:root {
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #818cf8;
    --secondary: #0ea5e9;
    --accent: #f59e0b;
    --accent-pink: #ec4899;
    --accent-green: #10b981;
    --accent-purple: #a855f7;

    --bg-base: #0a0e1a;
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-tertiary: #334155;
    --bg-card: rgba(30, 41, 59, 0.7);
    --bg-card-hover: rgba(40, 55, 80, 0.8);

    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;

    --border: rgba(148, 163, 184, 0.08);
    --border-hover: rgba(99, 102, 241, 0.3);

    --glow-primary: 0 0 40px rgba(99, 102, 241, 0.15);
    --glow-secondary: 0 0 40px rgba(14, 165, 233, 0.15);
    --glow-accent: 0 0 30px rgba(245, 158, 11, 0.12);

    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;

    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--bg-base);
    color: var(--text-primary);
    line-height: 1.7;
    font-size: 16px;
    overflow-x: hidden;
}

a { color: var(--primary-light); text-decoration: none; transition: var(--transition-fast); }
a:hover { color: var(--primary); }

.container { max-width: 1280px; margin: 0 auto; padding: 0 24px; }

::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--bg-base); }
::-webkit-scrollbar-thumb { background: var(--bg-tertiary); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }

.header {
    position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
    background: rgba(10, 14, 26, 0.8);
    backdrop-filter: blur(24px) saturate(180%);
    border-bottom: 1px solid var(--border);
    transition: var(--transition-normal);
}
.header.scrolled { background: rgba(10, 14, 26, 0.95); box-shadow: 0 4px 30px rgba(0,0,0,0.3); }

.header-inner {
    display: flex; align-items: center; justify-content: space-between;
    height: 72px; max-width: 1400px; margin: 0 auto; padding: 0 32px;
}

.logo { display: flex; align-items: center; gap: 12px; font-size: 20px; font-weight: 700; color: var(--text-primary); text-decoration: none; }
.logo-icon {
    width: 40px; height: 40px;
    background: linear-gradient(135deg, var(--primary), var(--accent-pink));
    border-radius: var(--radius-md);
    display: flex; align-items: center; justify-content: center;
    font-size: 18px; color: white; font-weight: 800;
    box-shadow: var(--glow-primary);
}
.logo span {
    background: linear-gradient(135deg, var(--primary-light), var(--accent-pink));
    -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}

.nav { display: flex; align-items: center; gap: 8px; }
.nav a {
    color: var(--text-secondary); font-size: 14px; font-weight: 500;
    padding: 8px 16px; border-radius: var(--radius-sm);
    transition: var(--transition-fast); text-decoration: none;
}
.nav a:hover, .nav a.active { color: var(--text-primary); background: rgba(99,102,241,0.1); }

.header-actions { display: flex; align-items: center; gap: 12px; }

.lang-dropdown { position: relative; }
.lang-btn {
    display: flex; align-items: center; gap: 6px; padding: 6px 12px;
    background: var(--bg-secondary); border: 1px solid var(--border);
    border-radius: var(--radius-sm); color: var(--text-primary);
    font-size: 13px; cursor: pointer; transition: var(--transition-fast);
    font-family: inherit; white-space: nowrap;
}
.lang-btn:hover { border-color: var(--border-hover); background: var(--bg-tertiary); }
.lang-flag { font-size: 16px; line-height: 1; }
.lang-name { font-weight: 500; }
.lang-arrow { font-size: 10px; opacity: 0.6; transition: var(--transition-fast); }
.lang-menu {
    position: absolute; top: calc(100% + 6px); right: 0; min-width: 150px;
    background: var(--bg-secondary); border: 1px solid var(--border);
    border-radius: var(--radius-md); padding: 4px; z-index: 100;
    opacity: 0; visibility: hidden; transform: translateY(-8px);
    transition: var(--transition-fast); box-shadow: 0 8px 32px rgba(0,0,0,0.4);
}
.lang-menu.open { opacity: 1; visibility: visible; transform: translateY(0); }
.lang-option {
    display: flex; align-items: center; gap: 8px; width: 100%;
    padding: 8px 12px; background: none; border: none;
    color: var(--text-secondary); font-size: 13px; cursor: pointer;
    border-radius: var(--radius-sm); transition: var(--transition-fast);
    font-family: inherit; text-align: left;
}
.lang-option:hover { background: rgba(99,102,241,0.1); color: var(--text-primary); }
.lang-option.active { background: rgba(99,102,241,0.15); color: var(--primary-light); }

