:root {
  --ink: #10243b;
  --ink-soft: #4b5c6e;
  --navy: #14365c;
  --navy-deep: #0d2640;
  --silver: #c9d0d6;
  --rule: #dfe3e6;
  --paper: #fbfaf7;
  --white: #ffffff;
  --brass: #a4782f;
  --ok: #1d6b4a;
  --warn: #8a5a09;
  --bad: #a3322a;
  --ease-out: cubic-bezier(0.23, 1, 0.32, 1);
  --serif: 'Newsreader', Georgia, serif;
  --sans: 'Instrument Sans', system-ui, sans-serif;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--paper); color: var(--ink); font: 400 17px/1.55 var(--sans); }
img { max-width: 100%; display: block; }
a { color: var(--navy); text-underline-offset: 3px; }
h1, h2, h3 { font-family: var(--serif); font-weight: 500; line-height: 1.12; margin: 0; letter-spacing: -0.01em; }
h1 { font-size: clamp(2.3rem, 5.4vw, 4rem); }
h2 { font-size: clamp(1.7rem, 3.2vw, 2.4rem); }
h3 { font-size: 1.3rem; }
p { margin: 0; }
.wrap { width: min(1160px, 100% - 40px); margin-inline: auto; }
.narrow { width: min(720px, 100% - 40px); margin-inline: auto; }
.muted { color: var(--ink-soft); }
.small { font-size: 0.88rem; }
.eyebrow { font-size: 0.78rem; font-weight: 600; letter-spacing: 0.13em; text-transform: uppercase; color: var(--brass); }
.hero .eyebrow { margin-bottom: 14px; }
.stack > * + * { margin-top: var(--gap, 16px); }
.num { font-variant-numeric: tabular-nums; }

.draft-bar { background: var(--navy-deep); color: #e8edf1; font-size: 0.82rem; padding: 7px 0; text-align: center; }
header.site { background: var(--white); border-bottom: 1px solid var(--rule); position: sticky; top: 0; z-index: 20; }
.site-row { display: flex; align-items: center; justify-content: space-between; gap: 18px; min-height: 72px; }
.brand img { height: 44px; width: auto; }
nav.main { display: flex; align-items: center; gap: 22px; font-size: 0.95rem; }
nav.main a { color: var(--ink); text-decoration: none; white-space: nowrap; }
nav.main a[aria-current='page'] { color: var(--brass); }
@media (hover: hover) and (pointer: fine) { nav.main a:hover { color: var(--brass); } }
input[type='checkbox'].menu-toggle { display: none; }
nav.main a.btn { color: #fff; }
.menu-button { display: none; cursor: pointer; font-weight: 600; font-size: 0.95rem; padding: 10px 0; }
@media (max-width: 1120px) {
  .menu-button { display: block; }
  nav.main { display: none; position: absolute; left: 0; right: 0; top: 100%; flex-direction: column; align-items: flex-start; gap: 4px; padding: 12px 20px 20px; background: var(--white); border-bottom: 1px solid var(--rule); }
  nav.main a { padding: 8px 0; width: 100%; }
  .menu-toggle:checked ~ nav.main { display: flex; }
}

.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 48px; padding: 0 24px; border: 1px solid var(--navy); border-radius: 3px; background: var(--navy); color: #fff; font: 600 1rem var(--sans); text-decoration: none; cursor: pointer; transition: transform 160ms var(--ease-out), background-color 160ms ease; }
.btn:active { transform: scale(0.97); }
.btn.ghost { background: transparent; color: var(--navy); }
.btn.small { min-height: 38px; padding: 0 14px; font-size: 0.9rem; }
.btn.danger { background: var(--bad); border-color: var(--bad); }
.btn[disabled] { opacity: 0.5; cursor: not-allowed; }
@media (hover: hover) and (pointer: fine) {
  .btn:hover { background: var(--navy-deep); }
  .btn.ghost:hover { background: #eef1f3; }
  .btn.danger:hover { background: #87271f; }
}
:focus-visible { outline: 2px solid var(--brass); outline-offset: 2px; }

.hero { padding: clamp(48px, 8vw, 96px) 0 clamp(40px, 6vw, 72px); border-bottom: 1px solid var(--rule); }
.hero-grid { display: grid; grid-template-columns: 1.5fr 1fr; gap: clamp(32px, 6vw, 80px); align-items: end; }
.hero-lead { font-size: 1.2rem; max-width: 34em; margin-top: 22px; color: var(--ink-soft); }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; }
.ledger { border-top: 2px solid var(--ink); }
.ledger div { display: flex; justify-content: space-between; align-items: baseline; gap: 16px; padding: 14px 0; border-bottom: 1px solid var(--rule); }
.ledger b { font: 500 1.9rem var(--serif); font-variant-numeric: tabular-nums; }
@media (max-width: 820px) { .hero-grid { grid-template-columns: 1fr; } }

