:root {
    --bg: #FBFAF6;
    --bg-card: #FFFFFF;
    --bg-tint: #F4F2EA;
    --ink: #0E0E0C;
    --ink-2: #2A2A26;
    --muted: #6B6B62;
    --muted-2: #9C9C92;
    --border: #E6E3D8;
    --border-strong: #D8D4C5;
    --gold: #F59E0B;
    --gold-deep: #B45309;
    --gold-tint: #FEF3C7;
    --maxw: 1240px;
    --pad: clamp(20px, 4vw, 56px);
  }

  * { box-sizing: border-box; margin: 0; padding: 0; }

  html { scroll-behavior: smooth; }

  body {
    font-family: 'Geist', system-ui, -apple-system, sans-serif;
    background: var(--bg);
    color: var(--ink);
    font-size: 17px;
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    font-feature-settings: "ss01", "cv11";
    overflow-x: hidden;
  }

  /* ---------- Type ---------- */
  /* Accent for highlighted words in headlines — modern gold treatment, no italic */
  .serif {
    font-family: inherit;
    font-style: normal;
    font-weight: inherit;
    color: var(--gold-deep);
    letter-spacing: inherit;
  }

  /* TrySTACKr — modern brand wordmark */
  .trystackr {
    font-family: 'Geist', system-ui, sans-serif;
    font-style: normal;
    font-weight: 700;
    letter-spacing: -0.045em;
  }
  .trystackr .stk {
    font-weight: 800;
    letter-spacing: -0.02em;
  }

  .eyebrow {
    display: inline-block;
    font-size: 12px;
    font-weight: 500;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--muted);
    padding: 7px 14px;
    border: 1px solid var(--border-strong);
    border-radius: 999px;
    background: var(--bg-card);
  }

  h1, h2, h3, h4 {
    font-weight: 600;
    letter-spacing: -0.025em;
    line-height: 1.05;
    color: var(--ink);
  }

  h1 {
    font-size: clamp(44px, 7vw, 92px);
    line-height: 0.98;
    letter-spacing: -0.035em;
    font-weight: 600;
  }

  h2 {
    font-size: clamp(34px, 4.6vw, 60px);
    line-height: 1.02;
    letter-spacing: -0.03em;
  }

  h3 {
    font-size: clamp(22px, 2.2vw, 28px);
    letter-spacing: -0.02em;
  }

  p { color: var(--ink-2); }

  .lead {
    font-size: clamp(17px, 1.4vw, 20px);
    line-height: 1.55;
    color: var(--muted);
    max-width: 620px;
  }

  /* ---------- Layout ---------- */
  .container {
    max-width: var(--maxw);
    margin: 0 auto;
    padding: 0 var(--pad);
  }

  section {
    padding: clamp(80px, 10vw, 140px) 0;
    border-bottom: 1px solid var(--border);
  }

  /* ---------- Nav ---------- */
  nav {
    position: sticky;
    top: 0;
    z-index: 50;
    background: rgba(251, 250, 246, 0.85);
    backdrop-filter: saturate(140%) blur(14px);
    -webkit-backdrop-filter: saturate(140%) blur(14px);
    border-bottom: 1px solid var(--border);
  }

  .nav-inner {
    max-width: var(--maxw);
    margin: 0 auto;
    padding: 16px var(--pad);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 32px;
  }

  .logo {
    font-size: 19px;
    font-weight: 600;
    letter-spacing: -0.02em;
    color: var(--ink);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 9px;
  }

  .logo-mark {
    width: 26px;
    height: 26px;
    background: var(--ink);
    border-radius: 6px;
    position: relative;
    flex-shrink: 0;
  }

  .logo-mark::before, .logo-mark::after {
    content: '';
    position: absolute;
    left: 6px;
    right: 6px;
    height: 2px;
    background: var(--gold);
    border-radius: 2px;
  }

  .logo-mark::before { top: 8px; }
  .logo-mark::after { top: 13px; }

  .logo-mark span {
    position: absolute;
    top: 18px;
    left: 6px;
    width: 10px;
    height: 2px;
    background: var(--gold);
    border-radius: 2px;
  }

  .logo .accent {
    color: var(--gold);
  }

  .nav-links {
    display: flex;
    gap: 32px;
    list-style: none;
  }

  .nav-links a {
    color: var(--ink-2);
    text-decoration: none;
    font-size: 15px;
    font-weight: 500;
    transition: color .15s;
  }

