/* Shell-LCC project page */
:root{
  --bg:#0b0d12;
  --panel:#11141b;
  --ink:#1a1c22;
  --text:#e8eaf0;
  --muted:#9aa3b2;
  --line:#262b36;
  --accent:#6c8cff;
  --accent2:#48e0c0;
  --maxw:1080px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,"Noto Sans",sans-serif;
  background:#fafbfc;
  color:#1a1c22;
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
}
a{color:#3a5bd9;text-decoration:none}
a:hover{color:#1f3bb8;text-decoration:underline}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}

/* ---------- hero ---------- */
.hero{
  background:radial-gradient(1200px 600px at 50% -10%,#1c2336 0%,var(--bg) 60%);
  color:var(--text);
  padding:64px 0 52px;
  border-bottom:1px solid var(--line);
}
.hero .wrap{text-align:center}
.venue{
  display:inline-block;letter-spacing:.16em;text-transform:uppercase;
  font-size:12.5px;color:var(--accent2);font-weight:600;margin-bottom:18px;
}
h1.title{
  font-size:38px;line-height:1.22;font-weight:760;margin:0 0 6px;
  letter-spacing:-.01em;
}
h1.title .sub{display:block;font-size:25px;font-weight:600;color:var(--muted);margin-top:10px}
.authors{margin:22px 0 4px;font-size:18px;color:#dfe4ee}
.authors a{color:#fff}
.authors sup{color:var(--accent2);font-weight:700}
.affil{color:var(--muted);font-size:15px;margin-top:6px}
.affil sup{color:var(--accent2);font-weight:700}

.btns{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;margin-top:28px}
.btn{
  display:inline-flex;align-items:center;gap:8px;
  background:#1b2030;border:1px solid #2c3447;color:#eef1f8;
  padding:11px 20px;border-radius:30px;font-weight:600;font-size:15px;
  transition:.18s;
}
.btn:hover{background:#262d42;border-color:var(--accent);color:#fff;text-decoration:none;transform:translateY(-1px)}
.btn svg{width:17px;height:17px;fill:currentColor}
.btn.primary{background:linear-gradient(120deg,var(--accent),#7a6cff);border-color:transparent}
.btn.primary:hover{filter:brightness(1.08)}

/* ---------- sections ---------- */
section{padding:54px 0}
section:nth-child(even){background:#fff}
h2{
  font-size:27px;font-weight:720;text-align:center;margin:0 0 8px;letter-spacing:-.01em;
}
.lead{text-align:center;color:#5b6472;max-width:720px;margin:0 auto 30px;font-size:16px}
p.body{font-size:16.5px;color:#2b2f38;max-width:820px;margin:0 auto}
.tag{color:var(--accent);font-weight:700}

/* ---------- teaser / figures ---------- */
figure{margin:26px auto 0;max-width:980px;text-align:center}
figure img{width:100%;border-radius:12px;border:1px solid #e6e8ee;box-shadow:0 8px 30px rgba(20,30,60,.08)}
figcaption{color:#6a7280;font-size:14px;margin-top:12px;text-align:left;max-width:900px;margin-left:auto;margin-right:auto}
figcaption b{color:#2b2f38}

/* ---------- video grid ---------- */
.prompt-block{max-width:960px;margin:0 auto 30px;background:#fff;border:1px solid #e9ebf1;border-radius:14px;padding:18px 18px 20px;box-shadow:0 6px 24px rgba(20,30,60,.05)}
.prompt-txt{font-size:14.5px;color:#454b57;margin:0 0 14px;padding-left:14px;border-left:3px solid var(--accent)}
.vpair{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.vcol{position:relative}
.vcol video{width:100%;border-radius:9px;background:#000;display:block;border:1px solid #e6e8ee}
.vlabel{
  position:absolute;top:9px;left:9px;font-size:12px;font-weight:700;
  padding:4px 10px;border-radius:20px;color:#fff;backdrop-filter:blur(4px);
}
.vlabel.base{background:rgba(40,46,60,.72)}
.vlabel.ours{background:rgba(74,224,192,.92);color:#08251f}

/* ---------- table ---------- */
.tablewrap{max-width:920px;margin:26px auto 0;overflow-x:auto}
table{width:100%;border-collapse:collapse;font-size:14.5px;background:#fff;border-radius:10px;overflow:hidden}
th,td{padding:11px 12px;text-align:center;border-bottom:1px solid #eceef3}
th{background:#f4f6fa;font-weight:700;color:#333}
td:first-child,th:first-child{text-align:left}
tr.ours{background:#f0fbf8;font-weight:600}
tr.ours td:first-child{color:#0e9e85}
.up{color:#1aa179;font-weight:700}

/* ---------- bibtex ---------- */
.bibtex{max-width:880px;margin:0 auto;position:relative}
pre{
  background:#0d1017;color:#cdd6e6;border-radius:12px;padding:22px 20px;
  overflow-x:auto;font-size:13.5px;line-height:1.6;border:1px solid #1f2433;
  font-family:"SFMono-Regular",Consolas,"Liberation Mono",Menlo,monospace;
}
.copybtn{position:absolute;top:12px;right:12px;background:#1d2333;color:#cdd6e6;border:1px solid #2c3447;border-radius:7px;padding:6px 12px;font-size:13px;cursor:pointer;transition:.15s}
.copybtn:hover{background:#2a3147;color:#fff}

/* ---------- footer ---------- */
footer{background:var(--bg);color:var(--muted);text-align:center;padding:34px 0;font-size:14px;border-top:1px solid var(--line)}
footer a{color:#aeb8ca}

@media(max-width:720px){
  h1.title{font-size:28px}
  h1.title .sub{font-size:19px}
  .vpair{grid-template-columns:1fr}
  section{padding:40px 0}
}