/* ==========================================================================
   慕羽音频 - 全局样式表
   蓝紫渐变 · 科技感 · 高端大气
   ========================================================================== */

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

html {
  scroll-behavior: smooth;
}

/* ---------- 设计变量 ---------- */
:root {
  /* 主色：蓝紫渐变系 */
  --bg-deep: #050816;
  --bg-primary: #0a0e27;
  --bg-secondary: #0f1535;
  --bg-card: rgba(15, 21, 53, 0.6);
  --bg-card-hover: rgba(20, 28, 70, 0.8);

  /* 文字 */
  --text-primary: #f0f4ff;
  --text-secondary: #a8b2d1;
  --text-muted: #6b7494;

  /* 强调色：电蓝 + 紫罗兰 */
  --accent-blue: #3b82f6;
  --accent-purple: #8b5cf6;
  --accent-cyan: #60a5fa;
  --accent-glow: rgba(99, 102, 241, 0.5);

  /* 边框 */
  --border: rgba(99, 102, 241, 0.2);
  --border-hover: rgba(99, 102, 241, 0.5);

  /* 渐变 */
  --gradient-primary: linear-gradient(135deg, #3b82f6 0%, #8b5cf6 100%);
  --gradient-text: linear-gradient(135deg, #60a5fa 0%, #c084fc 100%);
  --gradient-bg: radial-gradient(ellipse at top, #1a1f4e 0%, #0a0e27 50%, #050816 100%);

  /* 阴影 */
  --shadow-glow: 0 0 40px rgba(99, 102, 241, 0.3);
  --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.4);
  --shadow-hover: 0 16px 48px rgba(99, 102, 241, 0.3);

  /* 圆角 */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;

  /* 动画 */
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ---------- 滚动条 ---------- */
::-webkit-scrollbar {
  width: 10px;
}
::-webkit-scrollbar-track {
  background: var(--bg-deep);
}
::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, var(--accent-blue), var(--accent-purple));
  border-radius: 5px;
}

/* ---------- 文字选中 ---------- */
::selection {
  background: var(--accent-purple);
  color: white;
}

/* ---------- Body ---------- */
body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC',
    'Microsoft YaHei', 'Helvetica Neue', sans-serif;
  background: var(--gradient-bg);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  min-height: 100vh;
  position: relative;
}

/* 全局背景粒子层 */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image:
    radial-gradient(2px 2px at 20% 30%, rgba(99, 179, 237, 0.3), transparent),
    radial-gradient(2px 2px at 60% 70%, rgba(168, 85, 247, 0.3), transparent),
    radial-gradient(1px 1px at 50% 50%, rgba(255, 255, 255, 0.2), transparent),
    radial-gradient(1px 1px at 80% 20%, rgba(99, 179, 237, 0.2), transparent),
    radial-gradient(2px 2px at 90% 80%, rgba(168, 85, 247, 0.2), transparent),
    radial-gradient(1px 1px at 33% 15%, rgba(255, 255, 255, 0.15), transparent),
    radial-gradient(1px 1px at 70% 40%, rgba(99, 179, 237, 0.2), transparent);
  background-size: 200% 200%;
  background-repeat: repeat;
  pointer-events: none;
  z-index: 0;
  opacity: 0.6;
  animation: starDrift 60s linear infinite;
}

@keyframes starDrift {
  from { background-position: 0 0; }
  to { background-position: 200% 200%; }
}

/* ---------- 容器 ---------- */
.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
  z-index: 1;
}

/* ==========================================================================
   导航栏
   ========================================================================== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 16px 0;
  background: rgba(5, 8, 22, 0.7);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  transition: var(--transition);
}

.navbar.scrolled {
  padding: 12px 0;
  background: rgba(5, 8, 22, 0.9);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.nav-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--text-primary);
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: 0.5px;
}

.nav-logo .logo-icon {
  width: 40px;
  height: 40px;
  background: var(--gradient-primary);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  font-weight: 900;
  color: white;
  box-shadow: var(--shadow-glow);
  position: relative;
  overflow: hidden;
}

.nav-logo .logo-icon::after {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: linear-gradient(45deg, transparent 40%, rgba(255,255,255,0.3) 50%, transparent 60%);
  animation: shimmer 3s linear infinite;
}

@keyframes shimmer {
  to { transform: translate(50%, 50%); }
}

.nav-logo .brand-text {
  background: var(--gradient-text);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
}

