:root{
  --bg:#0e1116; --surface:#161b22; --surface2:#1c232d; --border:#273140;
  --text:#e6edf3; --muted:#9aa7b4; --accent:#e63946; --accent2:#1e88e5;
  --l1:#2e7d32; --l2:#f9a825; --l3:#ef6c00; --l4:#c62828;
  --radius:14px; --maxw:1080px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--text);
  font:16px/1.6 system-ui,-apple-system,Segoe UI,Roboto,sans-serif;-webkit-font-smoothing:antialiased}
a{color:var(--accent2);text-decoration:none}
a:hover{text-decoration:underline}
img,svg{max-width:100%}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 20px}

/* Header */
.site-header{position:sticky;top:0;z-index:20;background:rgba(14,17,22,.9);
  backdrop-filter:blur(8px);border-bottom:1px solid var(--border)}
.site-header .wrap{display:flex;align-items:center;gap:20px;height:60px}
.brand{font-weight:800;letter-spacing:.5px;font-size:1.15rem;color:var(--text)}
.brand span{color:var(--accent)}
.nav{display:flex;gap:18px;margin-left:auto;flex-wrap:wrap}
.nav a{color:var(--muted);font-weight:600;font-size:.95rem}
.nav a:hover{color:var(--text);text-decoration:none}

/* Safety banner */
.safety{background:linear-gradient(90deg,#3a1418,#2a1a0e);border:1px solid #5a2a2a;
  border-radius:var(--radius);padding:14px 18px;margin:22px 0;font-size:.95rem}
.safety strong{color:#ff8a80}

/* Hero */
.hero{padding:56px 0 26px;text-align:center}
.hero h1{font-size:2.5rem;margin:.2em 0;line-height:1.15}
.hero p{color:var(--muted);max-width:640px;margin:0 auto 1.4em;font-size:1.1rem}
.btn{display:inline-block;background:var(--accent);color:#fff;font-weight:700;
  padding:12px 22px;border-radius:999px;border:0;cursor:pointer;font-size:1rem}
.btn:hover{filter:brightness(1.1);text-decoration:none}
.btn.secondary{background:transparent;border:1px solid var(--border);color:var(--text)}

/* Cards / grids */
.grid{display:grid;gap:16px;grid-template-columns:repeat(auto-fill,minmax(240px,1fr))}
.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);
  padding:18px;transition:transform .15s,border-color .15s}
.card:hover{transform:translateY(-3px);border-color:var(--accent2)}
.card h3{margin:.1em 0 .3em}
.card p{color:var(--muted);font-size:.92rem;margin:.2em 0}
.card a{color:var(--text)}
.section-title{margin:34px 0 6px;font-size:1.5rem}
.section-sub{color:var(--muted);margin:0 0 12px}

/* Badges */
.badge{display:inline-block;font-size:.74rem;font-weight:800;letter-spacing:.4px;
  padding:3px 9px;border-radius:999px;color:#fff;vertical-align:middle}
.badge.l1{background:var(--l1)}.badge.l2{background:var(--l2);color:#241a00}
.badge.l3{background:var(--l3)}.badge.l4{background:var(--l4)}
.tag{display:inline-block;font-size:.78rem;background:var(--surface2);border:1px solid var(--border);
  color:var(--muted);padding:3px 10px;border-radius:999px;margin:2px 4px 2px 0}

/* Technique page */
.tech-head{display:flex;flex-wrap:wrap;gap:10px;align-items:center;margin:20px 0 4px}
.tech-head h1{margin:0;font-size:1.9rem;flex:1 1 300px}
.attack-box{background:var(--surface);border-left:4px solid var(--accent);
  border-radius:8px;padding:14px 16px;margin:14px 0}
.deesc{background:#0f2417;border:1px solid #1f5133;border-radius:8px;padding:12px 16px;margin:14px 0}
.deesc strong{color:#7fe0a0}

