/* ===================================================
   优诺信（常州）科技有限公司 - 官网样式
   主色调：科技蓝 #0066FF
   ================================================== */

/* ---------- CSS 变量 ---------- */
:root {
  --primary: #0066FF;
  --primary-dark: #0044CC;
  --primary-light: #3388FF;
  --accent: #00AAFF;
  --accent2: #00C8FF;
  --dark: #0A0F1E;
  --dark2: #0D1528;
  --dark3: #111D38;
  --text-primary: #1A2340;
  --text-secondary: #4A5568;
  --text-light: #718096;
  --bg-light: #F7F9FC;
  --bg-section: #F0F4FF;
  --border: #E2E8F0;
  --white: #FFFFFF;

  --nav-h: 72px;
  --radius: 12px;
  --radius-lg: 20px;
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.08);
  --shadow-md: 0 8px 32px rgba(0,0,0,0.12);
  --shadow-blue: 0 8px 32px rgba(0,102,255,0.2);
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);

  --font: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

/* ---------- 重置 ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html {
  scroll-behavior: smooth;
  font-size: 16px;
  background: var(--dark);
}
body {
  font-family: var(--font);
  color: var(--text-primary);
  background: var(--dark);
  line-height: 1.6;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }
button { cursor: pointer; border: none; background: none; font-family: var(--font); }
input, textarea, select {
  font-family: var(--font);
  outline: none;
}

/* ---------- 通用容器 ---------- */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- 按钮 ---------- */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: var(--white);
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.95rem;
  transition: var(--transition);
  box-shadow: var(--shadow-blue);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 40px rgba(0,102,255,0.35);
}
.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  background: transparent;
  color: var(--white);
  border: 2px solid rgba(255,255,255,0.5);
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.95rem;
  transition: var(--transition);
}
.btn-outline:hover {
  background: rgba(255,255,255,0.1);
  border-color: rgba(255,255,255,0.8);
}

/* ---------- Section Header ---------- */
.section-header {
  text-align: center;
  margin-bottom: 60px;
}
.section-tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  color: var(--primary);
  background: rgba(0,102,255,0.08);
  padding: 4px 14px;
  border-radius: 20px;
  margin-bottom: 16px;
}
.section-title {
  font-size: clamp(1.8rem, 3vw, 2.5rem);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 16px;
  line-height: 1.3;
}
.section-desc {
  font-size: 1.05rem;
  color: var(--text-secondary);
  max-width: 560px;
  margin: 0 auto;
}
.section-header.light .section-title { color: var(--white); }
.section-header.light .section-desc { color: rgba(255,255,255,0.75); }
.section-header.light .section-tag {
  color: var(--accent2);
  background: rgba(0,200,255,0.15);
}

/* ====================================================
   导航栏
   ==================================================== */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  height: calc(var(--nav-h) + env(safe-area-inset-top, 0px));
  padding-top: env(safe-area-inset-top, 0px);
  transition: var(--transition);
  background: rgba(10, 15, 30, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-sizing: border-box;
}
.navbar.scrolled {
  background: rgba(10, 15, 30, 0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: 0 1px 0 rgba(255,255,255,0.08);
}
.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}
.logo-img {
  height: 42px;
  width: auto;
  object-fit: contain;
  border-radius: 6px;
}
.logo-text { display: flex; flex-direction: column; line-height: 1.2; }
.logo-name {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--white);
  letter-spacing: 0.05em;
}
.logo-sub {
  font-size: 0.65rem;
  color: rgba(255,255,255,0.5);
  letter-spacing: 0.08em;
}
.nav-menu {
  display: flex;
  align-items: center;
  gap: 8px;
}
.nav-link {
  color: rgba(255,255,255,0.85);
  font-size: 0.9rem;
  font-weight: 500;
  padding: 8px 14px;
  border-radius: 6px;
  transition: var(--transition);
  position: relative;
}
.nav-link:hover, .nav-link.active {
  color: var(--white);
  background: rgba(255,255,255,0.08);
}
.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: 4px; left: 50%;
  transform: translateX(-50%);
  width: 16px; height: 2px;
  background: var(--accent);
  border-radius: 2px;
}
.btn-nav-cta {
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: var(--white);
  padding: 9px 22px;
  border-radius: 8px;
  font-size: 0.88rem;
  font-weight: 600;
  transition: var(--transition);
  box-shadow: 0 4px 16px rgba(0,102,255,0.3);
}
.btn-nav-cta:hover {
  transform: translateY(-1px);
  box-shadow: 0 8px 24px rgba(0,102,255,0.4);
}
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 4px;
}
.hamburger span {
  display: block;
  width: 22px; height: 2px;
  background: var(--white);
  border-radius: 2px;
  transition: var(--transition);
}
.hamburger.open span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* ====================================================
   英雄区
   ==================================================== */
.hero {
  min-height: 100vh;
  min-height: -webkit-fill-available;
  min-height: 100dvh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, #000A1F 0%, #001040 40%, #001A6E 100%);
  padding: var(--nav-h) 0 60px;
}
.hero-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
}
.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(0,102,255,0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,102,255,0.06) 1px, transparent 1px);
  background-size: 60px 60px;
}
.hero-glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  pointer-events: none;
}
.hero-glow-1 {
  width: 600px; height: 600px;
  top: -200px; left: -100px;
  background: radial-gradient(circle, rgba(0,102,255,0.3) 0%, transparent 70%);
}
.hero-glow-2 {
  width: 400px; height: 400px;
  bottom: -100px; right: 10%;
  background: radial-gradient(circle, rgba(0,170,255,0.2) 0%, transparent 70%);
}
.hero-particles {
  position: absolute;
  inset: 0;
}
.particle {
  position: absolute;
  border-radius: 50%;
  background: rgba(0,200,255,0.6);
  animation: float linear infinite;
}
@keyframes float {
  0% { transform: translateY(100vh) scale(0); opacity: 0; }
  10% { opacity: 1; }
  90% { opacity: 1; }
  100% { transform: translateY(-100px) scale(1); opacity: 0; }
}

