/* ================================================
   江南風官网 · 全局样式 v2
   风格：深空黑 + 量子蓝 + 毛玻璃 + 粒子光效 + 动效
   ================================================ */

/* ---------- CSS变量 ---------- */
:root {
  --bg-deep: #060b14;
  --bg-primary: #0a0f1e;
  --bg-secondary: #080c14;
  --color-main: #00d4ff;
  --color-main-glow: rgba(0, 212, 255, 0.5);
  --color-secondary: #0077cc;
  --color-accent: #8b5cf6;
  --color-accent-glow: rgba(139, 92, 246, 0.5);
  --color-text: #c8d4e8;
  --color-text-bright: #e8eef8;
  --color-text-dim: #7e90a8;
  --color-text-muted: #96aac8;
  --border-glass: rgba(0, 212, 255, 0.1);
  --border-glass-hover: rgba(0, 212, 255, 0.25);
  --card-bg: rgba(255, 255, 255, 0.025);
  --card-bg-hover: rgba(0, 212, 255, 0.06);
  --radius-lg: 24px;
  --radius: 20px;
  --radius-sm: 12px;
  --shadow-glow: 0 0 30px rgba(0, 212, 255, 0.12);
  --shadow-glow-strong: 0 0 50px rgba(0, 212, 255, 0.2);
  --font-base: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", sans-serif;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ---------- 通用重置 ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
  font-family: var(--font-base);
  background: var(--bg-deep);
  color: var(--color-text);
  font-size: 16px;
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* ---------- 星空粒子背景 ---------- */
.stars-layer {
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

.star {
  position: absolute;
  background: #fff;
  border-radius: 50%;
  animation: starPulse 3s ease-in-out infinite;
}

@keyframes starPulse {
  0%, 100% { opacity: 0.2; }
  50% { opacity: 0.8; }
}

/* ---------- 科技网格背景 ---------- */
.grid-bg {
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  pointer-events: none;
  z-index: 0;
  opacity: 0.03;
  background-image:
    linear-gradient(rgba(0, 212, 255, 0.3) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 212, 255, 0.3) 1px, transparent 1px);
  background-size: 60px 60px;
}

/* ---------- 流星线装饰 ---------- */
.meteor-wrap {
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  pointer-events: none;
  overflow: hidden;
  z-index: 0;
}

@keyframes meteor {
  0%   { transform: translateY(-100%) rotate(35deg); opacity: 0; }
  10%  { opacity: 0.6; }
  100% { transform: translateY(200vh) rotate(35deg); opacity: 0; }
}

.meteor {
  position: absolute;
  width: 1.5px;
  height: 120px;
  background: linear-gradient(to bottom, transparent, var(--color-main), transparent);
  animation: meteor linear infinite;
  opacity: 0;
  border-radius: 1px;
}

.meteor:nth-child(1) { left: 8%;  top: -10%; animation-duration: 20s; animation-delay: 0s; }
.meteor:nth-child(2) { left: 28%; top: -10%; animation-duration: 24s; animation-delay: 5s; }
.meteor:nth-child(3) { left: 52%; top: -10%; animation-duration: 18s; animation-delay: 9s; }
.meteor:nth-child(4) { left: 72%; top: -10%; animation-duration: 22s; animation-delay: 3s; }
.meteor:nth-child(5) { left: 88%; top: -10%; animation-duration: 26s; animation-delay: 7s; }

/* ---------- 布局容器 ---------- */
.container {
  position: relative;
  z-index: 1;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 40px;
}

/* ---------- 滚动渐现动画 ---------- */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- 导航栏 ---------- */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(6, 11, 20, 0.8);
  backdrop-filter: blur(24px) saturate(180%);
  -webkit-backdrop-filter: blur(24px) saturate(180%);
  border-bottom: 1px solid transparent;
  transition: all var(--transition);
}

.nav.scrolled {
  background: rgba(6, 11, 20, 0.95);
  border-bottom-color: rgba(0, 212, 255, 0.08);
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
}

.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 40px;
  height: 68px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}

.nav-logo img {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  border: 1.5px solid rgba(0, 212, 255, 0.3);
  transition: box-shadow var(--transition);
}

