:root{
  --ink:#F2F3F7;
  --ink-dim:#9DA1AE;
  --ink-faint:#5E6270;
  --bg:#101218;
  --bg-raise:#161923;
  --bg-card:#1B1F2B;
  --line:rgba(242,243,247,.09);
  --blue:#2E45FF;
  --blue-deep:#2233CC;
  --blue-glow:rgba(46,69,255,.35);
  --fill-0:rgba(46,69,255,0);   /* same hue at zero alpha — a clean drain target */
  --fill-in:.02s ease-out;
  --fill-out:1.6s cubic-bezier(.16,1,.3,1);
  --on-fill:#fff;
  --on-fill-dim:rgba(255,255,255,.86);
  --sans:'IBM Plex Sans',-apple-system,system-ui,sans-serif;
  --mono:'IBM Plex Mono',ui-monospace,monospace;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{background:var(--bg);color:var(--ink);font-family:var(--sans);font-size:16px;line-height:1.6;overflow-x:hidden}
::selection{background:var(--blue);color:#fff}
a{color:inherit;text-decoration:none}
.mono{font-family:var(--mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase}
.container{max-width:1280px;margin:0 auto;padding:0 clamp(20px,4vw,56px)}

/* ---------- NAV ---------- */
nav{position:fixed;top:0;left:0;right:0;z-index:100;display:flex;align-items:center;justify-content:space-between;padding:18px clamp(20px,4vw,56px);backdrop-filter:blur(14px);background:rgba(16,18,24,.72);border-bottom:1px solid transparent;transition:border-color .4s}
nav.scrolled{border-bottom-color:var(--line)}
.nav-logo img{height:26px;display:block}
.nav-route{color:var(--ink-faint)}
.nav-route b{color:var(--blue);font-weight:500}
.btn-pill{font-family:var(--mono);font-size:12px;letter-spacing:.08em;background:var(--blue);color:#fff;padding:10px 22px;border-radius:100px;transition:background .25s,transform .25s;display:inline-block}
.btn-pill:hover{background:var(--blue-deep);transform:translateY(-1px)}

/* ---------- HERO ---------- */
.hero{position:relative;min-height:100vh;display:flex;flex-direction:column;justify-content:center;overflow:hidden}
#rivers{position:absolute;inset:0;width:100%;height:100%}
.hero-inner{position:relative;z-index:2;padding-top:80px}
.kicker{color:var(--ink-faint);margin-bottom:28px}
.kicker em{color:var(--blue);font-style:normal}
h1.display{font-size:clamp(56px,10vw,148px);line-height:.98;font-weight:600;letter-spacing:-.03em}
h1.display .thin{font-weight:300;color:var(--ink-dim)}
.hero-sub{max-width:460px;margin-top:36px;color:var(--ink-dim);font-size:17px}
.hero-sub b{color:var(--ink);font-weight:500}
.scroll-cue{position:absolute;bottom:36px;left:clamp(20px,4vw,56px);z-index:2;color:var(--ink-faint);display:flex;align-items:center;gap:16px}
.scroll-cue::after{content:"";width:72px;height:1px;background:var(--line)}
.edge-text{position:absolute;z-index:2;font-family:var(--mono);font-size:10px;letter-spacing:.3em;text-transform:uppercase;color:var(--ink-faint);writing-mode:vertical-rl;top:50%;transform:translateY(-50%)}
.edge-text.left{left:14px;transform:translateY(-50%) rotate(180deg)}
.edge-text.right{right:14px}
@media(max-width:800px){.edge-text{display:none}}

/* ---------- SECTIONS ---------- */
section{padding:clamp(90px,12vh,160px) 0;position:relative}
.sec-head{display:flex;align-items:baseline;justify-content:space-between;border-bottom:1px solid var(--line);padding-bottom:18px;margin-bottom:clamp(40px,6vh,72px);gap:16px;flex-wrap:wrap}
.sec-index{color:var(--blue)}
.sec-name{color:var(--ink-dim)}
.sec-meta{color:var(--ink-faint)}
h2.title{font-size:clamp(34px,5vw,64px);line-height:1.08;font-weight:600;letter-spacing:-.02em;max-width:860px}
h2.title .dim{color:var(--ink-faint)}
.lede{color:var(--ink-dim);font-size:clamp(16px,1.4vw,19px);max-width:640px;margin-top:28px}

/* reveal */
.rv{opacity:0;transform:translateY(28px);transition:opacity .8s cubic-bezier(.2,.6,.2,1),transform .8s cubic-bezier(.2,.6,.2,1)}
.rv.in{opacity:1;transform:none}

