*{box-sizing:border-box;margin:0;padding:0}
body{font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Arial,sans-serif;background:#f6f7f9;color:#1e293b;line-height:1.6}
a{color:#4f46e5;text-decoration:none}
a:hover{text-decoration:underline}
header{background:#fff;border-bottom:1px solid #e5e7eb;position:sticky;top:0;z-index:10;box-shadow:0 1px 4px rgba(15,23,42,.05)}
.wrap{max-width:1080px;margin:0 auto;padding:0 18px}
.header-inner{display:flex;align-items:center;gap:12px;padding-top:10px;padding-bottom:10px}
.logo{display:flex;align-items:center;gap:10px;text-decoration:none;flex:0 0 auto}
.logo:hover{text-decoration:none}
.logo-tile{width:46px;height:46px;flex:0 0 46px;border-radius:12px;background:linear-gradient(135deg,#8b5cf6,#6366f1);color:#fff;font-size:28px;font-weight:800;display:flex;align-items:center;justify-content:center}
.logo-text{display:block;font-size:24px;font-weight:800;color:#0f172a;line-height:1.1}
.logo-suffix{font-size:13px;font-weight:600;color:#7c3aed;margin-left:2px}
.logo-tag{display:block;font-size:11px;font-weight:500;color:#64748b}
.header-actions{margin-left:auto;display:flex;gap:10px;flex:0 0 auto}
.icon-btn{width:44px;height:44px;border:1px solid #e2e8f0;background:#fff;border-radius:12px;cursor:pointer;display:flex;align-items:center;justify-content:center;color:#0f172a}
.icon-btn:hover{background:#f8fafc}
.icon-btn svg{width:22px;height:22px}
nav#main-nav{display:none;position:absolute;top:100%;left:0;right:0;background:#fff;border-bottom:1px solid #e5e7eb;padding:6px 18px 12px;box-shadow:0 8px 16px rgba(15,23,42,.08)}
nav#main-nav.open{display:block}
nav#main-nav a{display:block;color:#0f172a;font-size:16px;font-weight:600;padding:10px 4px;border-bottom:1px solid #f1f5f9}
nav#main-nav a:last-child{border-bottom:0}
@media(min-width:768px){
nav#main-nav{display:flex;position:static;border:0;padding:0;box-shadow:none;margin-left:auto}
nav#main-nav a{margin-left:22px;padding:0;border:0;font-size:15px;color:#334155}
.header-actions{margin-left:12px}
#menu-btn{display:none}
}
.intro{background:#fff;border-bottom:1px solid #e5e7eb;text-align:center;padding:30px 18px 26px}
.intro h1{font-size:30px;line-height:1.25;color:#0f172a;margin-bottom:8px}
.intro p.lead{font-size:16px;color:#475569;max-width:640px;margin:0 auto 18px}
.search{max-width:520px;margin:0 auto}
.search input{width:100%;padding:13px 18px;border-radius:999px;border:1px solid #e2e8f0;font-size:16px;outline:none;background:#f8fafc}
.search input:focus{border-color:#818cf8;background:#fff;box-shadow:0 0 0 3px rgba(99,102,241,.15)}
.stats-line{margin-top:14px;font-size:14px;color:#64748b}
.stats-line b{color:#4f46e5}
@media(max-width:640px){.intro h1{font-size:24px}}
section{padding:28px 0 4px}
h2.cat{font-size:20px;font-weight:800;color:#0f172a;margin-bottom:14px}
h2.cat::after{content:"";display:block;width:36px;height:3px;background:#7c3aed;border-radius:2px;margin-top:6px}
.grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
@media(min-width:768px){.grid{grid-template-columns:repeat(3,1fr);gap:16px}}
@media(min-width:1024px){.grid{grid-template-columns:repeat(4,1fr)}}
@media(max-width:400px){.grid{grid-template-columns:1fr}}
.card{background:#fff;border:1px solid #e5e7eb;border-radius:16px;padding:16px;display:flex;align-items:center;gap:14px;color:#1e293b;box-shadow:0 1px 3px rgba(15,23,42,.05);transition:box-shadow .15s,transform .15s;min-height:88px}
.card:hover{box-shadow:0 8px 24px rgba(15,23,42,.12);transform:translateY(-2px);text-decoration:none}
.card .icon{flex:0 0 56px;width:56px;height:56px;border-radius:14px;background:linear-gradient(135deg,#8b5cf6,#6366f1);display:flex;align-items:center;justify-content:center;font-size:26px;line-height:1}
.card-text{min-width:0}
.card h3{font-size:16px;line-height:1.3;margin-bottom:2px;color:#0f172a}
.card p{font-size:13px;color:#64748b;line-height:1.4;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.tool-box{background:#fff;border:1px solid #e2e8f0;border-radius:12px;padding:22px;margin:20px 0}
.field-label{display:block;font-weight:600;font-size:14px;margin:12px 0 6px}
.input{width:100%;padding:11px 12px;border:1px solid #cbd5e1;border-radius:8px;font-size:15px;font-family:inherit;background:#fff}
.input:focus{outline:2px solid #818cf8;border-color:#818cf8}
textarea.input{resize:vertical;min-height:120px}
.btn{display:inline-block;background:#4f46e5;color:#fff;border:0;border-radius:8px;padding:11px 22px;font-size:15px;font-weight:600;cursor:pointer;margin-top:14px}
.btn:hover{background:#4338ca}
.btn-secondary{background:#e2e8f0;color:#0f172a}
.btn-secondary:hover{background:#cbd5e1}
.result-box{background:#f1f5f9;border:1px solid #e2e8f0;border-radius:8px;padding:16px;margin-top:16px;word-break:break-word}
.output{font-size:17px}
.stats{display:flex;flex-wrap:wrap;gap:12px;margin-top:16px}
.stat{background:#f1f5f9;border-radius:8px;padding:12px 16px;min-width:110px;text-align:center}
.stat-num{display:block;font-size:24px;font-weight:800;color:#4f46e5}
.stat-label{font-size:13px;color:#64748b}
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:14px}
@media(max-width:640px){.grid-2{grid-template-columns:1fr}}
.check{display:block;margin:8px 0;font-size:15px}
.check input{margin-right:8px}
input[type=range].input-range{width:100%}
pre.code{background:#0f172a;color:#e2e8f0;border-radius:8px;padding:14px;overflow-x:auto;font-size:13px;margin-top:12px;white-space:pre-wrap}
.crumb{font-size:13px;color:#64748b;margin:18px 0 0}
.crumb a{color:#64748b}
.steps{margin:12px 0 12px 20px}
.steps li{margin-bottom:6px}
.rel{margin-top:26px}
footer{background:#0f172a;color:#94a3b8;text-align:center;padding:26px 18px;margin-top:44px;font-size:14px}
footer a{color:#c7d2fe}
.note{background:#fef9c3;border:1px solid #fde047;border-radius:8px;padding:12px 14px;font-size:14px;margin-top:14px}
.swatch{display:inline-block;width:64px;height:64px;border-radius:8px;margin:4px;cursor:pointer;border:1px solid #cbd5e1}