/* Layout: sticky masthead + full-bleed home band (exercise-book grid on deep blue), single workspace column. */
:root{
  --bg:#F3F6FB; --surface:#FFFFFF; --sunk:#E9EEF7; --ink:#14213D; --muted:#56627C; --line:#D8E0EE;
  --accent:#1D4ED8; --accent-ink:#FFFFFF; --accent-soft:color-mix(in srgb,var(--accent) 13%,var(--surface)); --rule:#C93B3B;
  --band1:#0E2560; --band2:#1D4ED8;
  --ok:#17784A; --ok-soft:#DFF3E8; --warn:#9A5B00; --warn-soft:#FBEFD9; --bad:#B42318; --bad-soft:#FBE4E1;
  --f-display:"Bricolage Grotesque", "Segoe UI", system-ui, sans-serif;
  --f-body:"Source Sans 3", "Segoe UI", system-ui, sans-serif;
  --f-mono:"IBM Plex Mono", ui-monospace, Consolas, monospace;
  --r:10px;
}
@media (prefers-color-scheme: dark){:root:not([data-theme="light"]){
  --bg:#0D1322; --surface:#151D31; --sunk:#1B2540; --ink:#E6ECF8; --muted:#9CA8C2; --line:#28324D;
  --accent:#7DA2FF; --accent-ink:#0D1322; --accent-soft:color-mix(in srgb,var(--accent) 18%,var(--surface)); --rule:#F07A7A;
  --ok:#5CD39A; --ok-soft:#123326; --warn:#F2B451; --warn-soft:#3A2B10; --bad:#FF8A80; --bad-soft:#3D1715; color-scheme:dark}}
:root[data-theme="dark"]{
  --bg:#0D1322; --surface:#151D31; --sunk:#1B2540; --ink:#E6ECF8; --muted:#9CA8C2; --line:#28324D;
  --accent:#7DA2FF; --accent-ink:#0D1322; --accent-soft:color-mix(in srgb,var(--accent) 18%,var(--surface)); --rule:#F07A7A;
  --ok:#5CD39A; --ok-soft:#123326; --warn:#F2B451; --warn-soft:#3A2B10; --bad:#FF8A80; --bad-soft:#3D1715; color-scheme:dark}
*{box-sizing:border-box}
body{background:var(--bg);color:var(--ink);font:16px/1.5 var(--f-body)}
body::before{content:"";position:fixed;inset:0 0 auto;height:env(safe-area-inset-top,0px);z-index:10;background:var(--surface)}
h1,h2,h3{font-family:var(--f-display);line-height:1.15;text-wrap:balance;margin:0}
h1{font-size:clamp(1.9rem,4.4vw,3rem);letter-spacing:-.02em}
h2{font-size:1.45rem;letter-spacing:-.01em}
h3{font-size:1.08rem}
p{margin:0}
a{color:var(--accent)}
.mono{font-family:var(--f-mono);font-size:.85em}
.muted{color:var(--muted)}
.small{font-size:.875rem}
.label{font-size:.72rem;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);font-weight:700}
.wrap{max-width:1180px;margin:0 auto;padding-left:max(16px,env(safe-area-inset-left,0px));padding-right:max(16px,env(safe-area-inset-right,0px))}

header.top{position:sticky;top:env(safe-area-inset-top,0px);z-index:9;background:var(--surface);border-bottom:1px solid var(--line)}
.bar{display:flex;align-items:center;gap:12px;padding-block:10px;flex-wrap:wrap}
.brand{display:flex;align-items:center;gap:10px;font-family:var(--f-display);font-weight:700;font-size:1.25rem;cursor:pointer;background:none;border:0;color:var(--ink);padding:0}
.mark{width:34px;height:34px;border-radius:8px;background:var(--accent);color:var(--accent-ink);display:grid;place-items:center;font-size:1rem;position:relative;overflow:hidden}
.mark::after{content:"";position:absolute;left:7px;top:0;bottom:0;width:2px;background:var(--rule);opacity:.9}
.brand-mark{height:38px;width:auto;display:block}
.logo-plate{background:#fff;border-radius:16px;padding:10px 16px;display:inline-flex;align-items:center;box-shadow:0 10px 30px rgba(5,15,45,.25);align-self:flex-start}
.logo-plate img{display:block;height:var(--lh,120px);width:auto}
.spacer{flex:1}
.chip{display:flex;align-items:center;gap:8px;background:var(--sunk);border:1px solid var(--line);border-radius:999px;padding:4px 10px 4px 4px;cursor:pointer;color:var(--ink);font:inherit;font-size:.9rem}
nav.strip{display:flex;flex-wrap:wrap;gap:2px 2px;padding-bottom:6px}
@media (max-width:640px){.strip button{padding:6px 9px;font-size:.86rem}}
nav.strip::-webkit-scrollbar{display:none}
nav.strip button{white-space:nowrap;border:0;background:none;color:var(--muted);font:600 .92rem var(--f-body);padding:7px 11px;border-radius:7px;cursor:pointer}
nav.strip button:hover{color:var(--ink);background:var(--sunk)}
nav.strip button[aria-current="page"]{color:var(--accent);background:var(--accent-soft)}
.dot{display:inline-block;min-width:18px;height:18px;border-radius:9px;background:var(--rule);color:#fff;font-size:.7rem;line-height:18px;text-align:center;padding:0 5px;margin-left:4px;font-family:var(--f-mono)}
.announce{padding-block:8px;font-weight:600;font-size:.92rem;text-align:center}
