*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
:root{
--bg:#000;--bg2:#0a0a0a;--bg3:#111;--bg4:#1a1a1a;--bg5:#222;
--fg:#ededed;--fg2:#a1a1a1;--fg3:#666;--fg4:#444;
--accent:#0070f3;--accent2:#0060df;--green:#50e3c2;--red:#ee0000;--yellow:#f5a623;--purple:#7928ca;--cyan:#79ffe1;
--border:#333;--border2:#222;
--font-mono:'SF Mono','Fira Code','Cascadia Code','JetBrains Mono',Consolas,monospace;
--font-sans:-apple-system,BlinkMacSystemFont,'Inter','Segoe UI',Roboto,sans-serif;
--radius:8px;--radius-lg:12px;--radius-xl:16px;
--shadow:0 25px 60px rgba(0,0,0,.5);
--max-w:1200px;--sidebar-w:260px;
}
html{scroll-behavior:smooth;font-size:16px}
body{background:var(--bg);color:var(--fg);font-family:var(--font-sans);line-height:1.7;overflow-x:hidden}
::selection{background:var(--accent);color:#fff}
a{color:var(--accent);text-decoration:none;transition:color .2s}
a:hover{color:var(--green)}
img{max-width:100%;display:block}

/* ── Animations ── */
@keyframes fadeUp{from{opacity:0;transform:translateY(30px)}to{opacity:1;transform:translateY(0)}}
@keyframes fadeIn{from{opacity:0}to{opacity:1}}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.5}}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-10px)}}
@keyframes gradientShift{0%{background-position:0% 50%}50%{background-position:100% 50%}100%{background-position:0% 50%}}
@keyframes glow{0%,100%{box-shadow:0 0 20px rgba(0,112,243,.3)}50%{box-shadow:0 0 40px rgba(0,112,243,.6)}}
.fade-up{opacity:0;animation:fadeUp .8s ease forwards}
.fd1{animation-delay:.1s}.fd2{animation-delay:.2s}.fd3{animation-delay:.3s}.fd4{animation-delay:.4s}.fd5{animation-delay:.5s}

/* ── Layout ── */
.container{max-width:var(--max-w);margin:0 auto;padding:0 24px}
.page-wrap{display:flex;min-height:100vh}
.page-content{flex:1;padding:80px 0 60px;max-width:960px;margin:0 auto}

/* ── Nav ── */
nav{position:fixed;top:0;left:0;right:0;z-index:100;padding:0 24px;height:64px;display:flex;align-items:center;background:rgba(0,0,0,.85);backdrop-filter:blur(20px);border-bottom:1px solid var(--border2)}
nav .nav-inner{max-width:var(--max-w);margin:0 auto;width:100%;display:flex;align-items:center;justify-content:space-between}
.nav-logo{display:flex;align-items:center;gap:10px;font-weight:700;font-size:18px;color:var(--fg);text-decoration:none}
.nav-logo svg{width:26px;height:26px}
.nav-links{display:flex;gap:4px;align-items:center}
.nav-links a{color:var(--fg2);font-size:14px;padding:8px 14px;border-radius:var(--radius);transition:all .15s;text-decoration:none}
.nav-links a:hover{color:var(--fg);background:var(--bg4)}
.nav-links a.active{color:var(--fg);background:var(--bg4)}
.nav-cta{background:var(--fg)!important;color:var(--bg)!important;font-weight:600}
.nav-cta:hover{background:#fff!important}
.mobile-toggle{display:none;background:none;border:none;color:var(--fg);font-size:24px;cursor:pointer;padding:8px}
@media(max-width:768px){
  .nav-links{display:none;position:absolute;top:64px;left:0;right:0;flex-direction:column;background:var(--bg2);border-bottom:1px solid var(--border2);padding:16px}
  .nav-links.open{display:flex}
  .nav-links a{padding:12px 16px;width:100%}
  .mobile-toggle{display:block}
}

