:root{
  --bg:#14152a;--bg2:#1b1d3a;--surface:rgba(32,34,58,0.55);--surface-solid:#1f2140;
  --text:#f3ecff;--text-dim:#b3a6cf;--pink:#ff8fc7;--purple:#b98bff;--blue:#7ec8ff;
  --green:#7dffc0;--yellow:#ffd88f;--red:#ff8f8f;
  --border:rgba(255,255,255,0.09);--radius:22px;--radius-sm:14px;
  --shadow:0 10px 34px rgba(0,0,0,0.42);--blur:blur(22px);
  --font-title:'Nunito',sans-serif;--font-body:'Inter',sans-serif;--font-mono:'JetBrains Mono',monospace;
}
[data-theme="light"]{
  --bg:#f6f1ff;--bg2:#eee6ff;--surface:rgba(255,255,255,0.65);--surface-solid:#ffffff;
  --text:#241a3d;--text-dim:#6c5c8f;--pink:#e0559c;--purple:#7c4fd6;--blue:#3f8fd6;
  --green:#2fae82;--yellow:#c98f1f;--red:#d6544f;--border:rgba(0,0,0,0.08);
  --shadow:0 10px 30px rgba(80,50,120,0.12);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  background: radial-gradient(1100px 600px at 10% -10%, rgba(255,143,199,0.08), transparent 60%),
             radial-gradient(900px 650px at 100% 0%, rgba(185,139,255,0.08), transparent 55%),
             var(--bg);
  color:var(--text);font-family:var(--font-body);line-height:1.7;
  overflow-x:hidden;min-height:100vh;transition:background .4s,color .4s
}
a{color:var(--pink)}
code{font-family:var(--font-mono);background:rgba(255,255,255,0.07);padding:2px 7px;border-radius:6px;font-size:.92em}
::selection{background:var(--pink);color:#1a1b2f}
canvas#bgCanvas{position:fixed;inset:0;z-index:0;pointer-events:none}
.progress-track{position:fixed;top:0;left:0;right:0;height:3px;z-index:200;background:rgba(255,255,255,.05)}
.progress-fill{height:100%;width:0;background:linear-gradient(90deg,var(--pink),var(--purple));transition:width .1s linear}
header{
  position:fixed;top:3px;left:0;right:0;z-index:100;
  background:rgba(20,21,42,.68);backdrop-filter:blur(20px);border-bottom:1px solid var(--border)
}
[data-theme="light"] header{background:rgba(255,255,255,.68)}
nav{max-width:1180px;margin:0 auto;height:62px;padding:0 24px;display:flex;justify-content:space-between;align-items:center;gap:16px}
.logo{font-family:var(--font-title);font-weight:800;font-size:19px;background:linear-gradient(135deg,var(--pink),var(--purple));-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.back-link{display:inline-flex;align-items:center;gap:6px;text-decoration:none;color:var(--text-dim);font-weight:600;font-size:14px;transition:color .2s}
.back-link:hover{color:var(--pink)}
.theme-btn{background:none;border:1px solid var(--border);border-radius:20px;padding:7px 14px;color:var(--text-dim);cursor:pointer;font-family:var(--font-body);font-size:13px;font-weight:600;transition:border-color .2s,color .2s}
.theme-btn:hover{border-color:var(--pink);color:var(--pink)}
.layout{max-width:1180px;margin:0 auto;padding:130px 24px 100px;display:grid;grid-template-columns:220px 1fr;gap:56px;position:relative;z-index:2}
.toc{position:sticky;top:100px;align-self:start}
.toc-title{font-family:var(--font-mono);font-size:11px;letter-spacing:2px;text-transform:uppercase;color:var(--purple);margin-bottom:14px}
.toc ul{list-style:none;display:flex;flex-direction:column;gap:2px;border-left:2px solid var(--border)}
.toc a{display:block;text-decoration:none;color:var(--text-dim);font-size:13px;padding:7px 0 7px 16px;border-left:2px solid transparent;margin-left:-2px;transition:color .2s,border-color .2s}
.toc a:hover{color:var(--text)}
.toc a.active{color:var(--pink);border-left-color:var(--pink);font-weight:600}
.content{max-width:760px}
.guide-badge{display:inline-flex;align-items:center;gap:8px;font-family:var(--font-mono);font-size:11.5px;letter-spacing:1px;color:var(--purple);background:rgba(185,139,255,.12);border:1px solid rgba(185,139,255,.3);border-radius:20px;padding:6px 14px;margin-bottom:20px}
h1{font-family:var(--font-title);font-weight:900;font-size:clamp(32px,5.5vw,50px);line-height:1.08;margin-bottom:18px;background:linear-gradient(135deg,var(--pink),var(--purple));-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.lead{font-size:16.5px;color:var(--text-dim);margin-bottom:28px;max-width:60ch}
.meta-row{display:flex;gap:24px;flex-wrap:wrap;margin-bottom:44px;font-family:var(--font-mono);font-size:12.5px;color:var(--text-dim)}