.announce.info{background:var(--accent-soft);color:var(--ink)}
.announce.warn{background:var(--warn-soft);color:var(--ink)}
.draftbar{background:var(--ink);color:var(--surface);padding-block:8px;font-size:.9rem}
.draftbar .wrap{display:flex;gap:10px;align-items:center;flex-wrap:wrap}

/* home band */
.band{position:relative;color:#fff;overflow:hidden;isolation:isolate;
  background:
   radial-gradient(900px 520px at 88% -12%,rgba(56,189,248,.32),transparent 62%),
   radial-gradient(640px 460px at 108% 92%,rgba(245,184,61,.26),transparent 62%),
   radial-gradient(760px 560px at -12% 112%,rgba(99,102,241,.34),transparent 62%),
   linear-gradient(160deg,var(--band1) 0%,color-mix(in srgb,var(--band1) 70%,#000) 48%,var(--band2) 145%)}
.band::before{content:"";position:absolute;inset:0;z-index:-2;background-image:var(--hero-img,none);background-size:cover;background-position:center;opacity:.18;mix-blend-mode:luminosity}
.band::after{content:"";position:absolute;inset:0;z-index:-1;pointer-events:none;background-image:radial-gradient(rgba(255,255,255,.18) 1px,transparent 1.5px);background-size:22px 22px;
  -webkit-mask-image:radial-gradient(ellipse 60% 75% at 78% 40%,#000 0%,transparent 72%);mask-image:radial-gradient(ellipse 60% 75% at 78% 40%,#000 0%,transparent 72%)}
.band .orbit{position:absolute;right:-180px;top:50%;width:min(820px,95vw);aspect-ratio:1;transform:translateY(-50%);z-index:-1;pointer-events:none;border-radius:50%;
  background:radial-gradient(circle,transparent 57%,rgba(255,255,255,.07) 57.3%,transparent 57.8%),radial-gradient(circle,transparent 70%,rgba(255,255,255,.06) 70.3%,transparent 70.8%),radial-gradient(circle,transparent 84%,rgba(255,255,255,.05) 84.3%,transparent 84.8%)}
.band .wrap{padding-block:clamp(36px,6vw,84px);position:relative}
.band .label{color:rgba(255,255,255,.78)}
.band h1,.band h2{color:#fff}
.band h1{font-size:clamp(2.1rem,4.6vw,3.35rem);letter-spacing:-.025em;line-height:1.08}
.band p.lead{color:rgba(255,255,255,.86);max-width:58ch;font-size:1.1rem;line-height:1.6}
.band .btn{border-color:rgba(255,255,255,.32);background:rgba(255,255,255,.08);color:#fff;padding:11px 18px;border-radius:10px}
.band .btn:hover{background:rgba(255,255,255,.16);border-color:#fff}
.band .btn.primary{background:linear-gradient(180deg,#FFD36B,#F5B83D);color:#14213D;border-color:transparent;box-shadow:0 10px 26px rgba(245,184,61,.35)}
.band .btn.primary:hover{filter:brightness(1.05)}
.band .btn.ghost{background:transparent;border-color:transparent;color:#fff;text-decoration:underline;text-underline-offset:3px;padding-inline:6px}
.pill{display:inline-flex;align-items:center;gap:8px;align-self:flex-start;padding:6px 12px 6px 8px;border:1px solid rgba(255,255,255,.22);border-radius:999px;background:rgba(255,255,255,.08);font-size:.82rem;font-weight:600;color:#fff;backdrop-filter:blur(6px)}
.pill img{height:24px;width:auto;background:#fff;border-radius:6px;padding:1px 3px}
.pill i{width:8px;height:8px;border-radius:50%;background:#34D399;box-shadow:0 0 0 4px rgba(52,211,153,.2)}
.hero{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,1fr);gap:clamp(28px,4vw,56px);align-items:center}
@media (max-width:900px){.hero{grid-template-columns:minmax(0,1fr)}}
.showcase{position:relative;min-height:540px}
.sc{position:absolute;background:var(--surface);color:var(--ink);border-radius:16px;padding:16px 18px;box-shadow:0 24px 60px rgba(3,10,35,.45),0 2px 6px rgba(3,10,35,.2);border:1px solid rgba(255,255,255,.4)}
.sc .k{font:700 .7rem var(--f-body);letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}
.sc h4{margin:4px 0 2px;font:700 1.08rem var(--f-display)}
.sc-steps{left:0;top:84px;width:min(76%,360px);z-index:2}
.sc-steps ol{list-style:none;margin:10px 0 0;padding:0;display:grid;gap:9px}
.sc-steps li{display:flex;gap:10px;align-items:flex-start;font-size:.92rem}
.sc-steps li b{flex:none;width:22px;height:22px;border-radius:50%;display:grid;place-items:center;background:var(--accent-soft);color:var(--accent);font:700 .75rem var(--f-body)}
.sc-steps .note{margin-top:10px;font-size:.82rem;color:var(--muted)}
.sc-job{right:0;top:0;width:min(58%,290px);z-index:1}
.sc-live{right:0;bottom:0;width:min(58%,300px);z-index:3}
