/* ============================================================
   Yigitcan Uk — Master Portfolio · design system
   Shared stylesheet (no duplicated CSS across pages)
   ============================================================ */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=Space+Grotesk:wght@400;500;600;700&family=JetBrains+Mono:wght@400;500;600;700&display=swap');

:root{
  /* Palette adopted from Family Budget OS — warm gradient, warm near-black */
  --ink:#070707; --ink2:#0d0d0c; --black:#050505; --screen:#040404;
  --paper:#f4f3ef;
  --p70:rgba(244,243,239,.70); --p50:rgba(244,243,239,.50); --p40:rgba(244,243,239,.52);
  --p30:rgba(244,243,239,.42); --p20:rgba(244,243,239,.20);
  --red:#ed462d; --red2:#ff8a3d; --gold:#f5d36f;
  --grad:linear-gradient(120deg,#ed462d 0%,#ff8a3d 48%,#f5d36f 100%);
  --red-glow:rgba(237,70,45,.38); --green:#22c55e; --blue:#2b4fff;
  --border:rgba(244,243,239,.12); --border-dim:rgba(244,243,239,.08);
  --sans:"Inter",system-ui,sans-serif; --display:"Space Grotesk",system-ui,sans-serif; --mono:"JetBrains Mono",monospace;
  --maxw:1180px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
@media(prefers-reduced-motion:reduce){.brand .sq,.pcard .cdot,.about-live{animation:none}}
body{background:var(--ink);color:var(--paper);font-family:var(--sans);line-height:1.6;-webkit-font-smoothing:antialiased;overflow-x:hidden}
h1,h2,h3,h4{font-family:var(--display);font-weight:700;line-height:.95;letter-spacing:-.03em}
a{color:inherit;text-decoration:none}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 28px}
.label{font-family:var(--mono);font-size:11px;font-weight:700;letter-spacing:.2em;text-transform:uppercase;color:var(--red)}
.muted{color:var(--p50)} .dim{color:var(--p70)}

/* buttons (chamfered) */
.btn{display:inline-flex;align-items:center;gap:9px;padding:14px 26px;font-family:var(--mono);font-weight:500;font-size:13px;letter-spacing:.04em;text-transform:uppercase;cursor:pointer;border:1px solid var(--border);background:transparent;color:var(--paper);clip-path:polygon(12px 0,100% 0,100% calc(100% - 12px),calc(100% - 12px) 100%,0 100%,0 12px);transition:background .18s,color .18s,border-color .18s}
.btn:hover{background:var(--paper);color:var(--ink);border-color:var(--paper)}
.btn-red{background:var(--red);color:var(--ink);border-color:var(--red);box-shadow:0 0 30px -6px var(--red-glow)}
.btn-red:hover{filter:brightness(1.08);background:var(--red);color:var(--ink)}
.cta-actions .btn-red,.cta-actions .btn-red:hover{color:#fff}
.btn-ink{background:var(--ink);color:var(--paper);border-color:var(--ink)}
.btn-ink:hover{background:#000;color:var(--paper)}

/* background fx */
.bgfx{position:fixed;inset:0;z-index:-1;overflow:hidden;background:var(--ink);pointer-events:none}
.bgfx__grid{position:absolute;left:-50%;right:-50%;bottom:-10%;height:90%;
  background-image:linear-gradient(var(--border) 1px,transparent 1px),linear-gradient(90deg,var(--border) 1px,transparent 1px);
  background-size:64px 64px;transform:perspective(620px) rotateX(62deg);transform-origin:bottom center;
  -webkit-mask-image:linear-gradient(to top,#000,transparent 75%);mask-image:linear-gradient(to top,#000,transparent 75%);opacity:.5}
.bgfx__blob{position:absolute;width:42vmax;height:42vmax;border-radius:50%;filter:blur(120px);opacity:.10;background:radial-gradient(circle,var(--red),transparent 65%);top:-14vmax;right:-8vmax;animation:drift1 28s ease-in-out infinite alternate}
@keyframes drift1{to{transform:translate(-6vmax,6vmax) scale(1.1)}}

/* nav */
nav{position:fixed;top:0;left:0;right:0;z-index:100;backdrop-filter:blur(12px);background:color-mix(in srgb,var(--ink) 72%,transparent);border-bottom:1px solid var(--border-dim)}
.nav-in{max-width:var(--maxw);margin:0 auto;padding:15px 28px;display:flex;align-items:center;gap:22px}
.brand{font-family:var(--mono);font-weight:700;font-size:14px;letter-spacing:.08em;display:flex;align-items:center;gap:9px;text-decoration:none;color:inherit;cursor:pointer}
.brand .sq{width:11px;height:11px;background:var(--red);box-shadow:0 0 12px var(--red-glow);animation:led 1.4s step-end infinite}
.nav-links{display:flex;align-items:center;gap:26px;margin-left:auto;font-family:var(--mono);font-size:12px;letter-spacing:.06em;text-transform:uppercase}
.nav-links a{color:var(--p50);transition:color .2s}
.nav-links a:hover{color:var(--paper)}
.nav-links a.nav-cta{padding:9px 16px;font-size:11px;background:var(--grad);color:#000;border-color:transparent;box-shadow:0 8px 24px -10px var(--red-glow);transition:transform .2s,box-shadow .2s,filter .2s}
.nav-links a.nav-cta:hover{background:var(--grad);color:#000;filter:brightness(1.08);transform:translateY(-2px);box-shadow:0 14px 32px -10px var(--red-glow)}
.nav-links a.nav-cv{padding:9px 14px;font-size:11px;color:var(--paper);border-color:var(--border)}
.nav-links a.nav-cv:hover{color:#000;background:var(--paper);border-color:var(--paper)}
@media(max-width:820px){.nav-links a:not(.nav-cta){display:none}}

/* sections */
section.block{padding:96px 0;position:relative}
.sec-head{max-width:740px;margin-bottom:46px}
.sec-head.center{margin-left:auto;margin-right:auto;text-align:center}
.sec-head h2{font-size:clamp(30px,4.6vw,52px);margin:14px 0 14px;line-height:.96}
.sec-head p{color:var(--p70);font-size:17px;line-height:1.55}

