:root{--brand:#0b5ea8;--accent:#f2a900;--ink:#1d2733;--muted:#6b7785;--line:#e3e8ee;--bg:#f5f7fa;--card:#fff;--ok:#1f8a4c;--err:#c0392b;--warn:#b7791f;--r:10px;font-family:system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif}
*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font-size:15px;line-height:1.5}
a{color:var(--brand);text-decoration:none}a:hover{text-decoration:underline}
h1{font-size:1.6rem;margin:.2em 0 .6em}h2{font-size:1.2rem;margin:1.2em 0 .5em}h3{font-size:1.05rem;margin:.8em 0 .4em}
img{max-width:100%}
.container{max-width:1100px;margin:0 auto;padding:20px}
.narrow{max-width:640px;margin:0 auto;padding:20px}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:18px;margin-bottom:16px}
.grid{display:grid;gap:16px}.g2{grid-template-columns:repeat(auto-fit,minmax(280px,1fr))}.g3{grid-template-columns:repeat(auto-fit,minmax(220px,1fr))}.g4{grid-template-columns:repeat(auto-fit,minmax(170px,1fr))}
.row{display:flex;gap:10px;align-items:center;flex-wrap:wrap}.between{justify-content:space-between}.grow{flex:1}
.muted{color:var(--muted)}.small{font-size:.85rem}.right{text-align:right}.center{text-align:center}.mt{margin-top:16px}.mb0{margin-bottom:0}
.btn{display:inline-flex;align-items:center;gap:6px;background:var(--brand);color:#fff;border:0;border-radius:8px;padding:9px 16px;font-size:.95rem;cursor:pointer;text-decoration:none;font-weight:600;line-height:1.2}
.btn:hover{filter:brightness(1.08);text-decoration:none}.btn.sec{background:#e9eef5;color:var(--ink)}.btn.danger{background:var(--err)}.btn.ok{background:var(--ok)}.btn.sm{padding:5px 10px;font-size:.82rem}.btn.lg{padding:14px 24px;font-size:1.1rem}.btn.block{display:flex;width:100%;justify-content:center}
.linkbtn{background:none;border:0;color:var(--brand);cursor:pointer;padding:0;font:inherit}
form.inline{display:inline}
label{display:block;font-weight:600;font-size:.9rem;margin:10px 0 4px}
input:not([type]),input[type=text],input[type=email],input[type=password],input[type=number],input[type=datetime-local],input[type=date],input[type=url],input[type=search],input[type=tel],select,textarea{width:100%;padding:9px 11px;border:1px solid #cfd7e0;border-radius:8px;font:inherit;background:#fff}
textarea{min-height:90px}input[type=color]{width:60px;height:36px;border:1px solid #cfd7e0;border-radius:6px}
.check{display:flex;gap:8px;align-items:flex-start;font-weight:400;margin:6px 0}.check input{margin-top:4px}
.help{font-size:.8rem;color:var(--muted);margin-top:3px}
table.t{width:100%;border-collapse:collapse;background:#fff}table.t th,table.t td{padding:8px 10px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top;font-size:.9rem}table.t th{background:#f0f3f7;font-size:.8rem;text-transform:uppercase;letter-spacing:.03em;color:#4a5562}
.tablewrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--r)}
.badge{display:inline-block;padding:2px 8px;border-radius:20px;font-size:.75rem;font-weight:600;background:#e9eef5;color:#33414f}
.badge.ok{background:#dff3e7;color:var(--ok)}.badge.err{background:#fbe3e0;color:var(--err)}.badge.warn{background:#fdf1d8;color:var(--warn)}.badge.brand{background:var(--brand);color:#fff}
.flash{padding:10px 14px;border-radius:8px;margin-bottom:12px}.flash.ok{background:#dff3e7;color:#145c33}.flash.err{background:#fbe3e0;color:#7d2219}
.stat{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:14px}.stat .n{font-size:1.7rem;font-weight:700;color:var(--brand)}.stat .l{font-size:.78rem;color:var(--muted);text-transform:uppercase;letter-spacing:.04em}
