*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
img{max-width:100%;display:block}
a{text-decoration:none;color:inherit}
ul,ol{list-style:none}
body{-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
@media (prefers-reduced-motion: reduce){*{animation:none!important;transition:none!important;scroll-behavior:auto!important}}
:focus-visible{outline:3px solid currentColor;outline-offset:2px}

body{font-family:var(--ff-body);background:var(--bg);color:var(--ink);line-height:1.85;font-size:16px}
.shell{position:relative}
.page-main{max-width:var(--maxw);margin:0 auto;padding:72px 24px 84px}
.page-head{margin-bottom:44px}
.eyebrow{font-family:var(--ff-disp);letter-spacing:.24em;font-size:12px;color:var(--accent);text-transform:uppercase;margin-bottom:14px}
.page-head h1{font-family:var(--ff-disp);font-weight:700;font-size:clamp(28px,5vw,46px);line-height:1.24;letter-spacing:.01em;margin-bottom:18px}
.lead{color:var(--muted);font-size:17px;max-width:62ch}
.block{margin:0 0 52px}
.block h2{font-family:var(--ff-disp);font-weight:700;font-size:clamp(21px,3.3vw,30px);margin-bottom:18px;padding-bottom:12px;border-bottom:2px solid var(--line)}
.block p{margin-bottom:15px}
.block.has-img{display:grid;grid-template-columns:1.25fr .9fr;gap:38px;align-items:center}
.block.has-img h2{border:none;padding:0}
.block-fig img{border-radius:var(--radius);width:100%;aspect-ratio:4/3;object-fit:cover;box-shadow:0 18px 40px -24px rgba(0,0,0,.4)}
@media(max-width:760px){.block.has-img{grid-template-columns:1fr;gap:22px}}
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{width:100%;text-align:left;background:none;border:none;cursor:pointer;font:inherit;font-weight:600;color:var(--ink);padding:20px 44px 20px 0;position:relative;display:block}
.faq-mark{position:absolute;right:6px;top:50%;width:14px;height:14px;transform:translateY(-50%)}
.faq-mark::before,.faq-mark::after{content:"";position:absolute;background:var(--accent);transition:.3s}
.faq-mark::before{top:6px;left:0;width:14px;height:2px}
.faq-mark::after{top:0;left:6px;width:2px;height:14px}
.faq-item.open .faq-mark::after{transform:scaleY(0)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease}
.faq-a p{padding:0 0 20px;color:var(--muted)}
.sitemap-page .sitemap-list{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:14px}
.sitemap-list a{display:block;background:var(--soft);border:1px solid var(--line);border-radius:var(--radius);padding:18px 20px;transition:.25s}
.sitemap-list a:hover{transform:translateY(-3px);border-color:var(--accent)}
.sitemap-list span{display:block;font-weight:700;font-family:var(--ff-disp)}
.sitemap-list small{color:var(--muted);font-size:12px}
.site-footer{background:var(--foot-bg);color:var(--foot-fg);margin-top:72px}
.site-footer ul{list-style:none}
.site-footer a{color:inherit;opacity:.82;transition:.2s}
.site-footer a:hover{opacity:1;color:var(--accent2)}
.site-footer .ft-name{font-family:var(--ff-disp);font-weight:700}
.site-footer .ft-tag{opacity:.7;font-size:14px}
.site-footer .ft-addr{opacity:.6;font-size:13px}
.site-footer .ft-copy{font-size:12px;opacity:.55}
/* columns */
.ft-columns .ft-in{max-width:var(--maxw);margin:0 auto;padding:56px 24px 26px;display:grid;grid-template-columns:1.6fr 1fr;gap:34px}
