/* ============================================
   Glassmorphism Deep — 毛玻璃景深风
   三层景深 × 动态渐变背景 × 毛玻璃卡片 × 光影折射
   高端科技媒体 × 沉浸式体验 × 视差滚动
   ============================================ */

/* ===== 全局重置与变量 ===== */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

:root {
  /* 深色基底 */
  --bg-deep: #0a0d14;
  --bg-deep-secondary: #0f1420;

  /* 毛玻璃层级 */
  --glass-heavy: rgba(255, 255, 255, 0.08);
  --glass-medium: rgba(255, 255, 255, 0.05);
  --glass-light: rgba(255, 255, 255, 0.03);
  --glass-accent: rgba(99, 179, 237, 0.12);

  /* 边框高光 */
  --glass-border: rgba(255, 255, 255, 0.12);
  --glass-border-hover: rgba(255, 255, 255, 0.25);
  --glass-border-accent: rgba(99, 179, 237, 0.3);

  /* 光影效果 */
  --glow-primary: rgba(99, 179, 237, 0.15);
  --glow-secondary: rgba(167, 139, 250, 0.12);
  --glow-warm: rgba(251, 146, 60, 0.1);

  /* 文字颜色 */
  --text-primary: #f0f4f8;
  --text-secondary: #b8c5d6;
  --text-muted: #7a8ba3;

  /* 强调色 */
  --accent-blue: #63b3ed;
  --accent-purple: #a78bfa;
  --accent-cyan: #38bdf8;
  --accent-amber: #fb923c;
  --accent-mint: #34d399;

  /* 字体 */
  --font-display: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  /* 动画曲线 */
  --ease-smooth: cubic-bezier(0.23, 1, 0.32, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);

  /* 圆角 */
  --radius-sm: 12px;
  --radius-md: 20px;
  --radius-lg: 28px;
  --radius-xl: 40px;

  /* 毛玻璃阴影 */
  --shadow-glass-1:
    0 2px 12px rgba(0, 0, 0, 0.15),
    0 8px 32px rgba(0, 0, 0, 0.12),
    inset 0 1px 0 rgba(255, 255, 255, 0.08);
  --shadow-glass-2:
    0 4px 20px rgba(0, 0, 0, 0.18),
    0 16px 48px rgba(0, 0, 0, 0.15),
    inset 0 1px 0 rgba(255, 255, 255, 0.1);
  --shadow-glass-3:
    0 8px 32px rgba(0, 0, 0, 0.2),
    0 32px 80px rgba(0, 0, 0, 0.18),
    inset 0 1px 0 rgba(255, 255, 255, 0.12);
}

/* ===== Body — 底层：动态渐变背景 ===== */
body {
  font-family: var(--font-body);
  background: var(--bg-deep);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
  position: relative;
  -webkit-font-smoothing: antialiased;
}

/* 底层动态渐变背景 — 最底层景深 */
body::before {
  content: '';
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  z-index: 0;
  background:
    radial-gradient(ellipse at 20% 20%, rgba(99, 179, 237, 0.15) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 80%, rgba(167, 139, 250, 0.12) 0%, transparent 50%),
    radial-gradient(ellipse at 40% 70%, rgba(251, 146, 60, 0.08) 0%, transparent 40%),
    radial-gradient(ellipse at 70% 30%, rgba(56, 189, 248, 0.1) 0%, transparent 45%);
  animation: gd-bg-drift 20s ease-in-out infinite alternate;
  pointer-events: none;
}

@keyframes gd-bg-drift {
  0% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(-2%, 2%) scale(1.05); }
  100% { transform: translate(1%, -1%) scale(1); }
}

/* 微粒子动画层 */
body::after {
  content: '';
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  z-index: 0;
  background-image:
    radial-gradient(2px 2px at 20% 30%, rgba(255, 255, 255, 0.04), transparent),
    radial-gradient(2px 2px at 40% 70%, rgba(255, 255, 255, 0.03), transparent),
    radial-gradient(1px 1px at 60% 20%, rgba(255, 255, 255, 0.05), transparent),
    radial-gradient(2px 2px at 80% 50%, rgba(255, 255, 255, 0.04), transparent);
  background-size: 200px 200px;
  animation: gd-particle-float 30s linear infinite;
  pointer-events: none;
}

@keyframes gd-particle-float {
  0% { transform: translateY(0, 0); }
  100% { transform: translateY(-100px, -100px); }
}

