:root {
  --canvas: #f8f7f2;
  --surface: #ffffff;
  --surface-2: #eef0e7;
  --border: #dedfd5;
  --border-strong: #77796c;
  --ink: #20251c;
  --muted: #555d4e;
  --accent: #304b37;
  --accent-hover: #253b2b;
  --accent-ink: #ffffff;
  --accent-text: #304b37;
  --accent-strong: #274232;
  --accent-soft: #e3ebd9;
  --accent-border: #9cac98;
  --success: #15803d;
  --success-ink: #ffffff;
  --success-soft: #dfebe3;
  --success-strong: #137638;
  --warning: #b45309;
  --warning-ink: #ffffff;
  --warning-soft: #f2e6dd;
  --warning-strong: #a64c08;
  --danger: #b91c1c;
  --danger-ink: #ffffff;
  --danger-soft: #f2dfdf;
  --danger-strong: #b91c1c;
  --chart-1: #18181b;
  --chart-2: #7c285c;
  --chart-3: #7c350c;
  --chart-4: #425605;
  --chart-5: #0b5668;
  --chart-6: #5152a5;

  --font-display: "Instrument Serif", Georgia, serif;
  --font-body: "Inter Variable", ui-sans-serif, system-ui, sans-serif;
  --font-sans: "Inter Variable", ui-sans-serif, system-ui, sans-serif;
  --font-mono: "JetBrains Mono Variable", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --display-weight: 400;
  --display-tracking: -0.02em;
  --eyebrow-tracking: 0.06em;
  --radius-btn: 12px;
  --radius-card: 22px;
  --radius-input: 10px;
}

html[data-theme="dark"] {
  --canvas: #181d18;
  --surface: #222922;
  --surface-2: #2b352b;
  --border: #3f4b3e;
  --border-strong: #819181;
  --ink: #f4f6ed;
  --muted: #b5c1b1;
  --accent: #c4d9ac;
  --accent-hover: #d6e6c1;
  --accent-ink: #1e2e1d;
  --accent-text: #c4d9ac;
  --accent-strong: #d6e6c1;
  --accent-soft: #293d2c;
  --accent-border: #60775f;
  --success: #15803d;
  --success-ink: #ffffff;
  --success-soft: #172f22;
  --success-strong: #58a474;
  --warning: #b45309;
  --warning-ink: #ffffff;
  --warning-soft: #3a2517;
  --warning-strong: #ca854f;
  --danger: #b91c1c;
  --danger-ink: #ffffff;
  --danger-soft: #3b191b;
  --danger-strong: #d57575;
  --chart-1: #a1a1aa;
  --chart-2: #cb70a4;
  --chart-3: #be6436;
  --chart-4: #98911a;
  --chart-5: #159670;
  --chart-6: #1c9ec8;
  --radius-btn: 12px;
  --radius-card: 22px;
  --radius-input: 10px;
}

