/* ============================================
   瀚算云擎 - 科技感渐变蓝主题样式
   合肥敏华信息科技有限公司 旗下品牌
   ============================================ */

/* === CSS Variables === */
:root {
  /* 主色系 - 渐变蓝（匹配LOGO） */
  --blue-deep: #0a1628;
  --blue-dark: #0d2137;
  --blue-mid: #143d5c;
  --blue-primary: #1e6091;
  --blue-bright: #2980b9;
  --cyan: #00b4d8;
  --cyan-light: #00d4ff;
  --cyan-glow: #48e5ff;

  /* 渐变色 */
  --gradient-main: linear-gradient(135deg, #0d2137 0%, #143d5c 30%, #1e6091 60%, #00b4d8 100%);
  --gradient-hero: linear-gradient(135deg, #0a1628 0%, #102a4a 40%, #164a78 70%, #0d4a8f 100%);
  --gradient-accent: linear-gradient(135deg, #1e6091, #00b4d8, #00d4ff);
  --gradient-card: linear-gradient(145deg, rgba(13,33,55,0.9) 0%, rgba(20,61,92,0.6) 100%);
  --gradient-border: linear-gradient(135deg, rgba(0,180,216,0.4), rgba(0,212,255,0.15), rgba(30,96,145,0.4));
  --gradient-text: linear-gradient(135deg, #00d4ff, #00b4d8, #2980b9);

  /* 光效 */
  --glow-cyan: 0 0 20px rgba(0,212,255,0.3), 0 0 60px rgba(0,212,255,0.1);
  --glow-blue: 0 0 25px rgba(30,96,145,0.4), 0 0 80px rgba(30,96,145,0.15);
  --glow-strong: 0 0 30px rgba(0,212,255,0.5), 0 0 80px rgba(0,180,216,0.3);

  /* 布局 */
  --max-width: 1200px;
  --nav-height: 72px;
  --section-padding: 100px 0;

  /* 字体 */
  --font-cn: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
  --font-en: 'Inter', 'SF Pro Display', -apple-system, sans-serif;
}

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

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

body {
  font-family: var(--font-cn);
  background-color: var(--blue-deep);
  color: #e0e8f0;
  line-height: 1.7;
  overflow-x: hidden;
  position: relative;
}

/* 背景科技网格 */
body::before {
  content: '';
  position: fixed;
  top: 0; left: 0; width: 100%; height: 100%;
  background:
    radial-gradient(ellipse at 20% 50%, rgba(0,180,216,0.04) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 20%, rgba(30,96,145,0.05) 0%, transparent 50%),
    radial-gradient(ellipse at 50% 80%, rgba(0,212,255,0.03) 0%, transparent 50%);
  pointer-events: none;
  z-index: 0;
}

/* 网格线背景 */
body::after {
  content: '';
  position: fixed;
  top: 0; left: 0; width: 100%; height: 100%;
  background-image:
    linear-gradient(rgba(0,180,216,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,180,216,0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
  z-index: 0;
}

a { text-decoration: none; color: inherit; transition: all 0.3s ease; }
ul, ol { list-style: none; }
img { max-width: 100%; display: block; }

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
  z-index: 1;
}

/* === 流光线条动画 === */
@keyframes flowLine {
  0% { transform: translateX(-100%); opacity: 0; }
  10% { opacity: 1; }
  90% { opacity: 1; }
  100% { transform: translateX(200vw); opacity: 0; }
}

@keyframes pulseGlow {
  0%, 100% { box-shadow: var(--glow-cyan); }
  50% { box-shadow: var(--glow-strong); }
}

@keyframes floatUp {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}

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

@keyframes rotateSlow {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

@keyframes scanline {
  0% { top: -10%; }
  100% { top: 110%; }
}

@keyframes particleFloat {
  0%, 100% { transform: translate(0, 0) scale(1); opacity: 0.4; }
  25% { transform: translate(10px, -20px) scale(1.1); opacity: 0.8; }
  50% { transform: translate(-5px, -35px) scale(0.9); opacity: 0.5; }
  75% { transform: translate(15px, -15px) scale(1.05); opacity: 0.7; }
}

@keyframes borderGlow {
  0%, 100% { border-color: rgba(0,180,216,0.3); }
  50% { border-color: rgba(0,212,255,0.6); }
}

