@font-face{font-family:'Pretendard';font-weight:300;src:url(https://cdn.jsdelivr.net/gh/orioncactus/pretendard/dist/web/static/woff2/Pretendard-Light.woff2) format('woff2')}
@font-face{font-family:'Pretendard';font-weight:400;src:url(https://cdn.jsdelivr.net/gh/orioncactus/pretendard/dist/web/static/woff2/Pretendard-Regular.woff2) format('woff2')}
@font-face{font-family:'Pretendard';font-weight:500;src:url(https://cdn.jsdelivr.net/gh/orioncactus/pretendard/dist/web/static/woff2/Pretendard-Medium.woff2) format('woff2')}
@font-face{font-family:'Pretendard';font-weight:600;src:url(https://cdn.jsdelivr.net/gh/orioncactus/pretendard/dist/web/static/woff2/Pretendard-SemiBold.woff2) format('woff2')}
@font-face{font-family:'Pretendard';font-weight:700;src:url(https://cdn.jsdelivr.net/gh/orioncactus/pretendard/dist/web/static/woff2/Pretendard-Bold.woff2) format('woff2')}
@font-face{font-family:'Pretendard';font-weight:800;src:url(https://cdn.jsdelivr.net/gh/orioncactus/pretendard/dist/web/static/woff2/Pretendard-ExtraBold.woff2) format('woff2')}

:root{
  --bg:#f5f7fb;
  --bg-grad:linear-gradient(160deg,#eef2ff 0%,#fce7f3 25%,#fef3c7 50%,#ecfdf5 75%,#eef2ff 100%);
  --surface:rgba(255,255,255,.92);
  --surface-solid:#fff;
  --border:#e2e5f0;
  --border2:#d1d5e4;
  --text:#111827;
  --text2:#374151;
  --text3:#6b7280;
  --text4:#9ca3af;
  --accent:#4a7cff;
  --accent-bg:#eef2ff;
  --tag-bg:rgba(243,244,248,.9);
  --soon-op:.55;
  --shadow-hover:0 12px 40px rgba(74,124,255,.1);
  --header-bg:rgba(255,255,255,.78);
  --R:18px;
}

*{margin:0;padding:0;box-sizing:border-box}
body{
  font-family:'Pretendard',-apple-system,BlinkMacSystemFont,sans-serif;
  font-size:15px;
  background:var(--bg-grad);background-attachment:fixed;
  color:var(--text);-webkit-font-smoothing:antialiased;min-height:100vh;
}

header{
  background:var(--header-bg);
  backdrop-filter:saturate(180%) blur(20px);-webkit-backdrop-filter:saturate(180%) blur(20px);
  border-bottom:1px solid var(--border);
  padding:26px 24px 22px;text-align:center;
  position:sticky;top:0;z-index:100;
}
.hub-logo{display:inline-flex;align-items:center;gap:14px}
.hub-symbol{width:44px;height:44px;flex-shrink:0}
.hub-logo-text{display:flex;align-items:stretch;gap:10px}
.hub-logo-main{font-size:2em;font-weight:800;color:var(--text);letter-spacing:-1px;line-height:1}
.hub-logo-hub{font-size:.93em;font-weight:800;color:#fff;letter-spacing:3px;padding:0 14px;background:var(--accent);border-radius:6px;display:inline-flex;align-items:center}
.hub-subtitle{font-size:.93em;font-weight:400;color:var(--text3);margin-top:4px;letter-spacing:.2px}

.header-controls{position:absolute;top:50%;right:20px;transform:translateY(-50%);display:flex;align-items:center;gap:6px}
.lang-switcher{display:flex;gap:3px}
.lang-btn{padding:5px 10px;border:1.5px solid var(--border2);border-radius:20px;background:var(--surface);color:var(--text4);font-size:12px;font-weight:600;cursor:pointer;transition:all .18s;font-family:inherit}
.lang-btn:hover{border-color:var(--accent);color:var(--accent)}
.lang-btn.active{background:var(--accent);border-color:var(--accent);color:#fff}

