:root {
  --brand-blue: #1b8edc;
  --brand-blue-dark: #0d6fb0;
  --brand-orange: #f26b1d;
  --bg-light: #f6f9fc;
  --bg-surface: #ffffff;
  --text-main: #1f2a3d;
  --text-muted: #5a6b85;
  --card-bg: #ffffff;
  --border: rgba(0, 27, 62, 0.08);
  --shadow: 0 12px 30px rgba(17, 62, 110, 0.12);
  --shadow-hover: 0 20px 50px rgba(17, 62, 110, 0.18);
  --shadow-lg: 0 25px 60px rgba(17, 62, 110, 0.15);
  font-size: 16px;
  font-family: "Noto Sans SC", "Inter", "Microsoft YaHei", "PingFang SC", system-ui, -apple-system, sans-serif;
}

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

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes shimmer {
  0% { background-position: -1000px 0; }
  100% { background-position: 1000px 0; }
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.6; }
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: radial-gradient(circle at 20% 20%, rgba(27, 142, 220, 0.16), transparent 32%),
              radial-gradient(circle at 80% 10%, rgba(242, 107, 29, 0.08), transparent 28%),
              radial-gradient(circle at 50% 100%, rgba(27, 142, 220, 0.06), transparent 50%),
              var(--bg-light);
  color: var(--text-main);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  scroll-behavior: smooth;
}

img { max-width: 100%; display: block; }
a { color: var(--brand-blue-dark); text-decoration: none; }

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

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(16px) saturate(180%);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 4px 20px rgba(17, 62, 110, 0.06);
  transition: all 0.3s ease;
}
.topbar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 14px 0;
}

.brand {
  display: flex;
  align-items: center;
  gap: 14px;
}
.brand__logo {
  height: 46px;
  width: auto;
}
.brand__text { display: flex; flex-direction: column; gap: 4px; }
.brand__name { font-weight: 800; font-size: 1.1rem; letter-spacing: 0.5px; }
.brand__slogan { color: var(--text-muted); font-size: 0.85rem; }

.nav {
  display: flex;
  gap: 18px;
  font-weight: 600;
}
.nav a {
  padding: 8px 14px;
  border-radius: 999px;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  color: var(--text-main);
  position: relative;
  overflow: hidden;
}
.nav a::before {
  content: "";
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--brand-blue), var(--brand-orange));
  transition: all 0.3s ease;
  transform: translateX(-50%);
}
.nav a:hover {
  background: rgba(27, 142, 220, 0.10);
  color: var(--brand-blue-dark);
  transform: translateY(-1px);
}
.nav a:hover::before {
  width: 60%;
}

.topbar__actions { display: flex; gap: 10px; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 12px 24px;
  border-radius: 12px;
  font-weight: 700;
  font-size: 0.95rem;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
}
.btn::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.3);
  transform: translate(-50%, -50%);
  transition: width 0.6s ease, height 0.6s ease;
}
.btn:hover::before {
  width: 300px;
  height: 300px;
}
.btn--primary {
  background: linear-gradient(135deg, var(--brand-blue), #45b6ff);
  color: #fff;
  box-shadow: 0 8px 20px rgba(27, 142, 220, 0.35);
}
.btn--primary:hover {
  box-shadow: 0 12px 32px rgba(27, 142, 220, 0.45);
  transform: translateY(-2px);
}
.btn--ghost {
  border: 2px solid var(--border);
  background: #ffffff;
  color: var(--text-main);
}
.btn--ghost:hover {
  border-color: var(--brand-blue);
  background: rgba(27, 142, 220, 0.05);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(17, 62, 110, 0.12);
}
.btn:active { transform: translateY(0); }

.hero {
  position: relative;
  overflow: hidden;
  padding: 120px 0 90px;
}
.hero__bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
}
.hero__bg--grid {
  background: radial-gradient(circle at 10% 20%, rgba(27, 142, 220, 0.22), transparent 32%),
              radial-gradient(circle at 82% 8%, rgba(242, 107, 29, 0.12), transparent 30%),
              linear-gradient(120deg, rgba(0, 48, 94, 0.04) 1px, transparent 1px),
              linear-gradient(60deg, rgba(0, 48, 94, 0.04) 1px, transparent 1px);
  background-size: 100% 100%, 100% 100%, 32px 32px, 32px 32px;
  opacity: 0.9;
}
.hero__bg--orb {
  background: radial-gradient(circle at 70% 60%, rgba(27, 142, 220, 0.16), transparent 35%),
              radial-gradient(circle at 40% 80%, rgba(242, 107, 29, 0.08), transparent 30%);
}
.hero__content {
  position: relative;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 28px;
  align-items: start;
}
.hero h1 {
  font-size: clamp(2rem, 4vw, 3rem);
  margin: 12px 0;
  line-height: 1.2;
  background: linear-gradient(135deg, var(--text-main), var(--brand-blue-dark));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: fadeInUp 0.8s ease;
}
.hero .lead {
  color: var(--text-muted);
  max-width: 720px;
  font-size: 1.05rem;
  line-height: 1.7;
}
.hero__actions { display: flex; gap: 12px; margin-top: 18px; flex-wrap: wrap; }
.eyebrow {
  letter-spacing: 2px;
  text-transform: uppercase;
  background: linear-gradient(135deg, var(--brand-blue), var(--brand-orange));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-weight: 800;
  font-size: 0.85rem;
  position: relative;
  display: inline-block;
}
.eyebrow::after {
  content: "";
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 40px;
  height: 3px;
  background: linear-gradient(90deg, var(--brand-blue), var(--brand-orange));
  border-radius: 2px;
}
.badges { display: flex; gap: 10px; flex-wrap: wrap; margin: 12px 0; }
.badge {
  padding: 7px 14px;
  border-radius: 999px;
  border: 1px solid rgba(27,142,220,0.25);
  background: linear-gradient(135deg, rgba(27,142,220,0.12), rgba(69,182,255,0.08));
  color: var(--brand-blue-dark);
  font-weight: 600;
  font-size: 0.88rem;
  transition: all 0.3s ease;
  backdrop-filter: blur(10px);
}
.badge:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(27, 142, 220, 0.25);
  border-color: rgba(27,142,220,0.4);
}

