/* ============================================
   OY 官网 - 全局样式表
   主题：专业加密货币交易所风格
   配色：深蓝 + 金色 + 深色背景
   ============================================ */

/* CSS Reset & Base */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --color-primary: #1a73e8;
  --color-primary-dark: #0d47a1;
  --color-secondary: #f5a623;
  --color-secondary-light: #ffc947;
  --color-accent: #00d4aa;
  --color-dark: #0a0e17;
  --color-dark-2: #111827;
  --color-dark-3: #1f2937;
  --color-gray: #6b7280;
  --color-gray-light: #9ca3af;
  --color-text: #ffffff;
  --color-text-secondary: #d1d5db;
  --color-text-muted: #9ca3af;
  --color-border: rgba(255, 255, 255, 0.08);
  --color-success: #10b981;
  --color-danger: #ef4444;
  --color-warning: #f59e0b;
  --gradient-primary: linear-gradient(135deg, #1a73e8 0%, #0d47a1 100%);
  --gradient-gold: linear-gradient(135deg, #f5a623 0%, #ffc947 50%, #f5a623 100%);
  --gradient-dark: linear-gradient(180deg, #0a0e17 0%, #111827 100%);
  --gradient-hero: radial-gradient(ellipse at top, #1a73e833 0%, transparent 60%), radial-gradient(ellipse at bottom right, #f5a62322 0%, transparent 50%), #0a0e17;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4), 0 2px 4px -1px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5), 0 4px 6px -2px rgba(0, 0, 0, 0.4);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.6), 0 10px 10px -5px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 30px rgba(26, 115, 232, 0.3);
  --shadow-gold: 0 0 30px rgba(245, 166, 35, 0.4);
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 20px;
  --radius-full: 9999px;
  --transition-fast: 0.15s ease;
  --transition-base: 0.3s ease;
  --transition-slow: 0.5s ease;
  --max-width: 1200px;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
  background-color: var(--color-dark);
  color: var(--color-text);
  line-height: 1.7;
  overflow-x: hidden;
  min-height: 100vh;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-fast);
}

ul, ol {
  list-style: none;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
}

/* ============================================
   Header & Navigation
   ============================================ */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(10, 14, 23, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--color-border);
  transition: background var(--transition-base), box-shadow var(--transition-base);
}

.header.scrolled {
  background: rgba(10, 14, 23, 0.95);
  box-shadow: var(--shadow-lg);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 1.375rem;
  font-weight: 700;
  color: var(--color-text);
}

.nav-brand-logo {
  width: 40px;
  height: 40px;
  background: var(--gradient-primary);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 1.25rem;
  color: #fff;
  box-shadow: var(--shadow-glow);
}

.nav-brand-text {
  background: var(--gradient-gold);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-size: 1.25rem;
  font-weight: 800;
  letter-spacing: 0.5px;
}

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

.nav-link {
  padding: 8px 16px;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  position: relative;
}

.nav-link:hover {
  color: var(--color-text);
  background: rgba(255, 255, 255, 0.05);
}

.nav-link.active {
  color: var(--color-secondary);
  background: rgba(245, 166, 35, 0.1);
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: 2px;
  left: 50%;
  transform: translateX(-50%);
  width: 20px;
  height: 2px;
  background: var(--gradient-gold);
  border-radius: 1px;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: all var(--transition-base);
}

.nav-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.nav-toggle.active span:nth-child(2) {
  opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* ============================================
   Buttons
   ============================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  transition: all var(--transition-base);
  white-space: nowrap;
  cursor: pointer;
  border: none;
  line-height: 1.5;
}

.btn-primary {
  background: var(--gradient-primary);
  color: #ffffff;
  box-shadow: 0 4px 14px rgba(26, 115, 232, 0.35);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(26, 115, 232, 0.5);
}

.btn-gold {
  background: var(--gradient-gold);
  color: var(--color-dark);
  box-shadow: var(--shadow-gold);
}

.btn-gold:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(245, 166, 35, 0.6);
}

.btn-outline {
  background: transparent;
  color: var(--color-text);
  border: 2px solid rgba(255, 255, 255, 0.2);
}