.sc-live .avs{display:flex}.sc-live .avs span{width:30px;height:30px;border-radius:50%;border:2px solid var(--surface);margin-left:-8px;display:grid;place-items:center;font:700 .7rem var(--f-body);color:#fff}
.sc-live .avs span:first-child{margin-left:0}
.sc-chip{left:0;bottom:84px;z-index:4;padding:9px 14px;display:flex;gap:8px;align-items:center;font-size:.82rem;border-radius:999px;max-width:40%}
.sc-chip b{color:var(--ok)}
.chips2{display:flex;flex-wrap:wrap;gap:6px;margin-top:8px}.chips2 span{font:600 .72rem var(--f-body);padding:3px 9px;border-radius:999px;background:var(--sunk);color:var(--muted)}
@media (prefers-reduced-motion:no-preference){.sc-job{animation:float1 7s ease-in-out infinite}.sc-live{animation:float1 8s ease-in-out -3s infinite}.sc-chip{animation:float1 6s ease-in-out -1s infinite}@keyframes float1{50%{transform:translateY(-8px)}}}
@media (max-width:900px){.showcase{min-height:0;display:grid;gap:12px}.sc{position:static;width:auto}.sc-live,.sc-chip{display:none}}
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:12px;margin-top:clamp(28px,4vw,48px)}
.stats div{display:flex;flex-direction:column;gap:2px;padding:14px 16px;border:1px solid rgba(255,255,255,.14);border-radius:14px;background:rgba(255,255,255,.06);backdrop-filter:blur(6px)}
.stats b{font-family:var(--f-display);font-size:1.9rem;line-height:1}
.stats span{font-size:.82rem;color:rgba(255,255,255,.75)}
.greet{display:flex;flex-wrap:wrap;gap:18px;align-items:center;justify-content:space-between}
.qstats{display:flex;flex-wrap:wrap;gap:10px;margin-top:16px}.qstats button{display:flex;flex-direction:column;align-items:flex-start;gap:2px;border:1px solid rgba(255,255,255,.16);background:rgba(255,255,255,.07);color:#fff;border-radius:12px;padding:10px 14px;cursor:pointer;font:inherit;min-width:130px}
.qstats b{font:700 1.4rem var(--f-display);line-height:1}.qstats span{font-size:.78rem;opacity:.8}
.feat .ico{width:42px;height:42px;border-radius:12px;display:grid;place-items:center;background:var(--accent-soft);font-size:1.3rem}
.infobar{background:#0B1F4D;color:#dbe4ff;font-size:.8rem;line-height:1.3}
.infobar .wrap{display:flex;justify-content:space-between;align-items:center;gap:4px 16px;flex-wrap:wrap;padding-top:5px;padding-bottom:5px}
.infobar svg{width:14px;height:14px;fill:none;stroke:currentColor;stroke-width:2;flex:none}
.ib-clock,.ib-views{display:inline-flex;align-items:center;gap:6px;flex-wrap:wrap}
#tc-time,#tc-views,#tc-online{font-variant-numeric:tabular-nums;color:#fff}
.ib-tz{opacity:.7}.ib-sep{opacity:.5;margin:0 2px}
.ib-live{width:8px;height:8px;border-radius:50%;background:#22c55e;box-shadow:0 0 0 0 rgba(34,197,94,.6);animation:ibp 2s infinite;flex:none}
@keyframes ibp{70%{box-shadow:0 0 0 6px rgba(34,197,94,0)}100%{box-shadow:0 0 0 0 rgba(34,197,94,0)}}
@media (prefers-reduced-motion:reduce){.ib-live{animation:none}.fpop{animation:none}}
@media (max-width:640px){.ib-tz{display:none}.infobar{font-size:.74rem}}
.fpop{position:fixed;right:16px;bottom:16px;z-index:60;width:min(360px,calc(100vw - 32px));max-height:calc(100vh - 32px);overflow:auto;background:var(--surface);color:var(--ink);border:1px solid var(--line);border-radius:16px;box-shadow:0 18px 50px rgba(15,23,42,.28);padding:18px;animation:fpin .35s ease-out}
.fpop h3{margin:6px 0 4px;font-size:1.1rem}.fpop p{margin:0 0 10px}
.fpop-x{position:absolute;top:8px;right:8px;border:0;background:none;font-size:1.4rem;line-height:1;cursor:pointer;color:var(--muted);width:32px;height:32px;border-radius:8px}
.fpop-x:hover{background:var(--sunk);color:var(--ink)}
.fpop-badge{width:38px;height:38px;border-radius:50%;display:grid;place-items:center;background:linear-gradient(135deg,#FBBF24,#F59E0B);color:#fff;font-size:1.15rem;box-shadow:0 4px 12px rgba(245,158,11,.35)}
@keyframes fpin{from{transform:translateY(16px);opacity:0}}
.fgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:14px}
.fcard{display:flex;flex-direction:column;align-items:center;text-align:center;gap:6px}
.fcard img,.fcard .fav{width:84px;height:84px;border-radius:50%;object-fit:cover}
.fcard .fav{display:grid;place-items:center;background:var(--accent-soft);color:var(--accent);font:700 1.6rem var(--f-display)}
body.no-ads ins.adsbygoogle,body.no-ads .google-auto-placed,body.no-ads .ad-wrap{display:none!important}
