/* ============================================
   Qpic - 科技感设计系统
   ============================================ */

/* CSS 变量 */
:root {
  --bg-primary: #060b18;
  --bg-secondary: #0a1128;
  --bg-card: rgba(15, 23, 50, 0.6);
  --bg-card-hover: rgba(20, 30, 65, 0.8);
  --bg-glass: rgba(10, 17, 40, 0.5);
  --bg-nav: rgba(6, 11, 24, 0.85);

  --accent-cyan: #00e5ff;
  --accent-blue: #3b82f6;
  --accent-purple: #8b5cf6;
  --accent-pink: #ec4899;

  --gradient-primary: linear-gradient(135deg, #00e5ff 0%, #3b82f6 50%, #8b5cf6 100%);
  --gradient-hero: linear-gradient(180deg, #060b18 0%, #0a1630 50%, #060b18 100%);
  --gradient-card: linear-gradient(135deg, rgba(0, 229, 255, 0.08) 0%, rgba(139, 92, 246, 0.08) 100%);
  --gradient-featured: linear-gradient(135deg, #0a2540 0%, #1a0a3e 100%);
  --gradient-cta: linear-gradient(135deg, #00e5ff 0%, #3b82f6 40%, #8b5cf6 100%);

  --text-primary: #e8edf5;
  --text-secondary: #8892a8;
  --text-muted: #5a6478;

  --border-subtle: rgba(0, 229, 255, 0.1);
  --border-glow: rgba(0, 229, 255, 0.3);

  --shadow-glow: 0 0 30px rgba(0, 229, 255, 0.15);
  --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.3);

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 980px;

  --font-sans: "SF Pro Display", -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-mono: "SF Mono", "Fira Code", "Cascadia Code", monospace;
}

/* 重置样式 */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-sans);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
}

a {
  text-decoration: none;
  color: inherit;
}

ul, ol {
  list-style: none;
}

/* ============================================
   背景装饰 - 网格线 + 光晕
   ============================================ */
.bg-grid {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
  background-image:
    linear-gradient(rgba(0, 229, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 229, 255, 0.03) 1px, transparent 1px);
  background-size: 60px 60px;
}

.bg-glow-1 {
  position: fixed;
  top: -200px;
  left: -200px;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0, 229, 255, 0.08) 0%, transparent 70%);
  pointer-events: none;
  z-index: 0;
  animation: floatGlow1 20s ease-in-out infinite;
}

.bg-glow-2 {
  position: fixed;
  bottom: -200px;
  right: -200px;
  width: 700px;
  height: 700px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(139, 92, 246, 0.08) 0%, transparent 70%);
  pointer-events: none;
  z-index: 0;
  animation: floatGlow2 25s ease-in-out infinite;
}

.bg-glow-3 {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 800px;
  height: 800px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(59, 130, 246, 0.04) 0%, transparent 70%);
  pointer-events: none;
  z-index: 0;
}

@keyframes floatGlow1 {
  0%, 100% { transform: translate(0, 0); }
  33% { transform: translate(100px, 80px); }
  66% { transform: translate(-50px, 120px); }
}

@keyframes floatGlow2 {
  0%, 100% { transform: translate(0, 0); }
  33% { transform: translate(-80px, -60px); }
  66% { transform: translate(60px, -100px); }
}

/* ============================================
   导航栏
   ============================================ */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: var(--bg-nav);
  backdrop-filter: saturate(180%) blur(24px);
  -webkit-backdrop-filter: saturate(180%) blur(24px);
  border-bottom: 1px solid var(--border-subtle);
  z-index: 9999;
  height: 64px;
  transition: all 0.3s ease;
}

.navbar.scrolled {
  background: rgba(6, 11, 24, 0.95);
  border-bottom-color: var(--border-glow);
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.nav-logo {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-primary);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 10px;
  letter-spacing: -0.5px;
}

.nav-logo-icon {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
  background: var(--gradient-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  box-shadow: 0 0 20px rgba(0, 229, 255, 0.3);
}

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

.nav-menu {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-menu a {
  color: var(--text-secondary);
  font-size: 14px;
  font-weight: 400;
  padding: 6px 14px;
  border-radius: var(--radius-full);
  transition: all 0.25s ease;
}

