:root {
  --sky: #4FB3F6;
  --sky-soft: #E6F4FE;
  --navy: #13294B;
  --navy-2: #1E3A66;
  --sun: #FFC933;
  --sun-soft: #FFF4D1;
  --mint: #3CCB9A;
  --coral: #FF8A65;
  --ink: #13294B;
  --muted: #4A5D7A;
  --card: #FFFFFF;
  --page: #F7FBFF;
  --line: #D8E6F3;
  --radius: 20px;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: "Nunito", system-ui, sans-serif;
  background: var(--page);
  color: var(--ink);
  font-size: 18px;
  line-height: 1.6;
}
h1, h2, h3 { font-family: "Fredoka", "Nunito", sans-serif; line-height: 1.15; }
a { color: inherit; }
.wrap { max-width: 1120px; margin: 0 auto; padding: 0 20px; }

/* ---------- Header ---------- */
header {
  position: sticky; top: 0; z-index: 10;
  background: rgba(247, 251, 255, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.nav { display: flex; align-items: center; justify-content: space-between; height: 72px; }
.logo { display: flex; align-items: center; gap: 10px; text-decoration: none; font-family: "Fredoka"; font-weight: 700; font-size: 26px; color: var(--navy); }
.logo-mark {
  width: 40px; height: 40px; border-radius: 12px;
  background: var(--sky); display: grid; place-items: center;
  box-shadow: 0 4px 0 var(--navy);
}
.logo-mark span { width: 16px; height: 16px; border-radius: 50%; background: var(--sun); display: block; }
.logo b { color: var(--sky); }
.links { display: flex; gap: 8px; list-style: none; }
.links a { white-space: nowrap;
  text-decoration: none; font-weight: 700; font-size: 16px;
  padding: 10px 16px; border-radius: 999px; color: var(--navy);
}
.links a:hover { background: var(--sky-soft); }
.menu-btn { display: none; background: var(--navy); color: #fff; border: 0; border-radius: 12px; padding: 10px 14px; font: 700 16px "Nunito"; cursor: pointer; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  font: 800 18px "Nunito"; text-decoration: none;
  padding: 16px 26px; border-radius: 16px; border: 3px solid var(--navy);
  transition: transform .12s ease, box-shadow .12s ease;
}
.btn-sun { background: var(--sun); color: var(--navy); box-shadow: 0 5px 0 var(--navy); }
.btn-white { background: #fff; color: var(--navy); box-shadow: 0 5px 0 var(--navy); }
.btn:hover { transform: translateY(-2px); box-shadow: 0 7px 0 var(--navy); }
.btn:active { transform: translateY(3px); box-shadow: 0 2px 0 var(--navy); }

/* ---------- Hero ---------- */
.hero { background: var(--sky); color: var(--navy); position: relative; overflow: hidden; }
.hero::after {
  content: ""; position: absolute; right: -120px; top: -120px;
  width: 420px; height: 420px; border-radius: 50%; background: var(--sun); opacity: .9;
}
.hero-inner { position: relative; z-index: 1; padding: 88px 0 96px; display: grid; grid-template-columns: 1.2fr 1fr; gap: 48px; align-items: center; }
.tag { display: inline-block; background: var(--navy); color: #fff; font-weight: 800; font-size: 14px; letter-spacing: .04em; text-transform: uppercase; padding: 6px 14px; border-radius: 999px; margin-bottom: 20px; }
.hero h1 { font-size: clamp(40px, 6vw, 64px); margin-bottom: 20px; }
.hero h1 em { font-style: normal; background: var(--sun); padding: 0 10px; border-radius: 12px; }
.hero p { font-size: 21px; max-width: 540px; margin-bottom: 32px; font-weight: 600; }
.hero-btns { display: flex; flex-wrap: wrap; gap: 16px; }

.hero-card {
  background: #fff; border: 3px solid var(--navy); border-radius: 24px;
  box-shadow: 0 10px 0 var(--navy); padding: 28px; transform: rotate(1.5deg);
}
.hero-card .letter-top { display: flex; justify-content: space-between; align-items: center; margin-bottom: 16px; }
.pill { font-size: 13px; font-weight: 800; padding: 4px 12px; border-radius: 999px; }
.pill-sun { background: var(--sun-soft); color: #8A6400; }
.pill-sky { background: var(--sky-soft); color: var(--navy-2); }
.pill-mint { background: #DDF7EE; color: #1B6E52; }
.hero-card h3 { font-size: 22px; margin-bottom: 12px; }
.bar { height: 10px; border-radius: 6px; background: var(--line); margin: 10px 0; }
.bar.short { width: 60%; } .bar.mid { width: 82%; }
.hero-card .note { margin-top: 18px; background: var(--sun-soft); border-radius: 14px; padding: 12px 14px; font-size: 15px; font-weight: 700; }

