/* ============================================================
   17c 全站样式 · 侘寂禅意极简美学
   www.qhvcel.cn
   ============================================================ */

/* ===== CSS变量 ===== */
:root {
  --color-white:      #FAFAF8;
  --color-cream:      #F4F1EC;
  --color-gray-light: #E8E4DC;
  --color-gray:       #C8C2B8;
  --color-gray-dark:  #8A8278;
  --color-brown:      #7A6A58;
  --color-brown-dark: #4A3C30;
  --color-mist:       #7A8C8A;
  --color-ink:        #2A2420;
  --color-clay:       #A08060;

  --font-serif:  'Noto Serif SC', 'Songti SC', STSong, serif;
  --font-sans:   'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;

  --max-width:   1200px;
  --radius:      2px;
  --transition:  0.35s ease;
  --shadow:      0 2px 20px rgba(42,36,32,0.06);
  --shadow-hover:0 8px 40px rgba(42,36,32,0.12);
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  background: var(--color-white);
  color: var(--color-ink);
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition);
}

a:hover { color: var(--color-brown); }

ul, ol { list-style: none; }

blockquote {
  border-left: 3px solid var(--color-brown);
  padding: 0.8rem 1.2rem;
  margin: 1.5rem 0;
  font-family: var(--font-serif);
  color: var(--color-brown);
  font-style: italic;
  background: var(--color-cream);
}

/* ===== 按钮 ===== */
.btn {
  display: inline-block;
  padding: 0.75rem 2rem;
  font-family: var(--font-sans);
  font-size: 0.85rem;
  letter-spacing: 0.12em;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all var(--transition);
  text-align: center;
}

.btn-primary {
  background: var(--color-brown);
  color: var(--color-white);
  border-color: var(--color-brown);
}
.btn-primary:hover {
  background: var(--color-brown-dark);
  border-color: var(--color-brown-dark);
  color: var(--color-white);
}

.btn-outline {
  background: transparent;
  color: var(--color-brown);
  border-color: var(--color-brown);
}
.btn-outline:hover {
  background: var(--color-brown);
  color: var(--color-white);
}

/* ===== 面包屑 ===== */
.breadcrumb {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0.8rem 2rem;
  font-size: 0.78rem;
  color: var(--color-gray-dark);
  display: flex;
  align-items: center;
  gap: 0.4rem;
  flex-wrap: wrap;
}
.breadcrumb a { color: var(--color-gray-dark); }
.breadcrumb a:hover { color: var(--color-brown); }
.breadcrumb span { color: var(--color-gray); }

/* ===== 淡入动画 ===== */
.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ===== 顶部导航 ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(250,250,248,0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-gray-light);
}

.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 2rem;
  height: 64px;
  display: flex;
  align-items: center;
  gap: 2rem;
}

.site-logo {
  font-family: var(--font-serif);
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--color-brown-dark);
  letter-spacing: 0.05em;
  flex-shrink: 0;
}
.site-logo span {
  color: var(--color-brown);
  font-size: 1rem;
  margin-left: 2px;
}
.site-logo:hover { color: var(--color-brown); }

.site-nav {
  display: flex;
  align-items: center;
  gap: 0.2rem;
  margin-left: auto;
  flex-wrap: wrap;
}

.site-nav a {
  padding: 0.4rem 0.8rem;
  font-size: 0.82rem;
  color: var(--color-gray-dark);
  letter-spacing: 0.04em;
  border-radius: var(--radius);
  transition: all var(--transition);
  white-space: nowrap;
}
.site-nav a:hover,
.site-nav a.active {
  color: var(--color-brown);
  background: var(--color-cream);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  margin-left: auto;
}
.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-brown);
  transition: all var(--transition);
}
.nav-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(5px,5px); }
.nav-toggle.active span:nth-child(2) { opacity: 0; }
.nav-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(5px,-5px); }

/* ===== 搜索栏 ===== */
.search-bar {
  background: var(--color-cream);
  border-bottom: 1px solid var(--color-gray-light);
  padding: 0.6rem 0;
}

