:root {
  --navy: #0b2545;
  --navy-2: #13315c;
  --steel: #53647a;
  --orange: #f26522;
  --orange-d: #d4531a;
  --bg: #f5f7fa;
  --line: #e2e8f0;
  --txt: #22303f;
  --muted: #64748b;
  --radius: 10px;
  --shadow: 0 8px 24px rgba(11, 37, 69, 0.08);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: "Segoe UI", "Helvetica Neue", Arial, "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--txt);
  background: #fff;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }
.container { width: min(1180px, 92%); margin: 0 auto; }

/* ---------- Top bar ---------- */
.topbar {
  background: var(--navy);
  color: #cdd9e8;
  font-size: 13px;
}
.topbar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 6px 0;
}
.topbar span { margin-right: 18px; }
.topbar a { color: #fff; }
.topbar a:hover { color: var(--orange); }

/* ---------- Header ---------- */
header.site-header {
  background: #fff;
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  z-index: 100;
}
.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 0;
}
.logo { display: flex; align-items: center; gap: 10px; }
.logo-badge {
  width: 44px; height: 44px;
  background: linear-gradient(135deg, var(--navy), var(--navy-2));
  color: #fff;
  border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  font-weight: 800; font-size: 20px;
  letter-spacing: 0.5px;
}
.logo-badge em { color: var(--orange); font-style: normal; }
.logo-text strong {
  display: block;
  font-size: 18px;
  color: var(--navy);
  line-height: 1.2;
  letter-spacing: 0.3px;
}
.logo-text small {
  display: block;
  font-size: 11px;
  color: var(--muted);
  letter-spacing: 1.5px;
  text-transform: uppercase;
}
nav.main-nav ul { display: flex; gap: 6px; align-items: center; }
nav.main-nav a {
  display: block;
  padding: 10px 16px;
  font-weight: 600;
  font-size: 15px;
  color: var(--navy);
  border-radius: 6px;
  transition: 0.2s;
}
nav.main-nav a:hover, nav.main-nav a.active { color: var(--orange); background: #fff4ec; }
.btn-quote {
  margin-left: 14px;
  background: var(--orange) !important;
  color: #fff !important;
  padding: 11px 22px !important;
  border-radius: 6px;
  font-weight: 700;
  box-shadow: 0 4px 14px rgba(242, 101, 34, 0.35);
}
.btn-quote:hover { background: var(--orange-d) !important; }
.nav-toggle { display: none; background: none; border: 0; font-size: 26px; color: var(--navy); cursor: pointer; }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  color: #fff;
  background:
    linear-gradient(105deg, rgba(7, 24, 46, 0.94) 0%, rgba(13, 40, 74, 0.85) 55%, rgba(19, 49, 92, 0.65) 100%),
    repeating-linear-gradient(115deg, #16283f 0 60px, #142338 60px 120px);
  padding: 110px 0 130px;
  overflow: hidden;
}
.hero::after {
  content: "";
  position: absolute;
  right: -80px; bottom: -140px;
  width: 520px; height: 520px;
  border: 44px solid rgba(242, 101, 34, 0.16);
  border-radius: 50%;
}
.hero-kicker {
  display: inline-block;
  background: rgba(242, 101, 34, 0.15);
  border: 1px solid rgba(242, 101, 34, 0.5);
  color: #ffb38a;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  padding: 7px 16px;
  border-radius: 999px;
  margin-bottom: 22px;
}
.hero h1 {
  font-size: clamp(32px, 5vw, 52px);
  line-height: 1.15;
  font-weight: 800;
  max-width: 760px;
  margin-bottom: 18px;
}
.hero h1 em { color: var(--orange); font-style: normal; }
.hero p.lead {
  font-size: 18px;
  color: #c6d3e2;
  max-width: 640px;
  margin-bottom: 34px;
}
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }
.btn {
  display: inline-block;
  padding: 14px 30px;
  border-radius: 6px;
  font-weight: 700;
  font-size: 15px;
  transition: 0.2s;
  cursor: pointer;
  border: 0;
}
.btn-primary { background: var(--orange); color: #fff; }
.btn-primary:hover { background: var(--orange-d); transform: translateY(-2px); }
.btn-ghost { background: transparent; color: #fff; border: 2px solid rgba(255, 255, 255, 0.45); }
.btn-ghost:hover { border-color: #fff; background: rgba(255, 255, 255, 0.08); }