.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 8px;
    padding: 10px 24px; border-radius: var(--radius-md); font-size: 14px; font-weight: 600;
    cursor: pointer; transition: var(--transition-normal); border: none;
    text-decoration: none; white-space: nowrap;
}
.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: white; box-shadow: 0 4px 14px rgba(99,102,241,0.35);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 6px 20px rgba(99,102,241,0.5); color: white; }
.btn-secondary {
    background: var(--bg-tertiary); color: var(--text-primary);
    border: 1px solid var(--border);
}
.btn-secondary:hover { border-color: var(--border-hover); background: var(--bg-card-hover); color: var(--text-primary); }
.btn-ghost { background: transparent; color: var(--text-secondary); border: 1px solid var(--border); }
.btn-ghost:hover { color: var(--text-primary); border-color: var(--border-hover); }

.mobile-toggle { display: none; flex-direction: column; gap: 5px; background: none; border: none; cursor: pointer; padding: 8px; }
.mobile-toggle span { width: 22px; height: 2px; background: var(--text-primary); border-radius: 2px; transition: var(--transition-normal); }

.hero {
    min-height: 100vh; display: flex; align-items: center; justify-content: center;
    position: relative; padding: 120px 24px 80px; overflow: hidden;
}
.hero::before {
    content: ''; position: absolute; inset: 0;
    background:
        radial-gradient(ellipse 80% 60% at 20% 10%, rgba(99,102,241,0.12) 0%, transparent 60%),
        radial-gradient(ellipse 60% 50% at 80% 90%, rgba(14,165,233,0.08) 0%, transparent 60%),
        radial-gradient(ellipse 40% 40% at 50% 50%, rgba(236,72,153,0.05) 0%, transparent 60%);
    animation: heroPulse 15s ease-in-out infinite;
}
@keyframes heroPulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.8; transform: scale(1.05); }
}

.hero-grid {
    position: absolute; inset: 0; opacity: 0.03;
    background-image:
        linear-gradient(rgba(99,102,241,0.5) 1px, transparent 1px),
        linear-gradient(90deg, rgba(99,102,241,0.5) 1px, transparent 1px);
    background-size: 60px 60px;
}

.hero-content { position: relative; z-index: 1; text-align: center; max-width: 960px; }

.hero-badge {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 8px 20px; background: rgba(99,102,241,0.1);
    border: 1px solid rgba(99,102,241,0.25); border-radius: var(--radius-full);
    font-size: 13px; font-weight: 600; color: var(--primary-light);
    margin-bottom: 32px; animation: fadeInUp 0.6s ease;
}
.hero-badge .pulse-dot {
    width: 8px; height: 8px; border-radius: 50%; background: var(--accent-green);
    animation: pulse 2s infinite;
}
@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(1.5); }
}

.hero h1 {
    font-size: clamp(40px, 6vw, 72px); font-weight: 800; line-height: 1.08;
    margin-bottom: 24px; letter-spacing: -0.03em;
    animation: fadeInUp 0.6s ease 0.1s both;
}
.hero h1 .gradient-text {
    background: linear-gradient(135deg, var(--primary-light) 0%, var(--secondary) 40%, var(--accent-pink) 70%, var(--accent) 100%);
    -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
    background-size: 200% 200%; animation: gradientShift 6s ease infinite;
}
@keyframes gradientShift {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

.hero-desc {
    font-size: 19px; color: var(--text-secondary); line-height: 1.8;
    margin-bottom: 48px; max-width: 680px; margin-left: auto; margin-right: auto;
    animation: fadeInUp 0.6s ease 0.2s both;
}

.hero-actions {
    display: flex; align-items: center; justify-content: center; gap: 16px; flex-wrap: wrap;
    animation: fadeInUp 0.6s ease 0.3s both;
}
.hero-actions .btn { padding: 14px 32px; font-size: 15px; }

@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}

.architecture-section { padding: 100px 0; position: relative; }
.architecture-section::before {
    content: ''; position: absolute; top: 0; left: 0; right: 0; height: 1px;
    background: linear-gradient(90deg, transparent, var(--primary), transparent);
}

.section-tag {
    display: inline-block; padding: 6px 16px;
    background: rgba(99,102,241,0.1); border: 1px solid rgba(99,102,241,0.2);
    border-radius: var(--radius-full); font-size: 12px; font-weight: 700;
    color: var(--primary-light); letter-spacing: 1px; text-transform: uppercase;
}
.section-header { text-align: center; margin-bottom: 64px; }
.section-title {
    font-size: clamp(28px, 4vw, 44px); font-weight: 800; line-height: 1.2;
    margin: 16px 0; letter-spacing: -0.02em;
}
.section-subtitle { font-size: 17px; color: var(--text-secondary); max-width: 600px; margin: 0 auto; line-height: 1.7; }

