:root{
  --bg:#f2f5fa;--surface:#fff;--ink:#0e1a2e;--muted:#4a5870;--line:#d5dce8;
  --cobalt:#1747c8;--cobalt-dk:#10369c;--tint:#e4ebfa;--tint2:#cfdbf7;--err:#a32a1d;--r:6px;
  --font:"Noto Sans JP","Hiragino Sans","Hiragino Kaku Gothic ProN","Yu Gothic UI","Yu Gothic",Meiryo,system-ui,sans-serif;
}
*{box-sizing:border-box}
html{color-scheme:light;scroll-behavior:smooth;scroll-padding-top:72px}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--font);font-size:16px;line-height:1.9;letter-spacing:.03em;font-feature-settings:"palt";overflow-wrap:anywhere;-webkit-text-size-adjust:100%}
a{color:var(--cobalt)}
.wrap{max-width:1120px;margin:0 auto;padding:0 20px}

/* header */
header.site{background:rgba(255,255,255,.94);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:10}
header.site .wrap{display:flex;align-items:center;justify-content:space-between;gap:16px;height:64px}
.logos{display:flex;align-items:baseline;gap:14px;min-width:0}
.co{font-weight:700;font-size:15px;letter-spacing:.08em;color:var(--ink);text-decoration:none;white-space:nowrap}
.brand{font-weight:700;font-size:15px;color:var(--muted);text-decoration:none;padding-left:14px;border-left:1px solid var(--line);white-space:nowrap}
nav{display:flex;align-items:center;gap:24px}
nav a{color:var(--muted);text-decoration:none;font-size:14px;white-space:nowrap}
nav a:hover{color:var(--cobalt)}
nav a.go{color:#fff;background:var(--cobalt);padding:8px 16px;border-radius:var(--r);font-weight:700;line-height:1.5}
nav a.go:hover{background:var(--cobalt-dk);color:#fff}
@media (max-width:640px){nav a:not(.go){display:none}.wrap{padding:0 16px}}

/* hero */
.hero{padding:72px 0 88px}
.hero .wrap{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,1fr);gap:56px;align-items:center}
.hero h1{font-size:clamp(34px,5.4vw,60px);line-height:1.28;font-weight:900;letter-spacing:.02em;margin:0 0 24px}
.lead{font-size:17px;color:var(--muted);max-width:30em;margin:0 0 32px;line-height:1.95}
.actions{display:flex;flex-wrap:wrap;gap:12px}
.btn{display:inline-flex;align-items:center;justify-content:center;font:inherit;font-weight:700;font-size:16px;line-height:1.4;min-height:52px;padding:12px 28px;border:2px solid var(--cobalt);border-radius:var(--r);background:var(--cobalt);color:#fff;cursor:pointer;text-decoration:none;letter-spacing:.06em;white-space:nowrap}
.btn:hover{background:var(--cobalt-dk);border-color:var(--cobalt-dk)}
.btn:active{transform:translateY(1px)}
.btn.ghost{background:transparent;color:var(--cobalt)}
.btn.ghost:hover{background:var(--tint)}
.btn.ghost[aria-disabled=true]{color:var(--muted);border-color:var(--line);background:var(--surface);cursor:default}
.btn:disabled{opacity:.55;cursor:default}
.art{display:block;width:100%;height:auto;border-radius:var(--r)}
@media (max-width:860px){
  .hero{padding:40px 0 56px}
  .hero .wrap{grid-template-columns:1fr;gap:36px}
  .btn{flex:1 1 100%}
}

/* sections */
section{scroll-margin-top:72px}
.sec{padding:88px 0}
.sec h2{font-size:clamp(26px,3.6vw,38px);line-height:1.4;font-weight:900;letter-spacing:.02em;margin:0 0 20px}
.sec p{margin:0 0 16px;max-width:36em}
@media (max-width:860px){.sec{padding:56px 0}}

/* two pillars */
.pillars{display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:0;background:var(--surface);border:1px solid var(--line);border-radius:var(--r);overflow:hidden}
.pillar{padding:48px 44px}
.pillar+.pillar{background:var(--tint);border-left:1px solid var(--tint2)}
.pillar h3{font-size:24px;line-height:1.5;font-weight:700;margin:0 0 12px}
.pillar p{margin:0 0 12px;color:var(--muted)}
.pillar .st{display:inline-block;font-size:13px;font-weight:700;color:var(--cobalt);border:1px solid var(--cobalt);border-radius:var(--r);padding:0 10px;line-height:1.9;margin-bottom:16px}
.fine{font-size:14px;color:var(--muted)}
.pillars+.fine{margin-top:20px;max-width:none}
@media (max-width:860px){.pillars{grid-template-columns:1fr}.pillar{padding:32px 24px}.pillar+.pillar{border-left:0;border-top:1px solid var(--tint2)}}