/* numbered grid (problem + capabilities) */
.ngrid{display:grid;gap:0;border-top:1px solid var(--border);border-left:1px solid var(--border)}
.ngrid.c2{grid-template-columns:repeat(2,1fr)}
.ngrid.c3{grid-template-columns:repeat(3,1fr)}
@media(max-width:820px){.ngrid.c2,.ngrid.c3{grid-template-columns:1fr}}
.ncell{padding:30px 28px;border-right:1px solid var(--border);border-bottom:1px solid var(--border);transition:background .01s}
.ncell:hover{background:rgba(237,70,45,.05)}
.ncell .top{display:flex;justify-content:space-between;align-items:baseline;margin-bottom:16px}
.ncell .tag{font-family:var(--mono);font-size:10.5px;letter-spacing:.16em;text-transform:uppercase;color:var(--red)}
.ncell .idx{font-family:var(--mono);font-size:11px;letter-spacing:.2em;color:var(--p20)}
.ncell h4{font-size:21px;margin-bottom:9px;line-height:1.06}
.ncell p{color:var(--p70);font-size:14px;line-height:1.55}


/* ===== SIGNATURE 2: BOUNDARIES (rig "Work offline" severed) ===== */
.boundary{display:grid;grid-template-columns:1fr 1fr;gap:0;border:1px solid var(--border);align-items:stretch}
@media(max-width:820px){.boundary{grid-template-columns:1fr}}
.bd-diagram{padding:40px 28px;border-right:1px solid var(--border);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:0;position:relative}
@media(max-width:820px){.bd-diagram{border-right:none;border-bottom:1px solid var(--border)}}
.bd-box{font-family:var(--mono);font-size:11px;letter-spacing:.08em;text-transform:uppercase;border:1px solid var(--border);padding:14px 22px;color:var(--p70);text-align:center;min-width:220px}
.bd-core{border-color:var(--green);color:var(--paper);transition:box-shadow .3s ease}
.bd-core.pulse{box-shadow:0 0 0 1px var(--green),0 0 26px rgba(34,197,94,.45)}
.bd-core .ok{color:var(--green)}
.bd-sev{display:flex;flex-direction:column;align-items:center;padding:15px 0;color:var(--red)}
.bd-sev .ln{width:2px;height:24px;background:linear-gradient(180deg,transparent,var(--red),transparent);background-size:100% 220%;opacity:.75;animation:bdFlow 1.5s linear infinite}
.bd-sev .tx{font-family:var(--mono);font-size:9px;letter-spacing:.2em;margin:3px 0}
.bd-copy{padding:40px 32px;display:flex;flex-direction:column;justify-content:center}
.bd-copy h3{font-size:clamp(26px,3.4vw,40px);margin-bottom:14px}
.bd-copy p{color:var(--p70);font-size:15px;max-width:42ch}

/* ===== SIGNATURE 3: INTERACTIVE STEPPER (rig "Purpose beats scale") ===== */
.stepper{display:grid;grid-template-columns:1fr 1fr;gap:0;border-top:1px solid var(--border)}
@media(max-width:900px){.stepper{grid-template-columns:1fr}}
.steps-col{border-right:1px solid var(--border)}
@media(max-width:900px){.steps-col{border-right:none}}
.stepi{display:grid;grid-template-columns:6px 1fr;gap:0;border-bottom:1px solid var(--border);cursor:pointer}
.stepi .bar{background:rgba(244,243,239,.07);position:relative;overflow:hidden}
.stepi .bar{width:5px}
.stepi .bar i{position:absolute;top:0;left:0;right:0;height:100%;transform:scaleY(0);transform-origin:top;background:var(--grad);box-shadow:0 0 12px var(--red-glow);transition:transform 6s linear}
.stepi .body{padding:26px 30px;transition:opacity .3s}
.stepi .num{font-family:var(--mono);font-size:12px;color:var(--red);letter-spacing:.1em;margin-bottom:8px}
.stepi h4{font-size:21px;margin-bottom:0;color:var(--p40);transition:color .3s}
.stepi.active h4{color:var(--paper)}
.stepi .txt{max-height:0;overflow:hidden;color:var(--p70);font-size:14.5px;transition:max-height .4s ease,margin .4s ease,opacity .3s;opacity:0}
.stepi.active .txt{max-height:160px;margin-top:10px;opacity:1}
/* mobile: stepper is stacked, so the active-step accordion would change steps-col height every
   auto-cycle and bounce the page. Show all step texts at a fixed height (no max-height transition)
   so the column height is stable; the active step is still highlighted by colour/opacity. */
@media(max-width:900px){.stepi .txt{max-height:160px;margin-top:10px;opacity:.82;transition:opacity .3s}}
.panel-col{padding:36px 32px;display:flex;align-items:center}
@media(max-width:900px){.panel-col{border-top:1px solid var(--border)}}

/* feature trio */
.trio{display:grid;grid-template-columns:repeat(3,1fr);border:1px solid var(--border)}
.trio>div{padding:34px 28px;border-right:1px solid var(--border)}
.trio>div:last-child{border-right:none}
.trio h4{font-size:20px;margin:12px 0 8px}.trio p{color:var(--p70);font-size:14px}
@media(max-width:760px){.trio{grid-template-columns:1fr}.trio>div{border-right:none;border-bottom:1px solid var(--border)}}

/* stat strip */
.strip{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid var(--border);border-bottom:1px solid var(--border)}
.strip>div{padding:28px;border-right:1px solid var(--border)}
.strip>div:last-child{border-right:none}
.strip .v{font-size:40px;font-weight:700;letter-spacing:-.03em}
.strip .l{font-family:var(--mono);font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--p40);margin-top:6px}
@media(max-width:760px){.strip{grid-template-columns:repeat(2,1fr)}.strip>div:nth-child(2){border-right:none}}

