/* Wit Science Consulting — colours taken from the logo (Logo/Logo+Name+Crop.svg) */
:root {
  --blue: #215f9a;
  --blue-dark: #184a79;
  --green: #47d45a;
  --navy: #0b3041;
  --text: #0b3041;
  --muted: #4a5f6c;
  --line: #dde5ec;
  --tint: #f3f7fa;
  --white: #ffffff;
  --radius: 10px;
  --max: 1080px;
  --font: "Segoe UI", system-ui, -apple-system, Roboto, "Helvetica Neue", Arial, sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 112px; }
body {
  margin: 0;
  font-family: var(--font);
  font-size: 17px;
  line-height: 1.6;
  color: var(--text);
  background: var(--white);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: var(--blue); }
a:hover { color: var(--blue-dark); }
h1, h2, h3 { line-height: 1.2; margin: 0 0 .5em; color: var(--navy); }
h1 { font-size: clamp(2rem, 4.5vw, 3.1rem); letter-spacing: -.02em; }
h2 { font-size: clamp(1.6rem, 3vw, 2.1rem); letter-spacing: -.01em; }
h3 { font-size: 1.15rem; }
p { margin: 0 0 1em; }

.wrap { max-width: var(--max); margin: 0 auto; padding: 0 20px; }
section { padding: 80px 0; }
section.tint { background: var(--tint); }
.eyebrow {
  font-size: .8rem; font-weight: 700; letter-spacing: .12em; text-transform: uppercase;
  color: var(--blue); margin-bottom: .75em;
}
.lead { font-size: 1.15rem; color: var(--muted); max-width: 680px; }
.section-head { max-width: 720px; margin-bottom: 40px; }

/* Header */
.site-header {
  position: sticky; top: 0; z-index: 10;
  background: rgba(255,255,255,.96);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(6px);
}
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; height: 104px; gap: 16px; }
.brand img { height: 84px; width: auto; }
.nav { display: flex; align-items: center; gap: 26px; }
.nav a { text-decoration: none; color: var(--navy); font-weight: 600; font-size: .95rem; }
.nav a:hover { color: var(--blue); }
.lang { display: flex; gap: 2px; font-size: .85rem; font-weight: 700; }
.lang a, .lang span { padding: 4px 8px; border-radius: 6px; text-decoration: none; }
.lang span { background: var(--navy); color: var(--white); }
.lang a { color: var(--muted); }
.menu-toggle {
  display: none; background: none; border: 1px solid var(--line); border-radius: 8px;
  padding: 8px 10px; font: inherit; font-weight: 600; color: var(--navy); cursor: pointer;
}

/* Buttons and badge */
.btn {
  display: inline-block; padding: 13px 24px; border-radius: 8px;
  font-weight: 700; text-decoration: none; border: 2px solid var(--blue);
  background: var(--blue); color: var(--white); cursor: pointer; font: inherit; font-weight: 700;
}
.btn:hover { background: var(--blue-dark); border-color: var(--blue-dark); color: var(--white); }
.btn small { display: block; font-size: .78rem; font-weight: 500; opacity: .85; margin-top: 2px; }
.hero .actions .btn { display: inline-flex; flex-direction: column; justify-content: center; }
.btn.ghost { background: transparent; color: var(--blue); }
.btn.ghost:hover { background: var(--tint); color: var(--blue-dark); }
.badge {
  display: inline-flex; align-items: center; gap: 9px;
  padding: 7px 14px; border-radius: 999px;
  background: #eafbec; color: #17602a; font-weight: 600; font-size: .9rem;
  margin-bottom: 24px;
}
.badge::before {
  content: ""; width: 9px; height: 9px; border-radius: 50%;
  background: var(--green); box-shadow: 0 0 0 4px rgba(71,212,90,.25);
}

/* Hero */
.hero { padding: 88px 0 72px; }
.hero .tagline { font-size: 1.2rem; font-weight: 600; color: var(--blue); margin-bottom: 1em; }
.hero .actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 30px; }
.hero-grid { display: grid; grid-template-columns: 1.4fr 1fr; gap: 56px; align-items: center; }
.logo-story { text-align: center; }
.logo-story img { width: 100%; max-width: 340px; margin: 0 auto 22px; }
.logo-story ul { list-style: none; padding: 0; margin: 0 auto; display: inline-grid; gap: 10px; text-align: left; }
.logo-story li { display: flex; align-items: center; gap: 12px; font-size: .95rem; color: var(--muted); }
.logo-story li b { color: var(--navy); font-weight: 700; }
.logo-story svg { width: 30px; height: 30px; flex: none; }

