:root{
  --navy-900:#08152e;
  --navy:#0e1d3d;
  --navy-700:#162a55;
  --navy-50:#f3f5fb;
  --gold:#c9a961;
  --gold-soft:#e8d493;
  --gold-line:#a78a4a;
  --red:#c8202d;
  --red-700:#a01620;
  --ink:#0e1d3d;
  --muted:#5b6a85;
  --line:#e5e7eb;
  --bg:#f6f7fb;
  --card:#ffffff;
  --radius:10px;
  --shadow:0 1px 3px rgba(8,21,46,.06), 0 12px 30px rgba(8,21,46,.06);
}
*{box-sizing:border-box}
body{margin:0;font:15px/1.55 'Segoe UI',system-ui,-apple-system,Roboto,Helvetica,Arial,sans-serif;color:var(--ink);background:var(--bg)}
a{color:var(--navy);text-decoration:none}
a:hover{text-decoration:underline}
.aiboc-banner{background:linear-gradient(180deg, var(--navy-900) 0%, var(--navy) 100%);color:#fff;padding:0;border-bottom:3px solid var(--gold);position:relative;overflow:hidden}
.aiboc-banner::before,.aiboc-banner::after{content:"";position:absolute;left:0;right:0;height:6px;background:linear-gradient(90deg, var(--gold) 0%, var(--gold-soft) 50%, var(--gold) 100%)}
.aiboc-banner::before{top:0}
.aiboc-banner::after{bottom:0;height:3px}
.banner-inner{max-width:1180px;margin:0 auto;padding:22px 28px 28px;display:grid;grid-template-columns:1fr 1.6fr 1fr;gap:24px;align-items:center}
.banner-left{border-left:2px solid var(--gold);padding-left:18px}
.banner-left .org{font-size:36px;font-weight:800;letter-spacing:2px;color:#fff;line-height:1}
.banner-left .est{font-size:11px;letter-spacing:4px;color:var(--gold);margin:6px 0 8px;border-top:1px solid var(--gold-line);padding-top:6px;display:inline-block}
.banner-left .full{font-style:italic;font-size:13px;color:#dfe7f3;margin:0 0 10px;max-width:220px}
.banner-left .tag{border-top:1px solid var(--gold-line);padding-top:8px;font-size:11px;letter-spacing:3px;color:var(--gold)}
.banner-center{text-align:center;padding:8px 0}
.banner-center .pre{font-size:11px;letter-spacing:5px;color:var(--gold);margin-bottom:6px}
.banner-center .pre::before,.banner-center .pre::after{content:"—";color:var(--gold);margin:0 8px;letter-spacing:0}
.banner-center .title{font-size:46px;font-weight:800;letter-spacing:6px;color:#fff;line-height:1;margin:6px 0 10px}
.banner-center .rule{width:60%;height:1px;background:var(--gold-line);margin:6px auto 8px}
.banner-center .sub{font-style:italic;font-size:15px;color:#e7e1ce;margin:6px 0}
.banner-center .batch{font-size:12px;letter-spacing:5px;color:#dfe7f3;margin:6px 0}
.banner-center .diamond{display:inline-block;width:8px;height:8px;background:var(--red);transform:rotate(45deg);margin:8px auto}
.banner-center .tagline{font-size:11px;letter-spacing:3px;color:var(--gold);margin-top:6px}
.banner-right{text-align:right;border-right:2px solid var(--gold);padding-right:18px}
.banner-right .lbl{font-size:11px;letter-spacing:4px;color:var(--gold);border-bottom:1px solid var(--gold-line);padding-bottom:4px;display:inline-block;margin-bottom:6px}
.banner-right .dates{font-size:24px;font-weight:800;color:#fff;letter-spacing:1px;line-height:1.05}
.banner-right .year{font-size:24px;font-weight:800;color:var(--red);margin-top:2px}
.banner-right .venue{margin-top:14px;border-top:1px solid var(--gold-line);padding-top:8px;font-size:12px;color:#dfe7f3;font-style:italic}
.banner-right .venue strong{font-style:normal;display:block;font-size:14px;color:#fff;margin-bottom:2px}
.banner-right .ldp{margin-top:14px;font-size:11px;letter-spacing:4px;color:var(--gold)}
.topbar{display:flex;justify-content:space-between;align-items:center;padding:12px 24px;background:var(--navy);border-bottom:3px solid var(--gold);color:#fff}
.topbar .brand strong{font-size:16px;color:#fff;letter-spacing:2px;margin-right:10px}
.topbar .brand span{color:var(--gold-soft);font-size:12px;letter-spacing:1px}
.topbar nav a{margin-left:18px;color:#fff;font-weight:500;font-size:13px;letter-spacing:1px}
.topbar nav a:hover{color:var(--gold)}
.container{max-width:1180px;margin:0 auto;padding:24px 28px}
.footer{text-align:center;color:var(--muted);padding:22px;background:#fff;border-top:3px solid var(--gold);margin-top:24px;font-size:12px;letter-spacing:1px}
.footer strong{color:var(--navy)}
.intro{text-align:center;margin:18px auto 28px;max-width:760px}
.intro h2{font-size:20px;color:var(--navy);margin:0 0 6px;letter-spacing:.5px}
.intro p{color:var(--muted);margin:0}