.wrap{max-width:980px;margin:0 auto;padding:22px 24px 60px}

.search-row{display:flex;gap:8px;align-items:center;margin-bottom:14px}
.search{flex:1;position:relative}
.search input{width:100%;padding:12px 14px;padding-right:36px;background:var(--surface);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border:1px solid var(--border);border-radius:14px;font:400 1em 'Pretendard',sans-serif;color:var(--text);outline:none;transition:border .2s,box-shadow .2s}
.search input::placeholder{color:var(--text4)}
.search input:focus{border-color:var(--accent);box-shadow:0 0 0 3px rgba(74,124,255,.1)}
.search .x{position:absolute;right:10px;top:50%;transform:translateY(-50%);width:20px;height:20px;border-radius:50%;background:var(--tag-bg);border:none;font-size:11px;color:var(--text3);cursor:pointer;display:none;text-align:center;line-height:20px}
.search .x.on{display:block}

.btn-filter{padding:12px 18px;border-radius:12px;border:1px solid var(--border);background:var(--surface);font:500 1em 'Pretendard',sans-serif;color:var(--text4);cursor:pointer;transition:all .15s;white-space:nowrap;display:flex;align-items:center;gap:6px}
.btn-filter:hover{border-color:var(--text4)}
.btn-filter.has-filter{border-color:var(--accent);color:var(--accent);background:var(--accent-bg)}
.btn-filter svg{width:16px;height:16px}
.filter-count-badge{background:var(--accent);color:#fff;font-size:11px;font-weight:700;padding:1px 6px;border-radius:100px;display:none}
.filter-count-badge.on{display:inline}
.btn-reset{padding:10px 14px;border-radius:12px;border:1px solid var(--border);background:var(--surface);font:500 .87em 'Pretendard',sans-serif;color:var(--text4);cursor:pointer;display:none;transition:all .15s}
.btn-reset.on{display:block}
.btn-reset:hover{border-color:var(--text4);color:var(--text2)}

.grade-bar{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:14px}
.grade-btn{padding:8px 20px;border-radius:24px;border:1.5px solid var(--border2);background:var(--surface);color:var(--text3);font:600 .93em 'Pretendard',sans-serif;cursor:pointer;transition:all .2s;user-select:none;white-space:nowrap}
.grade-btn:hover{border-color:var(--accent);color:var(--accent);transform:translateY(-1px)}
.grade-btn.on{border-color:transparent;color:#fff;font-weight:700;box-shadow:0 3px 12px rgba(0,0,0,.08)}
.grade-btn[data-t="유아(5-7세)"].on{background:#f06292}
.grade-btn[data-t="초1-2"].on{background:#ff8a65}
.grade-btn[data-t="초3-4"].on{background:#ffd54f;color:#5d4037}
.grade-btn[data-t="초5-6"].on{background:#66bb6a}
.grade-btn[data-t="중고등학교"].on{background:#5c6bc0}

.filter-panel{max-height:0;overflow:hidden;transition:max-height .3s ease;background:var(--surface);border:1px solid var(--border);border-radius:14px;margin-bottom:14px}
.filter-panel.open{max-height:400px;padding:14px 16px}
.frow{display:flex;align-items:flex-start;gap:12px;margin-bottom:8px}
.frow:last-child{margin-bottom:0}
.frow-label{font-size:.87em;font-weight:600;color:var(--text4);min-width:44px;padding-top:6px;flex-shrink:0}
.frow-tags{display:flex;flex-wrap:wrap;gap:5px}
.ft{padding:6px 14px;border-radius:8px;border:1px solid var(--border2);background:var(--surface);color:var(--text3);font:500 .93em 'Pretendard',sans-serif;cursor:pointer;transition:all .15s;user-select:none}
.ft:hover{border-color:var(--text4);color:var(--text2)}
.ft.on{border-color:var(--accent);background:var(--accent-bg);color:var(--accent);font-weight:600}

.result-info{font-size:.93em;color:var(--text4);margin-bottom:14px;padding:0 2px;display:flex;justify-content:space-between;align-items:center}
.result-info strong{color:var(--text2);font-weight:600}

