:root{
  --bg:#ffffff; --ink:#1a1d24; --sub:#5d6470; --line:#e8eaee;
  --accent:#2f6df6; --accent-d:#1f54d6; --soft:#f5f7fb; --line-green:#06c755;
  --radius:16px; --max:980px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0; background:var(--bg); color:var(--ink);
  font-family:-apple-system,"Segoe UI","Hiragino Sans","Noto Sans JP",sans-serif;
  line-height:1.7; -webkit-font-smoothing:antialiased;
}
a{color:var(--accent); text-decoration:none}
.wrap{max-width:var(--max); margin:0 auto; padding:0 20px}
.muted{color:var(--sub)}
.center{text-align:center}

/* header */
header.site{position:sticky; top:0; background:rgba(255,255,255,.92); backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line); z-index:20}
header.site .wrap{display:flex; align-items:center; justify-content:space-between; height:58px}
.logo{font-weight:800; font-size:18px; letter-spacing:.02em}
.logo span{color:var(--accent)}
.nav a{color:var(--ink); font-size:14px; margin-left:18px}
@media(max-width:640px){.nav a{margin-left:12px; font-size:13px}}

/* buttons */
.btn{display:inline-flex; align-items:center; gap:8px; justify-content:center;
  padding:15px 26px; border-radius:999px; font-weight:700; font-size:16px; cursor:pointer;
  border:0; transition:.15s; text-align:center}
.btn-line{background:var(--line-green); color:#fff}
.btn-line:hover{filter:brightness(1.05); color:#fff}
.btn-primary{background:var(--accent); color:#fff}
.btn-primary:hover{background:var(--accent-d); color:#fff}
.btn-ghost{background:#fff; color:var(--ink); border:1px solid var(--line)}
.btn-lg{padding:17px 34px; font-size:17px}

/* hero */
.hero{padding:54px 0 32px; text-align:center}
.hero h1{font-size:34px; line-height:1.35; margin:0 0 14px; letter-spacing:.01em}
.hero h1 b{color:var(--accent)}
.hero p.lead{font-size:16px; color:var(--sub); margin:0 auto 26px; max-width:620px}
@media(max-width:640px){.hero h1{font-size:26px}}
.kvs{display:flex; gap:10px; justify-content:center; flex-wrap:wrap; margin-top:18px}
.chip{background:var(--soft); border:1px solid var(--line); border-radius:999px; padding:7px 14px; font-size:13px; color:var(--sub)}

/* sections */
section{padding:46px 0; border-top:1px solid var(--line)}
section h2{font-size:24px; text-align:center; margin:0 0 6px}
section .sec-sub{text-align:center; color:var(--sub); margin:0 0 28px}

/* before/after */
.ba{max-width:520px; margin:24px auto 0; border-radius:var(--radius); overflow:hidden;
  box-shadow:0 10px 30px rgba(20,30,60,.12)}
.ba img{width:100%; display:block}

/* grid samples */
.grid{display:grid; gap:12px; grid-template-columns:repeat(auto-fill,minmax(150px,1fr))}
.grid figure{margin:0; border-radius:12px; overflow:hidden; background:#000; box-shadow:0 4px 14px rgba(20,30,60,.08)}
.grid img{width:100%; aspect-ratio:4/5; object-fit:cover; display:block}

/* feature cards */
.cards{display:grid; gap:16px; grid-template-columns:repeat(auto-fit,minmax(220px,1fr))}
.card{background:var(--soft); border:1px solid var(--line); border-radius:var(--radius); padding:22px}
.card .ic{font-size:26px}
.card h3{margin:8px 0 4px; font-size:17px}
.card p{margin:0; color:var(--sub); font-size:14px}

/* steps */
.steps{counter-reset:s; display:grid; gap:14px; grid-template-columns:repeat(auto-fit,minmax(200px,1fr))}
.step{position:relative; background:#fff; border:1px solid var(--line); border-radius:var(--radius); padding:22px 20px 20px}
.step::before{counter-increment:s; content:counter(s); position:absolute; top:-14px; left:18px;
  width:30px; height:30px; border-radius:50%; background:var(--accent); color:#fff; font-weight:800;
  display:flex; align-items:center; justify-content:center; font-size:15px}
.step h3{margin:6px 0 4px; font-size:16px}
.step p{margin:0; color:var(--sub); font-size:14px}

/* pricing */
.plans{display:grid; gap:16px; grid-template-columns:repeat(auto-fit,minmax(220px,1fr)); align-items:stretch}
.plan{border:1px solid var(--line); border-radius:var(--radius); padding:26px 22px; text-align:center; background:#fff; display:flex; flex-direction:column}
.plan.best{border:2px solid var(--accent); box-shadow:0 10px 30px rgba(47,109,246,.12)}
.plan .tag{display:inline-block; background:var(--accent); color:#fff; font-size:12px; font-weight:700; padding:3px 12px; border-radius:999px; margin-bottom:8px}
.plan .name{font-weight:700}
.plan .price{font-size:32px; font-weight:800; margin:8px 0 2px}
.plan .price small{font-size:14px; font-weight:600; color:var(--sub)}
.plan .desc{color:var(--sub); font-size:14px; margin:6px 0 18px; flex:1}

/* cta band */
.cta{background:linear-gradient(135deg,#eef3ff,#f7f9ff); border:1px solid var(--line); border-radius:24px; padding:36px 24px; text-align:center; margin:40px 0}
.cta h2{border:0; margin:0 0 8px}

/* footer */
footer.site{border-top:1px solid var(--line); padding:30px 0 50px; color:var(--sub); font-size:13px}
footer.site .links a{color:var(--sub); margin-right:16px}
footer.site .links{margin-bottom:10px}

/* article (apps) */
.article{max-width:760px; margin:0 auto}
.article h2{text-align:left}
.appcard{display:flex; gap:16px; border:1px solid var(--line); border-radius:var(--radius); padding:18px; margin:14px 0; align-items:center}
.appcard .rank{font-size:22px; font-weight:800; color:var(--accent); min-width:34px}
.appcard .body{flex:1}
.appcard h3{margin:0 0 4px; font-size:17px}
.appcard p{margin:0; color:var(--sub); font-size:14px}
.note{background:#fff7e6; border:1px solid #ffe2a8; border-radius:12px; padding:12px 16px; font-size:13px; color:#7a5b10}

/* legal table */
.legal{max-width:760px; margin:0 auto}
.legal h2{text-align:left}
.legal table{width:100%; border-collapse:collapse; font-size:14px}
.legal th,.legal td{border:1px solid var(--line); padding:12px 14px; text-align:left; vertical-align:top}
.legal th{background:var(--soft); width:34%; white-space:nowrap}