@keyframes textReveal {
  from { clip-path: inset(0 100% 0 0); opacity: 0; }
  to { clip-path: inset(0 0 0 0); opacity: 1; }
}

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

@keyframes beamMove {
  0% { left: -5%; top: 0; }
  25% { left: 45%; top: 10%; }
  50% { left: 85%; top: -5%; }
  75% { left: 55%; top: 15%; }
  100% { left: -5%; top: 0; }
}

/* === 导航栏 === */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--nav-height);
  z-index: 1000;
  backdrop-filter: blur(20px) saturate(1.5);
  -webkit-backdrop-filter: blur(20px) saturate(1.5);
  background: rgba(10,22,40,0.75);
  border-bottom: 1px solid transparent;
  border-image: linear-gradient(90deg, transparent, rgba(0,180,216,0.2), transparent) 1;
  transition: all 0.4s ease;
}

.navbar.scrolled {
  background: rgba(10,22,40,0.92);
  border-bottom-color: rgba(0,180,216,0.15);
  box-shadow: 0 4px 30px rgba(0,0,0,0.3), 0 0 20px rgba(0,180,216,0.05);
}

.nav-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo-group {
  display: flex;
  align-items: center;
  gap: 14px;
}

.logo-img {
  height: 42px;
  width: auto;
  filter: drop-shadow(0 0 12px rgba(0,212,255,0.25));
  transition: filter 0.3s ease;
}
.logo-img:hover { filter: drop-shadow(0 0 20px rgba(0,212,255,0.5)); }

.logo-text {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 2px;
  background: var(--gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-links {
  display: flex;
  gap: 6px;
  align-items: center;
}

.nav-links li a {
  display: block;
  padding: 8px 18px;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 500;
  color: #b8c8dc;
  position: relative;
  letter-spacing: 0.5px;
  transition: all 0.3s ease;
}

.nav-links li a:hover,
.nav-links li a.active {
  color: var(--cyan-light);
  background: rgba(0,180,216,0.08);
}

.nav-links li a.active::after {
  content: '';
  position: absolute;
  bottom: 2px; left: 18px; right: 18px;
  height: 2px;
  background: var(--gradient-accent);
  border-radius: 1px;
  animation: shimmer 2s ease-in-out infinite;
  background-size: 200% auto;
}

.mobile-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 8px;
  border: none;
  background: none;
}
.mobile-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--cyan);
  border-radius: 2px;
  transition: all 0.3s ease;
}

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

/* 流光束效果 */
.hero-beam {
  position: absolute;
  width: 300px;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--cyan-light), var(--cyan), transparent);
  filter: blur(0.5px);
  opacity: 0.5;
  animation: beamMove 12s ease-in-out infinite;
  z-index: 0;
}
.hero-beam:nth-child(2) {
  width: 200px; top: 20%; animation-delay: -4s; animation-duration: 15s; opacity: 0.3;
}
.hero-beam:nth-child(3) {
  width: 250px; top: 60%; animation-delay: -8s; animation-duration: 18s; opacity: 0.25;
}

/* 扫描线 */
.hero-scanline {
  position: absolute;
  left: 0; width: 100%; height: 3px;
  background: linear-gradient(90deg, transparent, var(--cyan-glow), transparent);
  filter: blur(1px);
  opacity: 0.4;
  animation: scanline 4s linear infinite;
  z-index: 0;
}

/* 浮动粒子 */
.hero-particles {
  position: absolute;
  inset: 0;
  overflow: hidden;
  z-index: 0;
}
.particle {
  position: absolute;
  width: 3px; height: 3px;
  background: var(--cyan-light);
  border-radius: 50%;
  box-shadow: 0 0 6px var(--cyan-glow);
  animation: particleFloat 6s ease-in-out infinite;
}
.particle:nth-child(1)  { left: 10%; top: 20%; animation-delay: 0s;   width: 4px; height: 4px; }
.particle:nth-child(2)  { left: 25%; top: 65%; animation-delay: -1s;  width: 2px; height: 2px; }
.particle:nth-child(3)  { left: 45%; top: 15%; animation-delay: -2s;  width: 3px; height: 3px; }
.particle:nth-child(4)  { left: 65%; top: 55%; animation-delay: -3s;  width: 5px; height: 5px; }
.particle:nth-child(5)  { left: 80%; top: 30%; animation-delay: -4s;  width: 2px; height: 2px; }
.particle:nth-child(6)  { left: 15%; top: 80%; animation-delay: -2.5s;width: 3px; height: 3px; }
.particle:nth-child(7)  { left: 55%; top: 75%; animation-delay: -1.5s;width: 4px; height: 4px; }
.particle:nth-child(8)  { left: 90%; top: 60%; animation-delay: -0.5s;width: 2px; height: 2px; }
.particle:nth-child(9)  { left: 35%; top: 40%; animation-delay: -3.5s;width: 3px; height: 3px; }
.particle:nth-child(10){ left: 70%; top: 10%; animation-delay: -4.5s;width: 4px; height: 4px; }