.sec-head{display:flex;align-items:center;gap:10px;margin:36px 0 14px}
.sec-head:first-child{margin-top:0}
[data-sec="web"]{margin-top:4px}
.sec-title{font-size:1.2em;font-weight:700;color:var(--text);letter-spacing:-.3px}
.sec-desc{font-size:.87em;color:var(--text4);font-weight:400}
.sec-line{flex:1;height:1.5px;background:linear-gradient(90deg,var(--accent) 0%,var(--border) 100%);border-radius:1px;opacity:.3}

.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(290px,1fr));gap:12px;align-items:stretch}
.card{
  background:var(--surface);
  backdrop-filter:saturate(140%) blur(12px);-webkit-backdrop-filter:saturate(140%) blur(12px);
  border:1px solid var(--border);border-radius:var(--R);
  padding:22px;text-decoration:none;color:var(--text);
  transition:all .25s ease;display:flex;flex-direction:column;
  position:relative;overflow:hidden;height:100%;min-height:200px;
}
.card:hover{border-color:var(--accent);box-shadow:var(--shadow-hover);transform:translateY(-4px)}
.card.hidden{display:none}
.card-bar{position:absolute;top:0;left:0;width:100%;height:4px;border-radius:var(--R) var(--R) 0 0}
.card-header{display:flex;align-items:flex-start;gap:12px}
.card-icon{width:48px;height:48px;border-radius:14px;object-fit:contain;flex-shrink:0;margin-top:2px}
.card-header-text{flex:1;min-width:0}
.card-name{font-size:1.13em;font-weight:700;letter-spacing:-.2px;margin-bottom:2px}
.card-desc{font-size:.87em;color:var(--text3);line-height:1.55}
.card-bottom{display:flex;align-items:center;justify-content:space-between;margin-top:auto;padding-top:12px;border-top:1px solid var(--border)}
.card-status{display:flex;align-items:center;gap:5px;font-size:.8em;color:var(--text4)}
.card-status .dot{width:6px;height:6px;border-radius:50%}
.card-link{font-size:.87em;color:var(--accent);font-weight:500;opacity:0;transition:opacity .2s}
.card:hover .card-link{opacity:1}
.card-tags{display:flex;flex-wrap:wrap;gap:3px;margin-top:10px}
.ct{font-size:.67em;font-weight:500;padding:2px 7px;border-radius:5px;background:var(--tag-bg);color:var(--text4);transition:all .15s}
.ct-grade{font-weight:600;color:var(--text3)}
.ct.lit{background:var(--accent-bg);color:var(--accent)}

.soon .card{opacity:var(--soon-op);border-style:dashed}
.soon .card:hover{opacity:.8}
.badge-soon{display:inline-block;font-size:.8em;font-weight:600;color:#b45309;background:#fef3c7;padding:2px 10px;border-radius:6px}

.grid-app{display:grid;grid-template-columns:repeat(auto-fill,minmax(290px,1fr));gap:12px}
.card-app{background:var(--surface);backdrop-filter:saturate(140%) blur(12px);-webkit-backdrop-filter:saturate(140%) blur(12px);border:1px solid var(--border);border-radius:16px;padding:18px 20px;display:flex;flex-direction:column;gap:10px;transition:all .25s}
.card-app:hover{border-color:var(--accent);box-shadow:var(--shadow-hover)}
.card-app.hidden{display:none}
.card-app-top{display:flex;align-items:center;gap:10px}
.card-app-dot{width:8px;height:8px;border-radius:3px;flex-shrink:0}
.card-app-icon{width:36px;height:36px;border-radius:10px;flex-shrink:0}
.card-app-name{font-size:1.07em;font-weight:600;color:var(--text)}
.card-app-desc{font-size:.87em;color:var(--text4);margin-top:2px}
.card-app-meta{display:flex;align-items:center;gap:8px}
.card-app .card-tags{margin-top:0}
.store-badges{display:flex;gap:6px;flex-wrap:wrap}
.store-badge{display:inline-flex;align-items:center;gap:5px;padding:7px 14px;border-radius:8px;border:1px solid var(--border2);background:var(--tag-bg);text-decoration:none;color:var(--text2);font-size:.87em;font-weight:500;transition:all .15s}
.store-badge:hover{border-color:var(--text4);background:var(--border)}
.store-badge svg{width:14px;height:14px;flex-shrink:0}