/* Media tabs */
.tabs{display:flex;gap:8px;margin:24px 0 0;border-bottom:1px solid var(--border);flex-wrap:wrap}
.tabs button{background:none;border:0;color:var(--muted);font-weight:700;font-size:1rem;
  padding:10px 14px;cursor:pointer;border-bottom:3px solid transparent}
.tabs button.active{color:var(--text);border-bottom-color:var(--accent)}
.tabs button:disabled{opacity:.4;cursor:not-allowed}
.tabpane{display:none;padding:20px 0}
.tabpane.active{display:block}
.drawings{display:grid;gap:16px;grid-template-columns:repeat(auto-fill,minmax(260px,1fr))}
.drawings figure{margin:0;background:#fff;border-radius:10px;padding:8px}
.drawings figcaption{color:#333;font-size:.85rem;padding:6px 4px 2px;text-align:center}
.placeholder{background:var(--surface);border:1px dashed var(--border);border-radius:10px;
  padding:40px 20px;text-align:center;color:var(--muted)}
.media-sub{margin:22px 0 8px;font-size:1.05rem;color:var(--muted);font-weight:700}
.tabpane .media-sub:first-child{margin-top:6px}

/* Steps */
ol.steps{list-style:none;padding:0;counter-reset:s}
ol.steps li{counter-increment:s;position:relative;padding:12px 12px 12px 52px;margin:8px 0;
  background:var(--surface);border:1px solid var(--border);border-radius:10px}
ol.steps li::before{content:counter(s);position:absolute;left:12px;top:12px;width:28px;height:28px;
  background:var(--accent);color:#fff;border-radius:50%;display:grid;place-items:center;font-weight:800}
.mistakes li{color:var(--muted)}

/* 3D viewer */
.viewer3d{background:var(--surface);border:1px solid var(--border);border-radius:12px;padding:14px}
.da-canvas{width:100%;min-height:340px;border-radius:10px;overflow:hidden;background:#0e1116}
.da-canvas canvas{display:block;width:100%!important;height:auto!important}
.da-fallback{padding:40px;text-align:center;color:var(--muted)}
.da-controls{display:flex;flex-wrap:wrap;gap:10px;align-items:center;margin-top:12px}
.da-cams{display:flex;gap:6px;flex-wrap:wrap}
.da-cams button{background:var(--surface2);border:1px solid var(--border);color:var(--muted);
  padding:6px 12px;border-radius:999px;cursor:pointer;font-weight:600;font-size:.85rem}
.da-cams button.active{background:var(--accent2);color:#fff;border-color:var(--accent2)}
#da-play{background:var(--accent);border:0;color:#fff;padding:7px 14px;border-radius:8px;cursor:pointer;font-weight:700}
#da-scrub{flex:1 1 160px;min-width:120px}
#da-step{color:var(--muted);font-size:.9rem;flex-basis:100%}
.hint{color:var(--muted);font-size:.82rem;margin-top:8px}

/* Search */
#search{width:100%;padding:12px 16px;font-size:1rem;background:var(--surface);
  border:1px solid var(--border);border-radius:10px;color:var(--text);margin:10px 0 18px}
.filters{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:16px}
.filters select{background:var(--surface);border:1px solid var(--border);color:var(--text);
  padding:8px 12px;border-radius:8px}

/* Disclaimer modal */
.modal-overlay{position:fixed;inset:0;background:rgba(0,0,0,.8);z-index:100;
  display:flex;align-items:center;justify-content:center;padding:20px}
.modal{background:var(--surface);border:1px solid var(--border);border-radius:16px;
  max-width:560px;padding:28px}
.modal h2{margin-top:0}
.modal ul{color:var(--muted);padding-left:20px}
.modal .btn{margin-top:14px}

/* Footer */
.site-footer{border-top:1px solid var(--border);margin-top:60px;padding:30px 0;color:var(--muted);font-size:.9rem}
.site-footer .wrap{display:flex;flex-wrap:wrap;gap:14px;justify-content:space-between}

@media (max-width:600px){ .hero h1{font-size:1.9rem} .site-header .wrap{height:auto;padding:10px 20px;flex-wrap:wrap} }