:root {
  --bg: #ffffff;
  --bg-soft: #f7f8fb;
  --bg-tint: #eef4ff;
  --text: #101828;
  --muted: #475467;
  --subtle: #667085;
  --line: #e4e7ec;
  --line-strong: #d0d5dd;
  --blue: #155eef;
  --blue-dark: #0b3b96;
  --green: #09804f;
  --amber: #b54708;
  --red: #b42318;
  --violet: #5925dc;
  --radius: 20px;
  --radius-sm: 12px;
  --shadow: 0 18px 50px rgba(16, 24, 40, .08);
  --shadow-sm: 0 8px 24px rgba(16, 24, 40, .06);
  --max: 1180px;
  --mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
  --sans: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
a { color: inherit; text-decoration: none; }
a:hover { color: var(--blue); }
img, svg { max-width: 100%; height: auto; }
.skip-link { position: absolute; top: -48px; left: 16px; padding: 10px 14px; border-radius: 999px; background: var(--text); color: white; z-index: 999; }
.skip-link:focus { top: 12px; }
.site-header { position: sticky; top: 0; z-index: 50; background: rgba(255,255,255,.86); backdrop-filter: blur(18px); border-bottom: 1px solid rgba(228,231,236,.8); }
.nav { max-width: var(--max); margin: 0 auto; padding: 14px 22px; display: flex; align-items: center; justify-content: space-between; gap: 18px; }
.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 760; letter-spacing: -.02em; }
.brand-mark { width: 34px; height: 34px; display: inline-grid; place-items: center; border-radius: 12px; background: linear-gradient(135deg, #155eef, #12b76a); color: white; box-shadow: 0 8px 20px rgba(21, 94, 239, .22); }
.nav-links { display: flex; align-items: center; gap: 6px; }
.nav-links a { padding: 9px 12px; border-radius: 999px; color: var(--muted); font-size: 14px; font-weight: 600; }
.nav-links a:hover { background: var(--bg-soft); color: var(--text); }
.nav-actions { display: flex; align-items: center; gap: 10px; }
.mobile-toggle { display: none; appearance: none; border: 1px solid var(--line); background: white; border-radius: 12px; padding: 9px 10px; color: var(--text); }
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 11px 16px; border-radius: 999px; border: 1px solid var(--line-strong); background: white; color: var(--text); font-size: 14px; font-weight: 720; box-shadow: 0 1px 0 rgba(16,24,40,.02); }
.btn:hover { border-color: #b2ccff; color: var(--blue); background: #f5f8ff; }
.btn.primary { background: var(--text); border-color: var(--text); color: white; box-shadow: 0 12px 30px rgba(16,24,40,.16); }
.btn.primary:hover { background: var(--blue); border-color: var(--blue); color: white; }
.btn.ghost { border-color: transparent; box-shadow: none; background: transparent; }
main { overflow: hidden; }
.hero { position: relative; padding: 76px 22px 50px; background: radial-gradient(circle at 60% 20%, #eef4ff 0, transparent 32%), linear-gradient(180deg,#fff 0,#fff 56%,#f8fafc 100%); }
.hero-inner { max-width: var(--max); margin: 0 auto; display: grid; grid-template-columns: minmax(0, 1.02fr) minmax(360px, .98fr); gap: 46px; align-items: center; }
.eyebrow { display: inline-flex; align-items: center; gap: 8px; margin: 0 0 16px; padding: 7px 11px; border: 1px solid var(--line); border-radius: 999px; background: rgba(255,255,255,.82); color: var(--muted); font-size: 13px; font-weight: 720; }
.eyebrow .dot { width: 8px; height: 8px; border-radius: 999px; background: var(--green); box-shadow: 0 0 0 5px rgba(9,128,79,.1); }
h1 { margin: 0; font-size: clamp(42px, 7vw, 78px); line-height: .96; letter-spacing: -.066em; }
.hero p.lede, .lede { color: var(--muted); font-size: clamp(18px, 2vw, 22px); line-height: 1.45; margin: 22px 0 0; max-width: 760px; }
.hero-ctas { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; margin-top: 30px; }
.keyword-row { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 24px; }
.keyword-row a, .pill { display: inline-flex; align-items: center; padding: 7px 10px; border: 1px solid var(--line); border-radius: 999px; background: white; color: var(--muted); font-size: 13px; font-weight: 650; }
.keyword-row a:hover, .pill:hover { border-color: #b2ccff; color: var(--blue); background: #f5f8ff; }
.product-window { border: 1px solid var(--line); border-radius: 26px; background: #fff; box-shadow: var(--shadow); overflow: hidden; }
