/* 参考サイトに合わせた構成: 深い青黒の地、シアン/ミント/バイオレットの3色ライン、グリッド背景、ガラスの球体、角丸8〜16pxの端正なカード。 */
:root{
  --surface:#ffffff; --surface-raised:#EDF1F6; --surface-deep:#E3E9F0; --surface-card:#ffffff; --surface-steel:#E8EDF3;
  --content:#0B1218; --body:#51606B; --muted:#51606B; --label:#51606B;
  --border:#D9DEE5; --border-strong:#CBD3DC; --ink:#ffffff;
  --primary:#009FAC; --secondary:#00857A; --tertiary:#9A2FB0; --blue:#518CF9;
  --soft-p:rgba(0,159,172,.08); --soft-s:rgba(0,133,122,.08); --soft-t:rgba(154,47,176,.08);
  --grid:rgba(81,140,249,.10); --shadow:0 18px 40px rgba(15,40,70,.10); --orb-bg:radial-gradient(circle at 32% 28%,#fff 0 14%,transparent 34%),linear-gradient(145deg,rgba(81,140,249,.55),rgba(0,159,172,.35) 45%,rgba(154,47,176,.5)); --orb-line:rgba(81,140,249,.55); --orb-in:rgba(255,255,255,.6); --ring-a:rgba(0,159,172,.55); --ring-b:rgba(154,47,176,.45);
  --font:"Inter","Noto Sans JP","Hiragino Sans","Yu Gothic",Meiryo,system-ui,sans-serif;
  color-scheme:light;
}
:root[data-theme="dark"]{
  --surface:#0B1218; --surface-raised:#0F1B25; --surface-deep:#081D2E; --surface-card:#111820; --surface-steel:#101720;
  --content:#ffffff; --body:#B9C2CC; --muted:#9CA3AF; --label:#8FA1B5;
  --border:#22313D; --border-strong:#2E3C49; --ink:#000;
  --primary:#00E0FF; --secondary:#00FFB2; --tertiary:#C77BFF; --blue:#518CF9;
  --soft-p:rgba(0,224,255,.10); --soft-s:rgba(0,255,178,.09); --soft-t:rgba(199,123,255,.10);
  --grid:rgba(81,140,249,.09); --shadow:0 24px 64px rgba(0,0,0,.26);
  --orb-bg:linear-gradient(145deg,rgba(255,255,255,.24),rgba(81,140,249,.07) 42%,rgba(199,123,255,.23)); --orb-line:rgba(255,255,255,.34); --orb-in:rgba(255,255,255,.14); --ring-a:rgba(86,225,237,.34); --ring-b:rgba(199,123,255,.35);
  color-scheme:dark;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
[id]{scroll-margin-top:88px}
body{margin:0;background:var(--surface);color:var(--content);font-family:var(--font);-webkit-font-smoothing:antialiased;word-break:auto-phrase;line-break:strict;overflow-wrap:anywhere;transition:background .35s,color .35s}
a{color:inherit;text-decoration:none}
h1,h2,h3,p{margin-top:0}h1,h2,h3{letter-spacing:-.025em;text-wrap:balance}p{line-height:1.8}
:focus-visible{outline:2px solid var(--primary);outline-offset:3px}
.shell{max-width:1280px;margin:0 auto;padding-inline:clamp(16px,3vw,32px)}
.label{display:flex;align-items:center;gap:8px;color:var(--label);font-size:12px;font-weight:500;letter-spacing:.1em;line-height:1;text-transform:uppercase}
.label::before{content:"";width:7px;height:7px;border-radius:50%;background:linear-gradient(90deg,var(--blue),var(--primary),var(--tertiary))}
.topline{position:fixed;inset:0 0 auto;height:4px;z-index:50;background:linear-gradient(90deg,#0E3F99 0%,#518CF9 20%,#009FAC 40%,#56E1ED 60%,#C64AD4 80%,#770884 100%)}

