@import url("https://cdn.jsdelivr.net/gh/orioncactus/pretendard@v1.3.9/dist/web/variable/pretendardvariable-dynamic-subset.min.css");@import url("https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@400;500;600&display=swap");:root{--bg:#0b0b0d;--bg-elevated:#111114;--bg-surface:#161619;--bg-surface-hover:#1c1c20;--bg-code:#13131a;--text-primary:#ececef;--text-secondary:#9898a0;--text-tertiary:#5c5c66;--accent:#e8653a;--accent-hover:#f0784f;--accent-muted:rgba(232,101,58,0.12);--accent-border:rgba(232,101,58,0.25);--green:#34d399;--border:#222228;--border-hover:#333339;--sidebar-w:260px;--header-h:56px;--radius:10px;--radius-sm:6px;--font:"Pretendard Variable","Pretendard",-apple-system,system-ui,sans-serif;--font-mono:"JetBrains Mono","Menlo",monospace}*,:after,:before{margin:0;padding:0;box-sizing:border-box}html{scroll-behavior:smooth}body{font-family:var(--font);background:var(--bg);color:var(--text-primary);line-height:1.72;-webkit-font-smoothing:antialiased;overflow-x:hidden}a{color:inherit;text-decoration:none}img{max-width:100%}::-webkit-scrollbar{width:5px}::-webkit-scrollbar-thumb{background:var(--border);border-radius:3px}.layout{display:grid;grid-template-columns:var(--sidebar-w) 1fr;min-height:100vh}.main-content{grid-column:2;min-height:100vh}.content-wrapper{max-width:720px;margin:0 auto;padding:0 32px}.sidebar{position:fixed;top:0;left:0;width:var(--sidebar-w);height:100vh;background:var(--bg-elevated);border-right:1px solid var(--border);display:flex;flex-direction:column;z-index:200;transition:transform .3s cubic-bezier(.4,0,.2,1)}.sidebar-header{padding:20px 20px 16px;border-bottom:1px solid var(--border)}.sidebar-logo{display:flex;align-items:center;gap:10px;cursor:pointer}.sidebar-logo-icon{width:34px;height:34px;background:var(--accent);border-radius:9px;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:17px;color:#fff;flex-shrink:0}.sidebar-logo-text{font-weight:700;font-size:15px;letter-spacing:-.02em}.sidebar-logo-text small{display:block;font-size:11px;font-weight:400;color:var(--text-tertiary);margin-top:1px}.sidebar-nav{flex:1 1;overflow-y:auto;padding:16px 12px}.sidebar-search{padding:0 0 12px}.nav-section-title{font-size:10px;font-weight:700;text-transform:uppercase;letter-spacing:.1em;color:var(--text-tertiary);padding:12px 10px 6px}.nav-item{display:flex;align-items:center;gap:9px;padding:8px 10px;border-radius:var(--radius-sm);font-size:13.5px;font-weight:450;color:var(--text-secondary);transition:all .15s;cursor:pointer}.nav-item:hover{background:var(--bg-surface);color:var(--text-primary)}.nav-item.active{background:var(--accent-muted);color:var(--accent);font-weight:600}.nav-icon{font-size:15px;width:20px;text-align:center;flex-shrink:0}.nav-count{margin-left:auto;font-size:11px;font-weight:600;color:var(--text-tertiary);background:var(--bg);padding:1px 7px;border-radius:10px}.mobile-header{display:none;position:fixed;top:0;left:0;right:0;height:var(--header-h);background:rgba(11,11,13,.88);-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);border-bottom:1px solid var(--border);z-index:180;padding:0 16px;align-items:center;justify-content:space-between}.hamburger{width:36px;height:36px;display:flex;align-items:center;justify-content:center;background:none;border:1px solid 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