/* =============================================
   17c官网 - 复古摄影·怀旧胶片·文艺摄影美学风格
   www.nm76vd.cn
   ============================================= */

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

@import url('https://fonts.googleapis.com/css2?family=Noto+Serif+SC:wght@300;400;500;600;700&display=swap');

:root {
  --cream:       #f5f0e8;
  --beige:       #e8dcc8;
  --warm-brown:  #8b6b4a;
  --dark-brown:  #3d2b1f;
  --deep-brown:  #1a0f08;
  --warm-orange: #c8824a;
  --dark-red:    #8b2a2a;
  --light-gray:  #d4cfc8;
  --sepia:       #704214;
  --film-black:  #0d0a07;
  --gold:        #c9a84c;
  --font-main:   'Noto Serif SC', 'STSong', 'SimSun', serif;
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-main);
  background-color: var(--cream);
  color: var(--dark-brown);
  line-height: 1.8;
  font-size: 16px;
  overflow-x: hidden;
  position: relative;
}

/* 全局胶片颗粒纹理叠加 */
body::before {
  content: '';
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='300' height='300'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3C/filter%3E%3Crect width='300' height='300' filter='url(%23noise)' opacity='0.04'/%3E%3C/svg%3E");
  pointer-events: none;
  z-index: 9999;
  opacity: 0.5;
}

/* --- 滚动条 --- */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--beige); }
::-webkit-scrollbar-thumb { background: var(--warm-brown); border-radius: 3px; }

/* --- 通用容器 --- */
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.section { padding: 80px 0; }
.section-alt { background-color: var(--beige); }

/* --- 标题样式 --- */
.section-title {
  font-size: 2rem;
  font-weight: 600;
  color: var(--dark-brown);
  text-align: center;
  margin-bottom: 12px;
  letter-spacing: 0.08em;
  position: relative;
}
.section-title::after {
  content: '';
  display: block;
  width: 60px;
  height: 2px;
  background: var(--warm-orange);
  margin: 12px auto 0;
}
.section-subtitle {
  text-align: center;
  color: var(--warm-brown);
  font-size: 0.95rem;
  margin-bottom: 48px;
  letter-spacing: 0.05em;
}

/* --- 顶部导航 --- */
.site-header {
  background: rgba(29, 18, 10, 0.97);
  border-bottom: 1px solid rgba(201, 168, 76, 0.3);
  position: sticky;
  top: 0;
  z-index: 1000;
  backdrop-filter: blur(8px);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  padding: 0 24px;
  max-width: 1200px;
  margin: 0 auto;
}
.logo {
  display: flex;
  align-items: center;
  text-decoration: none;
  gap: 10px;
}
.logo-text {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--gold);
  letter-spacing: 0.1em;
  text-shadow: 0 0 20px rgba(201, 168, 76, 0.5);
  font-style: italic;
}
.logo-sub {
  font-size: 0.7rem;
  color: var(--light-gray);
  letter-spacing: 0.15em;
  display: block;
  line-height: 1.2;
}
.main-nav { display: flex; align-items: center; gap: 4px; }
.main-nav a {
  color: var(--beige);
  text-decoration: none;
  font-size: 0.9rem;
  padding: 6px 14px;
  border-radius: 2px;
  transition: all 0.3s ease;
  letter-spacing: 0.05em;
  white-space: nowrap;
}
.main-nav a:hover, .main-nav a.active {
  color: var(--gold);
  background: rgba(201, 168, 76, 0.1);
}
.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}
.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--beige);
  margin: 4px 0;
  transition: all 0.3s;
}

/* --- 搜索框 --- */
.search-bar-wrap {
  background: var(--deep-brown);
  padding: 12px 0;
  border-bottom: 1px solid rgba(201, 168, 76, 0.15);
}
.search-bar-inner {
  max-width: 700px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  gap: 0;
}
.search-input {
  flex: 1;
  background: rgba(245, 240, 232, 0.08);
  border: 1px solid rgba(201, 168, 76, 0.3);
  border-right: none;
  color: var(--beige);
  padding: 9px 18px;
  font-family: var(--font-main);
  font-size: 0.9rem;
  outline: none;
  border-radius: 2px 0 0 2px;
  letter-spacing: 0.05em;
}
.search-input::placeholder { color: rgba(212, 207, 200, 0.5); }
.search-btn {
  background: var(--warm-orange);
  border: 1px solid var(--warm-orange);
  color: #fff;
  padding: 9px 24px;
  cursor: pointer;
  font-family: var(--font-main);
  font-size: 0.9rem;
  border-radius: 0 2px 2px 0;
  transition: background 0.3s;
  letter-spacing: 0.05em;
}
.search-btn:hover { background: var(--dark-red); border-color: var(--dark-red); }
.search-tip {
  display: none;
  text-align: center;
  color: var(--light-gray);
  font-size: 0.8rem;
  margin-top: 6px;
  opacity: 0.7;
}