.hero__stats { display: grid; gap: 14px; }
.stat-card {
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.95), rgba(255, 255, 255, 0.85));
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 20px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(10px);
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
}
.stat-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(27, 142, 220, 0.1), transparent);
  transition: left 0.6s ease;
}
.stat-card:hover::before {
  left: 100%;
}
.stat-card:hover {
  transform: translateY(-6px) scale(1.02);
  box-shadow: var(--shadow-hover);
  border-color: rgba(27, 142, 220, 0.3);
}
.stat-card__value {
  font-size: 1.8rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--brand-blue), var(--brand-orange));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.stat-card__label { color: var(--brand-blue-dark); font-weight: 700; margin: 6px 0 8px; font-size: 0.95rem; }
.stat-card__desc { color: var(--text-muted); margin: 0; line-height: 1.5; font-size: 0.9rem; }

.section { padding: 84px 0; }
.section--alt { background: linear-gradient(180deg, rgba(27, 142, 220, 0.06), rgba(246, 249, 252, 0.4)); }
.section__header { text-align: center; max-width: 760px; margin: 0 auto 32px; }
.section__header h2 { margin: 6px 0 10px; font-size: clamp(1.6rem, 3vw, 2.2rem); }
.section__desc { color: var(--text-muted); margin: 0; }

.cards { display: grid; gap: 18px; }
.cards--2 { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.cards--3 { grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }
.card {
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.98), rgba(255, 255, 255, 0.92));
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 24px;
  box-shadow: var(--shadow);
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
  backdrop-filter: blur(10px);
}
.card::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 100px;
  height: 100px;
  background: radial-gradient(circle, rgba(27, 142, 220, 0.15), transparent);
  border-radius: 50%;
  transform: translate(50%, -50%);
  transition: all 0.4s ease;
}
.card:hover {
  transform: translateY(-8px);
  border-color: rgba(27, 142, 220, 0.4);
  box-shadow: var(--shadow-hover);
}
.card:hover::after {
  width: 200px;
  height: 200px;
}
.card h3 { margin: 0 0 10px; }
.card p { margin: 0 0 10px; color: var(--text-muted); }

.list { padding-left: 16px; margin: 0; color: var(--text-muted); }
.list li { margin: 6px 0; }

.capabilities { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 16px; }
.capability {
  display: flex;
  gap: 14px;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.95), rgba(255, 255, 255, 0.85));
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 18px 20px;
  box-shadow: var(--shadow);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  backdrop-filter: blur(10px);
  position: relative;
  overflow: hidden;
}
.capability::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 3px;
  height: 0;
  background: linear-gradient(180deg, var(--brand-blue), var(--brand-orange));
  transition: height 0.3s ease;
}
.capability:hover::before {
  height: 100%;
}
.capability:hover {
  transform: translateX(4px);
  box-shadow: var(--shadow-hover);
  border-color: rgba(27, 142, 220, 0.3);
}
.capability__icon {
  width: 48px;
  height: 48px;
  min-width: 48px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--brand-blue), #45b6ff);
  position: relative;
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  justify-content: center;
}
.capability__icon::before {
  content: "";
  position: absolute;
  width: 60%;
  height: 60%;
  background: rgba(255, 255, 255, 0.25);
  border-radius: 4px;
}
.capability__icon--blockchain::before {
  width: 16px;
  height: 16px;
  border-radius: 3px;
  box-shadow: 8px 0 0 rgba(255,255,255,0.25), -8px 0 0 rgba(255,255,255,0.25), 0 8px 0 rgba(255,255,255,0.25), 0 -8px 0 rgba(255,255,255,0.25);
}
.capability__icon--data::before {
  width: 24px;
  height: 4px;
  border-radius: 2px;
  box-shadow: 0 -8px 0 rgba(255,255,255,0.25), 0 8px 0 rgba(255,255,255,0.25);
}
.capability__icon--cloud::before {
  width: 28px;
  height: 16px;
  border-radius: 8px 8px 4px 4px;
}
.capability__icon--solution::before {
  width: 24px;
  height: 24px;
  border: 3px solid rgba(255,255,255,0.3);
  border-radius: 50%;
  background: transparent;
  box-shadow: inset 0 0 0 3px rgba(255,255,255,0.25);
}
.capability:hover .capability__icon {
  transform: scale(1.1) rotate(5deg);
  box-shadow: 0 8px 20px rgba(27, 142, 220, 0.4);
}