.day-block{margin:26px 0}
.day-block h2{font-size:14px;letter-spacing:5px;color:var(--navy);border-left:4px solid var(--gold);padding:4px 0 4px 12px;margin:0 0 14px;text-transform:uppercase}
.day-block h2 small{color:var(--muted);font-weight:500;letter-spacing:2px;margin-left:8px}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:16px}
.session-card{display:block;background:var(--card);border:1px solid var(--line);border-top:3px solid var(--gold);border-radius:6px;padding:18px 18px 16px;box-shadow:var(--shadow);position:relative;color:var(--ink);transition:transform .12s ease, border-color .12s ease}
.session-card:hover{transform:translateY(-3px);text-decoration:none;border-color:var(--navy);border-top-color:var(--red)}
.session-card .ribbon{position:absolute;top:-12px;left:14px;background:var(--navy);color:var(--gold);font-size:10px;letter-spacing:3px;padding:4px 10px;border-radius:3px;font-weight:700}
.session-card h3{margin:8px 0 6px;font-size:15px;color:var(--navy);font-weight:700;line-height:1.35}
.session-card .faculty{color:var(--red-700);font-size:12px;font-weight:600;margin:4px 0}
.session-card .time{color:var(--muted);font-size:11px;letter-spacing:1px;margin:4px 0 12px;text-transform:uppercase}
.session-card .cta{color:var(--navy);font-weight:600;font-size:12px;letter-spacing:2px;text-transform:uppercase;border-top:1px solid var(--line);padding-top:8px;display:block}
.session-card:hover .cta{color:var(--red)}
.back{display:inline-block;margin-bottom:14px;color:var(--muted);font-size:12px;letter-spacing:2px;text-transform:uppercase}
.session-head{padding:22px;background:#fff;border:1px solid var(--line);border-top:4px solid var(--gold);border-radius:6px;margin-bottom:18px;box-shadow:var(--shadow)}
.session-head .meta{color:var(--muted);font-size:11px;letter-spacing:3px;margin:0 0 8px;text-transform:uppercase}
.session-head h1{margin:0;font-size:22px;color:var(--navy);font-weight:800;letter-spacing:.5px}
.session-head .faculty{color:var(--red-700);font-weight:700;margin:6px 0 4px;font-size:14px}
.session-head .desc{color:var(--muted);margin:6px 0 0;font-size:14px;line-height:1.55}
.feedback-form-wrap{max-width:780px;margin:0 auto}
.feedback-form{background:#fff;border:1px solid var(--line);border-radius:6px;padding:8px 22px 22px;box-shadow:var(--shadow)}
.feedback-form .q{border:0;border-top:1px solid var(--line);padding:16px 0 4px;margin:0}
.feedback-form .q:first-of-type{border-top:0}
.feedback-form legend{padding:0;font-weight:600;margin-bottom:10px;color:var(--navy);font-size:14px}
.feedback-form .qn{color:var(--gold-line);margin-right:8px;font-weight:700}
.feedback-form .opt{display:flex;align-items:center;gap:10px;padding:7px 0;cursor:pointer;font-size:14px;color:#26345e}
.feedback-form .opt input{accent-color:var(--navy);margin:0}
.feedback-form .opt:hover{color:var(--red)}
.feedback-form textarea{width:100%;padding:12px;border:1px solid var(--line);border-radius:6px;font:inherit;background:var(--navy-50)}
.feedback-form textarea:focus{outline:none;border-color:var(--gold);background:#fff}
.actions{margin-top:18px;text-align:right;border-top:1px solid var(--line);padding-top:14px}
.btn{display:inline-block;padding:9px 16px;border:1px solid var(--line);background:#fff;border-radius:4px;cursor:pointer;font:inherit;color:var(--navy);font-weight:600;font-size:13px;letter-spacing:1px;text-transform:uppercase}
.btn:hover{border-color:var(--navy);color:var(--navy);text-decoration:none}
.btn.primary{background:var(--navy);border-color:var(--navy);color:#fff;padding:11px 24px;letter-spacing:2px;border-bottom:3px solid var(--gold)}
.btn.primary:hover{background:var(--navy-900);color:#fff}
.btn.small{padding:5px 10px;font-size:11px;letter-spacing:1px;margin-right:4px;text-transform:uppercase}
.btn.danger{background:var(--red);border-color:var(--red);color:#fff;border-bottom:3px solid var(--red-700)}
.alert{padding:12px 16px;border-radius:6px;margin:12px 0;font-size:14px}
.alert.ok{background:#ecfdf5;color:#065f46;border:1px solid #a7f3d0;border-left:4px solid #10b981}
.alert.error{background:#fef2f2;color:#991b1b;border:1px solid #fecaca;border-left:4px solid var(--red)}
.alert.info{background:#eff6ff;color:#1e3a8a;border:1px solid #bfdbfe;border-left:4px solid var(--navy)}
