  position: relative;
  z-index: 10;
  text-align: center;
  color: var(--cream);
}

.inner-banner-title {
  font-size: clamp(1.8rem, 4vw, 3rem);
  font-family: 'STKaiti', 'KaiTi', serif;
  text-shadow: 2px 2px 20px rgba(0,0,0,0.8);
  margin-bottom: 10px;
}

/* 面包屑 */
.breadcrumb {
  background: var(--beige);
  padding: 12px 20px;
  font-size: 0.85rem;
  color: var(--soft-gray);
  border-bottom: 1px solid var(--cream);
}

.breadcrumb-inner {
  max-width: 1200px;
  margin: 0 auto;
}

.breadcrumb a {
  color: var(--warm-brown);
}

.breadcrumb span {
  margin: 0 8px;
  color: var(--soft-gray);
}

/* ==================== 内页文章列表 ==================== */
.article-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 28px;
}

.article-card {
  background: var(--light-cream);
  border: 1px solid var(--beige);
  border-radius: 4px;
  overflow: hidden;
  transition: all 0.3s ease;
}

.article-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 25px rgba(92,61,46,0.15);
}

.article-thumb {
  aspect-ratio: 16/9;
  overflow: hidden;
}

.article-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: sepia(15%);
  transition: all 0.5s ease;
}

.article-card:hover .article-thumb img {
  transform: scale(1.06);
  filter: sepia(30%);
}

.article-body {
  padding: 20px;
}

.article-tag {
  display: inline-block;
  font-size: 0.72rem;
  color: var(--warm-orange);
  border: 1px solid var(--warm-orange);
  padding: 2px 10px;
  margin-bottom: 10px;
  letter-spacing: 0.1em;
}

.article-title {
  font-size: 1.05rem;
  font-weight: bold;
  color: var(--dark-brown);
  font-family: 'STKaiti', 'KaiTi', serif;
  margin-bottom: 10px;
  line-height: 1.5;
}

.article-excerpt {
  font-size: 0.85rem;
  color: var(--soft-gray);
  line-height: 1.7;
}

.article-meta {
  margin-top: 12px;
  font-size: 0.78rem;
  color: var(--soft-gray);
  display: flex;
  gap: 12px;
}

/* ==================== 响应式 ==================== */
@media (max-width: 1024px) {
  .story-inner { grid-template-columns: 1fr; gap: 30px; }
  .ai-grid { grid-template-columns: 1fr; gap: 30px; }
  .contact-grid { grid-template-columns: 1fr 1fr; }
  .gallery-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .main-nav { display: none; flex-direction: column; width: 100%; }
  .main-nav.open { display: flex; }
  .main-nav a { border-right: none; border-bottom: 1px solid rgba(255,255,255,0.1); padding: 12px 20px; }
  .menu-toggle { display: flex; }
  .header-inner { flex-wrap: wrap; height: auto; padding: 12px 20px; }
  .site-header { position: relative; }
  .cards-grid { grid-template-columns: 1fr 1fr; }
  .creators-grid { grid-template-columns: 1fr; }
  .reviews-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .gallery-grid { grid-template-columns: repeat(2, 1fr); }
  .section { padding: 50px 16px; }
  .hero-banner { height: 70vh; }
}

@media (max-width: 480px) {
  .cards-grid { grid-template-columns: 1fr; }
  .gallery-grid { grid-template-columns: repeat(2, 1fr); }
  .hero-buttons { flex-direction: column; align-items: center; }
}

/* ==================== 懒加载占位 ==================== */
img[data-src] {
  opacity: 0;
  transition: opacity 0.5s ease;
}
img.loaded {
  opacity: 1;
}

/* ==================== 滚动动画 ==================== */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}