.nav-logo:hover img {
  box-shadow: 0 0 16px rgba(0, 212, 255, 0.3);
}

.nav-logo-text {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-text-bright);
  letter-spacing: 3px;
  background: linear-gradient(135deg, var(--color-text-bright), var(--color-main));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
  list-style: none;
}

.nav-links a {
  display: block;
  padding: 8px 16px;
  color: var(--color-text-dim);
  text-decoration: none;
  font-size: 13.5px;
  border-radius: 8px;
  transition: all var(--transition);
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: 4px;
  left: 50%;
  transform: translateX(-50%) scaleX(0);
  width: 20px;
  height: 2px;
  background: var(--color-main);
  border-radius: 1px;
  transition: transform var(--transition);
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--color-main);
  background: rgba(0, 212, 255, 0.06);
}

.nav-links a:hover::after,
.nav-links a.active::after {
  transform: translateX(-50%) scaleX(1);
}

.nav-links a.active {
  font-weight: 600;
}

/* ---------- 导航下拉菜单 ---------- */
.nav-dropdown { position: relative; }
.nav-dropdown-menu {
  display: none;
  position: absolute;
  top: 100%;
  right: 0;
  min-width: 170px;
  background: rgba(10, 15, 30, 0.98);
  backdrop-filter: blur(24px);
  border: 1px solid rgba(0, 212, 255, 0.12);
  border-radius: var(--radius-sm);
  padding: 8px 0;
  list-style: none;
  z-index: 200;
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.4);
}
.nav-dropdown:hover .nav-dropdown-menu { display: block; }
.nav-dropdown-menu a {
  display: block;
  padding: 10px 20px;
  color: var(--color-text-dim);
  font-size: 13px;
  white-space: nowrap;
  border-radius: 0;
}
.nav-dropdown-menu a:hover {
  color: var(--color-main);
  background: rgba(0, 212, 255, 0.06);
}

/* ---------- Hero 区域 ---------- */
.hero-banner {
  position: relative;
  width: 100%;
  height: 100vh;
  min-height: 620px;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 20%;
  filter: brightness(0.6) saturate(0.8);
  transform: scale(1.05);
  animation: heroZoom 20s ease-in-out infinite alternate;
}

@keyframes heroZoom {
  0% { transform: scale(1.05); }
  100% { transform: scale(1.12); }
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 50% 80%, rgba(0, 212, 255, 0.08) 0%, transparent 50%),
    linear-gradient(to top, var(--bg-deep) 0%, rgba(6, 11, 20, 0.4) 30%, transparent 100%);
}

.hero-content {
  position: absolute;
  bottom: 0;
  left: 0; right: 0;
  padding: 0 40px 100px;
  text-align: center;
  z-index: 2;
}

.hero-title {
  display: block;
  font-size: 56px;
  font-weight: 900;
  color: var(--color-text-bright);
  letter-spacing: 10px;
  margin-bottom: 20px;
  text-shadow: 0 0 60px rgba(0, 212, 255, 0.3);
  animation: heroFadeIn 1.2s ease-out;
}

@keyframes heroFadeIn {
  0% { opacity: 0; transform: translateY(30px); }
  100% { opacity: 1; transform: translateY(0); }
}

.hero-subtitle {
  display: block;
  font-size: 20px;
  color: var(--color-main);
  letter-spacing: 8px;
  margin-bottom: 48px;
  text-shadow: 0 0 20px var(--color-main-glow);
  animation: heroFadeIn 1.2s 0.2s ease-out both;
}

.hero-btns {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  animation: heroFadeIn 1.2s 0.4s ease-out both;
}

.hero-btn-outline {
  padding: 14px 36px;
  border: 1px solid var(--color-main);
  color: var(--color-main);
  border-radius: 50px;
  font-size: 15px;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
  letter-spacing: 2px;
  backdrop-filter: blur(4px);
}

.hero-btn-outline:hover {
  background: rgba(0, 212, 255, 0.1);
  box-shadow: 0 0 30px rgba(0, 212, 255, 0.25), inset 0 0 30px rgba(0, 212, 255, 0.05);
  transform: translateY(-2px);
}