.arch-diagram {
    background: var(--bg-card); backdrop-filter: blur(16px);
    border: 1px solid var(--border); border-radius: var(--radius-xl);
    padding: 48px; position: relative; overflow: hidden;
}
.arch-diagram::before {
    content: ''; position: absolute; top: -1px; left: 20%; right: 20%; height: 2px;
    background: linear-gradient(90deg, transparent, var(--primary), var(--secondary), transparent);
}

.arch-layer {
    display: flex; align-items: center; justify-content: center; gap: 24px;
    padding: 24px 0; position: relative;
}
.arch-layer + .arch-layer { margin-top: 16px; }

.arch-node {
    display: flex; flex-direction: column; align-items: center; gap: 8px;
    padding: 20px 28px; border-radius: var(--radius-lg);
    border: 1px solid var(--border); background: var(--bg-secondary);
    transition: var(--transition-normal); cursor: default; min-width: 160px;
}
.arch-node:hover {
    transform: translateY(-4px); border-color: var(--border-hover);
    box-shadow: var(--glow-primary);
}
.arch-node.primary {
    background: linear-gradient(135deg, rgba(99,102,241,0.15), rgba(14,165,233,0.1));
    border-color: rgba(99,102,241,0.3); min-width: 220px;
}
.arch-node.primary:hover { box-shadow: var(--glow-primary), var(--glow-secondary); }
.arch-node.worker {
    background: linear-gradient(135deg, rgba(16,185,129,0.1), rgba(14,165,233,0.08));
    border-color: rgba(16,185,129,0.2);
}
.arch-node.worker:hover { box-shadow: 0 0 30px rgba(16,185,129,0.15); }
.arch-node.mcp {
    background: linear-gradient(135deg, rgba(245,158,11,0.1), rgba(236,72,153,0.08));
    border-color: rgba(245,158,11,0.2);
}
.arch-node.mcp:hover { box-shadow: var(--glow-accent); }

.arch-node-icon { font-size: 28px; }
.arch-node-title { font-size: 14px; font-weight: 700; color: var(--text-primary); }
.arch-node-desc { font-size: 12px; color: var(--text-muted); text-align: center; }

.arch-connector {
    display: flex; align-items: center; justify-content: center; padding: 8px 0;
}
.arch-connector-line {
    width: 2px; height: 32px;
    background: linear-gradient(to bottom, var(--primary), var(--secondary));
    position: relative;
}
.arch-connector-line::before, .arch-connector-line::after {
    content: ''; position: absolute; left: 50%; transform: translateX(-50%);
    width: 8px; height: 8px; border-radius: 50%;
}
.arch-connector-line::before { top: -4px; background: var(--primary); box-shadow: 0 0 10px var(--primary); }
.arch-connector-line::after { bottom: -4px; background: var(--secondary); box-shadow: 0 0 10px var(--secondary); }

.arch-label {
    font-size: 11px; font-weight: 700; color: var(--text-muted);
    letter-spacing: 2px; text-transform: uppercase; padding: 4px 16px;
    background: var(--bg-secondary); border-radius: var(--radius-full);
    border: 1px solid var(--border);
}

.level-section { padding: 80px 0; }

.level-tabs {
    display: flex; align-items: center; justify-content: center; gap: 8px;
    margin-bottom: 48px; padding: 6px; background: var(--bg-card);
    border-radius: var(--radius-lg); border: 1px solid var(--border);
    width: fit-content; margin-left: auto; margin-right: auto;
}
.level-tab {
    padding: 12px 32px; border-radius: var(--radius-md); font-size: 15px; font-weight: 600;
    color: var(--text-secondary); cursor: pointer; transition: var(--transition-normal);
    border: none; background: transparent;
}
.level-tab:hover { color: var(--text-primary); }
.level-tab.active-beginner { background: linear-gradient(135deg, rgba(16,185,129,0.2), rgba(16,185,129,0.1)); color: var(--accent-green); border: 1px solid rgba(16,185,129,0.3); }
.level-tab.active-intermediate { background: linear-gradient(135deg, rgba(14,165,233,0.2), rgba(14,165,233,0.1)); color: var(--secondary); border: 1px solid rgba(14,165,233,0.3); }
.level-tab.active-advanced { background: linear-gradient(135deg, rgba(168,85,247,0.2), rgba(236,72,153,0.1)); color: var(--accent-purple); border: 1px solid rgba(168,85,247,0.3); }

.level-panel { display: none; animation: fadeInUp 0.4s ease; }
.level-panel.active { display: block; }

.level-card {
    background: var(--bg-card); backdrop-filter: blur(12px);
    border: 1px solid var(--border); border-radius: var(--radius-xl);
    padding: 40px; position: relative; overflow: hidden;
}
.level-card::before {
    content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px;
}
.level-card.beginner::before { background: linear-gradient(90deg, var(--accent-green), var(--secondary)); }
.level-card.intermediate::before { background: linear-gradient(90deg, var(--secondary), var(--primary)); }
.level-card.advanced::before { background: linear-gradient(90deg, var(--accent-purple), var(--accent-pink)); }

