:root {
  --bg: #f5f2ea;
  --paper: #fffdf8;
  --ink: #151513;
  --muted: #67655e;
  --line: #d9d3c7;
  --accent: #ff623f;
  --accent-dark: #ce3f21;
  --dark: #151515;
  --dark-soft: #1d1d1b;
  --stable: #4aa37b;
  --warning: #d7a33c;
  --critical: #d35a45;
  --lost: #824544;
  --max: 1180px;
  --radius: 18px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; }
.section-shell { width: min(var(--max), calc(100% - 44px)); margin: 0 auto; }

.topbar {
  position: sticky;
  top: 0;
  z-index: 50;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 28px;
  min-height: 72px;
  padding: 0 max(22px, calc((100vw - var(--max))/2));
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(21,21,19,.12);
}
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; font-weight: 760; letter-spacing: -.02em; }
.brand-mark { display: grid; place-items: center; width: 34px; height: 34px; background: var(--ink); color: var(--paper); border-radius: 8px; font-size: 12px; letter-spacing: .05em; }
.nav { display: flex; justify-content: center; gap: 24px; }
.nav a, .top-cta { text-decoration: none; font-size: 14px; font-weight: 650; color: #46443f; }
.nav a:hover, .top-cta:hover { color: var(--accent-dark); }
.top-cta { justify-self: end; }

.hero { min-height: 760px; display: grid; grid-template-columns: 1.6fr .8fr; gap: 80px; align-items: center; padding: 112px 0 96px; }
.hero-copy h1 { margin: 16px 0 28px; max-width: 920px; font-size: clamp(48px, 7vw, 92px); line-height: .98; letter-spacing: -.065em; font-weight: 780; }
.eyebrow { margin: 0; color: var(--accent-dark); font-size: 12px; font-weight: 820; text-transform: uppercase; letter-spacing: .15em; }
.hero-lead { max-width: 780px; margin: 0; color: #45433d; font-size: 21px; line-height: 1.55; }
.hero-actions { display: flex; gap: 12px; margin-top: 36px; flex-wrap: wrap; }
.button { display: inline-flex; align-items: center; justify-content: center; min-height: 48px; padding: 0 20px; border-radius: 999px; text-decoration: none; font-weight: 760; font-size: 14px; transition: .2s ease; }
.button.primary { background: var(--ink); color: #fff; }
.button.primary:hover { transform: translateY(-2px); background: var(--accent-dark); }
.button.ghost { border: 1px solid var(--line); background: rgba(255,255,255,.35); }
.button.ghost:hover { border-color: var(--ink); transform: translateY(-2px); }
.hero-card { align-self: center; border: 1px solid var(--line); background: rgba(255,255,255,.38); border-radius: 24px; padding: 26px; box-shadow: 0 24px 70px rgba(70,50,20,.08); }
.signal-line { display: flex; justify-content: space-between; gap: 20px; padding: 14px 0; border-bottom: 1px solid var(--line); font-size: 14px; }
.signal-line strong { font-size: 22px; line-height: 1; }
.gap-visual { position: relative; height: 150px; margin: 28px 0 18px; overflow: hidden; border-radius: 14px; background: linear-gradient(180deg, rgba(255,98,63,.07), rgba(255,98,63,.22)); }
.gap-visual:before, .gap-visual:after { content:""; position:absolute; left: 18px; right: 18px; height: 3px; background: var(--ink); transform-origin: left; border-radius: 99px; }
.gap-visual:before { top: 35px; transform: rotate(11deg); }
.gap-visual:after { bottom: 36px; transform: rotate(-4deg); opacity: .45; }
.gap-bar { position:absolute; left: 68%; width: 3px; top: 30px; bottom: 30px; background: var(--accent); }
.gap-label { position:absolute; z-index:2; left: calc(68% + 12px); top: 56px; color: var(--accent-dark); font-size: 12px; font-weight: 820; text-transform: uppercase; letter-spacing:.1em; }
.hero-card p { margin: 0; color: var(--muted); font-size: 14px; }

.statement-band { background: var(--accent); color: #21100c; padding: 44px 0; }
.statement-grid { display: grid; grid-template-columns: .55fr 1.45fr; gap: 60px; align-items: start; }
.statement-kicker { margin: 8px 0 0; font-weight: 800; font-size: 14px; text-transform: uppercase; letter-spacing: .08em; }
.statement-main { margin: 0; font-size: clamp(26px, 3vw, 42px); line-height: 1.18; letter-spacing: -.035em; }