/* header */
header{position:sticky;top:0;z-index:40;height:80px;background:color-mix(in srgb,var(--surface) 88%,transparent);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);border-bottom:1px solid color-mix(in srgb,var(--border) 70%,transparent)}
.nav{display:flex;align-items:center;justify-content:space-between;height:100%;gap:16px}
.brand{font-size:20px;font-weight:700;letter-spacing:-.045em;line-height:1}
.brand small{display:block;margin-top:7px;color:var(--label);font-size:9px;font-weight:500;letter-spacing:.12em}
.links{display:flex;align-items:center;gap:32px}
.links>a{color:var(--body);font-size:13px;transition:color .2s}.links>a:hover{color:var(--tertiary)}
.toggle{display:flex;align-items:center;gap:7px;height:36px;padding:0 12px;border:1px solid var(--border);border-radius:8px;background:transparent;color:var(--content);font:500 11px var(--font);letter-spacing:.08em;cursor:pointer}
.toggle:hover{border-color:var(--primary)}
.cta{display:inline-flex;align-items:center;justify-content:space-between;gap:22px;height:56px;padding:0 24px;border:0;border-radius:8px;background:linear-gradient(90deg,var(--primary),var(--secondary));color:var(--ink);font:600 14px var(--font);cursor:pointer;transition:filter .2s,transform .2s}
.cta:hover{filter:brightness(1.1);transform:translateY(-2px)}
.links .cta{height:44px;padding:0 18px;color:var(--ink)}
.menu-btn{display:none;width:36px;height:36px;border:1px solid var(--border);border-radius:8px;background:transparent;color:var(--content);cursor:pointer;place-items:center}
.menu-btn i{display:block;width:16px;height:1.5px;background:currentColor;position:relative;transition:background .2s}
.menu-btn i::before,.menu-btn i::after{content:"";position:absolute;left:0;width:16px;height:1.5px;background:currentColor;transition:transform .25s}
.menu-btn i::before{top:-5px}.menu-btn i::after{top:5px}
.menu-btn[aria-expanded="true"] i{background:transparent}
.menu-btn[aria-expanded="true"] i::before{transform:translateY(5px) rotate(45deg)}
.menu-btn[aria-expanded="true"] i::after{transform:translateY(-5px) rotate(-45deg)}
.drawer{position:fixed;inset:80px 0 auto;z-index:39;padding:8px clamp(16px,3vw,32px) 24px;background:color-mix(in srgb,var(--surface) 96%,transparent);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);border-bottom:1px solid var(--border)}
.drawer a{display:flex;justify-content:space-between;padding:16px 0;border-bottom:1px solid var(--border);font-size:16px;font-weight:500}
.drawer a span{color:var(--primary)}
.drawer a:last-child{border-bottom:0}
.text-link{font-size:14px;font-weight:500}.text-link span{color:var(--primary);margin-left:8px}

