/* ==========================================================================
   B2BLLM Secure - shared stylesheet
   Static, dependency free: no external fonts, CDNs, analytics or cookies.
   ========================================================================== */

:root {
  --ink: #0d1a2b;
  --ink-soft: #33475d;
  --muted: #5d7085;
  --line: #e3e9f1;
  --line-strong: #cdd8e6;
  --bg: #ffffff;
  --surface: #f5f8fc;
  --surface-2: #edf2f8;
  --navy: #0a1a2f;
  --navy-soft: #12293f;
  --accent: #1f5fd0;
  --accent-ink: #17439a;
  --accent-soft: #e9f0fd;
  --ok: #0f7a58;
  --ok-soft: #e6f5ee;
  --radius: 16px;
  --radius-sm: 10px;
  --shadow-sm: 0 1px 2px rgba(13, 26, 43, 0.05);
  --shadow: 0 1px 2px rgba(13, 26, 43, 0.05), 0 14px 34px -20px rgba(13, 26, 43, 0.4);
  --max: 1120px;
}

*,
*::before,
*::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 16px/1.65 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img, svg { max-width: 100%; }
svg { display: block; }

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

h1, h2, h3, h4 { margin: 0; letter-spacing: -0.022em; line-height: 1.18; font-weight: 650; }
p { margin: 0; }
ul, ol { margin: 0; padding: 0; }

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}

.skip {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--navy);
  color: #fff;
  padding: 12px 18px;
  z-index: 100;
  border-radius: 0 0 8px 0;
}
.skip:focus { left: 0; }

/* ---------- layout ------------------------------------------------------- */

.wrap {
  width: min(var(--max), calc(100% - 48px));
  margin-inline: auto;
}

.section { padding: 78px 0; }
.section--tight { padding: 54px 0; }
.section--flush { padding-top: 0; }
.section--alt {
  background: var(--surface);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.section-head { max-width: 690px; margin-bottom: 40px; }
.section-head p { margin-top: 14px; color: var(--muted); font-size: 17px; }

.eyebrow {
  display: inline-block;
  margin-bottom: 18px;
  color: var(--accent-ink);
  font-size: 12.5px;
  font-weight: 650;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

h1 { font-size: clamp(34px, 5vw, 54px); letter-spacing: -0.03em; }
h2 { font-size: clamp(25px, 3.4vw, 34px); }
h3 { font-size: 18px; }
h4 { font-size: 13px; text-transform: uppercase; letter-spacing: 0.08em; color: var(--muted); }

.lede {
  margin-top: 20px;
  max-width: 34em;
  color: var(--ink-soft);
  font-size: clamp(17px, 1.5vw, 19.5px);
  line-height: 1.6;
}

.muted { color: var(--muted); }
.small { font-size: 14px; }

/* ---------- header ------------------------------------------------------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.9);
  -webkit-backdrop-filter: saturate(180%) blur(10px);
  backdrop-filter: saturate(180%) blur(10px);
  border-bottom: 1px solid var(--line);
}

.header-inner {
  display: flex;
  align-items: center;
  gap: 32px;
  min-height: 70px;
  padding: 12px 0;
}

.brand {
  display: flex;
  align-items: center;
  gap: 11px;
  color: var(--ink);
  font-weight: 680;
  letter-spacing: -0.02em;
  white-space: nowrap;
}
.brand:hover { text-decoration: none; }

.brand-mark {
  display: grid;
  place-items: center;
  width: 32px;
  height: 32px;
  border-radius: 9px;
  background: var(--navy);
  color: #fff;
  flex: none;
}
.brand-mark svg { width: 17px; height: 17px; }

.brand-sub {
  display: block;
  margin-top: -2px;
  color: var(--muted);
  font-size: 10.5px;
  font-weight: 600;
  letter-spacing: 0.11em;
  text-transform: uppercase;
}

.nav { margin-left: auto; }
.nav ul {
  display: flex;
  align-items: center;
  gap: 26px;
  list-style: none;
  font-size: 14.5px;
}
.nav a { color: var(--ink-soft); }
.nav a:hover { color: var(--ink); text-decoration: none; }

.header-actions { display: flex; align-items: center; gap: 14px; }

/* ---------- buttons ------------------------------------------------------ */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 12px 20px;
  border: 1px solid transparent;
  border-radius: 9px;
  font-size: 14.5px;
  font-weight: 600;
  line-height: 1.2;
  white-space: nowrap;
  transition: background-color 0.15s ease, border-color 0.15s ease, color 0.15s ease;
}
.btn:hover { text-decoration: none; }

.btn--primary { background: var(--accent); color: #fff; box-shadow: var(--shadow-sm); }
.btn--primary:hover { background: var(--accent-ink); }

.btn--ghost { border-color: var(--line-strong); background: #fff; color: var(--ink); }
.btn--ghost:hover { border-color: var(--ink-soft); }

.btn--light { background: #fff; color: var(--navy); }
.btn--light:hover { background: #eaf1fb; }

.btn--outline-light { border-color: rgba(255, 255, 255, 0.32); color: #fff; }
.btn--outline-light:hover { border-color: rgba(255, 255, 255, 0.7); }

