:root {
  color-scheme: dark;
  --paper: #16191e;
  --ink: #f3f6f6;
  --muted: #b7c4c9;
  --peach: #82fae9;
  --lilac: #1d242b;
  --sage: #1d3235;
  --line: #ffffff26;
  font-family: Manrope, 'Segoe UI', Arial, sans-serif;
  color: var(--ink);
  background: var(--paper);
  line-height: 1.56;
  scroll-behavior: smooth;
}
@font-face { font-family: Manrope; src: url('manrope-500.ttf') format('truetype'); font-weight: 400 600; font-display: swap; }
@font-face { font-family: Manrope; src: url('manrope-800.ttf') format('truetype'); font-weight: 700 900; font-display: swap; }
*, *::before, *::after { box-sizing: border-box; }
body { margin: 0; }
[hidden] { display: none !important; }
h1, h2, h3, p { margin: 0; }
h1, h2, h3 { line-height: 1.12; letter-spacing: -.04em; }
a { color: inherit; }
button, input { font: inherit; }
button { cursor: pointer; }
:focus-visible { outline: 3px solid #82fae9; outline-offset: 4px; }
.skip { position: fixed; top: 9px; left: 9px; z-index: 2; padding: 10px 13px; background: #16191e; transform: translateY(-160%); }
.skip:focus { transform: none; }
.wrap { width: min(1120px, calc(100% - 48px)); margin-inline: auto; }
.site-header { border-bottom: 1px solid var(--line); }
.header-inner { min-height: 74px; display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.header-inner nav { display: flex; align-items: center; gap: 22px; }
.brand { display: inline-flex; align-items: center; gap: 9px; font-size: 21px; font-weight: 800; text-decoration: none; white-space: nowrap; }
.brand > span { display: grid; place-items: center; width: 34px; height: 34px; border-radius: 10px; background: var(--peach); color: #112724; font-size: 22px; }
.nav-program { font-size: 13px; font-weight: 800; text-decoration: none; }
.button { display: inline-flex; justify-content: center; align-items: center; gap: 9px; min-height: 46px; border-radius: 12px; padding: 8px 15px; border: 1px solid transparent; font-size: 14px; font-weight: 800; text-align: center; text-decoration: none; line-height: 1.28; }
.button-main { background: var(--peach); color: #112724; border-color: #82fae9; }
.button-main:hover { background: #b6fff4; }
.button-quiet { color: var(--ink); background: transparent; border-color: #70848f; }
.button-quiet:hover { background: var(--lilac); }
.hero { text-align: center; padding: clamp(38px, 6vw, 86px) 0 48px; }
.eyebrow { color: #82fae9; font-size: 11px; font-weight: 800; letter-spacing: .09em; text-transform: uppercase; }
.hero-copy .eyebrow > span { display: inline-block; width: 7px; height: 7px; margin-right: 5px; border-radius: 50%; background: #82fae9; vertical-align: 1px; }
.hero h1 { margin: 13px auto 20px; max-width: 19ch; text-wrap: balance; font-size: clamp(37px, 6vw, 76px); letter-spacing: -.065em; }
.lead { max-width: 42ch; color: var(--muted); font-size: clamp(15px, 1.9vw, 20px); }
.hero .lead { max-width: 55ch; margin-inline: auto; }
.hero-actions { margin: 23px 0 13px; }
.hero .hero-actions { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; }
.hero-actions .button { min-height: 52px; }
.facts { color: var(--muted); font-size: 12px; font-weight: 800; }
.facts span { margin: 0 5px; }
.section { scroll-margin-top: 24px; border-top: 1px solid var(--line); padding: 29px 0 36px; }
.section > h2, .pilot-callout h2 { margin: 6px 0 16px; font-size: clamp(22px, 3.5vw, 38px); }
.program-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; }
.program-grid article { border: 1px solid var(--line); background: #1d242b; border-radius: 15px; padding: 17px; }
.module-number { font-size: 11px; color: #82fae9; font-weight: 800; }
.program-grid h3 { font-size: 18px; margin: 6px 0; }
.program-grid p, .pilot-callout p { color: var(--muted); font-size: 14px; }
.next-course { margin-bottom: 16px; padding: clamp(20px, 3.5vw, 35px); border: 1px solid #718894; border-radius: 19px; background: var(--lilac); }
.next-course h2 { margin: 7px 0 9px; font-size: clamp(24px, 3.5vw, 34px); }
.next-course p:not(.eyebrow) { max-width: 65ch; color: var(--muted); font-size: 15px; }
.pilot-callout, .cabinet-below { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 14px; }
.pilot-callout { background: var(--sage); border-radius: 19px; padding: 21px; margin-bottom: 29px; }
.pilot-callout h2 { margin: 0 0 5px; font-size: clamp(22px, 3vw, 28px); }
