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

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', '微软雅黑', Helvetica, Arial, sans-serif;
  color: #333;
  line-height: 1.6;
  background: #fff;
}

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

a {
  text-decoration: none;
  color: inherit;
  transition: all 0.3s ease;
}

ul { list-style: none; }

/* ===== CSS VARIABLES ===== */
:root {
  --primary: #1565C0;
  --primary-light: #1E88E5;
  --primary-dark: #0D47A1;
  --accent: #FF6D00;
  --dark: #0D1B2A;
  --text: #333;
  --text-gray: #666;
  --text-light: #999;
  --bg-light: #F5F7FA;
  --bg-blue: #EBF3FE;
  --border: #E0E8F5;
  --white: #fff;
  --shadow-sm: 0 2px 8px rgba(21,101,192,0.08);
  --shadow-md: 0 8px 32px rgba(21,101,192,0.12);
  --shadow-lg: 0 16px 64px rgba(21,101,192,0.16);
  --radius: 12px;
  --radius-lg: 20px;
  --transition: all 0.3s cubic-bezier(0.4,0,0.2,1);
  --container: 1200px;
}

/* ===== UTILITIES ===== */
.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

.section { padding: 80px 0; }
.section-alt { background: var(--bg-light); }

.section-tag {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  color: var(--primary);
  background: var(--bg-blue);
  padding: 5px 14px;
  border-radius: 20px;
  margin-bottom: 12px;
  letter-spacing: 0.5px;
}

.section-title {
  font-size: clamp(24px, 4vw, 36px);
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 16px;
  line-height: 1.3;
}

.section-subtitle {
  font-size: 17px;
  color: var(--text-gray);
  max-width: 600px;
  line-height: 1.7;
}

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

.section-header .section-subtitle { margin: 0 auto; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: 8px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: var(--transition);
  white-space: nowrap;
}

.btn-primary {
  background: var(--primary);
  color: var(--white);
}

.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(21,101,192,0.3);
}

.btn-outline {
  background: transparent;
  color: var(--white);
  border: 2px solid rgba(255,255,255,0.6);
}

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

.btn-accent {
  background: var(--accent);
  color: var(--white);
}

.btn-accent:hover {
  background: #e65100;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(255,109,0,0.3);
}

.btn-white {
  background: white;
  color: var(--primary);
}

.btn-white:hover {
  background: #f0f0f0;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0,0,0,0.15);
}

/* ===== HEADER ===== */
.header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255,255,255,0.97);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  transition: var(--transition);
}

.header.scrolled {
  box-shadow: var(--shadow-md);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
}

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

.logo-icon {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  color: white;
  font-weight: 800;
  flex-shrink: 0;
}

.logo-text {
  display: flex;
  flex-direction: column;
}

.logo-name {
  font-size: 18px;
  font-weight: 700;
  color: var(--dark);
  line-height: 1.2;
}

.logo-slogan {
  font-size: 11px;
  color: var(--text-gray);
  letter-spacing: 1px;
}

.nav {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav-link {
  padding: 8px 16px;
  border-radius: 8px;
  font-size: 15px;
  color: var(--text);
  font-weight: 500;
  transition: var(--transition);
}

.nav-link:hover, .nav-link.active {
  color: var(--primary);
  background: var(--bg-blue);
}

.nav-cta {
  margin-left: 8px;
  padding: 9px 22px;
  background: var(--primary);
  color: var(--white) !important;
  border-radius: 8px;
  font-weight: 600;
  font-size: 15px;
}

.nav-cta:hover {
  background: var(--primary-dark) !important;
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(21,101,192,0.25);
}

.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 8px;
  border: none;
  background: none;
}

.menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--dark);
  border-radius: 2px;
  transition: var(--transition);
}

.menu-toggle.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

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

.menu-toggle.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ===== HERO ===== */
.hero {
  position: relative;
  background: linear-gradient(135deg, #0D1B2A 0%, #1565C0 65%, #1E88E5 100%);
  overflow: hidden;
  padding: 80px 0 0;
}

