/* AssistFai's landing page: the only stylesheet. Colours from the brand kit (brand/): blue #2B66CF, yellow #F5D800.
   Every text colour keeps at least 4.5:1 against its background. No web fonts: the system's own. */
:root {
  --blue: #2b66cf;
  --blue-ink: #1d4fa8;
  --blue-soft: #e8effb;
  --yellow: #f5d800;
  --yellow-soft: #fff8cc;
  --ink: #132131;
  --muted: #4b596a;
  --bg: #f4f7fb;
  --card: #ffffff;
  --line: #dbe2ea;
  --radius: 0.85rem;
  --wrap: 68rem;
}
* { box-sizing: border-box; }
html { font-family: system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif; color: var(--ink); background: var(--bg); line-height: 1.5; -webkit-text-size-adjust: 100%; }
body { margin: 0; font-size: 0.97rem; }
img, svg { max-width: 100%; }
a { color: var(--blue-ink); }
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible { outline: 3px solid var(--blue); outline-offset: 2px; }
.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 1.1rem; }
.skip { position: absolute; left: -999px; top: 0; background: var(--card); padding: 0.5rem 0.75rem; }
.skip:focus { left: 0.5rem; z-index: 10; }
.sprite { display: none; }

/* Header */
.site-header { background: var(--card); border-bottom: 1px solid var(--line); position: sticky; top: 0; z-index: 5; }
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; gap: 0.75rem; min-height: 3.5rem; }
.logo { display: inline-flex; align-items: center; }
.logo img { height: 2rem; width: auto; display: block; }
.site-nav { display: flex; align-items: center; gap: 0.25rem 1rem; flex-wrap: wrap; justify-content: flex-end; font-size: 0.88rem; }
.site-nav a { color: var(--muted); text-decoration: none; padding: 0.35rem 0; }
.site-nav a:hover { color: var(--ink); }
.site-nav .login { color: var(--blue-ink); font-weight: 600; }
.site-nav .optional { display: none; }
@media (min-width: 46rem) { .site-nav .optional { display: inline; } }

/* Hero */
.hero { padding: 2.75rem 0 2rem; }
.eyebrow { display: inline-block; background: var(--yellow-soft); color: var(--ink); font-size: 0.78rem; font-weight: 600; padding: 0.2rem 0.6rem; border-radius: 999px; margin: 0 0 0.9rem; }
h1 { font-size: clamp(1.7rem, 4.6vw, 2.75rem); line-height: 1.12; margin: 0 0 0.9rem; letter-spacing: -0.02em; max-width: 44rem; }
.lead { font-size: 1.06rem; color: var(--muted); max-width: 44rem; margin: 0 0 1.4rem; }
.actions { display: flex; flex-wrap: wrap; gap: 0.6rem; }
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 0.4rem; min-height: 2.75rem; padding: 0.55rem 1.1rem; border-radius: 0.65rem; font-weight: 600; text-decoration: none; border: 1px solid transparent; font-size: 0.95rem; cursor: pointer; }
.btn-primary { background: var(--blue); color: #fff; }
.btn-primary:hover { background: var(--blue-ink); }
.btn-secondary { background: var(--card); color: var(--ink); border-color: var(--line); }
.btn-secondary:hover { border-color: var(--blue); }
.hero-points { display: flex; flex-wrap: wrap; gap: 0.4rem 1.1rem; list-style: none; padding: 0; margin: 1.4rem 0 0; font-size: 0.86rem; color: var(--muted); }
.hero-points li { display: inline-flex; align-items: center; gap: 0.35rem; }
.hero-points svg { width: 1rem; height: 1rem; color: var(--blue); flex: none; }

/* Sections */
section { padding: 2.25rem 0; }
section + section { border-top: 1px solid var(--line); }
h2 { font-size: clamp(1.3rem, 3vw, 1.7rem); line-height: 1.2; margin: 0 0 0.5rem; letter-spacing: -0.01em; }
.section-intro { color: var(--muted); max-width: 44rem; margin: 0 0 1.4rem; }
.grid { display: grid; gap: 0.75rem; grid-template-columns: repeat(auto-fill, minmax(min(15.5rem, 100%), 1fr)); }
.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 1rem 1.05rem; }
.card h3 { font-size: 1rem; margin: 0.15rem 0 0.35rem; display: flex; align-items: center; gap: 0.5rem; }
.card h3 svg { width: 1.25rem; height: 1.25rem; color: var(--blue); flex: none; }
.card p { margin: 0; color: var(--muted); font-size: 0.9rem; }
.card ul { margin: 0.4rem 0 0; padding-left: 1.1rem; color: var(--muted); font-size: 0.88rem; }
.card li + li { margin-top: 0.2rem; }