/* hero */
.hero{position:relative;overflow:hidden;background:linear-gradient(135deg,var(--surface) 0%,var(--surface-raised) 52%,var(--surface-deep) 100%)}
.hero::before{content:"";position:absolute;inset:0;background-image:linear-gradient(var(--grid) 1px,transparent 1px),linear-gradient(90deg,var(--grid) 1px,transparent 1px);background-size:64px 64px}
.hero::after{content:"";position:absolute;inset:0;background:radial-gradient(circle at 82% 17%,rgba(199,123,255,.22),transparent 20%),radial-gradient(circle at 70% 88%,rgba(0,224,255,.13),transparent 26%)}
.hero-inner{position:relative;z-index:1;display:grid;grid-template-columns:1.2fr .8fr;min-height:680px;padding-block:112px 80px}
.hero-copy{align-self:end}
.hero h1{font-size:clamp(46px,7.5vw,96px);font-weight:700;line-height:1.05;margin:22px 0 28px}
.hero h1 .grad{background:linear-gradient(100deg,var(--content) 2%,var(--primary) 50%,var(--content) 96%);background-size:200% 100%;-webkit-background-clip:text;background-clip:text;color:transparent;animation:pan 9s ease-in-out infinite alternate}
@keyframes pan{to{background-position:100% 0}}
.lead{color:var(--body);font-size:18px;max-width:590px}
.actions{display:flex;align-items:center;gap:24px;margin-top:36px;flex-wrap:wrap}
.orbit{position:relative;align-self:center;justify-self:end;width:420px;height:420px}
.ring{position:absolute;inset:0;border:1px solid var(--ring-a);border-radius:50%;animation:spin 40s linear infinite}
.ring::before{content:"";position:absolute;inset:47px;border:1px solid var(--ring-b);border-radius:50%}
.ring::after{content:"";position:absolute;left:65px;top:45px;width:12px;height:12px;border-radius:50%;background:linear-gradient(130deg,var(--blue),var(--primary),var(--tertiary));filter:blur(1px);box-shadow:0 0 18px var(--primary)}
@keyframes spin{to{transform:rotate(360deg)}}
.orb{position:absolute;left:112px;top:111px;width:196px;height:196px;border-radius:50%;background:var(--orb-bg);border:1px solid var(--orb-line);box-shadow:inset 18px 18px 48px var(--orb-in),var(--shadow);animation:bob 7s ease-in-out infinite}
@keyframes bob{50%{transform:translateY(-10px)}}
.caption{position:absolute;right:-3px;bottom:24px;text-align:right;color:var(--label);font-size:11px;letter-spacing:.1em}
.caption b{display:block;margin-top:6px;color:var(--content);font-size:28px;letter-spacing:-.04em}

/* stats */
.stats{border-block:1px solid var(--border)}
.stat-grid{display:grid;grid-template-columns:repeat(3,1fr)}
.stat{padding:28px 32px;border-right:1px solid var(--border)}.stat:last-child{border:0}
.stat strong{display:block;font-size:48px;font-weight:600;letter-spacing:-.06em;line-height:1}
.stat strong em{font-style:normal;color:var(--primary)}
.stat span{display:block;margin-top:9px;color:var(--muted);font-size:13px}

/* sections */
section.pad{padding:128px 0}
h2{font-size:clamp(30px,4vw,48px);font-weight:600;line-height:1.2;margin:20px 0 0}
.intro-grid{display:grid;grid-template-columns:1fr 1fr;gap:80px;align-items:end}
.intro-copy{color:var(--body);font-size:20px;max-width:560px;margin:0}
.intro-copy b{color:var(--content);font-weight:600}

.business{background:var(--surface-raised);border-block:1px solid var(--border)}
.head{display:flex;align-items:end;justify-content:space-between;gap:32px;margin-bottom:48px}
.head p{color:var(--muted);font-size:14px;max-width:336px;margin:0}
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.card{--c:var(--primary);--soft:var(--soft-p);--art:rgba(81,140,249,.58);position:relative;overflow:hidden;display:flex;flex-direction:column;min-height:420px;padding:32px;border:1px solid var(--border);border-radius:12px;background:var(--surface-card);transition:border-color .2s,transform .2s}
.card:nth-child(2){--c:var(--secondary);--soft:var(--soft-s);--art:rgba(0,255,178,.42)}
.card:nth-child(3){--c:var(--tertiary);--soft:var(--soft-t);--art:rgba(199,123,255,.53)}
.card:hover{border-color:var(--c);transform:translateY(-5px)}
.art{position:absolute;right:-1px;top:-1px;width:205px;height:190px;border-radius:0 0 0 100%;opacity:.9;background:radial-gradient(circle at 30% 28%,rgba(255,255,255,.22),transparent 16%),linear-gradient(135deg,var(--art),rgba(0,224,255,.08) 44%,transparent 70%)}
.idx{position:relative;color:var(--label);font-size:12px;letter-spacing:.1em}
.card h3{position:relative;font-size:24px;font-weight:600;line-height:1.3;margin:70px 0 18px}
.tags{position:relative;display:flex;flex-wrap:wrap;gap:8px;margin-bottom:28px}
.tag{padding:5px 13px;border-radius:9999px;font-size:13px;line-height:1.6;color:var(--c);background:var(--soft);border:1px solid color-mix(in srgb,var(--c) 30%,transparent)}
.tag small{opacity:.75;margin-left:4px;font-size:11.5px}
.card-link{margin-top:auto;font-size:13px;font-weight:500}
.card-link::after{content:"";position:absolute;inset:0;border-radius:12px;z-index:2}
.card:hover .card-link span{transform:translateX(4px)}.card-link span{display:inline-block;transition:transform .2s}
.card:has(.card-link:focus-visible){outline:2px solid var(--c);outline-offset:3px}.card-link:focus-visible{outline:none}.card-link span{color:var(--c);font-size:18px;margin-left:10px}

