/* ============================================================
   AIGC 作品集 — 样式表
   主题：浅色简约
   编辑说明：所有颜色/间距/圆角都定义在 :root 变量中，
            修改对应变量即可全局换肤。
   ============================================================ */

/* ---- 设计令牌（可编辑） ---- */
:root {
  /* 背景色 */
  --bg-primary:   #FFFFFF;
  --bg-secondary: #F8F9FA;
  --bg-tertiary:  #F1F3F5;

  /* 文字 */
  --text-primary:   #111827;
  --text-secondary: #4B5563;
  --text-muted:     #9CA3AF;
  --text-inverse:   #FFFFFF;

  /* 强调色 */
  --accent:        #2563EB;
  --accent-hover:  #1D4ED8;
  --accent-light:  #EFF6FF;

  /* 边框/分割线 */
  --border:        #E5E7EB;
  --border-hover:  #D1D5DB;

  /* 阴影 */
  --shadow-sm:   0 1px 2px rgba(0,0,0,0.04);
  --shadow-md:   0 4px 12px rgba(0,0,0,0.06);
  --shadow-lg:   0 12px 32px rgba(0,0,0,0.10);
  --shadow-xl:   0 24px 48px rgba(0,0,0,0.14);

  /* 圆角 */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;

  /* 间距 */
  --space-xs: 8px;
  --space-sm: 16px;
  --space-md: 24px;
  --space-lg: 40px;
  --space-xl: 64px;
  --space-2xl: 96px;

  /* 容器宽度 */
  --container: 1200px;

  /* 过渡 */
  --ease: cubic-bezier(0.4, 0, 0.2, 1);
  --transition: 0.3s var(--ease);

  /* 字体 */
  --font-sans: 'Inter', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

/* ---- Reset ---- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
body {
  font-family: var(--font-sans);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
img, video { max-width: 100%; display: block; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }

/* ---- 通用容器 ---- */
.section {
  max-width: var(--container);
  margin: 0 auto;
  padding: var(--space-2xl) var(--space-lg);
  padding-right: 140px;
}
.section-alt {
  max-width: none;
  background: var(--bg-secondary);
  margin-left: 50%;
  transform: translateX(-50%);
  width: 100vw;
  padding-left: calc((100vw - var(--container)) / 2 + var(--space-lg));
  padding-right: calc((100vw - var(--container)) / 2 + 140px);
}

/* ---- 章节标题 ---- */
.section-header {
  margin-bottom: var(--space-xl);
  text-align: center;
}
.section-num {
  display: inline-block;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--accent);
  margin-bottom: var(--space-sm);
}
.section-title {
  font-size: 36px;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-sm);
}
.section-desc {
  font-size: 16px;
  color: var(--text-secondary);
  max-width: 560px;
  margin: 0 auto;
}

/* ============================================================
   导航栏
   ============================================================ */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: rgba(255,255,255,0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: var(--transition);
}
.navbar.scrolled {
  border-bottom-color: var(--border);
  box-shadow: var(--shadow-sm);
}
.nav-container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--space-lg);
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 18px;
  letter-spacing: -0.01em;
}
.logo-mark {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  background: var(--text-primary);
  color: var(--text-inverse);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  font-weight: 800;
}

