:root{
  --bg:#ffffff;
  --tint:#f5f8f9;
  --ink:#16232b;
  --muted:#5c6b73;
  --line:#e2e8ea;
  --teal:#0e7c86;
  --teal-d:#0a5c64;
  --teal-l:#d7edef;
  --orig:#3f7fb0;      /* blue = original */
  --less:#8bab54;      /* green = less-bias */
  --red:#d6453b;
  --green:#2e9e5b;
  --radius:16px;
  --shadow:0 6px 24px rgba(16,60,70,.08);
  --shadow-lg:0 16px 48px rgba(16,60,70,.14);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;background:var(--bg);color:var(--ink);
  font-family:'Inter',system-ui,-apple-system,sans-serif;
  font-size:17px;line-height:1.65;-webkit-font-smoothing:antialiased;
}
.container{max-width:1080px;margin:0 auto;padding:0 24px}
.narrow{max-width:760px}
h1,h2,h3{font-family:'Newsreader',Georgia,serif;font-weight:600;line-height:1.15;letter-spacing:-.01em}
h2{font-size:2.1rem;margin:0 0 .4em}
h3{font-size:1.35rem;margin:2em 0 .6em}
a{color:var(--teal);text-decoration:none}
em{font-style:italic}
sup{font-size:.62em}

/* NAV */
#nav{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.82);
  backdrop-filter:blur(12px);border-bottom:1px solid var(--line);transition:box-shadow .3s}
#nav.scrolled{box-shadow:0 2px 16px rgba(16,60,70,.07)}
.nav-inner{max-width:1080px;margin:0 auto;padding:12px 24px;display:flex;align-items:center;justify-content:space-between}
.nav-logo{font-family:'Newsreader',serif;font-weight:700;font-size:1.3rem;color:var(--ink)}
.nav-logo span{color:var(--teal)}
.nav-links{display:flex;gap:22px;flex-wrap:wrap}
.nav-links a{color:var(--muted);font-size:.92rem;font-weight:500;position:relative}
.nav-links a:hover{color:var(--teal)}
.nav-links a::after{content:"";position:absolute;left:0;bottom:-4px;width:0;height:2px;background:var(--teal);transition:width .25s}
.nav-links a:hover::after{width:100%}
@media(max-width:720px){.nav-links{display:none}}

/* HERO */
.hero{position:relative;overflow:hidden;padding:96px 0 84px;text-align:center}
.hero-bg{position:absolute;inset:0;z-index:0;
  background:
    radial-gradient(60% 55% at 18% 8%, rgba(14,124,134,.14), transparent 60%),
    radial-gradient(55% 50% at 88% 15%, rgba(139,171,84,.16), transparent 62%),
    radial-gradient(70% 60% at 50% 100%, rgba(63,127,176,.10), transparent 60%);
  animation:drift 18s ease-in-out infinite alternate}
@keyframes drift{from{transform:translate3d(0,0,0) scale(1)}to{transform:translate3d(0,-14px,0) scale(1.05)}}
.hero-content{position:relative;z-index:1}
.venue{text-transform:uppercase;letter-spacing:.14em;font-size:.8rem;font-weight:600;color:var(--teal);margin:0 0 18px}
.title{font-size:clamp(2.1rem,5vw,3.5rem);font-weight:700;margin:0 0 22px}
.grad{background:linear-gradient(90deg,var(--teal),var(--less));-webkit-background-clip:text;background-clip:text;color:transparent}
.subtitle{max-width:720px;margin:0 auto 34px;color:var(--muted);font-size:1.12rem}
.authors{display:flex;flex-wrap:wrap;justify-content:center;gap:6px 20px;font-weight:500;margin-bottom:8px}
.affil{color:var(--muted);font-size:.92rem;display:flex;flex-wrap:wrap;justify-content:center;gap:6px 18px}
.affil.small{font-size:.82rem;margin-top:4px}
.buttons{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;margin-top:30px}
.btn{display:inline-flex;align-items:center;gap:8px;padding:11px 22px;border-radius:999px;
  background:#fff;border:1px solid var(--line);color:var(--ink);font-weight:600;font-size:.95rem;
  box-shadow:var(--shadow);transition:transform .18s,box-shadow .18s,background .18s}
.btn:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg)}
.btn.primary{background:var(--teal);color:#fff;border-color:var(--teal)}
.btn.primary:hover{background:var(--teal-d)}
.btn.disabled{background:var(--tint);color:var(--muted);cursor:default;box-shadow:none;border-style:dashed}
.btn.disabled:hover{transform:none;box-shadow:none}
.btn .soon{font-style:normal;font-size:.72rem;font-weight:600;text-transform:uppercase;letter-spacing:.04em;
  color:var(--teal);background:var(--teal-l);padding:2px 8px;border-radius:999px;margin-left:2px}
.scroll-hint{position:relative;z-index:1;text-align:center;margin-top:44px;color:var(--teal);font-size:1.4rem;animation:bob 1.8s ease-in-out infinite}
@keyframes bob{0%,100%{transform:translateY(0)}50%{transform:translateY(8px)}}