.hero::before {
  content: '';
  position: absolute;
  top: -40%;
  right: -8%;
  width: 700px;
  height: 700px;
  background: radial-gradient(circle, rgba(255,255,255,0.05) 0%, transparent 65%);
  border-radius: 50%;
  pointer-events: none;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: 20%;
  left: -5%;
  width: 350px;
  height: 350px;
  background: radial-gradient(circle, rgba(255,109,0,0.1) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

/* 分屏主体 */
.hero-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
  min-height: 480px;
  position: relative;
  z-index: 2;
}

/* 左侧文字 */
.hero-left {
  padding: 20px 0 40px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255,255,255,0.12);
  border: 1px solid rgba(255,255,255,0.2);
  color: rgba(255,255,255,0.9);
  padding: 7px 18px;
  border-radius: 20px;
  font-size: 14px;
  margin-bottom: 24px;
}

.hero-badge::before {
  content: '●';
  color: #4CAF50;
  font-size: 10px;
}

.hero-title {
  font-size: clamp(32px, 4.5vw, 54px);
  font-weight: 800;
  color: #fff;
  line-height: 1.2;
  margin-bottom: 20px;
}

.hero-title em {
  font-style: normal;
  color: #FFB300;
}

.hero-subtitle {
  font-size: clamp(15px, 1.8vw, 18px);
  color: rgba(255,255,255,0.78);
  margin-bottom: 40px;
  line-height: 1.9;
  max-width: 480px;
}

.hero-btns {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

/* 右侧浮动卡片 */
.hero-right {
  position: relative;
  height: 360px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero-card {
  position: absolute;
  background: rgba(255,255,255,0.10);
  backdrop-filter: blur(12px);
  border: 1px solid rgba(255,255,255,0.18);
  border-radius: 18px;
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 20px 24px;
  color: white;
  transition: var(--transition);
  box-shadow: 0 8px 32px rgba(0,0,0,0.18);
}

.hero-card:hover {
  background: rgba(255,255,255,0.16);
  transform: translateY(-4px) scale(1.02);
  box-shadow: 0 16px 48px rgba(0,0,0,0.25);
}

.hero-card-1 {
  top: 10px;
  left: 0;
  right: 60px;
  animation: floatA 4s ease-in-out infinite;
}

.hero-card-2 {
  bottom: 40px;
  left: 40px;
  right: 0;
  animation: floatB 4.5s ease-in-out infinite;
}

.hero-card-3 {
  top: 50%;
  right: 0;
  transform: translateY(-50%);
  flex-direction: column;
  text-align: center;
  padding: 22px 28px;
  gap: 4px;
  animation: floatC 5s ease-in-out infinite;
  background: rgba(255,109,0,0.25);
  border-color: rgba(255,109,0,0.35);
}

.hero-card-3:hover {
  background: rgba(255,109,0,0.35);
  transform: translateY(calc(-50% - 4px)) scale(1.02);
}

@keyframes floatA {
  0%, 100% { transform: translateY(0); }
  50%       { transform: translateY(-10px); }
}
@keyframes floatB {
  0%, 100% { transform: translateY(0); }
  50%       { transform: translateY(10px); }
}
@keyframes floatC {
  0%, 100% { transform: translateY(-50%); }
  50%       { transform: translateY(calc(-50% - 8px)); }
}

.hero-card-icon {
  font-size: 36px;
  flex-shrink: 0;
  line-height: 1;
}

.hero-card-title {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 8px;
}

.hero-card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.hero-card-tags span {
  font-size: 11px;
  background: rgba(255,255,255,0.15);
  border-radius: 20px;
  padding: 3px 10px;
  color: rgba(255,255,255,0.85);
}

.hero-card-stat-num {
  font-size: 36px;
  font-weight: 800;
  line-height: 1;
  color: #FFB300;
}