.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 70px;
  position: relative;
  z-index: 2;
}
.hero-stats .stat {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.14);
  backdrop-filter: blur(4px);
  border-radius: var(--radius);
  padding: 22px;
}
.hero-stats .num { font-size: 30px; font-weight: 800; color: #fff; }
.hero-stats .num span { color: var(--orange); }
.hero-stats .lbl { font-size: 13px; color: #a9bccf; margin-top: 4px; }

/* ---------- Section base ---------- */
section.block { padding: 84px 0; }
section.block.alt { background: var(--bg); }
.sec-head { text-align: center; max-width: 680px; margin: 0 auto 52px; }
.sec-head .tag {
  color: var(--orange);
  font-weight: 800;
  letter-spacing: 2.5px;
  text-transform: uppercase;
  font-size: 13px;
}
.sec-head h2 { font-size: clamp(26px, 3.4vw, 36px); color: var(--navy); margin: 10px 0 12px; }
.sec-head p { color: var(--muted); font-size: 16px; }
.sec-head.light h2 { color: #fff; }
.sec-head.light p { color: #b3c2d4; }

/* ---------- Products ---------- */
.prod-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
}
.prod-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  transition: 0.25s;
  display: flex;
  flex-direction: column;
}
.prod-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow);
  border-color: #cbd7e5;
}
.prod-thumb {
  height: 200px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 15px;
  font-weight: 700;
  color: rgba(255, 255, 255, 0.85);
  letter-spacing: 1px;
  text-align: center;
  padding: 0 18px;
}
.prod-thumb.t1 { background: linear-gradient(135deg, #33475e, #0b2545); }
.prod-thumb.t2 { background: linear-gradient(135deg, #5c7089, #2c3e50); }
.prod-thumb.t3 { background: linear-gradient(135deg, #7b8a9a, #465666); }
.prod-thumb.t4 { background: linear-gradient(135deg, #45607e, #16324f); }
.prod-thumb.t5 { background: linear-gradient(135deg, #6e5a4e, #3a2f28); }
.prod-thumb.t6 { background: linear-gradient(135deg, #5b6b52, #2d3a2a); }
.prod-body { padding: 22px 22px 24px; flex: 1; display: flex; flex-direction: column; }
.prod-body h3 { color: var(--navy); font-size: 19px; margin-bottom: 8px; }
.prod-body p { color: var(--muted); font-size: 14.5px; flex: 1; }
.prod-body .specs {
  margin: 14px 0 16px;
  font-size: 13px;
  color: var(--steel);
  background: var(--bg);
  border-left: 3px solid var(--orange);
  padding: 8px 12px;
  border-radius: 0 6px 6px 0;
}
.prod-body a.link {
  color: var(--orange);
  font-weight: 700;
  font-size: 14px;
}
.prod-body a.link:hover { text-decoration: underline; }

/* ---------- Features ---------- */
.feat-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.feat {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 30px 24px;
  text-align: center;
  transition: 0.25s;
}
.feat:hover { box-shadow: var(--shadow); transform: translateY(-4px); }
.feat .ico {
  width: 62px; height: 62px;
  margin: 0 auto 16px;
  border-radius: 50%;
  background: #fff4ec;
  display: flex; align-items: center; justify-content: center;
  font-size: 26px;
}
.feat h3 { color: var(--navy); font-size: 17px; margin-bottom: 8px; }
.feat p { color: var(--muted); font-size: 14px; }