.window-top { display: flex; align-items: center; justify-content: space-between; padding: 14px 16px; border-bottom: 1px solid var(--line); background: #fcfcfd; color: var(--muted); font: 700 12px/1 var(--mono); }
.dots { display: flex; gap: 6px; }
.dots i { width: 10px; height: 10px; border-radius: 999px; background: #d0d5dd; display: block; }
.receipt { padding: 20px; }
.receipt-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.metric { padding: 16px; border: 1px solid var(--line); border-radius: 16px; background: #fff; }
.metric span { display:block; color: var(--subtle); font-size: 12px; font-weight: 700; text-transform: uppercase; letter-spacing: .06em; }
.metric strong { display:block; margin-top: 6px; font-size: 28px; letter-spacing: -.04em; }
.metric.block strong { color: var(--red); }
.metric.watch strong { color: var(--amber); }
.metric.pass strong { color: var(--green); }
.log { margin-top: 14px; padding: 16px; background: #0b1220; color: #d0d5dd; border-radius: 18px; font: 500 13px/1.72 var(--mono); overflow: auto; }
.log b { color: #86efac; font-weight: 700; }
.log em { color: #fcd34d; font-style: normal; }
.trust-strip { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); background: #fff; }
.trust-inner { max-width: var(--max); margin: 0 auto; padding: 18px 22px; display: flex; flex-wrap: wrap; gap: 14px; align-items: center; justify-content: space-between; color: var(--subtle); font-size: 14px; font-weight: 640; }
.logo-cloud { display: flex; flex-wrap: wrap; gap: 8px; }
.logo-chip { border: 1px solid var(--line); border-radius: 999px; padding: 7px 10px; background: #fcfcfd; color: var(--muted); font-size: 12px; font-weight: 750; }
.section { padding: 82px 22px; }
.section.soft { background: var(--bg-soft); }
.container { max-width: var(--max); margin: 0 auto; }
.section-head { max-width: 780px; margin-bottom: 34px; }
.section-label { margin: 0 0 10px; color: var(--blue); font-size: 13px; font-weight: 820; text-transform: uppercase; letter-spacing: .1em; }
h2 { margin: 0; font-size: clamp(32px, 4vw, 52px); line-height: 1.02; letter-spacing: -.05em; }
h3 { margin: 0; font-size: 21px; line-height: 1.18; letter-spacing: -.025em; }
p { color: var(--muted); }
.grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; }
.grid.two { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.card { border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; background: #fff; box-shadow: 0 1px 0 rgba(16,24,40,.02); }
.card:hover { border-color: #c7d7fe; box-shadow: var(--shadow-sm); }
.card .icon { width: 38px; height: 38px; border-radius: 12px; display: grid; place-items: center; margin-bottom: 14px; background: #eef4ff; color: var(--blue); font-weight: 850; }
.card p { margin-bottom: 0; }
.answer-box { border: 1px solid #b2ccff; background: linear-gradient(180deg,#f5f8ff,#fff); border-radius: var(--radius); padding: 24px; box-shadow: var(--shadow-sm); }
.answer-box strong { color: var(--blue-dark); }
.split { display: grid; grid-template-columns: minmax(0,.96fr) minmax(0,1.04fr); gap: 28px; align-items: start; }
.check-list { list-style: none; padding: 0; margin: 20px 0 0; display: grid; gap: 12px; }
.check-list li { display: grid; grid-template-columns: 26px 1fr; gap: 10px; color: var(--muted); }
.check { width: 26px; height: 26px; border-radius: 999px; display: grid; place-items: center; background: #ecfdf3; color: var(--green); font-weight: 900; }
.timeline { display: grid; gap: 14px; }
.step { display: grid; grid-template-columns: 44px 1fr; gap: 14px; padding: 18px; border: 1px solid var(--line); border-radius: 18px; background: #fff; }
.step-num { width: 44px; height: 44px; border-radius: 14px; display: grid; place-items: center; background: #101828; color: white; font-weight: 900; }
.comparison { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--radius); background: #fff; }
table { width: 100%; border-collapse: collapse; min-width: 720px; }
th, td { padding: 15px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
th { background: #f8fafc; font-size: 13px; color: var(--muted); text-transform: uppercase; letter-spacing: .06em; }