/* ===== 导航栏 — 顶层：高透明度毛玻璃 ===== */
.gd-nav {
  position: sticky;
  top: 0;
  z-index: 200;
  background: var(--glass-light);
  backdrop-filter: blur(32px) saturate(180%);
  -webkit-backdrop-filter: blur(32px) saturate(180%);
  border-bottom: 1px solid var(--glass-border);
  box-shadow: var(--shadow-glass-1);
}

.gd-nav-inner {
  max-width: 1600px;
  margin: 0 auto;
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 60px;
}

.gd-logo {
  display: flex;
  align-items: center;
  gap: 14px;
  text-decoration: none;
}

.gd-logo-mark {
  width: 42px;
  height: 42px;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  font-weight: 800;
  color: #fff;
  box-shadow:
    0 4px 20px rgba(99, 179, 237, 0.4),
    0 0 40px rgba(99, 179, 237, 0.2);
  position: relative;
}

/* Logo 光晕效果 */
.gd-logo-mark::before {
  content: '';
  position: absolute;
  inset: -6px;
  border-radius: 20px;
  border: 2px solid rgba(99, 179, 237, 0.2);
  animation: gd-glow-pulse 3s ease-in-out infinite;
}

@keyframes gd-glow-pulse {
  0%, 100% { opacity: 0.3; transform: scale(1); }
  50% { opacity: 0.6; transform: scale(1.1); }
}

.gd-logo-text {
  font-size: 20px;
  font-weight: 600;
  letter-spacing: -0.5px;
  color: var(--text-primary);
}

.gd-nav-links {
  display: flex;
  align-items: center;
  gap: 40px;
  list-style: none;
}

.gd-nav-links a {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 1.2px;
  text-transform: uppercase;
  color: var(--text-secondary);
  transition: all 0.3s var(--ease-smooth);
  position: relative;
  padding: 6px 0;
}

.gd-nav-links a:hover {
  color: var(--accent-blue);
}

.gd-nav-links a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent-blue), var(--accent-cyan));
  transition: width 0.3s var(--ease-smooth);
  box-shadow: 0 0 8px var(--accent-blue);
}

.gd-nav-links a:hover::after {
  width: 100%;
}

.gd-nav-right {
  display: flex;
  align-items: center;
  gap: 16px;
}

.gd-theme-toggle {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: var(--glass-medium);
  backdrop-filter: blur(16px);
  border: 1px solid var(--glass-border);
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.3s var(--ease-smooth);
  font-size: 16px;
}

.gd-theme-toggle:hover {
  background: var(--glass-heavy);
  border-color: var(--glass-border-hover);
  color: var(--accent-blue);
  box-shadow:
    0 0 20px rgba(99, 179, 237, 0.2),
    inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

.gd-search-btn {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: var(--glass-medium);
  backdrop-filter: blur(16px);
  border: 1px solid var(--glass-border);
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.3s var(--ease-smooth);
}

.gd-search-btn:hover {
  background: var(--glass-heavy);
  border-color: var(--glass-border-hover);
  color: var(--accent-blue);
  box-shadow: 0 0 20px rgba(99, 179, 237, 0.2);
}

.gd-search-btn svg {
  width: 18px;
  height: 18px;
}

.gd-mobile-menu-btn {
  display: none;
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: var(--glass-medium);
  backdrop-filter: blur(16px);
  border: 1px solid var(--glass-border);
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  cursor: pointer;
  transition: all 0.3s;
}

.gd-mobile-menu-btn span {
  width: 18px;
  height: 2px;
  background: var(--text-secondary);
  border-radius: 1px;
  transition: all 0.3s;
}

.gd-mobile-menu-btn.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.gd-mobile-menu-btn.active span:nth-child(2) {
  opacity: 0;
}

.gd-mobile-menu-btn.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* ===== 搜索覆盖层 ===== */
.gd-search-overlay {
  position: fixed;
  inset: 0;
  z-index: 300;
  background: rgba(10, 13, 20, 0.92);
  backdrop-filter: blur(40px);
  -webkit-backdrop-filter: blur(40px);
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding-top: 12vh;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.4s var(--ease-smooth);
}