.adv{position:relative;overflow:hidden;background:linear-gradient(to right bottom,var(--surface) 0%,var(--surface-raised) 50%,var(--surface) 100%)}
.adv::before{content:"";position:absolute;right:10%;top:48px;width:240px;height:240px;opacity:.35;background:radial-gradient(circle,var(--primary) 0 1px,transparent 1.5px);background-size:18px 18px}
.adv-grid{position:relative;display:grid;grid-template-columns:.8fr 1.2fr;gap:96px}
.adv-copy>p{color:var(--body);font-size:18px;max-width:570px}
.caps{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:40px 0}
.cap{border-top:1px solid var(--border-strong);padding-top:13px;color:var(--body);font-size:14px}
.cap b{color:var(--primary);font-size:12px;margin-right:8px}
.one{margin:0 0 40px;padding:24px;border:1px solid var(--border);border-radius:12px;background:var(--surface-card)}
.one h3{font-size:15px;font-weight:600;margin:0 0 16px}
.one-row{display:grid;grid-template-columns:1fr auto 1fr;gap:16px;align-items:center}
.col{display:grid;gap:6px;font-size:13px;min-width:0}
.col span{display:flex;justify-content:space-between;gap:8px;padding:8px 12px;border-radius:8px;background:var(--surface-raised);color:var(--body)}
.col span i{font-style:normal;font-size:11px;color:var(--muted)}
.vs{color:var(--primary);font-size:18px}
.isc{padding:18px;border-radius:12px;text-align:center;font-weight:600;font-size:14px;line-height:1.6;color:var(--ink);background:linear-gradient(120deg,var(--primary),var(--secondary))}
.isc small{display:block;font-size:10px;letter-spacing:.12em;opacity:.75}

.process{border-top:1px solid var(--border);padding:96px 0}
.process-grid{display:grid;grid-template-columns:1fr 1.75fr;gap:48px}
.steps{border-top:1px solid var(--border-strong)}
.step{display:grid;grid-template-columns:64px 1fr auto;align-items:center;min-height:86px;border-bottom:1px solid var(--border)}
.num{display:flex;align-items:center;justify-content:center;width:40px;height:40px;border:1px solid var(--border-strong);border-radius:50%;font-size:14px;transition:border-color .2s,color .2s}
.step:hover .num{border-color:var(--primary);color:var(--primary)}
.step h3{font-size:16px;font-weight:500;margin:0}
.step small{color:var(--muted);font-size:11px;letter-spacing:.1em}