.btn-outline:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: rgba(26, 115, 232, 0.1);
}

.btn-lg {
  padding: 16px 36px;
  font-size: 1.05rem;
  border-radius: var(--radius-lg);
}

.btn-sm {
  padding: 8px 18px;
  font-size: 0.875rem;
}

.btn-block {
  width: 100%;
}

/* ============================================
   Hero Section
   ============================================ */
.hero {
  min-height: 100vh;
  padding: 160px 0 100px;
  background: var(--gradient-hero);
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
  pointer-events: none;
}

.hero-particles {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  overflow: hidden;
  pointer-events: none;
}

.hero-particles span {
  position: absolute;
  width: 4px;
  height: 4px;
  background: var(--color-secondary);
  border-radius: 50%;
  opacity: 0;
  animation: floatUp 8s infinite linear;
}

@keyframes floatUp {
  0% {
    opacity: 0;
    transform: translateY(100vh) scale(0);
  }
  10% {
    opacity: 0.6;
  }
  90% {
    opacity: 0.6;
  }
  100% {
    opacity: 0;
    transform: translateY(-10vh) scale(1);
  }
}

.hero-content {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.hero-text {
  animation: fadeInUp 1s ease-out;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  background: rgba(26, 115, 232, 0.15);
  border: 1px solid rgba(26, 115, 232, 0.3);
  border-radius: var(--radius-full);
  font-size: 0.875rem;
  color: var(--color-primary);
  margin-bottom: 24px;
}

.hero-badge-dot {
  width: 8px;
  height: 8px;
  background: var(--color-success);
  border-radius: 50%;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% {
    opacity: 1;
    transform: scale(1);
  }
  50% {
    opacity: 0.5;
    transform: scale(1.2);
  }
}

.hero-title {
  font-size: 3.25rem;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 24px;
  letter-spacing: -0.5px;
}

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

.hero-subtitle {
  font-size: 1.125rem;
  color: var(--color-text-secondary);
  margin-bottom: 36px;
  line-height: 1.8;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 48px;
}

.hero-stats {
  display: flex;
  gap: 40px;
  flex-wrap: wrap;
}

.hero-stat {
  display: flex;
  flex-direction: column;
}

.hero-stat-number {
  font-size: 1.75rem;
  font-weight: 800;
  background: var(--gradient-gold);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-stat-label {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  margin-top: 4px;
}

.hero-visual {
  animation: fadeInRight 1s ease-out;
  position: relative;
}

.hero-app-mockup {
  position: relative;
  width: 100%;
  max-width: 400px;
  margin: 0 auto;
}

.phone-frame {
  background: linear-gradient(145deg, #1a2236, #0f1520);
  border-radius: 40px;
  padding: 16px;
  box-shadow: var(--shadow-xl), var(--shadow-glow);
  border: 2px solid rgba(255, 255, 255, 0.08);
}

.phone-screen {
  background: linear-gradient(180deg, #0d1421, #1a2332);
  border-radius: 28px;
  padding: 20px;
  min-height: 520px;
  position: relative;
  overflow: hidden;
}

.phone-notch {
  width: 120px;
  height: 28px;
  background: #0a0e17;
  border-radius: 0 0 18px 18px;
  margin: -20px auto 20px;
}

.app-preview {
  text-align: center;
}

.app-logo-big {
  width: 64px;
  height: 64px;
  background: var(--gradient-gold);
  border-radius: 16px;
  margin: 0 auto 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.75rem;
  font-weight: 900;
  color: var(--color-dark);
}

.app-title-small {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.app-market-card {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 14px;
  margin: 12px 0;
  text-align: left;
}

.app-market-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 8px 0;
  border-bottom: 1px solid var(--color-border);
}

.app-market-row:last-child {
  border-bottom: none;
}

.app-market-name {
  font-weight: 600;
  font-size: 0.95rem;
}

.app-market-price {
  font-weight: 700;
  font-size: 0.95rem;
}

.app-market-change {
  font-size: 0.8rem;
  font-weight: 600;
}

.app-market-change.up {
  color: var(--color-success);
}

.app-market-change.down {
  color: var(--color-danger);
}

.app-trade-btn {
  display: block;
  width: 100%;
  padding: 14px;
  background: var(--gradient-primary);
  color: #fff;
  border-radius: var(--radius-md);
  font-weight: 600;
  margin-top: 16px;
}

