*{box-sizing:border-box}html{-webkit-text-size-adjust:100%}body{margin:0;font:17px/1.6 system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;color:#0f172a;background:#f8fafc}
.wrap{max-width:820px;margin:0 auto;padding:0 18px}a{color:#0369a1}
.top{background:#0f172a;color:#fff}.top .wrap{display:flex;gap:18px;align-items:center;min-height:54px;overflow-x:auto;white-space:nowrap;scrollbar-width:none}.top .wrap::-webkit-scrollbar{display:none}
.logo{color:#fff;font-weight:800;text-decoration:none;font-size:19px}.top nav a{color:#cbd5e1;text-decoration:none;font-size:15px;margin-right:14px}
.crumbs{font-size:14px;color:#64748b;margin:14px 0 4px}h1{font-size:30px;line-height:1.2;margin:6px 0 10px}h2{font-size:23px;margin:34px 0 10px}h3{font-size:19px}
.answer{font-size:19px;background:#ecfeff;border-left:4px solid #06b6d4;padding:12px 14px;border-radius:8px}
.tool{background:#fff;border:1px solid #e2e8f0;border-radius:14px;padding:16px;margin:18px 0;box-shadow:0 2px 10px #0f172a0d}
.tool label{font-weight:600;display:block;margin-bottom:8px}.tool .row{display:flex;gap:8px}
.tool input{flex:1;min-width:0;font-size:17px;padding:13px 12px;border:2px solid #cbd5e1;border-radius:10px}.tool input:focus{outline:none;border-color:#06b6d4}
.tool button{font-size:17px;font-weight:700;padding:0 20px;border:0;border-radius:10px;background:#0891b2;color:#fff;cursor:pointer}
.hint{font-size:14px;color:#475569;margin:8px 0 0}.hint.err{color:#b91c1c}.hint.ok{color:#047857}
.ai{background:#fff;border:1px solid #e2e8f0;border-radius:12px;padding:4px 16px 8px}
.tbl{overflow-x:auto}table{border-collapse:collapse;width:100%;font-size:15px;background:#fff}th,td{border:1px solid #e2e8f0;padding:8px;text-align:left;vertical-align:top}th{background:#f1f5f9}
.product{background:#0f172a;color:#e2e8f0;border-radius:14px;padding:6px 18px 18px;margin-top:34px}.product h2,.product h3{color:#fff}.product .cols{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.cta,.sticky{display:inline-block;background:#06b6d4;color:#0f172a;font-weight:800;text-decoration:none;padding:12px 18px;border-radius:10px}
.faq details{background:#fff;border:1px solid #e2e8f0;border-radius:10px;padding:10px 14px;margin:8px 0}.faq summary{font-weight:600;cursor:pointer}
.rel ul{columns:2}.meta{color:#64748b;font-size:14px}.foot{font-size:14px;color:#64748b;padding-bottom:90px}
.sticky{position:fixed;left:12px;right:12px;bottom:12px;text-align:center;display:none;box-shadow:0 4px 18px #0004}
@media(max-width:640px){h1{font-size:25px}.product .cols{grid-template-columns:1fr}.rel ul{columns:1}.sticky{display:block}.tool .row{flex-direction:column}.tool button{padding:13px}}

.cta-box{background:#fff;border:1px solid #e2e8f0;border-radius:14px;padding:16px;margin:18px 0;box-shadow:0 2px 10px #0f172a0d}.cta-box p{margin:0 0 10px}.lang{margin-left:auto;font-size:14px}.lang a{color:#cbd5e1;margin-left:8px}.note{font-size:14px;color:#64748b}