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: 40px 0;
  width: 100%;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 20px;
  border-radius: 50px;
  border: 1px solid rgba(0,180,216,0.25);
  background: rgba(0,180,216,0.06);
  color: var(--cyan-light);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 32px;
  animation: fadeInUp 0.8s ease;
}
.hero-badge::before {
  content: '';
  width: 8px; height: 8px;
  background: var(--cyan-light);
  border-radius: 50%;
  box-shadow: 0 0 10px var(--cyan-glow);
  animation: pulseGlow 2s infinite;
}

.hero-title {
  font-size: clamp(36px, 5.5vw, 64px);
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 24px;
  letter-spacing: 2px;
  animation: fadeInUp 0.8s ease 0.15s both;
}
.hero-title .highlight {
  display: block;
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-size: clamp(44px, 6.5vw, 76px);
  position: relative;
}
.hero-title .highlight::after {
  content: '';
  position: absolute;
  bottom: 4px; left: 0; right: 0;
  height: 3px;
  background: var(--gradient-accent);
  border-radius: 2px;
  opacity: 0.6;
}

.hero-subtitle {
  font-size: clamp(16px, 1.8vw, 20px);
  color: #8ba3be;
  max-width: 650px;
  margin: 0 auto 44px;
  line-height: 1.8;
  animation: fadeInUp 0.8s ease 0.3s both;
}

.hero-buttons {
  display: flex;
  gap: 18px;
  justify-content: center;
  flex-wrap: wrap;
  animation: fadeInUp 0.8s ease 0.45s both;
}

/* 按钮通用样式 */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 34px;
  border-radius: 10px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.35s ease;
  border: none;
  position: relative;
  overflow: hidden;
  letter-spacing: 1px;
}

.btn-primary {
  background: var(--gradient-accent);
  color: #fff;
  box-shadow: var(--glow-cyan);
}
.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: var(--glow-strong);
}
.btn-primary::before {
  content: '';
  position: absolute;
  top: 0; left: -100%; width: 100%; height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.15), transparent);
  transition: left 0.5s ease;
}
.btn-primary:hover::before { left: 100%; }

.btn-outline {
  background: transparent;
  color: var(--cyan-light);
  border: 1px solid rgba(0,180,216,0.4);
  backdrop-filter: blur(4px);
}
.btn-outline:hover {
  background: rgba(0,180,216,0.08);
  border-color: var(--cyan-light);
  transform: translateY(-3px);
  box-shadow: var(--glow-cyan);
}

/* Hero 底部装饰数据 */
.hero-stats {
  display: flex;
  justify-content: center;
  gap: 48px;
  margin-top: 64px;
  padding-top: 40px;
  border-top: 1px solid rgba(0,180,216,0.1);
  animation: fadeInUp 0.8s ease 0.6s both;
}
.stat-item { text-align: center; }
.stat-number {
  font-size: 38px;
  font-weight: 800;
  font-family: var(--font-en);
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.2;
}
.stat-label {
  font-size: 13px;
  color: #6b82a0;
  margin-top: 4px;
  letter-spacing: 1px;
}

/* === Section 通用 === */
.section {
  padding: var(--section-padding);
  position: relative;
  z-index: 1;
}

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

.section-tag {
  display: inline-block;
  padding: 6px 18px;
  border-radius: 50px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--cyan-light);
  border: 1px solid rgba(0,180,216,0.25);
  background: rgba(0,180,216,0.06);
  margin-bottom: 18px;
}

.section-title {
  font-size: clamp(28px, 3.5vw, 42px);
  font-weight: 800;
  letter-spacing: 1px;
  margin-bottom: 16px;
  color: #fff;
}
.section-title span {
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-desc {
  font-size: 16px;
  color: #7a93b0;
  max-width: 600px;
  margin: 0 auto;
  line-height: 1.8;
}

