:root{
  --ink:#1a1a1a;
  --ink-soft:#555;
  --paper:#ffffff;
  --gray:#f7f7f7;
  --line:#e6e6e6;
  --accent:#0d6e5f;
  --ls:0.06em;
  --ls-wide:0.14em;
}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:"Hiragino Kaku Gothic ProN","Hiragino Sans","Yu Gothic Medium","Yu Gothic",sans-serif;
  font-size:14px;
  line-height:2;
  letter-spacing:var(--ls);
  -webkit-font-smoothing:antialiased;
  font-feature-settings:"palt";
}
.en{font-family:"Helvetica Neue",Helvetica,Arial,sans-serif}

a{color:inherit}
.wrap{max-width:1040px;margin:0 auto;padding:0 24px}
@media(min-width:768px){.wrap{padding:0 48px}}

/* ---------- header ---------- */
header{
  position:sticky;top:0;z-index:10;
  background:rgba(255,255,255,.92);backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
}
.hd{display:flex;align-items:center;justify-content:space-between;height:56px}
.logo{font-weight:700;font-size:14px;letter-spacing:var(--ls);text-decoration:none}
.logo small{font-weight:400;color:var(--ink-soft);margin-left:.8em;font-size:10px;letter-spacing:var(--ls-wide)}
nav{display:flex;gap:28px;align-items:center}
nav a{font-size:12px;text-decoration:none;letter-spacing:var(--ls);color:var(--ink-soft)}
nav a:hover{color:var(--ink)}
.btn{
  display:inline-block;background:var(--ink);color:#fff;
  padding:.9em 2.2em;font-size:13px;letter-spacing:var(--ls-wide);
  text-decoration:none;border:1px solid var(--ink);
  transition:background .25s,color .25s;
}
.btn:hover{background:#fff;color:var(--ink)}
.btn:focus-visible,nav a:focus-visible,.logo:focus-visible{outline:2px solid var(--accent);outline-offset:3px}
nav .btn{padding:.55em 1.4em;font-size:11px}
@media(max-width:640px){nav a:not(.btn){display:none}}

/* ---------- hero ---------- */
.hero{position:relative;padding:14vh 0 16vh;overflow:hidden}
.hero h1{
  margin:0 0 .6em;
  font-size:clamp(34px,6.4vw,76px);
  line-height:1.55;letter-spacing:.04em;font-weight:700;
  text-wrap:balance;
}
.hero h1 .kagi{color:var(--accent)}
.hero .lead{max-width:34em;color:var(--ink-soft);line-height:2.2;margin:0 0 3.5em}
.spec{display:flex;gap:0;flex-wrap:wrap;margin:0 0 3em;padding:0;list-style:none}
.spec li{
  font-size:11px;letter-spacing:var(--ls-wide);color:var(--ink);
  padding:0 1.6em;border-left:1px solid var(--line);
}
.spec li:first-child{padding-left:0;border-left:none}
.hero .note{font-size:10px;color:var(--ink-soft);letter-spacing:var(--ls);margin-top:2em}
.tate{
  position:absolute;top:12vh;right:24px;
  writing-mode:vertical-rl;font-size:11px;letter-spacing:.42em;
  color:var(--ink-soft);
}
@media(max-width:820px){.tate{display:none}}

/* ---------- sections ---------- */
section{padding:110px 0}
section.gray{background:var(--gray)}
.eyebrow{
  display:flex;align-items:baseline;gap:1.2em;margin:0 0 3.2em;
}
.eyebrow .ja{font-size:12px;font-weight:700;letter-spacing:var(--ls-wide)}
.eyebrow .en-label{font-size:10px;letter-spacing:.22em;color:var(--accent);text-transform:uppercase}
h2{
  font-size:clamp(22px,3.4vw,34px);line-height:1.7;font-weight:700;
  letter-spacing:.05em;margin:0 0 1.4em;text-wrap:balance;
}
.body{max-width:36em;color:var(--ink-soft)}
.body strong{color:var(--ink)}

/* problem list */
.plist{list-style:none;margin:3em 0 0;padding:0;border-top:1px solid var(--line)}
.plist li{
  border-bottom:1px solid var(--line);padding:1.4em 0 1.4em 2em;position:relative;
  line-height:1.9;
}
.plist li::before{content:"—";position:absolute;left:0;color:var(--accent)}
section.gray .plist li{border-color:#e0e0e0}