.search-bar-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 2rem;
}

.search-input-wrap {
  position: relative;
  max-width: 600px;
}

.search-input-wrap form {
  display: flex;
  align-items: center;
  border: 1px solid var(--color-gray);
  background: var(--color-white);
  border-radius: var(--radius);
  overflow: hidden;
}

.search-input-wrap input {
  flex: 1;
  border: none;
  outline: none;
  padding: 0.5rem 1rem;
  font-size: 0.85rem;
  font-family: var(--font-sans);
  background: transparent;
  color: var(--color-ink);
}
.search-input-wrap input::placeholder { color: var(--color-gray); }

.search-btn {
  background: none;
  border: none;
  padding: 0.5rem 0.8rem;
  cursor: pointer;
  color: var(--color-gray-dark);
  font-size: 1rem;
  transition: color var(--transition);
}
.search-btn:hover { color: var(--color-brown); }

.search-suggest {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background: var(--color-white);
  border: 1px solid var(--color-gray-light);
  border-top: none;
  z-index: 100;
  box-shadow: var(--shadow);
}
.search-suggest.active { display: block; }
.search-suggest li {
  padding: 0.5rem 1rem;
  font-size: 0.82rem;
  color: var(--color-gray-dark);
  cursor: pointer;
  transition: background var(--transition);
}
.search-suggest li:hover { background: var(--color-cream); color: var(--color-brown); }

/* ===== Hero Banner ===== */
.hero-banner {
  position: relative;
  height: 80vh;
  min-height: 500px;
  max-height: 800px;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  transform: scale(1.05);
  transition: transform 8s ease;
}
.hero-banner:hover .hero-bg { transform: scale(1); }

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to bottom,
    rgba(42,36,32,0.2) 0%,
    rgba(42,36,32,0.5) 60%,
    rgba(42,36,32,0.7) 100%
  );
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  color: var(--color-white);
  padding: 0 2rem;
  max-width: 800px;
}

.hero-tag {
  display: inline-block;
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  border: 1px solid rgba(250,250,248,0.5);
  padding: 0.3rem 1rem;
  margin-bottom: 1.5rem;
  color: rgba(250,250,248,0.85);
}

.hero-title {
  font-family: var(--font-serif);
  font-size: clamp(2.2rem, 6vw, 4.5rem);
  font-weight: 600;
  line-height: 1.25;
  letter-spacing: 0.05em;
  margin-bottom: 1.2rem;
  text-shadow: 0 2px 20px rgba(0,0,0,0.3);
}

.hero-subtitle {
  font-size: clamp(0.85rem, 2vw, 1.05rem);
  letter-spacing: 0.1em;
  color: rgba(250,250,248,0.8);
  margin-bottom: 2.5rem;
}

.hero-btns {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

.hero-btns .btn-primary {
  background: rgba(250,250,248,0.15);
  border-color: rgba(250,250,248,0.7);
  color: var(--color-white);
  backdrop-filter: blur(4px);
}
.hero-btns .btn-primary:hover {
  background: var(--color-white);
  color: var(--color-brown-dark);
}

.hero-btns .btn-outline {
  border-color: rgba(250,250,248,0.5);
  color: rgba(250,250,248,0.85);
}
.hero-btns .btn-outline:hover {
  background: rgba(250,250,248,0.15);
  color: var(--color-white);
}

/* ===== 内页Hero ===== */
.page-hero {
  position: relative;
  height: 45vh;
  min-height: 300px;
  max-height: 500px;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.page-hero-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
}

.page-hero-overlay {
  position: absolute;
  inset: 0;
  background: rgba(42,36,32,0.55);
}

.page-hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  color: var(--color-white);
  padding: 0 2rem;
  max-width: 700px;
}

.page-hero-content h1 {
  font-family: var(--font-serif);
  font-size: clamp(1.6rem, 4vw, 2.8rem);
  font-weight: 600;
  letter-spacing: 0.05em;
  margin-bottom: 0.8rem;
}

.page-hero-content p {
  font-size: 0.9rem;
  color: rgba(250,250,248,0.8);
  letter-spacing: 0.06em;
}