/* SECTIONS */
.section{padding:76px 0}
.section.tint{background:var(--tint)}
.lead{color:var(--muted);font-size:1.08rem;max-width:800px;margin:0 0 30px}
.note{color:var(--muted);font-size:.88rem;margin-top:14px}
.th-sub{font-family:'Inter',sans-serif;font-size:.7em;font-weight:500;color:var(--muted)}

/* STAT CARDS */
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
@media(max-width:820px){.stat-grid{grid-template-columns:repeat(2,1fr)}}
.stat{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px 20px;text-align:center;box-shadow:var(--shadow);transition:transform .2s}
.stat:hover{transform:translateY(-4px)}
.stat .num{font-family:'Newsreader',serif;font-size:2.6rem;font-weight:700;color:var(--teal);line-height:1}
.stat .lbl{margin-top:10px;font-size:.92rem;color:var(--muted)}
.stat .lbl small{color:#93a1a7}

/* FIGURES */
.figure{margin:26px 0 0;text-align:center}
.figure img{max-width:100%;border-radius:12px;border:1px solid var(--line);box-shadow:var(--shadow);background:#fff}
.figure figcaption{margin-top:12px;color:var(--muted);font-size:.9rem;max-width:820px;margin-left:auto;margin-right:auto}
.collapsible img{max-width:100%}

/* EXPLORER */
.explorer{display:grid;grid-template-columns:1fr 1fr;gap:32px;align-items:start;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px;box-shadow:var(--shadow)}
@media(max-width:840px){.explorer{grid-template-columns:1fr}}
.exp-frame-wrap{position:relative;border-radius:12px;overflow:hidden;border:1px solid var(--line)}
.exp-frame-wrap img{display:block;width:100%;height:auto}
.answer-badge{position:absolute;left:12px;bottom:12px;background:rgba(14,124,134,.92);color:#fff;
  padding:6px 14px;border-radius:999px;font-weight:600;font-size:.9rem;backdrop-filter:blur(4px)}
.exp-thumbs{display:flex;gap:8px;margin-top:12px;flex-wrap:wrap}
.exp-thumbs img{width:64px;height:48px;object-fit:cover;border-radius:8px;border:2px solid transparent;cursor:pointer;opacity:.6;transition:.18s}
.exp-thumbs img:hover{opacity:1}
.exp-thumbs img.active{border-color:var(--teal);opacity:1}
.control-row{margin-bottom:16px}
.control-row>label{display:block;font-size:.78rem;text-transform:uppercase;letter-spacing:.08em;color:var(--muted);margin-bottom:8px;font-weight:600}
.chips{display:flex;gap:8px;flex-wrap:wrap}
.chip{padding:7px 15px;border-radius:999px;border:1px solid var(--line);background:#fff;color:var(--ink);
  font-size:.9rem;font-weight:500;cursor:pointer;transition:.16s}
.chip:hover{border-color:var(--teal);color:var(--teal)}
.chip.active{background:var(--teal);color:#fff;border-color:var(--teal)}
.qcard{border-radius:12px;padding:14px 16px;margin:0}
.qcard.orig{background:#eef4f9;border:1px solid #d5e4f0}
.qcard.less{background:#f0f4e8;border:1px solid #dde8c9}
.qcard p{margin:6px 0 0;font-size:1.02rem}
.qtag{font-size:.74rem;text-transform:uppercase;letter-spacing:.06em;font-weight:700;color:var(--muted)}
.qtag .hint{text-transform:none;letter-spacing:0;font-weight:500;color:#9aa7ad;margin-left:6px}
.arrow-down{text-align:center;color:var(--muted);font-size:.86rem;margin:10px 0}
.answer-line{margin-top:16px;font-size:.98rem;color:var(--muted)}
.answer-line strong{color:var(--teal);font-size:1.05rem}
.hl{background:#ffe08a;border-radius:4px;padding:0 3px;font-weight:600}
.hl-less{background:#c7e59a;border-radius:4px;padding:0 3px;font-weight:600}