/* Differentiators */
.diff { display: grid; gap: 0.75rem; grid-template-columns: repeat(auto-fill, minmax(min(19rem, 100%), 1fr)); }
.diff .card { border-left: 4px solid var(--yellow); }

/* White-label */
.brand-band { background: var(--blue); color: #fff; border-radius: var(--radius); padding: 1.5rem 1.25rem; display: grid; gap: 1rem; }
.brand-band h2 { color: #fff; }
.brand-band p { margin: 0; max-width: 44rem; }
.brand-band ul { margin: 0; padding-left: 1.2rem; }
.brand-band code { background: rgba(255, 255, 255, 0.16); padding: 0.05rem 0.35rem; border-radius: 0.35rem; font-size: 0.9em; }
@media (min-width: 52rem) { .brand-band { grid-template-columns: 1.2fr 1fr; align-items: start; padding: 2rem; } }

/* Prices */
.prices { display: grid; gap: 0.75rem; grid-template-columns: repeat(auto-fit, minmax(min(17rem, 100%), 1fr)); margin-bottom: 1rem; }
.plan { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 1.2rem; display: flex; flex-direction: column; gap: 0.7rem; }
.plan.featured { border: 2px solid var(--blue); }
.plan h3 { margin: 0; font-size: 1.15rem; }
.plan .tag { align-self: flex-start; background: var(--blue-soft); color: var(--blue-ink); font-size: 0.75rem; font-weight: 600; padding: 0.15rem 0.55rem; border-radius: 999px; }
.price { font-size: 2rem; font-weight: 700; letter-spacing: -0.02em; margin: 0; }
.price small { font-size: 0.85rem; font-weight: 500; color: var(--muted); letter-spacing: 0; }
.plan ul { margin: 0; padding-left: 1.1rem; font-size: 0.9rem; }
.plan li + li { margin-top: 0.25rem; }
.terms { list-style: none; padding: 0; margin: 0; display: grid; gap: 0.4rem; grid-template-columns: repeat(auto-fill, minmax(min(16rem, 100%), 1fr)); font-size: 0.9rem; }
.terms li { background: var(--card); border: 1px solid var(--line); border-radius: 0.6rem; padding: 0.55rem 0.75rem; }
.note { font-size: 0.82rem; color: var(--muted); margin: 0.9rem 0 0; }

/* FAQ */
.faq details { background: var(--card); border: 1px solid var(--line); border-radius: 0.7rem; padding: 0.2rem 1rem; }
.faq details + details { margin-top: 0.5rem; }
.faq summary { cursor: pointer; font-weight: 600; padding: 0.65rem 0; list-style-position: outside; }
.faq details p { margin: 0 0 0.85rem; color: var(--muted); font-size: 0.92rem; }

/* Demo */
.demo { display: grid; gap: 1.25rem; }
@media (min-width: 52rem) { .demo { grid-template-columns: 1fr 1.2fr; align-items: start; } }
form.card { display: grid; gap: 0.7rem; }
.field { display: grid; gap: 0.25rem; font-size: 0.88rem; font-weight: 600; }
.field input, .field textarea { font: inherit; font-weight: 400; color: var(--ink); background: var(--card); border: 1px solid #b7c2cf; border-radius: 0.55rem; padding: 0.55rem 0.65rem; min-height: 2.6rem; width: 100%; }
.field textarea { min-height: 5.5rem; resize: vertical; }
.row2 { display: grid; gap: 0.7rem; }
@media (min-width: 34rem) { .row2 { grid-template-columns: 1fr 1fr; } }
.form-note { font-size: 0.8rem; color: var(--muted); margin: 0; }

/* Legal pages */
.legal { max-width: 46rem; padding: 2rem 0 3rem; }
.legal h1 { font-size: clamp(1.5rem, 4vw, 2.1rem); }
.legal h2 { font-size: 1.15rem; margin-top: 1.8rem; }
.legal p, .legal li { color: var(--ink); }
.legal .version { color: var(--muted); font-size: 0.88rem; margin-top: -0.4rem; }
.legal .summary { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 0.9rem 1.1rem; }
.legal .summary ul { margin: 0.3rem 0 0; padding-left: 1.15rem; }

/* Footer */
.site-footer { border-top: 1px solid var(--line); background: var(--card); padding: 1.5rem 0 2rem; font-size: 0.85rem; color: var(--muted); }
.site-footer .wrap { display: grid; gap: 0.75rem; }
.site-footer nav { display: flex; flex-wrap: wrap; gap: 0.3rem 1.1rem; }
.site-footer a { color: var(--muted); }
.site-footer p { margin: 0; }