.hero-floating-card {
  position: absolute;
  background: rgba(17, 24, 39, 0.95);
  backdrop-filter: blur(10px);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 16px;
  box-shadow: var(--shadow-lg);
}

.hero-floating-card.card-1 {
  top: 10%;
  left: -20px;
  animation: float 6s ease-in-out infinite;
}

.hero-floating-card.card-2 {
  bottom: 20%;
  right: -30px;
  animation: float 7s ease-in-out infinite reverse;
}

.floating-card-icon {
  width: 36px;
  height: 36px;
  background: var(--gradient-primary);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.125rem;
  margin-bottom: 8px;
}

.floating-card-title {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  margin-bottom: 2px;
}

.floating-card-value {
  font-size: 1.125rem;
  font-weight: 700;
}

@keyframes float {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-15px); }
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(40px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInRight {
  from {
    opacity: 0;
    transform: translateX(40px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

/* ============================================
   Section Common
   ============================================ */
.section {
  padding: 100px 0;
  position: relative;
}

.section-dark {
  background: var(--gradient-dark);
}

.section-alt {
  background: var(--color-dark-2);
}

.section-header {
  text-align: center;
  margin-bottom: 60px;
}

.section-tag {
  display: inline-block;
  padding: 6px 18px;
  background: rgba(245, 166, 35, 0.1);
  border: 1px solid rgba(245, 166, 35, 0.3);
  border-radius: var(--radius-full);
  font-size: 0.875rem;
  color: var(--color-secondary);
  margin-bottom: 16px;
  font-weight: 500;
}

.section-title {
  font-size: 2.5rem;
  font-weight: 800;
  margin-bottom: 16px;
  letter-spacing: -0.5px;
}

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

.section-desc {
  font-size: 1.05rem;
  color: var(--color-text-secondary);
  max-width: 640px;
  margin: 0 auto;
  line-height: 1.8;
}

/* ============================================
   Trust Bar
   ============================================ */
.trust-bar {
  padding: 40px 0;
  background: var(--color-dark-2);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.trust-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 30px;
}

.trust-item {
  text-align: center;
  padding: 20px;
}

.trust-icon {
  font-size: 2rem;
  margin-bottom: 12px;
}

.trust-value {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--color-secondary);
  margin-bottom: 4px;
}

.trust-label {
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

/* ============================================
   Features Section
   ============================================ */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.feature-card {
  background: linear-gradient(145deg, #1a2236, #111827);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: 40px 32px;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: transparent;
  transition: background var(--transition-base);
}

.feature-card:hover {
  transform: translateY(-8px);
  border-color: rgba(26, 115, 232, 0.4);
  box-shadow: var(--shadow-xl), 0 0 40px rgba(26, 115, 232, 0.15);
}

.feature-card:hover::before {
  background: var(--gradient-gold);
}

.feature-icon {
  width: 64px;
  height: 64px;
  background: linear-gradient(135deg, rgba(26, 115, 232, 0.2), rgba(245, 166, 35, 0.2));
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.75rem;
  margin-bottom: 24px;
}

.feature-title {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--color-text);
}

.feature-desc {
  font-size: 0.95rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

/* ============================================
   Services Section
   ============================================ */
.services-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.services-image-wrapper {
  position: relative;
}

.services-image {
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-xl);
}

.services-image img {
  width: 100%;
  height: 480px;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.services-image:hover img {
  transform: scale(1.05);
}

.services-image-badge {
  position: absolute;
  bottom: -20px;
  right: -20px;
  background: var(--gradient-gold);
  color: var(--color-dark);
  padding: 20px 28px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-gold);
}

.services-image-badge strong {
  display: block;
  font-size: 1.5rem;
  font-weight: 800;
}