.hero-btn-primary {
  padding: 14px 36px;
  background: linear-gradient(135deg, var(--color-accent), #7c3aed);
  color: #fff;
  border-radius: 50px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
  letter-spacing: 2px;
  border: none;
}

.hero-btn-primary:hover {
  box-shadow: 0 0 40px var(--color-accent-glow);
  transform: translateY(-2px);
}

/* ---------- 粒子光线带 ---------- */
.hero-scanline {
  position: absolute;
  left: 0; right: 0;
  height: 1px;
  background: linear-gradient(to right, transparent, rgba(0, 212, 255, 0.15), transparent);
  animation: scanDown 8s linear infinite;
  pointer-events: none;
}

@keyframes scanDown {
  0% { top: -1px; }
  100% { top: 100%; }
}

/* ---------- 统计数据栏 ---------- */
.stats-bar {
  position: relative;
  z-index: 2;
  background: rgba(255, 255, 255, 0.02);
  border-top: 1px solid rgba(0, 212, 255, 0.06);
  border-bottom: 1px solid rgba(0, 212, 255, 0.06);
  backdrop-filter: blur(12px);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  padding: 28px 40px;
}

.stat-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  padding: 0 56px;
}

.stat-num {
  font-size: 40px;
  font-weight: 900;
  color: var(--color-main);
  text-shadow: 0 0 24px var(--color-main-glow);
  line-height: 1;
  letter-spacing: -1px;
}

.stat-ai {
  font-size: 32px;
  font-weight: 900;
  background: linear-gradient(135deg, var(--color-main), var(--color-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-shadow: none;
  filter: drop-shadow(0 0 16px var(--color-main-glow));
  line-height: 1;
}

.stat-label {
  font-size: 13px;
  color: var(--color-text-dim);
  letter-spacing: 3px;
  text-transform: uppercase;
}

.stat-divider {
  width: 1px;
  height: 44px;
  background: linear-gradient(to bottom, transparent, rgba(0, 212, 255, 0.15), transparent);
}

/* ---------- 通用 Section 标题 ---------- */
.section-title {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 24px;
  padding: 72px 40px 36px;
}

.section-title-text {
  font-size: 22px;
  font-weight: 700;
  color: var(--color-text-bright);
  letter-spacing: 5px;
  white-space: nowrap;
  position: relative;
}

.section-title-text::before {
  content: '';
  position: absolute;
  bottom: -8px;
  left: 50%;
  transform: translateX(-50%);
  width: 32px;
  height: 3px;
  background: var(--color-main);
  border-radius: 2px;
  box-shadow: 0 0 8px var(--color-main-glow);
}

.section-line {
  flex: 1;
  height: 1px;
  background: linear-gradient(to right, transparent, rgba(0, 212, 255, 0.1), transparent);
}

.section-blue-line {
  display: inline-block;
  width: 4px;
  height: 26px;
  background: linear-gradient(180deg, var(--color-main), var(--color-accent));
  border-radius: 2px;
  flex-shrink: 0;
  box-shadow: 0 0 10px var(--color-main-glow);
}

.section-title-left {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 48px 40px 24px;
}
.section-title-left .section-title-text {
  font-size: 20px;
  letter-spacing: 4px;
}

/* ---------- 核心服务 ---------- */
.service-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  padding: 0 40px 48px;
}

.service-card {
  background: var(--card-bg);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 36px 20px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
  text-align: center;
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
  color: inherit;
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0; left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 1px;
  background: var(--color-main);
  transition: width var(--transition);
}

.service-card:hover::before {
  width: 60%;
}

.service-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-glass-hover);
  box-shadow: var(--shadow-glow);
  background: var(--card-bg-hover);
}

.service-icon {
  font-size: 42px;
  line-height: 1;
  transition: transform var(--transition);
}

.service-card:hover .service-icon {
  transform: scale(1.1);
}

.service-name {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-text-bright);
  letter-spacing: 1px;
}

