:root {
  --cs-yellow: #fed110;
  --cs-navy: #002e5f;
  --cs-dark: #00283f;
  --cs-text: #17324d;
  --cs-muted: #5f7388;
  --cs-border: #d9e1e8;
  --cs-panel: #ffffff;
  --cs-bg: #f5f7fa;
  --cs-soft: #eef3f7;
  --cs-danger: #b42318;
  --cs-shadow: 0 20px 50px rgba(0, 40, 63, 0.08);
  --radius-xl: 24px;
  --radius-lg: 18px;
  --container: 1180px;
  --brand-font: "Brandon Grotesque", "Avenir Next", "Segoe UI", Arial, sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--brand-font);
  color: var(--cs-text);
  background: linear-gradient(180deg, #ffffff 0%, #f6f8fb 100%);
  line-height: 1.5;
}

button, input, select { font: inherit; }
h1, h2, h3, p { margin: 0; }
.cs-wrap { width: min(var(--container), calc(100% - 32px)); margin: 0 auto; }
.cs-hero { padding: 52px 0 26px; }
.cs-hero-grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: 28px; align-items: stretch; }
.cs-hero-card, .cs-proof-card, .cs-calculator-shell, .cs-results-card, .cs-assumptions-card, .cs-cta-card, .cs-budget-card {
  background: var(--cs-panel);
  border: 1px solid rgba(0, 46, 95, 0.08);
  border-radius: var(--radius-xl);
  box-shadow: var(--cs-shadow);
}
.cs-hero-card { padding: 36px; background: radial-gradient(circle at top right, rgba(254, 209, 16, .18), transparent 34%), linear-gradient(135deg, #fff, #f8fbff); }
.cs-eyebrow { display: inline-flex; align-items: center; gap: 8px; padding: 8px 12px; border-radius: 999px; background: rgba(0, 46, 95, .06); color: var(--cs-navy); font-size: 13px; font-weight: 700; letter-spacing: .04em; text-transform: uppercase; }
.cs-eyebrow::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: var(--cs-yellow); }
.cs-hero h1 { margin-top: 18px; font-size: clamp(34px, 5vw, 58px); line-height: .96; letter-spacing: -0.04em; color: var(--cs-dark); }
.cs-hero-copy { margin-top: 18px; font-size: 18px; color: var(--cs-muted); max-width: 720px; }
.cs-hero-meta { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; margin-top: 28px; }
.cs-metric { padding: 16px; border-radius: var(--radius-lg); background: var(--cs-soft); border: 1px solid rgba(0, 46, 95, .08); }
.cs-metric strong { display: block; font-size: 24px; color: var(--cs-dark); line-height: 1; margin-bottom: 8px; }
.cs-metric span { font-size: 13px; color: var(--cs-muted); }
.cs-proof-card { padding: 24px; display: flex; flex-direction: column; justify-content: space-between; gap: 20px; background: linear-gradient(180deg, #002e5f, #00283f); color: #fff; }
.cs-proof-card h2 { font-size: 28px; line-height: 1.02; letter-spacing: -0.03em; }
.cs-proof-card p { color: rgba(255,255,255,.82); font-size: 15px; margin-top: 10px; }
.cs-logo-row { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 10px; }
.cs-logo-row span { border: 1px solid rgba(255,255,255,.12); border-radius: 999px; padding: 10px 12px; text-align: center; font-size: 13px; background: rgba(255,255,255,.04); }
.cs-calculator { padding: 18px 0 70px; }
.cs-calculator-shell { overflow: hidden; }
.cs-mobile-proof { display: none; }
.cs-progress-wrap { padding: 24px 24px 0; background: linear-gradient(180deg, #fbfdff, #fff); }
.cs-progress-meta { display: flex; justify-content: space-between; gap: 12px; margin-bottom: 14px; font-size: 14px; color: var(--cs-muted); }
.cs-progress-track { width: 100%; height: 10px; border-radius: 999px; background: #e7edf3; overflow: hidden; }
.cs-progress-bar { width: 0; height: 100%; border-radius: 999px; background: linear-gradient(90deg, var(--cs-navy), var(--cs-yellow)); transition: width .25s ease; }