.services-image-badge span {
  font-size: 0.85rem;
}

.services-list {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.service-item {
  display: flex;
  gap: 20px;
  padding: 24px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: all var(--transition-base);
}

.service-item:hover {
  background: rgba(255, 255, 255, 0.06);
  border-color: rgba(245, 166, 35, 0.3);
  transform: translateX(8px);
}

.service-number {
  width: 44px;
  height: 44px;
  background: var(--gradient-gold);
  color: var(--color-dark);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 1.125rem;
  flex-shrink: 0;
}

.service-content h3 {
  font-size: 1.125rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--color-text);
}

.service-content p {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

/* ============================================
   Products Grid
   ============================================ */
.products-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.product-card {
  background: linear-gradient(145deg, #1a2236, #111827);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  transition: all var(--transition-base);
  text-align: center;
}

.product-card:hover {
  transform: translateY(-6px);
  border-color: var(--color-secondary);
  box-shadow: var(--shadow-lg), 0 0 30px rgba(245, 166, 35, 0.2);
}

.product-icon {
  width: 56px;
  height: 56px;
  background: var(--gradient-primary);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin: 0 auto 16px;
}

.product-name {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 6px;
}

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

/* ============================================
   Download Section
   ============================================ */
.download-section {
  padding: 100px 0;
  background: linear-gradient(135deg, #0d1421 0%, #1a2332 50%, #0d1421 100%);
  position: relative;
  overflow: hidden;
}

.download-section::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(245, 166, 35, 0.1) 0%, transparent 70%);
  border-radius: 50%;
}

.download-content {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.download-text h2 {
  font-size: 2.5rem;
  font-weight: 800;
  margin-bottom: 20px;
}

.download-text h2 span {
  background: var(--gradient-gold);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.download-text p {
  color: var(--color-text-secondary);
  font-size: 1.05rem;
  line-height: 1.8;
  margin-bottom: 36px;
}

.download-buttons {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.download-btn {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 16px 28px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-lg);
  transition: all var(--transition-base);
  cursor: pointer;
}

.download-btn:hover {
  background: rgba(255, 255, 255, 0.15);
  border-color: var(--color-secondary);
  transform: translateY(-2px);
}

.download-btn-icon {
  font-size: 2rem;
}

.download-btn-text small {
  display: block;
  font-size: 0.75rem;
  color: var(--color-text-muted);
}

.download-btn-text strong {
  font-size: 1.05rem;
  font-weight: 600;
}

.download-qrcode {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
}

.qrcode-wrapper {
  background: #ffffff;
  padding: 24px;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
}

.qrcode-wrapper img {
  width: 180px;
  height: 180px;
}

.qrcode-label {
  font-size: 0.95rem;
  color: var(--color-text-secondary);
}

/* ============================================
   CTA Section
   ============================================ */
.cta-section {
  padding: 80px 0;
  background: linear-gradient(135deg, #1a73e8 0%, #0d47a1 50%, #1a73e8 100%);
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

.cta-content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 720px;
  margin: 0 auto;
}

.cta-title {
  font-size: 2.25rem;
  font-weight: 800;
  color: #ffffff;
  margin-bottom: 16px;
}

.cta-desc {
  font-size: 1.125rem;
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: 32px;
  line-height: 1.7;
}

.cta-section .btn-gold {
  padding: 16px 48px;
  font-size: 1.05rem;
}

/* ============================================
   FAQ Section
   ============================================ */
.faq-section {
  padding: 100px 0;
}

.faq-list {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  margin-bottom: 16px;
  overflow: hidden;
  transition: all var(--transition-base);
}

.faq-item.open {
  border-color: rgba(245, 166, 35, 0.4);
  background: rgba(245, 166, 35, 0.05);
}

.faq-question {
  width: 100%;
  padding: 24px 28px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  text-align: left;
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--color-text);
  background: none;
  cursor: pointer;
}

.faq-question-icon {
  width: 28px;
  height: 28px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  transition: transform var(--transition-base);
  flex-shrink: 0;
  margin-left: 16px;
}

.faq-item.open .faq-question-icon {
  transform: rotate(45deg);
  background: var(--gradient-gold);
  color: var(--color-dark);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-base), padding var(--transition-base);
}

