:root{--bg-page: #f0f5ff;--bg-main: #f7fbff;--bg-card: #ffffff;--bg-input: #e8f0fe;--border: #b8c9e3;--border-light: #d0dde8;--text-primary: #0f172a;--text-secondary: #334155;--text-muted: #64748b;--accent: #2563eb;--accent-hover: #1d4ed8;--primary: #0f172a;--danger: #c0392b;--success: #16a34a;--warning: #d97706;--info: #2563eb;--r-sm: 6px;--r-md: 10px;--r-lg: 14px;--r-xl: 20px;--fs-xs: 12px;--fs-sm: 13px;--fs-base: 15px;--fs-md: 17px;--fs-lg: 20px;--fs-xl: 26px;--fs-2xl: 34px;--fs-3xl: 42px;--shadow-sm: 0 1px 3px rgba(15,23,42,.06);--shadow-md: 0 4px 14px rgba(15,23,42,.1);--shadow-lg: 0 10px 30px rgba(15,23,42,.12)}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Microsoft YaHei,sans-serif;background:var(--bg-page);color:var(--text-primary);-webkit-font-smoothing:antialiased;font-size:var(--fs-base);line-height:1.65}.app{min-height:100vh;display:flex;flex-direction:column}.main{flex:1}.header{position:sticky;top:0;z-index:100;background:#f7fbffe0;-webkit-backdrop-filter:blur(12px) saturate(180%);backdrop-filter:blur(12px) saturate(180%);border-bottom:2px solid var(--border);display:flex;align-items:center;justify-content:space-between;padding:0 28px;height:60px}.brand{display:flex;align-items:center;gap:10px;text-decoration:none;-webkit-user-select:none;user-select:none;flex-shrink:0}.brand-logo-img{width:34px;height:34px;border-radius:8px;object-fit:cover;flex-shrink:0;transition:transform .25s ease}.brand:hover .brand-logo-img{transform:rotate(-8deg) scale(1.06)}.brand-name{font-size:21px;font-weight:750;color:var(--text-primary);letter-spacing:-.02em}.brand:hover .brand-name{color:#16a34a;transition:color .2s}.nav{display:flex;gap:2px}.nav-link{display:flex;align-items:center;gap:5px;padding:8px 15px;border-radius:var(--r-sm);color:var(--text-secondary);text-decoration:none;font-size:var(--fs-base);font-weight:500;transition:all .15s ease}.nav-link:hover{background:var(--bg-input);color:var(--text-primary)}.nav-link.active{color:#16a34a;background:#2563eb17;font-weight:650}.nav-icon{opacity:.55;flex-shrink:0}.nav-link:hover .nav-icon,.nav-link.active .nav-icon{opacity:1}.header-right{display:flex;align-items:center;gap:12px}.user-btn{display:flex;align-items:center;gap:8px;padding:5px 10px 5px 5px;border-radius:var(--r-md);border:1.5px solid var(--border);background:none;cursor:pointer;color:var(--text-secondary);font-size:var(--fs-sm);font-weight:500;transition:all .15s}.user-btn:hover{border-color:var(--text-muted);color:var(--text-primary)}.user-avatar{width:28px;height:28px;border-radius:var(--r-sm);background:linear-gradient(135deg,var(--accent),#1d4ed8);color:#fff;font-size:13px;font-weight:700;display:flex;align-items:center;justify-content:center}.user-name{max-width:90px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.auth-link{padding:8px 18px;border-radius:var(--r-sm);border:1.5px solid var(--border);background:none;color:var(--text-secondary);font-size:var(--fs-base);cursor:pointer;font-weight:500;transition:all .15s}.auth-link:hover{background:var(--bg-card);color:var(--text-primary);border-color:var(--text-muted)}.auth-btn-primary{padding:8px 20px;border-radius:var(--r-sm);border:none;background:linear-gradient(135deg,#2563eb,#1d4ed8);color:#fff;font-size:var(--fs-base);cursor:pointer;font-weight:600;transition:all .15s;box-shadow:0 2px 8px #2563eb40}.auth-btn-primary:hover{background:linear-gradient(135deg,#3b82f6,#2563eb);box-shadow:0 4px 14px #2563eb59;transform:translateY(-1px)}.footer{border-top:2px solid var(--border);background:var(--bg-main);padding:22px 28px;text-align:center}.footer-inner p{color:var(--text-muted);font-size:var(--fs-sm)}.el-card{border:1.5px solid var(--border)!important;border-radius:var(--r-lg)!important;box-shadow:var(--shadow-sm)!important;transition:box-shadow .2s,transform .2s!important;background:var(--bg-card)!important}.el-card:hover{box-shadow:var(--shadow-md)!important}.el-card__header{border-bottom:1.5px solid var(--border-light)!important;background:transparent!important;padding:14px 18px!important;font-weight:650;font-size:var(--fs-base);color:var(--text-primary)}.el-input__wrapper,.el-textarea__inner{background:var(--bg-input)!important;border-radius:var(--r-sm)!important;box-shadow:none!important;border:1.5px solid var(--border)!important;font-size:var(--fs-base)!important;transition:border-color .2s,box-shadow .2s!important}.el-input__wrapper:focus-within,.el-textarea__inner:focus{border-color:#16a34a!important;box-shadow:0 0 0 3px #2563eb24 ! important!important}.el-button--primary{background:linear-gradient(135deg,#2563eb,#1d4ed8)!important;border-color:#16a34a!important;font-weight:600;font-size:var(--fs-base)!important;box-shadow:0 2px 6px #2563eb33!important}.el-button--primary:hover{background:linear-gradient(135deg,#3b82f6,#2563eb)!important;border-color:#16a34a!important}.el-button--default{border-color:var(--border)!important;color:var(--text-secondary)!important;font-size:var(--fs-base)!important;background:var(--bg-main)!important}.el-button--default:hover{border-color:var(--text-muted)!important;color:var(--text-primary)!important;background:var(--bg-card)!important}.tool-desc{background:var(--bg-input);border-left:3.5px solid var(--accent);padding:14px 18px;border-radius:0 var(--r-sm) var(--r-sm) 0;margin:18px 0;color:var(--text-secondary);font-size:var(--fs-base);line-height:1.7}.el-dropdown-menu__item{font-size:var(--fs-sm)}@media (max-width: 768px){.header{padding:0 16px;height:56px}.nav,.user-name{display:none}.brand-name{font-size:19px}.footer{padding:18px 16px}}@media (min-width: 769px) and (max-width: 1024px){.nav-link{padding:8px 11px;font-size:var(--fs-sm)}.nav-icon{display:none}}