.btn-row { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; }

/* ---------- hero --------------------------------------------------------- */

.hero {
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(760px 380px at 88% -12%, rgba(31, 95, 208, 0.1), transparent 68%),
    linear-gradient(180deg, #ffffff 0%, var(--surface) 100%);
}

.hero-inner {
  display: grid;
  grid-template-columns: minmax(0, 1.18fr) minmax(0, 0.82fr);
  gap: 64px;
  align-items: center;
  padding: 88px 0 92px;
}

.hero-points {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  margin-top: 26px;
  padding: 0;
  list-style: none;
  color: var(--muted);
  font-size: 14px;
}
.hero-points li { display: flex; align-items: center; gap: 7px; }
.hero-points li::before {
  content: "";
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--accent);
  flex: none;
}

.page-head {
  padding: 68px 0 60px;
}
.page-head h1 { max-width: 16em; }
.page-head .lede { max-width: 44em; }

.panel {
  padding: 26px 28px 28px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.panel h3 { font-size: 15.5px; }
.panel-note { margin-top: 6px; color: var(--muted); font-size: 13.5px; }

.panel-list { margin-top: 20px; padding: 0; list-style: none; font-size: 14.5px; }
.panel-list li {
  display: flex;
  gap: 12px;
  padding: 12px 0;
  border-top: 1px solid var(--line);
  color: var(--ink-soft);
}
.panel-list li:first-child { border-top: 0; padding-top: 0; }
.panel-list li:last-child { padding-bottom: 0; }
.panel-list svg { width: 16px; height: 16px; margin-top: 4px; color: var(--accent); flex: none; }

.status-line {
  display: flex;
  align-items: center;
  gap: 9px;
  margin-top: 22px;
  padding-top: 18px;
  border-top: 1px dashed var(--line-strong);
  color: var(--muted);
  font-size: 12.5px;
}
.dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--ok);
  box-shadow: 0 0 0 3px var(--ok-soft);
  flex: none;
}

/* ---------- sectors strip ------------------------------------------------ */

.strip {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 10px 26px;
  padding: 22px 0;
  border-bottom: 1px solid var(--line);
  font-size: 13px;
  color: var(--muted);
}
.strip strong {
  color: var(--ink-soft);
  font-size: 11.5px;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  font-weight: 650;
}
.strip span { color: var(--ink-soft); }

/* ---------- cards -------------------------------------------------------- */

.grid { display: grid; gap: 20px; }
.grid--3 { grid-template-columns: repeat(auto-fit, minmax(290px, 1fr)); }
.grid--2 { grid-template-columns: repeat(auto-fit, minmax(340px, 1fr)); }
.grid--4 { grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }

/* Exactly two columns while there is room, then one. */
.grid--pair { grid-template-columns: repeat(2, minmax(0, 1fr)); }

.card {
  padding: 26px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
}
.card h3 { margin-bottom: 10px; }
.card p { color: var(--muted); font-size: 14.8px; }
.card ul { margin-top: 14px; padding-left: 18px; color: var(--muted); font-size: 14.5px; }
.card li + li { margin-top: 7px; }

.card-icon {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  margin-bottom: 18px;
  border-radius: 10px;
  background: var(--accent-soft);
  color: var(--accent-ink);
}
.card-icon svg { width: 20px; height: 20px; }

.card--quiet { background: var(--surface); box-shadow: none; }

/* ---------- steps -------------------------------------------------------- */

.steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 22px;
  counter-reset: step;
}
.step {
  position: relative;
  padding-top: 30px;
  border-top: 2px solid var(--line-strong);
}
.step::before {
  counter-increment: step;
  content: "0" counter(step);
  position: absolute;
  top: -13px;
  left: 0;
  padding-right: 12px;
  background: var(--bg);
  color: var(--accent);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.04em;
}
.section--alt .step::before { background: var(--surface); }
.step h3 { margin-bottom: 8px; font-size: 16.5px; }
.step p { color: var(--muted); font-size: 14.5px; }

/* ---------- stats -------------------------------------------------------- */

.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 26px;
  padding: 34px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.stat b {
  display: block;
  color: var(--navy);
  font-size: 30px;
  font-weight: 680;
  letter-spacing: -0.03em;
  line-height: 1.1;
}
.stat span { display: block; margin-top: 7px; color: var(--muted); font-size: 13.5px; }

/* ---------- callout ------------------------------------------------------ */

.callout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 32px;
  align-items: center;
  padding: 34px 36px;
  background: #fff;
  border: 1px solid var(--line);
  border-left: 3px solid var(--accent);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
}
.callout p { margin-top: 10px; color: var(--muted); font-size: 15px; max-width: 62ch; }

/* ---------- faq ---------------------------------------------------------- */

.faq { display: grid; gap: 10px; max-width: 820px; }
.faq details {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 0 22px;
}
.faq details[open] { border-color: var(--line-strong); }
.faq summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 18px 0;
  cursor: pointer;
  font-weight: 600;
  font-size: 15.5px;
  list-style: none;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+";
  color: var(--muted);
  font-size: 20px;
  font-weight: 400;
  line-height: 1;
  flex: none;
}
.faq details[open] summary::after { content: "-"; }
.faq details > p {
  padding: 0 0 20px;
  margin-top: -2px;
  color: var(--muted);
  font-size: 14.8px;
  max-width: 68ch;
}

