/* ===================================================
   唯客app下载安卓版 - 数字货币交易所正版下载
   主样式表
   =================================================== */

/* ---- CSS 变量 ---- */
:root {
  --bg-dark: #0c0f1a;
  --bg-card: #141829;
  --bg-card-hover: #1a1f35;
  --text-primary: #ffffff;
  --text-secondary: #a0aec0;
  --text-muted: #64748b;
  --weex-blue: #2563eb;
  --weex-blue-light: #3b82f6;
  --weex-blue-dark: #1d4ed8;
  --android-green: #3ddc84;
  --android-green-dark: #2bb872;
  --gold: #f59e0b;
  --gold-light: #fbbf24;
  --secure-purple: #8b5cf6;
  --secure-purple-light: #a78bfa;
  --border-color: #1e293b;
  --border-subtle: #2d3548;
  --gradient-hero: linear-gradient(135deg, #0c0f1a 0%, #141a30 40%, #1a2444 70%, #0c0f1a 100%);
  --gradient-card: linear-gradient(145deg, #141829 0%, #1a1f35 100%);
  --gradient-blue: linear-gradient(135deg, #2563eb 0%, #3b82f6 50%, #1d4ed8 100%);
  --gradient-green: linear-gradient(135deg, #2bb872 0%, #3ddc84 100%);
  --gradient-gold: linear-gradient(135deg, #f59e0b 0%, #fbbf24 100%);
  --gradient-purple: linear-gradient(135deg, #8b5cf6 0%, #a78bfa 100%);
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.2);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.4);
  --shadow-blue: 0 4px 20px rgba(37, 99, 235, 0.25);
  --shadow-green: 0 4px 20px rgba(61, 220, 132, 0.25);
  --shadow-purple: 0 4px 20px rgba(139, 92, 246, 0.25);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  background-color: var(--bg-dark);
  color: var(--text-primary);
  line-height: 1.7;
  overflow-x: hidden;
}

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

ul { list-style: none; }
img { max-width: 100%; height: auto; display: block; }

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* ---- 动画关键帧 ---- */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}

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

@keyframes scaleIn {
  from { opacity: 0; transform: scale(0.9); }
  to { opacity: 1; transform: scale(1); }
}

@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(37, 99, 235, 0.4); }
  50% { box-shadow: 0 0 0 18px rgba(37, 99, 235, 0); }
}

@keyframes pulseGreen {
  0%, 100% { box-shadow: 0 0 0 0 rgba(61, 220, 132, 0.4); }
  50% { box-shadow: 0 0 0 18px rgba(61, 220, 132, 0); }
}

@keyframes androidBounce {
  0%, 100% { transform: translateY(0); }
  30% { transform: translateY(-12px); }
  50% { transform: translateY(0); }
  70% { transform: translateY(-6px); }
  85% { transform: translateY(0); }
}

@keyframes waveFloat {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  25% { transform: translateY(-8px) rotate(2deg); }
  75% { transform: translateY(4px) rotate(-1deg); }
}

@keyframes shimmer {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}

@keyframes borderGlow {
  0%, 100% { border-color: var(--weex-blue); box-shadow: 0 0 8px rgba(37, 99, 235, 0.3); }
  50% { border-color: var(--android-green); box-shadow: 0 0 16px rgba(61, 220, 132, 0.4); }
}

/* ---- 滚动揭示 ---- */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ---- 渐入 ---- */
.fade-in {
  animation: fadeInUp 0.6s ease forwards;
}
.fade-in-delay-1 { animation-delay: 0.1s; }
.fade-in-delay-2 { animation-delay: 0.2s; }
.fade-in-delay-3 { animation-delay: 0.3s; }
.fade-in-delay-4 { animation-delay: 0.4s; }
.fade-in-delay-5 { animation-delay: 0.5s; }

/* ==========================================
   导航栏
   ========================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(12, 15, 26, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-color);
  transition: all var(--transition-base);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--text-primary);
}
.logo-icon {
  width: 36px;
  height: 36px;
  background: var(--gradient-blue);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  font-weight: 800;
  color: #fff;
}

