:root {
  --blue-950: #071a2f;
  --blue-900: #0b2744;
  --blue-800: #113a61;
  --blue-700: #165b94;
  --blue-100: #e9f3fb;
  --steel-800: #26313d;
  --steel-600: #52606d;
  --steel-300: #cfd8e3;
  --steel-100: #f5f8fb;
  --white: #ffffff;
  --accent: #18a0d8;
  --green: #1fa463;
  --shadow: 0 18px 45px rgba(7, 26, 47, .12);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: Inter, Arial, Helvetica, sans-serif;
  color: var(--steel-800);
  background: var(--white);
  line-height: 1.6;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; height: auto; display: block; }

.container { width: min(1180px, calc(100% - 40px)); margin: 0 auto; }
.topbar { background: #03101f; color: #d9e8f5; font-size: 14px; }
.topbar .container { display: flex; justify-content: space-between; gap: 18px; padding: 8px 0; flex-wrap: wrap; }
.header { position: sticky; top: 0; z-index: 50; background: rgba(255,255,255,.96); border-bottom: 1px solid #e7edf4; backdrop-filter: blur(12px); }
.nav { display: flex; align-items: center; justify-content: space-between; gap: 18px; padding: 14px 0; }
.brand { display: flex; align-items: center; gap: 12px; min-width: 430px; }
.brand-logo { width: 178px; height: auto; flex: 0 0 auto; object-fit: contain; }
.brand strong { display: block; color: var(--blue-950); font-size: 20px; line-height: 1; letter-spacing: .2px; }
.brand span { display: block; color: var(--steel-600); font-size: 12px; text-transform: uppercase; letter-spacing: .7px; margin-top: 4px; }
.menu { display: flex; align-items: center; gap: 16px; font-size: 15px; color: var(--steel-800); }
.menu a { padding: 8px 0; border-bottom: 2px solid transparent; }
.menu a:hover, .menu a.active { color: var(--blue-700); border-color: var(--accent); }
.nav-actions { display: flex; gap: 10px; align-items: center; }
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  min-height: 42px; padding: 11px 18px; border-radius: 6px; border: 1px solid transparent;
  font-weight: 700; font-size: 15px; cursor: pointer; transition: .2s ease;
}
.btn-primary { background: var(--blue-700); color: var(--white); box-shadow: 0 8px 22px rgba(22,91,148,.22); }
.btn-primary:hover { background: var(--blue-800); transform: translateY(-1px); }
.btn-outline { border-color: var(--steel-300); color: var(--blue-900); background: var(--white); }
.btn-outline:hover { border-color: var(--blue-700); color: var(--blue-700); }
.btn-light { background: var(--white); color: var(--blue-900); }

.hero {
  color: var(--white);
  background:
    linear-gradient(90deg, rgba(7,26,47,.96) 0%, rgba(7,26,47,.80) 52%, rgba(7,26,47,.38) 100%),
    repeating-linear-gradient(115deg, rgba(255,255,255,.10) 0 1px, transparent 1px 22px),
    radial-gradient(circle at 80% 20%, rgba(24,160,216,.32), transparent 34%),
    linear-gradient(135deg, #0a1b2f, #174a77 58%, #8b9baa);
  min-height: 650px;
  display: flex; align-items: center;
  position: relative; overflow: hidden;
}
.hero::after {
  content: ""; position: absolute; right: -90px; bottom: 18px; width: min(50vw, 620px); height: 260px;
  border: 32px solid rgba(255,255,255,.18); border-radius: 50%;
  box-shadow: inset 0 0 0 30px rgba(24,160,216,.18), 0 0 0 16px rgba(255,255,255,.06);
}
.hero-content { position: relative; z-index: 1; width: min(760px, 100%); padding: 72px 0 112px; }
.eyebrow { color: var(--accent); font-weight: 800; letter-spacing: 1.5px; text-transform: uppercase; font-size: 13px; }
h1, h2, h3 { color: var(--blue-950); line-height: 1.14; margin: 0 0 16px; }
.hero h1 { color: var(--white); font-size: clamp(42px, 6vw, 74px); letter-spacing: 0; max-width: 800px; }
.hero p { font-size: 20px; color: #dbe9f4; max-width: 660px; margin: 0 0 28px; }
.hero-actions, .cta-row { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; }
.trust-strip { margin-top: -58px; position: relative; z-index: 2; }
.trust-grid { background: var(--white); box-shadow: var(--shadow); border-radius: 8px; display: grid; grid-template-columns: repeat(4, 1fr); overflow: hidden; }
.trust-item { padding: 24px; border-right: 1px solid #e6edf4; }
.trust-item:last-child { border-right: 0; }
.trust-item strong { display: block; color: var(--blue-900); font-size: 22px; }
.trust-item span { color: var(--steel-600); font-size: 14px; }

