@font-face{font-family:'Geist';src:url('/assets/fonts/Geist-Variable.woff2') format('woff2');font-weight:100 900;font-display:swap}
@font-face{font-family:'Geist Mono';src:url('/assets/fonts/GeistMono-Variable.woff2') format('woff2');font-weight:100 900;font-display:swap}
:root{
  --bg:#0C0C0B;--bg-2:#111110;--surface:#161615;--surface-2:#1C1C1A;--hair:#2A2A27;--hair-2:#3A3A36;
  --ink:#EFEFEB;--ink-2:#B7B7B0;--ink-3:#8A8A83;--lime:#C6FF3A;--lime-ink:#0C0C0B;--lime-dim:rgba(198,255,58,.12);
  --warn:#F2C14E;--bad:#FF7A6B;--good:#8FE0A2;
  --sans:'Geist',system-ui,-apple-system,'Segoe UI',sans-serif;--mono:'Geist Mono',ui-monospace,Menlo,monospace;
  --r:10px;--side:248px;
}
*{box-sizing:border-box}
html,body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--sans);font-size:15px;line-height:1.6;-webkit-font-smoothing:antialiased}
a{color:inherit}
button,input,select,textarea{font:inherit;color:inherit}
::selection{background:var(--lime);color:var(--lime-ink)}
:focus-visible{outline:2px solid var(--lime);outline-offset:2px}
.mono{font-family:var(--mono)}
.muted{color:var(--ink-3)}
.small{font-size:13px}
.hidden{display:none!important}

/* shell */
.shell{display:grid;grid-template-columns:var(--side) 1fr;min-height:100vh}
.side{position:sticky;top:0;height:100vh;overflow:auto;border-right:1px solid var(--hair);background:var(--bg-2);padding:22px 16px;display:flex;flex-direction:column;gap:18px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none}
.brand svg{height:18px;width:auto;color:var(--lime)}
.brand b{font-weight:500;font-size:13px;letter-spacing:.02em;color:var(--ink-2)}
.ws{display:flex;flex-direction:column;gap:6px}
.ws label{font-family:var(--mono);font-size:10.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-3)}
.ws select{width:100%;background:var(--surface);border:1px solid var(--hair);border-radius:8px;padding:8px 10px}
.nav{display:flex;flex-direction:column;gap:2px}
.nav .grp{font-family:var(--mono);font-size:10.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-3);padding:14px 10px 6px}
.nav a{display:flex;align-items:center;justify-content:space-between;padding:8px 10px;border-radius:8px;text-decoration:none;color:var(--ink-2);font-size:14px}
.nav a:hover{background:var(--surface);color:var(--ink)}
.nav a.on{background:var(--surface-2);color:var(--ink)}
.nav a .count{font-family:var(--mono);font-size:11px;background:var(--lime);color:var(--lime-ink);border-radius:20px;padding:1px 7px}
.side .foot{margin-top:auto;font-size:13px;color:var(--ink-3);display:flex;flex-direction:column;gap:6px}
.side .foot a{text-decoration:none}
.side .foot a:hover{color:var(--ink)}
.main{min-width:0;padding:34px clamp(18px,4vw,56px) 80px}
.page{max-width:960px;margin:0 auto}
.topbar{display:none}
@media (max-width:860px){
  .shell{grid-template-columns:1fr}
  .side{position:fixed;inset:0 auto 0 0;width:min(84vw,300px);z-index:50;transform:translateX(-100%);transition:transform .25s}
  .side.open{transform:none;box-shadow:0 0 0 100vmax rgba(0,0,0,.55)}
  .topbar{display:flex;align-items:center;justify-content:space-between;padding:14px 18px;border-bottom:1px solid var(--hair);position:sticky;top:0;background:rgba(12,12,11,.92);backdrop-filter:blur(10px);z-index:40}
  .topbar button{background:none;border:1px solid var(--hair-2);border-radius:8px;padding:6px 10px}
  .main{padding-top:22px}
}

/* type */
h1{font-size:clamp(26px,3vw,34px);letter-spacing:-.03em;line-height:1.1;margin:0 0 8px;font-weight:600}
h2{font-size:19px;letter-spacing:-.015em;margin:34px 0 12px;font-weight:600}
h3{font-size:16px;margin:26px 0 8px;font-weight:600}
.kicker{font-family:var(--mono);font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--lime);margin-bottom:10px}
.lead{color:var(--ink-2);font-size:16px;max-width:680px;margin:0 0 6px}
.crumbs{font-size:13px;color:var(--ink-3);margin-bottom:18px}
.crumbs a{text-decoration:none}
.crumbs a:hover{color:var(--ink)}

