:root{
  --paper:#EDF0F3; --surface:#FFFFFF; --ink:#172033; --muted:#4F5B6E;
  --line:#C9D0DA; --accent:#2445C4; --accent-ink:#FFFFFF; --soft:#DDE3F7; --shadow:rgba(23,32,51,.45);
  --logo-a:#2445C4; --logo-b:#0BA5C4;
  --display:"Bricolage Grotesque", "Segoe UI", system-ui, sans-serif;
  --body:"IBM Plex Sans", "Segoe UI", system-ui, sans-serif;
  --mono:"IBM Plex Mono", ui-monospace, "SFMono-Regular", Menlo, monospace;
  box-sizing:border-box;
  padding-top:env(safe-area-inset-top,0px);
  padding-bottom:env(safe-area-inset-bottom,0px);
}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    --paper:#111723; --surface:#18202F; --ink:#E6EAF1; --muted:#A2ACBC;
    --line:#2C364A; --accent:#8FA6FF; --accent-ink:#0E1424; --soft:#1F2A45; --shadow:rgba(0,0,0,.7);
    --logo-a:#8094FF; --logo-b:#45D6E6;
  }
}
:root[data-theme="dark"]{
  --paper:#111723; --surface:#18202F; --ink:#E6EAF1; --muted:#A2ACBC;
  --line:#2C364A; --accent:#8FA6FF; --accent-ink:#0E1424; --soft:#1F2A45; --shadow:rgba(0,0,0,.7);
  --logo-a:#8094FF; --logo-b:#45D6E6;
}
*,*::before,*::after{box-sizing:inherit}
html{scroll-behavior:smooth;scroll-padding-top:calc(env(safe-area-inset-top,0px) + 72px)}
@media (prefers-reduced-motion: reduce){html{scroll-behavior:auto}}
body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--body);font-size:1.0625rem;line-height:1.6;-webkit-font-smoothing:antialiased}
img{max-width:100%}
a{color:var(--accent);text-underline-offset:3px}
a:focus-visible,button:focus-visible{outline:3px solid var(--accent);outline-offset:3px;border-radius:4px}
code,.code{font-family:var(--mono);font-size:.9em}
.wrap{max-width:1120px;margin:0 auto;padding:0 24px}


/* Backdrop: faint dot grid fading out below the hero */
main{position:relative;overflow-x:clip}
.backdrop{position:absolute;inset:0 0 auto 0;height:1100px;z-index:-1;pointer-events:none;
  background-image:radial-gradient(color-mix(in srgb,var(--ink) 16%,transparent) 1px,transparent 1.4px);
  background-size:22px 22px;
  -webkit-mask-image:linear-gradient(180deg,#000 0%,rgba(0,0,0,.55) 45%,transparent 100%);
          mask-image:linear-gradient(180deg,#000 0%,rgba(0,0,0,.55) 45%,transparent 100%)}
.backdrop::after{content:"";position:absolute;right:-8%;top:160px;width:720px;height:720px;border-radius:50%;
  background:radial-gradient(closest-side,color-mix(in srgb,var(--accent) 20%,transparent),transparent)}
.hero{position:relative}
.hero > *:not(.stack-art){position:relative;z-index:1}

