/* ---- Modern, clean poster-demo styling ---- */
:root{
  --header-offset: 0px;
  --bg: #0b0d10;
  --card: #12161b;
  --muted: #9aa4ad;
  --text: #e8edf2;
  --accent: #7bdcf7;
  --border: #1e242c;
  --ring: #2b8cff;
}

@media (prefers-color-scheme: light){
  :root{
    --bg:#f6f8fb; --card:#ffffff; --muted:#5b6570; --text:#0d1117; --accent:#007aff; --accent-2:#06b6d4; --border:#e6e9ef; --ring:#2563eb;
  }
}

*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0; font:16px/1.6 system-ui, -apple-system, Segoe UI, Roboto, Noto Sans JP, Helvetica, Arial, "Apple Color Emoji","Segoe UI Emoji";
  color: var(--text);
  background: var(--bg);
  padding-top:calc(var(--header-offset, 0px) + env(safe-area-inset-top, 0));
}

/* accessibility */
.skip-link{position:absolute; left:-9999px; top:auto; width:1px; height:1px; overflow:hidden;}
.skip-link:focus{left:1rem; top:1rem; width:auto; height:auto; padding:.5rem .75rem; background:var(--ring); color:white; border-radius:.5rem; z-index:1000}

.container{max-width:1100px; margin-inline:auto; padding-inline:20px}

.site-header{
  position:fixed;
  top:0; left:0; right:0;
  z-index:1000;
  padding-top:env(safe-area-inset-top, 0);
  backdrop-filter:saturate(120%) blur(8px);
  -webkit-backdrop-filter:saturate(120%) blur(8px);
  background-color:color-mix(in srgb, var(--bg) 85%, transparent);
  border-bottom:1px solid var(--border);
}
.site-header.is-scrolled{box-shadow:0 2px 12px rgba(0,0,0,.08)}
.header-inner{
  display:flex; align-items:center; justify-content:space-between;
  min-height:64px;
  padding-block:.5rem;
  flex-wrap:wrap;
  row-gap:.5rem;
}
.branding{display:flex; align-items:center; gap:.6rem}
.logo{font-size:1.4rem}
.brand-text{font-weight:700; letter-spacing:.2px}
.top-nav{
  display:flex; gap:1rem;
  overflow-x:auto;
  -webkit-overflow-scrolling:touch;
  white-space:nowrap;
}
.top-nav a{
  color:var(--text);
  text-decoration:none;
  opacity:.9;
  border:1px solid transparent;
  padding:.35rem .6rem;
  border-radius:.6rem;
  flex:0 0 auto;
  transition:background-color .2s ease, color .2s ease, border-color .2s ease, box-shadow .2s ease;
}
.top-nav a:focus-visible{
  outline:none;
  border-color:var(--ring);
  box-shadow:0 0 0 2px color-mix(in srgb, var(--ring) 45%, transparent);
}
.top-nav a:hover{border-color:var(--border); background:color-mix(in srgb, var(--card) 80%, transparent)}
.top-nav a.is-active{
  color:var(--text);
  background:none;
  border-color:var(--border);
  box-shadow:0 0 0 1px color-mix(in srgb, var(--border) 80%, transparent);
  font-weight:600;
  text-decoration:underline;
  opacity:1;
}

.content{padding-block:28px}
.content > section{scroll-margin-top:calc(var(--header-offset) + env(safe-area-inset-top, 0))}
.card{
  background:var(--card); border:1px solid var(--border); border-radius:16px;
  padding:20px; margin-block:16px; box-shadow:0 8px 20px rgba(0,0,0,.14);
}
.title-jp{margin:0 0 .25rem 0; font-size:1rem; color:var(--muted); font-weight:600; letter-spacing:.06em}
.paper-title{margin:.2rem 0 0 0; font-size:clamp(1.3rem, 1.1rem + 1.2vw, 2rem); line-height:1.35}
.conf{margin:.5rem 0 0; color:var(--muted)}

.authors{font-size:1rem}
.affil{color:var(--muted)}
.contact{color:var(--muted); font-size:.95rem}

.section-lead{margin-top:0; color:var(--muted)}

.filters{display:grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap:12px; margin-block:12px 6px}
.filters.two-col{grid-template-columns: repeat(2, minmax(0,1fr));}
.filters.single{grid-template-columns:1fr}
.filter{display:flex; gap:.5rem; align-items:center}
.filter label{white-space:nowrap; font-weight:600; font-size:.95rem}
.filter select{width:100%; padding:.6rem .7rem; border-radius:10px; border:1px solid var(--border); background:var(--bg); color:var(--text); outline:2px solid transparent; outline-offset:2px}
.filter select:focus{outline-color:var(--ring)}

