/* Tautua Limited — shared styles */
:root {
  color-scheme: light;
  --navy: #163a4c;
  --navy-2: #0f2c3a;
  --blue: #1f63b8;
  --blue-2: #2189d0;
  --sky: #6fb8e5;
  --mist: #e9f4fb;
  --surface: #ffffff;
  --surface-2: #f6f9fb;
  --line: #dbe6ee;
  --ink: #12222b;
  --ink-2: #44535c;
  --ink-3: #6b7a83;
  --radius: 14px;
  --shadow: 0 1px 2px rgba(16, 44, 58, .06), 0 8px 24px rgba(16, 44, 58, .06);
  --display: "Bebas Neue", "Oswald", "Arial Narrow", Impact, sans-serif;
  --body: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  /* chart series (validated: CVD ΔE ≥ 26 adjacent) */
  --s1: #1f63b8; --s2: #1baf7a; --s3: #6250d6; --s4: #eda100;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; font-family: var(--body); color: var(--ink); background: var(--surface); line-height: 1.6; font-size: 17px; }
img { max-width: 100%; display: block; }
a { color: var(--blue); }
a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible { outline: 3px solid var(--sky); outline-offset: 2px; }
.wrap { width: min(1120px, 100% - 40px); margin-inline: auto; }
.skip { position: absolute; left: -999px; top: 8px; background: var(--navy); color: #fff; padding: 8px 12px; border-radius: 8px; z-index: 99; }
.skip:focus { left: 8px; }

/* header */
.site-header { position: sticky; top: 0; z-index: 20; background: rgba(255,255,255,.94); backdrop-filter: blur(8px); border-bottom: 1px solid var(--line); }
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: 68px; }
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--navy); }
.brand img { height: 52px; width: auto; }
.brand span { font-family: var(--display); font-size: 26px; letter-spacing: .04em; line-height: 1; }
.nav { display: flex; align-items: center; gap: 22px; }
.nav a { color: var(--ink-2); text-decoration: none; font-weight: 500; font-size: 15px; }
.nav a:hover { color: var(--navy); }
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 12px 20px; border-radius: 999px; font-weight: 600; font-size: 16px; text-decoration: none; border: 2px solid transparent; cursor: pointer; font-family: inherit; transition: transform .15s ease, background .15s ease; }
.btn:hover { transform: translateY(-1px); }
.btn-primary { background: var(--blue); color: #fff; }
.btn-primary:hover { background: #18549e; }
.btn-ghost { background: transparent; color: var(--navy); border-color: var(--navy); }
.btn-light { background: #fff; color: var(--navy); }
.nav .btn { padding: 9px 16px; font-size: 15px; color: #fff; }
.menu-toggle { display: none; background: none; border: 0; font-size: 26px; color: var(--navy); cursor: pointer; }
@media (max-width: 860px) {
  .menu-toggle { display: block; }
  .nav { display: none; position: absolute; top: 68px; left: 0; right: 0; background: #fff; flex-direction: column; align-items: stretch; padding: 12px 20px 20px; border-bottom: 1px solid var(--line); gap: 6px; }
  .nav.open { display: flex; }
  .nav a { padding: 10px 0; font-size: 17px; }
  .nav .btn { margin-top: 8px; }
}

/* sections */
section { padding: 84px 0; }
.eyebrow { font-size: 13px; letter-spacing: .14em; text-transform: uppercase; color: var(--blue-2); font-weight: 700; margin: 0 0 10px; }
h1, h2, h3 { color: var(--navy); line-height: 1.12; margin: 0 0 16px; }
h1 { font-family: var(--display); font-weight: 400; font-size: clamp(48px, 7vw, 84px); letter-spacing: .01em; }
h2 { font-family: var(--display); font-weight: 400; font-size: clamp(36px, 4.6vw, 54px); letter-spacing: .01em; }
h3 { font-size: 20px; }
.lead { font-size: 20px; color: var(--ink-2); max-width: 62ch; }
.muted { color: var(--ink-3); }
.small { font-size: 14px; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: start; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
@media (max-width: 960px) { .grid-4 { grid-template-columns: 1fr 1fr; } .grid-3 { grid-template-columns: 1fr 1fr; } }
@media (max-width: 720px) { .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; } section { padding: 60px 0; } }
.card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 26px; box-shadow: var(--shadow); }
.card h3 { margin-bottom: 8px; }
.card p { margin: 0; color: var(--ink-2); }
.tint { background: var(--surface-2); }
.dark { background: var(--navy); color: #e8f1f6; }
.dark h2, .dark h3 { color: #fff; }
.dark .eyebrow { color: var(--sky); }
.dark .lead { color: #c9dbe5; }

/* footer */
.site-footer { background: var(--navy-2); color: #b9cdd8; padding: 48px 0 32px; font-size: 15px; }
.site-footer a { color: #e3eef4; }
.site-footer .wrap { display: grid; grid-template-columns: 1.3fr 1fr 1fr; gap: 32px; }
.site-footer h4 { color: #fff; margin: 0 0 10px; font-size: 15px; letter-spacing: .06em; text-transform: uppercase; }
.site-footer ul { list-style: none; margin: 0; padding: 0; }
.site-footer li { margin: 4px 0; }
.site-footer .legal { grid-column: 1 / -1; border-top: 1px solid rgba(255,255,255,.12); padding-top: 18px; font-size: 13px; color: #8fa8b6; }
@media (max-width: 720px) { .site-footer .wrap { grid-template-columns: 1fr; } }