/* Brand tokens */
:root {
  --brand-teal: #0ea5a1; /* teal */
  --brand-copper: #c6683a; /* copper */
  --brand-dark: #0f172a; /* slate-900 */
  --brand-mid: #1e293b; /* slate-800 */
  --brand-light: #f8fafc; /* slate-50 */
  --text: #e2e8f0; /* slate-200 */
  --muted: #94a3b8; /* slate-400 */
  --radius: 14px;
  --shadow: 0 10px 30px rgba(15,23,42,.25);
}

/* Base */
* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Ubuntu, Cantarell, "Fira Sans", "Droid Sans", "Helvetica Neue", Arial, "Noto Sans", sans-serif;
  color: var(--text);
  background: linear-gradient(120deg, #0b1225 0%, #0f172a 60%, #132035 100%);
}

.container { width: min(1100px, 92vw); margin: 0 auto; }
.skip-link { position:absolute; left:-999px; top:auto; width:1px; height:1px; overflow:hidden; }
.skip-link:focus { left: 16px; top: 8px; width:auto; height:auto; background:#fff; color:#000; padding:.5rem 1rem; border-radius:8px; }

/* Header */
.site-header { position: sticky; top: 0; z-index: 20; backdrop-filter: blur(8px); background: rgba(15,23,42,.6); border-bottom: 1px solid rgba(255,255,255,.06); }
.header-bar { display:flex; align-items:center; justify-content:space-between; padding: .85rem 0; }
.brand { display:flex; align-items:center; gap:.6rem; color:#fff; text-decoration:none; font-weight:700; letter-spacing:.2px; }
.nav a { color: var(--text); text-decoration:none; margin-left: 1rem; padding:.4rem .6rem; border-radius:8px; }
.nav a:hover, .nav a:focus { background: rgba(255,255,255,.06); }

/* Hero */
.hero { position: relative; padding: 6rem 0 4rem; text-align:center; }
.hero-bg { position:absolute; inset:0; background:
  radial-gradient(1200px 800px at 20% 0%, rgba(14,165,161,.20), transparent 60%),
  radial-gradient(1200px 800px at 80% 100%, rgba(198,104,58,.20), transparent 60%);
  pointer-events:none; }
.hero-content { position:relative; }
.hero h1 { font-size: clamp(2rem, 4vw + .5rem, 3.2rem); margin: 1rem 0; line-height:1.15; }
.lead { font-size: clamp(1rem, 1.4vw + .3rem, 1.25rem); color: #cbd5e1; max-width: 60ch; margin: 0 auto 1.5rem; }
.hero-mark { filter: drop-shadow(0 14px 22px rgba(0,0,0,.35)); opacity:.95; }
.cta { display:flex; gap:.8rem; justify-content:center; flex-wrap:wrap; margin-top: 1rem; }

/* Buttons */
.btn { display:inline-block; text-decoration:none; font-weight:700; border-radius: 999px; padding:.85rem 1.15rem; transition: transform .12s ease, box-shadow .12s ease, background .2s; }
.btn:focus { outline:2px solid #fff; outline-offset:2px; }
.btn.primary { color:#041016; background: linear-gradient(180deg, #19c2bd, var(--brand-teal)); box-shadow: 0 8px 20px rgba(14,165,161,.35); }
.btn.primary:hover { transform: translateY(-1px); }
.btn.ghost { color:#e2e8f0; border:1px solid rgba(255,255,255,.2); background: rgba(255,255,255,.06); }
.btn.ghost:hover { background: rgba(255,255,255,.12); }
.btn.block { display:block; text-align:center; }

/* Sections */
.section { padding: 4rem 0; }
.section.alt { background: linear-gradient(180deg, rgba(255,255,255,.03), rgba(255,255,255,.01)); }
.grid-2 { display:grid; grid-template-columns: 1.1fr .9fr; gap: 2rem; }
@media (max-width: 900px) { .grid-2 { grid-template-columns: 1fr; } }

.bullets { line-height:1.7; color:#cbd5e1; }
.bullets li { margin:.35rem 0; }

.cards { display:grid; grid-template-columns: repeat(3, 1fr); gap: 1.2rem; }
@media (max-width: 900px) { .cards { grid-template-columns: 1fr; } }
.card { background: rgba(255,255,255,.05); border: 1px solid rgba(255,255,255,.08); border-radius: var(--radius); padding: 1.2rem 1.1rem; box-shadow: var(--shadow); }
.card h3 { margin-top:0; }
.card.highlight { background: linear-gradient(180deg, rgba(14,165,161,.12), rgba(198,104,58,.12)); }

.quotes { display:grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; }
@media (max-width: 900px) { .quotes { grid-template-columns: 1fr; } }
blockquote { margin:0; padding:1.2rem; background: rgba(255,255,255,.04); border-left: 4px solid var(--brand-teal); border-radius: var(--radius); }
blockquote p { margin:0 0 .6rem; }
blockquote cite { color: var(--muted); font-style: normal; }

/* Footer */
.site-footer { border-top: 1px solid rgba(255,255,255,.06); padding: 2.2rem 0; }
.footer-grid { display:flex; align-items:center; justify-content:space-between; flex-wrap:wrap; gap:.8rem; }
.brandline { color:#cbd5e1; }
.footer-nav a { color:#cbd5e1; text-decoration:none; margin-right:1rem; }
.footer-nav a:hover { text-decoration:underline; }

/* Utilities */
.visually-hidden { position:absolute; width:1px; height:1px; padding:0; margin:-1px; overflow:hidden; clip:rect(0,0,0,0); white-space:nowrap; border:0; }