:root{
    --bg0:#070A12;
    --bg1:#0B1021;
    --card: rgba(255,255,255,.06);
    --card2: rgba(255,255,255,.04);
    --border: rgba(255,255,255,.10);
    --border2: rgba(255,255,255,.14);
    --text: rgba(255,255,255,.92);
    --muted: rgba(255,255,255,.65);
    --muted2: rgba(255,255,255,.45);
    --shadow: 0 18px 60px rgba(0,0,0,.55);
    --radius: 18px;
    --radius2: 22px;

    --gradA: linear-gradient(90deg, rgba(120,76,255,.95), rgba(53,130,255,.95));
    --gradB: linear-gradient(135deg, rgba(120,76,255,.25), rgba(53,130,255,.18), rgba(32,205,154,.14));
    --gradBg: radial-gradient(1200px 700px at 20% 10%, rgba(120,76,255,.35), transparent 60%),
            radial-gradient(1000px 650px at 80% 25%, rgba(32,205,154,.22), transparent 55%),
            radial-gradient(900px 600px at 55% 85%, rgba(53,130,255,.18), transparent 60%),
            linear-gradient(180deg, var(--bg1), var(--bg0));

    --ok: rgba(32,205,154,.95);
    --info: rgba(84,140,255,.95);
    --warn: rgba(255,192,72,.95);
    --err: rgba(255,96,122,.95);

    --mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
    --sans: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji","Segoe UI Emoji";
}

*{box-sizing:border-box}
html,body{height:100%}
body{
    margin:0;
    font-family: var(--sans);
    color: var(--text);
    background: var(--gradBg);
    overflow-x:hidden;
    background-repeat: no-repeat;
    background-size: 100%;
    background-position: center center;
    background-attachment: fixed;
}

/* subtle grain */
.grain{
    pointer-events:none;
    position:fixed; inset:0;
    background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='180' height='180' filter='url(%23n)' opacity='.22'/%3E%3C/svg%3E");
    mix-blend-mode:overlay;
    opacity:.18;
}

a{color:rgba(170,200,255,.95); text-decoration:none}
a:hover{text-decoration:underline}

.container{
    max-width: 1120px;
    margin: 0 auto;
    padding: 18px 18px 70px;
}

/* Topbar */
header{
    position:sticky;
    top:0;
    z-index:50;
    backdrop-filter: blur(16px);
    background: linear-gradient(180deg, rgba(7,10,18,.85), rgba(7,10,18,.55));
    border-bottom: 1px solid rgba(255,255,255,.06);
}
.topbar{
    max-width:1120px;
    margin:0 auto;
    padding: 14px 18px;
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:16px;
}
.brand{
    display:flex; align-items:center; gap:12px;
    min-width: 240px;
}
.logoMark{
    width:200px;
}
.logoMark img{
    max-width: 200px;
    height: auto;
    display: inline-block;
}

nav{
    display:flex; gap: 14px;
    align-items:center;
    color: var(--muted);
    font-weight: 600;
    font-size: 14px;
}
nav a{
    color: var(--muted);
    padding: 8px 10px;
    border-radius: 12px;
    border: 1px solid transparent;
}
nav a:hover{
    color: rgba(255,255,255,.86);
    background: rgba(255,255,255,.04);
    border-color: rgba(255,255,255,.08);
    text-decoration:none;
}
.right{
    display:flex; align-items:center; gap:10px;
    min-width: 240px;
    justify-content:flex-end;
}
.btn{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    gap:10px;
    padding: 10px 14px;
    border-radius: 14px;
    border: 1px solid rgba(255,255,255,.12);
    background: rgba(255,255,255,.05);
    color: rgba(255,255,255,.86);
    font-weight: 720;
    font-size: 13px;
    cursor:pointer;
    user-select:none;
    transition: transform .05s ease, background .15s ease, border-color .15s ease;
    white-space:nowrap;
}
.btn:hover{ background: rgba(255,255,255,.07); border-color: rgba(255,255,255,.16); }
.btn:active{ transform: translateY(1px); }
.btn.primary{
    background: var(--gradA);
    border-color: rgba(140,170,255,.35);
    box-shadow: 0 10px 30px rgba(90,120,255,.28);
}
.btn.primary:hover{ filter: brightness(1.02); }
.btn.ghost{
    background: rgba(255,255,255,.03);
}

/* Hero */
.hero{ padding: 26px 0 10px; }
.badge{
    display:inline-flex;
    align-items:center;
    gap:10px;
    padding: 8px 12px;
    border-radius: 999px;
    border: 1px solid rgba(255,255,255,.12);
    background: rgba(255,255,255,.04);
    color: rgba(210,225,255,.9);
    font-weight: 650;
    font-size: 13px;
}
.badge .dot{
    width:9px; height:9px; border-radius:50%;
    background: rgba(32,205,154,.95);
    box-shadow: 0 0 0 3px rgba(32,205,154,.14);
}
h1{
    margin: 14px 0 0;
    font-size: clamp(30px, 4.2vw, 54px);
    line-height: 1.06;
    letter-spacing: -0.02em;
    max-width: 16ch;
}
.sub{
    margin-top: 12px;
    color: var(--muted);
    font-size: 15px;
    line-height: 1.6;
    max-width: 68ch;
}
.heroActions{
    margin-top: 16px;
    display:flex;
    gap: 10px;
    flex-wrap:wrap;
}

