/* Determa — Applied AI Systems
   Brand kit discipline: ink + paper only. No gradients, outlines, shadows or effects. */

:root {
  --ink: #111111;
  --paper: #ffffff;
  --ink-70: #454545;
  --ink-50: #6b6b6b;
  --rule: #e4e4e4;
  --wash: #f6f6f6;
  --maxw: 1080px;
  --font: Inter, "Helvetica Neue", Arial, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font);
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

/* German compounds (Unternehmensprozesse, Wirtschafts-Identifikationsnummer)
   are wider than a phone at display sizes — let them break and hyphenate. */
h1, h2, h3, .statement, .lede, .legal {
  overflow-wrap: break-word;
  hyphens: auto;
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--ink); }

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }

/* ---------- Header ---------- */

.site-head {
  border-bottom: 1px solid var(--rule);
  position: sticky;
  top: 0;
  background: var(--paper);
  z-index: 20;
}
.head-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 18px 24px;
  max-width: var(--maxw);
  margin: 0 auto;
}
.brand { display: flex; align-items: center; gap: 14px; text-decoration: none; }
.brand img { width: 132px; }
.brand span {
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-50);
  border-left: 1px solid var(--rule);
  padding-left: 14px;
  white-space: nowrap;
}
.head-actions { display: flex; align-items: center; gap: 18px; }
.lang {
  font-size: 13px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-50);
  text-decoration: none;
}
.lang:hover { color: var(--ink); }

/* ---------- Buttons ---------- */

.btn {
  display: inline-block;
  font: inherit;
  font-size: 15px;
  font-weight: 500;
  line-height: 1;
  padding: 14px 22px;
  border: 1px solid var(--ink);
  background: var(--ink);
  color: var(--paper);
  text-decoration: none;
  cursor: pointer;
  transition: background 0.15s ease, color 0.15s ease;
}
.btn:hover { background: var(--paper); color: var(--ink); }
.btn-ghost { background: var(--paper); color: var(--ink); }
.btn-ghost:hover { background: var(--ink); color: var(--paper); }
.btn-sm { padding: 11px 17px; font-size: 14px; }

/* ---------- Hero ---------- */

.hero { padding: 92px 0 76px; }
.eyebrow {
  font-size: 12.5px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ink-50);
  margin: 0 0 26px;
}
h1 {
  font-size: clamp(34px, 5.4vw, 60px);
  line-height: 1.08;
  letter-spacing: -0.025em;
  font-weight: 600;
  margin: 0 0 26px;
  max-width: 20ch;
}
.lede {
  font-size: clamp(18px, 2.1vw, 21px);
  line-height: 1.55;
  color: var(--ink-70);
  margin: 0 0 36px;
  max-width: 58ch;
}
.hero-cta { display: flex; flex-wrap: wrap; align-items: center; gap: 14px 18px; }
.cta-note { font-size: 13.5px; color: var(--ink-50); }

.bridge {
  margin-top: 52px;
  padding-top: 26px;
  border-top: 1px solid var(--rule);
  display: flex;
  flex-wrap: wrap;
  gap: 8px 14px;
  align-items: baseline;
  font-size: 14.5px;
  color: var(--ink-70);
}
.bridge strong { color: var(--ink); font-weight: 600; }
.bridge .sep { color: var(--rule); }

/* ---------- Sections ---------- */

/* scroll-margin keeps anchor targets clear of the sticky header. */
section { border-top: 1px solid var(--rule); scroll-margin-top: 84px; }
/* padding-top/bottom only — a shorthand here would wipe .wrap's side gutters. */
.sec { padding-top: 76px; padding-bottom: 76px; }
.sec-label {
  font-size: 12.5px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ink-50);
  margin: 0 0 22px;
}
h2 {
  font-size: clamp(26px, 3.4vw, 37px);
  line-height: 1.15;
  letter-spacing: -0.02em;
  font-weight: 600;
  margin: 0 0 22px;
  max-width: 26ch;
}
h3 { font-size: 19px; line-height: 1.3; font-weight: 600; margin: 0 0 10px; letter-spacing: -0.01em; }
p { margin: 0 0 18px; }
p:last-child { margin-bottom: 0; }
.measure { max-width: 62ch; color: var(--ink-70); }
.measure strong { color: var(--ink); font-weight: 600; }

.statement {
  font-size: clamp(21px, 2.7vw, 27px);
  line-height: 1.4;
  letter-spacing: -0.015em;
  font-weight: 500;
  color: var(--ink);
  max-width: 34ch;
  margin: 0;
  padding-left: 22px;
  border-left: 2px solid var(--ink);
}

