:root{--bg-color:#f5f5f7;--card-bg:#ffffff;--text-color:#1d1d1f;--text-muted:#86868b;--primary-color:#0071e3;--primary-hover:#0077ed;--border-color:#e5e5ea;--shadow:0 4px 20px rgba(0,0,0,0.05);--radius:16px}[data-theme="dark"]{--bg-color:#000000;--card-bg:#1c1c1e;--text-color:#f5f5f7;--text-muted:#86868b;--primary-color:#2997ff;--primary-hover:#0077ed;--border-color:#38383a;--shadow:0 4px 20px rgba(0,0,0,0.3)}*{box-sizing:border-box;margin:0;padding:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;transition:background-color 0.3s,color 0.3s}body{background-color:var(--bg-color);color:var(--text-color);min-height:100vh;display:flex;flex-direction:column;overflow-x:hidden}.container{max-width:1100px;margin:0 auto;padding:0 20px}.navbar{padding:20px 0;border-bottom:1px solid var(--border-color);background:var(--card-bg)}.nav-container{display:flex;justify-content:space-between;align-items:center}.logo{font-size:1.4rem;font-weight:700;color:var(--text-color);text-decoration:none}.logo span{color:var(--primary-color)}.nav-actions{display:flex;gap:12px;align-items:center}.select-dropdown,.icon-btn{padding:8px 12px;border-radius:8px;border:1px solid var(--border-color);background:var(--card-bg);color:var(--text-color);cursor:pointer}.hero{text-align:center;padding:60px 0 40px}.hero h1{font-size:2.2rem;margin-bottom:12px}.hero p{color:var(--text-muted);font-size:1.1rem;margin-bottom:30px}.search-box{position:relative;max-width:550px;margin:0 auto}.search-box input{width:100%;padding:16px 20px 16px 48px;font-size:1rem;border-radius:30px;border:1px solid var(--border-color);background:var(--card-bg);color:var(--text-color);outline:none;box-shadow:var(--shadow)}.search-icon{position:absolute;left:18px;top:50%;transform:translateY(-50%);color:var(--text-muted)}.main-content{flex:1;padding-bottom:60px}.categories-bar{display:flex;gap:10px;overflow-x:auto;padding:20px 0;margin-bottom:20px}.category-btn{padding:8px 16px;border-radius:20px;border:1px solid var(--border-color);background:var(--card-bg);color:var(--text-color);cursor:pointer;white-space:nowrap}.category-btn.active{background:var(--primary-color);color:#fff;border-color:var(--primary-color)}.tools-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:20px}.tool-card{background:var(--card-bg);border:1px solid var(--border-color);border-radius:var(--radius);padding:24px;text-decoration:none;color:var(--text-color);box-shadow:var(--shadow);display:flex;flex-direction:column;gap:12px}.tool-card:hover{transform:translateY(-4px)}.tool-icon{font-size:1.8rem;color:var(--primary-color)}.footer{padding:30px 0;text-align:center;border-top:1px solid var(--border-color);color:var(--text-muted);font-size:0.9rem}@media (max-width:720px),(pointer:coarse) and (max-width:1100px){.container{width:100%;max-width:none;padding-left:16px;padding-right:16px}.navbar{padding:14px 0}.logo{font-size:1.25rem;white-space:nowrap}.nav-actions{gap:8px}.select-dropdown,.icon-btn{min-height:40px;padding:8px 10px}.hero{padding:38px 0 24px}.hero h1{font-size:clamp(1.8rem,8vw,2.25rem);line-height:1.18;margin-bottom:14px}.hero p{font-size:1rem;line-height:1.5;margin-bottom:24px}.search-box{max-width:none}.search-box input{min-height:54px;font-size:0.95rem}.main-content{padding-bottom:36px}.categories-bar{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:9px;overflow:visible;padding:12px 0 22px;margin-bottom:0}.category-btn{width:100%;min-width:0;padding:10px 8px;font-size:0.86rem;overflow:hidden;text-overflow:ellipsis}.tools-grid{grid-template-columns:minmax(0,1fr);gap:14px}.tool-card{min-width:0;padding:20px;gap:9px}.tool-card h3{font-size:1.1rem}.footer{padding:24px 0}}@media (max-width:380px){.container{padding-left:12px;padding-right:12px}.logo{font-size:1.1rem}.nav-actions{gap:5px}.select-dropdown,.icon-btn{padding:7px 8px}.category-btn{font-size:0.78rem}}