/* 桌面端：右侧悬浮标签栏 */
.nav-links {
  position: fixed;
  top: 50%;
  right: 24px;
  transform: translateY(-50%);
  z-index: 1001;
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 10px;
  max-height: 85vh;
  overflow-y: auto;
  overflow-x: hidden;
  scrollbar-width: none;
  -ms-overflow-style: none;
  background: rgba(255,255,255,0.88);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  transition: var(--transition);
}
.nav-links::-webkit-scrollbar { display: none; }
.nav-links a {
  display: block;
  padding: 8px 14px;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  transition: var(--transition);
  position: relative;
  white-space: nowrap;
}
.nav-links a:hover,
.nav-links a.active {
  color: var(--text-primary);
  background: var(--bg-tertiary);
}
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
}
.nav-toggle span {
  width: 22px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: var(--transition);
}
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ============================================================
   Hero
   ============================================================ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  overflow: hidden;
  background: var(--bg-primary);
}
.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 20% 30%, rgba(37,99,235,0.06), transparent 50%),
    radial-gradient(ellipse at 80% 70%, rgba(99,102,241,0.05), transparent 50%);
}
.hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(0,0,0,0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,0,0,0.02) 1px, transparent 1px);
  background-size: 60px 60px;
}
.hero-content {
  position: relative;
  z-index: 2;
  padding: var(--space-xl) var(--space-lg);
  max-width: 800px;
  display: flex;
  flex-direction: column;
  align-items: center;
}
.hero-tag {
  display: inline-block;
  padding: 6px 16px;
  background: var(--accent-light);
  color: var(--accent);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.05em;
  border-radius: 100px;
  margin-bottom: var(--space-md);
}
.hero-title {
  font-size: 72px;
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.1;
  margin-bottom: var(--space-md);
  background: linear-gradient(135deg, var(--text-primary) 0%, #374151 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-subtitle {
  font-size: 18px;
  color: var(--text-secondary);
  line-height: 1.7;
  max-width: 560px;
  margin: 0 auto var(--space-lg);
}
.hero-cta {
  display: flex;
  gap: var(--space-sm);
  justify-content: center;
}
.btn {
  padding: 14px 32px;
  font-size: 15px;
  font-weight: 600;
  border-radius: var(--radius-sm);
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.btn-primary {
  background: var(--text-primary);
  color: var(--text-inverse);
}
.btn-primary:hover {
  background: var(--accent);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}
.btn-ghost {
  background: transparent;
  color: var(--text-primary);
  border: 1.5px solid var(--border);
}
.btn-ghost:hover {
  border-color: var(--text-primary);
  background: var(--bg-secondary);
}
.hero-scroll {
  position: static;
  margin-top: var(--space-2xl);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}
.scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, transparent, var(--text-muted));
  animation: scrollLine 2s ease-in-out infinite;
}
.scroll-text {
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--text-muted);
  font-weight: 500;
}
@keyframes scrollLine {
  0% { transform: scaleY(0); transform-origin: top; }
  50% { transform: scaleY(1); transform-origin: top; }
  51% { transform-origin: bottom; }
  100% { transform: scaleY(0); transform-origin: bottom; }
}

/* ============================================================
   电商产品图 - 收拢展开式 Accordion
   ============================================================ */
.eco-accordion {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.eco-acc-item {
  border: 2px solid #000;
  border-radius: 12px;
  overflow: hidden;
  transition: background 0.3s ease;
  background: #ececec;
}
.eco-acc-item.active { background: #fff; }
.eco-acc-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 24px;
  cursor: pointer;
  user-select: none;
  transition: background 0.25s;
}
.eco-acc-header:hover { background: rgba(0,0,0,0.04); }
.eco-acc-item.active .eco-acc-header:hover { background: rgba(0,0,0,0.02); }
.eco-acc-header-left { display: flex; align-items: center; gap: 12px; }
.eco-acc-dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: #bbb; flex-shrink: 0; transition: background 0.3s;
}
.eco-acc-item.active .eco-acc-dot { background: #000; }
.eco-acc-title {
  font-size: 17px; font-weight: 600; color: #555;
  transition: color 0.3s;
}
.eco-acc-item.active .eco-acc-title { color: #000; }
.eco-acc-sub {
  font-size: 12.5px; color: #999; margin-top: 3px;
  transition: color 0.3s;
}
.eco-acc-item.active .eco-acc-sub { color: #666; }
.eco-acc-arrow {
  font-size: 20px; color: #888; flex-shrink: 0;
  transition: transform 0.35s ease, color 0.3s;
}
.eco-acc-item.active .eco-acc-arrow {
  transform: rotate(90deg); color: #000;
}
.eco-acc-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.5s ease;
}
.eco-acc-item.active .eco-acc-body { max-height: 8000px; }
.eco-acc-body-inner {
  padding: 16px 24px 24px;
  border-top: 1px solid #eee;
}
.eco-detail-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 20px;
  border: 1.5px solid #333;
  border-radius: 8px;
  background: #fff;
  color: #333;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s;
}
.eco-detail-btn:hover { background: #333; color: #fff; }
.eco-detail-btn .eco-detail-arrow { transition: transform 0.2s; }
.eco-detail-btn:hover .eco-detail-arrow { transform: translateX(2px); }