.level-card h3 {
    font-size: 24px; font-weight: 700; margin-bottom: 16px;
    display: flex; align-items: center; gap: 12px;
}
.level-card p { color: var(--text-secondary); margin-bottom: 20px; line-height: 1.8; }

.step-list { margin: 24px 0; }
.step-item {
    display: flex; gap: 20px; padding: 24px 0;
    border-bottom: 1px solid var(--border);
}
.step-item:last-child { border-bottom: none; }
.step-number {
    width: 44px; height: 44px; min-width: 44px; border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    font-size: 16px; font-weight: 700; color: white;
}
.step-number.green { background: linear-gradient(135deg, var(--accent-green), #059669); }
.step-number.blue { background: linear-gradient(135deg, var(--secondary), var(--primary)); }
.step-number.purple { background: linear-gradient(135deg, var(--accent-purple), var(--accent-pink)); }
.step-content h4 { font-size: 17px; font-weight: 600; margin-bottom: 8px; }
.step-content p { font-size: 14px; color: var(--text-secondary); line-height: 1.7; margin-bottom: 8px; }

.code-block {
    background: #0d1117; border: 1px solid var(--border);
    border-radius: var(--radius-md); overflow: hidden; margin: 16px 0;
}
.code-header {
    display: flex; align-items: center; justify-content: space-between;
    padding: 10px 16px; background: rgba(255,255,255,0.03);
    border-bottom: 1px solid var(--border);
}
.code-lang { font-size: 12px; color: var(--text-muted); font-weight: 600; text-transform: uppercase; letter-spacing: 0.5px; }
.code-copy {
    padding: 4px 12px; background: var(--bg-tertiary); border: 1px solid var(--border);
    border-radius: var(--radius-sm); color: var(--text-secondary); font-size: 12px;
    cursor: pointer; transition: var(--transition-fast);
}
.code-copy:hover { background: var(--primary); color: white; border-color: var(--primary); }
.code-copy.copied { background: var(--accent-green); border-color: var(--accent-green); color: white; }
.code-block pre {
    padding: 20px; overflow-x: auto;
    font-family: 'JetBrains Mono', 'Fira Code', 'Consolas', monospace;
    font-size: 13px; line-height: 1.7; color: #e6edf3;
}
.code-block code { font-family: inherit; }

.alert {
    padding: 16px 20px; border-radius: var(--radius-md); margin: 20px 0;
    display: flex; gap: 12px; align-items: flex-start; font-size: 14px;
}
.alert-info { background: rgba(14,165,233,0.08); border: 1px solid rgba(14,165,233,0.2); color: #7dd3fc; }
.alert-warning { background: rgba(245,158,11,0.08); border: 1px solid rgba(245,158,11,0.2); color: #fcd34d; }
.alert-success { background: rgba(16,185,129,0.08); border: 1px solid rgba(16,185,129,0.2); color: #6ee7b7; }
.alert-danger { background: rgba(239,68,68,0.08); border: 1px solid rgba(239,68,68,0.2); color: #fca5a5; }

.resource-section { padding: 100px 0; position: relative; }
.resource-section::before {
    content: ''; position: absolute; top: 0; left: 0; right: 0; height: 1px;
    background: linear-gradient(90deg, transparent, var(--secondary), transparent);
}

.resource-grid {
    display: grid; grid-template-columns: repeat(auto-fit, minmax(340px, 1fr)); gap: 24px;
}

.resource-card {
    background: var(--bg-card); backdrop-filter: blur(12px);
    border: 1px solid var(--border); border-radius: var(--radius-lg);
    padding: 32px; transition: var(--transition-normal); position: relative; overflow: hidden;
    text-decoration: none; color: inherit; display: block;
}
.resource-card::before {
    content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px;
    opacity: 0; transition: var(--transition-normal);
}
.resource-card:hover {
    transform: translateY(-6px); border-color: var(--border-hover);
    box-shadow: var(--shadow-xl), var(--glow-primary);
}
.resource-card:hover::before { opacity: 1; }
.resource-card.mcp::before { background: linear-gradient(90deg, var(--accent), var(--accent-pink)); }
.resource-card.skill::before { background: linear-gradient(90deg, var(--accent-green), var(--secondary)); }

.resource-card-icon {
    width: 52px; height: 52px; border-radius: var(--radius-md);
    display: flex; align-items: center; justify-content: center;
    font-size: 24px; margin-bottom: 20px;
}
.resource-card-icon.mcp { background: linear-gradient(135deg, rgba(245,158,11,0.15), rgba(236,72,153,0.12)); border: 1px solid rgba(245,158,11,0.2); }
.resource-card-icon.skill { background: linear-gradient(135deg, rgba(16,185,129,0.15), rgba(14,165,233,0.12)); border: 1px solid rgba(16,185,129,0.2); }