/* ===== 通用Section ===== */
.section { padding: 5rem 0; }

.section-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 2rem;
}

.section-header {
  text-align: center;
  margin-bottom: 3.5rem;
}

.section-tag {
  display: inline-block;
  font-size: 0.72rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-brown);
  border-bottom: 1px solid var(--color-brown);
  padding-bottom: 0.2rem;
  margin-bottom: 1rem;
}

.section-title {
  font-family: var(--font-serif);
  font-size: clamp(1.4rem, 3vw, 2rem);
  font-weight: 600;
  color: var(--color-brown-dark);
  letter-spacing: 0.04em;
  margin-bottom: 0.8rem;
  line-height: 1.4;
}

.section-desc {
  font-size: 0.88rem;
  color: var(--color-gray-dark);
  max-width: 600px;
  margin: 0 auto;
  line-height: 1.9;
}

/* ===== 视频卡片 ===== */
.video-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.video-card {
  background: var(--color-white);
  border: 1px solid var(--color-gray-light);
  cursor: pointer;
  transition: all var(--transition);
  box-shadow: var(--shadow);
}

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

/* 视频缩略图区域 */
.video-thumb {
  position: relative;
  width: 100%;
  padding-top: 56.25%; /* 16:9 */
  overflow: hidden;
  background: var(--color-cream);
}

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

.video-card:hover .video-thumb img {
  transform: scale(1.06);
}

/* ===== 播放按钮（核心：鼠标悬停显示）===== */
.video-play-btn {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) scale(0.8);
  width: 56px;
  height: 56px;
  background: rgba(250,250,248,0.92);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity 0.3s ease, transform 0.3s ease;
  pointer-events: none;
  z-index: 3;
}

/* 三角形播放图标 */
.video-play-btn::after {
  content: '';
  display: block;
  width: 0;
  height: 0;
  border-style: solid;
  border-width: 10px 0 10px 18px;
  border-color: transparent transparent transparent var(--color-brown);
  margin-left: 4px;
}

/* 悬停时显示播放按钮 */
.video-card:hover .video-play-btn {
  opacity: 1;
  transform: translate(-50%, -50%) scale(1);
}

.video-badge {
  position: absolute;
  top: 10px;
  left: 10px;
  background: rgba(42,36,32,0.75);
  color: var(--color-white);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  padding: 0.2rem 0.6rem;
  z-index: 2;
}

.video-duration {
  position: absolute;
  bottom: 10px;
  right: 10px;
  background: rgba(42,36,32,0.75);
  color: var(--color-white);
  font-size: 0.72rem;
  padding: 0.15rem 0.5rem;
  z-index: 2;
}

.video-info {
  padding: 1.2rem 1.4rem 1.4rem;
}

.video-title {
  font-family: var(--font-serif);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-brown-dark);
  line-height: 1.5;
  margin-bottom: 0.6rem;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.video-desc {
  font-size: 0.8rem;
  color: var(--color-gray-dark);
  line-height: 1.7;
  margin-bottom: 0.8rem;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.video-meta {
  display: flex;
  gap: 1rem;
  font-size: 0.75rem;
  color: var(--color-gray);
}

/* ===== 品牌故事 ===== */
.story-section { background: var(--color-cream); }

.story-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 5rem;
  align-items: center;
}

.story-img img {
  width: 100%;
  height: 480px;
  object-fit: cover;
  filter: sepia(15%) contrast(0.95);
}

.story-text h2 {
  font-family: var(--font-serif);
  font-size: clamp(1.3rem, 2.5vw, 1.8rem);
  color: var(--color-brown-dark);
  margin-bottom: 1.5rem;
  line-height: 1.4;
}

.story-text p {
  font-size: 0.9rem;
  color: var(--color-gray-dark);
  line-height: 1.9;
  margin-bottom: 1rem;
}

/* ===== 图片墙 ===== */
.image-wall {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  grid-template-rows: 1fr 1fr;
  gap: 1rem;
  height: 500px;
}

