/* LANScan24 — design system
   Light-first "engineering reference" theme, blue + slate, dark-mode aware.
   Tokens: primary #2563EB, secondary #0891B2, accent #EA580C. */

/* ---------- tokens ---------- */
:root {
  --font-sans: "Inter", ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto,
               "Helvetica Neue", Arial, "Noto Sans", sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, "SF Mono", Menlo,
               Consolas, "Liberation Mono", monospace;

  --primary: #2563eb;
  --primary-strong: #1d4ed8;
  --primary-soft: #eff4ff;
  --on-primary: #ffffff;
  --secondary: #0891b2;
  --accent: #ea580c;
  --success: #15803d;
  --danger: #dc2626;

  --bg: #ffffff;
  --bg-alt: #f7f9fc;
  --surface: #ffffff;
  --surface-2: #f1f5fd;
  --fg: #0f172a;
  --fg-muted: #4a5a70;
  --fg-faint: #6b7a90;
  --border: #e2e8f2;
  --border-strong: #cbd6e8;
  --ring: #2563eb;

  --shadow-sm: 0 1px 2px rgba(15, 23, 42, .06);
  --shadow-md: 0 4px 14px rgba(15, 23, 42, .07);
  --shadow-lg: 0 18px 42px rgba(15, 23, 42, .12);

  --r-sm: 6px;
  --r-md: 10px;
  --r-lg: 16px;

  --sp-1: 4px;  --sp-2: 8px;  --sp-3: 12px; --sp-4: 16px;
  --sp-5: 24px; --sp-6: 32px; --sp-7: 48px; --sp-8: 64px; --sp-9: 96px;

  --wrap: 1140px;
  --measure: 72ch;
  --consent-h: 0px;

  color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
  :root {
    --primary: #60a5fa;
    --primary-strong: #93c5fd;
    --primary-soft: #16233c;
    --on-primary: #0b1220;
    --secondary: #22d3ee;
    --accent: #fb923c;
    --success: #4ade80;
    --danger: #f87171;

    --bg: #0b1220;
    --bg-alt: #0f172a;
    --surface: #111c2f;
    --surface-2: #16233c;
    --fg: #e8eefb;
    --fg-muted: #a7b6cd;
    --fg-faint: #8798b2;
    --border: #22304a;
    --border-strong: #32425f;
    --ring: #60a5fa;

    --shadow-sm: 0 1px 2px rgba(0, 0, 0, .4);
    --shadow-md: 0 4px 14px rgba(0, 0, 0, .45);
    --shadow-lg: 0 18px 42px rgba(0, 0, 0, .55);
  }
}

/* ---------- base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .01ms !important; animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }
}
body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 17px;
  line-height: 1.65;
  color: var(--fg);
  background: var(--bg);
  padding-bottom: var(--consent-h);
  text-rendering: optimizeLegibility;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--primary); text-underline-offset: .18em; text-decoration-thickness: 1px; }
a:hover { color: var(--primary-strong); }
:focus-visible { outline: 3px solid var(--ring); outline-offset: 2px; border-radius: 3px; }

h1, h2, h3, h4 { line-height: 1.22; letter-spacing: -.017em; margin: 0 0 var(--sp-3); font-weight: 700; }
h1 { font-size: clamp(30px, 4.6vw, 46px); }
h2 { font-size: clamp(24px, 3.2vw, 32px); margin-top: var(--sp-7); }
h3 { font-size: clamp(19px, 2.2vw, 22px); margin-top: var(--sp-5); }
h4 { font-size: 17px; margin-top: var(--sp-5); }
p, ul, ol { margin: 0 0 var(--sp-4); }
li { margin-bottom: var(--sp-2); }
code, kbd, samp { font-family: var(--font-mono); font-size: .88em; }
code {
  background: var(--surface-2); border: 1px solid var(--border);
  border-radius: var(--r-sm); padding: .1em .38em;
}
kbd {
  background: var(--surface); border: 1px solid var(--border-strong);
  border-bottom-width: 2px; border-radius: var(--r-sm);
  padding: .1em .42em; font-size: .82em; white-space: nowrap;
}
hr { border: 0; border-top: 1px solid var(--border); margin: var(--sp-7) 0; }
small { font-size: 14px; color: var(--fg-muted); }

