.layout{flex-direction:column;min-height:100vh;display:flex}.header{background:var(--color-bg);border-bottom:1px solid var(--color-border);z-index:100;box-shadow:var(--shadow-sm);position:sticky;top:0}.header-inner{max-width:var(--max-width);justify-content:space-between;align-items:center;height:64px;margin:0 auto;padding:0 24px;display:flex}.logo{color:var(--color-text);font-size:20px;font-weight:700}.logo:hover{color:var(--color-primary)}.nav{align-items:center;gap:8px;display:flex}.nav-link{border-radius:var(--radius);color:var(--color-text-secondary);padding:8px 16px;font-size:15px;transition:all .2s}.nav-link:hover{color:var(--color-primary);background:var(--color-bg-secondary)}.nav-link-login{color:var(--color-primary);border:1px solid var(--color-primary)}.nav-link-login:hover{background:var(--color-primary);color:#fff}.user-menu{background:var(--color-bg-secondary);border-radius:var(--radius);align-items:center;gap:12px;padding:8px 16px;display:flex}.user-name{color:var(--color-text);font-size:15px;font-weight:500}.logout-btn{border:1px solid var(--color-border);color:var(--color-text-secondary);background:0 0;border-radius:4px;padding:4px 12px;font-size:13px;transition:all .2s}.logout-btn:hover{border-color:var(--color-danger);color:var(--color-danger)}.main{max-width:var(--max-width);flex:1;width:100%;margin:0 auto;padding:32px 24px}.footer{background:var(--color-bg-secondary);border-top:1px solid var(--color-border);margin-top:auto}.footer-inner{max-width:var(--max-width);color:var(--color-text-secondary);justify-content:space-between;align-items:center;margin:0 auto;padding:24px;font-size:14px;display:flex}.footer-links{gap:16px;display:flex}.footer-links a{color:var(--color-text-secondary)}.footer-links a:hover{color:var(--color-primary)}.home{flex-direction:column;gap:48px;display:flex}.hero{text-align:center;padding:64px 0 48px}.hero-title{background:linear-gradient(135deg, var(--color-primary), #7c3aed);-webkit-text-fill-color:transparent;-webkit-background-clip:text;background-clip:text;margin-bottom:12px;font-size:40px;font-weight:800}.hero-subtitle{color:var(--color-text-secondary);margin-bottom:16px;font-size:20px}.hero-desc{color:var(--color-text-secondary);max-width:560px;margin:0 auto 32px;font-size:16px;line-height:1.8}.hero-actions{justify-content:center;gap:16px;display:flex}.btn{border-radius:var(--radius);align-items:center;padding:12px 28px;font-size:15px;font-weight:500;transition:all .2s;display:inline-flex}.btn-primary{background:var(--color-primary);color:#fff;border:none}.btn-primary:hover{background:var(--color-primary-dark);color:#fff}.btn-outline{color:var(--color-primary);border:1px solid var(--color-primary);background:0 0}.btn-outline:hover{background:var(--color-primary);color:#fff}.section{flex-direction:column;gap:24px;display:flex}.section-title{border-bottom:2px solid var(--color-primary);padding-bottom:12px;font-size:24px;font-weight:700;display:inline-block}.card-list{grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:20px;display:grid}.card{background:var(--color-bg);border:1px solid var(--color-border);border-radius:var(--radius);flex-direction:column;gap:8px;padding:24px;transition:all .2s;display:flex}.card:hover{box-shadow:var(--shadow-md);border-color:var(--color-primary-light)}.card-tag{width:fit-content;color:var(--color-primary);background:#eff6ff;border-radius:4px;padding:2px 10px;font-size:13px;font-weight:500;display:inline-block}.card-title{font-size:18px;font-weight:600}.card-desc{color:var(--color-text-secondary);font-size:14px;line-height:1.6}.card-date{color:var(--color-text-secondary);margin-top:auto;font-size:13px}.project-list{grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:20px;display:grid}.project-desc{color:var(--color-text-secondary);font-size:14px;line-height:1.6}.project-tags{gap:8px;margin-top:auto;display:flex}.project-tags