/* ===== RESET & BASE ===== */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;font-size:16px}
body{font-family:'Segoe UI',Roboto,Helvetica,Arial,sans-serif;color:#333;background:#fff;line-height:1.7}
a{color:#17a2b8;text-decoration:none;transition:color .2s}
a:hover{color:#138496}
img{max-width:100%;height:auto}
ul,ol{padding-left:1.4em}
table{border-collapse:collapse;width:100%}

/* ===== UTILITIES ===== */
.container{max-width:1100px;margin:0 auto;padding:0 20px}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap}
.fade-in{opacity:0;transform:translateY(24px);transition:opacity .6s ease,transform .6s ease}
.fade-in.visible{opacity:1;transform:translateY(0)}

/* ===== HEADER ===== */
.site-header{position:sticky;top:0;z-index:100;background:#1b2a4a;box-shadow:0 2px 8px rgba(0,0,0,.18)}
.header-inner{display:flex;align-items:center;justify-content:space-between;padding:0 20px;max-width:1100px;margin:0 auto;height:64px}
.logo{font-size:1.2rem;font-weight:700;color:#fff;letter-spacing:.5px}
.logo span{color:#17a2b8}
.nav-links{display:flex;gap:24px;list-style:none;padding:0}
.nav-links a{color:#ffffffcc;font-size:.95rem;font-weight:500;transition:color .2s}
.nav-links a:hover,.nav-links a.active{color:#fff}
.burger{display:none;flex-direction:column;gap:5px;background:none;border:none;cursor:pointer;padding:4px}
.burger span{display:block;width:26px;height:3px;background:#fff;border-radius:2px;transition:transform .3s,opacity .3s}

/* mobile nav */
@media(max-width:768px){
  .nav-links{position:fixed;top:64px;left:0;right:0;background:#1b2a4a;flex-direction:column;align-items:center;gap:0;max-height:0;overflow:hidden;transition:max-height .35s ease}
  .nav-links.open{max-height:400px}
  .nav-links li{width:100%;text-align:center}
  .nav-links a{display:block;padding:14px 0;border-top:1px solid #ffffff12}
  .burger{display:flex}
}

/* ===== HERO ===== */
.hero{background:linear-gradient(135deg,#1b2a4a 0%,#17a2b8 100%);color:#fff;padding:72px 20px 64px;text-align:center}
.hero h1{font-size:2.2rem;line-height:1.25;margin-bottom:18px;max-width:800px;margin-left:auto;margin-right:auto}
.hero p{font-size:1.15rem;max-width:640px;margin:0 auto 28px;opacity:.92}
.btn-cta{display:inline-block;background:#28a745;color:#fff;font-size:1.05rem;font-weight:600;padding:14px 36px;border-radius:6px;border:none;cursor:pointer;transition:background .2s,transform .15s}
.btn-cta:hover{background:#218838;transform:translateY(-2px);color:#fff}

/* ===== BREADCRUMB ===== */
.breadcrumb{padding:14px 0;font-size:.85rem;color:#666}
.breadcrumb a{color:#17a2b8}
.breadcrumb span{margin:0 6px;color:#999}

/* ===== TOC ===== */
.toc{background:#f0f6fb;border-left:4px solid #17a2b8;padding:22px 28px;border-radius:6px;margin:32px 0}
.toc h2{font-size:1.1rem;margin-bottom:12px;color:#1b2a4a}
.toc ol{padding-left:1.2em}
.toc li{margin-bottom:6px}
.toc a{font-size:.95rem;color:#1b2a4a;font-weight:500}
.toc a:hover{color:#17a2b8}

/* ===== SECTIONS ===== */
.section{padding:56px 0}
.section:nth-child(even){background:#f8f9fa}
.section h2{font-size:1.65rem;color:#1b2a4a;margin-bottom:18px;line-height:1.3}
.section h3{font-size:1.25rem;color:#1b2a4a;margin:28px 0 12px}
.section p,.section li{margin-bottom:12px}

/* ===== PRICE TABLE ===== */
.price-table{overflow-x:auto;margin:24px 0}
.price-table table{min-width:560px}
.price-table th,.price-table td{padding:12px 16px;text-align:left;border-bottom:1px solid #dee2e6}
.price-table th{background:#1b2a4a;color:#fff;font-weight:600;font-size:.92rem}
.price-table tr:hover td{background:#f0f6fb}
.price-table td{font-size:.95rem}

