:root {
  color-scheme: light;
  --ink: #17212b;
  --muted: #5e6d7c;
  --soft: #eef4f6;
  --line: #d7e4e6;
  --paper: #ffffff;
  --teal: #167b83;
  --teal-dark: #0f555b;
  --amber: #f0a43a;
  --coral: #df6d55;
  --shadow: 0 24px 70px rgba(23, 33, 43, .18);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: Inter, "Noto Sans SC", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

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

.site-header {
  position: fixed;
  z-index: 10;
  top: 0;
  left: 0;
  right: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  height: 72px;
  padding: 0 clamp(20px, 5vw, 72px);
  color: #fff;
  transition: background .22s ease, border-color .22s ease, box-shadow .22s ease, color .22s ease;
}

.brand,
.nav,
.header-action {
  display: flex;
  align-items: center;
}

.brand {
  gap: 10px;
  font-weight: 800;
}

.brand-logo {
  width: 34px;
  height: 34px;
  border-radius: 8px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, .16);
}

.nav {
  gap: 28px;
  color: rgba(255, 255, 255, .86);
  font-size: 14px;
  font-weight: 700;
}

.header-action,
.primary-action,
.secondary-action {
  min-height: 44px;
  border-radius: 6px;
  font-weight: 800;
}

.header-action {
  padding: 0 18px;
  color: #103f43;
  background: #fff;
  transition: background .22s ease, color .22s ease;
}

.site-header.is-scrolled {
  color: var(--ink);
  background: rgba(255, 255, 255, .94);
  border-bottom: 1px solid var(--line);
  box-shadow: 0 10px 34px rgba(23, 33, 43, .08);
  backdrop-filter: blur(16px);
}

.site-header.is-scrolled .nav {
  color: var(--muted);
}

.site-header.is-scrolled .header-action {
  color: #fff;
  background: var(--teal);
}

.hero {
  position: relative;
  min-height: 92vh;
  overflow: hidden;
  display: grid;
  align-items: end;
  padding: 120px clamp(20px, 6vw, 88px) 86px;
  color: #fff;
  background: #14363b;
}

.hero-image,
.hero-overlay {
  position: absolute;
  inset: 0;
}

.hero-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-overlay {
  background:
    linear-gradient(90deg, rgba(12, 38, 43, .94) 0%, rgba(12, 38, 43, .74) 41%, rgba(12, 38, 43, .16) 100%),
    linear-gradient(0deg, rgba(12, 38, 43, .72) 0%, rgba(12, 38, 43, .05) 42%);
}

.hero-content {
  position: relative;
  max-width: 720px;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--amber);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: .12em;
  text-transform: uppercase;
}

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

h1 {
  margin-bottom: 20px;
  font-size: clamp(56px, 9vw, 118px);
  line-height: .9;
  letter-spacing: 0;
}

.hero-copy {
  max-width: 620px;
  margin-bottom: 32px;
  color: rgba(255, 255, 255, .88);
  font-size: clamp(18px, 2vw, 24px);
  line-height: 1.65;
}

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

.primary-action,
.secondary-action {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 22px;
}

.primary-action {
  color: #10282c;
  background: #fff;
}

.secondary-action {
  color: #fff;
  border: 1px solid rgba(255, 255, 255, .52);
}

.section {
  padding: 88px clamp(20px, 6vw, 88px);
}

.section-heading {
  max-width: 760px;
  margin-bottom: 36px;
}

h2 {
  margin-bottom: 0;
  font-size: clamp(32px, 5vw, 58px);
  line-height: 1.08;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}

.feature-card {
  min-height: 240px;
  padding: 26px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fbfdfd;
}

.feature-icon {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  margin-bottom: 24px;
  border-radius: 8px;
  color: #fff;
  background: var(--teal);
  font-weight: 800;
}

h3 {
  margin-bottom: 12px;
  font-size: 20px;
}

.feature-card p,
.privacy-list p,
.steps span {
  color: var(--muted);
  line-height: 1.7;
}

.workflow-band {
  background: var(--soft);
}

.workflow {
  display: grid;
  grid-template-columns: minmax(0, .82fr) minmax(320px, 1fr);
  gap: 56px;
  align-items: start;
}

.steps {
  display: grid;
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: step;
}

.steps li {
  display: grid;
  grid-template-columns: 64px minmax(0, 1fr);
  gap: 18px;
  align-items: start;
  min-height: 104px;
  padding: 18px 20px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}

.steps li::before {
  counter-increment: step;
  content: counter(step);
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  color: #fff;
  background: var(--coral);
  font-weight: 800;
}

.steps strong,
.steps span {
  display: block;
}

.steps strong {
  margin: 4px 0 10px;
  font-size: 18px;
  line-height: 1.35;
}

.steps span {
  max-width: 620px;
}

.privacy {
  display: grid;
  grid-template-columns: minmax(0, .8fr) minmax(320px, 1fr);
  gap: 56px;
}

.privacy-list {
  display: grid;
  gap: 12px;
  align-content: start;
}

.privacy-list p {
  margin: 0;
  padding: 20px 22px;
  border-left: 4px solid var(--teal);
  background: #f7fbfb;
}

.cta-band {
  padding-top: 0;
}

.cta-panel {
  padding: clamp(28px, 5vw, 56px);
  border-radius: 8px;
  color: #fff;
  background: #123f45;
  box-shadow: var(--shadow);
}

.cta-panel h2 {
  margin-bottom: 18px;
}

.cta-panel p:not(.eyebrow) {
  max-width: 720px;
  margin-bottom: 28px;
  color: rgba(255, 255, 255, .82);
  font-size: 18px;
  line-height: 1.7;
}

.cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  align-items: center;
}

.cta-action {
  background: #fff;
}

.social-link {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 16px;
  border: 1px solid rgba(255, 255, 255, .34);
  border-radius: 6px;
  color: rgba(255, 255, 255, .9);
  font-weight: 800;
}

.footer {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  padding: 28px clamp(20px, 6vw, 88px);
  color: var(--muted);
  border-top: 1px solid var(--line);
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
}

@media (max-width: 920px) {
  .nav {
    display: none;
  }

  .feature-grid,
  .workflow,
  .privacy {
    grid-template-columns: 1fr;
  }

  .feature-card {
    min-height: auto;
  }
}

@media (max-width: 620px) {
  .site-header {
    height: 64px;
    padding-inline: 18px;
  }

  .header-action {
    display: none;
  }

  .hero {
    min-height: 88vh;
    padding: 104px 20px 54px;
  }

  .hero-copy {
    font-size: 17px;
  }

  .primary-action,
  .secondary-action,
  .social-link {
    width: 100%;
    justify-content: center;
  }

  .section {
    padding: 64px 20px;
  }

  .steps li {
    grid-template-columns: 48px minmax(0, 1fr);
    padding: 16px;
  }

  .footer {
    flex-direction: column;
  }
}