/*! Veriquest — shared shell.
    Tokens, chrome (nav + footer), the canvas layers and the motion primitives
    that every page of veriquest.dev uses. Page-specific sections stay in the
    page itself; anything that appears twice belongs here, so the pages cannot
    drift apart.

    Motion is gated on (prefers-reduced-motion: no-preference) rather than a
    global duration override: clamping a `both`-filled reveal to ~0ms leaves it
    stuck on its opening frame, i.e. invisible. */

:root{
  --ground:#0A0F1A;
  --raise:#0D1424;
  --ink:#F4F7FC;
  --ink-mid:#AAB6C6;
  --ink-dim:#7E8DA1;
  --ink-faint:#62718A;
  --line:rgba(255,255,255,.10);
  --line-firm:rgba(255,255,255,.20);
  --teal:#22D3C4;
  --blue:#2E7BFF;
  --violet:#7A5CFF;
  --grad:linear-gradient(96deg,#22D3C4 0%,#2E7BFF 52%,#7A5CFF 100%);
  --pad:clamp(20px,5vw,72px);
  --shell:1240px;
  /* Each business unit re-points these; the shell reads them, never the hex. */
  --acc:#4D9BFF;
  --acc-line:rgba(46,123,255,.5);
  --acc-glow:rgba(46,123,255,.18);
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
html,body{margin:0;padding:0}
body{
  background:var(--ground);color:var(--ink);
  font-family:'Zen Kaku Gothic New',sans-serif;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
::selection{background:var(--blue);color:#fff}
:focus{outline:none}
:focus-visible{outline:2px solid var(--blue);outline-offset:3px;border-radius:3px}
.shell{max-width:var(--shell);margin:0 auto;width:100%}
/* Content sits above both canvas layers. */
main,footer,.nav{position:relative;z-index:2}

/* ── Backdrop canvases ─────────────────────────────────────────────── */
/* Plasma, drawn at ~18% scale and blown up by this blur — the upscale is the
   softness, so cost stays flat at any size. It sits BELOW .field: the sharp
   layer has to be on top or `screen` blending washes the wireframe away.
   Masked so light pools at the top and releases the content below. */
.aurora{
  position:fixed;inset:0;width:100%;height:100%;display:block;
  pointer-events:none;z-index:0;
  filter:blur(52px) saturate(1.35);opacity:.55;mix-blend-mode:screen;
  -webkit-mask-image:linear-gradient(to bottom,#000 0%,#000 34%,rgba(0,0,0,.35) 62%,transparent 88%);
  mask-image:linear-gradient(to bottom,#000 0%,#000 34%,rgba(0,0,0,.35) 62%,transparent 88%);
}
/* Particles, links and (on the hub) the filaments and world. */
.field{
  position:fixed;inset:0;width:100%;height:100%;display:block;
  pointer-events:none;z-index:1;mix-blend-mode:screen;
}
/* A soft light trailing the pointer. It never replaces the real cursor. */
.glow-cursor{
  position:fixed;left:0;top:0;width:280px;height:280px;border-radius:50%;
  pointer-events:none;z-index:0;opacity:0;
  transform:translate3d(calc(var(--cx,0px) - 140px),calc(var(--cy,0px) - 140px),0);
  background:radial-gradient(circle,rgba(80,150,255,.20) 0%,rgba(122,92,255,.09) 42%,transparent 68%);
  transition:opacity .4s,width .35s cubic-bezier(.2,.7,.2,1),height .35s cubic-bezier(.2,.7,.2,1);
  mix-blend-mode:screen;
}
.glow-cursor.on{opacity:1}
.glow-cursor.big{width:420px;height:420px;
  background:radial-gradient(circle,rgba(120,190,255,.26) 0%,rgba(122,92,255,.11) 42%,transparent 68%)}

/* Blueprint grid — the "設計" half of the tagline, stated literally. */
.grid-veil{
  position:absolute;inset:0;pointer-events:none;z-index:1;opacity:.11;
  background-image:
    linear-gradient(rgba(140,195,255,.6) 1px,transparent 1px),
    linear-gradient(90deg,rgba(140,195,255,.6) 1px,transparent 1px);
  background-size:64px 64px;
  -webkit-mask-image:radial-gradient(115% 85% at 72% 8%,#000 0%,transparent 72%);
  mask-image:radial-gradient(115% 85% at 72% 8%,#000 0%,transparent 72%);
}
/* A rake of light crossing every few seconds — same idiom as the footer flare
   on the Studio site, so the whole property shares one vocabulary. */
.scanner{position:absolute;inset:0;overflow:hidden;pointer-events:none;z-index:1}
.scanner::after{
  content:"";position:absolute;top:-30%;left:0;width:42%;height:160%;
  background:linear-gradient(100deg,
    transparent 0%,rgba(150,205,255,.09) 42%,rgba(255,255,255,.15) 54%,
    rgba(122,92,255,.07) 66%,transparent 100%);
  mix-blend-mode:screen;filter:blur(4px);
  transform:translate3d(-150%,0,0) rotate(7deg);
}

