/* ============================================================
   LightRoads Inc. — 下層ページ共通スタイル (2026-08)
   トップページ index.html のデザイントークンを共有しています。
   ============================================================ */

:root{
  --ink:#15151A;
  --ink-2:#3A3A44;
  --paper:#FFFFFF;
  --paper-2:#F7F7F8;
  --paper-3:#F1F1F3;
  --line:#E5E5EA;
  --line-2:#D8D8DE;
  --muted:#6B6B76;
  --muted-2:#8E8E99;
  --accent:#2947FF;
  --accent-ink:#1C34C9;
  --accent-soft:#EEF1FF;

  --sans:"Schibsted Grotesk","Zen Kaku Gothic New",-apple-system,BlinkMacSystemFont,"Hiragino Kaku Gothic ProN","Hiragino Sans","Yu Gothic Medium","Yu Gothic",Meiryo,sans-serif;

  --gut:clamp(20px,4vw,40px);
  --maxw:1180px;
  --ease:cubic-bezier(.16,1,.3,1);
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;background:var(--paper);color:var(--ink);
  font-family:var(--sans);font-size:15px;line-height:1.95;
  font-feature-settings:"palt" 1;
  -webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit;cursor:pointer}
h1,h2,h3,h4,h5{margin:0;font-weight:700;letter-spacing:-.02em;line-height:1.35}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
::selection{background:var(--ink);color:#fff}

.wrap{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 var(--gut)}
.wrap-wide{width:100%;max-width:1400px;margin:0 auto;padding:0 var(--gut)}

.prog{position:fixed;top:0;left:0;right:0;height:2px;background:var(--accent);z-index:210;transform:scaleX(0);transform-origin:left center;will-change:transform}

/* ---------- buttons ---------- */
.btn{
  position:relative;display:inline-flex;align-items:center;gap:14px;
  padding:15px 26px;border:1px solid transparent;border-radius:2px;
  font-size:13.5px;font-weight:700;letter-spacing:.01em;line-height:1;
  overflow:hidden;transition:color .45s var(--ease),border-color .45s var(--ease),background .45s var(--ease);
}
.btn .lbl,.btn .ar{position:relative;z-index:2;display:inline-flex;align-items:center}
.btn .ar svg{width:15px;height:9px;transition:transform .5s var(--ease)}
.btn:hover .ar svg{transform:translateX(5px)}
.btn::after{content:"";position:absolute;inset:0;transform:translateY(101%);transition:transform .55s var(--ease);z-index:1}
.btn:hover::after{transform:translateY(0)}
.btn--solid{background:var(--ink);color:#fff}
.btn--solid::after{background:var(--accent)}
.btn--ghost{border-color:var(--line-2);color:var(--ink);background:transparent}
.btn--ghost::after{background:var(--ink)}
.btn--ghost:hover{color:#fff;border-color:var(--ink)}
.btn--sm{padding:12px 20px;font-size:12.5px;gap:10px}

/* ---------- header ---------- */
.hdr{
  position:fixed;top:0;left:0;right:0;z-index:200;
  transition:transform .55s var(--ease),background .45s var(--ease),border-color .45s var(--ease);
  border-bottom:1px solid transparent;
}
.hdr-in{display:flex;align-items:center;justify-content:space-between;gap:24px;height:74px;transition:height .4s var(--ease)}
.hdr.is-stuck{background:rgba(255,255,255,.86);backdrop-filter:saturate(160%) blur(14px);-webkit-backdrop-filter:saturate(160%) blur(14px);border-bottom-color:var(--line)}
.hdr.is-stuck .hdr-in{height:64px}
.hdr.is-hide{transform:translateY(-102%)}
body.menu-open .hdr.is-hide{transform:none}
.hdr-logo{display:flex;align-items:center;gap:12px;flex-shrink:0;position:relative}
.hdr-logo .lg{display:block;height:20px;width:auto}
.nav{display:flex;align-items:center;gap:clamp(18px,2.4vw,34px)}
.nav a{position:relative;font-size:12px;font-weight:700;letter-spacing:.11em;padding:6px 0;color:var(--ink-2);transition:color .35s var(--ease)}
.nav a .u{position:absolute;left:0;bottom:0;height:1px;width:100%;background:currentColor;transform:scaleX(0);transform-origin:right;transition:transform .5s var(--ease)}
.nav a:hover{color:var(--ink)}
.nav a:hover .u{transform:scaleX(1);transform-origin:left}
.hdr-cta{flex-shrink:0}
.burger{display:none;position:relative;width:44px;height:44px;border:1px solid var(--line-2);background:rgba(255,255,255,.7);border-radius:50%;flex:none}
.burger span{position:absolute;left:11px;width:22px;height:1.5px;background:var(--ink);transition:transform .5s var(--ease),opacity .3s var(--ease)}
.burger span:nth-child(1){top:19px}
.burger span:nth-child(2){top:25px}
body.menu-open .burger span:nth-child(1){transform:translateY(3px) rotate(45deg)}
body.menu-open .burger span:nth-child(2){transform:translateY(-3px) rotate(-45deg)}

