:root {
  --ink: #101828;
  --text: #344054;
  --muted: #667085;
  --line: #d9dde4;
  --wash: #f5f7f9;
  --blue: #0969da;
  --blue-dark: #0755b4;
  --navy: #0b1d35;
  --teal: #1bc7b1;
  --white: #fff;
  --max: 1120px;
}
* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
body {
  margin: 0;
  color: var(--text);
  background: var(--white);
  font-family:
    Inter,
    ui-sans-serif,
    system-ui,
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    sans-serif;
  line-height: 1.65;
}
a {
  color: var(--blue);
}
img {
  max-width: 100%;
  height: auto;
}
.container {
  width: min(calc(100% - 40px), var(--max));
  margin: auto;
}
.skip-link {
  position: absolute;
  left: -9999px;
}
.skip-link:focus {
  left: 16px;
  top: 16px;
  z-index: 100;
  background: #fff;
  padding: 10px 14px;
  border: 2px solid var(--blue);
}
.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255, 255, 255, 0.96);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(14px);
}
.header-inner {
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.logo {
  display: block;
  width: 174px;
}
.nav {
  display: flex;
  align-items: center;
  gap: 24px;
}
.nav a {
  text-decoration: none;
  color: var(--text);
  font-size: 14px;
  font-weight: 750;
}
.nav a:hover {
  color: var(--blue);
}
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  color: var(--ink);
  font-weight: 800;
  text-decoration: none;
}
.button-primary {
  border-color: var(--blue);
  background: var(--blue);
  color: #fff;
}
.button-primary:hover {
  background: var(--blue-dark);
  color: #fff;
}
.nav .button-primary {
  border-color: #1976d2;
  background: #1976d2;
  color: #fff;
}
.nav .button-primary:hover {
  border-color: #125fa8;
  background: #125fa8;
  color: #fff;
}
.hero {
  padding: 84px 0 70px;
  background: linear-gradient(145deg, #f6f9fc 0%, #fff 62%);
}
.eyebrow {
  margin: 0 0 16px;
  color: var(--blue);
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}
.hero h1 {
  max-width: 850px;
  margin: 0;
  color: var(--ink);
  font-size: clamp(40px, 6vw, 70px);
  line-height: 1.03;
  letter-spacing: -0.045em;
}
.hero-copy {
  max-width: 760px;
  margin: 24px 0 0;
  font-size: 20px;
  color: var(--muted);
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}
.crumbs {
  padding-top: 24px;
  color: var(--muted);
  font-size: 13px;
}
.crumbs a {
  text-decoration: none;
}
.section {
  padding: 72px 0;
  border-top: 1px solid var(--line);
}
.section-wash {
  background: var(--wash);
}
.section-heading {
  display: grid;
  grid-template-columns: 190px 1fr;
  gap: 30px;
  margin-bottom: 38px;
}
.section-index {
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--blue);
}
h2 {
  margin: 0;
  color: var(--ink);
  font-size: clamp(30px, 4vw, 46px);
  line-height: 1.12;
  letter-spacing: -0.03em;
}
h3 {
  margin: 0;
  color: var(--ink);
  font-size: 20px;
  line-height: 1.25;
}
.section-heading p,
.lede {
  max-width: 760px;
  margin: 14px 0 0;
  color: var(--muted);
  font-size: 18px;
}
.cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}
.card {
  padding: 26px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #fff;
}
.card-number {
  margin-bottom: 32px;
  color: var(--blue);
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
.card p {
  margin: 12px 0 0;
}
.card a {
  font-weight: 850;
}
.article-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 260px;
  gap: 64px;
}
.prose {
  max-width: 760px;
}
.prose h2 {
  margin: 56px 0 16px;
  font-size: 34px;
}
.prose h2:first-child {
  margin-top: 0;
}
.prose h3 {
  margin: 34px 0 10px;
}
.prose p,
.prose li {
  font-size: 17px;
}
.prose ul,
.prose ol {
  padding-left: 22px;
}
.prose li + li {
  margin-top: 9px;
}
.example {
  margin: 24px 0;
  padding: 24px;
  border-left: 4px solid var(--teal);
  background: #f3fbfa;
  border-radius: 0 10px 10px 0;
}
.example strong {
  display: block;
  color: var(--ink);
}
.example p {
  margin: 6px 0;
}
.callout {
  margin: 32px 0;
  padding: 24px;
  border: 1px solid #b9d7f7;
  background: #eff7ff;
  border-radius: 12px;
}
.sidebar {
  align-self: start;
  position: sticky;
  top: 100px;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 12px;
}
.sidebar strong {
  display: block;
  color: var(--ink);
  margin-bottom: 10px;
}
.sidebar a {
  display: block;
  padding: 6px 0;
  text-decoration: none;
  font-weight: 700;
}
.formula {
  padding: 24px;
  text-align: center;
  background: var(--navy);
  color: #fff;
  border-radius: 12px;
  font-size: clamp(20px, 3vw, 30px);
  font-weight: 900;
}
.tool-panel {
  margin: 28px 0 36px;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: #fff;
  box-shadow: 0 16px 40px rgba(16, 24, 40, 0.07);
}
.tool-panel h2,
.tool-panel h3 {
  margin-top: 0;
}
.field-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}
.field {
  display: grid;
  gap: 7px;
}
.field label {
  color: var(--ink);