.ad-wrap{display:flex;flex-direction:column;gap:4px;margin-block:4px;min-height:0}
.ad-label{font-size:.68rem;letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}

main{padding-block:24px 48px;min-height:60vh}
.stack{display:flex;flex-direction:column;gap:16px}
.row{display:flex;flex-wrap:wrap;gap:10px;align-items:center}
.between{justify-content:space-between}
.grid{display:grid;gap:16px}
.g2{grid-template-columns:repeat(auto-fit,minmax(280px,1fr))}
.g3{grid-template-columns:repeat(auto-fit,minmax(240px,1fr))}
.home{display:grid;gap:20px;align-items:start}
.home.three{grid-template-columns:260px minmax(0,1fr) 280px}
.home.two{grid-template-columns:minmax(0,1fr) 300px}
.home.one{grid-template-columns:minmax(0,760px);justify-content:center}
@media (max-width:980px){.home.three,.home.two{grid-template-columns:minmax(0,1fr)}}
.split{display:grid;grid-template-columns:300px minmax(0,1fr);gap:16px;align-items:start}
@media (max-width:780px){.split{grid-template-columns:minmax(0,1fr)}}
.panel{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:18px;min-width:0}
.panel.flat{background:transparent;border-style:dashed}
.sub{display:flex;gap:6px;flex-wrap:wrap;border-bottom:1px solid var(--line);padding-bottom:10px}
.menav{margin-bottom:16px}
.sub button{border:1px solid var(--line);background:var(--surface);color:var(--ink);border-radius:999px;padding:5px 13px;font:600 .88rem var(--f-body);cursor:pointer}
.sub button[aria-pressed="true"]{background:var(--ink);color:var(--surface);border-color:var(--ink)}

.btn{display:inline-flex;align-items:center;gap:6px;border:1px solid var(--line);background:var(--surface);color:var(--ink);border-radius:8px;padding:8px 14px;font:600 .92rem var(--f-body);cursor:pointer;text-decoration:none}
.btn:hover{border-color:var(--accent)}
.btn:disabled{opacity:.5;cursor:not-allowed}
.btn.primary{background:var(--accent);color:var(--accent-ink);border-color:var(--accent)}
.btn.primary:hover{filter:brightness(1.08)}
.btn.ghost{border-color:transparent;background:transparent;color:var(--accent);padding-inline:8px}
.btn.danger{color:var(--bad)}
.btn.sm{padding:4px 10px;font-size:.82rem}
button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,a:focus-visible{outline:3px solid var(--accent);outline-offset:2px}
label.f{display:flex;flex-direction:column;gap:4px;font-size:.88rem;font-weight:600;min-width:0}
input,select,textarea{font:inherit;font-size:.95rem;color:var(--ink);background:var(--bg);border:1px solid var(--line);border-radius:8px;padding:8px 10px;width:100%;min-width:0}
input[type=color]{padding:2px;height:38px}
.pw-wrap{position:relative;display:flex;align-items:center;width:100%;min-width:0}
.pw-wrap.inl{display:inline-flex;width:auto;vertical-align:middle}
.pw-wrap>input{padding-right:40px!important;width:100%}
.pw-eye{position:absolute;right:4px;top:50%;transform:translateY(-50%);width:32px;height:30px;display:grid;place-items:center;border:0;background:none;color:#64748b;cursor:pointer;border-radius:6px;padding:0}
.pw-eye:hover{color:var(--accent);background:var(--sunk)}
.pw-eye:focus-visible{outline:2px solid var(--accent);outline-offset:1px}
.pw-eye svg{width:18px;height:18px}
input[type=checkbox],input[type=radio]{width:auto}
textarea{resize:vertical;min-height:80px}
.form{display:grid;gap:12px;grid-template-columns:repeat(auto-fit,minmax(200px,1fr))}
.form .full{grid-column:1/-1}
.form h3{grid-column:1/-1}
.hint{font-weight:400;color:var(--muted);font-size:.8rem}
.err{color:var(--bad);font-size:.88rem;font-weight:600}
.check{display:flex;flex-direction:row;gap:8px;align-items:center;font-weight:400}

.b{display:inline-flex;align-items:center;gap:4px;font:700 .72rem var(--f-body);letter-spacing:.03em;padding:2px 8px;border-radius:999px;background:var(--sunk);color:var(--muted);white-space:nowrap}
.b.ok{background:var(--ok-soft);color:var(--ok)} .b.warn{background:var(--warn-soft);color:var(--warn)} .b.bad{background:var(--bad-soft);color:var(--bad)} .b.acc{background:var(--accent-soft);color:var(--accent)}
.av{width:40px;height:40px;border-radius:50%;background:var(--accent-soft);color:var(--accent);display:grid;place-items:center;font:700 .95rem var(--f-display);flex:none}
.av.lg{width:84px;height:84px;font-size:1.8rem;border:4px solid var(--surface)}