.nav-menu a:hover {
  color: var(--text-primary);
  background: rgba(0, 229, 255, 0.08);
}

.nav-btn {
  background: transparent !important;
  color: var(--accent-cyan) !important;
  border: 1px solid var(--border-glow) !important;
  -webkit-text-fill-color: initial !important;
  font-weight: 500 !important;
}

.nav-btn:hover {
  background: rgba(0, 229, 255, 0.1) !important;
  box-shadow: 0 0 20px rgba(0, 229, 255, 0.15);
}

/* 移动端菜单按钮 */
.nav-mobile-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 24px;
  cursor: pointer;
  padding: 4px;
}

/* ============================================
   Hero 区域
   ============================================ */
.hero {
  margin-top: 64px;
  padding: 100px 24px 120px;
  background: var(--gradient-hero);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background:
    radial-gradient(ellipse 80% 60% at 50% 0%, rgba(0, 229, 255, 0.06) 0%, transparent 60%),
    radial-gradient(ellipse 60% 40% at 30% 20%, rgba(139, 92, 246, 0.04) 0%, transparent 50%),
    radial-gradient(ellipse 60% 40% at 70% 20%, rgba(59, 130, 246, 0.04) 0%, transparent 50%);
  pointer-events: none;
}

.hero-container {
  max-width: 900px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px 6px 8px;
  border-radius: var(--radius-full);
  border: 1px solid var(--border-glow);
  background: rgba(0, 229, 255, 0.06);
  font-size: 13px;
  color: var(--accent-cyan);
  margin-bottom: 32px;
  animation: fadeInUp 0.6s ease both;
}

.hero-badge-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent-cyan);
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; box-shadow: 0 0 0 0 rgba(0, 229, 255, 0.4); }
  50% { opacity: 0.6; box-shadow: 0 0 0 6px rgba(0, 229, 255, 0); }
}

.hero-title {
  font-size: clamp(40px, 7vw, 72px);
  font-weight: 800;
  line-height: 1.05;
  margin-bottom: 20px;
  letter-spacing: -2px;
  animation: fadeInUp 0.6s ease 0.1s both;
}

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

.hero-subtitle {
  font-size: clamp(18px, 2.5vw, 24px);
  font-weight: 400;
  color: var(--text-secondary);
  margin-bottom: 16px;
  letter-spacing: -0.3px;
  animation: fadeInUp 0.6s ease 0.2s both;
}

.hero-description {
  font-size: 16px;
  color: var(--text-muted);
  margin-bottom: 48px;
  line-height: 1.7;
  animation: fadeInUp 0.6s ease 0.3s both;
}

.hero-buttons {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 72px;
  animation: fadeInUp 0.6s ease 0.4s both;
}

.btn-primary {
  background: var(--gradient-primary);
  color: #060b18;
  padding: 12px 32px;
  border-radius: var(--radius-full);
  font-size: 15px;
  font-weight: 600;
  transition: all 0.3s ease;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: none;
  cursor: pointer;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(0, 229, 255, 0.3);
}

.btn-secondary {
  background: transparent;
  color: var(--accent-cyan);
  padding: 12px 32px;
  border-radius: var(--radius-full);
  font-size: 15px;
  font-weight: 500;
  border: 1px solid var(--border-glow);
  transition: all 0.3s ease;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.btn-secondary:hover {
  background: rgba(0, 229, 255, 0.08);
  border-color: var(--accent-cyan);
  transform: translateY(-2px);
}

/* Hero 产品展示 */
.hero-visual {
  max-width: 960px;
  margin: 0 auto;
  position: relative;
  animation: fadeInUp 0.8s ease 0.5s both;
}

.hero-visual-frame {
  border-radius: var(--radius-xl);
  overflow: hidden;
  border: 1px solid var(--border-subtle);
  background: var(--bg-secondary);
  box-shadow:
    0 0 60px rgba(0, 229, 255, 0.08),
    0 25px 60px rgba(0, 0, 0, 0.4);
  position: relative;
}

