@font-face { font-family: "Caslon Display"; src: url("/fonts/LibreCaslonDisplay-Regular.woff2") format("woff2"); font-display: swap; }
@font-face { font-family: "Caslon"; src: url("/fonts/LibreCaslonText-Regular.woff2") format("woff2"); font-weight: 400 700; font-display: swap; }
@font-face { font-family: "Caslon"; src: url("/fonts/LibreCaslonText-Italic.woff2") format("woff2"); font-style: italic; font-weight: 400 700; font-display: swap; }
@font-face { font-family: "Archivo"; src: url("/fonts/Archivo.woff2") format("woff2"); font-weight: 100 900; font-stretch: 62% 125%; font-display: swap; }

:root {
  --paper: #f4efe6;
  --paper-2: #ece5d8;
  --ink: #171513;
  --muted: #6b645b;
  --rule: #cfc6b8;
  --accent: #7b2320;
  --ok: #2f5d3a;
  --wrap: 1200px;
  --gutter: clamp(16px, 4vw, 40px);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--paper); color: var(--ink); font: 400 17px/1.6 "Archivo", system-ui, sans-serif; -webkit-font-smoothing: antialiased; }
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; }
.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 var(--gutter); }
.rule { border: 0; border-top: 1px solid var(--rule); margin: 0; }

/* Type */
.display { font-family: "Caslon Display", Georgia, serif; font-weight: 400; letter-spacing: -0.01em; line-height: 1.02; margin: 0; }
h1.display { font-size: clamp(48px, 6.4vw, 92px); }
h2.display { font-size: clamp(36px, 4.6vw, 60px); }
h3 { font: 600 19px/1.3 "Archivo", sans-serif; margin: 0 0 8px; }
.kicker { font: 600 12px/1 "Archivo", sans-serif; letter-spacing: .16em; text-transform: uppercase; color: var(--accent); margin: 0 0 20px; }
.lead { font-family: "Caslon", Georgia, serif; font-size: clamp(19px, 1.7vw, 22px); line-height: 1.5; max-width: 34em; }
.muted { color: var(--muted); }
.small { font-size: 14px; }

/* Header */
.site-header { border-bottom: 1px solid var(--rule); position: sticky; top: 0; background: var(--paper); z-index: 10; }
.site-header .wrap { display: flex; align-items: center; gap: 32px; height: 76px; }
.brand { text-decoration: none; display: flex; flex-direction: column; line-height: 1; }
.brand b { font: 400 26px/1 "Caslon Display", serif; letter-spacing: .01em; }
.brand span { font: 600 9.5px/1 "Archivo", sans-serif; letter-spacing: .28em; text-transform: uppercase; margin-top: 6px; color: var(--muted); }
.nav { display: flex; gap: 26px; margin-left: auto; }
.nav a { text-decoration: none; font-size: 15px; }
.nav a:hover { text-decoration: underline; text-underline-offset: 4px; }
.langs { display: flex; gap: 2px; font-size: 13px; font-weight: 600; letter-spacing: .06em; }
.langs a { text-decoration: none; padding: 4px 6px; color: var(--muted); }
.langs a.on { color: var(--ink); border-bottom: 1px solid var(--ink); }
.btn { display: inline-block; font: 600 15px/1 "Archivo", sans-serif; padding: 16px 24px; border: 1px solid var(--ink); background: var(--ink); color: var(--paper); text-decoration: none; cursor: pointer; }
.btn:hover { background: var(--accent); border-color: var(--accent); }
.btn.ghost { background: transparent; color: var(--ink); }
.btn.ghost:hover { background: var(--ink); color: var(--paper); border-color: var(--ink); }
.btn.sm { padding: 10px 16px; font-size: 14px; }

/* Sections */
section { padding: clamp(64px, 9vw, 120px) 0; border-bottom: 1px solid var(--rule); }
.split { display: grid; grid-template-columns: 4fr 8fr; gap: 48px; }
.hero { padding-top: clamp(40px, 6vw, 72px); }
.hero-grid { display: grid; grid-template-columns: 5fr 7fr; gap: 56px; align-items: center; }
.hero .actions { display: flex; gap: 12px; margin-top: 36px; flex-wrap: wrap; }
.facts { display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid var(--ink); margin-top: 64px; }
.facts div { padding: 22px 20px 0 0; }
.facts div + div { border-left: 1px solid var(--rule); padding-left: 20px; }
.facts b { display: block; font: 400 clamp(44px, 5vw, 68px)/1 "Caslon Display", serif; }
.facts span { font-size: 14px; color: var(--muted); }

