*,:after,:before{box-sizing:border-box;margin:0;padding:0}:root{--color-bg:#f5f7fa;--color-surface:#fff;--color-primary:#4f46e5;--color-primary-hover:#4338ca;--color-text:#1e293b;--color-text-secondary:#64748b;--color-border:#e2e8f0;--color-shadow:rgba(0,0,0,.06);--radius:8px;--max-width:1200px;--header-height:60px}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:var(--color-bg);color:var(--color-text);line-height:1.6;min-height:100vh;display:flex;flex-direction:column}a{color:var(--color-primary);text-decoration:none}a:hover{color:var(--color-primary-hover)}.container{max-width:var(--max-width);margin:0 auto;padding:0 20px;width:100%}.site-header{background:var(--color-surface);border-bottom:1px solid var(--color-border);height:var(--header-height);position:-webkit-sticky;position:sticky;top:0;z-index:100}.header-inner,.site-header{display:flex;align-items:center}.header-inner{justify-content:space-between}.site-logo{font-size:1.25rem;font-weight:700;color:var(--color-text);display:flex;align-items:center;gap:6px}.site-nav{display:flex;gap:16px}.site-nav a{color:var(--color-text-secondary);font-size:.9rem}.site-nav a:hover{color:var(--color-primary)}.site-main{flex:1 1;padding:32px 0}.hero{text-align:center;margin-bottom:40px}.hero h1{font-size:2rem;margin-bottom:8px}.hero-desc{color:var(--color-text-secondary);margin-bottom:24px}.search-bar{position:relative;max-width:500px;margin:0 auto}.search-input{width:100%;padding:12px 16px;border:2px solid var(--color-border);border-radius:var(--radius);font-size:1rem;outline:none;transition:border-color .2s}.search-input:focus{border-color:var(--color-primary)}.search-results{position:absolute;top:100%;left:0;right:0;background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius);margin-top:4px;box-shadow:0 8px 24px var(--color-shadow);max-height:300px;overflow-y:auto;z-index:50}.search-results ul{list-style:none}.search-results li a{display:flex;align-items:center;gap:10px;padding:10px 16px;color:var(--color-text);border-bottom:1px solid var(--color-border)}.search-results li:last-child a{border-bottom:none}.search-results li a:hover{background:var(--color-bg)}.result-icon{font-size:1.2rem}.result-name{font-weight:600}.result-desc{font-size:.85rem}.no-results,.result-desc{color:var(--color-text-secondary)}.no-results{padding:16px;text-align:center}.tool-category{margin-bottom:32px}.category-title{font-size:1.1rem;color:var(--color-text-secondary);margin-bottom:16px;padding-bottom:8px;border-bottom:1px solid var(--color-border)}.tool-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));grid-gap:16px;gap:16px}.tool-card{display:flex;align-items:flex-start;gap:12px;padding:20px;background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius);transition:box-shadow .2s,transform .2s;color:var(--color-text)}.tool-card:hover{box-shadow:0 4px 16px var(--color-shadow);transform:translateY(-2px);color:var(--color-text)}.tool-icon{font-size:2rem;flex-shrink:0}.tool-name{font-size:1rem;font-weight:600;margin-bottom:4px}.tool-desc{font-size:.85rem;color:var(--color-text-secondary);margin-bottom:8px}.tool-keywords{display:flex;flex-wrap:wrap;gap:4px}.keyword-tag{font-size:.7rem;padding:2px 8px;background:var(--color-bg);border-radius:12px;color:var(--color-text-secondary)}.tool-page{max-width:900px;margin:0 auto}.tool-header{margin-bottom:24px}.tool-header h1{display:flex;align-items:center;gap:10px;font-size:1.5rem}.tool-header p{color:var(--color-text-secondary);margin-top:4px}.error-page{text-align:center;padding:80px 0}.error-page h1{font-size:4rem;color:var(--color-primary)}.error-page p{color:var(--color-text-secondary);margin:16px 0}.btn-primary{display:inline-block;padding:10px 24px;background:var(--color-primary);color:#fff;border-radius:var(--radius);font-weight:500}.btn-primary:hover{background:var(--color-primary-hover);color:#fff}.tool-error{text-align:center;padding:60px 0}.tool-error code{background:var(--color-bg);padding:2px 8px;border-radius:4px}.empty-state{text-align:center;padding:60px 0;color:var(--color-text-secondary)}.empty-state code{background:var(--color-surface);padding:2px 8px;border-radius:4px}.hint{margin-top:8px;font-size:.9rem}.site-footer{text-align:center;padding:20px 0;color:var(--color-text-secondary);font-size:.85rem;border-top:1px solid var(--color-border)}@media (max-width:640px){.hero h1{font-size:1.5rem}.tool-grid{grid-template-columns:1fr}}