/* Cards */
.grid{
    margin-top: 18px;
    display:grid;
    grid-template-columns: 1.1fr .9fr;
    gap: 18px;
    align-items:start;
}
.card{
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius2);
    box-shadow: var(--shadow);
    backdrop-filter: blur(18px);
    overflow:hidden;
    position:relative;
}
.card::before{
    content:"";
    position:absolute; inset:-1px;
    background: var(--gradB);
    opacity:.55;
    pointer-events:none;
    mask: linear-gradient(#000, #000) content-box, linear-gradient(#000, #000);
    -webkit-mask: linear-gradient(#000, #000) content-box, linear-gradient(#000, #000);
    padding: 1px;
    border-radius: inherit;
}
.cardInner{ position:relative; padding: 18px; }
.title{
    font-weight: 780;
    letter-spacing: -0.01em;
    font-size: 16px;
    margin: 0 0 6px;
    color: rgba(235,245,255,.92);
}
.hint{
    color: var(--muted);
    font-size: 13px;
    line-height: 1.5;
    margin: 0 0 14px;
}

/* Step list */
.steps{
    display:flex;
    flex-direction:column;
    gap: 10px;
    margin-top: 10px;
}
.step{
    background: rgba(255,255,255,.035);
    border: 1px solid rgba(255,255,255,.08);
    border-radius: 16px;
    padding: 12px;
    display:flex;
    gap: 12px;
    align-items:flex-start;
}
.num{
    width:28px; height:28px;
    border-radius: 12px;
    background: rgba(90,120,255,.18);
    border: 1px solid rgba(120,160,255,.28);
    display:grid; place-items:center;
    font-weight: 820;
    font-size: 13px;
    color: rgba(235,245,255,.92);
    flex:0 0 auto;
}
.step strong{
    display:block;
    font-size: 13px;
    margin-bottom: 4px;
    color: rgba(240,248,255,.92);
}
.step p{
    margin:0;
    color: var(--muted);
    font-size: 13px;
    line-height: 1.5;
}

/* Code + copy */
.codeRow{
    display:flex;
    gap: 10px;
    flex-wrap:wrap;
    align-items:center;
    margin-top: 12px;
}
code.inline{
    font-family: var(--mono);
    font-size: 12px;
    padding: 6px 8px;
    border-radius: 10px;
    background: rgba(0,0,0,.35);
    border: 1px solid rgba(255,255,255,.10);
    color: rgba(230,245,255,.92);
}
.copyBtn{
    padding: 8px 10px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 750;
    border: 1px solid rgba(255,255,255,.12);
    background: rgba(255,255,255,.04);
    color: rgba(255,255,255,.85);
    cursor:pointer;
}
.copyBtn:hover{ background: rgba(255,255,255,.06); }

/* FAQ */
.faq{
    margin-top: 18px;
    display:flex;
    flex-direction:column;
    gap: 10px;
}
details{
    border-radius: 16px;
    border: 1px solid rgba(255,255,255,.10);
    background: rgba(255,255,255,.035);
    overflow:hidden;
}
summary{
    list-style:none;
    cursor:pointer;
    padding: 14px 14px;
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap: 12px;
    font-weight: 780;
    color: rgba(235,245,255,.92);
    font-size: 13px;
}
summary::-webkit-details-marker{display:none}
.chev{
    width:30px; height:30px;
    border-radius: 12px;
    border: 1px solid rgba(255,255,255,.12);
    background: rgba(255,255,255,.04);
    display:grid; place-items:center;
    color: rgba(255,255,255,.8);
    flex: 0 0 auto;
    transition: transform .15s ease;
}
details[open] .chev{ transform: rotate(180deg); }
.answer{
    padding: 0 14px 14px;
    color: var(--muted);
    font-size: 13px;
    line-height: 1.6;
}
.answer ul{ margin: 10px 0 0 18px; color: var(--muted); }
.answer li{ margin: 6px 0; }

/* Side preview */
pre{
    margin:0;
    padding: 12px;
    border-radius: 16px;
    background: rgba(0,0,0,.35);
    border: 1px solid rgba(255,255,255,.10);
    color: rgba(230,245,255,.92);
    font-family: var(--mono);
    font-size: 12px;
    line-height: 1.55;
    overflow:auto;
    white-space:pre-wrap;
}

/* Toast */
.toastWrap{
    position: fixed;
    bottom: 16px;
    left: 16px;
    z-index: 200;
    display:flex;
    flex-direction:column;
    gap: 10px;
    pointer-events:none;
}
.toast{
    pointer-events:none;
    min-width: 260px;
    max-width: 420px;
    padding: 12px 12px;
    border-radius: 16px;
    border: 1px solid rgba(255,255,255,.12);
    background: rgba(12,14,24,.72);
    backdrop-filter: blur(12px);
    box-shadow: 0 14px 40px rgba(0,0,0,.55);
    display:flex;
    align-items:flex-start;
    gap: 10px;
    opacity: 0;
    transform: translateY(8px);
    animation: toastIn .18s ease forwards;
}
@keyframes toastIn{
    to{ opacity: 1; transform: translateY(0); }
}
.tDot{
    width:10px; height:10px; border-radius:50%;
    margin-top: 3px;
    background: rgba(255,255,255,.35);
    box-shadow: 0 0 0 3px rgba(255,255,255,.06);
    flex:0 0 auto;
}
.tDot.ok{ background: var(--ok); box-shadow: 0 0 0 3px rgba(32,205,154,.14); }
.tDot.warn{ background: var(--warn); box-shadow: 0 0 0 3px rgba(255,192,72,.14); }
.toast strong{ display:block; font-size: 13px; color: rgba(240,248,255,.92); }
.toast span{ display:block; margin-top: 3px; font-size: 12px; color: var(--muted); line-height: 1.45; }

/* Footer */
footer{
    margin-top: 22px;
    color: var(--muted2);
    font-size: 12px;
    line-height: 1.6;
}

@media (max-width: 980px){
    nav{ display:none; }
    .brand, .right{ min-width:auto; }
    .grid{ grid-template-columns: 1fr; }
    h1{ max-width: unset; }
}