.tag {
  display: inline-flex;
  padding: 7px 13px;
  border-radius: 999px;
  background: linear-gradient(135deg, rgba(27, 142, 220, 0.15), rgba(69, 182, 255, 0.1));
  color: var(--brand-blue-dark);
  margin-right: 6px;
  margin-top: 8px;
  font-weight: 600;
  font-size: 0.85rem;
  border: 1px solid rgba(27, 142, 220, 0.2);
  transition: all 0.3s ease;
  backdrop-filter: blur(5px);
}
.tag:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(27, 142, 220, 0.2);
  background: linear-gradient(135deg, rgba(27, 142, 220, 0.2), rgba(69, 182, 255, 0.15));
}

.timeline { position: relative; margin-top: 20px; }
.timeline::before {
  content: "";
  position: absolute;
  top: 0; left: 12px;
  width: 2px;
  height: 100%;
  background: linear-gradient(180deg, var(--brand-blue), rgba(27,142,220,0));
}
.timeline__item {
  position: relative;
  margin-left: 36px;
  padding: 18px 20px;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.98), rgba(255, 255, 255, 0.92));
  border: 1px solid var(--border);
  border-radius: 16px;
  box-shadow: var(--shadow);
  margin-bottom: 16px;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  backdrop-filter: blur(10px);
}
.timeline__item:hover {
  transform: translateX(6px);
  box-shadow: var(--shadow-hover);
  border-color: rgba(27, 142, 220, 0.35);
}
.timeline__dot {
  position: absolute;
  left: -26px;
  top: 20px;
  width: 16px; height: 16px;
  border-radius: 50%;
  border: 3px solid #ffffff;
  background: linear-gradient(135deg, var(--brand-blue), var(--brand-orange));
  box-shadow: 0 0 0 6px rgba(27,142,220,0.2);
  transition: all 0.3s ease;
  animation: pulse 2s infinite;
}
.timeline__item:hover .timeline__dot {
  transform: scale(1.2);
  box-shadow: 0 0 0 8px rgba(27,142,220,0.25);
}

.section--cta {
  background: linear-gradient(135deg, rgba(27,142,220,0.16), rgba(255,255,255,0.9));
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.cta {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  align-items: center;
  gap: 18px;
}
.cta__text h2 { margin: 0 0 10px; font-size: clamp(1.6rem, 3vw, 2.1rem); }
.cta__text p { margin: 0 0 12px; color: var(--text-muted); }
.cta__actions { display: flex; gap: 10px; flex-wrap: wrap; }
.contact-card {
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.98), rgba(255, 255, 255, 0.92));
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 22px 24px;
  box-shadow: var(--shadow-lg);
  transition: all 0.3s ease;
  backdrop-filter: blur(10px);
}
.contact-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 16px 40px rgba(17, 62, 110, 0.18);
  border-color: rgba(27, 142, 220, 0.3);
}
.contact-list { list-style: none; padding: 0; margin: 10px 0 0; display: grid; gap: 8px; }
.contact-list__label { display: inline-block; min-width: 86px; color: var(--text-muted); font-weight: 600; }

.footer {
  padding: 24px 0;
  background: #eaf3fb;
  border-top: 1px solid var(--border);
}
.footer__inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}
.footer__meta { color: var(--text-muted); display: flex; gap: 10px; flex-wrap: wrap; }

.brand--footer .brand__logo { height: 40px; }

[data-scroll] {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}
[data-scroll].is-visible {
  opacity: 1;
  transform: translateY(0);
}

.section__header [data-scroll] {
  transition-delay: 0.1s;
}

.cards [data-scroll]:nth-child(1) { transition-delay: 0.1s; }
.cards [data-scroll]:nth-child(2) { transition-delay: 0.2s; }
.cards [data-scroll]:nth-child(3) { transition-delay: 0.3s; }
.cards [data-scroll]:nth-child(4) { transition-delay: 0.4s; }

.capabilities [data-scroll]:nth-child(1) { transition-delay: 0.1s; }
.capabilities [data-scroll]:nth-child(2) { transition-delay: 0.2s; }
.capabilities [data-scroll]:nth-child(3) { transition-delay: 0.3s; }
.capabilities [data-scroll]:nth-child(4) { transition-delay: 0.4s; }

@media (max-width: 900px) {
  .nav { display: none; }
  .topbar__actions { display: none; }
  .hero { padding-top: 96px; }
}

@media (max-width: 640px) {
  .topbar__inner { flex-wrap: wrap; }
  .brand__logo { height: 38px; }
  .timeline::before { left: 10px; }
  .timeline__item { margin-left: 28px; }
  .timeline__dot { left: -22px; }
}