/* RESET */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}

:root{
  --bg-deep:#0a0e1a;--bg-surface:#111827;--bg-raised:#1a2332;--bg-subtle:#1f2937;
  --accent:#f59e0b;--accent-hover:#d97706;--accent-glow:#fbbf24;--accent-dim:rgba(245,158,11,0.12);
  --teal:#0d9488;--teal-dim:rgba(13,148,136,0.12);
  --green:#10b981;--red:#ef4444;--blue:#3b82f6;
  --text:#f0f2f7;--text-dim:#94a3b8;--text-muted:#64748b;
  --glass:rgba(255,255,255,0.04);--glass-border:rgba(255,255,255,0.08);--glass-hover:rgba(255,255,255,0.07);
  /* Legacy aliases for protocols.css / whitepaper.css */
  --bg:var(--bg-deep);--bg-alt:var(--bg-surface);--bg-card:var(--bg-raised);--bg-input:var(--bg-surface);
  --border:var(--glass-border);--border-hi:rgba(255,255,255,0.15);
  --accent2:var(--green);--accent3:var(--teal);
  --shadow-sm:0 1px 3px rgba(0,0,0,0.3);--shadow-md:0 4px 16px rgba(0,0,0,0.4);
  --shadow-lg:0 8px 32px rgba(0,0,0,0.5);--shadow-glow:0 0 24px rgba(245,158,11,0.25);
  --radius:10px;--radius-lg:16px;
  --font:'Inter',-apple-system,BlinkMacSystemFont,system-ui,sans-serif;
  --mono:'JetBrains Mono','Fira Code',monospace;
}
html{scroll-behavior:smooth}
body{font-family:var(--font);background:var(--bg-deep);color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased;overflow-x:hidden}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
code{font-family:var(--mono);background:rgba(245,158,11,0.08);padding:2px 7px;border-radius:4px;font-size:0.82em;color:var(--accent)}

.loader{position:fixed;inset:0;z-index:9999;background:var(--bg-deep);display:flex;align-items:center;justify-content:center;transition:opacity 0.6s,visibility 0.6s}
.loader.done{opacity:0;visibility:hidden;pointer-events:none}
.loader-inner{display:flex;gap:0}
.loader-letter{font-size:clamp(4rem,12vw,8rem);font-weight:700;letter-spacing:0.02em;color:var(--text);opacity:0;transform:translateY(20px);animation:loaderIn 0.5s ease forwards;animation-delay:calc(var(--d) * 0.12s)}
.loader-letter:nth-child(2){color:var(--accent)}
@keyframes loaderIn{to{opacity:1;transform:translateY(0)}}

.header{position:fixed;top:0;left:0;right:0;z-index:1000;background:rgba(10,14,26,0.85);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border-bottom:1px solid var(--glass-border);transition:background 0.3s,box-shadow 0.3s}
.header.scrolled{background:rgba(10,14,26,0.95);box-shadow:0 2px 24px rgba(0,0,0,0.4)}
.header-inner{max-width:1200px;margin:0 auto;padding:0 32px;display:flex;align-items:center;height:64px;gap:40px}
.header-logo{font-size:1.4rem;font-weight:700;color:var(--accent);letter-spacing:0.02em;font-family:var(--mono)}
.header-nav{display:flex;gap:28px;margin-left:auto}
.header-nav a{color:var(--text-dim);font-size:0.82rem;font-weight:400;letter-spacing:0.04em;text-transform:uppercase;transition:color 0.3s}
.header-nav a:hover{color:var(--accent)}
.header-toggle{display:none;background:none;border:none;cursor:pointer;width:24px;height:18px;position:relative}
.header-toggle span{display:block;width:100%;height:1.5px;background:var(--text);position:absolute;left:0;transition:all 0.3s}
.header-toggle span:nth-child(1){top:0}
.header-toggle span:nth-child(2){top:50%;transform:translateY(-50%)}
.header-toggle span:nth-child(3){bottom:0}
.header-toggle.open span:nth-child(1){top:50%;transform:translateY(-50%) rotate(45deg)}
.header-toggle.open span:nth-child(2){opacity:0}
.header-toggle.open span:nth-child(3){bottom:50%;transform:translateY(50%) rotate(-45deg)}
@media(max-width:768px){
  .header-inner{padding:0 20px}
  .header-nav{display:none;position:absolute;top:64px;left:0;right:0;background:rgba(10,14,26,0.98);flex-direction:column;padding:24px 20px;gap:16px;border-bottom:1px solid var(--glass-border);box-shadow:0 4px 16px rgba(0,0,0,0.4)}
  .header-nav.open{display:flex}
  .header-toggle{display:block}
}