/* 英雄内容布局 - 幻灯片 */
.hero-slider {
  position: relative;
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  padding-top: calc(var(--nav-h) + 40px);
  padding-bottom: 60px;
  z-index: 2;
}
.hero-slide {
  display: none;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  animation: fadeSlide 0.8s ease both;
}
.hero-slide.active {
  display: grid;
}
@keyframes fadeSlide {
  from { opacity: 0; transform: translateX(30px); }
  to   { opacity: 1; transform: translateX(0); }
}
.hero-content, .hero-visual {
  position: relative;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(0,102,255,0.15);
  border: 1px solid rgba(0,102,255,0.3);
  padding: 6px 16px;
  border-radius: 20px;
  color: var(--accent2);
  font-size: 0.85rem;
  font-weight: 500;
  margin-bottom: 24px;
}
.badge-dot {
  width: 8px; height: 8px;
  background: var(--accent2);
  border-radius: 50%;
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(1.3); }
}
.hero-title {
  font-size: clamp(2rem, 4vw, 3.2rem);
  font-weight: 700;
  color: var(--white);
  line-height: 1.25;
  margin-bottom: 20px;
}
.gradient-text {
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent2) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-desc {
  font-size: 1rem;
  color: rgba(255,255,255,0.7);
  line-height: 1.8;
  margin-bottom: 36px;
}
.hero-btns {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 48px;
}
.hero-stats {
  display: flex;
  align-items: center;
  gap: 24px;
}
.stat-item {
  display: flex;
  flex-direction: column;
}
.stat-num-row {
  display: flex;
  align-items: baseline;
  gap: 2px;
}
.stat-num {
  font-size: 2rem;
  font-weight: 700;
  color: var(--white);
  line-height: 1;
}
.stat-unit {
  font-size: 1rem;
  font-weight: 600;
  color: var(--accent);
}
.stat-label {
  font-size: 0.8rem;
  color: rgba(255,255,255,0.5);
  margin-top: 4px;
}
.stat-divider {
  width: 1px;
  height: 40px;
  background: rgba(255,255,255,0.15);
}

/* 轮播指示点 */
.hero-dots {
  position: absolute;
  bottom: 100px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 12px;
  z-index: 3;
}
.hero-dots .dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  border: none;
  background: rgba(255,255,255,0.25);
  cursor: pointer;
  transition: all 0.3s;
  padding: 0;
}
.hero-dots .dot.active {
  background: var(--accent);
  box-shadow: 0 0 8px var(--accent);
  transform: scale(1.2);
}