.av.sm{width:28px;height:28px;font-size:.75rem}
img.av{object-fit:cover;display:block}
.photo-edit{display:flex;gap:16px;align-items:center;flex-wrap:wrap;padding:14px;border:1px dashed var(--line);border-radius:var(--r);background:var(--sunk)}
.drop{position:relative;display:inline-flex;overflow:hidden}
.drop input{position:absolute;inset:0;opacity:0;cursor:pointer}

.list{display:flex;flex-direction:column}
.item{display:flex;gap:12px;padding:12px 0;border-top:1px solid var(--line);align-items:flex-start}
.item:first-child{border-top:0}
.item .body{flex:1;min-width:0}
.post{display:flex;flex-direction:column;gap:10px}
.post .text{white-space:pre-wrap;overflow-wrap:anywhere}
.comment{background:var(--sunk);border-radius:8px;padding:8px 10px;font-size:.92rem}
.meter{height:8px;background:var(--sunk);border-radius:4px;overflow:hidden}
.meter>i{display:block;height:100%;background:var(--accent)}
.notice{border-left:3px solid var(--warn);background:var(--warn-soft);color:var(--ink);padding:10px 14px;border-radius:0 8px 8px 0;font-size:.9rem}
.notice.info{border-color:var(--accent);background:var(--accent-soft)}
.feat{display:flex;flex-direction:column;gap:6px;text-align:left;cursor:pointer;font:inherit;color:inherit}
.feat:hover{border-color:var(--accent)}
.feat .num{font-family:var(--f-mono);font-size:.75rem;color:var(--accent)}

.tw{overflow-x:auto;border:1px solid var(--line);border-radius:var(--r)}
table{border-collapse:collapse;width:100%;font-size:.92rem}
th,td{padding:8px 10px;border-bottom:1px solid var(--line);text-align:left;vertical-align:middle}
th{background:var(--sunk);font-size:.78rem;text-transform:uppercase;letter-spacing:.05em;color:var(--muted)}
td.n,th.n{text-align:right;font-variant-numeric:tabular-nums}
td input{padding:4px 6px;width:70px;text-align:right;font-variant-numeric:tabular-nums}
td input.bad{border-color:var(--bad);background:var(--bad-soft)}
td input.wide{width:100%;text-align:left}

.chat{display:flex;flex-direction:column;height:min(560px,70vh)}
.msgs{flex:1;overflow-y:auto;display:flex;flex-direction:column;gap:8px;padding:6px 2px}
.bub{max-width:78%;padding:8px 12px;border-radius:12px;background:var(--sunk);overflow-wrap:anywhere;white-space:pre-wrap}
.bub.me{align-self:flex-end;background:var(--accent);color:var(--accent-ink)}
.convo{width:100%;text-align:left;border:0;background:none;color:inherit;font:inherit;cursor:pointer;padding:10px;border-radius:8px;display:flex;gap:10px;align-items:center}
.convo:hover,.convo[aria-current="true"]{background:var(--sunk)}

.cert{background:var(--surface);border:2px solid var(--ink);outline:6px double var(--accent);outline-offset:-14px;border-radius:4px;padding:44px clamp(20px,5vw,56px);text-align:center;display:flex;flex-direction:column;gap:12px;align-items:center}
.cert .who{font-family:var(--f-display);font-size:clamp(1.6rem,4vw,2.4rem)}
.cert .ref{font-family:var(--f-mono);letter-spacing:.1em}

.room{display:grid;gap:8px}
.seat{border:1px solid var(--line);background:var(--surface);border-radius:8px;min-height:62px;padding:6px;font:600 .82rem var(--f-body);color:var(--ink);cursor:pointer;display:flex;flex-direction:column;justify-content:center;align-items:center;text-align:center;overflow-wrap:anywhere}
.seat .pc{font-family:var(--f-mono);font-size:.68rem;color:var(--muted)}
.seat.sel{outline:3px solid var(--accent)}
.seat.lock{background:var(--warn-soft);border-color:var(--warn)}
.board{background:var(--ink);color:var(--surface);text-align:center;border-radius:6px;padding:6px;font:700 .8rem var(--f-body);letter-spacing:.1em}

.stage{background:var(--ink);color:var(--surface);border-radius:var(--r);padding:28px;text-align:center;min-height:220px;display:flex;flex-direction:column;justify-content:center;gap:16px}
.stage .big{font-family:var(--f-display);font-size:clamp(2rem,6vw,4rem);line-height:1.05}
.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(130px,1fr));gap:10px}
.card{min-height:96px;border-radius:10px;border:0;cursor:pointer;font:700 1rem var(--f-body);padding:10px;background:var(--accent);color:var(--accent-ink)}
.card.up{background:var(--surface);color:var(--ink);border:2px solid var(--accent)}
.card.done{background:var(--ok-soft);color:var(--ok);cursor:default}