/* ---------- cta band ----------------------------------------------------- */

.cta-band {
  background:
    radial-gradient(620px 300px at 82% 0%, rgba(31, 95, 208, 0.32), transparent 70%),
    linear-gradient(180deg, var(--navy-soft), var(--navy));
  color: #fff;
}
.cta-inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 36px;
  align-items: center;
  padding: 66px 0;
}
.cta-band h2 { color: #fff; }
.cta-band p { margin-top: 12px; color: #b9c8da; font-size: 16px; max-width: 52ch; }
.cta-band .btn-row { margin-top: 0; }

/* ---------- prose (legal) ------------------------------------------------ */

.prose { max-width: 780px; padding: 60px 0 84px; }
.prose h1 { font-size: clamp(30px, 4vw, 42px); }
.prose .updated { margin-top: 14px; color: var(--muted); font-size: 14px; }
.prose h2 { margin: 40px 0 12px; font-size: 21px; letter-spacing: -0.015em; }
.prose h3 { margin: 26px 0 8px; font-size: 16.5px; }
.prose p, .prose li { color: var(--ink-soft); font-size: 15.3px; }
.prose p + p { margin-top: 14px; }
.prose ul, .prose ol { margin: 12px 0 0; padding-left: 22px; }
.prose li + li { margin-top: 8px; }
.prose a { text-decoration: underline; text-underline-offset: 2px; }

/* ---------- contact ------------------------------------------------------ */

.contact-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 0.82fr);
  gap: 56px;
  align-items: start;
  padding: 72px 0 88px;
}

.mail-box {
  display: block;
  margin-top: 26px;
  padding: 22px 26px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow-sm);
}
.mail-box span { display: block; color: var(--muted); font-size: 12.5px; letter-spacing: 0.08em; text-transform: uppercase; }
.mail-box strong {
  display: block;
  margin-top: 6px;
  color: var(--ink);
  font-size: clamp(19px, 2.6vw, 25px);
  font-weight: 650;
  letter-spacing: -0.02em;
  word-break: break-word;
}

.checklist { margin: 0; padding: 0; list-style: none; }
.checklist li {
  display: flex;
  gap: 12px;
  padding: 13px 0;
  border-bottom: 1px solid var(--line);
  color: var(--ink-soft);
  font-size: 14.8px;
}
.checklist li:last-child { border-bottom: 0; }
.checklist svg { width: 16px; height: 16px; margin-top: 4px; color: var(--accent); flex: none; }

/* ---------- footer ------------------------------------------------------- */

.site-footer { background: var(--navy); color: #b7c6d8; font-size: 14px; }
.footer-top {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) repeat(3, minmax(0, 1fr));
  gap: 40px;
  padding: 60px 0 44px;
}
.footer-brand .brand { color: #fff; }
.footer-brand .brand-mark { background: rgba(255, 255, 255, 0.12); }
.footer-brand .brand-sub { color: #8ea3bb; }
.footer-brand p { margin-top: 16px; max-width: 34ch; color: #93a8c0; font-size: 13.8px; }

.footer-col h4 { color: #8ea3bb; font-size: 11.5px; margin-bottom: 14px; }
.footer-col ul { list-style: none; }
.footer-col li + li { margin-top: 10px; }
.footer-col a { color: #cfdaea; }
.footer-col a:hover { color: #fff; }

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 26px;
  align-items: center;
  justify-content: space-between;
  padding: 22px 0 30px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  color: #8299b3;
  font-size: 12.8px;
}
.footer-bottom a { color: #a9bcd3; }

/* ---------- responsive --------------------------------------------------- */

@media (max-width: 940px) {
  .hero-inner { grid-template-columns: 1fr; gap: 40px; padding: 64px 0 70px; }
  .contact-grid { grid-template-columns: 1fr; gap: 44px; padding: 54px 0 70px; }
  .grid--pair { grid-template-columns: 1fr; }
  .callout { grid-template-columns: 1fr; }
  .cta-inner { grid-template-columns: 1fr; }
  .footer-top { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 34px; }
}

@media (max-width: 760px) {
  .wrap { width: calc(100% - 36px); }
  .section { padding: 58px 0; }
  .header-inner { flex-wrap: wrap; gap: 4px 20px; min-height: 0; padding: 14px 0; }
  .brand { order: 1; }
  .header-actions { order: 2; margin-left: auto; }
  .header-actions .btn--ghost { display: none; }
  .nav { order: 3; width: 100%; margin-left: 0; }
  .nav ul { gap: 20px; overflow-x: auto; padding-bottom: 2px; font-size: 14px; }
  .panel { padding: 22px; }
  .card { padding: 22px; }
  .footer-top { grid-template-columns: 1fr; }
  .stats { gap: 20px 16px; }
  .stat b { font-size: 26px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition: none !important; }
}