.faq-item.open .faq-answer {
  max-height: 500px;
}

.faq-answer-inner {
  padding: 0 28px 24px;
  color: var(--color-text-secondary);
  line-height: 1.8;
  font-size: 0.95rem;
}

/* ============================================
   Footer
   ============================================ */
.footer {
  background: #06080f;
  border-top: 1px solid var(--color-border);
  padding: 80px 0 30px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 60px;
}

.footer-brand {
  margin-bottom: 24px;
}

.footer-desc {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  line-height: 1.8;
  margin-bottom: 24px;
  max-width: 320px;
}

.footer-socials {
  display: flex;
  gap: 12px;
}

.footer-social-link {
  width: 40px;
  height: 40px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
  font-size: 1.125rem;
}

.footer-social-link:hover {
  background: var(--gradient-primary);
  border-color: var(--color-primary);
  transform: translateY(-2px);
}

.footer-col h4 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 20px;
  color: var(--color-text);
}

.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-col a {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  transition: color var(--transition-fast);
}

.footer-col a:hover {
  color: var(--color-secondary);
}

.footer-bottom {
  padding-top: 30px;
  border-top: 1px solid var(--color-border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}

.footer-copyright {
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

.footer-bottom-links {
  display: flex;
  gap: 20px;
}

.footer-bottom-links a {
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

.footer-bottom-links a:hover {
  color: var(--color-secondary);
}

/* ============================================
   Page Header (内页)
   ============================================ */
.page-header {
  padding: 160px 0 80px;
  background: var(--gradient-hero);
  position: relative;
  overflow: hidden;
  text-align: center;
}

.page-header::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
  pointer-events: none;
}

.page-header-content {
  position: relative;
  z-index: 2;
  animation: fadeInUp 0.8s ease-out;
}

.page-header-title {
  font-size: 2.75rem;
  font-weight: 800;
  margin-bottom: 16px;
}

.page-header-title span {
  background: var(--gradient-gold);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.page-header-desc {
  font-size: 1.1rem;
  color: var(--color-text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

.breadcrumb {
  display: flex;
  justify-content: center;
  gap: 8px;
  font-size: 0.875rem;
  color: var(--color-text-muted);
  margin-bottom: 16px;
}

.breadcrumb a {
  color: var(--color-text-secondary);
  transition: color var(--transition-fast);
}

.breadcrumb a:hover {
  color: var(--color-secondary);
}

.breadcrumb-sep {
  opacity: 0.5;
}

/* ============================================
   About Page
   ============================================ */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.about-image img {
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
}

.about-text h2 {
  font-size: 2rem;
  font-weight: 800;
  margin-bottom: 20px;
}

.about-text p {
  color: var(--color-text-secondary);
  line-height: 1.9;
  margin-bottom: 16px;
}

.about-stats-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 40px;
}

.about-stat {
  text-align: center;
  padding: 20px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
}

.about-stat-value {
  font-size: 1.75rem;
  font-weight: 800;
  background: var(--gradient-gold);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

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

.team-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.team-card {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition-base);
  text-align: center;
}

.team-card:hover {
  transform: translateY(-6px);
  border-color: var(--color-secondary);
}

.team-photo {
  height: 260px;
  overflow: hidden;
}

.team-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.team-card:hover .team-photo img {
  transform: scale(1.08);
}

.team-info {
  padding: 20px;
}

.team-name {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 4px;
}

.team-role {
  font-size: 0.85rem;
  color: var(--color-secondary);
}

/* ============================================
   Contact Page
   ============================================ */
.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
}

.contact-form-wrapper {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: 40px;
}

.form-group {
  margin-bottom: 20px;
}

.form-label {
  display: block;
  font-size: 0.9rem;
  font-weight: 500;
  margin-bottom: 8px;
  color: var(--color-text-secondary);
}

.form-input,
.form-textarea,
.form-select {
  width: 100%;
  padding: 14px 18px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text);
  font-size: 0.95rem;
  font-family: inherit;
  transition: border-color var(--transition-fast), background var(--transition-fast);
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  outline: none;
  border-color: var(--color-primary);
  background: rgba(26, 115, 232, 0.05);
}