/* projects */
.pgrid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
@media(max-width:760px){.pgrid{grid-template-columns:1fr}}
.pfeatured{display:grid;grid-template-columns:repeat(2,1fr);gap:18px;margin-bottom:18px}
@media(max-width:760px){.pfeatured{grid-template-columns:1fr}}
.pcard-feat{padding:36px;background:rgba(244,243,239,.02)}
.pcard-feat::before{height:4px}
.pcard-feat h4{font-size:28px}
.pcard-feat p{font-size:15px}
.featflag{margin-left:auto;font-family:var(--mono);font-size:9px;letter-spacing:.16em;text-transform:uppercase;color:#0a0a0a;background:var(--ac,var(--red));padding:3px 8px;align-self:flex-start}
.pcard{border:1px solid var(--border);padding:28px;position:relative;overflow:hidden;transition:border-color .18s,background .01s;clip-path:polygon(14px 0,100% 0,100% calc(100% - 14px),calc(100% - 14px) 100%,0 100%,0 14px);display:block}
.pcard::before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:var(--ac,var(--red))}
.pcard:hover{background:rgba(244,243,239,.02)}
.pcard .row{display:flex;align-items:center;gap:9px;margin-bottom:13px}
.pcard .cdot{width:8px;height:8px;border-radius:50%;background:var(--ac,var(--red));box-shadow:0 0 10px var(--ac,var(--red));animation:cdotPulse 1.8s ease-in-out infinite}
@keyframes cdotPulse{0%,100%{opacity:1}50%{opacity:.3}}
.pcard .ptag{font-family:var(--mono);font-size:10.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--ac,var(--red))}
.pcard h4{font-size:23px;margin-bottom:10px}
.pcard p{color:var(--p70);font-size:14px;margin-bottom:16px;line-height:1.55}
.pcard .tags{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:18px}
.pcard .tags span{font-family:var(--mono);font-size:11px;color:var(--p50);border:1px solid var(--border);padding:4px 9px}
.pcard .plink{font-family:var(--mono);font-size:12.5px;text-transform:uppercase;letter-spacing:.06em;color:var(--paper);display:inline-flex;gap:7px;transition:gap .2s,color .2s}
.pcard:hover .plink{color:var(--ac,var(--red));gap:12px}

/* ===== SIGNATURE 4: TERMINAL + BLUEPRINT ANNOTATIONS ===== */
.term-stage{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,760px) minmax(0,1fr);gap:24px;align-items:center}
@media(max-width:900px){.term-stage{grid-template-columns:minmax(0,1fr);gap:18px}}
.annot{display:flex;flex-direction:column;gap:36px}
.annot.left{align-items:flex-end;text-align:right;padding-right:28px}
.annot.right{align-items:flex-start;text-align:left;padding-left:28px}
@media(max-width:900px){.annot{flex-direction:row;flex-wrap:wrap;gap:18px;justify-content:center;text-align:center;padding:24px 0 0}.annot.left,.annot.right{align-items:center;text-align:center}}
.annot .a{max-width:min(200px,100%)}
.annot .at{font-family:var(--mono);font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--paper)}
.annot .ad{font-family:var(--mono);font-size:10.5px;color:var(--p40);margin-top:5px;line-height:1.4}
.crt{width:100%;max-width:760px;min-width:0;margin:0 auto;background:linear-gradient(160deg,#1f1f1f,#121212);border:1px solid var(--border);border-radius:14px;padding:16px;box-shadow:0 40px 90px -40px #000}
.crt-bezel{position:relative}
.crt-led{position:absolute;top:12px;right:12px;width:8px;height:8px;border-radius:50%;background:var(--green);box-shadow:0 0 10px var(--green);animation:led 1.6s step-end infinite;z-index:3}
@keyframes led{50%{opacity:.25}}
.term{position:relative;width:100%;min-width:0;box-sizing:border-box;background:var(--screen);border:1px solid #000;border-radius:8px;padding:18px;font-family:var(--mono);font-size:11px;line-height:1.85;height:400px;overflow-y:auto;overflow-x:hidden;box-shadow:inset 0 0 60px rgba(0,0,0,.7)}
.term .ascii{color:var(--red);font-size:8px;line-height:1.15;white-space:pre;margin-bottom:0;opacity:.85;overflow-x:auto}
.term-head{display:flex;flex-wrap:wrap;align-items:center;gap:22px;margin-bottom:14px}
.term-meta{display:flex;flex-direction:column;gap:3px;font-family:var(--mono);font-size:9.5px;letter-spacing:.1em;line-height:1.5;color:var(--red);opacity:.85}
.tline{color:var(--paper);white-space:pre-wrap;overflow-wrap:anywhere;word-break:break-word}
.tline .pr{color:var(--red);margin-right:8px}
.tline.ok{color:var(--green)} .tline.dimx{color:var(--p40)}
.tcur{display:inline-block;width:8px;height:13px;background:var(--red);vertical-align:-2px;margin-left:3px;animation:blink 1s step-end infinite}
@keyframes blink{50%{opacity:0}}

/* faq */
.faq{border-top:1px solid var(--border);max-width:860px}
.faq details{border-bottom:1px solid var(--border)}
.faq summary{list-style:none;cursor:pointer;padding:22px 0;display:flex;gap:16px;align-items:flex-start}
.faq summary::-webkit-details-marker{display:none}
.faq .qn{font-family:var(--mono);font-size:12px;color:var(--red);padding-top:4px;min-width:30px}
.faq .qq{font-size:19px;font-weight:600;flex:1;letter-spacing:-.02em}
.faq .chev{font-family:var(--mono);color:var(--p40);transition:transform .25s,color .25s}
.faq details[open] .chev{transform:rotate(180deg);color:var(--red)}
.faq .ans{color:var(--p70);font-size:14.5px;line-height:1.6;padding:0 0 24px 46px;max-width:70ch}