.hero{min-height:100vh;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:120px 32px 60px;position:relative;background:radial-gradient(ellipse 80% 60% at 50% 0%,rgba(245,158,11,0.06) 0%,transparent 60%),var(--bg-deep)}
.hero::before{content:'';position:absolute;top:0;left:50%;transform:translateX(-50%);width:600px;height:600px;background:radial-gradient(circle,rgba(245,158,11,0.04) 0%,transparent 70%);pointer-events:none}
.hero-inner{max-width:800px;position:relative;z-index:1}
.hero-tagline{font-size:0.65rem;letter-spacing:0.3em;color:var(--text-muted);margin-bottom:32px;font-weight:400;font-family:var(--mono)}
.hero-title{font-size:clamp(3.5rem,9vw,7rem);font-weight:800;line-height:0.92;margin-bottom:24px;letter-spacing:-0.04em;color:var(--text)}
.hero-title-line{display:block}
.hero-title-line.accent{color:var(--accent)}
.hero-desc{font-size:1.05rem;color:var(--text-dim);max-width:560px;margin:0 auto 40px;line-height:1.7;font-weight:300}
.hero-actions{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;margin-bottom:48px}

.hero-terminal{background:var(--bg-surface);border:1px solid var(--glass-border);border-radius:var(--radius-lg);overflow:hidden;max-width:600px;margin:0 auto 48px;box-shadow:var(--shadow-lg),0 0 60px rgba(245,158,11,0.08);text-align:left}
.hero-terminal-header{padding:10px 16px;background:var(--bg-raised);display:flex;align-items:center;gap:8px;border-bottom:1px solid var(--glass-border)}
.terminal-dot{width:10px;height:10px;border-radius:50%}
.terminal-dot.red{background:#ff5f56}
.terminal-dot.yellow{background:#ffbd2e}
.terminal-dot.green{background:#27c93f}
.hero-terminal-title{margin-left:8px;font-size:0.75rem;color:var(--text-muted);font-family:var(--mono)}
.hero-terminal-body{padding:20px;font-family:var(--mono);font-size:0.85rem;line-height:1.8}
.hero-terminal-prompt{color:var(--accent);user-select:none}
.hero-terminal-cmd{color:var(--text)}
.hero-terminal-cursor{display:inline-block;width:8px;height:1.1em;background:var(--accent);vertical-align:text-bottom;animation:blink 1s step-end infinite}
@keyframes blink{0%,100%{opacity:1}50%{opacity:0}}
.hero-terminal-output{color:var(--text-dim);margin-top:8px;white-space:pre-wrap}
.hero-terminal-progress{margin-top:12px;height:4px;background:var(--bg-subtle);border-radius:2px;overflow:hidden}
.hero-terminal-progress-bar{height:100%;background:var(--accent);border-radius:2px;animation:progressFill 2s ease-out 1.5s forwards;width:0%}
@keyframes progressFill{to{width:100%}}
.hero-terminal-stats{display:flex;gap:24px;margin-top:12px;font-size:0.75rem;color:var(--text-muted)}
.hero-terminal-stats span{color:var(--accent);font-weight:500}

