:root {
  color-scheme: light;
  --ink: #292c28;
  --ink-soft: #62655f;
  --paper: #f7f6f3;
  --surface: #fff;
  --rule: #e5e5df;
  --rule-strong: #a2a69d;
  --green: #346538;
  --green-dark: #294f2c;
  --green-wash: #edf3ec;
  --gold-wash: #fbf3db;
  --red: #9f2f2d;
  --radius: 8px;
  --display: "Instrument Serif", Georgia, serif;
  --body: "DM Sans", "Helvetica Neue", Arial, sans-serif;
  --mono: "Geist Mono", "SF Mono", Consolas, monospace;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: var(--paper); font: 16px/1.65 var(--body); }
a { color: var(--green-dark); text-underline-offset: 4px; }
button, select, textarea, input { font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
:focus-visible { outline: 2px solid var(--green); outline-offset: 4px; }
::selection { background: #d8e5d5; }
[hidden] { display: none !important; }
h1, h2, h3, p { margin-top: 0; }
h1 { font: 400 clamp(2.8rem, 4.8vw, 4.5rem)/1.06 var(--display); letter-spacing: -.025em; text-wrap: balance; }
h2 { font: 400 clamp(2rem, 3.5vw, 3.2rem)/1.1 var(--display); letter-spacing: -.02em; }
h3 { font-size: 1.1rem; font-weight: 600; line-height: 1.3; letter-spacing: -.025em; }
p { margin-bottom: 1em; }
code, pre { font-family: var(--mono); }
pre { max-width: 100%; overflow-x: auto; white-space: pre; }
.skip-link { position: fixed; z-index: 10; top: 8px; left: 8px; padding: 10px 14px; color: white; background: var(--ink); transform: translateY(-150%); }
.skip-link:focus { transform: none; }
.site-header { display: flex; align-items: center; justify-content: space-between; gap: 20px; min-height: 76px; padding: 12px max(24px, calc((100vw - 1160px) / 2)); border-bottom: 1px solid var(--rule); }
.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--ink); font-size: .95rem; font-weight: 600; letter-spacing: -.03em; text-decoration: none; white-space: nowrap; }
.brand strong { color: var(--ink-soft); font-weight: 400; }
.brand-mark { display: grid; grid-template-columns: repeat(2, 6px); gap: 3px; }
.brand-mark i { width: 6px; height: 6px; background: var(--ink); }
.brand-mark i:last-child { background: #91aa87; }
.site-header nav { display: flex; align-items: center; gap: clamp(12px, 2.4vw, 30px); }
.site-header nav a { min-height: 44px; display: inline-flex; align-items: center; color: var(--ink-soft); font-size: .85rem; text-decoration: none; }
.site-header nav a:hover, .site-footer a:hover { color: var(--ink); text-decoration: underline; }
.site-header nav .nav-cta { padding: 0 16px; border: 1px solid var(--rule-strong); border-radius: 4px; color: var(--ink); }
main { max-width: 1160px; min-height: calc(100vh - 166px); margin-inline: auto; }
.hero { display: grid; grid-template-columns: minmax(0, 1.45fr) minmax(250px, .55fr); align-items: center; gap: 8vw; padding: clamp(60px, 10vw, 126px) 24px 92px; }
.hero-copy h1 { margin-bottom: 22px; }
.hero-copy h1 em { color: var(--green); font-weight: 400; }
.eyebrow { margin-bottom: 14px; color: var(--ink-soft); font-size: .7rem; font-weight: 600; letter-spacing: .12em; text-transform: uppercase; }
.hero-deck { max-width: 52ch; margin-bottom: 28px; color: var(--ink-soft); font-size: 1.05rem; }
.hero-note { align-self: end; padding: 22px 0 0 22px; border-left: 1px solid var(--rule-strong); }
.hero-note .note-index, .card-meta, .price-label, .callout-label { color: var(--ink-soft); font: 500 .68rem/1.5 var(--mono); letter-spacing: .05em; text-transform: uppercase; }
.hero-note p { margin: 25px 0 18px; font: 400 1.35rem/1.4 var(--display); }
.hero-note small { display: block; color: var(--ink-soft); font-size: .76rem; }
.note-rule { display: block; width: 48px; margin: 0 0 14px; border-top: 2px solid var(--green); }