.image-wall-item:first-child {
  grid-row: 1 / 3;
}

.image-wall-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease, filter 0.5s ease;
  filter: sepia(10%) contrast(0.95);
}

.image-wall-item:hover img {
  transform: scale(1.03);
  filter: sepia(0%) contrast(1);
}

.image-wall-item { overflow: hidden; }

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

.ai-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: start;
}

.ai-img img {
  width: 100%;
  height: 420px;
  object-fit: cover;
  filter: sepia(15%);
}

.ai-features { display: flex; flex-direction: column; gap: 1.5rem; }

.ai-feature-item {
  padding: 1.5rem;
  border: 1px solid var(--color-gray-light);
  background: var(--color-white);
  transition: all var(--transition);
}

.ai-feature-item:hover {
  border-color: var(--color-brown);
  box-shadow: var(--shadow);
}

.ai-feature-item h4 {
  font-family: var(--font-serif);
  font-size: 0.95rem;
  color: var(--color-brown-dark);
  margin-bottom: 0.5rem;
}

.ai-feature-item p {
  font-size: 0.82rem;
  color: var(--color-gray-dark);
  line-height: 1.8;
}

/* ===== 达人模块 ===== */
.masters-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.master-card {
  text-align: center;
  padding: 2.5rem 1.5rem;
  border: 1px solid var(--color-gray-light);
  transition: all var(--transition);
}

.master-card:hover {
  border-color: var(--color-brown);
  box-shadow: var(--shadow);
  transform: translateY(-3px);
}

.master-avatar {
  width: 90px;
  height: 90px;
  border-radius: 50%;
  overflow: hidden;
  margin: 0 auto 1.2rem;
  border: 2px solid var(--color-gray-light);
}

.master-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: sepia(10%);
}

.master-name {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  color: var(--color-brown-dark);
  margin-bottom: 0.3rem;
}

.master-role {
  font-size: 0.75rem;
  color: var(--color-brown);
  letter-spacing: 0.08em;
  margin-bottom: 0.8rem;
}

.master-desc {
  font-size: 0.8rem;
  color: var(--color-gray-dark);
  line-height: 1.8;
}

/* ===== 用户评价 ===== */
.reviews-section { background: var(--color-cream); }

.reviews-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.review-card {
  background: var(--color-white);
  padding: 2rem;
  border: 1px solid var(--color-gray-light);
  transition: all var(--transition);
}

.review-card:hover {
  border-color: var(--color-brown);
  box-shadow: var(--shadow);
}

.review-text {
  font-size: 0.85rem;
  color: var(--color-gray-dark);
  line-height: 1.9;
  margin-bottom: 1.5rem;
  font-style: italic;
}

.review-user {
  display: flex;
  align-items: center;
  gap: 0.8rem;
}

.review-avatar {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: var(--color-cream);
  border: 1px solid var(--color-gray-light);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-serif);
  font-size: 0.9rem;
  color: var(--color-brown);
  flex-shrink: 0;
}

.review-name {
  font-size: 0.85rem;
  color: var(--color-brown-dark);
  font-weight: 500;
}

.review-stars {
  font-size: 0.7rem;
  color: var(--color-clay);
  margin-top: 0.1rem;
}

/* ===== 合作伙伴 ===== */
.partners-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 1rem;
}

.partner-item {
  padding: 1.2rem 0.8rem;
  border: 1px solid var(--color-gray-light);
  text-align: center;
  font-size: 0.78rem;
  color: var(--color-gray-dark);
  letter-spacing: 0.04em;
  transition: all var(--transition);
}

.partner-item:hover {
  border-color: var(--color-brown);
  color: var(--color-brown);
  background: var(--color-cream);
}

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

.faq-item {
  border-bottom: 1px solid var(--color-gray-light);
}

.faq-question {
  width: 100%;
  background: none;
  border: none;
  padding: 1.2rem 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  font-family: var(--font-sans);
  font-size: 0.9rem;
  color: var(--color-brown-dark);
  text-align: left;
  transition: color var(--transition);
}

