/* ════════════════════════════════════════════════════════════════
   FEATURE LANDING PAGES — .feat-* (quartet v6)
   Ported from the "Quartet Feature Landing Pages" design handoff.
   Built on the existing quartet tokens (theme.css --*-deep / --quartet-*)
   so the pages adapt to light/dark like the rest of the system.
   Accent is driven by the --res-accent group, set per page via the
   .feat-accent-{cyan,violet,indigo,amber,coral,pos} modifier on .feat-page.
   ════════════════════════════════════════════════════════════════ */

.feat-page {
  --res-accent: var(--quartet-cyan);
  --res-accent-2: var(--quartet-cyan-2);
  --res-accent-fill: var(--quartet-cyan-fill);
  --res-accent-border: var(--quartet-cyan-border);
  --res-accent-ink: var(--bg-deep);
  font-family: var(--font-quartet);
  color: var(--ink-deep);
  width: 100%; min-width: 0; box-sizing: border-box;
  max-width: 1180px; margin: 0 auto; padding: 28px 32px 0;
}

/* ─── Per-page accent groups ───────────────────────────────────── */
.feat-accent-cyan {
  --res-accent: var(--quartet-cyan); --res-accent-2: var(--quartet-cyan-2);
  --res-accent-fill: var(--quartet-cyan-fill); --res-accent-border: var(--quartet-cyan-border);
}
.feat-accent-violet {
  --res-accent: var(--quartet-violet); --res-accent-2: color-mix(in srgb, var(--quartet-violet), white 18%);
  --res-accent-fill: var(--quartet-violet-fill); --res-accent-border: color-mix(in srgb, var(--quartet-violet) 42%, transparent);
}
.feat-accent-indigo {
  --res-accent: var(--quartet-indigo); --res-accent-2: color-mix(in srgb, var(--quartet-indigo), white 18%);
  --res-accent-fill: var(--quartet-indigo-fill); --res-accent-border: color-mix(in srgb, var(--quartet-indigo) 42%, transparent);
}
.feat-accent-amber {
  --res-accent: var(--quartet-amber); --res-accent-2: color-mix(in srgb, var(--quartet-amber), white 18%);
  --res-accent-fill: var(--quartet-amber-fill); --res-accent-border: color-mix(in srgb, var(--quartet-amber) 42%, transparent);
}
.feat-accent-coral {
  --res-accent: var(--quartet-coral); --res-accent-2: color-mix(in srgb, var(--quartet-coral), white 18%);
  --res-accent-fill: var(--quartet-coral-fill); --res-accent-border: color-mix(in srgb, var(--quartet-coral) 42%, transparent);
}
.feat-accent-pos {
  --res-accent: var(--quartet-pos); --res-accent-2: color-mix(in srgb, var(--quartet-pos), white 18%);
  --res-accent-fill: var(--quartet-pos-fill); --res-accent-border: var(--quartet-pos-border);
}

/* ─── Hero ─────────────────────────────────────────────────────── */
.feat-hero {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
  gap: 56px; align-items: center;
  padding: 30px 0 56px;
  margin-bottom: 56px;
  border-bottom: 1px solid var(--line-deep-2);
}

.feat-pill-row { display: flex; align-items: center; gap: 10px; margin-bottom: 24px; flex-wrap: wrap; }
.feat-pill {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 6px 13px 6px 10px; border-radius: 999px;
  background: var(--res-accent-fill); border: 1px solid var(--res-accent-border);
  color: var(--res-accent); font-size: 10.5px; font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.16em;
}
.feat-pill svg { width: 13px; height: 13px; }
.feat-pill.tone-free   { background: var(--quartet-pos-fill); border-color: var(--quartet-pos-border); color: var(--quartet-pos); }
/* Premium pill uses the brand accent (cyan), so it pairs with the green free pill. */
.feat-pill.tone-premium{ background: var(--quartet-cyan-fill); border-color: var(--quartet-cyan-border); color: var(--quartet-cyan); }
.feat-pill-note {
  font-size: 10px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.16em;
  color: var(--muted-deep-2); padding: 5px 11px; border: 1px dashed var(--line-deep-2); border-radius: 999px;
}

.feat-title {
  font-size: 58px; font-weight: 600; letter-spacing: -0.038em; line-height: 1.0;
  color: var(--ink-deep); margin: 0 0 22px; text-wrap: balance;
}
.feat-title .accent { color: var(--res-accent); }

.feat-subtitle {
  font-size: 17px; color: var(--muted-deep); line-height: 1.55; margin: 0; max-width: 52ch;
}
.feat-subtitle b { color: var(--ink-deep-2); font-weight: 500; }

.feat-cta-row { display: flex; gap: 12px; margin-top: 34px; flex-wrap: wrap; }
.feat-cta {
  display: inline-flex; align-items: center; justify-content: center; gap: 9px;
  padding: 14px 24px; border-radius: 4px; cursor: pointer;
  font-family: inherit; font-size: 11.5px; font-weight: 700;
  letter-spacing: 0.12em; text-transform: uppercase; text-decoration: none;
  transition: all .15s; border: 1px solid transparent; white-space: nowrap;
}
.feat-cta svg { width: 14px; height: 14px; transition: transform .2s; }
.feat-cta-primary { background: var(--res-accent); color: var(--res-accent-ink); border-color: var(--res-accent); }
.feat-cta-primary:hover { background: var(--res-accent-2); border-color: var(--res-accent-2); transform: translateY(-1px); }
.feat-cta-primary:hover svg { transform: translateX(3px); }
.feat-cta-ghost { background: transparent; color: var(--ink-deep-2); border-color: var(--line-deep-2); }
.feat-cta-ghost:hover { color: var(--ink-deep); border-color: var(--muted-deep-2); }

.feat-reassure {
  margin-top: 16px; font-size: 12px; color: var(--muted-deep-2);
  display: inline-flex; align-items: center; gap: 8px;
}
.feat-reassure svg { width: 13px; height: 13px; color: var(--quartet-pos); }