.main-nav { display: flex; align-items: center; gap: 28px; }
.main-nav a {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-secondary);
  position: relative;
  padding: 6px 0;
  transition: color var(--transition-fast);
}
.main-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 2px;
  background: var(--weex-blue-light);
  border-radius: 1px;
  transition: width var(--transition-base);
}
.main-nav a:hover,
.main-nav a.active {
  color: var(--text-primary);
}
.main-nav a:hover::after,
.main-nav a.active::after {
  width: 100%;
}

.nav-download-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--gradient-green);
  color: #000 !important;
  padding: 8px 18px;
  border-radius: 22px;
  font-weight: 600;
  font-size: 0.9rem;
  transition: all var(--transition-base);
}
.nav-download-btn:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-green);
  color: #000 !important;
}
.nav-download-btn::after { display: none !important; }

/* 移动端菜单按钮 */
.mobile-menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  flex-direction: column;
  gap: 5px;
}
.mobile-menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: all var(--transition-fast);
}

/* ==========================================
   按钮样式
   ========================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.95rem;
  border: none;
  cursor: pointer;
  transition: all var(--transition-base);
}

.btn-primary {
  background: var(--gradient-blue);
  color: #fff;
  box-shadow: var(--shadow-blue);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 28px rgba(37, 99, 235, 0.4);
}

.btn-android {
  background: var(--gradient-green);
  color: #000;
  font-weight: 700;
  box-shadow: var(--shadow-green);
  animation: pulseGreen 2.5s infinite;
  position: relative;
  overflow: hidden;
}
.btn-android::before {
  content: "";
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: linear-gradient(45deg, transparent 40%, rgba(255,255,255,0.15) 50%, transparent 60%);
  animation: shimmer 3s infinite;
}
.btn-android:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 32px rgba(61, 220, 132, 0.5);
}

.btn-gold {
  background: var(--gradient-gold);
  color: #000;
  font-weight: 700;
}
.btn-gold:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 28px rgba(245, 158, 11, 0.4);
}

.btn-purple {
  background: var(--gradient-purple);
  color: #fff;
  box-shadow: var(--shadow-purple);
}
.btn-purple:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 28px rgba(139, 92, 246, 0.4);
}

.btn-outline {
  background: transparent;
  border: 2px solid var(--weex-blue);
  color: var(--weex-blue-light);
}
.btn-outline:hover {
  background: var(--weex-blue);
  color: #fff;
}

.btn-lg { padding: 16px 36px; font-size: 1.05rem; border-radius: var(--radius-md); }
.btn-xl { padding: 18px 44px; font-size: 1.15rem; border-radius: var(--radius-lg); }

.reveal.visible .btn-android { animation: pulseGreen 2.5s infinite; }

/* ==========================================
   Hero Section
   ========================================== */
.hero {
  background: var(--gradient-hero);
  padding: 80px 0 100px;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: "";
  position: absolute;
  top: -20%;
  right: -10%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(37, 99, 235, 0.08) 0%, transparent 70%);
  border-radius: 50%;
}
.hero::after {
  content: "";
  position: absolute;
  bottom: -10%;
  left: -5%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(61, 220, 132, 0.06) 0%, transparent 70%);
  border-radius: 50%;
}

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

.hero-content h1 {
  font-size: 2.8rem;
  font-weight: 800;
  line-height: 1.25;
  margin-bottom: 20px;
  background: linear-gradient(135deg, #fff 0%, var(--weex-blue-light) 40%, var(--android-green) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-content .hero-subtitle {
  font-size: 1.15rem;
  color: var(--text-secondary);
  margin-bottom: 12px;
}
.hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 28px;
}
.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  background: rgba(37, 99, 235, 0.12);
  border: 1px solid rgba(37, 99, 235, 0.2);
  color: var(--weex-blue-light);
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 500;
}
.hero-tag.green {
  background: rgba(61, 220, 132, 0.1);
  border-color: rgba(61, 220, 132, 0.2);
  color: var(--android-green);
}
.hero-tag.gold {
  background: rgba(245, 158, 11, 0.1);
  border-color: rgba(245, 158, 11, 0.2);
  color: var(--gold-light);
}
.hero-tag.purple {
  background: rgba(139, 92, 246, 0.1);
  border-color: rgba(139, 92, 246, 0.2);
  color: var(--secure-purple-light);
}