.hero-visual-frame::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 36px;
  background: rgba(10, 17, 40, 0.9);
  border-bottom: 1px solid var(--border-subtle);
  z-index: 1;
}

.hero-visual-dots {
  position: absolute;
  top: 11px;
  left: 16px;
  display: flex;
  gap: 8px;
  z-index: 2;
}

.hero-visual-dots span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

.hero-visual-dots span:nth-child(1) { background: #ff5f56; }
.hero-visual-dots span:nth-child(2) { background: #ffbd2e; }
.hero-visual-dots span:nth-child(3) { background: #27c93f; }

.hero-visual img {
  width: 100%;
  height: auto;
  display: block;
  margin-top: 36px;
}

/* 浮动数据标签 */
.hero-float-tag {
  position: absolute;
  padding: 8px 14px;
  border-radius: var(--radius-md);
  background: var(--bg-glass);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-subtle);
  font-size: 12px;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 6px;
  animation: floatTag 6s ease-in-out infinite;
  z-index: 3;
}

.hero-float-tag .tag-value {
  color: var(--accent-cyan);
  font-weight: 600;
  font-family: var(--font-mono);
}

.hero-float-tag-1 {
  top: 20%;
  right: -20px;
  animation-delay: 0s;
}

.hero-float-tag-2 {
  bottom: 25%;
  left: -20px;
  animation-delay: 2s;
}

@keyframes floatTag {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

/* ============================================
   功能特性区域
   ============================================ */
.features {
  padding: 120px 24px;
  position: relative;
  z-index: 1;
}

.features-container {
  max-width: 1200px;
  margin: 0 auto;
}

.section-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--accent-cyan);
  margin-bottom: 16px;
}

.section-label::before {
  content: '';
  width: 24px;
  height: 1px;
  background: var(--accent-cyan);
}

.section-title {
  font-size: clamp(32px, 4vw, 48px);
  font-weight: 700;
  letter-spacing: -1.5px;
  color: var(--text-primary);
  margin-bottom: 16px;
}

.section-subtitle {
  font-size: 16px;
  color: var(--text-muted);
  margin-bottom: 64px;
  max-width: 500px;
}

.features-header {
  text-align: center;
  margin-bottom: 64px;
}

.features-header .section-subtitle {
  margin-left: auto;
  margin-right: auto;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.feature-card {
  padding: 36px 28px;
  border-radius: var(--radius-lg);
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  transition: all 0.4s ease;
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent-cyan), transparent);
  opacity: 0;
  transition: opacity 0.4s ease;
}

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

.feature-card:hover::before {
  opacity: 1;
}

.feature-icon-wrap {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background: var(--gradient-card);
  border: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  margin-bottom: 20px;
  transition: all 0.3s ease;
}

.feature-card:hover .feature-icon-wrap {
  border-color: var(--border-glow);
  box-shadow: 0 0 20px rgba(0, 229, 255, 0.15);
}

.feature-title {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--text-primary);
}

.feature-description {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.6;
}

/* 视频类功能卡片紫色主题 */
.feature-card.video-feature::before {
  background: linear-gradient(90deg, transparent, var(--accent-purple), transparent);
}

.feature-card.video-feature:hover {
  border-color: rgba(139, 92, 246, 0.3);
  box-shadow: 0 0 30px rgba(139, 92, 246, 0.1);
}

.feature-card.video-feature .feature-icon-wrap {
  background: linear-gradient(135deg, rgba(139, 92, 246, 0.08) 0%, rgba(236, 72, 153, 0.08) 100%);
}

.feature-card.video-feature:hover .feature-icon-wrap {
  border-color: rgba(139, 92, 246, 0.3);
  box-shadow: 0 0 20px rgba(139, 92, 246, 0.15);
}

/* 视频类展示区紫色编号 */
.showcase-item.video-showcase .showcase-number {
  background: linear-gradient(180deg, rgba(139, 92, 246, 0.2) 0%, transparent 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ============================================
   产品展示区
   ============================================ */
.showcase {
  padding: 120px 24px;
  position: relative;
  z-index: 1;
}

.showcase-container {
  max-width: 1200px;
  margin: 0 auto;
}

.showcase-item {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  margin-bottom: 80px;
}

