:root {
  --bg: #F7F7FB;
  --surface: #FFFFFF;
  --ink: #15163A;
  --ink-soft: #55587A;
  --indigo: #2B2D7C;
  --indigo-deep: #1C1D5A;
  --indigo-soft: #E8E9FF;
  --orange: #FF7A1A;
  --orange-soft: #FFE9D9;
  --highlight: #FFE45C;
  --green: #18A06A;
  --green-soft: #DDF5EA;
  --red: #E0484A;
  --line: #E3E4F0;
  --radius: 18px;
  --shadow: 0 14px 40px rgba(43, 45, 124, .12);
  --max: 1140px;
  color-scheme: light;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0; background: var(--bg); color: var(--ink);
  font: 17px/1.6 "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
  -webkit-font-smoothing: antialiased;
}
img, svg { display: block; max-width: 100%; }
a { color: var(--indigo); }
h1, h2, h3 { font-family: "Bricolage Grotesque", "Inter", sans-serif; line-height: 1.1; margin: 0 0 .5em; letter-spacing: -.02em; }
h1 { font-size: clamp(2.4rem, 5.6vw, 4rem); font-weight: 800; }
h2 { font-size: clamp(1.9rem, 3.8vw, 2.7rem); font-weight: 800; }
h3 { font-size: 1.2rem; font-weight: 700; }
p { margin: 0 0 1em; }
.wrap { max-width: var(--max); margin: 0 auto; padding: 0 20px; }
section { padding: 88px 0; }
.center { text-align: center; }
.lead { font-size: 1.15rem; color: var(--ink-soft); max-width: 40rem; }
.center .lead { margin-left: auto; margin-right: auto; }
.tag {
  display: inline-flex; align-items: center; gap: 8px; font-size: .82rem; font-weight: 700; letter-spacing: .04em;
  color: var(--indigo); background: var(--indigo-soft); padding: 6px 12px; border-radius: 999px; margin-bottom: 18px;
}
.tag .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--orange); }
.hl { background: linear-gradient(transparent 58%, var(--highlight) 58%, var(--highlight) 92%, transparent 92%); padding: 0 .08em; }

/* Buttons */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 14px 26px; border-radius: 12px; font-weight: 700; text-decoration: none; transition: transform .15s, box-shadow .15s, background .15s; }
.btn-primary { background: var(--orange); color: #fff; box-shadow: 0 8px 20px rgba(255,122,26,.3); }
.btn-primary:hover { transform: translateY(-2px); background: #F06A0A; }
.btn-ghost { background: var(--surface); color: var(--indigo); border: 2px solid var(--line); }
.btn-ghost:hover { border-color: var(--indigo); }

/* Nav */
.nav { position: sticky; top: 0; z-index: 10; background: rgba(247,247,251,.9); backdrop-filter: blur(10px); border-bottom: 1px solid transparent; }
.nav.scrolled { border-bottom-color: var(--line); }
.nav .wrap { display: flex; align-items: center; justify-content: space-between; height: 68px; }
.brand { display: flex; align-items: center; gap: 10px; font-family: "Bricolage Grotesque", sans-serif; font-weight: 800; font-size: 1.35rem; color: var(--ink); text-decoration: none; }
.brand img { width: 34px; height: 34px; }
.nav-links { display: flex; gap: 26px; align-items: center; }
.nav-links a { text-decoration: none; color: var(--ink-soft); font-weight: 600; font-size: .95rem; }
.nav-links a:hover { color: var(--indigo); }
.nav-links .btn { padding: 10px 18px; color: #fff; }

/* Hero */
.hero { padding: 56px 0 88px; position: relative; overflow: hidden; }
.hero::before {
  content: ""; position: absolute; inset: 0; z-index: -1;
  background-image: radial-gradient(var(--line) 1.2px, transparent 1.2px); background-size: 22px 22px;
  mask-image: linear-gradient(to bottom, #000 40%, transparent);
}
.hero-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
.hero-ctas { display: flex; gap: 12px; flex-wrap: wrap; margin: 28px 0 22px; }
.exams { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; font-size: .88rem; color: var(--ink-soft); }
.exams b { color: var(--ink); }
.pill { background: var(--surface); border: 1px solid var(--line); border-radius: 999px; padding: 4px 12px; font-weight: 600; color: var(--ink); }
.pill.soon { color: var(--ink-soft); font-weight: 500; }

/* Answer evaluation mockup */
.eval { background: var(--surface); border-radius: 22px; box-shadow: var(--shadow); border: 1px solid var(--line); overflow: hidden; }
.eval-head { display: flex; justify-content: space-between; align-items: center; padding: 16px 20px; background: var(--indigo); color: #fff; }
.eval-head small { opacity: .75; display: block; font-size: .78rem; }
.eval-head strong { font-size: .98rem; }
.score { background: #fff; color: var(--indigo); font-family: "Bricolage Grotesque", sans-serif; font-weight: 800; border-radius: 12px; padding: 6px 12px; font-size: 1.25rem; }
.score span { font-size: .8rem; color: var(--ink-soft); }
.eval-body { padding: 18px 20px 20px; }
.q { font-size: .9rem; color: var(--ink-soft); border-left: 3px solid var(--orange); padding-left: 12px; margin-bottom: 16px; }
.bars { display: grid; gap: 10px; margin-bottom: 16px; }
.bar { display: grid; grid-template-columns: 110px 1fr 34px; gap: 10px; align-items: center; font-size: .85rem; }
.bar .track { height: 8px; background: var(--indigo-soft); border-radius: 99px; overflow: hidden; }
.bar .fill { height: 100%; border-radius: 99px; background: var(--indigo); }
.bar .fill.o { background: var(--orange); }
.bar b { text-align: right; }
.fb { display: grid; gap: 8px; }
.fb div { font-size: .86rem; padding: 9px 12px; border-radius: 10px; line-height: 1.4; }
.fb .good { background: var(--green-soft); }
.fb .fix { background: var(--orange-soft); }
.fb b { font-weight: 700; }