.gd-search-overlay.active {
  opacity: 1;
  pointer-events: all;
}

.gd-search-overlay-inner {
  width: 100%;
  max-width: 680px;
  background: var(--glass-medium);
  backdrop-filter: blur(32px) saturate(180%);
  -webkit-backdrop-filter: blur(32px) saturate(180%);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: 32px;
  position: relative;
  max-height: 70vh;
  overflow-y: auto;
  box-shadow: var(--shadow-glass-3);
}

.gd-search-close {
  position: absolute;
  top: 16px;
  right: 20px;
  width: 32px;
  height: 32px;
  background: var(--glass-light);
  backdrop-filter: blur(12px);
  border: 1px solid var(--glass-border);
  border-radius: 8px;
  color: var(--text-muted);
  font-size: 24px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s;
}

.gd-search-close:hover {
  background: var(--glass-medium);
  border-color: var(--glass-border-hover);
  color: var(--text-primary);
}

.gd-search-box {
  display: flex;
  align-items: center;
  gap: 14px;
  border-bottom: 2px solid var(--glass-border);
  padding-bottom: 18px;
  margin-bottom: 20px;
}

.gd-search-box svg {
  width: 22px;
  height: 22px;
  color: var(--text-muted);
  flex-shrink: 0;
}

.gd-search-input {
  width: 100%;
  border: none;
  outline: none;
  background: transparent;
  font-size: 18px;
  font-family: var(--font-body);
  color: var(--text-primary);
}

.gd-search-input::placeholder {
  color: var(--text-muted);
}

.gd-search-results {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.gd-search-result-item {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 12px;
  border-radius: var(--radius-sm);
  background: var(--glass-light);
  backdrop-filter: blur(12px);
  border: 1px solid transparent;
  text-decoration: none;
  color: inherit;
  transition: all 0.3s;
}

.gd-search-result-item:hover {
  background: var(--glass-medium);
  border-color: var(--glass-border);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
}

.gd-search-result-thumb {
  width: 64px;
  height: 44px;
  border-radius: 8px;
  overflow: hidden;
  flex-shrink: 0;
  background: var(--bg-deep-secondary);
}

.gd-search-result-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.gd-search-result-info {
  flex: 1;
  min-width: 0;
}

.gd-search-result-cat {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--accent-blue);
  margin-bottom: 3px;
}

.gd-search-result-title {
  font-size: 14px;
  color: var(--text-primary);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.gd-search-empty {
  text-align: center;
  padding: 28px;
  color: var(--text-muted);
  font-size: 14px;
}

/* ===== Hero 焦点新闻 — 中间层景深 ===== */
.gd-hero {
  position: relative;
  z-index: 10;
  max-width: 1600px;
  margin: 0 auto;
  padding: 60px 60px 0;
  transform-style: preserve-3d;
  perspective: 1000px;
}

.gd-hero-card {
  position: relative;
  display: block;
  border-radius: var(--radius-xl);
  overflow: hidden;
  background: var(--glass-medium);
  backdrop-filter: blur(28px) saturate(180%);
  -webkit-backdrop-filter: blur(28px) saturate(180%);
  border: 1px solid var(--glass-border);
  box-shadow: var(--shadow-glass-3);
  transition: all 0.6s var(--ease-smooth);
  transform: translateZ(0);
}

.gd-hero-card:hover {
  transform: translateY(-12px) translateZ(20px);
  box-shadow:
    var(--shadow-glass-3),
    0 20px 60px rgba(99, 179, 237, 0.15);
  border-color: var(--glass-border-accent);
}

.gd-hero-card-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
}

.gd-hero-card-img {
  position: relative;
  height: 520px;
  overflow: hidden;
}

.gd-hero-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.8s var(--ease-smooth);
}

.gd-hero-card:hover .gd-hero-card-img img {
  transform: scale(1.05);
}

/* 图片上的光晕效果 */
.gd-hero-card-img::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg,
    transparent 0%,
    rgba(99, 179, 237, 0.08) 50%,
    transparent 100%);
  opacity: 0;
  transition: opacity 0.5s;
}

.gd-hero-card:hover .gd-hero-card-img::after {
  opacity: 1;
}

.gd-hero-card-body {
  padding: 56px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  position: relative;
  background: var(--glass-light);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
}

/* 卡片边缘光效 */
.gd-hero-card-body::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg,
    var(--accent-blue),
    var(--accent-purple),
    var(--accent-cyan));
  opacity: 0.6;
  box-shadow: 0 0 20px var(--accent-blue);
}

