@import url('https://fonts.googleapis.com/css2?family=Oswald:wght@500;600;700&family=Inter:wght@400;500;600;700&family=IBM+Plex+Mono:wght@400;500;600&display=swap');

:root {
  --bg: #1C1E22;
  --surface: #24272C;
  --surface-raised: #2C3036;
  --paper: #EFEAE0;
  --paper-line: #C9C3B3;
  --paper-line-dim: #B9B29B;
  --paper-muted: #6B6858;
  --ink: #211D17;
  --offwhite: #EDE9E1;
  --muted: #9A9D9F;
  --blue: #3E6D9C;
  --blue-dim: #2E5679;
  --blue-bright: #5A8FC2;
  --rust: #A8461F;
  --olive: #6B7A4F;

  --font-display: 'Oswald', sans-serif;
  --font-body: 'Inter', sans-serif;
  --font-mono: 'IBM Plex Mono', monospace;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--offwhite);
  font-family: var(--font-body);
  line-height: 1.5;
}

a { color: inherit; }
button { font-family: inherit; cursor: pointer; }
img { max-width: 100%; display: block; }

.tap { transition: transform 0.12s ease, background-color 0.12s ease, border-color 0.12s ease; }
.tap:active { transform: scale(0.98); }

.wrap {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 20px;
}
.wrap-narrow {
  max-width: 760px;
  margin: 0 auto;
  padding: 0 20px;
}

.kicker {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--blue-bright);
  margin-bottom: 10px;
}

/* ---------- Nav ---------- */
.site-nav {
  position: sticky;
  top: 0;
  z-index: 40;
  background: rgba(28, 30, 34, 0.92);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--surface-raised);
}
.site-nav-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 0;
}
.site-brand {
  display: flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
}
.site-brand-name {
  font-family: var(--font-display);
  letter-spacing: 0.04em;
  font-weight: 600;
  font-size: 17px;
  color: var(--offwhite);
}
.site-links {
  display: flex;
  align-items: center;
  gap: 6px;
}
.site-link {
  text-decoration: none;
  color: var(--muted);
  font-family: var(--font-display);
  letter-spacing: 0.03em;
  font-size: 13px;
  padding: 8px 12px;
  border-radius: 8px;
}
.site-link:hover { color: var(--offwhite); }
.site-link.active { color: var(--offwhite); background: var(--surface-raised); }
.site-link.cta {
  color: var(--offwhite);
  background: var(--blue-dim);
  border: 1px solid var(--blue);
}
.nav-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--offwhite);
  padding: 6px;
}
@media (max-width: 640px) {
  .site-links { display: none; }
  .site-links.open {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    position: absolute;
    top: 56px;
    left: 0;
    right: 0;
    background: var(--surface);
    border-bottom: 1px solid var(--surface-raised);
    padding: 8px 20px 16px;
    gap: 4px;
  }
  .nav-toggle { display: block; }
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 22px;
  border-radius: 8px;
  font-family: var(--font-display);
  letter-spacing: 0.03em;
  font-size: 14px;
  text-decoration: none;
  border: 1px solid transparent;
}
.btn-primary { background: var(--blue); color: #fff; }
.btn-primary:hover { background: var(--blue-bright); }
.btn-secondary { background: transparent; color: var(--offwhite); border-color: var(--surface-raised); }
.btn-secondary:hover { border-color: var(--blue); }
.btn-block { width: 100%; justify-content: center; }

/* ---------- Hero ---------- */
.hero {
  padding: 76px 0 64px;
  text-align: center;
  border-bottom: 1px solid var(--surface-raised);
  background:
    radial-gradient(600px 300px at 50% 0%, rgba(62,109,156,0.16), transparent 70%);
}
.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(32px, 6vw, 54px);
  line-height: 1.1;
  letter-spacing: 0.01em;
  margin: 0 0 18px;
}
.hero h1 .accent { color: var(--blue-bright); }
.hero p.lead {
  font-size: 17px;
  color: var(--muted);
  max-width: 560px;
  margin: 0 auto 30px;
}
.hero-ctas {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}
.hero-stats {
  display: flex;
  justify-content: center;
  gap: 36px;
  margin-top: 46px;
  flex-wrap: wrap;
}
.hero-stat { text-align: center; }
.hero-stat .num {
  font-family: var(--font-display);
  font-size: 26px;
  color: var(--offwhite);
}
.hero-stat .lbl {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--muted);
  margin-top: 2px;
}

/* ---------- Sections ---------- */
.section { padding: 64px 0; }
.section-alt { background: var(--surface); }
.section-head { text-align: center; max-width: 560px; margin: 0 auto 40px; }
.section-head h2 {
  font-family: var(--font-display);
  font-size: clamp(24px, 4vw, 32px);
  margin: 0 0 12px;
}
.section-head p { color: var(--muted); margin: 0; font-size: 15px; }

/* ---------- Benefit cards ---------- */
.grid-4 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}
@media (min-width: 780px) { .grid-4 { grid-template-columns: repeat(4, 1fr); } }