  font-size: 14px;
  font-weight: 850;
}
.field input,
.field select,
.tracker-table input {
  width: 100%;
  min-height: 46px;
  padding: 10px 12px;
  border: 1px solid #b8c0cc;
  border-radius: 8px;
  background: #fff;
  color: var(--ink);
  font: inherit;
}
.field input:focus,
.field select:focus,
.tracker-table input:focus {
  outline: 3px solid rgba(9, 105, 218, 0.18);
  border-color: var(--blue);
}
.field-help,
.tool-note {
  color: var(--muted);
  font-size: 13px;
}
.tool-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 22px;
}
button.button {
  cursor: pointer;
  font: inherit;
}
.results-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin-top: 24px;
}
.result-card {
  padding: 18px;
  border-radius: 10px;
  background: var(--wash);
}
.result-label {
  display: block;
  color: var(--muted);
  font-size: 12px;
  font-weight: 850;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.result-value {
  display: block;
  margin-top: 4px;
  color: var(--ink);
  font-size: 28px;
  font-weight: 900;
  line-height: 1.1;
}
.result-summary {
  margin: 18px 0 0;
  padding: 14px 16px;
  border-left: 4px solid var(--blue);
  background: #eff7ff;
}
.tracker-wrap {
  margin: 24px 0;
  overflow-x: auto;
}
.tracker-table {
  min-width: 760px;
}
.tracker-table input {
  min-width: 100px;
}
.tracker-table .ro-input {
  min-width: 140px;
}
.tracker-table button {
  border: 0;
  background: transparent;
  color: #b42318;
  cursor: pointer;
  font-weight: 800;
}
.note-example {
  margin: 20px 0;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #fff;
}
.note-example h3 {
  margin: 0 0 12px;
}
.note-example p:last-child {
  margin-bottom: 0;
}
.print-only {
  display: none;
}
.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: 12px;
}
table {
  width: 100%;
  border-collapse: collapse;
  min-width: 680px;
}
th,
td {
  padding: 15px;
  text-align: left;
  border-bottom: 1px solid var(--line);
}
th {
  background: #f6f8fa;
  color: var(--ink);
  font-size: 13px;
}
tr:last-child td {
  border-bottom: 0;
}
.price-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}
.price-card {
  display: flex;
  flex-direction: column;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: #fff;
}
.price-card.featured {
  border: 2px solid var(--blue);
  box-shadow: 0 16px 44px rgba(9, 105, 218, 0.12);
}
.price {
  margin: 20px 0 4px;
  color: var(--ink);
  font-size: 42px;
  font-weight: 900;
  letter-spacing: -0.04em;
}
.price small {
  font-size: 14px;
  color: var(--muted);
}
.price-card ul {
  padding-left: 20px;
  flex: 1;
}
.price-card .button {
  margin-top: 18px;
}
.faq {
  max-width: 820px;
}
.faq details {
  padding: 20px 0;
  border-bottom: 1px solid var(--line);
}
.faq summary {
  cursor: pointer;
  color: var(--ink);
  font-weight: 850;
}
.faq p {
  margin: 10px 0 0;
}
.cta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 30px;
  padding: 42px;
  background: var(--navy);
  border-radius: 16px;
  color: #fff;
}
.cta h2 {
  color: #fff;
}
.cta p {
  margin: 10px 0 0;
  color: #cbd5e1;
}
.footer {
  padding: 42px 0;
  background: #081525;
  color: #cbd5e1;
}
.footer-grid {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 30px;
}
.footer .logo {
  filter: brightness(0) invert(1);
}
.footer-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 18px;
}
.footer a {
  color: #e2e8f0;
  text-decoration: none;
}
.footer-copy {
  margin-top: 10px;
  font-size: 13px;
}
@media (max-width: 800px) {
  .nav a:not(.button) {
    display: none;
  }
  .hero {
    padding: 60px 0;
  }
  .section {
    padding: 54px 0;
  }
  .section-heading,
  .article-layout {
    grid-template-columns: 1fr;
  }
  .cards,
  .price-grid {
    grid-template-columns: 1fr;
  }
  .sidebar {
    display: none;
  }
  .cta,
  .footer-grid {
    align-items: flex-start;
    flex-direction: column;
  }
  .footer-links {
    justify-content: flex-start;
  }
  .hero-copy {
    font-size: 18px;
  }
  .field-grid,
  .results-grid {
    grid-template-columns: 1fr;
  }
}
@media (max-width: 480px) {
  .container {
    width: min(calc(100% - 28px), var(--max));
  }
  .logo {
    width: 150px;
  }
  .nav {
    gap: 8px;
  }
  .nav .button {
    padding: 0 12px;
  }
  .hero h1 {
    font-size: 40px;
  }
  .card,
  .price-card {
    padding: 22px;
  }
  .cta {
    padding: 28px;
  }
}
@media print {
  .site-header,
  .crumbs,
  .hero,
  .sidebar,
  .footer,
  .tool-actions,
  .no-print,
  #promo-banner {
    display: none !important;
  }
  .print-only {
    display: block;
  }
  .section {
    padding: 0;
    border: 0;
  }
  .article-layout,
  .prose {
    display: block;
    max-width: none;
  }
  .tool-panel {
    padding: 0;
    border: 0;
    box-shadow: none;
  }
  .tracker-wrap {
    overflow: visible;
  }
  .tracker-table {
    min-width: 0;
  }
  .tracker-table input {
    min-width: 0;
    padding: 3px;
    border-color: #aaa;
  }
}