/* ── Sidebar ── */
.sidebar{width:var(--sidebar-w);flex-shrink:0;border-right:1px solid var(--border2);padding:80px 0 40px 0;position:sticky;top:0;height:100vh;overflow-y:auto;background:var(--bg2)}
.sidebar-group{margin-bottom:24px;padding:0 20px}
.sidebar-label{font-size:11px;text-transform:uppercase;letter-spacing:1.5px;color:var(--fg3);font-weight:600;margin-bottom:8px;padding:0 12px}
.sidebar a{display:block;padding:7px 12px;font-size:14px;color:var(--fg2);border-radius:6px;transition:all .15s;text-decoration:none}
.sidebar a:hover{color:var(--fg);background:var(--bg4)}
.sidebar a.active{color:var(--fg);background:var(--bg4);font-weight:500}
.sidebar a.sub{padding-left:28px;font-size:13px;color:var(--fg3)}
.sidebar a.sub:hover,.sidebar a.sub.active{color:var(--fg2)}
@media(max-width:960px){.sidebar{display:none}}

/* ── Section Headers ── */
.section-label{font-size:12px;text-transform:uppercase;letter-spacing:2px;color:var(--accent);font-weight:600;margin-bottom:12px}
.section-title{font-size:clamp(28px,4vw,40px);font-weight:700;letter-spacing:-1px;margin-bottom:16px}
.section-desc{font-size:17px;color:var(--fg2);max-width:600px;line-height:1.7}
.section-header{margin-bottom:48px}

/* ── Hero ── */
.hero{padding:120px 0 80px;text-align:center;position:relative;overflow:hidden}
.hero::before{content:'';position:absolute;top:30%;left:50%;width:700px;height:700px;transform:translate(-50%,-50%);background:radial-gradient(circle,rgba(0,112,243,.12) 0%,transparent 70%);pointer-events:none;z-index:0}
.hero h1{font-size:clamp(44px,7vw,72px);font-weight:800;line-height:1.05;letter-spacing:-2px;margin-bottom:24px;background:linear-gradient(135deg,#fff 0%,#a1a1a1 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.hero .gradient{background:linear-gradient(135deg,var(--accent),var(--green),var(--purple));-webkit-background-clip:text;background-clip:text;animation:gradientShift 4s ease infinite;background-size:200% 200%}
.hero p{font-size:19px;color:var(--fg2);max-width:640px;margin:0 auto 40px;line-height:1.7}
.hero-buttons{display:flex;gap:16px;justify-content:center;flex-wrap:wrap}
.hero-badge{display:inline-flex;align-items:center;gap:8px;padding:6px 16px;border-radius:20px;border:1px solid var(--border);background:var(--bg3);font-size:13px;color:var(--fg2);margin-bottom:32px}
.hero-badge .dot{width:6px;height:6px;border-radius:50%;background:var(--green);animation:pulse 2s infinite}

/* ── Buttons ── */
.btn{display:inline-flex;align-items:center;gap:8px;padding:12px 24px;border-radius:var(--radius);font-size:15px;font-weight:500;transition:all .2s;cursor:pointer;border:none;font-family:inherit;text-decoration:none}
.btn-primary{background:var(--fg);color:var(--bg)}
.btn-primary:hover{background:#fff;transform:translateY(-2px);box-shadow:0 8px 30px rgba(255,255,255,.1);color:var(--bg)}
.btn-secondary{background:transparent;color:var(--fg);border:1px solid var(--border)}
.btn-secondary:hover{border-color:var(--fg);background:var(--bg4);color:var(--fg)}
.btn-large{padding:16px 32px;font-size:17px;border-radius:var(--radius-lg)}
.btn-sm{padding:8px 16px;font-size:13px}

/* ── Terminal ── */
.terminal{background:var(--bg2);border:1px solid var(--border);border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow);max-width:720px;margin:0 auto;text-align:left}
.terminal-header{display:flex;align-items:center;gap:8px;padding:12px 16px;background:var(--bg3);border-bottom:1px solid var(--border2)}
.terminal-dot{width:12px;height:12px;border-radius:50%}
.terminal-dot.r{background:#ff5f56}.terminal-dot.y{background:#ffbd2e}.terminal-dot.g{background:#27c93f}
.terminal-title{flex:1;text-align:center;font-size:13px;color:var(--fg3);font-family:var(--font-mono)}
.terminal-body{padding:20px;font-family:var(--font-mono);font-size:14px;line-height:1.8;min-height:180px;position:relative;overflow:hidden}
.terminal-body::after{content:'';position:absolute;inset:0;background:linear-gradient(180deg,transparent 60%,rgba(0,0,0,.3) 100%);pointer-events:none}
.t-prompt{color:var(--green)}.t-cmd{color:var(--fg)}.t-comment{color:var(--fg3)}.t-string{color:var(--yellow)}.t-keyword{color:var(--accent)}.t-number{color:var(--purple)}.t-output{color:var(--fg2)}.t-success{color:var(--green)}.t-error{color:var(--red)}