/* === GEO 核心业务区 === */
.geo-section {
  background: linear-gradient(180deg, var(--blue-deep) 0%, rgba(13,33,55,0.95) 50%, var(--blue-deep) 100%);
  position: relative;
  overflow: hidden;
}
/* GEO 区背景网格增强 */
.geo-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 30% 40%, rgba(0,180,216,0.06) 0%, transparent 40%),
    radial-gradient(circle at 70% 60%, rgba(0,212,255,0.04) 0%, transparent 40%);
  pointer-events: none;
}

.geo-showcase {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.geo-visual {
  position: relative;
  aspect-ratio: 4/3;
  border-radius: 20px;
  overflow: hidden;
  border: 1px solid rgba(0,180,216,0.2);
  background: var(--gradient-card);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--glow-blue);
}
.geo-visual-inner {
  text-align: center;
  padding: 40px;
}
.geo-icon-circle {
  width: 140px; height: 140px;
  margin: 0 auto 28px;
  border-radius: 50%;
  border: 2px solid rgba(0,180,216,0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  animation: floatUp 4s ease-in-out infinite, pulseGlow 3s ease-in-out infinite;
}
.geo-icon-circle::before,
.geo-icon-circle::after {
  content: '';
  position: absolute;
  border-radius: 50%;
  border: 1px solid rgba(0,212,255,0.15);
}
.geo-icon-circle::before {
  width: 170px; height: 170px;
  animation: rotateSlow 15s linear infinite reverse;
}
.geo-icon-circle::after {
  width: 200px; height: 200px;
  animation: rotateSlow 20s linear infinite;
}
.geo-icon-text {
  font-size: 52px;
  font-weight: 900;
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-family: var(--font-en);
}
.geo-visual-title {
  font-size: 26px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 8px;
}
.geo-visual-desc {
  font-size: 14px;
  color: #6b82a0;
}

.geo-info h3 {
  font-size: 34px;
  font-weight: 800;
  color: #fff;
  margin-bottom: 20px;
  line-height: 1.3;
}
.geo-info h3 span {
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.geo-info > p {
  font-size: 16px;
  color: #8ba3be;
  margin-bottom: 36px;
  line-height: 1.8;
}

.geo-features {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}
.geo-feature-item {
  padding: 20px 22px;
  border-radius: 14px;
  border: 1px solid rgba(0,180,216,0.12);
  background: rgba(10,22,40,0.6);
  transition: all 0.35s ease;
}
.geo-feature-item:hover {
  border-color: rgba(0,180,216,0.35);
  background: rgba(0,180,216,0.06);
  transform: translateY(-4px);
  box-shadow: var(--glow-cyan);
}
.geo-feature-item .icon {
  font-size: 24px;
  margin-bottom: 10px;
}
.geo-feature-item h4 {
  font-size: 15px;
  font-weight: 700;
  color: #e0e8f0;
  margin-bottom: 6px;
}
.geo-feature-item p {
  font-size: 13px;
  color: #6b82a0;
  line-height: 1.6;
}

/* === 业务矩阵 === */
.business-section {
  background: var(--blue-deep);
}

.business-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 22px;
}

.business-card {
  position: relative;
  padding: 32px 26px;
  border-radius: 18px;
  border: 1px solid rgba(0,180,216,0.12);
  background: var(--gradient-card);
  backdrop-filter: blur(10px);
  transition: all 0.4s cubic-bezier(0.23,1,0.32,1);
  overflow: hidden;
}
.business-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: var(--gradient-accent);
  opacity: 0;
  transition: opacity 0.4s ease;
}
.business-card:hover {
  border-color: rgba(0,180,216,0.35);
  transform: translateY(-8px);
  box-shadow: var(--glow-blue), 0 20px 40px rgba(0,0,0,0.2);
}
.business-card:hover::before { opacity: 1; }

.card-icon {
  width: 56px; height: 56px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 26px;
  margin-bottom: 20px;
  background: linear-gradient(135deg, rgba(0,180,216,0.15), rgba(0,212,255,0.08));
  border: 1px solid rgba(0,180,216,0.2);
  transition: all 0.3s ease;
}
.business-card:hover .card-icon {
  background: linear-gradient(135deg, rgba(0,180,216,0.25), rgba(0,212,255,0.12));
  box-shadow: var(--glow-cyan);
  transform: scale(1.05);
}