/* ---------- About strip ---------- */
.about-grid {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: 56px;
  align-items: center;
}
.about-visual {
  background: linear-gradient(135deg, var(--navy), var(--navy-2));
  border-radius: var(--radius);
  min-height: 360px;
  position: relative;
  overflow: hidden;
  display: flex; align-items: flex-end;
  color: #9db2c8;
  padding: 26px;
  font-size: 13px;
}
.about-visual::before {
  content: "";
  position: absolute; inset: 0;
  background:
    repeating-linear-gradient(90deg, rgba(255,255,255,0.05) 0 2px, transparent 2px 48px),
    repeating-linear-gradient(0deg, rgba(255,255,255,0.05) 0 2px, transparent 2px 48px);
}
.about-visual .beam {
  position: absolute;
  background: rgba(242, 101, 34, 0.75);
}
.about-visual .b1 { left: 12%; bottom: 18%; width: 34px; height: 56%; }
.about-visual .b2 { left: 12%; bottom: 18%; width: 62%; height: 26px; }
.about-visual .b3 { right: 14%; top: 12%; width: 30px; height: 46%; background: rgba(255,255,255,0.35); }
.about-visual .b4 { right: 14%; top: 12%; width: 40%; height: 24px; background: rgba(255,255,255,0.35); }
.about-copy h2 { color: var(--navy); font-size: clamp(24px, 3vw, 32px); margin-bottom: 16px; }
.about-copy p { color: var(--muted); margin-bottom: 14px; }
.about-copy ul { margin: 18px 0 26px; }
.about-copy li {
  padding: 6px 0 6px 30px;
  position: relative;
  color: var(--txt);
  font-weight: 600;
  font-size: 15px;
}
.about-copy li::before {
  content: "✓";
  position: absolute; left: 0; top: 5px;
  width: 20px; height: 20px;
  background: var(--orange);
  color: #fff;
  border-radius: 50%;
  font-size: 12px;
  display: flex; align-items: center; justify-content: center;
  font-weight: 800;
}

/* ---------- CTA band ---------- */
.cta-band {
  background: linear-gradient(100deg, var(--navy) 0%, var(--navy-2) 100%);
  color: #fff;
  padding: 64px 0;
}
.cta-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 30px;
  flex-wrap: wrap;
}
.cta-inner h2 { font-size: clamp(22px, 3vw, 30px); margin-bottom: 8px; }
.cta-inner p { color: #b7c6d8; }

/* ---------- Page hero (inner pages) ---------- */
.page-hero {
  background:
    linear-gradient(100deg, rgba(7, 24, 46, 0.93), rgba(19, 49, 92, 0.8)),
    repeating-linear-gradient(115deg, #16283f 0 60px, #142338 60px 120px);
  color: #fff;
  padding: 66px 0;
}
.page-hero h1 { font-size: clamp(28px, 4vw, 40px); margin-bottom: 8px; }
.page-hero p { color: #b7c6d8; font-size: 16px; max-width: 640px; }
.breadcrumb { font-size: 13px; color: #8fa5bd; margin-top: 14px; }
.breadcrumb a { color: var(--orange); }

/* ---------- Tables ---------- */
.spec-table {
  width: 100%;
  border-collapse: collapse;
  background: #fff;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  font-size: 14.5px;
}
.spec-table th {
  background: var(--navy);
  color: #fff;
  text-align: left;
  padding: 14px 18px;
  font-weight: 700;
  white-space: nowrap;
}
.spec-table td {
  padding: 13px 18px;
  border-bottom: 1px solid var(--line);
  color: var(--txt);
}
.spec-table tr:nth-child(even) td { background: #f8fafc; }
.spec-table tr:hover td { background: #fff4ec; }
.table-scroll { overflow-x: auto; border-radius: var(--radius); }

/* ---------- Detail blocks ---------- */
.detail-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 26px;
}
.detail-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px;
}
.detail-card h3 { color: var(--navy); font-size: 18px; margin-bottom: 14px; padding-bottom: 12px; border-bottom: 2px solid #fff4ec; }
.detail-card ul li {
  padding: 7px 0 7px 24px;
  position: relative;
  color: var(--muted);
  font-size: 14.5px;
}
.detail-card ul li::before {
  content: "▪";
  position: absolute; left: 4px;
  color: var(--orange);
  font-size: 16px;
}
.detail-card.full { grid-column: 1 / -1; }

