:root{--primary:#254290;--black:#111111;--dark:#1C1C1C;--mid:#2B2B2B;--light:#F5F5F5;--white:#ffffff;--text:#222;--muted:#666;--border:#e8e8e8;--shadow:0 16px 40px rgba(17,17,17,.08);--radius:18px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:Arial,Helvetica,sans-serif;color:var(--text);background:var(--light);line-height:1.7}a{color:inherit;text-decoration:none}img{max-width:100%;height:auto;display:block}.container{width:min(1120px,calc(100% - 32px));margin:0 auto}.site-header,header{position:sticky;top:0;z-index:20;background:var(--primary);box-shadow:0 10px 30px rgba(0,0,0,.14)}.header-inner{min-height:72px;display:flex;align-items:center;justify-content:space-between;gap:18px}.logo{display:flex;align-items:center;gap:12px;color:#fff;font-weight:800;letter-spacing:.4px}.logo img{width:42px;height:42px;object-fit:contain;border-radius:12px;background:#fff}.logo span{font-size:1.25rem}nav{display:none;align-items:center;gap:8px}nav a{color:#fff;padding:10px 14px;border-radius:999px;font-weight:700;font-size:.95rem;opacity:.92}nav a:hover,nav a.active{background:rgba(255,255,255,.16);opacity:1}.nav-toggle{display:none}.mobile-nav{width:44px;height:44px;border:1px solid rgba(255,255,255,.35);border-radius:14px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:5px}.mobile-nav span{width:20px;height:2px;background:#fff;border-radius:2px}.nav-toggle:checked~nav{display:flex;position:absolute;left:16px;right:16px;top:76px;flex-direction:column;align-items:stretch;background:var(--dark);padding:14px;border-radius:18px;box-shadow:var(--shadow)}.nav-toggle:checked~nav a{display:block}.hero,.banner{background:linear-gradient(135deg,var(--primary),#111d42 78%);color:#fff;padding:64px 0 38px}.hero-wrap{display:grid;gap:28px;align-items:center}.hero h1{font-size:2rem;line-height:1.18;margin:0 0 16px}.hero p{margin:0 0 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p{margin:0;color:var(--muted)}.grid{display:grid;gap:18px}.card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);padding:22px}.card h2,.card h3{margin-top:0;color:var(--black);line-height:1.3}.card p{color:#444}.notice{border-left:5px solid var(--primary);background:#fff;border-radius:18px;padding:18px 20px;box-shadow:var(--shadow);color:#333}.notice strong{color:var(--primary)}.faq{display:grid;gap:14px}.faq details{background:#fff;border:1px solid var(--border);border-radius:18px;padding:16px 18px;box-shadow:0 10px 26px rgba(17,17,17,.05)}.faq summary{cursor:pointer;font-weight:800;color:var(--black)}.faq p{margin-bottom:0;color:#444}.list{padding-left:20px}.list li{margin:8px 0}.cta-box{background:var(--dark);color:#fff;border-radius:24px;padding:28px;box-shadow:var(--shadow)}.cta-box p{color:rgba(255,255,255,.82)}.links{display:flex;flex-wrap:wrap;gap:12px;margin-top:16px}.links a{color:var(--primary);font-weight:800}.footer{background:var(--primary);color:#fff;padding:42px 0 18px}.footer-grid{display:grid;gap:24px}.footer h2,.footer h3{margin-top:0}.footer p{color:rgba(255,255,255,.86)}.footer a{display:block;margin:8px 0;color:#fff;font-weight:700;opacity:.9}.footer-bottom{border-top:1px solid rgba(255,255,255,.18);margin-top:22px;padding-top:16px;color:rgba(255,255,255,.8);font-size:.92rem}.page-hero{background:#fff;padding:44px 0;border-bottom:1px solid var(--border)}.page-hero h1{margin:0 0 12px;font-size:2rem;color:var(--black);line-height:1.18}.page-hero p{margin:0;color:var(--muted)}.step{display:flex;gap:14px;align-items:flex-start}.step span{width:36px;height:36px;flex:0 0 36px;border-radius:12px;background:var(--primary);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:900}.kbd{display:inline-flex;background:rgba(37,66,144,.1);color:var(--primary);padding:3px 8px;border-radius:999px;font-weight:800}.muted{color:var(--muted)}@media (min-width:768px){.hero h1{font-size:2.7rem}.hero-wrap{grid-template-columns:1.05fr .95fr}.grid.two{grid-template-columns:repeat(2,1fr)}.grid.three{grid-template-columns:repeat(3,1fr)}.footer-grid{grid-template-columns:1.4fr .8fr 1fr}.page-hero h1{font-size:2.45rem}}@media (min-width:1024px){nav{display:flex}.mobile-nav{display:none}.hero{padding:84px 0 58px}.hero h1{font-size:3.25rem}section{padding:58px 0}.card{padding:28px}.grid.four{grid-template-columns:repeat(4,1fr)}}