.ft-columns .ft-name{font-size:20px;margin-bottom:8px}
.ft-columns .ft-addr{margin-top:12px}
.ft-columns .ft-nav ul{display:flex;flex-direction:column;gap:10px;font-size:14px}
.ft-columns .ft-copy{text-align:center;padding:16px;border-top:1px solid rgba(255,255,255,.12)}
@media(max-width:760px){.ft-columns .ft-in{grid-template-columns:1fr;gap:22px}}
/* centered */
.ft-centered .ft-in{max-width:760px;margin:0 auto;padding:60px 24px 24px;text-align:center}
.ft-centered .ft-name{font-size:26px;margin-bottom:10px}
.ft-centered .ft-tag{margin-bottom:22px}
.ft-centered .ft-nav ul{display:flex;flex-wrap:wrap;justify-content:center;gap:8px 22px;font-size:14px;margin-bottom:20px}
.ft-centered .ft-addr{margin-bottom:6px}
.ft-centered .ft-copy{text-align:center;padding:16px;border-top:1px solid rgba(255,255,255,.12)}
/* split */
.ft-split .ft-in{max-width:var(--maxw);margin:0 auto;padding:64px 24px 30px;display:flex;justify-content:space-between;gap:40px;flex-wrap:wrap;align-items:flex-start}
.ft-split .ft-brand{max-width:46%}
.ft-split .ft-name{font-size:30px;margin-bottom:10px}
.ft-split .ft-addr{margin-top:14px}
.ft-split .ft-nav ul{display:grid;grid-template-columns:1fr 1fr;gap:10px 30px;font-size:14px;text-align:right}
.ft-split .ft-copy{padding:16px 24px;border-top:1px solid rgba(255,255,255,.12);max-width:var(--maxw);margin:0 auto}
@media(max-width:760px){.ft-split .ft-brand{max-width:100%}.ft-split .ft-nav ul{text-align:left}}
/* inline */
.ft-inline{border-top:3px solid var(--accent)}
.ft-inline .ft-in{max-width:var(--maxw);margin:0 auto;padding:22px 24px;display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap}
.ft-inline .ft-name{font-size:18px}
.ft-inline .ft-nav ul{display:flex;flex-wrap:wrap;gap:6px 18px;font-size:13.5px}
/* bigtype */
.ft-bigtype .ft-in{max-width:var(--maxw);margin:0 auto;padding:64px 24px 34px}
.ft-bigtype .ft-name{font-size:clamp(38px,8vw,82px);line-height:1;letter-spacing:-.02em;margin-bottom:12px}
.ft-bigtype .ft-tag{margin-bottom:24px}
.ft-bigtype .ft-nav ul{display:flex;flex-wrap:wrap;gap:6px 22px;font-size:14px;padding-top:22px;border-top:1px solid rgba(255,255,255,.14);margin-bottom:16px}
/* band */
.ft-band-top{background:var(--accent);color:var(--foot-bg)}
.ft-band-top p{max-width:var(--maxw);margin:0 auto;padding:20px 24px;font-family:var(--ff-disp);font-weight:700;font-size:clamp(16px,2.6vw,22px)}
.ft-band .ft-in{max-width:var(--maxw);margin:0 auto;padding:40px 24px 18px;display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap}
.ft-band .ft-name{font-size:20px}
.ft-band .ft-nav ul{display:flex;flex-wrap:wrap;gap:8px}
.ft-band .ft-nav a{display:inline-block;padding:7px 14px;border-radius:30px;background:rgba(255,255,255,.08);font-size:13px;opacity:1}
.ft-band .ft-nav a:hover{background:var(--accent);color:var(--foot-bg)}
.ft-band .ft-copy{text-align:center;padding:14px}
/* card */
.ft-card .ft-in{max-width:760px;margin:0 auto;padding:54px 24px 18px}
.ft-card-box{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);border-radius:18px;padding:34px 30px;text-align:center}
.ft-card .ft-name{font-size:22px;margin-bottom:8px}
.ft-card .ft-tag{margin-bottom:20px}
.ft-card .ft-nav ul{display:flex;flex-wrap:wrap;justify-content:center;gap:8px 20px;font-size:14px}
.ft-card .ft-copy{text-align:center;padding:16px}
