:root{
  --bg:#050816;--panel:#0b1126;--panel-2:#101a38;--line:#1d2a55;
  --text:#e6f1ff;--muted:#9fb3d1;--cyan:#00e5ff;--magenta:#ff2d95;--amber:#ffd166;
  --radius:14px;
}
@media (prefers-color-scheme: light){
  :root:not([data-theme="dark"]){--bg:#f4f7ff;--panel:#ffffff;--panel-2:#eef2ff;--line:#d5def5;--text:#0b1126;--muted:#4a5a7a;--cyan:#0097b3;--magenta:#c2185b;--amber:#9a6700}
}
:root[data-theme="dark"]{--bg:#050816;--panel:#0b1126;--panel-2:#101a38;--line:#1d2a55;--text:#e6f1ff;--muted:#9fb3d1;--cyan:#00e5ff;--magenta:#ff2d95;--amber:#ffd166}

*{box-sizing:border-box}
html,body{margin:0}
body{background:var(--bg);color:var(--text);font-family:Inter,system-ui,-apple-system,"Segoe UI",sans-serif;line-height:1.6;font-size:16px;min-height:100vh}
h1,h2,h3{font-family:Orbitron,Inter,sans-serif;line-height:1.2;letter-spacing:.02em}
h1{font-size:clamp(1.8rem,5vw,3rem);margin:.2em 0 .4em}
h2{font-size:clamp(1.3rem,3vw,1.9rem);margin:0 0 .6em}
h3{font-size:1.05rem;margin:0 0 .4em;color:var(--cyan)}
a{color:var(--cyan)}
img{max-width:100%;height:auto}
code,pre{font-family:"JetBrains Mono",Consolas,monospace}
code{background:var(--panel-2);padding:.1em .4em;border-radius:6px;font-size:.92em}
.wrap{max-width:1080px;margin:0 auto;padding:0 16px}
section{padding:48px 0}
.glow{background:linear-gradient(90deg,var(--cyan),var(--magenta));-webkit-background-clip:text;background-clip:text;color:transparent}

header.site{position:sticky;top:0;z-index:10;background:color-mix(in srgb,var(--bg) 88%,transparent);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
header.site .wrap{display:flex;align-items:center;justify-content:space-between;gap:12px;min-height:64px;flex-wrap:wrap}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--text);font-family:Orbitron,sans-serif;font-weight:700}
.brand img{height:38px;width:auto}
nav.main{display:flex;gap:6px;flex-wrap:wrap}
nav.main a{color:var(--muted);text-decoration:none;padding:8px 12px;border-radius:999px;font-size:.92rem}
nav.main a:hover,nav.main a[aria-current="page"]{color:var(--text);background:var(--panel-2)}

.hero{padding:56px 0 32px;text-align:center}
.hero img.logo{width:min(520px,90%);margin:0 auto 12px;display:block;filter:drop-shadow(0 0 24px rgba(0,229,255,.25))}
.hero p.lead{color:var(--muted);max-width:720px;margin:0 auto 24px;font-size:1.08rem}
.btns{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}
.btn{display:inline-block;padding:12px 20px;border-radius:999px;text-decoration:none;font-weight:600;border:1px solid var(--cyan);color:var(--cyan)}
.btn.primary{background:linear-gradient(90deg,var(--cyan),var(--magenta));color:#050816;border:none}
.btn:hover{filter:brightness(1.15)}

.grid{display:grid;gap:16px;grid-template-columns:repeat(auto-fit,minmax(240px,1fr))}
.card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:20px}
.card p{margin:.3em 0;color:var(--muted)}
.tag{display:inline-block;font-size:.75rem;padding:3px 10px;border-radius:999px;border:1px solid var(--magenta);color:var(--magenta);margin-bottom:8px}
.tag.cyan{border-color:var(--cyan);color:var(--cyan)}
.tag.amber{border-color:var(--amber);color:var(--amber)}

.notice{border:1px solid var(--amber);background:color-mix(in srgb,var(--amber) 10%,transparent);border-radius:var(--radius);padding:14px 18px;color:var(--text);font-size:.95rem}
.steps{counter-reset:s;list-style:none;padding:0;margin:0}
.steps li{counter-increment:s;position:relative;padding:14px 14px 14px 56px;margin-bottom:12px;background:var(--panel);border:1px solid var(--line);border-radius:var(--radius)}
.steps li::before{content:counter(s);position:absolute;left:14px;top:14px;width:30px;height:30px;border-radius:50%;background:linear-gradient(135deg,var(--cyan),var(--magenta));color:#050816;font-weight:700;display:flex;align-items:center;justify-content:center}

table{width:100%;border-collapse:collapse;background:var(--panel);border-radius:var(--radius);overflow:hidden;font-size:.95rem}
th,td{text-align:left;padding:10px 12px;border-bottom:1px solid var(--line);vertical-align:top}
th{color:var(--cyan);font-family:Orbitron,sans-serif;font-size:.8rem;letter-spacing:.05em;background:var(--panel-2)}
.table-wrap{overflow-x:auto}