.nav-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
  transition: var(--transition);
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gradient-primary);
  transition: width 0.3s ease;
}

.nav-links a:hover {
  color: var(--text-primary);
}

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

.nav-cta {
  padding: 8px 20px;
  background: var(--gradient-primary);
  border-radius: var(--radius-sm);
  color: white !important;
  font-weight: 600;
  box-shadow: 0 4px 16px rgba(99, 102, 241, 0.4);
}

.nav-cta::after {
  display: none;
}

.nav-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(99, 102, 241, 0.6);
}

/* 移动端菜单按钮 */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 1.5rem;
  cursor: pointer;
}

/* ==========================================================================
   按钮
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  border: none;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.btn-primary {
  background: var(--gradient-primary);
  color: white;
  box-shadow: 0 4px 16px rgba(99, 102, 241, 0.4);
}

.btn-primary::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
  transition: left 0.5s;
}

.btn-primary:hover::before {
  left: 100%;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(99, 102, 241, 0.6);
}

.btn-secondary {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border-hover);
}

.btn-secondary:hover {
  background: var(--bg-card-hover);
  border-color: var(--accent-purple);
  transform: translateY(-2px);
}

.btn-large {
  padding: 16px 36px;
  font-size: 1.05rem;
}

/* ==========================================================================
   Hero 区域
   ========================================================================== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 120px 24px 80px;
  position: relative;
  overflow: hidden;
}

/* 装饰光球 */
.hero::before,
.hero::after {
  content: '';
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.5;
  z-index: 0;
}

.hero::before {
  width: 500px;
  height: 500px;
  background: var(--accent-blue);
  top: -100px;
  left: -100px;
  animation: float 8s ease-in-out infinite;
}

.hero::after {
  width: 400px;
  height: 400px;
  background: var(--accent-purple);
  bottom: -50px;
  right: -50px;
  animation: float 10s ease-in-out infinite reverse;
}

@keyframes float {
  0%, 100% { transform: translate(0, 0); }
  50% { transform: translate(30px, -30px); }
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 900px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 20px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 100px;
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 32px;
  backdrop-filter: blur(10px);
}

.hero-badge .dot {
  width: 8px;
  height: 8px;
  background: #10b981;
  border-radius: 50%;
  box-shadow: 0 0 10px #10b981;
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

.hero h1 {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 24px;
  letter-spacing: -1px;
}

.hero h1 .gradient-text {
  background: var(--gradient-text);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

.hero-subtitle {
  font-size: clamp(1rem, 2vw, 1.25rem);
  color: var(--text-secondary);
  margin-bottom: 40px;
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

.hero-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 60px;
}

/* 数据统计条 */
.hero-stats {
  display: flex;
  gap: 48px;
  justify-content: center;
  flex-wrap: wrap;
  padding: 32px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(20px);
  max-width: 700px;
  margin: 0 auto;
}

.stat-item {
  text-align: center;
}

.stat-value {
  font-size: 2rem;
  font-weight: 800;
  background: var(--gradient-text);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  display: block;
}

.stat-label {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: 4px;
}

/* ==========================================================================
   Section 通用
   ========================================================================== */
section {
  padding: 100px 0;
  position: relative;
  z-index: 1;
}

.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 64px;
}

.section-tag {
  display: inline-block;
  padding: 6px 16px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 100px;
  font-size: 0.8rem;
  color: var(--accent-cyan);
  margin-bottom: 16px;
  font-weight: 600;
  letter-spacing: 1px;
}

.section-title {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  margin-bottom: 16px;
  letter-spacing: -0.5px;
}

.section-title .gradient-text {
  background: var(--gradient-text);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.section-desc {
  font-size: 1.1rem;
  color: var(--text-secondary);
}

/* ==========================================================================
   产品卡片网格
   ========================================================================== */
.products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}

.product-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
  text-decoration: none;
  color: var(--text-primary);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
  backdrop-filter: blur(20px);
  display: flex;
  flex-direction: column;
}

/* 卡片顶部光带 */
.product-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-primary);
  opacity: 0.6;
  transition: var(--transition);
}

.product-card:hover {
  transform: translateY(-8px);
  border-color: var(--border-hover);
  box-shadow: var(--shadow-hover);
  background: var(--bg-card-hover);
}

.product-card:hover::before {
  opacity: 1;
  box-shadow: 0 0 20px var(--accent-glow);
}

