:root{
  --bg:#fbfaf7; --surface:#ffffff; --ink:#1a1d24; --muted:#5b6472; --line:#e9e6df;
  --accent:#0f7d5b; --accent-soft:#e6f3ee; --warm:#e8a13c; --shadow:0 1px 2px rgba(20,25,35,.04),0 8px 24px rgba(20,25,35,.06);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);
  font:16px/1.6 system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
.btn{display:inline-flex;align-items:center;gap:.4rem;padding:.7rem 1.25rem;border-radius:10px;
  font-weight:650;font-size:.95rem;border:1px solid transparent;cursor:pointer;transition:.15s}
.btn.primary{background:var(--accent);color:#fff;box-shadow:var(--shadow)}
.btn.primary:hover{filter:brightness(1.06);transform:translateY(-1px)}
.btn.ghost{background:var(--surface);border-color:var(--line);color:var(--ink)}
.btn.ghost:hover{border-color:var(--accent);color:var(--accent)}
/* nav */
.nav{display:flex;align-items:center;gap:1rem;padding:1rem clamp(1.1rem,5vw,3rem);
  position:sticky;top:0;z-index:20;background:color-mix(in srgb,var(--bg) 82%,transparent);
  backdrop-filter:saturate(180%) blur(10px);border-bottom:1px solid var(--line)}
.nav .sp{flex:1}
.brand{font-weight:850;font-size:1.3rem;letter-spacing:-.02em}
.brand span{color:var(--muted);font-weight:500}
main{max-width:1000px;margin:0 auto;padding:0 clamp(1.1rem,5vw,2rem)}
/* hero */
.hero{text-align:center;padding:clamp(3rem,9vh,6rem) 0 clamp(2rem,5vh,3.5rem);max-width:720px;margin:0 auto}
.eyebrow{display:inline-block;margin:0 0 1rem;padding:.3rem .85rem;border-radius:999px;
  background:var(--accent-soft);color:var(--accent);font-size:.8rem;font-weight:700;letter-spacing:.03em}
.hero h1{font-size:clamp(2.1rem,6vw,3.4rem);line-height:1.08;letter-spacing:-.03em;margin:.2rem 0 1rem;font-weight:830}
.hero h1 em{font-style:normal;color:var(--accent);position:relative}
.hero h1 em:after{content:"";position:absolute;left:0;right:0;bottom:.06em;height:.18em;
  background:var(--warm);opacity:.35;border-radius:2px;z-index:-1}
.lead{font-size:clamp(1.05rem,2.4vw,1.25rem);color:var(--muted);max-width:600px;margin:0 auto 1.8rem}
.cta{display:flex;gap:.7rem;justify-content:center;flex-wrap:wrap}
.fine{color:var(--muted);font-size:.85rem;margin-top:1.4rem}
/* steps */
.steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:1rem;
  padding:1rem 0 2.5rem}
.step{background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:1.5rem;box-shadow:var(--shadow)}
.step .ic{font-size:1.7rem;margin-bottom:.5rem}
.step h3{margin:.2rem 0 .4rem;font-size:1.15rem;letter-spacing:-.01em}
.step p{margin:0;color:var(--muted);font-size:.95rem}
/* band */
.band{background:var(--ink);color:#fff;border-radius:22px;padding:clamp(2rem,6vw,3.2rem);
  text-align:center;margin:1rem 0 3rem}
.band h2{font-size:clamp(1.4rem,3.5vw,2rem);letter-spacing:-.02em;margin:0 0 .8rem;max-width:620px;margin-inline:auto}
.band p{color:#c5ccd6;max-width:560px;margin:0 auto 1.6rem}
.band .btn.primary{background:#fff;color:var(--ink)}
/* footer */
.foot{display:flex;justify-content:space-between;gap:1rem;flex-wrap:wrap;
  padding:1.6rem 0 3rem;border-top:1px solid var(--line);color:var(--muted);font-size:.85rem}
.dim{color:var(--muted)}
@media(max-width:520px){.foot{flex-direction:column;gap:.3rem}}