.hero-stats{display:flex;gap:64px;justify-content:center;flex-wrap:wrap;margin-top:auto;padding-top:20px}
.hero-stat{text-align:center}
.hero-stat-num{display:block;font-size:2.8rem;font-weight:800;letter-spacing:-0.03em;color:var(--accent);font-family:var(--mono)}
.hero-stat-label{font-size:0.65rem;color:var(--text-muted);text-transform:uppercase;letter-spacing:0.15em;font-family:var(--mono)}
.hero-scroll{position:absolute;bottom:32px;left:50%;transform:translateX(-50%);color:var(--text-muted);animation:scrollBounce 2s infinite}
@keyframes scrollBounce{0%,100%{transform:translateX(-50%) translateY(0)}50%{transform:translateX(-50%) translateY(6px)}}

.btn{padding:12px 28px;font-size:0.85rem;font-weight:600;border-radius:var(--radius);cursor:pointer;transition:all 0.3s;border:none;display:inline-flex;align-items:center;gap:8px;letter-spacing:0.02em;font-family:var(--font)}
.btn-primary{background:var(--accent);color:#0a0e1a;box-shadow:0 2px 12px rgba(245,158,11,0.3)}
.btn-primary:hover{background:var(--accent-glow);transform:translateY(-1px);box-shadow:0 4px 20px rgba(245,158,11,0.4)}
.btn-ghost{background:var(--glass);color:var(--text-dim);border:1px solid var(--glass-border)}
.btn-ghost:hover{border-color:var(--accent);color:var(--accent);background:var(--accent-dim)}
.btn-sm{padding:8px 18px;font-size:0.8rem}

.divider{display:flex;align-items:center;justify-content:center;gap:16px;padding:0 32px}
.divider-line{flex:1;max-width:200px;height:1px;background:var(--glass-border)}
.divider-dot{width:6px;height:6px;border-radius:50%;border:1px solid var(--glass-border);background:var(--bg-deep)}

.section{padding:100px 0}
.container{max-width:1100px;margin:0 auto;padding:0 32px}
.section-heading{font-size:clamp(2.2rem,5vw,3.2rem);font-weight:800;line-height:1.1;margin-bottom:48px;letter-spacing:-0.03em}
.section-heading .accent{color:var(--accent)}
.section-sub{color:var(--text-dim);max-width:520px;margin:-32px auto 48px;line-height:1.7;font-size:0.95rem;font-weight:300}

.bento-grid{display:grid;grid-template-columns:repeat(3,1fr);grid-template-rows:auto auto;gap:16px}
.bento-card{background:var(--glass);border:1px solid var(--glass-border);padding:32px 28px;border-radius:var(--radius-lg);box-shadow:var(--shadow-md);transition:transform 0.3s,box-shadow 0.3s,border-color 0.3s;position:relative;overflow:hidden}
.bento-card::before{content:'';position:absolute;top:0;left:0;right:0;height:2px;background:linear-gradient(90deg,transparent,var(--accent),transparent);opacity:0;transition:opacity 0.3s}
.bento-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg),var(--shadow-glow);border-color:rgba(245,158,11,0.2)}
.bento-card:hover::before{opacity:1}
.bento-card.span-2{grid-column:span 2}
.bento-card.span-3{grid-column:span 3}
.bento-tag{display:inline-block;font-size:0.6rem;font-weight:600;text-transform:uppercase;letter-spacing:0.12em;color:var(--accent);margin-bottom:16px;font-family:var(--mono)}
.bento-card h3{font-size:1.1rem;font-weight:700;margin-bottom:8px;letter-spacing:-0.01em}
.bento-card p{font-size:0.85rem;color:var(--text-dim);margin-bottom:16px;line-height:1.6;font-weight:300}
.bento-card code{font-size:0.75rem;display:block;padding:12px 14px;background:var(--bg-surface);border-radius:8px;word-break:break-all;color:var(--text-dim);border:1px solid var(--glass-border);font-family:var(--mono)}
.bento-icon{font-size:1.8rem;margin-bottom:12px;display:block}
@media(max-width:900px){.bento-grid{grid-template-columns:repeat(2,1fr)}.bento-card.span-2{grid-column:span 2}}
@media(max-width:550px){.bento-grid{grid-template-columns:1fr}.bento-card.span-2,.bento-card.span-3{grid-column:span 1}}