/* ---------- ABOUT ---------- */
.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:clamp(32px,5vw,80px);margin-top:56px}
@media(max-width:860px){.about-grid{grid-template-columns:1fr}}
.about-grid p{color:var(--ink-dim)}
.about-grid p+p{margin-top:20px}
.about-grid p b{color:var(--ink);font-weight:500}
.conv-list{display:flex;flex-direction:column;border-top:1px solid var(--line)}
.conv-item{display:flex;align-items:center;justify-content:space-between;padding:20px 4px;border-bottom:1px solid var(--line);background-color:var(--fill-0)}
.conv-item .n{font-family:var(--mono);font-size:11px;color:var(--blue)}
.conv-item .t{font-size:20px;font-weight:500}
.conv-item .d{font-family:var(--mono);font-size:11px;color:var(--ink-faint);letter-spacing:.1em;text-transform:uppercase}
@media(max-width:640px){.conv-item .d{display:none}}

/* ---------- SERVICES tabs ---------- */
.svc-tabs{display:flex;flex-direction:column;border-top:1px solid var(--line)}
.svc-tab{display:grid;grid-template-columns:70px 1fr auto;align-items:center;gap:20px;padding:26px 4px;border-bottom:1px solid var(--line);cursor:pointer;background-color:var(--fill-0);transition:background-color .25s,padding .25s}
/* active is the persistent state (raised tile + inset + blue meta); the blue
   hover fill is transient and deliberately outranks it — see the hover layer */
.svc-tab.active{background-color:var(--bg-raise);padding-left:18px;padding-right:18px}
.svc-tab .num{font-family:var(--mono);font-size:12px;color:var(--ink-faint)}
.svc-tab.active .num{color:var(--blue)}
.svc-tab .name{font-size:clamp(19px,2.4vw,28px);font-weight:500;letter-spacing:-.01em}
.svc-tab .route{font-family:var(--mono);font-size:11px;letter-spacing:.1em;color:var(--ink-faint)}
.svc-tab.active .route{color:var(--blue)}
.svc-panel{background:var(--bg-card);border:1px solid var(--line);border-radius:14px;padding:clamp(28px,4vw,48px);margin-top:36px;position:relative;overflow:hidden}
.svc-panel::before{content:"";position:absolute;top:0;left:0;right:0;height:2px;background:linear-gradient(90deg,var(--blue),transparent 60%)}
.svc-panel .route-line{color:var(--blue);margin-bottom:22px}
.svc-panel .chips{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:26px}
.chip{font-family:var(--mono);font-size:11px;letter-spacing:.08em;padding:7px 14px;border:1px solid var(--line);border-radius:100px;color:var(--ink-dim)}
.svc-panel p{color:var(--ink-dim);max-width:560px;font-size:17px}

/* ---------- MVP / process ---------- */
.mvp-intro{color:var(--ink-dim);max-width:640px;font-size:17px;margin-top:26px}
.moves{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:14px;overflow:hidden;margin-top:60px}
@media(max-width:860px){.moves{grid-template-columns:1fr}}
.move{background:var(--bg-card);padding:clamp(26px,3vw,40px);position:relative}
.move .step{font-family:var(--mono);font-size:11px;color:var(--blue);letter-spacing:.14em;margin-bottom:44px;display:block}
.move h3{font-size:24px;font-weight:600;margin-bottom:12px}
.move p{color:var(--ink-dim);font-size:15px}
/* white, not blue — it now sits on top of a blue fill. Retracts on the fade
   curve so the underline drains with the tile instead of snapping back. */
.move::after{content:"";position:absolute;bottom:0;left:0;height:2px;width:0;background:rgba(255,255,255,.55);transition:width var(--fill-out)}

/* ---------- marquee ---------- */
.marquee{border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:26px 0;overflow:hidden;white-space:nowrap;background:var(--bg-raise)}
.marquee-track{display:inline-block;animation:mq 28s linear infinite}
.marquee span{font-size:clamp(22px,3vw,36px);font-weight:600;letter-spacing:.02em;margin:0 8px}
.marquee .sep{color:var(--blue)}
.marquee .ghost{color:transparent;-webkit-text-stroke:1px var(--ink-faint)}
@keyframes mq{from{transform:translateX(0)}to{transform:translateX(-50%)}}