.button { display: inline-flex; min-height: 48px; align-items: center; justify-content: center; gap: 10px; padding: 11px 18px; border: 1px solid transparent; border-radius: 4px; font-size: .88rem; font-weight: 600; text-align: center; text-decoration: none; cursor: pointer; transition: background-color 160ms ease, border-color 160ms ease; }
.button-primary { color: white; background: var(--ink); }
.button-primary:hover:not(:disabled) { background: #41453d; }
.button-secondary { color: var(--ink); background: var(--surface); border-color: var(--rule-strong); }
.button-secondary:hover:not(:disabled) { background: var(--green-wash); }
.button:disabled { opacity: .56; cursor: not-allowed; }
.button-wide { width: 100%; }
.preview-section { padding: 76px 24px 90px; border-top: 1px solid var(--rule); }
.section-heading { max-width: 670px; margin-bottom: 38px; }
.section-heading h2 { margin-bottom: 14px; }
.section-heading > p:last-child { color: var(--ink-soft); }
.sample-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; }
.sample-card { min-width: 0; padding: clamp(22px, 3vw, 34px); border: 1px solid var(--rule); border-radius: var(--radius); background: var(--surface); }
.code-card { background: #fbfcfa; }
.decision-card { background: #f8f8f5; }
.card-meta { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 26px; }
.sample-number { display: grid; place-items: center; width: 28px; height: 28px; border: 1px solid var(--rule-strong); border-radius: 50%; color: var(--ink); }
.sample-card h3 { margin-bottom: 10px; }
.sample-card > p { color: var(--ink-soft); font-size: .9rem; }
.sample-card code { font-size: .83em; }
.sample-card pre { margin: 18px 0; padding: 16px; border: 1px solid var(--rule); border-radius: 5px; background: white; font-size: .8rem; line-height: 1.75; }
.reveal-block { border-top: 1px solid var(--rule); }
.reveal-block:last-of-type { border-bottom: 1px solid var(--rule); }
.reveal-block summary { min-height: 48px; padding: 12px 2px; color: var(--green-dark); font-size: .88rem; font-weight: 600; cursor: pointer; }
.reveal-block p { margin: 0 0 17px; color: var(--ink-soft); font-size: .86rem; }
.reveal-block pre { margin-top: 0; }
.sample-card .static-note { margin: 17px 0 0; font-size: .74rem; }
.prompt-callout { margin: 22px 0; padding: 18px 20px; border-left: 3px solid #93a98b; background: var(--green-wash); }
.prompt-callout p { margin: 7px 0 0; color: var(--ink); font-size: .95rem; }
.decision-cue { padding-top: 17px; border-top: 1px solid var(--rule); }
.decision-cue strong { color: var(--ink); }
.course-section { display: grid; grid-template-columns: minmax(0, 1fr) minmax(245px, 320px); align-items: center; gap: 9vw; padding: 76px 24px 86px; border-top: 1px solid var(--rule); }
.course-copy h2 { max-width: 15ch; margin-bottom: 20px; }
.course-copy p { max-width: 66ch; color: var(--ink-soft); }
.course-copy p:last-child { font-size: .84rem; }
.price-card { padding: 26px; border: 1px solid var(--rule); border-radius: var(--radius); background: var(--surface); }
.price { display: flex; align-items: baseline; gap: 11px; margin: 15px 0 4px; }
.price span { font: 400 3.6rem/1 var(--display); }
.price small { color: var(--ink-soft); font-size: .82rem; }
.price-card > p:not(.price) { color: var(--ink-soft); font-size: .82rem; }
.price-card .button { margin-top: 10px; }
.policy-link { display: block; margin-top: 16px; font-size: .75rem; }
.plain-note { padding: 20px 24px; border-top: 1px solid var(--rule); border-bottom: 1px solid var(--rule); }
.plain-note p { max-width: 88ch; margin: 0; color: var(--ink-soft); font-size: .82rem; }
.plain-note strong { color: var(--ink); }
.site-footer { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 14px; max-width: 1160px; margin-inline: auto; padding: 24px; color: var(--ink-soft); font-size: .74rem; }
.site-footer a:not(.brand) { min-height: 40px; display: inline-flex; align-items: center; }

/* Account and one-time-code form */
.account-header { max-width: none; }
