:root{
  --ink:#17324D;
  --text:#1E2A33;
  --muted:#5B6B78;
  --paper:#FFFFFF;
  --mist:#EEF3F6;
  --line:#D5DEE5;
  --ask:#E3EEF7;
  --mark:#F6D365;
  --focus:#2F7FBF;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--paper);color:var(--text);
  font-family:"Zen Kaku Gothic New",system-ui,-apple-system,"Hiragino Sans","Yu Gothic",sans-serif;
  font-size:17px;line-height:1.85;letter-spacing:.02em;
}
a{color:var(--ink);text-underline-offset:3px}
a:focus-visible,button:focus-visible,summary:focus-visible{outline:3px solid var(--focus);outline-offset:3px;border-radius:4px}
img,video{max-width:100%}
.wrap{max-width:1040px;margin:0 auto;padding:0 20px}
.narrow{max-width:720px}

/* header */
.site-head{border-bottom:1px solid var(--line)}
.site-head .wrap{display:flex;align-items:center;justify-content:space-between;height:64px}
.logo{font-weight:900;font-size:20px;color:var(--ink);text-decoration:none;letter-spacing:.04em}
.logo span{display:inline-block;width:10px;height:10px;background:var(--mark);border-radius:2px;margin-right:8px;transform:translateY(-2px)}
.head-cta{font-size:15px;font-weight:700}

/* hero */
.hero{padding:64px 0 72px}
.hero .wrap{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
.hero h1{font-size:40px;text-wrap:balance;line-height:1.35;margin:0 0 20px;color:var(--ink);font-weight:900;letter-spacing:.01em}
.hero p.lead{font-size:18px;margin:0 0 28px;color:var(--text);max-width:30em}
.btn{display:inline-block;background:var(--ink);color:#fff;text-decoration:none;font-weight:700;padding:14px 26px;border-radius:999px;font-size:17px}
.btn:hover{background:#0F2438}
.hero .note{font-size:14px;color:var(--muted);margin-top:14px}

/* chat log */
.log{background:var(--mist);border-radius:20px;padding:22px 20px 18px;border:1px solid var(--line)}
.log-title{font-size:13px;color:var(--muted);margin:0 0 14px;display:flex;justify-content:space-between}
.when{display:flex;align-items:center;gap:10px;margin:18px 0 10px;font-size:13px;color:var(--muted)}
.when:first-of-type{margin-top:0}
.when time{background:var(--mark);color:#3A2E00;font-weight:700;padding:1px 8px;border-radius:4px;font-variant-numeric:tabular-nums}
.msg{max-width:86%;padding:10px 14px;border-radius:16px;font-size:15px;line-height:1.7;margin:6px 0}
.msg.ask{background:var(--ask);border-bottom-left-radius:4px}
.msg.ans{background:#fff;border:1px solid var(--line);margin-left:auto;border-bottom-right-radius:4px}
.msg.ans small{display:block;color:var(--muted);font-size:12px;margin-top:4px}
.handoff{font-size:13px;color:var(--ink);background:#fff;border:1px dashed var(--ink);border-radius:10px;padding:8px 12px;margin:10px 0 0}

/* sections */
section{padding:72px 0}
section.alt{background:var(--mist)}
h2{font-size:30px;line-height:1.45;text-wrap:balance;color:var(--ink);margin:0 0 12px;font-weight:900}
.sec-lead{color:var(--muted);margin:0 0 32px;max-width:36em}

.pains{list-style:none;padding:0;margin:0;display:grid;gap:14px}
.pains li{background:#fff;border-left:4px solid var(--mark);padding:14px 18px;border-radius:0 10px 10px 0}
.pains strong{color:var(--ink)}

.services{display:grid;gap:0;border-top:1px solid var(--line)}
.svc{display:grid;grid-template-columns:200px 1fr auto;gap:24px;align-items:start;padding:24px 0;border-bottom:1px solid var(--line)}
.svc h3{margin:0;font-size:19px;color:var(--ink)}
.svc p{margin:0}
.svc .demo{font-size:15px;font-weight:700;white-space:nowrap}

