:root {
  --bg: #fbfcfa; --fg: #17201b; --fg2: #56635b; --line: #dfe6e1; --card: #ffffff;
  --green: #1f7a4d; --green-dark: #145c3b; --green-soft: #e3f4ea; --on-green: #ffffff;
  --ui: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", sans-serif;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #111613; --fg: #e8eee9; --fg2: #9aa9a0; --line: #26302a; --card: #18201b; --green: #4cc486; --green-dark: #6fd6a0; --green-soft: #1b2e23; --on-green: #08140d; }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--fg); font: 17px/1.6 var(--ui); }
a { color: var(--green); }
.wrap { max-width: 1080px; margin: 0 auto; padding: 0 24px; }

header.top { display: flex; align-items: center; justify-content: space-between; padding: 20px 0; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--fg); text-decoration: none; font-weight: 650; font-size: 19px; }
.brand img { width: 34px; height: 34px; }
nav a { color: var(--fg2); text-decoration: none; margin-left: 22px; font-size: 15px; }
nav a:hover { color: var(--fg); }

.hero { text-align: center; padding: 56px 0 32px; }
.hero img.icon { width: 112px; height: 112px; }
.hero h1 { font-size: clamp(38px, 6vw, 60px); line-height: 1.08; letter-spacing: -0.02em; margin: 18px 0 14px; }
.hero p.lede { font-size: clamp(18px, 2.3vw, 21px); color: var(--fg2); max-width: 640px; margin: 0 auto 30px; }
.ctas { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }
.btn { display: inline-flex; align-items: center; gap: 8px; padding: 12px 22px; border-radius: 10px; font-weight: 600; font-size: 16px; text-decoration: none; }
.btn.primary { background: var(--green); color: var(--on-green); }
.btn.primary:hover { background: var(--green-dark); }
.btn.ghost { border: 1px solid var(--line); color: var(--fg); }
.note { color: var(--fg2); font-size: 14px; margin-top: 14px; }

.shot { margin: 44px auto 0; max-width: 1000px; border-radius: 12px; overflow: hidden; border: 1px solid var(--line); box-shadow: 0 24px 60px rgba(20, 60, 40, .14); }
.shot img { display: block; width: 100%; height: auto; }

section { padding: 72px 0 0; }
section h2 { font-size: clamp(26px, 3.4vw, 34px); letter-spacing: -0.01em; margin: 0 0 10px; text-align: center; }
section p.sub { color: var(--fg2); text-align: center; max-width: 620px; margin: 0 auto 36px; }
.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 22px; }
.card h3 { margin: 0 0 6px; font-size: 17px; }
.card p { margin: 0; color: var(--fg2); font-size: 15px; }
.pair { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.pair figure { margin: 0; }
.pair img { width: 100%; height: auto; border-radius: 10px; border: 1px solid var(--line); }
.pair figcaption { color: var(--fg2); font-size: 14px; margin-top: 8px; text-align: center; }
.formats { display: flex; flex-wrap: wrap; gap: 8px; justify-content: center; }
.formats span { background: var(--green-soft); color: var(--green); border-radius: 999px; padding: 4px 12px; font-size: 14px; font-weight: 600; }

.doc { max-width: 720px; padding: 32px 0 40px; }
.doc h1 { font-size: 38px; letter-spacing: -0.01em; margin: 0 0 6px; }
.doc .updated { color: var(--fg2); margin: 0 0 28px; }
.doc h2 { font-size: 22px; margin: 32px 0 8px; }
.doc li { margin: 4px 0; }

footer { border-top: 1px solid var(--line); margin-top: 80px; padding: 26px 0 40px; color: var(--fg2); font-size: 14px; }
footer .wrap { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px; }
footer a { color: var(--fg2); margin-left: 18px; }

@media (max-width: 760px) {
  .grid, .pair { grid-template-columns: 1fr; }
  nav a { margin-left: 14px; }
  footer a { margin: 0 18px 0 0; }
}