:root {
    --bg:#080d16;
    --panel:#101827;
    --panel2:#151f31;
    --border:#263449;
    --text:#f4f7fb;
    --muted:#9eacc0;
    --accent:#f7931a;
    --green:#2bc875;
    --red:#f05d68;
    --shadow:0 18px 50px rgba(0,0,0,.28);
}

* {
    box-sizing:border-box;
}

html {
    scroll-behavior:smooth;
}

body {
    margin:0;
    font-family:Inter,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
    background:
        radial-gradient(circle at 15% -10%,rgba(247,147,26,.13),transparent 32rem),
        var(--bg);
    color:var(--text);
    line-height:1.6;
}

a {
    color:inherit;
}

.wrap {
    width:min(1180px,calc(100% - 36px));
    margin:auto;
}

header {
    border-bottom:1px solid var(--border);
    background:rgba(8,13,22,.88);
    backdrop-filter:blur(14px);
    position:sticky;
    top:0;
    z-index:20;
}

nav {
    min-height:70px;
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:25px;
}

.logo {
    font-weight:800;
    font-size:20px;
    text-decoration:none;
}

.logo span {
    color:var(--accent);
}

.navlinks {
    display:flex;
    gap:20px;
    align-items:center;
    flex-wrap:wrap;
}

.navlinks a {
    text-decoration:none;
    color:var(--muted);
}

.navlinks a:hover {
    color:var(--text);
}

.lang {
    border:1px solid var(--border);
    border-radius:10px;
    padding:6px 10px;
}

.hero {
    padding:90px 0 65px;
}

.badge {
    display:inline-flex;
    align-items:center;
    gap:8px;
    border:1px solid var(--border);
    border-radius:999px;
    padding:7px 13px;
    color:var(--muted);
    background:rgba(16,24,39,.65);
}

.dot {
    width:9px;
    height:9px;
    border-radius:50%;
    background:var(--green);
    box-shadow:0 0 14px var(--green);
}

h1 {
    max-width:900px;
    font-size:clamp(42px,7vw,78px);
    line-height:1.02;
    letter-spacing:-.04em;
    margin:24px 0;
}

.hero p {
    max-width:780px;
    color:var(--muted);
    font-size:18px;
}

.connection {
    margin-top:30px;
    padding:22px;
    border:1px solid var(--border);
    border-radius:16px;
    background:var(--panel);
    box-shadow:var(--shadow);
}

.connection strong {
    display:block;
    color:var(--muted);
    font-size:13px;
    text-transform:uppercase;
    letter-spacing:.08em;
    margin-bottom:7px;
}

.code {
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:16px;
    font-family:ui-monospace,SFMono-Regular,Menlo,monospace;
    overflow-wrap:anywhere;
    color:#fff;
}

button {
    border:1px solid var(--border);
    background:var(--panel2);
    color:var(--text);
    padding:9px 13px;
    border-radius:9px;
    cursor:pointer;
}

section {
    padding:55px 0;
}

.section-title {
    font-size:34px;
    margin:0 0 12px;
}

.section-intro {
    color:var(--muted);
    max-width:800px;
    margin-bottom:28px;
}

.grid {
    display:grid;
    grid-template-columns:repeat(4,1fr);
    gap:16px;
}

.card {
    border:1px solid var(--border);
    border-radius:16px;
    background:var(--panel);
    padding:22px;
    box-shadow:var(--shadow);
}

.card .label {
    display:block;
    color:var(--muted);
    font-size:13px;
    margin-bottom:8px;
}

.card .value {
    display:block;
    font-size:24px;
    font-weight:750;
    overflow-wrap:anywhere;
}

.online {
    color:var(--green);
}

.offline {
    color:var(--red);
}

.chart-card {
    margin-top:16px;
}

canvas {
    display:block;
    width:100%;
    height:260px;
}

.steps {
    display:grid;
    grid-template-columns:repeat(3,1fr);
    gap:16px;
}

.step {
    border:1px solid var(--border);
    background:var(--panel);
    padding:25px;
    border-radius:16px;
}

.num {
    display:inline-grid;
    place-items:center;
    width:35px;
    height:35px;
    border-radius:10px;
    background:rgba(247,147,26,.15);
    color:var(--accent);
    font-weight:800;
}

pre {
    white-space:pre-wrap;
    overflow-wrap:anywhere;
    background:#070b12;
    padding:16px;
    border-radius:12px;
    border:1px solid var(--border);
}

.faq {
    border-top:1px solid var(--border);
    padding:20px 0;
}

.faq h3 {
    margin-bottom:8px;
}

.faq p {
    color:var(--muted);
}

.notice {
    border-left:3px solid var(--accent);
    padding:15px 18px;
    background:rgba(247,147,26,.08);
    color:var(--muted);
}

footer {
    margin-top:50px;
    border-top:1px solid var(--border);
    padding:35px 0;
    color:var(--muted);
}

@media(max-width:900px) {
    .grid {
        grid-template-columns:repeat(2,1fr);
    }

    .steps {
        grid-template-columns:1fr;
    }
}

@media(max-width:600px) {
    .grid {
        grid-template-columns:1fr;
    }

    .navlinks a:not(.lang) {
        display:none;
    }

    .hero {
        padding-top:55px;
    }

    .code {
        align-items:flex-start;
        flex-direction:column;
    }
}