.resource-card h3 { font-size: 18px; font-weight: 700; margin-bottom: 8px; color: var(--text-primary); }
.resource-card p { font-size: 14px; color: var(--text-secondary); line-height: 1.7; margin-bottom: 16px; }
.resource-card .tag {
    display: inline-block; padding: 4px 10px; border-radius: var(--radius-full);
    font-size: 11px; font-weight: 600; margin-right: 6px; margin-bottom: 6px;
}
.tag-mcp { background: rgba(245,158,11,0.12); color: var(--accent); border: 1px solid rgba(245,158,11,0.2); }
.tag-skill { background: rgba(16,185,129,0.12); color: var(--accent-green); border: 1px solid rgba(16,185,129,0.2); }
.tag-free { background: rgba(14,165,233,0.12); color: var(--secondary); border: 1px solid rgba(14,165,233,0.2); }
.tag-official { background: rgba(168,85,247,0.12); color: var(--accent-purple); border: 1px solid rgba(168,85,247,0.2); }
.tag-community { background: rgba(236,72,153,0.12); color: var(--accent-pink); border: 1px solid rgba(236,72,153,0.2); }

.features-grid {
    display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 20px;
}
.feature-item {
    display: flex; gap: 16px; padding: 24px;
    background: var(--bg-card); border: 1px solid var(--border);
    border-radius: var(--radius-md); transition: var(--transition-normal);
}
.feature-item:hover { border-color: var(--border-hover); transform: translateX(4px); }
.feature-icon {
    width: 44px; height: 44px; min-width: 44px; border-radius: var(--radius-sm);
    display: flex; align-items: center; justify-content: center; font-size: 20px;
    background: linear-gradient(135deg, rgba(99,102,241,0.12), rgba(14,165,233,0.1));
}
.feature-content h4 { font-size: 16px; font-weight: 600; margin-bottom: 6px; }
.feature-content p { font-size: 13px; color: var(--text-secondary); line-height: 1.6; }

.table-wrapper {
    overflow-x: auto; margin: 20px 0; border-radius: var(--radius-md);
    border: 1px solid var(--border);
}
table { width: 100%; border-collapse: collapse; font-size: 14px; }
thead { background: rgba(255,255,255,0.03); }
th {
    padding: 12px 16px; text-align: left; font-weight: 600; color: var(--text-secondary);
    font-size: 12px; text-transform: uppercase; letter-spacing: 0.5px;
    border-bottom: 1px solid var(--border);
}
td { padding: 14px 16px; border-bottom: 1px solid var(--border); color: var(--text-secondary); }
tbody tr { transition: var(--transition-fast); }
tbody tr:hover { background: rgba(255,255,255,0.02); }
tbody tr:last-child td { border-bottom: none; }

.page-layout {
    display: grid; grid-template-columns: 260px 1fr; gap: 48px;
    padding-top: 100px; padding-bottom: 80px; min-height: 100vh;
}
.sidebar { position: sticky; top: 100px; height: fit-content; max-height: calc(100vh - 120px); overflow-y: auto; scrollbar-width: thin; scrollbar-color: var(--border) transparent; }
.sidebar::-webkit-scrollbar { width: 4px; }
.sidebar::-webkit-scrollbar-track { background: transparent; }
.sidebar::-webkit-scrollbar-thumb { background: var(--border); border-radius: 4px; }
.sidebar::-webkit-scrollbar-thumb:hover { background: var(--border-hover); }
.sidebar-nav {
    background: var(--bg-card); backdrop-filter: blur(12px);
    border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 20px;
}
.sidebar-title {
    font-size: 12px; font-weight: 700; color: var(--text-muted);
    text-transform: uppercase; letter-spacing: 1px; margin-bottom: 12px;
    padding-bottom: 12px; border-bottom: 1px solid var(--border);
}
.sidebar-menu { list-style: none; }
.sidebar-menu li { margin-bottom: 1px; }
.sidebar-menu a {
    display: flex; align-items: center; gap: 6px; padding: 6px 10px;
    border-radius: var(--radius-sm); color: var(--text-secondary);
    font-size: 12px; font-weight: 500; transition: var(--transition-fast); text-decoration: none;
    white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.sidebar-menu a:hover, .sidebar-menu a.active {
    background: rgba(99,102,241,0.1); color: var(--primary-light); text-decoration: none;
}

