:root{--bg:#000;--card:#111;--border:#222;--text:#e8e8e8;--muted:#888;--red:#ff0040;--cyan:#00d4ff;--green:#00ff88;--font:'Inter',system-ui,sans-serif}
*{box-sizing:border-box;margin:0;padding:0}
body{font-family:var(--font);background:var(--bg);color:var(--text);line-height:1.7;font-size:16px}
a{color:var(--cyan);text-decoration:none}
a:hover{text-decoration:underline}
nav{display:flex;align-items:center;justify-content:space-between;padding:16px 24px;border-bottom:1px solid var(--border);position:sticky;top:0;background:rgba(0,0,0,.92);backdrop-filter:blur(10px);z-index:100}
.nav-logo{font-family:'Courier New',monospace;font-weight:700;font-size:18px;color:var(--text);letter-spacing:1px}
.nav-logo span{color:var(--red)}
.nav-links{display:flex;gap:20px;align-items:center;font-size:14px}
.nav-links a{color:var(--muted)}
.nav-links a:hover{color:var(--text);text-decoration:none}
.btn-nav{background:var(--red);color:#fff!important;padding:7px 18px;border-radius:8px;font-weight:600}
.article-wrap{max-width:760px;margin:0 auto;padding:48px 24px 80px}
.article-tag{font-size:12px;color:var(--red);font-weight:700;letter-spacing:1px;text-transform:uppercase;margin-bottom:12px}
h1{font-size:clamp(26px,5vw,40px);font-weight:700;line-height:1.25;margin-bottom:16px;color:#fff}
.article-meta{font-size:13px;color:var(--muted);margin-bottom:40px;padding-bottom:24px;border-bottom:1px solid var(--border)}
h2{font-size:22px;font-weight:700;margin:40px 0 12px;color:#fff}
h3{font-size:17px;font-weight:600;margin:24px 0 8px;color:var(--cyan)}
p{margin-bottom:16px;color:#ccc}
ul,ol{margin:0 0 16px 24px;color:#ccc}
li{margin-bottom:6px}
strong{color:#fff}
.highlight{background:var(--card);border-left:3px solid var(--cyan);padding:16px 20px;border-radius:0 8px 8px 0;margin:20px 0}
.highlight p{margin:0;font-size:15px}
.step-block{background:var(--card);border:1px solid var(--border);border-radius:12px;padding:18px 22px;margin:10px 0}
.step-num{font-size:11px;font-weight:700;color:var(--red);letter-spacing:1px;text-transform:uppercase;margin-bottom:4px}
.step-block h3{margin:0 0 6px;font-size:15px;color:#fff}
.step-block p{margin:0;font-size:14px}
.os-section{margin:32px 0}
.os-title{font-size:13px;font-weight:700;color:var(--cyan);text-transform:uppercase;letter-spacing:.8px;margin-bottom:14px;padding-bottom:8px;border-bottom:1px solid var(--border)}
.cta-box{background:var(--card);border:1px solid var(--border);border-radius:16px;padding:32px;text-align:center;margin:48px 0}
.cta-box h2{margin:0 0 8px;font-size:22px}
.cta-box p{margin:0 0 20px;color:var(--muted)}
.btn-primary{display:inline-block;background:var(--red);color:#fff;padding:12px 32px;border-radius:10px;font-weight:700;font-size:15px;text-decoration:none}
.btn-primary:hover{opacity:.85;text-decoration:none}
.faq-item{border-bottom:1px solid var(--border);padding:16px 0}
.faq-item:last-child{border-bottom:none}
details summary{cursor:pointer;font-weight:600;font-size:15px;color:#fff;list-style:none;display:flex;justify-content:space-between;align-items:center;gap:12px}
details summary::-webkit-details-marker{display:none}
details summary::after{content:'+';font-size:20px;color:var(--muted);flex-shrink:0}
details[open] summary::after{content:'\2212'}
details .faq-body{padding:12px 0 4px;color:#bbb;font-size:14px}
.breadcrumb{font-size:13px;color:var(--muted);margin-bottom:24px}
.breadcrumb a{color:var(--muted)}
.breadcrumb a:hover{color:var(--text);text-decoration:none}
footer{border-top:1px solid var(--border);padding:28px 24px;text-align:center;font-size:13px;color:var(--muted)}
footer a{color:var(--muted);margin:0 10px}
footer a:hover{color:var(--text)}
table{width:100%;border-collapse:collapse;margin:20px 0;font-size:14px}
th{background:var(--card);padding:10px 14px;text-align:left;color:var(--cyan);font-weight:600;border:1px solid var(--border)}
td{padding:10px 14px;border:1px solid var(--border);color:#ccc}
tr:nth-child(even) td{background:rgba(255,255,255,.02)}
.yes{color:var(--green);font-weight:700}
.no{color:var(--red)}
@media(max-width:600px){.article-wrap{padding:28px 16px 60px}.nav-links a:not(.btn-nav){display:none}}