.showcase-item:last-child {
  margin-bottom: 0;
}

.showcase-item:nth-child(even) {
  direction: rtl;
}

.showcase-item:nth-child(even) > * {
  direction: ltr;
}

.showcase-number {
  font-size: 80px;
  font-weight: 800;
  line-height: 1;
  background: linear-gradient(180deg, rgba(0, 229, 255, 0.15) 0%, transparent 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 16px;
  font-family: var(--font-mono);
}

.showcase-content h3 {
  font-size: 36px;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--text-primary);
  letter-spacing: -1px;
}

.showcase-content p {
  font-size: 16px;
  color: var(--text-secondary);
  margin-bottom: 28px;
  line-height: 1.6;
}

.showcase-features li {
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 14px;
  padding-left: 28px;
  position: relative;
}

.showcase-features li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 5px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  border: 1.5px solid var(--accent-cyan);
  background: rgba(0, 229, 255, 0.1);
}

.showcase-features li::after {
  content: '';
  position: absolute;
  left: 4.5px;
  top: 9px;
  width: 7px;
  height: 4px;
  border-left: 1.5px solid var(--accent-cyan);
  border-bottom: 1.5px solid var(--accent-cyan);
  transform: rotate(-45deg);
}

.showcase-visual {
  border-radius: var(--radius-xl);
  overflow: hidden;
  border: 1px solid var(--border-subtle);
  background: var(--bg-secondary);
  box-shadow: var(--shadow-card);
  position: relative;
}

.showcase-visual::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: linear-gradient(135deg, rgba(0, 229, 255, 0.05), transparent);
  pointer-events: none;
}

.showcase-visual img {
  width: 100%;
  height: auto;
  display: block;
}

/* ============================================
   价格区域
   ============================================ */
.pricing {
  padding: 120px 24px;
  position: relative;
  z-index: 1;
}

.pricing-container {
  max-width: 1100px;
  margin: 0 auto;
}

.pricing-header {
  text-align: center;
  margin-bottom: 64px;
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.pricing-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 36px 24px;
  text-align: center;
  transition: all 0.4s ease;
  position: relative;
  overflow: hidden;
}

.pricing-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--gradient-primary);
  opacity: 0;
  transition: opacity 0.4s ease;
}

.pricing-card:hover {
  border-color: var(--border-glow);
  transform: translateY(-6px);
  box-shadow: var(--shadow-glow);
}

.pricing-card:hover::before {
  opacity: 1;
}

.pricing-card.featured {
  background: var(--gradient-featured);
  border-color: var(--border-glow);
  transform: scale(1.03);
  box-shadow: 0 0 40px rgba(0, 229, 255, 0.15);
}

.pricing-card.featured::before {
  opacity: 1;
}

.pricing-badge {
  position: absolute;
  top: 12px;
  right: 12px;
  background: var(--gradient-primary);
  color: #060b18;
  padding: 3px 10px;
  border-radius: var(--radius-full);
  font-size: 11px;
  font-weight: 700;
}

.pricing-type {
  font-size: 13px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--text-muted);
  margin-bottom: 16px;
}

.pricing-price {
  font-size: 44px;
  font-weight: 800;
  margin-bottom: 4px;
  letter-spacing: -2px;
  font-family: var(--font-mono);
  color: var(--text-primary);
}

.pricing-price-symbol {
  font-size: 20px;
  font-weight: 600;
  vertical-align: super;
  margin-right: 2px;
}

.pricing-period {
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 28px;
}

.pricing-features {
  text-align: left;
  margin-bottom: 28px;
}

.pricing-features li {
  padding: 8px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
  font-size: 13px;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 8px;
}

.pricing-features li .check-icon {
  color: var(--accent-cyan);
  font-size: 14px;
  flex-shrink: 0;
}

.pricing-btn {
  width: 100%;
  background: transparent;
  color: var(--accent-cyan);
  padding: 10px 20px;
  border-radius: var(--radius-full);
  border: 1px solid var(--border-glow);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
}

.pricing-btn:hover {
  background: rgba(0, 229, 255, 0.1);
  box-shadow: 0 0 20px rgba(0, 229, 255, 0.15);
}

