@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=JetBrains+Mono:wght@400;500&display=swap');

:root {
    --bg-primary: #050508;
    --glass-bg: rgba(255, 255, 255, 0.04);
    --glass-border: rgba(255, 255, 255, 0.08);
    --text-primary: #f0f0f5;
    --text-secondary: rgba(240, 240, 245, 0.55);
    --text-muted: rgba(240, 240, 245, 0.35);
    --accent-cyan: #00d4ff;
    --accent-purple: #a855f7;
    --accent-green: #22c55e;
    --accent-blue: #3b82f6;
    --accent-red: #ef4444;
    --radius-lg: 20px;
    --radius-md: 14px;
    --radius-sm: 10px;
    --nav-height: 64px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.75;
    overflow-x: hidden;
}

.bg-grid {
    position: fixed; inset: 0;
    background-image:
        linear-gradient(rgba(255,255,255,0.012) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.012) 1px, transparent 1px);
    background-size: 56px 56px;
    pointer-events: none;
    z-index: 0;
}

.bg-glow {
    position: fixed;
    width: 500px; height: 500px;
    border-radius: 50%;
    filter: blur(140px);
    opacity: 0.12;
    pointer-events: none;
    z-index: 0;
}
.bg-glow-1 { top: -120px; right: -80px; background: var(--accent-cyan); }
.bg-glow-2 { bottom: -120px; left: -120px; background: var(--accent-purple); }

.glass {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    backdrop-filter: blur(40px);
    -webkit-backdrop-filter: blur(40px);
}

.glass-sm {
    background: rgba(255,255,255,0.03);
    border: 1px solid rgba(255,255,255,0.06);
    border-radius: var(--radius-md);
    backdrop-filter: blur(30px);
    -webkit-backdrop-filter: blur(30px);
}

/* Nav */
nav {
    position: fixed; top: 0; left: 0; right: 0;
    z-index: 200;
    height: var(--nav-height);
    padding: 0 24px;
    background: rgba(5, 5, 8, 0.82);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    border-bottom: 1px solid rgba(255,255,255,0.05);
}

.nav-inner {
    max-width: 1100px;
    margin: 0 auto;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 700;
    font-size: 17px;
    letter-spacing: -0.3px;
    flex-shrink: 0;
}

.logo-icon {
    width: 36px;
    height: 36px;
    border-radius: 10px;
    object-fit: contain;
    flex-shrink: 0;
    display: block;
}

.nav-links {
    display: flex;
    flex-wrap: wrap;
    gap: 6px 20px;
    list-style: none;
    justify-content: flex-end;
}

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 13px;
    font-weight: 500;
    transition: color 0.2s;
}
.nav-links a:hover, .nav-links a.active { color: var(--text-primary); }

/* Layout */
main, .page-wrap {
    position: relative;
    z-index: 1;
    max-width: 1100px;
    margin: 0 auto;
    padding: calc(var(--nav-height) + 48px) 24px 80px;
}

.hero {
    text-align: center;
    padding: 40px 0 64px;
}

.hero h1 {
    font-size: clamp(36px, 6vw, 64px);
    font-weight: 800;
    letter-spacing: -2px;
    line-height: 1.1;
    margin-bottom: 20px;
}

.hero h1 .gradient {
    background: linear-gradient(135deg, var(--accent-cyan), var(--accent-blue), var(--accent-purple));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero .lead {
    font-size: 18px;
    color: var(--text-secondary);
    max-width: 640px;
    margin: 0 auto 32px;
    font-weight: 300;
}

.badge-row {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    justify-content: center;
    margin-bottom: 40px;
}

.badge {
    padding: 6px 14px;
    border-radius: 100px;
    font-size: 12px;
    font-weight: 500;
    border: 1px solid rgba(255,255,255,0.08);
    background: rgba(255,255,255,0.03);
    color: var(--text-secondary);
}

.badge.green { border-color: rgba(34,197,94,0.25); color: var(--accent-green); background: rgba(34,197,94,0.06); }

.cta-row {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    justify-content: center;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 22px;
    border-radius: 100px;
    font-size: 14px;
    font-weight: 600;
    text-decoration: none;
    transition: transform 0.2s, opacity 0.2s;
}
.btn:hover { transform: translateY(-1px); }
.btn-primary {
    background: linear-gradient(135deg, var(--accent-cyan), var(--accent-blue));
    color: #050508;
}
.btn-ghost {
    background: rgba(255,255,255,0.05);
    border: 1px solid rgba(255,255,255,0.1);
    color: var(--text-primary);
}

