:root {
    --bg:          #09090b;
    --bg-raised:   rgba(255,255,255,0.03);
    --bg-card:     rgba(18,18,22,0.85);
    --accent:      #00e096;
    --accent-glow: rgba(0,224,150,0.18);
    --accent-ring: rgba(0,224,150,0.28);
    --warn:        #f0b429;
    --danger:      #f04040;
    --text:        #dddde4;
    --muted:       #7c7c8a;
    --border:      rgba(255,255,255,0.07);
    --glow:        0 0 28px rgba(0,224,150,0.22);
}

*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
    background: var(--bg);
    color: var(--text);
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    overflow-x: hidden;
}
body::before {
    content: '';
    position: fixed; inset: 0;
    background-image:
        linear-gradient(var(--accent-glow) 1px, transparent 1px),
        linear-gradient(90deg, var(--accent-glow) 1px, transparent 1px);
    background-size: 48px 48px;
    opacity: 0.4;
    pointer-events: none;
    z-index: 0;
}

.container {
    max-width: 1120px;
    margin: 0 auto;
    padding: 0 1.75rem;
    position: relative;
    z-index: 1;
}

h1 {
    font-size: clamp(2.5rem, 7vw, 4rem);
    font-weight: 900;
    line-height: 1.05;
    letter-spacing: -2px;
}
h2 {
    font-size: clamp(1.5rem, 3.5vw, 2.25rem);
    font-weight: 900;
    line-height: 1.1;
    letter-spacing: -1px;
}
h3 { font-size: 1.05rem; font-weight: 700; }

.gradient-text {
    background: linear-gradient(140deg, #fff 20%, #888 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.eyebrow {
    display: inline-block;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.68rem;
    letter-spacing: 3px;
    text-transform: uppercase;
    color: var(--accent);
    background: var(--accent-glow);
    border: 1px solid var(--accent-ring);
    padding: 0.3rem 0.9rem;
    border-radius: 100px;
    margin-bottom: 1.5rem;
}
.lead {
    color: var(--muted);
    font-size: 1.05rem;
    line-height: 1.75;
    max-width: 640px;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
code {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.88em;
    background: rgba(255,255,255,0.05);
    padding: 0.1rem 0.4rem;
    border-radius: 3px;
    color: var(--accent);
}

/* Header */
.site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    background: rgba(9,9,11,0.85);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border);
}
.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 0;
}
.logo-wrap { display: flex; align-items: baseline; gap: 0.6rem; }
.logo {
    font-family: 'JetBrains Mono', monospace;
    font-weight: 700;
    font-size: 1.2rem;
    color: var(--text);
}
.logo:hover { text-decoration: none; }
.logo-sub {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.7rem;
    color: var(--muted);
}
.logo-sub:hover { text-decoration: none; color: var(--text); }
nav { display: flex; align-items: center; gap: 0.15rem; }
nav a {
    color: var(--muted);
    padding: 0.5rem 1rem;
    font-size: 0.92rem;
}
nav a:hover { color: var(--text); text-decoration: none; }
nav a.active { color: var(--accent); }
nav .nav-cta {
    background: var(--accent);
    color: #000;
    border-radius: 5px;
    font-weight: 700;
    padding: 0.55rem 1.1rem;
    margin-left: 0.5rem;
}
nav .nav-cta:hover { filter: brightness(1.08); text-decoration: none; }

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.85rem 1.6rem;
    font-weight: 700;
    font-size: 0.92rem;
    border-radius: 5px;
    transition: all 0.2s;
    border: none;
    cursor: pointer;
}
.btn-primary { background: var(--accent); color: #000; box-shadow: var(--glow); }
.btn-primary:hover { filter: brightness(1.08); transform: translateY(-2px); text-decoration: none; }
.btn-ghost { background: transparent; color: var(--text); border: 1px solid var(--border); }
.btn-ghost:hover { border-color: var(--accent-ring); text-decoration: none; }

/* Hub hero */
.qs-hero { padding: 4rem 0 3rem; }
.qs-hero h1 { margin: 0 0 1.5rem; max-width: 820px; }

/* Hub sections */
.qs-section { padding: 2.75rem 0; border-top: 1px solid var(--border); }
.qs-section h2 { margin-bottom: 0.6rem; }
.qs-section .section-desc { color: var(--muted); margin-bottom: 2rem; max-width: 640px; }
.qs-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 1rem;
}
.qs-card {
    display: flex;
    flex-direction: column;
    padding: 1.5rem 1.25rem;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 10px;
    text-decoration: none;
    transition: all 0.2s;
    min-height: 175px;
    color: var(--text);
}
.qs-card:hover {
    border-color: var(--accent-ring);
    box-shadow: var(--glow);
    transform: translateY(-2px);
    text-decoration: none;
}
.qs-logo {
    width: 52px; height: 52px;
    border-radius: 10px;
    background: linear-gradient(135deg, var(--c1, #00e096), var(--c2, #007a5a));
    display: flex; align-items: center; justify-content: center;
    font-family: 'JetBrains Mono', monospace;
    font-weight: 700;
    color: #000;
    font-size: 1.2rem;
    margin-bottom: 0.85rem;
}
.qs-name { font-size: 1.1rem; font-weight: 700; color: var(--text); margin-bottom: 0.4rem; }
.qs-tag-desc { font-size: 0.78rem; color: var(--muted); margin: 0 0 0.6rem; line-height: 1.55; }
.qs-tag {
    font-size: 0.72rem;
    color: var(--accent);
    margin-top: auto;
    font-family: 'JetBrains Mono', monospace;
    letter-spacing: 1.5px;
    text-transform: uppercase;
}
.qs-tag::after { content: ' →'; }