.content-section { padding: 110px 0; }
.content-section.soft { background: transparent; }
.content-section.soft::before { content:""; position:absolute; left:0; right:0; height:100%; background: rgba(255,255,255,.38); z-index:-1; transform: translateY(-110px); }
.content-section.soft { position: relative; z-index: 0; }
.two-col { display: grid; grid-template-columns: 90px minmax(0, 1fr); gap: 42px; }
.section-index { padding-top: 32px; color: #aaa497; font-size: 13px; font-weight: 800; letter-spacing: .12em; }
.section-index.light { color: rgba(255,255,255,.42); }
.content-section h2, .chart-section h2, .helmark-section h2, .closing h2 { max-width: 900px; margin: 10px 0 26px; font-size: clamp(36px, 5vw, 66px); line-height: 1.03; letter-spacing: -.055em; }
.content-section h3 { margin-top: 42px; font-size: 28px; letter-spacing: -.03em; }
.content-section p { max-width: 900px; color: #4f4c46; font-size: 18px; }
.content-section .intro { max-width: 940px; font-size: 24px; line-height: 1.55; color: var(--ink); }
.definition-box { margin-top: 34px; max-width: 900px; padding: 28px 30px; border-left: 5px solid var(--accent); background: #fffaf2; }
.definition-box p { margin: 0; color: var(--ink); font-size: 20px; }
.definition-box p + p { margin-top: 4px; }

.timeline { display: grid; grid-template-columns: repeat(5, 1fr); margin-top: 48px; border-top: 1px solid var(--line); }
.timeline div { padding: 26px 18px 0 0; border-right: 1px solid var(--line); min-height: 190px; }
.timeline div:last-child { border-right: 0; padding-right:0; }
.timeline span { display: grid; place-items:center; width:30px; height:30px; border:1px solid var(--ink); border-radius:50%; font-size:12px; font-weight:800; }
.timeline b { display:block; margin-top:20px; font-size:15px; }
.timeline small { display:block; margin-top:8px; color:var(--muted); line-height:1.45; font-size:13px; }

.formula-card { max-width: 1000px; margin: 38px 0 44px; padding: 30px; border-radius: var(--radius); background: var(--ink); color: #fff; }
.formula-label { margin:0 0 22px !important; color: rgba(255,255,255,.55) !important; font-size: 11px !important; font-weight:800; text-transform:uppercase; letter-spacing:.14em; }
.formula { display:flex; align-items:center; gap:22px; flex-wrap:wrap; font-size:22px; font-weight:750; }
.formula > b { color: var(--accent); font-size:32px; }
.fraction { display:flex; flex-direction:column; gap:7px; font-weight:600; }
.fraction u { text-decoration:none; border-bottom:1px solid rgba(255,255,255,.45); padding-bottom:7px; }
.fraction small { font-size:13px; color:rgba(255,255,255,.65); }
.formula-card > p:last-child { color:rgba(255,255,255,.66); font-size:14px; margin:22px 0 0; }
.cards.three { display:grid; grid-template-columns:repeat(3,1fr); gap:14px; }
.mini-card { background:var(--paper); border:1px solid var(--line); border-radius:16px; padding:22px; }
.mini-card span { color:var(--accent-dark); font-weight:850; font-size:12px; }
.mini-card h4 { margin:22px 0 10px; font-size:19px; line-height:1.25; letter-spacing:-.02em; }
.mini-card p { margin:0; font-size:14px; line-height:1.55; color:var(--muted); }