/* ===== FAQ ACCORDION ===== */
.faq-item{border:1px solid #dee2e6;border-radius:6px;margin-bottom:12px;overflow:hidden}
.faq-question{width:100%;background:#fff;border:none;padding:16px 48px 16px 20px;text-align:left;font-size:1rem;font-weight:600;color:#1b2a4a;cursor:pointer;position:relative;transition:background .2s}
.faq-question:hover{background:#f0f6fb}
.faq-question::after{content:'+';position:absolute;right:20px;top:50%;transform:translateY(-50%);font-size:1.4rem;color:#17a2b8;transition:transform .3s}
.faq-item.open .faq-question::after{content:'\2212'}
.faq-answer{max-height:0;overflow:hidden;transition:max-height .35s ease,padding .35s ease;padding:0 20px}
.faq-item.open .faq-answer{max-height:600px;padding:0 20px 18px}

/* ===== CTA BANNER ===== */
.cta-banner{background:linear-gradient(135deg,#17a2b8,#1b2a4a);color:#fff;text-align:center;padding:48px 20px;border-radius:10px;margin:40px 0}
.cta-banner h2{font-size:1.5rem;margin-bottom:12px}
.cta-banner p{margin-bottom:22px;opacity:.9}

/* ===== CARDS ===== */
.card-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:24px;margin-top:28px}
.card{background:#fff;border:1px solid #e0e0e0;border-radius:8px;padding:28px 24px;transition:box-shadow .25s,transform .2s}
.card:hover{box-shadow:0 6px 20px rgba(0,0,0,.08);transform:translateY(-3px)}
.card h3{color:#1b2a4a;margin-bottom:10px;font-size:1.15rem}
.card p{font-size:.95rem;color:#555}

/* ===== CONTACT FORM ===== */
.form-group{margin-bottom:20px}
.form-group label{display:block;font-weight:600;margin-bottom:6px;color:#1b2a4a}
.form-group input,.form-group textarea,.form-group select{width:100%;padding:12px 14px;border:1px solid #ccc;border-radius:6px;font-size:1rem;font-family:inherit;transition:border-color .2s}
.form-group input:focus,.form-group textarea:focus,.form-group select:focus{outline:none;border-color:#17a2b8;box-shadow:0 0 0 3px rgba(23,162,184,.15)}
.form-group textarea{min-height:140px;resize:vertical}

/* ===== FOOTER ===== */
.site-footer{background:#1b2a4a;color:#ffffffcc;padding:48px 20px 24px}
.footer-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:32px;max-width:1100px;margin:0 auto 32px}
.footer-grid h4{color:#fff;margin-bottom:14px;font-size:1rem}
.footer-grid ul{list-style:none;padding:0}
.footer-grid li{margin-bottom:8px}
.footer-grid a{color:#ffffffaa;font-size:.92rem}
.footer-grid a:hover{color:#fff}
.footer-bottom{text-align:center;padding-top:24px;border-top:1px solid #ffffff1a;font-size:.85rem;color:#ffffff80}

/* ===== PAGE CONTENT ===== */
.page-content{padding:48px 0 56px}
.page-content h1{font-size:2rem;color:#1b2a4a;margin-bottom:12px}
.page-content h2{font-size:1.5rem;color:#1b2a4a;margin:36px 0 14px}
.page-content h3{font-size:1.2rem;color:#1b2a4a;margin:24px 0 10px}
.page-content p,.page-content li{margin-bottom:12px;line-height:1.75}
.page-content ul,.page-content ol{margin-bottom:18px}

/* ===== 404 ===== */
.page-404{text-align:center;padding:100px 20px}
.page-404 h1{font-size:5rem;color:#17a2b8;margin-bottom:12px}
.page-404 p{font-size:1.2rem;margin-bottom:28px}

/* ===== RESPONSIVE ===== */
@media(max-width:600px){
  .hero{padding:48px 16px 40px}
  .hero h1{font-size:1.6rem}
  .section{padding:40px 0}
  .cta-banner{padding:32px 16px}
  .price-table th,.price-table td{padding:10px 10px;font-size:.85rem}
}