.about-intro{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:start;margin-bottom:64px}
.about-text p{font-size:1rem;color:var(--text-dim);line-height:1.8;font-weight:300}
.about-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.about-card{background:var(--glass);border:1px solid var(--glass-border);padding:36px 28px;border-radius:var(--radius-lg);box-shadow:var(--shadow-md);transition:transform 0.3s,box-shadow 0.3s}
.about-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}
.about-num{font-size:0.7rem;color:var(--accent);letter-spacing:0.1em;font-family:var(--mono);display:block;margin-bottom:16px}
.about-card h3{font-size:1rem;font-weight:600;margin-bottom:8px}
.about-card p{font-size:0.85rem;color:var(--text-dim);line-height:1.6;font-weight:300}
@media(max-width:800px){.about-intro{grid-template-columns:1fr;gap:24px}.about-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:500px){.about-grid{grid-template-columns:1fr}}

.compare-table{width:100%;border-collapse:collapse;background:var(--bg-surface);border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-md);border:1px solid var(--glass-border)}
.compare-table thead{background:var(--bg-raised)}
.compare-table th{padding:14px 20px;text-align:left;font-size:0.75rem;font-weight:600;text-transform:uppercase;letter-spacing:0.08em;color:var(--text-dim);border-bottom:1px solid var(--glass-border);font-family:var(--mono)}
.compare-table th:last-child{color:var(--accent)}
.compare-table td{padding:12px 20px;font-size:0.85rem;border-bottom:1px solid var(--glass-border);color:var(--text-dim)}
.compare-table tr:last-child td{border-bottom:none}
.compare-table td:last-child{color:var(--accent);font-weight:600;font-family:var(--mono)}
.compare-table tr:hover{background:var(--glass-hover)}

.install-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.install-card{background:var(--glass);border:1px solid var(--glass-border);padding:28px 24px;border-radius:var(--radius-lg);box-shadow:var(--shadow-md)}
.install-label{font-size:0.7rem;text-transform:uppercase;letter-spacing:0.1em;color:var(--text-muted);display:block;margin-bottom:16px;font-family:var(--mono)}
.code-block{background:var(--bg-surface);border:none;border-radius:8px;overflow:hidden;border:1px solid var(--glass-border)}
.code-block pre{padding:16px;margin:0;overflow-x:auto}
.code-block code{font-size:0.78rem;line-height:1.7;background:none;padding:0;color:var(--text-dim)}
@media(max-width:700px){.install-grid{grid-template-columns:1fr}}

.cmd-filter{display:flex;gap:6px;justify-content:center;flex-wrap:wrap;margin-bottom:36px}
.cmd-filter-btn{padding:7px 16px;border-radius:999px;border:1px solid var(--glass-border);background:var(--glass);color:var(--text-dim);font-size:0.78rem;cursor:pointer;transition:all 0.3s;font-family:var(--mono);letter-spacing:0.02em}
.cmd-filter-btn:hover,.cmd-filter-btn.active{border-color:var(--accent);color:var(--accent);background:var(--accent-dim);box-shadow:0 2px 8px rgba(245,158,11,0.15)}
.cmd-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
.cmd-item{background:var(--glass);border:1px solid var(--glass-border);padding:20px;border-radius:var(--radius);box-shadow:var(--shadow-sm);transition:transform 0.3s,box-shadow 0.3s;cursor:pointer}
.cmd-item:hover{transform:translateY(-2px);box-shadow:var(--shadow-md)}
.cmd-item .cmd-name{font-weight:600;font-size:0.88rem;color:var(--accent);font-family:var(--mono)}
.cmd-item .cmd-desc{color:var(--text-dim);font-size:0.78rem;margin-top:4px;font-weight:300}
.cmd-item .cmd-example{margin-top:10px;padding:10px 12px;background:var(--bg-surface);border-radius:6px;font-family:var(--mono);font-size:0.72rem;color:var(--text-dim);display:none;border:1px solid var(--glass-border);white-space:pre-wrap;line-height:1.6}
.cmd-item.expanded .cmd-example{display:block}
@media(max-width:700px){.cmd-grid{grid-template-columns:1fr}}