.contact{padding:0 0 128px}
.box{position:relative;overflow:hidden;padding:64px;border:1px solid var(--border);border-radius:16px;background:var(--surface-steel)}
.box::after{content:"";position:absolute;right:-180px;top:-230px;width:520px;height:520px;background:radial-gradient(circle at center,rgba(199,123,255,.26),rgba(0,224,255,.11) 34%,transparent 70%)}
.box>*{position:relative;z-index:1}
.box h2{font-size:clamp(34px,4.4vw,58px);max-width:690px}
.box-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px;margin-top:40px;align-items:start}
.box-grid>div>p{color:var(--body);font-size:15px;max-width:480px}
.office{margin-top:28px;padding-top:20px;border-top:1px solid var(--border-strong);color:var(--body);font-size:14.5px;line-height:1.8}
.office small{display:block;margin-bottom:6px;color:var(--label);font-size:11px;letter-spacing:.12em}
form{display:grid;gap:14px;min-width:0}
label{display:grid;gap:6px;color:var(--label);font-size:12.5px}
input,select,textarea{width:100%;padding:12px 14px;border:1px solid var(--border-strong);border-radius:8px;background:var(--surface);color:var(--content);font:15px var(--font)}
input:focus,select:focus,textarea:focus{outline:none;border-color:var(--primary)}
textarea{min-height:120px;resize:vertical}
label .req,label .opt{display:inline-block;margin-left:8px;padding:1px 7px;border-radius:4px;font-size:10.5px;font-weight:600;letter-spacing:.04em;vertical-align:1px}
label .req,label .opt{justify-self:start}
label .req{color:var(--ink);background:var(--primary)}
label .opt{color:var(--label);border:1px solid var(--border-strong)}
label:has(> .req, > .opt){grid-template-columns:auto 1fr;align-items:center}
label:has(> .req, > .opt)>input,label:has(> .req, > .opt)>select,label:has(> .req, > .opt)>textarea{grid-column:1/-1}
.two{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.agree{display:flex;align-items:center;gap:10px;color:var(--body);font-size:13.5px;cursor:pointer}
.agree input{width:18px;height:18px;margin:0;padding:0;accent-color:var(--primary);flex:none}
.agree a{color:var(--primary);text-decoration:underline;text-underline-offset:3px}
input:user-invalid,textarea:user-invalid{border-color:#ff6b8a}
form .cta{width:100%}
.ok{margin:0;color:var(--primary);font-size:13px}
@media (max-width:560px){.two{grid-template-columns:1fr}}

footer{border-top:1px solid var(--border);padding:64px 0 40px;background:var(--surface-raised)}
.foot-top{display:grid;grid-template-columns:1.4fr 1fr;gap:48px;padding-bottom:40px}
.foot-brand b{display:block;font-size:20px;font-weight:700;letter-spacing:-.045em}
.foot-brand small{display:block;margin-top:7px;color:var(--label);font-size:9px;letter-spacing:.12em}
.foot-brand address{margin-top:20px;font-style:normal;color:var(--body);font-size:13.5px;line-height:1.8}
.foot-nav{display:grid;grid-template-columns:1fr 1fr;grid-template-rows:repeat(3,auto);grid-auto-flow:column;gap:12px 24px;align-content:start;font-size:13.5px;color:var(--body)}
.foot-nav a:hover,.foot .top:hover{color:var(--primary)}
.foot{display:flex;align-items:center;justify-content:space-between;gap:16px;padding-top:24px;border-top:1px solid var(--border);color:var(--muted);font-size:11px;letter-spacing:.06em}

@media (max-width:960px){.cards{grid-template-columns:1fr}.card{min-height:auto}.box-grid{grid-template-columns:1fr;gap:32px}}
@media (max-width:820px){
  section.pad{padding:80px 0}
  .links>a:not(.cta){display:none}.links{gap:8px}.menu-btn{display:grid}.links .cta{font-size:11px;gap:8px;padding:0 14px}
  .toggle{width:36px;padding:0;justify-content:center}.toggle .copy{display:none}
  .hero-inner{grid-template-columns:1fr;min-height:auto;padding-block:72px 64px}
  .orbit{order:-1;width:230px;height:230px;justify-self:end;margin-bottom:-40px}
  .ring::before{inset:26px}.ring::after{left:36px;top:25px}
  .orb{left:61px;top:61px;width:108px;height:108px}.caption{display:none}
  .lead{font-size:16px}.actions{flex-direction:column;align-items:flex-start}
  .stat-grid{grid-template-columns:1fr}.stat{padding:22px 0;border-right:0;border-bottom:1px solid var(--border)}.stat:last-child{border-bottom:0}
  .intro-grid,.adv-grid,.process-grid{grid-template-columns:1fr;gap:40px}.intro-copy{font-size:17px}
  .head{flex-direction:column;align-items:flex-start;gap:24px}
  .adv::before{right:-60px}.caps{grid-template-columns:1fr}
  .step{grid-template-columns:56px 1fr;padding:12px 0}.step small{grid-column:2;margin-top:-6px}
  .contact{padding-bottom:80px}.box{padding:40px 20px}
  .foot-top{grid-template-columns:1fr;gap:32px}
}
@media (max-width:480px){.one-row{grid-template-columns:1fr}.vs{text-align:center;transform:rotate(90deg)}}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}