.gd-hero-label {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--accent-amber);
  margin-bottom: 12px;
}

.gd-hero-card-tag {
  display: inline-block;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  padding: 6px 14px;
  border-radius: 20px;
  background: var(--glass-accent);
  backdrop-filter: blur(12px);
  color: var(--accent-blue);
  margin-bottom: 20px;
  border: 1px solid var(--glass-border-accent);
  box-shadow: 0 2px 12px rgba(99, 179, 237, 0.2);
}

.gd-hero-card-title {
  font-size: clamp(32px, 4vw, 48px);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.5px;
  color: var(--text-primary);
  margin-bottom: 18px;
}

.gd-hero-card-excerpt {
  font-size: 16px;
  line-height: 1.7;
  color: var(--text-secondary);
  margin-bottom: 28px;
  display: -webkit-box;
  -webkit-line-clamp: 4;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.gd-hero-card-cta {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--accent-blue);
  transition: all 0.3s var(--ease-smooth);
}

.gd-hero-card-cta svg {
  width: 16px;
  height: 16px;
  transition: transform 0.3s var(--ease-smooth);
}

.gd-hero-card:hover .gd-hero-card-cta svg {
  transform: translateX(4px);
}

/* ===== Section 分隔线 ===== */
.gd-divider {
  max-width: 1600px;
  margin: 0 auto;
  padding: 40px 60px 0;
}

.gd-divider-line {
  height: 1px;
  background: linear-gradient(90deg,
    transparent 0%,
    var(--glass-border) 20%,
    var(--glass-border) 80%,
    transparent 100%);
  opacity: 0.3;
}

/* ===== Skyline Grid Section — 中间层 ===== */
.gd-section {
  position: relative;
  z-index: 10;
  max-width: 1600px;
  margin: 0 auto;
  padding: 48px 60px 0;
}

.gd-section-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  margin-bottom: 36px;
}

.gd-section-label {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--accent-purple);
  margin-bottom: 8px;
}

.gd-section-title {
  font-size: clamp(28px, 3.5vw, 42px);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.5px;
  color: var(--text-primary);
}

/* ===== Skyline Grid 卡片 ===== */
.gd-skyline-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-template-rows: repeat(2, auto);
  gap: 28px;
}

.gd-building {
  position: relative;
  display: flex;
  flex-direction: column;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--glass-medium);
  backdrop-filter: blur(24px) saturate(180%);
  -webkit-backdrop-filter: blur(24px) saturate(180%);
  border: 1px solid var(--glass-border);
  box-shadow: var(--shadow-glass-2);
  transition: all 0.5s var(--ease-smooth);
  transform: translateZ(0);
  text-decoration: none;
  color: inherit;
}

/* 不同高度的卡片 */
.gd-building--tall {
  grid-row: span 2;
}

.gd-building--short {
  min-height: 240px;
}

.gd-building:hover {
  transform: translateY(-10px) translateZ(15px);
  box-shadow:
    var(--shadow-glass-3),
    0 16px 48px rgba(99, 179, 237, 0.1);
  border-color: var(--glass-border-hover);
}

.gd-building-img {
  position: relative;
  width: 100%;
  aspect-ratio: 16/10;
  overflow: hidden;
}

.gd-building--tall .gd-building-img {
  flex: 1;
  aspect-ratio: auto;
}

.gd-building-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s var(--ease-smooth);
}

.gd-building:hover .gd-building-img img {
  transform: scale(1.06);
}

/* 图片边缘光效 */
.gd-building-img::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, transparent 60%, rgba(10, 13, 20, 0.4) 100%);
  pointer-events: none;
}

.gd-building-tag {
  position: absolute;
  top: 16px;
  left: 16px;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  padding: 6px 12px;
  border-radius: 20px;
  background: var(--glass-accent);
  backdrop-filter: blur(12px);
  color: var(--accent-blue);
  z-index: 2;
  border: 1px solid var(--glass-border-accent);
}

.gd-building-body {
  padding: 22px 24px 26px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.gd-building-title {
  font-size: 18px;
  font-weight: 700;
  line-height: 1.3;
  color: var(--text-primary);
  margin-bottom: 10px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.gd-building-excerpt {
  font-size: 14px;
  line-height: 1.6;
  color: var(--text-secondary);
  margin-bottom: 16px;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  flex: 1;
}