/* Signature: the stack, as an exploded isometric view */
.stack-art{position:absolute;right:-30px;top:300px;width:420px;height:560px;pointer-events:none;z-index:0}
.plane{position:absolute;left:50%;width:250px;height:250px;margin-left:-125px;border-radius:30px;
  transform:translate3d(0,var(--py,0px),0) rotateX(58deg) rotateZ(-45deg);
  transition:box-shadow .3s,border-color .3s,background .3s;
  border:1.5px solid color-mix(in srgb,var(--accent) 30%,var(--line));
  box-shadow:0 40px 50px -34px var(--shadow)}
.plane.p1{top:0;z-index:4;border:0;
  background:linear-gradient(135deg,var(--accent),color-mix(in srgb,var(--accent) 55%,#62C6FF))}
.plane.p1::before{content:"";position:absolute;inset:26px;border-radius:16px;
  background:repeating-linear-gradient(0deg,rgba(255,255,255,.28) 0 10px,transparent 10px 26px);opacity:.7}
.plane.p2{top:92px;z-index:3;background:color-mix(in srgb,var(--accent) 22%,var(--surface))}
.plane.p2::before{content:"";position:absolute;inset:22px;border-radius:14px;
  background-image:radial-gradient(color-mix(in srgb,var(--accent) 55%,transparent) 2px,transparent 2.5px);background-size:22px 22px}
.plane.p3{top:184px;z-index:2;background:var(--surface)}
.plane.p3::before{content:"";position:absolute;inset:22px;border-radius:14px;
  background-image:linear-gradient(color-mix(in srgb,var(--line) 90%,transparent) 1px,transparent 1px),linear-gradient(90deg,color-mix(in srgb,var(--line) 90%,transparent) 1px,transparent 1px);background-size:26px 26px}
.plane.p4{top:276px;z-index:1;background:color-mix(in srgb,var(--surface) 40%,transparent);border-style:dashed}
.plane.lit{border-color:var(--accent);box-shadow:0 0 0 6px color-mix(in srgb,var(--accent) 22%,transparent),0 40px 50px -34px var(--shadow)}
.plane.p1.lit{box-shadow:0 0 0 6px color-mix(in srgb,var(--accent) 30%,transparent),0 40px 50px -34px var(--shadow)}
@media (max-width:1099px){.stack-art{display:none}}

/* Contact echo: outline planes */
.contact{position:relative;overflow:hidden}
.contact .wrap{position:relative;z-index:1}
.echo{position:absolute;right:-60px;bottom:-40px;width:420px;height:420px;pointer-events:none;opacity:.5}
.echo span{position:absolute;left:50%;width:240px;height:240px;margin-left:-120px;border-radius:28px;
  border:1.5px solid color-mix(in srgb,var(--paper) 30%,transparent);transform:rotateX(58deg) rotateZ(-45deg)}
.echo span:nth-child(1){top:0}.echo span:nth-child(2){top:80px}.echo span:nth-child(3){top:160px}
@media (max-width:760px){.echo{display:none}}

/* Quieter refinements */
header{transition:box-shadow .2s}
header.scrolled{box-shadow:0 1px 0 var(--line),0 10px 30px -20px color-mix(in srgb,var(--ink) 40%,transparent)}
.services>li{transition:background .2s}
.services>li:hover{background:linear-gradient(90deg,color-mix(in srgb,var(--accent) 6%,transparent),transparent 70%)}
.work>li{position:relative;overflow:hidden}
.work>li::before{content:"";position:absolute;left:0;right:0;top:0;height:4px;background:var(--accent);opacity:.85}
.phases li.lit .dot{border-color:var(--accent);background:var(--accent);color:var(--accent-ink)}
@media (prefers-reduced-motion: reduce){.plane{transition:none}}

/* Header */
header{position:sticky;top:env(safe-area-inset-top,0px);z-index:10;background:color-mix(in srgb,var(--paper) 88%,transparent);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.bar{display:flex;align-items:center;justify-content:space-between;height:64px;gap:24px}
.brand{display:inline-flex;align-items:center;gap:10px;font-family:var(--display);font-weight:800;font-size:1.5rem;letter-spacing:-.02em;color:var(--ink);text-decoration:none}
.brand-dot{color:var(--muted);font-weight:500}
.logo{width:38px;height:38px;flex:none;margin:-4px 0}
.logo .logo-s0{stop-color:color-mix(in oklab,var(--logo-b) 0%,var(--logo-a))}
.logo .logo-s13{stop-color:color-mix(in oklab,var(--logo-b) 13%,var(--logo-a))}
.logo .logo-s31{stop-color:color-mix(in oklab,var(--logo-b) 31%,var(--logo-a))}
.logo .logo-s52{stop-color:color-mix(in oklab,var(--logo-b) 52%,var(--logo-a))}
.logo .logo-s69{stop-color:color-mix(in oklab,var(--logo-b) 69%,var(--logo-a))}
.logo .logo-s84{stop-color:color-mix(in oklab,var(--logo-b) 84%,var(--logo-a))}
.logo .logo-s100{stop-color:color-mix(in oklab,var(--logo-b) 100%,var(--logo-a))}
nav ul{display:flex;gap:22px;list-style:none;margin:0;padding:0}
nav a{color:var(--ink);text-decoration:none;font-size:.95rem}
nav a:hover{color:var(--accent)}
.btn{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:0 20px;border-radius:999px;background:var(--accent);color:var(--accent-ink);font-weight:600;text-decoration:none;border:2px solid var(--accent)}
.btn:hover{filter:brightness(1.08)}
.btn.ghost{background:transparent;color:var(--ink);border-color:var(--line)}
.btn.ghost:hover{border-color:var(--ink)}
@media (max-width:860px){nav ul{display:none}}