/* subpages */
.page-hero{position:relative;overflow:hidden;background:linear-gradient(135deg,var(--surface) 0%,var(--surface-raised) 60%,var(--surface-deep) 100%);border-bottom:1px solid var(--border)}
.page-hero::before{content:"";position:absolute;inset:0;background-image:linear-gradient(var(--grid) 1px,transparent 1px),linear-gradient(90deg,var(--grid) 1px,transparent 1px);background-size:64px 64px}
.page-hero::after{content:"";position:absolute;inset:0;background:radial-gradient(circle at 86% 20%,rgba(199,123,255,.20),transparent 24%),radial-gradient(circle at 70% 100%,rgba(0,224,255,.12),transparent 30%)}
.page-hero .shell{position:relative;z-index:1;padding-block:88px 72px}
.page-hero h1{font-size:clamp(36px,5vw,60px);font-weight:700;line-height:1.15;margin:20px 0 0}
.crumb{display:flex;gap:8px;margin-top:20px;color:var(--muted);font-size:12.5px}.crumb a:hover{color:var(--primary)}
.profile{display:grid;grid-template-columns:1fr 2.4fr;gap:80px;padding-block:96px}
.profile-side p{color:var(--body);font-size:15px;margin-top:20px}
.dl{margin:0;border-top:1px solid var(--border-strong)}
.dl>div{display:grid;grid-template-columns:180px 1fr;gap:24px;padding:24px 0;border-bottom:1px solid var(--border)}
.dl dt{color:var(--label);font-size:13px;font-weight:500;letter-spacing:.04em;padding-top:2px}
.dl dd{margin:0;font-size:16px;line-height:1.8}
.dl dd small{display:block;color:var(--muted);font-size:12.5px;margin-top:4px}
.dl dd a.map{display:inline-block;margin-top:6px;color:var(--primary);font-size:13px}
.biz{display:grid;gap:18px}
.biz h3{display:flex;align-items:center;gap:10px;font-size:15px;font-weight:600;margin:0 0 8px}
.biz h3 b{color:var(--c,var(--primary));font-size:11px;letter-spacing:.1em;font-weight:600}
.biz .tags{margin:0}
.biz>div:nth-child(1){--c:var(--primary);--soft:var(--soft-p)}.biz>div:nth-child(2){--c:var(--secondary);--soft:var(--soft-s)}.biz>div:nth-child(3){--c:var(--tertiary);--soft:var(--soft-t)}
.pills{display:flex;flex-wrap:wrap;gap:8px}
.pills span{padding:4px 12px;border:1px solid var(--border-strong);border-radius:9999px;font-size:13px;color:var(--body)}
.band{padding:0 0 128px}
.band .box{display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap}
.band .box h2{font-size:clamp(26px,3.2vw,40px);margin:16px 0 0}
.prose{max-width:884px;padding-block:96px 128px}
.prose h2{font-size:20px;font-weight:600;margin:48px 0 14px;padding-top:24px;border-top:1px solid var(--border)}
.prose h2:first-of-type{margin-top:0}
.prose p,.prose li{color:var(--body);font-size:15px;line-height:1.9}
.prose ul{padding-left:1.3em}
.prose .meta{color:var(--muted);font-size:13px;margin-top:48px}
.prose a{color:var(--primary);text-decoration:underline;text-underline-offset:3px}
@media (max-width:820px){.profile{grid-template-columns:1fr;gap:32px;padding-block:64px}.dl>div{grid-template-columns:1fr;gap:6px;padding:18px 0}.page-hero .shell{padding-block:64px 48px}.band{padding-bottom:80px}.prose{padding-block:64px 80px}}
.profile-side h2{font-size:clamp(24px,2.6vw,32px)}