@import url('https://fonts.googleapis.com/css2?family=Chakra+Petch:wght@500;600;700&family=IBM+Plex+Mono:wght@400;500&family=Inter:wght@400;500;600;700&display=swap');
:root{
  --bp:#0F3B6E; --bp-deep:#0A2A50; --bp-ink:#071D38; --grid:#7FB2E5; --line:rgba(127,178,229,.22);
  --paper:#F4F1E8; --paper-2:#EAE5D6; --card:#FFFDF8; --ink:#16202E; --muted:#5A6577; --rule:#D8D1BE;
  --cta:#FF7A1A; --cta-edge:#C2540A; --ok:#2FA36B; --warn:#C98A00; --bad:#C2412D;
  --f-display:'Chakra Petch',system-ui,sans-serif; --f-body:'Inter',system-ui,sans-serif; --f-mono:'IBM Plex Mono',ui-monospace,monospace;
  --r:12px;
}
*{box-sizing:border-box}
html,body{margin:0}
body{font:16px/1.6 var(--f-body);color:var(--ink);background:var(--paper)}
a{color:var(--bp)}
img{max-width:100%;height:auto}
h1,h2,h3{font-family:var(--f-display);line-height:1.2;letter-spacing:.2px;color:var(--bp-ink)}
.mono{font-family:var(--f-mono)}

/* blueprint backdrop */
.bp-bg{background:
  linear-gradient(var(--line) 1px,transparent 1px) 0 0/28px 28px,
  linear-gradient(90deg,var(--line) 1px,transparent 1px) 0 0/28px 28px,
  radial-gradient(900px 500px at 15% 10%,#164a86 0%,transparent 60%),
  linear-gradient(180deg,var(--bp),var(--bp-deep));color:#fff}

/* auth screens */
.auth{min-height:100vh;display:grid;place-items:center;padding:32px 16px}
.auth-card{width:100%;max-width:420px;background:var(--card);color:var(--ink);border-radius:16px;padding:32px 28px;box-shadow:0 30px 60px -30px rgba(0,0,0,.55),0 0 0 1px rgba(255,255,255,.06)}
.brand{display:flex;align-items:center;gap:10px;font:700 15px/1 var(--f-display);letter-spacing:1.2px;text-transform:uppercase;color:#fff;text-decoration:none}
.brand .mk{display:inline-grid;place-items:center;width:30px;height:30px;border:1.5px solid var(--grid);border-radius:6px;font:600 12px var(--f-mono);color:var(--grid)}
.auth .brand{justify-content:center;margin-bottom:22px}
.auth-card h1{font-size:26px;margin:0 0 6px}
.auth-card p.sub{margin:0 0 22px;color:var(--muted);font-size:15px}
label{display:block;font-weight:600;font-size:14px;margin:14px 0 6px}
input{width:100%;font:16px var(--f-body);padding:12px 14px;border:1.5px solid var(--rule);border-radius:10px;background:#fff;color:var(--ink)}
input:focus{outline:none;border-color:var(--bp);box-shadow:0 0 0 3px rgba(15,59,110,.15)}
.hint{font-size:13px;color:var(--muted);margin-top:5px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font:700 16px/1 var(--f-display);letter-spacing:.4px;border:0;border-radius:10px;padding:14px 20px;cursor:pointer;text-decoration:none;min-height:48px}
.btn-cta{background:var(--cta);color:#fff;box-shadow:0 4px 0 var(--cta-edge)}
.btn-cta:active{transform:translateY(3px);box-shadow:0 1px 0 var(--cta-edge)}
.btn-cta[disabled]{opacity:.6;cursor:wait}
.btn-ghost{background:transparent;color:var(--bp);border:1.5px solid var(--rule)}
.btn-sm{min-height:36px;padding:8px 12px;font-size:14px}
.btn-ok{background:var(--ok);color:#fff}
.btn-bad{background:transparent;color:var(--bad);border:1.5px solid #e6c2bb}
.full{width:100%;margin-top:22px}
.msg{margin-top:14px;font-size:14px;padding:10px 12px;border-radius:8px;display:none}
.msg.err{display:block;background:#fbebe8;color:#8a2a1b}
.msg.ok{display:block;background:#e5f4e4;color:#1d5e36}
.alt{margin-top:18px;text-align:center;font-size:14px;color:var(--muted)}

