:root {
  color-scheme: dark;
  --bg: #0b0d10;
  --panel: #11151a;
  --panel-2: #151a20;
  --text: #f4f6f8;
  --muted: #98a3ae;
  --soft: #cbd2d9;
  --line: #252c34;
  --line-strong: #35404b;
  --accent: #f4f6f8;
  --max: 1080px;
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  background: var(--bg);
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at 82% 8%, rgba(255,255,255,.035), transparent 30rem),
    var(--bg);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont,
               "Segoe UI", sans-serif;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; }

.shell {
  width: min(var(--max), calc(100% - 40px));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(14px);
  background: rgba(11, 13, 16, .82);
  border-bottom: 1px solid rgba(37,44,52,.8);
}

.nav {
  min-height: 74px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
}

.brand {
  display: inline-flex;
  align-items: baseline;
  gap: 10px;
  text-decoration: none;
  white-space: nowrap;
}

.brand-mark {
  font-size: 1.6rem;
  font-weight: 800;
  letter-spacing: -.05em;
}

.brand-name {
  color: var(--muted);
  font-size: .72rem;
  font-weight: 650;
  letter-spacing: .12em;
  text-transform: uppercase;
}

.nav-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 18px;
}

.nav-links a {
  color: var(--muted);
  text-decoration: none;
  font-size: .88rem;
  font-weight: 550;
}

.nav-links a:hover,
.nav-links a[aria-current="page"] {
  color: var(--text);
}

.hero {
  padding: 112px 0 86px;
}

.eyebrow {
  margin: 0 0 18px;
  color: var(--muted);
  font-size: .78rem;
  font-weight: 700;
  letter-spacing: .13em;
  text-transform: uppercase;
}

h1, h2, h3, p { margin-top: 0; }

h1 {
  max-width: 900px;
  margin-bottom: 28px;
  font-size: clamp(3rem, 8vw, 6.5rem);
  line-height: .96;
  letter-spacing: -.06em;
  font-weight: 670;
}

.page-hero h1 {
  max-width: 820px;
  font-size: clamp(2.7rem, 7vw, 5.3rem);
}

.lede {
  max-width: 760px;
  margin-bottom: 0;
  color: var(--muted);
  font-size: clamp(1.06rem, 2.2vw, 1.28rem);
  line-height: 1.7;
}

.credibility {
  max-width: 760px;
  margin: 24px 0 0;
  color: var(--soft);
  font-size: .98rem;
  line-height: 1.65;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 34px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 17px;
  border: 1px solid var(--line-strong);
  border-radius: 9px;
  color: var(--text);
  text-decoration: none;
  font-size: .9rem;
  font-weight: 650;
  transition: transform .15s ease, border-color .15s ease, background .15s ease;
}

.button:hover {
  transform: translateY(-1px);
  border-color: #66717c;
  background: rgba(255,255,255,.025);
}

.button.primary {
  background: var(--text);
  color: var(--bg);
  border-color: var(--text);
}

.section {
  padding: 78px 0;
  border-top: 1px solid var(--line);
}

.section.compact { padding: 56px 0; }

.section-head {
  display: grid;
  grid-template-columns: minmax(160px, .42fr) 1fr;
  gap: 50px;
  align-items: start;
  margin-bottom: 34px;
}

.section-head h2 {
  margin: 0;
  font-size: clamp(1.65rem, 3.3vw, 2.6rem);
  letter-spacing: -.035em;
  line-height: 1.05;
}

.section-head p {
  margin: 0;
  color: var(--muted);
  line-height: 1.7;
}

.grid {
  display: grid;
  gap: 16px;
}

.grid.two { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid.three { grid-template-columns: repeat(3, minmax(0, 1fr)); }

.card {
  display: block;
  min-height: 100%;
  padding: 26px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: rgba(17,21,26,.72);
  text-decoration: none;
}

a.card {
  transition: transform .15s ease, border-color .15s ease, background .15s ease;
}

a.card:hover {
  transform: translateY(-2px);
  border-color: var(--line-strong);
  background: var(--panel-2);
}

.card .label {
  display: inline-block;
  margin-bottom: 18px;
  color: var(--muted);
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
}

.card h3 {
  margin-bottom: 10px;
  font-size: 1.25rem;
  letter-spacing: -.025em;
}

.card p {
  margin: 0;
  color: var(--muted);
  line-height: 1.65;
}

.card .linkline {
  display: inline-block;
  margin-top: 22px;
  color: var(--soft);
  font-size: .9rem;
  font-weight: 650;
}

