:root {
  --blue: #1167e8;
  --green: #4df48c;
  --deep: #10253a;
  --ink: #15202b;
  --muted: #66798c;
  --line: #dfe9f2;
  --soft: #f5fbff;
  --mint: #ecfff5;
  --shadow: 0 18px 48px rgba(14, 62, 105, .13);
}

* {
  box-sizing: border-box;
}

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

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

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

.nav {
  position: sticky;
  top: 0;
  z-index: 20;
  height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 56px;
  background: rgba(255, 255, 255, .92);
  border-bottom: 1px solid rgba(223, 233, 242, .82);
  backdrop-filter: blur(14px);
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  color: var(--blue);
  font-size: 26px;
  letter-spacing: .02em;
}

.brand-logo {
  width: 42px;
  height: 42px;
  object-fit: contain;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 30px;
  color: #25445f;
  font-size: 15px;
  font-weight: 600;
}

.nav-links a.active,
.nav-links a:hover {
  color: var(--blue);
}

.nav-cta,
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 0 22px;
  border-radius: 999px;
  color: #fff;
  background: linear-gradient(135deg, var(--blue), #22d677);
  font-weight: 700;
  box-shadow: 0 10px 24px rgba(17, 103, 232, .18);
}

.btn.secondary {
  color: var(--blue);
  background: #fff;
  border: 1px solid rgba(17, 103, 232, .24);
  box-shadow: none;
}

.hero {
  min-height: 720px;
  position: relative;
  display: grid;
  align-items: center;
  overflow: hidden;
  background: #e8fff2;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(255,255,255,.94) 0%, rgba(255,255,255,.78) 43%, rgba(255,255,255,.12) 72%),
    url("../images/hero-products.jpg") center right / auto 112% no-repeat;
}

.hero-content {
  position: relative;
  z-index: 1;
  width: min(1180px, calc(100% - 80px));
  margin: 0 auto;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: #0c6f43;
  font-weight: 800;
  font-size: 14px;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.eyebrow::before {
  content: "";
  width: 32px;
  height: 2px;
  background: var(--green);
}

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

h1 {
  width: min(620px, 100%);
  margin-bottom: 24px;
  color: var(--deep);
  font-size: 64px;
  line-height: 1.08;
  font-weight: 900;
}

.hero p {
  width: min(560px, 100%);
  color: #42566a;
  font-size: 20px;
  line-height: 1.9;
}

.hero-actions {
  display: flex;
  gap: 16px;
  margin-top: 34px;
}

.hero-metrics {
  display: grid;
  grid-template-columns: repeat(3, 136px);
  gap: 16px;
  margin-top: 48px;
}

.metric {
  padding: 18px 16px;
  background: rgba(255, 255, 255, .78);
  border: 1px solid rgba(255, 255, 255, .9);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.metric strong {
  display: block;
  color: var(--blue);
  font-size: 26px;
}

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

.section {
  padding: 92px 56px;
}

.section.mint {
  background: linear-gradient(180deg, #f7fffb, #ebfff5);
}

.section.blueprint {
  color: #fff;
  background:
    linear-gradient(90deg, rgba(9, 34, 62, .9), rgba(11, 80, 128, .62)),
    url("../images/lab.jpg") center / cover no-repeat;
}

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

.section-head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 30px;
  margin-bottom: 44px;
}

.section-title h2 {
  margin-bottom: 12px;
  color: var(--deep);
  font-size: 42px;
  line-height: 1.2;
}

.section-title p {
  max-width: 620px;
  color: var(--muted);
  font-size: 17px;
  line-height: 1.8;
}

.blueprint .section-title h2,
.blueprint .section-title p {
  color: #fff;
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

.product-card {
  min-height: 420px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  box-shadow: 0 18px 46px rgba(28, 75, 107, .08);
  overflow: hidden;
}

.product-card img {
  height: 230px;
  margin: 0 auto 22px;
  object-fit: contain;
}

.product-card h3 {
  margin-bottom: 10px;
  color: var(--deep);
  font-size: 23px;
}

.product-card p {
  min-height: 54px;
  color: var(--muted);
  line-height: 1.75;
}

.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 18px;
}

.tag {
  padding: 6px 10px;
  border-radius: 999px;
  color: #0a8050;
  background: #eafff2;
  font-size: 13px;
  font-weight: 700;
}

.split {
  display: grid;
  grid-template-columns: 1.05fr .95fr;
  gap: 56px;
  align-items: center;
}

.feature-image {
  min-height: 520px;
  display: grid;
  place-items: center;
  border-radius: 8px;
  background: linear-gradient(150deg, #f5fffb, #ffffff);
  border: 1px solid var(--line);
  overflow: hidden;
}

.feature-image img {
  max-height: 520px;
  object-fit: contain;
}

.feature-list {
  display: grid;
  gap: 14px;
  margin-top: 26px;
}

.feature-item {
  display: grid;
  grid-template-columns: 46px 1fr;
  gap: 16px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, .78);
}

.feature-icon {
  width: 46px;
  height: 46px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  color: #fff;
  background: linear-gradient(145deg, var(--blue), var(--green));
  font-weight: 900;
}

