:root{--bg:#f7f9fc;--card:#fff;--text:#12202f;--muted:#5a6b7d;--line:#dde4ee;--accent:#0a7cff;--accent2:#00b8a9;--ok:#16a34a;--bad:#dc2626;--code:#eef2f8}
:root[data-theme=dark]{--bg:#0b1220;--card:#121c2e;--text:#e6edf6;--muted:#93a4b8;--line:#22314a;--accent:#4aa3ff;--accent2:#2dd4bf;--code:#0d1626}
@media(prefers-color-scheme:dark){:root:not([data-theme=light]){--bg:#0b1220;--card:#121c2e;--text:#e6edf6;--muted:#93a4b8;--line:#22314a;--accent:#4aa3ff;--accent2:#2dd4bf;--code:#0d1626}}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--text);font:16px/1.6 system-ui,-apple-system,Segoe UI,Roboto,sans-serif}
a{color:var(--accent)}
.wrap{max-width:1040px;margin:0 auto;padding:0 16px}
header.site{position:sticky;top:0;background:var(--card);border-bottom:1px solid var(--line);z-index:10}
header.site .wrap{display:flex;align-items:center;gap:12px;min-height:56px;flex-wrap:wrap}
.brand{font-weight:800;text-decoration:none;color:var(--text);font-size:18px}
.brand span{color:var(--accent)}
nav{display:flex;gap:4px;flex-wrap:wrap;margin-left:auto;align-items:center}
nav a{padding:6px 10px;border-radius:8px;text-decoration:none;color:var(--muted);font-size:14px}
nav a:hover,nav a.on{background:var(--code);color:var(--text)}
button,.btn{font:inherit;cursor:pointer;border:1px solid var(--line);background:var(--card);color:var(--text);padding:8px 14px;border-radius:8px;text-decoration:none;display:inline-block}
.btn.primary,button.primary{background:var(--accent);color:#fff;border-color:var(--accent)}
.hero{padding:48px 0 24px}
.hero h1{font-size:clamp(28px,5vw,44px);line-height:1.15;margin:0 0 12px}
.hero p{color:var(--muted);max-width:660px;font-size:18px}
h2{margin-top:36px}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:14px}
.card{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:16px}
.card h3{margin:0 0 6px;font-size:17px}.card p{margin:0;color:var(--muted);font-size:14px}
a.card{text-decoration:none;color:inherit}a.card:hover{border-color:var(--accent)}
.tag{display:inline-block;font-size:12px;padding:2px 8px;border-radius:99px;background:var(--code);color:var(--muted);margin-right:4px}
.tag.free{background:#16a34a22;color:var(--ok)}
.bar{height:10px;background:var(--code);border-radius:99px;overflow:hidden}
.bar>i{display:block;height:100%;background:linear-gradient(90deg,var(--accent),var(--accent2));width:0;transition:width .3s}
.week{margin:14px 0}.week label{display:flex;gap:8px;padding:4px 0}
input[type=text],input[type=search],select{font:inherit;padding:9px 12px;border-radius:8px;border:1px solid var(--line);background:var(--card);color:var(--text)}
.row{display:flex;gap:10px;flex-wrap:wrap;margin:12px 0}
pre,code{background:var(--code);border-radius:6px;font-family:ui-monospace,Menlo,Consolas,monospace}
code{padding:1px 5px}pre{padding:12px;overflow:auto;margin:6px 0}
table{border-collapse:collapse;width:100%;font-size:14px}th,td{border-bottom:1px solid var(--line);padding:8px;text-align:left}
.dom{display:flex;align-items:center;gap:10px;margin:8px 0}.dom b{width:230px;max-width:45%}.dom .bar{flex:1;height:18px}
.opt{display:block;width:100%;text-align:left;margin:6px 0}.opt.right{border-color:var(--ok);background:#16a34a22}.opt.wrong{border-color:var(--bad);background:#dc262622}
.bin span.n{color:var(--accent)}.bin span.h{color:var(--accent2)}
.cmd{display:flex;justify-content:space-between;gap:10px;align-items:flex-start}
.note{font-size:13px;color:var(--muted)}
footer{margin-top:60px;border-top:1px solid var(--line);padding:24px 0;color:var(--muted);font-size:13px}
[hidden]{display:none!important}

:root{--c1:#7c3aed;--c2:#0a7cff;--c3:#00b8a9;--c4:#f59e0b;--c5:#ef4444;--c6:#ec4899;--grad:linear-gradient(135deg,#7c3aed,#0a7cff 55%,#00b8a9)}
[hidden]{display:none!important}
body{background-image:radial-gradient(900px 400px at 10% -5%,#7c3aed26,transparent),radial-gradient(800px 400px at 95% 0,#00b8a926,transparent);background-repeat:no-repeat}
header.site{background:color-mix(in srgb,var(--card) 80%,transparent);backdrop-filter:blur(10px)}
.brand span{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
nav a.on{background:var(--grad);color:#fff}
.btn.primary,button.primary{background:var(--grad);border:0;box-shadow:0 6px 18px #0a7cff44;font-weight:600}
