:root {
  color-scheme: light;
  --page: #f2f8f1;
  --surface: #ffffff;
  --ink: #101a14;
  --muted: #607066;
  --line: #d2dfd1;
  --green: #167a43;
  --green-dark: #11271a;
  --mint: #baf0cf;
  --orange: #ff7324;
  --blue: #2f62e8;
  --blue-soft: #dce8ff;
  --peach: #ffc5a7;
  --shadow: 0 28px 70px rgba(24, 47, 32, 0.13);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: #e8ebe8;
  color: var(--ink);
  font-family:
    "Noto Sans SC",
    "Microsoft YaHei",
    "PingFang SC",
    Arial,
    sans-serif;
}

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

.page-shell {
  width: min(100%, 1440px);
  margin: 0 auto;
  background: var(--page);
}

.hero {
  min-height: 100vh;
  padding: 52px clamp(24px, 6vw, 96px) 72px;
}

.site-header {
  display: flex;
  align-items: center;
  gap: 32px;
  min-height: 52px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-size: 20px;
  font-weight: 800;
}

.brand-mark {
  display: inline-grid;
  width: 36px;
  height: 36px;
  place-items: center;
  border-radius: 12px;
  background: var(--green-dark);
  color: var(--mint);
  font-size: 18px;
}

.site-nav {
  display: flex;
  gap: 26px;
  margin-left: auto;
  color: var(--muted);
  font-size: 14px;
  font-weight: 600;
}

.site-nav a:hover {
  color: var(--ink);
}

.header-action,
.workflow-action,
.install-action {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 28px;
  border-radius: 999px;
  background: var(--green-dark);
  color: #ffffff;
  font-size: 14px;
  font-weight: 800;
  white-space: nowrap;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(340px, 520px);
  gap: clamp(36px, 7vw, 96px);
  align-items: start;
  margin-top: 86px;
}

.section-kicker {
  margin: 0 0 22px;
  color: var(--green);
  font-size: 15px;
  font-weight: 800;
}

.hero h1 {
  max-width: 710px;
  margin: 0;
  font-size: clamp(46px, 6.6vw, 88px);
  font-weight: 900;
  line-height: 1.08;
  letter-spacing: 0;
  text-decoration-line: underline;
  text-decoration-color: #1d8cff;
  text-decoration-thickness: 6px;
  text-underline-offset: -2px;
}

.hero-lead {
  max-width: 560px;
  margin: 30px 0 0;
  color: var(--muted);
  font-size: 21px;
  line-height: 1.7;
}

.progress-panel {
  min-height: 300px;
  padding: 48px;
  border-radius: 32px;
  background: var(--green-dark);
  color: #ffffff;
  box-shadow: var(--shadow);
}

.panel-title-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.panel-title-row h2 {
  margin: 0;
  font-size: 29px;
  line-height: 1.2;
}

.panel-title-row span {
  color: var(--mint);
  font-size: 14px;
  font-weight: 800;
}

.progress-bar {
  height: 16px;
  margin-top: 56px;
  overflow: hidden;
  border-radius: 999px;
  background: rgba(186, 240, 207, 0.22);
}

.progress-bar span {
  display: block;
  width: 74%;
  height: 100%;
  border-radius: inherit;
  background: var(--mint);
}

.progress-panel p {
  margin: 28px 0 0;
  color: var(--mint);
  font-size: 19px;
  font-weight: 800;
}

.feature-grid {
  display: grid;
  grid-template-columns: minmax(240px, 380px) minmax(220px, 300px) minmax(260px, 384px);
  gap: 40px;
  align-items: stretch;
  margin-top: 72px;
}

.feature-card {
  min-height: 230px;
  padding: 34px;
  border: 1px solid var(--line);
  border-radius: 28px;
  background: var(--surface);
  box-shadow: var(--shadow);
}

.feature-card h2 {
  margin: 0;
  font-size: 30px;
  line-height: 1.2;
}

.feature-card p {
  max-width: 270px;
  margin: 22px 0 0;
  color: var(--muted);
  font-size: 17px;
  line-height: 1.65;
}

.feature-card-large {
  position: relative;
  min-height: 260px;
}

.feature-tile {
  position: absolute;
  right: 48px;
  top: 40px;
  width: 88px;
  height: 88px;
  border-radius: 24px;
}

.feature-tile-orange {
  background: var(--orange);
}

.image-swatches {
  display: flex;
  gap: 16px;
  margin-top: 42px;
}

.image-swatches span {
  width: 48px;
  height: 48px;
  border-radius: 12px;
}

.image-swatches span:nth-child(1) {
  background: var(--mint);
}

.image-swatches span:nth-child(2) {
  background: var(--blue-soft);
}

.image-swatches span:nth-child(3) {
  background: var(--peach);
}

.store-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 42px;
}

.store-tags span {
  display: inline-flex;
  min-height: 34px;
  align-items: center;
  justify-content: center;
  padding: 0 22px;
  border-radius: 999px;
  background: #e5f8ec;
  color: var(--green);
  font-size: 14px;
  font-weight: 800;
}

.store-tags span:nth-child(2) {
  background: #e7efff;
  color: var(--blue);
}

.workflow-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  margin-top: 56px;
  padding: 44px 36px;
  border: 1px solid var(--line);
  border-radius: 28px;
  background: var(--surface);
  box-shadow: var(--shadow);
}

.workflow-card h2 {
  margin: 0;
  font-size: 34px;
  line-height: 1.25;
}

.workflow-card p {
  margin: 18px 0 0;
  color: var(--muted);
  font-size: 18px;
  line-height: 1.55;
}

.workflow-action {
  background: var(--green);
}

.install-section {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
  padding: 72px clamp(24px, 6vw, 96px) 86px;
  background: var(--green-dark);
  color: #ffffff;
}

.install-section h2 {
  max-width: 680px;
  margin: 0;
  font-size: clamp(34px, 4vw, 56px);
  line-height: 1.15;
}

.install-section p:not(.section-kicker) {
  max-width: 620px;
  margin: 22px 0 0;
  color: rgba(255, 255, 255, 0.74);
  font-size: 18px;
  line-height: 1.65;
}

.install-steps {
  display: grid;
  gap: 12px;
  max-width: 640px;
  margin: 28px 0 0;
  padding-left: 22px;
  color: rgba(255, 255, 255, 0.82);
  font-size: 16px;
  line-height: 1.55;
}

.install-steps li::marker {
  color: var(--mint);
  font-weight: 900;
}

.install-action {
  background: #ffffff;
  color: var(--green-dark);
}

@media (max-width: 980px) {
  .hero {
    padding-top: 28px;
  }

  .site-header,
  .workflow-card,
  .install-section {
    align-items: flex-start;
    flex-direction: column;
  }

  .site-nav {
    margin-left: 0;
  }

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

  .progress-panel {
    min-height: 240px;
  }

  .feature-card,
  .feature-card-large {
    min-height: 210px;
  }
}

@media (max-width: 640px) {
  .hero {
    padding-inline: 18px;
  }

  .site-nav {
    display: none;
  }

  .brand {
    font-size: 17px;
  }

  .hero-grid {
    margin-top: 56px;
  }

  .hero h1 {
    font-size: 42px;
    text-decoration-thickness: 4px;
  }

  .hero-lead,
  .workflow-card p,
  .install-section p:not(.section-kicker) {
    font-size: 16px;
  }

  .progress-panel,
  .feature-card,
  .workflow-card {
    padding: 26px;
    border-radius: 22px;
  }

  .feature-tile {
    right: 26px;
    top: 28px;
    width: 60px;
    height: 60px;
  }
}