/* app shell */
.top{position:sticky;top:0;z-index:10}
.top-in{max-width:1100px;margin:0 auto;display:flex;align-items:center;gap:18px;padding:14px 20px}
.nav{display:flex;gap:4px;margin-left:auto;flex-wrap:wrap}
.nav a{color:#dbe9f8;text-decoration:none;font:600 14px var(--f-display);letter-spacing:.5px;padding:8px 12px;border-radius:8px}
.nav a.on,.nav a:hover{background:rgba(255,255,255,.1);color:#fff}
.who{color:#b9d1ea;font-size:13px;display:flex;align-items:center;gap:10px}
.who button{background:none;border:1px solid rgba(255,255,255,.25);color:#fff;border-radius:8px;padding:6px 10px;font:600 12px var(--f-body);cursor:pointer}
.hero{padding:34px 20px 70px}
.hero-in{max-width:1100px;margin:0 auto;padding:0 20px}
.hero h1{color:#fff;font-size:clamp(26px,3.6vw,38px);margin:0 0 6px}
.hero p{margin:0;color:#c6dbf0;max-width:62ch}
.wrap{max-width:1100px;margin:-44px auto 60px;padding:0 20px;position:relative}
.card{background:var(--card);border:1px solid var(--rule);border-radius:16px;padding:24px;box-shadow:0 18px 40px -30px rgba(7,29,56,.45)}
.card+.card{margin-top:20px}
.card h2{font-size:21px;margin:0 0 4px}
.card .lead{color:var(--muted);margin:0 0 18px;font-size:15px}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.tile{display:block;text-decoration:none;color:inherit;background:var(--card);border:1px solid var(--rule);border-radius:16px;padding:22px;position:relative;overflow:hidden;transition:transform .2s,box-shadow .2s}
.tile:hover{transform:translateY(-3px);box-shadow:0 20px 40px -26px rgba(7,29,56,.5)}
.tile .k{font:500 12px var(--f-mono);color:var(--cta-edge);letter-spacing:1px;text-transform:uppercase}
.tile h3{font-size:21px;margin:8px 0 6px}
.tile p{margin:0;color:var(--muted);font-size:15px}
.tile .go{margin-top:16px;font:700 14px var(--f-display);color:var(--bp)}

/* link builder */
.lb{display:grid;grid-template-columns:1.5fr 1fr auto;gap:12px;align-items:end}
.slugbox{display:flex;align-items:stretch;border:1.5px solid var(--rule);border-radius:10px;background:#fff;overflow:hidden}
.slugbox span{display:flex;align-items:center;padding:0 10px;background:var(--paper-2);color:var(--muted);font:14px var(--f-mono);white-space:nowrap}
.slugbox input{border:0;border-radius:0;padding-left:8px}
.slugbox:focus-within{border-color:var(--bp);box-shadow:0 0 0 3px rgba(15,59,110,.15)}
.preview{margin-top:12px;font:14px var(--f-mono);color:var(--muted)}
.preview b{color:var(--bp)}
table{width:100%;border-collapse:collapse;font-size:14px}
th,td{text-align:left;padding:12px 10px;border-bottom:1px solid var(--rule);vertical-align:middle}
th{font:600 12px var(--f-mono);text-transform:uppercase;letter-spacing:.8px;color:var(--muted)}
td.num{font:600 15px var(--f-mono);text-align:right}
th.num{text-align:right}
.short{font:500 14px var(--f-mono);color:var(--bp);word-break:break-all}
.dest{color:var(--muted);font-size:12px;word-break:break-all;max-width:320px}
.acts{display:flex;gap:6px;justify-content:flex-end;flex-wrap:wrap}
.empty{padding:22px;text-align:center;color:var(--muted);border:1.5px dashed var(--rule);border-radius:12px}
.pill{display:inline-block;font:600 11px var(--f-mono);letter-spacing:.6px;text-transform:uppercase;padding:4px 8px;border-radius:999px}
.pill.pending{background:#fbf1d6;color:#8a6200}.pill.active{background:#e5f4e4;color:#1d5e36}.pill.blocked{background:#fbebe8;color:#8a2a1b}.pill.admin{background:#e7f1fb;color:#0F3B6E}
.toast{position:fixed;left:50%;bottom:24px;transform:translateX(-50%) translateY(20px);background:var(--bp-ink);color:#fff;padding:12px 18px;border-radius:10px;font-size:14px;opacity:0;transition:.25s;pointer-events:none;z-index:50}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}
.hidden{display:none!important}
.tbl-wrap{overflow-x:auto}