.main-content { max-width: 840px; }
.content-header { margin-bottom: 48px; }
.content-header h1 { font-size: 36px; font-weight: 800; line-height: 1.2; margin-bottom: 12px; letter-spacing: -0.02em; }
.content-header p { font-size: 17px; color: var(--text-secondary); line-height: 1.7; }
.content-section { margin-bottom: 48px; }
.content-section h2 { font-size: 26px; font-weight: 700; margin-bottom: 16px; letter-spacing: -0.01em; }
.content-section h3 { font-size: 20px; font-weight: 600; margin-top: 32px; margin-bottom: 12px; }
.content-section p { color: var(--text-secondary); margin-bottom: 14px; line-height: 1.8; }
.content-section ul, .content-section ol { margin: 14px 0; padding-left: 24px; }
.content-section li { color: var(--text-secondary); margin-bottom: 8px; line-height: 1.7; }
.content-section strong { color: var(--text-primary); font-weight: 600; }

.feature-card {
    background: var(--bg-card); border: 1px solid var(--border);
    border-radius: var(--radius-lg); padding: 28px; margin-bottom: 20px;
}
.feature-card h3 { font-size: 18px; font-weight: 600; margin-bottom: 10px; display: flex; align-items: center; gap: 10px; }
.feature-card p { font-size: 14px; color: var(--text-secondary); line-height: 1.7; margin-bottom: 12px; }

.faq-item { margin-bottom: 20px; }
.faq-item h3 { font-size: 16px; font-weight: 600; margin-bottom: 8px; }
.faq-item p, .faq-item ul { font-size: 14px; color: var(--text-secondary); }

.page-nav {
    display: flex; justify-content: space-between; align-items: center;
    padding-top: 40px; margin-top: 56px; border-top: 1px solid var(--border); gap: 20px;
}
.page-nav a {
    display: flex; align-items: center; gap: 10px; padding: 14px 20px;
    background: var(--bg-card); border: 1px solid var(--border);
    border-radius: var(--radius-md); color: var(--text-secondary);
    font-size: 13px; font-weight: 500; transition: var(--transition-normal);
    text-decoration: none; max-width: 45%;
}
.page-nav a:hover { border-color: var(--border-hover); color: var(--primary-light); transform: translateY(-2px); text-decoration: none; }

.footer {
    background: var(--bg-primary); border-top: 1px solid var(--border);
    padding: 48px 0 32px; margin-top: 80px;
}
.footer-grid {
    display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 48px; margin-bottom: 40px;
}
.footer-brand p { color: var(--text-secondary); margin-top: 12px; font-size: 14px; line-height: 1.7; max-width: 320px; }
.footer-links h4 { font-size: 13px; font-weight: 700; color: var(--text-primary); margin-bottom: 16px; text-transform: uppercase; letter-spacing: 0.5px; }
.footer-links a { display: block; color: var(--text-secondary); font-size: 14px; margin-bottom: 10px; transition: var(--transition-fast); }
.footer-links a:hover { color: var(--primary-light); }
.footer-bottom {
    display: flex; justify-content: space-between; align-items: center;
    padding-top: 24px; border-top: 1px solid var(--border);
    font-size: 13px; color: var(--text-muted);
}

.mcp-category { margin-bottom: 40px; }
.mcp-category h3 {
    font-size: 20px; font-weight: 700; margin-bottom: 20px;
    display: flex; align-items: center; gap: 10px;
    padding-bottom: 12px; border-bottom: 1px solid var(--border);
}

.skill-category { margin-bottom: 40px; }
.skill-category h3 {
    font-size: 20px; font-weight: 700; margin-bottom: 20px;
    display: flex; align-items: center; gap: 10px;
    padding-bottom: 12px; border-bottom: 1px solid var(--border);
}

.comparison-table { margin: 24px 0; }
.comparison-row {
    display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 16px; margin-bottom: 12px;
}
.comparison-cell {
    padding: 16px; border-radius: var(--radius-md);
    border: 1px solid var(--border); background: var(--bg-card);
}
.comparison-cell.header {
    background: rgba(99,102,241,0.08); border-color: rgba(99,102,241,0.2);
    font-weight: 700; font-size: 14px; text-align: center;
}
.comparison-cell.label { font-weight: 600; font-size: 13px; color: var(--text-primary); }
.comparison-cell.value { font-size: 13px; color: var(--text-secondary); }