.grid-sm{display:grid;grid-template-columns:repeat(auto-fill,minmax(290px,1fr));gap:10px}
.card-sm{display:flex;align-items:flex-start;gap:12px;background:var(--surface);backdrop-filter:saturate(140%) blur(12px);-webkit-backdrop-filter:saturate(140%) blur(12px);border:1px solid var(--border);border-radius:14px;padding:14px 18px;text-decoration:none;color:var(--text);transition:all .25s}
.card-sm:hover{border-color:var(--accent);box-shadow:var(--shadow-hover)}
.card-sm.hidden{display:none}
.card-sm-dot{width:10px;height:10px;border-radius:3px;flex-shrink:0;margin-top:5px}
.card-sm-icon{width:32px;height:32px;border-radius:8px;flex-shrink:0;margin-top:2px}
.card-sm-body{flex:1;min-width:0}
.card-sm-name{font-size:1em;font-weight:600}
.card-sm-desc{font-size:.87em;color:var(--text4)}
.card-sm-meta{display:flex;align-items:center;gap:8px;margin-top:6px}
.card-sm .card-tags{margin-top:6px}

.empty{grid-column:1/-1;text-align:center;padding:48px 20px;color:var(--text4)}
.empty-text{font-size:1em;font-weight:500;margin-bottom:4px}
.empty-sub{font-size:.87em}

footer{background:var(--header-bg);backdrop-filter:saturate(180%) blur(20px);-webkit-backdrop-filter:saturate(180%) blur(20px);border-top:1px solid var(--border);text-align:center;padding:28px 24px 36px;transition:background .3s}
.footer-brand{font-size:.93em;font-weight:700;color:var(--text4);opacity:.4;margin-bottom:6px;letter-spacing:1px}
.footer-copy{font-size:.8em;color:var(--text4)}

@media(max-width:700px){
  .wrap{padding:16px}
  .grid,.grid-app,.grid-sm{grid-template-columns:1fr}
  .search-row{flex-wrap:wrap}
  .search{flex-basis:100%}
  .sec-title{font-size:1.07em}
  .frow{flex-direction:column;gap:4px}
  .frow-label{padding-top:0}
  .header-controls{position:static;transform:none;justify-content:center;margin-top:10px;flex-wrap:wrap}
  header{padding-bottom:14px}
}

.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.skip-link{position:absolute;top:-100%;left:50%;transform:translateX(-50%);background:var(--accent);color:#fff;padding:10px 20px;border-radius:0 0 8px 8px;font-weight:600;font-size:.93em;text-decoration:none;z-index:9999;transition:top .15s}
.skip-link:focus{top:0;outline:none}
:focus-visible{outline:2.5px solid var(--accent);outline-offset:2px;border-radius:4px}
:focus:not(:focus-visible){outline:none}
.card:focus-visible,.card-sm:focus-visible,.card-app:focus-visible{outline:2.5px solid var(--accent);outline-offset:2px;transform:translateY(-1px);box-shadow:var(--shadow-hover)}
.ft:focus-visible{outline:2.5px solid var(--accent);outline-offset:2px}
@media(prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important}}

.mobile-controls{display:none}
@media(max-width:700px){
  .header-controls{display:none}
  .mobile-controls{display:flex;align-items:center;justify-content:center;gap:6px;margin-top:10px;flex-wrap:wrap}
  .mobile-controls .lang-btn{padding:5px 9px;font-size:11px}
  header{padding:14px 16px 12px}
  .hub-symbol{width:36px;height:36px}
  .hub-logo-main{font-size:1.6em}
  .hub-logo-hub{font-size:.8em;padding:0 10px}
  .hub-logo{gap:10px}
  .hub-subtitle{font-size:.8em}
}