.hero-card-stat-num small {
  font-size: 18px;
}

.hero-card-stat-label {
  font-size: 12px;
  color: rgba(255,255,255,0.75);
  margin-top: 4px;
}

/* 底部统计栏 */
.hero-stats {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  gap: 0;
  margin-top: 40px;
  padding: 28px 40px;
  background: rgba(0,0,0,0.25);
  border-top: 1px solid rgba(255,255,255,0.10);
  border-radius: 0;
  flex-wrap: wrap;
  justify-content: space-around;
}

.hero-stat {
  text-align: center;
  padding: 0 24px;
  flex: 1;
  min-width: 100px;
}

.hero-stat-divider {
  width: 1px;
  height: 40px;
  background: rgba(255,255,255,0.15);
  flex-shrink: 0;
}

.hero-stat-num {
  font-size: 36px;
  font-weight: 800;
  color: #fff;
  line-height: 1;
}

.hero-stat-num span { color: #FFB300; font-size: 20px; }

.hero-stat-label {
  font-size: 13px;
  color: rgba(255,255,255,0.55);
  margin-top: 6px;
}

/* 旧的 hero-content 兼容清除 */
.hero-content { display: none; }

/* ===== SERVICES GRID ===== */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 28px;
}

.service-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 40px 32px;
  border: 1px solid var(--border);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--primary), var(--primary-light));
  opacity: 0;
  transition: var(--transition);
}

.service-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}

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

.service-icon {
  width: 68px;
  height: 68px;
  background: var(--bg-blue);
  border-radius: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 34px;
  margin-bottom: 24px;
  transition: var(--transition);
}

.service-card:hover .service-icon {
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
}

.service-card h3 {
  font-size: 22px;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 12px;
}

.service-card p {
  font-size: 15px;
  color: var(--text-gray);
  line-height: 1.8;
  margin-bottom: 24px;
}

.service-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 28px;
}

.service-tag {
  font-size: 12px;
  color: var(--primary);
  background: var(--bg-blue);
  padding: 5px 13px;
  border-radius: 20px;
  font-weight: 500;
}

.service-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--primary);
  font-weight: 600;
  font-size: 15px;
  transition: var(--transition);
}

.service-link:hover { gap: 10px; }

/* ===== FEATURES ===== */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 24px;
}

.feature-item {
  padding: 32px 24px;
  text-align: center;
  border-radius: var(--radius);
  background: var(--white);
  border: 1px solid var(--border);
  transition: var(--transition);
}

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

.feature-icon {
  font-size: 44px;
  margin-bottom: 18px;
  display: block;
}

.feature-item h4 {
  font-size: 18px;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 10px;
}

.feature-item p {
  font-size: 14px;
  color: var(--text-gray);
  line-height: 1.7;
}

/* ===== PROCESS ===== */
.process-steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 16px;
  position: relative;
}

.process-steps.cols-4 { grid-template-columns: repeat(4, 1fr); }
.process-steps.cols-5 { grid-template-columns: repeat(5, 1fr); }

.process-steps::before {
  content: '';
  position: absolute;
  top: 40px;
  left: 10%;
  right: 10%;
  height: 2px;
  background: linear-gradient(90deg, var(--primary), var(--primary-light));
  z-index: 0;
}

.process-step {
  text-align: center;
  padding: 0 12px;
  position: relative;
  z-index: 1;
}

.step-num {
  width: 80px;
  height: 80px;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 26px;
  font-weight: 800;
  color: white;
  margin: 0 auto 20px;
  border: 4px solid white;
  box-shadow: 0 4px 20px rgba(21,101,192,0.25);
}

.process-step h4 {
  font-size: 15px;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 8px;
}

.process-step p {
  font-size: 13px;
  color: var(--text-gray);
  line-height: 1.6;
}

