/* trelion.info — TR digital-market courses, edx.org homepage: navy hero + overlapping cards.
   Not molveth teal/cream, not somira black-lime, not beltrin green. */
:root {
  --navy: #0b1024;
  --navy-2: #161b36;
  --ink: #15182b;
  --text: #1d2033;
  --mute: #5b6078;
  --line: #e4e6f0;
  --paper: #f4f5fb;
  --card: #fff;
  --indigo: #3d3cc9;
  --indigo-2: #2b2a86;
  --pill: #fff;
  --font: system-ui, -apple-system, "Segoe UI", Helvetica, Arial, sans-serif;
  --wrap: 1120px;
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; overflow-x: clip; }
body {
  margin: 0;
  background: #fff;
  color: var(--text);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.62;
  -webkit-font-smoothing: antialiased;
}
img, svg { display: block; max-width: 100%; }
a { color: var(--indigo-2); }
p { margin: 0 0 .85em; }
h1, h2, h3 {
  margin: 0 0 .4em;
  line-height: 1.1;
  letter-spacing: -.03em;
  font-weight: 800;
  overflow-wrap: anywhere;
  color: var(--ink);
}
h1 { font-size: clamp(2.1rem, 5vw, 3.6rem); }
h2 { font-size: clamp(1.45rem, 3vw, 2.1rem); }
h3 { font-size: 1.12rem; }
[hidden] { display: none !important; }
.wrap { width: min(var(--wrap), calc(100% - 32px)); margin-inline: auto; }
.lead { color: var(--mute); max-width: 62ch; }

.top {
  background: #fff;
  border-bottom: 1px solid var(--line);
  position: relative;
}
.top-in { display: flex; align-items: center; gap: 14px; min-height: 72px; }
.brand {
  display: flex; align-items: center; gap: 8px;
  text-decoration: none; color: var(--navy); font-weight: 800;
}
.brand img { width: 32px; height: 32px; }
.nav { display: flex; gap: 18px; margin-left: auto; }
.nav a { text-decoration: none; color: var(--mute); font-weight: 650; }
.nav a:hover { color: var(--ink); }
.menu-btn {
  display: none; margin-left: auto;
  border: 1px solid var(--line); background: #fff; border-radius: 999px;
  padding: 8px 12px; font: inherit;
}
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  background: var(--indigo); color: #fff; text-decoration: none;
  border: 0; border-radius: 999px; padding: 11px 18px; font: inherit; font-weight: 750;
  cursor: pointer;
}
.btn.ghost {
  background: transparent; color: #fff; border: 1px solid rgba(255,255,255,.45);
}
.btn.light { background: #fff; color: var(--navy); }
.btn.ink { background: var(--navy); }

.hero {
  background: radial-gradient(900px 420px at 80% -10%, #2a2d6a, transparent 55%), var(--navy);
  color: #fff;
  padding: 56px 0 72px;
}
.hero h1, .hero h2, .hero h3 { color: #fff; }
.hero .lead { color: #c8cce0; }
.hero-grid {
  display: grid;
  grid-template-columns: 1.05fr .95fr;
  gap: 36px;
  align-items: center;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 22px; }
.float-cards {
  display: grid;
  gap: 12px;
  transform: translateY(18px);
}
.float-cards a {
  display: grid;
  grid-template-columns: 88px 1fr;
  gap: 12px;
  background: #fff;
  color: inherit;
  text-decoration: none;
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 16px 40px rgba(8, 10, 28, .28);
}
.float-cards img { width: 88px; height: 88px; object-fit: cover; }
.float-cards div { padding: 10px 12px 10px 0; }
.float-cards h3 { font-size: .98rem; margin: 0 0 4px; color: var(--ink); }
.float-cards p { margin: 0; font-size: .82rem; color: var(--mute); }
.meta { font-size: .75rem; font-weight: 800; color: var(--indigo); letter-spacing: .04em; text-transform: uppercase; }

.rail {
  background: #fff;
  border-bottom: 1px solid var(--line);
  padding: 18px 0;
}
.rail-in {
  display: flex; flex-wrap: wrap; gap: 10px 28px;
  color: var(--mute); font-size: .92rem; font-weight: 650;
}
.rail b { color: var(--ink); font-weight: 800; }

.block { padding: 72px 0; }
.block.soft { background: var(--paper); }
.sec-k { color: var(--indigo); font-size: .78rem; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; }
.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.grid3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 16px; }
.course {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 16px;
  overflow: hidden;
  text-decoration: none;
  color: inherit;
  display: block;
}
.course img { width: 100%; height: 180px; object-fit: cover; }
.course-body { padding: 16px 16px 18px; }
.photo {
  display: block; width: 100%; object-fit: cover;
  border-radius: 16px; border: 1px solid var(--line);
}
.photo-wide { aspect-ratio: 16/9; max-height: 440px; margin: 22px 0 8px; }
.photo-mid { aspect-ratio: 4/3; margin: 18px 0 8px; }
.pair { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin: 22px 0; }
.pair .photo { margin: 0; aspect-ratio: 4/3; }
.article { max-width: 740px; }
.article h2 { margin-top: 1.5em; }
.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
}
.stat {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 20px 18px;
}
.stat b { display: block; font-size: 1.7rem; color: var(--indigo-2); letter-spacing: -.03em; }
.voices { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 14px; }
.voice {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 20px;
}
.who { color: var(--mute); font-size: .88rem; margin-top: 12px; }
.faq details { border-bottom: 1px solid var(--line); }
.faq summary { cursor: pointer; font-weight: 750; padding: 16px 0; }

