* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --bg: #ffffff;
  --text: #0f172a;
  --muted: #64748b;
  --primary: #2563eb;
  --primary-light: #7ce7ff;
  --card: #f8fafc;
  --border: #e2e8f0;
  --shadow: 0 24px 48px rgba(15, 23, 42, 0.12);
}

body {
  font-family: "Inter", "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
  padding-top: 80px;
}

html {
  overflow-x: hidden;
}

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

a {
  text-decoration: none;
  color: inherit;
}

.container {
  width: min(1200px, 92%);
  margin: 0 auto;
}

.noise {
  position: fixed;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.8' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='180' height='180' filter='url(%23n)' opacity='.035'/%3E%3C/svg%3E");
  pointer-events: none;
  z-index: 0;
}

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 10;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 0;
  height: 80px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 600;
}

.brand img {
  height: 60px;
  object-fit: contain;
}

.menu {
  display: flex;
  gap: 24px;
  font-size: 14px;
  color: var(--muted);
}

.btn {
  border: none;
  padding: 12px 20px;
  border-radius: 999px;
  cursor: pointer;
  font-weight: 600;
  transition: all 0.3s ease;
}

.btn.primary {
  background: var(--primary);
  color: white;
  box-shadow: 0 10px 20px rgba(37, 99, 235, 0.25);
}

.btn.primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 28px rgba(37, 99, 235, 0.35);
}

.btn.ghost {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text);
}

.hero {
  position: relative;
  padding: 90px 0 120px;
}

.hero-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 40px;
  align-items: center;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  background: rgba(37, 99, 235, 0.08);
  color: var(--primary);
  border-radius: 999px;
  font-size: 13px;
  margin-bottom: 18px;
}

.hero-text h1 {
  font-size: clamp(32px, 4vw, 48px);
  line-height: 1.15;
  margin-bottom: 18px;
}

.hero-text p {
  color: var(--muted);
  font-size: 16px;
  margin-bottom: 26px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  margin-bottom: 32px;
}

.hero-stats {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
}

.stat {
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-width: 120px;
}

.stat .num {
  font-size: 26px;
  font-weight: 700;
}

.stat .label {
  color: var(--muted);
  font-size: 13px;
}

.hero-visual {
  position: relative;
}

.glow-card {
  position: relative;
  border-radius: 24px;
  padding: 40px;
  background: #fff;
  box-shadow: var(--shadow);
  overflow: hidden;
}

.orbit {
  position: absolute;
  inset: -60px;
  opacity: 0.25;
}

.orbit circle {
  fill: none;
  stroke: url(#grad);
  stroke-width: 2;
}

.orbit-line {
  fill: none;
  stroke: var(--primary);
  stroke-width: 2;
  stroke-dasharray: 12;
  animation: dash 12s linear infinite;
}

@keyframes dash {
  from {
    stroke-dashoffset: 0;
  }
  to {
    stroke-dashoffset: 200;
  }
}

.floating-icons {
  position: absolute;
  inset: 24px;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  z-index: 1;
}

.floating-icons i {
  font-size: 22px;
  color: var(--primary);
  background: rgba(37, 99, 235, 0.12);
  border-radius: 50%;
  width: 48px;
  height: 48px;
  display: grid;
  place-items: center;
  animation: float 4s ease-in-out infinite;
}

.floating-icons i:nth-child(2) {
  animation-delay: 0.6s;
}

.floating-icons i:nth-child(3) {
  animation-delay: 1.2s;
}

.floating-icons i:nth-child(4) {
  animation-delay: 1.8s;
}

@keyframes float {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-10px);
  }
}

.glass-panel {
  position: relative;
  margin-top: 140px;
  padding: 24px;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.8);
  border: 1px solid var(--border);
  backdrop-filter: blur(12px);
  z-index: 2;
}

.glass-panel h3 {
  margin-bottom: 8px;
}

.glass-panel p {
  color: var(--muted);
  margin-bottom: 16px;
}

.tags {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.tags span {
  font-size: 12px;
  padding: 4px 10px;
  background: #eef2ff;
  color: #4338ca;
  border-radius: 999px;
}