.attack{scroll-margin-top:90px}
.attack h3 .q{color:var(--muted);font-weight:400;font-family:Inter,sans-serif;font-size:.9rem}
.attack dl{margin:0;display:grid;gap:10px}
.attack dt{font-weight:600;color:var(--text)}
.attack dd{margin:0 0 6px 0;color:var(--muted)}
ul.clean{padding-left:20px;color:var(--muted)}

footer.site{border-top:1px solid var(--line);padding:28px 0;color:var(--muted);font-size:.9rem;margin-top:24px}
footer.site .wrap{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap}

@media (max-width:640px){
  section{padding:36px 0}
  header.site .wrap{padding-top:8px;padding-bottom:8px}
  nav.main a{padding:6px 10px;font-size:.85rem}
}

/* ---- additions: accessibility, progress, modules, glossary ---- */
.tag.magenta{border-color:var(--magenta);color:var(--magenta)}
.skip{position:absolute;left:-9999px;top:8px;background:var(--cyan);color:#050816;padding:8px 12px;border-radius:8px;z-index:20;font-weight:600}
.skip:focus{left:16px}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;border-radius:4px}
[hidden]{display:none !important}

.progress-box{margin-top:20px;background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:16px 18px}
.progress-head{display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap;margin-bottom:10px}
.bar{height:12px;background:var(--panel-2);border-radius:999px;overflow:hidden;border:1px solid var(--line)}
.bar span{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--cyan),var(--magenta));transition:width .3s ease}
.link-btn{background:none;border:1px solid var(--line);color:var(--muted);padding:6px 12px;border-radius:999px;cursor:pointer;font:inherit;font-size:.85rem}
.link-btn:hover{color:var(--text);border-color:var(--cyan)}
.fine{color:var(--muted);font-size:.85rem;margin:8px 0 0}
.label{font-family:Orbitron,sans-serif;font-size:.75rem;letter-spacing:.08em;color:var(--cyan);text-transform:uppercase;margin:16px 0 6px}

.module{margin-bottom:18px;scroll-margin-top:90px}
ul.tasks{list-style:none;padding:0;margin:0 0 8px}
ul.tasks li{margin:0 0 8px}
ul.tasks label{display:flex;gap:10px;align-items:flex-start;cursor:pointer;color:var(--text)}
ul.tasks input[type=checkbox]{margin-top:5px;width:18px;height:18px;accent-color:var(--cyan);flex:none}
ul.tasks input:checked + *,ul.tasks input:checked ~ *{color:var(--muted);text-decoration:line-through}

details.check{margin-top:14px;border-top:1px dashed var(--line);padding-top:10px}
details.check summary{cursor:pointer;color:var(--cyan);font-weight:600;list-style:none}
details.check summary::-webkit-details-marker{display:none}
details.check summary::before{content:"+ ";font-family:"JetBrains Mono",monospace}
details.check[open] summary::before{content:"- "}
details.check ol{color:var(--muted);padding-left:20px;margin:10px 0 0}
details.check li{margin-bottom:10px}
.ans{display:block;margin-top:4px;color:var(--text);border-left:2px solid var(--magenta);padding-left:10px}

.search{display:block;margin-top:18px}
.search input{width:100%;max-width:520px;padding:12px 14px;border-radius:999px;border:1px solid var(--line);background:var(--panel);color:var(--text);font:inherit}
.search input:focus{border-color:var(--cyan);outline:none;box-shadow:0 0 0 3px color-mix(in srgb,var(--cyan) 25%,transparent)}
.glossary{margin:0;display:grid;gap:12px;grid-template-columns:repeat(auto-fit,minmax(280px,1fr))}
.glossary .term{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:14px 16px}
.glossary dt{font-weight:600;color:var(--cyan);margin-bottom:4px}
.glossary dd{margin:0;color:var(--muted)}

.faq details{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:14px 18px;margin-bottom:10px}
.faq summary{cursor:pointer;font-weight:600;list-style:none}
.faq summary::-webkit-details-marker{display:none}
.faq details p{color:var(--muted);margin:10px 0 0}

@media (prefers-reduced-motion: reduce){
  *{transition:none !important;scroll-behavior:auto !important}
}