/* 原子图标 */
.atom-icon {
  width: 42px;
  height: 42px;
  position: relative;
}

.atom-core {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  width: 12px;
  height: 12px;
  background: var(--color-main);
  border-radius: 50%;
  box-shadow: 0 0 12px var(--color-main-glow);
  animation: corePulse 2s ease-in-out infinite;
}

@keyframes corePulse {
  0%, 100% { box-shadow: 0 0 8px var(--color-main-glow); }
  50% { box-shadow: 0 0 20px var(--color-main-glow), 0 0 40px rgba(0, 212, 255, 0.2); }
}

.atom-orbit {
  position: absolute;
  top: 50%; left: 50%;
  border: 1px solid rgba(0, 212, 255, 0.2);
  border-radius: 50%;
  transform: translate(-50%, -50%);
}

.atom-orbit-1 { width: 24px; height: 24px; animation: orbitSpin 4s linear infinite; }
.atom-orbit-2 { width: 34px; height: 34px; animation: orbitSpin 6s linear infinite reverse; }
.atom-orbit-3 { width: 42px; height: 42px; animation: orbitSpin 8s linear infinite; }

@keyframes orbitSpin {
  0% { transform: translate(-50%, -50%) rotate(0deg); }
  100% { transform: translate(-50%, -50%) rotate(360deg); }
}

/* ---------- 宇宙横幅 ---------- */
.galaxy-banner {
  position: relative;
  height: 320px;
  overflow: hidden;
  margin: 0 40px 24px;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(0, 212, 255, 0.06);
}

.galaxy-bg {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: brightness(0.45) saturate(0.6);
  transition: transform var(--transition);
}

.galaxy-banner:hover .galaxy-bg { transform: scale(1.03); }

.galaxy-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(0, 212, 255, 0.08), rgba(139, 92, 246, 0.08));
}

.galaxy-content {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 20px;
}

.galaxy-title {
  font-size: 28px;
  font-weight: 700;
  color: var(--color-text-bright);
  letter-spacing: 6px;
  text-shadow: 0 0 30px rgba(0, 212, 255, 0.2);
}

.galaxy-link {
  font-size: 14px;
  color: var(--color-main);
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
  padding: 8px 24px;
  border: 1px solid rgba(0, 212, 255, 0.2);
  border-radius: 50px;
  letter-spacing: 2px;
}

.galaxy-link:hover {
  background: rgba(0, 212, 255, 0.08);
  box-shadow: 0 0 20px rgba(0, 212, 255, 0.15);
}

/* ---------- VR案例 / 视频作品 ---------- */
.vr-grid,
.video-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  padding: 0 40px 20px;
}

.vr-item,
.video-item {
  display: flex;
  flex-direction: column;
  gap: 12px;
  cursor: pointer;
}

.vr-card,
.video-card {
  position: relative;
  height: 220px;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border-glass);
  transition: all var(--transition);
}

.vr-item:hover .vr-card,
.video-item:hover .video-card {
  border-color: var(--border-glass-hover);
  box-shadow: var(--shadow-glow);
}

.vr-cover,
.video-cover {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.vr-item:hover .vr-cover,
.video-item:hover .video-cover {
  transform: scale(1.08);
}

.vr-mask,
.video-mask {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(6, 11, 20, 0.8) 0%, transparent 60%);
}

.vr-tag,
.video-tag {
  position: absolute;
  top: 12px;
  left: 12px;
  padding: 5px 14px;
  border-radius: 6px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 2px;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(0, 212, 255, 0.2);
  color: var(--color-main);
}

.vr-tag.national { color: #fbbf24; border-color: rgba(251, 191, 36, 0.3); }
.vr-tag.provincial { color: #a78bfa; border-color: rgba(167, 139, 250, 0.3); }
.vr-tag.local { color: var(--color-main); }

.vr-title,
.video-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-text-bright);
  line-height: 1.4;
}

.vr-desc,
.video-desc {
  font-size: 13px;
  color: var(--color-text-dim);
  line-height: 1.5;
}

.view-all {
  text-align: center;
  padding: 24px 40px;
  font-size: 14px;
  color: var(--color-main);
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
  display: block;
  letter-spacing: 2px;
}
.view-all:hover { opacity: 0.7; text-shadow: 0 0 12px var(--color-main-glow); }