/* blocks */
.card{background:var(--surface);border:1px solid var(--hair);border-radius:var(--r);padding:20px}
.card.tight{padding:14px 16px}
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.grid2{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
@media (max-width:860px){.grid3,.grid2{grid-template-columns:1fr}}
.stack{display:flex;flex-direction:column;gap:12px}
.row{display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.spread{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap}
.banner{border:1px dashed var(--hair-2);border-radius:var(--r);padding:10px 14px;font-size:13px;color:var(--ink-2);margin-bottom:22px}
.banner b{color:var(--lime);font-weight:600}
.notice{border-left:3px solid var(--lime);background:var(--lime-dim);padding:12px 14px;border-radius:0 8px 8px 0;font-size:14px}
.notice.warn{border-color:var(--warn);background:rgba(242,193,78,.1)}
.notice.bad{border-color:var(--bad);background:rgba(255,122,107,.1)}

.chip{display:inline-flex;align-items:center;gap:6px;font-family:var(--mono);font-size:10.5px;letter-spacing:.1em;text-transform:uppercase;border:1px solid var(--hair-2);border-radius:20px;padding:3px 9px;color:var(--ink-2);white-space:nowrap}
.chip.lime{border-color:var(--lime);color:var(--lime)}
.chip.good{border-color:var(--good);color:var(--good)}
.chip.warn{border-color:var(--warn);color:var(--warn)}
.chip.bad{border-color:var(--bad);color:var(--bad)}
.chip.solid{background:var(--lime);border-color:var(--lime);color:var(--lime-ink)}

.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:1px solid var(--hair-2);background:var(--surface-2);border-radius:999px;padding:9px 16px;font-size:14px;font-weight:500;text-decoration:none;cursor:pointer;color:var(--ink)}
.btn:hover{border-color:var(--ink-3)}
.btn.primary{background:var(--lime);border-color:var(--lime);color:var(--lime-ink);font-weight:600}
.btn.primary:hover{filter:brightness(1.06)}
.btn.ghost{background:none}
.btn.danger{border-color:rgba(255,122,107,.5);color:var(--bad);background:none}
.btn[disabled]{opacity:.45;cursor:not-allowed}
.btn.sm{padding:6px 12px;font-size:13px}
.link{background:none;border:0;padding:0;color:var(--lime);cursor:pointer;text-decoration:underline;text-underline-offset:3px}

.bar{height:6px;border-radius:6px;background:var(--hair);overflow:hidden}
.bar i{display:block;height:100%;background:var(--lime);border-radius:6px}

/* level cards */
.lvl{display:flex;flex-direction:column;gap:12px;min-height:250px}
.lvl .name{font-size:20px;font-weight:600;letter-spacing:-.02em}
.lvl .meta{font-size:13px;color:var(--ink-3)}
.lvl .steps{display:flex;flex-direction:column;gap:6px;font-size:13.5px;color:var(--ink-2);margin-top:auto}
.lvl .steps span::before{content:'';display:inline-block;width:8px;height:8px;border-radius:50%;border:1.5px solid var(--hair-2);margin-right:8px;vertical-align:1px}
.lvl .steps span.done::before{background:var(--lime);border-color:var(--lime)}
.lvl.locked{opacity:.6}
.lvl.certified{border-color:rgba(198,255,58,.45)}

/* lists */
.list{display:flex;flex-direction:column;border:1px solid var(--hair);border-radius:var(--r);overflow:hidden}
.list > .item{display:flex;align-items:center;gap:14px;padding:14px 16px;border-top:1px solid var(--hair);text-decoration:none;background:var(--surface)}
.list > .item:first-child{border-top:0}
.list > a.item:hover{background:var(--surface-2)}
.item .n{font-family:var(--mono);font-size:12px;color:var(--ink-3);width:28px;flex:0 0 auto}
.item .grow{flex:1;min-width:0}
.item .t{font-weight:500}
.item .s{font-size:13px;color:var(--ink-3)}
.tick{width:20px;height:20px;border-radius:50%;border:1.5px solid var(--hair-2);flex:0 0 auto;display:grid;place-items:center}
.tick.on{background:var(--lime);border-color:var(--lime)}
.tick.on::after{content:'';width:9px;height:5px;border-left:2px solid var(--lime-ink);border-bottom:2px solid var(--lime-ink);transform:rotate(-45deg) translate(1px,-1px)}