  .nav-links a:hover { color: var(--gold-deep); }

  @media (max-width: 740px) {
    .nav-links { display: none; }
  }

  .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 13px 22px;
    border-radius: 10px;
    font-family: inherit;
    font-size: 15px;
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
    border: 1px solid transparent;
    transition: transform .12s, background .15s, border-color .15s, box-shadow .15s;
    white-space: nowrap;
  }

  .btn-primary {
    background: var(--ink);
    color: #FBFAF6;
  }
  .btn-primary:hover {
    background: #2a2a26;
    transform: translateY(-1px);
  }

  .btn-gold {
    background: var(--gold);
    color: var(--ink);
    font-weight: 600;
  }
  .btn-gold:hover {
    background: #FBB13C;
    transform: translateY(-1px);
    box-shadow: 0 8px 22px -8px rgba(245, 158, 11, .55);
  }

  .btn-ghost {
    background: var(--bg-card);
    color: var(--ink);
    border-color: var(--border-strong);
  }
  .btn-ghost:hover {
    border-color: var(--ink);
  }

  /* ---------- Hero ---------- */
  .hero {
    padding-top: clamp(80px, 10vw, 130px);
    padding-bottom: clamp(60px, 8vw, 110px);
    position: relative;
    overflow: hidden;
  }

  .hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
      radial-gradient(circle at 18% 18%, rgba(245, 158, 11, 0.07), transparent 45%),
      radial-gradient(circle at 88% 60%, rgba(245, 158, 11, 0.05), transparent 50%);
    pointer-events: none;
  }

  .hero-grid {
    display: grid;
    grid-template-columns: 1.4fr 1fr;
    gap: clamp(40px, 6vw, 80px);
    align-items: center;
    position: relative;
  }

  @media (max-width: 960px) {
    .hero-grid { grid-template-columns: 1fr; }
  }

  .hero h1 {
    margin-top: 28px;
    margin-bottom: 28px;
  }

  .hero .lead {
    font-size: clamp(18px, 1.5vw, 21px);
    color: var(--muted);
    max-width: 540px;
    margin-bottom: 36px;
  }

  .hero-cta {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
  }

  .hero-stats {
    display: grid;
    grid-template-rows: 1fr 1fr;
    gap: 18px;
    height: 100%;
  }

  .stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 18px;
    padding: 32px 30px;
    position: relative;
    overflow: hidden;
    transition: border-color .2s, transform .2s;
  }

  .stat-card:hover {
    border-color: var(--border-strong);
    transform: translateY(-2px);
  }

  .stat-card .label {
    font-size: 11px;
    font-weight: 500;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--muted);
    margin-bottom: 16px;
  }

  .stat-card .figure {
    font-family: 'Geist', system-ui, sans-serif;
    font-style: normal;
    font-weight: 800;
    font-size: clamp(54px, 6vw, 78px);
    line-height: 0.95;
    letter-spacing: -0.055em;
    color: var(--ink);
    font-feature-settings: "tnum", "ss01", "cv11";
  }

  .stat-card .figure .accent { color: var(--gold); }

  .stat-card .desc {
    margin-top: 10px;
    font-size: 14px;
    color: var(--muted);
    line-height: 1.5;
  }

  .stat-card .corner {
    position: absolute;
    top: 18px;
    right: 18px;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--gold);
    box-shadow: 0 0 0 4px rgba(245, 158, 11, 0.18);
  }

  /* ---------- Section header ---------- */
  .section-head {
    margin-bottom: clamp(48px, 6vw, 72px);
    max-width: 760px;
  }

  .section-head h2 {
    margin-top: 22px;
  }

  .section-head .lead {
    margin-top: 22px;
  }

  /* ---------- Problem stats ---------- */
  .problem-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0;
    border: 1px solid var(--border);
    border-radius: 20px;
    overflow: hidden;
    background: var(--bg-card);
  }

  @media (max-width: 900px) { .problem-grid { grid-template-columns: repeat(2, 1fr); } }
  @media (max-width: 520px) { .problem-grid { grid-template-columns: 1fr; } }

  .problem-stat {
    padding: 36px 30px;
    border-right: 1px solid var(--border);
    position: relative;
  }
  .problem-stat:last-child { border-right: none; }

