:root{
  --ink:#16202c;--sub:#5a6675;--line:#e1e6ec;--bg:#fff;--soft:#f5f7fa;--navy:#0f2a4a;
  --accent:#1356d6;--accent-ink:#fff;--good:#1a7f37;--warn:#9a6700;--radius:12px;
  --shadow:0 1px 2px rgba(16,32,48,.06),0 8px 24px rgba(16,32,48,.08)
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Hiragino Sans","Hiragino Kaku Gothic ProN","Noto Sans JP",Meiryo,sans-serif;color:var(--ink);background:var(--bg);line-height:1.85;font-size:16px;-webkit-font-smoothing:antialiased}
img,svg{max-width:100%;display:block}
a{color:var(--accent)}
.wrap{max-width:1080px;margin:0 auto;padding:0 20px}
.narrow{max-width:760px}
.skip{position:absolute;left:-9999px}.skip:focus{left:8px;top:8px;background:#fff;padding:8px;z-index:99}

/* header */
.site-header{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.92);backdrop-filter:saturate(1.4) blur(8px);border-bottom:1px solid var(--line)}
.site-header .wrap{display:flex;align-items:center;justify-content:space-between;height:64px;gap:16px}
.brand{display:flex;align-items:center;gap:10px;color:var(--ink);text-decoration:none;font-weight:700;font-size:17px;letter-spacing:.02em}
.brand svg{width:28px;height:28px}
.nav{display:flex;align-items:center;gap:22px;font-size:14px}
.nav a{color:var(--sub);text-decoration:none}.nav a:hover{color:var(--ink)}
.nav a.btn,.nav a.btn:hover{color:#fff}
@media(max-width:760px){.nav a.hide-sp{display:none}}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;background:var(--accent);color:var(--accent-ink);text-decoration:none;font-weight:700;border-radius:10px;padding:14px 26px;border:0;font-size:16px;cursor:pointer;line-height:1.2;transition:transform .08s ease,box-shadow .2s ease;box-shadow:0 6px 16px rgba(19,86,214,.25)}
.btn:hover{transform:translateY(-1px)}
.btn:disabled{opacity:.6;cursor:wait}
.btn.small{padding:9px 16px;font-size:14px;box-shadow:none}
.btn.ghost{background:#fff;color:var(--ink);border:1px solid var(--line);box-shadow:none}

/* hero */
.hero{background:linear-gradient(180deg,#f3f7ff 0%,#fff 100%);padding:64px 0 56px}
.hero .grid{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center}
.eyebrow{display:inline-block;font-size:13px;font-weight:700;color:var(--accent);background:#e8f0ff;border-radius:999px;padding:4px 12px;margin-bottom:16px}
.hero h1{font-size:36px;line-height:1.35;margin:0 0 18px;letter-spacing:.01em}
.hero h1 em{font-style:normal;background:linear-gradient(transparent 62%,#cfe0ff 62%)}
.hero .lead{font-size:18px;color:var(--sub);margin:0 0 28px}
.cta-row{display:flex;flex-wrap:wrap;gap:12px;align-items:center}
.assure{display:flex;flex-wrap:wrap;gap:8px 18px;margin:18px 0 0;padding:0;list-style:none;font-size:13px;color:var(--sub)}
.assure li::before{content:"✓";color:var(--good);font-weight:700;margin-right:6px}
@media(max-width:900px){.hero .grid{grid-template-columns:1fr}.hero h1{font-size:26px}}

/* mail mock */
.mock{background:#fff;border:1px solid var(--line);border-radius:16px;box-shadow:var(--shadow);overflow:hidden}
.mock-bar{display:flex;gap:6px;align-items:center;padding:10px 14px;border-bottom:1px solid var(--line);background:var(--soft);font-size:12px;color:var(--sub)}
.mock-bar i{width:10px;height:10px;border-radius:50%;background:#d6dce4;display:inline-block}
.mock-body{padding:18px}
.mock-sum{font-size:13px;background:var(--soft);border-radius:8px;padding:10px 12px;margin-bottom:14px}
.tag{display:inline-block;font-size:12px;font-weight:700;border-radius:6px;padding:2px 8px;margin-right:6px}
.tag.a{background:#dafbe1;color:var(--good)}.tag.b{background:#fff3cd;color:var(--warn)}
.case{border:1px solid var(--line);border-radius:10px;padding:12px 14px;margin-top:10px}
.case h4{margin:6px 0 2px;font-size:15px;line-height:1.5;color:var(--accent)}
.case .meta{font-size:12px;color:var(--sub)}
.case dl{display:grid;grid-template-columns:72px 1fr;gap:2px 10px;margin:8px 0 0;font-size:13px}
.case dt{color:var(--sub)}.case dd{margin:0}