.business-card h3 {
  font-size: 17px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 10px;
  letter-spacing: 0.5px;
}

.business-card p {
  font-size: 14px;
  color: #7a93b0;
  line-height: 1.7;
}

/* 核心业务标记 */
.business-card.core-business {
  border-color: rgba(0,212,255,0.3);
  background: linear-gradient(145deg, rgba(13,33,55,0.95) 0%, rgba(0,180,216,0.08) 100%);
}
.business-card.core-business::before { opacity: 1; }
.business-card.core-business .card-icon {
  background: linear-gradient(135deg, rgba(0,180,216,0.3), rgba(0,212,255,0.15));
  animation: pulseGlow 3s infinite;
}
.core-badge {
  display: inline-block;
  padding: 3px 12px;
  border-radius: 50px;
  font-size: 11px;
  font-weight: 700;
  color: var(--cyan-light);
  background: rgba(0,180,216,0.15);
  border: 1px solid rgba(0,180,216,0.3);
  margin-bottom: 14px;
  letter-spacing: 1px;
}

/* === 流程/步骤 === */
.process-section {
  background: linear-gradient(180deg, var(--blue-deep) 0%, rgba(13,33,55,0.98) 100%);
  position: relative;
}
.process-section::before {
  content: '';
  position: absolute;
  top: 0; left: 50%;
  transform: translateX(-50%);
  width: 80%; height: 1px;
  background: linear-gradient(90deg, transparent, rgba(0,180,216,0.15), transparent);
}

.process-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
  position: relative;
}
/* 连接线 */
.process-steps::before {
  content: '';
  position: absolute;
  top: 56px;
  left: calc(12.5% + 28px);
  right: calc(12.5% + 28px);
  height: 1px;
  background: linear-gradient(90deg, rgba(0,180,216,0.1), rgba(0,180,216,0.4), rgba(0,180,216,0.1));
}

.process-step {
  text-align: center;
  position: relative;
  padding: 20px 16px;
}
.step-num {
  width: 56px; height: 56px;
  border-radius: 50%;
  margin: 0 auto 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  font-weight: 900;
  font-family: var(--font-en);
  color: var(--cyan-light);
  border: 2px solid rgba(0,180,216,0.3);
  background: rgba(10,22,40,0.8);
  position: relative;
  z-index: 2;
  transition: all 0.3s ease;
}
.process-step:hover .step-num {
  background: rgba(0,180,216,0.15);
  box-shadow: var(--glow-cyan);
  transform: scale(1.1);
}
.step-num .num-bg {
  position: absolute;
  inset: -3px;
  border-radius: 50%;
  border: 1px dashed rgba(0,180,216,0.2);
  animation: rotateSlow 20s linear infinite;
}

.process-step h4 {
  font-size: 17px;
  font-weight: 700;
  color: #e0e8f0;
  margin-bottom: 8px;
}
.process-step p {
  font-size: 13px;
  color: #6b82a0;
  line-height: 1.6;
}

/* === CTA横幅 === */
.cta-banner {
  padding: 80px 0;
  position: relative;
  overflow: hidden;
  background: var(--blue-dark);
  text-align: center;
}
.cta-banner::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 30% 50%, rgba(0,180,216,0.07) 0%, transparent 50%),
    radial-gradient(ellipse at 70% 50%, rgba(0,212,255,0.05) 0%, transparent 50%);
}
.cta-beam {
  position: absolute;
  top: 0; left: 0; width: 100%; height: 2px;
  background: linear-gradient(90deg, transparent 10%, var(--cyan-light) 50%, transparent 90%);
  opacity: 0.4;
}
.cta-beam.bottom { top: auto; bottom: 0; }

.cta-banner .container { position: relative; z-index: 2; }
.cta-title {
  font-size: clamp(28px, 3.5vw, 40px);
  font-weight: 800;
  color: #fff;
  margin-bottom: 16px;
}
.cta-title span {
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.cta-desc {
  font-size: 16px;
  color: #8ba3be;
  margin-bottom: 36px;
  max-width: 520px;
  margin-left: auto;
  margin-right: auto;
}