/* compare table */
.tblwrap{overflow-x:auto;margin-top:3em}
table{border-collapse:collapse;width:100%;min-width:560px;font-size:13px;line-height:1.8}
th,td{border-top:1px solid var(--line);padding:1.2em 1.4em;text-align:left;vertical-align:top;font-weight:400}
thead th{border-top:none;font-size:11px;letter-spacing:var(--ls-wide);color:var(--ink-soft);padding-top:0}
thead th.hl{color:var(--ink);font-weight:700}
tbody th{width:7em;color:var(--ink-soft);font-size:11px;letter-spacing:var(--ls-wide)}
td.hl{background:var(--gray);font-weight:700}
tbody tr:last-child th,tbody tr:last-child td{border-bottom:1px solid var(--line)}

/* services */
.svc{display:grid;gap:1px;background:var(--line);border:1px solid var(--line);margin-top:3em}
@media(min-width:720px){.svc{grid-template-columns:1fr 1fr}}
.svc div{background:var(--paper);padding:2.6em 2.4em}
.svc h3{margin:0 0 .9em;font-size:15px;letter-spacing:var(--ls-wide)}
.svc h3 span{display:block;font-size:9px;letter-spacing:.24em;color:var(--accent);margin-bottom:1em;text-transform:uppercase}
.svc p{margin:0;color:var(--ink-soft);font-size:13px;line-height:2}
.svc-note{font-size:11px;color:var(--ink-soft);margin-top:2.4em;letter-spacing:var(--ls)}

/* plans */
.plans{display:grid;gap:20px;margin-top:3.4em}
@media(min-width:900px){.plans{grid-template-columns:repeat(4,1fr)}}
@media(min-width:640px) and (max-width:899px){.plans{grid-template-columns:1fr 1fr}}
.plan{border:1px solid var(--line);background:var(--paper);padding:2.4em 1.9em;display:flex;flex-direction:column}
.plan .tier{font-size:9px;letter-spacing:.24em;color:var(--accent);text-transform:uppercase;margin-bottom:1.6em}
.plan h3{margin:0 0 .2em;font-size:16px;letter-spacing:var(--ls)}
.plan .price{font-size:13px;margin:0 0 1.2em;color:var(--ink-soft)}
.plan .price b{font-size:22px;color:var(--ink);font-weight:700;letter-spacing:.02em}
.plan .for{font-size:12px;font-weight:700;line-height:1.8;margin:0 0 1.4em;padding-bottom:1.4em;border-bottom:1px solid var(--line)}
.plan ul{list-style:none;margin:0;padding:0;font-size:12px;color:var(--ink-soft);line-height:1.9}
.plan ul li{padding:.35em 0 .35em 1.4em;position:relative}
.plan ul li::before{content:"・";position:absolute;left:0}
.plan.reco{background:var(--ink);color:#fff;border-color:var(--ink);position:relative}
.plan.reco .price,.plan.reco ul{color:#fff}
.plan.reco .price b{color:#fff}
.plan.reco .for{border-color:#3a3a3a}
.plan.reco .tier{color:#7fd0c3}
.plan.reco::after{
  content:"おすすめ";position:absolute;top:-1px;right:-1px;
  background:var(--accent);color:#fff;font-size:9px;letter-spacing:.2em;
  padding:.5em 1.2em;
}
.plan .exc{font-size:10px;color:var(--ink-soft);margin-top:1.2em}
.plan.reco .exc{color:#aaa}
.plans-note{font-size:11px;color:var(--ink-soft);margin-top:2.4em}

/* profile */
.prof{display:grid;gap:48px;margin-top:1em}
@media(min-width:820px){.prof{grid-template-columns:5fr 4fr}}
.prof .facts{list-style:none;margin:0;padding:0;border-top:1px solid #e0e0e0}
.prof .facts li{border-bottom:1px solid #e0e0e0;padding:1.3em 0;display:flex;gap:2em;font-size:13px;line-height:1.9}
.prof .facts .k{width:8em;flex-shrink:0;font-size:10px;letter-spacing:var(--ls-wide);color:var(--ink-soft);padding-top:.4em}
.prof .note-link{display:inline-block;margin-top:2em;font-size:12px;letter-spacing:var(--ls);color:var(--ink);text-decoration:none;border-bottom:1px solid var(--ink);padding-bottom:.2em}
.prof .note-link:hover{color:var(--accent);border-color:var(--accent)}