.faq-question:hover,
.faq-question.active { color: var(--color-brown); }

.faq-icon {
  font-size: 1.2rem;
  color: var(--color-brown);
  transition: transform var(--transition);
  flex-shrink: 0;
  margin-left: 1rem;
}

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

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

.faq-answer.open { max-height: 300px; }

.faq-answer-inner {
  padding: 0 0 1.2rem;
  font-size: 0.85rem;
  color: var(--color-gray-dark);
  line-height: 1.9;
}

/* ===== 联系模块 ===== */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.contact-card {
  text-align: center;
  padding: 2.5rem 1.5rem;
  border: 1px solid var(--color-gray-light);
  transition: all var(--transition);
}

.contact-card:hover {
  border-color: var(--color-brown);
  box-shadow: var(--shadow);
}

.contact-card h3 {
  font-family: var(--font-serif);
  font-size: 1rem;
  color: var(--color-brown-dark);
  margin-bottom: 1.5rem;
}

.contact-card p {
  font-size: 0.82rem;
  color: var(--color-gray-dark);
  line-height: 1.8;
}

.qr-placeholder {
  width: 120px;
  height: 120px;
  border: 1px dashed var(--color-gray);
  margin: 0 auto 1.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.72rem;
  color: var(--color-gray);
  line-height: 1.6;
  text-align: center;
}

/* ===== 文章卡片 ===== */
.article-grid {
  display: flex;
  flex-direction: column;
  gap: 2.5rem;
}

.article-card {
  display: grid;
  grid-template-columns: 380px 1fr;
  gap: 2rem;
  border: 1px solid var(--color-gray-light);
  transition: all var(--transition);
  overflow: hidden;
}

.article-card:hover {
  border-color: var(--color-brown);
  box-shadow: var(--shadow);
}

.article-thumb img {
  width: 100%;
  height: 220px;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.article-card:hover .article-thumb img { transform: scale(1.04); }
.article-thumb { overflow: hidden; }

.article-body {
  padding: 1.5rem 1.5rem 1.5rem 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.article-cat {
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  color: var(--color-brown);
  border-bottom: 1px solid var(--color-brown);
  padding-bottom: 0.15rem;
  display: inline-block;
  margin-bottom: 0.8rem;
}

.article-title {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--color-brown-dark);
  line-height: 1.5;
  margin-bottom: 0.8rem;
}

.article-title a:hover { color: var(--color-brown); }

.article-excerpt {
  font-size: 0.82rem;
  color: var(--color-gray-dark);
  line-height: 1.8;
  margin-bottom: 1rem;
}

.article-meta {
  display: flex;
  gap: 1rem;
  font-size: 0.75rem;
  color: var(--color-gray);
}

/* ===== 分页 ===== */
.pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 0.5rem;
  margin-top: 3rem;
}

.pagination a,
.pagination span {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border: 1px solid var(--color-gray-light);
  font-size: 0.82rem;
  color: var(--color-gray-dark);
  transition: all var(--transition);
}

.pagination a:hover {
  border-color: var(--color-brown);
  color: var(--color-brown);
}

.pagination span.current {
  background: var(--color-brown);
  border-color: var(--color-brown);
  color: var(--color-white);
}

/* ===== 页脚 ===== */
.site-footer {
  background: var(--color-brown-dark);
  color: rgba(200,194,184,0.75);
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 2rem;
}

.footer-top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 3rem;
  padding: 4rem 0 3rem;
  border-bottom: 1px solid rgba(200,194,184,0.15);
}

.footer-brand .site-logo {
  color: var(--color-gray-light);
  font-size: 1.4rem;
  display: inline-block;
  margin-bottom: 1rem;
}

.footer-brand p {
  font-size: 0.8rem;
  line-height: 1.9;
  color: rgba(200,194,184,0.6);
}

.footer-col h4 {
  font-family: var(--font-serif);
  font-size: 0.85rem;
  color: var(--color-gray-light);
  margin-bottom: 1.2rem;
  letter-spacing: 0.06em;
}

