:root{
  --ink:#0F172A; --ink2:#1E293B; --accent:#2563EB; --accent-d:#1D4ED8;
  --paper:#F8FAFC; --white:#FFFFFF; --slate:#64748B; --slate-l:#94A3B8;
  --line:#E2E8F0; --line-d:#334155;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:"Zen Kaku Gothic New",sans-serif; color:var(--ink);
  background:var(--white); line-height:1.85; font-size:16px;
  -webkit-font-smoothing:antialiased; overflow-x:hidden;
}
h1,h2,h3,.lead,.btn,summary{word-break:auto-phrase;text-wrap:balance}
.mono{font-family:"Space Grotesk",sans-serif}
a{color:inherit;text-decoration:none}
img{max-width:100%}
.wrap{max-width:1120px;margin:0 auto;padding:0 24px}

/* --- signature motif: モノスペース番号 eyebrow --- */
.eyebrow{
  font-family:"Space Grotesk",sans-serif; font-weight:500; font-size:13px;
  letter-spacing:.14em; color:var(--accent); text-transform:uppercase;
  display:inline-flex; align-items:center; gap:10px; margin-bottom:22px;
}
.eyebrow::before{content:"//";font-weight:700;opacity:.7}

/* --- buttons --- */
.btn{
  display:inline-flex; align-items:center; gap:10px; font-weight:700;
  font-size:16px; padding:16px 30px; border-radius:999px; cursor:pointer;
  transition:transform .2s ease, box-shadow .2s ease, background .2s ease;
  white-space:nowrap; border:none;
}
.btn-primary{background:var(--accent);color:#fff;box-shadow:0 8px 24px rgba(37,99,235,.28)}
.btn-primary:hover{background:var(--accent-d);transform:translateY(-2px);box-shadow:0 12px 30px rgba(37,99,235,.36)}
.btn-ghost{background:transparent;color:var(--ink);border:1.5px solid var(--line)}
.btn-ghost:hover{border-color:var(--accent);color:var(--accent)}
.btn-lg{padding:19px 40px;font-size:17px}
.btn .arw{transition:transform .2s ease}
.btn:hover .arw{transform:translateX(4px)}

/* --- a11y --- */
a:focus-visible,button:focus-visible,summary:focus-visible,[tabindex]:focus-visible{
  outline:3px solid var(--accent);outline-offset:2px;border-radius:3px;
}
.skip-link{position:absolute;left:-9999px;top:0;background:var(--accent);color:#fff;padding:10px 16px;z-index:999}
.skip-link:focus{left:8px;top:8px}
@media (hover:none){.btn,.site-nav a,.menu-toggle{min-height:44px}}

/* --- header --- */
.site-header{
  position:sticky;top:0;z-index:40;background:rgba(255,255,255,.86);
  backdrop-filter:blur(12px);border-bottom:1px solid var(--line);
}
.site-header .wrap{display:flex;align-items:center;justify-content:space-between;height:66px}
.brand{display:flex;align-items:center;gap:11px;font-weight:900;font-size:19px;letter-spacing:-.01em}
.brand .mark{width:30px;height:30px;flex:0 0 30px}
.nav-cluster{display:flex;align-items:center;gap:30px}
.site-nav{display:flex;gap:28px}
.site-nav a{font-size:14.5px;font-weight:500;color:var(--slate);transition:color .18s}
.site-nav a:hover{color:var(--ink)}
.header-cta{font-size:14px;padding:11px 22px}
.menu-toggle{display:none;background:none;border:none;cursor:pointer;flex-direction:column;gap:5px;padding:8px}
.menu-toggle span{width:24px;height:2px;background:var(--ink);display:block}
@media(max-width:860px){
  .site-nav,.header-cta{display:none}
  .menu-toggle{display:flex}
  .site-header.open .site-nav{
    display:flex;position:absolute;top:66px;left:0;width:100%;flex-direction:column;
    background:#fff;border-bottom:1px solid var(--line);padding:14px 24px;gap:4px;
  }
  .site-header.open .site-nav a{padding:12px 0;font-size:16px;border-bottom:1px solid var(--line)}
}