/* CASE VIEWERS (failure + text-only) */
.case-viewer{display:grid;grid-template-columns:1fr 1fr;gap:32px;align-items:start;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px;box-shadow:var(--shadow)}
.case-viewer.txt{margin-top:6px}
@media(max-width:840px){.case-viewer{grid-template-columns:1fr}}
.case-img-wrap{position:relative;border-radius:12px;overflow:hidden;border:1px solid var(--line)}
.case-img-wrap img{display:block;width:100%;height:auto;transition:filter .3s}
.case-img-wrap img.dimmed{filter:grayscale(.7) brightness(.7) blur(1px)}
.case-cat{position:absolute;left:12px;top:12px;background:rgba(14,124,134,.92);color:#fff;
  padding:5px 12px;border-radius:999px;font-weight:600;font-size:.85rem;backdrop-filter:blur(4px)}
.case-nav{display:flex;align-items:center;gap:14px;justify-content:flex-end;margin-bottom:12px;color:var(--muted);font-size:.9rem;font-weight:600}
.navbtn{width:34px;height:34px;border-radius:50%;border:1px solid var(--line);background:#fff;color:var(--teal);
  font-size:1.2rem;line-height:1;cursor:pointer;transition:.16s}
.navbtn:hover{background:var(--teal);color:#fff;border-color:var(--teal)}
.qcard.neutral{background:var(--tint);border:1px solid var(--line)}
.predrow{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:10px 14px;
  border:1px solid var(--line);border-radius:10px;margin-top:10px;background:#fff}
.predrow.inline{border:none;background:transparent;padding:8px 2px 0;margin-top:6px}
.predrow .cond{font-size:.85rem;color:var(--muted);font-weight:500}
.predrow .cond em{color:#9aa7ad}
.pred{font-weight:700;font-size:1.02rem}
.pred.ok{color:var(--green)}
.pred.bad{color:var(--red)}

/* CUE TABS */
.cue-tabs{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:22px}
.cue-tab{flex:1;min-width:150px;padding:14px 16px;border-radius:12px;border:1px solid var(--line);background:#fff;cursor:pointer;transition:.18s;text-align:left}
.cue-tab:hover{border-color:var(--teal)}
.cue-tab.active{border-color:var(--teal);background:var(--teal-l);box-shadow:var(--shadow)}
.cue-tab b{display:block;font-size:1.02rem}
.cue-tab span{font-size:.82rem;color:var(--muted)}
.cue-panel{display:grid;grid-template-columns:340px 1fr;gap:28px;align-items:start;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow)}
@media(max-width:760px){.cue-panel{grid-template-columns:1fr}}
.cue-img-wrap{border-radius:12px;overflow:hidden;border:1px solid var(--line)}
.cue-img-wrap img{display:block;width:100%}
.cue-info h3{margin:0 0 .4em}
.cue-explicit{margin:14px 0;font-size:.88rem;color:var(--muted);display:flex;align-items:center;gap:10px}
.cue-explicit .dots{letter-spacing:3px;color:var(--teal);font-size:1.1rem}

