:root{
  --bg:#0b0f16; --bg2:#0e1420; --card:#131b28; --card2:#172232;
  --text:#e7eef7; --muted:#93a3b8; --border:#233246; --accent:#4f8cff; --accent2:#38bdf8;
  --ok:#3ecf8e; --warn:#f3c969; --danger:#ff6b81;
  --shadow:0 10px 40px rgba(0,0,0,.45); --ring:0 0 0 1px rgba(79,140,255,.35);
}
:root[data-theme="light"]{
  --bg:#f6f8fc; --bg2:#eef2f8; --card:#ffffff; --card2:#f4f7fb; --text:#131a24;
  --muted:#5a6675; --border:#e2e8f2; --accent:#2563eb; --accent2:#0ea5e9;
  --shadow:0 10px 34px rgba(20,40,80,.10);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--text);line-height:1.65;
  font-family:'Segoe UI',system-ui,-apple-system,Roboto,Inter,Arial,sans-serif;
  -webkit-font-smoothing:antialiased}
a{color:var(--accent);text-decoration:none}
.wrap{max-width:1120px;margin:0 auto;padding:0 22px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;
  letter-spacing:.06em;text-transform:uppercase;color:var(--accent2);
  background:color-mix(in srgb,var(--accent) 14%,transparent);
  border:1px solid color-mix(in srgb,var(--accent) 30%,transparent);
  padding:6px 14px;border-radius:999px}
/* NAV */
nav{position:sticky;top:0;z-index:30;background:color-mix(in srgb,var(--bg) 82%,transparent);
  backdrop-filter:blur(10px);border-bottom:1px solid var(--border)}
.nav-in{display:flex;align-items:center;gap:18px;height:64px}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:17px}
.brand img{width:28px;height:28px}
.nav-links{margin-left:auto;display:flex;gap:24px;align-items:center}
.nav-links a{color:var(--muted);font-weight:500;font-size:15px}
.nav-links a:hover{color:var(--text)}
.nav-cta{background:var(--accent);color:#fff !important;padding:9px 18px;border-radius:9px;font-weight:600}
.nav-cta:hover{filter:brightness(1.08)}
.toggle{cursor:pointer;border:1px solid var(--border);background:var(--card);border-radius:8px;
  padding:7px 10px;font-size:13px;color:var(--muted)}
@media(max-width:820px){.nav-links a:not(.nav-cta){display:none}}
/* HERO */
.hero{position:relative;overflow:hidden;padding:86px 0 64px;
  background:radial-gradient(900px 380px at 15% -40px,color-mix(in srgb,var(--accent) 20%,transparent),transparent),
             radial-gradient(700px 340px at 90% 10%,color-mix(in srgb,var(--accent2) 16%,transparent),transparent)}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center}
@media(max-width:900px){.hero-grid{grid-template-columns:1fr;gap:36px}}
.hero h1{font-size:clamp(32px,5.2vw,52px);line-height:1.08;margin:20px 0 16px;letter-spacing:-.02em}
.hero h1 .g{background:linear-gradient(90deg,var(--accent),var(--accent2));-webkit-background-clip:text;background-clip:text;color:transparent}
.hero p.lead{font-size:19px;color:var(--muted);max-width:560px;margin:0 0 28px}
.btns{display:flex;gap:12px;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;gap:9px;border-radius:11px;padding:13px 24px;
  font-weight:600;font-size:16px;cursor:pointer;border:1px solid transparent;transition:.15s}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{filter:brightness(1.08);transform:translateY(-1px)}
.btn-ghost{background:transparent;color:var(--text);border-color:var(--border)}
.btn-ghost:hover{border-color:var(--accent)}
.chips{display:flex;gap:10px;flex-wrap:wrap;margin-top:26px}
.chip{display:inline-flex;align-items:center;gap:7px;font-size:14px;color:var(--muted);
  background:var(--card);border:1px solid var(--border);border-radius:999px;padding:7px 14px}