.thumb{height:36px;border-radius:4px}.swatch{display:inline-block;width:14px;height:14px;border-radius:3px;vertical-align:middle;margin-right:4px}
.avatar{width:42px;height:42px;border-radius:50%;object-fit:cover;background:#dbe3ec;display:inline-flex;align-items:center;justify-content:center;font-weight:700;color:#4a5562;flex:none}
.avatar.lg{width:88px;height:88px;font-size:1.6rem}
.bar{height:10px;background:#e9eef5;border-radius:5px;overflow:hidden}.bar>i{display:block;height:100%;background:var(--brand)}
.tabs{display:flex;gap:4px;border-bottom:1px solid var(--line);margin-bottom:14px;overflow-x:auto}.tabs a{padding:8px 14px;border-bottom:3px solid transparent;color:var(--muted);white-space:nowrap}.tabs a.on{border-color:var(--brand);color:var(--ink);font-weight:600}
/* admin chrome */
.admin{display:flex;min-height:100vh}.side{width:240px;background:#13202e;color:#c9d3de;flex:none;padding:14px 0;position:sticky;top:0;height:100vh;overflow-y:auto}
.side a{display:block;color:#c9d3de;padding:6px 18px;font-size:.9rem}.side a:hover,.side a.on{background:#1e3044;color:#fff;text-decoration:none}
.side .h{font-size:.7rem;text-transform:uppercase;letter-spacing:.08em;color:#7f8fa1;padding:14px 18px 4px}.side .brand{color:#fff;font-weight:700;padding:4px 18px 10px;font-size:1rem}
.main{flex:1;min-width:0}.topbar{background:#fff;border-bottom:1px solid var(--line);padding:10px 20px;display:flex;justify-content:space-between;align-items:center;gap:10px}
.menu-toggle{display:none}
@media(max-width:860px){.side{position:fixed;left:-260px;z-index:20;transition:left .2s}.side.open{left:0}.menu-toggle{display:inline-flex}}
/* attendee app */
.app{max-width:760px;margin:0 auto;padding:0 0 80px}.apphead{background:var(--brand);color:#fff;padding:14px 16px;display:flex;justify-content:space-between;align-items:center;position:sticky;top:0;z-index:5}
.apphead a{color:#fff}.apphead .t{font-weight:700;font-size:1.05rem;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.appbody{padding:14px}
.bnav{position:fixed;bottom:0;left:0;right:0;background:#fff;border-top:1px solid var(--line);display:flex;justify-content:space-around;padding:6px 0 calc(6px + env(safe-area-inset-bottom));z-index:10}
.bnav a{display:flex;flex-direction:column;align-items:center;font-size:.7rem;color:var(--muted);gap:2px;min-width:56px}.bnav a.on{color:var(--brand)}.bnav svg{width:22px;height:22px}
.tiles{display:grid;grid-template-columns:repeat(4,1fr);gap:10px}.tile{background:#fff;border:1px solid var(--line);border-radius:12px;padding:12px 4px;text-align:center;font-size:.78rem;color:var(--ink)}.tile .i{font-size:1.5rem;display:block}
@media(max-width:420px){.tiles{grid-template-columns:repeat(3,1fr)}}
.sess{display:flex;gap:10px;background:#fff;border:1px solid var(--line);border-left:4px solid var(--c,var(--brand));border-radius:10px;padding:10px 12px;margin-bottom:8px}
.sess .time{width:70px;flex:none;font-size:.8rem;color:var(--muted)}.sess .ttl{font-weight:600}
.star{background:none;border:0;font-size:1.3rem;cursor:pointer;color:#c8d0da}.star.on{color:var(--accent)}
.list-item{display:flex;gap:12px;align-items:center;background:#fff;border:1px solid var(--line);border-radius:10px;padding:10px 12px;margin-bottom:8px;color:var(--ink)}
.list-item:hover{text-decoration:none;border-color:#c2ccd8}
.pill{display:inline-block;background:#eef2f7;border-radius:14px;padding:2px 9px;font-size:.75rem;margin:2px}
