:root{
  --green:#58CC02; --green-d:#46A302; --dark:#1E2243; --muted:#6b7280;
  --blue:#1CB0F6; --bg:#ffffff; --soft:#f4f7f4; --line:#e6e9e6;
}
*{margin:0;padding:0;box-sizing:border-box;-webkit-font-smoothing:antialiased;}
html{scroll-behavior:smooth;}
body{
  font-family:"Hiragino Sans","Hiragino Kaku Gothic ProN","Noto Sans JP",-apple-system,BlinkMacSystemFont,sans-serif;
  color:var(--dark); background:var(--bg); line-height:1.75; font-size:16px;
}
a{color:var(--blue);text-decoration:none;}
a:hover{text-decoration:underline;}
.wrap{max-width:760px;margin:0 auto;padding:0 22px;}

/* header */
header{position:sticky;top:0;background:rgba(255,255,255,.9);backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);z-index:10;}
.nav{max-width:1080px;margin:0 auto;padding:14px 22px;display:flex;align-items:center;justify-content:space-between;}
.brand{font-weight:900;font-size:22px;color:var(--dark);letter-spacing:-.5px;display:flex;align-items:center;gap:8px;}
.brand .dot{width:12px;height:12px;border-radius:4px;background:var(--green);display:inline-block;}
.nav .links{display:flex;gap:20px;font-size:14px;font-weight:700;}
.nav .links a{color:var(--muted);}

/* hero */
.hero{background:radial-gradient(120% 80% at 50% 0%,#fff 0%,#eaf8de 70%);padding:64px 0 56px;text-align:center;}
.hero h1{font-size:40px;font-weight:900;letter-spacing:-1px;line-height:1.35;}
.hero p.lead{font-size:18px;color:var(--muted);margin-top:18px;max-width:620px;margin-left:auto;margin-right:auto;}
.hero .cta{display:inline-flex;align-items:center;gap:8px;background:var(--green);color:#fff;font-weight:800;
  padding:15px 28px;border-radius:14px;margin-top:28px;box-shadow:0 4px 0 var(--green-d);font-size:16px;}
.hero .cta:hover{text-decoration:none;filter:brightness(1.03);}
.hero .free{margin-top:14px;font-size:13px;color:var(--muted);}

/* sections */
section{padding:54px 0;}
section h2{font-size:28px;font-weight:900;text-align:center;letter-spacing:-.5px;}
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:34px;}
.step{background:var(--soft);border-radius:18px;padding:26px 20px;text-align:center;}
.step .n{width:42px;height:42px;border-radius:50%;background:var(--green);color:#fff;font-weight:900;
  display:flex;align-items:center;justify-content:center;margin:0 auto 14px;font-size:18px;}
.step h3{font-size:17px;font-weight:800;margin-bottom:6px;}
.step p{font-size:14px;color:var(--muted);line-height:1.7;}
.feat{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;margin-top:30px;}
.feat .f{display:flex;gap:14px;align-items:flex-start;background:#fff;border:1px solid var(--line);border-radius:14px;padding:18px;}
.feat .f .ic{font-size:26px;}
.feat .f h3{font-size:15px;font-weight:800;margin-bottom:3px;}
.feat .f p{font-size:13.5px;color:var(--muted);line-height:1.65;}

/* faq */
.faq{background:var(--soft);}
.faq .q{background:#fff;border:1px solid var(--line);border-radius:14px;padding:20px 22px;margin-top:14px;}
.faq .q h3{font-size:16px;font-weight:800;margin-bottom:8px;}
.faq .q p{font-size:14.5px;color:var(--muted);}

/* legal pages */
.legal{padding:48px 0 80px;}
.legal h1{font-size:30px;font-weight:900;margin-bottom:8px;}
.legal .updated{color:var(--muted);font-size:13px;margin-bottom:28px;}
.legal h2{font-size:18px;font-weight:800;margin:30px 0 10px;}
.legal p{font-size:15px;color:#374151;margin-bottom:8px;white-space:pre-line;}
.legal .back{display:inline-block;margin-bottom:24px;font-weight:700;}

/* footer */
footer{border-top:1px solid var(--line);padding:36px 0;color:var(--muted);font-size:13px;}
footer .frow{display:flex;justify-content:space-between;flex-wrap:wrap;gap:14px;align-items:center;}
footer .flinks{display:flex;gap:18px;font-weight:700;}
footer .flinks a{color:var(--muted);}

@media(max-width:640px){
  .hero h1{font-size:30px;} .steps{grid-template-columns:1fr;} .feat{grid-template-columns:1fr;}
  .nav .links{gap:14px;}
}