.hero-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.hero-visual {
  display: flex;
  align-items: center;
  justify-content: center;
}
.hero-phone-mock {
  position: relative;
  width: 280px;
}
.hero-phone-mock img {
  border-radius: 28px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
}
.android-badge {
  position: absolute;
  top: -10px;
  right: -10px;
  width: 60px;
  height: 60px;
  background: var(--gradient-green);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  animation: androidBounce 3s ease-in-out infinite;
  box-shadow: var(--shadow-green);
}

/* ==========================================
   Section 通用
   ========================================== */
.section {
  padding: 80px 0;
}
.section-alt {
  background: var(--bg-card);
}
.section-header {
  text-align: center;
  margin-bottom: 56px;
}
.section-header h2 {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 12px;
}
.section-header p {
  font-size: 1.05rem;
  color: var(--text-secondary);
  max-width: 640px;
  margin: 0 auto;
}

/* ==========================================
   Features 6大优势
   ========================================== */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.feature-card {
  background: var(--gradient-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 32px 24px;
  text-align: center;
  transition: all var(--transition-base);
}
.feature-card:hover {
  transform: translateY(-6px);
  border-color: var(--weex-blue);
  box-shadow: 0 12px 40px rgba(37, 99, 235, 0.12);
}

.feature-icon {
  width: 64px;
  height: 64px;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  margin: 0 auto 18px;
}
.feature-icon.blue { background: rgba(37, 99, 235, 0.15); color: var(--weex-blue-light); }
.feature-icon.green { background: rgba(61, 220, 132, 0.15); color: var(--android-green); }
.feature-icon.gold { background: rgba(245, 158, 11, 0.12); color: var(--gold-light); }
.feature-icon.purple { background: rgba(139, 92, 246, 0.12); color: var(--secure-purple-light); }

.feature-card h3 {
  font-size: 1.2rem;
  font-weight: 600;
  margin-bottom: 10px;
}
.feature-card p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ==========================================
   Stats 数据统计
   ========================================== */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.stat-item {
  text-align: center;
  padding: 28px 16px;
  background: var(--gradient-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
}
.stat-number {
  font-size: 2.2rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--weex-blue-light), var(--android-green));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.stat-label {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-top: 6px;
}

/* ==========================================
   行情表格
   ========================================== */
.market-table-wrap {
  overflow-x: auto;
}
.market-table {
  width: 100%;
  border-collapse: collapse;
  border-radius: var(--radius-md);
  overflow: hidden;
}
.market-table thead {
  background: rgba(37, 99, 235, 0.1);
}
.market-table th {
  padding: 14px 16px;
  text-align: left;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.market-table td {
  padding: 14px 16px;
  font-size: 0.95rem;
  border-bottom: 1px solid var(--border-subtle);
}
.market-table tbody tr {
  transition: background var(--transition-fast);
}
.market-table tbody tr:hover {
  background: rgba(37, 99, 235, 0.04);
}
.price-up { color: var(--android-green); font-weight: 600; }
.price-down { color: #ef4444; font-weight: 600; }

/* ==========================================
   CTA
   ========================================== */
.cta-section {
  background: var(--gradient-hero);
  text-align: center;
  padding: 80px 0;
  position: relative;
  overflow: hidden;
}
.cta-section h2 {
  font-size: 2.2rem;
  font-weight: 700;
  margin-bottom: 16px;
}
.cta-section p {
  color: var(--text-secondary);
  font-size: 1.05rem;
  margin-bottom: 32px;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}
.cta-buttons {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 14px;
}

