/* v1.0 visual layer. Content, SEO, lead forms and page navigation stay unchanged. */
:root {
  --paper: var(--canvas); --paper-2: var(--surface); --paper-3: var(--surface-subtle); --paper-4: var(--brand-soft);
  --ink: var(--text); --ink-soft: var(--text-secondary); --body: var(--text-secondary);
  --line-2: var(--line); --bronze: var(--brand-ink); --bronze-soft: var(--brand);
  --emerald: var(--brand-ink); --emerald-br: var(--brand); --emerald-tint: var(--brand-soft);
  --serif: var(--font-family); --sans: var(--font-family); --mono: var(--font-family); --maxw: 1280px;
}
body { font-size: 14px; font-variant-numeric: tabular-nums; }
::selection { background: var(--brand-soft); color: var(--brand-on); }
.nav, .nav.scrolled { background: var(--surface); border-bottom: 1px solid var(--line); box-shadow: none; }
.nav-in { min-height: 72px; padding: 12px 40px; }
.brand b { font-size: 20px; }
.hero { padding: 136px 0 80px; }
.hero::before { background: radial-gradient(ellipse at 85% 20%, var(--brand-soft), transparent 58%); }
.hero-in { grid-template-columns: 1.1fr 1fr; gap: 64px; }
.hero h1 { font-size: clamp(36px, 4.6vw, 64px); font-weight: 650; line-height: 1.2; letter-spacing: -.03em; }
.hero .sub { font-size: 16px; line-height: 1.9; }
.h-sec { font-size: clamp(28px, 3.2vw, 40px); line-height: 1.35; }
.eyebrow { letter-spacing: 2px; }
.band { padding: 80px 0; }
.sec-head { margin-bottom: 40px; }
.panel { background: var(--surface); border-radius: var(--radius); box-shadow: var(--shadow-card); }
.panel-core .dia { background: var(--brand); box-shadow: none; }
.panel-core span { color: var(--brand-on); }
.panel-tag, .cov-label .en, .step .no, table.cmp thead th small, .rowname small, .cc .ct { font-size: 12px; }
.btn { border-radius: var(--radius-control); padding: 12px 24px; font-size: 14px; letter-spacing: 0; }
.btn-ink, .btn-em, .tier .btn.btn-em { background: var(--brand); border-color: var(--brand); color: var(--brand-on); }
.btn-ink:hover, .btn-em:hover, .tier .btn.btn-em:hover { background: var(--brand-hover); color: var(--brand-on); box-shadow: none; }
.btn-out { background: var(--surface); border-color: var(--line-strong); color: var(--text); }
.btn-out:hover { background: var(--brand-soft); color: var(--brand-ink); border-color: var(--brand); }
.btn:focus-visible, a:focus-visible, input:focus-visible, textarea:focus-visible, select:focus-visible { outline: 2px solid var(--brand-ink); outline-offset: 3px; }
.step, .tier, .adv, .guard, .vs-card, .why-grid, .lead-card, .post-card, .table-scroll, .stat-cell, .diff, .diff-card, .kb-feature, .art-cta { border-radius: var(--radius); box-shadow: none; }
.step, .tier, .adv, .guard { padding: 28px 24px; }
.tier.feature { border: 2px solid var(--brand); box-shadow: var(--shadow-card); }
.tier-badge { background: var(--brand-soft); color: var(--brand-ink); border: 1px solid var(--brand); border-radius: var(--radius-badge); }
.chip, .mode-tag, .cat-chip { border-radius: var(--radius-control); }
.chip.em, .chip.gold, .mode-tag, .mode-tag.b { background: var(--brand-soft); color: var(--brand-ink); border-color: var(--line); }
.step:hover, .adv:hover, .guard:hover, .tier:hover, .tier.feature:hover { transform: none; box-shadow: var(--shadow-card); border-color: var(--brand); }
.diff h3 .soft, .diff-card .db { color: #C5CAD2; }
.lead-card { padding: 28px; }
.lead-card input, .lead-card select, .lead-card textarea, .kb-search input { border-radius: var(--radius-control); }
.metrics-grid { gap: 24px; }
.metric { padding: 24px 16px; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); }
.metric:first-child { border-left: 1px solid var(--line); }
.metric .num { font-size: 40px; color: var(--text); }
.hero-foot i { background: var(--brand); box-shadow: 0 0 0 4px var(--brand-soft); }
.art-layout { grid-template-columns: minmax(0, 1fr) 240px; }
.art-body, .art-layout > *, .table-scroll { min-width: 0; max-width: 100%; }
.art-body { overflow-wrap: anywhere; }
@media (max-width: 960px) { .art-layout { grid-template-columns: minmax(0, 1fr); } }
@media (max-width: 1000px) {
  .hero-in { gap: 32px; }
  .tiers { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 28px 20px; }
  .metrics-grid { gap: 16px; }
}
@media (max-width: 800px) {
  .wrap, .hero-in, .nav-in { padding-left: 20px; padding-right: 20px; }
  .hero { padding-top: 112px; }
  .hero-in, .shift-grid, .cta-grid { grid-template-columns: minmax(0, 1fr); }
  .band { padding: 56px 0; }
  .sec-head { margin-bottom: 32px; }
  .hero h1 { font-size: 38px; }
  .metrics-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 520px) {
  .tiers, .steps, .adv-grid, .why-grid, .guard-grid { grid-template-columns: minmax(0, 1fr); }
  .panel { min-height: 340px; }
  #constellation { height: 320px; }
  .lead-card, .diff { padding: 24px 20px; }
  .metric .num { font-size: 32px; }
  .hero-cta { gap: 12px; }
  .hero-cta .btn { padding: 12px 18px; }
}