/* Numbers */
.numbers { padding: 0; }
.numbers .grid {
  display: grid; grid-template-columns: repeat(5, 1fr);
  border-top: 1px solid var(--line); border-bottom: 1px solid var(--line);
}
.stat { padding: 30px 16px; text-align: center; border-left: 1px solid var(--line); }
.stat:first-child { border-left: 0; }
.stat strong { display: block; font-size: 2.3rem; color: var(--blue); line-height: 1.1; }
.stat span { font-size: .92rem; color: var(--muted); }
.stat.primary strong { color: var(--navy); }
.stat.primary strong::after {
  content: ""; display: block; width: 28px; height: 4px; border-radius: 2px;
  background: var(--green); margin: 8px auto 0;
}

/* Cards */
.cards { display: grid; gap: 22px; }
.cards.three { grid-template-columns: repeat(3, 1fr); }
.cards.two { grid-template-columns: repeat(2, 1fr); }
.card {
  background: var(--white); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 28px;
}
.card p:last-child, .card ul:last-child { margin-bottom: 0; }
.card ul { padding-left: 1.1em; margin: 0; }
.card li { margin-bottom: .35em; }
.card .for { color: var(--muted); font-size: .95rem; }
.hex {
  width: 40px; height: 40px; margin-bottom: 14px;
}
.problem-close { margin-top: 36px; font-size: 1.25rem; font-weight: 700; color: var(--blue); }

.card.feature { border-top: 4px solid var(--blue); }
.card.secondary { background: var(--tint); }
.card.tool { border: 1px dashed var(--blue); background: #f6faff; }

/* Steps */
/* Steps: circles run from green to blue, like the timeline in the logo */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; counter-reset: step; list-style: none; padding: 0; margin: 0 0 32px; }
.steps li { counter-increment: step; position: relative; padding-top: 60px; --c: var(--green); }
.steps li:nth-child(2) { --c: #3aad6f; }
.steps li:nth-child(3) { --c: #2e8685; }
.steps li:nth-child(4) { --c: var(--blue); }
.steps li::before {
  content: counter(step); position: absolute; top: 0; left: 0; z-index: 1;
  width: 42px; height: 42px; border-radius: 50%;
  border: 4px solid var(--c); background: var(--white);
  display: grid; place-items: center; font-weight: 800; color: var(--navy);
}
.steps li:not(:last-child)::after {
  content: ""; position: absolute; top: 19px; left: 42px; right: -22px; height: 4px;
  background: var(--c); opacity: .55;
}
.steps strong { display: block; margin-bottom: 4px; }
.steps span { color: var(--muted); font-size: .95rem; }
.note { color: var(--muted); max-width: 720px; }

/* Projects */
.subhead { font-size: 1.05rem; color: var(--muted); font-weight: 600; margin: 44px 0 18px; }
.project .meta { font-size: .88rem; color: var(--muted); margin-bottom: .6em; }
.project .role { font-size: .95rem; }
.project .role b { color: var(--navy); }
.project.current { border-left: 4px solid var(--green); }
.project { display: flex; flex-direction: column; }
.project .role { margin-bottom: 14px; }
.project .site { margin-top: auto; font-size: .9rem; font-weight: 600; }
.project .site a { text-decoration: none; }
.project .site a:hover { text-decoration: underline; }
.tag.pm { background: #e6eef6; color: var(--blue-dark); }
.tag {
  display: inline-block; font-size: .75rem; font-weight: 700; text-transform: uppercase; letter-spacing: .08em;
  padding: 3px 9px; border-radius: 999px; background: #eafbec; color: #17602a; margin-bottom: 10px;
}
.proposals { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(2, 1fr); gap: 0 32px; }
.proposals li { padding: 14px 0; border-bottom: 1px solid var(--line); }
.proposals li span { color: var(--muted); font-size: .92rem; }

.case { margin-top: 48px; background: var(--navy); color: #e6eef4; border-radius: var(--radius); padding: 40px; }
.case h3 { color: var(--white); font-size: 1.4rem; }
.case .eyebrow { color: var(--green); }
.case .cols { display: grid; grid-template-columns: 1fr 1.3fr 1fr; gap: 32px; margin-top: 20px; }
.case h4 { margin: 0 0 8px; color: var(--white); font-size: 1rem; }
.case ul { padding-left: 1.1em; margin: 0; }
.case a { color: var(--green); }

/* About */
.about { display: grid; grid-template-columns: 260px 1fr; gap: 48px; align-items: start; }
.portrait {
  aspect-ratio: 4 / 5; border-radius: var(--radius); background: var(--tint);
  border: 1px solid var(--line); display: grid; place-items: center;
}
.portrait img { width: 55%; height: auto; opacity: .9; }
.facts { list-style: none; padding: 0; margin: 20px 0 0; }
.facts li { padding: 8px 0; border-top: 1px solid var(--line); }
.facts b { display: inline-block; min-width: 110px; }