/* lesson */
.lesson{display:grid;grid-template-columns:1fr 280px;gap:28px;align-items:start}
@media (max-width:1100px){.lesson{grid-template-columns:1fr}}
.prose{font-size:16px;line-height:1.7;color:var(--ink)}
.prose h3{font-size:17px;margin:28px 0 8px}
.prose p{margin:0 0 14px}
.prose ul,.prose ol{margin:0 0 16px;padding-left:22px}
.prose li{margin:4px 0}
.prose strong{font-weight:600}
.prose code{font-family:var(--mono);font-size:.9em;background:var(--surface-2);padding:1px 5px;border-radius:4px}
.prose a{color:var(--lime)}
.outcome{border:1px solid var(--hair);border-radius:var(--r);padding:14px 16px;margin:0 0 24px;background:var(--surface)}
.outcome .k{font-family:var(--mono);font-size:10.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--lime);margin-bottom:4px}
.rules{position:sticky;top:24px}
.rules pre{white-space:pre-wrap;font-family:var(--sans);font-size:14px;line-height:1.55;margin:0;color:var(--ink-2)}

/* forms */
.field{display:flex;flex-direction:column;gap:6px;margin-bottom:18px}
.field > label{font-weight:500;font-size:14px}
.field .help{font-size:13px;color:var(--ink-3);margin-top:-2px}
input[type=text],input[type=email],input[type=number],select,textarea{width:100%;background:var(--bg-2);border:1px solid var(--hair-2);border-radius:8px;padding:10px 12px;font-size:15px}
textarea{min-height:96px;resize:vertical;line-height:1.55}
input:focus,select:focus,textarea:focus{outline:none;border-color:var(--lime)}
input[readonly],textarea[readonly]{background:var(--surface);color:var(--ink-2)}
.inline-form{display:flex;gap:10px;flex-wrap:wrap}
.inline-form > *{flex:1 1 180px}
.inline-form .btn{flex:0 0 auto}
.saved{font-size:12px;color:var(--ink-3);font-family:var(--mono)}

/* quiz */
.q{padding:18px 0;border-top:1px solid var(--hair)}
.q:first-child{border-top:0}
.q .qt{font-weight:500;margin-bottom:10px}
.opt{display:flex;gap:10px;align-items:flex-start;padding:9px 12px;border:1px solid var(--hair);border-radius:8px;margin-bottom:6px;cursor:pointer;font-size:14.5px}
.opt:hover{border-color:var(--hair-2)}
.opt input{margin-top:4px;accent-color:var(--lime)}
.opt.right{border-color:var(--good);background:rgba(143,224,162,.08)}
.opt.wrong{border-color:var(--bad);background:rgba(255,122,107,.08)}
.why{font-size:13.5px;color:var(--ink-2);margin-top:6px}

/* rubric */
.rub{width:100%;border-collapse:collapse;font-size:13.5px}
.rub th,.rub td{border-top:1px solid var(--hair);padding:10px 8px;text-align:left;vertical-align:top}
.rub th{font-family:var(--mono);font-size:10.5px;letter-spacing:.1em;text-transform:uppercase;color:var(--ink-3);font-weight:500}
.rub td.k{font-weight:500;width:150px}
.rub td.k span{display:block;font-weight:400;color:var(--ink-3);font-size:12.5px}
.rub label.pick{display:block;border:1px solid var(--hair);border-radius:8px;padding:8px;cursor:pointer;height:100%}
.rub label.pick:hover{border-color:var(--hair-2)}
.rub label.pick input{accent-color:var(--lime);margin-right:6px}
.rub label.pick.sel{border-color:var(--lime);background:var(--lime-dim)}
.score{font-family:var(--mono);font-weight:600}
.score.ok{color:var(--good)} .score.no{color:var(--bad)}
.table-wrap{overflow-x:auto;border:1px solid var(--hair);border-radius:var(--r)}
table.data{width:100%;border-collapse:collapse;font-size:13.5px;min-width:720px}
table.data th{font-family:var(--mono);font-size:10.5px;letter-spacing:.1em;text-transform:uppercase;color:var(--ink-3);font-weight:500;text-align:left;padding:10px 12px;background:var(--bg-2)}
table.data td{padding:11px 12px;border-top:1px solid var(--hair);vertical-align:middle}
table.data tr:hover td{background:rgba(255,255,255,.015)}
table.data select{padding:5px 8px;font-size:13px;width:auto}