/* 仪表盘Mockup */
.hero-visual {
  display: flex;
  justify-content: center;
  align-items: center;
}
.dashboard-mockup {
  background: rgba(13, 21, 40, 0.8);
  border: 1px solid rgba(0,102,255,0.3);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 480px;
  overflow: hidden;
  backdrop-filter: blur(20px);
  box-shadow: 0 20px 80px rgba(0,0,0,0.4), 0 0 0 1px rgba(0,102,255,0.15);
  animation: float-card 6s ease-in-out infinite;
}
@keyframes float-card {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}
.mockup-header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 20px;
  border-bottom: 1px solid rgba(255,255,255,0.06);
}
.mockup-dots { display: flex; gap: 6px; }
.mockup-dots span {
  width: 10px; height: 10px;
  border-radius: 50%;
}
.mockup-dots span:nth-child(1) { background: #FF5F56; }
.mockup-dots span:nth-child(2) { background: #FEBC2E; }
.mockup-dots span:nth-child(3) { background: #28C840; }
.mockup-title {
  font-size: 0.82rem;
  color: rgba(255,255,255,0.5);
  font-weight: 500;
}
.mockup-body {
  padding: 20px;
}
.mockup-chart {
  background: rgba(0,102,255,0.05);
  border-radius: 8px;
  padding: 12px;
  margin-bottom: 16px;
  border: 1px solid rgba(0,102,255,0.1);
}
.mockup-chart svg { width: 100%; height: 80px; }
.mockup-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin-bottom: 16px;
}
.mc-card {
  background: rgba(0,102,255,0.08);
  border: 1px solid rgba(0,102,255,0.15);
  border-radius: 8px;
  padding: 12px 8px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.mc-icon { font-size: 1.2rem; }
.mc-num { font-size: 0.85rem; font-weight: 700; color: var(--white); }
.mc-lbl { font-size: 0.68rem; color: rgba(255,255,255,0.45); }
.mockup-status {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.ms-row {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.78rem;
  color: rgba(255,255,255,0.6);
}
.ms-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}
.ms-dot.green { background: #28C840; box-shadow: 0 0 6px #28C840; }
.ms-dot.yellow { background: #FEBC2E; box-shadow: 0 0 6px #FEBC2E; }
.ms-dot.blue { background: #00AAFF; box-shadow: 0 0 6px #00AAFF; }

/* 报告预览 Mockup */
.mockup-report-preview {
  padding: 16px 20px;
  background: rgba(0,102,255,0.06);
  border: 1px solid rgba(0,102,255,0.15);
  border-radius: 10px;
  margin-bottom: 14px;
}
.mrp-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
}
.mrp-tag {
  background: var(--accent);
  color: var(--white);
  font-size: 0.7rem;
  padding: 2px 8px;
  border-radius: 4px;
  font-weight: 500;
}
.mrp-id {
  font-size: 0.7rem;
  color: rgba(255,255,255,0.4);
}
.mrp-rows { display: flex; flex-direction: column; gap: 8px; }
.mrp-row {
  display: flex;
  justify-content: space-between;
  font-size: 0.78rem;
  color: rgba(255,255,255,0.75);
}
.mrp-row span:first-child { color: rgba(255,255,255,0.45); }
.mrp-pass {
  color: #28C840;
  font-weight: 600;
}
.mrp-progress {
  height: 4px;
  background: rgba(255,255,255,0.08);
  border-radius: 2px;
  margin-top: 4px;
  overflow: hidden;
}
.mrp-bar {
  height: 100%;
  background: linear-gradient(90deg, #0066FF, #00C8FF);
  border-radius: 2px;
}

/* Scroll down */
.scroll-down {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: rgba(255,255,255,0.4);
  font-size: 0.75rem;
  animation: bounce 2s infinite;
}
.scroll-arrow { animation: bounce-arrow 2s infinite; }
@keyframes bounce {
  0%, 100% { opacity: 0.4; }
  50% { opacity: 0.8; }
}
@keyframes bounce-arrow {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(6px); }
}
.pc-only { display: inline; }