.price{background:#fff;border:1px solid var(--line);border-radius:16px;overflow:hidden}
.price table{width:100%;border-collapse:collapse}
.price th,.price td{padding:18px 22px;text-align:left;border-bottom:1px solid var(--line);vertical-align:top}
.price tr:last-child th,.price tr:last-child td{border-bottom:0}
.price th{width:38%;font-weight:700;color:var(--ink);background:#FAFCFD}
.price .big{font-size:24px;font-weight:900;color:var(--ink)}
.price-note{font-size:14px;color:var(--muted);margin-top:14px}

.steps{counter-reset:s;list-style:none;padding:0;margin:0;display:grid;gap:22px}
.steps li{counter-increment:s;display:grid;grid-template-columns:44px 1fr;gap:16px}
.steps li::before{content:counter(s);width:44px;height:44px;border-radius:50%;background:var(--ink);color:#fff;font-weight:900;display:flex;align-items:center;justify-content:center;font-size:18px}
.steps h3{margin:6px 0 2px;font-size:18px;color:var(--ink)}
.steps p{margin:0;color:var(--text)}

.faq details{border-bottom:1px solid var(--line);padding:4px 0}
.faq summary{cursor:pointer;font-weight:700;color:var(--ink);padding:14px 28px 14px 0;list-style:none;position:relative}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"＋";position:absolute;right:0;top:14px;color:var(--muted)}
.faq details[open] summary::after{content:"－"}
.faq details p{margin:0 0 16px}

.about dl{display:grid;grid-template-columns:140px 1fr;gap:10px 20px;margin:0}
.about dt{color:var(--muted)}
.about dd{margin:0}

.contact{text-align:left}
.contact .box{background:var(--ink);color:#fff;border-radius:20px;padding:40px 36px}
.contact h2{color:#fff}
.contact p{margin:0 0 22px;max-width:34em}
.contact .btn{background:var(--mark);color:#2A2200}
.contact .btn:hover{background:#F0C845}
.contact .mail{display:block;margin-top:14px;color:#D6E2EC;font-size:15px}

footer{padding:32px 0 48px;font-size:14px;color:var(--muted)}
footer .wrap{display:flex;flex-wrap:wrap;gap:12px 24px;justify-content:space-between}
footer nav{display:flex;gap:20px;flex-wrap:wrap}
footer a{color:var(--muted)}

/* legal pages */
.legal{padding:48px 0 72px}
.legal h1{font-size:30px;color:var(--ink);margin:0 0 8px}
.legal .date{color:var(--muted);font-size:14px;margin:0 0 32px}
.legal h2{font-size:20px;margin:36px 0 10px}
.legal table{width:100%;border-collapse:collapse;font-size:16px}
.legal th,.legal td{border:1px solid var(--line);padding:12px 14px;text-align:left;vertical-align:top}
.legal th{background:var(--mist);width:30%;color:var(--ink)}
.legal ol,.legal ul{padding-left:1.4em}

@media (max-width:820px){
  body{font-size:16px}
  .hero{padding:40px 0 48px}
  .hero .wrap{grid-template-columns:1fr;gap:36px}
  .hero h1{font-size:29px}
  section{padding:52px 0}
  h2{font-size:24px}
  .svc{grid-template-columns:1fr;gap:6px}
  .price th,.price td{display:block;width:100%}
  .price th{border-bottom:0;padding-bottom:4px}
  .about dl{grid-template-columns:1fr;gap:2px}
  .about dd{margin-bottom:12px}
  .contact .box{padding:30px 22px}
  .legal th,.legal td{display:block;width:100%}
  .legal th{border-bottom:0}
}
@media (prefers-reduced-motion:no-preference){
  .log .msg,.log .when,.log .handoff{animation:in .5s ease both}
  .log > *:nth-child(2){animation-delay:.1s}.log > *:nth-child(3){animation-delay:.35s}
  .log > *:nth-child(4){animation-delay:.9s}.log > *:nth-child(5){animation-delay:1.3s}
  .log > *:nth-child(6){animation-delay:1.55s}.log > *:nth-child(7){animation-delay:2.1s}
  .log > *:nth-child(8){animation-delay:2.6s}
  @keyframes in{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}
}

.nw{display:inline-block}