/* --- FV / hero (SearchType) --- */
.hero{position:relative;width:100%;background:var(--ink);color:#fff;overflow:hidden}
.hero::before{
  content:"";position:absolute;inset:0;z-index:0;opacity:.5;
  background-image:linear-gradient(rgba(148,163,184,.08) 1px,transparent 1px),linear-gradient(90deg,rgba(148,163,184,.08) 1px,transparent 1px);
  background-size:56px 56px;
  -webkit-mask-image:radial-gradient(ellipse 80% 70% at 50% 35%,#000 40%,transparent 80%);
  mask-image:radial-gradient(ellipse 80% 70% at 50% 35%,#000 40%,transparent 80%);
}
.hero-inner{position:relative;z-index:1;max-width:1000px;margin:0 auto;padding:120px 24px 128px;text-align:center;min-height:760px;display:flex;flex-direction:column;justify-content:center;align-items:center}
.hero .eyebrow{color:#7DD3FC}
.hero h1{font-size:clamp(32px,5.2vw,60px);font-weight:900;line-height:1.28;letter-spacing:-.01em;margin-bottom:14px}
.hero .sub{font-size:clamp(15px,2vw,19px);color:var(--slate-l);margin-bottom:44px;font-weight:500}
.searchbar{
  width:100%;max-width:640px;background:#fff;border-radius:999px;
  box-shadow:0 20px 50px rgba(0,0,0,.4);display:flex;align-items:center;
  gap:14px;padding:17px 26px;margin:0 auto;
}
.searchbar .si{width:22px;height:22px;flex:0 0 22px;color:var(--slate)}
.searchbar .q{flex:1;text-align:left;color:var(--ink);font-size:clamp(15px,2.2vw,20px);font-weight:500;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;min-height:1.4em}
.searchbar .cur{width:2px;height:22px;background:var(--accent);flex:0 0 2px;animation:blink 1s step-end infinite}
@keyframes blink{50%{opacity:0}}
.hero .hero-cta{margin-top:40px;display:flex;gap:14px;flex-wrap:wrap;justify-content:center}
.hero .note{margin-top:22px;font-size:13px;color:var(--slate)}

/* --- generic section --- */
.section{padding:104px 0}
.section h2{font-size:clamp(26px,3.6vw,40px);font-weight:900;line-height:1.35;letter-spacing:-.01em}
.section .lead{font-size:clamp(16px,1.5vw,18px);color:var(--slate);margin-top:20px;max-width:32em}

/* ② lead / 共感 (asymmetric, left-hung) */
.s-lead{background:var(--paper)}
.s-lead .wrap{display:grid;grid-template-columns:1fr .7fr;gap:40px;align-items:end}
.s-lead .big{font-size:clamp(22px,3vw,34px);font-weight:900;line-height:1.62;letter-spacing:-.01em}
.s-lead .big b{color:var(--accent)}
.s-lead .body{color:var(--slate);font-size:16.5px}
@media(max-width:820px){.s-lead .wrap{grid-template-columns:1fr;gap:24px}}

/* ③ 選ばれる理由 — big numeral editorial list */
.s-why .r-list{margin-top:56px;border-top:1px solid var(--line)}
.reason{display:grid;grid-template-columns:120px 1fr;gap:36px;padding:40px 0;border-bottom:1px solid var(--line);align-items:start}
.reason .num{font-family:"Space Grotesk",sans-serif;font-weight:700;font-size:64px;line-height:1;color:var(--accent);opacity:.9}
.reason h3{font-size:clamp(20px,2.4vw,26px);font-weight:900;margin-bottom:12px}
.reason p{color:var(--slate);font-size:16px}
@media(max-width:720px){.reason{grid-template-columns:1fr;gap:8px}.reason .num{font-size:44px}}

/* ④ サービス — hairline ruled index */
.s-svc{background:var(--ink);color:#fff}
.s-svc .eyebrow{color:#7DD3FC}
.s-svc h2{color:#fff}
.svc-list{margin-top:52px;border-top:1px solid var(--line-d)}
.svc{display:grid;grid-template-columns:64px 1fr;gap:28px;padding:30px 0;border-bottom:1px solid var(--line-d);align-items:baseline}
.svc .k{font-family:"Space Grotesk",sans-serif;font-size:15px;color:var(--slate-l);font-weight:500}
.svc h3{font-size:clamp(18px,2.2vw,23px);font-weight:700;margin-bottom:6px}
.svc p{color:var(--slate-l);font-size:15.5px}
@media(max-width:640px){.svc{grid-template-columns:1fr;gap:6px}}

