/* Conventium Ltd. — grey / white, Ubuntu + Inter */

:root {
  --bg: #f4f5f7;
  --bg-elevated: #ffffff;
  --text: #17181c;
  --text-secondary: #5c5f66;
  --text-tertiary: #8b8f98;
  --border: rgba(23, 24, 28, 0.08);
  --border-strong: rgba(23, 24, 28, 0.14);
  --ink: #24262b;
  --ink-soft: #3a3d44;
  --band: #2b2d32;
  --band-muted: rgba(255, 255, 255, 0.72);
  --radius: 14px;
  --radius-sm: 10px;
  --shadow: 0 1px 2px rgba(23, 24, 28, 0.04), 0 12px 40px rgba(23, 24, 28, 0.06);
  --shadow-hover: 0 1px 2px rgba(23, 24, 28, 0.06), 0 20px 48px rgba(23, 24, 28, 0.09);
  --font-display: "Ubuntu", system-ui, sans-serif;
  --font-body: "Inter", system-ui, sans-serif;
  --max: 1040px;
  --ease: cubic-bezier(0.25, 0.1, 0.25, 1);
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: 1.65;
  letter-spacing: -0.011em;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

.wrap {
  width: min(100% - 2rem, var(--max));
  margin-inline: auto;
}

/* Header */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.78);
  backdrop-filter: blur(14px) saturate(1.2);
  border-bottom: 1px solid var(--border);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-block: 1rem 1.05rem;
}

.logo {
  font-family: var(--font-display);
  font-size: 1.375rem;
  font-weight: 500;
  color: var(--ink);
  text-decoration: none;
  letter-spacing: -0.02em;
  line-height: 1;
}

.logo__word {
  display: inline-block;
}

.logo:hover {
  color: var(--ink-soft);
}

.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.35rem;
  font-size: 0.875rem;
  font-weight: 500;
  letter-spacing: -0.01em;
}

.nav a {
  color: var(--text-secondary);
  text-decoration: none;
  transition: color 0.2s var(--ease);
}

.nav a:hover {
  color: var(--ink);
}

@media (max-width: 640px) {
  .site-header__inner {
    flex-direction: column;
    align-items: flex-start;
  }
}

/* Hero */

.hero {
  padding: clamp(3.25rem, 9vw, 5.75rem) 0 clamp(3.5rem, 7vw, 5rem);
  background:
    linear-gradient(180deg, #ffffff 0%, var(--bg) 42%, var(--bg) 100%),
    radial-gradient(ellipse 90% 60% at 85% -10%, rgba(36, 38, 43, 0.06), transparent 55%);
}

.eyebrow {
  margin: 0 0 1.1rem;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-tertiary);
}

.hero__title {
  margin: 0 0 1.35rem;
  font-family: var(--font-display);
  font-size: clamp(2rem, 4.8vw, 2.85rem);
  font-weight: 500;
  line-height: 1.12;
  letter-spacing: -0.03em;
  color: var(--ink);
  max-width: 22ch;
}

.hero__lead {
  margin: 0;
  max-width: 48ch;
  font-size: 1.0625rem;
  font-weight: 400;
  line-height: 1.68;
  color: var(--text-secondary);
}

/* Sections */

.section {
  padding: clamp(3.25rem, 6.5vw, 4.75rem) 0;
}

.section--alt {
  background: var(--bg-elevated);
  border-block: 1px solid var(--border);
}

.section__title {
  margin: 0 0 0.85rem;
  font-family: var(--font-display);
  font-size: clamp(1.65rem, 3.2vw, 2.05rem);
  font-weight: 500;
  letter-spacing: -0.03em;
  color: var(--ink);
}

.section__title--on-dark {
  color: #fff;
}

.section__intro {
  margin: 0 0 2rem;
  max-width: 62ch;
  color: var(--text-secondary);
  font-size: 1.02rem;
}

.section__lead {
  margin: 0 0 1rem;
  max-width: 58ch;
  font-size: 1.0625rem;
}

.section__lead--on-dark {
  color: var(--band-muted);
}

.section__lead--dim {
  opacity: 0.88;
  margin-bottom: 0;
}

.section--band {
  background: linear-gradient(165deg, var(--band) 0%, #1f2125 100%);
  color: #fff;
  border-block: 1px solid rgba(255, 255, 255, 0.06);
}

.section--band strong {
  color: #fff;
  font-weight: 600;
}

/* Cards */

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(268px, 1fr));
  gap: 1rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.card {
  padding: 1.55rem 1.5rem 1.6rem;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  transition:
    box-shadow 0.25s var(--ease),
    border-color 0.25s var(--ease),
    transform 0.25s var(--ease);
}

.card:hover {
  box-shadow: var(--shadow-hover);
  border-color: var(--border-strong);
  transform: translateY(-2px);
}

.card__title {
  margin: 0 0 0.45rem;
  font-family: var(--font-display);
  font-size: 1.0625rem;
  font-weight: 500;
  letter-spacing: -0.02em;
  color: var(--ink);
}