/* --- Banner --- */
.hero-banner {
  position: relative;
  height: 88vh;
  min-height: 560px;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background-image: url('../images/banner.jpg');
  background-size: cover;
  background-position: center;
  filter: sepia(0.3) brightness(0.65);
  transform: scale(1.03);
  transition: transform 8s ease;
}
.hero-banner:hover .hero-bg { transform: scale(1.0); }

/* 胶片边框效果 */
.hero-banner::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    linear-gradient(to bottom, rgba(13,10,7,0.7) 0%, transparent 20%, transparent 80%, rgba(13,10,7,0.7) 100%),
    linear-gradient(to right, rgba(13,10,7,0.5) 0%, transparent 10%, transparent 90%, rgba(13,10,7,0.5) 100%);
  z-index: 2;
}
/* 暗角效果 */
.hero-banner::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at center, transparent 50%, rgba(13,10,7,0.65) 100%);
  z-index: 3;
}
/* 胶片边框条纹 */
.film-border-top, .film-border-bottom {
  position: absolute;
  left: 0; right: 0;
  height: 28px;
  background: repeating-linear-gradient(
    90deg,
    var(--film-black) 0px, var(--film-black) 18px,
    transparent 18px, transparent 26px
  );
  z-index: 5;
}
.film-border-top { top: 0; }
.film-border-bottom { bottom: 0; }

.hero-content {
  position: relative;
  z-index: 10;
  text-align: center;
  color: var(--cream);
  padding: 0 24px;
  max-width: 800px;
}
.hero-tag {
  display: inline-block;
  border: 1px solid var(--gold);
  color: var(--gold);
  font-size: 0.75rem;
  letter-spacing: 0.25em;
  padding: 4px 16px;
  margin-bottom: 20px;
  text-transform: uppercase;
}
.hero-title {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 16px;
  text-shadow: 0 2px 20px rgba(0,0,0,0.8);
  letter-spacing: 0.06em;
}
.hero-title span { color: var(--gold); }
.hero-subtitle {
  font-size: 1.05rem;
  color: var(--beige);
  margin-bottom: 36px;
  letter-spacing: 0.08em;
  opacity: 0.9;
  text-shadow: 0 1px 8px rgba(0,0,0,0.6);
}
.hero-btns { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
.btn-primary {
  background: var(--warm-orange);
  color: #fff;
  padding: 12px 32px;
  text-decoration: none;
  font-size: 0.95rem;
  letter-spacing: 0.1em;
  border: 2px solid var(--warm-orange);
  transition: all 0.3s;
  display: inline-block;
}
.btn-primary:hover { background: transparent; color: var(--warm-orange); }
.btn-secondary {
  background: transparent;
  color: var(--cream);
  padding: 12px 32px;
  text-decoration: none;
  font-size: 0.95rem;
  letter-spacing: 0.1em;
  border: 2px solid rgba(245,240,232,0.6);
  transition: all 0.3s;
  display: inline-block;
}
.btn-secondary:hover { border-color: var(--gold); color: var(--gold); }

/* --- 视频卡片 --- */
.video-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 28px;
}
.video-card {
  background: #fff;
  border: 1px solid var(--beige);
  overflow: hidden;
  cursor: pointer;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  position: relative;
}
.video-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(61, 43, 31, 0.2);
}
.video-thumb {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16/9;
  background: var(--dark-brown);
}
.video-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.5s ease, filter 0.5s ease;
  filter: sepia(0.2);
}
.video-card:hover .video-thumb img {
  transform: scale(1.05);
  filter: sepia(0.5) brightness(0.7);
}

/* 胶片颗粒悬停效果 */
.video-thumb::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at center, transparent 40%, rgba(13,10,7,0.5) 100%);
  opacity: 0;
  transition: opacity 0.4s ease;
  z-index: 2;
}
.video-card:hover .video-thumb::before { opacity: 1; }