.chip b{color:var(--ok)}
/* HERO MOCKUP */
.mock{background:var(--card);border:1px solid var(--border);border-radius:16px;box-shadow:var(--shadow);overflow:hidden}
.mock-bar{display:flex;align-items:center;gap:8px;padding:11px 14px;background:var(--card2);border-bottom:1px solid var(--border)}
.mock-bar .d{width:11px;height:11px;border-radius:50%}
.mock-bar .t{margin-left:8px;font-size:13px;color:var(--muted)}
.mock-body{padding:18px 20px;font-family:Consolas,monospace;font-size:13.5px}
.mock-line{height:9px;border-radius:5px;background:color-mix(in srgb,var(--muted) 30%,transparent);margin:10px 0}
.mock-line.s{width:70%}.mock-line.m{width:88%}.mock-line.l{width:96%}
.mock-secret{color:var(--accent2);background:color-mix(in srgb,var(--accent) 12%,transparent);
  border-left:3px solid var(--accent);padding:6px 10px;border-radius:4px;margin:12px 0}
.mock-foot{display:flex;align-items:center;gap:8px;padding:12px 20px;border-top:1px solid var(--border);
  font-size:13px;color:var(--ok)}
/* STATS */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-top:56px}
@media(max-width:760px){.stats{grid-template-columns:repeat(2,1fr)}}
.stat{background:var(--card);border:1px solid var(--border);border-radius:14px;padding:20px}
.stat .v{font-size:26px;font-weight:800;letter-spacing:-.02em;
  background:linear-gradient(90deg,var(--accent),var(--accent2));-webkit-background-clip:text;background-clip:text;color:transparent}
.stat .l{color:var(--muted);font-size:14px;margin-top:4px}
/* SECTIONS */
section{padding:72px 0}
.sec-alt{background:var(--bg2)}
.sec-head{max-width:720px;margin-bottom:40px}
h2{font-size:clamp(26px,3.4vw,36px);margin:14px 0 10px;letter-spacing:-.02em}
.sub{color:var(--muted);font-size:17px;margin:0}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:18px}
.card{background:var(--card);border:1px solid var(--border);border-radius:15px;padding:24px;transition:.15s}
.card:hover{border-color:color-mix(in srgb,var(--accent) 45%,var(--border));transform:translateY(-2px)}
.card .ic{font-size:24px;margin-bottom:10px}
.card h3{margin:0 0 7px;font-size:17px}
.card p{margin:0;color:var(--muted);font-size:14.5px}
/* STEPS */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;counter-reset:st}
@media(max-width:820px){.steps{grid-template-columns:repeat(2,1fr)}}
@media(max-width:480px){.steps{grid-template-columns:1fr}}
.stp{counter-increment:st}
.stp .n{font-size:14px;font-weight:800;color:var(--accent2);letter-spacing:.1em}
.stp .n:before{content:"0" counter(st)}
.stp h3{margin:10px 0 6px;font-size:17px}
.stp p{margin:0;color:var(--muted);font-size:14.5px}
/* SECURITY */
.two{display:grid;grid-template-columns:1fr 1fr;gap:24px}
@media(max-width:820px){.two{grid-template-columns:1fr}}
.klist{list-style:none;padding:0;margin:0}
.klist li{padding:9px 0 9px 30px;position:relative}
.klist li:before{content:"\2713";position:absolute;left:0;color:var(--ok);font-weight:800}
.note{background:color-mix(in srgb,var(--warn) 12%,var(--card));border:1px solid color-mix(in srgb,var(--warn) 40%,var(--border));
  border-radius:14px;padding:20px 22px}
.note b{color:var(--warn)}
/* DOWNLOAD */
.dlcard{display:grid;grid-template-columns:1.1fr .9fr;gap:0;background:var(--card);
  border:1px solid var(--border);border-radius:18px;overflow:hidden;box-shadow:var(--shadow)}
@media(max-width:760px){.dlcard{grid-template-columns:1fr}}
.dl-left{padding:34px}