/* ---------- Offers ---------- */

.offers { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--rule); margin-top: 44px; }
.offer { background: var(--paper); padding: 30px 26px 32px; display: flex; flex-direction: column; }
.offer-no {
  font-size: 12.5px;
  letter-spacing: 0.16em;
  color: var(--ink-50);
  margin: 0 0 18px;
}
.offer-for { font-size: 14.5px; color: var(--ink-70); margin: 0 0 20px; }
.offer h4 {
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-50);
  font-weight: 500;
  margin: 0 0 12px;
}
.offer ul { list-style: none; margin: 0; padding: 0; font-size: 15px; }
.offer li { padding: 7px 0 7px 18px; position: relative; color: var(--ink-70); line-height: 1.45; }
.offer li::before { content: ""; position: absolute; left: 0; top: 15px; width: 7px; height: 1px; background: var(--ink); }

/* ---------- Audience ---------- */

.cols { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: start; }
.checks { list-style: none; margin: 0; padding: 0; }
.checks li {
  padding: 14px 0 14px 30px;
  border-top: 1px solid var(--rule);
  position: relative;
  color: var(--ink-70);
  font-size: 16px;
}
.checks li:first-child { border-top: 0; padding-top: 0; }
.checks li:first-child::before { top: 4px; }
.checks li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 18px;
  width: 11px;
  height: 6px;
  border-left: 1.5px solid var(--ink);
  border-bottom: 1.5px solid var(--ink);
  transform: rotate(-45deg);
}
.notfor { margin-top: 34px; padding: 22px 24px; background: var(--wash); font-size: 15px; color: var(--ink-70); }
.notfor strong { color: var(--ink); }

/* ---------- Founder ---------- */

.founder { display: grid; grid-template-columns: 220px 1fr; gap: 48px; align-items: start; }
.founder-photo { width: 220px; }
.founder-photo img { width: 100%; filter: grayscale(1); }
.founder-photo figcaption { font-size: 13.5px; color: var(--ink-50); margin-top: 14px; line-height: 1.45; }
.proof { list-style: none; margin: 30px 0 0; padding: 0; display: grid; gap: 1px; background: var(--rule); }
.proof li { background: var(--paper); padding: 16px 0 16px 0; }
.proof-link {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 20px;
  text-decoration: none;
  font-size: 16px;
}
.proof-link span:first-child { font-weight: 500; }
.proof-link .arrow { color: var(--ink-50); font-size: 14px; white-space: nowrap; }
.proof-link:hover .arrow { color: var(--ink); }
.proof-note { font-size: 14px; color: var(--ink-50); margin-top: 18px; }

/* ---------- Meeting ---------- */

.meeting { background: var(--ink); color: var(--paper); border-top: 0; }
.meeting .sec-label { color: rgba(255, 255, 255, 0.55); }
.meeting h2 { color: var(--paper); }
.meeting .measure { color: rgba(255, 255, 255, 0.72); }
.meeting .btn { background: var(--paper); color: var(--ink); border-color: var(--paper); }
.meeting .btn:hover { background: var(--ink); color: var(--paper); }
.meeting .cta-note { color: rgba(255, 255, 255, 0.55); }
.cal-mount { margin-top: 28px; background: var(--paper); min-height: 620px; }

/* ---------- Footer ---------- */

.site-foot { border-top: 1px solid var(--rule); padding: 44px 0 56px; font-size: 14px; color: var(--ink-50); }
.foot-row { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 26px 40px; }
.legal { max-width: 46ch; line-height: 1.6; }
.legal strong { color: var(--ink); font-weight: 600; }
.foot-links { display: flex; flex-wrap: wrap; gap: 8px 20px; align-items: flex-start; }
.foot-links a { color: var(--ink-50); text-decoration: none; }
.foot-links a:hover { color: var(--ink); text-decoration: underline; }

/* ---------- Responsive ---------- */

@media (max-width: 900px) {
  .offers { grid-template-columns: 1fr; }
  .cols { grid-template-columns: 1fr; gap: 40px; }
  .founder { grid-template-columns: 1fr; gap: 30px; }
  .founder-photo { width: 168px; }
}

@media (max-width: 620px) {
  body { font-size: 16px; }
  .hero { padding: 62px 0 54px; }
  .sec { padding-top: 56px; padding-bottom: 56px; }
  .head-row { padding: 14px 20px; gap: 12px; }
  .wrap { padding: 0 20px; }
  .brand { min-width: 0; }
  .brand img { width: 104px; }
  .brand span { display: none; }
  .head-actions { gap: 12px; }
  .btn-sm { padding: 10px 13px; font-size: 13px; }
  section { scroll-margin-top: 68px; }
  h1 { max-width: none; }
  .lede, .measure, .statement { max-width: none; }
  .bridge { margin-top: 40px; flex-direction: column; gap: 3px; }
  .bridge .sep { display: none; }
  .proof-link { flex-direction: column; gap: 3px; }
  .founder-photo { width: 140px; }
  /* Drop the card gutter so offers align with the surrounding body text. */
  .offers { margin-top: 34px; }
  .offer { padding: 28px 0 30px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition: none !important; }
}