.flow-diagram {
    display: flex; align-items: center; justify-content: center; gap: 12px;
    padding: 32px; flex-wrap: wrap;
}
.flow-node {
    padding: 12px 20px; border-radius: var(--radius-md);
    border: 1px solid var(--border); background: var(--bg-secondary);
    font-size: 13px; font-weight: 600; text-align: center;
    transition: var(--transition-normal);
}
.flow-node:hover { transform: scale(1.05); border-color: var(--border-hover); }
.flow-node.hermes { background: linear-gradient(135deg, rgba(99,102,241,0.15), rgba(14,165,233,0.1)); border-color: rgba(99,102,241,0.3); }
.flow-node.openclaw { background: linear-gradient(135deg, rgba(16,185,129,0.12), rgba(14,165,233,0.08)); border-color: rgba(16,185,129,0.25); }
.flow-node.mcp { background: linear-gradient(135deg, rgba(245,158,11,0.12), rgba(236,72,153,0.08)); border-color: rgba(245,158,11,0.25); }
.flow-arrow { color: var(--text-muted); font-size: 20px; }

.tooltip {
    position: relative; cursor: help;
}
.tooltip::after {
    content: attr(data-tip); position: absolute; bottom: 100%; left: 50%;
    transform: translateX(-50%) translateY(-4px); padding: 6px 12px;
    background: var(--bg-tertiary); border: 1px solid var(--border);
    border-radius: var(--radius-sm); font-size: 12px; color: var(--text-secondary);
    white-space: nowrap; opacity: 0; pointer-events: none;
    transition: var(--transition-fast); z-index: 10;
}
.tooltip:hover::after { opacity: 1; transform: translateX(-50%) translateY(-8px); }

.animate-on-scroll { opacity: 0; transform: translateY(20px); transition: opacity 0.6s ease, transform 0.6s ease; }
.animate-on-scroll.visible { opacity: 1; transform: translateY(0); }

@media (max-width: 1024px) {
    .page-layout { grid-template-columns: 1fr; padding-top: 90px; }
    .sidebar { position: static; margin-bottom: 24px; max-height: none; overflow-y: visible; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .arch-layer { flex-wrap: wrap; }
    .comparison-row { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
    .header-inner { padding: 0 16px; }
    .nav {
        display: none; position: fixed; top: 72px; left: 0; right: 0;
        background: var(--bg-secondary); flex-direction: column; padding: 20px; gap: 0;
        border-bottom: 1px solid var(--border);
    }
    .nav.open { display: flex; }
    .nav a { padding: 12px 0; width: 100%; border-bottom: 1px solid var(--border); }
    .mobile-toggle { display: flex; }
    .header-actions .btn { display: none; }
    .hero { padding: 100px 16px 60px; }
    .hero h1 { font-size: 32px; }
    .hero-desc { font-size: 16px; }
    .hero-actions .btn { padding: 12px 24px; font-size: 14px; }
    .level-tabs { flex-direction: column; width: 100%; }
    .level-tab { width: 100%; text-align: center; }
    .resource-grid { grid-template-columns: 1fr; }
    .features-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; gap: 24px; }
    .footer-bottom { flex-direction: column; gap: 12px; text-align: center; }
    .page-nav { flex-direction: column; }
    .page-nav a { max-width: 100%; }
    .flow-diagram { flex-direction: column; }
    .flow-arrow { transform: rotate(90deg); }
    .arch-diagram { padding: 24px; }
    .filter-bar { flex-wrap: wrap; }
    .filter-bar .search-input { width: 100%; }
    .lib-stats { flex-direction: column; gap: 12px; }
    .lib-toolbar { flex-wrap: wrap; }
    .lib-search { width: 100%; }
    .lib-search input { width: 100%; }
}

.lib-toolbar {
    display: flex; align-items: center; gap: 12px; margin-bottom: 32px;
    padding: 16px 20px; background: var(--bg-card); backdrop-filter: blur(12px);
    border: 1px solid var(--border); border-radius: var(--radius-lg);
    position: relative; z-index: 10;
    box-shadow: 0 2px 12px rgba(0,0,0,0.15);
}
.lib-search { flex: 1; min-width: 0; }
.lib-search input {
    width: 100%; padding: 10px 16px; background: var(--bg-secondary);
    border: 1px solid var(--border); border-radius: var(--radius-md);
    color: var(--text-primary); font-size: 14px; outline: none;
    transition: var(--transition-fast); font-family: inherit;
    box-sizing: border-box;
}
.lib-search input:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(99,102,241,0.1); }
.lib-search input::placeholder { color: var(--text-muted); }
.lib-filters { display: flex; gap: 6px; flex-wrap: wrap; flex-shrink: 0; align-items: center; }

.filter-bar {
    display: flex; align-items: center; gap: 12px; margin-bottom: 32px;
    padding: 16px 20px; background: var(--bg-card); backdrop-filter: blur(12px);
    border: 1px solid var(--border); border-radius: var(--radius-lg);
    position: relative; z-index: 10;
}
.filter-bar .search-input {
    flex: 1; padding: 10px 16px; background: var(--bg-secondary);
    border: 1px solid var(--border); border-radius: var(--radius-md);
    color: var(--text-primary); font-size: 14px; outline: none;
    transition: var(--transition-fast);
}
.filter-bar .search-input:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(99,102,241,0.1); }
.filter-bar .search-input::placeholder { color: var(--text-muted); }