.trust { display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px; }
.trust p { margin: 0; font-size: 15px; color: var(--muted); }
.trust-sec { padding: 48px 0; background: var(--paper-2); }

.prose p { margin: 0 0 1em; max-width: 38em; }
.photo-pair { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-top: 48px; }

table.modules { width: 100%; border-collapse: collapse; font-size: 16px; }
table.modules th { text-align: left; font: 600 12px/1 "Archivo", sans-serif; letter-spacing: .12em; text-transform: uppercase; color: var(--muted); padding: 0 12px 12px 0; border-bottom: 1px solid var(--ink); }
table.modules td { padding: 14px 12px 14px 0; border-bottom: 1px solid var(--rule); vertical-align: top; }
table.modules td.code { font-variant-numeric: tabular-nums; color: var(--muted); width: 70px; }
table.modules td.num, table.modules th.num { text-align: right; font-variant-numeric: tabular-nums; padding-right: 0; }
table.modules tr.group td { padding-top: 28px; font: 400 24px/1 "Caslon Display", serif; border-bottom: 1px solid var(--ink); }
table.modules tr.total td { border-bottom: 0; border-top: 1px solid var(--ink); font-weight: 600; }

.exams { display: grid; grid-template-columns: 1fr 1fr; gap: 0; border: 1px solid var(--ink); margin-top: 48px; }
.exams > div { padding: 32px; }
.exams > div + div { border-left: 1px solid var(--ink); }
.exams .meta { font: 400 40px/1 "Caslon Display", serif; margin-bottom: 16px; }

.cert-grid { display: grid; grid-template-columns: 5fr 7fr; gap: 56px; align-items: center; }
.checklist { list-style: none; padding: 0; margin: 24px 0 0; }
.checklist li { padding: 12px 0; border-top: 1px solid var(--rule); }
.checklist li::before { content: "—"; color: var(--accent); margin-right: 12px; }

.steps { display: grid; grid-template-columns: repeat(5, 1fr); gap: 24px; margin-top: 48px; }
.steps li { list-style: none; border-top: 1px solid var(--ink); padding-top: 16px; }
.steps ol { padding: 0; margin: 0; display: contents; }
.steps .n { font: 400 15px/1 "Caslon", serif; font-style: italic; color: var(--accent); }
.steps p { font-size: 15px; color: var(--muted); margin: 0; }

.campus { display: grid; grid-template-columns: 1fr auto; padding: 18px 0; border-top: 1px solid var(--rule); gap: 16px; }
.campus:last-child { border-bottom: 1px solid var(--rule); }
.tag { font: 600 12px/1 "Archivo", sans-serif; letter-spacing: .08em; text-transform: uppercase; padding: 6px 10px; border: 1px solid currentColor; align-self: center; }
.tag.ok { color: var(--ok); }
.partner { background: var(--ink); color: var(--paper); padding: 40px; margin-top: 40px; display: grid; grid-template-columns: 1fr auto; gap: 32px; align-items: center; }
.partner p { margin: 0; color: #cfc8bc; max-width: 40em; }
.partner .btn { background: var(--paper); color: var(--ink); border-color: var(--paper); }

.price-box { border: 1px solid var(--ink); display: grid; grid-template-columns: 5fr 7fr; }
.price-box > div { padding: 40px; }
.price-box > div + div { border-left: 1px solid var(--ink); }
.amount { font: 400 clamp(64px, 8vw, 104px)/1 "Caslon Display", serif; color: var(--accent); margin: 8px 0 16px; }

form .field { margin-bottom: 18px; }
label { display: block; font-size: 13px; font-weight: 600; letter-spacing: .04em; margin-bottom: 6px; }
input, textarea, select { width: 100%; font: 400 16px/1.4 "Archivo", sans-serif; color: var(--ink); background: transparent; border: 0; border-bottom: 1px solid var(--ink); padding: 10px 0; border-radius: 0; }
input:focus, textarea:focus, select:focus { outline: none; border-bottom: 2px solid var(--accent); padding-bottom: 9px; }
textarea { min-height: 90px; resize: vertical; }
.row2 { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.notice { border: 1px solid var(--ok); color: var(--ok); padding: 14px 16px; margin-bottom: 24px; }
.error { color: var(--accent); font-size: 14px; margin-top: 4px; }
.hp { position: absolute; left: -9999px; }
.verify-box { border-top: 1px solid var(--ink); padding-top: 24px; margin-top: 48px; }
.verify-box form { display: flex; gap: 12px; align-items: end; }