/* 详情页长图查看器（复用 lightbox 样式） */
.detail-viewer-scroll {
  width: 50vw;
  max-height: 85vh;
  overflow-y: auto;
  overflow-x: hidden;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-xl);
  background: #fff;
  -webkit-overflow-scrolling: touch;
}
.detail-viewer-scroll img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 0;
}
.detail-viewer-scroll img:first-child { border-radius: var(--radius-md) var(--radius-md) 0 0; }
.detail-viewer-scroll img:last-child { border-radius: 0 0 var(--radius-md) var(--radius-md); }
.detail-viewer-scroll img:only-child { border-radius: var(--radius-md); }
.detail-viewer-caption {
  color: #888;
  font-size: 14px;
  text-align: center;
  padding: 12px 0;
  margin: 0;
  background: #fff;
}
@media (max-width: 768px) {
  .detail-viewer-scroll { width: 85vw; }
}

/* ============================================================
   Tab 切换
   ============================================================ */
.tabs-wrapper {
  display: flex;
  justify-content: center;
  gap: var(--space-xs);
  margin-bottom: var(--space-lg);
  flex-wrap: wrap;
}
.tab-btn {
  padding: 10px 24px;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-secondary);
  background: var(--bg-tertiary);
  border-radius: 100px;
  transition: var(--transition);
}
.tab-btn:hover { color: var(--text-primary); }
.tab-btn.active {
  background: var(--text-primary);
  color: var(--text-inverse);
}

/* ============================================================
   电商产品图
   ============================================================ */
.eco-set { animation: fadeInUp 0.5s var(--ease); }
.eco-set-title {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 8px;
  text-align: center;
}
.eco-set-desc {
  text-align: center;
  color: var(--text-secondary);
  font-size: 14px;
  margin-bottom: var(--space-lg);
}

/* 子区域标签 */
.sub-label {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: var(--space-md);
  margin-top: var(--space-lg);
}
.sub-label:first-of-type { margin-top: 0; }
.sub-label-text {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--text-muted);
  white-space: nowrap;
}
.sub-label-line {
  flex: 1;
  height: 1px;
  background: var(--border);
}

/* 主图网格 (5张 1:1) */
.main-image-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: var(--space-sm);
}
.main-image-item {
  position: relative;
  aspect-ratio: 1;
  border-radius: var(--radius-md);
  overflow: hidden;
  cursor: pointer;
  background: var(--bg-tertiary);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}
.main-image-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}
.main-image-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s var(--ease);
}
.main-image-item:hover img { transform: scale(1.05); }

/* 详情页长图 — 790px宽 3:4可滚动窗口 */
.detail-image-wrapper {
  max-width: 790px;
  margin: 0 auto;
  border-radius: var(--radius-lg);
  overflow: hidden;
  overflow-y: auto;
  box-shadow: var(--shadow-md);
  aspect-ratio: 3 / 4;
  position: relative;
  background: var(--bg-tertiary);
  transition: var(--transition);
  scrollbar-width: thin;
  scrollbar-color: var(--text-muted) transparent;
  cursor: grab;
}
.detail-image-wrapper:active { cursor: grabbing; }
.detail-image-wrapper::-webkit-scrollbar { width: 6px; }
.detail-image-wrapper::-webkit-scrollbar-track { background: transparent; }
.detail-image-wrapper::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }
.detail-image-wrapper:hover { box-shadow: var(--shadow-lg); }
.detail-image-wrapper img {
  width: 100%;
  height: auto;
  display: block;
}
/* 底部渐变提示（可滚动时显示） */
.detail-hint {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 48px;
  background: linear-gradient(to top, var(--bg-tertiary), transparent);
  pointer-events: none;
  z-index: 5;
  transition: opacity 0.3s;
  display: flex;
  align-items: flex-end;
  justify-content: center;
  padding-bottom: 8px;
}
.detail-hint-text {
  font-size: 11px;
  color: var(--text-muted);
  letter-spacing: 0.1em;
  font-weight: 500;
}
.detail-image-wrapper.scrolled-bottom .detail-hint { opacity: 0; }