/* ---------- Contact ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.15fr;
  gap: 40px;
  align-items: start;
}
.info-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 30px;
}
.info-item { display: flex; gap: 16px; padding: 16px 0; border-bottom: 1px dashed var(--line); }
.info-item:last-child { border-bottom: 0; }
.info-item .ic {
  width: 46px; height: 46px;
  flex: 0 0 46px;
  background: #fff4ec;
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  font-size: 20px;
}
.info-item h4 { color: var(--navy); font-size: 15px; margin-bottom: 2px; }
.info-item p { color: var(--muted); font-size: 14.5px; }
.form-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 34px;
  box-shadow: var(--shadow);
}
.form-card h3 { color: var(--navy); font-size: 20px; margin-bottom: 20px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.field { margin-bottom: 16px; }
.field label { display: block; font-size: 13.5px; font-weight: 700; color: var(--navy); margin-bottom: 6px; }
.field input, .field select, .field textarea {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid #cfdae6;
  border-radius: 6px;
  font-size: 14.5px;
  font-family: inherit;
  color: var(--txt);
  background: #fbfdff;
  transition: 0.2s;
}
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none;
  border-color: var(--orange);
  box-shadow: 0 0 0 3px rgba(242, 101, 34, 0.12);
}
.form-msg { margin-top: 14px; font-size: 14px; color: #0a7d43; font-weight: 600; display: none; }
.form-msg.show { display: block; }

/* ---------- Footer ---------- */
footer.site-footer {
  background: #081a31;
  color: #93a7bd;
  padding: 64px 0 0;
  font-size: 14.5px;
}
.foot-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: 40px;
  padding-bottom: 44px;
}
.foot-grid h4 { color: #fff; font-size: 16px; margin-bottom: 16px; }
.foot-grid p { margin-bottom: 10px; }
.foot-grid a:hover { color: var(--orange); }
.foot-grid ul li { padding: 5px 0; }
.social-row { display: flex; gap: 10px; margin-top: 16px; }
.social-row a {
  width: 38px; height: 38px;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.08);
  display: flex; align-items: center; justify-content: center;
  font-size: 15px;
  color: #fff;
  transition: 0.2s;
}
.social-row a:hover { background: var(--orange); }
.foot-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 18px 0;
  font-size: 13px;
  color: #6d8299;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
}

/* WhatsApp float */
.wa-float {
  position: fixed;
  right: 22px; bottom: 22px;
  width: 56px; height: 56px;
  background: #25d366;
  color: #fff;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 26px;
  box-shadow: 0 8px 24px rgba(37, 211, 102, 0.4);
  z-index: 200;
  transition: 0.2s;
}
.wa-float:hover { transform: scale(1.08); }

/* ---------- Responsive ---------- */
@media (max-width: 960px) {
  .prod-grid, .feat-grid { grid-template-columns: repeat(2, 1fr); }
  .about-grid, .contact-grid, .detail-grid { grid-template-columns: 1fr; }
  .foot-grid { grid-template-columns: repeat(2, 1fr); }
  .hero-stats { grid-template-columns: repeat(2, 1fr); }
  nav.main-nav {
    position: fixed;
    top: 73px; left: 0; right: 0;
    background: #fff;
    border-bottom: 1px solid var(--line);
    box-shadow: var(--shadow);
    display: none;
    padding: 10px 0 18px;
  }
  nav.main-nav.open { display: block; }
  nav.main-nav ul { flex-direction: column; align-items: stretch; gap: 0; }
  nav.main-nav a { padding: 13px 6%; }
  .btn-quote { margin: 10px 6% 0; display: inline-block; }
  .nav-toggle { display: block; }
}
@media (max-width: 620px) {
  .prod-grid, .feat-grid, .form-row { grid-template-columns: 1fr; }
  .topbar .container span:nth-child(2) { display: none; }
  .hero { padding: 80px 0 90px; }
  section.block { padding: 60px 0; }
}