:root {
  --ink: #26364a;
  --muted: #66768a;
  --sky: #eefaff;
  --blue: #57c7ec;
  --blue-dark: #147da7;
  --yellow: #ffd95c;
  --pink: #ff83b7;
  --purple: #9f8cf5;
  --green: #63d6a3;
  --orange: #ffac59;
  --white: #ffffff;
  --line: rgba(38,54,74,.10);
  --shadow: 0 16px 35px rgba(57,92,121,.13);
  --radius-xl: 30px;
  --radius-lg: 22px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  font-family: ui-rounded, "Avenir Next", "Nunito", Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background:
    radial-gradient(circle at 12% 10%, rgba(255,255,255,.95) 0 8%, transparent 9%),
    linear-gradient(180deg, #bfefff 0%, #effaff 37%, #fffdf6 100%);
}
button, input { font: inherit; }
a { color: inherit; text-decoration: none; }
button, a { -webkit-tap-highlight-color: transparent; }
.hidden { display: none !important; }

.sky { position: fixed; inset: 0; overflow: hidden; pointer-events: none; z-index: -1; }
.sun { position: absolute; top: 55px; right: 7%; font-size: clamp(3rem, 8vw, 5rem); filter: drop-shadow(0 8px 10px rgba(255,190,48,.2)); }
.cloud { position: absolute; width: 190px; height: 60px; border-radius: 60px; background: rgba(255,255,255,.78); filter: blur(.3px); }
.cloud:before, .cloud:after { content:""; position:absolute; border-radius:50%; background:inherit; }
.cloud:before { width:88px; height:88px; left:26px; top:-39px; }
.cloud:after { width:66px; height:66px; left:92px; top:-26px; }
.cloud-1 { top: 120px; left: -70px; transform: scale(.78); }
.cloud-2 { top: 250px; right: -70px; transform: scale(.65); }
.cloud-3 { top: 720px; left: 7%; transform: scale(.45); opacity:.6; }
.star { position: absolute; color: rgba(255,255,255,.9); font-size: 2rem; }
.star-1 { left: 14%; top: 88px; transform: rotate(14deg); }
.star-2 { right: 24%; top: 190px; font-size: 1.4rem; }
.star-3 { left: 44%; top: 46px; font-size: 1.2rem; }

.page-shell { width: min(1180px, calc(100% - 32px)); margin: 0 auto; padding: 20px 0 32px; }
.site-header { display:flex; justify-content:space-between; align-items:center; gap:16px; padding: 6px 2px 12px; }
.brand { display:flex; align-items:center; gap:12px; }
.brand-mark { width:46px; height:46px; display:grid; place-items:center; border-radius:16px; background:linear-gradient(145deg,#ffcf55,#ff9d5a); color:#fff; font-weight:1000; font-size:1.45rem; box-shadow:0 7px 0 rgba(207,129,50,.18), 0 12px 20px rgba(93,83,41,.11); transform:rotate(-4deg); }
.brand strong { display:block; font-size:1.24rem; letter-spacing:-.03em; }
.brand small { display:block; color:#5c7490; font-size:.74rem; font-weight:800; margin-top:1px; }
.header-actions { display:flex; gap:8px; }
.header-btn { border:2px solid rgba(255,255,255,.78); background:rgba(255,255,255,.75); padding:9px 13px; border-radius:14px; color:#44627e; font-weight:900; font-size:.78rem; box-shadow:0 5px 15px rgba(46,94,130,.08); backdrop-filter: blur(8px); cursor:pointer; }
.header-btn:hover { transform: translateY(-2px); background:#fff; }