  @media (max-width: 900px) {
    .problem-stat:nth-child(2) { border-right: none; }
    .problem-stat:nth-child(1), .problem-stat:nth-child(2) { border-bottom: 1px solid var(--border); }
  }
  @media (max-width: 520px) {
    .problem-stat { border-right: none; border-bottom: 1px solid var(--border); }
    .problem-stat:last-child { border-bottom: none; }
  }

  .problem-stat .figure {
    font-family: 'Geist', system-ui, sans-serif;
    font-style: normal;
    font-weight: 800;
    font-size: clamp(40px, 4.5vw, 56px);
    line-height: 1;
    letter-spacing: -0.045em;
    color: var(--gold);
    font-feature-settings: "tnum", "ss01";
  }
  .problem-stat .label {
    margin-top: 14px;
    font-size: 14px;
    color: var(--muted);
    line-height: 1.5;
  }

  .problem-pull {
    margin-top: 40px;
    padding: 28px 32px;
    background: var(--ink);
    color: #FBFAF6;
    border-radius: 16px;
    font-size: clamp(17px, 1.5vw, 19px);
    line-height: 1.55;
    max-width: 780px;
  }
  .problem-pull em {
    color: var(--gold);
    font-family: inherit;
    font-style: normal;
    font-weight: 700;
  }

  /* ---------- Solution: features + dashboard ---------- */
  .solution-grid {
    display: grid;
    grid-template-columns: 1fr 1.1fr;
    gap: clamp(40px, 6vw, 72px);
    align-items: start;
  }
  @media (max-width: 960px) { .solution-grid { grid-template-columns: 1fr; } }

  .feature-list {
    display: grid;
    gap: 28px;
  }

  .feature {
    display: grid;
    grid-template-columns: 44px 1fr;
    gap: 18px;
    padding-bottom: 28px;
    border-bottom: 1px solid var(--border);
  }
  .feature:last-child { border-bottom: none; padding-bottom: 0; }

  .feature-icon {
    width: 44px;
    height: 44px;
    border-radius: 11px;
    background: var(--gold-tint);
    color: var(--gold-deep);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
  }

  .feature h3 {
    font-size: 18px;
    margin-bottom: 6px;
    letter-spacing: -0.015em;
    font-weight: 600;
  }

  .feature p {
    font-size: 15px;
    color: var(--muted);
    line-height: 1.55;
  }

  /* ---------- Dashboard mockup ---------- */
  .dashboard {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 20px;
    padding: 28px;
    box-shadow:
      0 1px 0 rgba(255,255,255,0.6) inset,
      0 30px 60px -30px rgba(14, 14, 12, 0.18),
      0 8px 22px -12px rgba(14, 14, 12, 0.1);
    position: relative;
  }

  .dashboard-head {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    margin-bottom: 22px;
  }

  .dashboard-head h4 {
    font-size: 18px;
    font-weight: 600;
    letter-spacing: -0.015em;
  }

  .dashboard-head .badge {
    font-size: 12px;
    font-weight: 500;
    color: var(--gold-deep);
    display: inline-flex;
    align-items: center;
    gap: 6px;
  }

  .debt-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 14px 0;
    border-bottom: 1px solid var(--border);
  }
  .debt-row:last-of-type { border-bottom: none; }

  .debt-row .name {
    font-size: 14.5px;
    font-weight: 500;
    color: var(--ink);
  }

  .debt-row .meta {
    font-size: 12px;
    color: var(--muted);
    margin-top: 2px;
  }

  .debt-row .amount {
    font-family: 'Geist Mono', ui-monospace, monospace;
    font-style: normal;
    font-size: 19px;
    font-weight: 600;
    color: var(--ink);
    letter-spacing: -0.02em;
    font-feature-settings: "tnum", "zero";
  }

  .debt-row .bar {
    height: 4px;
    border-radius: 2px;
    background: linear-gradient(to right, var(--gold), var(--gold-deep));
    margin-top: 4px;
  }

  .savings {
    margin-top: 22px;
    padding: 20px;
    background: var(--gold-tint);
    border-radius: 12px;
  }

  .savings .label {
    font-size: 12px;
    font-weight: 500;
    color: var(--gold-deep);
    letter-spacing: 0.08em;
    text-transform: uppercase;
  }

  .savings .figure {
    margin-top: 6px;
    font-family: 'Geist', system-ui, sans-serif;
    font-style: normal;
    font-weight: 800;
    font-size: 38px;
    line-height: 1;
    letter-spacing: -0.045em;
    color: var(--ink);
    font-feature-settings: "tnum", "ss01";
  }