tr:last-child td { border-bottom: 0; }
.quote { border-left: 4px solid var(--blue); padding: 6px 0 6px 18px; margin: 20px 0; color: var(--text); font-size: 20px; font-weight: 720; letter-spacing: -.02em; }
.faq { display: grid; gap: 12px; }
details { border: 1px solid var(--line); border-radius: 16px; background: #fff; padding: 16px 18px; }
summary { cursor: pointer; font-weight: 800; color: var(--text); }
details p { margin-bottom: 0; }
.related { display: flex; flex-wrap: wrap; gap: 10px; }
.related a { display: inline-flex; padding: 10px 12px; border-radius: 999px; border: 1px solid var(--line); background: #fff; color: var(--muted); font-size: 14px; font-weight: 700; }
.related a:hover { color: var(--blue); border-color: #b2ccff; background: #f5f8ff; }
.cta-band { padding: 64px 22px; background: #101828; color: white; }
.cta-card { max-width: var(--max); margin: 0 auto; border-radius: 28px; background: radial-gradient(circle at top right, rgba(21,94,239,.4), transparent 34%), #101828; border: 1px solid rgba(255,255,255,.12); padding: 40px; display: grid; grid-template-columns: minmax(0,1fr) auto; gap: 24px; align-items: center; }
.cta-card h2, .cta-card p { color: white; }
.cta-card p { opacity: .78; margin-bottom: 0; }
.cta-card .btn { background: white; border-color: white; color: #101828; }
.page-hero { padding: 62px 22px 44px; background: linear-gradient(180deg,#fff 0,#f8fafc 100%); border-bottom: 1px solid var(--line); }
.page-hero .container { max-width: 980px; }
.page-hero h1 { font-size: clamp(40px, 6vw, 68px); }
.breadcrumbs { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; color: var(--subtle); font-size: 13px; margin-bottom: 18px; }
.breadcrumbs a { color: var(--subtle); }
.breadcrumbs span { color: var(--line-strong); }
.article { padding: 56px 22px; }
.article .container { max-width: 980px; }
.article h2 { font-size: clamp(28px, 3vw, 42px); margin-top: 46px; }
.article h3 { margin-top: 30px; }
.article p, .article li { font-size: 17px; }
.article ul, .article ol { color: var(--muted); padding-left: 22px; }
.inline-callout { border: 1px solid var(--line); border-radius: 18px; background: #f8fafc; padding: 20px; margin: 26px 0; }
.code-block { background: #0b1220; color: #d0d5dd; padding: 18px; border-radius: 18px; overflow: auto; font: 500 13px/1.7 var(--mono); }
.term-index { columns: 2; column-gap: 24px; }
.term-index a { display:block; break-inside: avoid; padding: 11px 0; border-bottom: 1px solid var(--line); color: var(--text); font-weight: 760; }
.site-footer { border-top: 1px solid var(--line); background: #fff; }
.footer-inner { max-width: var(--max); margin: 0 auto; padding: 48px 22px; display: grid; grid-template-columns: 1.2fr repeat(4, 1fr); gap: 28px; }
.footer-brand p { color: var(--muted); margin: 14px 0 0; max-width: 330px; }
.footer-col h4 { margin: 0 0 12px; font-size: 13px; text-transform: uppercase; letter-spacing: .08em; color: var(--subtle); }
.footer-col a { display:block; padding: 6px 0; color: var(--muted); font-size: 14px; font-weight: 620; }
.footer-bottom { max-width: var(--max); margin: 0 auto; padding: 18px 22px 34px; color: var(--subtle); font-size: 13px; display:flex; flex-wrap: wrap; gap: 12px; justify-content: space-between; }
@media (max-width: 940px) {
  .hero-inner, .split, .cta-card { grid-template-columns: 1fr; }
  .grid, .grid.two { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr 1fr; }
  .nav-links { display: none; position: absolute; top: 64px; left: 16px; right: 16px; padding: 12px; border: 1px solid var(--line); border-radius: 18px; background: white; box-shadow: var(--shadow); flex-direction: column; align-items: stretch; }
  .nav-links.open { display: flex; }
  .nav-links a { border-radius: 12px; }
  .mobile-toggle { display: inline-flex; }
  .nav-actions .btn.ghost { display: none; }
}
@media (max-width: 560px) {
  .hero { padding-top: 46px; }
  .nav { padding: 12px 16px; }
  .receipt-grid { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr; }
  .cta-card { padding: 28px; }
  .term-index { columns: 1; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } * { transition: none !important; } }