.home-hero {
  min-height: 690px;
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  color: var(--white);
  padding: 0;
  background: var(--blue-950);
}
.home-hero-bg {
  position: absolute;
  inset: 0;
}
.home-hero-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(3,16,31,.94) 0%, rgba(7,26,47,.80) 44%, rgba(7,26,47,.28) 100%),
    linear-gradient(180deg, rgba(3,16,31,.35) 0%, rgba(3,16,31,.12) 54%, rgba(3,16,31,.62) 100%);
}
.home-hero-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}
.home-hero-content {
  position: relative;
  z-index: 1;
  width: min(1180px, calc(100% - 40px));
  padding: 92px 0 106px;
}
.home-hero h1 {
  color: var(--white);
  font-size: clamp(42px, 5.6vw, 72px);
  max-width: 820px;
  margin-bottom: 20px;
}
.home-hero p {
  color: #d8e7f3;
  font-size: 20px;
  max-width: 760px;
  margin: 0 0 28px;
}
.home-points {
  display: grid;
  grid-template-columns: repeat(4, minmax(130px, 1fr));
  gap: 12px;
  max-width: 780px;
  margin: 0 0 30px;
}
.home-points span {
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 58px;
  padding: 12px;
  border: 1px solid rgba(255,255,255,.18);
  background: rgba(7,26,47,.46);
  backdrop-filter: blur(8px);
  color: #eef8ff;
  border-radius: 8px;
  font-weight: 800;
}
.home-points b {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  flex: 0 0 auto;
  border-radius: 50%;
  background: var(--accent);
  color: var(--white);
  font-size: 12px;
}
.home-products {
  background: var(--white);
  padding-top: 76px;
}
.home-product-track {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}
.home-product-card {
  display: block;
  background: var(--white);
  border: 1px solid #dbe5ef;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 12px 30px rgba(7,26,47,.08);
  transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
}
.home-product-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 18px 42px rgba(7,26,47,.14);
  border-color: rgba(24,160,216,.55);
}
.home-product-image {
  display: block;
  height: 168px;
  background: #132638;
  overflow: hidden;
}
.home-product-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.home-product-card strong {
  display: block;
  padding: 17px 18px;
  color: var(--blue-950);
  font-size: 18px;
}
.seo-link-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
}
.seo-link-row a {
  display: inline-flex;
  align-items: center;
  min-height: 38px;
  padding: 8px 12px;
  border: 1px solid #dbe5ef;
  border-radius: 6px;
  color: var(--blue-800);
  background: var(--white);
  font-weight: 800;
  font-size: 14px;
}
.seo-link-row a:hover {
  border-color: var(--accent);
  color: var(--blue-700);
}
.home-why {
  background:
    linear-gradient(180deg, #f5f8fb, #eef4f9);
}
.advantage-card {
  border-top: 4px solid var(--accent);
}
.home-contact {
  background:
    linear-gradient(90deg, rgba(7,26,47,.96), rgba(13,55,90,.94)),
    repeating-linear-gradient(120deg, rgba(255,255,255,.08) 0 1px, transparent 1px 18px);
  color: #dce8f4;
}
.home-contact h2 {
  color: var(--white);
  font-size: clamp(32px, 4vw, 48px);
}
.home-contact-grid {
  display: grid;
  grid-template-columns: 1.2fr .8fr;
  gap: 42px;
  align-items: center;
}
.contact-panel {
  display: grid;
  gap: 8px;
  margin: 24px 0;
  padding: 24px;
  border: 1px solid rgba(255,255,255,.16);
  border-radius: 8px;
  background: rgba(255,255,255,.06);
}
.contact-panel p {
  margin: 0;
  color: #e8f3fb;
}
.contact-panel strong {
  color: var(--white);
}
.home-qr-panel {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}
.home-qr-panel .qr-card {
  background: var(--white);
  padding: 16px;
}
.home-qr-panel .qr-card img {
  width: 100%;
  aspect-ratio: 1;
  object-fit: contain;
}
.home-bottom-bar {
  background: #03101f;
  color: var(--white);
  border-top: 1px solid rgba(255,255,255,.12);
}
.home-bottom-bar .container {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
}
.home-bottom-bar span {
  min-height: 72px;
  display: grid;
  place-items: center;
  text-align: center;
  font-weight: 900;
  letter-spacing: .4px;
  background: linear-gradient(180deg, #09233d, #05182c);
}