.form-textarea {
  resize: vertical;
  min-height: 140px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.contact-info-list {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.contact-info-card {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 28px;
  display: flex;
  gap: 20px;
  transition: all var(--transition-base);
}

.contact-info-card:hover {
  border-color: var(--color-secondary);
  background: rgba(245, 166, 35, 0.05);
}

.contact-info-icon {
  width: 52px;
  height: 52px;
  background: var(--gradient-gold);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.375rem;
  flex-shrink: 0;
  color: var(--color-dark);
}

.contact-info-content h3 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 6px;
}

.contact-info-content p {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

/* ============================================
   News Page
   ============================================ */
.news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.news-card {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition-base);
  display: flex;
  flex-direction: column;
}

.news-card:hover {
  transform: translateY(-6px);
  border-color: var(--color-secondary);
  box-shadow: var(--shadow-lg);
}

.news-image {
  height: 200px;
  overflow: hidden;
}

.news-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.news-card:hover .news-image img {
  transform: scale(1.08);
}

.news-body {
  padding: 24px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.news-meta {
  display: flex;
  gap: 16px;
  font-size: 0.8rem;
  color: var(--color-text-muted);
  margin-bottom: 12px;
}

.news-tag {
  padding: 2px 10px;
  background: rgba(245, 166, 35, 0.1);
  border-radius: var(--radius-full);
  color: var(--color-secondary);
  font-size: 0.75rem;
  font-weight: 500;
}

.news-title {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 12px;
  line-height: 1.5;
  color: var(--color-text);
}

.news-excerpt {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
  flex: 1;
}

.news-read-more {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-primary);
  margin-top: 16px;
  transition: gap var(--transition-fast);
}

.news-read-more:hover {
  gap: 12px;
}

.news-pagination {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 50px;
}

.pagination-btn {
  width: 40px;
  height: 40px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text-secondary);
  font-weight: 600;
  transition: all var(--transition-fast);
}

.pagination-btn:hover,
.pagination-btn.active {
  background: var(--gradient-primary);
  color: #ffffff;
  border-color: var(--color-primary);
}

/* ============================================
   News Detail Page
   ============================================ */
.news-detail {
  max-width: 800px;
  margin: 0 auto;
}

.news-detail-header {
  margin-bottom: 40px;
}

.news-detail-title {
  font-size: 2.25rem;
  font-weight: 800;
  line-height: 1.3;
  margin-bottom: 20px;
}

.news-detail-meta {
  display: flex;
  gap: 24px;
  color: var(--color-text-muted);
  font-size: 0.9rem;
}

.news-detail-cover {
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-bottom: 40px;
}

.news-detail-cover img {
  width: 100%;
  height: 400px;
  object-fit: cover;
}

.news-detail-body {
  font-size: 1.05rem;
  line-height: 2;
  color: var(--color-text-secondary);
}

.news-detail-body p {
  margin-bottom: 24px;
}

.news-detail-body h3 {
  font-size: 1.375rem;
  font-weight: 700;
  margin: 40px 0 16px;
  color: var(--color-text);
}

.news-detail-body ul {
  margin-bottom: 24px;
  padding-left: 20px;
}

.news-detail-body li {
  margin-bottom: 10px;
  list-style: disc;
}

.news-detail-body blockquote {
  border-left: 4px solid var(--color-secondary);
  padding: 20px 28px;
  margin: 24px 0;
  background: rgba(245, 166, 35, 0.05);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  font-style: italic;
  color: var(--color-text);
}

.news-detail-tags {
  display: flex;
  gap: 10px;
  margin-top: 50px;
  padding-top: 30px;
  border-top: 1px solid var(--color-border);
  flex-wrap: wrap;
}

.news-detail-tags span {
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

.news-detail-tag {
  padding: 6px 14px;
  background: rgba(26, 115, 232, 0.1);
  border: 1px solid rgba(26, 115, 232, 0.2);
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  color: var(--color-primary);
}