/* ---------- layout ---------- */
.wrap { width: 100%; max-width: var(--wrap); margin-inline: auto; padding-inline: var(--sp-5); }
.section { padding-block: var(--sp-8); }
.section--alt { background: var(--bg-alt); border-block: 1px solid var(--border); }
.prose { max-width: var(--measure); }
.skip {
  position: absolute; left: -9999px; top: 0; z-index: 1000;
  background: var(--primary); color: var(--on-primary);
  padding: var(--sp-3) var(--sp-4); border-radius: 0 0 var(--r-md) 0; font-weight: 600;
}
.skip:focus { left: 0; }

/* ---------- header ---------- */
.site-head {
  position: sticky; top: 0; z-index: 40;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: saturate(160%) blur(10px);
  border-bottom: 1px solid var(--border);
}
.site-head__inner {
  display: flex; align-items: center; gap: var(--sp-4);
  min-height: 62px; flex-wrap: wrap;
}
.brand {
  display: inline-flex; align-items: center; gap: var(--sp-2);
  font-weight: 700; font-size: 18px; letter-spacing: -.02em;
  color: var(--fg); text-decoration: none; margin-right: auto;
}
.brand svg { width: 26px; height: 26px; flex: none; color: var(--primary); }
.brand span b { color: var(--primary); font-weight: 700; }
.nav { display: flex; align-items: center; gap: var(--sp-1); flex-wrap: wrap; }
.nav a {
  display: inline-flex; align-items: center; min-height: 44px;
  padding: 0 var(--sp-3); border-radius: var(--r-md);
  font-size: 15px; font-weight: 500; color: var(--fg-muted); text-decoration: none;
  transition: background-color .18s ease, color .18s ease;
}
.nav a:hover { background: var(--surface-2); color: var(--fg); }
.nav a[aria-current="page"] { color: var(--primary); background: var(--primary-soft); font-weight: 600; }

/* ---------- hero ---------- */
.hero {
  position: relative; overflow: hidden;
  background: var(--bg-alt); border-bottom: 1px solid var(--border);
  padding-block: var(--sp-8) var(--sp-8);
}
.hero::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background-image:
    linear-gradient(to right, color-mix(in srgb, var(--primary) 12%, transparent) 1px, transparent 1px),
    linear-gradient(to bottom, color-mix(in srgb, var(--primary) 12%, transparent) 1px, transparent 1px);
  background-size: 34px 34px;
  mask-image: radial-gradient(660px 320px at 24% 24%, #000 10%, transparent 78%);
  -webkit-mask-image: radial-gradient(660px 320px at 24% 24%, #000 10%, transparent 78%);
}
.hero > * { position: relative; }
.hero__grid { display: grid; gap: var(--sp-7); align-items: center; }
@media (min-width: 900px) { .hero__grid { grid-template-columns: 1.05fr .95fr; } }
.hero p.lead { font-size: 19px; color: var(--fg-muted); max-width: 60ch; }
.eyebrow {
  display: inline-flex; align-items: center; gap: var(--sp-2);
  font-size: 12px; font-weight: 700; letter-spacing: .12em; text-transform: uppercase;
  color: var(--primary); background: var(--primary-soft);
  border: 1px solid color-mix(in srgb, var(--primary) 26%, transparent);
  padding: 5px 12px; border-radius: 999px; margin-bottom: var(--sp-4);
}