/* ---------- AI数字赋能 ---------- */
.ai-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  padding: 0 40px 48px;
}

.ai-item {
  background: var(--card-bg);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 32px 20px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  text-align: center;
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
  position: relative;
  overflow: hidden;
}

.ai-item::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 50% 0%, rgba(0, 212, 255, 0.06), transparent);
  opacity: 0;
  transition: opacity var(--transition);
}

.ai-item:hover::after { opacity: 1; }
.ai-item:hover {
  transform: translateY(-3px);
  border-color: var(--border-glass-hover);
  box-shadow: var(--shadow-glow);
}

.ai-icon { font-size: 36px; transition: transform var(--transition); }
.ai-item:hover .ai-icon { transform: scale(1.15); }
.ai-name { font-size: 14px; color: var(--color-text-bright); font-weight: 600; }

.ai-service-desc {
  font-size: 12px;
  color: var(--color-text-dim);
  margin-top: 4px;
}

/* ---------- APP开发 ---------- */
.dev-banner {
  background: linear-gradient(135deg, rgba(139, 92, 246, 0.12), rgba(124, 58, 237, 0.06));
  border: 1px solid rgba(139, 92, 246, 0.15);
  border-radius: var(--radius-lg);
  margin: 0 40px 24px;
  padding: 36px;
  text-align: center;
  cursor: pointer;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.dev-banner::before {
  content: '';
  position: absolute;
  top: 0; left: 50%;
  transform: translateX(-50%);
  width: 200px;
  height: 1px;
  background: linear-gradient(to right, transparent, rgba(139, 92, 246, 0.3), transparent);
}

.dev-banner:hover {
  border-color: rgba(139, 92, 246, 0.35);
  box-shadow: 0 0 40px rgba(139, 92, 246, 0.1);
}

.dev-headline {
  display: block;
  font-size: 22px;
  font-weight: 700;
  color: var(--color-text-bright);
  margin-bottom: 10px;
}

.dev-sub {
  font-size: 14px;
  color: var(--color-text-dim);
}

.dev-cards {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 12px;
  padding: 0 40px 28px;
}

.dev-card {
  background: var(--card-bg);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius);
  padding: 28px 16px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  text-align: center;
  transition: all var(--transition);
  cursor: pointer;
}

.dev-card:hover {
  transform: translateY(-3px);
  border-color: var(--border-glass-hover);
  box-shadow: var(--shadow-glow);
}

.dev-card-icon { font-size: 30px; }
.dev-card-title { font-size: 13px; font-weight: 600; color: var(--color-text-bright); }
.dev-card-desc { font-size: 11px; color: var(--color-text-dim); line-height: 1.5; }

.dev-desc { padding: 0 40px 24px; }
.dev-section-header {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 24px;
}
.dev-line { flex: 1; height: 1px; background: linear-gradient(to right, transparent, rgba(0, 212, 255, 0.1), transparent); }
.dev-section-title { font-size: 14px; color: var(--color-text-dim); letter-spacing: 3px; white-space: nowrap; }

.dev-desc-item { margin-bottom: 16px; padding-left: 4px; }
.dev-desc-title {
  display: block;
  font-size: 14px;
  color: var(--color-main);
  margin-bottom: 6px;
  font-weight: 600;
}
.dev-desc-text {
  font-size: 13px;
  color: var(--color-text-dim);
  line-height: 1.7;
}

.dev-cta {
  text-align: center;
  padding: 16px;
  margin: 0 40px 36px;
  background: linear-gradient(135deg, var(--color-accent), #7c3aed);
  color: #fff;
  border-radius: 50px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  letter-spacing: 2px;
}

.dev-cta:hover {
  box-shadow: 0 0 40px var(--color-accent-glow);
  transform: translateY(-2px);
}