.meta-row span{display:flex;align-items:center;gap:6px}
.meta-row svg{width:14px;height:14px;stroke:var(--pink);stroke-width:2;fill:none}
h2{font-family:var(--font-title);font-size:26px;font-weight:800;margin:56px 0 18px;scroll-margin-top:100px;color:var(--text)}
h2 .step-index{color:var(--pink);font-family:var(--font-mono);font-size:15px;margin-right:10px}
p{margin-bottom:16px;color:var(--text-dim);font-size:15.5px}
strong{color:var(--text);font-weight:700}
.callout{display:flex;gap:14px;padding:18px 20px;border-radius:var(--radius-sm);margin-bottom:22px;border:1px solid var(--border);background:var(--surface);backdrop-filter:var(--blur)}
.callout .ic{flex-shrink:0;width:34px;height:34px;border-radius:10px;display:flex;align-items:center;justify-content:center}
.callout .ic svg{width:18px;height:18px;stroke-width:2;fill:none}
.callout p{margin-bottom:0;color:var(--text);font-size:14.5px}
.callout.tip{border-left:3px solid var(--green)}
.callout.tip .ic{background:rgba(125,255,192,.14)}
.callout.tip .ic svg{stroke:var(--green)}
.callout.warn{border-left:3px solid var(--yellow)}
.callout.warn .ic{background:rgba(255,216,143,.14)}
.callout.warn .ic svg{stroke:var(--yellow)}
.callout.danger{border-left:3px solid var(--red)}
.callout.danger .ic{background:rgba(255,143,143,.14)}
.callout.danger .ic svg{stroke:var(--red)}
.step{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:26px 26px 22px;backdrop-filter:var(--blur);box-shadow:var(--shadow);margin-bottom:20px;position:relative;overflow:hidden}
.step::before{content:"";position:absolute;top:-50%;left:-50%;width:200%;height:200%;background:linear-gradient(45deg,transparent 40%,rgba(255,255,255,.045) 50%,transparent 60%);animation:glareSweep 9s linear infinite;pointer-events:none}
@keyframes glareSweep{0%{transform:translateX(-100%) translateY(-100%)}100%{transform:translateX(100%) translateY(100%)}}
.step h4{font-family:var(--font-title);font-size:18.5px;margin-bottom:10px;color:var(--text);position:relative;z-index:1;display:flex;align-items:center;gap:10px}
.step h4 .num{flex-shrink:0;width:26px;height:26px;border-radius:50%;background:linear-gradient(135deg,var(--pink),var(--purple));color:#1a1225;font-family:var(--font-mono);font-size:12px;font-weight:700;display:flex;align-items:center;justify-content:center}
.step p{position:relative;z-index:1;margin-bottom:12px}
.step p:last-child{margin-bottom:0}
.code-block{position:relative;margin-bottom:14px}
.code-block pre{background:#0f1023;border:1px solid var(--border);border-radius:12px;padding:16px 18px;overflow-x:auto;color:var(--green);font-size:13px;line-height:1.6}
[data-theme="light"] .code-block pre{background:#1c1533}
.copy-btn{position:absolute;top:8px;right:8px;background:rgba(255,255,255,.06);border:1px solid var(--border);border-radius:8px;padding:6px 10px;cursor:pointer;color:var(--text-dim);display:flex;align-items:center;gap:5px;font-family:var(--font-body);font-size:11.5px;transition:border-color .2s,color .2s}
.copy-btn:hover{border-color:var(--pink);color:var(--pink)}
.copy-btn svg{width:12px;height:12px;stroke:currentColor;stroke-width:2;fill:none}
.copy-btn.copied{color:var(--green);border-color:var(--green)}
.end-nav{display:flex;justify-content:space-between;align-items:center;margin-top:60px;padding-top:30px;border-top:1px solid var(--border);flex-wrap:wrap;gap:16px}
.end-nav a{display:inline-flex;align-items:center;gap:8px;text-decoration:none;background:linear-gradient(135deg,var(--pink),var(--purple));color:#1a1225;font-weight:800;padding:13px 24px;border-radius:26px;font-size:14.5px}
.end-nav .secondary{background:none;border:1.5px solid var(--border);color:var(--text)}
footer{text-align:center;padding:34px 24px;color:var(--text-dim);border-top:1px solid var(--border);font-size:13px;position:relative;z-index:2}
.dev-rampaga{font-size:12px;color:var(--pink);animation:devPulse 2s infinite;display:inline-block;margin-top:6px}
@keyframes devPulse{0%,100%{opacity:.6}50%{opacity:1;text-shadow:0 0 10px var(--pink)}}
@media(max-width:980px){.layout{grid-template-columns:1fr}.toc{display:none}}
@media(prefers-reduced-motion:reduce){*{animation-duration:.001ms!important;transition-duration:.001ms!important}canvas#bgCanvas{display:none}}