/* ─── Hero preview panel ───────────────────────────────────────── */
.feat-hero-preview {
  background: var(--surface-deep); border: 1px solid var(--line-deep-2); border-radius: 8px;
  overflow: hidden; box-shadow: 0 40px 80px -50px rgba(0,0,0,0.7);
}
.feat-prev-head {
  display: flex; align-items: center; justify-content: space-between; gap: 14px;
  padding: 16px 20px; border-bottom: 1px solid var(--line-deep);
}
.feat-prev-head .ttl { font-size: 13px; font-weight: 600; color: var(--ink-deep); letter-spacing: -0.01em; }
.feat-prev-num { font-family: var(--font-quartet-mono); font-size: 15px; font-weight: 600; color: var(--res-accent); font-variant-numeric: tabular-nums; letter-spacing: -0.02em; }
.feat-prev-meta { font-family: var(--font-quartet-mono); font-size: 10.5px; color: var(--muted-deep-2); letter-spacing: 0.02em; }
.feat-prev-live {
  display: inline-flex; align-items: center; gap: 7px;
  font-size: 9px; color: var(--muted-deep); text-transform: uppercase; letter-spacing: 0.16em; font-weight: 600;
}
.feat-prev-live .pulse {
  width: 6px; height: 6px; border-radius: 999px; background: var(--res-accent);
  animation: pulse-glow 2.4s ease-in-out infinite;
}
.feat-prev-total {
  display: flex; align-items: baseline; justify-content: space-between; gap: 12px;
  padding: 18px 20px 16px;
}
.feat-prev-total .lbl { font-size: 10px; color: var(--muted-deep); text-transform: uppercase; letter-spacing: 0.16em; font-weight: 600; }
.feat-prev-total .val {
  font-family: var(--font-quartet-mono); font-size: 26px; font-weight: 500; color: var(--res-accent);
  letter-spacing: -0.03em; font-variant-numeric: tabular-nums;
}
.feat-prev-total .val .per { color: var(--muted-deep-2); font-size: 13px; letter-spacing: 0.02em; }

.feat-prev-bars { display: flex; align-items: flex-end; gap: 5px; height: 46px; padding: 0 20px 16px; }
.feat-prev-bars .b { flex: 1; background: var(--res-accent); opacity: 0.28; border-radius: 2px 2px 0 0; transition: opacity .15s; }
.feat-prev-bars .b.on { opacity: 0.9; }

.feat-prev-rows { border-top: 1px solid var(--line-deep); }
.feat-prev-row {
  display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 12px;
  padding: 11px 20px; border-top: 1px solid var(--line-deep);
}
.feat-prev-row:first-child { border-top: 0; }
.feat-prev-row .tk {
  font-family: var(--font-quartet-mono); font-size: 11px; font-weight: 600; color: var(--ink-deep-2);
  padding: 3px 7px; border: 1px solid var(--line-deep-2); border-radius: 3px; letter-spacing: 0.02em;
}
.feat-prev-row .dt { font-family: var(--font-quartet-mono); font-size: 11px; color: var(--muted-deep-2); letter-spacing: -0.01em; }
.feat-prev-row .amt { font-family: var(--font-quartet-mono); font-size: 13px; color: var(--quartet-pos); font-variant-numeric: tabular-nums; letter-spacing: -0.01em; }
.feat-prev-row.simple { grid-template-columns: 1fr auto; }
.feat-prev-row.simple .k { font-size: 12.5px; color: var(--ink-deep-2); }
.feat-prev-row .amt.pos { color: var(--quartet-pos); }
.feat-prev-row .amt.neg { color: var(--quartet-neg); }
.feat-prev-row .amt.neutral { color: var(--ink-deep-2); }
.feat-prev-row .filterv { font-family: var(--font-quartet-mono); font-size: 12px; color: var(--ink-deep); font-variant-numeric: tabular-nums; }
.feat-prev-foot {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 20px; border-top: 1px solid var(--line-deep-2); background: var(--bg-deep);
}
.feat-prev-foot .lbl { font-size: 11px; color: var(--muted-deep); text-transform: uppercase; letter-spacing: 0.14em; font-weight: 600; }
.feat-prev-foot .val { font-family: var(--font-quartet-mono); font-size: 16px; font-weight: 500; color: var(--ink-deep); font-variant-numeric: tabular-nums; }
.feat-prev-foot .val.pos { color: var(--quartet-pos); }

/* preview: goals */
.feat-prev-goals { padding: 8px 20px 18px; }
.feat-prev-goal { padding: 12px 0; border-top: 1px solid var(--line-deep); }
.feat-prev-goal:first-child { border-top: 0; }
.feat-prev-goal .row { display: flex; align-items: baseline; justify-content: space-between; margin-bottom: 8px; }
.feat-prev-goal .nm { font-size: 12.5px; color: var(--ink-deep); font-weight: 500; }
.feat-prev-goal .pct { font-family: var(--font-quartet-mono); font-size: 12px; color: var(--res-accent); font-variant-numeric: tabular-nums; }
.feat-prev-goal .track { height: 6px; border-radius: 999px; background: var(--surface-deep-hi); overflow: hidden; }
.feat-prev-goal .track .fill { height: 100%; background: var(--res-accent); border-radius: 999px; }
.feat-prev-goal .sub { font-family: var(--font-quartet-mono); font-size: 10.5px; color: var(--muted-deep-2); margin-top: 7px; font-variant-numeric: tabular-nums; }
.feat-prev-goal .sub span { color: var(--faint-deep); }