/* ⑤ AI検索の事実 — oversized pull */
.s-fact{background:var(--paper);text-align:center}
.fact-grid{margin-top:60px;display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.fact .n{font-family:"Space Grotesk",sans-serif;font-weight:700;letter-spacing:-.02em;color:var(--ink);line-height:1}
.fact:nth-child(2) .n{color:var(--accent)}
.fact .n-lg{font-size:clamp(60px,10vw,132px)}
.fact .n-md{font-size:clamp(48px,7vw,92px)}
.fact p{margin-top:16px;color:var(--slate);font-size:15px;max-width:20em;margin-left:auto;margin-right:auto}
.fact .src{display:block;margin-top:8px;font-size:11.5px;color:var(--slate-l)}
.fact-demo{margin-top:64px;padding:40px 32px;background:var(--ink);color:#fff;border-radius:18px;max-width:760px;margin-left:auto;margin-right:auto}
.fact-demo p{font-size:clamp(17px,2.2vw,22px);font-weight:700;line-height:1.7}
.fact-demo .em{color:#7DD3FC}
.fact-note{margin-top:20px;font-size:12.5px;color:var(--slate-l);max-width:44em;margin-left:auto;margin-right:auto}
@media(max-width:720px){.fact-grid{grid-template-columns:1fr;gap:44px}}

/* ⑥ 代表メッセージ — asymmetric two column */
.s-msg .wrap{display:grid;grid-template-columns:.85fr 1.15fr;gap:56px;align-items:start}
.s-msg .mtitle{font-size:clamp(24px,3.2vw,36px);font-weight:900;line-height:1.5;letter-spacing:-.01em}
.s-msg .mtitle b{color:var(--accent)}
.s-msg .mbody{color:var(--ink2);font-size:16.5px}
.s-msg .mbody p{margin-bottom:20px}
.s-msg .sign{margin-top:10px;font-weight:700;color:var(--slate);font-size:14px}
.s-msg .sign::before{content:"— ";}
@media(max-width:820px){.s-msg .wrap{grid-template-columns:1fr;gap:28px}}

/* ⑦ 料金 — 3 plan cards (許容1回) */
.s-price{background:var(--paper)}
.s-price .head{text-align:center}
.s-price .lead{margin-left:auto;margin-right:auto}
.plans{margin-top:60px;display:grid;grid-template-columns:repeat(3,1fr);gap:22px;align-items:stretch}
.plan{background:#fff;border:1px solid var(--line);border-radius:18px;padding:36px 28px;display:flex;flex-direction:column}
.plan.feat{border:2px solid var(--accent);box-shadow:0 18px 44px rgba(37,99,235,.16);position:relative}
.plan.feat .tag{position:absolute;top:-13px;left:50%;transform:translateX(-50%);background:var(--accent);color:#fff;font-size:12px;font-weight:700;padding:5px 16px;border-radius:999px;white-space:nowrap}
.plan .pn{font-weight:700;font-size:17px}
.plan .pp{margin:16px 0 4px;font-family:"Space Grotesk",sans-serif;font-weight:700;font-size:40px;color:var(--ink);letter-spacing:-.02em}
.plan .pp small{font-size:15px;color:var(--slate);font-weight:500;font-family:"Zen Kaku Gothic New"}
.plan .pd{color:var(--slate);font-size:14.5px;margin-bottom:24px;flex:1}
.plan .btn{width:100%;justify-content:center}
.price-note{text-align:center;margin-top:26px;font-size:13.5px;color:var(--slate)}
@media(max-width:820px){.plans{grid-template-columns:1fr;max-width:380px;margin-left:auto;margin-right:auto}}

/* ⑧ FAQ — hairline index */
.s-faq .faq-list{margin-top:48px;border-top:1px solid var(--line)}
.s-faq details{border-bottom:1px solid var(--line)}
.s-faq summary{list-style:none;cursor:pointer;padding:26px 44px 26px 0;font-weight:700;font-size:clamp(16px,1.9vw,19px);position:relative;display:flex;gap:16px}
.s-faq summary::-webkit-details-marker{display:none}
.s-faq summary .q{font-family:"Space Grotesk";color:var(--accent);flex:0 0 auto}
.s-faq summary::after{content:"+";position:absolute;right:6px;top:24px;font-size:26px;color:var(--slate);font-weight:400;transition:transform .25s}
.s-faq details[open] summary::after{transform:rotate(45deg)}
.s-faq .a{padding:0 44px 28px 40px;color:var(--slate);font-size:16px}
@media(max-width:640px){.s-faq .a{padding:0 0 26px 0}}

/* ⑨ 流れ — big numeral zigzag */
.s-flow{background:var(--ink);color:#fff}
.s-flow .eyebrow{color:#7DD3FC}
.s-flow h2{color:#fff}
.flow{margin-top:56px;display:flex;flex-direction:column;gap:2px}
.fstep{display:grid;grid-template-columns:96px 1fr;gap:28px;padding:26px 0;border-top:1px solid var(--line-d);align-items:baseline}
.fstep .fn{font-family:"Space Grotesk";font-weight:700;font-size:34px;color:var(--accent);line-height:1}
.fstep h3{font-size:19px;font-weight:700;margin-bottom:5px}
.fstep p{color:var(--slate-l);font-size:15.5px}
@media(max-width:640px){.fstep{grid-template-columns:1fr;gap:6px}}