/* ===== CTA SECTION ===== */
.cta-section {
  background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 50%, var(--primary-light) 100%);
  padding: 80px 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -10%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(255,255,255,0.07) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.cta-section h2 {
  font-size: clamp(24px, 4vw, 36px);
  font-weight: 800;
  color: white;
  margin-bottom: 16px;
  position: relative;
  z-index: 1;
}

.cta-section p {
  font-size: 18px;
  color: rgba(255,255,255,0.8);
  margin-bottom: 36px;
  position: relative;
  z-index: 1;
}

.cta-btns {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  position: relative;
  z-index: 1;
}

/* ===== FOOTER ===== */
.footer {
  background: var(--dark);
  color: rgba(255,255,255,0.75);
  padding: 64px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

.footer-brand .logo-name { color: white; font-size: 20px; }
.footer-brand .logo-slogan { color: rgba(255,255,255,0.45); font-size: 12px; }

.footer-brand p {
  font-size: 14px;
  line-height: 1.8;
  margin-top: 16px;
  color: rgba(255,255,255,0.55);
}

.footer-contact {
  margin-top: 24px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-contact a,
.footer-contact span {
  font-size: 14px;
  color: rgba(255,255,255,0.65);
  display: flex;
  align-items: flex-start;
  gap: 8px;
  line-height: 1.6;
}

.footer-contact a:hover { color: white; }

.footer-col h4 {
  font-size: 15px;
  font-weight: 700;
  color: white;
  margin-bottom: 20px;
}

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

.footer-col ul li a {
  font-size: 14px;
  color: rgba(255,255,255,0.55);
  transition: var(--transition);
}

.footer-col ul li a:hover {
  color: white;
  padding-left: 4px;
}

.footer-bottom {
  padding: 20px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
}

.footer-bottom p, .footer-bottom a {
  font-size: 13px;
  color: rgba(255,255,255,0.35);
}

.footer-bottom a:hover { color: rgba(255,255,255,0.7); }

/* ===== PAGE HERO (inner pages) ===== */
.page-hero {
  background: linear-gradient(135deg, #0D1B2A 0%, #1565C0 100%);
  padding: 80px 0 72px;
  position: relative;
  overflow: hidden;
}

.page-hero::before {
  content: '';
  position: absolute;
  top: -30%;
  right: -5%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(255,255,255,0.06) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.page-hero-content { position: relative; z-index: 2; }

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 20px;
  font-size: 14px;
  color: rgba(255,255,255,0.55);
}

.breadcrumb a { color: rgba(255,255,255,0.55); }
.breadcrumb a:hover { color: white; }
.breadcrumb span { color: rgba(255,255,255,0.25); }

.page-hero h1 {
  font-size: clamp(28px, 4.5vw, 48px);
  font-weight: 800;
  color: white;
  margin-bottom: 16px;
  line-height: 1.2;
}

.page-hero p {
  font-size: clamp(15px, 2vw, 18px);
  color: rgba(255,255,255,0.75);
  max-width: 620px;
  line-height: 1.8;
}

/* ===== DETAIL CARDS ===== */
.detail-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
}

.detail-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 32px 28px;
  border: 1px solid var(--border);
  transition: var(--transition);
}

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

.detail-card-icon {
  font-size: 38px;
  margin-bottom: 18px;
  display: block;
}

.detail-card h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 14px;
}

.detail-card ul {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.detail-card ul li {
  font-size: 14px;
  color: var(--text-gray);
  display: flex;
  align-items: flex-start;
  gap: 8px;
  line-height: 1.5;
}

.detail-card ul li::before {
  content: '✓';
  color: var(--primary);
  font-weight: 700;
  flex-shrink: 0;
}

/* ===== TECH BADGES ===== */
.tech-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
}

.tech-badge {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px 22px;
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
  transition: var(--transition);
}

.tech-badge:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: var(--bg-blue);
  transform: translateY(-2px);
}

/* ===== ABOUT PAGE ===== */
.about-intro {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.about-text h2 {
  font-size: clamp(24px, 3.5vw, 36px);
  font-weight: 800;
  color: var(--dark);
  margin-bottom: 20px;
  line-height: 1.3;
}