/* preview: ETF overlap */
.feat-prev-overlap { display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: 12px; padding: 20px; }
.feat-prev-overlap .fund { display: flex; flex-direction: column; align-items: center; gap: 5px; padding: 12px 0; background: var(--bg-deep); border: 1px solid var(--line-deep-2); border-radius: 6px; }
.feat-prev-overlap .fund .tk { font-family: var(--font-quartet-mono); font-size: 15px; font-weight: 600; color: var(--ink-deep); letter-spacing: 0.02em; }
.feat-prev-overlap .fund .sub { font-size: 10px; color: var(--muted-deep-2); }
.feat-prev-overlap .ovl { display: flex; flex-direction: column; align-items: center; justify-content: center; width: 58px; height: 58px; border-radius: 999px; border: 2px solid var(--res-accent-border); background: var(--res-accent-fill); }
.feat-prev-overlap .ovl .n { font-family: var(--font-quartet-mono); font-size: 16px; font-weight: 600; color: var(--res-accent); line-height: 1; }
.feat-prev-overlap .ovl .l { font-size: 8px; color: var(--muted-deep); text-transform: uppercase; letter-spacing: 0.1em; margin-top: 3px; }
.feat-prev-region { display: grid; grid-template-columns: minmax(0,1fr) 80px auto; align-items: center; gap: 12px; padding: 9px 20px; border-top: 1px solid var(--line-deep); }
.feat-prev-region .rg { font-size: 11.5px; color: var(--ink-deep-2); display: inline-flex; align-items: center; gap: 7px; }
.feat-prev-region .rg b { font-family: var(--font-quartet-mono); font-size: 10px; color: var(--muted-deep-2); font-weight: 600; }
.feat-prev-region .bar { height: 5px; border-radius: 999px; background: var(--surface-deep-hi); overflow: hidden; }
.feat-prev-region .bar .fill { height: 100%; background: var(--res-accent); opacity: 0.55; }
.feat-prev-region .pct { font-family: var(--font-quartet-mono); font-size: 11.5px; color: var(--ink-deep); font-variant-numeric: tabular-nums; text-align: right; }

/* preview: achievements */
.feat-prev-ach { display: grid; grid-template-columns: 34px 1fr; align-items: center; gap: 13px; padding: 12px 20px; border-top: 1px solid var(--line-deep); }
.feat-prev-ach:first-child { border-top: 0; }
.feat-prev-ach .ic { width: 34px; height: 34px; display: inline-flex; align-items: center; justify-content: center; font-size: 19px; border-radius: 8px; background: var(--res-accent-fill); border: 1px solid var(--res-accent-border); color: var(--res-accent); }
.feat-prev-ach .ic svg { width: 16px; height: 16px; }
.feat-prev-ach .meta { min-width: 0; }
.feat-prev-ach .t { display: block; font-size: 12.5px; font-weight: 600; color: var(--ink-deep); }
.feat-prev-ach .s { display: block; font-size: 10.5px; color: var(--muted-deep-2); margin-top: 2px; }
.feat-prev-ach.locked { opacity: 0.45; }
.feat-prev-ach.locked .ic { background: var(--bg-deep); border-color: var(--line-deep-2); color: var(--muted-deep-2); }

/* preview: settle */
.feat-prev-settle { padding: 14px 20px 18px; border-top: 1px solid var(--line-deep-2); background: var(--bg-deep); }
.feat-prev-settle .settle-btn {
  width: 100%; padding: 11px; border-radius: 5px; cursor: pointer;
  background: var(--res-accent); color: var(--res-accent-ink); border: 0;
  font-family: inherit; font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.14em;
}

/* preview: AI advisor */
.feat-prev-ai .badge { font-size: 9px; color: var(--muted-deep-2); text-transform: uppercase; letter-spacing: 0.14em; font-weight: 600; }
.feat-prev-ai .ai-body { padding: 16px 20px 18px; }
.feat-prev-ai .ai-label { font-size: 9px; color: var(--res-accent); text-transform: uppercase; letter-spacing: 0.16em; font-weight: 700; margin-bottom: 7px; }
.feat-prev-ai .ai-q { font-size: 13.5px; color: var(--ink-deep); font-weight: 600; margin-bottom: 4px; }
.feat-prev-ai .ai-ctx { font-size: 12px; color: var(--muted-deep); font-style: italic; margin-bottom: 16px; }
.feat-prev-ai .ai-finding { padding: 12px 14px; border-radius: 6px; background: var(--res-accent-fill); border: 1px solid var(--res-accent-border); font-size: 12.5px; color: var(--ink-deep); line-height: 1.45; margin-bottom: 16px; }
.feat-prev-ai .ai-finding-label { display: block; font-size: 8.5px; color: var(--res-accent); text-transform: uppercase; letter-spacing: 0.16em; font-weight: 700; margin-bottom: 6px; }
.feat-prev-ai .ai-bullets { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 9px; }
.feat-prev-ai .ai-bullets li { position: relative; padding-left: 18px; font-size: 12px; color: var(--ink-deep-2); line-height: 1.4; }
.feat-prev-ai .ai-bullets li::before { content: ''; position: absolute; left: 0; top: 6px; width: 7px; height: 7px; border-radius: 999px; background: var(--muted-deep-2); }
.feat-prev-ai .ai-bullets li.tone-pos::before { background: var(--quartet-pos); }
.feat-prev-ai .ai-bullets li.tone-warn::before { background: var(--quartet-amber); }
.feat-prev-ai .ai-bullets li.tone-neg::before { background: var(--quartet-neg); }

/* ─── SEO lead ─────────────────────────────────────────────────── */
.feat-lead {
  max-width: 74ch; margin: 0 auto 64px; text-align: center;
  font-size: 16.5px; line-height: 1.62; color: var(--ink-deep-2); text-wrap: pretty;
}
.feat-lead b { color: var(--ink-deep); font-weight: 600; }