.benefit-card {
  background: var(--surface);
  border: 1px solid var(--surface-raised);
  border-radius: 12px;
  padding: 22px 18px;
}
.benefit-card .icon-badge {
  width: 38px;
  height: 38px;
  border-radius: 8px;
  background: var(--blue-dim);
  color: var(--blue-bright);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 14px;
}
.benefit-card h3 {
  font-family: var(--font-display);
  font-size: 16px;
  margin: 0 0 6px;
  letter-spacing: 0.02em;
}
.benefit-card p { font-size: 13.5px; color: var(--muted); margin: 0; }

/* ---------- Steps ---------- */
.steps { display: flex; flex-direction: column; gap: 14px; }
.step-row {
  display: flex;
  gap: 18px;
  align-items: flex-start;
  background: var(--surface);
  border: 1px solid var(--surface-raised);
  border-radius: 12px;
  padding: 20px;
}
.step-num-badge {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--blue-bright);
  border: 1px solid var(--blue-dim);
  border-radius: 999px;
  width: 30px;
  height: 30px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}
.step-row h3 {
  font-family: var(--font-display);
  font-size: 17px;
  margin: 2px 0 4px;
}
.step-row p { margin: 0; color: var(--muted); font-size: 14px; }

/* ---------- Guide / Learn cards ---------- */
.grid-3 {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}
@media (min-width: 640px) { .grid-3 { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 960px) { .grid-3 { grid-template-columns: repeat(3, 1fr); } }

.guide-card {
  background: var(--paper);
  color: var(--ink);
  border-radius: 10px;
  padding: 20px;
  text-align: left;
  border: 1px solid var(--surface-raised);
  display: flex;
  flex-direction: column;
  gap: 10px;
  height: 100%;
}
.guide-card .icon-badge {
  width: 34px;
  height: 34px;
  border-radius: 8px;
  background: rgba(168,70,31,0.12);
  color: var(--rust);
  display: flex;
  align-items: center;
  justify-content: center;
}
.guide-card h3 {
  font-family: var(--font-display);
  font-size: 17px;
  margin: 0;
}
.guide-card p { font-size: 13.5px; color: var(--paper-muted); margin: 0; flex-grow: 1; }
.guide-card .read-more {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--rust);
  display: flex;
  align-items: center;
  gap: 4px;
}

/* ---------- Checklist ---------- */
.checklist {
  background: var(--surface);
  border: 1px solid var(--surface-raised);
  border-radius: 12px;
  padding: 24px;
}
.checklist ul { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 12px; }
.checklist li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 14.5px;
}
.checklist .chk {
  width: 18px;
  height: 18px;
  border-radius: 4px;
  border: 1.5px solid var(--olive);
  flex-shrink: 0;
  margin-top: 2px;
}
.checklist a { color: var(--blue-bright); text-decoration: underline; text-underline-offset: 2px; }

/* ---------- CTA banner ---------- */
.cta-banner {
  border-radius: 16px;
  background: linear-gradient(135deg, var(--blue-dim), #24435e);
  padding: 44px 32px;
  text-align: center;
}
.cta-banner h2 {
  font-family: var(--font-display);
  font-size: clamp(22px, 4vw, 30px);
  margin: 0 0 10px;
}
.cta-banner p { color: rgba(237,233,225,0.8); margin: 0 0 24px; }

/* ---------- Modal (guide detail) ---------- */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.6);
  display: flex;
  align-items: flex-end;
  justify-content: center;
  z-index: 50;
}
@media (min-width: 640px) { .modal-backdrop { align-items: center; padding: 16px; } }
.modal-panel {
  background: var(--paper);
  color: var(--ink);
  border-radius: 12px 12px 0 0;
  max-width: 560px;
  width: 100%;
  max-height: 85vh;
  overflow-y: auto;
}
@media (min-width: 640px) { .modal-panel { border-radius: 12px; } }
.modal-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  padding: 22px 22px 4px;
}
.modal-title { font-family: var(--font-display); font-size: 22px; font-weight: 600; margin: 0; }
.modal-close { background: none; border: none; color: var(--ink); padding: 4px; }
.modal-body { padding: 6px 22px 24px; font-size: 15px; line-height: 1.7; }
.modal-body p { margin: 0 0 14px; }
.modal-body ul { margin: 0 0 14px; padding-left: 20px; }
.modal-body li { margin-bottom: 6px; }
.modal-body strong { color: var(--rust); }

/* ---------- Footer ---------- */
.site-footer {
  border-top: 1px solid var(--surface-raised);
  padding: 40px 0 32px;
}
.footer-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}
.footer-tag { color: var(--muted); font-size: 13px; }
.footer-links { display: flex; gap: 18px; }
.footer-links a { color: var(--muted); text-decoration: none; font-size: 13px; }
.footer-links a:hover { color: var(--offwhite); }

.icon { display: inline-block; vertical-align: -2px; }