:root {
  --ink: #17324d;
  --muted: #617385;
  --line: #d8e1e8;
  --paper: #f7f9fa;
  --white: #ffffff;
  --blue: #1f4e79;
  --blue-deep: #173f63;
  --green: #4e7c59;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: Arial, Helvetica, sans-serif;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
a:focus-visible {
  outline: 3px solid #78a4c5;
  outline-offset: 4px;
}

.site-header {
  align-items: center;
  border-bottom: 1px solid var(--line);
  display: flex;
  justify-content: space-between;
  margin: 0 auto;
  max-width: 1320px;
  min-height: 80px;
  padding: 0 36px;
}
.wordmark {
  color: var(--blue);
  font-size: 17px;
  font-weight: 700;
  letter-spacing: -.02em;
}
.header-actions { align-items: center; display: flex; gap: 24px; }
nav { align-items: center; display: flex; font-size: 14px; gap: 30px; }
nav a:not(.nav-contact):hover { color: var(--blue); }
.nav-contact { border: 1px solid var(--ink); padding: 10px 16px; }
.nav-contact:hover { background: var(--ink); color: var(--white); }
.language-switch {
  align-items: center;
  border-left: 1px solid var(--line);
  display: flex;
  font-size: 11px;
  font-weight: 700;
  gap: 9px;
  letter-spacing: .08em;
  padding-left: 24px;
}
.language-switch a { color: var(--muted); }
.language-switch a:hover { color: var(--blue); }
.language-switch [aria-current="page"] { color: var(--blue); }

.hero, .solutions, .implementation, .contact, footer {
  margin: 0 auto;
  max-width: 1320px;
  padding-left: 36px;
  padding-right: 36px;
}
.hero { padding-bottom: 0; padding-top: 92px; }
.eyebrow, .section-index, .card-topline {
  color: var(--blue);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .13em;
  text-transform: uppercase;
}
h1 {
  font-size: clamp(48px, 7vw, 96px);
  font-weight: 500;
  letter-spacing: -.055em;
  line-height: .98;
  margin: 28px 0 34px;
  max-width: 1100px;
}
.hero-copy {
  color: var(--muted);
  font-size: 20px;
  line-height: 1.55;
  margin: 0;
  max-width: 760px;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 38px; }
.button {
  align-items: center;
  display: inline-flex;
  font-size: 15px;
  font-weight: 700;
  justify-content: center;
  min-height: 52px;
  padding: 0 22px;
  transition: background-color .15s ease, color .15s ease, border-color .15s ease;
}
.button-primary { background: var(--blue); border: 1px solid var(--blue); color: var(--white); }
.button-primary:hover { background: var(--blue-deep); }
.button-secondary { border: 1px solid var(--line); color: var(--ink); }
.button-secondary:hover { border-color: var(--ink); }

.scope-strip {
  border-bottom: 1px solid var(--line);
  border-top: 1px solid var(--line);
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  margin: 90px 0 0;
}
.scope-strip div { display: grid; gap: 14px; grid-template-columns: 28px 1fr; padding: 25px 22px; }
.scope-strip div + div { border-left: 1px solid var(--line); }
.scope-strip dt { color: var(--green); font-size: 12px; font-weight: 700; }
.scope-strip dd { font-size: 14px; margin: 0; }

.solutions { padding-bottom: 110px; padding-top: 120px; }
.section-heading {
  display: grid;
  gap: 40px;
  grid-template-columns: minmax(150px, .45fr) 1.55fr;
  margin-bottom: 48px;
}
.section-heading h2 {
  font-size: clamp(34px, 4.5vw, 60px);
  font-weight: 500;
  letter-spacing: -.04em;
  line-height: 1.05;
  margin: 0;
}
.section-heading div > p {
  color: var(--muted);
  font-size: 17px;
  line-height: 1.6;
  margin: 20px 0 0;
  max-width: 640px;
}
.solution-grid {
  display: grid;
  gap: 18px;
  grid-template-columns: repeat(2, 1fr);
  margin-left: calc(27.5% + 20px);
}
.solution-card { border: 1px solid var(--line); min-height: 550px; padding: 30px; }
.congress-card { background: var(--blue); border-color: var(--blue); color: var(--white); }
.journal-card { background: var(--white); }
.card-topline { display: flex; justify-content: space-between; }
.congress-card .card-topline { color: #c8dbe9; }
.solution-card h3 {
  font-size: clamp(30px, 3vw, 42px);
  font-weight: 500;
  letter-spacing: -.035em;
  line-height: 1.08;
  margin: 66px 0 22px;
}
.card-summary { color: var(--muted); font-size: 16px; line-height: 1.6; max-width: 460px; }
.congress-card .card-summary { color: #d9e5ed; }
.solution-card ul { list-style: none; margin: 50px 0 0; padding: 0; }
.solution-card li {
  border-top: 1px solid var(--line);
  font-size: 14px;
  line-height: 1.45;
  padding: 13px 0 13px 22px;
  position: relative;
}
.congress-card li { border-color: rgba(255,255,255,.24); }
.solution-card li::before {
  color: var(--green);
  content: "·";
  font-size: 24px;
  left: 2px;
  line-height: 14px;
  position: absolute;
}
.congress-card li::before { color: #a8c6ae; }

