* { box-sizing: border-box; }

:root {
  --purple: #6937d8;
  --text: #202636;
  --muted: #687184;
  --border: #e7e9ef;
  --container: 1180px;
}

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: #fff;
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  -webkit-font-smoothing: antialiased;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  height: 78px;
  background: rgba(255,255,255,.96);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid #eef0f4;
}

.header-inner {
  width: min(calc(100% - 48px), var(--container));
  height: 78px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 30px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 11px;
  color: var(--text);
  text-decoration: none;
}

.brand-mark {
  width: 42px;
  height: 42px;
  flex: 0 0 42px;
  display: grid;
  place-items: center;
  border-radius: 12px;
  background: var(--purple);
  color: #fff;
  font-size: 12px;
  font-weight: 900;
}

.brand-text { display: flex; flex-direction: column; gap: 2px; }
.brand-text strong { font-size: 14px; line-height: 1.15; font-weight: 800; }
.brand-text small { color: #7d8595; font-size: 10px; line-height: 1.15; }

.main-nav { display: flex; align-items: center; gap: 27px; }
.main-nav a {
  color: #6d7587;
  font-size: 13px;
  line-height: 1;
  font-weight: 700;
  text-decoration: none;
  transition: color .2s ease;
}
.main-nav a:hover, .main-nav a.active { color: var(--purple); }

.arcade-intro {
  width: min(calc(100% - 48px), var(--container));
  margin: 0 auto;
  padding: 60px 0 30px;
}

.eyebrow {
  color: var(--purple);
  font-size: 11px;
  font-weight: 900;
  letter-spacing: 1.7px;
}

.arcade-intro h1 {
  margin: 9px 0 9px;
  font-size: clamp(36px, 5vw, 54px);
  line-height: 1;
  letter-spacing: -2px;
}

.arcade-intro p {
  max-width: 680px;
  margin: 0;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.7;
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 17px;
  color: #697285;
  font-size: 12px;
  font-weight: 750;
  text-decoration: none;
}
.back-link:hover { color: var(--purple); }

.skill-hero {
  width: min(calc(100% - 48px), var(--container));
  min-height: 240px;
  margin: 0 auto 25px;
  padding: 35px 40px;
  display: grid;
  grid-template-columns: 1fr 230px;
  align-items: center;
  gap: 25px;
  border-radius: 25px;
  border: 1px solid var(--skill-border);
  background: var(--skill-bg);
  overflow: hidden;
}

.skill-hero h1 {
  margin: 0 0 10px;
  color: var(--skill-color);
  font-size: clamp(38px, 5vw, 58px);
  line-height: 1;
  letter-spacing: -2.5px;
}

.skill-hero p {
  max-width: 630px;
  margin: 0;
  color: #475063;
  font-size: 14px;
  line-height: 1.7;
}

.hero-character {
  height: 210px;
  display: flex;
  align-items: flex-end;
  justify-content: center;
}
.hero-character img {
  max-width: 100%;
  max-height: 210px;
  object-fit: contain;
}

.section-heading {
  width: min(calc(100% - 48px), var(--container));
  margin: 42px auto 17px;
}
.section-heading h2 { margin: 0 0 5px; font-size: 22px; }
.section-heading p { margin: 0; color: var(--muted); font-size: 12px; }

.game-grid {
  width: min(calc(100% - 48px), var(--container));
  margin: 0 auto 70px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 17px;
}

.game-card {
  min-height: 205px;
  padding: 23px;
  display: flex;
  flex-direction: column;
  border: 1px solid var(--border);
  border-radius: 17px;
  background: #fff;
  box-shadow: 0 8px 25px rgba(32,38,54,.04);
}

.game-tag {
  align-self: flex-start;
  padding: 5px 8px;
  border-radius: 7px;
  background: var(--skill-bg);
  color: var(--skill-color);
  font-size: 9px;
  font-weight: 900;
  letter-spacing: .7px;
  text-transform: uppercase;
}

.game-card h3 { margin: 14px 0 7px; font-size: 17px; }
.game-card p { margin: 0; color: var(--muted); font-size: 11px; line-height: 1.6; }
.game-meta { margin-top: auto; padding-top: 17px; color: #8a92a2; font-size: 10px; }

.coming-soon {
  margin-top: 10px;
  color: #929aaa;
  font-size: 10px;
  font-weight: 700;
}

.site-footer {
  border-top: 1px solid #edf0f4;
  text-align: center;
  padding: 25px;
  color: #8991a1;
  font-size: 10px;
}

.vocabulary { --skill-color:#5e2fc8; --skill-bg:#f1edff; --skill-border:#e6ddfa; }
.grammar    { --skill-color:#07966d; --skill-bg:#eaf8f4; --skill-border:#dcefe9; }
.listening  { --skill-color:#176fd0; --skill-bg:#edf6ff; --skill-border:#dbe9fa; }
.reading    { --skill-color:#ed3036; --skill-bg:#fff0f0; --skill-border:#f8dddd; }
.writing    { --skill-color:#ed7d00; --skill-bg:#fff4e6; --skill-border:#fae5ca; }
.speaking   { --skill-color:#0795a7; --skill-bg:#eaf9fb; --skill-border:#d7edf0; }

@media (max-width: 900px) {
  .game-grid { grid-template-columns: repeat(2, 1fr); }
  .skill-hero { grid-template-columns: 1fr 180px; }
}

@media (max-width: 700px) {
  .main-nav { display: none; }
  .header-inner,
  .arcade-intro,
  .skill-hero,
  .section-heading,
  .game-grid {
    width: min(calc(100% - 28px), var(--container));
  }
  .skill-hero { padding: 28px; grid-template-columns: 1fr; }
  .hero-character { height: 170px; }
  .hero-character img { max-height: 170px; }
}

@media (max-width: 560px) {
  .game-grid { grid-template-columns: 1fr; }
}

.skill-hero{--skill-color:#6937d8;--skill-bg:#f1edff;--skill-border:#e6ddfa}
.skill-hero.grammar{--skill-color:#07966d;--skill-bg:#eaf8f4;--skill-border:#dcefe9}
.skill-hero.listening{--skill-color:#176fd0;--skill-bg:#edf6ff;--skill-border:#dbe9fa}
.skill-hero.reading{--skill-color:#ed3036;--skill-bg:#fff0f0;--skill-border:#f8dddd}
.skill-hero.writing{--skill-color:#ed7d00;--skill-bg:#fff4e6;--skill-border:#fae5ca}
.skill-hero.speaking{--skill-color:#0795a7;--skill-bg:#eaf9fb;--skill-border:#d7edf0}

/* MOBILE MENU TOGGLE */
.menu-toggle{display:none;width:38px;height:38px;padding:0;border:none;background:transparent;cursor:pointer;flex-direction:column;align-items:center;justify-content:center;gap:5px}
.menu-toggle span{display:block;width:22px;height:2px;background:var(--text);border-radius:2px;transition:transform .2s ease,opacity .2s ease}
.menu-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.menu-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.menu-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
@media(max-width:700px){
.menu-toggle{display:flex}
.main-nav{display:flex;flex-direction:column;align-items:flex-start;gap:4px;position:absolute;top:78px;left:0;right:0;background:#fff;border-bottom:1px solid #eef0f4;padding:14px 24px 20px;max-height:0;overflow:hidden;opacity:0;pointer-events:none;transition:max-height .25s ease,opacity .2s ease}
.main-nav.open{max-height:400px;opacity:1;pointer-events:auto}
.main-nav a{padding:8px 0;width:100%}
}