.players-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
@media(max-width:900px){.players-grid{grid-template-columns:1fr}}
.player-card{background:var(--glass);border:1px solid var(--glass-border);border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-md)}
.player-header{padding:12px 20px;border-bottom:1px solid var(--glass-border);display:flex;align-items:center;gap:12px;background:var(--bg-raised)}
.player-badge{padding:3px 10px;border-radius:999px;font-size:0.65rem;font-weight:600;text-transform:uppercase;letter-spacing:0.08em;background:var(--accent-dim);color:var(--accent)}
.player-badge.audio{background:var(--teal-dim);color:var(--teal)}
.player-title{font-size:0.82rem;color:var(--text-dim)}
.demo-selector{padding:10px 20px;display:flex;align-items:center;gap:10px;background:var(--bg-surface);border-bottom:1px solid var(--glass-border)}
.demo-selector label{font-size:0.72rem;color:var(--text-dim);white-space:nowrap}
.demo-selector select{flex:1;padding:5px 8px;border-radius:6px;border:1px solid var(--glass-border);background:var(--bg-raised);color:var(--text);font-size:0.78rem;cursor:pointer;outline:none}
.demo-selector select:focus{border-color:var(--accent)}
.video-container{position:relative;background:#000;aspect-ratio:16/9}
#videoPlayer{width:100%;height:100%;object-fit:contain}
.video-overlay{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;background:rgba(0,0,0,0.6);transition:all 0.3s}
.video-overlay.hidden{opacity:0;pointer-events:none}
.audio-visual{position:relative;background:var(--bg-surface);height:200px}
#audioCanvas{width:100%;height:100%;display:block}
.audio-overlay{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;background:rgba(10,14,26,0.8);transition:all 0.3s}
.audio-overlay.hidden{opacity:0;pointer-events:none}
.drop-zone{display:flex;flex-direction:column;align-items:center;gap:8px;color:var(--text-dim);font-size:0.85rem}
.drop-icon{font-size:2.5rem}
.drop-btn{padding:8px 20px;border-radius:6px;background:var(--accent);color:#0a0e1a;cursor:pointer;font-size:0.8rem;font-weight:600;transition:all 0.3s;border:none;font-family:var(--font);box-shadow:0 2px 8px rgba(245,158,11,0.3)}
.drop-btn:hover{background:var(--accent-glow);box-shadow:0 4px 16px rgba(245,158,11,0.4)}
.drop-zone.dragover{border-color:var(--green);color:var(--green)}
.player-controls{padding:10px 16px;display:flex;align-items:center;gap:10px;border-top:1px solid var(--glass-border)}
.ctrl-btn{background:none;border:none;color:var(--text);font-size:1rem;cursor:pointer;padding:4px 8px;border-radius:4px;transition:background 0.3s}
.ctrl-btn:hover{background:var(--glass-hover)}
.ctrl-progress{flex:1}
.seek-bar,.vol-bar{-webkit-appearance:none;width:100%;height:3px;background:var(--bg-subtle);border-radius:2px;outline:none;cursor:pointer}
.seek-bar::-webkit-slider-thumb,.vol-bar::-webkit-slider-thumb{-webkit-appearance:none;width:12px;height:12px;border-radius:50%;background:var(--accent);cursor:pointer}
.vol-bar{width:80px}
.ctrl-time{font-size:0.75rem;color:var(--text-dim);font-family:var(--mono);white-space:nowrap}
.player-info{padding:10px 16px;border-top:1px solid var(--glass-border);font-size:0.78rem;color:var(--text-dim);font-family:var(--mono);display:none}
.player-info.visible{display:block}