/* cta */
.cta{text-align:center;padding:130px 0 150px;position:relative;border-top:1px solid var(--border)}
.cta h2{font-size:clamp(40px,7vw,88px);line-height:.92;max-width:16ch;margin:0 auto 30px;text-shadow:0 0 60px rgba(0,0,0,.6)}
.cta .vortex{position:absolute;left:50%;bottom:0;transform:translateX(-50%);width:120vw;height:340px;background:radial-gradient(ellipse at center bottom,var(--red-glow),transparent 60%);filter:blur(40px);opacity:.5;pointer-events:none}
.cta-actions{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;position:relative;z-index:1}
.cta .fine{font-family:var(--mono);font-size:11px;color:var(--p40);margin-top:18px;letter-spacing:.05em}

/* footer */
footer{background:var(--black);border-top:1px solid var(--border);padding:54px 0 30px}
.foot-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:28px}
.foot-grid>div:first-child{display:flex;flex-direction:column;justify-content:flex-end}
@media(max-width:760px){.foot-grid{grid-template-columns:1fr}}
footer .ftag{color:var(--p50);font-size:14px;max-width:36ch;margin-top:12px}
.foot-connect a{display:flex;align-items:center;gap:9px}
.foot-connect a svg{flex:none;opacity:.6;transition:opacity .2s}
.foot-connect a:hover svg{opacity:1}
footer h5{font-family:var(--mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--p40);margin-bottom:14px}
footer a{display:block;color:var(--p70);font-size:14px;margin-bottom:9px;transition:color .2s}
footer a:hover{color:var(--red)}
.foot-bottom{display:flex;justify-content:space-between;align-items:center;border-top:1px solid var(--border);margin-top:40px;padding-top:20px;font-family:var(--mono);font-size:11px;color:var(--p40);letter-spacing:.04em;flex-wrap:wrap;gap:10px}
.foot-bottom .stat{display:flex;align-items:center;gap:8px}
.foot-bottom .sq{width:8px;height:8px;background:var(--red);animation:led 1.4s step-end infinite}

/* reveal */
.reveal{opacity:0;transform:translateY(22px);transition:opacity .7s cubic-bezier(.2,.7,.2,1),transform .7s cubic-bezier(.2,.7,.2,1)}
.reveal.vis{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none}.bgfx__blob{animation:none}}

/* ===== HERO (index) ===== */
.hero{background:var(--grad);color:var(--ink);width:100vw;position:relative;left:50%;transform:translateX(-50%);margin-top:57px;padding:96px 0 0;overflow:hidden}
.hero-in{max-width:var(--maxw);margin:0 auto;padding:0 28px;position:relative;z-index:1}
.hero .label{color:var(--ink);opacity:.82}
.hero h1{font-size:clamp(44px,8.2vw,104px);line-height:.86;letter-spacing:-.04em;margin:18px 0 0;color:var(--ink);max-width:15ch;font-weight:700}
.hero p.lede{font-size:clamp(16px,2vw,21px);color:var(--ink);opacity:.92;max-width:600px;margin:24px 0 30px;line-height:1.45}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap;padding-bottom:54px}
/* Hero brand-name — fully on-screen outline wordmark + cursor sheen */
@property --hbn-x{syntax:"<percentage>";inherits:false;initial-value:50%}
@keyframes hbnSweep{0%{--hbn-x:10%}50%{--hbn-x:90%}100%{--hbn-x:10%}}
.hbn{position:absolute;right:max(18px,2vw);bottom:84px;z-index:0;pointer-events:none;display:grid;line-height:.9;font-family:var(--mono);font-weight:700;letter-spacing:-.01em;font-size:clamp(20px,3vw,40px);transform:translate3d(0,0,0);transition:transform .35s cubic-bezier(.2,.7,.2,1)}
.hbn span{display:block;grid-area:1/1}
.hbn-base{color:transparent;-webkit-text-stroke:1.5px var(--ink);text-stroke:1.5px var(--ink);opacity:.18}
.hbn-sheen{color:var(--ink);opacity:.30;-webkit-mask-image:radial-gradient(120px circle at var(--hbn-x,50%) 50%,#000 0%,transparent 62%);mask-image:radial-gradient(120px circle at var(--hbn-x,50%) 50%,#000 0%,transparent 62%);transition:opacity .4s;animation:hbnSweep 8s ease-in-out infinite}
@media(max-width:640px){.hbn{display:none}}
@media(prefers-reduced-motion:reduce){.hbn{transition:none}.hbn-sheen{-webkit-mask-image:none;mask-image:none;opacity:0;animation:none}}
.ticker{border-top:1px solid rgba(26,26,26,.25);overflow:hidden;white-space:nowrap;padding:13px 0;position:relative;z-index:1;-webkit-mask-image:linear-gradient(90deg,transparent,#000 6%,#000 94%,transparent);mask-image:linear-gradient(90deg,transparent,#000 6%,#000 94%,transparent)}
.ticker-track{display:inline-flex;will-change:transform;animation:tick 30s linear infinite}
.ticker:hover .ticker-track{animation-play-state:paused}
.ticker-set{display:inline-flex;align-items:center}
.ticker-item{font-family:var(--mono);font-size:12px;letter-spacing:.06em;text-transform:uppercase;color:var(--ink);opacity:.75;padding:0 16px}
.ticker-dot{color:var(--ink);opacity:.45}
@keyframes tick{from{transform:translateX(0)}to{transform:translateX(-50%)}}