.hero { display:grid; grid-template-columns: 1.1fr .9fr; gap:24px; padding: 24px 0 24px; align-items:stretch; }
.hero-copy { padding: 18px 8px 14px; }
.hero-kicker { display:inline-flex; align-items:center; gap:8px; padding:8px 12px; border-radius:999px; background:#fff4bc; color:#775e13; font-size:.76rem; font-weight:1000; box-shadow:0 4px 12px rgba(210,170,40,.12); }
.hero h1 { margin:14px 0 13px; font-size: clamp(3rem, 7vw, 5.25rem); line-height:.94; letter-spacing:-.065em; font-weight:1000; }
.hero h1 span { color:#ff6da8; text-decoration: underline; text-decoration-color:#ffcb4e; text-decoration-thickness:7px; text-underline-offset:7px; }
.hero-copy p { max-width:640px; color:#5d7185; line-height:1.8; font-size:1.02rem; font-weight:650; margin:0; }
.hero-meta { display:flex; gap:9px; flex-wrap:wrap; margin-top:22px; }
.stat-pill { display:flex; align-items:baseline; gap:7px; padding:9px 13px; background:rgba(255,255,255,.82); border:2px solid rgba(255,255,255,.88); border-radius:15px; box-shadow:0 7px 17px rgba(64,102,130,.07); }
.stat-pill strong { font-size:1.1rem; }
.stat-pill span { color:#6d8092; font-size:.75rem; font-weight:850; }
.hero-card { position:relative; overflow:hidden; display:flex; flex-direction:column; min-height:330px; padding:20px; border-radius:var(--radius-xl); background:#fff; box-shadow: 0 18px 45px rgba(54,95,132,.15); border:4px solid rgba(255,255,255,.88); }
.hero-card:after { content:""; position:absolute; width:170px; height:170px; right:-55px; bottom:-65px; border-radius:50%; background:#e1f7ff; }
.hero-card-top { display:flex; align-items:center; gap:7px; color:#6c7e92; font-size:.75rem; font-weight:1000; position:relative; z-index:1; }
.featured-preview { position:relative; z-index:2; display:grid; grid-template-columns: .9fr 1.1fr; gap:15px; align-items:center; margin-top:15px; flex:1; }
.feature-art { min-height:195px; border-radius:24px; display:flex; flex-direction:column; align-items:center; justify-content:center; position:relative; overflow:hidden; box-shadow: inset 0 -12px 0 rgba(0,0,0,.05); }
.feature-art:before, .feature-art:after { content:""; position:absolute; border-radius:50%; background:rgba(255,255,255,.25); }
.feature-art:before { width:100px; height:100px; top:-22px; right:-18px; }
.feature-art:after { width:74px; height:74px; bottom:-25px; left:-18px; }
.feature-art span { font-size:4.6rem; filter:drop-shadow(0 6px 5px rgba(0,0,0,.10)); z-index:1; }
.feature-art b { margin-top:9px; color:#fff; background:rgba(255,255,255,.24); padding:6px 9px; border-radius:999px; font-size:.68rem; z-index:1; }
.feature-copy h3 { margin:11px 0 7px; font-size:1.55rem; line-height:1.08; letter-spacing:-.04em; }
.feature-copy p { color:#687b90; line-height:1.65; font-size:.82rem; margin:0; }
.featured-tag { display:inline-flex; padding:6px 9px; border-radius:999px; background:#fff1be; color:#7a6218; font-size:.68rem; font-weight:1000; }
.featured-cta { display:inline-flex; align-items:center; justify-content:center; gap:8px; margin-top:16px; padding:10px 14px; border-radius:13px; color:#fff; background:#ff6da8; box-shadow:0 5px 0 #dc528b, 0 9px 17px rgba(219,73,132,.16); font-size:.78rem; font-weight:1000; }
.featured-cta:hover { transform:translateY(-2px); }
.loading-blob { min-height:195px; border-radius:24px; background:#eef7fb; display:flex; flex-direction:column; align-items:center; justify-content:center; gap:10px; }
.loading-blob span { font-size:3.5rem; }
.loading-blob i { width:70%; height:10px; display:block; background:#dceef5; border-radius:99px; }
.loading-blob i:last-child { width:48%; }
.no-feature { text-align:center; padding: 30px 12px; }
.no-feature span { display:block; font-size:3rem; }
.no-feature strong { display:block; margin-top:8px; font-size:1.2rem; }
.no-feature p { color:#6a7d90; line-height:1.6; font-size:.8rem; }

