:root{
  --bg:#f7f8fb;--surface:#fff;--surface-2:#f0f3f8;--text:#172033;--muted:#667085;
  --border:#e4e7ec;--brand:#5b5bd6;--brand-2:#3535a8;--accent:#12b76a;--danger:#d92d20;
  --shadow:0 10px 30px rgba(16,24,40,.08);--radius:18px;--max:1180px;
}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--text);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;line-height:1.6}
a{color:inherit;text-decoration:none}button,input,select,textarea{font:inherit}.container{width:min(var(--max),calc(100% - 32px));margin:auto}
.skip-link{position:absolute;left:-9999px}.skip-link:focus{left:16px;top:16px;background:#fff;padding:10px 14px;border-radius:10px;z-index:1000}
.site-header{position:sticky;top:0;z-index:50;background:rgba(247,248,251,.92);backdrop-filter:blur(12px);border-bottom:1px solid rgba(228,231,236,.9)}
.nav{display:flex;align-items:center;justify-content:space-between;min-height:68px;gap:20px}.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:1.25rem;letter-spacing:-.03em}.brand-mark{display:grid;place-items:center;width:34px;height:34px;border-radius:11px;background:linear-gradient(145deg,var(--brand),#8b5cf6);color:#fff;font-weight:900;box-shadow:0 8px 18px rgba(91,91,214,.25)}
.nav-links{display:flex;align-items:center;gap:22px;color:var(--muted);font-size:.95rem}.nav-links a:hover{color:var(--text)}.nav-toggle{display:none;border:0;background:none;font-size:1.35rem}
.hero{padding:74px 0 54px}.eyebrow{display:inline-flex;gap:8px;align-items:center;background:#ececff;color:var(--brand-2);padding:7px 12px;border-radius:999px;font-size:.84rem;font-weight:700}.hero h1{font-size:clamp(2.4rem,6vw,4.9rem);line-height:1.02;letter-spacing:-.055em;margin:18px 0 18px;max-width:900px}.hero p{font-size:1.16rem;color:var(--muted);max-width:720px;margin:0 0 28px}.hero-actions{display:flex;gap:12px;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:12px;padding:12px 18px;border:1px solid var(--border);background:#fff;font-weight:700;cursor:pointer}.btn.primary{background:var(--brand);border-color:var(--brand);color:#fff}.btn:hover{transform:translateY(-1px)}
.search-wrap{margin-top:28px;max-width:760px;background:#fff;border:1px solid var(--border);border-radius:16px;padding:8px;display:flex;box-shadow:var(--shadow)}.search-wrap input{flex:1;border:0;outline:0;padding:11px 14px;background:transparent;min-width:0}.search-wrap button{border:0;border-radius:10px;background:var(--text);color:#fff;padding:10px 16px;font-weight:700;cursor:pointer}
.section{padding:36px 0 62px}.section-head{display:flex;justify-content:space-between;align-items:end;gap:18px;margin-bottom:22px}.section h2{font-size:clamp(1.7rem,3vw,2.35rem);letter-spacing:-.035em;margin:0}.section-copy{color:var(--muted);max-width:660px;margin:6px 0 0}.chips{display:flex;gap:8px;flex-wrap:wrap;margin:20px 0 28px}.chip{border:1px solid var(--border);background:#fff;padding:8px 12px;border-radius:999px;cursor:pointer;color:var(--muted)}.chip.active,.chip:hover{background:#ececff;border-color:#d7d7ff;color:var(--brand-2)}
.tools-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.tool-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:20px;box-shadow:0 2px 10px rgba(16,24,40,.03);transition:.18s ease}.tool-card:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:#d5d9e2}.tool-icon{width:42px;height:42px;border-radius:12px;background:var(--surface-2);display:grid;place-items:center;font-weight:800;color:var(--brand-2);margin-bottom:14px}.tool-card h3{margin:0 0 7px;font-size:1.08rem}.tool-card p{color:var(--muted);font-size:.93rem;margin:0}.tag{display:inline-block;margin-top:13px;font-size:.75rem;color:#475467;background:#f2f4f7;padding:4px 8px;border-radius:999px}
.category-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}.category-card{background:#fff;border:1px solid var(--border);border-radius:16px;padding:18px}.category-card strong{display:block;margin-bottom:5px}.category-card span{color:var(--muted);font-size:.9rem}