.gd-building-read {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 1.2px;
  text-transform: uppercase;
  color: var(--accent-cyan);
  transition: all 0.3s var(--ease-smooth);
}

.gd-building-read svg {
  width: 14px;
  height: 14px;
  transition: transform 0.3s var(--ease-smooth);
}

.gd-building:hover .gd-building-read svg {
  transform: translateX(4px);
}

/* ===== Alternating Row — 前景层 ===== */
.gd-alternating-row {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
}

.gd-alternating-row.reverse {
  margin-top: 28px;
}

.gd-alt-building {
  position: relative;
  display: flex;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--glass-medium);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border: 1px solid var(--glass-border);
  box-shadow: var(--shadow-glass-1);
  transition: all 0.5s var(--ease-smooth);
  transform: translateZ(0);
  text-decoration: none;
  color: inherit;
}

.gd-alt-building:hover {
  transform: translateY(-8px) translateZ(10px);
  box-shadow:
    var(--shadow-glass-2),
    0 12px 40px rgba(99, 179, 237, 0.1);
  border-color: var(--glass-border-hover);
}

.gd-alt-building-img {
  width: 42%;
  overflow: hidden;
  flex-shrink: 0;
}

.gd-alt-building-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s var(--ease-smooth);
}

.gd-alt-building:hover .gd-alt-building-img img {
  transform: scale(1.06);
}

.gd-alt-building-body {
  flex: 1;
  padding: 24px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.gd-alt-building-tag {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--accent-purple);
  margin-bottom: 8px;
}

.gd-alt-building-title {
  font-size: 17px;
  font-weight: 700;
  line-height: 1.3;
  color: var(--text-primary);
  margin-bottom: 10px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.gd-alt-building-excerpt {
  font-size: 13px;
  line-height: 1.6;
  color: var(--text-secondary);
  margin-bottom: 14px;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.gd-alt-building-read {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 1.2px;
  text-transform: uppercase;
  color: var(--accent-cyan);
}

.gd-alt-building-read svg {
  width: 14px;
  height: 14px;
  transition: transform 0.3s var(--ease-smooth);
}

.gd-alt-building:hover .gd-alt-building-read svg {
  transform: translateX(4px);
}

/* ===== Compact Row — 顶层悬浮卡片 ===== */
.gd-row-scroll {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 20px;
}

.gd-compact-building {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--glass-light);
  backdrop-filter: blur(16px) saturate(180%);
  -webkit-backdrop-filter: blur(16px) saturate(180%);
  border: 1px solid var(--glass-border);
  box-shadow: var(--shadow-glass-1);
  transition: all 0.4s var(--ease-smooth);
  transform: translateZ(0);
  text-decoration: none;
  color: inherit;
}

.gd-compact-building:hover {
  transform: translateY(-6px) translateZ(8px);
  box-shadow:
    var(--shadow-glass-2),
    0 8px 24px rgba(99, 179, 237, 0.08);
  border-color: var(--glass-border-hover);
}

.gd-compact-building-img {
  position: relative;
  width: 100%;
  aspect-ratio: 16/9;
  overflow: hidden;
}

.gd-compact-building-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s var(--ease-smooth);
}

.gd-compact-building:hover .gd-compact-building-img img {
  transform: scale(1.05);
}

.gd-compact-building-tag {
  position: absolute;
  top: 12px;
  left: 12px;
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  padding: 4px 10px;
  border-radius: 16px;
  background: var(--glass-accent);
  backdrop-filter: blur(8px);
  color: var(--accent-blue);
  z-index: 2;
  border: 1px solid var(--glass-border-accent);
}

.gd-compact-building-body {
  padding: 16px;
}

.gd-compact-building-title {
  font-size: 14px;
  font-weight: 600;
  line-height: 1.3;
  color: var(--text-primary);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ===== Footer — 底层 ===== */
.gd-footer {
  position: relative;
  z-index: 5;
  margin-top: 80px;
  background: var(--glass-medium);
  backdrop-filter: blur(32px) saturate(180%);
  -webkit-backdrop-filter: blur(32px) saturate(180%);
  border-top: 1px solid var(--glass-border);
  box-shadow: 0 -8px 48px rgba(0, 0, 0, 0.3);
}

.gd-footer-inner {
  max-width: 1600px;
  margin: 0 auto;
  padding: 80px 60px 40px;
}