/* ── Feature Cards ── */
.feature-card{background:var(--bg2);border:1px solid var(--border2);border-radius:var(--radius-lg);padding:28px;transition:all .3s;position:relative;overflow:hidden}
.feature-card:hover{border-color:var(--border);transform:translateY(-4px);box-shadow:0 20px 40px rgba(0,0,0,.3)}
.feature-card::before{content:'';position:absolute;top:0;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent,var(--accent),transparent);opacity:0;transition:opacity .3s}
.feature-card:hover::before{opacity:1}
.feature-icon{width:44px;height:44px;border-radius:10px;display:flex;align-items:center;justify-content:center;font-size:22px;margin-bottom:16px;background:var(--bg4);border:1px solid var(--border2)}
.feature-card h3{font-size:16px;font-weight:600;margin-bottom:6px}
.feature-card p{font-size:14px;color:var(--fg2);line-height:1.6}

/* ── Code Blocks ── */
.code-block{background:var(--bg2);border:1px solid var(--border2);border-radius:var(--radius-lg);overflow:hidden;margin:16px 0}
.code-header{display:flex;align-items:center;justify-content:space-between;padding:10px 16px;background:var(--bg3);border-bottom:1px solid var(--border2)}
.code-header-title{font-size:13px;color:var(--fg2);font-family:var(--font-mono)}
.code-copy{padding:5px 10px;font-size:12px;color:var(--fg3);background:var(--bg4);border:1px solid var(--border2);border-radius:6px;cursor:pointer;transition:all .2s;font-family:var(--font-sans)}
.code-copy:hover{color:var(--fg);border-color:var(--border)}
.code-body{padding:20px;font-family:var(--font-mono);font-size:13.5px;line-height:1.8;overflow-x:auto;white-space:pre;tab-size:2}
.code-body .ln{color:var(--fg4);user-select:none;display:inline-block;width:28px;text-align:right;margin-right:16px}
.c-kw{color:var(--accent)}.c-str{color:var(--yellow)}.c-num{color:var(--purple)}.c-cmt{color:var(--fg3)}.c-fn{color:var(--green)}.c-op{color:var(--cyan)}

/* ── Command Blocks ── */
.cmd-block{background:var(--bg3);border:1px solid var(--border2);border-radius:var(--radius);padding:14px 18px;font-family:var(--font-mono);font-size:14px;display:flex;align-items:center;justify-content:space-between;gap:12px;margin:8px 0}
.cmd-text{color:var(--fg);overflow-x:auto;white-space:nowrap;flex:1}

/* ── Steps ── */
.step{display:flex;gap:20px;align-items:flex-start;margin-bottom:32px}
.step-num{flex-shrink:0;width:44px;height:44px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:16px;font-weight:700;background:var(--bg4);border:1px solid var(--border2);color:var(--accent)}
.step-content h3{font-size:17px;font-weight:600;margin-bottom:6px}
.step-content p{font-size:14px;color:var(--fg2);line-height:1.7}

/* ── Table ── */
.table-wrap{overflow-x:auto;border:1px solid var(--border2);border-radius:var(--radius-lg)}
table{width:100%;border-collapse:collapse;font-size:14px}
th{text-align:left;padding:12px 16px;border-bottom:1px solid var(--border);color:var(--fg3);font-weight:500;font-size:12px;text-transform:uppercase;letter-spacing:1px;background:var(--bg3)}
td{padding:12px 16px;border-bottom:1px solid var(--border2)}
tr:hover td{background:var(--bg3)}
code{font-family:var(--font-mono);font-size:13px;color:var(--green);background:var(--bg4);padding:2px 8px;border-radius:4px}

/* ── Stats ── */
.stat{text-align:center;padding:24px}
.stat-num{font-size:40px;font-weight:800;letter-spacing:-2px;background:linear-gradient(135deg,var(--accent),var(--green));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.stat-label{font-size:14px;color:var(--fg3);margin-top:4px}