.footer-col ul { display: flex; flex-direction: column; gap: 0.6rem; }

.footer-col a {
  font-size: 0.8rem;
  color: rgba(200,194,184,0.6);
  transition: color var(--transition);
}
.footer-col a:hover { color: var(--color-gray-light); }

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.5rem 0;
  font-size: 0.75rem;
  color: rgba(200,194,184,0.4);
  flex-wrap: wrap;
  gap: 1rem;
}

.footer-bottom a {
  color: rgba(200,194,184,0.4);
  transition: color var(--transition);
}
.footer-bottom a:hover { color: rgba(200,194,184,0.8); }

.footer-social {
  display: flex;
  gap: 0.8rem;
}

.footer-social a {
  width: 32px;
  height: 32px;
  border: 1px solid rgba(200,194,184,0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.72rem;
  color: rgba(200,194,184,0.5);
  transition: all var(--transition);
}
.footer-social a:hover {
  border-color: rgba(200,194,184,0.6);
  color: rgba(200,194,184,0.9);
}

/* ===== 响应式 ===== */
@media (max-width: 1100px) {
  .partners-grid { grid-template-columns: repeat(3, 1fr); }
  .footer-top { grid-template-columns: 1fr 1fr; gap: 2rem; }
}

@media (max-width: 900px) {
  .video-grid { grid-template-columns: repeat(2, 1fr); }
  .story-grid { grid-template-columns: 1fr; gap: 2rem; }
  .ai-grid { grid-template-columns: 1fr; gap: 2rem; }
  .masters-grid { grid-template-columns: repeat(2, 1fr); }
  .reviews-grid { grid-template-columns: repeat(2, 1fr); }
  .contact-grid { grid-template-columns: repeat(2, 1fr); }
  .image-wall { grid-template-columns: 1fr 1fr; grid-template-rows: auto; height: auto; }
  .image-wall-item:first-child { grid-row: auto; }
  .image-wall-item img { height: 200px; }
  .article-card { grid-template-columns: 1fr; }
  .article-thumb img { height: 220px; }
  .article-body { padding: 1.2rem; }
}

@media (max-width: 768px) {
  .site-nav {
    display: none;
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    background: var(--color-white);
    border-bottom: 1px solid var(--color-gray-light);
    flex-direction: column;
    padding: 1rem;
    gap: 0;
    box-shadow: var(--shadow);
    z-index: 999;
  }
  .site-nav.open { display: flex; }
  .site-nav a {
    padding: 0.8rem 1rem;
    border-radius: 0;
    border-bottom: 1px solid var(--color-gray-light);
    width: 100%;
  }
  .site-nav a:last-child { border-bottom: none; }
  .nav-toggle { display: flex; }

  .hero-banner { height: 65vh; }
  .section { padding: 3.5rem 0; }
  .video-grid { grid-template-columns: 1fr; }
  .masters-grid { grid-template-columns: 1fr; }
  .reviews-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .partners-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-top { grid-template-columns: 1fr; gap: 2rem; padding: 2.5rem 0 2rem; }
  .footer-bottom { flex-direction: column; text-align: center; }

  .story-img img { height: 300px; }
  .ai-img img { height: 280px; }

  .image-wall { grid-template-columns: 1fr; height: auto; }
  .image-wall-item img { height: 220px; }
}

@media (max-width: 480px) {
  .header-inner { padding: 0 1rem; }
  .section-inner { padding: 0 1rem; }
  .breadcrumb { padding: 0.6rem 1rem; }
  .search-bar-inner { padding: 0 1rem; }
  .hero-title { font-size: 1.8rem; }
  .hero-subtitle { font-size: 0.8rem; }
  .hero-btns { flex-direction: column; align-items: center; }
  .btn { padding: 0.65rem 1.5rem; font-size: 0.8rem; }
}

/* ===== 图片懒加载过渡 ===== */
img[data-src] { opacity: 0; transition: opacity 0.4s ease; }
img.loaded { opacity: 1; }

/* ===== 打印样式 ===== */
@media print {
  .site-header, .search-bar, .site-footer, .nav-toggle { display: none; }
  .section { padding: 1rem 0; }
}