.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
  margin-top: 28px;
}

.tag {
  padding: 7px 10px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--soft);
  font-size: .82rem;
}

.content {
  max-width: 820px;
}

.content h2 {
  margin-top: 52px;
  margin-bottom: 16px;
  font-size: 1.8rem;
  letter-spacing: -.03em;
}

.content h3 {
  margin-top: 34px;
  margin-bottom: 12px;
  font-size: 1.2rem;
}

.content p,
.content li {
  color: var(--muted);
  line-height: 1.72;
}

.content ul {
  padding-left: 1.25rem;
}

.content strong {
  color: var(--text);
  font-weight: 650;
}

.status {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 18px;
  color: var(--soft);
  font-size: .84rem;
  font-weight: 650;
}

.status::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: currentColor;
  opacity: .65;
}

.price-note {
  margin-top: 20px;
  padding: 16px 18px;
  border-left: 2px solid var(--line-strong);
  color: var(--muted);
  line-height: 1.65;
}

.contact-block {
  max-width: 720px;
  padding: 30px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--panel);
}

.contact-mail {
  display: inline-block;
  margin-top: 8px;
  font-size: clamp(1.35rem, 4vw, 2.15rem);
  font-weight: 650;
  letter-spacing: -.035em;
  text-decoration: none;
  border-bottom: 1px solid var(--line-strong);
}

.site-footer {
  margin-top: 60px;
  border-top: 1px solid var(--line);
}

.footer-inner {
  min-height: 100px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  color: #707b86;
  font-size: .78rem;
}

.footer-links {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.footer-links a {
  color: #8d98a3;
  text-decoration: none;
}

@media (max-width: 760px) {
  .shell { width: min(100% - 28px, var(--max)); }
  .nav { align-items: flex-start; padding: 18px 0; }
  .nav-links { gap: 11px 14px; }
  .hero { padding: 82px 0 68px; }
  .section { padding: 60px 0; }
  .section-head { grid-template-columns: 1fr; gap: 14px; }
  .grid.two, .grid.three { grid-template-columns: 1fr; }
  .footer-inner { align-items: flex-start; flex-direction: column; padding: 28px 0; }
}

@media (max-width: 560px) {
  .nav { flex-direction: column; gap: 14px; }
  .nav-links { justify-content: flex-start; }
  .brand-mark { font-size: 1.45rem; }
  h1 { font-size: clamp(2.65rem, 15vw, 4.4rem); }
}
/* Compact, accessible language information without duplicating the site. */
.language-note {
  max-width: 760px;
  margin: 18px 0 0;
  color: var(--soft);
  line-height: 1.65;
  font-size: .97rem;
}
.language-title {
  margin: 34px 0 12px;
  font-size: 1.25rem;
  letter-spacing: -.02em;
}
.language-note-de {
  max-width: 760px;
  color: var(--soft);
  line-height: 1.75;
}
.footer-language { color: var(--muted); }

/* Minimal legal pages, readable on mobile and in assistive technology. */
.legal-hero { padding-bottom: 50px; }
.legal-content { max-width: 760px; }
.legal-content h2 { font-size: 1.35rem; margin-top: 28px; margin-bottom: 12px; }
.legal-content p { line-height: 1.75; overflow-wrap: anywhere; }
.legal-content a { text-underline-offset: .2em; }


