:root {
  --blue: #1B6FBF;
  --blue-dark: #12507F;
  --blue-darker: #0D3A5F;
  --green: #4CAF50;
  --green-dark: #2E7D32;
  --orange: #E94E1B;
  --text: #33475b;
  --heading: #17324D;
  --bg-light: #F4F8FC;
  --border: #E1EAF3;
  --radius: 10px;
  --shadow: 0 6px 24px rgba(13, 58, 95, .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(--text);
  line-height: 1.7;
  background: #fff;
}
img { max-width: 100%; display: block; }
a { color: var(--blue); text-decoration: none; }
h1, h2, h3, h4 { color: var(--heading); line-height: 1.3; }
.container { max-width: 1180px; margin: 0 auto; padding: 0 20px; }

/* ===== Top bar ===== */
.topbar {
  background: var(--blue-darker);
  color: #cfe3f5;
  font-size: 14px;
  padding: 8px 0;
}
.topbar .container { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 6px; }
.topbar a { color: #fff; }
.topbar .tb-links { display: flex; gap: 18px; align-items: center; }
.topbar .tb-item { display: inline-flex; align-items: center; gap: 6px; }
.topbar svg { flex-shrink: 0; }

/* ===== Header ===== */
.site-header {
  background: #fff;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 12px rgba(13, 58, 95, .08);
}
.site-header .container { display: flex; align-items: center; justify-content: space-between; padding: 10px 20px; }
.logo img { height: 58px; width: auto; }
.main-nav ul { list-style: none; display: flex; gap: 6px; align-items: center; }
.main-nav a {
  display: block;
  padding: 12px 16px;
  color: var(--heading);
  font-weight: 600;
  font-size: 15.5px;
  border-radius: 6px;
  transition: all .2s;
}
.main-nav a:hover, .main-nav a.active { color: var(--blue); background: var(--bg-light); }
.nav-toggle { display: none; background: none; border: 2px solid var(--blue); color: var(--blue); font-size: 22px; padding: 4px 12px; border-radius: 6px; cursor: pointer; }

/* ===== Hero ===== */
.hero {
  background: linear-gradient(120deg, var(--blue-darker) 0%, var(--blue) 55%, var(--green-dark) 130%);
  color: #fff;
  padding: 90px 0 100px;
  position: relative;
  overflow: hidden;
}
.hero::after {
  content: "";
  position: absolute;
  right: -140px; top: -140px;
  width: 480px; height: 480px;
  border-radius: 50%;
  background: rgba(255,255,255,.06);
}
.hero::before {
  content: "";
  position: absolute;
  right: 60px; bottom: -180px;
  width: 340px; height: 340px;
  border-radius: 50%;
  background: rgba(255,255,255,.05);
}
.hero .container { position: relative; z-index: 2; max-width: 820px; }
.hero .eyebrow { color: #A5E1A8; font-weight: 700; letter-spacing: 2px; text-transform: uppercase; font-size: 14px; margin-bottom: 14px; }
.hero h1 { color: #fff; font-size: 44px; margin-bottom: 18px; }
.hero p { font-size: 18px; color: #DDEBF7; margin-bottom: 30px; }
.btn {
  display: inline-block;
  padding: 13px 30px;
  border-radius: 50px;
  font-weight: 700;
  font-size: 15.5px;
  transition: all .2s;
}
.btn-primary { background: var(--green); color: #fff; }
.btn-primary:hover { background: var(--green-dark); transform: translateY(-2px); }
.btn-outline { border: 2px solid rgba(255,255,255,.7); color: #fff; margin-left: 12px; }
.btn-outline:hover { background: rgba(255,255,255,.12); }
.btn-blue { background: var(--blue); color: #fff; }
.btn-blue:hover { background: var(--blue-dark); }