.model-audio-columns{display:grid; grid-template-columns:repeat(2, minmax(0,1fr)); gap:16px; margin-top:14px}
.model-audio{display:flex; flex-direction:column; gap:12px}
.model-audio-title{margin:0 0 .75rem; font-size:1.05rem; font-weight:700}
.audio-stack{display:grid; gap:12px}
.audio-grid{display:grid; grid-template-columns:repeat(2, minmax(0,1fr)); gap:12px; margin-top:10px}
.audio-card{
  border:1px solid var(--border); border-radius:14px; padding:12px; background:var(--card);
}
.audio-meta{display:flex; align-items:center; justify-content:space-between; gap:8px; margin-bottom:8px}
.badge{display:inline-flex; align-items:center; gap:.4rem; padding:.25rem .55rem; border:1px solid var(--border); border-radius:999px; font-size:.8rem; color:var(--muted)}
.badge .dot{width:.6rem; height:.6rem; border-radius:999px; background:var(--accent)}
.audio-title{font-weight:700}

.audio{width:100%}
.audio::-webkit-media-controls-panel{background:transparent}

.figure{margin:18px 0}
.figure img{width:100%; height:auto; display:block; border-radius:12px; border:1px solid var(--border); background:#fff}
.figure figcaption{color:var(--muted); font-size:.9rem; margin-top:.4rem}

.figures-grid{display:grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap:14px}

.mixed-audio{
  margin-top:12px;
  display:grid;
  grid-template-columns:repeat(auto-fit, minmax(240px, 1fr));
  gap:12px;
}
.mixed-audio .audio-card{padding:14px; height:100%}
.mix-formula{
  margin-top:14px;
  padding:12px 14px;
  border:1px solid var(--border);
  border-radius:12px;
  background:color-mix(in srgb, var(--card) 75%, transparent);
}
.mix-expression{margin:0; font-size:.95rem; line-height:1.55}
.mix-expression + .mix-expression{margin-top:.35rem}
.mix-coef{font-weight:700; font-variant-numeric:tabular-nums; color:var(--accent)}
.mix-card-formula{
  margin:0 0 .6rem;
  font-size:.9rem;
  line-height:1.5;
  color:var(--muted);
}
.mixed-figure{margin-top:16px}
.mixed-figure .figure{margin:0}

.table-wrap{
  margin-top:16px;
  border:1px solid var(--border);
  border-radius:14px;
  overflow:hidden;
  background:color-mix(in srgb, var(--card) 85%, transparent);
  box-shadow:0 10px 24px rgba(0,0,0,.12);
}
.table-scroll{
  overflow-x:auto;
}
.results-table{
  width:100%;
  border-collapse:collapse;
  min-width:640px;
  font-size:.95rem;
}
.results-table caption{
  text-align:left;
  padding:0.85rem 1.2rem;
  font-weight:600;
  letter-spacing:.01em;
  background:color-mix(in srgb, var(--accent) 22%, var(--card) 78%);
  color:var(--text);
}
.results-table th,
.results-table td{
  padding:0.75rem 1rem;
  border-bottom:1px solid var(--border);
  text-align:center;
  vertical-align:middle;
}
.results-table th:first-child,
.results-table td:first-child,
.results-table th[scope="row"],
.results-table th[scope="rowgroup"],
.results-table .results-label{
  text-align:left;
}
.results-table tbody tr:nth-child(odd){
  background:color-mix(in srgb, var(--card) 92%, transparent);
}
.results-table tbody tr:last-child th,
.results-table tbody tr:last-child td{
  border-bottom:none;
}
.metric-direction{
  display:inline-block;
  margin-left:.25rem;
  font-size:.85em;
  color:var(--muted);
}
.metric-best{
  font-weight:600;
  background:color-mix(in srgb, var(--accent) 18%, transparent);
  color:var(--text);
}
.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;
}

.help ul{margin:.4rem 0 0 1.2rem}
.help code{background:color-mix(in srgb, var(--card) 70%, transparent); padding:.05rem .35rem; border:1px solid var(--border); border-radius:.35rem}

.site-footer{padding:24px 0; color:var(--muted)}
.footer-inner{display:flex; align-items:center; justify-content:space-between}
.back-to-top{color:var(--muted); text-decoration:none; border:1px solid var(--border); padding:.25rem .6rem; border-radius:.6rem}
.back-to-top:hover{color:var(--text); border-color:var(--ring)}

@media (max-width: 720px){
  .audio-grid{grid-template-columns:1fr}
  .filters{grid-template-columns:1fr}
  .model-audio-columns{grid-template-columns:1fr}
  .model-audio{gap:10px}
  .figures-grid{grid-template-columns:1fr}
}