/* 胶片颗粒动画 */
.video-thumb::after {
  content: '';
  position: absolute;
  inset: -50%;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='200' height='200'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3C/filter%3E%3Crect width='200' height='200' filter='url(%23n)' opacity='0.12'/%3E%3C/svg%3E");
  opacity: 0;
  transition: opacity 0.4s ease;
  z-index: 3;
  pointer-events: none;
  animation: filmGrain 0.08s steps(1) infinite;
}
.video-card:hover .video-thumb::after { opacity: 1; }

@keyframes filmGrain {
  0%   { transform: translate(0, 0); }
  10%  { transform: translate(-3%, -3%); }
  20%  { transform: translate(3%, 3%); }
  30%  { transform: translate(-2%, 2%); }
  40%  { transform: translate(2%, -2%); }
  50%  { transform: translate(-1%, 1%); }
  60%  { transform: translate(1%, -1%); }
  70%  { transform: translate(-3%, 2%); }
  80%  { transform: translate(3%, -3%); }
  90%  { transform: translate(-2%, -1%); }
  100% { transform: translate(0, 0); }
}

/* 播放按钮 */
.play-btn {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) scale(0.8);
  width: 60px;
  height: 60px;
  background: rgba(201, 168, 76, 0.9);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: all 0.4s ease;
  z-index: 10;
  border: 2px solid rgba(255,255,255,0.8);
}
.play-btn::after {
  content: '';
  width: 0;
  height: 0;
  border-style: solid;
  border-width: 10px 0 10px 18px;
  border-color: transparent transparent transparent #fff;
  margin-left: 4px;
}
.video-card:hover .play-btn {
  opacity: 1;
  transform: translate(-50%, -50%) scale(1);
}

/* 视频时长标签 */
.video-duration {
  position: absolute;
  bottom: 8px;
  right: 8px;
  background: rgba(13,10,7,0.8);
  color: var(--cream);
  font-size: 0.75rem;
  padding: 2px 8px;
  z-index: 5;
  letter-spacing: 0.05em;
}

.video-info { padding: 16px 18px 18px; }
.video-tags { display: flex; gap: 6px; flex-wrap: wrap; margin-bottom: 8px; }
.video-tag {
  font-size: 0.7rem;
  color: var(--warm-orange);
  border: 1px solid var(--warm-orange);
  padding: 1px 8px;
  letter-spacing: 0.05em;
}
.video-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--dark-brown);
  margin-bottom: 8px;
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.video-desc {
  font-size: 0.85rem;
  color: var(--warm-brown);
  line-height: 1.6;
  margin-bottom: 12px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.video-stats {
  display: flex;
  gap: 16px;
  font-size: 0.8rem;
  color: var(--light-gray);
  border-top: 1px solid var(--beige);
  padding-top: 10px;
}
.video-stats span { display: flex; align-items: center; gap: 4px; }

/* --- 故事模块 --- */
.story-section {
  background: var(--dark-brown);
  color: var(--cream);
  padding: 80px 0;
  position: relative;
  overflow: hidden;
}
.story-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 30% 50%, rgba(200, 130, 74, 0.1) 0%, transparent 60%);
}
.story-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  position: relative;
  z-index: 1;
}
.story-img-wrap {
  position: relative;
}
.story-img-wrap img {
  width: 100%;
  filter: sepia(0.4) brightness(0.85);
  border: 3px solid rgba(201, 168, 76, 0.3);
  display: block;
}
.story-img-wrap::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at center, transparent 50%, rgba(13,10,7,0.4) 100%);
  pointer-events: none;
}
.story-content .section-title { text-align: left; color: var(--cream); }
.story-content .section-title::after { margin-left: 0; }
.story-content p {
  color: var(--beige);
  line-height: 1.9;
  margin-bottom: 16px;
  font-size: 0.95rem;
}
.story-quote {
  border-left: 3px solid var(--gold);
  padding-left: 20px;
  margin: 24px 0;
  font-style: italic;
  color: var(--gold);
  font-size: 1.05rem;
  letter-spacing: 0.05em;
}