/* course reader */
.reader{display:grid;grid-template-columns:260px 1fr;gap:28px;max-width:1180px;margin:0 auto;padding:28px 20px 80px}
.toc{position:sticky;top:76px;align-self:start;max-height:calc(100vh - 96px);overflow:auto;background:var(--card);border:1px solid var(--rule);border-radius:14px;padding:16px}
.toc b{display:block;font:600 12px var(--f-mono);letter-spacing:1px;text-transform:uppercase;color:var(--muted);margin-bottom:8px}
.toc a{display:block;text-decoration:none;color:var(--ink);font-size:14px;padding:7px 10px;border-radius:8px;line-height:1.35}
.toc a:hover,.toc a.on{background:var(--paper-2);color:var(--bp)}
.doc{background:var(--card);border:1px solid var(--rule);border-radius:16px;padding:40px clamp(20px,5vw,56px);min-width:0}
.doc h1{font-size:clamp(28px,3.4vw,38px);margin:0 0 6px}
.doc h2{font-size:26px;margin:52px 0 12px;padding-top:24px;border-top:2px solid var(--paper-2)}
.doc h3{font-size:19px;margin:30px 0 8px}
.doc p,.doc li{max-width:72ch}
.doc img{display:block;border-radius:10px;border:1px solid var(--rule);margin:16px 0}
.doc figure{margin:20px 0}
.doc figcaption{font:13px var(--f-mono);color:var(--muted)}
.doc table{margin:16px 0;font-size:14px;display:block;overflow-x:auto}
.doc th{background:var(--paper-2)}
.doc code{font:14px var(--f-mono);background:var(--paper-2);padding:1px 5px;border-radius:4px}
.doc pre{background:var(--bp-ink);color:#e6f0fb;padding:16px;border-radius:10px;overflow:auto;font:13px/1.5 var(--f-mono)}
.doc pre code{background:none;padding:0;color:inherit}
.doc blockquote{margin:16px 0;padding:10px 16px;border-left:4px solid var(--cta);background:#fff6ee}
.doc ul li p,.doc ol li p{margin:4px 0}
.toc-btn{display:none}
.progress{position:fixed;top:0;left:0;height:3px;background:var(--cta);z-index:20;width:0}

@media (max-width:860px){
  .grid2{grid-template-columns:1fr}
  .lb{grid-template-columns:1fr}
  .reader{grid-template-columns:1fr}
  .toc{position:fixed;inset:112px 12px auto 12px;max-height:70vh;z-index:30;display:none;box-shadow:0 20px 40px -10px rgba(0,0,0,.35)}
  .toc.open{display:block}
  .toc-btn{display:inline-flex}
  .who .em{display:none}
  .top-in{flex-wrap:wrap;gap:10px}
  .nav{margin-left:0;order:3;width:100%}
  .doc{padding:24px 18px}
  th.hide-m,td.hide-m{display:none}
}
@media (prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important}}