:root{
  --bg:#f5f7fa; --surface:#ffffff; --ink:#1a2233; --muted:#5b6677; --line:#e2e8f0;
  --navy:#0f2747; --navy2:#16345c; --accent:#1f6feb; --accent-d:#1657c0;
  --chip1:#e8f0fe; --chip1t:#1657c0; --chip3:#fef3e7; --chip3t:#9a5b08;
  --radius:14px; --maxw:1180px;
  --shadow:0 1px 2px rgba(16,32,64,.06),0 8px 24px rgba(16,32,64,.06);
  --font:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:var(--font);color:var(--ink);background:var(--bg);line-height:1.6;font-size:16px}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 22px}

/* Header */
.site-header{background:var(--navy);color:#fff;position:sticky;top:0;z-index:50;box-shadow:0 2px 10px rgba(0,0,0,.18)}
.site-header .wrap{display:flex;align-items:center;gap:26px;height:64px}
.brand{display:flex;align-items:center;gap:11px;color:#fff;font-weight:700;font-size:18px;white-space:nowrap}
.brand:hover{text-decoration:none}
.brand .logo{width:30px;height:30px;flex:none}
.brand .dom{color:#9fc1f5;font-weight:600}
.nav{display:flex;gap:4px;margin-left:auto;flex-wrap:wrap}
.nav a{color:#d6e2f5;padding:7px 11px;border-radius:8px;font-size:14.5px;font-weight:500}
.nav a:hover{background:rgba(255,255,255,.10);text-decoration:none;color:#fff}
.nav a.active{background:var(--accent);color:#fff}
.menu-btn{display:none}

/* Hero */
.hero{background:linear-gradient(160deg,var(--navy) 0%,var(--navy2) 55%,#1c4a85 100%);color:#fff;padding:64px 0 72px;position:relative;overflow:hidden}
.hero:after{content:"";position:absolute;right:-120px;top:-80px;width:420px;height:420px;border-radius:50%;background:radial-gradient(circle,rgba(63,131,248,.35),transparent 70%)}
.hero h1{font-size:40px;line-height:1.15;margin:0 0 16px;max-width:760px;font-weight:800;letter-spacing:-.5px}
.hero p.lead{font-size:18.5px;color:#cfe0f7;max-width:680px;margin:0 0 28px}
.hero .cta{display:flex;gap:14px;flex-wrap:wrap}
.btn{display:inline-block;background:var(--accent);color:#fff;padding:12px 22px;border-radius:10px;font-weight:600;border:1px solid transparent}
.btn:hover{background:var(--accent-d);text-decoration:none}
.btn.ghost{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.28)}
.btn.ghost:hover{background:rgba(255,255,255,.16)}
.kpis{display:flex;gap:34px;margin-top:40px;flex-wrap:wrap}
.kpi b{display:block;font-size:30px;font-weight:800;color:#fff}
.kpi span{color:#aecbf2;font-size:13.5px;text-transform:uppercase;letter-spacing:.6px}

/* Sections */
section.block{padding:56px 0}
.eyebrow{color:var(--accent);font-weight:700;font-size:13px;letter-spacing:1.2px;text-transform:uppercase;margin:0 0 8px}
h2.sec{font-size:28px;margin:0 0 10px;font-weight:800;letter-spacing:-.3px}
.sec-intro{color:var(--muted);max-width:720px;margin:0 0 30px}

/* Function cards grid */
.fn-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.fn-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow);display:block;color:var(--ink);position:relative;border-top:4px solid var(--c,#888);transition:transform .15s ease,box-shadow .15s ease}
.fn-card:hover{transform:translateY(-3px);box-shadow:0 10px 30px rgba(16,32,64,.12);text-decoration:none}
.fn-card .tag{display:inline-block;font-size:12px;font-weight:700;color:#fff;background:var(--c,#888);padding:3px 9px;border-radius:6px;letter-spacing:.5px}
.fn-card h3{margin:14px 0 4px;font-size:21px}
.fn-card .en{color:var(--muted);font-size:13.5px;font-weight:600;margin-bottom:8px}
.fn-card p{margin:0;color:var(--muted);font-size:14.5px}
.fn-card .more{margin-top:14px;color:var(--accent);font-weight:600;font-size:14px}