.chart-section { padding: 112px 0; background: var(--dark); color: #fff; }
.light-text { color: #ff866b; }
.chart-section h2 { color:#fff; }
.chart-intro { max-width: 920px; color: rgba(255,255,255,.72); font-size:20px; }
.chart-card { margin-top:42px; border:1px solid rgba(255,255,255,.12); border-radius:24px; overflow:hidden; background:#1a1a18; }
.chart-head { display:flex; justify-content:space-between; gap:30px; align-items:flex-start; padding:24px 26px; border-bottom:1px solid rgba(255,255,255,.1); }
.chart-title { display:block; font-weight:760; }
.chart-sub { display:block; margin-top:4px; color:rgba(255,255,255,.45); font-size:12px; }
.chart-legend { display:flex; flex-wrap:wrap; gap:12px; color:rgba(255,255,255,.65); font-size:11px; }
.chart-legend span { display:inline-flex; align-items:center; gap:6px; }
.dot { width:8px; height:8px; border-radius:50%; display:inline-block; }
.dot.stable{background:var(--stable)} .dot.warning{background:var(--warning)} .dot.critical{background:var(--critical)} .dot.lost{background:var(--lost)}
.chart-wrap { padding: 24px; overflow-x:auto; }
.debt-chart { min-width:760px; width:100%; height:auto; }
.zone { opacity:.16; }
.zone-stable{fill:var(--stable)} .zone-warning{fill:var(--warning)} .zone-critical{fill:var(--critical)} .zone-lost{fill:var(--lost)}
.axis{stroke:rgba(255,255,255,.45);stroke-width:1.5}.grid-line{stroke:rgba(255,255,255,.18);stroke-width:1}.grid-line.strong{stroke:rgba(255,255,255,.28);stroke-dasharray:6 5}
.zone-label{fill:rgba(255,255,255,.58);font-size:16px;font-weight:800;letter-spacing:.08em}.axis-label{fill:rgba(255,255,255,.42);font-size:14px}.curve{fill:none;stroke:var(--accent);stroke-width:7;stroke-linecap:round}.point{stroke:#1a1a18;stroke-width:5}.warning-point{fill:#d7a33c}.critical-point{fill:#ff623f}.threshold-line{stroke:#ff866b;stroke-width:2;stroke-dasharray:6 6}.threshold-label{fill:#fff;font-size:16px;font-weight:800}.threshold-copy{fill:rgba(255,255,255,.55);font-size:13px}
.zone-explanations { display:grid; grid-template-columns:1fr 1fr; gap:16px; margin-top:18px; }
.zone-explanations article { display:grid; grid-template-columns:36px 1fr; gap:16px; padding:22px; border:1px solid rgba(255,255,255,.1); border-radius:16px; background:rgba(255,255,255,.03); }
.zone-number { display:grid; place-items:center; width:32px; height:32px; border-radius:50%; border:1px solid rgba(255,255,255,.2); color:#fff; font-size:12px; font-weight:800; }
.zone-explanations h3 { margin:3px 0 7px; font-size:18px; }
.zone-explanations p { margin:0; color:rgba(255,255,255,.6); font-size:14px; line-height:1.5; }

.compare-table { margin-top:34px; border:1px solid var(--line); border-radius:18px; overflow:hidden; background:var(--paper); }
.compare-row { display:grid; grid-template-columns:.65fr 1fr 1fr; border-top:1px solid var(--line); }
.compare-row:first-child { border-top:0; }
.compare-row > div { padding:18px 20px; border-left:1px solid var(--line); font-size:14px; }
.compare-row > div:first-child { border-left:0; font-weight:750; color:#6d685f; }
.compare-head { background:var(--ink); color:#fff; font-weight:800; }
.compare-head > div:first-child { color:#fff; }
.note { margin-top:24px; padding-left:18px; border-left:3px solid var(--accent); font-size:15px !important; }

.symptoms { display:grid; grid-template-columns:1fr 1fr; gap:14px; margin-top:34px; }
.symptoms article { padding:24px; background:var(--paper); border:1px solid var(--line); border-radius:16px; }
.symptoms b { display:block; font-size:18px; letter-spacing:-.02em; }
.symptoms p { margin:9px 0 0; font-size:14px; color:var(--muted); }
.layers { display:grid; grid-template-columns:repeat(3,1fr); gap:14px; margin-top:34px; }
.layers article { padding:24px; border:1px solid var(--line); border-radius:16px; background:rgba(255,255,255,.3); }
.layers span { color:var(--accent-dark); font-size:11px; font-weight:800; }
.layers h3 { margin:28px 0 10px; font-size:21px; }
.layers p { margin:0; font-size:14px; color:var(--muted); }

.dark-block { position:relative; color:#fff; }
.dark-block::before { content:""; position:absolute; z-index:-1; inset:0 calc((100vw - min(var(--max), calc(100vw - 44px)))/-2); background:var(--dark); }
.dark-block p, .dark-block .intro { color:rgba(255,255,255,.72); }
.impact-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:14px; margin-top:40px; }
.impact-grid article { border:1px solid rgba(255,255,255,.11); border-radius:16px; padding:22px; background:rgba(255,255,255,.03); }
.impact-grid strong { display:block; font-size:18px; }
.impact-grid p { margin:8px 0 0; font-size:14px; }