.cs-content { display: grid; grid-template-columns: 300px 1fr; min-height: 720px; }
.cs-sidebar { min-width: 0; padding: 28px 22px 28px 24px; background: #f8fbfd; border-right: 1px solid rgba(0, 46, 95, .08); }
.cs-step-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; }
.cs-step-item { display: flex; gap: 14px; min-width: 0; padding: 14px; border-radius: 16px; color: var(--cs-muted); }
.cs-step-item:not(.is-active) { display: none; }
.cs-step-item.is-active { position: relative; z-index: 1; background: #fff; color: var(--cs-dark); box-shadow: 0 10px 25px rgba(0, 40, 63, .05); }
.cs-step-number { width: 34px; height: 34px; border-radius: 50%; display: grid; place-items: center; flex-shrink: 0; border: 1px solid rgba(0, 46, 95, .15); font-weight: 800; font-size: 14px; background: #fff; }
.cs-step-item.is-active .cs-step-number { background: var(--cs-yellow); color: var(--cs-dark); border-color: var(--cs-yellow); }
.cs-step-item.is-complete .cs-step-number { background: var(--cs-navy); color: #fff; border-color: var(--cs-navy); }
.cs-step-item > div { min-width: 0; }
.cs-step-title { font-weight: 700; display: block; min-width: 0; color: inherit; font-size: 15px; margin-bottom: 4px; text-transform: uppercase; letter-spacing: .04em; }
.cs-step-desc { font-size: 13px; color: var(--cs-muted); }
.cs-aside-note, .cs-guidance-box, .cs-room-note, .cs-success-note { margin-top: 22px; padding: 18px; border-radius: 18px; background: rgba(254, 209, 16, .13); border: 1px solid rgba(254, 209, 16, .28); }
.cs-main { min-width: 0; padding: 30px; background: #fff; }
.cs-step-panel { display: none; }
.cs-step-panel.is-active { display: block; animation: fadeIn .25s ease; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: translateY(0); } }
.cs-step-heading { margin-bottom: 26px; }
.cs-step-heading h2 { font-size: clamp(28px, 3vw, 40px); line-height: .98; letter-spacing: -0.04em; color: var(--cs-dark); margin-bottom: 10px; }
.cs-step-heading p { color: var(--cs-muted); max-width: 640px; font-size: 16px; }
.cs-grid { display: grid; gap: 18px; margin-bottom: 18px; }
.cs-grid.two { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.cs-grid.three { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.cs-field, .cs-radio-card { border: 1px solid var(--cs-border); border-radius: 18px; background: #fff; }
.cs-field { padding: 16px; }
.cs-field label { display: block; font-size: 13px; font-weight: 700; color: var(--cs-dark); margin-bottom: 10px; }
.cs-field input, .cs-field select { width: 100%; border: 1px solid #ced8e2; background: #fbfdff; border-radius: 12px; min-height: 50px; padding: 12px 14px; color: var(--cs-dark); outline: none; }
.cs-field input:focus, .cs-field select:focus { border-color: rgba(0, 46, 95, .45); box-shadow: 0 0 0 4px rgba(0, 46, 95, .08); }
.cs-field small, .cs-hint { display: block; margin-top: 8px; color: var(--cs-muted); font-size: 12px; }
.cs-field-error { color: var(--cs-danger); font-size: 12px; margin-top: 8px; display: none; }
.has-error .cs-field-error { display: block; }
.has-error input, .has-error select { border-color: rgba(180, 35, 24, .5); background: #fff6f6; }
.cs-card-grid { display: grid; gap: 16px; }
.cs-radio-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.cs-radio-grid.three { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.cs-radio-card { overflow: hidden; transition: transform .2s ease, box-shadow .2s ease; cursor: pointer; }
.cs-radio-card:hover { transform: translateY(-2px); box-shadow: 0 12px 26px rgba(0, 40, 63, .06); }