/* ===== Trust strip ===== */
.trust-strip { background: #fff; margin-top: -50px; position: relative; z-index: 5; }
.trust-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.trust-item {
  background: #fff;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 22px 18px;
  display: flex;
  gap: 14px;
  align-items: flex-start;
}
.trust-item .t-icon {
  width: 46px; height: 46px; border-radius: 12px;
  background: var(--bg-light);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.trust-item h4 { font-size: 15.5px; margin-bottom: 2px; }
.trust-item p { font-size: 13.5px; color: #6b7f93; line-height: 1.5; }

/* ===== Sections ===== */
section.section { padding: 78px 0; }
section.section.alt { background: var(--bg-light); }
.section-head { text-align: center; max-width: 720px; margin: 0 auto 46px; }
.section-head .kicker { color: var(--green-dark); font-weight: 700; text-transform: uppercase; letter-spacing: 2px; font-size: 13px; }
.section-head h2 { font-size: 32px; margin: 8px 0 14px; }
.section-head p { color: #62788d; }

/* Category cards */
.cat-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.cat-grid.three { grid-template-columns: repeat(3, 1fr); }
.cat-card {
  background: #fff;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: all .25s;
  display: flex; flex-direction: column;
}
.cat-card:hover { transform: translateY(-6px); box-shadow: 0 14px 34px rgba(13,58,95,.14); }
.cat-card img { width: 100%; aspect-ratio: 4/3; object-fit: cover; }
.cat-card .cat-body { padding: 18px 20px 22px; flex: 1; display: flex; flex-direction: column; }
.cat-card h3 { font-size: 17.5px; margin-bottom: 6px; }
.cat-card p { font-size: 14px; color: #6b7f93; flex: 1; }
.cat-card .view { margin-top: 14px; font-weight: 700; color: var(--blue); font-size: 14.5px; }
.cat-card .view:hover { color: var(--green-dark); }
.cat-tag { display: inline-block; font-size: 11.5px; font-weight: 700; padding: 2px 10px; border-radius: 20px; margin-bottom: 8px; }
.cat-tag.bag { background: #E3F1FD; color: var(--blue); }
.cat-tag.tape { background: #E6F4E7; color: var(--green-dark); }

/* About block */
.about-grid { display: grid; grid-template-columns: 1.05fr .95fr; gap: 50px; align-items: center; }
.about-visual { position: relative; }
.about-visual .av-main {
  border-radius: var(--radius);
  background: linear-gradient(135deg, var(--blue) 0%, var(--blue-dark) 60%, var(--green-dark) 140%);
  padding: 40px 34px;
  color: #fff;
}
.about-visual .av-main .logo-img { background: #fff; border-radius: 8px; padding: 14px 18px; width: 100%; margin-bottom: 22px; }
.about-visual .av-main h3 { color: #fff; font-size: 22px; margin-bottom: 10px; }
.about-visual .av-main p { color: #D8E9F8; font-size: 15px; }
.badge-float {
  position: absolute; right: -14px; bottom: -22px;
  background: var(--green);
  color: #fff; border-radius: var(--radius);
  padding: 18px 22px;
  box-shadow: var(--shadow);
  text-align: center;
}
.badge-float strong { display: block; font-size: 26px; }
.badge-float span { font-size: 13px; }
.checklist { list-style: none; margin: 18px 0 26px; }
.checklist li { padding-left: 32px; position: relative; margin-bottom: 12px; color: #42566b; }
.checklist li::before {
  content: "✓";
  position: absolute; left: 0; top: 1px;
  width: 21px; height: 21px;
  background: var(--green);
  color: #fff; border-radius: 50%;
  font-size: 13px; font-weight: 700;
  display: flex; align-items: center; justify-content: center;
}

/* Stats */
.stats-band { background: var(--blue-darker); color: #fff; padding: 56px 0; }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; text-align: center; }
.stat strong { font-size: 40px; color: #7FD482; display: block; }
.stat span { color: #B9D4EC; font-size: 15px; }