/* ====================================================
   关于我们
   ==================================================== */
.about {
  padding: 100px 0;
  background: var(--bg-light);
}
.about-layout {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 64px;
  align-items: center;
}
.about-image {
  position: relative;
}
.about-img-inner {
  position: relative;
  min-height: 400px;
}
.about-img-bg {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--primary) 0%, var(--dark2) 100%);
  border-radius: var(--radius-lg);
  opacity: 0.08;
}
.about-img-card {
  position: relative;
  z-index: 1;
  background: linear-gradient(135deg, var(--dark2), var(--dark3));
  border: 1px solid rgba(0,102,255,0.2);
  border-radius: var(--radius-lg);
  padding: 40px;
  text-align: center;
  color: var(--white);
  min-height: 320px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 16px;
  box-shadow: var(--shadow-blue);
}
.feature-icon-lg { font-size: 3rem; }
.about-img-card h3 {
  font-size: 1.3rem;
  font-weight: 700;
}
.about-img-card p {
  color: rgba(255,255,255,0.65);
  font-size: 0.9rem;
  line-height: 1.7;
}
.about-badge-float {
  position: absolute;
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--white);
  padding: 10px 16px;
  border-radius: 50px;
  box-shadow: var(--shadow-md);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-primary);
  animation: float-badge 4s ease-in-out infinite;
}
.about-badge-1 {
  top: -20px; right: -20px;
  animation-delay: 0s;
}
.about-badge-2 {
  bottom: 20px; left: -20px;
  animation-delay: -2s;
}
@keyframes float-badge {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}
.about-subtitle {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 20px;
}
.about-text {
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 16px;
  font-size: 0.95rem;
}
.about-features {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin: 32px 0;
}
.af-item {
  display: flex;
  gap: 12px;
  align-items: flex-start;
}
.af-icon { font-size: 1.4rem; flex-shrink: 0; }
.af-item strong {
  display: block;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 4px;
}
.af-item p {
  font-size: 0.82rem;
  color: var(--text-light);
  line-height: 1.5;
}

/* ====================================================
   产品服务
   ==================================================== */
.services {
  padding: 100px 0;
  background: var(--white);
}
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.service-card {
  padding: 32px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  background: var(--white);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.service-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  transform: scaleX(0);
  transform-origin: left;
  transition: var(--transition);
}
.service-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-blue);
  border-color: rgba(0,102,255,0.2);
}
.service-card:hover::before { transform: scaleX(1); }
.service-card.featured {
  background: linear-gradient(135deg, var(--dark2), var(--dark3));
  border-color: rgba(0,102,255,0.3);
  color: var(--white);
  grid-row: span 1;
}
.service-card.featured::before { transform: scaleX(1); }
.service-card.featured h3 { color: var(--white); }
.service-card.featured p { color: rgba(255,255,255,0.65); }
.service-card.featured .sc-features li { color: rgba(255,255,255,0.7); }
.service-card.featured .sc-features li::before { color: var(--accent); }
.service-card.featured .sc-link { color: var(--accent); }
.sc-icon { margin-bottom: 20px; }
.service-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 12px;
}
.service-card p {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 16px;
}
.sc-features {
  margin-bottom: 20px;
}
.sc-features li {
  font-size: 0.84rem;
  color: var(--text-light);
  padding: 4px 0;
  padding-left: 16px;
  position: relative;
}
.sc-features li::before {
  content: '·';
  position: absolute;
  left: 0;
  color: var(--primary);
  font-size: 1.2rem;
  line-height: 1.2;
}
.sc-link {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--primary);
  transition: var(--transition);
}
.sc-link:hover { color: var(--accent); }

/* ====================================================
   解决方案
   ==================================================== */
.cases {
  padding: 100px 0;
  background: linear-gradient(135deg, #000A1F 0%, #001550 100%);
}
.cases-tabs {
  display: flex;
  gap: 8px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 48px;
}
.tab-btn {
  padding: 10px 24px;
  border-radius: 6px;
  font-size: 0.9rem;
  font-weight: 500;
  color: rgba(255,255,255,0.6);
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.1);
  transition: var(--transition);
}
.tab-btn:hover {
  background: rgba(0,102,255,0.15);
  color: rgba(255,255,255,0.9);
}
.tab-btn.active {
  background: var(--primary);
  color: var(--white);
  border-color: var(--primary);
  box-shadow: var(--shadow-blue);
}
.case-panel {
  display: none;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}
.case-panel.active { display: grid; }
.cp-img-placeholder {
  background: rgba(13,21,40,0.8);
  border: 1px solid rgba(0,102,255,0.25);
  border-radius: var(--radius-lg);
  padding: 40px;
  min-height: 320px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 32px;
}
.cp-icon { font-size: 3rem; }
.cp-mockup-lines { width: 100%; display: flex; flex-direction: column; gap: 16px; }
.cml-row {
  display: flex;
  align-items: center;
  gap: 12px;
}
.cml-bar {
  height: 8px;
  border-radius: 4px;
  opacity: 0.8;
  transition: width 1s ease;
}
.cml-row span {
  font-size: 0.8rem;
  color: rgba(255,255,255,0.6);
  white-space: nowrap;
}
.cp-info { color: var(--white); }
.cp-info h3 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 16px;
}
.cp-info p {
  color: rgba(255,255,255,0.65);
  line-height: 1.8;
  margin-bottom: 24px;
}
.cp-highlights {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 32px;
}
.cph-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.9rem;
  color: rgba(255,255,255,0.8);
}