.dl-right{padding:34px;background:var(--card2);border-left:1px solid var(--border);text-align:center}
@media(max-width:760px){.dl-right{border-left:0;border-top:1px solid var(--border)}}
.dl-size{font-size:40px;font-weight:800;letter-spacing:-.02em}
.dl-name{color:var(--muted);font-size:14px;margin-top:2px}
.dl input{width:100%;padding:13px 15px;border:1px solid var(--border);border-radius:11px;
  font-size:16px;background:var(--bg);color:var(--text);margin:16px 0 12px}
.dl .msg{min-height:22px;font-size:14px;margin-top:8px}
.msg.err{color:var(--danger)}.msg.ok{color:var(--ok)}
.pill{display:inline-flex;gap:7px;align-items:center;background:var(--bg);border:1px solid var(--border);
  border-radius:999px;padding:7px 14px;font-size:13px;color:var(--muted);margin:4px 6px 4px 0}
/* ABOUT / AUTHOR */
.authorcard{display:flex;gap:16px;align-items:center;background:var(--card);border:1px solid var(--border);
  border-radius:14px;padding:20px;margin-top:24px}
.avatar{width:52px;height:52px;border-radius:12px;background:linear-gradient(135deg,var(--accent),var(--accent2));
  display:flex;align-items:center;justify-content:center;font-weight:800;color:#fff;font-size:18px}
.copyright{color:var(--muted);font-size:14px;margin-top:20px;padding:18px 20px;background:var(--card2);
  border:1px solid var(--border);border-radius:12px}
/* FAQ */
details{background:var(--card);border:1px solid var(--border);border-radius:12px;padding:2px 20px;margin-bottom:10px}
summary{cursor:pointer;font-weight:600;padding:14px 0;list-style:none}
summary::-webkit-details-marker{display:none}
summary:before{content:"+";float:right;color:var(--accent);font-weight:700}
details[open] summary:before{content:"\2212"}
details p{color:var(--muted);margin:0 0 14px}
/* FOOTER */
footer{border-top:1px solid var(--border);background:var(--bg2);padding:48px 0 30px;color:var(--muted);font-size:14.5px}
.foot-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:30px}
@media(max-width:820px){.foot-grid{grid-template-columns:1fr 1fr}}
.foot-grid h5{color:var(--text);font-size:13px;text-transform:uppercase;letter-spacing:.06em;margin:0 0 12px}
.foot-grid a{display:block;color:var(--muted);margin-bottom:8px}
.foot-grid a:hover{color:var(--accent)}
.foot-bottom{border-top:1px solid var(--border);margin-top:34px;padding-top:22px;font-size:13.5px}
code,kbd{background:color-mix(in srgb,var(--accent) 14%,transparent);border:1px solid var(--border);
  border-radius:6px;padding:2px 7px;font-family:Consolas,monospace;font-size:14px}
pre{background:var(--card);border:1px solid var(--border);border-radius:10px;padding:14px 16px;overflow:auto}
.tocard{background:var(--card);border:1px solid var(--border);border-radius:14px;padding:24px}
.ta{width:100%;min-height:120px;padding:12px;border:1px solid var(--border);border-radius:10px;background:var(--bg);color:var(--text);font-family:Consolas,monospace;font-size:14px}
.insteps{counter-reset:s;list-style:none;padding:0;margin:0}
.insteps>li{counter-increment:s;position:relative;padding:16px 0 16px 54px;border-bottom:1px solid var(--border)}
.insteps>li:last-child{border-bottom:0}
.insteps>li:before{content:counter(s);position:absolute;left:0;top:14px;width:36px;height:36px;
  background:linear-gradient(135deg,var(--accent),var(--accent2));color:#fff;border-radius:10px;
  display:flex;align-items:center;justify-content:center;font-weight:800}
.insteps h3{margin:0 0 4px;font-size:17px}.insteps p{margin:0;color:var(--muted)}