/* Page header */
.page-head{background:var(--surface);border-bottom:1px solid var(--line);padding:30px 0}
.breadcrumb{font-size:13.5px;color:var(--muted);margin-bottom:12px}
.breadcrumb a{color:var(--muted)}
.page-head .ftag{display:inline-block;font-size:13px;font-weight:700;color:#fff;padding:4px 12px;border-radius:7px;letter-spacing:.5px}
.page-head h1{margin:14px 0 8px;font-size:32px;font-weight:800;letter-spacing:-.4px}
.page-head p{margin:0;color:var(--muted);max-width:820px;font-size:16.5px}

/* Category + subcategory */
.cat{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);margin:22px 0;overflow:hidden}
.cat-head{padding:20px 24px;border-left:5px solid var(--c,#888);background:linear-gradient(90deg,rgba(0,0,0,.012),transparent)}
.cat-head .cid{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:13px;font-weight:700;color:var(--c,#555)}
.cat-head h3{margin:4px 0 6px;font-size:20px}
.cat-head p{margin:0;color:var(--muted);font-size:15px}
.sub{padding:18px 24px;border-top:1px solid var(--line)}
.sub:first-of-type{border-top:1px dashed var(--line)}
.sub .row{display:flex;align-items:baseline;gap:12px;flex-wrap:wrap}
.sid{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:13px;font-weight:700;background:#eef2f7;color:var(--navy);padding:2px 8px;border-radius:6px;white-space:nowrap}
.sub .de{font-weight:600;font-size:15.5px;margin:0;flex:1;min-width:240px}
.sub .en{color:var(--muted);font-size:13.5px;font-style:italic;margin:8px 0 0}
.chips{display:flex;gap:6px;flex-wrap:wrap;margin-top:2px}
.chip{font-size:11.5px;font-weight:700;padding:2px 9px;border-radius:20px;letter-spacing:.3px}
.chip.p1{background:var(--chip1);color:var(--chip1t)}
.chip.p3{background:var(--chip3);color:var(--chip3t)}
.ex{margin:12px 0 0;padding:12px 14px;background:#f8fafc;border:1px solid var(--line);border-radius:10px}
.ex summary{cursor:pointer;font-size:13.5px;font-weight:600;color:var(--navy)}
.ex ul{margin:10px 0 2px;padding-left:20px}
.ex li{font-size:13.5px;color:var(--muted);margin:4px 0}

/* Search */
.search-box{position:relative;max-width:640px;margin:0 0 6px}
.search-box input{width:100%;padding:14px 16px 14px 44px;font-size:16px;border:1px solid var(--line);border-radius:12px;background:var(--surface);box-shadow:var(--shadow);font-family:inherit}
.search-box input:focus{outline:2px solid var(--accent);border-color:transparent}
.search-box .ico{position:absolute;left:15px;top:50%;transform:translateY(-50%);color:var(--muted)}
.search-meta{color:var(--muted);font-size:13.5px;margin:10px 0 0}
#results{margin-top:22px;display:none}
.res{background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:14px 18px;margin:10px 0;box-shadow:var(--shadow)}
.res .row{display:flex;align-items:baseline;gap:10px;flex-wrap:wrap}
.res .de{font-weight:600;margin:6px 0 0}
.res .en{color:var(--muted);font-size:13px;font-style:italic;margin:4px 0 0}
.res .fnref{font-size:12px;color:var(--muted)}
mark{background:#fff3bf;padding:0 2px;border-radius:3px}

/* feature strip */
.features{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.feature{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow)}
.feature .fi{width:42px;height:42px;border-radius:10px;background:var(--chip1);color:var(--accent);display:flex;align-items:center;justify-content:center;margin-bottom:12px}
.feature h4{margin:0 0 6px;font-size:17px}
.feature p{margin:0;color:var(--muted);font-size:14px}

/* content (ueber/glossar) */
.prose{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:30px 34px;max-width:860px}
.prose h2{font-size:22px;margin:26px 0 10px}
.prose h2:first-child{margin-top:0}
.prose p{color:#36425a}
.prose ul{color:#36425a}
.gloss dt{font-weight:700;margin-top:16px}
.gloss dd{margin:4px 0 0;color:var(--muted)}
.callout{background:#fff8e6;border:1px solid #f3e2b3;border-radius:12px;padding:16px 18px;font-size:14px;color:#6b5618;margin:24px 0}