/* ====================================================
   技术优势
   ==================================================== */
.tech-advantage {
  padding: 80px 0;
  background: var(--bg-section);
}
.tech-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
}
.tech-item {
  padding: 28px 24px;
  background: var(--white);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  transition: var(--transition);
}
.tech-item:hover {
  border-color: rgba(0,102,255,0.3);
  box-shadow: var(--shadow-blue);
  transform: translateY(-4px);
}
.tech-num {
  font-size: 2.5rem;
  font-weight: 800;
  color: rgba(0,102,255,0.12);
  line-height: 1;
  margin-bottom: 16px;
  letter-spacing: -2px;
}
.tech-item h4 {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 8px;
}
.tech-item p {
  font-size: 0.84rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ====================================================
   新闻动态
   ==================================================== */
.news {
  padding: 100px 0;
  background: var(--white);
}
.news-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 24px;
  align-items: start;
}
.news-card {
  border-radius: var(--radius-lg);
  padding: 28px;
  border: 1px solid var(--border);
  transition: var(--transition);
}
.news-card:hover {
  border-color: rgba(0,102,255,0.2);
  box-shadow: var(--shadow-blue);
  transform: translateY(-4px);
}
.featured-news {
  background: linear-gradient(135deg, #E8F1FF, #D4E5FF);
  border-color: rgba(0,102,255,0.15);
  color: var(--text-primary);
  grid-row: span 2;
}
.featured-news h3 { color: var(--text-primary); }
.featured-news p { color: var(--text-secondary); }
.featured-news .nc-more { color: var(--primary); }
.nc-tag {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--primary);
  background: rgba(0,102,255,0.1);
  padding: 2px 10px;
  border-radius: 4px;
  margin-bottom: 10px;
}
.featured-news .nc-tag {
  background: rgba(0,102,255,0.12);
  color: var(--primary);
}
.nc-date {
  font-size: 0.78rem;
  color: var(--text-light);
  margin-bottom: 12px;
}
.featured-news .nc-date { color: var(--text-light); }
.news-card h3 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.5;
  margin-bottom: 12px;
}
.featured-news h3 {
  font-size: 1.2rem;
  line-height: 1.4;
}
.news-card p {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 16px;
}
.nc-more {
  font-size: 0.84rem;
  font-weight: 600;
  color: var(--primary);
  transition: var(--transition);
}
.nc-more:hover { color: var(--accent); }

/* ====================================================
   联系我们
   ==================================================== */
.contact {
  padding: 100px 0;
  background: linear-gradient(135deg, #000A1F 0%, #001550 100%);
}
.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 60px;
  align-items: start;
}
.contact-info {
  color: var(--white);
  display: flex;
  flex-direction: column;
  gap: 24px;
}
.ci-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
}
.ci-icon {
  font-size: 1.5rem;
  flex-shrink: 0;
  width: 44px; height: 44px;
  background: rgba(0,102,255,0.15);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
}
.ci-item strong {
  display: block;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--white);
  margin-bottom: 4px;
}
.ci-item p {
  font-size: 0.9rem;
  color: rgba(255,255,255,0.6);
}
.qr-row {
  display: flex;
  gap: 20px;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 12px;
}
.qr-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}
.qr-row .qr-placeholder {
  margin-top: 0;
}
.qr-box {
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(0,102,255,0.2);
  border-radius: 10px;
  padding: 16px;
}
.qr-img {
  width: 160px;
  height: 160px;
  object-fit: cover;
  border-radius: 6px;
  display: block;
}
.qr-placeholder span {
  font-size: 0.82rem;
  color: rgba(255,255,255,0.45);
}
/* 表单 */
.contact-form {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 40px;
  box-shadow: 0 20px 60px rgba(0,0,0,0.3);
}
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 16px;
}
.form-group label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-primary);
}
.form-group input,
.form-group select,
.form-group textarea {
  padding: 11px 14px;
  border: 1.5px solid var(--border);
  border-radius: 8px;
  font-size: 0.9rem;
  color: var(--text-primary);
  background: var(--white);
  transition: var(--transition);
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(0,102,255,0.1);
}
.form-group textarea { resize: vertical; }
.btn-submit {
  width: 100%;
  padding: 14px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: var(--white);
  border-radius: 8px;
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  transition: var(--transition);
  box-shadow: var(--shadow-blue);
}
.btn-submit:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 40px rgba(0,102,255,0.4);
}
.btn-submit:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