.gd-footer-top {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 60px;
  margin-bottom: 48px;
}

.gd-footer-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 22px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 16px;
}

.gd-footer-brand-mark {
  width: 32px;
  height: 32px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 800;
  color: #fff;
  box-shadow: 0 4px 16px rgba(99, 179, 237, 0.4);
}

.gd-footer-desc {
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-secondary);
  max-width: 320px;
}

.gd-footer-heading {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 20px;
}

.gd-footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.gd-footer-links a {
  font-size: 14px;
  color: var(--text-secondary);
  transition: all 0.3s var(--ease-smooth);
  position: relative;
}

.gd-footer-links a:hover {
  color: var(--accent-blue);
}

.gd-footer-links a::before {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--accent-blue);
  transition: width 0.3s var(--ease-smooth);
}

.gd-footer-links a:hover::before {
  width: 100%;
}

.gd-footer-bottom {
  border-top: 1px solid var(--glass-border);
  padding-top: 28px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 13px;
  color: var(--text-muted);
}

/* ===== Reveal 动画 ===== */
.gd-reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s var(--ease-smooth), transform 0.8s var(--ease-smooth);
}

.gd-reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ===== 响应式设计 ===== */
@media (max-width: 1400px) {
  .gd-nav-inner { padding: 0 48px; }
  .gd-hero { padding: 48px 48px 0; }
  .gd-section { padding: 40px 48px 0; }
  .gd-divider { padding: 32px 48px 0; }
  .gd-footer-inner { padding: 60px 48px 40px; }
}

@media (max-width: 1200px) {
  .gd-skyline-grid { grid-template-columns: repeat(2, 1fr); }
  .gd-row-scroll { grid-template-columns: repeat(4, 1fr); }
  .gd-footer-top { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 1024px) {
  .gd-nav-links { display: none; }
  .gd-mobile-menu-btn { display: flex; }
  .gd-hero-card-inner { grid-template-columns: 1fr; }
  .gd-hero-card-img { height: 380px; }
  .gd-alternating-row { grid-template-columns: 1fr; }
  .gd-alt-building { flex-direction: column; }
  .gd-alt-building-img { width: 100%; height: 200px; }
}

@media (max-width: 768px) {
  .gd-nav-inner { padding: 0 24px; height: 64px; }
  .gd-hero { padding: 32px 24px 0; }
  .gd-section { padding: 32px 24px 0; }
  .gd-divider { padding: 24px 24px 0; }
  .gd-footer-inner { padding: 40px 24px 32px; }
  .gd-hero-card-img { height: 280px; }
  .gd-hero-card-body { padding: 32px 24px; }
  .gd-skyline-grid { grid-template-columns: 1fr; }
  .gd-building--tall { grid-row: span 1; }
  .gd-row-scroll { grid-template-columns: repeat(2, 1fr); }
  .gd-footer-top { grid-template-columns: 1fr; gap: 32px; }
}

@media (max-width: 480px) {
  .gd-row-scroll { grid-template-columns: 1fr; }
  .gd-footer-bottom { flex-direction: column; gap: 12px; text-align: center; }
}

/* ===== 滚动条样式 ===== */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-deep);
}

::-webkit-scrollbar-thumb {
  background: var(--glass-medium);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--glass-heavy);
}

/* ===== 选中样式 ===== */
::selection {
  background: rgba(99, 179, 237, 0.25);
  color: var(--text-primary);
}

/* ===== 通用链接 ===== */
a {
  color: inherit;
  text-decoration: none;
}

/* ===== 图片通用 ===== */
img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* ===== SVG 箭头图标 ===== */
svg {
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

/* ===== 高级光影效果 ===== */

/* 鼠标跟踪光效 */
.gd-hero-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(
    circle at var(--mouse-x, 50%) var(--mouse-y, 50%),
    rgba(99, 179, 237, 0.15) 0%,
    transparent 50%
  );
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.4s ease;
  z-index: 1;
}

.gd-hero-card:hover::before {
  opacity: 1;
}

/* 卡片边缘折射光效 */
.gd-building::after,
.gd-alt-building::after,
.gd-compact-building::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(
    135deg,
    rgba(255, 255, 255, 0.1) 0%,
    transparent 50%,
    transparent 100%
  );
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.5s ease;
  z-index: 1;
}