  .savings .sub {
    margin-top: 6px;
    font-size: 13px;
    color: #6E4D0A;
  }

  /* ---------- Method (steps) ---------- */
  .steps {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 28px;
  }

  @media (max-width: 900px) { .steps { grid-template-columns: repeat(2, 1fr); } }
  @media (max-width: 520px) { .steps { grid-template-columns: 1fr; } }

  .step {
    padding-top: 22px;
    border-top: 1px solid var(--ink);
  }

  .step .num {
    font-family: 'Geist Mono', ui-monospace, monospace;
    font-style: normal;
    font-weight: 600;
    font-size: 13px;
    color: var(--gold-deep);
    letter-spacing: 0;
    text-transform: uppercase;
  }

  .step h3 {
    margin-top: 14px;
    font-size: 22px;
    font-weight: 600;
    letter-spacing: -0.02em;
  }

  .step p {
    margin-top: 10px;
    font-size: 15px;
    color: var(--muted);
    line-height: 1.55;
  }

  /* ---------- Opportunity grid ---------- */
  .opp-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 22px;
  }
  @media (max-width: 900px) { .opp-grid { grid-template-columns: repeat(2, 1fr); } }
  @media (max-width: 560px) { .opp-grid { grid-template-columns: 1fr; } }

  .opp-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 18px;
    padding: 30px 28px;
    transition: border-color .2s, transform .2s;
  }
  .opp-card:hover {
    border-color: var(--border-strong);
    transform: translateY(-2px);
  }

  .opp-card.dark {
    background: var(--ink);
    color: #FBFAF6;
    border-color: var(--ink);
  }
  .opp-card.dark .opp-figure { color: var(--gold); }
  .opp-card.dark h3 { color: #FBFAF6; }
  .opp-card.dark p { color: #BCBCB2; }

  .opp-figure {
    font-family: 'Geist', system-ui, sans-serif;
    font-style: normal;
    font-weight: 800;
    font-size: clamp(40px, 4.4vw, 54px);
    line-height: 1;
    letter-spacing: -0.045em;
    color: var(--gold);
    margin-bottom: 18px;
    font-feature-settings: "tnum", "ss01";
  }

  .opp-card h3 {
    font-size: 17px;
    font-weight: 600;
    letter-spacing: -0.015em;
    margin-bottom: 8px;
  }

  .opp-card p {
    font-size: 14.5px;
    color: var(--muted);
    line-height: 1.55;
  }

  /* ---------- Comparison table ---------- */
  .table-wrap {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 18px;
    overflow: hidden;
    overflow-x: auto;
  }

  table.compare {
    width: 100%;
    border-collapse: collapse;
    min-width: 640px;
  }

  table.compare th, table.compare td {
    padding: 20px 22px;
    text-align: left;
    border-bottom: 1px solid var(--border);
    font-size: 14.5px;
  }

  table.compare th {
    font-size: 11px;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--muted);
    font-weight: 500;
    background: var(--bg-tint);
  }

  table.compare th:not(:first-child),
  table.compare td:not(:first-child) {
    text-align: center;
  }

  table.compare tr:last-child td { border-bottom: none; }

  table.compare .company {
    font-weight: 600;
    color: var(--ink);
    font-size: 15px;
  }

  table.compare .company .tag {
    display: inline-block;
    margin-left: 8px;
    font-size: 10px;
    letter-spacing: 0.12em;
    color: var(--gold-deep);
    background: var(--gold-tint);
    padding: 3px 7px;
    border-radius: 4px;
    font-weight: 600;
    text-transform: uppercase;
  }

  table.compare .us {
    background: linear-gradient(to right, rgba(245, 158, 11, 0.06), transparent);
  }

  .check { color: var(--gold-deep); font-weight: 700; font-size: 16px; }
  .x { color: var(--muted-2); font-weight: 400; }

  /* ---------- Trends ---------- */
  .trends {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 22px;
  }
  @media (max-width: 900px) { .trends { grid-template-columns: repeat(2, 1fr); } }
  @media (max-width: 560px) { .trends { grid-template-columns: 1fr; } }

  .trend {
    padding: 28px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 16px;
    transition: border-color .2s, transform .2s;
  }
  .trend:hover { border-color: var(--border-strong); transform: translateY(-2px); }

