:root {
  --bg: #f7f7f2;
  --paper: #ffffff;
  --paper-soft: #eff7ef;
  --ink: #183129;
  --muted: #5e786d;
  --line: #d7e8d8;
  --green: #1b7a54;
  --green-soft: #dff4e6;
  --warm: #f4b16b;
  --shadow: 0 18px 56px rgba(24, 49, 41, 0.08);
  --radius: 24px;
  --container: min(1140px, calc(100% - 2rem));
}

*,
*::before,
*::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: "Segoe UI", "PingFang SC", sans-serif;
  background:
    linear-gradient(180deg, #fafaf5 0%, #f3f7f1 100%);
  color: var(--ink);
  line-height: 1.72;
}
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
.container { width: var(--container); margin: 0 auto; }
.skip-link,.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }
.skip-link:focus { width: auto; height: auto; clip: auto; left: 1rem; top: 1rem; background: #fff; padding: .8rem 1rem; border-radius: 12px; z-index: 100; }
.site-header {
  position: sticky; top: 0; z-index: 10; background: rgba(247,247,242,.88); backdrop-filter: blur(18px); border-bottom: 1px solid var(--line);
}
.header-row { min-height: 5rem; display: flex; align-items: center; justify-content: space-between; gap: 1rem; }
.brand { display: inline-flex; align-items: center; gap: .8rem; }
.brand span { display: grid; }
.brand strong { font-size: 1rem; font-weight: 800; letter-spacing: .03em; }
.brand small { color: var(--muted); font-size: .8rem; }
.site-nav { display: flex; gap: 1.15rem; align-items: center; }
.site-nav a { color: var(--muted); }
.site-nav a:hover, .site-nav a:focus-visible { color: var(--green); }
.nav-toggle { display: none; width: 3rem; height: 3rem; border: 0; border-radius: 50%; background: var(--green-soft); }
.nav-toggle span { display: block; width: 1.2rem; height: 2px; margin: .28rem auto; background: var(--green); }
.hero, .section { padding: 5rem 0; }
.hero-sub { padding-top: 3.3rem; }
.hero-grid, .benefit-grid, .feature-band, .step-grid, .quote-grid, .support-grid { display: grid; gap: 1.2rem; }
.hero-grid { grid-template-columns: minmax(0, 1fr) minmax(0, .92fr); align-items: center; }
.eyebrow { margin: 0 0 .95rem; color: var(--green); letter-spacing: .12em; text-transform: uppercase; font-size: .82rem; font-weight: 700; }
h1,h2,h3 { margin: 0 0 1rem; line-height: 1.12; }
h1 { font-size: clamp(2.8rem, 6vw, 5rem); letter-spacing: -.05em; }
h2 { font-size: clamp(2rem, 3vw, 3rem); }
h3 { font-size: 1.3rem; }
p, li { color: var(--muted); }
.hero-lead, .section-head p { font-size: 1.05rem; max-width: 42rem; }
.hero-actions { display: flex; flex-wrap: wrap; gap: .9rem; margin-top: 1.8rem; }
.button {
  display: inline-flex; align-items: center; justify-content: center; min-height: 3.1rem; padding: .8rem 1.35rem; border-radius: 999px; border: 1px solid transparent; font-weight: 700;
}
.button.primary { background: var(--green); color: #fff; }
.button.secondary { background: #fff; border-color: var(--line); color: var(--green); }
.text-link { color: var(--green); font-weight: 700; }
.rail-card, .benefit-card, .step-card, .quote-card, .faq-item, .cta-box, .platform-row, .support-card {
  background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow);
}
.rail-card, .feature-band, .cta-box { padding: 1.6rem; }
.rail-card { display: flex; justify-content: space-between; gap: 1rem; align-items: end; }
.platform-rail { display: flex; gap: .8rem; flex-wrap: wrap; }
.platform-rail span, .label {
  display: inline-flex; padding: .42rem .82rem; border-radius: 999px; background: var(--green-soft); color: var(--green); font-weight: 700; font-size: .84rem;
}
.benefit-grid { grid-template-columns: repeat(3, minmax(0,1fr)); }
.benefit-card, .quote-card, .support-card { padding: 1.4rem; }
.section-soft { background: linear-gradient(180deg, #edf6ef, #f7f7f2); }
.feature-band { grid-template-columns: minmax(0, 1fr) minmax(0, .88fr); align-items: center; background: var(--paper-soft); border-radius: 28px; }
.check-list { list-style: none; padding: 0; margin: 1rem 0 0; }
.check-list li { position: relative; padding-left: 1.4rem; }
.check-list li + li { margin-top: .7rem; }
.check-list li::before { content: ""; position: absolute; left: 0; top: .72rem; width: .5rem; height: .5rem; border-radius: 50%; background: var(--warm); }
.step-grid { grid-template-columns: repeat(3, minmax(0,1fr)); }
.step-card { padding: 1.5rem; }
.step-card span { display: inline-flex; width: 2.4rem; height: 2.4rem; align-items: center; justify-content: center; border-radius: 50%; background: var(--green-soft); color: var(--green); font-weight: 800; margin-bottom: 1rem; }
.quote-grid { grid-template-columns: repeat(2, minmax(0,1fr)); }
.quote-card { margin: 0; }
.quote-card p { color: var(--ink); font-size: 1.05rem; }
.quote-card footer { margin-top: 1rem; color: var(--green); }
.faq-list { display: grid; gap: 1rem; }
.faq-item { padding: 0 1.2rem; }
.faq-item summary { list-style: none; cursor: pointer; padding: 1.15rem 0; font-weight: 700; color: var(--ink); }
.faq-item p { margin: 0 0 1.15rem; }
.cta-section { padding-top: 0; }
.cta-box { display: flex; align-items: center; justify-content: space-between; gap: 1rem; background: linear-gradient(135deg, #e8f7ec, #ffffff); }
.download-list { display: grid; gap: 1rem; }
.platform-row {
  display: flex; justify-content: space-between; gap: 1rem; align-items: center; padding: 1.4rem 1.5rem;
}
.platform-actions { display: flex; align-items: center; gap: 1rem; flex-wrap: wrap; }
.support-grid { grid-template-columns: repeat(2, minmax(0,1fr)); }
.site-footer { padding: 1.4rem 0 2rem; border-top: 1px solid var(--line); }
.footer-row { display: flex; justify-content: space-between; gap: 1rem; align-items: center; }
.reveal { opacity: 0; transform: translateY(18px); transition: opacity .45s ease, transform .45s ease; }
.reveal.is-visible { opacity: 1; transform: translateY(0); }

@media (max-width: 980px) {
  .hero-grid, .feature-band, .benefit-grid, .step-grid, .quote-grid, .support-grid { grid-template-columns: 1fr; }
  .rail-card, .cta-box, .platform-row, .footer-row { flex-direction: column; align-items: start; }
}

@media (max-width: 840px) {
  .nav-toggle { display: inline-block; }
  .site-nav {
    display: none; position: absolute; top: calc(100% + .5rem); left: 1rem; right: 1rem; flex-direction: column; align-items: start;
    background: rgba(255,255,255,.98); border: 1px solid var(--line); border-radius: 18px; padding: 1rem;
  }
  .site-nav.is-open { display: flex; }
  .site-nav.nav-static { position: static; display: flex; flex-direction: row; padding: 0; border: 0; background: transparent; }
}