.gd-building:hover::after,
.gd-alt-building:hover::after,
.gd-compact-building:hover::after {
  opacity: 1;
}

/* 导航栏光晕效果 */
.gd-nav::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(
    90deg,
    transparent 0%,
    var(--accent-blue) 50%,
    transparent 100%
  );
  opacity: 0.3;
  box-shadow: 0 0 20px var(--accent-blue);
}

/* Hero卡片内部光效 */
.gd-hero-card-body::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    to bottom right,
    rgba(99, 179, 237, 0.05) 0%,
    transparent 60%
  );
  pointer-events: none;
  z-index: 0;
}

/* 按钮悬停光效 */
.gd-hero-card-cta::before {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(
    90deg,
    transparent,
    var(--accent-cyan),
    transparent
  );
  transform: scaleX(0);
  transition: transform 0.4s ease;
}

.gd-hero-card:hover .gd-hero-card-cta::before {
  transform: scaleX(1);
}

/* 文字发光效果 */
.gd-hero-card-title {
  text-shadow:
    0 0 20px rgba(99, 179, 237, 0.1),
    0 2px 8px rgba(0, 0, 0, 0.3);
}

.gd-section-title {
  text-shadow:
    0 0 30px rgba(167, 139, 250, 0.1),
    0 2px 8px rgba(0, 0, 0, 0.2);
}

/* 边框高光动画 */
@keyframes gd-border-glow {
  0%, 100% {
    border-color: var(--glass-border);
    box-shadow: 0 0 0 rgba(99, 179, 237, 0);
  }
  50% {
    border-color: var(--glass-border-accent);
    box-shadow: 0 0 20px rgba(99, 179, 237, 0.2);
  }
}

.gd-hero-card-tag {
  animation: gd-border-glow 3s ease-in-out infinite;
}

/* 微光粒子效果 */
@keyframes gd-sparkle {
  0%, 100% {
    opacity: 0;
    transform: scale(0);
  }
  50% {
    opacity: 1;
    transform: scale(1);
  }
}

.gd-logo-mark::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 4px;
  height: 4px;
  background: rgba(255, 255, 255, 0.8);
  border-radius: 50%;
  transform: translate(-50%, -50%) scale(0);
  animation: gd-sparkle 2s ease-in-out infinite;
}

/* 卡片进入动画增强 */
@keyframes gd-card-enter {
  0% {
    opacity: 0;
    transform: translateY(40px) translateZ(-20px);
    filter: blur(4px);
  }
  100% {
    opacity: 1;
    transform: translateY(0) translateZ(0);
    filter: blur(0);
  }
}

.gd-reveal {
  animation: gd-card-enter 0.8s cubic-bezier(0.23, 1, 0.32, 1) forwards;
}

/* 玻璃质感叠加 */
.gd-nav::before,
.gd-footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(
    to bottom,
    rgba(255, 255, 255, 0.02) 0%,
    transparent 100%
  );
  pointer-events: none;
  z-index: -1;
}

/* 鼠标悬停时的3D倾斜效果（可选，性能优化） */
@media (min-width: 1200px) and (hover: hover) {
  .gd-hero-card {
    transform-style: preserve-3d;
    perspective: 1000px;
  }

  .gd-hero-card:hover {
    transform: perspective(1000px) rotateX(2deg) rotateY(-2deg) translateZ(20px);
  }
}

/* ===== 详情页样式 — 使用 gd- 前缀 ===== */

/* 详情页容器 */
.gd-detail {
  position: relative;
  z-index: 10;
  max-width: 1000px;
  margin: 0 auto;
  padding: 40px 60px 60px;
}

/* 返回按钮容器 */
.gd-detail-back {
  margin-bottom: 32px;
}

/* 返回链接 */
.gd-back-link {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 1.2px;
  text-transform: uppercase;
  color: var(--text-secondary);
  padding: 12px 20px;
  border-radius: var(--radius-sm);
  background: var(--glass-light);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--glass-border);
  transition: all 0.3s var(--ease-smooth);
}

.gd-back-link:hover {
  background: var(--glass-medium);
  border-color: var(--glass-border-hover);
  color: var(--accent-blue);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
}

.gd-back-link svg {
  width: 16px;
  height: 16px;
  transition: transform 0.3s var(--ease-smooth);
}

