:root {
  color-scheme: light;
  --ink: #142033;
  --muted: #5c6879;
  --paper: #f8f6f1;
  --surface: #ffffff;
  --teal: #075a5a;
  --teal-dark: #033e42;
  --gold: #e3b341;
  --line: #d6d9d5;
  --shadow: 0 24px 64px rgba(20, 32, 51, 0.14);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--paper); color: var(--ink); font-family: Arial, Helvetica, sans-serif; line-height: 1.6; }
a { color: inherit; }
.skip-link { position: fixed; z-index: 100; top: 8px; left: 8px; padding: 8px 12px; transform: translateY(-160%); background: white; color: var(--ink); }
.skip-link:focus { transform: translateY(0); }
.site-header, main, .site-footer { width: min(1160px, calc(100% - 40px)); margin-inline: auto; }
.site-header { display: flex; align-items: center; justify-content: space-between; gap: 24px; padding-block: 25px; color: var(--muted); font-size: 0.82rem; }
.site-header p { margin: 0; }
.site-nav { display: flex; gap: 18px; }
.site-nav a { color: var(--muted); font-weight: 700; text-decoration: none; }
.site-nav a:hover, .site-nav a:focus-visible { color: var(--teal); }
.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--ink); letter-spacing: 0.09em; text-decoration: none; }
.brand > span { display: grid; width: 34px; height: 34px; place-items: center; background: var(--teal); color: white; font-size: 1.1rem; font-weight: 900; }
.hero { display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(320px, 0.72fr); gap: clamp(48px, 8vw, 112px); align-items: center; min-height: 710px; padding-block: 70px 105px; }
.eyebrow { margin: 0 0 12px; color: var(--teal); font-size: 0.76rem; font-weight: 800; letter-spacing: 0.14em; text-transform: uppercase; }
h1, h2, h3, p { margin-top: 0; }
h1 { max-width: 780px; margin-bottom: 28px; font-size: clamp(3rem, 7.3vw, 6rem); line-height: 0.98; letter-spacing: -0.06em; }
h2 { margin-bottom: 18px; font-size: clamp(2rem, 4.7vw, 3.7rem); line-height: 1.04; letter-spacing: -0.045em; }
h3 { margin-bottom: 7px; font-size: 1.08rem; }
.lede { max-width: 680px; margin-bottom: 32px; color: var(--muted); font-size: clamp(1.1rem, 2vw, 1.32rem); }
.cta-row { display: flex; align-items: center; gap: 18px; flex-wrap: wrap; }
.cta-row > span, .trust-note { color: var(--muted); font-size: 0.85rem; }
.trust-note { max-width: 590px; margin-top: 13px; }
.button { display: inline-block; padding: 15px 22px; border: 2px solid transparent; border-radius: 3px; font-weight: 800; text-decoration: none; transition: transform 150ms ease, background 150ms ease; }
.button:hover, .button:focus-visible { transform: translateY(-2px); }
.button-primary { background: var(--teal); color: white; }
.button-primary:hover, .button-primary:focus-visible { background: var(--teal-dark); }
.button[aria-disabled="true"] { cursor: not-allowed; opacity: 0.58; transform: none; }
.worksheet-preview { position: relative; min-height: 480px; padding: 38px; overflow: hidden; border: 1px solid var(--line); background: var(--surface); box-shadow: var(--shadow); }
.preview-top { display: flex; justify-content: space-between; color: var(--muted); font-size: 0.75rem; font-weight: 700; text-transform: uppercase; }
.worksheet-preview h2 { margin-top: 65px; color: var(--ink); font-size: clamp(2.4rem, 4vw, 4rem); }
.worksheet-preview > p { color: var(--teal); font-weight: 700; }
.worksheet-preview ol { display: grid; gap: 11px; margin: 30px 0 0; padding-left: 23px; color: var(--muted); }
.preview-accent { position: absolute; right: -95px; bottom: -95px; width: 240px; height: 240px; border: 34px solid rgba(7,90,90,0.12); border-radius: 50%; }
.section { padding-block: 100px; border-top: 1px solid var(--line); }
.section-heading { max-width: 850px; }
.section-heading.narrow { max-width: 720px; }
.section-heading > p:last-child, .problem-grid p, .included-grid p, .fit-list span, .how-grid p, .faq-list p, .paid-next-step p { color: var(--muted); }
.included-title { margin: 48px 0 0; color: var(--teal-dark); font-size: 1rem; letter-spacing: 0.08em; text-transform: uppercase; }
.problem { display: grid; grid-template-columns: 0.9fr 1.1fr; gap: clamp(42px, 8vw, 105px); }
