:root{
  --ink:#1c2430;
  --ink-soft:#48525f;
  --line:#ddd8ce;
  --paper:#fcfbF8;
  --panel:#ffffff;
  --accent:#14406b;
  --accent-dark:#0e2f4f;
  --gold:#a8852f;
  --radius:10px;
  --max:1060px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;background:var(--paper);color:var(--ink);
  font-family:"Hiragino Kaku Gothic ProN","Hiragino Sans","Noto Sans JP","Yu Gothic UI",sans-serif;
  font-size:16px;line-height:1.85;-webkit-font-smoothing:antialiased;
}
a{color:var(--accent)}
.wrap{max-width:var(--max);margin:0 auto;padding:0 20px}

/* header */
header.site{
  position:sticky;top:0;z-index:20;background:rgba(252,251,248,.96);
  border-bottom:1px solid var(--line);
}
.header-in{display:flex;align-items:center;gap:28px;max-width:var(--max);margin:0 auto;padding:12px 20px}
.brand{text-decoration:none;color:var(--ink);line-height:1.2}
.brand .name{font-size:19px;font-weight:700;letter-spacing:.14em}
.brand .sub{display:block;font-size:11px;color:var(--ink-soft);letter-spacing:.08em}
nav.main{display:flex;gap:22px;margin-left:auto;font-size:14px}
nav.main a{color:var(--ink);text-decoration:none}
nav.main a:hover{color:var(--accent);text-decoration:underline}
.btn{
  display:inline-block;background:var(--accent);color:#fff;text-decoration:none;
  padding:10px 22px;border-radius:6px;font-weight:700;font-size:15px;border:1px solid var(--accent);
}
.btn:hover{background:var(--accent-dark)}
.btn.ghost{background:transparent;color:var(--accent)}
.btn.ghost:hover{background:#eef3f8}
.header-cta{margin-left:8px;padding:8px 18px;font-size:14px}
@media(max-width:760px){nav.main{display:none}}

/* hero */
.hero{padding:64px 0 56px;border-bottom:1px solid var(--line)}
.hero .kicker{font-size:13px;font-weight:700;color:var(--gold);letter-spacing:.18em;margin:0 0 14px}
.hero h1{font-size:38px;line-height:1.45;margin:0 0 18px;font-weight:800}
.hero p.lead{font-size:17px;color:var(--ink-soft);max-width:720px;margin:0 0 28px}
.hero .cta-row{display:flex;gap:14px;flex-wrap:wrap;align-items:center}
.hero .note{font-size:13px;color:var(--ink-soft)}
@media(max-width:760px){.hero h1{font-size:29px}}

/* sections */
section.block{padding:56px 0;border-bottom:1px solid var(--line)}
section.block h2{font-size:26px;margin:0 0 8px;line-height:1.5}
section.block .sec-lead{color:var(--ink-soft);margin:0 0 30px;max-width:760px}
h3{font-size:18px;margin:0 0 8px}

.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.cards.two{grid-template-columns:repeat(2,1fr)}
@media(max-width:760px){.cards,.cards.two{grid-template-columns:1fr}}
.card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:22px}
.card p{margin:0;color:var(--ink-soft);font-size:15px}
.card .tag{display:inline-block;font-size:12px;font-weight:700;color:var(--accent);
  background:#eef3f8;border-radius:4px;padding:2px 8px;margin-bottom:10px}

table.spec{width:100%;border-collapse:collapse;background:var(--panel);font-size:15px}
table.spec th,table.spec td{border:1px solid var(--line);padding:12px 14px;text-align:left;vertical-align:top}
table.spec th{background:#f4f1ea;width:210px;font-weight:700}
@media(max-width:760px){table.spec th{width:130px}}

/* product mock */
.mock{background:#10161f;border-radius:12px;padding:18px;color:#cfd8e3;font-size:13px}
.mock .bar{display:flex;gap:6px;margin-bottom:14px}
.mock .bar span{width:10px;height:10px;border-radius:50%;background:#3a4656;display:inline-block}
.mock .grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}
@media(max-width:760px){.mock .grid{grid-template-columns:1fr}}
.mock .cell{background:#182130;border:1px solid #263144;border-radius:8px;padding:14px}
.mock .cell b{color:#fff;display:block;font-size:14px;margin-bottom:6px}
.mock .num{font-size:22px;color:#fff;font-weight:700}
.mock .cap{margin-top:10px;font-size:12px;color:#7e8b9b}

/* steps */
ol.steps{margin:0;padding:0;list-style:none;counter-reset:st}
ol.steps li{counter-increment:st;position:relative;padding:0 0 18px 52px}
ol.steps li::before{
  content:counter(st);position:absolute;left:0;top:2px;width:34px;height:34px;border-radius:50%;
  background:var(--accent);color:#fff;font-weight:700;text-align:center;line-height:34px;font-size:15px;
}
ol.steps li b{display:block;font-size:16px}
ol.steps li p{margin:2px 0 0;color:var(--ink-soft);font-size:15px}

/* faq */
.faq details{background:var(--panel);border:1px solid var(--line);border-radius:8px;margin-bottom:10px;padding:4px 18px}
.faq summary{cursor:pointer;font-weight:700;padding:12px 0}
.faq details p{margin:0 0 14px;color:var(--ink-soft);font-size:15px}

/* plain pages */
main.page{max-width:820px;margin:0 auto;padding:48px 20px 64px}
main.page h1{font-size:30px;margin:0 0 6px}
main.page .updated{color:var(--ink-soft);font-size:13px;margin-bottom:30px}
main.page h2{font-size:20px;margin:34px 0 8px}
main.page p,main.page li{color:#2c3540;font-size:15.5px}
main.page ul{padding-left:22px}

/* form slot */
.form-slot{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:26px}
.form-slot .ph{color:var(--ink-soft);font-size:14px}

/* footer */
footer.site{padding:44px 0 54px;background:#f4f1ea;margin-top:0}
.footer-grid{display:flex;gap:40px;flex-wrap:wrap;justify-content:space-between}
footer.site h4{margin:0 0 10px;font-size:14px}
footer.site ul{list-style:none;margin:0;padding:0;font-size:14px}
footer.site li{margin-bottom:6px}
footer.site a{color:var(--ink);text-decoration:none}
footer.site a:hover{text-decoration:underline}
.copyright{margin-top:30px;font-size:12.5px;color:var(--ink-soft)}