/* tdtevse.com — self-contained stylesheet (2026-11-01) */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,"Noto Sans",sans-serif;color:#1f2933;line-height:1.65;background:#fff}
img{max-width:100%;height:auto;display:block}
a{color:#0b4fa2;text-decoration:none}
a:hover{text-decoration:underline}
.wrap{max-width:1180px;margin:0 auto;padding:0 20px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}

/* header */
.site-header{border-bottom:1px solid #e5e9ef;background:#fff}
.header-top{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:14px 0;flex-wrap:wrap}
.logo img{width:150px;height:auto}
.header-contact{display:flex;gap:24px;flex-wrap:wrap;font-size:14px;color:#3e4c59}
.header-contact strong{color:#0b4fa2;font-weight:600}
.main-nav{background:#0b4fa2}
.main-nav ul{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap}
.main-nav a{display:block;color:#fff;padding:13px 22px;font-size:15px;font-weight:500}
.main-nav a:hover,.main-nav a.active{background:#083a78;text-decoration:none}

/* hero */
.hero{position:relative;color:#fff;background:#0b2e5c}
.hero img{width:100%;height:420px;object-fit:cover;opacity:.42}
.hero-inner{position:absolute;inset:0;display:flex;align-items:center}
.hero-inner .wrap{max-width:1180px}
.hero h1{font-size:42px;line-height:1.15;margin:0 0 14px;max-width:760px;text-shadow:0 2px 12px rgba(0,0,0,.35)}
.hero p{font-size:18px;max-width:640px;margin:0 0 24px;text-shadow:0 1px 8px rgba(0,0,0,.45)}
.btn{display:inline-block;background:#1e9e4a;color:#fff;padding:13px 26px;border-radius:6px;font-weight:600}
.btn:hover{background:#178a3f;text-decoration:none}
.btn.secondary{background:#fff;color:#0b4fa2}
.btn.secondary:hover{background:#eef4fb}

/* sections */
section{padding:56px 0}
section.alt{background:#f5f8fb}
h2{font-size:30px;line-height:1.25;margin:0 0 18px;color:#0b2e5c}
h3{font-size:21px;margin:0 0 10px;color:#0b2e5c}
p{margin:0 0 14px}
.lead{font-size:18px;color:#3e4c59;max-width:760px}
.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.card{background:#fff;border:1px solid #e5e9ef;border-radius:10px;padding:24px;box-shadow:0 2px 10px rgba(16,42,74,.05)}
.card img{border-radius:6px;margin-bottom:16px}
.card h3{margin-top:0}
.tag{display:inline-block;background:#e8f4ec;color:#178a3f;font-size:13px;font-weight:600;padding:4px 10px;border-radius:999px;margin-bottom:10px}

/* product page */
.product{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:start}
.gallery-main{border:1px solid #e5e9ef;border-radius:10px;overflow:hidden;background:#fff}
.gallery-thumbs{display:flex;gap:10px;margin-top:12px}
.gallery-thumbs img{width:92px;height:70px;object-fit:cover;border:1px solid #e5e9ef;border-radius:6px;cursor:pointer}
.spec-table{width:100%;border-collapse:collapse;margin:0 0 28px;font-size:15px}
.spec-table th,.spec-table td{border:1px solid #dde3ea;padding:9px 12px;text-align:left;vertical-align:top}
.spec-table th{background:#f5f8fb;width:34%;font-weight:600;color:#0b2e5c}
.faq dt{font-weight:700;margin-top:18px;color:#0b2e5c}
.faq dd{margin:6px 0 0}

/* form */
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.form-grid .full{grid-column:1/-1}
label{display:block;font-size:14px;font-weight:600;margin-bottom:5px;color:#3e4c59}
input[type=text],input[type=email],input[type=tel],textarea{width:100%;padding:11px 12px;border:1px solid #c7d0da;border-radius:6px;font:inherit;background:#fff}
textarea{min-height:130px;resize:vertical}
.required{color:#c0293a}
.form-note{font-size:13px;color:#616e7c;margin-top:10px}
.form-msg{margin-top:14px;font-weight:600}
.form-msg.ok{color:#178a3f}
.form-msg.err{color:#c0293a}

/* contact list */
.contact-list{list-style:none;margin:0;padding:0}
.contact-list li{padding:12px 0;border-bottom:1px solid #e5e9ef}
.contact-list strong{display:inline-block;min-width:92px;color:#0b2e5c}

/* footer */
.site-footer{background:#0b2e5c;color:#c9d6e6;padding:46px 0 24px;font-size:14px}
.site-footer a{color:#fff}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:30px}
.site-footer h4{color:#fff;font-size:16px;margin:0 0 12px}
.site-footer ul{list-style:none;margin:0;padding:0}
.site-footer li{margin:0 0 8px}
.copyright{border-top:1px solid rgba(255,255,255,.18);margin-top:30px;padding-top:18px;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px}

@media (max-width:900px){
  .grid,.product,.footer-grid{grid-template-columns:1fr}
  .hero h1{font-size:30px}
  .hero img{height:460px}
  .form-grid{grid-template-columns:1fr}
  .main-nav a{padding:11px 14px;font-size:14px}
  .header-contact{font-size:13px;gap:12px}
}