:root{
  --bg:#f6f8fb;
  --surface:#ffffff;
  --surface2:#eef3f8;
  --text:#172033;
  --muted:#607086;
  --navy:#14324d;
  --blue:#2563eb;
  --blue2:#3b82f6;
  --sky:#eaf2ff;
  --line:#d8e1eb;
  --green:#0f9f6e;
  --amber:#c88700;
  --shadow:0 12px 32px rgba(19,47,76,.08);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Hiragino Sans","Yu Gothic UI","Yu Gothic",sans-serif;
  color:var(--text);
  background:var(--bg);
  min-height:100vh;
}
a{color:inherit;text-decoration:none}
.container{max-width:1120px;margin:0 auto;padding:0 20px}
header{
  position:sticky;top:0;z-index:20;
  background:rgba(255,255,255,.92);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line)
}
.nav{display:flex;justify-content:space-between;align-items:center;min-height:68px;gap:24px}
.logo{font-weight:900;color:var(--navy);font-size:18px}
.navlinks{display:flex;gap:24px;color:var(--muted);font-size:14px;font-weight:700}
.navlinks a:hover{color:var(--blue)}
.hero{padding:82px 0 72px;background:linear-gradient(180deg,#fff 0%,#f6f8fb 100%)}
.hero-grid{display:grid;grid-template-columns:1.08fr .92fr;gap:48px;align-items:center}
@media(max-width:820px){
  .hero-grid{grid-template-columns:1fr}
  .hero{padding:52px 0 44px}
  .navlinks{display:none}
}
.kicker{
  display:inline-block;
  color:var(--blue);
  background:var(--sky);
  border:1px solid #cfe0ff;
  padding:7px 11px;
  border-radius:999px;
  font-weight:900;
  font-size:12px;
  margin-bottom:18px;
}
h1{font-size:clamp(40px,6vw,66px);line-height:1.1;margin:0 0 20px;letter-spacing:-.035em;color:var(--navy)}
.lead{font-size:18px;line-height:1.85;color:var(--muted);max-width:680px;margin:0}
.actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.btn{padding:14px 20px;border-radius:12px;font-weight:900;display:inline-block}
.primary{background:var(--blue);color:white;box-shadow:0 8px 18px rgba(37,99,235,.18)}
.primary:hover{background:#1d4ed8}
.secondary{border:1px solid var(--line);background:white;color:var(--navy)}
.secondary:hover{border-color:#b9c8d8}
.mock{
  background:#0b1726;
  color:#eef6ff;
  border:1px solid #20344c;
  border-radius:24px;
  padding:22px;
  box-shadow:0 24px 48px rgba(11,23,38,.18)
}
.mock-top{display:flex;justify-content:space-between;color:#9fb4cc;font-size:12px;margin-bottom:20px}
.mock-q{text-align:center;font-size:56px;font-weight:950;margin:28px 0 14px}
.mock-label{text-align:center;color:#85c1ff;font-weight:900}
.mock-answer{margin:18px auto 8px;max-width:290px;padding:14px;background:#102338;border:1px solid #31506f;border-radius:12px;text-align:center;color:#91a8bf}
.section{padding:72px 0}
.section.white{background:#fff}
.section h2{font-size:clamp(30px,4vw,44px);margin:0 0 14px;color:var(--navy);letter-spacing:-.02em}
.section-intro{color:var(--muted);line-height:1.85;max-width:720px;margin:0}
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:30px}
@media(max-width:820px){.cards{grid-template-columns:1fr}}
.card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:18px;
  padding:22px;
  box-shadow:var(--shadow);
}
.card:hover{transform:translateY(-2px);transition:.15s transform}
.card h3{margin:0 0 10px;color:var(--navy)}
.card p{color:var(--muted);line-height:1.8;margin:0}
.tag{
  display:inline-block;
  padding:6px 9px;
  border-radius:999px;
  background:var(--sky);
  border:1px solid #cfe0ff;
  color:var(--blue);
  font-size:11px;
  font-weight:900;
  margin-bottom:12px
}
.tool-card{display:grid;grid-template-columns:1.12fr .88fr;gap:32px;align-items:center}
@media(max-width:820px){.tool-card{grid-template-columns:1fr}}
.list{display:grid;gap:10px;margin-top:18px}
.list div{padding:12px 14px;border:1px solid var(--line);background:#fff;border-radius:12px;color:var(--navy);font-weight:700}
.article{max-width:800px}
.article h2{margin-top:42px;font-size:30px;color:var(--navy)}
.article h3{margin-top:28px;color:var(--navy)}
.article p,.article li{line-height:1.9;color:#4f6177}
.callout{padding:18px 20px;border-radius:16px;background:#eef5ff;border:1px solid #cddfff;margin:24px 0;color:var(--navy)}
.featurebar{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-top:26px}
@media(max-width:820px){.featurebar{grid-template-columns:repeat(2,1fr)}}
.feature{
  background:white;border:1px solid var(--line);border-radius:14px;padding:16px;text-align:center;box-shadow:var(--shadow)
}
.feature strong{display:block;color:var(--navy);margin-bottom:4px}
.feature span{font-size:12px;color:var(--muted)}
footer{border-top:1px solid var(--line);background:#fff;padding:28px 0 44px;color:#7b8ba0;font-size:13px}
.small{font-size:12px;color:var(--muted)}