/* ==========================================
   About 页面
   ========================================== */
.about-hero {
  background: var(--gradient-hero);
  padding: 80px 0 60px;
  text-align: center;
}
.about-hero h1 {
  font-size: 2.5rem;
  font-weight: 800;
  margin-bottom: 14px;
}
.about-hero p {
  font-size: 1.1rem;
  color: var(--text-secondary);
  max-width: 700px;
  margin: 0 auto;
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
  padding: 60px 0;
}
.about-text h2 {
  font-size: 1.8rem;
  font-weight: 700;
  margin-bottom: 16px;
  color: var(--weex-blue-light);
}
.about-text p {
  color: var(--text-secondary);
  margin-bottom: 14px;
  line-height: 1.8;
}
.about-image img {
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
}

.values-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 40px;
}
.value-card {
  background: var(--gradient-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 28px 20px;
  text-align: center;
}
.value-card .value-icon {
  font-size: 2rem;
  margin-bottom: 14px;
}
.value-card h4 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 8px;
}
.value-card p {
  font-size: 0.88rem;
  color: var(--text-muted);
}

.timeline {
  position: relative;
  padding-left: 32px;
  border-left: 2px solid var(--border-subtle);
}
.timeline-item {
  position: relative;
  padding-bottom: 32px;
}
.timeline-item::before {
  content: "";
  position: absolute;
  left: -40px;
  top: 4px;
  width: 14px;
  height: 14px;
  background: var(--weex-blue);
  border-radius: 50%;
  border: 3px solid var(--bg-dark);
}
.timeline-year {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--weex-blue-light);
  margin-bottom: 4px;
}
.timeline-text {
  font-size: 0.95rem;
  color: var(--text-secondary);
}

/* ==========================================
   Services 页面
   ========================================== */
.services-hero {
  background: var(--gradient-hero);
  padding: 80px 0 60px;
  text-align: center;
}
.services-hero h1 {
  font-size: 2.5rem;
  font-weight: 800;
  margin-bottom: 14px;
}
.services-hero p {
  font-size: 1.1rem;
  color: var(--text-secondary);
  max-width: 700px;
  margin: 0 auto;
}

.service-detail-card {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 28px;
  align-items: start;
  background: var(--gradient-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 36px 28px;
  margin-bottom: 20px;
  transition: all var(--transition-base);
}
.service-detail-card:hover {
  border-color: var(--weex-blue);
  box-shadow: 0 8px 30px rgba(37, 99, 235, 0.1);
  transform: translateY(-3px);
}
.service-detail-icon {
  width: 100px;
  height: 100px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.4rem;
}
.service-detail-icon.blue { background: rgba(37, 99, 235, 0.15); }
.service-detail-icon.green { background: rgba(61, 220, 132, 0.12); }
.service-detail-icon.gold { background: rgba(245, 158, 11, 0.12); }
.service-detail-icon.purple { background: rgba(139, 92, 246, 0.12); }

.service-detail-body h3 {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 10px;
}
.service-detail-body p {
  font-size: 0.95rem;
  color: var(--text-secondary);
  margin-bottom: 12px;
}
.service-features-inline {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.service-feature-tag {
  background: rgba(37, 99, 235, 0.08);
  border: 1px solid var(--border-subtle);
  padding: 4px 12px;
  border-radius: 14px;
  font-size: 0.8rem;
  color: var(--text-secondary);
}

/* ==========================================
   FAQ 页面
   ========================================== */
.faq-hero {
  background: var(--gradient-hero);
  padding: 80px 0 60px;
  text-align: center;
}
.faq-hero h1 {
  font-size: 2.5rem;
  font-weight: 800;
  margin-bottom: 14px;
}

