:root{
  --bg:#0f0f12;
  --panel:#15161a;
  --text:#e8e8ea;
  --muted:#b7b7bf;
  --accent:#1db954; /* green-ish accent */
  --accent-2:#2eaadc;
  --maxw: 980px;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{font-family:Inter,system-ui,Segoe UI,Roboto,Helvetica,Arial,sans-serif;background:var(--bg);color:var(--text);}

.container{max-width:var(--maxw);margin:0 auto;padding:0 20px}
.container.narrow{max-width:820px}

.site-header{background:linear-gradient(180deg, #131419 0%, #101115 100%);border-bottom:1px solid #222;}
.site-header .title{margin:16px 0 8px;font-size:44px;letter-spacing:-0.02em;text-align:center}
.site-header .subtitle{margin:0 0 18px;color:var(--muted);text-align:center}
.site-header .authors{display:flex;gap:10px;justify-content:center;color:#d8d8df;margin:6px 0 6px}
.site-header .affiliation{text-align:center;color:#c6c6ce;margin-bottom:18px}
.site-header .conf-badge{display:inline-block;margin:18px auto 6px;padding:6px 10px;border:1px solid #2a2a31;border-radius:999px;background:#121219;color:#dcdce2;font-weight:600}
.site-header .cta{display:flex;gap:12px;justify-content:center;padding:10px 0 28px}

.btn{display:inline-block;padding:12px 20px;border-radius:10px;border:1px solid #2a2a31;color:var(--text);text-decoration:none;background:var(--panel);transition: all 0.2s ease;font-weight:500}
.btn:hover{border-color:#3a3a45;transform:translateY(-1px)}
.btn.primary{background:linear-gradient(135deg, #2563eb 0%, #1d4ed8 100%);border-color:transparent;color:#ffffff;font-weight:700;box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3)}
.btn.primary:hover{filter:brightness(1.1);box-shadow: 0 6px 16px rgba(37, 99, 235, 0.4)}
/* Secondary button for poster */
.btn.secondary{background:linear-gradient(135deg, #059669 0%, #047857 100%);border-color:transparent;color:#ffffff;font-weight:600;box-shadow: 0 4px 12px rgba(5, 150, 105, 0.3)}
.btn.secondary:hover{filter:brightness(1.1);box-shadow: 0 6px 16px rgba(5, 150, 105, 0.4)}
/* Icon inside buttons */
.btn .icon{display:inline-block;vertical-align:-3px;margin-right:8px;fill:white}

.section{padding:40px 0;border-top:1px solid #1e1f25;border-bottom:1px solid #0e0f12;background:#0f0f12}
.section.alt{background:#0e1014}
.section h2{font-size:26px;margin:0 0 14px}
.section p{color:#d7d7de;line-height:1.7}

ul.bullets{margin:10px 0 0 18px;color:#d7d7de;line-height:1.7}
ul.bullets li{margin:6px 0}

ul.files{margin:8px 0 0 18px;color:#d7d7de;line-height:1.7}
ul.files li{margin:6px 0}
code{background:#17181f;border:1px solid #252634;border-radius:6px;padding:2px 6px;color:#f1f1f6}

.site-footer{padding:22px 0;background:#0d0e12;border-top:1px solid #1b1c22;color:#bdbdc6}
.site-footer .container{display:flex;gap:10px;align-items:center;justify-content:center;flex-wrap:wrap}
.site-footer a{color:#a7d4ff;text-decoration:none}
.site-footer .sep{opacity:.5}