.paper{background:var(--surface);border:1px solid var(--line);padding:28px;border-radius:4px;font-size:.98rem}
.paper ol{padding-left:22px;display:flex;flex-direction:column;gap:16px}
.marks{float:right;font-family:var(--f-mono);font-size:.82rem;color:var(--muted)}
.matchgrid{display:grid;grid-template-columns:1fr 1fr;gap:4px 24px;margin-top:6px}
.ai{border:1px solid var(--accent);background:linear-gradient(180deg,var(--accent-soft),var(--surface) 70%)}
.thumbs{display:flex;flex-wrap:wrap;gap:8px}
.thumb{position:relative;width:92px;height:120px;border-radius:6px;overflow:hidden;border:1px solid var(--line);background:var(--sunk)}
.thumb img{width:100%;height:100%;object-fit:cover;display:block}
.thumb button{position:absolute;top:4px;right:4px;border:0;border-radius:50%;width:22px;height:22px;background:rgba(0,0,0,.65);color:#fff;cursor:pointer;font-size:.8rem;line-height:22px;padding:0}
.counts{display:grid;grid-template-columns:repeat(auto-fit,minmax(120px,1fr));gap:8px}
.qcard{border:1px solid var(--line);border-radius:8px;padding:12px;display:flex;flex-direction:column;gap:6px}
.qcard.draft{border-color:var(--warn);background:var(--warn-soft)}
.cbgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(210px,1fr));gap:16px}
.cbpage{container-type:inline-size;aspect-ratio:210/297;background:#fff;color:#000;border:1px solid var(--line);border-radius:4px;padding:5%;display:grid;grid-template-rows:auto auto minmax(0,1fr) auto;gap:1.6%;overflow:hidden;box-shadow:0 4px 14px rgba(10,20,50,.12)}
.cbhead{display:flex;gap:4cqw;align-items:center;min-height:12cqw}
.cbhead img{height:13cqw;width:auto;max-width:28cqw;object-fit:contain}
.cbtitle{min-width:0}.cbtitle .sch{font-size:3.4cqw;font-weight:600}
.cbtitle b{font-family:var(--f-display);font-size:6.4cqw;line-height:1.1;display:block;overflow-wrap:anywhere}
.cblines{display:flex;flex-wrap:wrap;gap:1cqw 4cqw;font-size:3.4cqw}
.cblines .fill{display:inline-block;min-width:16cqw;border-bottom:.35cqw solid #000;padding:0 1cqw}
.cblines .fill.long{min-width:34cqw}
.cbpic{min-height:0;border:.6cqw solid #000;border-radius:3cqw;position:relative}
.cbpic img{position:absolute;inset:3cqw;width:calc(100% - 6cqw);height:calc(100% - 6cqw);object-fit:contain}
.cbcap{text-align:center;font-family:var(--f-display);font-size:6cqw;font-weight:700;letter-spacing:.05em}
.chips{display:flex;flex-wrap:wrap;gap:6px}
.chips button{border:1px solid var(--line);background:var(--surface);color:var(--ink);border-radius:999px;padding:3px 10px;font:600 .8rem var(--f-body);cursor:pointer}
.chips.subj button[aria-pressed="true"]{background:var(--ink);color:var(--surface);border-color:var(--ink)}
.chips button:hover{border-color:var(--accent);color:var(--accent)}
.gstage{background:linear-gradient(135deg,var(--band1),var(--band2));color:#fff;border-radius:var(--r);padding:clamp(16px,3vw,32px);min-height:380px;display:flex;flex-direction:column;gap:16px;text-align:center;justify-content:center}
.gbig{font-family:var(--f-display);font-size:clamp(2rem,6vw,4rem);line-height:1.1;font-weight:700;overflow-wrap:anywhere}
.gq{font-family:var(--f-display);font-size:clamp(1.4rem,3.6vw,2.6rem);line-height:1.2;font-weight:700;overflow-wrap:anywhere}
.glabel{font-size:.85rem;letter-spacing:.06em;text-transform:uppercase;opacity:.85;font-weight:700}
.glead{font-size:clamp(1rem,2.2vw,1.4rem);opacity:.92;margin:0}
.gbtn{background:#fff;color:#0E2560;border:0;border-radius:12px;padding:12px 20px;font:700 clamp(1rem,2.2vw,1.4rem) var(--f-body);cursor:pointer;min-height:52px;overflow-wrap:anywhere}
.gbtn.small{font-size:1rem;min-height:40px;padding:8px 14px}
.gbtn.right{background:#22C55E;color:#fff}.gbtn.wrong{background:#EF4444;color:#fff}.gbtn.sel{outline:4px solid #FACC15;outline-offset:2px}
.gbtn:disabled{cursor:default}.gbtn:disabled:not(.right):not(.wrong){opacity:.55}
.gstage button:focus-visible{outline:4px solid #FACC15;outline-offset:2px}
.gopts{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,240px),1fr));gap:12px}
.gteam{background:rgba(255,255,255,.15);border-radius:999px;padding:6px 14px;font-weight:700;overflow-wrap:anywhere}
.gboard{display:grid;gap:10px}
.gtile{background:#FACC15;color:#0E2560;border:0;border-radius:10px;font:800 clamp(1.4rem,4vw,2.4rem) var(--f-display);min-height:clamp(60px,10vw,100px);cursor:pointer}