/* ─── Section scaffold ─────────────────────────────────────────── */
.feat-section { margin-bottom: 72px; }
.feat-section-head { text-align: center; margin-bottom: 38px; }
.feat-eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  font-size: 10.5px; color: var(--res-accent);
  text-transform: uppercase; letter-spacing: 0.20em; font-weight: 700;
  margin-bottom: 16px; white-space: nowrap;
}
.feat-eyebrow::before { content: ''; width: 18px; height: 1px; background: var(--res-accent); opacity: 0.6; }
.feat-eyebrow::after  { content: ''; width: 18px; height: 1px; background: var(--res-accent); opacity: 0.6; }
.feat-h2 {
  font-size: 34px; font-weight: 600; letter-spacing: -0.032em; line-height: 1.05;
  color: var(--ink-deep); margin: 0 auto 14px; text-wrap: balance;
}
.feat-section-sub {
  font-size: 15px; color: var(--muted-deep); line-height: 1.55; margin: 0 auto; max-width: 56ch; text-wrap: pretty;
}

/* ─── Feature grid ─────────────────────────────────────────────── */
.feat-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; }
.feat-grid.cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.feat-grid.cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.feat-grid.centered .feat-card { text-align: center; align-items: center; }
.feat-card {
  display: flex; flex-direction: column; align-items: center; text-align: center;
  background: var(--surface-deep); border: 1px solid var(--line-deep-2); border-radius: 8px;
  padding: 28px 26px; transition: border-color .2s, transform .2s;
}
.feat-card:hover { border-color: var(--res-accent-border); transform: translateY(-4px); }
.feat-icon-emoji {
  width: max-content; height: auto; font-size: 30px; line-height: 1; margin-bottom: 18px;
}
/* Feature-grid icons are centered above their (left-aligned) copy. */
.feat-card .feat-icon-emoji { margin-left: auto; margin-right: auto; }
.feat-card-title { font-size: 17px; font-weight: 600; letter-spacing: -0.015em; color: var(--ink-deep); margin-bottom: 9px; }
.feat-card-quote { font-size: 13px; color: var(--res-accent); font-style: italic; line-height: 1.4; margin: 0 0 10px; }
.feat-card-desc { font-size: 13.5px; color: var(--muted-deep); line-height: 1.58; margin: 0; }

/* ─── How it works — numbered steps ────────────────────────────── */
.feat-steps { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 28px 24px; }
.feat-step { text-align: center; padding: 0 8px; }
.feat-step-n {
  display: inline-flex; align-items: center; justify-content: center;
  width: 42px; height: 42px; border-radius: 999px; margin: 0 auto 18px;
  background: var(--res-accent-fill); border: 1px solid var(--res-accent-border);
  color: var(--res-accent); font-family: var(--font-quartet-mono); font-size: 16px; font-weight: 600;
  font-variant-numeric: tabular-nums;
}
.feat-step-title { font-size: 15.5px; font-weight: 600; color: var(--ink-deep); margin-bottom: 8px; letter-spacing: -0.01em; }
.feat-step-desc { font-size: 13px; color: var(--muted-deep); line-height: 1.55; margin: 0 auto; max-width: 30ch; }

/* ─── Personas — Perfect for ───────────────────────────────────── */
.feat-personas { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 14px; }
.feat-persona {
  display: flex; flex-direction: column; align-items: center; text-align: center;
  background: var(--surface-deep); border: 1px solid var(--line-deep-2); border-radius: 8px;
  padding: 30px 22px; transition: border-color .2s, transform .2s;
}
.feat-persona:hover { border-color: var(--res-accent-border); transform: translateY(-4px); }
.feat-persona .feat-icon-emoji { margin-bottom: 16px; }
.feat-persona-title { font-size: 16px; font-weight: 600; color: var(--ink-deep); margin-bottom: 9px; letter-spacing: -0.01em; }
.feat-persona-desc { font-size: 12.5px; color: var(--muted-deep); line-height: 1.55; margin: 0; }

/* ─── Code cards (split options) ───────────────────────────────── */
.feat-codecards { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
.feat-codecard { background: var(--surface-deep); border: 1px solid var(--line-deep-2); border-radius: 8px; padding: 24px 24px 22px; }
.feat-codecard-title { font-size: 16px; font-weight: 600; color: var(--ink-deep); margin-bottom: 8px; letter-spacing: -0.01em; }
.feat-codecard-desc { font-size: 13px; color: var(--muted-deep); line-height: 1.55; margin: 0 0 16px; }
.feat-code-line { display: block; font-family: var(--font-quartet-mono); font-size: 12.5px; color: var(--res-accent); padding: 11px 14px; background: var(--bg-deep); border: 1px solid var(--line-deep); border-radius: 5px; letter-spacing: -0.01em; }

/* ─── Part of Premium / combine band ───────────────────────────── */
.feat-premium {
  position: relative; overflow: hidden; text-align: center;
  background: var(--surface-deep); border: 1px solid var(--line-deep-2); border-radius: 10px;
  padding: 52px 40px; margin-bottom: 72px;
}
.feat-premium::before {
  content: ''; position: absolute; inset: 0; pointer-events: none;
  background: radial-gradient(120% 140% at 50% 0%, var(--res-accent-fill), transparent 60%);
}
.feat-premium > * { position: relative; }
.feat-premium .feat-eyebrow { display: inline-flex; }
.feat-premium .feat-h2 { font-size: 28px; margin-bottom: 16px; }
.feat-premium-list {
  font-size: 14.5px; color: var(--ink-deep-2); line-height: 1.6; max-width: 70ch;
  margin: 0 auto 30px; text-wrap: pretty;
}
.feat-premium-list b { color: var(--res-accent); font-weight: 600; }
.feat-premium .feat-cta-row { justify-content: center; }