/* stack2 */
.ft-stack2 .ft-row{border-bottom:1px solid rgba(255,255,255,.12)}
.ft-stack2 .ft-row ul{max-width:var(--maxw);margin:0 auto;padding:26px 24px;display:flex;flex-wrap:wrap;justify-content:center;gap:10px 26px;font-size:14.5px}
.ft-stack2 .ft-in{max-width:var(--maxw);margin:0 auto;padding:22px 24px;display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap}
.ft-stack2 .ft-name{font-size:18px}
/* rail */
.ft-rail .ft-in{max-width:var(--maxw);margin:0 auto;padding:0;display:grid;grid-template-columns:300px 1fr}
.ft-rail .ft-rail-brand{background:rgba(255,255,255,.05);border-right:3px solid var(--accent);padding:46px 30px}
.ft-rail .ft-name{font-size:22px;margin-bottom:10px}
.ft-rail .ft-addr{margin-top:14px}
.ft-rail .ft-nav{padding:46px 30px;display:flex;align-items:center}
.ft-rail .ft-nav ul{display:grid;grid-template-columns:1fr 1fr;gap:14px 24px;font-size:14.5px}
.ft-rail .ft-copy{text-align:center;padding:16px;border-top:1px solid rgba(255,255,255,.12)}
@media(max-width:760px){.ft-rail .ft-in{grid-template-columns:1fr}.ft-rail .ft-rail-brand{border-right:none;border-bottom:3px solid var(--accent)}}
/* chips */
.ft-chips .ft-in{max-width:820px;margin:0 auto;padding:56px 24px 20px;text-align:center}
.ft-chips .ft-name{font-size:22px;margin-bottom:18px}
.ft-chips .ft-nav ul{display:flex;flex-wrap:wrap;justify-content:center;gap:10px;margin-bottom:18px}
.ft-chips .ft-nav a{display:inline-block;padding:8px 16px;border:1px solid rgba(255,255,255,.22);border-radius:30px;font-size:13px;opacity:1}
.ft-chips .ft-nav a:hover{border-color:var(--accent);background:var(--accent);color:var(--foot-bg)}
.ft-chips .ft-addr{font-size:13px}
.ft-chips .ft-copy{text-align:center;padding:16px}
.to-top{position:fixed;right:20px;bottom:20px;width:46px;height:46px;border-radius:50%;background:var(--accent);color:#fff;display:flex;align-items:center;justify-content:center;font-size:20px;opacity:0;pointer-events:none;transform:translateY(12px);transition:.3s;z-index:60;box-shadow:0 8px 20px -8px rgba(0,0,0,.5)}
.to-top.show{opacity:1;pointer-events:auto;transform:none}
.reveal{opacity:0;transform:translateY(26px);transition:opacity .7s ease,transform .7s ease}
.reveal.in{opacity:1;transform:none}
.burger{display:none;width:42px;height:42px;background:none;border:none;cursor:pointer;flex-direction:column;justify-content:center;gap:5px;padding:8px}
.burger span{display:block;height:2px;background:currentColor;transition:.3s}
.burger[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.burger[aria-expanded="true"] span:nth-child(2){opacity:0}
.burger[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.drawer{display:none}


:root{
  --bg:#f2f3f5;--ink:#1d1d1f;--accent:#0071e3;--accent2:#6e6e73;--soft:#e8e8ed;
  --line:#d2d2d7;--muted:#6e6e73;--foot-bg:#1d1d1f;--foot-fg:#f2f3f5;
  --ff-disp:'Inter','Zen Kaku Gothic New',sans-serif;--ff-body:'Noto Sans JP',sans-serif;
  --maxw:1120px;--radius:0px;
}
body.nav-fab .to-top{display:none}
.fab-bar{position:fixed;top:0;left:0;right:0;height:62px;display:flex;align-items:center;padding:0 30px;background:rgba(29,29,31,.88);backdrop-filter:blur(8px);z-index:70}
.fab-bar .logo{font-family:var(--ff-disp);font-weight:700;color:#f5f5f7;font-size:19px;letter-spacing:.02em}