.cs-radio-card input { position: absolute; opacity: 0; pointer-events: none; }
.cs-radio-card label { display: block; padding: 18px; cursor: pointer; min-height: 100%; }
.cs-radio-card strong { display: block; color: var(--cs-dark); font-size: 16px; margin-bottom: 8px; }
.cs-radio-card span { color: var(--cs-muted); font-size: 13px; display: block; }
.cs-radio-card.is-selected { border-color: rgba(0, 46, 95, .18); box-shadow: 0 16px 28px rgba(0, 40, 63, .07); }
.cs-radio-card.is-selected label { background: linear-gradient(180deg, rgba(254, 209, 16, .13), rgba(254, 209, 16, .03)); }
.cs-section-label { margin: 26px 0 14px; font-size: 14px; font-weight: 800; letter-spacing: .03em; text-transform: uppercase; color: var(--cs-navy); }
.cs-nav { display: flex; justify-content: space-between; gap: 14px; align-items: center; margin-top: 28px; padding-top: 26px; border-top: 1px solid rgba(0, 46, 95, .08); }
.cs-btns, .cs-cta-actions { display: flex; gap: 12px; align-items: center; flex-wrap: wrap; }
.cs-btn { border: 0; min-height: 50px; padding: 0 20px; border-radius: 999px; font-weight: 800; cursor: pointer; transition: transform .2s ease, opacity .2s ease; }
.cs-btn:hover { transform: translateY(-1px); }
.cs-btn-primary { background: var(--cs-navy); color: #fff; box-shadow: 0 12px 24px rgba(0, 46, 95, .2); }
.cs-btn-secondary { background: #eef3f7; color: var(--cs-dark); }
.cs-btn-accent { background: var(--cs-yellow); color: var(--cs-dark); box-shadow: 0 12px 24px rgba(254, 209, 16, .3); }
.cs-results-shell { display: none; gap: 18px; }
.cs-results-shell.is-visible { display: grid; }
.cs-results-grid { display: grid; grid-template-columns: 1.25fr .75fr; gap: 18px; margin-bottom: 18px; }
.cs-results-card, .cs-budget-card, .cs-assumptions-card, .cs-cta-card { padding: 24px; }
.cs-results-head { display: flex; justify-content: space-between; gap: 16px; align-items: flex-start; margin-bottom: 18px; }
.cs-results-head h3, .cs-budget-card h3, .cs-assumptions-card h3, .cs-cta-card h3 { font-size: 26px; line-height: 1; letter-spacing: -0.03em; color: var(--cs-dark); margin-bottom: 8px; }
.cs-results-head p, .cs-budget-card p, .cs-cta-card p { color: var(--cs-muted); font-size: 15px; }
.cs-badge { display: inline-flex; align-items: center; justify-content: center; min-height: 38px; padding: 0 14px; border-radius: 999px; font-weight: 800; font-size: 13px; background: rgba(0, 46, 95, .08); color: var(--cs-dark); white-space: nowrap; }
.cs-summary-total { display: grid; grid-template-columns: 1fr auto; gap: 16px; align-items: center; border-radius: 24px; padding: 22px; background: linear-gradient(135deg, #002e5f, #003f80); color: #fff; margin-bottom: 20px; }
.cs-summary-total span { display: block; font-size: 13px; text-transform: uppercase; letter-spacing: .06em; color: rgba(255,255,255,.75); margin-bottom: 8px; font-weight: 700; }
.cs-summary-total strong { display: block; font-size: clamp(30px, 4vw, 54px); line-height: .92; letter-spacing: -0.05em; }
.cs-summary-total small { font-size: 16px; color: rgba(255,255,255,.82); }
.cs-summary-total .cs-badge { background: var(--cs-yellow); color: var(--cs-dark); }
.cs-highlight-stack, .cs-budget-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; margin-bottom: 22px; }
.cs-highlight { padding: 18px; border-radius: 18px; background: var(--cs-soft); border: 1px solid rgba(0, 46, 95, .08); }
.cs-highlight em { display: block; font-style: normal; color: var(--cs-muted); font-size: 12px; text-transform: uppercase; letter-spacing: .05em; margin-bottom: 10px; font-weight: 700; }