/* ─── Callout band (wider, lower-profile) ──────────────────────── */
.feat-callout { position: relative; overflow: hidden; text-align: center; max-width: 860px; margin: 0 auto 72px; background: var(--surface-deep); border: 1px solid var(--line-deep-2); border-radius: 10px; padding: 30px 40px; }
.feat-callout::before { content: ''; position: absolute; inset: 0; pointer-events: none; background: radial-gradient(120% 140% at 50% 0%, var(--res-accent-fill), transparent 60%); }
.feat-callout > * { position: relative; }
.feat-callout-icon { display: inline-flex; align-items: center; justify-content: center; width: 40px; height: 40px; border-radius: 11px; margin-bottom: 14px; background: var(--res-accent-fill); border: 1px solid var(--res-accent-border); }
.feat-callout-icon .em { font-size: 22px; }
.feat-callout .feat-h2 { font-size: 21px; margin-bottom: 10px; }
.feat-callout-text { font-size: 13.5px; color: var(--muted-deep); line-height: 1.6; margin: 0 auto; max-width: 70ch; text-wrap: pretty; }

/* ─── Request a Feature (logged-in form — keeps its live logic) ── */
.feat-request { text-align: center; max-width: 640px; margin: 0 auto; padding: 30px 0 64px; }
.feat-request > .feat-eyebrow { margin: 0 auto 16px; }
.feat-request > h1 { font-size: 40px; font-weight: 600; letter-spacing: -0.035em; line-height: 1.05; color: var(--ink-deep); margin: 0 0 14px; text-wrap: balance; }
.feat-request > .feat-request-lead { font-size: 16px; color: var(--muted-deep); margin: 0 auto; max-width: 50ch; line-height: 1.55; text-wrap: pretty; }

.feat-form-card { position: relative; overflow: hidden; text-align: left; border: 1px solid var(--line-deep-2); border-radius: 14px; padding: 40px 40px 36px; background: var(--surface-deep); box-shadow: 0 40px 80px -56px rgba(0,0,0,0.7); margin-top: 36px; }
.feat-form-card::before { content: ''; position: absolute; inset: 0; pointer-events: none; background: radial-gradient(120% 90% at 50% 0%, var(--res-accent-fill), transparent 55%); }
.feat-form-card > * { position: relative; }

.feat-form { display: flex; flex-direction: column; gap: 22px; }
.feat-form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.feat-field { display: flex; flex-direction: column; gap: 9px; }
.feat-field > label { font-size: 13px; font-weight: 600; color: var(--res-accent); letter-spacing: -0.005em; }
.feat-field .req { color: var(--quartet-neg); margin-left: 3px; }
.feat-input, .feat-select, .feat-textarea {
  width: 100%; box-sizing: border-box; font-family: inherit; font-size: 14.5px; color: var(--ink-deep);
  background: var(--bg-deep); border: 1px solid var(--line-deep-2); border-radius: 8px; padding: 13px 15px;
  transition: border-color .15s, box-shadow .15s, background .15s;
}
.feat-input::placeholder, .feat-textarea::placeholder { color: var(--muted-deep-2); }
.feat-input:hover, .feat-select:hover, .feat-textarea:hover { border-color: var(--muted-deep-2); }
.feat-input:focus, .feat-select:focus, .feat-textarea:focus { outline: none; border-color: var(--res-accent); box-shadow: 0 0 0 3px var(--res-accent-fill); background: var(--surface-deep); }
.feat-textarea { min-height: 168px; resize: vertical; font-family: var(--font-quartet-mono); font-size: 13px; line-height: 1.6; }
.feat-select { appearance: none; -webkit-appearance: none; cursor: pointer;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 24 24' fill='none' stroke='%23565d6e' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
  background-repeat: no-repeat; background-position: right 15px center; padding-right: 40px; }
.feat-charcount { font-size: 11px; color: var(--muted-deep-2); font-family: var(--font-quartet-mono); align-self: flex-end; margin-top: -2px; }
.feat-form-submit { margin-top: 4px; padding: 15px 32px; font-size: 12px; border-radius: 8px; }
.feat-form-submit .button-text { display: inline-flex; align-items: center; gap: 9px; }
.feat-form-submit:disabled { opacity: 0.55; cursor: not-allowed; transform: none; }
.feat-form-foot { margin-top: 18px; font-size: 12px; color: var(--muted-deep-2); display: inline-flex; align-items: center; gap: 8px; }
.feat-form-foot svg { width: 14px; height: 14px; color: var(--res-accent); }

/* login-required banner (anonymous users) */
.feat-form-card .fr-login-banner { text-align: center; padding: 8px 4px; }
.feat-form-card .fr-login-banner h2 { font-size: 21px; font-weight: 600; color: var(--ink-deep); margin: 0 0 10px; letter-spacing: -0.02em; }
.feat-form-card .fr-login-banner > p { font-size: 14px; color: var(--muted-deep); margin: 0 auto 16px; max-width: 42ch; line-height: 1.55; }
.feat-form-card .fr-signup-btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 11px 22px; border-radius: 4px; text-decoration: none;
  font-size: 11px; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase;
  background: var(--res-accent); color: var(--res-accent-ink); border: 1px solid var(--res-accent); transition: all .15s;
}
.feat-form-card .fr-signup-btn svg { width: 13px; height: 13px; flex-shrink: 0; }
.feat-form-card .fr-signup-btn:hover { background: var(--res-accent-2); border-color: var(--res-accent-2); transform: translateY(-1px); }
.feat-form-card .fr-fallback { font-size: 12.5px; color: var(--muted-deep-2); margin: 22px 0 0; }
.feat-form-card .fr-fallback a { color: var(--res-accent); text-decoration: none; }
.feat-form-card .fr-fallback a:hover { text-decoration: underline; }

/* success / error states */
.feat-form-success { text-align: center; padding: 24px 12px 12px; }
.feat-form-success .ok { display: inline-flex; align-items: center; justify-content: center; width: 60px; height: 60px; border-radius: 999px; margin: 0 auto 22px; background: var(--quartet-pos-fill); border: 1px solid var(--quartet-pos-border); color: var(--quartet-pos); }
.feat-form-success .ok svg { width: 30px; height: 30px; }
.feat-form-success p { font-size: 14.5px; color: var(--ink-deep-2); margin: 0 auto; max-width: 44ch; line-height: 1.55; }
.feat-form-error { font-size: 13px; color: var(--quartet-neg); margin: 18px 0 0; text-align: center; }