/* ===== CASE STUDY pages ===== */
.cs-hero{margin-top:57px;padding:90px 0 60px;border-bottom:1px solid var(--border);position:relative}
.cs-hero::before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:var(--ac,var(--red))}
.cs-back{font-family:var(--mono);font-size:12px;color:var(--p50);letter-spacing:.06em;text-transform:uppercase;display:inline-flex;gap:8px;margin-bottom:26px;transition:color .2s,gap .2s}
.cs-back:hover{color:var(--ac,var(--red));gap:12px}
.cs-hero .ptag{font-family:var(--mono);font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--ac,var(--red));display:flex;align-items:center;gap:9px}
.cs-hero .cdot{width:8px;height:8px;border-radius:50%;background:var(--ac,var(--red));box-shadow:0 0 10px var(--ac,var(--red))}
.cs-hero h1{font-size:clamp(38px,6vw,72px);margin:16px 0 14px;line-height:.92}
.cs-hero .lede{font-size:clamp(17px,2.2vw,22px);color:var(--p70);max-width:60ch}
.cs-hero .cs-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:26px}
.cs-meta{display:flex;flex-wrap:wrap;gap:0;border:1px solid var(--border);margin-top:36px}
.cs-meta>div{padding:18px 24px;border-right:1px solid var(--border);flex:1;min-width:140px}
.cs-meta>div:last-child{border-right:none}
.cs-meta .l{font-family:var(--mono);font-size:10px;letter-spacing:.12em;text-transform:uppercase;color:var(--p40);margin-bottom:6px}
.cs-meta .v{font-family:var(--mono);font-size:13px;color:var(--paper)}
.cs-sec{padding:64px 0;border-bottom:1px solid var(--border-dim)}
.cs-sec h2{font-size:clamp(24px,3.2vw,36px);margin-bottom:18px}
.cs-sec p{color:var(--p70);font-size:16px;max-width:70ch;margin-bottom:14px}
.cs-list{list-style:none;display:grid;gap:14px;max-width:760px}
.cs-list li{padding-left:26px;position:relative;color:var(--p70);font-size:15px;line-height:1.55}
.cs-list li::before{content:"▹";position:absolute;left:0;color:var(--ac,var(--red))}
.cs-flow{display:flex;flex-wrap:wrap;align-items:center;gap:0;font-family:var(--mono);font-size:12px;margin:8px 0 4px}
.cs-flow .fn{border:1px solid var(--border);padding:12px 16px;color:var(--paper);letter-spacing:.04em}
.cs-flow .fa{color:var(--ac,var(--red));padding:0 12px}
.cs-tags{display:flex;flex-wrap:wrap;gap:8px;max-width:760px}
.cs-tags span{font-family:var(--mono);font-size:12px;color:var(--p50);border:1px solid var(--border);padding:6px 12px}
.cs-note{border:1px solid var(--border);border-left:3px solid var(--ac,var(--red));padding:18px 22px;max-width:760px;color:var(--p70);font-size:14.5px;background:rgba(244,243,239,.02)}
.cs-note .lab{font-family:var(--mono);font-size:10px;letter-spacing:.14em;text-transform:uppercase;color:var(--ac,var(--red));display:block;margin-bottom:8px}
.cs-next{display:flex;justify-content:space-between;align-items:center;padding:40px 0;flex-wrap:wrap;gap:16px}
.trial-note{font-family:var(--mono);font-size:10.5px;color:var(--p30);text-align:center;padding:18px;letter-spacing:.06em;border-top:1px solid var(--border-dim)}

/* ===== ABOUT ===== */
.about-grid{display:grid;grid-template-columns:1.4fr 1fr;gap:48px;align-items:start;max-width:var(--maxw)}
.about-main{max-width:60ch}
.about-lead{font-family:var(--sans);font-size:clamp(18px,2.2vw,22px);line-height:1.5;color:var(--paper);margin:0 0 18px}
.about-body{font-size:15.5px;line-height:1.7;color:var(--p70);margin:0 0 16px}
.about-want{display:flex;flex-wrap:wrap;gap:8px 14px;align-items:baseline;margin:24px 0 28px;padding-top:20px;border-top:1px solid var(--border)}
.about-want-k{font-family:var(--mono);font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--red)}
.about-want-v{font-size:14.5px;color:var(--p70)}
.about-cta{display:flex;flex-wrap:wrap;gap:12px}
.about-facts{border:1px solid var(--border);border-radius:14px;padding:24px;background:rgba(244,243,239,.02);backdrop-filter:blur(4px)}
.about-facts-h{font-family:var(--mono);font-size:11px;letter-spacing:.1em;color:var(--p40);margin-bottom:18px}
.about-rows{margin:0}
.about-row{display:flex;justify-content:space-between;gap:16px;padding:11px 0;border-top:1px solid var(--border)}
.about-row:first-child{border-top:0;padding-top:0}
.about-row dt{font-family:var(--mono);font-size:11.5px;letter-spacing:.06em;text-transform:uppercase;color:var(--p40);flex:0 0 auto}
.about-row dd{margin:0;font-size:13.5px;color:var(--paper);text-align:right;line-height:1.45}
.about-live{color:var(--green);font-size:10px;margin-right:4px;display:inline-block;text-shadow:0 0 6px var(--green);animation:led 1.4s step-end infinite}
@media(max-width:820px){.about-grid{grid-template-columns:1fr;gap:32px}}

/* ===== warm gold ambient blob ===== */
.bgfx__blob.gold{background:radial-gradient(circle,var(--gold),transparent 65%);top:auto;bottom:-16vmax;right:auto;left:-10vmax;opacity:.07;animation:drift2 34s ease-in-out infinite alternate}
@keyframes drift2{to{transform:translate(7vmax,-5vmax) scale(1.12)}}