.account-main { max-width: 760px; padding: 60px 24px 80px; }
.account-intro { max-width: 600px; margin: 0 auto 32px; text-align: center; }
.account-intro h1 { margin-bottom: 15px; font-size: clamp(2.7rem, 6vw, 4.2rem); }
.account-intro > p:last-child { color: var(--ink-soft); }
.account-intro strong { color: var(--ink); }
.account-panel { padding: clamp(22px, 5vw, 38px); border: 1px solid var(--rule); border-radius: var(--radius); background: var(--surface); box-shadow: 0 12px 36px rgb(41 44 40 / 4%); }
.status-message { min-height: 28px; margin-bottom: 20px; color: var(--ink-soft); font-size: .88rem; }
.status-message[data-state="error"] { color: var(--red); }
.status-message[data-state="success"] { color: var(--green-dark); }
.account-form { display: grid; gap: 10px; }
.account-form label { font-size: .85rem; font-weight: 600; }
.account-form input { width: 100%; min-height: 50px; padding: 11px 13px; border: 1px solid var(--rule-strong); border-radius: 4px; color: var(--ink); background: #fff; }
.account-form input::placeholder { color: #858980; }
.account-form .button { margin-top: 5px; }
.account-form small, .helper-note { color: var(--ink-soft); font-size: .78rem; }
.text-button { justify-self: start; min-height: 44px; padding: 7px 0; border: 0; background: transparent; color: var(--green-dark); text-decoration: underline; text-underline-offset: 4px; cursor: pointer; }
.signed-in-panel { padding-top: 20px; border-top: 1px solid var(--rule); }
.signed-in-copy { color: var(--ink-soft); font-size: .89rem; overflow-wrap: anywhere; }
.signed-in-copy strong { color: var(--ink); }
.signed-in-panel .button { margin: 8px 0 12px; }
.helper-note { margin: 4px 0 14px; }
.checkout-return { display: grid; grid-template-columns: 38px minmax(0, 1fr); gap: 12px; align-items: start; padding: 18px 0; border-top: 1px solid var(--rule); }
.return-mark { display: grid; place-items: center; width: 34px; height: 34px; border-radius: 50%; background: var(--gold-wash); font-size: 1.2rem; }
.checkout-return h2 { margin: 2px 0 7px; font: 600 1rem/1.4 var(--body); letter-spacing: 0; }
.checkout-return p { margin: 0; color: var(--ink-soft); font-size: .84rem; }
.checkout-return .button { grid-column: 2; justify-self: start; }
.account-footnote { margin: 28px 0 0; padding-top: 20px; border-top: 1px solid var(--rule); color: var(--ink-soft); font-size: .74rem; }
.visually-hidden { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }

@media (max-width: 760px) {
  .site-header { min-height: 68px; padding-inline: 18px; }
  .site-header nav { gap: 12px; }
  .site-header nav a { font-size: .78rem; }
  .hero { grid-template-columns: 1fr; gap: 42px; padding: 66px 20px 60px; }
  .hero-note { max-width: 420px; }
  .preview-section, .course-section { padding-inline: 20px; }
  .sample-grid { grid-template-columns: 1fr; }
  .course-section { grid-template-columns: 1fr; gap: 25px; }
  .price-card { max-width: 420px; }
  .site-footer { padding-inline: 20px; }
}
@media (max-width: 480px) {
  .site-header { align-items: flex-start; flex-direction: column; gap: 2px; padding-block: 11px; }
  .site-header nav { width: 100%; justify-content: space-between; }
  .site-header nav a { min-height: 39px; }
  .site-header nav .nav-cta { padding-inline: 10px; }
  .hero { padding-top: 52px; }
  .preview-section { padding-block: 58px; }
  .course-section { padding-block: 58px; }
  .sample-card { padding: 21px; }
  .account-main { padding: 45px 16px 58px; }
  .account-header { align-items: center; flex-direction: row; }
  .account-header nav { width: auto; }
  .checkout-return { grid-template-columns: 32px minmax(0, 1fr); gap: 9px; }
  .checkout-return .button { grid-column: 1 / -1; }
  .site-footer { align-items: flex-start; flex-direction: column; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: .01ms !important; animation-duration: .01ms !important; }
}