:root {
  color-scheme: light;
  --ink: #071f27;
  --muted: #5c6870;
  --bg: #f7f3ea;
  --paper: #fffdf8;
  --line: #ded6c7;
  --blue: #086bbd;
  --green: #09936d;
  --orange: #f37b12;
  --purple: #7b2c88;
  --shadow: 0 22px 60px rgba(7, 31, 39, 0.12);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background:
    linear-gradient(180deg, rgba(255, 253, 248, 0.7), rgba(247, 243, 234, 0.94)),
    var(--bg);
  color: var(--ink);
  font-family:
    -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB",
    "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
  letter-spacing: 0;
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  width: min(1180px, calc(100% - 32px));
  min-height: 74px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  margin: 0 auto;
  padding: 14px 0;
  background: rgba(247, 243, 234, 0.82);
  backdrop-filter: blur(18px);
}

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

.brand img {
  width: 46px;
  height: 46px;
  object-fit: contain;
}

nav {
  display: flex;
  gap: 22px;
  color: var(--muted);
  font-size: 15px;
}

main {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
}

.hero {
  min-height: calc(100vh - 90px);
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(320px, 0.92fr);
  align-items: center;
  gap: 46px;
  padding: 58px 0 72px;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--orange);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

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

h1 {
  max-width: 760px;
  margin-bottom: 14px;
  font-size: clamp(48px, 7.3vw, 92px);
  line-height: 0.98;
  font-weight: 850;
  letter-spacing: 0;
}

.subtitle {
  margin-bottom: 28px;
  color: var(--green);
  font-size: clamp(22px, 3.6vw, 36px);
  font-weight: 800;
}

.lede {
  max-width: 720px;
  color: var(--muted);
  font-size: 20px;
  line-height: 1.78;
}

.hero-actions {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 34px;
}

.primary-button,
.secondary-button {
  min-height: 52px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  padding: 0 24px;
  font-weight: 800;
  transition:
    transform 0.18s ease,
    box-shadow 0.18s ease,
    background 0.18s ease;
}

.primary-button {
  background: var(--ink);
  color: #fff;
  box-shadow: 0 16px 34px rgba(7, 31, 39, 0.18);
}

.secondary-button {
  border: 1px solid var(--line);
  background: rgba(255, 253, 248, 0.72);
}

.primary-button:hover,
.secondary-button:hover {
  transform: translateY(-1px);
}

.hero-logo {
  display: grid;
  place-items: center;
  padding: 26px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--paper);
  box-shadow: var(--shadow);
}

.hero-logo img {
  width: min(100%, 460px);
  height: auto;
  display: block;
}

.metrics {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
  margin-bottom: 36px;
}

.metrics div,
.tool-panel,
.steps div,
.download-section,
.path-grid article {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 253, 248, 0.78);
  box-shadow: 0 14px 36px rgba(7, 31, 39, 0.06);
}

.metrics div {
  min-height: 108px;
  display: grid;
  align-content: center;
  padding: 18px;
}

.metrics strong {
  display: block;
  margin-bottom: 4px;
  font-size: 34px;
  line-height: 1;
}

.metrics span {
  color: var(--muted);
  font-weight: 700;
}

.section {
  padding: 58px 0;
}

.section-heading {
  max-width: 760px;
  margin-bottom: 24px;
}

.section-heading h2,
.download-section h2 {
  margin-bottom: 0;
  font-size: clamp(34px, 4.8vw, 58px);
  line-height: 1.08;
  letter-spacing: 0;
}

.path-grid,
.tool-columns,
.steps {
  display: grid;
  gap: 14px;
}

.path-grid,
.tool-columns {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.path-grid article,
.tool-panel,
.steps div {
  padding: 26px;
}

.path-number {
  display: inline-block;
  margin-bottom: 18px;
  color: var(--blue);
  font-size: 14px;
  font-weight: 900;
}

.path-grid h3,
.tool-panel h3,
.steps h3 {
  margin-bottom: 10px;
  font-size: 24px;
  line-height: 1.22;
}

.path-grid p,
.download-section p,
.steps p {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.75;
}

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

.tool-panel li {
  position: relative;
  padding-left: 20px;
  color: #26383e;
  font-size: 17px;
  line-height: 1.5;
}

.tool-panel li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.65em;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--green);
}

.steps {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.steps span {
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  margin-bottom: 18px;
  border-radius: 50%;
  background: var(--ink);
  color: #fff;
  font-weight: 900;
}

.download-section {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  margin: 48px 0 72px;
  padding: 32px;
  background:
    linear-gradient(135deg, rgba(8, 107, 189, 0.09), rgba(9, 147, 109, 0.08)),
    var(--paper);
}

.download-section > div {
  max-width: 720px;
}

footer {
  width: min(1180px, calc(100% - 32px));
  min-height: 88px;
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 0 auto;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-weight: 700;
}

footer img {
  width: 42px;
  height: 42px;
  object-fit: contain;
}

@media (max-width: 860px) {
  .site-header {
    width: min(100% - 22px, 720px);
  }

  nav {
    display: none;
  }

  main {
    width: min(100% - 22px, 720px);
  }

  .hero {
    min-height: auto;
    grid-template-columns: 1fr;
    gap: 28px;
    padding: 28px 0 44px;
  }

  .hero-logo {
    padding: 18px;
  }

  .hero-logo img {
    width: min(100%, 330px);
  }

  .metrics,
  .path-grid,
  .tool-columns,
  .steps {
    grid-template-columns: 1fr;
  }

  .section {
    padding: 40px 0;
  }

  .download-section {
    align-items: stretch;
    flex-direction: column;
  }

  .download-section .primary-button,
  .hero-actions .primary-button,
  .hero-actions .secondary-button {
    width: 100%;
  }
}

@media (max-width: 480px) {
  .brand span {
    font-size: 15px;
  }

  .site-header {
    min-height: 64px;
  }

  .brand img {
    width: 38px;
    height: 38px;
  }

  h1 {
    font-size: 44px;
  }

  .lede {
    font-size: 17px;
  }

  .path-grid article,
  .tool-panel,
  .steps div,
  .download-section {
    padding: 20px;
  }
}