.cs-highlight strong { display: block; color: var(--cs-dark); font-size: 22px; line-height: 1; margin-bottom: 8px; }
.cs-highlight span { display: block; color: var(--cs-muted); font-size: 13px; }
.cs-breakdown-list, .cs-assumptions-list, .cs-commentary-list { display: grid; gap: 10px; margin: 0; padding: 0; list-style: none; }
.cs-breakdown-item, .cs-assumptions-list li, .cs-commentary-list li { display: grid; grid-template-columns: 1fr auto auto; gap: 10px; align-items: center; padding: 14px 0; border-bottom: 1px solid rgba(0, 46, 95, .08); }
.cs-breakdown-item strong, .cs-assumptions-list strong, .cs-commentary-list strong { color: var(--cs-dark); }
.cs-breakdown-item span, .cs-assumptions-list span, .cs-commentary-list span { color: var(--cs-muted); font-size: 13px; text-align: right; }
.cs-breakdown-item em, .cs-assumptions-list em, .cs-commentary-list em { font-style: normal; font-size: 14px; font-weight: 800; color: var(--cs-dark); text-align: right; }
.cs-budget-output { border-radius: 22px; padding: 22px; background: linear-gradient(135deg, rgba(254, 209, 16, .18), rgba(254, 209, 16, .05)); border: 1px solid rgba(254, 209, 16, .35); }
.cs-budget-output strong { display: block; font-size: clamp(28px, 3.5vw, 46px); line-height: 1; letter-spacing: -0.04em; color: var(--cs-dark); margin: 10px 0; }
.cs-budget-range { display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; margin-top: 14px; color: var(--cs-text); font-size: 14px; font-weight: 700; }
.cs-cta-card { background: linear-gradient(135deg, #002e5f, #00283f); color: #fff; }
.cs-cta-card h3, .cs-cta-card p { color: #fff; }
.cs-hidden { display: none !important; }
.cs-success-note { background: #f0fdf9; border-color: rgba(15, 118, 110, .24); color: var(--cs-text); }

@media (max-width: 1120px) {
  .cs-hero-grid, .cs-content, .cs-results-grid { grid-template-columns: 1fr; }
  .cs-sidebar { border-right: 0; border-bottom: 1px solid rgba(0, 46, 95, .08); }
}
@media (max-width: 820px) {
  .cs-grid.two, .cs-grid.three, .cs-radio-grid, .cs-radio-grid.three, .cs-hero-meta, .cs-highlight-stack, .cs-budget-grid, .cs-logo-row { grid-template-columns: 1fr; }
  .cs-hero { padding: 18px 0 8px; }
  .cs-hero-card { padding-top: 24px; padding-bottom: 24px; }
  .cs-hero h1 { margin-top: 14px; font-size: clamp(32px, 10vw, 42px); letter-spacing: -0.03em; }
  .cs-hero-copy { margin-top: 12px; font-size: 16px; }
  .cs-hero-meta { display: none; }
  .cs-proof-card-desktop { display: none; }
  .cs-calculator { padding: 8px 0 28px; }
  .cs-mobile-proof { display: block; padding: 0 0 44px; }
  .cs-content { min-height: auto; }
  .cs-sidebar { padding-top: 18px; padding-bottom: 14px; }
  .cs-step-list { display: block; padding-bottom: 0; }
  .cs-step-item { justify-content: flex-start; width: 100%; padding: 12px 14px; align-items: center; }
  .cs-step-number { width: 30px; height: 30px; }
  .cs-step-title { overflow: visible; margin-bottom: 0; text-overflow: clip; white-space: normal; font-size: 13px; letter-spacing: .03em; }
  .cs-step-desc, .cs-aside-note { display: none; }
  .cs-main, .cs-sidebar, .cs-proof-card, .cs-hero-card, .cs-progress-wrap, .cs-results-card, .cs-budget-card, .cs-assumptions-card, .cs-cta-card { padding-left: 18px; padding-right: 18px; }
  .cs-nav { flex-direction: column; align-items: stretch; }
  .cs-btns { justify-content: space-between; }
  .cs-summary-total { grid-template-columns: 1fr; }
}