:root {
  color-scheme: light;
  --ink: #18231f;
  --muted: #5f7069;
  --paper: #f7faf7;
  --card: #ffffff;
  --accent: #267a5b;
  --line: #dce8df;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 17px/1.75 -apple-system, BlinkMacSystemFont, "SF Pro Text", "PingFang TC", sans-serif;
}

a { color: var(--accent); }

.shell { max-width: 860px; margin: 0 auto; padding: 32px 22px 56px; }
.home-shell { max-width: 1040px; }
nav { display: flex; justify-content: space-between; gap: 18px; margin-bottom: 72px; font-weight: 650; }
nav a { text-decoration: none; }
.hero, .page-heading { max-width: 700px; margin-bottom: 34px; }
.eyebrow, .card-label { color: var(--accent); font-size: 13px; font-weight: 750; letter-spacing: .12em; text-transform: uppercase; }
h1 { margin: 8px 0 12px; font-size: clamp(2.3rem, 7vw, 4.8rem); line-height: 1.08; letter-spacing: -.04em; }
h2 { margin-top: 0; line-height: 1.25; }
.lead { color: var(--muted); font-size: 1.15rem; }
.card-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 16px; }
.card, .content-card { background: var(--card); border: 1px solid var(--line); border-radius: 20px; box-shadow: 0 10px 28px rgba(24, 55, 39, .05); }
.card { display: block; padding: 24px; text-decoration: none; color: inherit; transition: transform .15s ease, box-shadow .15s ease; }
.card:hover, .card:focus-visible { transform: translateY(-2px); box-shadow: 0 14px 32px rgba(24, 55, 39, .1); }
.card p, .content-card p { color: var(--muted); }
.content-card { margin: 18px 0; padding: 26px 28px; }
li + li { margin-top: 8px; }
.button { display: inline-block; padding: 9px 15px; border-radius: 999px; background: var(--accent); color: white; text-decoration: none; font-weight: 650; }
.button:hover, .button:focus-visible { background: #1f674c; }
.button:focus-visible, a:focus-visible { outline: 3px solid #a9d8c1; outline-offset: 3px; }
.home-nav { align-items: center; margin-bottom: 54px; }
.wordmark { color: var(--ink); font-weight: 750; }
.nav-links { display: flex; gap: 20px; }
.nav-links a { color: var(--muted); }
.home-hero { max-width: 790px; margin-bottom: 44px; }
.home-hero h1 { max-width: 680px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 26px; }
.button-secondary { background: transparent; border: 1px solid var(--accent); color: var(--accent); }
.button-secondary:hover, .button-secondary:focus-visible { background: #e9f4ed; }
.overview { margin: 0 0 64px; padding: 32px; }
.section-label { margin: 0 0 8px; color: var(--accent); font-size: 13px; font-weight: 750; letter-spacing: .1em; text-transform: uppercase; }
.tag-list { display: flex; flex-wrap: wrap; gap: 8px; margin: 24px 0 0; padding: 0; list-style: none; }
.tag-list li { margin: 0; padding: 5px 10px; border-radius: 999px; background: #e9f4ed; color: #205e47; font-size: .9rem; font-weight: 650; }
.page-section { margin: 0 0 64px; }
.section-heading { max-width: 690px; margin: 0 0 20px; }
.section-heading h2 { margin: 0 0 8px; font-size: clamp(1.7rem, 4vw, 2.4rem); }
.section-heading p:last-child { color: var(--muted); }
.detail-grid, .feature-grid, .package-grid { display: grid; gap: 16px; }
.detail-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.feature-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.package-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.info-card { padding: 24px; border: 1px solid var(--line); border-radius: 20px; background: var(--card); box-shadow: 0 10px 28px rgba(24, 55, 39, .05); }
.info-card h3 { margin: 0 0 10px; font-size: 1.15rem; }
.info-card p, .info-card li { color: var(--muted); }
.info-card ul { margin: 0; padding-left: 1.2em; }
.settings-path { margin-top: 18px; font-size: .94rem; }
.link-card { display: flex; flex-direction: column; justify-content: center; }
.link-card p { margin: 7px 0; }
.compact-card { margin: 0; }
.steps { margin: 0; padding-left: 1.35em; }
.support-callout { display: flex; align-items: center; justify-content: space-between; gap: 28px; margin-top: 64px; padding: 28px 32px; border-radius: 20px; background: #e9f4ed; }
.support-callout h2 { margin: 0 0 8px; }
.support-callout p:last-child { margin-bottom: 0; color: var(--muted); }
footer { margin-top: 54px; color: var(--muted); font-size: .9rem; }
@media (max-width: 760px) {
  .feature-grid { grid-template-columns: 1fr; }
}
@media (max-width: 560px) {
  .shell { padding: 24px 16px 44px; }
  nav { margin-bottom: 48px; }
  .home-nav { margin-bottom: 40px; }
  .content-card, .overview, .support-callout { padding: 21px; }
  .detail-grid, .package-grid { grid-template-columns: 1fr; }
  .page-section { margin-bottom: 48px; }
  .overview { margin-bottom: 48px; }
  .support-callout { align-items: flex-start; flex-direction: column; gap: 16px; margin-top: 48px; }
}