/* Hero */
.hero{padding-top:72px;padding-bottom:56px}
.who{font-size:1.05rem;color:var(--muted);margin:0 0 12px}
.who .code{color:var(--ink)}
h1{font-family:var(--display);font-weight:800;font-size:clamp(2.6rem,6.5vw,5.2rem);line-height:.98;letter-spacing:-.035em;margin:0 0 24px;max-width:18ch}
.lede{font-size:1.25rem;line-height:1.5;max-width:58ch;margin:0 0 32px}
.cta{display:flex;flex-wrap:wrap;gap:12px}

/* Lifecycle strip: the signature element */
.notice{margin:0 0 32px;max-width:720px;padding:18px 22px;border-left:4px solid var(--accent);background:var(--surface);border-radius:0 12px 12px 0}
.notice p strong{color:var(--ink);font-weight:600}
.notice > strong{display:block;font-family:var(--display);font-size:1.15rem;letter-spacing:-.01em;margin-bottom:4px}
.notice p{margin:0;color:var(--muted);font-size:.98rem}
.notice p+p{margin-top:10px}
.lede strong{font-weight:600}
.lifecycle-title{font-size:1.35rem;margin:0 0 6px;max-width:none}
.lifecycle{margin-top:56px;position:relative}
.lifecycle p{font-size:.95rem;color:var(--muted);margin:0 0 16px;max-width:60ch}
.phases{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(4,1fr);position:relative}
.phases::before{content:"";position:absolute;left:12.5%;right:12.5%;top:21px;height:2px;background:var(--line)}
.phases .pulse{position:absolute;top:16px;left:12.5%;width:12px;height:12px;border-radius:50%;background:var(--accent);opacity:0;pointer-events:none}
.phases li{position:relative;text-align:center}
.phases a{display:flex;flex-direction:column;align-items:center;gap:10px;padding:0 6px 8px;text-decoration:none;color:var(--ink)}
.phases .dot{width:44px;height:44px;border-radius:50%;background:var(--surface);border:2px solid var(--line);display:grid;place-items:center;font-family:var(--mono);font-weight:500;font-size:.95rem;position:relative;z-index:1;transition:border-color .2s,background .2s,color .2s}
.phases a:hover .dot,.phases a:focus-visible .dot{border-color:var(--accent);background:var(--accent);color:var(--accent-ink)}
.phases .ptext{display:flex;flex-direction:column;align-items:center;gap:2px}
.phases .pname{font-size:.9rem;color:var(--muted);line-height:1.35}
.phases .ptarget{font-family:var(--display);font-weight:700;font-size:1.15rem;letter-spacing:-.01em}
@keyframes travel{0%{left:12.5%;opacity:0}6%{opacity:1}94%{opacity:1}100%{left:calc(87.5% - 12px);opacity:0}}
.phases.run .pulse{animation:travel 2.4s cubic-bezier(.6,0,.3,1) .4s 1 both}
@media (prefers-reduced-motion: reduce){.phases.run .pulse{animation:none}}
@media (max-width:760px){
  .phases{grid-template-columns:1fr;gap:4px}
  .phases::before{left:21px;right:auto;top:22px;bottom:22px;width:2px;height:auto}
  .phases .pulse{display:none}
  .phases li{text-align:left}
  .phases a{flex-direction:row;padding:4px 0}
  .phases .ptext{align-items:flex-start}
}