/* Banner 海报 (1920×600 宽幅) */
.banner-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-sm);
}
.banner-item {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  cursor: pointer;
  background: var(--bg-tertiary);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  aspect-ratio: 1920 / 600;
}
.banner-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}
.banner-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s var(--ease);
}
.banner-item:hover img { transform: scale(1.05); }

/* 宣传海报 (9:16 竖版) */
.poster-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-sm);
  max-width: 520px;
  margin: 0 auto;
}
.poster-item {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  cursor: pointer;
  background: var(--bg-tertiary);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  aspect-ratio: 9 / 16;
}
.poster-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}
.poster-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s var(--ease);
}
.poster-item:hover img { transform: scale(1.05); }

/* ============================================================
   品牌IP设定 — 3:4 自动轮播
   ============================================================ */
.ip-set { animation: fadeInUp 0.5s var(--ease); }

.ip-carousel {
  position: relative;
  max-width: 520px;
  margin: 0 auto;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  aspect-ratio: 3 / 4;
  background: var(--bg-tertiary);
}
.ip-carousel-track {
  position: relative;
  width: 100%;
  height: 100%;
}
.ip-carousel-slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity 0.8s var(--ease);
}
.ip-carousel-slide.active {
  opacity: 1;
  z-index: 2;
}
.ip-carousel-slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  cursor: pointer;
}

/* 页码指示器（右下角） */
.ip-carousel-page {
  position: absolute;
  bottom: 16px;
  right: 16px;
  padding: 6px 14px;
  background: rgba(0,0,0,0.6);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  color: #fff;
  font-size: 13px;
  font-weight: 600;
  border-radius: 100px;
  z-index: 10;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.05em;
}

/* 轮播底部进度条 */
.ip-carousel-progress {
  position: absolute;
  bottom: 0;
  left: 0;
  height: 3px;
  background: var(--accent);
  z-index: 10;
  width: 0%;
}

/* 轮播左右导航点 */
.ip-carousel-dots {
  position: absolute;
  bottom: 16px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 6px;
  z-index: 10;
}
.ip-carousel-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: rgba(255,255,255,0.4);
  transition: var(--transition);
  cursor: pointer;
}
.ip-carousel-dot.active {
  background: #fff;
  width: 20px;
  border-radius: 4px;
}

/* ============================================================
   视频网格
   ============================================================ */
.filter-bar {
  display: flex;
  justify-content: center;
  gap: var(--space-xs);
  margin-bottom: var(--space-lg);
  flex-wrap: wrap;
}
.filter-btn {
  padding: 8px 20px;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary);
  background: var(--bg-tertiary);
  border-radius: 100px;
  transition: var(--transition);
}
.filter-btn:hover { color: var(--text-primary); }
.filter-btn.active {
  background: var(--text-primary);
  color: var(--text-inverse);
}

.video-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-md);
}
.video-grid-vertical {
  grid-template-columns: repeat(2, 1fr);
  max-width: 640px;
  margin: 0 auto;
}
.video-grid-comic {
  grid-template-columns: 1fr;
  max-width: 900px;
  margin: 0 auto;
}

.video-card {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  cursor: pointer;
  background: var(--bg-tertiary);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}
.video-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}
.video-card.hidden { display: none; }

.video-thumb {
  position: relative;
  overflow: hidden;
}
.video-thumb img,
.video-thumb video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s var(--ease);
}
.video-card:hover .video-thumb img,
.video-card:hover .video-thumb video { transform: scale(1.05); }