/* ====================================================
   页脚
   ==================================================== */
.footer {
  background: #060C1A;
}
.footer-top {
  padding: 60px 0 40px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
}
.footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
}
.footer-logo-img {
  height: 42px;
  width: auto;
  object-fit: contain;
  border-radius: 6px;
}
.footer-logo span {
  font-size: 1rem;
  font-weight: 700;
  color: var(--white);
}
.footer-brand p {
  font-size: 0.85rem;
  color: rgba(255,255,255,0.45);
  line-height: 1.7;
  margin-bottom: 20px;
}
.footer-social {
  display: flex;
  gap: 10px;
}
.social-link {
  width: 36px; height: 36px;
  background: rgba(255,255,255,0.06);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255,255,255,0.5);
  transition: var(--transition);
}
.social-link:hover {
  background: var(--primary);
  color: var(--white);
}
.footer-links h4 {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 20px;
}
.footer-links ul { display: flex; flex-direction: column; gap: 10px; }
.footer-links a {
  font-size: 0.84rem;
  color: rgba(255,255,255,0.45);
  transition: var(--transition);
}
.footer-links a:hover { color: var(--accent); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.06);
  padding: 20px 0;
  display: flex;
}
.footer-bottom .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  width: 100%;
}
.footer-bottom p {
  font-size: 0.8rem;
  color: rgba(255,255,255,0.3);
}
.footer-beian {
  display: flex;
  align-items: center;
  gap: 20px;
  margin-left: auto;
}
.footer-beian a {
  font-size: 0.8rem;
  color: rgba(255,255,255,0.3);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  transition: color 0.2s;
}
.footer-beian a:hover { color: rgba(255,255,255,0.6); }
.footer-beian-gov img {
  height: 16px;
  width: auto;
  vertical-align: middle;
}

/* ====================================================
   回顶 & Toast
   ==================================================== */
.back-to-top {
  position: fixed;
  right: 24px;
  bottom: 32px;
  width: 44px; height: 44px;
  background: var(--primary);
  color: var(--white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-blue);
  opacity: 0;
  transform: translateY(10px);
  transition: var(--transition);
  z-index: 999;
  pointer-events: none;
}
.back-to-top.visible {
  opacity: 1;
  transform: translateY(0);
  pointer-events: all;
}
.back-to-top:hover { transform: translateY(-3px); }
.toast {
  position: fixed;
  bottom: 80px;
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  background: rgba(0,20,50,0.92);
  color: var(--white);
  padding: 12px 24px;
  border-radius: 8px;
  font-size: 0.9rem;
  box-shadow: var(--shadow-md);
  opacity: 0;
  transition: var(--transition);
  z-index: 2000;
  pointer-events: none;
  border: 1px solid rgba(0,102,255,0.3);
}
.toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* ====================================================
   响应式布局
   ==================================================== */
@media (max-width: 1024px) {
  .hero {
    grid-template-columns: 1fr;
    padding-top: calc(var(--nav-h) + 20px);
    text-align: center;
  }
  .hero-slide.active { grid-template-columns: 1fr; text-align: center; }
  .hero-btns { justify-content: center; }
  .hero-stats { justify-content: center; }
  .hero-visual { display: none; }
  .hero-badge { display: inline-flex; }
  .services-grid { grid-template-columns: repeat(2, 1fr); }
  .tech-grid { grid-template-columns: repeat(2, 1fr); }
  .news-grid { grid-template-columns: 1fr 1fr; }
  .featured-news { grid-row: span 1; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
}