/* ---------- industries ---------- */
.ind-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:14px;overflow:hidden}
@media(max-width:720px){.ind-grid{grid-template-columns:1fr}}
.ind{background:var(--bg-card);padding:clamp(26px,3vw,40px)}
.ind .tag{color:var(--ink-faint);display:block;margin-bottom:18px}
.ind h3{font-size:21px;font-weight:600;margin-bottom:8px}
.ind p{color:var(--ink-dim);font-size:15px}

/* ---------- approach ---------- */
.pact{display:grid;grid-template-columns:repeat(3,1fr);gap:clamp(24px,3vw,48px)}
@media(max-width:860px){.pact{grid-template-columns:1fr}}
.pact-item{border-top:2px solid var(--line);padding-top:26px;transition:border-color var(--fill-out)}
.pact-item .q{font-family:var(--mono);font-size:11px;color:var(--blue);letter-spacing:.14em;text-transform:uppercase;display:block;margin-bottom:18px}
.pact-item h3{font-size:22px;font-weight:600;margin-bottom:12px}
.pact-item p{color:var(--ink-dim);font-size:15px}
.quote{margin-top:clamp(70px,10vh,120px);text-align:center}
.quote blockquote{font-size:clamp(26px,4vw,48px);font-weight:300;line-height:1.25;letter-spacing:-.01em;max-width:900px;margin:0 auto}
.quote blockquote b{font-weight:600;color:var(--blue)}
.quote cite{display:block;margin-top:24px;font-style:normal}

/* ---------- contact ---------- */
.contact{background:var(--bg-raise);border-top:1px solid var(--line)}
.contact h2.title{font-size:clamp(44px,8vw,110px)}
.mailto{display:inline-flex;align-items:center;gap:18px;margin-top:48px;font-size:clamp(20px,3vw,34px);font-weight:500;border-bottom:2px solid var(--line);padding-bottom:10px;transition:border-color .3s,color .3s}
.mailto:hover{border-color:var(--blue);color:var(--blue)}
.mailto .arrow{transition:transform .3s}
.mailto:hover .arrow{transform:translateX(8px)}
.prompt{color:var(--ink-faint);margin-top:56px}
.prompt .caret{display:inline-block;width:9px;height:16px;background:var(--blue);vertical-align:middle;animation:blink 1.1s steps(1) infinite;margin-left:6px}
@keyframes blink{50%{opacity:0}}

footer{border-top:1px solid var(--line);padding:28px 0;background:var(--bg-raise)}
.foot{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;color:var(--ink-faint)}

/* ---------- hover layer: instant fill, slow dissolve ---------- */
/* One mechanic for every hoverable surface. The fill lands in 20ms on contact
   and takes 1.6s to drain, so sweeping across a group leaves a trail of cooling
   tiles behind the cursor. Tune both ends with --fill-in / --fill-out.
   Two constraints, both load-bearing:
   1. This block must stay LAST in the file. .svc-tab:hover and .svc-tab.active
      have equal specificity, and the transient fill has to win the tie.
   2. The :hover rules are gated on a real pointer. On touch, :hover latches
      after a tap and the fill would never clear. */

.conv-item,.move,.ind{transition:background-color var(--fill-out)}
.conv-item .n,.conv-item .t,.conv-item .d,
.svc-tab .num,.svc-tab .name,.svc-tab .route,
.move .step,.move h3,.move p,
.ind .tag,.ind h3,.ind p{transition:color var(--fill-out)}

@media(hover:hover) and (pointer:fine){
  .svc-tab{transition:background-color var(--fill-out),padding .25s}
  .conv-item:hover,.svc-tab:hover,.move:hover,.ind:hover{background-color:var(--blue);transition:background-color var(--fill-in)}

  /* every child re-colours on the same asymmetry, or the text snaps back to
     --blue / --ink-faint while the tile is still blue and unreadable */
  .conv-item:hover .n,.conv-item:hover .t,
  .svc-tab:hover .num,.svc-tab:hover .name,.svc-tab:hover .route,
  .move:hover .step,.move:hover h3,
  .ind:hover .tag,.ind:hover h3{color:var(--on-fill);transition:color var(--fill-in)}
  .conv-item:hover .d,.move:hover p,.ind:hover p{color:var(--on-fill-dim);transition:color var(--fill-in)}

  .move:hover::after{width:100%;transition:width var(--fill-in)}
  /* the pact has no tile to fill, so it borrows the timing on its rule alone */
  .pact-item:hover{border-top-color:var(--blue);transition:border-color var(--fill-in)}
}

@media(prefers-reduced-motion:reduce){
  :root{--fill-in:.15s ease;--fill-out:.25s ease}
}