/* A welcoming, bilingual 404 page. Intentionally not indexable. */
.not-found { padding-top: clamp(62px, 8vw, 116px); padding-bottom: clamp(72px, 10vw, 140px); }
.not-found-layout { display: grid; grid-template-columns: minmax(0, 1.35fr) minmax(265px, .65fr); gap: clamp(36px, 5vw, 84px); align-items: center; }
.not-found .eyebrow { display: flex; align-items: center; gap: 11px; }
.not-found-status-dot { width: 7px; height: 7px; border-radius: 50%; background: #cad4dd; box-shadow: 0 0 0 5px rgba(202,212,221,.07); }
.not-found h1 { max-width: 760px; font-size: clamp(2.75rem, 5.4vw, 5.15rem); line-height: 1.04; letter-spacing: -.055em; }
.not-found h1 span { color: #98a3ae; }
.not-found .lede { max-width: 610px; font-size: 1.1rem; }
.not-found-de { max-width: 600px; margin-top: 30px; padding: 18px 21px; border-left: 2px solid #66717c; border-radius: 0 10px 10px 0; background: rgba(255,255,255,.025); }
.not-found-de-label { margin: 0 0 8px; font-size: .69rem; font-weight: 700; text-transform: uppercase; letter-spacing: .12em; color: #a6b0bb; }
.not-found-de p:last-child { margin: 0; line-height: 1.6; color: #cbd2d9; }
.not-found-de strong { color: #f4f6f8; }
.not-found-actions { margin-top: 29px; }
.not-found-footnote { margin: 17px 0 0; color: #98a3ae; font-size: .83rem; }
.not-found-visual { border: 1px solid #35404b; border-radius: 14px; background: linear-gradient(155deg, #171e25, #0f1317 75%); box-shadow: 0 30px 70px rgba(0,0,0,.18); overflow: hidden; transform: translateY(2px); }
.not-found-visual-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 15px 17px; border-bottom: 1px solid #252c34; font-size: .69rem; color: #98a3ae; font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace; }
.not-found-visual-dots { display: flex; gap: 5px; }
.not-found-visual-dots i { display: block; width: 7px; height: 7px; border-radius: 50%; background: #53606c; }
.not-found-visual-body { padding: 33px 22px 43px; color: #d6dde4; font: 500 .86rem/1.95 ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace; }
.not-found-symbol { color: #8fa2b4; }
.not-found-error { color: #a6b0bb; padding-left: 17px; }
.not-found-success { color: #e2eaf1; padding-left: 17px; }
@media (max-width: 840px) { .not-found-layout { grid-template-columns: 1fr; } .not-found-visual { max-width: 510px; } }
@media (max-width: 560px) { .not-found { padding-top: 65px; } .not-found h1 { font-size: clamp(2.6rem, 12vw, 4rem); } .not-found-de { padding: 15px 16px; } }