section { padding: 82px 0; }
.section-head { display: flex; justify-content: space-between; gap: 28px; align-items: end; margin-bottom: 34px; }
.section-head h2 { font-size: clamp(30px, 4vw, 46px); max-width: 690px; }
.section-head p { max-width: 460px; margin: 0; color: var(--steel-600); }
.muted { color: var(--steel-600); }
.band { background: var(--steel-100); }
.dark-band { background: var(--blue-950); color: #dce8f4; }
.dark-band h2, .dark-band h3 { color: var(--white); }

.grid { display: grid; gap: 22px; }
.grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.card {
  background: var(--white); border: 1px solid #e4ebf2; border-radius: 8px; padding: 26px;
  box-shadow: 0 10px 28px rgba(7,26,47,.06); min-height: 100%;
}
.card h3 { font-size: 22px; margin-bottom: 10px; }
.card p { margin: 0 0 16px; color: var(--steel-600); }
.card-link { color: var(--blue-700); font-weight: 800; }
.product-list-card img {
  width: 100%;
  height: 180px;
  object-fit: cover;
  border-radius: 6px;
  margin-bottom: 18px;
}
.related-products {
  margin-top: 34px;
  padding-top: 24px;
  border-top: 1px solid #e4ebf2;
}
.icon {
  width: 46px; height: 46px; border-radius: 8px; display: grid; place-items: center;
  background: var(--blue-100); color: var(--blue-700); margin-bottom: 18px; font-weight: 900;
}
.visual-panel {
  min-height: 380px; border-radius: 8px; background:
    linear-gradient(135deg, rgba(22,91,148,.94), rgba(7,26,47,.96)),
    repeating-linear-gradient(90deg, rgba(255,255,255,.16) 0 2px, transparent 2px 38px);
  position: relative; overflow: hidden; box-shadow: var(--shadow);
}
.visual-panel::before, .visual-panel::after {
  content: ""; position: absolute; border-radius: 50%; border: 24px solid rgba(255,255,255,.24);
}
.visual-panel::before { width: 250px; height: 250px; right: 50px; top: 58px; box-shadow: inset 0 0 0 24px rgba(24,160,216,.25); }
.visual-panel::after { width: 150px; height: 150px; left: 44px; bottom: 42px; border-width: 18px; }
.spec-list { display: grid; gap: 12px; margin: 22px 0 0; padding: 0; list-style: none; }
.spec-list li { display: flex; gap: 10px; align-items: flex-start; }
.spec-list li::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: var(--accent); margin-top: 9px; flex: 0 0 auto; }

.page-hero { background: linear-gradient(135deg, var(--blue-950), var(--blue-800)); color: var(--white); padding: 72px 0; }
.page-hero h1 { color: var(--white); font-size: clamp(36px, 5vw, 58px); max-width: 850px; }
.breadcrumbs { color: #bcd2e5; font-size: 14px; margin-bottom: 16px; }
.breadcrumbs a { color: #e7f5ff; }
.article { max-width: 860px; margin: 0 auto; }
.article h2 { margin-top: 36px; font-size: 30px; }
.article p, .article li { color: var(--steel-600); }
.article ul { padding-left: 22px; }