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

.about-features {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-top: 12px;
}

.about-feature {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 15px;
  color: var(--text);
}

.about-feature-icon {
  width: 30px;
  height: 30px;
  background: var(--bg-blue);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  flex-shrink: 0;
}

.about-visual {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.about-stat-card {
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  border-radius: var(--radius);
  padding: 36px 20px;
  text-align: center;
  color: white;
}

.about-stat-card.alt {
  background: linear-gradient(135deg, #1a2a4a, #243558);
  margin-top: 32px;
}

.about-stat-card .num {
  font-size: 52px;
  font-weight: 800;
  line-height: 1;
  margin-bottom: 8px;
}

.about-stat-card .num span { font-size: 26px; }
.about-stat-card .label { font-size: 14px; opacity: 0.85; }

/* ===== VALUES ===== */
.values-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 24px;
}

.value-card {
  text-align: center;
  padding: 40px 24px;
  border-radius: var(--radius);
  background: var(--white);
  border: 1px solid var(--border);
  transition: var(--transition);
}

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

.value-icon {
  font-size: 46px;
  margin-bottom: 18px;
  display: block;
}

.value-card h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 10px;
}

.value-card p {
  font-size: 14px;
  color: var(--text-gray);
  line-height: 1.7;
}

/* ===== CONTACT ===== */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: start;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 24px;
  background: var(--bg-light);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  transition: var(--transition);
}

.contact-item:hover {
  border-color: var(--primary);
  background: var(--bg-blue);
}

.contact-item-icon {
  width: 50px;
  height: 50px;
  background: var(--primary);
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  flex-shrink: 0;
}

.contact-item-content h4 {
  font-size: 15px;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 6px;
}

.contact-item-content p,
.contact-item-content a {
  font-size: 15px;
  color: var(--text-gray);
  line-height: 1.6;
}

.contact-item-content a:hover { color: var(--primary); }

.map-embed {
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  margin-top: 20px;
}

.map-embed iframe {
  width: 100%;
  height: 320px;
  display: block;
  border: none;
}

/* ===== SCROLL REVEAL ===== */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.revealed {
  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; }

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }

  .about-intro,
  .contact-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .process-steps.cols-4,
  .process-steps.cols-5 {
    grid-template-columns: repeat(2, 1fr);
  }

  .process-steps::before { display: none; }
}

@media (max-width: 768px) {
  .section { padding: 60px 0; }

  .nav {
    display: none;
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    background: white;
    flex-direction: column;
    align-items: stretch;
    padding: 12px 16px 20px;
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow-md);
    gap: 2px;
  }

  .nav.open { display: flex; }
  .nav-link { padding: 12px 16px; }
  .nav-cta { margin-left: 0; text-align: center; justify-content: center; }
  .menu-toggle { display: flex; }

  /* Hero 移动端：单列堆叠 */
  .hero { padding: 48px 0 0; }
  .hero-split {
    grid-template-columns: 1fr;
    gap: 32px;
    min-height: auto;
  }
  .hero-left { padding: 0 0 8px; }
  .hero-right { display: none; }
  .hero-btns { flex-direction: column; align-items: flex-start; }
  .hero-btns .btn { width: 100%; justify-content: center; }
  .hero-stats {
    padding: 20px 16px;
    gap: 0;
  }
  .hero-stat-divider { height: 28px; }
  .hero-stat-num { font-size: 26px; }

  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .footer-bottom { flex-direction: column; text-align: center; }

  .about-visual { display: none; }
  .cta-btns { flex-direction: column; align-items: center; }

  .process-steps.cols-4,
  .process-steps.cols-5 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 480px) {
  .container { padding: 0 16px; }
  .hero-btns .btn { width: 100%; justify-content: center; }

  .process-steps.cols-4,
  .process-steps.cols-5 {
    grid-template-columns: 1fr;
  }
}