/* --- 画廊模块 --- */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}
.gallery-item {
  position: relative;
  overflow: hidden;
  aspect-ratio: 1;
  cursor: pointer;
}
.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  filter: sepia(0.3) brightness(0.9);
  transition: all 0.5s ease;
}
.gallery-item::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at center, transparent 40%, rgba(13,10,7,0.5) 100%);
  opacity: 0.6;
  transition: opacity 0.4s;
}
.gallery-item:hover img { filter: sepia(0.5) brightness(0.75); transform: scale(1.05); }
.gallery-item:hover::after { opacity: 0.8; }
.gallery-caption {
  position: absolute;
  bottom: 0;
  left: 0; right: 0;
  background: linear-gradient(transparent, rgba(13,10,7,0.8));
  color: var(--cream);
  padding: 20px 12px 10px;
  font-size: 0.8rem;
  letter-spacing: 0.05em;
  transform: translateY(100%);
  transition: transform 0.4s ease;
  z-index: 5;
}
.gallery-item:hover .gallery-caption { transform: translateY(0); }

/* --- AI滤镜模块 --- */
.ai-section { background: var(--deep-brown); padding: 80px 0; }
.ai-section .section-title { color: var(--cream); }
.ai-section .section-subtitle { color: var(--light-gray); }
.ai-filters-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 20px;
}
.ai-filter-card {
  background: rgba(245, 240, 232, 0.05);
  border: 1px solid rgba(201, 168, 76, 0.2);
  padding: 24px 20px;
  text-align: center;
  transition: all 0.3s;
  cursor: pointer;
}
.ai-filter-card:hover {
  background: rgba(201, 168, 76, 0.1);
  border-color: var(--gold);
  transform: translateY(-3px);
}
.ai-filter-icon { font-size: 2rem; margin-bottom: 12px; }
.ai-filter-name { color: var(--cream); font-size: 0.95rem; margin-bottom: 6px; letter-spacing: 0.05em; }
.ai-filter-desc { color: var(--light-gray); font-size: 0.8rem; line-height: 1.5; }

/* --- 达人模块 --- */
.creators-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 28px;
}
.creator-card {
  text-align: center;
  padding: 32px 20px;
  background: #fff;
  border: 1px solid var(--beige);
  transition: all 0.3s;
}
.creator-card:hover { box-shadow: 0 8px 32px rgba(61, 43, 31, 0.15); transform: translateY(-3px); }
.creator-avatar {
  width: 90px;
  height: 90px;
  border-radius: 50%;
  object-fit: cover;
  margin: 0 auto 16px;
  display: block;
  filter: sepia(0.2);
  border: 3px solid var(--beige);
}
.creator-name { font-size: 1.1rem; font-weight: 600; color: var(--dark-brown); margin-bottom: 4px; }
.creator-role { font-size: 0.85rem; color: var(--warm-brown); letter-spacing: 0.05em; margin-bottom: 12px; }
.creator-stats { display: flex; justify-content: center; gap: 20px; font-size: 0.8rem; color: var(--light-gray); }
.creator-stat strong { display: block; color: var(--dark-brown); font-size: 1rem; }

/* --- 评价模块 --- */
.reviews-section { background: var(--beige); padding: 80px 0; }
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 24px;
}
.review-card {
  background: var(--cream);
  padding: 24px;
  border-left: 3px solid var(--warm-orange);
  position: relative;
}
.review-card::before {
  content: '\201C';
  position: absolute;
  top: 12px;
  right: 20px;
  font-size: 4rem;
  color: var(--beige);
  font-family: Georgia, serif;
  line-height: 1;
}
.review-text { font-size: 0.9rem; line-height: 1.8; color: var(--dark-brown); margin-bottom: 16px; font-style: italic; }
.review-user { display: flex; align-items: center; gap: 10px; }
.review-avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--warm-brown);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--cream);
  font-size: 0.8rem;
  font-weight: 600;
  flex-shrink: 0;
}
.review-name { font-size: 0.85rem; font-weight: 600; color: var(--dark-brown); }
.review-stars { color: var(--gold); font-size: 0.75rem; letter-spacing: 2px; }

/* --- FAQ模块 --- */
.faq-list { max-width: 800px; margin: 0 auto; }
.faq-item {
  border-bottom: 1px solid var(--beige);
  overflow: hidden;
}
.faq-question {
  width: 100%;
  background: none;
  border: none;
  text-align: left;
  padding: 20px 0;
  font-family: var(--font-main);
  font-size: 1rem;
  color: var(--dark-brown);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  letter-spacing: 0.03em;
  font-weight: 500;
}
.faq-question:hover { color: var(--warm-orange); }
.faq-icon {
  width: 20px;
  height: 20px;
  border: 1px solid var(--warm-brown);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  color: var(--warm-brown);
  flex-shrink: 0;
  transition: transform 0.3s;
}
.faq-item.open .faq-icon { transform: rotate(45deg); color: var(--warm-orange); border-color: var(--warm-orange); }
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.3s ease;
}
.faq-answer-inner {
  padding: 0 0 20px;
  font-size: 0.9rem;
  color: var(--warm-brown);
  line-height: 1.8;
}
.faq-item.open .faq-answer { max-height: 200px; }