/* 即将上线卡片样式（半透明禁用感） */
.product-card.coming-soon {
  opacity: 0.85;
}

.product-card.coming-soon .product-status {
  display: inline-block;
}

.product-status {
  display: none;
  position: absolute;
  top: 20px;
  right: 20px;
  padding: 4px 12px;
  background: rgba(168, 85, 247, 0.2);
  border: 1px solid rgba(168, 85, 247, 0.4);
  border-radius: 100px;
  font-size: 0.7rem;
  color: var(--accent-purple);
  font-weight: 600;
}

.product-icon {
  width: 64px;
  height: 64px;
  background: var(--gradient-primary);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  margin-bottom: 24px;
  box-shadow: 0 8px 24px rgba(99, 102, 241, 0.3);
  position: relative;
}

.product-name {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.product-version {
  font-size: 0.8rem;
  color: var(--accent-cyan);
  margin-bottom: 16px;
  font-weight: 600;
}

.product-desc {
  color: var(--text-secondary);
  font-size: 0.95rem;
  margin-bottom: 24px;
  flex-grow: 1;
}

.product-features {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 24px;
}

.feature-tag {
  padding: 4px 12px;
  background: rgba(99, 102, 241, 0.1);
  border: 1px solid var(--border);
  border-radius: 100px;
  font-size: 0.75rem;
  color: var(--text-secondary);
}

.product-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--accent-cyan);
  font-size: 0.9rem;
  font-weight: 600;
  transition: var(--transition);
}

.product-card:hover .product-link {
  gap: 10px;
  color: var(--accent-purple);
}

/* ==========================================================================
   关于/联系区域
   ========================================================================== */
.about-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.about-text h3 {
  font-size: 1.75rem;
  font-weight: 700;
  margin-bottom: 20px;
}

.about-text p {
  color: var(--text-secondary);
  margin-bottom: 16px;
  font-size: 1rem;
}

.about-features {
  list-style: none;
}

.about-features li {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 0;
  color: var(--text-secondary);
}

.about-features li::before {
  content: '✓';
  width: 24px;
  height: 24px;
  background: var(--gradient-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 0.8rem;
  font-weight: 700;
  flex-shrink: 0;
}

.about-visual {
  position: relative;
  aspect-ratio: 1;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  backdrop-filter: blur(20px);
}

.about-visual .glow-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(40px);
  opacity: 0.6;
}

.about-visual .glow-orb:nth-child(1) {
  width: 60%;
  height: 60%;
  background: var(--accent-blue);
  top: 10%;
  left: 10%;
  animation: float 6s ease-in-out infinite;
}

.about-visual .glow-orb:nth-child(2) {
  width: 50%;
  height: 50%;
  background: var(--accent-purple);
  bottom: 10%;
  right: 10%;
  animation: float 8s ease-in-out infinite reverse;
}

/* ==========================================================================
   联系区
   ========================================================================== */
.contact-section {
  text-align: center;
}

.contact-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 64px 48px;
  backdrop-filter: blur(20px);
  position: relative;
  overflow: hidden;
}

.contact-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-primary);
}

.contact-card h3 {
  font-size: 2rem;
  font-weight: 800;
  margin-bottom: 16px;
}

.contact-card p {
  color: var(--text-secondary);
  margin-bottom: 32px;
  font-size: 1.1rem;
}

.contact-wechat {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 16px 32px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  font-size: 1.1rem;
  color: var(--text-primary);
  font-weight: 600;
}

.contact-wechat .wechat-icon {
  font-size: 1.4rem;
}

/* ==========================================================================
   Footer
   ========================================================================== */
.footer {
  padding: 48px 0 32px;
  border-top: 1px solid var(--border);
  background: rgba(5, 8, 22, 0.5);
  backdrop-filter: blur(10px);
  position: relative;
  z-index: 1;
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 24px;
  margin-bottom: 24px;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 1.2rem;
  font-weight: 700;
}

.footer-brand .gradient-text {
  background: var(--gradient-text);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.footer-links {
  display: flex;
  gap: 24px;
  list-style: none;
}

.footer-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.9rem;
  transition: var(--transition);
}

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

.footer-bottom {
  text-align: center;
  color: var(--text-muted);
  font-size: 0.85rem;
  padding-top: 24px;
  border-top: 1px solid var(--border);
}

/* 备案信息悬挂 */
.footer-beian {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 10px;
}