/* ============================================
   Products Detail Section
   ============================================ */
.product-detail {
  padding: 60px 0;
}

.product-detail-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.product-detail-layout.reverse {
  direction: rtl;
}

.product-detail-layout.reverse > * {
  direction: ltr;
}

.product-detail-image img {
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
}

.product-detail-content h3 {
  font-size: 1.75rem;
  font-weight: 800;
  margin-bottom: 16px;
}

.product-detail-content p {
  color: var(--color-text-secondary);
  line-height: 1.9;
  margin-bottom: 16px;
}

.product-detail-features {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin-top: 24px;
}

.product-detail-feature {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.9rem;
  color: var(--color-text-secondary);
}

.product-detail-feature-icon {
  width: 24px;
  height: 24px;
  background: rgba(16, 185, 129, 0.15);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  color: var(--color-success);
}

/* ============================================
   Animations & Reveal
   ============================================ */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

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

.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }

/* ============================================
   Back to Top
   ============================================ */
.back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 48px;
  height: 48px;
  background: var(--gradient-primary);
  color: #ffffff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-base);
  z-index: 999;
  cursor: pointer;
}

.back-to-top.show {
  opacity: 1;
  visibility: visible;
}

.back-to-top:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl), var(--shadow-glow);
}

/* ============================================
   Responsive - Tablet
   ============================================ */
@media (max-width: 1024px) {
  .hero-title {
    font-size: 2.5rem;
  }

  .hero-content,
  .services-layout,
  .download-content,
  .about-grid,
  .contact-layout,
  .product-detail-layout {
    grid-template-columns: 1fr;
    gap: 40px;
  }

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

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

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

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

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

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

  .section-title {
    font-size: 2rem;
  }

  .product-detail-layout.reverse {
    direction: ltr;
  }
}

/* ============================================
   Responsive - Mobile
   ============================================ */
@media (max-width: 768px) {
  .nav-menu {
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    background: rgba(10, 14, 23, 0.98);
    backdrop-filter: blur(20px);
    flex-direction: column;
    padding: 24px;
    gap: 8px;
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
    border-bottom: 1px solid var(--color-border);
  }

  .nav-menu.open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .nav-menu .nav-link {
    width: 100%;
    padding: 14px 20px;
    text-align: left;
  }

  .nav-toggle {
    display: flex;
  }

  .nav-actions .btn-primary {
    display: none;
  }

  .hero {
    padding: 120px 0 60px;
    min-height: auto;
  }

  .hero-title {
    font-size: 2rem;
  }

  .hero-subtitle {
    font-size: 1rem;
  }

  .hero-stats {
    gap: 24px;
  }

  .hero-stat-number {
    font-size: 1.375rem;
  }

  .hero-app-mockup {
    max-width: 320px;
  }

  .phone-screen {
    min-height: 420px;
  }

  .section {
    padding: 70px 0;
  }

  .section-title {
    font-size: 1.75rem;
  }

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

  .products-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }

  .trust-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }

  .team-grid {
    grid-template-columns: 1fr;
    max-width: 320px;
    margin: 0 auto;
  }

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

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

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

  .page-header {
    padding: 120px 0 60px;
  }

  .page-header-title {
    font-size: 2rem;
  }

  .about-stats-row {
    grid-template-columns: 1fr;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  .contact-form-wrapper {
    padding: 24px;
  }

  .download-text h2 {
    font-size: 2rem;
  }

  .cta-title {
    font-size: 1.75rem;
  }

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

  .news-detail-title {
    font-size: 1.75rem;
  }

  .news-detail-cover img {
    height: 240px;
  }

  .hero-floating-card.card-1 {
    left: -5px;
  }

  .hero-floating-card.card-2 {
    right: -5px;
  }

  .back-to-top {
    bottom: 20px;
    right: 20px;
    width: 42px;
    height: 42px;
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: 1.75rem;
  }

  .btn-lg {
    padding: 14px 28px;
    font-size: 0.95rem;
  }

  .hero-actions {
    flex-direction: column;
  }

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

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

  .trust-grid {
    grid-template-columns: 1fr 1fr;
    gap: 16px;
  }

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