/* Detail hero */
.qs-detail-hero { padding: 2.5rem 0 3rem; border-bottom: 1px solid var(--border); }
.qs-breadcrumb {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.78rem;
    color: var(--muted);
    margin-bottom: 2rem;
}
.qs-breadcrumb a { color: var(--muted); }
.qs-breadcrumb a:hover { color: var(--accent); text-decoration: none; }
.qs-detail-head { display: flex; gap: 1.5rem; align-items: flex-start; margin-bottom: 1.5rem; }
.qs-detail-logo {
    width: 80px; height: 80px;
    border-radius: 14px;
    background: linear-gradient(135deg, var(--c1, #00e096), var(--c2, #007a5a));
    display: flex; align-items: center; justify-content: center;
    font-family: 'JetBrains Mono', monospace;
    font-weight: 700;
    color: #000;
    font-size: 2rem;
    flex-shrink: 0;
}
.qs-detail-head h1 { font-size: clamp(1.8rem, 4vw, 2.6rem); margin-bottom: 0.5rem; }
.qs-meta {
    display: flex;
    gap: 1.5rem;
    flex-wrap: wrap;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.74rem;
    color: var(--muted);
}
.qs-meta span::before { content: '◆ '; color: var(--accent); margin-right: 0.4rem; }

/* Detail steps */
.qs-step { padding: 3rem 0; border-top: 1px solid var(--border); }
.qs-step .container {
    display: grid;
    grid-template-columns: 80px 1fr;
    gap: 2rem;
    align-items: start;
}
.qs-step-num {
    font-family: 'JetBrains Mono', monospace;
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--accent);
    line-height: 1;
}
.qs-step h2 { margin-bottom: 0.75rem; }
.qs-step p { color: var(--muted); margin-bottom: 1.5rem; max-width: 720px; }
.qs-step .terminal-shell { margin-top: 1rem; }
.qs-step .terminal-shell + .terminal-shell { margin-top: 1.25rem; }

/* Code blocks */
.terminal-shell {
    border-radius: 10px;
    overflow: hidden;
    border: 1px solid var(--border);
    box-shadow: 0 16px 40px rgba(0,0,0,0.4);
}
.term-bar {
    background: #111116;
    padding: 0.6rem 1rem;
    display: flex;
    align-items: center;
    gap: 7px;
    border-bottom: 1px solid var(--border);
}
.dot { width: 11px; height: 11px; border-radius: 50%; }
.dot-r { background: #f04040; }
.dot-y { background: #f0b429; }
.dot-g { background: #29c940; }
.term-label {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.72rem;
    color: var(--muted);
    margin-left: 0.4rem;
}
.term-body {
    background: #0c0c10;
    padding: 1.5rem 1.75rem;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.84rem;
    line-height: 1.85;
    color: #8888a0;
    overflow-x: auto;
}
.term-body pre { margin: 0; }
.kw  { color: #c084fc; }
.str { color: #86efac; }
.fn  { color: #60a5fa; }
.cmt { color: #3f4555; font-style: italic; }
.num { color: #fbbf24; }

/* Next steps */
.qs-next { padding: 3rem 0; border-top: 1px solid var(--border); }
.qs-next h2 { margin-bottom: 0.5rem; }
.qs-next > .container > p { color: var(--muted); margin-bottom: 1.5rem; }
.qs-next ul {
    list-style: none;
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 0.75rem;
}
.qs-next li a {
    display: block;
    padding: 1rem 1.25rem;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text);
    transition: all 0.2s;
}
.qs-next li a:hover {
    border-color: var(--accent-ring);
    color: var(--accent);
    text-decoration: none;
}
.qs-next li a strong { display: block; margin-bottom: 0.2rem; }
.qs-next li a span { font-size: 0.82rem; color: var(--muted); }
.qs-next li a:hover span { color: var(--text); }

/* Footer */
.qs-footer {
    padding: 3rem 0;
    border-top: 1px solid var(--border);
    color: var(--muted);
    font-size: 0.85rem;
    text-align: center;
}
.qs-footer a { color: var(--muted); }
.qs-footer a:hover { color: var(--accent); }

/* Responsive */
@media (max-width: 720px) {
    .qs-step .container { grid-template-columns: 1fr; gap: 0.5rem; }
    .qs-step-num { font-size: 2rem; }
    .qs-detail-head { flex-direction: column; gap: 1rem; }
    nav a:not(.nav-cta) { display: none; }
}