:root{
    --primary:#14bfed;
    --black:#111111;
    --dark:#1C1C1C;
    --mid:#2B2B2B;
    --light:#F5F5F5;
    --white:#ffffff;
    --text:#222222;
    --muted:#666666;
    --line:rgba(17,17,17,.1);
    --shadow:0 14px 35px rgba(17,17,17,.08);
    --radius:18px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:Arial,Helvetica,sans-serif;background:#ffffff;color:var(--text);line-height:1.7;font-size:16px}
a{color:inherit;text-decoration:none}
img{max-width:100%;height:auto;display:block}
header,.site-header{background:linear-gradient(135deg,var(--primary),#0b9bc2);color:#fff;position:sticky;top:0;z-index:50;box-shadow:0 8px 20px rgba(0,0,0,.08)}
.container{width:min(1120px,calc(100% - 32px));margin:0 auto}
.header-wrap{display:flex;align-items:center;justify-content:space-between;min-height:72px;gap:16px}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:22px;letter-spacing:.5px}
.logo img{width:42px;height:42px;object-fit:contain;border-radius:12px;background:#fff;padding:4px}
.nav-toggle{display:none}
.mobile-nav{width:42px;height:42px;border:1px solid rgba(255,255,255,.35);border-radius:14px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:5px;cursor:pointer}
.mobile-nav span{width:20px;height:2px;background:#fff;border-radius:3px}
nav,.nav-menu{display:none;position:absolute;left:16px;right:16px;top:72px;background:#fff;color:var(--black);border-radius:18px;box-shadow:var(--shadow);padding:10px}
.nav-menu a{display:block;padding:12px 14px;border-radius:12px;font-weight:700}
.nav-menu a:hover{background:var(--light);color:#087fa0}
.nav-toggle:checked ~ .nav-menu{display:block}
.hero,.banner{background:linear-gradient(145deg,#effbff,#ffffff 45%,#edfaff);padding:54px 0 42px;overflow:hidden}
.hero-grid{display:grid;gap:30px;align-items:center}
.hero h1,.banner h1{font-size:34px;line-height:1.18;margin:0 0 18px;color:var(--black);letter-spacing:-.5px}
.hero p,.banner p{margin:0 0 18px;color:#444;font-size:17px}
.hero-visual{background:linear-gradient(160deg,#fff,#daf6fd);border:1px solid rgba(20,191,237,.22);border-radius:28px;padding:18px;box-shadow:var(--shadow)}
.hero-visual img{margin:auto;border-radius:22px}
.tags{display:flex;flex-wrap:wrap;gap:10px;margin:22px 0}
.tag{background:rgba(20,191,237,.12);color:#087fa0;padding:8px 12px;border-radius:999px;font-weight:700;font-size:14px;border:1px solid rgba(20,191,237,.25)}
section{padding:42px 0}
.section-title{font-size:28px;line-height:1.2;margin:0 0 14px;color:var(--black)}
.section-lead{color:var(--muted);margin:0 0 24px;max-width:780px}
.grid{display:grid;gap:18px}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow)}
.card h2,.card h3{margin-top:0;color:var(--black);line-height:1.25}
.card p:last-child{margin-bottom:0}
.btn{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:12px 20px;background:var(--primary);color:#071f27;border-radius:16px;font-weight:800;border:0;box-shadow:0 12px 24px rgba(20,191,237,.26);transition:.2s ease}
.btn:hover{transform:translateY(-1px);box-shadow:0 16px 30px rgba(20,191,237,.32)}
.notice{border-left:5px solid var(--primary);background:#eefbff;border-radius:18px;padding:18px 20px;margin:22px 0;color:#184b59}
.notice strong{color:#087fa0}
.faq{display:grid;gap:14px}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:18px;padding:18px;box-shadow:0 10px 24px rgba(17,17,17,.05)}
.faq-item h2,.faq-item h3{margin:0 0 8px;font-size:19px;color:var(--black)}
.page-hero{background:var(--light);padding:44px 0;border-bottom:1px solid var(--line)}
.page-hero h1{margin:0 0 12px;font-size:32px;line-height:1.2;color:var(--black)}
.breadcrumb{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:16px;color:#087fa0;font-weight:700;font-size:14px}
.list{padding-left:20px}
.list li{margin:9px 0}
.link-row{display:flex;flex-wrap:wrap;gap:12px;margin-top:18px}
.link-row a{color:#087fa0;font-weight:700;text-decoration:underline;text-underline-offset:3px}
.footer{background:linear-gradient(135deg,var(--dark),#0a7897);color:#fff;padding:44px 0 18px;margin-top:24px}
.footer-grid{display:grid;gap:24px}
.footer h3{margin:0 0 10px}.footer p{color:rgba(255,255,255,.82);margin:0 0 10px}.footer a{display:block;color:rgba(255,255,255,.88);padding:4px 0}.footer-brand{font-size:26px;font-weight:900;margin-bottom:10px}.footer-bottom{border-top:1px solid rgba(255,255,255,.18);margin-top:28px;padding-top:18px;color:rgba(255,255,255,.75);font-size:14px}
@media (min-width:768px){
    .hero h1,.banner h1{font-size:46px}.page-hero h1{font-size:42px}.hero-grid{grid-template-columns:1.1fr .9fr}.grid.two{grid-template-columns:repeat(2,1fr)}.grid.three{grid-template-columns:repeat(3,1fr)}.footer-grid{grid-template-columns:1.4fr .8fr 1.2fr}.mobile-nav{display:none}nav,.nav-menu{display:flex;position:static;background:transparent;color:#fff;box-shadow:none;padding:0;gap:8px}.nav-menu a{padding:9px 12px}.nav-menu a:hover{background:rgba(255,255,255,.16);color:#fff}
}
@media (min-width:1024px){
    body{font-size:17px}.hero,.banner{padding:78px 0 64px}section{padding:56px 0}.grid.four{grid-template-columns:repeat(4,1fr)}.hero h1,.banner h1{font-size:54px}.card{padding:26px}
}