/* ===== Approach panel — step-synced stage + passive ambient ===== */
.panel-col{position:relative}
.panel-stage{position:relative;width:100%;min-height:300px;display:grid}
.panel-stage>.pstage,.panel-stage>.stgbg{grid-area:1/1}
/* stage interactive background (behind all panels) */
.stgbg{z-index:0;overflow:hidden;pointer-events:none}
.stgbg-grid{position:absolute;inset:-40px;opacity:.45;background-image:radial-gradient(var(--border) 1px,transparent 1px);background-size:26px 26px;transform:translate3d(0,0,0);transition:transform .35s ease-out;animation:stgbgDrift 26s ease-in-out infinite alternate;-webkit-mask-image:radial-gradient(120% 120% at 50% 50%,#000 55%,transparent 100%);mask-image:radial-gradient(120% 120% at 50% 50%,#000 55%,transparent 100%)}
@keyframes stgbgDrift{from{background-position:0 0}to{background-position:30px 22px}}
.pstage{z-index:1;display:flex;align-items:center;justify-content:center;opacity:0;transform:translateY(10px);pointer-events:none;transition:opacity .5s ease,transform .5s ease}
.pstage.active{opacity:1;transform:none;pointer-events:auto}
/* spec-first diagram (step 1) — premium dark */
.specd-svg{display:block;width:100%;max-width:460px;margin:0 auto;height:auto}
.specd-svg rect{transition:stroke .2s}
.specd-svg .specd-h{font:700 8px var(--mono);fill:var(--paper);letter-spacing:.6px}
.specd-svg .specd-vh{font:700 8.5px var(--mono);letter-spacing:.6px}
.specd-svg .specd-tag{font:500 6px var(--mono);fill:var(--p40);text-anchor:end;letter-spacing:.4px}
.specd-svg .specd-k{font:600 7px var(--mono);fill:var(--p70)}
.specd-svg .specd-v{font:400 7px var(--mono);fill:var(--p50)}
.specd-svg .specd-c{font:500 6.8px var(--mono);fill:var(--p70);letter-spacing:.3px}
.specd-svg .specd-dot{filter:drop-shadow(0 0 3px currentColor)}
@media(prefers-reduced-motion:reduce){.specd-svg animateMotion{display:none}.specd-dot{display:none}}
.ps-card{width:100%;max-width:380px;background:rgba(244,243,239,.025);border:1px solid var(--border);border-radius:14px;padding:20px 22px;font-family:var(--mono)}
.ps-card-h{font-size:11px;letter-spacing:.18em;color:var(--p50);margin-bottom:18px}
.ps-bars{display:flex;flex-direction:column;gap:15px}
.ps-bar{position:relative;display:grid;grid-template-columns:1fr auto;align-items:baseline;gap:6px;padding-bottom:10px}
.ps-bl{font-size:11px;color:var(--p70)}
.ps-bv{font-size:13px;color:var(--green);font-weight:600}
.ps-bar i{grid-column:1/3;display:block;height:5px;border-radius:3px;background:var(--p20);position:relative;overflow:hidden}
.ps-bar i::after{content:"";position:absolute;inset:0;width:0;border-radius:3px;background:var(--grad);transition:width .9s cubic-bezier(.2,.7,.2,1)}
.pstage[data-step="1"].active .ps-bar.filled i::after{width:var(--w,0)}
.ps-term{padding:0;overflow:hidden;max-width:420px}
.ps-term-bar{display:flex;align-items:center;gap:6px;padding:9px 12px;border-bottom:1px solid var(--border);font-size:10px;color:var(--p40)}
.ps-term-bar i{width:8px;height:8px;border-radius:50%;background:var(--p30)}
.ps-term-bar span{margin-left:6px;letter-spacing:.1em}
.ps-term-body{margin:0;padding:14px 16px;font-size:11px;line-height:1.7;color:var(--p70);white-space:pre-wrap}
.ps-c{color:var(--p40)}.ps-ok{color:var(--green)}.ps-dim{color:var(--p30)}
@media(prefers-reduced-motion:reduce){.stgbg-grid{animation:none;transition:none}.pstage{transition:none}.ps-bar i::after{transition:none}}

/* ===== Boundaries themed background (two-zone node graph) ===== */
.bd-diagram>*:not(.bdbg){position:relative;z-index:1}
.bdbg{position:absolute;inset:0;z-index:0;overflow:hidden;pointer-events:none;background:radial-gradient(120% 90% at 50% 40%,transparent 55%,var(--ink) 100%)}
.bdbg-svg{width:100%;height:100%;opacity:.6}
.bdbg-net line,.bdbg-cross line{stroke:var(--border);stroke-width:1;fill:none}
.bdbg-net circle{fill:var(--p30);stroke:var(--p40);stroke-width:.6;transition:fill .25s ease,stroke .25s ease}
.bdbg-net{animation:bdbg-breathe 7s ease-in-out infinite;transform-origin:center}
.bdbg-demo{animation-delay:-3.5s}
@keyframes bdbg-breathe{0%,100%{opacity:.55}50%{opacity:.9}}
.bdbg-boundary{stroke:var(--p40);stroke-width:1;stroke-dasharray:3 5;opacity:.55;animation:bdbg-flow 2.4s linear infinite}
@keyframes bdbg-flow{to{stroke-dashoffset:-8}}
.bdbg-sev{stroke:var(--p40);stroke-width:1.2;stroke-dasharray:6 60;stroke-dashoffset:60;opacity:.7;animation:bdbg-cut 4.2s ease-in-out infinite}
.bdbg-sev2{animation-delay:-1.4s;stroke:var(--red)}
.bdbg-sev3{animation-delay:-2.8s;stroke:var(--green)}
@keyframes bdbg-cut{0%{stroke-dashoffset:60;opacity:0}35%{opacity:.8}70%{stroke-dashoffset:6;opacity:.8}78%{stroke-dashoffset:6;opacity:0}100%{stroke-dashoffset:6;opacity:0}}
.bdbg-spark-r{fill:var(--red)}.bdbg-spark-g{fill:var(--green)}
.bdbg-spark{opacity:0;animation:bdbg-spark 4.2s ease-in-out infinite}
.bdbg-spark-g{animation-delay:-2.1s}
@keyframes bdbg-spark{0%,68%{opacity:0;r:1}74%{opacity:.9;r:3}100%{opacity:0;r:1}}
.bdbg-net circle.lit{fill:var(--green);stroke:var(--green)}
.bd-travel{fill:var(--green);filter:drop-shadow(0 0 4px var(--green))}
@keyframes bdFlow{0%{background-position:0 110%}100%{background-position:0 -110%}}
@media(prefers-reduced-motion:reduce){.bdbg-net,.bdbg-boundary,.bdbg-sev,.bdbg-spark{animation:none}.bdbg-sev{stroke-dashoffset:6;opacity:.5}.bdbg-spark{opacity:.7}.bd-travel{opacity:0}.bd-sev .ln{animation:none}}


/* ===== Approach stage — cursor-follow orange glow ===== */
.stgbg-glow{position:absolute;inset:-20px;z-index:0;pointer-events:none;opacity:0;transition:opacity .4s ease;background:radial-gradient(240px circle at var(--gx,50%) var(--gy,50%),rgba(255,138,61,.38),transparent 62%)}
.panel-stage.glow-on .stgbg-glow{opacity:1}
@media(prefers-reduced-motion:reduce){.stgbg-glow{display:none}}