  .trend-icon {
    width: 36px;
    height: 36px;
    border-radius: 9px;
    background: var(--gold-tint);
    color: var(--gold-deep);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 16px;
  }

  .trend h3 {
    font-size: 17px;
    font-weight: 600;
    letter-spacing: -0.015em;
    margin-bottom: 8px;
  }

  .trend p {
    font-size: 14.5px;
    color: var(--muted);
    line-height: 1.55;
  }

  /* ---------- CTA ---------- */
  .cta {
    background: var(--ink);
    color: #FBFAF6;
    border: none;
    border-radius: 24px;
    padding: clamp(60px, 8vw, 100px) clamp(28px, 5vw, 60px);
    text-align: center;
    position: relative;
    overflow: hidden;
    margin-bottom: 0;
  }

  .cta::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
      radial-gradient(circle at 20% 30%, rgba(245, 158, 11, 0.18), transparent 45%),
      radial-gradient(circle at 80% 75%, rgba(245, 158, 11, 0.12), transparent 50%);
    pointer-events: none;
  }

  .cta-inner { position: relative; max-width: 720px; margin: 0 auto; }

  .cta .eyebrow {
    color: var(--gold);
    background: rgba(245, 158, 11, 0.1);
    border-color: rgba(245, 158, 11, 0.25);
  }

  .cta h2 {
    color: #FBFAF6;
    margin-top: 22px;
  }

  .cta h2 em {
    color: var(--gold);
    font-family: inherit;
    font-weight: inherit;
    font-style: normal;
    letter-spacing: inherit;
  }

  .cta p {
    color: #BCBCB2;
    margin-top: 22px;
    font-size: 18px;
    line-height: 1.55;
  }

  .cta-buttons {
    margin-top: 40px;
    display: flex;
    gap: 12px;
    justify-content: center;
    flex-wrap: wrap;
  }

  .cta-trust {
    margin-top: 28px;
    display: flex;
    gap: 24px;
    justify-content: center;
    flex-wrap: wrap;
    font-size: 13px;
    color: #8C8C82;
  }
  .cta-trust span::before { content: '✓ '; color: var(--gold); }

  /* ---------- Footer ---------- */
  footer {
    padding: clamp(60px, 8vw, 100px) 0 32px;
  }

  .foot-grid {
    display: grid;
    grid-template-columns: 1.4fr 1fr 1fr 1fr;
    gap: 48px;
  }
  @media (max-width: 800px) { .foot-grid { grid-template-columns: 1fr 1fr; } }
  @media (max-width: 480px) { .foot-grid { grid-template-columns: 1fr; } }

  .foot-brand h4 {
    font-size: 21px;
    margin-bottom: 18px;
    font-weight: 600;
  }
  .foot-brand h4 .accent { color: var(--gold); }
  .foot-brand p {
    font-size: 14.5px;
    color: var(--muted);
    line-height: 1.6;
    max-width: 360px;
    margin-bottom: 18px;
  }
  .foot-brand .founder {
    font-size: 13px;
    color: var(--muted-2);
  }

  .foot-col h5 {
    font-size: 11px;
    font-weight: 500;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--muted-2);
    margin-bottom: 18px;
  }

  .foot-col ul { list-style: none; display: grid; gap: 11px; }
  .foot-col a {
    text-decoration: none;
    color: var(--ink-2);
    font-size: 14.5px;
    transition: color .15s;
  }
  .foot-col a:hover { color: var(--gold-deep); }

  .foot-bottom {
    margin-top: 60px;
    padding-top: 28px;
    border-top: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 20px;
    font-size: 13px;
    color: var(--muted-2);
  }
  .foot-bottom a { color: var(--muted-2); text-decoration: none; margin-left: 18px; }
  .foot-bottom a:hover { color: var(--ink); }

  .disclaimer {
    margin-top: 28px;
    padding: 20px 24px;
    background: var(--bg-tint);
    border-radius: 12px;
    font-size: 12.5px;
    color: var(--muted);
    line-height: 1.6;
    border: 1px solid var(--border);
  }

  /* ---------- Subtle reveal animation ---------- */
  .reveal {
    opacity: 0;
    transform: translateY(14px);
    transition: opacity .7s ease-out, transform .7s ease-out;
  }
  .reveal.in { opacity: 1; transform: translateY(0); }
  @media (prefers-reduced-motion: reduce) {
    .reveal { opacity: 1; transform: none; transition: none; }
  }