.api-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;margin-bottom:24px}
.api-card{background:var(--glass);border:1px solid var(--glass-border);padding:20px;border-radius:var(--radius);box-shadow:var(--shadow-sm);cursor:pointer;transition:transform 0.3s,box-shadow 0.3s}
.api-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-md)}
.api-card.selected{background:var(--accent-dim);box-shadow:0 0 0 2px var(--accent),var(--shadow-md)}
.api-method{display:inline-block;padding:2px 8px;border-radius:4px;font-size:0.65rem;font-weight:600;font-family:var(--mono);margin-right:8px}
.api-method.get{background:rgba(16,185,129,0.12);color:var(--green)}
.api-path{font-family:var(--mono);font-size:0.8rem}
.api-card p{color:var(--text-dim);font-size:0.78rem;margin-top:8px;font-weight:300}
.api-viewer{background:var(--bg-surface);border:1px solid var(--glass-border);border-radius:var(--radius-lg);overflow:hidden;margin-bottom:32px;box-shadow:var(--shadow-md)}
.api-viewer-header{padding:12px 20px;border-bottom:1px solid var(--glass-border);display:flex;align-items:center;justify-content:space-between;background:var(--bg-raised)}
.api-viewer-header span{font-family:var(--mono);font-size:0.8rem;color:var(--accent)}
.api-run-btn{padding:6px 16px;border-radius:6px;background:var(--accent);color:#0a0e1a;border:none;font-size:0.8rem;cursor:pointer;transition:all 0.3s;font-family:var(--font);font-weight:600;box-shadow:0 2px 6px rgba(245,158,11,0.25)}
.api-run-btn:disabled{opacity:0.3;cursor:not-allowed;box-shadow:none}
.api-run-btn:not(:disabled):hover{background:var(--accent-glow);box-shadow:0 4px 12px rgba(245,158,11,0.35)}
.api-response{padding:20px;margin:0;font-family:var(--mono);font-size:0.78rem;color:var(--text-dim);max-height:400px;overflow:auto;white-space:pre-wrap;word-break:break-word}
.terminal{background:var(--bg-surface);border:1px solid var(--glass-border);border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-md)}
.terminal-header{padding:10px 16px;background:var(--bg-raised);display:flex;align-items:center;gap:8px}
.terminal-title{margin-left:8px;font-size:0.75rem;color:var(--text-muted);font-family:var(--mono)}
.terminal-body{padding:16px;font-family:var(--mono);font-size:0.82rem;max-height:400px;overflow:auto}
.terminal-line{display:flex;gap:8px;margin-bottom:4px}
.terminal-prompt{color:var(--accent);user-select:none}
.terminal-text{outline:none;flex:1;color:var(--text);white-space:pre}
.terminal-output{color:var(--text-dim);white-space:pre-wrap;word-break:break-word;margin-top:8px;line-height:1.5}

.stream-grid{display:grid;grid-template-columns:2fr 1fr;gap:24px}
@media(max-width:800px){.stream-grid{grid-template-columns:1fr}}
.stream-card{background:var(--glass);border:1px solid var(--glass-border);border-radius:var(--radius-lg);padding:24px;box-shadow:var(--shadow-md)}
.stream-card h3{margin-bottom:16px;font-size:1rem}
.hls-container{margin-bottom:16px}
.hls-video{width:100%;background:#000;border-radius:8px;aspect-ratio:16/9}
.hls-status{padding:8px 12px;margin-top:8px;background:var(--bg-surface);border-radius:6px;font-size:0.78rem;color:var(--text-dim);font-family:var(--mono);border:1px solid var(--glass-border)}
.stream-controls{display:flex;gap:8px;flex-wrap:wrap}
.stream-select{padding:8px 12px;border-radius:6px;background:var(--bg-raised);color:var(--text);border:1px solid var(--glass-border);font-size:0.82rem;font-family:var(--font)}
.proto-tag{display:inline-block;padding:4px 10px;border-radius:6px;background:var(--bg-surface);border:1px solid var(--glass-border);font-family:var(--mono);font-size:0.75rem;color:var(--accent);font-weight:500}
.proto-tag-grid{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:16px}
.stream-card-desc{color:var(--text-dim);margin:8px 0 16px}