/* steps */
.steps-sec{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.steps{list-style:none;margin:40px 0 0;padding:0;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:0;counter-reset:s}
.steps li{position:relative;padding:28px 32px 0 0;border-top:3px solid var(--ink);counter-increment:s}
.steps li+li{padding-left:32px;border-left:0}
.steps li::before{content:counter(s);display:block;font-size:44px;line-height:1;font-weight:900;color:var(--cobalt);margin-bottom:14px;font-feature-settings:"tnum"}
.steps b{display:block;font-size:19px;line-height:1.5;margin-bottom:6px}
.steps span{color:var(--muted);font-size:15px;display:block}
@media (max-width:860px){.steps{grid-template-columns:1fr;gap:28px}.steps li,.steps li+li{padding:20px 0 0}.steps li::before{font-size:36px}}

/* signup */
.signup{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,6fr);gap:64px;align-items:start}
.signup .side p{color:var(--muted)}
.panel{background:var(--surface);border:1px solid var(--line);border-top:3px solid var(--cobalt);border-radius:var(--r);padding:36px}
@media (max-width:860px){.signup{grid-template-columns:1fr;gap:28px}.panel{padding:24px 20px}}

.field{margin-bottom:22px}
label,.label{display:block;font-size:15px;font-weight:700;margin-bottom:6px;line-height:1.6}
.req,.opt{font-weight:500;font-size:12px;margin-left:8px;color:var(--muted)}
.req{color:var(--err)}
input[type=email],select{width:100%;font:inherit;font-size:16px;letter-spacing:.02em;padding:10px 12px;border:1px solid #8996ac;border-radius:var(--r);background:#fff;color:var(--ink);min-height:48px}
select:disabled{background:#eceff5;color:var(--muted);border-color:var(--line)}
input:focus-visible,select:focus-visible,.chip:focus-visible,.btn:focus-visible,a:focus-visible,.consent input:focus-visible{outline:3px solid var(--cobalt);outline-offset:2px}
.chips{display:flex;flex-wrap:wrap;gap:8px}
.chip{font:inherit;font-size:15px;line-height:1.4;padding:9px 16px;min-height:44px;border:1px solid #8996ac;border-radius:var(--r);background:#fff;color:var(--ink);cursor:pointer;letter-spacing:.03em}
.chip:hover{border-color:var(--cobalt)}
.chip[aria-pressed=true]{background:var(--cobalt);border-color:var(--cobalt);color:#fff;font-weight:700}
.consent{display:flex;gap:10px;align-items:flex-start;font-weight:400;font-size:14px;margin:0 0 14px;line-height:1.7}
.consent input{margin-top:4px;width:20px;height:20px;flex:none;accent-color:var(--cobalt)}
.hp{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}
.panel .btn{width:100%}
.form-msg{min-height:1.6em;margin:0 0 10px;font-size:14px}
.form-msg.err{color:var(--err);font-weight:700}
.thanks{background:var(--tint);border-left:4px solid var(--cobalt);border-radius:var(--r);padding:18px 20px;margin:0 0 12px;font-weight:700}
.note{font-size:14px;color:var(--muted);margin:16px 0 0}
.panel .note{max-width:none}

/* providers */
.prov{background:var(--tint);border-top:1px solid var(--tint2)}
.prov .wrap{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,6fr);gap:64px;align-items:start}
.prov h2{margin:0}
.prov p{color:var(--ink)}
.pending{display:inline-block;border:1px dashed #5d6b85;border-radius:var(--r);padding:4px 14px;font-size:14px;color:var(--muted);background:var(--surface)}
@media (max-width:860px){.prov .wrap{grid-template-columns:1fr;gap:16px}}

footer{padding:40px 0 48px;color:var(--muted);font-size:14px;background:var(--surface);border-top:1px solid var(--line)}
footer .wrap{display:flex;flex-wrap:wrap;gap:8px 32px;justify-content:space-between;align-items:baseline}
footer p{margin:0}
footer a{color:var(--muted)}
.src{font-size:12px;flex-basis:100%}

/* doc (privacy) */
main.doc{padding:56px 0 72px}
.docbox{max-width:760px;background:var(--surface);border:1px solid var(--line);border-top:3px solid var(--cobalt);border-radius:var(--r);padding:44px}
main.doc h1{font-size:clamp(28px,4vw,36px);font-weight:900;line-height:1.4;margin:0 0 20px}
main.doc h2{font-size:19px;font-weight:700;margin:36px 0 8px;line-height:1.5}
main.doc p{margin:0 0 12px}
ul.points{padding-left:1.3em;margin:0 0 12px}
ul.points li{margin-bottom:4px}
@media (max-width:640px){.docbox{padding:28px 20px}}