/* steps */
.steps{counter-reset:s;list-style:none;margin:3em 0 0;padding:0;display:grid;gap:1px;background:var(--line);border:1px solid var(--line)}
@media(min-width:720px){.steps{grid-template-columns:1fr 1fr 1fr}}
.steps li{background:var(--paper);padding:2.6em 2.4em;counter-increment:s}
.steps li::before{
  content:"0" counter(s);display:block;
  font-size:11px;letter-spacing:.24em;color:var(--accent);margin-bottom:1.4em;
  font-family:"Helvetica Neue",Helvetica,Arial,sans-serif;
}
.steps h3{margin:0 0 .8em;font-size:15px;letter-spacing:var(--ls)}
.steps p{margin:0;font-size:12.5px;color:var(--ink-soft);line-height:2}

/* faq */
.faq{margin-top:3em;border-top:1px solid #e0e0e0}
.faq details{border-bottom:1px solid #e0e0e0}
.faq summary{
  cursor:pointer;list-style:none;padding:1.6em 3em 1.6em 0;position:relative;
  font-weight:700;font-size:13.5px;line-height:1.8;letter-spacing:var(--ls);
}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{
  content:"+";position:absolute;right:.4em;top:50%;transform:translateY(-50%);
  font-family:"Helvetica Neue",Helvetica,Arial,sans-serif;font-weight:400;
  color:var(--accent);font-size:18px;transition:transform .25s;
}
.faq details[open] summary::after{transform:translateY(-50%) rotate(45deg)}
.faq .a{padding:0 0 1.8em;max-width:38em;color:var(--ink-soft);font-size:13px;line-height:2.1}
.faq summary:focus-visible{outline:2px solid var(--accent);outline-offset:2px}

/* closing */
.closing{background:var(--ink);color:#fff;padding:130px 0;text-align:center}
.closing h2{color:#fff;font-size:clamp(22px,3.6vw,36px);margin-bottom:1.2em}
.closing p{color:#bbb;font-size:13px;line-height:2.2;margin:0 0 3.4em}
.closing .btn{background:#fff;color:var(--ink);border-color:#fff;padding:1.1em 3.4em}
.closing .btn:hover{background:var(--ink);color:#fff}
.closing .sub{font-size:10px;color:#888;margin-top:2.4em;letter-spacing:var(--ls)}

footer{padding:40px 0;font-size:10px;color:var(--ink-soft);letter-spacing:var(--ls)}
footer .wrap{display:flex;flex-wrap:wrap;gap:2em;justify-content:space-between}
footer a{text-decoration:none;color:var(--ink-soft)}
footer a:hover{color:var(--ink)}

/* legal pages (tokusho / privacy) */
.legal{padding:80px 0 120px}
.legal h1{font-size:clamp(20px,3vw,28px);letter-spacing:.05em;line-height:1.7;margin:0 0 2em}
.legal dl{border-top:1px solid var(--line);max-width:44em}
.legal dl div{display:grid;grid-template-columns:11em 1fr;gap:1em;border-bottom:1px solid var(--line);padding:1.2em 0;font-size:13px;line-height:2}
.legal dt{color:var(--ink-soft);font-size:11px;letter-spacing:var(--ls-wide);padding-top:.3em}
.legal dd{margin:0}
.legal .prose{max-width:40em;font-size:13px;color:var(--ink-soft)}
.legal .prose h2{font-size:15px;margin:2.4em 0 .8em;color:var(--ink)}
@media(max-width:560px){.legal dl div{grid-template-columns:1fr;gap:.2em}}

/* reveal */
.rv{opacity:0;transform:translateY(16px);transition:opacity .8s ease,transform .8s ease}
.rv.in{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){
  .rv{opacity:1;transform:none;transition:none}
  html{scroll-behavior:auto}
}