/* Stats strip */
.strip { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; background: var(--indigo); color: #fff; border-radius: 22px; overflow: hidden; }
.strip div { padding: 30px 28px; border-right: 1px solid rgba(255,255,255,.12); }
.strip div:last-child { border-right: 0; }
.strip strong { display: block; font-family: "Bricolage Grotesque", sans-serif; font-size: 1.4rem; margin-bottom: 4px; }
.strip span { color: #C9CAF2; font-size: .95rem; }

/* Feature grid */
.features { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 44px; }
.card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 26px; transition: transform .15s, box-shadow .15s; }
.card:hover { transform: translateY(-3px); box-shadow: var(--shadow); }
.card p { color: var(--ink-soft); margin: 0; font-size: .97rem; }
.card.big { grid-column: span 2; display: grid; grid-template-columns: 1fr 1fr; gap: 24px; align-items: center; background: var(--indigo-deep); color: #fff; border: 0; }
.card.big p { color: #C9CAF2; }
.ic { width: 48px; height: 48px; border-radius: 14px; display: grid; place-items: center; margin-bottom: 16px; }
.ic svg { width: 26px; height: 26px; }
.ic.o { background: var(--orange-soft); }
.ic.i { background: var(--indigo-soft); }
.ic.g { background: var(--green-soft); }
.ic.y { background: #FFF6C7; }
.mini-steps { display: grid; gap: 10px; }
.mini-steps div { background: rgba(255,255,255,.08); border: 1px solid rgba(255,255,255,.14); border-radius: 12px; padding: 12px 14px; font-size: .92rem; }
.mini-steps b { color: var(--highlight); margin-right: 6px; }

/* Day plan */
.day { display: grid; grid-template-columns: .9fr 1.1fr; gap: 56px; align-items: center; }
.timeline { background: var(--surface); border: 1px solid var(--line); border-radius: 22px; padding: 10px 24px; box-shadow: var(--shadow); }
.tl { display: grid; grid-template-columns: 70px 1fr; gap: 14px; padding: 16px 0; border-bottom: 1px dashed var(--line); }
.tl:last-child { border-bottom: 0; }
.tl time { font-weight: 700; color: var(--orange); font-size: .9rem; padding-top: 2px; }
.tl strong { display: block; }
.tl span { color: var(--ink-soft); font-size: .92rem; }

/* Language */
.lang { background: var(--orange-soft); border-radius: 26px; padding: 56px; display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: center; }
.bubble { background: var(--surface); border-radius: 16px; padding: 14px 16px; margin-bottom: 10px; box-shadow: 0 6px 18px rgba(255,122,26,.12); font-size: .95rem; max-width: 92%; }
.bubble.me { margin-left: auto; background: var(--indigo); color: #fff; }

/* Honest box */
.honest { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 40px; }
.honest .card { border-top: 4px solid var(--indigo); }

/* FAQ */
.faq { max-width: 780px; margin: 40px auto 0; }
details { background: var(--surface); border: 1px solid var(--line); border-radius: 14px; padding: 18px 22px; margin-bottom: 10px; }
summary { cursor: pointer; font-weight: 700; list-style: none; display: flex; justify-content: space-between; gap: 16px; }
summary::-webkit-details-marker { display: none; }
summary::after { content: "+"; font-size: 1.4rem; line-height: 1; color: var(--orange); transition: transform .2s; }
details[open] summary::after { transform: rotate(45deg); }
details p { margin: 12px 0 0; color: var(--ink-soft); }

/* CTA */
.cta { background: var(--indigo); color: #fff; border-radius: 26px; padding: 72px 28px; text-align: center; position: relative; overflow: hidden; }
.cta h2 { color: #fff; }
.cta p { color: #C9CAF2; }
.cta::after { content: ""; position: absolute; width: 320px; height: 320px; border-radius: 50%; background: var(--orange); opacity: .18; right: -80px; top: -120px; }

/* Footer */
footer { padding: 52px 0 40px; border-top: 1px solid var(--line); margin-top: 88px; font-size: .92rem; color: var(--ink-soft); }
.foot { display: flex; justify-content: space-between; gap: 28px; flex-wrap: wrap; }
.foot-links { display: flex; gap: 22px; flex-wrap: wrap; }
.foot-links a { color: var(--ink-soft); text-decoration: none; }
.foot-links a:hover { color: var(--indigo); }
.small { font-size: .84rem; margin-top: 24px; max-width: 54rem; }

/* Legal */
.legal { max-width: 760px; padding: 56px 20px 0; margin: 0 auto; }
.legal h2 { font-size: 1.4rem; margin-top: 2em; }
.legal p, .legal li { color: var(--ink-soft); }

@media (max-width: 960px) {
  .hero-grid, .day, .lang { grid-template-columns: 1fr; }
  .features, .honest { grid-template-columns: 1fr 1fr; }
  .card.big { grid-column: span 2; }
  .lang { padding: 36px 24px; }
}
@media (max-width: 640px) {
  section { padding: 64px 0; }
  .nav-links a:not(.btn) { display: none; }
  .features, .honest, .strip { grid-template-columns: 1fr; }
  .card.big { grid-column: auto; grid-template-columns: 1fr; }
  .strip div { border-right: 0; border-bottom: 1px solid rgba(255,255,255,.12); }
  .bar { grid-template-columns: 90px 1fr 30px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .btn, .card { transition: none; }
}