/* TABLES */
.table-wrap{overflow-x:auto;border-radius:var(--radius);border:1px solid var(--line);box-shadow:var(--shadow);background:#fff}
.data-table{width:100%;border-collapse:collapse;font-size:.96rem}
.data-table th,.data-table td{padding:13px 16px;text-align:right;white-space:nowrap}
.data-table th:first-child,.data-table td:first-child{text-align:left;font-weight:600}
.data-table thead th{background:var(--tint);color:var(--muted);font-weight:600;font-size:.82rem;
  text-transform:uppercase;letter-spacing:.04em;cursor:pointer;user-select:none;border-bottom:2px solid var(--line);transition:color .15s}
.data-table thead tr:not(.grp) th:hover{color:var(--teal)}
.data-table thead tr.grp th{text-align:center;cursor:default;border-bottom:1px solid var(--line);
  color:var(--ink);padding-bottom:8px}
.data-table thead tr.grp th:empty{background:var(--tint);border-bottom:none}
.data-table thead tr.grp th:not(:empty){border-bottom:2px solid var(--teal-l)}
.data-table thead tr.grp th:hover{color:var(--ink)}
.data-table thead th.sort-asc::after{content:" ▲";font-size:.7em}
.data-table thead th.sort-desc::after{content:" ▼";font-size:.7em}
.data-table tbody tr{border-bottom:1px solid var(--line);transition:background .15s}
.data-table tbody tr:last-child{border-bottom:none}
.data-table tbody tr:hover{background:var(--teal-l)}
.cell{position:relative;display:inline-block;min-width:52px}
.delta{font-size:.8em;margin-left:5px;font-weight:600}
.delta.down{color:var(--red)}
.delta.up{color:var(--green)}

/* CHARTS */
.chart-block{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px;box-shadow:var(--shadow);margin-bottom:28px}
.chart-block h3{margin-top:0}
.chart-controls{display:flex;gap:8px;flex-wrap:wrap;margin:6px 0 18px}
.radar-holder{max-width:480px;margin:0 auto;position:relative}
.bar-holder{position:relative;height:360px}

/* TAKEAWAYS */
.takeaways{list-style:none;padding:0;margin:18px 0;display:grid;gap:14px}
.takeaways li{background:#fff;border:1px solid var(--line);border-left:4px solid var(--teal);
  border-radius:12px;padding:16px 20px;box-shadow:var(--shadow)}
.takeaways li strong{color:var(--teal-d)}

/* BIBTEX */
.bibtex-wrap{position:relative}
.bibtex-wrap pre{background:#0f2126;color:#d7ecef;border-radius:12px;padding:22px;overflow-x:auto;font-size:.86rem;line-height:1.6}
.copy-btn{position:absolute;top:12px;right:12px;background:var(--teal);color:#fff;border:none;border-radius:8px;padding:7px 14px;font-weight:600;cursor:pointer;font-size:.82rem;transition:.16s}
.copy-btn:hover{background:var(--teal-d)}
.copy-btn.done{background:var(--green)}

/* FOOTER */
.footer{padding:40px 0;border-top:1px solid var(--line);color:var(--muted);font-size:.9rem;text-align:center}
.footer-logos{margin-bottom:28px}
.footer-logos img{width:100%;max-width:920px;height:auto;opacity:.92}
.footer .small{font-size:.8rem;color:#9aa7ad;margin-top:8px}

/* REVEAL ANIMATION */
.reveal{opacity:0;transform:translateY(22px);transition:opacity .7s cubic-bezier(.2,.7,.2,1),transform .7s cubic-bezier(.2,.7,.2,1)}
.reveal.in{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none;transition:none}.hero-bg,.scroll-hint{animation:none}}