/* ── Cards ── */
.card{background:var(--bg2);border:1px solid var(--border2);border-radius:var(--radius-lg);overflow:hidden;transition:all .3s}
.card:hover{border-color:var(--border);transform:translateY(-2px)}
.card-body{padding:24px}
.card-title{font-size:16px;font-weight:600;margin-bottom:4px}
.card-desc{font-size:13px;color:var(--fg2);line-height:1.6}
.card-tag{display:inline-block;padding:3px 10px;border-radius:12px;font-size:11px;font-weight:500;background:var(--bg4);color:var(--fg2);border:1px solid var(--border2)}
.card-tag.beginner{border-color:var(--green);color:var(--green)}
.card-tag.intermediate{border-color:var(--yellow);color:var(--yellow)}
.card-tag.advanced{border-color:var(--red);color:var(--red)}

/* ── Platform Cards ── */
.platform-card{background:var(--bg2);border:1px solid var(--border2);border-radius:var(--radius-lg);padding:28px;text-align:center;transition:all .3s;cursor:pointer;position:relative}
.platform-card:hover{border-color:var(--accent);transform:translateY(-4px)}
.platform-card.detected{border-color:var(--green);background:rgba(80,227,194,.05);box-shadow:0 0 24px rgba(80,227,194,.1)}
.platform-card.detected::after{content:'Your platform';position:absolute;top:12px;right:12px;padding:3px 10px;border-radius:12px;font-size:11px;font-weight:600;background:rgba(80,227,194,.15);color:var(--green);border:1px solid rgba(80,227,194,.3)}
.platform-icon{font-size:36px;margin-bottom:12px}
.platform-name{font-size:16px;font-weight:600;margin-bottom:4px}
.platform-arch{font-size:13px;color:var(--fg3)}
.platform-btn{margin-top:16px;display:inline-flex;align-items:center;gap:6px;padding:10px 20px;border-radius:var(--radius);background:var(--fg);color:var(--bg);font-size:14px;font-weight:500;transition:all .2s;text-decoration:none}
.platform-btn:hover{background:#fff;transform:translateY(-1px);color:var(--bg)}

/* ── Example Grid ── */
.example-card{cursor:pointer}
.example-card .code-block{max-height:0;overflow:hidden;transition:max-height .4s ease;margin:0;border:none}
.example-card.open .code-block{max-height:800px;margin-top:12px}
.example-expand{font-size:12px;color:var(--accent);margin-top:8px;display:flex;align-items:center;gap:4px}
.example-expand::after{content:'→';transition:transform .2s}
.example-card.open .example-expand::after{transform:rotate(90deg)}

/* ── Grid ── */
.grid{display:grid;gap:20px}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}
@media(max-width:768px){.grid-2,.grid-3,.grid-4{grid-template-columns:1fr}}

/* ── Footer ── */
footer{border-top:1px solid var(--border2);padding:48px 0 32px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:32px;margin-bottom:32px}
@media(max-width:768px){.footer-grid{grid-template-columns:1fr 1fr}}
.footer-brand p{color:var(--fg3);font-size:14px;margin-top:8px;max-width:280px}
.footer-col h4{font-size:12px;text-transform:uppercase;letter-spacing:1px;color:var(--fg3);margin-bottom:12px}
.footer-col a{display:block;color:var(--fg2);font-size:14px;padding:3px 0;transition:color .2s;text-decoration:none}
.footer-col a:hover{color:var(--fg)}
.footer-bottom{display:flex;justify-content:space-between;align-items:center;padding-top:20px;border-top:1px solid var(--border2);font-size:13px;color:var(--fg3)}

/* ── Grid BG ── */
.grid-bg{position:fixed;inset:0;z-index:-1;background-image:linear-gradient(rgba(255,255,255,.025) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.025) 1px,transparent 1px);background-size:60px 60px}