.questions { margin-top:34px; border-top:1px solid var(--line); }
.questions article { display:grid; grid-template-columns:52px 1fr; gap:16px; padding:24px 0; border-bottom:1px solid var(--line); }
.questions span { font-size:12px; font-weight:800; color:var(--accent-dark); }
.questions p { margin:0; font-size:19px; color:var(--ink); }
.principles { margin-top:38px; }
.principles article { display:grid; grid-template-columns:52px 1fr; gap:18px; padding:26px 0; border-top:1px solid var(--line); }
.principles span { color:var(--accent-dark); font-size:12px; font-weight:800; }
.principles h3 { margin:0 0 8px; font-size:22px; }
.principles p { margin:0; font-size:15px; color:var(--muted); }
blockquote { max-width:900px; margin:40px 0; padding:30px 0 30px 28px; border-left:6px solid var(--accent); font-size:30px; line-height:1.35; letter-spacing:-.03em; }

.helmark-section { background:#eae6dc; padding:110px 0; border-top:1px solid #d3cdbf; border-bottom:1px solid #d3cdbf; }
.helmark-grid { display:grid; grid-template-columns:1.45fr .55fr; gap:70px; align-items:center; }
.helmark-section p { max-width:850px; color:#514e47; font-size:17px; }
.helmark-button { margin-top:18px; background:var(--accent); color:#17110f; }
.helmark-button:hover { transform:translateY(-2px); background:#ff7759; }
.helmark-card { padding:28px; border-radius:20px; background:#111; color:#fff; }
.helmark-word { font-size:32px; letter-spacing:.08em; font-weight:900; }
.helmark-card > p { color:rgba(255,255,255,.52); margin:2px 0 20px; font-size:12px; text-transform:uppercase; letter-spacing:.12em; }
.helmark-rule { height:5px; background:var(--accent); border-radius:99px; margin:22px 0; }
.helmark-card ul { list-style:none; padding:0; margin:0; }
.helmark-card li { padding:12px 0; border-top:1px solid rgba(255,255,255,.11); color:rgba(255,255,255,.78); font-size:14px; }

.closing { padding:128px 0; text-align:center; }
.closing .eyebrow { text-align:center; }
.closing h2 { margin-left:auto; margin-right:auto; }
.closing p { max-width:760px; margin:0 auto; color:var(--muted); font-size:20px; }
.back-top { display:inline-block; margin-top:38px; color:var(--accent-dark); font-size:13px; font-weight:800; text-decoration:none; }
footer { background:#111; color:#fff; padding:38px 0; }
.footer-grid { display:grid; grid-template-columns:1fr 1.6fr auto; gap:40px; align-items:start; font-size:13px; }
.footer-grid span, .footer-note { color:rgba(255,255,255,.48); }
.footer-grid a { color:#fff; text-decoration:none; font-weight:700; }

@media (max-width: 980px) {
  .nav { display:none; }
  .hero { grid-template-columns:1fr; min-height:auto; gap:40px; }
  .hero-card { max-width:600px; }
  .statement-grid, .helmark-grid { grid-template-columns:1fr; gap:24px; }
  .cards.three, .layers, .impact-grid { grid-template-columns:1fr 1fr; }
  .timeline { grid-template-columns:1fr; border-top:0; }
  .timeline div { min-height:auto; padding:20px 0; border-right:0; border-top:1px solid var(--line); }
  .footer-grid { grid-template-columns:1fr; gap:16px; }
}

@media (max-width: 720px) {
  .section-shell { width:min(var(--max), calc(100% - 28px)); }
  .topbar { min-height:62px; padding:0 14px; }
  .topbar .top-cta { display:none; }
  .brand { font-size:14px; }
  .hero { padding:72px 0 66px; }
  .hero-copy h1 { font-size:49px; }
  .hero-lead { font-size:18px; }
  .two-col { grid-template-columns:1fr; gap:0; }
  .section-index { padding-top:0; margin-bottom:20px; }
  .content-section, .chart-section, .helmark-section { padding:78px 0; }
  .content-section h2, .chart-section h2, .helmark-section h2, .closing h2 { font-size:40px; }
  .content-section .intro { font-size:20px; }
  .content-section p { font-size:16px; }
  .statement-grid { gap:14px; }
  .cards.three, .layers, .impact-grid, .symptoms, .zone-explanations { grid-template-columns:1fr; }
  .formula { align-items:flex-start; flex-direction:column; }
  .compare-table { overflow-x:auto; }
  .compare-row { min-width:720px; }
  .chart-head { flex-direction:column; }
  .questions article, .principles article { grid-template-columns:38px 1fr; }
  blockquote { font-size:24px; }
  .closing { padding:90px 0; }
}