/* ─── FAQ (native <details> accordion) ─────────────────────────── */
/* Spans the full content width, matching the sections above it. */
.feat-faq { max-width: none; margin: 0; }
.feat-faq-item { border-top: 1px solid var(--line-deep-2); }
.feat-faq-item:last-child { border-bottom: 1px solid var(--line-deep-2); }
.feat-faq-item > summary {
  list-style: none; cursor: pointer; display: flex; align-items: center; justify-content: space-between; gap: 24px;
  padding: 22px 4px; font-size: 17px; font-weight: 500; color: var(--ink-deep);
}
.feat-faq-item > summary::-webkit-details-marker { display: none; }
.feat-faq-item > summary:hover { color: var(--res-accent); }
.feat-faq-toggle { font-family: var(--font-quartet-mono); font-size: 22px; line-height: 1; color: var(--muted-deep); transition: transform .2s, color .2s; flex-shrink: 0; }
.feat-faq-item[open] .feat-faq-toggle { transform: rotate(45deg); color: var(--res-accent); }
.feat-faq-a { padding: 0 4px 24px; font-size: 14px; color: var(--ink-deep-2); line-height: 1.65; max-width: 90ch; margin: 0; }

/* ─── Final CTA band ───────────────────────────────────────────── */
.feat-final {
  position: relative; overflow: hidden; text-align: center;
  border-top: 1px solid var(--line-deep-2);
  padding: 80px 32px 88px; margin: 64px -32px 0;
}
.feat-final::before {
  content: ''; position: absolute; inset: 0; pointer-events: none;
  background: radial-gradient(100% 120% at 50% 100%, var(--res-accent-fill), transparent 62%);
}
.feat-final > * { position: relative; }
.feat-final-title {
  font-size: 40px; font-weight: 600; letter-spacing: -0.035em; line-height: 1.05;
  color: var(--ink-deep); margin: 0 auto 16px; max-width: 20ch; text-wrap: balance;
}
.feat-final-sub { font-size: 16px; color: var(--muted-deep); margin: 0 auto 34px; max-width: 52ch; line-height: 1.55; text-wrap: pretty; }
.feat-final .feat-cta-row { justify-content: center; }
.feat-final .feat-reassure { justify-content: center; margin-top: 22px; }

/* ─── Page disclosure note ─────────────────────────────────────── */
.feat-disclosure {
  max-width: 80ch; margin: 40px auto 0; text-align: center;
  font-size: 11.5px; color: var(--muted-deep-2); line-height: 1.6;
}

/* ─── Related content (existing RelatedArticles / RelatedCalculators,
       restyled to quartet — scoped so global calculator pages are
       untouched) ───────────────────────────────────────────────── */
.feat-related-quartet { margin-top: 64px; }
.feat-related-quartet .related-articles-section,
.feat-related-quartet .related-calculators-section {
  background: none; border: 0; box-shadow: none; padding: 0; margin: 0 0 48px; max-width: none;
}
.feat-related-quartet .related-articles-section h3,
.feat-related-quartet .related-calculators-section h3 {
  font-family: var(--font-quartet); font-size: 19px; font-weight: 600; letter-spacing: -0.02em;
  color: var(--ink-deep); text-align: left; margin: 0 0 6px;
  padding-bottom: 14px; border-bottom: 1px solid var(--line-deep-2);
}
.feat-related-quartet .related-articles-subtitle,
.feat-related-quartet .related-calculators-subtitle {
  font-family: var(--font-quartet); font-size: 13.5px; color: var(--muted-deep);
  text-align: left; margin: 14px 0 22px;
}
.feat-related-quartet .related-articles-grid,
.feat-related-quartet .related-calculators-grid { gap: 14px; margin: 0; }
.feat-related-quartet .related-article-card,
.feat-related-quartet .related-calculator-card {
  background: var(--surface-deep); border: 1px solid var(--line-deep-2); border-radius: 8px;
  padding: 22px 20px; box-shadow: none; transition: border-color .2s, transform .2s;
  display: flex; flex-direction: column;
}
.feat-related-quartet .related-article-card:hover,
.feat-related-quartet .related-calculator-card:hover {
  border-color: var(--res-accent-border); transform: translateY(-3px); box-shadow: none;
}
.feat-related-quartet .related-article-card--upcoming { border-style: dashed; }
.feat-related-quartet .related-article-card--upcoming:hover { transform: none; border-color: var(--line-deep-2); }
.feat-related-quartet .article-title,
.feat-related-quartet .calculator-title {
  font-family: var(--font-quartet); font-size: 14.5px; font-weight: 600; color: var(--ink-deep);
  line-height: 1.34; letter-spacing: -0.01em; margin: 0 0 16px; flex: 1;
}
.feat-related-quartet .read-more,
.feat-related-quartet .try-now {
  font-family: var(--font-quartet); font-size: 11px; font-weight: 700; letter-spacing: 0.12em;
  text-transform: uppercase; color: var(--res-accent); margin-top: auto;
}
.feat-related-quartet .coming-date {
  font-family: var(--font-quartet-mono); font-size: 11px; color: var(--muted-deep-2); margin-top: auto;
}