/* ⑩ 会社情報 */
.s-info .info-tbl{margin-top:44px;border-top:1px solid var(--line)}
.s-info .row{display:grid;grid-template-columns:200px 1fr;gap:20px;padding:20px 0;border-bottom:1px solid var(--line);font-size:15.5px}
.s-info .row .k{color:var(--slate);font-weight:500}
@media(max-width:640px){.s-info .row{grid-template-columns:1fr;gap:2px}.s-info .row .k{font-size:13px}}

/* ⑪ 最終CTA — full-bleed band */
.s-cta{background:var(--ink);color:#fff;text-align:center;padding:120px 0}
.s-cta::before{content:"";position:absolute;inset:0;z-index:0;opacity:.4;mix-blend-mode:screen;background:radial-gradient(circle at 50% 120%,rgba(37,99,235,.5),transparent 60%)}
.s-cta{position:relative;overflow:hidden}
.s-cta .wrap{position:relative;z-index:1}
.s-cta h2{color:#fff;font-size:clamp(26px,3.8vw,42px);font-weight:900;margin-bottom:20px}
.s-cta p{color:var(--slate-l);font-size:17px;margin-bottom:40px;max-width:30em;margin-left:auto;margin-right:auto}

/* --- footer --- */
.site-footer{background:#0A0F1C;color:var(--slate-l);padding:56px 0 40px;font-size:14px}
.site-footer .wrap{display:flex;justify-content:space-between;gap:30px;flex-wrap:wrap;align-items:flex-start}
.site-footer .brand{color:#fff;font-size:17px;margin-bottom:10px}
.site-footer .fdesc{max-width:24em;font-size:13.5px;line-height:1.8}
.site-footer nav{display:flex;gap:26px;flex-wrap:wrap}
.site-footer nav a:hover{color:#fff}
.site-footer .copy{width:100%;border-top:1px solid var(--line-d);margin-top:36px;padding-top:22px;font-size:12.5px;color:var(--slate)}

/* --- reveal (要素ごとに張る) --- */
.rv{opacity:0}
.j .rv{opacity:0}
html:not(.j) .rv{opacity:1}

@media(max-width:768px){
  .section{padding:72px 0}
  .hero-inner{padding:96px 20px 104px;min-height:auto}
  .s-cta{padding:88px 0}
  .site-header .wrap{height:60px}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .rv{opacity:1!important;transform:none!important}
  .searchbar .cur{animation:none}
}


/* ===== fixed-page additions ===== */
.page-hero{position:relative;background:var(--ink);color:#fff;padding:96px 0 76px;text-align:center;overflow:hidden}
.page-hero::before{content:"";position:absolute;inset:0;z-index:0;opacity:.5;background-image:linear-gradient(rgba(148,163,184,.08) 1px,transparent 1px),linear-gradient(90deg,rgba(148,163,184,.08) 1px,transparent 1px);background-size:56px 56px;-webkit-mask-image:radial-gradient(ellipse 80% 90% at 50% 20%,#000 40%,transparent 82%);mask-image:radial-gradient(ellipse 80% 90% at 50% 20%,#000 40%,transparent 82%)}
.page-hero .wrap{position:relative;z-index:1}
.page-hero h1{font-size:clamp(28px,4vw,44px);font-weight:900;letter-spacing:-.01em}
.page-hero .ph-sub{color:var(--slate-l);margin-top:14px;font-size:16px}
.page-hero .eyebrow{color:#7DD3FC;justify-content:center}
.prose{max-width:760px;margin:0 auto;font-size:16px;color:var(--ink2)}
.prose h2{font-size:clamp(22px,2.6vw,30px);font-weight:900;margin:48px 0 16px;letter-spacing:-.01em}
.prose h2:first-child{margin-top:0}
.prose h3{font-size:19px;font-weight:700;margin:28px 0 8px}
.prose p{margin-bottom:16px}
.prose ul{margin:0 0 16px 1.3em}
.prose li{margin-bottom:8px}
.prose .muted{color:var(--slate);font-size:14px}
.form-slot{max-width:680px;margin:0 auto}
.form-embed{width:100%;min-height:520px;border:0;border-radius:16px;background:#fff}
.contact-alt{max-width:680px;margin:28px auto 0;padding:24px;background:var(--paper);border:1px solid var(--line);border-radius:14px;font-size:15px;color:var(--slate)}