:root {
  --ink: #18212f;
  --muted: #5f6b7a;
  --line: #e3e8ef;
  --soft: #f6f8fb;
  --brand: #f59e0b;
  --brand-dark: #b45309;
  --green: #0f766e;
  --white: #fff;
  --shadow: 0 14px 34px rgba(15, 23, 42, 0.1);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
  color: var(--ink);
  background: var(--white);
  line-height: 1.7;
}

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

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

.topbar {
  background: #111827;
  color: #f9fafb;
  font-size: 14px;
}

.topbar-inner,
.nav-inner,
.container {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 20px;
}

.topbar-inner {
  min-height: 42px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

.topbar strong {
  color: #fbbf24;
  font-size: 18px;
}

.nav {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(255, 255, 255, 0.96);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(10px);
}

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

.logo {
  display: flex;
  flex-direction: column;
  font-weight: 800;
  letter-spacing: 0;
  color: var(--ink);
}

.logo span {
  color: var(--muted);
  font-size: 13px;
  font-weight: 500;
}

.menu {
  display: flex;
  align-items: center;
  gap: 24px;
  color: #334155;
  font-size: 15px;
  white-space: nowrap;
}

.menu a {
  padding: 28px 0;
  border-bottom: 3px solid transparent;
}

.menu a:hover,
.menu a.active {
  color: var(--brand-dark);
  border-bottom-color: var(--brand);
}

.hero {
  position: relative;
  min-height: 560px;
  background:
    linear-gradient(90deg, rgba(15, 23, 42, 0.86), rgba(15, 23, 42, 0.46), rgba(15, 23, 42, 0.18)),
    url("../11.jpg") center / cover no-repeat;
  color: var(--white);
}

.hero .container {
  min-height: 560px;
  display: grid;
  align-items: center;
}

.hero-content {
  width: min(720px, 100%);
  padding: 74px 0;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 16px;
  color: #fde68a;
  font-weight: 700;
  font-size: 15px;
}

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

h1 {
  margin-bottom: 20px;
  font-size: clamp(36px, 5vw, 58px);
  line-height: 1.14;
  letter-spacing: 0;
}

.hero p {
  margin-bottom: 28px;
  color: #eef2f7;
  font-size: 19px;
  max-width: 640px;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 12px 22px;
  border-radius: 6px;
  font-weight: 700;
  border: 1px solid transparent;
}

.btn-primary {
  background: var(--brand);
  color: #111827;
}

.btn-primary:hover {
  background: #fbbf24;
}

.btn-light {
  color: var(--white);
  border-color: rgba(255, 255, 255, 0.6);
  background: rgba(255, 255, 255, 0.1);
}

.btn-light:hover {
  background: rgba(255, 255, 255, 0.18);
}

.section {
  padding: 72px 0;
}

.section-soft {
  background: var(--soft);
}

.section-head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 28px;
  margin-bottom: 32px;
}

.section-head h2 {
  margin-bottom: 8px;
  font-size: 32px;
  line-height: 1.25;
}

.section-head p {
  margin: 0;
  color: var(--muted);
  max-width: 620px;
}

.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-top: -54px;
  position: relative;
  z-index: 2;
}

.stat {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 20px;
  box-shadow: var(--shadow);
}

.stat strong {
  display: block;
  color: var(--brand-dark);
  font-size: 26px;
  line-height: 1.2;
}

.stat span {
  color: var(--muted);
  font-size: 14px;
}

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

.grid-3 {
  grid-template-columns: repeat(3, 1fr);
}

.grid-2 {
  grid-template-columns: repeat(2, 1fr);
}

.card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 24px;
}

.card h3 {
  margin-bottom: 10px;
  font-size: 21px;
}

.card p {
  color: var(--muted);
  margin-bottom: 14px;
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 16px;
}

.tag {
  border: 1px solid #f1d19b;
  background: #fff7ed;
  color: #92400e;
  border-radius: 999px;
  padding: 4px 10px;
  font-size: 13px;
}

.feature {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  align-items: center;
}

.feature-media {
  min-height: 360px;
  border-radius: 8px;
  background: url("../22.jpg") center / cover no-repeat;
  box-shadow: var(--shadow);
}

.check-list {
  display: grid;
  gap: 12px;
  padding: 0;
  margin: 18px 0 0;
  list-style: none;
}

.check-list li {
  padding-left: 28px;
  position: relative;
  color: #344154;
}

.check-list li::before {
  content: "";
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--green);
  position: absolute;
  left: 4px;
  top: 10px;
}

.cta {
  background: #172033;
  color: var(--white);
}

.cta-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
}

.cta h2 {
  margin-bottom: 8px;
  font-size: 30px;
}

.cta p {
  color: #cbd5e1;
  margin: 0;
}

.page-hero {
  background:
    linear-gradient(90deg, rgba(15, 23, 42, 0.88), rgba(15, 23, 42, 0.42)),
    url("../33.jpg") center / cover no-repeat;
  color: var(--white);
  padding: 86px 0;
}

.page-hero h1 {
  margin-bottom: 12px;
  font-size: 44px;
}

.page-hero p {
  margin: 0;
  color: #e2e8f0;
  max-width: 720px;
  font-size: 18px;
}

.product-row {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 22px;
  padding: 24px 0;
  border-bottom: 1px solid var(--line);
}

.product-row h2 {
  margin: 0;
  font-size: 24px;
  color: var(--brand-dark);
}

.product-row p {
  color: var(--muted);
}

.contact-panel {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 24px;
}

.contact-item {
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
}

.contact-item strong {
  display: block;
  color: var(--muted);
  font-size: 14px;
}

.contact-item span,
.contact-item a {
  font-size: 20px;
  font-weight: 700;
}

.footer {
  background: #0f172a;
  color: #dbe4ef;
  padding: 38px 0;
  font-size: 14px;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}

.footer strong {
  color: var(--white);
}

@media (max-width: 860px) {
  .topbar-inner,
  .nav-inner,
  .section-head,
  .cta-inner,
  .footer-inner {
    align-items: flex-start;
    flex-direction: column;
  }

  .nav {
    position: static;
  }

  .menu {
    width: 100%;
    overflow-x: auto;
    gap: 18px;
  }

  .menu a {
    padding: 0 0 14px;
  }

  .hero,
  .hero .container {
    min-height: 520px;
  }

  .stats,
  .grid-3,
  .grid-2,
  .feature,
  .contact-panel,
  .product-row {
    grid-template-columns: 1fr;
  }

  .stats {
    margin-top: 20px;
  }

  .section {
    padding: 52px 0;
  }

  .page-hero {
    padding: 58px 0;
  }
}