/* sections */
section{padding:80px 0}
section.alt{background:var(--soft)}
.sec-head{text-align:center;max-width:720px;margin:0 auto 44px}
.sec-head h2{font-size:30px;line-height:1.45;margin:0 0 12px}
.sec-head p{color:var(--sub);margin:0}
@media(max-width:760px){section{padding:56px 0}.sec-head h2{font-size:24px}}

.stat{display:flex;justify-content:center;gap:40px;flex-wrap:wrap;text-align:center}
.stat b{display:block;font-size:44px;line-height:1.1;color:var(--navy)}
.stat span{font-size:14px;color:var(--sub)}
.src{font-size:12px;color:var(--sub);text-align:center;margin-top:16px}

.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px}
.card h3{font-size:18px;margin:10px 0 8px;line-height:1.5}
.card p{margin:0;color:var(--sub);font-size:15px}
.icon{width:44px;height:44px;border-radius:10px;background:#e8f0ff;display:flex;align-items:center;justify-content:center;color:var(--accent);font-weight:800}
.step-no{font-size:13px;font-weight:800;color:var(--accent);letter-spacing:.08em}
@media(max-width:900px){.cards{grid-template-columns:1fr}}

.compare{width:100%;border-collapse:separate;border-spacing:0;background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;font-size:15px}
.compare th,.compare td{padding:14px 16px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
.compare thead th{background:var(--navy);color:#fff;font-size:14px}
.compare tr:last-child td{border-bottom:0}
.compare td.us{background:#f3f7ff;font-weight:600}
.scroll-x{overflow-x:auto}

.chips{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;padding:0;list-style:none;margin:0}
.chips li{background:#fff;border:1px solid var(--line);border-radius:999px;padding:8px 16px;font-size:14px}

.plans{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;align-items:stretch}
.plan{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px;display:flex;flex-direction:column}
.plan.featured{border:2px solid var(--accent);box-shadow:var(--shadow);position:relative}
.plan .badge{position:absolute;top:-12px;left:24px;background:var(--accent);color:#fff;font-size:12px;font-weight:700;border-radius:999px;padding:3px 12px}
.plan h3{margin:0 0 6px;font-size:18px}
.price{font-size:34px;font-weight:800;color:var(--navy);line-height:1.2}
.price small{font-size:14px;font-weight:600;color:var(--sub)}
.plan ul{padding:0 0 0 1.1em;margin:16px 0 20px;color:var(--sub);font-size:15px;flex:1}
.plan .btn{width:100%}
.addon{margin-top:20px;background:#fff;border:1px dashed #b8c3d1;border-radius:var(--radius);padding:20px 24px;display:flex;gap:16px;align-items:center;justify-content:space-between;flex-wrap:wrap}
@media(max-width:900px){.plans{grid-template-columns:1fr}}

.faq details{background:#fff;border:1px solid var(--line);border-radius:10px;padding:16px 20px;margin-bottom:10px}
.faq summary{font-weight:700;cursor:pointer;list-style:none}
.faq summary::-webkit-details-marker{display:none}
.faq summary::before{content:"Q. ";color:var(--accent)}
.faq details p{margin:10px 0 0;color:var(--sub)}

/* form */
.form-card{background:#fff;border:1px solid var(--line);border-radius:16px;box-shadow:var(--shadow);padding:32px}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:0 20px}
.form-grid .full{grid-column:1/-1}
@media(max-width:760px){.form-grid{grid-template-columns:1fr}.form-card{padding:22px}}
form .row{margin-bottom:18px}
form label{display:block;font-weight:700;margin-bottom:6px;font-size:15px}
form .req{color:#cf222e;font-size:12px;margin-left:6px;font-weight:700}
form .opt{color:var(--sub);font-size:12px;margin-left:6px;font-weight:400}
form .hint{font-size:13px;color:var(--sub);margin-top:4px}
form input[type=text],form input[type=email],form input[type=tel],form textarea,form select{width:100%;padding:12px;border:1px solid #c9d2dc;border-radius:8px;font-size:16px;font-family:inherit;background:#fff}
form input:focus,form textarea:focus,form select:focus{outline:2px solid #9bbcf5;border-color:var(--accent)}
form textarea{min-height:96px}
.check{display:flex;gap:8px;align-items:flex-start;font-weight:400 !important}
.hp{position:absolute;left:-9999px}

/* footer */
.site-footer{background:var(--navy);color:#c8d3e0;padding:40px 0;font-size:14px}
.site-footer a{color:#e6edf5;margin-right:18px;text-decoration:none}
.site-footer .small{margin-top:14px;font-size:12px;color:#93a3b6}

/* legal pages */
.legal-page{padding:40px 20px 64px}
.legal-page h1{font-size:26px}
.legal-page h2{font-size:18px;margin-top:28px}
table.legal{width:100%;border-collapse:collapse;font-size:15px}
table.legal th,table.legal td{border:1px solid var(--line);padding:12px;text-align:left;vertical-align:top}
table.legal th{width:30%;background:var(--soft)}
@media(max-width:640px){table.legal th{width:38%}}