/* Sections */
.section { margin-bottom: 56px; }
.section-label {
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--accent-cyan);
    margin-bottom: 10px;
}
.section h2 {
    font-size: clamp(26px, 4vw, 36px);
    font-weight: 700;
    letter-spacing: -1px;
    margin-bottom: 12px;
}
.section > p.desc {
    color: var(--text-secondary);
    margin-bottom: 28px;
    max-width: 720px;
}

/* Guide cards */
.guide-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 16px;
}

.guide-card {
    padding: 24px;
}
.guide-card h3 {
    font-size: 17px;
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    gap: 10px;
}
.guide-card .icon { font-size: 22px; }
.guide-card p { font-size: 14px; color: var(--text-secondary); margin-bottom: 12px; }

.steps {
    list-style: none;
    counter-reset: step;
}
.steps li {
    position: relative;
    padding-left: 36px;
    margin-bottom: 14px;
    font-size: 14px;
    color: var(--text-secondary);
}
.steps li::before {
    counter-increment: step;
    content: counter(step);
    position: absolute;
    left: 0;
    top: 2px;
    width: 22px; height: 22px;
    border-radius: 7px;
    background: rgba(0,212,255,0.12);
    color: var(--accent-cyan);
    font-size: 11px;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
}
.steps li strong { color: var(--text-primary); font-weight: 600; }

/* TOC */
.toc {
    padding: 28px 32px;
    margin-bottom: 48px;
}
.toc h2 { font-size: 20px; margin-bottom: 16px; }
.toc ol {
    columns: 2;
    column-gap: 32px;
    padding-left: 20px;
    font-size: 14px;
}
.toc a { color: var(--accent-cyan); text-decoration: none; }
.toc a:hover { text-decoration: underline; }
@media (max-width: 640px) { .toc ol { columns: 1; } }

/* Detail blocks */
.detail-block {
    padding: 28px 32px;
    margin-bottom: 20px;
}
.detail-block h3 {
    font-size: 20px;
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 1px solid rgba(255,255,255,0.06);
}
.detail-block h4 {
    font-size: 15px;
    margin: 20px 0 10px;
    color: var(--accent-cyan);
}
.detail-block p, .detail-block li {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 10px;
}
.detail-block ul, .detail-block ol { padding-left: 22px; margin-bottom: 12px; }
.detail-block li { margin-bottom: 6px; }
.detail-block strong { color: var(--text-primary); }

.tip {
    padding: 14px 18px;
    border-radius: var(--radius-md);
    background: rgba(0,212,255,0.06);
    border: 1px solid rgba(0,212,255,0.15);
    font-size: 13px;
    color: var(--text-secondary);
    margin: 16px 0;
}
.tip strong { color: var(--accent-cyan); }

.warn {
    padding: 14px 18px;
    border-radius: var(--radius-md);
    background: rgba(239,68,68,0.06);
    border: 1px solid rgba(239,68,68,0.15);
    font-size: 13px;
    color: var(--text-secondary);
    margin: 16px 0;
}

table.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 14px;
    margin: 16px 0;
}
.data-table th, .data-table td {
    padding: 12px 16px;
    text-align: left;
    border-bottom: 1px solid rgba(255,255,255,0.06);
}
.data-table th {
    color: var(--text-muted);
    font-weight: 600;
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}
.data-table td { color: var(--text-secondary); }

/* Legal pages */
.legal-content {
    padding: 40px 44px;
    max-width: 800px;
}
.legal-content h1 {
    font-size: 32px;
    margin-bottom: 8px;
    letter-spacing: -1px;
}
.legal-content .updated {
    font-size: 13px;
    color: var(--text-muted);
    margin-bottom: 32px;
}
.legal-content h2 {
    font-size: 20px;
    margin: 32px 0 12px;
    color: var(--text-primary);
}
.legal-content p, .legal-content li {
    font-size: 15px;
    color: var(--text-secondary);
    margin-bottom: 12px;
}
.legal-content ul { padding-left: 24px; margin-bottom: 16px; }
.legal-content a { color: var(--accent-cyan); }

footer {
    position: relative;
    z-index: 1;
    text-align: center;
    padding: 48px 24px 64px;
    border-top: 1px solid rgba(255,255,255,0.05);
    color: var(--text-muted);
    font-size: 13px;
}
.footer-links {
    display: flex;
    flex-wrap: wrap;
    gap: 8px 24px;
    justify-content: center;
    margin-bottom: 16px;
}
.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 14px;
}
.footer-links a:hover { color: var(--text-primary); }

code {
    font-family: 'JetBrains Mono', monospace;
    font-size: 12px;
    background: rgba(255,255,255,0.06);
    padding: 2px 6px;
    border-radius: 4px;
    color: var(--accent-cyan);
}

@media (max-width: 768px) {
    .nav-links { display: none; }
    .legal-content { padding: 28px 22px; }
}