.dev-flow { padding: 0 40px 64px; }
.dev-flow-steps {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
}
.dev-step {
  padding: 10px 24px;
  background: var(--card-bg);
  border: 1px solid var(--border-glass);
  border-radius: 50px;
  font-size: 13px;
  color: var(--color-text);
  transition: all var(--transition);
}
.dev-step:hover {
  border-color: var(--color-main);
  box-shadow: 0 0 16px rgba(0, 212, 255, 0.1);
}
.dev-arrow { color: var(--color-main); font-size: 18px; opacity: 0.6; }

/* ---------- 最新动态 ---------- */
.article-list {
  padding: 0 40px 64px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.article-item {
  display: flex;
  align-items: center;
  gap: 18px;
  background: var(--card-bg);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius);
  padding: 22px 28px;
  cursor: pointer;
  transition: all var(--transition);
}
.article-item:hover {
  border-color: var(--border-glass-hover);
  transform: translateX(6px);
  box-shadow: 0 0 24px rgba(0, 212, 255, 0.08);
}

.article-icon-wrap {
  width: 48px;
  height: 48px;
  background: rgba(0, 212, 255, 0.06);
  border: 1px solid rgba(0, 212, 255, 0.12);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: all var(--transition);
}
.article-item:hover .article-icon-wrap {
  background: rgba(0, 212, 255, 0.1);
  box-shadow: 0 0 16px rgba(0, 212, 255, 0.1);
}

.article-emoji { font-size: 24px; }
.article-info { flex: 1; }

.article-title {
  display: block;
  font-size: 15px;
  font-weight: 600;
  color: var(--color-text-bright);
  margin-bottom: 6px;
}
.article-desc {
  display: block;
  font-size: 13px;
  color: var(--color-text-dim);
  margin-bottom: 6px;
}
.article-date { font-size: 12px; color: var(--color-text-dim); opacity: 0.7; }

/* ---------- 底部 ---------- */
.bottom-brand {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 40px 40px;
  border-top: 1px solid rgba(0, 212, 255, 0.06);
  margin-top: 20px;
}
.brand-line {
  flex: 1;
  height: 1px;
  background: linear-gradient(to right, transparent, rgba(0, 212, 255, 0.08), transparent);
}
.brand-text {
  font-size: 12px;
  color: var(--color-text-dim);
  letter-spacing: 3px;
  opacity: 0.5;
  white-space: nowrap;
}

.bottom-safe { height: 80px; }

/* ---------- 页面Hero（子页面） ---------- */
.page-hero {
  position: relative;
  height: 440px;
  overflow: hidden;
}
.page-hero-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 20%;
  filter: brightness(0.6);
}
.page-hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, var(--bg-primary) 0%, transparent 100%);
}
.page-hero-content {
  position: absolute;
  bottom: 0;
  left: 0; right: 0;
  padding: 0 40px 56px;
  text-align: center;
}
.page-hero-icon { font-size: 44px; margin-bottom: 14px; }
.page-hero-title {
  display: block;
  font-size: 40px;
  font-weight: 800;
  color: var(--color-text-bright);
  letter-spacing: 8px;
  margin-bottom: 12px;
  text-shadow: 0 0 30px rgba(0, 212, 255, 0.2);
}
.page-hero-sub {
  display: block;
  font-size: 15px;
  color: var(--color-main);
  letter-spacing: 4px;
  text-shadow: 0 0 12px var(--color-main-glow);
}
.page-hero-sub2 {
  display: block;
  font-size: 13px;
  color: var(--color-text-dim);
  letter-spacing: 4px;
  margin-top: 8px;
}

/* ---------- 筛选标签 ---------- */
.filter-bar {
  display: flex;
  gap: 8px;
  padding: 24px 40px;
  flex-wrap: wrap;
}
.filter-tag {
  padding: 8px 20px;
  border-radius: 50px;
  font-size: 13px;
  background: var(--card-bg);
  border: 1px solid var(--border-glass);
  color: var(--color-text-dim);
  cursor: pointer;
  transition: all var(--transition);
  letter-spacing: 1px;
}
.filter-tag.active,
.filter-tag:hover {
  background: rgba(0, 212, 255, 0.1);
  border-color: var(--border-glass-hover);
  color: var(--color-main);
  box-shadow: 0 0 16px rgba(0, 212, 255, 0.1);
}