/* === 关于我们 === */
.about-intro {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}
.about-visual {
  position: relative;
  border-radius: 20px;
  overflow: hidden;
  border: 1px solid rgba(0,180,216,0.15);
  background: var(--gradient-card);
  aspect-ratio: 4/3;
  display: flex;
  align-items: center;
  justify-content: center;
}
.about-logo-display {
  text-align: center;
  padding: 40px;
}
.about-logo-img {
  width: 160px;
  margin: 0 auto 20px;
  filter: drop-shadow(0 0 20px rgba(0,212,255,0.3));
}
.about-brand-name {
  font-size: 28px;
  font-weight: 800;
  background: var(--gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: 4px;
}
.about-company {
  font-size: 14px;
  color: #6b82a0;
  margin-top: 8px;
}

.about-text h3 {
  font-size: 30px;
  font-weight: 800;
  color: #fff;
  margin-bottom: 20px;
  line-height: 1.4;
}
.about-text > p {
  font-size: 15px;
  color: #8ba3be;
  line-height: 1.9;
  margin-bottom: 28px;
}

/* 价值观三栏 */
.values-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 56px;
  padding-top: 48px;
  border-top: 1px solid rgba(0,180,216,0.1);
}
.value-card {
  padding: 32px 26px;
  border-radius: 16px;
  border: 1px solid rgba(0,180,216,0.1);
  background: rgba(10,22,40,0.5);
  text-align: center;
  transition: all 0.3s ease;
}
.value-card:hover {
  border-color: rgba(0,180,216,0.3);
  background: rgba(0,180,216,0.05);
  transform: translateY(-4px);
}
.value-icon {
  font-size: 36px;
  margin-bottom: 16px;
}
.value-card h4 {
  font-size: 18px;
  font-weight: 700;
  color: #e0e8f0;
  margin-bottom: 10px;
}
.value-card p {
  font-size: 14px;
  color: #6b82a0;
  line-height: 1.7;
}

/* 数据展示条 */
.data-bar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-top: 56px;
  padding: 40px;
  border-radius: 18px;
  border: 1px solid rgba(0,180,216,0.12);
  background: var(--gradient-card);
}
.data-item { text-align: center; }
.data-num {
  font-size: 36px;
  font-weight: 900;
  font-family: var(--font-en);
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.data-label {
  font-size: 13px;
  color: #6b82a0;
  margin-top: 6px;
}

/* === 产品服务详情 === */
.services-detail {
  display: flex;
  flex-direction: column;
  gap: 72px;
}

.service-block {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 56px;
  align-items: center;
  padding: 48px;
  border-radius: 20px;
  border: 1px solid rgba(0,180,216,0.1);
  background: rgba(10,22,40,0.4);
  transition: all 0.3s ease;
}
.service-block:hover {
  border-color: rgba(0,180,216,0.25);
  background: rgba(10,22,40,0.6);
}
.service-block.reverse {
  direction: rtl;
}
.service-block.reverse > * { direction: ltr; }

.service-visual {
  aspect-ratio: 16/10;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 64px;
  background: var(--gradient-card);
  border: 1px solid rgba(0,180,216,0.12);
  position: relative;
  overflow: hidden;
}
.service-visual::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at center, rgba(0,180,216,0.05), transparent 70%);
}

.service-detail h3 {
  font-size: 28px;
  font-weight: 800;
  color: #fff;
  margin-bottom: 14px;
}
.service-detail h3 .tag {
  font-size: 12px;
  padding: 3px 12px;
  border-radius: 50px;
  vertical-align: middle;
  margin-left: 10px;
  color: var(--cyan-light);
  background: rgba(0,180,216,0.12);
  border: 1px solid rgba(0,180,216,0.25);
  font-weight: 600;
}
.service-detail > p {
  font-size: 15px;
  color: #8ba3be;
  line-height: 1.8;
  margin-bottom: 24px;
}
.service-list {
  list-style: none;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}
.service-list li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: #a0b4cc;
  padding: 6px 0;
}
.service-list li::before {
  content: '';
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--cyan);
  flex-shrink: 0;
  box-shadow: 0 0 6px rgba(0,180,216,0.4);
}