.fab{position:fixed;right:26px;bottom:26px;z-index:90;display:flex;flex-direction:column-reverse;align-items:flex-end;gap:14px}
.fab-btn{width:60px;height:60px;border-radius:50%;background:var(--accent);border:none;cursor:pointer;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:6px;box-shadow:0 14px 30px -10px rgba(0,0,0,.5);transition:.3s}
.fab-btn span{display:block;width:24px;height:2px;background:#fff;transition:.3s}
.fab-btn[aria-expanded="true"] span:nth-child(1){transform:translateY(4px) rotate(45deg)}
.fab-btn[aria-expanded="true"] span:nth-child(2){transform:translateY(-4px) rotate(-45deg)}
.fab-menu ul{display:flex;flex-direction:column;gap:10px;align-items:flex-end}
.fab-menu li{opacity:0;transform:translateY(14px) scale(.92);transition:.3s;pointer-events:none}
.fab.open .fab-menu li{opacity:1;transform:none;pointer-events:auto}
.fab.open .fab-menu li:nth-child(2){transition-delay:.04s}
.fab.open .fab-menu li:nth-child(3){transition-delay:.08s}
.fab.open .fab-menu li:nth-child(4){transition-delay:.12s}
.fab.open .fab-menu li:nth-child(5){transition-delay:.16s}
.fab.open .fab-menu li:nth-child(6){transition-delay:.2s}
.fab-menu a{background:#fff;color:var(--ink);padding:10px 18px;border-radius:30px;font-size:14px;font-weight:600;box-shadow:0 10px 22px -12px rgba(0,0,0,.5);white-space:nowrap;display:block;letter-spacing:.02em}
.fab-menu a:hover{background:var(--soft)}
.fab-menu a.is-active{background:var(--accent);color:#fff}
.arc-hero{position:relative;height:88vh;min-height:520px}
.arc-hero img{width:100%;height:100%;object-fit:cover}
.arc-hero::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(29,29,31,.45) 0%,transparent 35%,rgba(29,29,31,.7) 100%)}
.arc-cap{position:absolute;left:6vw;bottom:9vh;right:6vw;color:#f5f5f7;z-index:2;max-width:680px}
.arc-cap .k{font-family:var(--ff-disp);font-weight:600;letter-spacing:.3em;font-size:13px;color:#86868b;margin-bottom:18px}
.arc-cap h1{font-family:var(--ff-disp);font-weight:800;font-size:clamp(32px,6vw,64px);line-height:1.2;margin-bottom:20px;text-shadow:0 2px 30px rgba(0,0,0,.4);letter-spacing:-.01em}
.arc-cap p{font-size:16px;line-height:1.9;opacity:.92;margin-bottom:26px;max-width:44ch}
.btn{display:inline-block;background:var(--accent);color:#fff;padding:14px 32px;border-radius:30px;letter-spacing:.02em;font-size:14px;font-weight:600;transition:.3s;border:1px solid var(--accent)}
.btn:hover{background:#0066cc;border-color:#0066cc}
.arc-works{max-width:1280px;margin:0 auto;padding:96px 24px}
.arc-works .lead-row{display:flex;justify-content:space-between;align-items:flex-end;margin-bottom:40px;flex-wrap:wrap;gap:16px}
.arc-works h2{font-family:var(--ff-disp);font-weight:700;font-size:clamp(24px,3.4vw,34px)}
.arc-works .lead-row p{color:var(--muted);max-width:36ch}
.wgrid{display:grid;grid-template-columns:repeat(2,1fr);gap:6px}
.wcell{position:relative;overflow:hidden}
.wcell img{width:100%;height:100%;aspect-ratio:4/3;object-fit:cover;transition:transform .8s ease}
.wcell:hover img{transform:scale(1.06)}
.wcell figcaption{position:absolute;left:0;bottom:0;right:0;padding:24px;background:linear-gradient(transparent,rgba(29,29,31,.82));color:#f5f5f7}
.wcell figcaption b{font-family:var(--ff-disp);font-weight:700;font-size:19px;display:block}