/* ---------- 联系我们 ---------- */
.contact-cards {
  padding: 0 40px 48px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.contact-card {
  background: var(--card-bg);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
  text-align: center;
  cursor: pointer;
  transition: all var(--transition);
}
.contact-card:hover {
  border-color: var(--border-glass-hover);
  box-shadow: var(--shadow-glow);
  transform: translateY(-2px);
}
.contact-icon { font-size: 36px; }
.contact-label { display: block; font-size: 12px; color: var(--color-text-dim); margin-bottom: 6px; letter-spacing: 2px; }
.contact-value { display: block; font-size: 17px; font-weight: 600; color: var(--color-text-bright); }
.contact-action {
  font-size: 13px;
  color: var(--color-main);
  background: rgba(0, 212, 255, 0.06);
  border: 1px solid rgba(0, 212, 255, 0.15);
  padding: 8px 22px;
  border-radius: 50px;
  cursor: pointer;
  transition: all var(--transition);
}
.contact-action:hover { background: rgba(0, 212, 255, 0.1); }

/* ---------- 关于我们 ---------- */
.about-text-card {
  margin: 0 40px 24px;
  padding: 36px;
  background: var(--card-bg);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  display: flex;
  flex-direction: column;
  gap: 18px;
}
.about-item { display: flex; align-items: flex-start; gap: 12px; }
.about-bullet { font-size: 14px; color: var(--color-main); flex-shrink: 0; line-height: 1.8; }
.about-para { font-size: 14px; color: var(--color-text-muted); line-height: 1.8; }

.works-list { display: flex; flex-direction: column; gap: 16px; padding: 0 40px 48px; }
.work-card {
  background: var(--card-bg);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  overflow: hidden;
  cursor: pointer;
  transition: all var(--transition);
  display: flex;
}
.work-card:hover {
  transform: translateY(-3px);
  border-color: var(--border-glass-hover);
  box-shadow: var(--shadow-glow);
}
.work-cover-wrap {
  position: relative;
  width: 260px;
  height: 170px;
  flex-shrink: 0;
}
.work-cover { width: 100%; height: 100%; object-fit: cover; }
.work-cover-overlay {
  position: absolute;
  top: 12px; left: 12px;
  background: rgba(0,0,0,0.5);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(0,212,255,0.2);
  padding: 5px 16px;
  border-radius: 6px;
}
.work-type { font-size: 12px; color: var(--color-main); letter-spacing: 1px; }
.work-info { flex: 1; padding: 28px 32px; display: flex; flex-direction: column; justify-content: center; gap: 10px; }
.work-title { display: block; font-size: 18px; font-weight: 700; color: var(--color-text-bright); }
.work-desc { display: block; font-size: 14px; color: var(--color-text-dim); line-height: 1.7; }

/* ---------- 视频播放器弹窗 ---------- */
.video-modal {
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  background: rgba(0, 0, 0, 0.92);
  backdrop-filter: blur(8px);
  z-index: 10000;
  display: flex;
  align-items: center;
  justify-content: center;
}
.video-modal-content {
  position: relative;
  width: 92%;
  max-width: 960px;
  aspect-ratio: 16/9;
  background: #000;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 0 60px rgba(0, 212, 255, 0.2);
  border: 1px solid rgba(0, 212, 255, 0.1);
}
.video-modal-content iframe { width: 100%; height: 100%; }
.video-modal-close {
  position: absolute;
  top: -44px; right: 4px;
  font-size: 36px;
  color: #fff;
  cursor: pointer;
  opacity: 0.7;
  transition: opacity var(--transition);
}
.video-modal-close:hover { opacity: 1; }