.backend-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
@media(max-width:800px){.backend-grid{grid-template-columns:1fr}}
.backend-card{background:var(--glass);border:1px solid var(--glass-border);padding:32px 24px;text-align:center;border-radius:var(--radius-lg);box-shadow:var(--shadow-md);transition:transform 0.3s,box-shadow 0.3s;position:relative}
.backend-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}
.backend-card.active{box-shadow:0 0 0 2px var(--accent),var(--shadow-lg)}
.backend-tag{display:inline-block;padding:3px 10px;border-radius:999px;font-size:0.6rem;font-weight:600;text-transform:uppercase;letter-spacing:0.1em;margin-bottom:16px;color:var(--text-muted);border:1px solid var(--glass-border)}
.backend-tag.active{color:var(--accent);border-color:var(--accent);background:var(--accent-dim)}
.backend-card h3{font-size:1.1rem;margin-bottom:16px;font-weight:600}
.backend-card ul{list-style:none;text-align:left;margin:0 0 16px}
.backend-card li{padding:7px 0;font-size:0.78rem;color:var(--text-dim);border-bottom:1px solid var(--glass-border);font-weight:300}
.backend-card li:last-child{border:none}
.backend-card code{display:block;padding:10px;background:var(--bg-surface);border-radius:6px;font-size:0.75rem;margin-top:12px;word-break:break-all;border:1px solid var(--glass-border);color:var(--text-dim)}

.footer{padding:64px 0 32px;border-top:1px solid var(--glass-border);background:var(--bg-surface);color:var(--text-dim)}
.footer-top{display:flex;gap:64px;margin-bottom:48px}
.footer-brand{max-width:280px}
.footer-logo{font-size:1.6rem;font-weight:700;display:block;margin-bottom:12px;color:var(--accent);font-family:var(--mono)}
.footer-brand p{font-size:0.82rem;color:var(--text-muted);line-height:1.6;font-weight:300}
.footer-links{display:flex;gap:64px;flex:1}
.footer-col h4{font-size:0.7rem;text-transform:uppercase;letter-spacing:0.12em;color:var(--text-muted);margin-bottom:12px;font-weight:600;font-family:var(--mono)}
.footer-col p{font-size:0.82rem;color:var(--text-dim);line-height:1.7;font-weight:300}
.footer-col a{color:var(--accent);transition:color 0.3s}
.footer-col a:hover{color:var(--accent-glow)}
.footer-bottom{text-align:center;padding-top:24px;border-top:1px solid var(--glass-border);font-size:0.75rem;color:var(--text-muted)}
@media(max-width:768px){.footer-top{flex-direction:column;gap:32px}.footer-links{flex-direction:column;gap:24px}}

::-webkit-scrollbar{width:6px;height:6px}
::-webkit-scrollbar-track{background:var(--bg-deep)}
::-webkit-scrollbar-thumb{background:var(--bg-subtle);border-radius:3px}
::-webkit-scrollbar-thumb:hover{background:var(--accent)}

.fade-up{opacity:0;transform:translateY(24px);transition:opacity 0.7s ease,transform 0.7s ease}
.fade-up.visible{opacity:1;transform:translateY(0)}

@media(max-width:480px){
  .container{padding:0 16px}
  .section{padding:60px 0}
  .hero{padding:100px 16px 40px}
  .hero-stats{gap:32px}
  .hero-stat-num{font-size:2rem}
  .section-heading{font-size:clamp(1.6rem,5vw,2.4rem);margin-bottom:32px}
}