/* ---------- mobile nav ---------- */
.mobnav{
  position:fixed;inset:0;z-index:190;background:var(--paper);
  clip-path:inset(0 0 100% 0);transition:clip-path .8s var(--ease);
  display:flex;flex-direction:column;justify-content:center;padding:0 var(--gut);
  pointer-events:none;
}
body.menu-open .mobnav{clip-path:inset(0 0 0 0);pointer-events:auto}
.mobnav ol{max-width:var(--maxw);width:100%;margin:0 auto}
.mobnav li{overflow:hidden;border-bottom:1px solid var(--line)}
.mobnav a{
  display:flex;align-items:baseline;gap:16px;padding:20px 0;
  font-size:clamp(24px,7vw,34px);font-weight:700;letter-spacing:-.02em;
  transform:translateY(110%);transition:transform .8s var(--ease);
}
.mobnav a small{font-size:11px;font-weight:700;letter-spacing:.12em;color:var(--muted-2)}
body.menu-open .mobnav a{transform:translateY(0)}
body.menu-open .mobnav li:nth-child(1) a{transition-delay:.10s}
body.menu-open .mobnav li:nth-child(2) a{transition-delay:.16s}
body.menu-open .mobnav li:nth-child(3) a{transition-delay:.22s}
body.menu-open .mobnav li:nth-child(4) a{transition-delay:.28s}
body.menu-open .mobnav li:nth-child(5) a{transition-delay:.34s}
.mobnav .foot{margin-top:36px;font-size:11.5px;color:var(--muted-2);letter-spacing:.02em;opacity:0;transition:opacity .6s var(--ease) .5s;text-align:center}
body.menu-open .mobnav .foot{opacity:1}

/* ---------- page head ---------- */
.phead{padding:clamp(122px,13vw,168px) 0 clamp(38px,4.6vw,60px);background:var(--paper-2);border-bottom:1px solid var(--line)}
.phead__bc{display:flex;align-items:center;gap:10px;font-size:11px;font-weight:700;letter-spacing:.12em;color:var(--muted-2);margin-bottom:20px}
.phead__bc a{transition:color .35s var(--ease)}
.phead__bc a:hover{color:var(--accent)}
.phead__bc span{color:var(--line-2)}
.phead__k{display:inline-flex;align-items:center;gap:10px;font-size:11px;font-weight:700;letter-spacing:.18em;color:var(--accent);margin-bottom:16px}
.phead__k::before{content:"";width:26px;height:1px;background:var(--accent)}
.phead h1{font-size:clamp(24px,3.6vw,40px);line-height:1.4;letter-spacing:-.03em}
.phead__lead{margin-top:20px;font-size:14px;color:var(--muted);line-height:2.1;max-width:720px}

/* ---------- document body ---------- */
.doc{padding:clamp(48px,6vw,80px) 0 clamp(72px,9vw,120px)}
.doc__in{max-width:840px}
.doc__intro{font-size:14.5px;color:var(--ink-2);line-height:2.2}
.doc h2{
  font-size:clamp(17px,2vw,21px);line-height:1.6;letter-spacing:-.025em;
  margin:clamp(44px,5vw,64px) 0 18px;padding-top:clamp(30px,3.4vw,42px);
  border-top:1px solid var(--line);
}
.doc h2:first-of-type{margin-top:clamp(38px,4.2vw,52px)}
.doc h3{font-size:15.5px;line-height:1.7;letter-spacing:-.02em;margin:32px 0 14px;color:var(--ink)}
.doc h4{font-size:14px;line-height:1.8;margin:26px 0 10px;color:var(--ink)}
.doc p{font-size:14px;color:var(--ink-2);line-height:2.2}
.doc p+p{margin-top:16px}
.doc ol.num>li,.doc ul.dot>li{font-size:14px;color:var(--ink-2);line-height:2.2;margin-top:12px;padding-left:1.15em;text-indent:-1.15em}
.doc ul.plain>li{font-size:14px;color:var(--ink-2);line-height:2.2;margin-top:8px}
.doc .sub{margin-top:14px;padding-left:1.2em;border-left:2px solid var(--line);}
.doc .sub li{font-size:13.5px;color:var(--muted);line-height:2.1;margin-top:6px}
.doc a.ex{color:var(--accent);border-bottom:1px solid rgba(41,71,255,.35);padding-bottom:1px;word-break:break-all}
.doc a.ex:hover{border-color:var(--accent)}
.doc .box{
  margin-top:22px;background:var(--paper-2);border:1px solid var(--line);border-radius:12px;
  padding:clamp(22px,2.6vw,30px);
}
.doc .box p{font-size:13.5px;line-height:2.1}
.doc .box .ttl{font-size:13px;font-weight:700;letter-spacing:.02em;color:var(--ink);margin-bottom:10px}
.doc .date{margin-top:clamp(44px,5vw,64px);padding-top:26px;border-top:1px solid var(--line);font-size:12.5px;color:var(--muted-2);letter-spacing:.04em}