.gd-back-link:hover svg {
  transform: translateX(-4px);
}

/* 详情页主图 */
.gd-detail-hero-img {
  width: 100%;
  height: auto;
  max-height: 520px;
  object-fit: cover;
  border-radius: var(--radius-lg);
  margin-bottom: 32px;
  box-shadow: var(--shadow-glass-3);
  border: 1px solid var(--glass-border);
}

/* 详情页标签 */
.gd-detail-tag {
  display: inline-block;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  padding: 8px 16px;
  border-radius: 20px;
  background: var(--glass-accent);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  color: var(--accent-blue);
  margin-bottom: 20px;
  border: 1px solid var(--glass-border-accent);
  box-shadow: 0 2px 12px rgba(99, 179, 237, 0.2);
}

/* 详情页标题 */
.gd-detail-title {
  font-size: clamp(32px, 5vw, 52px);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.5px;
  color: var(--text-primary);
  margin-bottom: 32px;
  text-shadow:
    0 0 20px rgba(99, 179, 237, 0.1),
    0 2px 8px rgba(0, 0, 0, 0.3);
}

/* 文章主体 */
.gd-detail-body {
  background: var(--glass-medium);
  backdrop-filter: blur(24px) saturate(180%);
  -webkit-backdrop-filter: blur(24px) saturate(180%);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: 40px;
  margin-bottom: 48px;
  box-shadow: var(--shadow-glass-2);
  position: relative;
  overflow: hidden;
}

.gd-detail-body::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg,
    var(--accent-blue),
    var(--accent-purple),
    var(--accent-cyan));
  opacity: 0.6;
  box-shadow: 0 0 20px var(--accent-blue);
}

.gd-detail-body p {
  font-size: 16px;
  line-height: 1.8;
  color: var(--text-secondary);
  margin-bottom: 24px;
}

.gd-detail-body p:last-child {
  margin-bottom: 0;
}

/* 媒体区域 */
.gd-detail-media {
  margin: 32px 0;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-glass-2);
}

.gd-detail-media img,
.gd-detail-media video {
  width: 100%;
  display: block;
}

/* 相关文章容器 */
.gd-related {
  margin-top: 60px;
  padding-top: 40px;
  border-top: 1px solid var(--glass-border);
}

/* 相关文章标题 */
.gd-related-title {
  font-size: clamp(24px, 3vw, 32px);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 28px;
  letter-spacing: -0.5px;
}

/* 相关文章网格 */
.gd-related-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

/* 相关文章卡片 */
.gd-related-card {
  position: relative;
  display: flex;
  flex-direction: column;
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--glass-medium);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border: 1px solid var(--glass-border);
  box-shadow: var(--shadow-glass-1);
  transition: all 0.4s var(--ease-smooth);
  transform: translateZ(0);
  text-decoration: none;
  color: inherit;
}

.gd-related-card:hover {
  transform: translateY(-6px) translateZ(8px);
  box-shadow:
    var(--shadow-glass-2),
    0 12px 32px rgba(99, 179, 237, 0.1);
  border-color: var(--glass-border-hover);
}

/* 相关文章卡片图片 */
.gd-related-card-img {
  position: relative;
  width: 100%;
  aspect-ratio: 16/9;
  overflow: hidden;
}

.gd-related-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s var(--ease-smooth);
}

.gd-related-card:hover .gd-related-card-img img {
  transform: scale(1.05);
}

.gd-related-card-img::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, transparent 60%, rgba(10, 13, 20, 0.3) 100%);
  pointer-events: none;
}

/* 相关文章卡片标题 */
.gd-related-card-title {
  padding: 18px 20px;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.4;
  color: var(--text-primary);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ===== 详情页响应式设计 ===== */
@media (max-width: 1400px) {
  .gd-detail {
    padding: 32px 48px 48px;
  }
}

@media (max-width: 768px) {
  .gd-detail {
    padding: 24px 24px 40px;
  }

  .gd-detail-hero-img {
    max-height: 320px;
    border-radius: var(--radius-md);
  }

  .gd-detail-body {
    padding: 24px;
  }

  .gd-related-grid {
    grid-template-columns: 1fr;
  }

  .gd-back-link {
    padding: 10px 16px;
    font-size: 12px;
  }
}

@media (max-width: 480px) {
  .gd-detail {
    padding: 20px 16px 32px;
  }

  .gd-detail-body {
    padding: 20px;
  }

  .gd-detail-body p {
    font-size: 15px;
  }
}