/* --- 合作模块 --- */
.partners-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  justify-content: center;
  margin-bottom: 48px;
}
.partner-logo {
  width: 140px;
  height: 60px;
  background: var(--cream);
  border: 1px solid var(--beige);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  color: var(--warm-brown);
  letter-spacing: 0.05em;
  transition: all 0.3s;
}
.partner-logo:hover { border-color: var(--warm-orange); color: var(--warm-orange); }

/* --- 联系模块 --- */
.contact-section { background: var(--dark-brown); padding: 80px 0; }
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 48px;
}
.contact-block h3 {
  color: var(--gold);
  font-size: 1rem;
  letter-spacing: 0.1em;
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid rgba(201, 168, 76, 0.3);
}
.contact-block p, .contact-block a {
  color: var(--beige);
  font-size: 0.9rem;
  line-height: 2;
  text-decoration: none;
  display: block;
}
.contact-block a:hover { color: var(--gold); }
.contact-qr img {
  width: 120px;
  height: 120px;
  object-fit: cover;
  border: 2px solid rgba(201, 168, 76, 0.3);
  filter: sepia(0.2);
  margin-top: 8px;
}

/* --- 面包屑 --- */
.breadcrumb {
  background: var(--beige);
  padding: 10px 0;
  border-bottom: 1px solid var(--light-gray);
}
.breadcrumb-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  font-size: 0.82rem;
  color: var(--warm-brown);
}
.breadcrumb-inner a { color: var(--warm-brown); text-decoration: none; }
.breadcrumb-inner a:hover { color: var(--warm-orange); }
.breadcrumb-inner span { margin: 0 6px; color: var(--light-gray); }

/* --- 页脚 --- */
.site-footer {
  background: var(--film-black);
  color: var(--light-gray);
  padding: 40px 0 20px;
  border-top: 1px solid rgba(201, 168, 76, 0.2);
}
.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}
.footer-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 32px;
  margin-bottom: 32px;
  flex-wrap: wrap;
}
.footer-logo { color: var(--gold); font-size: 1.5rem; font-weight: 700; font-style: italic; letter-spacing: 0.1em; }
.footer-desc { font-size: 0.82rem; color: rgba(212, 207, 200, 0.6); margin-top: 6px; line-height: 1.6; max-width: 280px; }
.footer-links h4 { color: var(--cream); font-size: 0.85rem; margin-bottom: 12px; letter-spacing: 0.1em; }
.footer-links a {
  display: block;
  color: rgba(212, 207, 200, 0.6);
  text-decoration: none;
  font-size: 0.82rem;
  line-height: 2;
  transition: color 0.3s;
}
.footer-links a:hover { color: var(--gold); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.05);
  padding-top: 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 0.78rem;
  color: rgba(212, 207, 200, 0.4);
}
.footer-bottom a { color: rgba(212, 207, 200, 0.4); text-decoration: none; }
.footer-bottom a:hover { color: var(--gold); }
.footer-update { color: rgba(201, 168, 76, 0.6); font-size: 0.78rem; }

/* --- 内页页头 --- */
.page-hero {
  position: relative;
  height: 320px;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}
.page-hero-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  filter: sepia(0.4) brightness(0.55);
}
.page-hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at center, transparent 30%, rgba(13,10,7,0.6) 100%);
}
.page-hero-content {
  position: relative;
  z-index: 5;
  text-align: center;
  color: var(--cream);
}
.page-hero-content h1 {
  font-size: 2.4rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-shadow: 0 2px 20px rgba(0,0,0,0.8);
  margin-bottom: 8px;
}
.page-hero-content p {
  font-size: 1rem;
  color: var(--beige);
  letter-spacing: 0.08em;
  opacity: 0.9;
}

