:root{--bg:#fff5f8;--card-bg:#ffffff;--text:#333;--text-light:#666;--accent:#ff69b4;--border:#ffd1e8;--header-bg:#ff69b4;--header-text:#ffffff;--sidebar-title-border:#e0e0e0;}body.dark{--bg:#121014;--card-bg:#1e1b21;--text:#e8e6eb;--text-light:#b5b0bc;--accent:#ff8ac4;--border:#332836;--header-bg:#1a141f;--header-text:#f4eef6;--button-bg:#2a242e;--button-text:#e8e6eb;--button-border:#443749;--button-hover-bg:#38303b;--sidebar-title-border:#3a343f;}*{box-sizing:border-box;}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;background:var(--bg);color:var(--text);line-height:1.7;transition:background 0.3s,color 0.3s;overflow-x:hidden;}a{color:var(--accent);text-decoration:none;}header{background:var(--header-bg);color:var(--header-text);padding:0.8rem 1rem;display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:0.8rem;}.site-title{font-size:1.4rem;font-weight:700;color:var(--header-text);}nav{display:flex;gap:0.8rem;}nav a{color:var(--header-text);white-space:nowrap;}.theme-toggle{background:rgba(255,255,255,.25);border:none;color:var(--header-text);padding:6px 14px;border-radius:999px;cursor:pointer;white-space:nowrap;transition:all 0.2s ease;}body.dark .theme-toggle{background:rgba(255,255,255,.15);}.theme-toggle:hover{background:rgba(255,255,255,.35);transform:scale(1.05);}body.dark .theme-toggle:hover{background:rgba(255,255,255,.25);}.container{max-width:1200px;margin:1.5rem auto;padding:0 1rem;}.article-card{background:var(--card-bg);border-radius:14px;padding:1.6rem;border:1px solid var(--border);}.article-title{font-size:1.8rem;}.author-profile{display:flex;align-items:center;border:1px solid var(--border);border-radius:8px;padding:1.2rem;margin-bottom:2rem;background-color:var(--card-bg);color:var(--text);transition:all 0.3s ease;}.author-avatar{width:80px;height:80px;border-radius:50%;object-fit:cover;border:2px solid var(--border);margin-right:1.5rem;}.author-info{flex:1;}.author-name{font-size:1.3rem;font-weight:600;color:var(--text);margin-bottom:0.3rem;}.author-bio{font-size:0.95rem;color:var(--text-light);line-height:1.5;}@media (max-width:900px){header{justify-content:center;}.site-title{width:100%;text-align:center;}nav{justify-content:center;}.author-profile{flex-direction:column;text-align:center;}.author-avatar{margin-right:0;margin-bottom:1rem;}}