.toast{position:fixed;top:12px;left:50%;transform:translateX(-50%);background:#13202e;color:#fff;padding:12px 18px;border-radius:10px;z-index:100;max-width:90%;box-shadow:0 8px 24px rgba(0,0,0,.2)}
.msg{max-width:78%;padding:8px 12px;border-radius:14px;margin:4px 0;background:#fff;border:1px solid var(--line)}.msg.me{margin-left:auto;background:var(--brand);color:#fff;border:0}
.qbox{display:flex;gap:10px;align-items:flex-start}.vote{display:flex;flex-direction:column;align-items:center;min-width:42px}
.slides{position:relative;aspect-ratio:16/9;background:#000;border-radius:10px;overflow:hidden}.slides img{position:absolute;inset:0;width:100%;height:100%;object-fit:contain;opacity:0;transition:opacity .6s}.slides img.on{opacity:1}
#reader{max-width:420px;margin:0 auto}
.scan-result{font-size:1.2rem;padding:16px;border-radius:10px;margin-top:12px;text-align:center}.scan-result.ok{background:#dff3e7}.scan-result.err{background:#fbe3e0}.scan-result.warn{background:#fdf1d8}
/* event website */
.site-nav{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:5}.site-nav .container{display:flex;justify-content:space-between;align-items:center;padding:12px 20px}
.site-nav nav a{margin-left:16px;color:var(--ink);font-weight:500}
@media(max-width:720px){.site-nav nav a:not(.btn){display:none}}
.hero{background:linear-gradient(135deg,var(--brand),#13202e);color:#fff;padding:90px 20px;text-align:center;background-size:cover;background-position:center}
.hero h1{font-size:clamp(2rem,5vw,3.4rem);margin:0 0 10px}.hero p{font-size:1.2rem;opacity:.92}
.section{padding:56px 20px}.section:nth-of-type(even){background:#fff}.section h2{font-size:1.8rem;text-align:center;margin:0 0 28px}
.spk{text-align:center}.spk img,.spk .avatar{width:120px;height:120px;border-radius:50%;object-fit:cover;margin:0 auto 8px;display:flex}
.tier{margin-bottom:24px;text-align:center}.tier .logos{display:flex;flex-wrap:wrap;gap:24px;justify-content:center;align-items:center}.tier img{max-height:80px;max-width:200px}
.tier.platinum img{max-height:110px}.countdown{display:flex;gap:16px;justify-content:center}.countdown div{background:#fff;border-radius:10px;padding:14px 18px;min-width:84px;text-align:center;border:1px solid var(--line)}.countdown b{font-size:2rem;display:block;color:var(--brand)}
.faq details{background:#fff;border:1px solid var(--line);border-radius:8px;padding:12px 16px;margin-bottom:8px}.faq summary{font-weight:600;cursor:pointer}
.ticket-row{display:flex;justify-content:space-between;align-items:center;gap:12px;padding:14px 0;border-bottom:1px solid var(--line)}
.qty{width:80px!important}
.att{border:1px solid var(--line);border-radius:10px;padding:14px;margin-bottom:14px;background:#fcfdfe}
.footer{padding:30px 20px;text-align:center;color:var(--muted);font-size:.85rem}
.section-editor{border:1px solid var(--line);border-radius:10px;margin-bottom:10px;background:#fff}.section-editor summary{padding:12px 14px;cursor:pointer;font-weight:600;display:flex;justify-content:space-between}
.section-editor .body{padding:0 14px 14px}
.kiosk{background:var(--brand);min-height:100vh;color:#fff;padding:30px}.kiosk .card{color:var(--ink)}
.present{background:#0e1621;color:#fff;min-height:100vh;padding:40px;font-size:1.4rem}.present .q{background:#1b2735;border-radius:14px;padding:22px;margin-bottom:14px}
@media print{.side,.topbar,.bnav,.apphead,.btn{display:none!important}}