/* X PLATFORM株式会社 — xplatform.biz | design system shared with xplatformglobal.biz */
:root{
  --navy:#1a2b3c; --navy-deep:#12202e; --gold:#c9a520; --gold-soft:#d4b54a;
  --paper:#faf9f6; --ink:#22303e; --sub:#5c6a77; --rule:#e3e0d8;
  --serif-en:'Cormorant Garamond',Georgia,serif;
  --serif-jp:'Noto Serif JP',serif;
  --sans-en:'Montserrat',sans-serif;
  --sans-jp:'Noto Sans JP',sans-serif;
}
*{margin:0;padding:0;box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{font-family:var(--sans-jp),var(--sans-en),sans-serif;color:var(--ink);background:var(--paper);line-height:1.8;-webkit-font-smoothing:antialiased;}
.wrap{max-width:1040px;margin:0 auto;padding:0 28px;}
::selection{background:var(--gold);color:var(--navy);}
img{max-width:100%;}

.label{font-family:var(--sans-en);font-size:11px;font-weight:600;letter-spacing:.32em;text-transform:uppercase;color:var(--gold);}
.label--ink{color:var(--sub);}
.display-jp{font-family:var(--serif-jp);font-weight:300;line-height:1.5;letter-spacing:.06em;}
.display-en{font-family:var(--serif-en);font-weight:300;line-height:1.15;letter-spacing:.01em;}

/* reveal */
.rv{opacity:0;transform:translateY(22px);transition:opacity .9s cubic-bezier(.2,.6,.2,1),transform .9s cubic-bezier(.2,.6,.2,1);}
.rv.in{opacity:1;transform:none;}
@media (prefers-reduced-motion: reduce){.rv{opacity:1;transform:none;transition:none;}}

/* ===== header / nav ===== */
header.site{background:var(--navy);border-bottom:3px solid var(--gold);}
header.site .wrap{display:flex;justify-content:space-between;align-items:center;padding-top:22px;padding-bottom:22px;gap:16px;flex-wrap:wrap;}
.brandmark{font-family:var(--sans-en);font-weight:700;font-size:13px;letter-spacing:.34em;color:#fff;text-decoration:none;}
.brandmark .x{color:var(--gold);}
.brandmark .co{display:block;font-family:var(--sans-jp);font-weight:500;font-size:10px;letter-spacing:.2em;color:#9fb0c0;margin-top:4px;}
nav.main{display:flex;gap:22px;flex-wrap:wrap;}
nav.main a{font-family:var(--sans-jp);font-size:12.5px;font-weight:500;letter-spacing:.14em;color:#c7d2dd;text-decoration:none;transition:color .3s;padding:4px 0;}
nav.main a:hover{color:var(--gold-soft);}
nav.main a.on{color:#fff;border-bottom:1px solid var(--gold);}
nav.main a.lang{border:1px solid rgba(201,165,32,.55);padding:3px 11px;border-radius:2px;color:var(--gold-soft);font-family:var(--sans-en);letter-spacing:.18em;font-size:10.5px;font-weight:600;}
nav.main a.lang:hover{background:var(--gold);color:var(--navy);}
nav.main a.lang.on{border-bottom:1px solid rgba(201,165,32,.55);}
@media(max-width:720px){nav.main{gap:14px;}nav.main a{font-size:11.5px;}}

/* ===== page hero band ===== */
.pagehero{background:
  radial-gradient(1000px 500px at 88% -10%, #24384d 0%, transparent 60%),
  radial-gradient(800px 460px at -8% 110%, #16293a 0%, transparent 55%),
  var(--navy);color:#fff;position:relative;overflow:hidden;}
.pagehero::after{content:"";position:absolute;inset:0;pointer-events:none;opacity:.05;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='120' height='120' filter='url(%23n)' opacity='.6'/%3E%3C/svg%3E");}
.pagehero .wrap{position:relative;z-index:1;padding-top:72px;padding-bottom:64px;}
.pagehero .label{margin-bottom:20px;}
.pagehero h1{font-family:var(--serif-jp);font-weight:300;font-size:clamp(26px,4.6vw,40px);letter-spacing:.08em;line-height:1.5;}
.pagehero .en-sub{font-family:var(--serif-en);font-style:italic;font-size:clamp(15px,2.4vw,19px);color:var(--gold-soft);margin-top:14px;letter-spacing:.02em;}
/* home hero taller */
.pagehero.home .wrap{padding-top:110px;padding-bottom:96px;max-width:1040px;}
.pagehero.home h1{font-size:clamp(30px,5.6vw,50px);}
.hero-cities{display:flex;align-items:center;gap:18px;margin-top:48px;}
.hero-cities .city{font-family:var(--sans-en);font-size:12px;font-weight:600;letter-spacing:.3em;color:#e7edf3;}
.hero-cities .tie{width:56px;height:1px;background:var(--gold);position:relative;}
.hero-cities .tie::before,.hero-cities .tie::after{content:"";position:absolute;top:-2.5px;width:6px;height:6px;background:var(--gold);border-radius:50%;}
.hero-cities .tie::before{left:-3px;} .hero-cities .tie::after{right:-3px;}