.section { padding: clamp(44px, 7vw, 80px) 0; }
.section.tint { background: #f1f0ea; }
.section-head { display: flex; justify-content: space-between; align-items: baseline; gap: 20px; flex-wrap: wrap; margin-bottom: 26px; }
.rows { border-top: 2px solid var(--ink); }
.row { display: grid; grid-template-columns: 1fr auto; gap: 8px 24px; align-items: center; padding: 18px 0; border-bottom: 1px solid var(--rule); }
.row-title { font: 500 1.3rem var(--serif); color: var(--ink); text-decoration: none; }
.tag { display: inline-block; font-size: 0.75rem; font-weight: 600; letter-spacing: 0.04em; padding: 2px 8px; border: 1px solid var(--silver); border-radius: 2px; color: var(--ink-soft); }
.tag.ok { border-color: var(--ok); color: var(--ok); }
.tag.warn { border-color: var(--warn); color: var(--warn); }
.tag.bad { border-color: var(--bad); color: var(--bad); }
.tag.demo { border-color: var(--brass); color: var(--brass); }
.courses { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 24px; }
.cal-row { display: grid; grid-template-columns: 92px 1fr auto; gap: 18px; align-items: center; padding: 18px 0; border-bottom: 1px solid var(--rule); color: var(--ink); text-decoration: none; }
.cal-date { display: flex; flex-direction: column; }
.cal-date b { font: 500 1.35rem/1.15 var(--serif); }
@media (max-width: 560px) { .cal-row { grid-template-columns: 76px 1fr; } .cal-row .price { grid-column: 2; } }
.course-card { display: flex; flex-direction: column; background: var(--white); border: 1px solid var(--rule); color: var(--ink); text-decoration: none; transition: transform 160ms var(--ease-out), border-color 160ms ease; }
.course-card:active { transform: scale(0.99); }
@media (hover: hover) and (pointer: fine) { .course-card:hover { border-color: var(--navy); } }
.course-image { display: block; width: 100%; aspect-ratio: 16 / 9; object-fit: cover; background: var(--navy); }
.course-image.empty { display: flex; align-items: flex-end; padding: 16px; color: #fff; font: 500 1.05rem var(--serif); }
.course-card-body { display: flex; flex-direction: column; gap: 8px; padding: 16px 18px 18px; flex: 1; }
.course-card-body .price { margin-top: auto; }
.course-hero { width: 100%; aspect-ratio: 16 / 9; object-fit: cover; }
.price { font: 500 1.5rem var(--serif); font-variant-numeric: tabular-nums; }
.two { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(28px, 5vw, 64px); }
.course-layout { display: grid; grid-template-columns: 1.6fr 1fr; gap: clamp(28px, 5vw, 64px); align-items: start; }
.aside { border: 1px solid var(--rule); background: var(--white); padding: 24px; position: sticky; top: 92px; }
@media (max-width: 820px) { .two, .course-layout { grid-template-columns: 1fr; } .aside { position: static; } }
.person { display: flex; gap: 16px; align-items: center; }
.person img { width: 76px; height: 76px; object-fit: cover; border-radius: 50%; background: #e8ebee; }
:where(ul.clean) { margin: 0; padding-left: 1.1em; }
ul.clean li + li { margin-top: 6px; }

form.stack { --gap: 14px; }
label { display: block; font-weight: 600; font-size: 0.92rem; }
label .hint { font-weight: 400; color: var(--ink-soft); }
input, select, textarea { display: block; width: 100%; margin-top: 5px; padding: 11px 12px; border: 1px solid #b7c0c8; border-radius: 3px; background: #fff; color: var(--ink); font: 16px var(--sans); }
textarea { min-height: 110px; resize: vertical; }
input[type='checkbox'], input[type='radio'] { display: inline; width: auto; margin: 0 8px 0 0; }
.check { font-weight: 400; display: flex; align-items: flex-start; }
.check input { margin-top: 5px; }
.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
@media (max-width: 560px) { .grid2 { grid-template-columns: 1fr; } }
.card { background: var(--white); border: 1px solid var(--rule); padding: 24px; }
.notice { padding: 13px 16px; border-left: 3px solid var(--navy); background: #edf1f4; font-size: 0.95rem; }
.notice.ok { border-color: var(--ok); background: #e9f3ee; }
.notice.warn { border-color: var(--warn); background: #f7f0e1; }
.notice.bad { border-color: var(--bad); background: #f8e9e7; }
.dev { border: 1px dashed var(--brass); padding: 12px 14px; font-size: 0.9rem; background: #fdf8ee; }