.site-footer { padding: 48px 0; font-size: 14px; color: var(--muted); }
.site-footer .wrap { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 32px; }
.site-footer a { text-decoration: none; }

/* Mini certificate preview on the one-pager */
.mini-cert { background: #f6f1e7; border: 1px solid var(--ink); padding: 10px; aspect-ratio: 297 / 210; }
.mini-cert .in { border: 1px solid var(--rule); height: 100%; padding: 6% 7%; display: flex; flex-direction: column; text-align: center; }
.mini-cert .t { font: 600 9px/1 "Archivo", sans-serif; letter-spacing: .3em; text-transform: uppercase; }
.mini-cert .h { font: 400 clamp(26px, 3vw, 40px)/1 "Caslon Display", serif; margin: 6% 0 3%; }
.mini-cert .name { font: italic 400 clamp(18px, 2vw, 26px)/1.1 "Caslon", serif; border-bottom: 1px solid var(--rule); align-self: center; padding: 0 24px 6px; }
.mini-cert .p { font-size: 11px; color: var(--muted); margin-top: 3%; }
.mini-cert .foot { margin-top: auto; display: grid; grid-template-columns: 1fr 1fr 1fr; font-size: 9px; color: var(--muted); align-items: end; }
.mini-cert .foot i { display: block; border-top: 1px solid var(--ink); padding-top: 4px; font-style: normal; }
.mini-cert .qr { width: 40px; height: 40px; justify-self: end; }

@media (max-width: 900px) {
  .nav { display: none; }
  .hero-grid, .split, .cert-grid, .price-box, .exams, .partner { grid-template-columns: 1fr; }
  .price-box > div + div, .exams > div + div { border-left: 0; border-top: 1px solid var(--ink); }
  .facts, .trust { grid-template-columns: 1fr 1fr; }
  .facts div:nth-child(3) { border-left: 0; padding-left: 0; }
  .steps { grid-template-columns: 1fr; }
  .site-footer .wrap { grid-template-columns: 1fr; }
  .row2 { grid-template-columns: 1fr; }
}
@media (max-width: 560px) {
  .site-header .wrap { gap: 12px; }
  .brand b { font-size: 21px; }
  .trust { grid-template-columns: 1fr; }
  .photo-pair { grid-template-columns: 1fr; }
  .verify-box form { flex-direction: column; align-items: stretch; }
  table.modules td.kind, table.modules th.kind { display: none; }
}

/* Header logins */
.logins { display: flex; gap: 8px; align-items: center; }
.logins .teacher { font-size: 14px; text-decoration: none; padding: 10px 6px; }
.logins .teacher:hover { text-decoration: underline; text-underline-offset: 4px; }
@media (max-width: 1100px) { .nav { gap: 18px; } .nav a { font-size: 14px; } }
@media (max-width: 560px) { .logins .teacher { display: none; } .langs a { padding: 4px 3px; } }

/* Login page */
.tabs { display: grid; grid-template-columns: 1fr 1fr; border: 1px solid var(--ink); margin-bottom: 32px; }
.tabs a { text-align: center; padding: 14px; text-decoration: none; font-weight: 600; font-size: 15px; }
.tabs a.on { background: var(--ink); color: var(--paper); }
.login-wrap { max-width: 460px; margin: 0 auto; padding: 72px 0 120px; }
.soon { border: 1px solid var(--ink); padding: 16px 18px; margin-top: 20px; font-size: 15px; display: none; }
.soon.show { display: block; }

.netstats { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--ink); margin-top: 36px; }
.netstats div { padding: 20px 20px 0 0; }
.netstats div + div { border-left: 1px solid var(--rule); padding-left: 20px; }
.netstats b { display: block; font: 400 clamp(40px, 4.4vw, 60px)/1 "Caslon Display", serif; }
.netstats span { font-size: 14px; color: var(--muted); }

.faq details { border-top: 1px solid var(--rule); }
.faq details:last-child { border-bottom: 1px solid var(--rule); }
.faq summary { list-style: none; cursor: pointer; padding: 20px 40px 20px 0; position: relative; font: 400 22px/1.3 "Caslon Display", serif; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; position: absolute; right: 4px; top: 18px; font: 300 26px/1 "Archivo", sans-serif; }
.faq details[open] summary::after { content: "–"; }
.faq details p { margin: 0 0 22px; color: var(--muted); max-width: 40em; }