/* Hash Lab: secondary brand easter egg, readable without JavaScript. */
.hash-teaser { display:grid; grid-template-columns:minmax(0,1.08fr) minmax(0,.92fr); align-items:center; gap:clamp(28px,5vw,70px); }
.hash-teaser h2, .hash-bottom h2 {font-size:clamp(1.65rem,3.3vw,2.6rem); letter-spacing:-.035em; line-height:1.08; margin-bottom:18px;}
.hash-teaser p:not(.eyebrow), .hash-bottom p:not(.eyebrow) {color:var(--muted); line-height:1.75; max-width:590px;}
.hash-teaser .linkline {display:inline-block; margin-top:12px; font-weight:650; text-underline-offset:.25em;}
.hash-teaser-terminal {min-width:0; padding:27px; background:linear-gradient(145deg,#171e25,#101318); border:1px solid var(--line-strong); border-radius:14px; display:flex; flex-direction:column; gap:17px; box-shadow:0 20px 50px rgba(0,0,0,.13);}
.hash-teaser-terminal-label,.hash-teaser-terminal-foot {font:500 .78rem/1.5 ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace; color:var(--muted);}
.hash-teaser-terminal code {color:var(--text); font:600 clamp(.83rem,1.9vw,1.02rem)/1.7 ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace; overflow-wrap:anywhere;}
.hash-hero {padding-bottom:75px;}
.hash-hero h1 {font-size:clamp(2.9rem,6.3vw,5.75rem); max-width:950px;}
.hash-hero .lede code {color:var(--text); background:rgba(255,255,255,.07); padding:1px 5px; border-radius:4px; font-size:.93em;}
.hash-intro-note {font-size:.87rem; color:var(--soft); margin-top:22px;}
.hash-lab-section {padding-top:55px;}
.hash-workbench {padding:clamp(21px,4vw,34px); background:linear-gradient(120deg,#192129,#11161c 78%); border:1px solid var(--line-strong); border-radius:16px;}
.hash-workbench-header {display:flex; flex-wrap:wrap; justify-content:space-between; align-items:center; gap:24px;}
.hash-workbench-header .eyebrow {margin:0 0 9px;}
.hash-workbench h2 {font-size:clamp(1.5rem,3vw,2rem); letter-spacing:-.03em; margin:0;}
.hash-preset-switch {display:flex; padding:4px; gap:4px; border:1px solid #394550; border-radius:10px; background:rgba(0,0,0,.17);}
.hash-preset,.hash-copy {font:650 .88rem/1.5 ui-sans-serif,system-ui,-apple-system,sans-serif; cursor:pointer;}
.hash-preset {min-width:70px; min-height:42px; border:1px solid transparent; border-radius:7px; color:var(--soft); background:transparent;}
.hash-preset:hover {background:rgba(255,255,255,.05);}
.hash-preset[aria-pressed="true"] {background:var(--text); border-color:var(--text); color:var(--bg);}
.hash-input-line {display:flex; align-items:baseline; gap:16px; margin-top:30px; font:600 clamp(2.5rem,7vw,5.5rem)/1.1 ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace; letter-spacing:-.06em;}
.hash-input-line>span:first-child {font-size:.56em; color:#91a1b0;}
.hash-input-line code {color:var(--text);}
.hash-cursor {color:#a5b3c0; animation:hash-cursor-blink 1.2s steps(2,start) infinite; font-size:.7em;}
.hash-bytes {margin:18px 0 0; color:var(--muted); font-size:.82rem;}
.hash-bytes code {color:var(--soft); margin-left:6px;}
.hash-results {display:grid; gap:14px; margin-top:20px;}
.hash-result {min-width:0; padding:clamp(20px,3vw,29px); background:rgba(17,21,26,.9); border:1px solid var(--line); border-radius:13px;}
.hash-result-heading {display:flex; gap:18px; justify-content:space-between; align-items:center; margin-bottom:17px;}
.hash-result-kicker {color:var(--muted); font-size:.7rem; text-transform:uppercase; letter-spacing:.12em; font-weight:700; margin:0 0 5px;}
.hash-result h3 {font-size:1.12rem; letter-spacing:-.01em; margin:0;}
.hash-copy {background:transparent; color:var(--soft); border:1px solid var(--line-strong); border-radius:7px; min-height:39px; padding:6px 12px; flex:none;}
.hash-copy:hover {border-color:#8293a3; background:rgba(255,255,255,.045);}
.hash-digest {display:block; color:#e7edf3; font:500 clamp(.77rem,1.8vw,.95rem)/1.85 ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace; overflow-wrap:anywhere; user-select:all;}
.hash-result-meta {margin:14px 0 0; color:var(--muted); font-size:.8rem; line-height:1.6;}
.hash-explainer {max-width:860px; margin:25px 0 0; color:var(--muted); font-size:.85rem; line-height:1.7;}
.hash-live {min-height:1.35em; color:var(--soft); margin:14px 0 0; font-size:.85rem;}
.hash-bottom {display:flex; justify-content:space-between; align-items:center; gap:36px;}
.hash-bottom .button {flex:none;}
.not-found-footnote a {color:var(--soft); text-underline-offset:.25em;}
@keyframes hash-cursor-blink {to {opacity:0;}}
@media (max-width:760px) {.hash-teaser {grid-template-columns:1fr; gap:25px;} .hash-bottom {flex-direction:column; align-items:flex-start; gap:14px;} .hash-hero {padding-bottom:58px;}}
@media (max-width:560px) {.hash-workbench-header {align-items:flex-start;} .hash-preset-switch {width:100%;} .hash-preset {flex:1;} .hash-result-heading {align-items:flex-start;} .hash-teaser-terminal {padding:21px;}}
@media (prefers-reduced-motion:reduce) {.hash-cursor {animation:none;}}

/* Selected professional experience: high-level examples, not client testimonials. */
.experience-list { display: grid; gap: 16px; margin: 22px 0 24px; }
.experience-card { padding: 23px 25px; border: 1px solid var(--line); border-radius: 12px; background: var(--panel); }
.experience-card h3 { margin: 7px 0 10px; font-size: 1.16rem; }
.experience-card p { margin-bottom: 0; }

/* Quiet SHA-256 / SHA-512 / SHA3-512 pattern at the far desktop edge.
   Decorative only: genuine precomputed 113# digests, no JS, no network requests.
   Hidden on smaller screens to preserve readability and available space. */
@media (min-width: 1200px) {
  body::before {
    content: "";
    position: fixed;
    top: 90px;
    right: 0;
    bottom: 0;
    width: 265px;
    background: url("/hash-watermark.svg") right top / 265px auto repeat-y;
    opacity: .13;
    pointer-events: none;
    user-select: none;
    z-index: 0;
    -webkit-mask-image: linear-gradient(to right, transparent, black 30%);
    mask-image: linear-gradient(to right, transparent, black 30%);
  }
  body > main, body > footer {
    position: relative;
    z-index: 1;
  }
}