.duo-wrap { width: min(100% - 3rem, 72rem); margin-inline: auto; }
.duo-nav { border-bottom: 1px solid var(--border); }
.nav-row { display:flex; align-items:center; justify-content:space-between; min-height:4.5rem; gap:1rem; }
.nav-row nav { display:flex; align-items:center; gap:clamp(.5rem,2vw,1.3rem); font-size:.9rem; }
.brand { display:flex; align-items:center; gap:.65rem; font-size:1.45rem; font-weight:750; letter-spacing:-.05em; }
.brand-mark { display:inline-flex; width:1.75rem; height:1.1rem; align-items:center; }
.brand-mark i { width:1rem; height:1rem; border:2px solid var(--accent-text); border-radius:50%; flex:none; }
.brand-mark i + i { margin-left:-.35rem; background:var(--accent-text); }
.duo-wrap h1,.duo-wrap h2,.sheet-title { font-family:var(--font-display); font-weight:var(--display-weight); letter-spacing:-.025em; }
.duo-wrap h1 { font-size:clamp(3rem,8vw,6.4rem); line-height:.91; margin:0 0 1.3rem; }
.duo-wrap h2 { font-size:clamp(1.65rem,4vw,2.6rem); line-height:1; margin:0 0 .7rem; }
.intro { padding:clamp(3rem,9vw,7rem) 0 2.5rem; }
.intro p,.lede { max-width:36rem; color:var(--muted); font-size:clamp(1rem,2vw,1.2rem); line-height:1.65; }
.resource-grid { display:grid; grid-template-columns:repeat(auto-fit,minmax(min(100%,24rem),1fr)); gap:1.5rem; }
.panel { padding:clamp(1rem,3vw,1.6rem); background:var(--surface); border:1px solid var(--border); border-radius:var(--radius-card); }
.resource-card { display:grid; grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr); align-items:center; gap:clamp(1rem,4vw,3rem); }
.resource-card p,.followup p { color:var(--muted); line-height:1.6; margin-bottom:1rem; }
.cover { position:relative; overflow:hidden; border-radius:var(--radius-card); min-height:16rem; background:var(--accent-soft); }
.cover img { width:100%; height:100%; position:absolute; inset:0; object-fit:cover; }
.cover-art { display:grid; place-items:center; isolation:isolate; background:radial-gradient(ellipse at 23% 20%,var(--surface) 0%,var(--accent-soft) 66%,var(--accent-border) 150%); }
.cover-sheet { grid-area:1/1; width:min(56%,17rem); aspect-ratio:4/5; border:1px solid var(--accent-border); border-radius:var(--radius-input); }
.back-sheet { background:var(--accent); transform:rotate(14deg) translateX(.65rem); }
.front-sheet { padding:clamp(.8rem,3vw,2rem); background:var(--surface); transform:rotate(-10deg) translateX(-.45rem); }
.sheet-title { font-size:clamp(1.5rem,4vw,3.25rem); line-height:.92; margin-bottom:1rem; }
.sheet-row { display:flex; align-items:center; gap:.4rem; border-top:1px solid var(--border); padding:.35rem 0; font-size:clamp(.55rem,1.1vw,.78rem); }
.sheet-row svg,.text-link svg { width:1em; height:1em; }
.funnel { display:grid; grid-template-columns:minmax(0,1fr) minmax(0,1fr); align-items:center; gap:clamp(1.5rem,7vw,6rem); padding:clamp(3rem,9vw,6rem) 0 1rem; }
.funnel h1 { font-size:clamp(2.8rem,6.7vw,5.7rem); }
.funnel .cover { min-height:clamp(17rem,48vw,31rem); }
.kicker { color:var(--accent-text); font-weight:700; font-size:.82rem; letter-spacing:.085em; text-transform:uppercase; margin:0 0 1rem; }
.compact { max-width:44rem; margin:0 auto; padding:clamp(3rem,8vw,6rem) 0 1rem; }
.compact > p,.followup { margin-block:1.2rem; }
.form-stack { display:grid; gap:1rem; margin-top:1.5rem; }
.form-stack label,.inline-form label { display:grid; gap:.35rem; font-weight:600; }
.form-stack .input,.inline-form .input { width:100%; min-width:0; padding:.62rem .85rem; }
.form-stack label.check { display:flex; align-items:baseline; gap:.65rem; font-size:.87rem; font-weight:450; }
.check input { accent-color:var(--accent); }
.form-stack .btn { justify-self:start; }
.text-link { display:inline-flex; align-items:center; gap:.4rem; color:var(--accent-text); font-weight:650; text-decoration:underline; text-underline-offset:.25em; }
.notice { background:var(--accent-soft); color:var(--accent-strong); padding:.85rem 1rem; border-radius:var(--radius-input); }
.muted { color:var(--muted); }
.small { font-size:.82rem; }
.small a { text-decoration:underline; }
.workspace { display:grid; gap:1.2rem; padding:3rem 0 1rem; }
.workspace h1 { font-size:clamp(2.5rem,6vw,4.5rem); margin-bottom:.3rem; }
.section-head,.action-row,.inline-form,.stack-row,.lead summary { display:flex; align-items:center; justify-content:space-between; flex-wrap:wrap; gap:.85rem; }
.inline-form { align-items:flex-end; }
.stack-row { padding:.8rem 0; }
.stack-row + .stack-row { border-top:1px solid var(--border); }
.panel.stack-row { padding:1rem; }
.badge { background:var(--accent-soft); color:var(--accent-strong); padding:.22rem .6rem; border-radius:var(--radius-btn); }
.table-wrap { overflow:auto; }
.table-wrap table { width:100%; text-align:left; border-collapse:collapse; }
.table-wrap td,.table-wrap th { padding:.6rem .7rem; border-bottom:1px solid var(--border); }
.lead summary { cursor:pointer; }
.lead > p { margin-top:1rem; overflow-wrap:anywhere; }
.lead summary strong { overflow-wrap:anywhere; }
.checklist ol { list-style:decimal; padding-left:1.35rem; display:grid; gap:.8rem; margin:1.5rem 0; }
.duo-footer { display:flex; justify-content:space-between; gap:1rem; color:var(--muted); font-size:.86rem; margin-top:clamp(3rem,8vw,6rem); padding:1.3rem 0 2rem; border-top:1px solid var(--border); }
@media (max-width:42rem) {
  .duo-wrap { width:calc(100% - 2rem); }
  .funnel,.resource-card { grid-template-columns:1fr; }
  .funnel .cover { min-height:18rem; }
  .cover-sheet { width:min(45%,10rem); }
  .funnel .btn { width:100%; }
}