/* ===== About profile card — interactive (tilt + cursor glow + scan) ===== */
.about-facts{position:relative;overflow:hidden;transform-style:preserve-3d;will-change:transform;transition:transform .25s cubic-bezier(.2,.7,.2,1),border-color .25s,box-shadow .25s}
.about-facts::before{content:"";position:absolute;inset:0;z-index:0;pointer-events:none;opacity:0;transition:opacity .35s ease;background:radial-gradient(260px circle at var(--mx,50%) var(--my,50%),rgba(255,138,61,.16),transparent 60%)}
.about-facts:hover{border-color:rgba(255,138,61,.32);box-shadow:0 24px 60px -30px rgba(237,70,45,.45)}
.about-facts:hover::before{opacity:1}
.about-facts>*{position:relative;z-index:1}
.af-scan{position:absolute;left:0;right:0;top:0;height:1.5px;z-index:2;pointer-events:none;opacity:0;background:linear-gradient(90deg,transparent,var(--red2),transparent);animation:afScan 6s ease-in-out infinite}
@keyframes afScan{0%{top:0;opacity:0}8%{opacity:.55}48%{top:100%;opacity:.55}56%{opacity:0}100%{top:0;opacity:0}}
@media(prefers-reduced-motion:reduce){.about-facts{transition:none}.about-facts::before,.af-scan{display:none}}
@media(max-width:820px){.about-facts{transform:none!important}}


/* ===== nav: reserved EN/DE language switch (rightmost) + back-arrow ===== */
.lang-sw{position:relative;flex:none;font-family:var(--mono)}
.lang-cur{display:inline-flex;align-items:center;gap:8px;padding:6px 8px;background:transparent;border:0;color:var(--paper);cursor:pointer;font:600 11px var(--mono);letter-spacing:.1em;opacity:.92;transition:color .2s,opacity .2s}
.lang-cur:hover,.lang-sw.open .lang-cur{color:var(--red);opacity:1}
.lang-cur .chev{display:inline-block;width:6px;height:6px;border-right:1.6px solid currentColor;border-bottom:1.6px solid currentColor;transform:rotate(45deg) translateY(-1px);transition:transform .25s cubic-bezier(.2,.7,.2,1),border-color .2s;font-size:0;line-height:0}
.lang-sw.open .lang-cur .chev{transform:rotate(-135deg) translateY(2px)}
.lang-menu{position:absolute;top:calc(100% + 9px);right:0;min-width:104px;background:rgba(17,15,19,.55);-webkit-backdrop-filter:blur(18px) saturate(1.5);backdrop-filter:blur(18px) saturate(1.5);border:1px solid rgba(255,255,255,.12);border-radius:12px;box-shadow:0 16px 40px -18px rgba(0,0,0,.7),inset 0 1px 0 rgba(255,255,255,.07);padding:5px;display:flex;flex-direction:column;gap:2px;opacity:0;transform:translateY(-8px) scale(.97);transform-origin:top right;visibility:hidden;pointer-events:none;transition:opacity .24s cubic-bezier(.2,.7,.2,1),transform .24s cubic-bezier(.2,.7,.2,1),visibility .24s;z-index:600}
.lang-sw.open .lang-menu{opacity:1;transform:none;visibility:visible;pointer-events:auto}
.lang-menu button{display:flex;align-items:center;gap:9px;padding:8px 13px;background:transparent;border:0;border-radius:8px;color:var(--p70);cursor:pointer;font:600 11px var(--mono);letter-spacing:.07em;text-align:left;transition:background .15s,color .15s}
.lang-menu button::before{content:"";width:5px;height:5px;border-radius:50%;background:transparent;flex:none;transition:background .15s,box-shadow .15s}
.lang-menu button:hover{background:rgba(255,255,255,.08);color:var(--paper)}
.lang-menu button.on{color:var(--red)}
.lang-menu button.on::before{background:var(--red);box-shadow:0 0 8px var(--red)}
.brand .bk{display:inline-block;color:var(--p50);font-family:var(--mono);transition:transform .25s cubic-bezier(.2,.7,.2,1),color .25s}
.brand:hover .bk{transform:translateX(-4px);color:var(--red)}


/* responsive nav fixes (audit) */
@media(max-width:560px){.nav-links .nav-cta{display:none}.nav-in{gap:12px}.brand{font-size:12.5px}.lang-cur{padding:9px 13px}}


/* global cursor-follow warm glow */
.cursor-glow{position:absolute;inset:0;pointer-events:none;background:radial-gradient(320px circle at var(--cgx,50%) var(--cgy,50%),rgba(255,150,70,.14),transparent 62%)}
@media(prefers-reduced-motion:reduce){.cursor-glow{display:none}}

/* header cursor-follow glow */
nav::before{content:"";position:absolute;inset:0;z-index:0;pointer-events:none;opacity:0;transition:opacity .3s ease;background:radial-gradient(260px circle at var(--nx,50%) 50%,rgba(255,150,70,.22),transparent 72%)}
.nav-in{position:relative;z-index:1}
nav:hover::before{opacity:1}


/* node-flow: signal-driven node activation */
.nfx-node .bx{transition:stroke .22s ease,filter .22s ease}
.nfx-node .chip{transition:fill .22s ease}
.nfx-node.active.g .bx{stroke:var(--green);filter:url(#nf-g)}
.nfx-node.active.g .chip{fill:rgba(34,197,94,.32)}
.nfx-node.active.r .bx{stroke:var(--red);filter:url(#nf-r)}
.nfx-node.active.r .chip{fill:rgba(237,70,45,.32)}
@media(prefers-reduced-motion:reduce){.nfx-dot{display:none}}