/* --- 文章卡片 --- */
.article-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 28px;
}
.article-card {
  background: #fff;
  border: 1px solid var(--beige);
  overflow: hidden;
  transition: all 0.3s;
}
.article-card:hover { transform: translateY(-4px); box-shadow: 0 10px 32px rgba(61,43,31,0.15); }
.article-thumb {
  aspect-ratio: 16/9;
  overflow: hidden;
}
.article-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  filter: sepia(0.2);
  transition: all 0.4s;
}
.article-card:hover .article-thumb img { filter: sepia(0.4); transform: scale(1.04); }
.article-body { padding: 20px; }
.article-meta { font-size: 0.78rem; color: var(--light-gray); margin-bottom: 8px; letter-spacing: 0.05em; }
.article-title { font-size: 1rem; font-weight: 600; color: var(--dark-brown); margin-bottom: 8px; line-height: 1.5; }
.article-excerpt { font-size: 0.85rem; color: var(--warm-brown); line-height: 1.7; }
.article-read-more {
  display: inline-block;
  margin-top: 12px;
  font-size: 0.82rem;
  color: var(--warm-orange);
  text-decoration: none;
  letter-spacing: 0.05em;
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s;
}
.article-read-more:hover { border-bottom-color: var(--warm-orange); }

/* --- 加入指南 --- */
.join-steps {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 24px;
  counter-reset: step;
}
.join-step {
  text-align: center;
  padding: 28px 20px;
  background: var(--cream);
  border: 1px solid var(--beige);
  position: relative;
  counter-increment: step;
}
.join-step::before {
  content: counter(step);
  position: absolute;
  top: -16px;
  left: 50%;
  transform: translateX(-50%);
  width: 32px;
  height: 32px;
  background: var(--warm-orange);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  font-weight: 700;
}
.join-step h4 { font-size: 0.95rem; color: var(--dark-brown); margin-bottom: 8px; }
.join-step p { font-size: 0.82rem; color: var(--warm-brown); line-height: 1.6; }

/* --- 响应式 --- */
@media (max-width: 1024px) {
  .gallery-grid { grid-template-columns: repeat(3, 1fr); }
  .contact-grid { grid-template-columns: 1fr 1fr; }
  .story-inner { gap: 40px; }
}

@media (max-width: 768px) {
  .section { padding: 56px 0; }
  .section-title { font-size: 1.6rem; }
  .main-nav { display: none; flex-direction: column; position: absolute; top: 64px; left: 0; right: 0; background: rgba(29, 18, 10, 0.98); padding: 12px 0; }
  .main-nav.open { display: flex; }
  .main-nav a { padding: 10px 24px; border-radius: 0; }
  .nav-toggle { display: block; }
  .hero-banner { height: 70vh; }
  .hero-title { font-size: 1.8rem; }
  .story-inner { grid-template-columns: 1fr; }
  .gallery-grid { grid-template-columns: repeat(2, 1fr); }
  .contact-grid { grid-template-columns: 1fr; gap: 32px; }
  .footer-top { flex-direction: column; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .video-grid { grid-template-columns: 1fr; }
  .creators-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 480px) {
  .hero-btns { flex-direction: column; align-items: center; }
  .gallery-grid { grid-template-columns: repeat(2, 1fr); gap: 8px; }
  .creators-grid { grid-template-columns: 1fr; }
  .reviews-grid { grid-template-columns: 1fr; }
  .ai-filters-grid { grid-template-columns: repeat(2, 1fr); }
}

/* --- 懒加载占位 --- */
img[loading="lazy"] { background: var(--beige); }

/* --- 工具类 --- */
.text-center { text-align: center; }
.mt-8 { margin-top: 8px; }
.mt-16 { margin-top: 16px; }
.mt-24 { margin-top: 24px; }
.mt-48 { margin-top: 48px; }
.mb-48 { margin-bottom: 48px; }
.hidden { display: none; }

/* --- 内页侧边栏 --- */
.inner-layout {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 40px;
  padding: 60px 0;
}
.sidebar { }
.sidebar-widget {
  background: var(--cream);
  border: 1px solid var(--beige);
  padding: 20px;
  margin-bottom: 24px;
}
.sidebar-widget h3 {
  font-size: 0.95rem;
  color: var(--dark-brown);
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--warm-orange);
  letter-spacing: 0.05em;
}
.sidebar-list { list-style: none; }
.sidebar-list li {
  padding: 8px 0;
  border-bottom: 1px solid var(--beige);
  font-size: 0.85rem;
}
.sidebar-list li:last-child { border-bottom: none; }
.sidebar-list a { color: var(--warm-brown); text-decoration: none; transition: color 0.3s; }
.sidebar-list a:hover { color: var(--warm-orange); }

@media (max-width: 900px) {
  .inner-layout { grid-template-columns: 1fr; }
  .sidebar { order: -1; }
}