:root{
  --bg:#eef1f5; --panel:#ffffff; --ink:#1f2430; --sub:#737b8c; --line:#e1e5ec;
  --accent:#06c755; --accent-d:#04a948; --soft:#f2f5f8;
  --shadow:0 1px 2px rgba(20,28,46,.06),0 6px 18px rgba(20,28,46,.08);
  --radius:14px;
}
*{box-sizing:border-box;}
html,body{margin:0;}
body{font-family:"Hiragino Kaku Gothic ProN","Hiragino Sans",-apple-system,"system-ui",Meiryo,sans-serif;color:var(--ink);background:var(--bg);-webkit-font-smoothing:antialiased;}
a{color:inherit;text-decoration:none;}

/* ===== ポータル（index）レイアウト ===== */
body.portal{display:grid;grid-template-columns:264px 1fr;min-height:100vh;}

/* --- サイドバー --- */
.sidebar{background:var(--panel);border-right:1px solid var(--line);padding:20px 16px;display:flex;flex-direction:column;gap:18px;position:sticky;top:0;height:100vh;overflow-y:auto;}
.sidebar-brand a{display:flex;flex-direction:column;gap:2px;}
.brand-name{font-size:20px;font-weight:800;letter-spacing:.02em;}
.brand-tag{font-size:10.5px;font-weight:700;letter-spacing:.14em;color:var(--accent-d);text-transform:uppercase;}
.sidebar-filters{display:flex;flex-direction:column;gap:12px;}
.filter-search{width:100%;border:1px solid var(--line);border-radius:10px;padding:9px 12px;font-size:13px;background:var(--soft);min-height:40px;}
.filter-search:focus{outline:none;border-color:var(--accent);background:#fff;}
.filter-group{border:1px solid var(--line);border-radius:10px;padding:6px 10px;}
.filter-group summary{cursor:pointer;font-size:12.5px;font-weight:700;color:var(--sub);padding:4px 2px;list-style:none;}
.filter-group summary::-webkit-details-marker{display:none;}
.filter-items{display:flex;flex-direction:column;gap:2px;padding:4px 0 2px;}
.filter-check{display:flex;align-items:center;gap:8px;font-size:13px;padding:8px 6px;border-radius:8px;cursor:pointer;min-height:40px;}
.filter-check:hover{background:var(--soft);}
.filter-check input{width:16px;height:16px;accent-color:var(--accent);}
.filter-check span:nth-child(2){flex:1;}
.filter-count{font-size:11px;font-weight:700;color:var(--sub);background:var(--soft);border-radius:999px;padding:1px 8px;}
.filter-sort-wrap{display:flex;align-items:center;gap:8px;}
.filter-sort-label{font-size:12px;font-weight:700;color:var(--sub);}
.filter-sort{flex:1;border:1px solid var(--line);border-radius:9px;padding:8px 10px;font-size:12.5px;background:var(--soft);min-height:38px;}
.filter-reset{border:1px solid var(--line);background:#fff;border-radius:9px;padding:8px;font-size:12px;font-weight:700;color:var(--sub);cursor:pointer;min-height:38px;}
.filter-reset:hover{background:var(--soft);}
.sidebar-sl-list{display:flex;flex-direction:column;gap:8px;flex:1;}
.sl-section-title{display:flex;justify-content:space-between;align-items:center;font-size:11px;font-weight:800;letter-spacing:.08em;color:var(--sub);margin:0 2px 6px;text-transform:uppercase;}
.section-count{background:var(--soft);border-radius:999px;padding:1px 8px;}
.sl-section-items{display:flex;flex-direction:column;gap:3px;}
.sl-link{display:flex;align-items:center;justify-content:space-between;gap:8px;padding:9px 10px;border-radius:9px;min-height:44px;}
.sl-link:hover{background:var(--soft);}
.sl-link[aria-current="page"]{background:#eafaf0;}
.sl-info{display:flex;flex-direction:column;gap:1px;min-width:0;}
.sl-char{font-size:11px;font-weight:700;color:var(--accent-d);}
.sl-proj{font-size:12.5px;color:var(--ink);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:150px;}
.sl-meta{font-size:11px;font-weight:800;color:var(--sub);white-space:nowrap;text-align:right;line-height:1.2;}
.sl-meta-u{display:block;font-size:9px;font-weight:600;}
.sl-empty{font-size:12.5px;color:var(--sub);padding:14px;text-align:center;}

/* --- ハンバーガー（≤900pxで表示） --- */
.sidebar-toggle{display:none;position:fixed;top:12px;left:12px;z-index:230;width:44px;height:44px;border:1px solid var(--line);background:#fff;border-radius:11px;flex-direction:column;align-items:center;justify-content:center;gap:4px;cursor:pointer;box-shadow:var(--shadow);}
.sidebar-toggle-bar{width:20px;height:2px;background:var(--ink);border-radius:2px;}
.sidebar-close{display:none;position:absolute;top:14px;right:14px;width:34px;height:34px;border:0;background:var(--soft);border-radius:9px;font-size:20px;line-height:1;color:var(--sub);cursor:pointer;}
.sidebar-backdrop{position:fixed;inset:0;background:rgba(20,28,46,.42);z-index:215;border:0;}