/* 套餐方案 */
.plans-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 64px;
}
.plan-card {
  border-radius: 18px;
  border: 1px solid rgba(0,180,216,0.12);
  background: var(--gradient-card);
  padding: 36px 28px;
  text-align: center;
  transition: all 0.35s ease;
  position: relative;
  overflow: hidden;
}
.plan-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--glow-blue);
}
.plan-card.featured {
  border-color: rgba(0,180,216,0.35);
  background: linear-gradient(145deg, rgba(13,33,55,0.97) 0%, rgba(0,180,216,0.06) 100%);
}
.plan-card.featured::before {
  content: '推荐';
  position: absolute;
  top: 16px; right: -24px;
  background: var(--gradient-accent);
  color: #fff;
  font-size: 11px;
  font-weight: 700;
  padding: 4px 36px;
  transform: rotate(45deg);
  letter-spacing: 1px;
}
.plan-name {
  font-size: 20px;
  font-weight: 800;
  color: #fff;
  margin-bottom: 6px;
}
.plan-price {
  font-size: 38px;
  font-weight: 900;
  font-family: var(--font-en);
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin: 16px 0;
}
.plan-price span {
  font-size: 14px;
  font-weight: 400;
  -webkit-text-fill-color: #6b82a0;
}
.plan-features {
  list-style: none;
  text-align: left;
  margin: 24px 0 28px;
}
.plan-features li {
  padding: 8px 0;
  font-size: 14px;
  color: #a0b4cc;
  display: flex;
  align-items: center;
  gap: 10px;
  border-bottom: 1px solid rgba(0,180,216,0.06);
}
.plan-features li:last-child { border-bottom: none; }
.plan-features li .check {
  color: var(--cyan);
  font-weight: 700;
  flex-shrink: 0;
}

/* === 联系我们 === */
.contact-layout {
  display: grid;
  grid-template-columns: 400px 1fr;
  gap: 40px;
}

.contact-info-panel {
  border-radius: 18px;
  border: 1px solid rgba(0,180,216,0.12);
  background: var(--gradient-card);
  padding: 36px 28px;
  height: fit-content;
}
.contact-info-panel h3 {
  font-size: 22px;
  font-weight: 800;
  color: #fff;
  margin-bottom: 28px;
}
.contact-method {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 16px 0;
  border-bottom: 1px solid rgba(0,180,216,0.08);
}
.contact-method:last-child { border-bottom: none; }
.contact-method .icon {
  width: 42px; height: 42px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  background: rgba(0,180,216,0.1);
  border: 1px solid rgba(0,180,216,0.15);
  flex-shrink: 0;
}
.contact-method h4 {
  font-size: 14px;
  font-weight: 700;
  color: #e0e8f0;
  margin-bottom: 4px;
}
.contact-method p {
  font-size: 13px;
  color: #7a93b0;
}

.contact-form-wrap {
  border-radius: 18px;
  border: 1px solid rgba(0,180,216,0.12);
  background: var(--gradient-card);
  padding: 36px;
}
.contact-form-wrap h3 {
  font-size: 22px;
  font-weight: 800;
  color: #fff;
  margin-bottom: 28px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}
.form-group {
  margin-bottom: 20px;
}
.form-group label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: #8ba3be;
  margin-bottom: 8px;
  letter-spacing: 0.5px;
}
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 13px 16px;
  border-radius: 10px;
  border: 1px solid rgba(0,180,216,0.15);
  background: rgba(10,22,40,0.6);
  color: #e0e8f0;
  font-size: 14px;
  font-family: inherit;
  outline: none;
  transition: all 0.3s ease;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--cyan);
  box-shadow: 0 0 0 3px rgba(0,180,216,0.1), var(--glow-cyan);
  background: rgba(10,22,40,0.9);
}
.form-group textarea {
  resize: vertical;
  min-height: 110px;
}
.form-group input::placeholder,
.form-group textarea::placeholder { color: #4a5d73; }
.form-submit {
  width: 100%;
  margin-top: 8px;
}

/* FAQ 折叠 */
.faq-section { margin-top: 72px; }
.faq-list { max-width: 800px; margin: 0 auto; }
.faq-item {
  border: 1px solid rgba(0,180,216,0.1);
  border-radius: 12px;
  margin-bottom: 12px;
  overflow: hidden;
  background: rgba(10,22,40,0.4);
  transition: all 0.3s ease;
}
.faq-item:hover { border-color: rgba(0,180,216,0.2); }
.faq-question {
  width: 100%;
  padding: 18px 22px;
  background: none;
  border: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  color: #e0e8f0;
  font-size: 15px;
  font-weight: 600;
  font-family: inherit;
  text-align: left;
  transition: all 0.3s ease;
}
.faq-question:hover { color: var(--cyan-light); }
.faq-q-icon {
  font-size: 20px;
  transition: transform 0.3s ease;
  color: var(--cyan);
  flex-shrink: 0;
  margin-left: 16px;
}
.faq-item.open .faq-q-icon { transform: rotate(45deg); }
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.3s ease;
}
.faq-answer-inner {
  padding: 0 22px 20px;
  font-size: 14px;
  color: #7a93b0;
  line-height: 1.8;
}
.faq-item.open .faq-answer { max-height: 300px; }

