:root{
  --bg:#f7f9fc;--surface:#fff;--surface-2:#eef4ff;--text:#162033;--muted:#5e6b7d;
  --line:#dce3ed;--brand:#155eef;--brand-dark:#0b4bc4;--success:#087443;--shadow:0 12px 34px rgba(16,35,68,.08);
  --radius:16px;--max:1120px
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--text);font:16px/1.65 system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}
a{color:var(--brand);text-decoration:none}
a:hover{text-decoration:underline}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:3px solid rgba(21,94,239,.3);outline-offset:2px}
img{max-width:100%;height:auto}
.container{width:min(calc(100% - 32px),var(--max));margin:auto}
.site-header{background:rgba(255,255,255,.96);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20;backdrop-filter:blur(10px)}
.nav{min-height:68px;display:flex;align-items:center;justify-content:space-between;gap:20px}
.brand{display:inline-flex;align-items:center;gap:8px;color:var(--text);font-weight:800;letter-spacing:-.02em}
.brand:hover{text-decoration:none}
.brand-mark{display:grid;place-items:center;width:32px;height:32px;border-radius:9px;background:var(--brand);color:#fff}
.nav nav{display:flex;gap:20px;align-items:center}
.nav nav a{color:var(--text);font-weight:650}
.hero{padding:72px 0 48px;background:linear-gradient(180deg,#fff 0%,#f5f8ff 100%)}
.hero-grid{display:grid;grid-template-columns:1.35fr .9fr;gap:48px;align-items:center}
.eyebrow{font-size:.76rem;font-weight:800;letter-spacing:.12em;color:var(--brand);margin-bottom:8px}
h1,h2,h3{line-height:1.18;letter-spacing:-.025em}
h1{font-size:clamp(2.35rem,6vw,4.4rem);margin:0 0 18px}
h2{font-size:clamp(1.7rem,3vw,2.35rem);margin:0 0 12px}
h3{font-size:1.12rem;margin:8px 0}
.hero-copy{font-size:1.1rem;color:var(--muted);max-width:680px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin:24px 0}
.btn{display:inline-flex;align-items:center;justify-content:center;border:1px solid var(--line);border-radius:11px;padding:11px 17px;font-weight:750;cursor:pointer}
.btn:hover{text-decoration:none}
.btn.primary{background:var(--brand);border-color:var(--brand);color:#fff}
.btn.primary:hover{background:var(--brand-dark)}
.btn.secondary{background:#fff;color:var(--text)}
.trust-row{display:flex;flex-wrap:wrap;gap:16px;color:var(--muted);font-size:.92rem}
.search-card,.tool-panel,.article,.content-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}
.search-card{padding:22px}
.search-card label{font-weight:750;display:block;margin-bottom:9px}
.search-box{display:flex;gap:8px}
.search-box input{min-width:0;flex:1}
input,select,textarea{width:100%;border:1px solid #c8d2e0;border-radius:10px;background:#fff;padding:11px 12px;color:var(--text);font:inherit}
button{font:inherit}
.search-box button{border:0;border-radius:10px;background:var(--brand);color:#fff;padding:0 16px;font-weight:750;cursor:pointer}
.search-results{margin-top:10px}
.search-results a{display:block;padding:9px 0;border-bottom:1px solid var(--line)}
.ad-slot{min-height:92px;margin:24px 0;display:grid;place-items:center;border:1px dashed #c9d2df;border-radius:12px;color:#7a8797;font-size:.78rem;text-transform:uppercase;letter-spacing:.08em;background:#fbfcfe}
.section{padding:58px 0}
.section.alt{background:#eef4ff}
.section-head{display:flex;align-items:end;justify-content:space-between;gap:20px;margin-bottom:22px}
.tool-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.tool-card,.article-card{display:block;background:#fff;border:1px solid var(--line);border-radius:14px;padding:20px;transition:transform .16s ease,box-shadow .16s ease}
.tool-card:hover,.article-card:hover{transform:translateY(-2px);box-shadow:var(--shadow);text-decoration:none}
.tool-card p,.article-card p{color:var(--muted);margin:7px 0 0}
.icon{font-size:1.35rem;color:var(--brand);font-weight:900}
.split{display:grid;grid-template-columns:1fr 1fr;gap:42px;align-items:start}
.feature-list{display:grid;gap:12px}
.feature-list>div{display:flex;gap:15px;background:#fff;border:1px solid var(--line);border-radius:12px;padding:16px}
.feature-list b{color:var(--brand)}
.article-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.article-card span{font-size:.72rem;letter-spacing:.1em;font-weight:800;color:var(--brand)}
.footer{border-top:1px solid var(--line);background:#fff;padding:42px 0 0}
.footer-grid{display:grid;grid-template-columns:2fr 1fr;gap:30px;padding-bottom:30px}
.footer-grid>div:last-child{display:grid;align-content:start;gap:7px}
.copyright{border-top:1px solid var(--line);padding:16px 0;color:var(--muted);font-size:.9rem}
.page-hero{padding:54px 0 26px;background:#fff;border-bottom:1px solid var(--line)}
.page-hero p{max-width:760px;color:var(--muted)}
.tool-layout{max-width:850px;margin:42px auto}
.tool-panel{padding:24px}
.tool-panel form{display:grid;gap:15px}
.field{display:grid;gap:6px}
.field label{font-weight:700}
.result{margin-top:20px;padding:18px;border-radius:12px;background:var(--surface-2);border:1px solid #cfe0ff}
.result strong{font-size:1.25rem}
.notice{padding:14px 16px;border-radius:11px;background:#fff8e6;border:1px solid #f0d58b;color:#6c4c00}
.article{padding:32px;max-width:820px;margin:42px auto}
.article h2{margin-top:32px}
.article li{margin:7px 0}
.breadcrumb{font-size:.9rem;color:var(--muted);padding-top:20px}
.table-wrap{overflow:auto}
table{width:100%;border-collapse:collapse;background:#fff}
th,td{border:1px solid var(--line);padding:10px;text-align:left}
.small{font-size:.9rem;color:var(--muted)}
.center{text-align:center}
@media(max-width:820px){
  .hero-grid,.split{grid-template-columns:1fr}
  .tool-grid,.article-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr}
}
@media(max-width:560px){
  .container{width:min(calc(100% - 22px),var(--max))}
  .nav{align-items:flex-start;padding:12px 0}
  .nav nav{gap:12px;font-size:.92rem}
  .hero{padding-top:44px}
  .tool-grid,.article-grid{grid-template-columns:1fr}
  .section{padding:42px 0}
  .search-box{flex-direction:column}
  .search-box button{padding:11px}
}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.tool-card,.article-card{transition:none}}