/* ---------- Sections ---------- */
section { padding: 88px 0; }
.section-head { max-width: 640px; margin-bottom: 44px; }
.section-head h2 { font-size: clamp(32px, 4vw, 44px); margin-bottom: 12px; }
.section-head p { color: var(--muted); font-size: 19px; }

/* What's inside */
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.card {
  background: var(--card); border: 3px solid var(--navy); border-radius: var(--radius);
  padding: 30px; box-shadow: 0 6px 0 var(--navy); text-decoration: none; display: flex; flex-direction: column;
  transition: transform .12s ease, box-shadow .12s ease;
}
.card:hover { transform: translateY(-4px); box-shadow: 0 10px 0 var(--navy); }
.icon { width: 60px; height: 60px; border-radius: 16px; display: grid; place-items: center; font-size: 30px; margin-bottom: 20px; border: 3px solid var(--navy); }
.i-sun { background: var(--sun); } .i-sky { background: var(--sky); } .i-mint { background: var(--mint); }
.card h3 { font-size: 26px; margin-bottom: 10px; }
.card p { color: var(--muted); flex: 1; margin-bottom: 18px; }
.card .go { font-weight: 800; color: var(--navy); }

/* Steps */
.steps-bg { background: var(--navy); color: #fff; }
.steps-bg .section-head p { color: #C9D8EE; }
.steps { display: grid; grid-template-columns: repeat(6, 1fr); gap: 16px; list-style: none; counter-reset: step; }
.steps li {
  background: var(--navy-2); border-radius: 18px; padding: 24px 18px; position: relative; counter-increment: step;
  border: 2px solid rgba(255,255,255,.12);
}
.steps li::before {
  content: counter(step); display: grid; place-items: center;
  width: 44px; height: 44px; border-radius: 50%; background: var(--sun); color: var(--navy);
  font: 700 22px "Fredoka"; margin-bottom: 14px;
}
.steps h3 { font-size: 21px; margin-bottom: 6px; }
.steps p { font-size: 15px; color: #C9D8EE; }

/* Topics */
.topics { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 16px; }
.topic {
  background: #fff; border: 2px solid var(--line); border-radius: 16px; padding: 20px 22px;
  display: flex; justify-content: space-between; align-items: center; gap: 12px; text-decoration: none;
  font-weight: 800; font-size: 18px;
}
.topic:hover { border-color: var(--sky); background: var(--sky-soft); }
.topic.soon { color: var(--muted); }

/* Rules */
.rules { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.rule { background: var(--sun-soft); border-radius: 18px; padding: 24px 26px; border-left: 8px solid var(--sun); }
.rule h3 { font-size: 22px; margin-bottom: 6px; }
.rule p { color: var(--muted); }

/* CTA */
.cta { background: var(--sun); border-top: 3px solid var(--navy); border-bottom: 3px solid var(--navy); text-align: center; }
.cta h2 { font-size: clamp(32px, 4vw, 46px); margin-bottom: 12px; }
.cta p { font-size: 20px; font-weight: 600; margin-bottom: 30px; }

footer { background: var(--navy); color: #C9D8EE; padding: 40px 0; font-size: 15px; }
.foot { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 16px; }
footer .logo { color: #fff; font-size: 22px; }

/* ---------- Phone & tablet ---------- */
@media (max-width: 960px) {
  .hero-inner { grid-template-columns: 1fr; padding: 64px 0 72px; }
  .hero-card { transform: none; }
  .cards { grid-template-columns: 1fr; }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .rules { grid-template-columns: 1fr; }
}
@media (max-width: 900px) {
  .links { display: none; position: absolute; top: 72px; left: 0; right: 0; flex-direction: column; background: var(--page); padding: 12px 16px 20px; border-bottom: 1px solid var(--line); }
  .links.open { display: flex; }
  .menu-btn { display: block; }
  .wrap { padding: 0 16px; }
  section { padding: 64px 0; }
  .hero::after { width: 260px; height: 260px; right: -110px; top: -90px; }
}
@media (max-width: 440px) { .steps { grid-template-columns: 1fr; } .btn { width: 100%; justify-content: center; } }