/* ── Category section headers ──────────────────── */
.cat-head{display:flex;align-items:center;gap:12px;margin:36px 0 14px}
.cat-head:first-child{margin-top:4px}
.cat-icon{
  width:36px;height:36px;border-radius:10px;
  display:flex;align-items:center;justify-content:center;flex-shrink:0;
}
.cat-icon-inner{width:18px;height:18px;display:block}
[data-cat="coding"] .cat-icon-inner{background:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='white' viewBox='0 0 24 24'%3E%3Cpath d='M9.4 16.6L4.8 12l4.6-4.6L8 6l-6 6 6 6 1.4-1.4zm5.2 0l4.6-4.6-4.6-4.6L16 6l6 6-6 6-1.4-1.4z'/%3E%3C/svg%3E") center/contain no-repeat}
[data-cat="ai"] .cat-icon-inner{background:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='white' viewBox='0 0 24 24'%3E%3Cpath d='M21 10.12h-6.78l2.74-2.82c-2.73-2.7-7.15-2.8-9.88-.1-2.73 2.71-2.73 7.08 0 9.79s7.15 2.71 9.88 0A6.97 6.97 0 0 0 19 12.28h2c0 2.46-.96 4.77-2.71 6.51C14.36 22.72 8.64 22.72 4.7 18.79.77 14.85.77 9.15 4.7 5.22c3.93-3.94 10.3-3.94 14.24 0L21 3v7.12z'/%3E%3C/svg%3E") center/contain no-repeat}
[data-cat="data"] .cat-icon-inner{background:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='white' viewBox='0 0 24 24'%3E%3Cpath d='M19 3H5c-1.1 0-2 .9-2 2v14c0 1.1.9 2 2 2h14c1.1 0 2-.9 2-2V5c0-1.1-.9-2-2-2zM9 17H7v-7h2v7zm4 0h-2V7h2v10zm4 0h-2v-4h2v4z'/%3E%3C/svg%3E") center/contain no-repeat}
[data-cat="sim"] .cat-icon-inner{background:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='white' viewBox='0 0 24 24'%3E%3Cpath d='M15 7.5V2H9v5.5l3 3 3-3zM7.5 9H2v6h5.5l3-3-3-3zM9 16.5V22h6v-5.5l-3-3-3 3zM16.5 9l-3 3 3 3H22V9h-5.5z'/%3E%3C/svg%3E") center/contain no-repeat}
.cat-text{display:flex;flex-direction:column;gap:1px}
.cat-title{font-size:1.27em;font-weight:700;color:var(--text);letter-spacing:-.3px}
.cat-desc{font-size:.8em;color:var(--text4);font-weight:400}
.cat-line{flex:1;height:2px;border-radius:1px;opacity:.25}

/* ── Soon card (within category) ──────────────── */
.card-soon{opacity:var(--soon-op);border-style:dashed}
.card-soon:hover{opacity:.8}

/* ── Category quick nav bar ────────────────────── */
.cat-nav{
  display:flex;gap:8px;margin-bottom:16px;flex-wrap:wrap;
}
.cat-nav-btn{
  display:inline-flex;align-items:center;gap:6px;
  padding:9px 18px;border-radius:12px;
  border:1.5px solid var(--border2);
  background:var(--surface);color:var(--text3);
  font:600 .87em 'Pretendard',sans-serif;
  cursor:pointer;transition:all .2s;user-select:none;white-space:nowrap;
}
.cat-nav-btn:hover{
  border-color:var(--cat-c,var(--accent));
  color:var(--cat-c,var(--accent));
  transform:translateY(-1px);
  box-shadow:0 4px 16px rgba(0,0,0,.06);
}
.cat-nav-btn.active{
  background:var(--cat-c,var(--accent));
  border-color:var(--cat-c,var(--accent));
  color:#fff;
  box-shadow:0 4px 16px rgba(0,0,0,.1);
}
.cat-nav-dot{
  width:8px;height:8px;border-radius:50%;flex-shrink:0;
  transition:transform .2s;
}
.cat-nav-btn:hover .cat-nav-dot{transform:scale(1.3)}
.cat-nav-btn.active .cat-nav-dot{background:#fff!important}