.toolbar { display:flex; gap:13px; align-items:center; padding:12px 0 24px; }
.search-box { flex:1; min-width:230px; display:flex; align-items:center; gap:9px; background:#fff; border:3px solid #fff; border-radius:17px; padding:0 13px; box-shadow:0 7px 20px rgba(64,102,130,.09); }
.search-box span { font-size:1.12rem; }
.search-box input { width:100%; border:0; outline:0; background:transparent; color:var(--ink); padding:13px 0; font-size:.92rem; font-weight:750; }
.search-box input::placeholder { color:#9aa8b5; }
.filter-row { display:flex; gap:8px; flex-wrap:wrap; justify-content:flex-end; }
.filter-btn { border:2px solid #fff; color:#526a81; padding:9px 11px; border-radius:999px; font-weight:950; font-size:.74rem; cursor:pointer; box-shadow:0 4px 12px rgba(64,102,130,.05); transition:.15s ease; }
.filter-btn.active { color:#fff; transform:translateY(-2px); box-shadow:0 6px 12px rgba(61,88,112,.13); }
.filter-btn.rainbow { background:#fff5cb; }
.filter-btn.math { background:#dff7eb; }
.filter-btn.chinese { background:#ffe3ef; }
.filter-btn.reading { background:#e9e1ff; }
.filter-btn.science { background:#dff2ff; }
.filter-btn.games { background:#fff0d6; }
.filter-btn.other { background:#eef1f4; }
.filter-btn.rainbow.active { background:#ffbe4e; }
.filter-btn.math.active { background:#41bd87; }
.filter-btn.chinese.active { background:#ed659a; }
.filter-btn.reading.active { background:#8b73e8; }
.filter-btn.science.active { background:#3fa9dd; }
.filter-btn.games.active { background:#ee9743; }
.filter-btn.other.active { background:#667b8e; }

.section-heading { display:flex; align-items:end; justify-content:space-between; gap:12px; margin:8px 0 16px; }
.mini-kicker { color:#75879a; font-size:.68rem; font-weight:1000; letter-spacing:.12em; }
.section-heading h2 { margin:7px 0 0; font-size:1.9rem; letter-spacing:-.045em; }
.section-heading h2 span { font-size:1.4rem; }
.result-count { color:#6f8193; font-size:.78rem; font-weight:900; }

.app-grid { display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); gap:18px; }
.app-card { position:relative; min-height:285px; padding:16px; border-radius:24px; background:#fff; border:3px solid #fff; box-shadow:var(--shadow); display:flex; flex-direction:column; overflow:hidden; transition:transform .16s ease, box-shadow .16s ease; animation:cardIn .35s ease both; }
.app-card:after { content:""; position:absolute; width:120px; height:120px; border-radius:50%; right:-46px; bottom:-42px; opacity:.46; pointer-events:none; }
.app-card:hover { transform:translateY(-5px) rotate(-.5deg); box-shadow:0 22px 40px rgba(57,92,121,.18); }
.card-top { display:flex; justify-content:space-between; align-items:center; position:relative; z-index:2; }
.card-badge { padding:6px 9px; border-radius:999px; background:#f2f5f7; color:#62768b; font-size:.64rem; font-weight:1000; }
.favorite-btn { width:34px; height:34px; border:0; border-radius:50%; background:#f5f7f9; color:#a5b1bc; cursor:pointer; font-size:1.1rem; }
.favorite-btn.active { background:#fff1c6; color:#e7a82d; }
.app-icon-wrap { display:grid; place-items:center; margin-top:4px; }
.app-icon { width:82px; height:82px; display:grid; place-items:center; border-radius:27px; font-size:3rem; box-shadow:0 9px 0 rgba(0,0,0,.07), 0 12px 22px rgba(59,90,114,.10); transform:rotate(-2deg); }
.app-card h3 { margin:15px 0 5px; font-size:1.2rem; line-height:1.12; letter-spacing:-.03em; position:relative; z-index:2; }
.app-subtitle { color:#718397; font-size:.72rem; font-weight:850; line-height:1.4; position:relative; z-index:2; }
.app-description { color:#6a7c90; font-size:.79rem; line-height:1.62; margin:7px 0 0; min-height:48px; position:relative; z-index:2; }
.play-btn { margin-top:auto; position:relative; z-index:3; display:flex; align-items:center; justify-content:center; gap:8px; width:100%; padding:11px 12px; border-radius:14px; color:#fff; font-size:.79rem; font-weight:1000; box-shadow:0 5px 0 rgba(0,0,0,.12); }
.play-btn:hover { transform:translateY(-2px); }
.app-card.rainbow .app-icon { background:#ffe8a1; }
.app-card.rainbow:after { background:#fff0ba; }
.app-card.rainbow .play-btn { background:#ffb640; }
.app-card.math .app-icon { background:#b8efdb; }
.app-card.math:after { background:#ccefe1; }
.app-card.math .play-btn { background:#3dbb83; }
.app-card.chinese .app-icon { background:#ffc5df; }
.app-card.chinese:after { background:#ffdfed; }
.app-card.chinese .play-btn { background:#eb679a; }
.app-card.reading .app-icon { background:#cfc5ff; }
.app-card.reading:after { background:#e3ddff; }
.app-card.reading .play-btn { background:#8875e5; }
.app-card.science .app-icon { background:#bfe8fb; }
.app-card.science:after { background:#daf2fd; }
.app-card.science .play-btn { background:#3ba8d8; }
.app-card.games .app-icon { background:#ffd59d; }
.app-card.games:after { background:#ffead0; }
.app-card.games .play-btn { background:#ef9746; }
.app-card.other .app-icon { background:#dbe4ed; }
.app-card.other:after { background:#e8eef4; }
.app-card.other .play-btn { background:#64798d; }