/* 播放按钮 */
.play-btn {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: rgba(255,255,255,0.9);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
  opacity: 0;
}
.video-card:hover .play-btn {
  opacity: 1;
  transform: translate(-50%, -50%) scale(1.1);
  background: var(--accent);
}
.play-btn svg { color: var(--text-primary); transition: var(--transition); }
.video-card:hover .play-btn svg { color: var(--text-inverse); }

/* 视频比例标签 */
.ratio-badge {
  position: absolute;
  top: 12px;
  right: 12px;
  padding: 4px 10px;
  font-size: 11px;
  font-weight: 600;
  color: var(--text-inverse);
  background: rgba(0,0,0,0.6);
  backdrop-filter: blur(4px);
  border-radius: 4px;
  letter-spacing: 0.02em;
}

/* 视频信息 */
.video-info {
  padding: 16px 20px;
}
.video-title {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 4px;
  color: var(--text-primary);
}
.video-desc {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* 视频卡片比例 */
.video-card[data-ratio="16:9"] .video-thumb { aspect-ratio: 16 / 9; }
.video-card[data-ratio="9:16"] .video-thumb { aspect-ratio: 9 / 16; }

/* 竖版视频网格特殊处理 */
.video-grid-vertical .video-card[data-ratio="9:16"] .video-thumb { aspect-ratio: 9 / 16; }
.video-grid-comic .video-card[data-ratio="16:9"] .video-thumb { aspect-ratio: 16 / 9; }

/* ============================================================
   关于
   ============================================================ */
.about-wrapper {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
  align-items: start;
}
.about-bio h3 {
  font-size: 28px;
  font-weight: 700;
  margin-bottom: 4px;
}
.about-role {
  font-size: 15px;
  font-weight: 500;
  color: var(--accent);
  margin-bottom: var(--space-md);
}
.about-text {
  font-size: 16px;
  line-height: 1.8;
  color: var(--text-secondary);
}
.about-skills h4 {
  font-size: 14px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  margin-bottom: var(--space-md);
}
.skill-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.skill-tag {
  padding: 8px 16px;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-secondary);
  background: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: 100px;
  transition: var(--transition);
}
.skill-tag:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-light);
}

/* ============================================================
   页脚
   ============================================================ */
.footer {
  background: var(--text-primary);
  color: var(--text-inverse);
  padding: var(--space-xl) var(--space-lg) var(--space-lg);
  position: relative;
}
.footer-content {
  max-width: var(--container);
  margin: 0 auto;
}
.footer-info {
  display: flex;
  gap: var(--space-xl);
  margin-bottom: var(--space-lg);
  flex-wrap: wrap;
}
.footer-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.footer-label {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: rgba(255,255,255,0.5);
}
.footer-value {
  font-size: 16px;
  font-weight: 500;
}
.footer-copy {
  font-size: 13px;
  color: rgba(255,255,255,0.4);
  padding-top: var(--space-lg);
  border-top: 1px solid rgba(255,255,255,0.1);
}
.back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--text-primary);
  color: var(--text-inverse);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-md);
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
  z-index: 999;
}
.back-to-top.visible {
  opacity: 1;
  visibility: visible;
}
.back-to-top:hover {
  background: var(--accent);
  transform: translateY(-3px);
}

/* ============================================================
   图片灯箱
   ============================================================ */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 2000;
  background: rgba(0,0,0,0.92);
  backdrop-filter: blur(8px);
  display: none;
  align-items: center;
  justify-content: center;
  padding: 40px;
}
.lightbox.active { display: flex; }
.lightbox-content {
  max-width: 90vw;
  max-height: 85vh;
  text-align: center;
}
.lightbox-content img {
  max-width: 100%;
  max-height: 75vh;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-xl);
}
.lightbox-caption {
  color: rgba(255,255,255,0.8);
  font-size: 14px;
  margin-top: 16px;
}
.lightbox-close,
.lightbox-prev,
.lightbox-next {
  position: absolute;
  color: rgba(255,255,255,0.8);
  font-size: 36px;
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  transition: var(--transition);
  user-select: none;
}
.lightbox-close:hover,
.lightbox-prev:hover,
.lightbox-next:hover {
  color: #fff;
  background: rgba(255,255,255,0.1);
}
.lightbox-close { top: 20px; right: 20px; }
.lightbox-prev { left: 20px; top: 50%; transform: translateY(-50%); }
.lightbox-next { right: 20px; top: 50%; transform: translateY(-50%); }