.pay { border: 0; padding: 0; margin: 0; }
.pay legend { padding: 0; margin-bottom: 8px; }
.pay-options { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.pay-option { display: flex; align-items: center; gap: 8px; min-height: 58px; padding: 10px 12px; border: 1px solid #b7c0c8; border-radius: 4px; background: #fff; font-weight: 600; cursor: pointer; }
.pay-option:has(input:checked) { border-color: var(--navy); box-shadow: inset 0 0 0 1px var(--navy); }
.pay-option input { margin: 0; flex: none; }
.banks { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.bank { display: flex; align-items: center; justify-content: center; min-height: 72px; padding: 10px; border: 2px solid; border-radius: 8px; cursor: pointer; transition: transform 160ms var(--ease-out); }
.bank:active { transform: scale(0.97); }
.bank img { max-height: 38px; object-fit: contain; mix-blend-mode: multiply; }
.bank-pichincha { background: #fff4c2; border-color: #e0b800; }
.bank-produbanco { background: #dff3e3; border-color: #7fbf8e; }
.bank[aria-pressed='true'] { outline: 3px solid var(--navy); outline-offset: 1px; }
.acct-panel { display: grid; gap: 10px; padding: 12px; border: 1px solid; border-radius: 8px; }
.acct-panel[hidden] { display: none; }
.acct-pichincha { background: #fff9df; border-color: #f0d77a; }
.acct-produbanco { background: #eef8f0; border-color: #b5dcbe; }
.acct-row { display: flex; align-items: center; justify-content: space-between; gap: 10px; }
.acct-row small { display: block; color: var(--ink-soft); font-size: 0.8rem; }
.acct-row b { font-size: 1.15rem; letter-spacing: 0.03em; }
.copy { flex: none; min-height: 38px; padding: 0 10px; border: 1px solid var(--navy); border-radius: 4px; background: #fff; color: var(--navy); font: 600 0.82rem var(--sans); cursor: pointer; transition: transform 160ms var(--ease-out); }
.copy:active { transform: scale(0.97); }
.copied { color: var(--ok); font-weight: 600; }
.sticky-cta { display: none; }
@media (max-width: 820px) {
  .sticky-cta { display: flex; position: fixed; left: 0; right: 0; bottom: 0; z-index: 15; align-items: center; justify-content: space-between; gap: 12px; padding: 10px 16px; background: var(--white); border-top: 1px solid var(--rule); }
  main:has(.sticky-cta) { padding-bottom: 72px; }
}
@media (max-width: 420px) { .pay-options { grid-template-columns: 1fr; } }
.progress { height: 6px; background: var(--rule); }
.progress i { display: block; height: 100%; background: var(--navy); transform-origin: left; }
.player { width: 100%; aspect-ratio: 16 / 9; background: #000; border: 0; }
.lesson-list { list-style: none; margin: 0; padding: 0; border-top: 2px solid var(--ink); }
.lesson-list li { display: flex; justify-content: space-between; gap: 12px; padding: 12px 0; border-bottom: 1px solid var(--rule); }
.tabs { display: flex; gap: 22px; flex-wrap: wrap; border-bottom: 1px solid var(--rule); margin-bottom: 26px; }
.tabs a { padding: 10px 0; color: var(--ink-soft); text-decoration: none; font-size: 0.95rem; }
.tabs a[aria-current='page'] { color: var(--ink); box-shadow: inset 0 -2px 0 var(--ink); }

.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 0.92rem; }
th { text-align: left; font-size: 0.74rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--ink-soft); padding: 8px 12px 8px 0; border-bottom: 2px solid var(--ink); white-space: nowrap; }
td { padding: 11px 12px 11px 0; border-bottom: 1px solid var(--rule); vertical-align: top; }
td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; }
.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(170px, 1fr)); gap: 0 28px; border-top: 2px solid var(--ink); margin-bottom: 30px; }
.stats div { padding: 14px 0; border-bottom: 1px solid var(--rule); }
.stats b { display: block; font: 500 1.8rem var(--serif); font-variant-numeric: tabular-nums; }
.actions { display: flex; flex-wrap: wrap; gap: 8px; }
pre { overflow-x: auto; background: #f1f0ea; padding: 14px; font-size: 0.82rem; }

footer.site { background: var(--navy-deep); color: #d6dde3; padding: 44px 0; font-size: 0.93rem; }
footer.site a { color: #fff; display: block; }
.foot-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 28px; }
@media (max-width: 720px) { .foot-grid { grid-template-columns: 1fr; } }
.cookie { position: fixed; left: 16px; right: 16px; bottom: 16px; max-width: 560px; margin-inline: auto; padding: 14px 16px; background: var(--white); border: 1px solid var(--silver); box-shadow: 0 8px 28px rgb(16 36 59 / 0.16); display: flex; gap: 14px; align-items: center; font-size: 0.88rem; z-index: 30; transition: opacity 200ms ease, transform 200ms var(--ease-out); @starting-style { opacity: 0; transform: translateY(8px); } }
.cookie[hidden] { display: none; }
@media (prefers-reduced-motion: reduce) { .btn, .cookie { transition: none; } .btn:active { transform: none; } }
@media print { header.site, footer.site, .draft-bar, .cookie { display: none; } }
.course-image.poster { aspect-ratio: auto; height: auto; }