.ico-grid { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 16px; margin-top: 28px; }
.ico {
  background: #fff; border: 1px solid var(--line); border-radius: 16px; padding: 20px 18px 16px;
}
.ico svg { width: 28px; height: 28px; stroke: var(--indigo); fill: none; stroke-width: 1.8; margin-bottom: 12px; }
.ico h3 { margin-bottom: 8px; }
.ico p { margin: 0; color: var(--mute); font-size: .95rem; }
.split {
  display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-top: 24px;
}
.split article {
  border-radius: 16px; padding: 22px 22px 8px;
}
.split .yes { background: #eef0ff; }
.split .no { background: #f3f1f6; }
.split h3 { font-size: 1.05rem; }
.steps { margin: 28px 0 0; padding: 0; list-style: none; }
.steps li {
  display: grid; grid-template-columns: 48px 1fr; gap: 16px;
  padding: 0 0 22px; border-left: 0;
}
.steps .n {
  width: 40px; height: 40px; border-radius: 50%;
  background: var(--navy); color: #fff; display: flex; align-items: center; justify-content: center;
  font-weight: 800; font-size: .95rem;
}
.week {
  display: grid; grid-template-columns: 140px 1fr; gap: 0;
  border: 1px solid var(--line); border-radius: 16px; overflow: hidden; margin-top: 22px;
  background: #fff;
}
.week div { padding: 14px 16px; border-bottom: 1px solid var(--line); }
.week div:nth-child(odd) { background: var(--paper); font-weight: 800; color: var(--ink); }
.week div:nth-last-child(-n+2) { border-bottom: 0; }
.words { display: grid; grid-template-columns: 1fr 1fr 1fr 1fr 1fr; gap: 10px; margin-top: 22px; }
.word {
  background: #fff; border: 1px solid var(--line); border-radius: 12px; padding: 14px 12px;
}
.word b { display: block; color: var(--indigo-2); margin-bottom: 6px; }
.word p { margin: 0; font-size: .86rem; color: var(--mute); }
.note {
  background: var(--navy); color: #fff; border-radius: 16px; padding: 22px 24px; margin: 28px 0 8px;
}
.note p { margin: 0; color: #c8cce0; }
.note strong { color: #fff; }
.arrive { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 14px; margin-top: 22px; }
.arrive article {
  background: #fff; border: 1px solid var(--line); border-radius: 16px; padding: 18px;
}
.arrive svg { width: 26px; height: 26px; stroke: var(--indigo); fill: none; stroke-width: 1.8; margin-bottom: 10px; }
.article .ico-grid, .article .words { grid-template-columns: 1fr 1fr; }
.article .arrive { grid-template-columns: 1fr; }
.cta {
  background: var(--navy-2);
  color: #fff;
  padding: 72px 0;
}
.cta h2 { color: #fff; }
.cta .lead { color: #c8cce0; }
.cta-grid { display: grid; grid-template-columns: .9fr 1.1fr; gap: 28px; align-items: start; }
form {
  background: #fff;
  color: var(--text);
  border-radius: 16px;
  padding: 22px;
}
.row2 { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
label { display: block; font-size: .82rem; font-weight: 750; margin: 0 0 10px; }
input, textarea {
  width: 100%; margin-top: 6px; border: 1px solid var(--line); border-radius: 10px;
  padding: 11px 12px; font: inherit; background: var(--paper);
}
textarea { min-height: 88px; resize: vertical; }
.fine { font-size: .82rem; color: var(--mute); margin-top: 10px; }
.thanks {
  background: #ecebff;
  color: #2b2a86;
  border-radius: 14px;
  padding: 22px;
  font-weight: 700;
}
.foot { background: #fff; border-top: 1px solid var(--line); padding: 42px 0 24px; }
.foot-in { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 18px; }
.foot a { display: block; text-decoration: none; color: var(--mute); margin: 6px 0; }
.copy { margin-top: 24px; color: var(--mute); font-size: .85rem; }
.legal { padding: 48px 0 80px; max-width: 740px; }
.cookie {
  position: fixed; left: 16px; right: 16px; bottom: 16px; z-index: 80;
  display: none; gap: 12px; align-items: center; justify-content: space-between; flex-wrap: wrap;
  background: #fff; border: 1px solid var(--line); border-radius: 16px; padding: 16px 18px;
  box-shadow: 0 14px 36px rgba(11,16,36,.14);
}
.cookie.is-open { display: flex; }
.cookie-actions { display: flex; gap: 8px; flex-wrap: wrap; }

@media (max-width: 900px) {
  .hero-grid, .grid2, .grid3, .stats, .voices, .cta-grid, .foot-in, .row2, .pair,
  .ico-grid, .split, .words, .arrive { grid-template-columns: 1fr; }
  .week { grid-template-columns: 110px 1fr; }
  .float-cards { transform: none; }
  .menu-btn { display: inline-flex; }
  .nav {
    display: none; position: absolute; left: 0; right: 0; top: 72px;
    background: #fff; border-bottom: 1px solid var(--line);
    flex-direction: column; padding: 12px 16px; margin: 0;
  }
  .nav.is-open { display: flex; }
}