.app-shell[data-v-81898711]{min-height:100vh;display:flex}.sidebar[data-v-81898711]{background:var(--color-surface);border-right:1px solid var(--color-border);flex-direction:column;width:236px;height:100vh;padding:18px 14px;display:flex;position:sticky;top:0}.brand[data-v-81898711]{align-items:center;gap:10px;padding:4px 8px 18px;display:flex}.brand .brand-logo[data-v-81898711]{background:linear-gradient(135deg, var(--color-primary), #8f5cf0);color:#fff;border-radius:9px;place-items:center;width:34px;height:34px;font-size:17px;font-weight:700;display:grid}.brand .brand-name[data-v-81898711]{color:var(--color-text);font-size:15px;font-weight:600}.nav[data-v-81898711]{flex-direction:column;flex:1;gap:4px;display:flex}.nav-item[data-v-81898711]{border-radius:var(--radius-sm);color:var(--color-text-2);padding:9px 12px;font-size:14px;transition:background .15s,color .15s}.nav-item[data-v-81898711]:hover{background:var(--color-surface-2);color:var(--color-text)}.nav-item.router-link-active[data-v-81898711]{background:var(--color-primary-bg);color:var(--color-primary);font-weight:500}.sidebar-footer[data-v-81898711]{color:var(--color-text-muted);border-top:1px solid var(--color-border);padding:10px 12px 0;font-size:12px;line-height:1.8}.main-wrapper[data-v-81898711]{flex-direction:column;flex:1;min-width:0;display:flex}.topbar[data-v-81898711]{z-index:10;background:color-mix(in srgb, var(--color-bg) 82%, transparent);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-bottom:1px solid var(--color-border);justify-content:space-between;align-items:center;gap:16px;height:56px;padding:0 28px;display:flex;position:sticky;top:0}.search-entry[data-v-81898711]{background:var(--color-surface);border:1px solid var(--color-border);width:320px;color:var(--color-text-muted);border-radius:999px;align-items:center;gap:8px;padding:7px 14px;font-size:13px;transition:border-color .15s;display:inline-flex}.search-entry[data-v-81898711]:hover{border-color:var(--color-primary);color:var(--color-text-2)}.theme-btn[data-v-81898711]{border:1px solid var(--color-border);background:var(--color-surface);color:var(--color-text-2);border-radius:999px;padding:6px 14px;font-size:13px;transition:all .15s}.theme-btn[data-v-81898711]:hover{border-color:var(--color-primary);color:var(--color-primary)}.content[data-v-81898711]{flex:1;width:100%;max-width:1080px;margin:0 auto;padding:26px 28px 60px}@media (width<=640px){.app-shell[data-v-81898711]{flex-direction:column}.sidebar[data-v-81898711]{border-right:none;border-bottom:1px solid var(--color-border);flex-direction:row;align-items:center;width:100%;height:auto;padding:10px 14px;position:static}.nav[data-v-81898711]{flex-direction:row;overflow-x:auto}.sidebar-footer[data-v-81898711],.brand-name[data-v-81898711]{display:none}.topbar[data-v-81898711]{padding:0 16px}.search-entry[data-v-81898711]{flex:1;width:auto}.content[data-v-81898711]{padding:18px 16px 48px}}:root{--color-bg:#f5f6fa;--color-surface:#fff;--color-surface-2:#f0f2f8;--color-border:#e2e5ee;--color-text:#20242e;--color-text-2:#576070;--color-text-muted:#8a91a3;--color-primary:#4a63f0;--color-primary-hover:#3a52d8;--color-primary-bg:#eef1ff;--color-success:#1f9d63;--color-danger:#e0454a;--color-warning:#d9830e;--color-code-bg:#f3f4f8;--color-hljs-bg:#f7f8fa;--shadow-sm:0 1px 3px #171d3012;--shadow-md:0 6px 20px #171d3017;--radius-sm:6px;--radius-md:10px;--radius-lg:14px;--sidebar-width:236px;--header-height:56px}:root[data-theme=dark]{--color-bg:#10131b;--color-surface:#171b26;--color-surface-2:#1e2332;--color-border:#2b3142;--color-text:#e8eaf1;--color-text-2:#a8afc1;--color-text-muted:#6d7486;--color-primary:#7185ff;--color-primary-hover:#8b9bff;--color-primary-bg:#1c2340;--color-success:#35c88a;--color-danger:#f06065;--color-warning:#e6a23c;--color-code-bg:#1f2430;--color-hljs-bg:#1b2029;--shadow-sm:0 1px 3px #00000059;--shadow-md:0 8px 24px #00000073}*,:before,:after{box-sizing:border-box;margin:0;padding:0}html,body,#app{height:100%}body{color:var(--color-text);background:var(--color-bg);-webkit-font-smoothing:antialiased;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Hiragino Sans GB,Microsoft YaHei,sans-serif;font-size:14px;line-height:1.65;transition:background-color .25s,color .25s}a{color:var(--color-primary);text-decoration:none}a:hover{color:var(--color-primary-hover)}button{cursor:pointer;font-family:inherit}input,textarea{font-family:inherit}ul,ol{list-style:none}.card{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-md);box-shadow:var(--shadow-sm)}.tag{background:var(--color-surface-2);color:var(--color-text-2);border:1px solid var(--color-border);border-radius:999px;align-items:center;gap:4px;padding:2px 8px;font-size:12px;line-height:1.6;display:inline-flex}.tag--primary{background:var(--color-primary-bg);color:var(--color-primary);border-color:#0000}.difficulty-1{color:var(--color-success)}.difficulty-2{color:var(--color-warning)}.difficulty-3{color:var(--color-danger)}.hljs{color:var(--color-text);background:0 0}:root[data-theme=dark] .hljs{color:var(--color-text)}:root[data-theme=dark] .hljs-comment,:root[data-theme=dark] .hljs-quote{color:#7f8a9e;font-style:italic}:root[data-theme=dark] .hljs-keyword,:root[data-theme=dark] .hljs-selector-tag,:root[data-theme=dark] .hljs-literal,:root[data-theme=dark] .hljs-doctag{color:#c586c0}:root[data-theme=dark] .hljs-string,:root[data-theme=dark] .hljs-regexp,:root[data-theme=dark] .hljs-addition{color:#9ece6a}:root[data-theme=dark] .hljs-number,:root[data-theme=dark] .hljs-symbol,:root[data-theme=dark] .hljs-bullet,:root[data-theme=dark] .hljs-link{color:#ff9e64}:root[data-theme=dark] .hljs-title,:root[data-theme=dark] .hljs-section,:root[data-theme=dark] .hljs-function .hljs-title{color:#7aa2f7}:root[data-theme=dark] .hljs-attr,:root[data-theme=dark] .hljs-variable,:root[data-theme=dark] .hljs-template-variable,:root[data-theme=dark] .hljs-selector-attr,:root[data-theme=dark] .hljs-selector-class,:root[data-theme=dark] .hljs-params{color:#d19a66}:root[data-theme=dark] .hljs-built_in,:root[data-theme=dark] .hljs-type,:root[data-theme=dark] .hljs-class .hljs-title{color:#e0af68}:root[data-theme=dark] .hljs-meta,:root[data-theme=dark] .hljs-name{color:#bb9af7}:root[data-theme=dark] .hljs-deletion{color:#f7768e}:root[data-theme=dark] .hljs-emphasis{font-style:italic}:root[data-theme=dark] .hljs-strong{font-weight:700}:root:not([data-theme=dark]) .hljs-comment,:root:not([data-theme=dark]) .hljs-quote{color:#8a94a6;font-style:italic}:root:not([data-theme=dark]) .hljs-keyword,:root:not([data-theme=dark]) .hljs-selector-tag,:root:not([data-theme=dark]) .hljs-literal,:root:not([data-theme=dark]) .hljs-doctag{color:#8250df}:root:not([data-theme=dark]) .hljs-string,:root:not([data-theme=dark]) .hljs-regexp,:root:not([data-theme=dark]) .hljs-addition{color:#0a7d30}:root:not([data-theme=dark]) .hljs-number,:root:not([data-theme=dark]) .hljs-symbol,:root:not([data-theme=dark]) .hljs-bullet,:root:not([data-theme=dark]) .hljs-link{color:#953800}:root:not([data-theme=dark]) .hljs-title,:root:not([data-theme=dark]) .hljs-section,:root:not([data-theme=dark]) .hljs-function .hljs-title{color:#0550ae}:root:not([data-theme=dark]) .hljs-attr,:root:not([data-theme=dark]) .hljs-variable,:root:not([data-theme=dark]) .hljs-template-variable,:root:not([data-theme=dark]) .hljs-selector-attr,:root:not([data-theme=dark]) .hljs-selector-class,:root:not([data-theme=dark]) .hljs-params{color:#953800}:root:not([data-theme=dark]) .hljs-built_in,:root:not([data-theme=dark]) .hljs-type,:root:not([data-theme=dark]) .hljs-class .hljs-title{color:#116329}:root:not([data-theme=dark]) .hljs-meta,:root:not([data-theme=dark]) .hljs-name{color:#6e40c9}:root:not([data-theme=dark]) .hljs-deletion{color:#a40e26}.markdown-body{color:var(--color-text);word-break:break-word;font-size:14.5px;line-height:1.8}.markdown-body h1,.markdown-body h2,.markdown-body h3,.markdown-body h4,.markdown-body h5,.markdown-body h6{margin:1.4em 0 .6em;font-weight:600;line-height:1.4}.markdown-body h1:first-child,.markdown-body h2:first-child,.markdown-body h3:first-child,.markdown-body h4:first-child,.markdown-body h5:first-child,.markdown-body h6:first-child{margin-top:0}.markdown-body h1{border-bottom:1px solid var(--color-border);padding-bottom:.3em;font-size:1.7em}.markdown-body h2{border-bottom:1px solid var(--color-border);padding-bottom:.25em;font-size:1.4em}.markdown-body h3{font-size:1.15em}.markdown-body p{margin:.7em 0}.markdown-body ul,.markdown-body ol{margin:.7em 0;padding-left:1.6em}.markdown-body ul li,.markdown-body ol li{margin:.3em 0}.markdown-body ul{list-style:outside}.markdown-body ol{list-style:decimal}.markdown-body a{color:var(--color-primary);border-bottom:1px solid #0000}.markdown-body a:hover{border-bottom-color:var(--color-primary)}.markdown-body blockquote{border-left:3px solid var(--color-primary);background:var(--color-primary-bg);border-radius:0 var(--radius-sm) var(--radius-sm) 0;color:var(--color-text-2);margin:.9em 0;padding:.3em 1em}.markdown-body blockquote p{margin:.4em 0}.markdown-body code{background:var(--color-code-bg);border-radius:4px;padding:.15em .4em;font-family:JetBrains Mono,Fira Code,Consolas,Courier New,monospace;font-size:.9em}.markdown-body pre{background:var(--color-hljs-bg);border:1px solid var(--color-border);border-radius:var(--radius-md);margin:1em 0;padding:14px 16px;line-height:1.6;overflow-x:auto}.markdown-body pre code{background:0 0;padding:0;font-size:13px}.markdown-body table{border-collapse:collapse;width:100%;margin:1em 0;font-size:13.5px;display:block;overflow-x:auto}.markdown-body table th,.markdown-body table td{border:1px solid var(--color-border);text-align:left;padding:8px 12px}.markdown-body table th{background:var(--color-surface-2);font-weight:600}.markdown-body table tr:nth-child(2n) td{background:var(--color-surface-2)}.markdown-body img{border-radius:var(--radius-md);max-width:100%}.markdown-body hr{border:none;border-top:1px solid var(--color-border);margin:1.6em 0}.markdown-body strong{font-weight:600}