.filter-tags { display: flex; gap: 6px; flex-wrap: wrap; }
.filter-tag {
    padding: 6px 14px; border-radius: var(--radius-full); font-size: 12px; font-weight: 600;
    cursor: pointer; transition: var(--transition-fast); border: 1px solid var(--border);
    background: var(--bg-secondary); color: var(--text-secondary);
}
.filter-tag:hover { border-color: var(--border-hover); color: var(--text-primary); }
.filter-tag.active { background: rgba(99,102,241,0.15); border-color: rgba(99,102,241,0.3); color: var(--primary-light); }

.lib-stats {
    display: flex; align-items: center; gap: 24px; margin-bottom: 32px;
    padding: 20px 24px; background: var(--bg-card); border: 1px solid var(--border);
    border-radius: var(--radius-lg);
}
.lib-stat { text-align: center; }
.lib-stat-value { font-size: 28px; font-weight: 800; background: linear-gradient(135deg, var(--primary-light), var(--secondary)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.lib-stat-label { font-size: 12px; color: var(--text-muted); margin-top: 4px; }
.lib-stat-divider { width: 1px; height: 40px; background: var(--border); }

.lib-card {
    background: var(--bg-card); backdrop-filter: blur(8px);
    border: 1px solid var(--border); border-radius: var(--radius-md);
    padding: 20px; transition: var(--transition-normal); position: relative;
}
.lib-card:hover { border-color: var(--border-hover); transform: translateY(-2px); box-shadow: var(--glow-primary); }
.lib-card-header { display: flex; align-items: flex-start; justify-content: space-between; gap: 12px; margin-bottom: 8px; }
.lib-card-name { font-size: 15px; font-weight: 700; color: var(--text-primary); display: flex; align-items: center; gap: 8px; }
.lib-card-badge {
    font-size: 10px; font-weight: 700; padding: 2px 8px; border-radius: var(--radius-full);
    text-transform: uppercase; letter-spacing: 0.5px;
}
.lib-card-badge.official { background: rgba(99,102,241,0.15); color: var(--primary-light); border: 1px solid rgba(99,102,241,0.25); }
.lib-card-badge.community { background: rgba(16,185,129,0.12); color: var(--accent-green); border: 1px solid rgba(16,185,129,0.2); }
.lib-card-badge.trending { background: rgba(245,158,11,0.12); color: var(--accent); border: 1px solid rgba(245,158,11,0.2); }
.lib-card-desc { font-size: 13px; color: var(--text-secondary); line-height: 1.6; margin-bottom: 10px; }
.lib-card-meta { display: flex; align-items: center; gap: 12px; font-size: 12px; color: var(--text-muted); flex-wrap: wrap; }
.lib-card-meta span { display: flex; align-items: center; gap: 4px; }
.lib-card-tags { display: flex; gap: 4px; flex-wrap: wrap; margin-top: 8px; }
.lib-card-tag {
    font-size: 10px; padding: 2px 8px; border-radius: var(--radius-full);
    background: rgba(148,163,184,0.06); color: var(--text-muted); border: 1px solid var(--border);
}
.lib-card-install {
    margin-top: 10px; padding: 8px 12px; background: rgba(0,0,0,0.2);
    border-radius: var(--radius-sm); font-family: 'JetBrains Mono', monospace;
    font-size: 11px; color: var(--accent-green); display: flex; align-items: center;
    justify-content: space-between; gap: 8px;
}
.lib-card-install code { color: var(--accent-green); font-family: inherit; }
.lib-card-install .copy-btn {
    padding: 2px 8px; background: var(--bg-tertiary); border: 1px solid var(--border);
    border-radius: var(--radius-sm); color: var(--text-muted); font-size: 10px;
    cursor: pointer; transition: var(--transition-fast);
}
.lib-card-install .copy-btn:hover { background: var(--primary); color: white; border-color: var(--primary); }

.lib-grid {
    display: grid; grid-template-columns: repeat(auto-fill, minmax(340px, 1fr)); gap: 16px;
}
.lib-category-title {
    font-size: 18px; font-weight: 700; margin: 40px 0 16px; padding-bottom: 12px;
    border-bottom: 1px solid var(--border); display: flex; align-items: center; gap: 10px;
}
.lib-category-title .cat-icon { font-size: 22px; }
.lib-category-title .cat-count { font-size: 12px; color: var(--text-muted); font-weight: 500; }

.no-results {
    text-align: center; padding: 60px 20px; color: var(--text-muted);
}
.no-results .emoji { font-size: 48px; margin-bottom: 16px; }
.no-results p { font-size: 15px; }