/* ===== sections ===== */
main section{padding:88px 0;}
.sec-head{display:grid;grid-template-columns:190px 1fr;gap:32px;margin-bottom:52px;}
.sec-head .rule{height:1px;background:var(--gold);width:44px;margin-top:10px;}
.sec-head h2{font-family:var(--serif-jp);font-weight:400;font-size:clamp(22px,3.2vw,30px);color:var(--navy);line-height:1.5;letter-spacing:.06em;}
.sec-head .h2-en{font-family:var(--serif-en);font-style:italic;display:block;font-size:15px;color:var(--sub);margin-top:10px;letter-spacing:.02em;}
@media(max-width:720px){.sec-head{grid-template-columns:1fr;gap:12px;}}

.prose p{font-size:15px;color:var(--ink);line-height:2.1;margin-bottom:20px;max-width:760px;}
.prose p.en{font-family:var(--sans-en);font-size:13px;color:#66727e;line-height:1.85;}
.prose b{color:var(--navy);font-weight:700;}

/* pillars (home) */
.fields{display:grid;grid-template-columns:repeat(3,1fr);border-top:1px solid var(--rule);}
.field{padding:40px 30px 46px;border-bottom:1px solid var(--rule);position:relative;transition:background .4s;}
.field + .field{border-left:1px solid var(--rule);}
.field:hover{background:#fff;}
.field .num{font-family:var(--serif-en);font-style:italic;font-size:15px;color:var(--gold);}
.field h3{font-family:var(--sans-jp);font-size:15.5px;font-weight:700;letter-spacing:.14em;color:var(--navy);margin:14px 0 4px;}
.field .h3-en{font-family:var(--sans-en);font-size:10.5px;font-weight:600;letter-spacing:.22em;text-transform:uppercase;color:var(--sub);margin-bottom:16px;}
.field p{font-size:13.5px;color:var(--sub);line-height:2;}
.field::after{content:"";position:absolute;left:30px;bottom:0;height:2px;width:0;background:var(--gold);transition:width .5s cubic-bezier(.2,.6,.2,1);}
.field:hover::after{width:52px;}
@media(max-width:840px){.fields{grid-template-columns:1fr;}.field + .field{border-left:none;}}

/* ===== services: scope matrix ===== */
.matrix{width:100%;border-collapse:collapse;background:#fff;border:1px solid var(--rule);}
.matrix th,.matrix td{padding:15px 14px;font-size:13.5px;border-bottom:1px solid var(--rule);text-align:center;}
.matrix thead th{font-family:var(--sans-jp);font-weight:700;color:#fff;background:var(--navy);letter-spacing:.08em;font-size:12.5px;}
.matrix thead th:first-child{text-align:left;}
.matrix thead th.xp{color:var(--gold-soft);}
.matrix td:first-child{text-align:left;font-weight:500;color:var(--navy);white-space:nowrap;}
.matrix tr:hover td{background:var(--paper);}
.dot{display:inline-block;width:13px;height:13px;border-radius:50%;background:var(--gold);}
.dot.partner{background:transparent;border:2px solid var(--gold);}
.dot.grey{background:transparent;border:2px solid #b9c2cb;}
.legend{display:flex;gap:26px;margin-top:14px;font-size:12px;color:var(--sub);flex-wrap:wrap;}
.legend span{display:flex;align-items:center;gap:8px;}
.matrix-scroll{overflow-x:auto;}
.matrix-scroll .matrix{min-width:640px;}

