:root{
  --bg:#F7F5F0;
  --bg-alt:#FBFAF6;
  --card:#FFFFFF;
  --ink:#1F1D1A;
  --ink-soft:#4D4A45;
  --ink-mute:#8B867D;
  --line:#E6E1D6;
  --line-soft:#EFEAE0;
  --accent:#C8654A;
  --shadow:0 1px 2px rgba(31,29,26,0.04), 0 6px 18px rgba(31,29,26,0.06);
  --shadow-hover:0 2px 6px rgba(31,29,26,0.08), 0 14px 32px rgba(31,29,26,0.12);
  --shadow-tile:0 8px 24px rgba(31,29,26,0.10);
  --shadow-tile-hover:0 14px 36px rgba(31,29,26,0.18);
  --radius:14px;
  --radius-sm:10px;
  --radius-lg:18px;
  --maxw:1280px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
html,body{margin:0;padding:0}
body{
  background:var(--bg);
  color:var(--ink);
  font:16px/1.55 -apple-system,BlinkMacSystemFont,"Segoe UI",system-ui,sans-serif;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
a{color:inherit}
.container{max-width:var(--maxw);margin:0 auto;padding:0 28px}

/* HEADER (compact) */
header.hero{padding:48px 0 26px}
.hero-row{display:flex;justify-content:space-between;align-items:flex-start;gap:32px;flex-wrap:wrap}
.brand{display:flex;align-items:baseline;gap:14px}
.brand .logo{font-size:36px;font-weight:700;letter-spacing:-0.025em;color:var(--ink)}
.brand .logo .dot{color:var(--accent)}
.brand .tagline{color:var(--ink-mute);font-size:14px}
.hero-intro{max-width:560px;margin-top:14px;color:var(--ink-soft);font-size:16px;line-height:1.55}

/* COMPACT COMMENT (in hero) */
.comment-compact{flex:0 1 380px;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:18px 18px 16px;box-shadow:var(--shadow)}
.comment-compact h3{margin:0 0 3px;font-size:14px;font-weight:600}
.comment-compact p{margin:0 0 10px;color:var(--ink-mute);font-size:12.5px}
.comment-compact textarea{width:100%;min-height:64px;padding:10px 12px;border:1px solid var(--line);border-radius:var(--radius-sm);font:13.5px/1.5 inherit;background:var(--bg-alt);resize:vertical;color:var(--ink)}
.comment-compact textarea:focus{outline:none;border-color:var(--ink);background:#fff}
.comment-row{display:flex;justify-content:space-between;align-items:center;gap:8px;margin-top:8px}
.comment-row select{flex:1;padding:7px 10px;border:1px solid var(--line);border-radius:var(--radius-sm);background:var(--card);font:12.5px inherit;color:var(--ink)}
.comment-row button{padding:8px 16px;background:var(--ink);color:#F8F6F1;border:none;border-radius:var(--radius-sm);font:12.5px/1 inherit;font-weight:600;cursor:pointer;transition:all 0.15s;white-space:nowrap}
.comment-row button:hover{background:#2a2825}

/* TILE GRID (the boards) */
.boards{padding:14px 0 60px}
.tiles{display:grid;grid-template-columns:repeat(4, 1fr);gap:14px}

.tile{
  position:relative;
  padding:24px 22px 22px;
  border-radius:var(--radius-lg);
  color:#fff;
  cursor:pointer;
  transition:transform 0.22s cubic-bezier(0.4,0,0.2,1), box-shadow 0.22s, opacity 0.22s, filter 0.22s;
  min-height:188px;
  display:flex;flex-direction:column;justify-content:space-between;
  overflow:hidden;
  border:none;
  text-align:left;
  font-family:inherit;
  background:linear-gradient(135deg, var(--c1) 0%, var(--c2) 100%);
  box-shadow:var(--shadow-tile);
  isolation:isolate;
}
.tile::before{
  content:"";
  position:absolute;
  inset:0;
  background:radial-gradient(circle at 90% 10%, rgba(255,255,255,0.16) 0%, transparent 55%);
  pointer-events:none;
  z-index:0;
}
.tile > *{position:relative;z-index:1}
.tile:hover{transform:translateY(-3px);box-shadow:var(--shadow-tile-hover)}
.tile:focus{outline:2px solid var(--ink);outline-offset:3px}
.tile-num{font-size:11px;letter-spacing:0.14em;font-weight:600;opacity:0.78;font-variant-numeric:tabular-nums;text-transform:uppercase}
.tile-name{margin:6px 0 0;font-size:21px;font-weight:700;line-height:1.18;letter-spacing:-0.012em}
.tile-lead{margin:8px 0 0;font-size:13.5px;line-height:1.45;opacity:0.92;font-weight:400}
.tile-foot{display:flex;justify-content:space-between;align-items:flex-end;margin-top:auto;padding-top:18px}
.tile-count{font-size:12px;padding:4px 10px;background:rgba(255,255,255,0.20);border-radius:999px;font-weight:600;letter-spacing:0.01em;backdrop-filter:blur(4px);-webkit-backdrop-filter:blur(4px)}
.tile-count.empty{background:rgba(255,255,255,0.12);font-weight:400;opacity:0.85}
.tile-arrow{width:28px;height:28px;display:flex;align-items:center;justify-content:center;background:rgba(255,255,255,0.18);border-radius:999px;font-size:14px;transition:transform 0.22s, background 0.22s}
.tile:hover .tile-arrow{background:rgba(255,255,255,0.28)}