.btn,button{transition:transform .15s,box-shadow .15s}.btn:hover,button:hover{transform:translateY(-2px)}
@keyframes flow{0%{background-position:0% 50%}50%{background-position:100% 50%}100%{background-position:0% 50%}}
@keyframes floaty{0%,100%{transform:translateY(0)}50%{transform:translateY(-14px)}}
@keyframes rise{from{opacity:0;transform:translateY(22px)}to{opacity:1;transform:none}}
.hero.big{border-radius:24px;padding:56px 28px;margin-top:20px;background:linear-gradient(120deg,#7c3aed,#0a7cff,#00b8a9,#7c3aed);background-size:300% 300%;animation:flow 12s ease infinite;color:#fff;position:relative;overflow:hidden;box-shadow:0 20px 50px #0a7cff33}
.hero.big h1{font-size:clamp(30px,6vw,52px);letter-spacing:-.02em}.hero.big p{color:#ffffffdd}.hero.big>*{position:relative;z-index:1}
.hero.big .btn{background:#fff;color:#0b2a6b;border:0;font-weight:700}.hero.big .btn.ghost{background:#ffffff26;color:#fff}.hero.big .btn.cisco{background:#049fd9;color:#fff}
.hero.big .shape{position:absolute;border-radius:20px;background:#ffffff1c;animation:floaty 6s ease-in-out infinite;z-index:0}
.s1{width:70px;height:70px;right:14%;top:22%}.s2{width:44px;height:44px;right:30%;bottom:14%;animation-delay:1.5s;border-radius:50%!important}.s3{width:34px;height:34px;right:6%;bottom:30%;animation-delay:3s}
.pill{display:inline-block;background:#ffffff26;border-radius:99px;padding:4px 12px;font-size:13px;margin-bottom:14px}
.topbar{background:#0b1b3a;color:#dbe7ff;text-align:center;font-size:13px;padding:7px 12px}.topbar a{color:#7dd3fc;font-weight:700}
.card{box-shadow:0 2px 10px #0000000a;transition:transform .2s,box-shadow .2s,border-color .2s}
a.card:hover{transform:translateY(-4px);box-shadow:0 12px 28px #0a7cff22}
.view:not([hidden]) .card,.view:not([hidden]) .cta{animation:rise .5s ease both}
.ico{width:44px;height:44px;border-radius:12px;display:grid;place-items:center;font-size:22px;margin-bottom:10px;color:#fff}
.stat{text-align:center;color:#fff;border:0}.stat h3{font-size:34px!important;margin:0}.stat p{color:#ffffffe6!important}
.card.top{border-top:4px solid var(--cc,var(--c2))}
.step{position:relative;padding-left:60px}.step b.n{position:absolute;left:14px;top:14px;width:34px;height:34px;border-radius:50%;background:var(--grad);color:#fff;display:grid;place-items:center}
.dom .bar>i{background:var(--cc,var(--c2))}.bar{height:12px}
details.card summary{cursor:pointer}details.card{border-left:4px solid var(--cc,var(--c2))}.week{border-left:4px solid var(--cc,var(--c2))}
.cta{border-radius:20px;background:var(--grad);color:#fff;padding:32px;text-align:center;margin-top:40px}.cta .btn{background:#fff;color:#0b2a6b;border:0;font-weight:700}
.faq details{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:12px 16px;margin:8px 0}.faq summary{cursor:pointer;font-weight:600}
h2{font-size:26px}h2:after{content:"";display:block;width:56px;height:4px;border-radius:4px;background:var(--grad);margin-top:6px}
.official{border-radius:22px;padding:28px;background:linear-gradient(135deg,#0b1b3a,#0a3d7a);color:#fff;margin-top:36px;box-shadow:0 16px 40px #0a3d7a44}
.official h2{margin-top:0;color:#fff}.official h2:after{background:#049fd9}.official>p{color:#cfe1ff}.official .grid{margin-top:16px}
.official a.ol{display:block;background:#ffffff12;border:1px solid #ffffff26;border-radius:14px;padding:14px 16px;color:#fff;text-decoration:none;transition:.2s}
.official a.ol:hover{background:#049fd9;transform:translateY(-3px)}.official a.ol b{display:block}.official a.ol span{font-size:13px;color:#cfe1ff}.official a.ol:hover span{color:#fff}
.official .bigl{display:inline-block;margin-top:18px;background:#049fd9;color:#fff;font-weight:700;padding:12px 22px;border-radius:12px;text-decoration:none}.official .bigl:hover{background:#fff;color:#0a3d7a}
nav a.ext{border:1px solid #049fd9;color:#049fd9}nav a.ext:hover{background:#049fd9;color:#fff}

.article{max-width:760px;margin:0 auto}.article p,.article li{font-size:17px;line-height:1.75}.article h1{font-size:clamp(28px,5vw,40px);line-height:1.2;margin:24px 0 8px}
.crumbs{font-size:13px;color:var(--muted);margin-top:24px}.crumbs a{color:var(--muted)}.meta{color:var(--muted);font-size:14px}
.lead{font-size:19px!important;color:var(--muted)}.article table{margin:14px 0}
.related{margin-top:40px}.toc{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:12px 18px}