/* ========== Tokens & Theme (off-white background) ========= */
:root {
  --bg: #EDE9DD; /* off-white warm, like photo background */
  --surface: #ffffff;
  --card: #ffffff;
  --text: #0c1020;
  --muted: #4a5572;
  --primary: #265DFF;
  --primary-ink: #ffffff;
  --accent: #10b981;
  --accent-ink: #ffffff;
  --border: #e6e8f2;
  --shadow: 0 10px 24px rgba(21,28,50,.08);
  --radius: 16px;
  --container: 1120px;
  --focus: 2px dashed var(--primary);
}
/* Dark mode kept but background remains soft off-white only in light */
html[data-theme="dark"] {
  --bg: #0b0c10;
  --surface: #111218;
  --card: #151823;
  --text: #e8eaf1;
  --muted: #b8bfd9;
  --primary: #4f8cff;
  --primary-ink: #06102b;
  --accent: #00c27a;
  --accent-ink: #03140d;
  --border: #25283a;
  --shadow: 0 10px 30px rgba(0,0,0,.25);
}
* { box-sizing: border-box }
html,body{height:100%}
body {
  margin: 0;
  font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, "Helvetica Neue", Arial, "Noto Sans", "Apple Color Emoji","Segoe UI Emoji","Segoe UI Symbol","Noto Color Emoji", sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.5;
  text-rendering: optimizeLegibility;
}
img{max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
a:hover{text-decoration:underline}
:focus-visible{outline:var(--focus);outline-offset:4px}

.container{max-width:var(--container);margin-inline:auto;padding:0 20px}
.section{padding:48px 0}

/* ========== Header & nav ========= */
.header-sticky{position:sticky;top:0;background:color-mix(in oklab, var(--surface), transparent 10%);backdrop-filter:saturate(1.2) blur(8px);border-bottom:1px solid var(--border);z-index:50}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:14px 0}
.nav{display:flex;align-items:center;gap:18px;flex-wrap:wrap}
.nav a{padding:8px 10px;border-radius:10px}
.nav a.active{background:color-mix(in oklab, var(--primary), transparent 88%);text-decoration:none}
.nav-toggle{display:none}

.nav-ctas{display:flex;gap:10px;align-items:center;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;gap:8px;padding:12px 16px;border-radius:999px;border:1px solid var(--border);background:var(--surface);box-shadow:var(--shadow);font-weight:600;white-space:nowrap}
.btn.small{padding:8px 12px;font-size:.95rem}
.btn:hover{text-decoration:none;transform:translateY(-1px)}
.btn.primary{background:var(--primary);color:var(--primary-ink);border-color:transparent}
.btn.accent{background:var(--accent);color:var(--accent-ink);border-color:transparent}
.btn.ghost{background:transparent}
.btn.icon{box-shadow:none;border:1px solid var(--border);width:40px;height:40px;justify-content:center}
.btn.wide{justify-content:center;width:100%}

/* ========== Responsive nav ========= */
@media (max-width: 980px){
  .nav{gap:12px}
  .nav-ctas .btn.small{padding:8px 10px;font-size:.9rem}
}
@media (max-width: 760px){
  .nav-toggle{display:inline-flex}
  .nav{position:fixed;right:16px;left:16px;top:68px;flex-direction:column;align-items:stretch;gap:12px;padding:16px;background:var(--surface);border:1px solid var(--border);border-radius:12px;transform:translateY(-20px);opacity:0;pointer-events:none;transition:all .2s ease}
  .nav.open{transform:translateY(0);opacity:1;pointer-events:auto}
  .nav a{padding:10px 12px;border:1px solid var(--border)}
  .nav-ctas{flex-direction:column;align-items:stretch}
  .btn.icon{width:100%}
}

/* ========== Hero ========= */
.hero{position:relative;padding:56px 0 24px}
.grid{display:grid;gap:24px}
.grid-2{grid-template-columns:1fr;align-items:center}
.grid-3{grid-template-columns:1fr;align-items:stretch}
@media (min-width: 900px){
  .grid-2{grid-template-columns:1.1fr .9fr}
  .grid-3{grid-template-columns:repeat(3,1fr)}
}
.card{
  background:var(--card);
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:24px;
  box-shadow:var(--shadow);
}
.hero-card h1{font-family:Manrope,Inter,sans-serif;font-size:clamp(28px,4vw,40px);line-height:1.1;margin:0 0 12px}
.lead{font-size:1.1rem;color:var(--muted);margin:0 0 12px}
.mt-2{margin-top:12px}
.benefits{margin:16px 0 0;padding:0 0 0 18px;color:var(--muted)}
.figure{margin:0;border-radius:var(--radius);overflow:hidden;border:1px solid var(--border);box-shadow:var(--shadow)}

/* ========== Prose & lists ========= */
.prose h1,.prose h2,.prose h3{font-family:Manrope,Inter,sans-serif;margin-top:0}
.small{font-size:.9rem;color:var(--muted)}
.list-articles{list-style:none;margin:0;padding:0;display:grid;gap:10px}
.list-articles li a{display:block;padding:14px 16px;border-radius:12px;border:1px solid var(--border);background:var(--surface)}
.list-articles li a:hover{transform:translateY(-1px);text-decoration:none;box-shadow:var(--shadow)}

/* ========== Effects ========= */
.lift{transition:transform .2s ease, box-shadow .2s ease}
.lift:hover{transform:translateY(-3px);box-shadow:0 16px 40px rgba(0,0,0,.12)}

/* ========== Footer ========= */
.footer-inner{display:flex;align-items:center;justify-content:space-between;padding:20px 0;border-top:1px solid var(--border)}
.to-top{display:inline-flex;align-items:center;justify-content:center;width:36px;height:36px;border-radius:10px;border:1px solid var(--border);text-decoration:none}

/* ========== Mobile CTA ========= */
.mobile-cta{
  position:fixed;left:0;right:0;bottom:0;padding:12px 16px;border-top:1px solid var(--border);
  background:color-mix(in oklab, var(--surface), transparent 5%);backdrop-filter:blur(10px);
  display:flex;gap:12px;z-index:60;
}
@media (min-width: 900px){ .mobile-cta{display:none} }

/* ========== Skip link ========= */
.skip-link{position:absolute;left:-9999px}
.skip-link:focus{left:16px;top:10px;background:var(--primary);color:var(--primary-ink);padding:8px 12px;border-radius:8px;z-index:100}

/* ========== FAQ ========= */
.faq{border:1px solid var(--border);border-radius:12px;padding:12px 16px;margin:10px 0;background:var(--surface)}
.faq>summary{cursor:pointer;font-weight:600}
.faq[open]{box-shadow:var(--shadow)}

/* ========== Utilities ========= */
.header-inner .brand{display:flex;align-items:center;gap:10px}
.nav button{margin-left:6px}