/* ---------- AI / 关于我们 Hero 特殊样式 ---------- */
.ai-hero-bg-gradient {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 50% 80%, rgba(0, 212, 255, 0.12) 0%, transparent 60%);
}
.ai-hero-atom { width: 64px; height: 64px; margin: 0 auto; }
.atom-core-lg { width: 16px; height: 16px; }
.about-hero {
  position: relative;
  width: 100%;
  padding: 180px 40px 100px;
  text-align: center;
  overflow: hidden;
}
.about-hero-logo {
  width: 100px; height: 100px;
  border-radius: 50%;
  border: 2px solid rgba(0, 212, 255, 0.2);
  margin-bottom: 24px;
  background: #fff;
  box-shadow: 0 0 40px rgba(0, 212, 255, 0.1);
}
.about-hero-title { display: block; font-size: 40px; font-weight: 800; color: var(--color-text-bright); letter-spacing: 8px; }
.about-hero-sub { display: block; font-size: 18px; color: var(--color-main); letter-spacing: 5px; margin-top: 14px; }
.about-hero-tags { display: block; font-size: 13px; color: var(--color-text-dim); letter-spacing: 3px; margin-top: 12px; }

/* ---------- 全宽样式 ---------- */
.vr-grid-full,
.video-grid-full { grid-template-columns: repeat(3, 1fr); padding: 0 40px 48px; }
.ai-grid-full { padding: 0 0 48px; grid-template-columns: repeat(4, 1fr); }
.dev-cards-no-padding { padding: 0 0 24px; }
.dev-cta-no-margin { margin: 0 0 64px; }
.service-grid-tight { padding: 0 0 24px; }

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
  .service-grid { grid-template-columns: repeat(2, 1fr); }
  .vr-grid, .video-grid, .vr-grid-full, .video-grid-full { grid-template-columns: repeat(2, 1fr); }
  .ai-grid, .ai-grid-full { grid-template-columns: repeat(2, 1fr); }
  .dev-cards { grid-template-columns: repeat(3, 1fr); }
  .stat-item { padding: 0 32px; }
}

@media (max-width: 768px) {
  .container { padding: 0 20px; }
  .nav-inner { padding: 0 20px; }
  .hero-title { font-size: 32px; letter-spacing: 6px; }
  .hero-subtitle { font-size: 16px; letter-spacing: 5px; }
  .hero-content { padding: 0 20px 60px; }
  .hero-btns { flex-direction: column; gap: 12px; }
  .galaxy-banner { margin: 0 20px 24px; height: 240px; }
  .galaxy-title { font-size: 22px; letter-spacing: 4px; }
  .service-grid, .vr-grid, .video-grid,
  .ai-grid { grid-template-columns: 1fr 1fr; padding: 0 20px 24px; }
  .vr-item:nth-child(n+4) { display: none; }
  .video-item:nth-child(n+4) { display: none; }
  .stats-bar { padding: 24px 20px; gap: 0; }
  .stat-item { padding: 0 20px; }
  .stat-num { font-size: 32px; }
  .dev-cards { grid-template-columns: repeat(2, 1fr); padding: 0 20px 24px; }
  .dev-banner { margin: 0 20px 24px; }
  .section-title { padding: 52px 20px 28px; }
  .section-title-left { padding: 40px 20px 20px; }
  .view-all { padding: 20px 20px; }
  .bottom-brand { padding: 28px 20px; }
  .page-hero { height: 360px; }
  .page-hero-content { padding: 0 20px 44px; }
  .page-hero-title { font-size: 28px; letter-spacing: 5px; }
  .filter-bar { padding: 20px 20px; }
  .article-list { padding: 0 20px 48px; }
  .contact-cards { padding: 0 20px 48px; grid-template-columns: 1fr; }
  .about-text-card { margin: 0 20px 24px; }
  .works-list { padding: 0 20px 48px; }
  .work-card { flex-direction: column; }
  .work-cover-wrap { width: 100%; height: 200px; }
  .work-info { padding: 24px; }
  .nav-links { display: none; }
  .vr-grid-full, .video-grid-full { padding: 0 20px 48px; }
}

@media (max-width: 480px) {
  .service-grid, .vr-grid, .video-grid, .ai-grid,
  .vr-grid-full, .video-grid-full, .ai-grid-full { grid-template-columns: 1fr; }
  .dev-cards { grid-template-columns: repeat(2, 1fr); }
  .stat-item { padding: 0 12px; }
  .stat-num { font-size: 28px; }
  .hero-title { font-size: 28px; }
}