/* Guide */
.guide { display: flex; align-items: center; justify-content: space-between; gap: 32px; }
.guide .text { max-width: 640px; }

/* Contact */
.contact { display: grid; grid-template-columns: 1fr 1.2fr; gap: 48px; }
form { display: grid; gap: 16px; }
label { font-weight: 600; font-size: .95rem; display: block; margin-bottom: 6px; }
input[type=text], input[type=email], textarea {
  width: 100%; padding: 12px 14px; font: inherit; color: var(--text);
  border: 1px solid #c3d0db; border-radius: 8px; background: var(--white);
}
input:focus, textarea:focus { outline: 3px solid rgba(33,95,154,.25); border-color: var(--blue); }
textarea { min-height: 150px; resize: vertical; }
.check { display: flex; gap: 10px; align-items: flex-start; font-weight: 400; font-size: .92rem; color: var(--muted); }
.check input { margin-top: 5px; }
.hp { position: absolute; left: -9999px; }
.form-status { font-weight: 600; min-height: 1.5em; margin: 0; }
.form-status.ok { color: #17602a; }
.form-status.err { color: #b3261e; }
.direct { list-style: none; padding: 0; margin: 20px 0 0; }
.direct li { padding: 6px 0; }

/* Footer */
.site-footer { background: var(--navy); color: #b9c8d3; padding: 32px 0; font-size: .9rem; }
.site-footer .wrap { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px; }
.site-footer a { color: #e6eef4; margin-left: 18px; }

/* Legal pages */
.legal { max-width: 760px; padding: 56px 20px 80px; }
.legal h2 { font-size: 1.3rem; margin-top: 1.6em; }
.legal .todo { background: #fff6d6; padding: 2px 6px; border-radius: 4px; }

/* Responsive */
@media (max-width: 920px) {
  .numbers .grid { grid-template-columns: repeat(3, 1fr); }
  .stat:nth-child(4) { border-left: 0; }
  .stat:nth-child(n+4) { border-top: 1px solid var(--line); }
  .cards.three, .steps { grid-template-columns: repeat(2, 1fr); }
  .steps li:nth-child(2)::after { display: none; }
  .hero-grid { grid-template-columns: 1fr; gap: 40px; }
  .logo-story img { max-width: 240px; }
  .case .cols { grid-template-columns: 1fr; }
}
@media (max-width: 760px) {
  section { padding: 60px 0; }
  .menu-toggle { display: block; }
  .nav {
    display: none; position: absolute; top: 88px; left: 0; right: 0;
    flex-direction: column; align-items: flex-start; gap: 0;
    background: var(--white); border-bottom: 1px solid var(--line); padding: 8px 20px 16px;
  }
  .nav.open { display: flex; }
  .nav > a { padding: 10px 0; width: 100%; }
  .nav .lang { margin-top: 8px; }
  .stat strong { font-size: clamp(1.6rem, 7vw, 2.3rem); white-space: nowrap; }
  .site-header .wrap { height: 88px; }
  html { scroll-padding-top: 96px; }
  .brand img { height: 68px; }
  .steps li::after { display: none; }
  .numbers .grid { grid-template-columns: repeat(2, 1fr); }
  .stat { border-left: 0; border-top: 1px solid var(--line); }
  .stat:nth-child(odd) { border-right: 1px solid var(--line); }
  .stat:first-child { grid-column: 1 / -1; border-right: 0; border-top: 0; }
  .stat:first-child { border-right: 0; }
  .stat:nth-child(odd):not(:first-child) { border-right: 0; }
  .stat:nth-child(even) { border-right: 1px solid var(--line); }
  .cards.three, .cards.two, .steps, .proposals, .about, .contact { grid-template-columns: 1fr; }
  .about .portrait { max-width: 220px; }
  .guide { flex-direction: column; align-items: flex-start; }
  .case { padding: 28px 22px; }
  .site-footer a { margin: 0 18px 0 0; }
}

/* Working terms line in "How I work" */
.terms {
  max-width: 720px; padding: 14px 18px; margin-bottom: 18px;
  border-left: 4px solid var(--green); background: var(--tint); border-radius: 0 8px 8px 0;
}

/* Tools section */
.tool-card { display: flex; align-items: center; justify-content: space-between; gap: 32px; border-top: 4px solid var(--green); }
.tool-card > div { max-width: 680px; }
@media (max-width: 760px) { .tool-card { flex-direction: column; align-items: flex-start; } }