.form {
  display: grid; gap: 14px; background: var(--white); padding: 28px; border-radius: 8px; border: 1px solid #e4ebf2; box-shadow: var(--shadow);
}
.form input, .form textarea, .form select {
  width: 100%; padding: 13px 14px; border: 1px solid var(--steel-300); border-radius: 6px; font: inherit;
}
.form textarea { min-height: 126px; resize: vertical; }
.contact-method { display: flex; gap: 14px; align-items: flex-start; padding: 16px 0; border-bottom: 1px solid #e6edf4; }
.contact-method:last-child { border-bottom: 0; }
.qr-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
.qr-card { border: 1px solid #e4ebf2; border-radius: 8px; padding: 14px; background: var(--white); }
.qr-card img { border-radius: 6px; border: 1px solid #edf2f7; }
.qr-card strong { display: block; margin-top: 10px; color: var(--blue-900); }

.footer { background: var(--blue-950); color: #cbddeb; padding: 56px 0 26px; }
.footer h3, .footer strong { color: var(--white); }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 28px; margin-bottom: 34px; }
.footer a { color: #cbddeb; display: block; margin: 7px 0; }
.copyright { border-top: 1px solid rgba(255,255,255,.12); padding-top: 22px; font-size: 14px; color: #9eb7cc; }

.floating-contact { position: fixed; right: 18px; bottom: 18px; z-index: 80; display: grid; gap: 10px; }
.float-btn {
  width: 54px; height: 54px; border-radius: 50%; display: grid; place-items: center; color: var(--white);
  box-shadow: 0 12px 30px rgba(7,26,47,.24); font-weight: 900; border: 0;
}
.float-whatsapp { background: #25d366; }
.float-wechat { background: #07c160; }
.float-card {
  position: absolute; right: 66px; bottom: 0; width: 210px; background: var(--white); border-radius: 8px;
  box-shadow: var(--shadow); border: 1px solid #e4ebf2; padding: 12px; display: none;
}
.float-item { position: relative; }
.float-item:hover .float-card, .float-item:focus-within .float-card { display: block; }
.float-card strong { color: var(--blue-900); display: block; margin: 6px 0 2px; }
.float-card span { color: var(--steel-600); font-size: 13px; }

@media (max-width: 980px) {
  .menu { display: none; }
  .trust-grid, .grid-4, .grid-3, .footer-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .grid-2 { grid-template-columns: 1fr; }
  .section-head { display: block; }
  .brand { min-width: 0; }
  .brand-logo { width: 150px; }
  .nav-actions { display: none; }
  .home-product-track, .home-points, .home-bottom-bar .container { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .home-contact-grid { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  .container { width: min(100% - 28px, 1180px); }
  .topbar .container { display: block; }
  .nav { align-items: flex-start; }
  .brand { min-width: 0; }
  .brand strong { font-size: 17px; }
  .brand span { font-size: 10px; letter-spacing: .2px; }
  .brand-logo { width: 128px; }
  .nav-actions .btn-outline { display: none; }
  .home-hero { min-height: 700px; }
  .home-hero-content { width: min(100% - 28px, 1180px); padding: 58px 0 80px; }
  .home-hero h1 { font-size: 40px; }
  .home-hero p { font-size: 17px; }
  .home-points, .home-product-track, .home-qr-panel, .home-bottom-bar .container { grid-template-columns: 1fr; }
  .home-product-image { height: 190px; }
  .hero { min-height: 590px; }
  .hero-content { padding: 54px 0 96px; }
  .hero h1 { font-size: 40px; }
  .hero p { font-size: 17px; }
  section { padding: 58px 0; }
  .trust-grid, .grid-4, .grid-3, .footer-grid, .qr-grid { grid-template-columns: 1fr; }
  .trust-item { border-right: 0; border-bottom: 1px solid #e6edf4; }
  .floating-contact { right: 12px; bottom: 12px; }
  .float-card { right: 0; bottom: 64px; }
}