.gtile:disabled{background:rgba(255,255,255,.12);cursor:default}
.gcards{display:grid;grid-template-columns:repeat(auto-fill,minmax(120px,1fr));gap:10px}
.gcard{min-height:100px;border-radius:12px;border:0;background:#FACC15;color:#0E2560;font:800 1.1rem var(--f-body);cursor:pointer;padding:8px;overflow-wrap:anywhere}
.gcard.up{background:#fff}.gcard.done{background:#22C55E;color:#fff}.gcard.emo.up,.gcard.emo.done{font-size:2.6rem}
.gmatch{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.4fr);gap:16px}
.gflash{background:#fff;color:#0E2560;border:0;border-radius:18px;min-height:clamp(200px,34vw,340px);font:800 clamp(2rem,6vw,4rem) var(--f-display);cursor:pointer;padding:20px;overflow-wrap:anywhere}
.gword{display:flex;flex-wrap:wrap;gap:8px;justify-content:center}
.gword span{min-width:clamp(30px,6vw,56px);min-height:1.3em;border-bottom:4px solid #fff;font:800 clamp(1.6rem,5vw,3rem) var(--f-mono);text-align:center}
.gword span.tile{background:#fff;color:#0E2560;border:0;border-radius:8px;padding:4px 6px}
.gkeys{display:flex;flex-wrap:wrap;gap:6px;justify-content:center;max-width:760px;margin:0 auto}
.gkey{width:clamp(36px,6vw,52px);height:clamp(40px,6vw,52px);border:0;border-radius:8px;background:#fff;color:#0E2560;font:800 1.2rem var(--f-body);cursor:pointer}
.gkey.right{background:#22C55E;color:#fff}.gkey.wrong{background:rgba(255,255,255,.2);color:#fff}
.gws{display:grid;grid-template-columns:minmax(0,2fr) minmax(0,1fr);gap:16px;align-items:start;text-align:left}
@media (max-width:700px){.gws,.gmatch{grid-template-columns:minmax(0,1fr)}}
.gwsgrid{display:grid;gap:2px;background:rgba(255,255,255,.2);padding:4px;border-radius:8px}
.gwscell{aspect-ratio:1;border:0;background:#fff;color:#0E2560;font:800 clamp(.7rem,2.2vw,1.4rem) var(--f-mono);cursor:pointer;padding:0;border-radius:3px;min-width:0}
.gwscell.found{background:#22C55E;color:#fff}.gwscell.sel{background:#FACC15}
.gcw{display:grid;margin:0 auto;width:100%}
.gcwcell{aspect-ratio:1;background:#fff;color:#0E2560;border:1px solid #0E2560;position:relative;display:grid;place-items:center;font:800 clamp(.7rem,2vw,1.3rem) var(--f-mono);min-width:0}
.gcwcell i{position:absolute;top:1px;left:2px;font:600 .55em var(--f-body);font-style:normal}
.gclue{background:rgba(255,255,255,.1);border:0;color:#fff;text-align:left;padding:6px 10px;border-radius:8px;font:500 .95rem var(--f-body);cursor:pointer}
.gclue.on{background:rgba(34,197,94,.35)}
.gblank{display:inline-block;min-width:3em;border-bottom:4px solid #FACC15;color:#FACC15}
.gwheel{position:relative;width:min(100%,520px);margin:0 auto}
.gwheel canvas{width:100%;height:auto;display:block}
.gpointer{position:absolute;top:-6px;left:50%;transform:translateX(-50%);border-left:18px solid transparent;border-right:18px solid transparent;border-top:34px solid #FACC15}
.gclock{font:800 clamp(4rem,18vw,11rem) var(--f-mono);line-height:1;font-variant-numeric:tabular-nums}
.gscore{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:12px}
.gsteam{background:rgba(255,255,255,.12);border-radius:14px;padding:14px;display:flex;flex-direction:column;gap:8px}
.gsteam input{background:transparent;border:0;color:#fff;text-align:center;font:800 1.4rem var(--f-display)}
body.present>header,body.present>footer,body.present #band{display:none}
body.present #main{max-width:none;padding-block:12px}
body.present #main>.stack>:not(:has(#stagewrap)),body.present #main>.stack>.stack>:not(#stagewrap){display:none}
body.present .gstage{min-height:calc(100vh - 120px)}
.btn.logout{border-color:var(--bad);color:var(--bad);background:var(--surface)}
.btn.logout:hover{background:var(--bad);color:#fff}
.lv-pre{background:#0B1220;border-radius:var(--r);aspect-ratio:16/9;max-width:100%;display:grid;place-items:center;position:relative;overflow:hidden;color:#fff}
.lv-pre video{width:100%;height:100%;object-fit:cover;position:absolute;inset:0}
.lv-pre span{position:relative;background:rgba(0,0,0,.55);padding:4px 10px;border-radius:999px}
.lv-room{background:#0B1220;color:#E6ECF8;border-radius:var(--r);padding:12px;display:flex;flex-direction:column;gap:10px}
.lv-top{display:flex;justify-content:space-between;align-items:center;gap:8px;flex-wrap:wrap}
