:root {
  --green: #0e9f6e;
  --green-dark: #087a55;
  --ink: #16352b;
  --muted: #587067;
  --bg: #f4faf7;
  --card: #ffffff;
  --line: #dcebe4;
  --radius: 18px;
  --shadow: 0 12px 40px rgba(14, 91, 65, 0.12);
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { font-family: "Hiragino Sans", "Hiragino Kaku Gothic ProN", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; color: var(--ink); background: var(--bg); line-height: 1.75; -webkit-font-smoothing: antialiased; }
a { color: var(--green-dark); text-decoration: none; }
a:hover { text-decoration: underline; }
.wrap { max-width: 1080px; margin: 0 auto; padding: 0 20px; }
header { position: sticky; top: 0; z-index: 20; background: rgba(244, 250, 247, 0.92); backdrop-filter: saturate(180%) blur(12px); border-bottom: 1px solid var(--line); }
.nav { display: flex; align-items: center; gap: 16px; min-height: 62px; }
.brand a { display: flex; align-items: center; gap: 10px; color: inherit; font-weight: 800; }
.brand img { width: 34px; height: 34px; border-radius: 8px; }
.links { margin-left: auto; display: flex; flex-wrap: wrap; gap: 20px; font-size: 14px; font-weight: 700; }
.links a { color: var(--muted); }
.hero { background: linear-gradient(155deg, #e8f8f1 0%, #ccefe1 100%); border-bottom: 1px solid var(--line); }
.hero .wrap { display: grid; grid-template-columns: auto 1fr; gap: 32px; align-items: center; padding-top: 72px; padding-bottom: 72px; }
.hero .icon { width: 180px; height: 180px; border-radius: 38px; box-shadow: var(--shadow); }
.hero h1 { font-size: clamp(36px, 6vw, 58px); line-height: 1.18; font-weight: 900; }
.hero .lead { max-width: 38em; margin-top: 16px; color: var(--muted); font-size: 18px; }
.badge { display: inline-block; margin-top: 24px; padding: 10px 18px; border-radius: 999px; color: #fff; background: var(--green-dark); font-weight: 800; }
section { padding: 64px 0; }
.section-title { text-align: center; margin-bottom: 36px; }
.section-title h2 { font-size: 30px; font-weight: 900; }
.section-title p { margin-top: 8px; color: var(--muted); }
.features { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.feature, .card, .plan { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; }
.feature .ic { font-size: 26px; margin-bottom: 10px; }
.feature h3 { font-size: 18px; }
.feature p { margin-top: 6px; color: var(--muted); font-size: 15px; }
.plans { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; max-width: 780px; margin: 0 auto; }
.plan.pro { border: 2px solid var(--green); box-shadow: var(--shadow); }
.plan .name { font-size: 19px; font-weight: 800; }
.plan .price { margin: 8px 0; font-size: 30px; font-weight: 900; }
.plan small { font-size: 14px; color: var(--muted); }
.plan ul { margin-left: 22px; }
.notice { max-width: 850px; margin: 0 auto; padding: 18px 22px; border: 1px solid #f0deb0; border-radius: var(--radius); background: #fff8e7; color: #715718; }
.prose { max-width: 760px; }
.prose h1 { font-size: 34px; font-weight: 900; }
.prose .updated { margin: 2px 0 28px; color: var(--muted); font-size: 14px; }
.prose h2 { margin: 30px 0 8px; font-size: 20px; }
.prose ul { margin: 8px 0 8px 22px; }
.prose .card { margin-top: 18px; }
footer { padding: 40px 0; border-top: 1px solid var(--line); color: var(--muted); font-size: 14px; }
.foot { display: flex; flex-wrap: wrap; gap: 16px; align-items: center; }
.foot .links { margin-left: auto; }
@media (max-width: 720px) { .hero .wrap { grid-template-columns: 1fr; text-align: center; } .hero .icon { width: 132px; height: 132px; } .hero .lead { margin-left: auto; margin-right: auto; } .features { grid-template-columns: 1fr; } }
@media (max-width: 620px) { .nav .links { display: none; } .plans { grid-template-columns: 1fr; } .foot { align-items: flex-start; flex-direction: column; } .foot .links { margin-left: 0; } }