.footer { border-top: 1px solid var(--line); display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 19px 0 26px; font-size: 12px; color: var(--muted); }
.footer span:first-child { font-weight: 800; color: var(--ink); }

.cabinet, .login-wrap { padding: 42px 0 54px; }
.cabinet-heading h1, .login-card h1 { font-size: clamp(34px, 6vw, 65px); margin: 7px 0; }
.active-lesson { display: grid; grid-template-columns: minmax(0, 1.3fr) minmax(170px, .7fr); gap: 21px; background: #1d242b; color: #f3f6f6; border-radius: 23px; padding: clamp(20px, 4vw, 38px); margin: 24px 0 16px; }
.active-copy .eyebrow { color: #82fae9; }
.active-copy h2 { font-size: clamp(24px, 4.4vw, 43px); margin: 10px 0; }
.active-copy p:not(.eyebrow) { color: #b7c4c9; max-width: 48ch; font-size: 14px; }
.active-copy .button { margin-top: 18px; }
.active-art { display: grid; place-content: center; justify-items: center; padding: 10px; min-width: 0; border-radius: 16px; border: 1px solid #82fae94d; background: radial-gradient(ellipse at center, #36575e, #1d242b); text-align: center; }
.active-art > span { font-size: 30px; color: #82fae9; }
.active-art b { font-size: clamp(18px, 3vw, 35px); white-space: nowrap; }
.active-art i { color: #82fae9; font-style: normal; }
.active-art small { color: #c3d7db; }
.cabinet-below p { color: var(--muted); font-size: 14px; }
.login-card { max-width: 455px; margin: 0 auto; background: #1d242b; border: 1px solid var(--line); border-radius: 22px; padding: clamp(20px, 4vw, 32px); box-shadow: 0 15px 36px #0d142340; }
.login-card h1 { font-size: clamp(30px, 4.4vw, 44px); }
.login-card p:not(.eyebrow) { color: var(--muted); font-size: 14px; }
.login-card label { display: block; margin: 20px 0 6px; font-weight: 800; }
.login-card input { width: 100%; min-height: 46px; border: 1px solid #70848f; border-radius: 10px; padding: 7px 11px; color: var(--ink); background: #16191e; font-size: 16px; }
.login-card button { margin-top: 14px; }
.login-card .form-error { margin-top: 8px; color: #ffabb4; }
.login-card small { display: block; margin-top: 5px; color: var(--muted); font-size: 12px; }
.login-card .login-switch { margin-top: 20px; }
.login-switch a { color: var(--peach); text-underline-offset: 4px; }
.course-resume, .course-quiz {
  display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 20px;
  padding: clamp(20px, 4vw, 34px); margin: 24px 0; border: 1px solid #82fae949;
  border-radius: 20px; background: radial-gradient(ellipse at 100% 0%, #31596055, transparent 70%), #1d242b;
}
.course-resume h2, .course-quiz h2 { margin: 8px 0; font-size: clamp(23px, 3vw, 34px); }
.course-resume p:not(.eyebrow), .course-quiz p:not(.eyebrow) { color: var(--muted); max-width: 60ch; font-size: 14px; }
.course-overview p { font-size: 14px; margin-bottom: 8px; color: var(--muted); }
.course-overview progress { display: block; width: 100%; height: 10px; accent-color: var(--peach); }
.course-lessons { display: grid; gap: 12px; padding: 0; margin: 24px 0; list-style: none; }
.course-lesson {
  display: grid; grid-template-columns: 32px minmax(0, 1fr) auto; align-items: center; gap: 18px;
  padding: 20px; border: 1px solid var(--line); border-radius: 14px; background: #1d242b;
}
.course-lesson h2 { font-size: 19px; margin-bottom: 5px; }
.course-lesson p { font-size: 13px; color: var(--muted); }
.course-lesson .lesson-number { font-size: 14px; font-weight: 800; color: var(--peach); }
.course-lesson.is-complete { border-color: #82fae955; }
#cabinet-status { margin-top: 20px; color: var(--muted); }
@media (max-width: 540px) {
  .course-lesson { grid-template-columns: 24px minmax(0, 1fr); padding: 18px 14px; gap: 12px; }
  .course-lesson .button { grid-column: 2; justify-self: start; }
}

@media (max-width: 680px) {
  .wrap { width: min(100% - 30px, 500px); }
  .header-inner { min-height: 62px; }
  .header-inner nav { gap: 10px; }
  .nav-program { display: none; }
  .hero { padding: 34px 0; }
  .hero h1 { font-size: clamp(35px, 10vw, 51px); margin: 9px auto 12px; }
  .hero-actions { margin-top: 17px; }
  .program-grid, .active-lesson { grid-template-columns: minmax(0, 1fr); }
  .active-art { min-height: 116px; }
  .cabinet, .login-wrap { padding: 28px 0 38px; }
}
@media (prefers-reduced-motion: reduce) { :root { scroll-behavior: auto; } }