/* ─── Features index (hub) ─────────────────────────────────────── */
.feat-index-hero { text-align: center; padding: 30px 0 44px; margin-bottom: 48px; border-bottom: 1px solid var(--line-deep-2); }
.feat-index-eyebrow {
  display: inline-flex; align-items: center; gap: 10px; justify-content: center;
  font-size: 10.5px; color: var(--res-accent); text-transform: uppercase; letter-spacing: 0.20em; font-weight: 700; margin-bottom: 16px;
}
.feat-index-eyebrow .pulse { width: 6px; height: 6px; border-radius: 999px; background: var(--res-accent); animation: pulse-glow 2.4s ease-in-out infinite; }
.feat-index-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; margin-bottom: 64px; }
.feat-index-card {
  display: flex; flex-direction: column;
  background: var(--surface-deep); border: 1px solid var(--line-deep-2); border-radius: 8px;
  padding: 28px 26px; text-decoration: none; color: inherit; transition: border-color .2s, transform .2s;
}
.feat-index-card:hover { border-color: var(--res-accent-border); transform: translateY(-4px); }
.feat-index-card .ic { font-size: 30px; line-height: 1; margin-bottom: 18px; }
.feat-index-card .badge {
  align-self: flex-start; font-size: 9px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.14em;
  padding: 3px 9px; border-radius: 999px; margin-bottom: 14px;
}
.feat-index-card .badge.free { color: var(--quartet-pos); background: var(--quartet-pos-fill); border: 1px solid var(--quartet-pos-border); }
.feat-index-card .badge.premium { color: var(--quartet-violet); background: var(--quartet-violet-fill); border: 1px solid color-mix(in srgb, var(--quartet-violet) 44%, transparent); }
.feat-index-card h3 { font-size: 17px; font-weight: 600; letter-spacing: -0.015em; color: var(--ink-deep); margin: 0 0 9px; }
.feat-index-card p { font-size: 13.5px; color: var(--muted-deep); line-height: 1.58; margin: 0 0 18px; }
.feat-index-card .go { display: inline-flex; align-items: center; gap: 7px; margin-top: auto; font-size: 11px; font-weight: 700; letter-spacing: 0.12em; text-transform: uppercase; color: var(--res-accent); }
.feat-index-card .go svg { width: 13px; height: 13px; transition: transform .2s; }
.feat-index-card:hover .go svg { transform: translateX(3px); }

/* ─── Responsive ───────────────────────────────────────────────── */
@media (max-width: 1000px) {
  .feat-hero { grid-template-columns: 1fr; gap: 40px; }
  .feat-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .feat-grid.cols-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .feat-steps { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .feat-personas { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .feat-index-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 640px) {
  .feat-page { padding: 18px 16px 0; }
  .feat-title { font-size: 40px; }
  .feat-h2 { font-size: 27px; }
  .feat-final-title { font-size: 30px; }
  .feat-grid, .feat-steps, .feat-personas, .feat-index-grid { grid-template-columns: 1fr; }
  .feat-grid.cols-4, .feat-grid.cols-2, .feat-codecards { grid-template-columns: 1fr; }
  .feat-final { margin: 64px -16px 0; padding: 60px 20px 64px; }
}

/* ════════════════════════════════════════════════════════════════
   GUIDE PAGES — .gd-* (quartet v6)
   Long-form editorial guides. Layered on the .feat-* primitives
   (container, pill, eyebrow, h2/section-head, CTA, final band, FAQ).
   ════════════════════════════════════════════════════════════════ */
.gd-page { padding-bottom: 0; }

/* hero (centered, editorial — no preview) */
.gd-hero { text-align: center; max-width: 860px; margin: 0 auto 64px; padding: 36px 0 52px; border-bottom: 1px solid var(--line-deep-2); }
.gd-hero .feat-pill { margin: 0 0 22px; }
.gd-hero-title { font-size: 58px; font-weight: 600; letter-spacing: -0.038em; line-height: 1.02; color: var(--ink-deep); margin: 0 0 24px; text-wrap: balance; }
.gd-hero-title .accent { color: var(--res-accent); }
.gd-hero-sub { font-size: 17.5px; color: var(--muted-deep); line-height: 1.62; max-width: 68ch; margin: 0 auto; text-wrap: pretty; }
.gd-hero-sub b { color: var(--ink-deep-2); font-weight: 500; }

.gd-section { margin-bottom: 76px; }
.gd-section:last-of-type { margin-bottom: 64px; }

/* card grid */
.gd-cards { display: grid; gap: 14px; }
.gd-cards.cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.gd-cards.cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.gd-card { display: flex; flex-direction: column; align-items: center; text-align: center; background: var(--surface-deep); border: 1px solid var(--line-deep-2); border-radius: 8px; padding: 30px 26px; transition: border-color .2s, transform .2s; }
.gd-card:hover { border-color: var(--res-accent-border); transform: translateY(-4px); }
.gd-card-emoji { font-size: 30px; line-height: 1; margin-bottom: 18px; }
.gd-card-title { font-size: 17px; font-weight: 600; letter-spacing: -0.015em; color: var(--ink-deep); margin-bottom: 11px; text-wrap: balance; }
.gd-card-desc { font-size: 13.5px; color: var(--muted-deep); line-height: 1.62; margin: 0; text-wrap: pretty; }
.gd-card-desc a, .gd-tl-desc a, .gd-note a, .feat-faq-a a {
  color: var(--res-accent); text-decoration: underline; text-underline-offset: 2px;
  text-decoration-thickness: 1px; text-decoration-color: var(--res-accent-border); transition: text-decoration-color .15s;
}
.gd-card-desc a:hover, .gd-tl-desc a:hover, .gd-note a:hover, .feat-faq-a a:hover { text-decoration-color: var(--res-accent); }

.gd-note { text-align: center; font-size: 14.5px; color: var(--muted-deep); margin: 26px auto 0; max-width: 62ch; line-height: 1.6; text-wrap: pretty; }

/* link cards (tools + further reading) */
.gd-linkcards { display: grid; gap: 14px; }
.gd-linkcards.cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.gd-linkcard { display: flex; flex-direction: column; text-align: center; text-decoration: none; background: var(--surface-deep); border: 1px solid var(--line-deep-2); border-radius: 8px; padding: 26px 24px; transition: border-color .2s, transform .2s; }
.gd-linkcard:hover { border-color: var(--res-accent-border); transform: translateY(-4px); }
.gd-linkcard-title { font-size: 15.5px; font-weight: 600; letter-spacing: -0.01em; color: var(--res-accent); margin-bottom: 11px; text-decoration: underline; text-underline-offset: 3px; text-decoration-thickness: 1px; text-decoration-color: var(--res-accent-border); text-wrap: balance; }
.gd-linkcard:hover .gd-linkcard-title { text-decoration-color: var(--res-accent); }
.gd-linkcard-desc { font-size: 13px; color: var(--muted-deep); line-height: 1.58; margin: 0; text-wrap: pretty; }