.answer{white-space:pre-wrap;background:var(--bg-2);border:1px solid var(--hair);border-radius:8px;padding:12px 14px;font-size:14.5px;line-height:1.6}

/* sign-in / public */
.center{min-height:100vh;display:grid;place-items:center;padding:30px 18px}
.solo{width:min(440px,100%)}
.solo .brand{margin-bottom:30px}
.solo .brand svg{height:22px}

/* certificate */
.cert{background:#F6F5EF;color:#141413;border-radius:4px;padding:clamp(28px,6vw,64px);max-width:820px;margin:0 auto;position:relative;box-shadow:0 30px 80px rgba(0,0,0,.45)}
.cert .top{display:flex;justify-content:space-between;align-items:center;margin-bottom:clamp(30px,6vw,56px)}
.cert .top svg{height:26px;color:#141413}
.cert .k{font-family:var(--mono);font-size:11px;letter-spacing:.18em;text-transform:uppercase;color:#6b6b64}
.cert .lvl{font-size:clamp(40px,7vw,68px);font-weight:600;letter-spacing:-.04em;line-height:1;margin:10px 0 18px}
.cert .who{font-size:clamp(20px,3vw,26px);font-weight:500;letter-spacing:-.01em}
.cert .org{color:#55554f;margin-top:4px}
.cert .facts{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:clamp(30px,6vw,56px);padding-top:18px;border-top:1px solid #d9d8cf}
.cert .facts b{display:block;font-family:var(--mono);font-size:10.5px;letter-spacing:.14em;text-transform:uppercase;color:#6b6b64;font-weight:500;margin-bottom:4px}
.cert .stamp{position:absolute;top:clamp(28px,6vw,64px);right:clamp(28px,6vw,64px)}
.cert .status{font-family:var(--mono);font-size:11px;letter-spacing:.12em;text-transform:uppercase;padding:5px 10px;border-radius:20px;border:1.5px solid}
.cert .status.valid{color:#3f7d12;border-color:#7fae12}
.cert .status.expired{color:#9a6a00;border-color:#d8a52f}
.cert .status.revoked{color:#b03a2e;border-color:#e06b5f}
@media print{
  body{background:#fff} .noprint{display:none!important} .cert{box-shadow:none;max-width:none}
}
.toast{position:fixed;left:50%;bottom:26px;transform:translateX(-50%);background:var(--ink);color:var(--bg);padding:10px 16px;border-radius:999px;font-size:14px;z-index:100;box-shadow:0 10px 30px rgba(0,0,0,.4)}
.empty{padding:28px;text-align:center;color:var(--ink-3);border:1px dashed var(--hair-2);border-radius:var(--r)}
.spin{display:inline-block;width:14px;height:14px;border:2px solid var(--hair-2);border-top-color:var(--lime);border-radius:50%;animation:sp .7s linear infinite}
@keyframes sp{to{transform:rotate(360deg)}}
details.more summary{cursor:pointer;color:var(--ink-2);font-size:14px}
details.more[open] summary{margin-bottom:10px}
.editor-mod{border:1px solid var(--hair);border-radius:var(--r);padding:14px;margin-bottom:12px;background:var(--bg-2)}
@media (max-width:1100px){.lesson .rules{order:-1;position:static}}

.lvideo{margin:0 0 22px;border:1px solid var(--hair);border-radius:16px;overflow:hidden;background:#000;aspect-ratio:16/9}
.lvideo video{display:block;width:100%;height:100%}

.item .n svg{display:block}
@media (max-width:640px){
  .list > .item{flex-wrap:wrap;column-gap:12px;row-gap:8px;padding:16px 14px}
  .list > .item > .grow{flex:1 1 55%}
  .item .n{width:20px;align-self:flex-start;padding-top:3px}
  .item .tick{order:2;align-self:flex-start;margin-top:2px}
  .item .meta{order:3;flex-basis:100%;padding-left:32px}
  .item .t{line-height:1.3}
  .item .s{margin-top:3px;line-height:1.45}
}
@media (max-width:640px){
  table.data th:first-child,table.data td:first-child{position:sticky;left:0;z-index:1;background:var(--surface);box-shadow:1px 0 0 var(--hair)}
  table.data th:first-child{background:var(--bg-2)}
}