/* ---------- buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: var(--sp-2);
  min-height: 46px; padding: 0 var(--sp-5);
  border-radius: var(--r-md); border: 1px solid transparent;
  font: inherit; font-size: 16px; font-weight: 600; text-decoration: none; cursor: pointer;
  transition: background-color .18s ease, border-color .18s ease, color .18s ease, box-shadow .18s ease;
}
.btn svg { width: 18px; height: 18px; flex: none; }
.btn--primary { background: var(--primary); color: var(--on-primary); box-shadow: var(--shadow-sm); }
.btn--primary:hover { background: var(--primary-strong); color: var(--on-primary); box-shadow: var(--shadow-md); }
.btn--ghost { background: var(--surface); color: var(--fg); border-color: var(--border-strong); }
.btn--ghost:hover { background: var(--surface-2); color: var(--fg); }
.btn-row { display: flex; flex-wrap: wrap; gap: var(--sp-3); margin-top: var(--sp-5); }

/* ---------- download CTA ---------- */
.download-cta { align-items: center; }
.download-cta .btn { min-height: 54px; padding: 0 var(--sp-6); font-size: 17px; }
.download-cta .btn svg { width: 21px; height: 21px; }
.download-note { font-size: 14px; color: var(--fg-muted, inherit); }

/* ---------- cards & grids ---------- */
.grid { display: grid; gap: var(--sp-5); }
.grid--2 { grid-template-columns: repeat(auto-fit, minmax(290px, 1fr)); }
.grid--3 { grid-template-columns: repeat(auto-fit, minmax(255px, 1fr)); }
.card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--r-lg); padding: var(--sp-5); box-shadow: var(--shadow-sm);
}
.card h3 { margin-top: 0; }
.card p:last-child, .card ul:last-child { margin-bottom: 0; }

.tool-card { display: flex; flex-direction: column; gap: var(--sp-3); }
.tool-card__top { display: flex; align-items: center; gap: var(--sp-3); }
.tool-card__icon {
  width: 44px; height: 44px; flex: none; border-radius: var(--r-md);
  border: 1px solid var(--border); background: var(--surface-2); padding: 5px; object-fit: contain;
}
.tool-card__rank {
  font-family: var(--font-mono); font-size: 12px; font-weight: 700; letter-spacing: .06em;
  color: var(--fg-faint); text-transform: uppercase;
}
.tool-card h3 { margin: 0; font-size: 20px; }
.tool-card ul { margin: 0; padding-left: 1.1em; font-size: 15.5px; color: var(--fg-muted); }
.tool-card footer {
  margin-top: auto; padding-top: var(--sp-4); border-top: 1px solid var(--border);
  display: flex; align-items: center; justify-content: space-between; gap: var(--sp-3); flex-wrap: wrap;
}

.badges { display: flex; flex-wrap: wrap; gap: 6px; }
.badge {
  display: inline-flex; align-items: center; gap: 5px;
  font-size: 12.5px; font-weight: 600; line-height: 1;
  padding: 5px 9px; border-radius: 999px;
  border: 1px solid var(--border-strong); background: var(--surface-2); color: var(--fg-muted);
}
.badge--free { color: var(--success); border-color: color-mix(in srgb, var(--success) 40%, transparent);
  background: color-mix(in srgb, var(--success) 10%, transparent); }
.badge--paid { color: var(--accent); border-color: color-mix(in srgb, var(--accent) 40%, transparent);
  background: color-mix(in srgb, var(--accent) 10%, transparent); }
.badge--trial { color: var(--secondary); border-color: color-mix(in srgb, var(--secondary) 40%, transparent);
  background: color-mix(in srgb, var(--secondary) 10%, transparent); }

/* ---------- tables ---------- */
.table-wrap {
  overflow-x: auto; -webkit-overflow-scrolling: touch;
  border: 1px solid var(--border); border-radius: var(--r-lg); background: var(--surface);
  margin-bottom: var(--sp-5);
}
table { border-collapse: collapse; width: 100%; min-width: 620px; font-size: 15.5px; }
caption { text-align: left; padding: var(--sp-4) var(--sp-4) 0; color: var(--fg-muted); font-size: 14.5px; }
th, td { padding: var(--sp-3) var(--sp-4); text-align: left; vertical-align: top;
  border-bottom: 1px solid var(--border); }
thead th {
  background: var(--surface-2); font-size: 13px; font-weight: 700;
  letter-spacing: .05em; text-transform: uppercase; color: var(--fg-muted);
  position: sticky; top: 0;
}
tbody tr:last-child td { border-bottom: 0; }
tbody th { font-weight: 600; }
td.num, th.num { font-variant-numeric: tabular-nums; }