/* ── Nav ───────────────────────────────────────────────────────────── */
.nav{
  position:sticky;top:0;z-index:60;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:15px var(--pad);
  background:rgba(10,15,26,.62);
  backdrop-filter:blur(14px) saturate(1.3);
  -webkit-backdrop-filter:blur(14px) saturate(1.3);
  border-bottom:1px solid rgba(255,255,255,.08);
}
.brand{display:flex;align-items:center;gap:7px}
.brand svg{display:block;flex:none}
.wordmark{
  font-family:'Fraunces',serif;font-weight:600;font-size:21px;
  letter-spacing:-.012em;line-height:1;white-space:nowrap;
}
.wordmark span{
  background:var(--grad);-webkit-background-clip:text;background-clip:text;
  -webkit-text-fill-color:transparent;color:transparent;
}
.nav-units{display:flex;align-items:center;gap:clamp(14px,2.4vw,32px)}
.nav-units a{
  font-family:'IBM Plex Mono',monospace;font-size:13px;letter-spacing:.02em;
  color:var(--ink-mid);padding:4px 2px;position:relative;transition:color .2s;
}
.nav-units a::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:1px;
  background:var(--grad);transform:scaleX(0);transform-origin:left;
  transition:transform .28s cubic-bezier(.2,.7,.2,1);
}
.nav-units a:hover{color:var(--ink)}
.nav-units a:hover::after,.nav-units a[aria-current]::after{transform:scaleX(1)}
.nav-units a[aria-current]{color:var(--ink)}
.nav-right{display:flex;align-items:center;gap:14px}
.lang{
  font-family:'IBM Plex Mono',monospace;font-size:11.5px;letter-spacing:.1em;
  color:var(--ink-dim);border:1px solid var(--line);border-radius:100px;
  padding:5px 11px;transition:color .2s,border-color .2s;
}
.lang:hover{color:var(--ink);border-color:var(--line-firm)}
.cta{
  position:relative;overflow:hidden;
  font-weight:700;font-size:14px;color:#06090F;background:var(--grad);
  border-radius:100px;padding:9px 20px;white-space:nowrap;
  box-shadow:0 8px 26px rgba(46,123,255,.36);
  transition:filter .2s,transform .2s;
  transform:translate3d(var(--tx,0px),var(--ty,0px),0);
}
.cta::after{
  content:"";position:absolute;top:0;left:0;width:38%;height:100%;
  background:linear-gradient(100deg,transparent,rgba(255,255,255,.6),transparent);
  transform:translate3d(-170%,0,0);pointer-events:none;
}
.cta:hover{filter:brightness(1.12);
  transform:translate3d(var(--tx,0px),calc(var(--ty,0px) - 2px),0) scale(1.04)}

/* ── Shared type ───────────────────────────────────────────────────── */
.eyebrow{
  margin:0 0 clamp(12px,1.9vh,20px);
  font-family:'IBM Plex Mono',monospace;font-size:11.5px;font-weight:500;
  letter-spacing:.2em;text-transform:uppercase;color:var(--ink-dim);
  display:flex;align-items:center;gap:13px;
}
.eyebrow::after{content:"";width:clamp(40px,7vw,90px);height:1px;background:var(--grad);opacity:.7}
.ln{display:block;overflow:hidden;padding-bottom:.06em}
.ln i{display:block;font-style:normal;will-change:transform}

/* Section header used by every unit page. The index is real information —
   these pages are read in order — so it earns its place. */
.sec{position:relative;padding:clamp(64px,8vw,124px) var(--pad)}
.sec-head{display:flex;align-items:baseline;gap:16px;margin-bottom:14px}
.sec-num{
  font-family:'IBM Plex Mono',monospace;font-size:clamp(26px,3.6vw,40px);
  font-weight:500;line-height:1;
  background:var(--grad);-webkit-background-clip:text;background-clip:text;
  -webkit-text-fill-color:transparent;color:transparent;
}
.sec-kicker{
  font-family:'IBM Plex Mono',monospace;font-size:12px;letter-spacing:.18em;
  text-transform:uppercase;color:var(--ink-dim);
}
.sec h2{
  margin:0 0 clamp(30px,4vw,54px);
  font-family:'Schibsted Grotesk','Zen Kaku Gothic New',sans-serif;
  font-weight:800;font-size:clamp(28px,4.6vw,58px);line-height:1.08;
  letter-spacing:-.028em;color:var(--ink);text-wrap:balance;
}
.sec-lede{margin:-18px 0 clamp(30px,4vw,52px);max-width:44em;
  font-size:clamp(14px,1.45vw,16.5px);line-height:1.95;color:var(--ink-mid)}