/* Sections */
section{padding:88px 0;border-top:1px solid var(--line)}
h2{font-family:var(--display);font-weight:700;font-size:clamp(1.9rem,3.6vw,2.8rem);line-height:1.05;letter-spacing:-.025em;margin:0 0 20px;max-width:22ch}
h3{font-family:var(--display);font-weight:700;font-size:1.3rem;letter-spacing:-.01em;margin:0 0 6px}
.intro{max-width:62ch;color:var(--muted);margin:0 0 40px;font-size:1.1rem}

/* About */
.about{display:grid;grid-template-columns:1.3fr 1fr;gap:56px;align-items:start}
.about p{max-width:62ch;margin:0 0 16px}
.facts{background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:28px}
.facts dl{margin:0;display:grid;grid-template-columns:auto 1fr;gap:12px 20px}
.facts dt{font-family:var(--display);font-weight:800;font-size:2rem;line-height:1;letter-spacing:-.02em}
.facts dd{margin:0;align-self:center;color:var(--muted);font-size:.95rem;line-height:1.35}
.about .tagline{font-family:var(--display);font-weight:700;font-size:1.25rem;letter-spacing:-.01em;color:var(--muted);margin:-8px 0 20px}
.contrib{margin:0 0 20px;padding-left:20px;max-width:62ch}
.contrib li{margin-bottom:8px}
.contrib li::marker{color:var(--accent)}
.portrait{display:block;width:100%;max-width:340px;height:auto;border-radius:14px;border:1px solid var(--line);margin:0 0 24px}
.links{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
@media (max-width:860px){.about{grid-template-columns:1fr;gap:32px}}

/* Services: a ruled list, not a card grid */
.services{list-style:none;margin:0;padding:0;border-top:2px solid var(--ink)}
.services li{display:grid;grid-template-columns:minmax(200px,1fr) 2fr;gap:32px;padding:28px 0;border-bottom:1px solid var(--line)}
.services li.lead h3{color:var(--accent)}
.services p{margin:0 0 10px;max-width:60ch}
.tags{display:flex;flex-wrap:wrap;gap:6px;margin:0;padding:0;list-style:none}
.tags li{display:block;padding:2px 10px;border:1px solid var(--line);border-radius:6px;font-size:.85rem;color:var(--muted);grid-template-columns:none}
@media (max-width:760px){.services li{grid-template-columns:1fr;gap:8px}}

.fineprint{margin:20px 0 0;max-width:70ch;color:var(--muted);font-size:.95rem}

/* FAQ */
.faq{max-width:780px;border-top:2px solid var(--ink)}
.faq details{border-bottom:1px solid var(--line)}
.faq summary{cursor:pointer;list-style:none;padding:20px 40px 20px 0;position:relative;font-family:var(--display);font-weight:700;font-size:1.15rem;letter-spacing:-.01em}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";position:absolute;right:4px;top:16px;font-family:var(--mono);font-size:1.4rem;color:var(--accent)}
.faq details[open] summary::after{content:"\2212"}
.faq details p{margin:0 0 20px;max-width:62ch;color:var(--muted)}
.faq summary:focus-visible{outline:3px solid var(--accent);outline-offset:3px}

/* Work */
.work{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.work>li{background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:28px;display:flex;flex-direction:column;gap:10px}
.work h3{font-size:1.5rem;letter-spacing:-.02em}
.work p{margin:0 0 12px;color:var(--muted)}
.quote{margin:16px 0 0;padding:16px 0 0;border-top:1px solid var(--line)}
.work .quote p{margin:0 0 8px;color:var(--ink);font-style:italic}
.quote footer{font-size:.9rem;color:var(--muted)}
.quote.is-placeholder{border:1px dashed var(--line);border-radius:10px;padding:14px}
.work .quote.is-placeholder p{color:var(--muted);font-style:normal;font-family:var(--mono);font-size:.85rem}
@media (max-width:860px){.work{grid-template-columns:1fr}}