/* vertical timeline */
.gd-timeline { max-width: 800px; margin: 0 auto; }
.gd-tl-item { position: relative; display: grid; grid-template-columns: 44px 1fr; gap: 24px; padding-bottom: 38px; }
.gd-tl-item:last-child { padding-bottom: 0; }
.gd-tl-item::before { content: ''; position: absolute; left: 21.5px; top: 50px; bottom: -4px; width: 1px; background: linear-gradient(var(--res-accent-border), var(--line-deep-2)); }
.gd-tl-item:last-child::before { display: none; }
.gd-tl-node { position: relative; z-index: 1; width: 44px; height: 44px; border-radius: 999px; display: inline-flex; align-items: center; justify-content: center; background: var(--res-accent-fill); border: 1.5px solid var(--res-accent); color: var(--res-accent); font-family: var(--font-quartet-mono); font-size: 14px; font-weight: 600; letter-spacing: -0.02em; box-shadow: 0 0 0 5px var(--bg-deep); font-variant-numeric: tabular-nums; }
.gd-tl-node.sm { font-size: 12px; }
.gd-tl-content { padding-top: 5px; min-width: 0; }
.gd-tl-title { font-size: 17.5px; font-weight: 600; letter-spacing: -0.015em; color: var(--ink-deep); margin-bottom: 9px; }
.gd-tl-desc { font-size: 14.5px; color: var(--muted-deep); line-height: 1.66; margin: 0; max-width: 68ch; text-wrap: pretty; }

/* guides hub / overview */
.gd-hub { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; max-width: 920px; margin: 0 auto; }
.gd-hub-card { display: flex; flex-direction: column; text-decoration: none; background: var(--surface-deep); border: 1px solid var(--line-deep-2); border-radius: 12px; padding: 30px 30px 26px; transition: border-color .2s, transform .2s; }
.gd-hub-card:hover { border-color: var(--res-accent-border); transform: translateY(-4px); }
.gd-hub-top { display: flex; align-items: center; justify-content: space-between; gap: 14px; margin-bottom: 20px; }
.gd-hub-icon { width: 52px; height: 52px; border-radius: 13px; display: inline-flex; align-items: center; justify-content: center; background: var(--res-accent-fill); border: 1px solid var(--res-accent-border); color: var(--res-accent); }
.gd-hub-icon .em { font-size: 27px; line-height: 1; }
.gd-hub-badge { font-size: 9.5px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.14em; color: var(--res-accent); background: var(--res-accent-fill); border: 1px solid var(--res-accent-border); padding: 5px 10px; border-radius: 999px; white-space: nowrap; }
.gd-hub-title { font-size: 21px; font-weight: 600; letter-spacing: -0.02em; color: var(--ink-deep); margin-bottom: 10px; }
.gd-hub-desc { font-size: 14px; color: var(--muted-deep); line-height: 1.58; margin: 0 0 22px; text-wrap: pretty; }
.gd-hub-go { margin-top: auto; display: inline-flex; align-items: center; gap: 8px; font-size: 11px; font-weight: 700; letter-spacing: 0.12em; text-transform: uppercase; color: var(--res-accent); }
.gd-hub-go svg { width: 14px; height: 14px; transition: transform .2s; }
.gd-hub-card:hover .gd-hub-go svg { transform: translateX(3px); }

@media (max-width: 1000px) {
  .gd-cards.cols-3, .gd-cards.cols-4, .gd-linkcards.cols-3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 760px) { .gd-hub { grid-template-columns: 1fr; } }
@media (max-width: 640px) {
  .gd-hero-title { font-size: 40px; }
  .gd-hero { padding: 24px 0 40px; margin-bottom: 48px; }
  .gd-cards.cols-3, .gd-cards.cols-4, .gd-linkcards.cols-3 { grid-template-columns: 1fr; }
  .gd-section { margin-bottom: 60px; }
  .gd-tl-item { gap: 18px; }
}

/* ─── Link grid & link cards (shared across feature/blog) ──────── */
.feat-link-grid { display: grid; gap: 14px; margin-top: 20px; }
.feat-link-grid.cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.feat-link-grid.cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.feat-linkcard {
  display: flex; flex-direction: column;
  background: var(--surface-deep); border: 1px solid var(--line-deep-2); border-radius: 8px;
  padding: 22px 20px; text-decoration: none; color: inherit;
  transition: border-color .2s, transform .2s;
}
.feat-linkcard:hover { border-color: var(--res-accent-border); transform: translateY(-3px); }
.feat-linkcard-kind {
  font-family: var(--font-quartet-mono); font-size: 10px; color: var(--muted-deep-2);
  letter-spacing: 0.06em; text-transform: uppercase; margin-bottom: 12px;
}
.feat-linkcard-title {
  font-size: 14.5px; font-weight: 600; color: var(--ink-deep); line-height: 1.34;
  letter-spacing: -0.01em; margin: 0 0 16px; flex: 1;
}
.feat-linkcard-cta {
  display: inline-flex; align-items: center; gap: 7px; margin-top: auto;
  font-size: 11px; font-weight: 700; letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--res-accent);
}
.feat-linkcard-cta svg { width: 13px; height: 13px; transition: transform .2s; }
.feat-linkcard:hover .feat-linkcard-cta svg { transform: translateX(3px); }
@media (max-width: 900px) {
  .feat-link-grid.cols-4, .feat-link-grid.cols-3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 640px) {
  .feat-link-grid.cols-4, .feat-link-grid.cols-3 { grid-template-columns: 1fr; }
}