.live-examples {
  border-top: 1px solid var(--line);
  display: grid;
  gap: 40px;
  grid-template-columns: minmax(150px, .45fr) 1.55fr;
  margin-top: 56px;
  padding-top: 24px;
}
.live-examples .section-index { margin: 5px 0 0; }
.example-links { display: grid; grid-template-columns: repeat(2, 1fr); }
.example-links a {
  align-items: flex-start;
  display: flex;
  gap: 20px;
  justify-content: space-between;
  padding: 4px 24px 8px 0;
}
.example-links a + a { border-left: 1px solid var(--line); padding-left: 24px; }
.example-links a:hover strong { color: var(--blue); }
.example-links strong { display: block; font-size: 15px; font-weight: 700; }
.example-links small { color: var(--muted); display: block; font-size: 12px; margin-top: 6px; }
.example-links a > span:last-child { color: var(--green); font-size: 15px; }

.implementation {
  background: var(--ink);
  color: var(--white);
  max-width: none;
  padding-bottom: 110px;
  padding-top: 110px;
}
.implementation > * { margin-left: auto; margin-right: auto; max-width: 1248px; }
.implementation .section-index { color: #9fbea6; }
.light-heading div > p { color: #b9c6d1; }
.process-list { list-style: none; margin-bottom: 0; margin-top: 78px; padding: 0; }
.process-list li {
  border-top: 1px solid rgba(255,255,255,.2);
  display: grid;
  gap: 40px;
  grid-template-columns: minmax(150px, .45fr) 1.55fr;
  padding: 31px 0 34px;
}
.process-list > li > span { color: #9fbea6; font-size: 12px; font-weight: 700; }
.process-list h3 { font-size: 25px; font-weight: 500; margin: 0 0 10px; }
.process-list p { color: #b9c6d1; line-height: 1.6; margin: 0; max-width: 660px; }

.contact {
  display: grid;
  gap: 40px;
  grid-template-columns: minmax(150px, .45fr) 1.55fr;
  padding-bottom: 130px;
  padding-top: 130px;
}
.contact-content h2 {
  font-size: clamp(42px, 5.3vw, 72px);
  font-weight: 500;
  letter-spacing: -.045em;
  line-height: 1.02;
  margin: 0;
  max-width: 850px;
}
.contact-content > p {
  color: var(--muted);
  font-size: 18px;
  line-height: 1.65;
  margin: 28px 0 34px;
  max-width: 660px;
}
.contact-actions { display: flex; flex-wrap: wrap; gap: 12px; }
.contact-content small {
  color: var(--muted);
  display: block;
  font-size: 12px;
  line-height: 1.55;
  margin-top: 15px;
  max-width: 550px;
}

footer {
  border-top: 1px solid var(--line);
  color: var(--muted);
  display: flex;
  font-size: 12px;
  justify-content: space-between;
  padding-bottom: 34px;
  padding-top: 34px;
}
footer a:hover { color: var(--blue); }

@media (max-width: 860px) {
  .site-header { min-height: 70px; padding: 0 22px; }
  nav a:not(.nav-contact) { display: none; }
  .header-actions { gap: 16px; }
  .language-switch { padding-left: 16px; }
  .hero, .solutions, .implementation, .contact, footer { padding-left: 22px; padding-right: 22px; }
  .hero { padding-top: 65px; }
  .scope-strip, .section-heading, .solution-grid, .live-examples, .process-list li, .contact { grid-template-columns: 1fr; }
  .scope-strip div + div { border-left: 0; border-top: 1px solid var(--line); }
  .section-heading { gap: 22px; }
  .live-examples { gap: 22px; }
  .solution-grid { margin-left: 0; }
  .process-list li { gap: 18px; }
}

@media (max-width: 560px) {
  .wordmark { font-size: 16px; }
  .nav-contact { padding: 9px 12px; }
  .header-actions { gap: 10px; }
  .language-switch { gap: 7px; padding-left: 10px; }
  h1 { font-size: 50px; }
  .hero-copy { font-size: 17px; }
  .hero-actions, .hero-actions .button { width: 100%; }
  .scope-strip { margin-top: 64px; }
  .solutions { padding-bottom: 80px; padding-top: 82px; }
  .solution-card { min-height: auto; padding: 24px; }
  .example-links { grid-template-columns: 1fr; }
  .example-links a { padding: 4px 0 18px; }
  .example-links a + a { border-left: 0; border-top: 1px solid var(--line); padding: 18px 0 0; }
  .implementation { padding-bottom: 80px; padding-top: 80px; }
  .process-list { margin-top: 55px; }
  .contact { padding-bottom: 90px; padding-top: 90px; }
  .contact-actions, .contact-actions .button { width: 100%; }
  footer { align-items: flex-start; flex-direction: column; gap: 8px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}