/* ============================================================
   视频弹窗
   ============================================================ */
.video-modal {
  position: fixed;
  inset: 0;
  z-index: 2000;
  background: rgba(0,0,0,0.92);
  backdrop-filter: blur(8px);
  display: none;
  align-items: center;
  justify-content: center;
  padding: 40px;
}
.video-modal.active { display: flex; }
.video-modal-content {
  max-width: 900px;
  width: 100%;
  max-height: calc(100vh - 80px);
  background: #000;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-xl);
  display: flex;
  flex-direction: column;
}
/* 竖版视频弹窗：限制宽度，按高度自适应 */
.video-modal-content.vertical {
  max-width: 420px;
}
.video-modal-content video {
  width: 100%;
  height: auto;
  max-height: calc(100vh - 140px);
  display: block;
  background: #000;
  object-fit: contain;
}
.video-modal-info {
  padding: 20px 24px;
  background: var(--bg-primary);
}
.video-modal-info h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 6px;
}
.video-modal-info p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.5;
}
.video-modal-close {
  position: absolute;
  top: 20px;
  right: 20px;
  color: rgba(255,255,255,0.8);
  font-size: 36px;
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  transition: var(--transition);
}
.video-modal-close:hover {
  color: #fff;
  background: rgba(255,255,255,0.1);
}

/* ============================================================
   动画
   ============================================================ */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s var(--ease), transform 0.6s var(--ease);
}
.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ============================================================
   响应式
   ============================================================ */
@media (max-width: 1024px) {
  .hero-title { font-size: 56px; }
  .main-image-grid { grid-template-columns: repeat(3, 1fr); }
  .video-grid { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 768px) {
  :root {
    --space-2xl: 64px;
    --space-xl: 40px;
  }
  .nav-links {
    position: fixed;
    top: 72px;
    left: 0; right: 0;
    background: var(--bg-primary);
    flex-direction: column;
    padding: var(--space-sm) var(--space-lg);
    gap: 0;
    border: none;
    border-bottom: 1px solid var(--border);
    border-radius: 0;
    box-shadow: var(--shadow-md);
    transform: translateY(-150%);
    transition: var(--transition);
  }
  .nav-links.open { transform: translateY(0); }
  .nav-links a {
    padding: 14px 0;
    border-bottom: 1px solid var(--border);
    border-radius: 0;
  }
  .nav-toggle { display: flex; }

  .section { padding-right: var(--space-lg); }
  .section-alt { padding-right: var(--space-lg); }

  .hero-title { font-size: 40px; }
  .hero-subtitle { font-size: 16px; }
  .section-title { font-size: 28px; }
  .section-desc { font-size: 14px; }

  .main-image-grid { grid-template-columns: repeat(2, 1fr); }
  .banner-grid { grid-template-columns: 1fr; }
  .poster-grid { max-width: 100%; }
  .video-grid { grid-template-columns: repeat(2, 1fr); }
  .video-grid-vertical { grid-template-columns: 1fr; max-width: 320px; }
  .video-grid-comic { max-width: 100%; }

  .about-wrapper { grid-template-columns: 1fr; gap: var(--space-lg); }
  .footer-info { flex-direction: column; gap: var(--space-md); }

  .lightbox,
  .video-modal { padding: 20px; }
  .lightbox-close,
  .video-modal-close { top: 12px; right: 12px; }
  .lightbox-prev { left: 8px; }
  .lightbox-next { right: 8px; }
}

@media (max-width: 480px) {
  .hero-title { font-size: 32px; }
  .hero-cta { flex-direction: column; }
  .btn { width: 100%; justify-content: center; }
  .main-image-grid { grid-template-columns: 1fr 1fr; }
  .video-grid { grid-template-columns: 1fr; }
  .tabs-wrapper { gap: 4px; }
  .tab-btn { padding: 8px 16px; font-size: 13px; }
}