span{background:var(--color-bg-secondary);color:var(--color-text-secondary);border-radius:4px;padding:2px 10px;font-size:13px}.more-link{align-self:flex-start;font-size:15px;font-weight:500}.about{max-width:800px;margin:0 auto}.page-title{border-bottom:2px solid var(--color-primary);margin-bottom:32px;padding-bottom:16px;font-size:32px;font-weight:800}.about-content{flex-direction:column;gap:40px;display:flex}.about-section h2{margin-bottom:16px;font-size:20px;font-weight:600}.about-section p{color:var(--color-text-secondary);margin-bottom:12px;line-height:1.8}.skill-grid{grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:16px;display:grid}.skill-item{background:var(--color-bg-secondary);border-radius:var(--radius);padding:20px}.skill-item h3{color:var(--color-primary);margin-bottom:8px;font-size:16px;font-weight:600}.skill-item p{margin-bottom:0;font-size:14px}.contact-list{flex-direction:column;gap:12px;display:flex}.contact-item{background:var(--color-bg-secondary);border-radius:var(--radius);align-items:center;gap:16px;padding:12px 16px;display:flex}.contact-label{min-width:80px;font-weight:600}.contact-item a{color:var(--color-primary)}.articles{max-width:800px;margin:0 auto}.article-list{flex-direction:column;gap:16px;display:flex}.article-item{border:1px solid var(--color-border);border-radius:var(--radius);color:inherit;gap:16px;padding:20px;transition:all .2s;display:flex}.article-item:hover{box-shadow:var(--shadow-md);border-color:var(--color-primary-light);color:inherit}.article-tag{color:var(--color-primary);background:#eff6ff;border-radius:4px;flex-shrink:0;height:fit-content;padding:4px 12px;font-size:13px;font-weight:500}.article-info{flex-direction:column;gap:6px;display:flex}.article-title{font-size:18px;font-weight:600}.article-summary{color:var(--color-text-secondary);font-size:14px;line-height:1.6}.article-date{color:var(--color-text-secondary);font-size:13px}.article-detail{max-width:800px;margin:0 auto}.back-link{margin-bottom:24px;font-size:15px;font-weight:500;display:inline-block}.article-body{background:var(--color-bg);border:1px solid var(--color-border);border-radius:var(--radius);padding:32px}.article-header{border-bottom:1px solid var(--color-border);flex-direction:column;gap:12px;margin-bottom:32px;padding-bottom:24px;display:flex}.article-header .article-tag{width:fit-content;color:var(--color-primary);background:#eff6ff;border-radius:4px;padding:4px 12px;font-size:13px;font-weight:500;display:inline-block}.article-header .article-title{font-size:28px;font-weight:800}.article-header .article-date{color:var(--color-text-secondary);font-size:14px}.article-content{color:var(--color-text-secondary);line-height:1.8}.article-content h2{color:var(--color-text);margin:24px 0 12px;font-size:22px;font-weight:700}.article-content h3{color:var(--color-text);margin:20px 0 8px;font-size:18px;font-weight:600}.article-content p{margin-bottom:12px}.not-found{text-align:center;padding:64px 0}.not-found h2{margin-bottom:16px}.projects{max-width:900px;margin:0 auto}.project-grid{grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:20px;display:grid}.project-card{background:var(--color-bg);border:1px solid var(--color-border);border-radius:var(--radius);flex-direction:column;gap:12px;padding:24px;transition:all .2s;display:flex}.project-card:hover{box-shadow:var(--shadow-md);border-color:var(--color-primary-light)}.project-name{font-size:20px;font-weight:700}.project-desc{color:var(--color-text-secondary);flex:1;font-size:14px;line-height:1.6}.project-tags{flex-wrap:wrap;gap:8px;display:flex}.project-tag{color:var(--color-primary);background:#eff6ff;border-radius:4px;padding:4px 10px;font-size:13px;font-weight:500}.guestbook{max-width:800px;margin:0 auto}.guestbook-desc{color:var(--color-text-secondary);margin-bottom:32px}.guestbook-error{border-radius:var(--radius);color:var(--color-danger);background:#fef2f2;border:1px solid #fecaca;margin-bottom:16px;padding:12px 16px;font-size:14px}.message-form{background:var(--color-bg-secondary);border-radius:var(--radius);flex-direction:column;gap:16px;margin-bottom:32px;padding:24px;display:flex}.form-group input,.form-group textarea{border:1px solid var(--color-border);border-radius:var(--radius);background:var(--color-bg);outline:none;padding:10px 14px;font-size:15px;transition:border-color .2s}.form-group input:focus,.form-group textarea:focus{border-color:var(--color-primary)}.form-group input:disabled,.form-group textarea:disabled{background:var(--color-bg-secondary);cursor:not-allowed}.form-group textarea{resize:vertical}.message-list{flex-direction:column;gap:16px;display:flex}.loading,.empty{text-align:center;color:var(--color-text-secondary);padding:40px}.message-item{border:1px solid var(--color-border);border-radius:var(--radius);padding:20px}.message-header{justify-content:space-between;align-items:center;margin-bottom:8px;display:flex}.message-author{color:var(--color-primary);font-weight:600}.message-date{color:var(--color-text-secondary);font-size:13px}.message-content{color:var(--color-text-secondary);line-height:1.6}.auth-page{justify-content:center;align-items:center;min-height:60vh;display:flex}.auth-card{background:var(--color-bg);border:1px solid var(--color-border);border-radius:var(--radius);width:100%;max-width:420px;box-shadow:var(--shadow-md);padding:40px}.auth-title{margin-bottom:8px;font-size:28px;font-weight:800}.auth-subtitle{color:var(--color-text-secondary);margin-bottom:32px}.auth-form{flex-direction:column;gap:16px;display:flex}.auth-error{border-radius:var(--radius);color:var(--color-danger);background:#fef2f2;border:1px solid #fecaca;padding:12px 16px;font-size:14px}.form-group{flex-direction:column;gap:6px;display:flex}.form-group label{font-size:14px;font-weight:600}.form-group input{border:1px solid var(--color-border);border-radius:var(--radius);background:var(--color-bg);outline:none;padding:10px 14px;font-size:15px;transition:border-color .2s}.form-group input:focus{border-color:var(--color-primary)}.form-group input:disabled{background:var(--color-bg-secondary);cursor:not-allowed}.btn-block{justify-content:center;width:100%;margin-top:8px}.auth-switch{text-align:center;color:var(--color-text-secondary);margin-top:24px;font-size:14px}.auth-switch a{color:var(--color-primary);font-weight:500}:root{--color-primary:#2563eb;--color-primary-light:#3b82f6;--color-primary-dark:#1d4ed8;--color-bg:#fff;--color-bg-secondary:#f8fafc;--color-text:#1e293b;--color-text-secondary:#64748b;--color-border:#e2e8f0;--color-success:#10b981;--color-danger:#ef4444;--shadow-sm:0 1px 2px #0000000d;--shadow-md:0 4px 6px -1px #0000001a, 0 2px 4px -2px #0000001a;--shadow-lg:0 10px 15px -3px #0000001a, 0 4px 6px -4px #0000001a;--radius:8px;--max-width:1200px}*{box-sizing:border-box;margin:0;padding:0}body{color:var(--color-text);background:var(--color-bg);-webkit-font-smoothing:antialiased;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,Noto Sans SC,sans-serif;line-height:1.6}a{color:var(--color-primary);text-decoration:none}a:hover{color:var(--color-primary-dark)}button{cursor:pointer;font-family:inherit}input,textarea{font-family:inherit}