:root {
  --bg: #f5f7fb;
  --card: #ffffff;
  --text: #172033;
  --muted: #647086;
  --line: #e2e8f0;
  --primary: #0284c7;
  --primary-dark: #075985;
  --accent: #f59e0b;
  --shadow: 0 22px 60px rgba(15, 23, 42, 0.12);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: Inter, "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.65;
}

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

.page {
  overflow: hidden;
  min-height: 100vh;
}

.container {
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
}

.header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255, 255, 255, 0.82);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(226, 232, 240, 0.72);
  box-shadow: 0 14px 40px rgba(15, 23, 42, 0.06);
}

.topbar {
  color: rgba(255, 255, 255, 0.82);
  background: linear-gradient(90deg, #0f172a, #0284c7);
  font-size: 13px;
}

.topbar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  min-height: 36px;
}

.topbar__note {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
}

.topbar__note::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 5px rgba(245, 158, 11, 0.16);
}

.topbar__links {
  display: flex;
  align-items: center;
  gap: 16px;
  white-space: nowrap;
}

.topbar__links a:hover {
  color: #fff;
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 82px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 800;
  letter-spacing: -0.03em;
  font-size: 24px;
}

.brand__text {
  display: grid;
  gap: 1px;
}

.brand__name {
  line-height: 1;
}

.brand__tagline {
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.brand__mark {
  display: grid;
  place-items: center;
  width: 56px;
  height: 56px;
  border-radius: 18px;
  background: #fff;
  box-shadow: 0 12px 28px rgba(15, 23, 42, 0.1);
  overflow: hidden;
}

.brand__logo {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
  padding: 6px;
}

.nav {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--muted);
  font-size: 15px;
  font-weight: 800;
  padding: 6px;
  border: 1px solid rgba(226, 232, 240, 0.82);
  border-radius: 999px;
  background: rgba(248, 250, 252, 0.9);
}

.nav a {
  padding: 9px 15px;
  border-radius: 999px;
  transition: 0.2s ease;
}

.nav a:hover {
  background: #fff;
  color: var(--primary);
  box-shadow: 0 8px 24px rgba(15, 23, 42, 0.08);
}

.header__actions {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: var(--muted);
}

.contact-pill {
  display: inline-flex;
  align-items: center;
  min-height: 38px;
  padding: 8px 13px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: #fff;
  transition: 0.2s ease;
}

.contact-pill:hover {
  border-color: rgba(2, 132, 199, 0.35);
  color: var(--primary);
  transform: translateY(-1px);
}

.header-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 10px 16px;
  border-radius: 999px;
  color: #fff;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  box-shadow: 0 14px 28px rgba(2, 132, 199, 0.22);
  font-weight: 900;
  transition: 0.2s ease;
}

.header-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 18px 34px rgba(2, 132, 199, 0.3);
}

.hero {
  position: relative;
  padding: 76px 0 68px;
  background:
    radial-gradient(circle at top right, rgba(56, 189, 248, 0.24), transparent 32%),
    linear-gradient(180deg, #ffffff 0%, #eef7ff 100%);
}

.hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 0.82fr);
  gap: 48px;
  align-items: center;
}

.kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 18px;
  padding: 8px 13px;
  border-radius: 999px;
  color: var(--primary-dark);
  background: rgba(2, 132, 199, 0.1);
  font-size: 14px;
  font-weight: 900;
}

.kicker::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  max-width: 760px;
  margin-bottom: 22px;
  font-size: clamp(42px, 6vw, 72px);
  line-height: 0.98;
  letter-spacing: -0.065em;
}

.hero__text {
  max-width: 680px;
  margin-bottom: 0;
  color: var(--muted);
  font-size: clamp(18px, 2vw, 21px);
}

.hero__image-card {
  padding: 20px;
  border-radius: 34px;
  background: rgba(255, 255, 255, 0.86);
  border: 1px solid rgba(255, 255, 255, 0.9);
  box-shadow: var(--shadow);
}

.hero__image-card img {
  display: block;
  width: 100%;
  height: 320px;
  object-fit: contain;
  padding: 18px;
  border-radius: 26px;
  background: #fff;
}

.section {
  padding: 76px 0;
}

.content-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
  gap: 28px;
  align-items: start;
}