.problem-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 30px; align-content: end; }
.problem-grid p { margin-bottom: 0; }
.included-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 15px; margin-top: 16px; }
.included-grid article { min-height: 260px; padding: 24px 20px; border-top: 5px solid var(--teal); background: var(--surface); }
.included-grid article > span { display: block; margin-bottom: 48px; color: var(--gold); font-size: 1.5rem; font-weight: 900; }
.included-grid p { margin-bottom: 0; font-size: 0.91rem; }
.fit { display: grid; grid-template-columns: 0.9fr 1.1fr; gap: clamp(42px, 8vw, 105px); }
.fit-list { display: grid; gap: 0; margin: 0; padding: 0; list-style: none; }
.fit-list li { display: grid; grid-template-columns: 0.8fr 1.2fr; gap: 20px; padding: 22px 0; border-top: 1px solid var(--line); }
.how-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin: 50px 0 0; padding: 0; list-style: none; }
.how-grid li { display: grid; grid-template-columns: 52px 1fr; gap: 16px; padding: 27px; background: var(--surface); }
.how-grid li > span { color: var(--teal); font-size: 2rem; font-weight: 900; }
.how-grid p { margin-bottom: 0; }
.download-panel { display: grid; grid-template-columns: 1.15fr 0.85fr; gap: 50px; align-items: center; margin-block: 30px 110px; padding: clamp(36px, 6vw, 70px); background: var(--ink); color: white; }
.download-panel h2 { margin-bottom: 0; }
.download-panel .eyebrow { color: var(--gold); }
.button-gold { background: var(--gold); color: var(--ink); }
.download-panel > div:last-child p { margin: 12px 0 0; color: #bec8d5; font-size: 0.78rem; }
.faq { display: grid; grid-template-columns: 0.78fr 1.22fr; gap: clamp(42px, 8vw, 105px); }
.faq-list { border-top: 1px solid var(--line); }
.faq-list details { padding: 20px 0; border-bottom: 1px solid var(--line); }
.faq-list summary { cursor: pointer; font-weight: 800; }
.faq-list p { margin: 12px 0 0; }
.paid-next-step { display: grid; grid-template-columns: 1fr auto; gap: 55px; align-items: end; }
.paid-next-step > div { max-width: 780px; }
.text-link { color: var(--teal-dark); font-weight: 900; text-underline-offset: 5px; }
.text-link[aria-disabled="true"] { opacity: 0.58; }
.site-footer { display: grid; grid-template-columns: 1fr auto; gap: 22px; padding-block: 38px; border-top: 1px solid var(--line); color: var(--muted); font-size: 0.84rem; }
.site-footer div { display: grid; }
.site-footer nav { display: flex; gap: 18px; }
.configuration-notice, .copyright { grid-column: 1 / -1; margin: 0; }
.configuration-notice { color: #8b3a20; font-weight: 700; }
.visually-hidden { position: absolute; width: 1px; height: 1px; padding: 0; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0; }
.sticky-cta { position: fixed; z-index: 50; right: 16px; bottom: 16px; left: 16px; display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 14px 18px; background: rgba(20, 32, 51, 0.96); color: white; border-radius: 8px; box-shadow: var(--shadow); }
.sticky-cta p { margin: 0; font-weight: 700; }
.sticky-cta .button { padding: 12px 18px; white-space: nowrap; }

@media (max-width: 920px) {
  .hero, .problem, .fit, .faq, .download-panel, .paid-next-step { grid-template-columns: 1fr; }
  .included-grid { grid-template-columns: repeat(2, 1fr); }
  .how-grid { grid-template-columns: 1fr; }
  .worksheet-preview { max-width: 520px; }
}

@media (max-width: 620px) {
  .site-header, main, .site-footer { width: min(100% - 28px, 1160px); }
  .site-header p { display: none; }
  .site-nav { display: none; }
  .hero { min-height: auto; padding-block: 48px 72px; }
  .section { padding-block: 72px; }
  .problem-grid, .included-grid { grid-template-columns: 1fr; }
  .included-grid article { min-height: auto; }
  .included-grid article > span { margin-bottom: 25px; }
  .fit-list li { grid-template-columns: 1fr; gap: 4px; }
  .download-panel { margin-bottom: 72px; }
  .site-footer { grid-template-columns: 1fr; }
  .site-footer nav { justify-content: flex-start; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .button { transition: none; }
}