.value-strip{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:24px}.value{background:#fff;border:1px solid var(--border);padding:20px;border-radius:16px}.value b{display:block;margin-bottom:5px}.value span{color:var(--muted);font-size:.92rem}
.page-hero{padding:54px 0 28px}.breadcrumbs{font-size:.88rem;color:var(--muted);margin-bottom:14px}.page-hero h1{font-size:clamp(2.1rem,5vw,3.4rem);letter-spacing:-.045em;margin:0 0 12px;line-height:1.08}.page-hero p{color:var(--muted);font-size:1.05rem;max-width:760px}
.tool-shell{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:24px;align-items:start;padding-bottom:50px}.tool-panel{background:#fff;border:1px solid var(--border);border-radius:20px;padding:24px;box-shadow:var(--shadow)}.tool-panel h2{margin-top:0}.form-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.field{display:flex;flex-direction:column;gap:7px}.field.full{grid-column:1/-1}.field label{font-weight:700;font-size:.92rem}.field input,.field select,.field textarea{width:100%;border:1px solid #d0d5dd;border-radius:11px;padding:11px 12px;background:#fff;outline:none}.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--brand);box-shadow:0 0 0 3px rgba(91,91,214,.12)}.field textarea{min-height:180px;resize:vertical}.actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:16px}.result{margin-top:18px;padding:18px;border-radius:14px;background:#f8f9ff;border:1px solid #e0e1ff;min-height:54px}.result strong{font-size:1.15rem}.result-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-top:10px}.metric{background:#fff;border:1px solid var(--border);padding:12px;border-radius:12px}.metric span{display:block;color:var(--muted);font-size:.8rem}.metric b{font-size:1.08rem}.error{color:var(--danger)}.success{color:#067647}.mono{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;word-break:break-all}
.side-card{background:#fff;border:1px solid var(--border);border-radius:16px;padding:18px;margin-bottom:14px}.side-card h3{margin:0 0 8px;font-size:1rem}.side-card p,.side-card li{color:var(--muted);font-size:.9rem}.side-card ul{padding-left:18px;margin-bottom:0}
.content-block{background:#fff;border:1px solid var(--border);border-radius:18px;padding:24px;margin-bottom:18px}.content-block h2,.content-block h3{margin-top:0}.content-block p,.content-block li{color:#475467}.faq details{border-top:1px solid var(--border);padding:14px 0}.faq details:first-of-type{border-top:0}.faq summary{cursor:pointer;font-weight:700}.faq p{margin-bottom:0}
.site-footer{border-top:1px solid var(--border);padding:34px 0 20px;margin-top:30px;background:#fff}.footer-grid{display:grid;grid-template-columns:1.4fr repeat(3,1fr);gap:24px}.footer-col h4{margin:0 0 9px}.footer-col a{display:block;color:var(--muted);font-size:.9rem;margin:6px 0}.footer-bottom{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;border-top:1px solid var(--border);margin-top:28px;padding-top:18px;color:var(--muted);font-size:.85rem}
.notice{background:#fff7e8;border:1px solid #fedf89;color:#7a2e0e;padding:12px 14px;border-radius:12px;font-size:.9rem}.hidden{display:none!important}
@media(max-width:900px){.tools-grid{grid-template-columns:repeat(2,1fr)}.category-grid{grid-template-columns:repeat(2,1fr)}.value-strip{grid-template-columns:1fr}.tool-shell{grid-template-columns:1fr}.footer-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:640px){.nav-toggle{display:block}.nav-links{display:none;position:absolute;top:68px;left:16px;right:16px;background:#fff;border:1px solid var(--border);border-radius:14px;padding:14px;box-shadow:var(--shadow);flex-direction:column;align-items:flex-start}.nav-links.open{display:flex}.hero{padding-top:48px}.tools-grid,.category-grid,.form-grid,.result-grid,.footer-grid{grid-template-columns:1fr}.section-head{align-items:start;flex-direction:column}.search-wrap{display:block}.search-wrap button{width:100%}}