/* === 页脚 === */
.footer {
  padding: 60px 0 0;
  border-top: 1px solid rgba(0,180,216,0.1);
  background: rgba(7,14,26,0.9);
  position: relative;
  z-index: 1;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
  gap: 40px;
  padding-bottom: 48px;
}
.footer-brand .logo-group { margin-bottom: 18px; }
.footer-brand p {
  font-size: 14px;
  color: #5a6d84;
  line-height: 1.8;
  max-width: 280px;
}
.footer-col h4 {
  font-size: 15px;
  font-weight: 700;
  color: #e0e8f0;
  margin-bottom: 18px;
  letter-spacing: 0.5px;
}
.footer-col ul li {
  margin-bottom: 10px;
}
.footer-col ul li a {
  font-size: 14px;
  color: #5a6d84;
  transition: all 0.2s ease;
}
.footer-col ul li a:hover { color: var(--cyan-light); padding-left: 4px; }

.footer-bottom {
  border-top: 1px solid rgba(0,180,216,0.08);
  padding: 20px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.footer-bottom p {
  font-size: 13px;
  color: #4a5d73;
}
.footer-bottom a {
  color: var(--cyan);
}

/* === 动画入场类 === */
.animate-in {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.7s cubic-bezier(0.23,1,0.32,1);
}
.animate-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* === 响应式 === */
@media (max-width: 1024px) {
  :root { --section-padding: 72px 0; }

  .geo-showcase,
  .about-intro,
  .service-block {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .service-block.reverse { direction: ltr; }

  .geo-visual { max-width: 480px; margin: 0 auto; }
  .about-visual { max-width: 480px; margin: 0 auto; }
  .service-visual { max-height: 320px; }

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

  .process-steps { grid-template-columns: repeat(2, 1fr); }
  .process-steps::before { display: none; }

  .plans-grid { grid-template-columns: 1fr; max-width: 420px; margin-left: auto; margin-right: auto; }
}

@media (max-width: 768px) {
  :root { --section-padding: 56px 0; }

  .mobile-toggle { display: flex; }
  .nav-links {
    display: none;
    position: absolute;
    top: var(--nav-height); left: 0; right: 0;
    background: rgba(10,22,40,0.97);
    backdrop-filter: blur(20px);
    flex-direction: column;
    padding: 20px 24px;
    gap: 4px;
    border-bottom: 1px solid rgba(0,180,216,0.1);
  }
  .nav-links.active { display: flex; }
  .nav-links li a { padding: 12px 16px; }

  .hero-title { font-size: 32px; }
  .hero-title .highlight { font-size: 40px; }
  .hero-stats { flex-wrap: wrap; gap: 28px; }

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

  .values-grid { grid-template-columns: 1fr; }
  .data-bar { grid-template-columns: repeat(2, 1fr); padding: 28px; }

  .contact-layout { grid-template-columns: 1fr; }

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

  .service-list { grid-template-columns: 1fr; }

  .footer-grid { grid-template-columns: 1fr; text-align: center; }
  .footer-brand p { max-width: 100%; margin: 0 auto; }
  .footer-bottom { flex-direction: column; gap: 10px; text-align: center; }
}

@media (max-width: 480px) {
  .hero { min-height: auto; padding: calc(var(--nav-height) + 48px) 0 64px; }
  .hero-title { font-size: 26px; }
  .hero-title .highlight { font-size: 34px; }
  .hero-subtitle { font-size: 15px; }
  .btn { padding: 12px 24px; font-size: 14px; }

  .stat-number { font-size: 28px; }

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

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

  .data-bar { grid-template-columns: 1fr 1fr; }
  .data-num { font-size: 28px; }

  .service-block { padding: 28px 20px; }
  .service-detail h3 { font-size: 22px; }
}