/* ===== services: engagement structure ===== */
.engage{display:grid;grid-template-columns:auto auto auto 1fr;gap:0 20px;align-items:center;background:#fff;border:1px solid var(--rule);padding:38px 32px;}
.e-client{border:1.5px solid var(--navy);padding:30px 24px;text-align:center;font-weight:700;color:var(--navy);font-size:15px;letter-spacing:.1em;min-width:110px;}
.e-client span{display:block;font-family:var(--sans-en);font-weight:600;font-size:9.5px;letter-spacing:.22em;color:var(--sub);margin-top:7px;text-transform:uppercase;}
.e-arrow{color:var(--gold);font-size:24px;font-weight:700;font-family:var(--sans-en);}
.e-xp{background:var(--navy);color:#fff;padding:32px 26px;text-align:center;border-bottom:3px solid var(--gold);min-width:190px;}
.e-xp .e-brand{font-family:var(--sans-en);font-weight:700;letter-spacing:.24em;font-size:13px;}
.e-xp .e-brand .x{color:var(--gold);}
.e-xp .e-role{font-family:var(--sans-en);font-size:10.5px;color:#c7d2dd;margin-top:9px;letter-spacing:.14em;line-height:1.7;}
.e-funcs{display:grid;gap:9px;padding-left:24px;border-left:1px solid var(--gold);max-width:340px;}
.e-f{position:relative;background:var(--navy);color:#fff;font-size:12.5px;font-weight:500;letter-spacing:.1em;text-align:center;padding:9px 12px;border-radius:2px;}
.e-f::before{content:"";position:absolute;left:-24px;top:50%;width:24px;height:1px;background:var(--gold);}
.e-f.partner{background:#fff;color:var(--navy);border:1px solid var(--gold);}
.engage-note{font-size:11.5px;color:var(--sub);margin-top:14px;}
@media(max-width:760px){
  .engage{grid-template-columns:1fr;gap:16px;justify-items:center;padding:26px 18px;}
  .e-arrow{transform:rotate(90deg);}
  .e-funcs{padding-left:0;border-left:none;padding-top:18px;border-top:1px solid var(--gold);width:100%;max-width:300px;}
  .e-f::before{display:none;}
}

/* ===== services: phase schedule ===== */
.gantt{background:#fff;border:1px solid var(--rule);padding:34px 30px 38px;}
.gantt .phases{display:grid;grid-template-columns:repeat(4,1fr);gap:6px;margin-bottom:26px;}
.gantt .phase{position:relative;background:var(--navy);color:#fff;font-size:12.5px;font-weight:700;letter-spacing:.12em;text-align:center;padding:9px 4px;clip-path:polygon(0 0, calc(100% - 12px) 0, 100% 50%, calc(100% - 12px) 100%, 0 100%, 12px 50%);}
.gantt .phase:first-child{clip-path:polygon(0 0, calc(100% - 12px) 0, 100% 50%, calc(100% - 12px) 100%, 0 100%);}
.gantt .phase .p-en{display:block;font-family:var(--sans-en);font-size:8.5px;font-weight:600;letter-spacing:.22em;color:#9fb0c0;margin-top:1px;text-transform:uppercase;}
.gantt .rows{display:grid;gap:9px;}
.gantt .bar{grid-column:1/-1;display:grid;grid-template-columns:repeat(8,1fr);}
.gantt .bar span{font-size:12.5px;font-weight:500;color:#fff;background:var(--navy);text-align:center;padding:8px 6px;border-radius:2px;border-left:3px solid var(--gold);letter-spacing:.08em;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.gantt .note{font-size:11.5px;color:var(--sub);margin-top:18px;}
@media(max-width:640px){.gantt{padding:22px 14px;} .gantt .bar span{font-size:10.5px;letter-spacing:.02em;} .gantt .phase{font-size:10.5px;letter-spacing:.04em;}}