/* ---------- back link ---------- */
.backline{padding:0 0 clamp(64px,8vw,104px)}
.backlink{
  display:inline-flex;align-items:center;gap:12px;font-size:13px;font-weight:700;letter-spacing:.02em;
  border-bottom:1px solid var(--line-2);padding-bottom:4px;transition:color .4s var(--ease),border-color .4s var(--ease);
}
.backlink:hover{color:var(--accent);border-color:var(--accent)}
.backlink svg{width:15px;height:9px;transform:rotate(180deg)}

/* ---------- thanks / 404 ---------- */
.msg{min-height:78vh;display:flex;align-items:center;padding:140px 0 100px}
.msg__in{max-width:680px}
.msg__k{display:inline-flex;align-items:center;gap:10px;font-size:11px;font-weight:700;letter-spacing:.18em;color:var(--accent);margin-bottom:20px}
.msg__k::before{content:"";width:26px;height:1px;background:var(--accent)}
.msg h1{font-size:clamp(26px,4vw,42px);line-height:1.4;letter-spacing:-.035em}
.msg p{margin-top:24px;font-size:14.5px;color:var(--muted);line-height:2.15}
.msg__act{display:flex;flex-wrap:wrap;gap:14px;margin-top:38px}

/* ---------- footer ---------- */
.ftr{border-top:1px solid var(--line);background:var(--paper-2);padding:clamp(48px,5.5vw,74px) 0 30px}
.ftr__top{display:grid;grid-template-columns:minmax(0,1.5fr) repeat(2,minmax(0,1fr));gap:clamp(28px,4vw,56px);padding-bottom:clamp(34px,4vw,52px);border-bottom:1px solid var(--line)}
.ftr__logo img{height:24px;width:auto}
.ftr__adr{margin-top:18px;font-size:12px;color:var(--muted);line-height:2.05}
.ftr h5{font-size:10.5px;font-weight:700;letter-spacing:.18em;color:var(--muted-2);margin-bottom:16px}
.ftr ul li{margin-bottom:11px}
.ftr ul a{font-size:12.5px;color:var(--muted);transition:color .35s var(--ease)}
.ftr ul a:hover{color:var(--ink)}
.ftr__bot{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px;padding-top:24px}
.ftr__bot p{font-size:11px;color:var(--muted-2);letter-spacing:.04em}
.ftr__bot nav{display:flex;gap:22px}
.ftr__bot nav a{font-size:11px;color:var(--muted-2);transition:color .35s var(--ease)}
.ftr__bot nav a:hover{color:var(--ink)}

/* ---------- to top ---------- */
.totop{
  position:fixed;right:22px;bottom:22px;z-index:150;width:46px;height:46px;border-radius:50%;
  background:var(--ink);color:#fff;border:0;display:grid;place-items:center;
  opacity:0;transform:translateY(14px) scale(.9);pointer-events:none;
  transition:opacity .5s var(--ease),transform .5s var(--ease),background .4s var(--ease);
}
.totop.show{opacity:1;transform:none;pointer-events:auto}
.totop:hover{background:var(--accent)}
.totop svg{width:13px;height:13px}

/* ---------- cursor ---------- */
.cur{
  position:fixed;left:0;top:0;z-index:9999;pointer-events:none;
  width:30px;height:30px;margin:-15px 0 0 -15px;border-radius:50%;
  border:1px solid rgba(41,71,255,.55);
  opacity:0;transform:translate3d(-100px,-100px,0) scale(.6);
  transition:opacity .35s var(--ease),width .35s var(--ease),height .35s var(--ease),
             margin .35s var(--ease),background-color .35s var(--ease),border-color .35s var(--ease);
  will-change:transform;
}
.cur::after{
  content:"";position:absolute;left:50%;top:50%;width:4px;height:4px;margin:-2px 0 0 -2px;
  border-radius:50%;background:var(--accent);opacity:.9;
  transition:opacity .3s var(--ease),transform .3s var(--ease);
}
.cur.is-on{opacity:1}
.cur.is-hot{
  width:58px;height:58px;margin:-29px 0 0 -29px;
  background:rgba(41,71,255,.07);border-color:rgba(41,71,255,.42);
}
.cur.is-hot::after{opacity:0;transform:scale(.2)}
.cur.is-press{background:rgba(41,71,255,.16)}
@media (hover:none),(pointer:coarse){ .cur{display:none} }

/* ---------- reveal ---------- */
[data-rv]{opacity:0;transform:translateY(22px);transition:opacity .9s var(--ease),transform .9s var(--ease)}
[data-rv].rv-in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  [data-rv]{opacity:1;transform:none;transition:none}
  html{scroll-behavior:auto}
}

/* ---------- responsive ---------- */
@media (max-width:900px){
  .nav,.hdr-cta{display:none}
  .burger{display:block}
  .ftr__top{grid-template-columns:1fr 1fr}
  .ftr__logo{grid-column:1/-1}
}
@media (max-width:640px){
  body{line-height:1.85}
  .doc p,.doc ol.num>li,.doc ul.dot>li,.doc ul.plain>li{font-size:13.5px;line-height:2.1}
  .ftr__top{grid-template-columns:1fr}
  .msg{min-height:auto;padding:120px 0 80px}
}