.info-card,
.products-card,
.cta-card {
  border: 1px solid var(--line);
  border-radius: 30px;
  background: var(--card);
  box-shadow: 0 16px 42px rgba(15, 23, 42, 0.07);
}

.info-card {
  padding: 34px;
}

.info-card h2,
.products-card h2 {
  margin-bottom: 16px;
  font-size: clamp(30px, 4vw, 44px);
  line-height: 1.08;
  letter-spacing: -0.045em;
}

.info-card p {
  color: var(--muted);
  font-size: 17px;
}

.feature-list {
  display: grid;
  gap: 12px;
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
}

.feature-list li {
  padding: 15px 17px;
  border-radius: 18px;
  background: #f8fafc;
  border: 1px solid var(--line);
  font-weight: 800;
}

.products-card {
  padding: 30px;
}

.product-examples {
  display: grid;
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.product-examples li {
  display: grid;
  gap: 5px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 20px;
  background:
    radial-gradient(circle at top right, rgba(56, 189, 248, 0.12), transparent 34%),
    #fff;
}

.product-examples strong {
  font-size: 18px;
}

.product-examples span {
  color: var(--muted);
}

.cta-card {
  margin-top: 30px;
  padding: 38px;
  text-align: center;
  background:
    linear-gradient(135deg, rgba(15, 23, 42, 0.92), rgba(2, 132, 199, 0.92)),
    radial-gradient(circle at top right, rgba(245, 158, 11, 0.6), transparent 34%);
  color: #fff;
}

.cta-card h2 {
  margin-bottom: 12px;
  font-size: clamp(28px, 4vw, 42px);
  line-height: 1.08;
  letter-spacing: -0.04em;
}

.cta-card p {
  max-width: 680px;
  margin: 0 auto 24px;
  color: rgba(255, 255, 255, 0.78);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 50px;
  padding: 13px 24px;
  border-radius: 999px;
  color: var(--primary-dark);
  background: #fff;
  font-weight: 900;
  transition: 0.2s ease;
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 16px 32px rgba(15, 23, 42, 0.18);
}

.footer {
  padding: 68px 0 28px;
  color: rgba(255, 255, 255, 0.76);
  background:
    radial-gradient(circle at top right, rgba(56, 189, 248, 0.18), transparent 32%),
    linear-gradient(135deg, #0f172a, #082f49);
}

.footer__grid {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) 0.8fr 1fr;
  gap: 42px;
  align-items: start;
}

.footer__brand {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 18px;
  color: #fff;
  font-size: 24px;
  font-weight: 900;
  letter-spacing: -0.03em;
}

.footer__logo {
  width: 52px;
  height: 52px;
  object-fit: contain;
  padding: 6px;
  border-radius: 17px;
  background: #fff;
}

.footer p {
  margin-bottom: 0;
  max-width: 430px;
}

.footer h3 {
  margin: 0 0 16px;
  color: #fff;
  font-size: 18px;
}

.footer__links,
.footer__contacts {
  display: grid;
  gap: 10px;
}

.footer a {
  color: rgba(255, 255, 255, 0.82);
  transition: 0.2s ease;
}

.footer a:hover {
  color: #fff;
}

.footer__bottom {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  margin-top: 44px;
  padding-top: 22px;
  border-top: 1px solid rgba(255, 255, 255, 0.14);
  font-size: 14px;
}

.footer__credit {
  display: flex;
  justify-content: center;
  margin-top: 22px;
  padding-top: 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  font-size: 14px;
}

.footer__credit a {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: rgba(255, 255, 255, 0.72);
  font-weight: 800;
}

@media (max-width: 980px) {
  .header__inner,
  .footer__bottom {
    align-items: flex-start;
    flex-direction: column;
  }

  .header__actions,
  .topbar__inner {
    flex-wrap: wrap;
  }

  .header__inner {
    padding: 16px 0;
  }

  .hero__grid,
  .content-grid,
  .footer__grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 620px) {
  .container {
    width: min(100% - 28px, 1180px);
  }

  .topbar {
    display: none;
  }

  .nav {
    display: none;
  }

  .header__actions {
    width: 100%;
  }

  .contact-pill,
  .header-cta {
    flex: 1;
  }

  .hero {
    padding: 54px 0 56px;
  }

  .hero__image-card img {
    height: 240px;
  }

  .info-card,
  .products-card,
  .cta-card {
    padding: 24px;
  }
}