.wcell figcaption span{font-size:13px;opacity:.8;letter-spacing:.04em}
.arc-band{background:var(--ink);color:#f5f5f7;padding:104px 24px;text-align:center}
.arc-band p.k{font-family:var(--ff-disp);font-weight:600;letter-spacing:.3em;color:#86868b;font-size:13px;margin-bottom:24px}
.arc-band h2{font-family:var(--ff-disp);font-weight:600;font-size:clamp(22px,3.6vw,34px);line-height:1.9;max-width:26ch;margin:0 auto;letter-spacing:-.01em}
@media(max-width:820px){.wgrid{grid-template-columns:1fr}.arc-hero{height:72vh}}

/* ===== step cards (home) ===== */
.step-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.step-card{display:flex;flex-direction:column;background:var(--soft);border:1px solid var(--line);border-radius:var(--radius);padding:30px 28px;transition:.28s;min-height:230px}
.step-card:hover{transform:translateY(-4px);border-color:var(--accent);box-shadow:0 22px 44px -28px rgba(0,0,0,.5)}
.step-card .step-no{font-family:var(--ff-disp);font-weight:700;letter-spacing:.18em;font-size:12px;color:var(--accent);margin-bottom:14px}
.step-card b{font-family:var(--ff-disp);font-weight:700;font-size:20px;margin-bottom:12px;line-height:1.4}
.step-card .step-desc{color:var(--muted);font-size:14px;line-height:1.8;flex:1}
.step-card .step-go{margin-top:18px;font-weight:700;font-size:14px;color:var(--accent)}
.step-card--map{background:var(--ink);color:#f5f5f7;border-color:var(--ink)}
.step-card--map .step-no{color:#86868b}
.step-card--map .step-desc{color:#c7c8cc}
.step-card--map .step-go{color:#5aa6f0}
@media(max-width:900px){.step-grid{grid-template-columns:1fr 1fr}}
@media(max-width:600px){.step-grid{grid-template-columns:1fr}}

/* ===== step meta + callout on subpages ===== */
.step-tag{display:inline-block;background:var(--accent);color:#fff;font-family:var(--ff-disp);font-weight:700;letter-spacing:.14em;font-size:11px;padding:6px 14px;border-radius:30px;margin-bottom:16px}
.callout{background:var(--soft);border-left:4px solid var(--accent);border-radius:var(--radius);padding:20px 24px;margin:0 0 52px;color:var(--ink)}
.callout p{margin-bottom:8px}
.callout p:last-child{margin-bottom:0}
.callout strong{color:var(--accent)}

/* ===== prev / next nav ===== */
.page-nav{display:flex;justify-content:space-between;gap:14px;margin-top:64px;padding-top:34px;border-top:1px solid var(--line);flex-wrap:wrap}
.page-nav a{flex:1;min-width:200px;background:var(--soft);border:1px solid var(--line);border-radius:var(--radius);padding:18px 22px;transition:.25s}
.page-nav a:hover{border-color:var(--accent);transform:translateY(-2px)}
.page-nav small{display:block;font-family:var(--ff-disp);letter-spacing:.12em;font-size:11px;color:var(--accent);margin-bottom:6px}
.page-nav b{font-family:var(--ff-disp);font-weight:700;font-size:15px}
.page-nav .nav-next{text-align:right}
@media(max-width:600px){.page-nav .nav-next{text-align:left}}

/* ===== sitemap as vertical list (override template card grid) ===== */
.sitemap-page .sitemap-list{display:block;grid-template-columns:none}
.sitemap-page .sitemap-list li{margin-bottom:12px}
.sitemap-page .sitemap-list a{display:block;padding:22px 26px}
.sitemap-page .sitemap-list span{font-size:18px;margin-bottom:6px}
.sitemap-page .sitemap-list small{font-size:14px;line-height:1.7;color:var(--muted)}