.thanks{text-align:center;padding:50px 20px;max-width:600px;margin:0 auto}
.thanks .check{display:inline-block;width:72px;height:72px;border-radius:50%;background:var(--gold);color:var(--navy);font-size:34px;line-height:72px;margin-bottom:16px;font-weight:700;border:4px solid var(--navy)}
.thanks h1{color:var(--navy);font-size:26px;letter-spacing:1px}
.thanks p{color:var(--muted);font-size:15px}
.card{background:#fff;border:1px solid var(--line);border-top:3px solid var(--gold);border-radius:6px;padding:20px;box-shadow:var(--shadow);margin:14px 0}
.card h2{margin:0 0 12px;font-size:14px;color:var(--navy);letter-spacing:2px;text-transform:uppercase;border-bottom:1px solid var(--line);padding-bottom:8px}
.card label{display:block;margin:12px 0;font-weight:600;font-size:13px;color:var(--navy)}
.card input[type=text],.card input[type=password]{width:100%;padding:10px 12px;border:1px solid var(--line);border-radius:4px;font:inherit;margin-top:4px}
.card input:focus{outline:none;border-color:var(--gold)}
.kpi-row{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:12px;margin:18px 0}
.kpi{background:#fff;border:1px solid var(--line);border-left:4px solid var(--gold);border-radius:4px;padding:14px 16px;box-shadow:var(--shadow);display:flex;flex-direction:column;gap:4px}
.kpi .big{font-size:26px;font-weight:800;color:var(--navy);letter-spacing:1px}
.kpi span:last-child{color:var(--muted);font-size:11px;letter-spacing:2px;text-transform:uppercase}
table.data{width:100%;border-collapse:collapse;background:#fff;border:1px solid var(--line);border-radius:6px;overflow:hidden;box-shadow:var(--shadow);margin:8px 0}
table.data th,table.data td{padding:10px 12px;text-align:left;border-bottom:1px solid var(--line);font-size:13px}
table.data th{background:var(--navy);font-weight:700;color:#fff;font-size:11px;letter-spacing:2px;text-transform:uppercase}
table.data tr:hover td{background:var(--navy-50)}
table.data td.num,table.data th.num{text-align:right;font-variant-numeric:tabular-nums}
table.data.small th,table.data.small td{padding:6px 8px;font-size:11px}
.muted{color:var(--muted)}
.small{font-size:12px}
.pill{padding:3px 10px;border-radius:99px;font-size:10px;font-weight:700;letter-spacing:1px;text-transform:uppercase}
.pill.ok{background:#dcfce7;color:#15803d}
.pill.off{background:#fee2e2;color:#991b1b}
.charts-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(340px,1fr));gap:14px}
.chart-wrap{background:#fff;border:1px solid var(--line);border-top:3px solid var(--gold);border-radius:4px;padding:14px;box-shadow:var(--shadow)}
.chart-wrap h3{margin:0 0 8px;font-size:12px;color:var(--navy);font-weight:700;letter-spacing:1px;text-transform:uppercase}
.comments{margin:0;padding-left:0;list-style:none}
.comments li{margin:8px 0;padding:10px 14px;background:var(--navy-50);border-left:3px solid var(--gold);border-radius:0 4px 4px 0;color:var(--navy);font-size:14px}
.login-card{max-width:380px;margin:60px auto}
.login-card h1{margin:0 0 16px;color:var(--navy);font-size:22px;letter-spacing:2px;text-transform:uppercase;border-bottom:3px solid var(--gold);padding-bottom:8px;display:inline-block}
@media (max-width:880px){.banner-inner{grid-template-columns:1fr;text-align:center}.banner-left,.banner-right{border:0;padding:0;text-align:center}.banner-left{border-bottom:1px solid var(--gold-line);padding-bottom:14px;margin-bottom:8px}.banner-right{border-top:1px solid var(--gold-line);padding-top:14px;margin-top:8px}.banner-left .full{margin:6px auto 10px}.banner-center .title{font-size:32px;letter-spacing:3px}}
@media (max-width:560px){.topbar{flex-direction:column;align-items:flex-start;gap:6px;padding:10px 16px}.topbar nav{width:100%}.topbar nav a{margin:0 14px 0 0;font-size:12px}.container{padding:18px}.banner-center .title{font-size:26px;letter-spacing:2px}.session-head h1{font-size:18px}}
.feedback-form .name-input{width:100%;padding:12px;border:1px solid var(--line);border-radius:6px;font:inherit;background:var(--navy-50)}
.feedback-form .name-q legend{color:var(--navy);font-weight:700}
.feedback-form .name-q .qn{color:var(--gold)}
.feedback-form .req{color:var(--red);font-weight:700;margin-left:4px}
.feedback-form .name-input:focus{outline:none;border-color:var(--gold);background:#fff}