:root{--bg:#f7f9fc;--card:#fff;--text:#0f172a;--muted:#64748b;--primary:#2563eb;--primary-dark:#1d4ed8;--border:#e2e8f0;--soft:#eff6ff}
*{box-sizing:border-box} body{margin:0;font-family:Arial,Helvetica,sans-serif;background:var(--bg);color:var(--text);line-height:1.6}
a{color:var(--primary);text-decoration:none} a:hover{text-decoration:underline}
.container{max-width:1120px;margin:0 auto;padding:0 20px}
.header{background:rgba(255,255,255,.94);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:10}
.nav{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:16px 0}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;color:var(--text);font-size:20px}
.logo-mark{width:40px;height:40px;border-radius:12px;display:flex;align-items:center;justify-content:center;background:var(--primary);color:#fff;font-weight:900}
.nav-links{display:flex;gap:16px;align-items:center;flex-wrap:wrap}.nav-links a{color:var(--text);font-weight:700;font-size:14px}
.btn{display:inline-flex;align-items:center;justify-content:center;border:0;border-radius:12px;padding:12px 18px;background:var(--primary);color:#fff!important;font-weight:700;cursor:pointer;text-decoration:none}
.btn:hover{background:var(--primary-dark);text-decoration:none}.btn.secondary{background:#e0ecff;color:var(--primary-dark)!important}
.hero{padding:70px 0 40px}.hero-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:30px;align-items:center}
.badge{display:inline-flex;background:var(--soft);color:var(--primary-dark);border:1px solid #bfdbfe;border-radius:999px;padding:8px 12px;font-weight:800;font-size:14px}
h1{font-size:52px;line-height:1.08;margin:18px 0 16px;letter-spacing:-1.5px}h2{font-size:34px;line-height:1.2;margin:0 0 16px}h3{font-size:22px;margin:0 0 10px}
p.lead{font-size:20px;color:var(--muted);margin:0 0 24px}
.hero-card,.card,.content,.form-card,.result-card{background:var(--card);border:1px solid var(--border);border-radius:22px;box-shadow:0 8px 30px rgba(15,23,42,.05)}
.hero-card{padding:28px}.hero-card .big{font-size:46px;font-weight:900;color:var(--primary);line-height:1}
.section{padding:46px 0}.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.card{padding:22px}.card .icon{font-size:30px;margin-bottom:12px}.card p{color:var(--muted)}
.tool-wrap{display:grid;grid-template-columns:1fr .9fr;gap:22px;align-items:start}.form-card,.result-card,.content{padding:24px}
.question{margin:0 0 18px}.question label{display:block;font-weight:800;margin-bottom:8px}
select,input[type=number]{width:100%;padding:12px 13px;border:1px solid var(--border);border-radius:12px;background:#fff;font-size:16px;color:var(--text)}
.result-box{border-radius:18px;padding:20px;background:var(--soft);border:1px solid #bfdbfe;min-height:160px}.score{font-size:48px;font-weight:900;color:var(--primary);line-height:1;margin-bottom:8px}.result-title{font-size:24px;font-weight:900;margin:0 0 8px}.result-desc{color:var(--muted);margin:0}
.page-hero{padding:46px 0 20px}.page-hero h1{font-size:44px}.note{padding:14px 16px;border-radius:14px;background:#fffbeb;border:1px solid #fde68a;color:#92400e}
.faq details{background:var(--card);border:1px solid var(--border);border-radius:16px;padding:16px 18px;margin-bottom:12px}.faq summary{font-weight:800;cursor:pointer}
.footer{margin-top:50px;background:#0f172a;color:#cbd5e1;padding:36px 0}.footer-grid{display:grid;grid-template-columns:1.2fr .8fr .8fr;gap:24px}.footer a{color:#e2e8f0}.footer p{color:#94a3b8}.small{font-size:14px;color:var(--muted)}
@media(max-width:850px){.hero-grid,.tool-wrap,.footer-grid,.grid{grid-template-columns:1fr}h1{font-size:38px}.page-hero h1{font-size:34px}.nav{align-items:flex-start;flex-direction:column}}