.empty-state { text-align:center; padding:62px 20px; background:#fff; border:3px dashed #d8e3eb; border-radius:24px; box-shadow:0 10px 25px rgba(57,92,121,.06); }
.empty-icon { font-size:3rem; }
.empty-state h3 { margin:10px 0 5px; font-size:1.25rem; }
.empty-state p { margin:0 0 16px; color:#73869a; }
.primary-btn { border:0; background:#4abf92; color:#fff; padding:11px 15px; border-radius:13px; font-weight:950; box-shadow:0 5px 0 #32966e; cursor:pointer; }

.grownup-note { margin-top:27px; display:flex; gap:13px; align-items:center; padding:14px 16px; background:rgba(255,255,255,.76); border:2px solid #fff; border-radius:20px; box-shadow:0 7px 17px rgba(64,102,130,.06); }
.grownup-icon { width:42px; height:42px; display:grid; place-items:center; border-radius:14px; background:#eef2f5; flex:none; }
.grownup-note strong { font-size:.82rem; }
.grownup-note p { margin:3px 0 0; color:#75869a; font-size:.72rem; line-height:1.55; }
.grownup-note code { background:#eef3f6; padding:1px 5px; border-radius:5px; }
.site-footer { display:flex; justify-content:space-between; gap:16px; margin-top:25px; padding-top:14px; border-top:2px solid rgba(38,54,74,.08); color:#8392a1; font-size:.66rem; font-weight:800; }

@keyframes cardIn { from { opacity:0; transform:translateY(10px); } to { opacity:1; transform:translateY(0); } }
@media (max-width: 940px) {
  .hero { grid-template-columns:1fr; }
  .featured-preview { grid-template-columns:.8fr 1.2fr; }
  .app-grid { grid-template-columns:repeat(2,minmax(0,1fr)); }
  .toolbar { flex-direction:column; align-items:stretch; }
  .filter-row { justify-content:flex-start; }
}
@media (max-width: 620px) {
  .page-shell { width:min(100% - 18px, 560px); padding-top:12px; }
  .site-header { align-items:flex-start; }
  .header-btn { padding:8px 10px; }
  .header-btn span { display:none; }
  .brand-copy strong { font-size:1.1rem; }
  .hero { padding-top:16px; gap:17px; }
  .hero-copy { padding:8px 4px; }
  .hero h1 { font-size:3.05rem; }
  .hero-copy p { font-size:.92rem; }
  .hero-card { min-height:310px; padding:16px; }
  .featured-preview { grid-template-columns:1fr; gap:12px; }
  .feature-art { min-height:145px; }
  .feature-art span { font-size:3.6rem; }
  .app-grid { grid-template-columns:1fr; gap:15px; }
  .app-card { min-height:275px; }
  .section-heading { align-items:flex-end; }
  .grownup-note { align-items:flex-start; }
  .site-footer { flex-direction:column; gap:5px; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior:auto !important; transition:none !important; animation:none !important; }
}