.faq-list {
  max-width: 860px;
  margin: 0 auto;
}
.faq-item {
  background: var(--gradient-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  margin-bottom: 14px;
  overflow: hidden;
  transition: border-color var(--transition-fast);
}
.faq-item:hover {
  border-color: var(--weex-blue);
}

.faq-item summary {
  padding: 20px 24px;
  font-weight: 600;
  font-size: 1.05rem;
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  user-select: none;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: "+";
  font-size: 1.4rem;
  font-weight: 300;
  color: var(--weex-blue-light);
  transition: transform var(--transition-fast);
}
.faq-item[open] summary::after {
  content: "−";
  transform: rotate(180deg);
}

.faq-answer {
  padding: 0 24px 20px;
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.75;
}

/* ==========================================
   Contact 页面
   ========================================== */
.contact-hero {
  background: var(--gradient-hero);
  padding: 80px 0 60px;
  text-align: center;
}
.contact-hero h1 {
  font-size: 2.5rem;
  font-weight: 800;
  margin-bottom: 14px;
}
.contact-hero p {
  font-size: 1.1rem;
  color: var(--text-secondary);
  max-width: 700px;
  margin: 0 auto;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 18px;
}
.form-group label {
  display: block;
  font-size: 0.9rem;
  font-weight: 500;
  margin-bottom: 6px;
  color: var(--text-secondary);
}
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 0.95rem;
  font-family: inherit;
  transition: border-color var(--transition-fast);
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--weex-blue);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.contact-info-cards {
  display: flex;
  flex-direction: column;
  gap: 18px;
}
.contact-info-card {
  background: var(--gradient-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 24px;
  display: flex;
  gap: 16px;
  align-items: flex-start;
}
.contact-info-icon {
  font-size: 1.6rem;
  width: 48px;
  height: 48px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.contact-info-icon.blue { background: rgba(37, 99, 235, 0.15); }
.contact-info-icon.green { background: rgba(61, 220, 132, 0.12); }
.contact-info-icon.purple { background: rgba(139, 92, 246, 0.12); }
.contact-info-icon.gold { background: rgba(245, 158, 11, 0.12); }
.contact-info-text h4 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 4px;
}
.contact-info-text p {
  font-size: 0.88rem;
  color: var(--text-muted);
}

/* ==========================================
   页脚
   ========================================== */
.site-footer {
  background: #080b14;
  border-top: 1px solid var(--border-color);
  padding: 48px 0 28px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 36px;
}
.footer-col h4 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 16px;
  color: var(--text-primary);
}
.footer-col ul li {
  margin-bottom: 8px;
}
.footer-col ul li a {
  color: var(--text-muted);
  font-size: 0.88rem;
  transition: color var(--transition-fast);
}
.footer-col ul li a:hover { color: var(--weex-blue-light); }
.footer-col p {
  color: var(--text-muted);
  font-size: 0.88rem;
  line-height: 1.6;
}
.footer-bottom {
  text-align: center;
  padding-top: 24px;
  border-top: 1px solid var(--border-subtle);
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* ==========================================
   响应式
   ========================================== */
@media (max-width: 1024px) {
  .hero-inner {
    grid-template-columns: 1fr;
    text-align: center;
  }
  .hero-visual { order: -1; }
  .hero-buttons { justify-content: center; }
  .hero-content h1 { font-size: 2.2rem; }
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .about-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .values-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .main-nav { display: none; }
  .mobile-menu-toggle { display: flex; }
  .main-nav.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: rgba(12, 15, 26, 0.98);
    backdrop-filter: blur(16px);
    padding: 20px;
    gap: 16px;
    border-bottom: 1px solid var(--border-color);
  }
  .hero { padding: 50px 0 60px; }
  .hero-content h1 { font-size: 1.8rem; }
  .features-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .service-detail-card { grid-template-columns: 1fr; text-align: center; }
  .service-detail-icon { margin: 0 auto; }
  .section { padding: 50px 0; }
  .values-grid { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
  .cta-section h2 { font-size: 1.5rem; }
  .footer-grid { grid-template-columns: 1fr; }
}