/* footer */
.site-footer{background:var(--navy);color:#c4d4ec;margin-top:50px;padding:40px 0 30px;font-size:14px}
.site-footer .cols{display:grid;grid-template-columns:2fr 1fr 1fr;gap:30px}
.site-footer h5{color:#fff;font-size:14px;margin:0 0 12px;letter-spacing:.4px}
.site-footer a{color:#c4d4ec;display:block;margin:6px 0}
.site-footer .legal{border-top:1px solid rgba(255,255,255,.12);margin-top:26px;padding-top:18px;color:#8aa3c6;font-size:12.5px}

@media(max-width:900px){
  .fn-grid,.features{grid-template-columns:1fr 1fr}
  .site-footer .cols{grid-template-columns:1fr 1fr}
  .hero h1{font-size:32px}
}
@media(max-width:640px){
  .fn-grid,.features,.site-footer .cols{grid-template-columns:1fr}
  .nav{display:none;position:absolute;top:64px;left:0;right:0;background:var(--navy);flex-direction:column;padding:10px 22px 18px;gap:2px}
  .nav.open{display:flex}
  .nav a{padding:11px 12px}
  .menu-btn{display:block;margin-left:auto;background:none;border:1px solid rgba(255,255,255,.3);color:#fff;border-radius:8px;padding:7px 11px;font-size:18px;cursor:pointer}
  .hero h1{font-size:27px}
}

/* ATT&CK */
.att-accent{--c:#9a2b2b}
.tac-domain{margin:34px 0 14px}
.tac-domain h3{font-size:18px;margin:0 0 4px;display:flex;align-items:center;gap:10px}
.tac-domain .cnt{color:var(--muted);font-weight:500;font-size:14px}
.tac-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.tac-card{background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:14px 15px;box-shadow:var(--shadow);border-top:3px solid #9a2b2b}
.tac-card .tid{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:12px;font-weight:700;color:#9a2b2b}
.tac-card h4{margin:5px 0 2px;font-size:15.5px}
.tac-card .en{color:var(--muted);font-size:12.5px;margin-bottom:6px}
.tac-card .tc{font-size:12px;color:var(--muted)}
.dom-badge{font-size:10.5px;font-weight:700;padding:2px 7px;border-radius:5px;letter-spacing:.3px;color:#fff;margin-left:2px}
.dom-badge.d-enterprise{background:#1f6feb}.dom-badge.d-mobile{background:#1a7f5a}.dom-badge.d-ics{background:#b8860b}
.filter-row{display:flex;gap:12px;flex-wrap:wrap;align-items:center;margin-bottom:6px}
.filter-row select{padding:11px 14px;border:1px solid var(--line);border-radius:10px;background:var(--surface);font-family:inherit;font-size:15px;box-shadow:var(--shadow)}
.maptable{width:100%;border-collapse:collapse;background:var(--surface);border:1px solid var(--line);border-radius:12px;overflow:hidden;box-shadow:var(--shadow)}
.maptable th,.maptable td{text-align:left;padding:12px 14px;border-bottom:1px solid var(--line);font-size:14.5px;vertical-align:top}
.maptable th{background:#f1f5fb;font-size:13px;letter-spacing:.3px}
.maptable tr:last-child td{border-bottom:none}
.maptable .fid{font-family:ui-monospace,Menlo,monospace;font-weight:700;color:var(--navy);white-space:nowrap}
@media(max-width:900px){.tac-grid{grid-template-columns:1fr 1fr}}
@media(max-width:640px){.tac-grid{grid-template-columns:1fr}}

/* Mitigations + mapping tags */
.csf-tag{display:inline-block;font-family:ui-monospace,Menlo,monospace;font-size:12px;font-weight:700;background:#e8f0fe;color:#1657c0;padding:2px 8px;border-radius:6px;margin:2px 4px 2px 0;text-decoration:none}
.csf-tag:hover{background:#1657c0;color:#fff;text-decoration:none}
.subnav{display:flex;gap:10px;flex-wrap:wrap;margin:0 0 6px}
.subnav a{background:#fff;border:1px solid var(--line);border-radius:9px;padding:8px 14px;font-weight:600;font-size:14px;color:var(--navy);box-shadow:var(--shadow)}
.subnav a:hover{background:var(--navy);color:#fff;text-decoration:none}
.checkbox{display:flex;align-items:center;gap:7px;font-size:14px;color:var(--muted)}