/* ---------- figures / screenshots ---------- */
figure { margin: var(--sp-5) 0; }
.shot {
  border: 1px solid var(--border-strong); border-radius: var(--r-md);
  background: var(--surface-2); overflow: hidden; box-shadow: var(--shadow-md);
}
.shot img { width: 100%; }
figcaption { font-size: 14px; color: var(--fg-faint); margin-top: var(--sp-2); line-height: 1.5; }
.shot-grid { display: grid; gap: var(--sp-4); grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }
.shot-grid figure { margin: 0; }

/* ---------- steps ---------- */
.steps { list-style: none; margin: var(--sp-5) 0 0; padding: 0; counter-reset: step; }
.step {
  position: relative; counter-increment: step;
  padding: 0 0 var(--sp-6) var(--sp-7); margin: 0;
  border-left: 2px solid var(--border);
}
.step:last-child { border-left-color: transparent; padding-bottom: 0; }
.step::before {
  content: counter(step);
  position: absolute; left: -17px; top: 0;
  width: 32px; height: 32px; border-radius: 50%;
  background: var(--primary); color: var(--on-primary);
  font-family: var(--font-mono); font-size: 14px; font-weight: 700;
  display: grid; place-items: center;
}
.step > h3 { margin-top: 0; padding-top: 3px; }

/* ---------- callouts ---------- */
.note {
  border: 1px solid var(--border); border-left: 4px solid var(--primary);
  background: var(--primary-soft); border-radius: var(--r-md);
  padding: var(--sp-4) var(--sp-5); margin: var(--sp-5) 0; font-size: 16px;
}
.note--warn { border-left-color: var(--accent); background: color-mix(in srgb, var(--accent) 8%, var(--bg)); }
.note--legal { border-left-color: var(--danger); background: color-mix(in srgb, var(--danger) 7%, var(--bg)); }
.note p:last-child { margin-bottom: 0; }
.note > strong:first-child { display: block; margin-bottom: var(--sp-1); }

/* ---------- breadcrumbs, toc, faq ---------- */
.crumbs { font-size: 14px; color: var(--fg-faint); padding-block: var(--sp-4) 0; }
.crumbs ol { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 6px; }
.crumbs li::after { content: "/"; margin-left: 6px; color: var(--border-strong); }
.crumbs li:last-child::after { content: ""; }
.crumbs a { color: var(--fg-muted); text-decoration: none; }
.crumbs a:hover { color: var(--primary); text-decoration: underline; }

.toc {
  background: var(--surface-2); border: 1px solid var(--border);
  border-radius: var(--r-lg); padding: var(--sp-4) var(--sp-5); margin: var(--sp-5) 0;
}
.toc h2 { font-size: 13px; letter-spacing: .1em; text-transform: uppercase;
  color: var(--fg-muted); margin: 0 0 var(--sp-2); }
.toc ol { margin: 0; padding-left: 1.3em; font-size: 15.5px; columns: 2; column-gap: var(--sp-6); }
@media (max-width: 640px) { .toc ol { columns: 1; } }
.toc li { margin-bottom: 4px; break-inside: avoid; }

.faq details {
  border: 1px solid var(--border); border-radius: var(--r-md);
  background: var(--surface); margin-bottom: var(--sp-3);
}
.faq summary {
  cursor: pointer; list-style: none; padding: var(--sp-4) var(--sp-5);
  font-weight: 600; display: flex; gap: var(--sp-3); align-items: flex-start;
  min-height: 44px;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+"; margin-left: auto; color: var(--primary);
  font-family: var(--font-mono); font-size: 20px; line-height: 1;
}
.faq details[open] summary::after { content: "\2212"; }
.faq details[open] summary { border-bottom: 1px solid var(--border); }
.faq .faq__a { padding: var(--sp-4) var(--sp-5); }
.faq .faq__a p:last-child { margin-bottom: 0; }