.pricing-card.featured .pricing-btn {
  background: var(--gradient-primary);
  color: #060b18;
  border: none;
  font-weight: 700;
}

.pricing-card.featured .pricing-btn:hover {
  box-shadow: 0 0 30px rgba(0, 229, 255, 0.3);
  transform: translateY(-1px);
}

/* ============================================
   CTA 区域
   ============================================ */
.cta {
  padding: 120px 24px;
  position: relative;
  z-index: 1;
  overflow: hidden;
}

.cta-inner {
  max-width: 900px;
  margin: 0 auto;
  border-radius: var(--radius-xl);
  background: var(--gradient-cta);
  padding: 80px 60px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-inner::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background:
    radial-gradient(ellipse at 30% 30%, rgba(255, 255, 255, 0.1) 0%, transparent 50%),
    radial-gradient(ellipse at 70% 70%, rgba(255, 255, 255, 0.05) 0%, transparent 50%);
  pointer-events: none;
}

.cta-inner::after {
  content: '';
  position: absolute;
  inset: 1px;
  border-radius: inherit;
  background: rgba(6, 11, 24, 0.85);
  z-index: 0;
}

.cta-content {
  position: relative;
  z-index: 1;
}

.cta h2 {
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 700;
  margin-bottom: 16px;
  letter-spacing: -1px;
}

.cta p {
  font-size: 16px;
  color: var(--text-secondary);
  margin-bottom: 36px;
}

.cta .btn-primary {
  background: var(--gradient-primary);
  color: #060b18;
  font-weight: 700;
}

/* ============================================
   页脚
   ============================================ */
.footer {
  border-top: 1px solid var(--border-subtle);
  padding: 64px 24px 24px;
  position: relative;
  z-index: 1;
}

.footer-container {
  max-width: 1200px;
  margin: 0 auto;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr repeat(3, 1fr);
  gap: 48px;
  margin-bottom: 48px;
}

.footer-brand {
  max-width: 280px;
}

.footer-brand-name {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 8px;
}

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

.footer-brand-desc {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.6;
}

.footer-section h4 {
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 16px;
  color: var(--text-primary);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.footer-section ul li {
  margin-bottom: 10px;
}

.footer-section a {
  color: var(--text-muted);
  font-size: 13px;
  transition: all 0.2s ease;
}

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

.footer-bottom {
  border-top: 1px solid var(--border-subtle);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--text-muted);
  font-size: 12px;
}

/* ============================================
   动画
   ============================================ */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(24px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.animate-on-scroll {
  opacity: 0;
  transform: translateY(24px);
  transition: all 0.6s cubic-bezier(0.22, 1, 0.36, 1);
}

.animate-on-scroll.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ============================================
   响应式
   ============================================ */
@media (max-width: 1024px) {
  .pricing-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .nav-menu {
    display: none;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: var(--bg-nav);
    backdrop-filter: blur(24px);
    border-bottom: 1px solid var(--border-subtle);
    flex-direction: column;
    padding: 16px;
    gap: 4px;
  }

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

  .nav-menu a {
    padding: 10px 16px;
    width: 100%;
  }

  .nav-mobile-toggle {
    display: block;
  }

  .hero {
    padding: 60px 24px 80px;
  }

  .hero-buttons {
    flex-direction: column;
    gap: 12px;
    align-items: center;
  }

  .hero-float-tag {
    display: none;
  }

  .features-grid {
    grid-template-columns: 1fr;
  }

  .showcase-item {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .showcase-item:nth-child(even) {
    direction: ltr;
  }

  .showcase-number {
    font-size: 48px;
  }

  .showcase-content h3 {
    font-size: 28px;
  }

  .pricing-grid {
    grid-template-columns: 1fr;
  }

  .pricing-card.featured {
    transform: scale(1);
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }

  .footer-brand {
    grid-column: 1 / -1;
  }

  .footer-bottom {
    flex-direction: column;
    gap: 8px;
    text-align: center;
  }

  .cta-inner {
    padding: 48px 24px;
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: 36px;
    letter-spacing: -1px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
  }
}