@media (max-width: 768px) {
  :root { --nav-h: 64px; }

  /* 导航 */
  .nav-menu {
    position: fixed;
    top: calc(var(--nav-h) + env(safe-area-inset-top, 0px));
    left: 0; right: 0;
    background: rgba(10,15,30,0.97);
    backdrop-filter: blur(20px);
    flex-direction: column;
    padding: 24px;
    gap: 4px;
    transform: translateY(-150%);
    visibility: hidden;
    transition: transform 0.35s cubic-bezier(0.4,0,0.2,1), visibility 0.35s;
    border-bottom: 1px solid rgba(255,255,255,0.08);
    pointer-events: none;
  }
  .nav-menu.open {
    transform: translateY(0);
    visibility: visible;
    pointer-events: auto;
  }
  .nav-link {
    font-size: 1rem;
    padding: 12px 16px;
    width: 100%;
  }
  .btn-nav-cta { display: none; }
  .hamburger { display: flex; }

  /* 英雄区 */
  .hero {
    padding-top: calc(var(--nav-h) + env(safe-area-inset-top, 0px) + 12px);
  }
  .hero-slider {
    padding-top: 20px;
    padding-bottom: 40px;
  }
  .hero-title { font-size: 1.8rem; }
  .hero-desc { font-size: 0.9rem; }
  .pc-only { display: none; }

  /* 关于 */
  .about-layout { grid-template-columns: 1fr; }
  .about-image { display: none; }

  /* 服务 */
  .services-grid { grid-template-columns: 1fr; }

  /* 方案 */
  .case-panel.active { grid-template-columns: 1fr; }
  .cp-visual { display: none; }

  /* 技术 */
  .tech-grid { grid-template-columns: 1fr 1fr; }

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

  /* 联系 */
  .contact-layout { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }

  /* 页脚 */
  .footer-grid { grid-template-columns: 1fr; gap: 24px; }
  .footer-bottom .container { flex-direction: column; text-align: center; }

  .section-header { margin-bottom: 40px; }
  .about, .services, .news { padding: 70px 0; }
  .cases, .contact { padding: 70px 0; }
  .tech-advantage { padding: 60px 0; }
}

@media (max-width: 480px) {
  .hero-stats { flex-wrap: wrap; justify-content: center; gap: 20px; }
  .stat-divider { display: none; }
  .hero-btns { flex-direction: column; align-items: center; }
  .about-features { grid-template-columns: 1fr; }
  .tech-grid { grid-template-columns: 1fr; }
  .contact-form { padding: 24px; }
}

/* ====================================================
   动画 / 进场效果
   ==================================================== */
[data-aos] {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
[data-aos].aos-animate {
  opacity: 1;
  transform: translateY(0);
}
[data-aos="fade-right"] { transform: translateX(-24px); }
[data-aos="fade-right"].aos-animate { transform: translateX(0); }
[data-aos="fade-left"] { transform: translateX(24px); }
[data-aos="fade-left"].aos-animate { transform: translateX(0); }

/* ====================================================
   车辆年审 Tab 专属样式
   ==================================================== */
.cp-miniprogram-badge {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 8px;
  background: rgba(0,102,255,0.15);
  border: 1px solid rgba(0,102,255,0.4);
  border-radius: 40px;
  padding: 10px 20px;
  backdrop-filter: blur(4px);
}
.mp-icon { font-size: 1.5rem; }
.mp-text {
  font-size: 0.85rem;
  color: rgba(255,255,255,0.9);
  font-weight: 600;
  line-height: 1.4;
}
.mp-text small {
  font-weight: 400;
  color: rgba(255,255,255,0.55);
  font-size: 0.75rem;
}
.btn-carinspect {
  background: linear-gradient(135deg, #0066FF 0%, #00C8FF 100%);
  box-shadow: 0 4px 20px rgba(0,200,255,0.35);
}
.btn-carinspect:hover {
  box-shadow: 0 6px 28px rgba(0,200,255,0.5);
  transform: translateY(-2px);
}

/* 车辆年审右侧：亮点列表 + 二维码并排 */
.cp-info-body {
  display: flex;
  align-items: flex-start;
  gap: 24px;
  margin-bottom: 32px;
}
.cp-info-body .cp-highlights {
  flex: 1;
  margin-bottom: 0;
}
.cp-qrcode-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}
.cp-qrcode-img {
  width: 180px;
  height: 180px;
  border-radius: 10px;
  border: 2px solid rgba(0,102,255,0.4);
  object-fit: cover;
  background: #fff;
}
.cp-qrcode-tip {
  font-size: 0.75rem;
  color: rgba(255,255,255,0.5);
  text-align: center;
  margin: 0;
}