/* --- メイン --- */
.main-content{min-width:0;}
.hero{padding:46px 40px 30px;background:linear-gradient(180deg,#fff,var(--bg));border-bottom:1px solid var(--line);}
.eyebrow{margin:0 0 6px;font-size:11px;font-weight:800;letter-spacing:.16em;color:var(--accent-d);}
.hero h1{margin:0;font-size:30px;letter-spacing:.02em;}
.hero-sub{margin:10px 0 0;font-size:14px;color:var(--sub);line-height:1.7;max-width:640px;}
.stats{display:flex;gap:30px;margin-top:22px;}
.stat{display:flex;flex-direction:column;}
.stat-value{font-size:28px;font-weight:800;line-height:1;font-variant-numeric:tabular-nums;}
.stat-label{font-size:11.5px;font-weight:700;color:var(--sub);margin-top:5px;}
.container{padding:28px 40px 56px;display:flex;flex-direction:column;gap:18px;}

/* --- キャラ別アコーディオン --- */
.char-group{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden;}
.char-summary{display:flex;align-items:center;gap:12px;padding:16px 20px;cursor:pointer;list-style:none;min-height:44px;}
.char-summary::-webkit-details-marker{display:none;}
.char-summary::before{content:"▸";color:var(--sub);font-size:13px;transition:transform .18s;}
.char-group[open] .char-summary::before{transform:rotate(90deg);}
.char-avatar{display:inline-flex;align-items:center;justify-content:center;width:30px;height:30px;border-radius:50%;color:#fff;font-size:13px;font-weight:800;flex:0 0 30px;}
.char-name{font-size:18px;font-weight:800;flex:1;}
.char-count{font-size:11px;font-weight:700;color:var(--accent-d);background:#eafaf0;border-radius:999px;padding:2px 10px;}
.char-rows{display:flex;flex-direction:column;padding:0 8px 8px;}
.board-row{display:flex;align-items:center;gap:14px;padding:12px 14px;border-top:1px solid var(--line);min-height:64px;border-radius:10px;}
.board-row:first-child{border-top:0;}
.board-row:hover{background:var(--soft);}
.row-avatar{display:inline-flex;align-items:center;justify-content:center;width:42px;height:42px;border-radius:50%;color:#fff;font-size:16px;font-weight:800;flex:0 0 42px;}
.row-main{flex:1;min-width:0;display:flex;flex-direction:column;gap:3px;}
.row-title{font-size:14.5px;font-weight:700;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.row-sub{font-size:12px;color:var(--sub);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.row-meta{display:flex;gap:18px;align-items:center;flex:0 0 auto;}
.row-stat{font-size:12px;color:var(--sub);white-space:nowrap;}
.row-stat b{font-size:15px;color:var(--ink);font-variant-numeric:tabular-nums;margin-right:3px;}
.row-chev{color:#b9c0cc;font-size:22px;line-height:1;flex:0 0 auto;}
.empty-state{padding:48px 24px;text-align:center;color:var(--sub);font-size:14px;line-height:1.9;background:var(--panel);border:1px dashed var(--line);border-radius:var(--radius);}
.empty-state code{background:var(--soft);border-radius:6px;padding:2px 6px;font-size:12.5px;}

/* ===== ボードページの上部バー ===== */
#viewport{touch-action:none;}  /* ネイティブのピンチ/スクロールを止めて自前ズームへ */
.board-topbar{position:fixed;top:14px;left:50%;transform:translateX(-50%);z-index:30;display:flex;align-items:center;gap:14px;background:#fff;border:1px solid var(--line);border-radius:13px;padding:9px 12px 9px 14px;box-shadow:var(--shadow);max-width:calc(100vw - 28px);}
.bt-back{font-size:12.5px;font-weight:700;color:var(--accent-d);white-space:nowrap;padding:6px 8px;border-radius:8px;}
.bt-back:hover{background:var(--soft);}
.bt-title{display:flex;flex-direction:column;line-height:1.3;min-width:0;}
.bt-title strong{font-size:13.5px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.bt-title span{font-size:11px;color:var(--sub);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.bt-select{border:1px solid var(--line);border-radius:9px;padding:7px 9px;font-size:12px;background:var(--soft);max-width:190px;min-height:36px;}
.board-body .stepnav{top:84px;}

/* ===== レスポンシブ（≤900 / ≤600 / ≤400） ===== */
@media (max-width:900px){
  body.portal{grid-template-columns:1fr;}
  .sidebar-toggle{display:flex;}
  .sidebar-close{display:block;}
  .sidebar{position:fixed;top:0;left:0;height:100vh;width:280px;max-width:85vw;transform:translateX(-100%);transition:transform .22s ease;z-index:220;box-shadow:4px 0 18px rgba(0,0,0,.15);}
  body.sidebar-open .sidebar{transform:translateX(0);}
  body.sidebar-open{overflow:hidden;}
  .main-content{padding-top:60px;}
  .hero{padding:24px 22px 24px;}
}
@media (max-width:600px){
  .hero h1{font-size:24px;}
  .hero-sub{font-size:13px;}
  .stats{gap:22px;}
  .stat-value{font-size:24px;}
  .container{padding:20px 14px 40px;gap:14px;}
  .char-summary{padding:14px 16px;}
  .char-name{font-size:16px;}
  .char-rows{padding:0 6px 8px;}
  .board-row{padding:10px;gap:11px;min-height:60px;}
  .row-avatar{width:38px;height:38px;flex-basis:38px;font-size:15px;}
  .row-meta{gap:12px;}
  .board-topbar{left:8px;right:8px;transform:none;max-width:none;gap:10px;}
  .bt-select{max-width:130px;}
  .board-body .hint{display:none;}
}
@media (max-width:400px){
  .hero h1{font-size:21px;}
  .hero{padding:20px 16px;}
  .container{padding:16px 12px 36px;}
  .board-row{padding:9px 8px;gap:10px;}
  .row-title{font-size:13.5px;}
  .row-stat b{font-size:14px;}
  .bt-title strong{font-size:12.5px;}
  .bt-select{max-width:104px;}
}