/* ── Scroll Reveal ── */
.reveal{opacity:0;transform:translateY(40px);transition:opacity .8s cubic-bezier(.16,1,.3,1),transform .8s cubic-bezier(.16,1,.3,1)}
.reveal.visible{opacity:1;transform:translateY(0)}
.reveal-left{opacity:0;transform:translateX(-60px);transition:opacity .8s cubic-bezier(.16,1,.3,1),transform .8s cubic-bezier(.16,1,.3,1)}
.reveal-left.visible{opacity:1;transform:translateX(0)}
.reveal-right{opacity:0;transform:translateX(60px);transition:opacity .8s cubic-bezier(.16,1,.3,1),transform .8s cubic-bezier(.16,1,.3,1)}
.reveal-right.visible{opacity:1;transform:translateX(0)}
.reveal-scale{opacity:0;transform:scale(.85);transition:opacity .8s cubic-bezier(.16,1,.3,1),transform .8s cubic-bezier(.16,1,.3,1)}
.reveal-scale.visible{opacity:1;transform:scale(1)}
.reveal-rotate{opacity:0;transform:rotate(-3deg) translateY(30px);transition:opacity .9s cubic-bezier(.16,1,.3,1),transform .9s cubic-bezier(.16,1,.3,1)}
.reveal-rotate.visible{opacity:1;transform:rotate(0) translateY(0)}
.reveal-blur{opacity:0;transform:translateY(30px);filter:blur(8px);transition:all .9s cubic-bezier(.16,1,.3,1)}
.reveal-blur.visible{opacity:1;transform:translateY(0);filter:blur(0)}
.stagger{transition-delay:var(--d,0s)}
.hero-divider{width:80px;height:2px;background:linear-gradient(90deg,var(--accent),var(--green));margin:0 auto;border-radius:2px;transform:scaleX(0);transition:transform .8s cubic-bezier(.16,1,.3,1)}
.hero-divider.visible{transform:scaleX(1)}
@keyframes countUp{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}
.stat-num{display:inline-block}
.scroll-progress{position:fixed;top:64px;left:0;height:2px;background:linear-gradient(90deg,var(--accent),var(--green),var(--purple));z-index:101;transition:width .1s linear;width:0}
.section-glow{position:relative}
.section-glow::after{content:'';position:absolute;bottom:0;left:50%;transform:translateX(-50%);width:400px;height:400px;background:radial-gradient(circle,rgba(0,112,243,.06) 0%,transparent 70%);pointer-events:none;opacity:0;transition:opacity 1s ease}
.section-glow.visible::after{opacity:1}

/* ── Scrollbar ── */
::-webkit-scrollbar{width:6px;height:6px}
::-webkit-scrollbar-track{background:var(--bg)}
::-webkit-scrollbar-thumb{background:var(--border);border-radius:3px}
::-webkit-scrollbar-thumb:hover{background:var(--fg3)}

/* ── Prose ── */
.prose h2{font-size:28px;font-weight:700;margin:48px 0 16px;letter-spacing:-0.5px}
.prose h3{font-size:20px;font-weight:600;margin:32px 0 12px}
.prose h4{font-size:16px;font-weight:600;margin:24px 0 8px}
.prose p{margin:0 0 16px;color:var(--fg2);line-height:1.8}
.prose ul,.prose ol{margin:0 0 16px;padding-left:24px;color:var(--fg2)}
.prose li{margin-bottom:6px;line-height:1.7}
.prose > code{font-size:14px}
.prose hr{border:none;border-top:1px solid var(--border2);margin:32px 0}
.prose blockquote{border-left:3px solid var(--accent);padding:12px 20px;background:var(--bg3);border-radius:0 var(--radius) var(--radius) 0;margin:16px 0;color:var(--fg2)}
.prose .note{background:rgba(0,112,243,.08);border:1px solid rgba(0,112,243,.2);border-radius:var(--radius);padding:16px 20px;margin:16px 0;font-size:14px}
.prose .note strong{color:var(--accent)}

/* ── Tabs ── */
.tabs{display:flex;gap:0;border-bottom:1px solid var(--border2);margin-bottom:20px;overflow-x:auto}
.tab-btn{padding:10px 20px;font-size:14px;color:var(--fg3);background:none;border:none;border-bottom:2px solid transparent;cursor:pointer;transition:all .2s;font-family:inherit;white-space:nowrap}
.tab-btn:hover{color:var(--fg2)}
.tab-btn.active{color:var(--fg);border-bottom-color:var(--accent)}
.tab-panel{display:none}
.tab-panel.active{display:block}

/* ── Search ── */
.search-box{position:relative;margin-bottom:24px}
.search-box input{width:100%;padding:12px 16px 12px 40px;background:var(--bg3);border:1px solid var(--border2);border-radius:var(--radius);color:var(--fg);font-size:14px;font-family:inherit;outline:none;transition:border-color .2s}
.search-box input:focus{border-color:var(--accent)}
.search-box::before{content:'⌕';position:absolute;left:14px;top:50%;transform:translateY(-50%);color:var(--fg3);font-size:16px}