/* ===== members ===== */
.person{display:grid;grid-template-columns:190px 1fr;gap:32px;align-items:start;padding:44px 0;border-top:1px solid var(--rule);}
.person:last-of-type{border-bottom:1px solid var(--rule);}
@media(max-width:720px){.person{grid-template-columns:1fr;gap:16px;}}
.person .portrait{width:160px;position:relative;}
.person .portrait img{width:100%;height:auto;display:block;filter:saturate(.88) contrast(1.02);}
.person .portrait::after{content:"";position:absolute;left:0;bottom:-9px;width:40px;height:2px;background:var(--gold);}
.person .nm-jp{font-family:var(--serif-jp);font-size:26px;font-weight:400;color:var(--navy);letter-spacing:.14em;}
.person .nm-en{font-family:var(--sans-en);font-size:10.5px;font-weight:600;letter-spacing:.26em;text-transform:uppercase;color:var(--sub);margin-top:6px;}
.person .ttl{display:inline-block;font-family:var(--sans-jp);font-size:12px;font-weight:700;letter-spacing:.16em;color:var(--gold);margin:14px 0 18px;}
.person .bio p{font-size:14px;line-height:2.1;color:var(--ink);margin-bottom:12px;}
.person .bio b{color:var(--navy);}

/* ===== career / generic list ===== */
ul.clean{list-style:none;max-width:760px;}
ul.clean li{font-size:14.5px;color:var(--ink);padding:14px 0 14px 24px;position:relative;border-bottom:1px solid var(--rule);}
ul.clean li::before{content:"";position:absolute;left:2px;top:24px;width:7px;height:7px;background:var(--gold);border-radius:50%;}

/* ===== entities / contact ===== */
.entities{display:grid;grid-template-columns:1fr 1fr;gap:26px;}
@media(max-width:720px){.entities{grid-template-columns:1fr;}}
.entity{background:#fff;border:1px solid var(--rule);border-top:3px solid var(--gold);padding:32px 30px 28px;}
.entity.us-side{border-top-color:var(--navy);}
.entity .flag{font-family:var(--sans-en);font-size:10.5px;font-weight:700;letter-spacing:.26em;text-transform:uppercase;color:var(--sub);margin-bottom:14px;}
.entity h3{font-family:var(--sans-jp);font-size:16.5px;font-weight:700;color:var(--navy);letter-spacing:.04em;}
.entity dl{margin-top:16px;}
.entity dl div{display:grid;grid-template-columns:92px 1fr;gap:12px;padding:9px 0;border-top:1px solid var(--rule);font-size:13.5px;}
.entity dt{font-family:var(--sans-en);font-size:10.5px;font-weight:600;letter-spacing:.18em;text-transform:uppercase;color:var(--sub);padding-top:2px;}
.entity dd a{color:var(--navy);font-weight:500;text-decoration:none;border-bottom:1px solid var(--gold);}
.entity dd a:hover{color:var(--gold);}

/* ===== CTA band ===== */
.cta{background:var(--navy);color:#fff;border-top:3px solid var(--gold);position:relative;overflow:hidden;}
.cta::after{content:"";position:absolute;inset:0;pointer-events:none;opacity:.05;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='120' height='120' filter='url(%23n)' opacity='.6'/%3E%3C/svg%3E");}
.cta .wrap{position:relative;z-index:1;padding:78px 28px;}
.cta .big-jp{font-family:var(--serif-jp);font-weight:300;font-size:clamp(21px,3.4vw,30px);letter-spacing:.08em;line-height:1.6;}
.cta .big-en{font-family:var(--serif-en);font-style:italic;color:var(--gold-soft);font-size:clamp(15px,2.2vw,19px);margin-top:10px;}
.contact-rows{margin-top:44px;display:grid;max-width:640px;}
.contact-rows a,.contact-rows .row{display:grid;grid-template-columns:110px 1fr;gap:16px;align-items:baseline;padding:16px 2px;border-top:1px solid rgba(255,255,255,.14);text-decoration:none;transition:padding-left .35s;}
.contact-rows a:hover{padding-left:12px;}
.contact-rows .k{font-family:var(--sans-en);font-size:10.5px;font-weight:600;letter-spacing:.24em;text-transform:uppercase;color:#9fb0c0;}
.contact-rows .v{font-family:var(--sans-en);font-size:14.5px;color:#fff;letter-spacing:.02em;}
.contact-rows a .v{color:var(--gold-soft);}

footer{background:var(--navy-deep);color:#7e8b99;font-size:11.5px;}
footer .wrap{padding:24px 28px;display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;align-items:center;}
footer .fm{font-family:var(--sans-en);letter-spacing:.28em;font-weight:600;font-size:10.5px;}
footer .fm .x{color:var(--gold);}
footer nav{display:flex;gap:16px;flex-wrap:wrap;}
footer nav a{color:#7e8b99;text-decoration:none;font-size:11px;}
footer nav a:hover{color:var(--gold-soft);}