/* Engagement */
.models{display:grid;grid-template-columns:repeat(3,1fr);gap:0;border:1px solid var(--line);border-radius:14px;overflow:hidden;background:var(--surface)}
.model{padding:28px;border-right:1px solid var(--line);display:flex;flex-direction:column;gap:10px}
.model:last-child{border-right:0}
.models.two{grid-template-columns:repeat(2,1fr)}
.model.featured{background:var(--soft)}
.model .price{font-family:var(--display);font-weight:700;font-size:1.6rem;letter-spacing:-.02em}
.model .price small{font-family:var(--body);font-weight:400;font-size:.9rem;color:var(--muted)}
.model ul{margin:0;padding-left:18px;color:var(--muted);font-size:.97rem}
.model p{margin:0}
@media (max-width:860px){.models,.models.two{grid-template-columns:1fr}.model{border-right:0;border-bottom:1px solid var(--line)}.model:last-child{border-bottom:0}}

/* Process: a real sequence, so numbers are earned */
.steps{list-style:none;margin:0;padding:0;counter-reset:s;display:grid;grid-template-columns:repeat(4,1fr);gap:28px}
.steps li{counter-increment:s}
.steps li::before{content:counter(s);display:grid;place-items:center;width:40px;height:40px;border-radius:50%;border:2px solid var(--ink);font-family:var(--mono);font-weight:500;margin-bottom:14px}
.steps p{margin:0;color:var(--muted);font-size:.98rem}
@media (max-width:860px){.steps{grid-template-columns:1fr 1fr}}
@media (max-width:520px){.steps{grid-template-columns:1fr}}

/* Contact */
.contact{background:var(--ink);color:var(--paper);border-top:0}
.contact h2{color:var(--paper)}
.contact .intro{color:color-mix(in srgb,var(--paper) 80%,var(--ink))}
.contact .btn{background:var(--paper);color:var(--ink);border-color:var(--paper)}
.contact .btn.ghost{background:transparent;color:var(--paper);border-color:color-mix(in srgb,var(--paper) 45%,var(--ink))}
.contact a:not(.btn){color:var(--paper)}
.template{margin:32px 0 0;padding:20px 24px;border:1px solid color-mix(in srgb,var(--paper) 25%,var(--ink));border-radius:12px;font-family:var(--mono);font-size:.9rem;line-height:1.8;max-width:560px;overflow-x:auto;white-space:pre}
.sponsor{margin-top:40px;padding-top:28px;border-top:1px solid color-mix(in srgb,var(--paper) 22%,var(--ink));display:flex;flex-wrap:wrap;align-items:center;gap:16px 32px;max-width:860px}
.sponsor p{margin:0;flex:1 1 380px;color:color-mix(in srgb,var(--paper) 80%,var(--ink))}
.sponsor strong{color:var(--paper)}
.contact .direct{margin:16px 0 0}
.contact .direct a{font-weight:600}
.avail{margin-top:28px;font-size:.95rem;max-width:62ch;color:color-mix(in srgb,var(--paper) 80%,var(--ink))}

footer{padding:32px 0;font-size:.9rem;color:var(--muted)}
footer .wrap{display:flex;flex-wrap:wrap;justify-content:space-between;gap:16px}
footer a{color:var(--muted)}

/* Legal pages (Impressum, Datenschutz) */
.legal{padding:64px 0 88px;max-width:760px}
.legal h1{font-family:var(--display);font-weight:800;font-size:clamp(2rem,5vw,3.2rem);line-height:1.02;letter-spacing:-.03em;margin:0 0 12px;max-width:none}
.legal .lang{color:var(--muted);font-size:.95rem;margin:0 0 40px}
.legal h2{font-size:clamp(1.3rem,2.6vw,1.7rem);margin:40px 0 12px;max-width:none}
.legal h3{font-size:1.1rem;margin:24px 0 6px}
.legal p,.legal li{max-width:68ch}
.legal p{margin:0 0 14px}
.legal ul{padding-left:20px;margin:0 0 14px}
.legal address{font-style:normal;margin:0 0 14px;line-height:1.6}
.legal .back{display:inline-block;margin-top:40px}