.feature-item h3 {
  margin-bottom: 4px;
  font-size: 18px;
}

.feature-item p {
  margin-bottom: 0;
  color: var(--muted);
  line-height: 1.7;
}

.tech-diagram {
  position: relative;
  min-height: 500px;
  display: grid;
  place-items: center;
}

.tech-diagram img {
  width: min(560px, 90%);
  filter: drop-shadow(0 28px 48px rgba(36, 215, 117, .22));
}

.callout {
  position: absolute;
  width: 220px;
  padding: 16px;
  border-radius: 8px;
  background: rgba(255, 255, 255, .94);
  border: 1px solid rgba(91, 230, 151, .4);
  box-shadow: var(--shadow);
}

.callout strong {
  display: block;
  color: var(--blue);
  margin-bottom: 6px;
}

.callout span {
  color: var(--muted);
  font-size: 14px;
  line-height: 1.6;
}

.callout.one {
  top: 28px;
  left: 20px;
}

.callout.two {
  top: 120px;
  right: 10px;
}

.callout.three {
  bottom: 36px;
  left: 62px;
}

.timeline {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
  margin-top: 46px;
}

.timeline-item {
  min-height: 160px;
  padding: 22px;
  border-radius: 8px;
  background: rgba(255, 255, 255, .12);
  border: 1px solid rgba(255, 255, 255, .22);
}

.timeline-item strong {
  display: block;
  color: var(--green);
  font-size: 26px;
  margin-bottom: 12px;
}

.timeline-item p {
  color: rgba(255, 255, 255, .84);
  line-height: 1.7;
}

.contact-panel {
  display: grid;
  grid-template-columns: 1fr 420px;
  gap: 28px;
  align-items: stretch;
}

.contact-info,
.contact-form {
  padding: 34px;
  border-radius: 8px;
  border: 1px solid var(--line);
  background: #fff;
  box-shadow: var(--shadow);
}

.info-row {
  display: grid;
  grid-template-columns: 90px 1fr;
  gap: 18px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
}

.info-row:last-child {
  border-bottom: 0;
}

.info-row strong {
  color: var(--deep);
}

.info-row span {
  color: var(--muted);
}

.field {
  display: grid;
  gap: 8px;
  margin-bottom: 16px;
}

.field label {
  color: #36526b;
  font-size: 14px;
  font-weight: 700;
}

.field input,
.field textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 13px 14px;
  font: inherit;
}

.field textarea {
  min-height: 120px;
  resize: vertical;
}

.page-hero {
  padding: 96px 56px 72px;
  background: linear-gradient(135deg, #f4fbff, #effff5);
}

.page-hero .container {
  display: grid;
  grid-template-columns: 1fr 460px;
  gap: 54px;
  align-items: center;
}

.page-hero h1 {
  font-size: 54px;
}

.page-hero p {
  color: var(--muted);
  font-size: 18px;
  line-height: 1.9;
}

.page-hero img {
  max-height: 420px;
  margin: 0 auto;
  object-fit: contain;
}

.category-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 30px;
}

.category-tabs span {
  padding: 10px 16px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: #356079;
  background: #fff;
  font-weight: 700;
}

.category-tabs .active {
  color: #fff;
  border-color: transparent;
  background: var(--blue);
}

.detail-band {
  display: grid;
  grid-template-columns: .95fr 1.05fr;
  gap: 56px;
  align-items: center;
}

.detail-copy h2 {
  font-size: 42px;
}

.detail-copy p {
  color: var(--muted);
  line-height: 1.9;
  font-size: 17px;
}

.proof-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.proof {
  padding: 24px;
  min-height: 170px;
  border-radius: 8px;
  background: #fff;
  border: 1px solid var(--line);
}

.proof strong {
  display: block;
  color: var(--blue);
  font-size: 28px;
  margin-bottom: 10px;
}

.proof p {
  color: var(--muted);
  line-height: 1.7;
}

.footer {
  padding: 38px 56px;
  color: rgba(255, 255, 255, .76);
  background: #10253a;
}

.footer .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}

.icp-record {
  color: rgba(255, 255, 255, .76);
  white-space: nowrap;
}

.icp-record:hover {
  color: #fff;
}

@media (max-width: 920px) {
  .nav {
    height: auto;
    padding: 18px 22px;
    align-items: flex-start;
    gap: 18px;
  }

  .nav-links {
    gap: 14px;
    flex-wrap: wrap;
    justify-content: flex-end;
  }

  .hero-content,
  .container {
    width: min(100% - 36px, 1180px);
  }

  .hero {
    min-height: 760px;
  }

  .hero::before {
    background:
      linear-gradient(180deg, rgba(255,255,255,.96) 0%, rgba(255,255,255,.78) 45%, rgba(255,255,255,.32) 100%),
      url("../images/hero-products.jpg") center bottom / 125% auto no-repeat;
  }

  h1,
  .page-hero h1 {
    font-size: 42px;
  }

  .section,
  .page-hero {
    padding-left: 0;
    padding-right: 0;
  }

  .product-grid,
  .split,
  .page-hero .container,
  .contact-panel,
  .detail-band,
  .proof-grid,
  .timeline {
    grid-template-columns: 1fr;
  }

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

  .callout {
    position: static;
    width: auto;
    margin-top: 12px;
  }
}