/* outcomes: manual vs automated bars (replaces system map) */
.mvbars{margin-top:6px}
.mvrow{display:grid;grid-template-columns:188px 1fr 158px;align-items:center;gap:14px;margin-bottom:13px}
.mvname{font-family:var(--mono);font-size:11px;letter-spacing:.06em;color:var(--ac,var(--red));display:flex;align-items:center;gap:8px}
.mvdot{width:7px;height:7px;border-radius:50%;background:var(--ac,var(--red));flex:none}
.mvtrack{position:relative;height:12px;background:rgba(244,243,239,.05);border:1px solid var(--border);overflow:hidden}
.mvfill{position:absolute;top:0;left:0;height:100%;width:0;color:var(--ac,var(--red));background-image:repeating-linear-gradient(90deg,currentColor 0,currentColor 6px,rgba(0,0,0,.5) 6px,rgba(0,0,0,.5) 8px)}
.mvpip{position:absolute;top:-2px;height:16px;width:3px;background:var(--paper);opacity:0;left:0}
.mvval{font-family:var(--mono);font-size:11.5px;text-align:right;color:var(--p70)}
.mvest{font-family:var(--mono);font-size:11px;color:var(--p40)}
.mvbars.run .mvfill{width:calc(var(--w)*1%);transition:width 2s cubic-bezier(.22,.7,.2,1) var(--d,0s)}
.mvbars.run .mvpip{left:calc(var(--w)*1% - 3px);opacity:1;transition:opacity .14s ease calc(2s + var(--d,0s)),left .14s ease calc(2s + var(--d,0s))}
@media(max-width:640px){.mvrow{grid-template-columns:1fr;gap:6px;margin-bottom:18px}.mvval{text-align:left}}
@media(prefers-reduced-motion:reduce){.mvbars.run .mvfill{transition:none}.mvbars.run .mvpip{transition:none}}

/* unified mono microcopy weight (readability) */
.nav-links a,.pcard .ptag,.pcard .tags span,.pcard .plink,.ncell .tag,.strip .l,.annot .at,.annot .ad,.bd-box,.bd-sev .tx,.mvname,.mvval{font-weight:500}

@media(prefers-reduced-motion:reduce){.ticker-track{animation:none}}

/* mobile hamburger menu */
.navtoggle{display:none;margin-left:6px;width:44px;height:44px;flex-direction:column;justify-content:center;align-items:center;gap:5px;background:none;border:1px solid var(--border);cursor:pointer;padding:0;flex:none}
.navtoggle span{display:block;width:20px;height:2px;background:var(--paper);transition:transform .25s ease,opacity .2s ease}
.navtoggle.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.navtoggle.open span:nth-child(2){opacity:0}
.navtoggle.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.navmenu{position:absolute;top:100%;left:0;right:0;background:var(--ink);border-bottom:1px solid var(--border);display:flex;flex-direction:column;padding:6px 20px 22px;opacity:0;visibility:hidden;transform:translateY(-8px);transition:opacity .22s ease,transform .22s ease,visibility .22s;z-index:60}
.navmenu.open{opacity:1;visibility:visible;transform:translateY(0)}
.navmenu a{font-family:var(--mono);font-size:14px;letter-spacing:.06em;text-transform:uppercase;color:var(--p70);padding:15px 4px;border-bottom:1px solid var(--border-dim);transition:color .2s}
.navmenu a:hover,.navmenu a:active{color:var(--paper)}
.navmenu .nm-btn{margin-top:14px;border:1px solid var(--border);text-align:center;color:var(--paper);padding:15px;clip-path:polygon(10px 0,100% 0,100% calc(100% - 10px),calc(100% - 10px) 100%,0 100%,0 10px)}
.navmenu .nm-cv{margin-top:10px;background:var(--grad);color:#000;border-color:transparent}
@media(max-width:820px){.navtoggle{display:flex}}
@media(min-width:821px){.navmenu{display:none}}
@media(prefers-reduced-motion:reduce){.navtoggle span,.navmenu{transition:none}}

/* mobile: disable only pointer-driven + decorative-loop motion (keep meaningful content animations) */
@media(max-width:820px){
  .cursor-glow,.stgbg-glow{display:none}
  nav::before{display:none}
  .bgfx__blob{animation:none}
  .stgbg-grid{animation:none}
  .hbn-sheen{animation:none}
  .af-scan{display:none}
}

/* mobile: accordion for capability + problem cells (Capabilities + The problem) */
@media(max-width:640px){
  .ncell{cursor:pointer}
  .ncell>h4{display:flex;justify-content:space-between;align-items:center;gap:10px;margin-bottom:0}
  .ncell>h4::after{content:"";flex:none;width:7px;height:7px;border-right:2px solid var(--p50);border-bottom:2px solid var(--p50);transform:rotate(45deg);transition:transform .25s ease;margin-top:-4px}
  .ncell.open>h4::after{transform:rotate(-135deg);margin-top:2px}
  .ncell>p{max-height:0;opacity:0;overflow:hidden;margin-top:0;transition:max-height .3s ease,opacity .25s ease,margin-top .3s ease}
  .ncell.open>p{max-height:360px;opacity:1;margin-top:10px}
}
@media(prefers-reduced-motion:reduce){.ncell>p{transition:none}.ncell>h4::after{transition:none}}

/* mobile: compact project cards (The Systems) — hide description+tags, keep category+title+link; tap->case study */
@media(max-width:640px){
  .pcard>p,.pcard .tags{display:none}
  .pcard{padding:18px 20px}
  .pcard-feat{padding:20px}
  .pcard h4{margin-bottom:12px}
  .pfeatured{gap:14px;margin-bottom:14px}
  .pgrid{gap:14px}
}

/* mobile: lang tap target >=44px */
@media(max-width:820px){.lang-cur{min-height:44px;display:inline-flex;align-items:center}.lang-menu button{min-height:44px;display:flex;align-items:center}}

/* mobile: tighter section padding (parity with case studies) */
@media(max-width:640px){section.block{padding:56px 0}.cta{padding:84px 0 92px}.featflag{font-size:10.5px}.term-meta{font-size:10.5px}footer a{min-height:44px;display:flex;align-items:center}}
@media(max-width:820px){.cta{overflow:hidden}}