.wave {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 140px;
  fill: #f8fafc;
}

.section {
  padding: 90px 0;
  position: relative;
  z-index: 1;
}

.section.light {
  background: #f8fafc;
}

.section-title {
  text-align: center;
  margin-bottom: 48px;
}

.section-title h2 {
  font-size: clamp(26px, 3vw, 36px);
  margin-bottom: 12px;
}

.section-title p {
  color: var(--muted);
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 24px;
}

.card {
  background: white;
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 24px;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card i {
  color: var(--primary);
  font-size: 24px;
  margin-bottom: 12px;
}

.card h3 {
  margin-bottom: 10px;
}

.card p {
  color: var(--muted);
  font-size: 14px;
}

.card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow);
}

.timeline {
  display: grid;
  gap: 20px;
}

.step {
  background: white;
  border-radius: 16px;
  padding: 20px 24px;
  border: 1px solid var(--border);
  display: grid;
  gap: 8px;
}

.step span {
  font-weight: 700;
  color: var(--primary);
}

.cases {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
}

.case-card {
  background: white;
  border-radius: 18px;
  border: 1px solid var(--border);
  padding: 24px;
  box-shadow: 0 12px 24px rgba(15, 23, 42, 0.08);
}

.case-card p {
  color: var(--muted);
  margin-top: 8px;
  font-size: 14px;
}

.tech-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
  align-items: center;
}

.tech-text ul {
  margin-top: 16px;
  display: grid;
  gap: 10px;
  color: var(--muted);
}

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

.mini-card {
  background: white;
  border-radius: 14px;
  padding: 20px;
  border: 1px solid var(--border);
  display: flex;
  gap: 12px;
  align-items: center;
}

.mini-card i {
  color: var(--primary);
}

.contact {
  padding-bottom: 120px;
}

.contact-form {
  width: min(720px, 100%);
  margin: 0 auto;
  display: grid;
  gap: 16px;
  background: white;
  border-radius: 20px;
  padding: 28px;
  border: 1px solid var(--border);
}

.form-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
}

input,
textarea {
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 12px 14px;
  font-size: 14px;
  font-family: inherit;
}

.btn.full {
  width: 100%;
}

.site-footer {
  position: relative;
  padding: 28px 0 44px;
  color: var(--muted);
  background: #f8fafc;
  border-top: 1px solid var(--border);
}

.site-footer::before {
  content: "";
  position: absolute;
  top: 0;
  left: 50%;
  width: min(1200px, 92%);
  height: 1px;
  transform: translateX(-50%);
  background: linear-gradient(90deg, transparent, #cbd5f5, transparent);
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 24px;
  padding-bottom: 24px;
}

.footer-col {
  display: grid;
  gap: 12px;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
  color: var(--text);
}

.footer-brand img {
  height: 30px;
  object-fit: contain;
}

.footer-desc {
  font-size: 13px;
  color: var(--muted);
}

.footer-title {
  font-size: 14px;
  color: var(--text);
}

.footer-list {
  display: grid;
  gap: 8px;
  font-size: 13px;
}

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

.footer-social a {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: white;
  border: 1px solid var(--border);
  color: var(--primary);
  transition: all 0.2s ease;
}

.footer-social a:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 20px rgba(37, 99, 235, 0.15);
}

.footer-bottom {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 12px 24px;
  align-items: center;
  font-size: 12px;
  padding-top: 16px;
  border-top: 1px solid rgba(148, 163, 184, 0.3);
}

.footer-links {
  display: flex;
  gap: 16px;
}

.footer-links a {
  color: var(--muted);
  transition: color 0.2s ease;
}

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

@media (max-width: 768px) {
  .menu {
    display: none;
  }

  .hero-actions {
    flex-direction: column;
    align-items: flex-start;
  }

  .glow-card {
    padding: 28px;
  }

  .glass-panel {
    margin-top: 110px;
  }
}