.lv-main{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:10px;min-height:min(70vh,640px)}
@media (max-width:860px){.lv-main{grid-template-columns:minmax(0,1fr)}}
.lv-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,260px),1fr));gap:8px;align-content:start}
.lv-tile{position:relative;background:#1B2540;border-radius:10px;overflow:hidden;aspect-ratio:4/3}
.lv-tile video{width:100%;height:100%;object-fit:cover;display:block;background:#1B2540}
.lv-name{position:absolute;left:8px;bottom:8px;background:rgba(0,0,0,.6);padding:2px 10px;border-radius:999px;font-size:.85rem;max-width:calc(100% - 16px);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.lv-conn{position:absolute;right:8px;top:8px;font-size:.75rem;background:rgba(0,0,0,.5);border-radius:6px;padding:0 6px}
.lv-conn:empty{display:none}
.lv-side{background:#151D31;border-radius:10px;padding:10px;display:flex;flex-direction:column;gap:8px;min-height:0}
.lv-tabs{display:flex;gap:4px}
.lv-tabs button{flex:1;border:0;border-radius:8px;padding:6px;background:#1B2540;color:#E6ECF8;font:600 .85rem var(--f-body);cursor:pointer}
.lv-tabs button[aria-pressed="true"]{background:#2563EB}
.lv-pane{display:flex;flex-direction:column;gap:8px;min-height:0;flex:1}
.lv-chat{flex:1;overflow-y:auto;display:flex;flex-direction:column;gap:6px;min-height:200px;max-height:52vh}
.lv-msg{background:#1B2540;border-radius:8px;padding:6px 10px;overflow-wrap:anywhere;font-size:.92rem}
.lv-pane input{background:#0B1220;color:#E6ECF8;border-color:#28324D}
#lv-board{width:100%;height:auto;aspect-ratio:10/7;background:#fff;border-radius:8px;cursor:crosshair}
.lv-color{width:26px;height:26px;border-radius:50%;border:2px solid transparent;cursor:pointer}
.lv-color.on{border-color:#fff;outline:2px solid #2563EB}
.lv-bar{display:flex;flex-wrap:wrap;gap:8px;justify-content:center}
.lv-btn{border:0;border-radius:999px;padding:10px 16px;background:#1B2540;color:#E6ECF8;font:600 .92rem var(--f-body);cursor:pointer}
.lv-btn.sm{padding:5px 12px;font-size:.8rem}
.lv-btn.off{background:#7F1D1D}.lv-btn.on{background:#2563EB}.lv-btn.danger{background:#DC2626;color:#fff}
.lv-btn:focus-visible,.lv-tabs button:focus-visible{outline:3px solid #FACC15}
.lang-sel{width:auto;max-width:180px;padding:5px 8px;font-size:.85rem;background:var(--surface)}
[dir="rtl"] .band::after{left:auto;right:clamp(18px,4vw,56px)}
[dir="rtl"] .ruled{padding:22px 46px 22px 22px;transform:rotate(-1.2deg)}
[dir="rtl"] .ruled::before{left:auto;right:30px}
[dir="rtl"] .notice{border-left:0;border-right:3px solid var(--warn);border-radius:8px 0 0 8px}
[dir="rtl"] .notice.info{border-right-color:var(--accent)}
[dir="rtl"] .tphoto em,[dir="rtl"] .lv-name{left:auto;right:10px}
.tgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:16px}
.tcard{padding:0;overflow:hidden;display:flex;flex-direction:column}
.tphoto{position:relative;display:block;width:100%;aspect-ratio:4/3;border:0;padding:0;cursor:pointer;background:linear-gradient(135deg,var(--band1),var(--band2));color:#fff}
.tphoto img{width:100%;height:100%;object-fit:cover;display:block}
.tphoto span{display:grid;place-items:center;height:100%;font:700 3rem var(--f-display)}
.tphoto em{position:absolute;left:10px;bottom:10px;font:700 .75rem var(--f-body);font-style:normal;background:#22C55E;color:#fff;padding:3px 10px;border-radius:999px}
.tphoto:hover img{filter:brightness(1.05)}
.navrow{display:grid;grid-template-columns:auto minmax(0,1fr) auto auto;gap:8px;align-items:center}

footer{border-top:1px solid var(--line);background:var(--surface)}
footer .wrap{padding-block:18px;display:flex;flex-wrap:wrap;gap:6px 14px;font-size:.88rem;color:var(--muted)}
footer button{background:none;border:0;color:var(--muted);font:inherit;cursor:pointer;padding:0}
footer button:hover{color:var(--accent)}
.toast{position:fixed;left:50%;transform:translateX(-50%);bottom:calc(20px + env(safe-area-inset-bottom,0px));background:var(--ink);color:var(--surface);padding:10px 18px;border-radius:999px;font-weight:600;z-index:20;box-shadow:0 6px 24px rgba(0,0,0,.25);max-width:calc(100% - 32px);text-align:center}
@media (prefers-reduced-motion:no-preference){.fade{animation:fade .25s ease-out}@keyframes fade{from{opacity:.4;transform:translateY(4px)}to{opacity:1;transform:none}}}