.card__text {
  margin: 0;
  font-size: 0.9375rem;
  color: var(--text-secondary);
  line-height: 1.62;
}

/* Split */

.split {
  display: grid;
  grid-template-columns: 1fr minmax(240px, 288px);
  gap: 2.75rem;
  align-items: start;
}

.split__text p {
  margin: 0 0 1rem;
  color: var(--text-secondary);
  max-width: 54ch;
  font-size: 1.02rem;
}

.split__text p:last-child {
  margin-bottom: 0;
}

.facts {
  margin: 0;
  padding: 1.45rem 1.4rem;
  list-style: none;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.facts li {
  padding-left: 0.65rem;
  margin-bottom: 1.05rem;
  font-size: 0.9rem;
  color: var(--text-secondary);
  border-left: 2px solid var(--ink);
  line-height: 1.55;
}

.facts li:last-child {
  margin-bottom: 0;
}

.facts__value {
  display: block;
  font-family: var(--font-display);
  font-size: 1.65rem;
  font-weight: 500;
  letter-spacing: -0.03em;
  color: var(--ink);
  line-height: 1.15;
  margin-bottom: 0.15rem;
}

@media (max-width: 768px) {
  .split {
    grid-template-columns: 1fr;
  }
}

/* Contact */

.contact__tagline {
  margin: 0 0 1.75rem;
  max-width: 48ch;
  color: var(--text-secondary);
  font-size: 1rem;
}

.contact__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  align-items: start;
}

@media (max-width: 720px) {
  .contact__grid {
    grid-template-columns: 1fr;
  }
}

.contact__channels {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.channel {
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: 1rem;
  padding: 1rem 1.2rem;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  text-decoration: none;
  color: inherit;
  transition:
    background 0.2s var(--ease),
    border-color 0.2s var(--ease),
    box-shadow 0.2s var(--ease);
}

.channel:hover {
  background: #fff;
  border-color: var(--border-strong);
  box-shadow: var(--shadow);
}

.channel:hover .channel__icon-wrap {
  border-color: var(--border-strong);
  color: var(--ink);
}

.channel__icon-wrap {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 3rem;
  height: 3rem;
  border-radius: 10px;
  background: #fff;
  border: 1px solid var(--border);
  color: var(--text-secondary);
  transition:
    border-color 0.2s var(--ease),
    color 0.2s var(--ease);
}

.channel__body {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.15rem;
  min-width: 0;
}

.channel__label {
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-tertiary);
}

.channel__value {
  font-size: 1rem;
  font-weight: 500;
  color: var(--ink);
  letter-spacing: -0.02em;
  word-break: break-word;
}

.icon {
  display: block;
}

.icon--mail {
  margin-top: 1px;
}

.contact__note-inline {
  margin: 0.35rem 0 0;
  font-size: 0.8125rem;
  line-height: 1.55;
  color: var(--text-tertiary);
  max-width: 36ch;
}

.contact__legal {
  padding: 1.35rem 1.4rem;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
}

.contact__legal-title {
  margin: 0 0 0.65rem;
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-tertiary);
}

.contact__name {
  margin: 0 0 0.35rem;
  font-family: var(--font-display);
  font-size: 1.0625rem;
  font-weight: 500;
  color: var(--ink);
  letter-spacing: -0.02em;
}

.contact__meta {
  margin: 0 0 1.1rem;
  font-size: 0.8125rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

.contact__legal-caption {
  margin: 0 0 0.35rem;
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-tertiary);
}

.contact__address {
  margin: 0;
  font-style: normal;
  font-size: 0.875rem;
  line-height: 1.65;
  color: var(--text-secondary);
}

.postcode {
  font-weight: 600;
  letter-spacing: 0.03em;
  color: var(--ink);
}

/* Footer */

.site-footer {
  padding: 2rem 0 2.5rem;
  border-top: 1px solid var(--border);
  background: #fafbfc;
}

.footer__inner {
  text-align: center;
}

.footer__brand {
  margin: 0 0 0.65rem;
  font-family: var(--font-display);
  font-size: 0.9375rem;
  font-weight: 500;
  letter-spacing: -0.02em;
  color: var(--ink);
}

.footer__links {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 0.35rem 0.5rem;
  margin-bottom: 1rem;
  font-size: 0.875rem;
}

.footer__link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  color: var(--text-secondary);
  font-weight: 500;
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition:
    color 0.2s var(--ease),
    border-color 0.2s var(--ease);
}

.footer__link:hover {
  color: var(--ink);
  border-bottom-color: var(--border-strong);
}

.footer__icon {
  flex-shrink: 0;
  opacity: 0.85;
}

.footer__link:hover .footer__icon {
  opacity: 1;
}

.footer__icon--mail {
  margin-top: 1px;
}

.footer__dot {
  color: var(--text-tertiary);
  user-select: none;
}

.footer__meta {
  margin: 0;
  font-size: 0.75rem;
  line-height: 1.55;
  color: var(--text-tertiary);
  max-width: 36rem;
  margin-inline: auto;
}