/* 备案链接 */
.footer-beian a {
  color: var(--text-muted);
  text-decoration: none;
  transition: color var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.footer-beian a:hover {
  color: var(--accent-cyan);
}

/* 公安备案警徽图标 */
.beian-ga img {
  width: 14px;
  height: 14px;
  vertical-align: middle;
}

/* ==========================================================================
   产品详情页
   ========================================================================== */
.product-hero {
  padding: 140px 24px 80px;
  position: relative;
  overflow: hidden;
}

.product-hero::before {
  content: '';
  position: absolute;
  width: 600px;
  height: 600px;
  background: var(--accent-blue);
  border-radius: 50%;
  filter: blur(120px);
  opacity: 0.3;
  top: -200px;
  right: -100px;
  z-index: 0;
}

.product-hero-content {
  position: relative;
  z-index: 2;
  max-width: 1280px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.product-hero-info h1 {
  font-size: clamp(2.5rem, 5vw, 3.5rem);
  font-weight: 800;
  margin-bottom: 12px;
  letter-spacing: -1px;
}

.product-hero-info .version-badge {
  display: inline-block;
  padding: 4px 14px;
  background: rgba(99, 102, 241, 0.2);
  border: 1px solid var(--border-hover);
  border-radius: 100px;
  font-size: 0.85rem;
  color: var(--accent-cyan);
  font-weight: 600;
  margin-bottom: 24px;
}

.product-hero-info .tagline {
  font-size: 1.25rem;
  color: var(--text-secondary);
  margin-bottom: 32px;
}

.product-hero-info .description {
  color: var(--text-secondary);
  margin-bottom: 32px;
  font-size: 1rem;
  line-height: 1.7;
}

.product-hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 32px;
}

.product-meta {
  display: flex;
  gap: 32px;
  flex-wrap: wrap;
}

.meta-item {
  display: flex;
  flex-direction: column;
}

.meta-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 4px;
}

.meta-value {
  font-size: 1rem;
  color: var(--text-primary);
  font-weight: 600;
}

/* 产品预览图 */
.product-preview {
  position: relative;
  aspect-ratio: 4/3;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  backdrop-filter: blur(20px);
  box-shadow: var(--shadow-card);
}

.product-preview img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.product-preview .preview-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient-bg);
  position: relative;
  overflow: hidden;
}

.product-preview .preview-placeholder::before {
  content: '';
  position: absolute;
  width: 60%;
  height: 60%;
  background: var(--gradient-primary);
  border-radius: 50%;
  filter: blur(60px);
  opacity: 0.4;
  animation: float 6s ease-in-out infinite;
}

.preview-placeholder .icon {
  font-size: 6rem;
  position: relative;
  z-index: 2;
  filter: drop-shadow(0 0 30px var(--accent-glow));
}

/* ==========================================================================
   特性区块
   ========================================================================== */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
  transition: var(--transition);
  backdrop-filter: blur(20px);
  position: relative;
  overflow: hidden;
}

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

.feature-card .feature-num {
  position: absolute;
  top: 20px;
  right: 24px;
  font-size: 3rem;
  font-weight: 800;
  color: var(--accent-purple);
  opacity: 0.1;
}

.feature-icon {
  width: 56px;
  height: 56px;
  background: var(--gradient-primary);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.75rem;
  margin-bottom: 20px;
  box-shadow: 0 4px 16px rgba(99, 102, 241, 0.3);
}

.feature-card h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.feature-card p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.6;
}

/* ==========================================================================
   下载区
   ========================================================================== */
.download-section {
  padding: 80px 0;
}

.download-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 64px 48px;
  text-align: center;
  backdrop-filter: blur(20px);
  position: relative;
  overflow: hidden;
}

.download-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-primary);
}

.download-card h2 {
  font-size: 2.25rem;
  font-weight: 800;
  margin-bottom: 16px;
}

.download-card p {
  color: var(--text-secondary);
  margin-bottom: 40px;
  font-size: 1.1rem;
}

.download-options {
  display: flex;
  gap: 24px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 32px;
}

.download-option {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 32px 40px;
  min-width: 260px;
  transition: var(--transition);
  text-decoration: none;
  color: var(--text-primary);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

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

.download-option .download-icon {
  font-size: 2.5rem;
}

.download-option .download-title {
  font-size: 1.2rem;
  font-weight: 700;
}

.download-option .download-desc {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.download-option .download-btn {
  margin-top: 8px;
  padding: 10px 24px;
  background: var(--gradient-primary);
  border-radius: var(--radius-sm);
  color: white;
  font-size: 0.9rem;
  font-weight: 600;
  box-shadow: 0 4px 12px rgba(99, 102, 241, 0.4);
}

