:root {
  color-scheme: light;
  --bg: #ffffff;
  --text: #17201e;
  --muted: #5d6966;
  --subtle: #edf2f1;
  --line: #dfe8e5;
  --accent: #0b7d77;
  --accent-soft: #e7f5f3;
  --max-width: 1080px;
  --page-gutter: clamp(20px, 5vw, 56px);
  font-family:
    "Inter", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui,
    -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  min-height: 100%;
  background: var(--bg);
}

body {
  min-height: 100vh;
  margin: 0;
  color: var(--text);
  background:
    linear-gradient(180deg, rgba(231, 245, 243, 0.52), rgba(255, 255, 255, 0) 320px),
    var(--bg);
  font-size: 16px;
  line-height: 1.7;
}

a {
  color: inherit;
}

.site-header,
.site-footer,
main {
  width: min(100%, calc(var(--max-width) + var(--page-gutter) * 2));
  margin: 0 auto;
  padding-right: var(--page-gutter);
  padding-left: var(--page-gutter);
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  min-height: 78px;
  border-bottom: 1px solid rgba(223, 232, 229, 0.82);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  font-size: 15px;
  font-weight: 700;
  line-height: 1.2;
  text-decoration: none;
  white-space: nowrap;
}

.brand-mark {
  display: grid;
  width: 32px;
  height: 32px;
  place-items: center;
  border: 1px solid rgba(11, 125, 119, 0.28);
  border-radius: 8px;
  color: var(--accent);
  background: rgba(255, 255, 255, 0.78);
  font-size: 17px;
  font-weight: 800;
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 4px;
}

.site-nav a {
  border-radius: 999px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 600;
  line-height: 1;
  padding: 10px 12px;
  text-decoration: none;
  transition:
    background 160ms ease,
    color 160ms ease;
}

.site-nav a:hover,
.site-nav a:focus-visible,
.site-nav a[aria-current="page"] {
  color: var(--accent);
  background: rgba(231, 245, 243, 0.95);
  outline: none;
}

.hero {
  min-height: 420px;
  display: grid;
  align-items: center;
  border-bottom: 1px solid var(--line);
}

.hero-content {
  max-width: 820px;
  padding: 82px 0 96px;
}

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

h1 {
  max-width: 900px;
  margin-bottom: 24px;
  font-size: clamp(42px, 7vw, 78px);
  font-weight: 760;
  letter-spacing: 0;
  line-height: 1.08;
}

.hero p {
  max-width: 760px;
  margin-bottom: 0;
  color: #3f4a48;
  font-size: clamp(20px, 2.4vw, 28px);
  line-height: 1.62;
}

.section {
  display: grid;
  grid-template-columns: minmax(120px, 0.28fr) 1fr;
  gap: clamp(24px, 5vw, 72px);
  padding: clamp(52px, 8vw, 86px) 0;
  border-bottom: 1px solid var(--line);
}

.section-label,
.contact-section h2 {
  margin: 0;
  color: var(--accent);
  font-size: 15px;
  font-weight: 800;
  line-height: 1.4;
}

.product-row {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 32px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.72);
  padding: clamp(26px, 4vw, 42px);
}

.product-row h2 {
  margin-bottom: 12px;
  font-size: clamp(28px, 3vw, 42px);
  font-weight: 760;
  letter-spacing: 0;
  line-height: 1.15;
}

.product-row p {
  max-width: 620px;
  margin-bottom: 0;
  color: var(--muted);
  font-size: 18px;
}

.notice {
  flex: 0 0 auto;
  border-left: 2px solid var(--accent);
  padding: 6px 0 6px 16px;
  color: var(--text) !important;
  font-size: 15px !important;
  font-weight: 700;
  line-height: 1.45;
}

.contact-section a {
  color: var(--text);
  font-size: clamp(18px, 4vw, 46px);
  font-weight: 720;
  line-height: 1.2;
  overflow-wrap: anywhere;
  text-decoration-color: rgba(11, 125, 119, 0.36);
  text-decoration-thickness: 2px;
  text-underline-offset: 8px;
}

.site-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding-top: 30px;
  padding-bottom: 30px;
  color: var(--muted);
  font-size: 14px;
}

.site-footer a {
  color: var(--muted);
  text-decoration: none;
}

.site-footer a:hover,
.site-footer a:focus-visible {
  color: var(--accent);
  outline: none;
}

.page-main {
  padding-top: clamp(54px, 8vw, 92px);
  padding-bottom: clamp(64px, 9vw, 110px);
}

.prose,
.support-panel {
  max-width: 820px;
}

.prose h1,
.support-panel h1 {
  margin-bottom: 12px;
  font-size: clamp(38px, 6vw, 64px);
}

.updated {
  margin-bottom: 44px;
  color: var(--muted);
  font-size: 14px;
}

.prose h2 {
  margin: 42px 0 12px;
  font-size: 22px;
  line-height: 1.35;
}

.prose p,
.support-panel p {
  color: #42504d;
  font-size: 17px;
}

.prose a,
.support-panel a {
  color: var(--accent);
  font-weight: 700;
}

.support-panel {
  padding: clamp(34px, 6vw, 58px);
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.74);
}

.support-panel p {
  max-width: 700px;
  margin-bottom: 28px;
}

.email-link {
  display: inline-flex;
  max-width: 100%;
  color: var(--text) !important;
  font-size: clamp(18px, 4vw, 38px);
  font-weight: 760;
  line-height: 1.18;
  overflow-wrap: anywhere;
  text-decoration-color: rgba(11, 125, 119, 0.36);
  text-decoration-thickness: 2px;
  text-underline-offset: 8px;
}

@media (max-width: 760px) {
  .site-header {
    align-items: flex-start;
    flex-direction: column;
    gap: 18px;
    padding-top: 18px;
    padding-bottom: 18px;
  }

  .site-nav {
    justify-content: flex-start;
  }

  .site-nav a {
    padding: 9px 10px;
  }

  .hero {
    min-height: 0;
  }

  .hero-content {
    padding: 62px 0 70px;
  }

  .section {
    grid-template-columns: 1fr;
    gap: 18px;
  }

  .product-row {
    flex-direction: column;
    gap: 22px;
  }

  .contact-section a,
  .email-link {
    font-size: 18px;
  }

  .site-footer {
    align-items: flex-start;
    flex-direction: column;
  }
}