/* Tile state when section is open */
.tile.is-active{transform:translateY(-3px) scale(1.02);box-shadow:0 18px 42px rgba(31,29,26,0.22), 0 0 0 3px var(--c1)}
.tile.is-active .tile-arrow{transform:rotate(90deg);background:rgba(255,255,255,0.32)}
.tiles.has-active .tile:not(.is-active){opacity:0.55;filter:saturate(0.7)}
.tiles.has-active .tile:not(.is-active):hover{opacity:0.85;filter:saturate(0.9)}

/* DETAIL PANEL */
.detail{
  margin-top:32px;
  padding:30px 32px 36px;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  box-shadow:var(--shadow);
  display:none;
  scroll-margin-top:20px;
  position:relative;
}
.detail.open{display:block}
.detail-head{display:flex;align-items:baseline;gap:14px;margin-bottom:6px;flex-wrap:wrap}
.detail-bar{width:34px;height:4px;border-radius:2px;align-self:center;background:var(--c1)}
.detail-num{font-size:12px;color:var(--ink-mute);font-variant-numeric:tabular-nums;letter-spacing:0.12em;font-weight:600;text-transform:uppercase}
.detail-name{margin:0;font-size:26px;font-weight:700;letter-spacing:-0.015em}
.detail-close{position:absolute;top:18px;right:20px;width:32px;height:32px;display:flex;align-items:center;justify-content:center;border:1px solid var(--line);border-radius:999px;background:var(--card);cursor:pointer;color:var(--ink-soft);font-size:16px;line-height:1;transition:all 0.15s;font-family:inherit}
.detail-close:hover{background:var(--bg-alt);color:var(--ink);border-color:var(--ink-mute)}
.detail-lead{margin:0 0 18px;color:var(--ink-soft);max-width:760px;font-size:15px;line-height:1.55}
.detail-summary{margin:0 0 22px;padding:14px 18px;background:var(--bg-alt);border-left:3px solid var(--c1);border-radius:6px;color:var(--ink-soft);font-size:14.5px;line-height:1.6}
.empty-note{padding:22px 24px;background:var(--bg-alt);border:1px dashed var(--line);border-radius:var(--radius);color:var(--ink-mute);font-size:14px;text-align:center}

/* GROUP HEADING inside panel */
.group-head{margin:22px 0 12px;display:flex;align-items:center;gap:12px}
.group-head .label{font-size:11px;letter-spacing:0.14em;text-transform:uppercase;color:var(--ink-mute);font-weight:700}
.group-head .line{flex:1;height:1px;background:var(--line-soft)}

/* CARD GRID inside panel */
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:12px}
.card{display:flex;flex-direction:column;padding:16px 16px 14px;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);text-decoration:none;color:var(--ink);transition:all 0.18s ease;min-height:118px;position:relative}
.card:hover{transform:translateY(-2px);box-shadow:var(--shadow);border-color:var(--c1)}
.card .kind{position:absolute;top:13px;right:14px;font-size:10px;letter-spacing:0.08em;text-transform:uppercase;font-weight:700;color:var(--ink-mute)}
.card:hover .kind{color:var(--c1)}
.card.kind-download .kind{color:var(--c1)}
.card h4{margin:0 0 6px;font-size:15px;font-weight:600;letter-spacing:-0.005em;line-height:1.35;padding-right:62px}
.card .note{margin:0;color:var(--ink-mute);font-size:12.5px;flex:1}
.card .tags{margin-top:10px;display:flex;flex-wrap:wrap;gap:5px}
.card .tag{display:inline-block;padding:2.5px 8px;background:var(--bg-alt);border:1px solid var(--line-soft);border-radius:999px;font-size:10.5px;color:var(--ink-soft);font-weight:500}

/* FOOTER */
footer{margin-top:60px;padding:28px 0 50px;border-top:1px solid var(--line);color:var(--ink-mute);font-size:13px;text-align:center}
footer a{color:var(--ink-soft);text-decoration:none;border-bottom:1px solid var(--line)}

@media (max-width: 1100px){
  .tiles{grid-template-columns:repeat(3, 1fr)}
}
@media (max-width: 820px){
  header.hero{padding:36px 0 22px}
  .brand .logo{font-size:30px}
  .container{padding:0 18px}
  .tiles{grid-template-columns:repeat(2, 1fr);gap:10px}
  .tile{min-height:160px;padding:20px 18px}
  .tile-name{font-size:18px}
  .detail{padding:24px 22px 28px}
  .detail-name{font-size:22px}
  .grid{grid-template-columns:1fr}
}
@media (max-width: 480px){
  .tiles{grid-template-columns:1fr}
  .hero-row{flex-direction:column}
  .comment-compact{flex:1 1 100%}
}