/* ---------- misc ---------- */
.kv { display: grid; gap: var(--sp-2) var(--sp-4); grid-template-columns: max-content 1fr; font-size: 15.5px; }
.kv dt { color: var(--fg-faint); font-weight: 600; }
.kv dd { margin: 0; }
.checklist { list-style: none; padding: 0; }
.checklist li { position: relative; padding-left: 28px; }
.checklist li::before {
  content: ""; position: absolute; left: 4px; top: .55em;
  width: 9px; height: 9px; border-radius: 2px; background: var(--primary);
}
.updated { font-size: 14px; color: var(--fg-faint); margin-bottom: var(--sp-4); }
.vendor-link { font-size: 15px; font-weight: 600; }

/* ---------- footer ---------- */
.site-foot {
  background: var(--bg-alt); border-top: 1px solid var(--border);
  padding-block: var(--sp-7) var(--sp-5); margin-top: var(--sp-8); font-size: 15px;
}
.foot-grid { display: grid; gap: var(--sp-6); grid-template-columns: repeat(auto-fit, minmax(190px, 1fr)); }
.site-foot h2 { font-size: 13px; letter-spacing: .1em; text-transform: uppercase;
  color: var(--fg-muted); margin: 0 0 var(--sp-3); }
.site-foot ul { list-style: none; margin: 0; padding: 0; }
.site-foot li { margin-bottom: var(--sp-2); }
.site-foot a { color: var(--fg-muted); text-decoration: none; }
.site-foot a:hover { color: var(--primary); text-decoration: underline; }
.foot-bottom {
  margin-top: var(--sp-6); padding-top: var(--sp-4); border-top: 1px solid var(--border);
  color: var(--fg-faint); font-size: 13.5px; display: flex; gap: var(--sp-4);
  flex-wrap: wrap; justify-content: space-between;
}
.foot-bottom p { margin: 0; max-width: 78ch; }
.linkish {
  background: none; border: 0; padding: 0; font: inherit; color: var(--fg-muted);
  text-decoration: underline; cursor: pointer;
}
.linkish:hover { color: var(--primary); }

/* ---------- cookie consent ---------- */
.consent {
  position: fixed; inset-inline: 0; bottom: 0; z-index: 90;
  background: var(--surface); border-top: 1px solid var(--border-strong);
  box-shadow: var(--shadow-lg);
}
.consent__inner {
  display: flex; gap: var(--sp-4); align-items: center; flex-wrap: wrap;
  padding-block: var(--sp-4);
}
.consent__text { flex: 1 1 380px; font-size: 15px; color: var(--fg-muted); margin: 0; }
.consent__text strong { color: var(--fg); }
.consent__actions { display: flex; gap: var(--sp-3); flex-wrap: wrap; }
.consent .btn { min-height: 44px; font-size: 15px; padding-inline: var(--sp-4); }

@media (max-width: 520px) {
  body { font-size: 16.5px; }
  .consent__actions { width: 100%; }
  .consent__actions .btn { flex: 1 1 140px; }
}

/* ---------- utilities (kept as classes so the CSP needs no 'unsafe-inline') ---------- */
.m0 { margin: 0; }
.mt0 { margin-top: 0; }
.mt5 { margin-top: var(--sp-5); }
.mt6 { margin-top: var(--sp-6); }
.pt5 { padding-top: var(--sp-5); }
.py9 { padding-block: var(--sp-9); }
.center { text-align: center; }
.center-row { justify-content: center; }
.narrow { max-width: 62ch; }
.faq--wide { max-width: 82ch; }
.tool-card__icon--text {
  display: grid; place-items: center;
  font-family: var(--font-mono); font-weight: 700; color: var(--primary);
}
.mark-dead { color: var(--danger); font-weight: 700; }
.mark-open { color: var(--success); font-weight: 700; }
.mark-alive { color: var(--primary); font-weight: 700; }