.download-note {
  margin-top: 24px;
  padding: 16px 24px;
  background: rgba(99, 102, 241, 0.08);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  font-size: 0.9rem;
  display: inline-block;
  text-align: left;
}

.download-note strong {
  color: var(--accent-cyan);
}

/* ==========================================================================
   规格表
   ========================================================================== */
.specs-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}

.spec-group {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
  backdrop-filter: blur(20px);
}

.spec-group h3 {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 20px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 10px;
}

.spec-list {
  list-style: none;
}

.spec-list li {
  display: flex;
  justify-content: space-between;
  padding: 10px 0;
  font-size: 0.95rem;
  border-bottom: 1px dashed var(--border);
}

.spec-list li:last-child {
  border-bottom: none;
}

.spec-list .spec-label {
  color: var(--text-secondary);
}

.spec-list .spec-value {
  color: var(--text-primary);
  font-weight: 600;
}

/* ==========================================================================
   面包屑
   ========================================================================== */
.breadcrumb {
  padding: 100px 24px 20px;
  max-width: 1280px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.breadcrumb-list {
  display: flex;
  align-items: center;
  gap: 8px;
  list-style: none;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.breadcrumb-list a {
  color: var(--text-secondary);
  text-decoration: none;
  transition: var(--transition);
}

.breadcrumb-list a:hover {
  color: var(--accent-cyan);
}

.breadcrumb-list .separator {
  color: var(--text-muted);
}

.breadcrumb-list .current {
  color: var(--text-primary);
}

/* ==========================================================================
   占位页（开发中）
   ========================================================================== */
.coming-soon-hero {
  min-height: 70vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 120px 24px 60px;
  position: relative;
}

.coming-soon-content {
  max-width: 600px;
  position: relative;
  z-index: 2;
}

.coming-soon-content .icon {
  font-size: 5rem;
  margin-bottom: 24px;
  display: inline-block;
  filter: drop-shadow(0 0 30px var(--accent-glow));
  animation: float 4s ease-in-out infinite;
}

.coming-soon-content h1 {
  font-size: 2.5rem;
  font-weight: 800;
  margin-bottom: 16px;
}

.coming-soon-content .gradient-text {
  background: var(--gradient-text);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.coming-soon-content p {
  color: var(--text-secondary);
  font-size: 1.15rem;
  margin-bottom: 32px;
}

.coming-soon-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 24px;
  background: rgba(168, 85, 247, 0.15);
  border: 1px solid rgba(168, 85, 247, 0.4);
  border-radius: 100px;
  font-size: 0.95rem;
  color: var(--accent-purple);
  font-weight: 600;
  margin-bottom: 32px;
}

.coming-soon-badge .dot {
  width: 8px;
  height: 8px;
  background: var(--accent-purple);
  border-radius: 50%;
  animation: pulse 2s ease-in-out infinite;
}

/* ==========================================================================
   响应式
   ========================================================================== */
@media (max-width: 968px) {
  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    background: rgba(5, 8, 22, 0.95);
    padding: 24px;
    gap: 16px;
    border-bottom: 1px solid var(--border);
  }

  .nav-links.active {
    display: flex;
  }

  .nav-toggle {
    display: block;
  }

  .product-hero-content,
  .about-content {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .hero-stats {
    gap: 24px;
    padding: 24px;
  }
}

@media (max-width: 640px) {
  .container {
    padding: 0 16px;
  }

  section {
    padding: 64px 0;
  }

  .hero {
    padding: 100px 16px 60px;
  }

  .hero-actions {
    flex-direction: column;
    width: 100%;
  }

  .hero-actions .btn {
    width: 100%;
    justify-content: center;
  }

  .download-options {
    flex-direction: column;
  }

  .download-option {
    width: 100%;
  }

  .footer-content {
    flex-direction: column;
    text-align: center;
  }
}

/* ==========================================================================
   滚动出现动画
   ========================================================================== */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.reveal.active {
  opacity: 1;
  transform: translateY(0);
}

.reveal:nth-child(2) { transition-delay: 0.1s; }
.reveal:nth-child(3) { transition-delay: 0.2s; }
.reveal:nth-child(4) { transition-delay: 0.3s; }