/* ── Footer ────────────────────────────────────────────────────────── */
footer{
  overflow:hidden;background:#06090F;color:var(--ink-dim);
  padding:clamp(44px,5.5vw,68px) var(--pad) clamp(28px,3.4vw,40px);
  border-top:1px solid rgba(255,255,255,.07);
}
.foot-top{
  display:flex;flex-wrap:wrap;gap:26px 40px;justify-content:space-between;
  align-items:flex-start;margin-bottom:clamp(30px,4vw,46px);
}
.foot-links{display:flex;flex-wrap:wrap;gap:12px 26px}
.foot-links a{font-family:'IBM Plex Mono',monospace;font-size:12.5px;color:var(--ink-dim);transition:color .2s}
.foot-links a:hover{color:var(--ink)}
.foot-note{max-width:30em;font-size:13px;line-height:1.85;color:var(--ink-faint);margin:0}
.foot-note a{color:var(--ink-dim);border-bottom:1px solid rgba(255,255,255,.2)}
.foot-note a:hover{color:var(--ink)}
/* The name once more at scale — typographic, so it costs no request. */
.foot-mark{
  font-family:'Fraunces',serif;font-weight:600;
  font-size:clamp(58px,16.5vw,236px);line-height:.82;letter-spacing:-.035em;
  background:linear-gradient(180deg,rgba(46,123,255,.26),rgba(122,92,255,.05));
  -webkit-background-clip:text;background-clip:text;
  -webkit-text-fill-color:transparent;color:transparent;
  white-space:nowrap;margin-bottom:10px;user-select:none;
}
.foot-base{
  padding-top:20px;border-top:1px solid rgba(255,255,255,.08);
  display:flex;flex-wrap:wrap;gap:10px 20px;justify-content:space-between;align-items:center;
  font-family:'IBM Plex Mono',monospace;font-size:11.5px;letter-spacing:.04em;color:var(--ink-faint);
}

@media (max-width:620px){
  .nav-units{display:none}
  .foot-top{flex-direction:column}
}

/* ── Motion ────────────────────────────────────────────────────────── */
@media (prefers-reduced-motion: no-preference){
  .nav{animation:vq-rise .6s cubic-bezier(.16,.8,.26,1) both}
  .ln i{animation:vq-line 1.05s cubic-bezier(.16,.85,.24,1) both}
  .scanner::after{animation:vq-scan 8.5s cubic-bezier(.5,0,.35,1) 2.2s infinite}
  .cta::after{animation:vq-sheen 6.5s ease-in-out 3s infinite}
  /* Scroll-revealed blocks. `backwards`, never `both`: a filled animation
     outranks normal declarations, which would permanently override :hover. */
  [data-reveal]{animation:vq-rise .82s cubic-bezier(.16,.8,.26,1) backwards}
}
@keyframes vq-rise{from{opacity:0;transform:translate3d(0,20px,0)}to{opacity:1;transform:none}}
@keyframes vq-line{from{transform:translate3d(0,108%,0)}to{transform:translate3d(0,0,0)}}
@keyframes vq-hue{from{background-position:0% 50%}to{background-position:100% 50%}}
@keyframes vq-sweep{0%{background-position:100% 50%}55%{background-position:0% 50%}100%{background-position:0% 50%}}
@keyframes vq-halo{from{opacity:.72;transform:scale(.97)}to{opacity:1;transform:scale(1.04)}}
@keyframes vq-spin{to{transform:rotate(1turn)}}
@keyframes vq-scan{
  0%{transform:translate3d(-150%,0,0) rotate(7deg)}
  22%{transform:translate3d(290%,0,0) rotate(7deg)}
  100%{transform:translate3d(290%,0,0) rotate(7deg)}
}
@keyframes vq-sheen{
  0%{transform:translate3d(-170%,0,0)}
  16%{transform:translate3d(240%,0,0)}
  100%{transform:translate3d(240%,0,0)}
}

/* ── Contact form feedback (assets/js/vq-form.js) ──────────────────── */
/* Injected after submit, so it has to look native to four different pages;
   it borrows --acc and stays inside the form's own measure. */
.vq-form-msg{
  margin:16px 0 0;padding:13px 16px;border-radius:10px;
  font-size:13.5px;line-height:1.8;border:1px solid var(--line);
  background:rgba(255,255,255,.04);color:var(--ink-mid);
}
.vq-form-msg[data-state="ok"]{border-color:var(--acc-line);color:var(--ink);
  background:color-mix(in srgb,var(--acc) 12%,transparent)}
.vq-form-msg[data-state="error"]{border-color:rgba(224,72,63,.55);color:#FFC9C5;
  background:rgba(224,72,63,.10)}
.vq-form-msg[data-state="busy"]{color:var(--ink-dim)}
[data-invalid]{border-color:rgba(224,72,63,.75)!important;background:rgba(224,72,63,.08)!important}
.vq-noscript{
  margin:16px 0 0;padding:13px 16px;border-radius:10px;
  border:1px dashed var(--line-firm);background:rgba(255,255,255,.03);
  font-size:13px;line-height:1.85;color:var(--ink-mid);
}