/* Why us */
.why-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.why-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 26px;
  transition: all .2s;
}
.why-card:hover { border-color: var(--blue); box-shadow: var(--shadow); }
.why-card .w-icon {
  width: 52px; height: 52px; border-radius: 14px;
  background: linear-gradient(135deg, var(--blue), var(--green));
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 16px;
}
.why-card h3 { font-size: 18px; margin-bottom: 8px; }
.why-card p { font-size: 14.5px; color: #6b7f93; }

/* CTA band */
.cta-band {
  background: linear-gradient(120deg, var(--green-dark), var(--blue));
  color: #fff;
  padding: 60px 0;
  text-align: center;
}
.cta-band h2 { color: #fff; font-size: 30px; margin-bottom: 12px; }
.cta-band p { color: #E2F1E3; margin-bottom: 26px; }

/* Page banner */
.page-banner {
  background: linear-gradient(120deg, var(--blue-darker), var(--blue) 70%, var(--green-dark) 140%);
  color: #fff;
  padding: 64px 0;
  text-align: center;
}
.page-banner h1 { color: #fff; font-size: 36px; margin-bottom: 8px; }
.page-banner p { color: #CDE2F5; }
.breadcrumb { font-size: 14px; color: #A9C9E8; margin-top: 8px; }
.breadcrumb a { color: #fff; }

/* Products page */
.prod-group-title { display: flex; align-items: center; gap: 14px; margin: 60px 0 8px; }
.prod-group-title .pill { background: var(--blue); color: #fff; font-size: 13px; font-weight: 700; padding: 4px 14px; border-radius: 20px; }
.prod-group-title.tape .pill { background: var(--green-dark); }
.prod-group-title h2 { font-size: 26px; }

/* Contact page */
.contact-grid { display: grid; grid-template-columns: .9fr 1.1fr; gap: 46px; }
.contact-info-card {
  background: var(--bg-light);
  border-radius: var(--radius);
  padding: 30px 28px;
  margin-bottom: 20px;
}
.contact-info-card h3 { font-size: 17px; margin-bottom: 8px; display: flex; align-items: center; gap: 10px; }
.contact-info-card p, .contact-info-card a { color: #42566b; font-size: 15px; }
.contact-form {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 34px 32px;
  box-shadow: var(--shadow);
}
.contact-form h3 { font-size: 22px; margin-bottom: 20px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-group { margin-bottom: 16px; }
.form-group label { display: block; font-size: 14px; font-weight: 600; color: var(--heading); margin-bottom: 6px; }
.form-group input, .form-group textarea, .form-group select {
  width: 100%;
  padding: 11px 14px;
  border: 1px solid #CBD9E6;
  border-radius: 8px;
  font-size: 15px;
  font-family: inherit;
  color: var(--text);
  background: #FBFDFE;
}
.form-group input:focus, .form-group textarea:focus { outline: none; border-color: var(--blue); box-shadow: 0 0 0 3px rgba(27,111,191,.12); }
.form-note { font-size: 13px; color: #8598ab; margin-top: 10px; }

/* Footer */
.site-footer { background: var(--blue-darker); color: #AFC9E1; padding: 60px 0 0; font-size: 14.5px; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.2fr; gap: 40px; padding-bottom: 40px; }
.site-footer h4 { color: #fff; font-size: 16px; margin-bottom: 16px; }
.site-footer ul { list-style: none; }
.site-footer li { margin-bottom: 9px; }
.site-footer a { color: #AFC9E1; }
.site-footer a:hover { color: #fff; }
.footer-logo { background: #fff; border-radius: 8px; padding: 10px 14px; width: 250px; margin-bottom: 16px; }
.footer-contact li { display: flex; gap: 10px; align-items: flex-start; }
.footer-contact svg { flex-shrink: 0; margin-top: 4px; }
.copyright { border-top: 1px solid rgba(255,255,255,.12); padding: 18px 0; text-align: center; font-size: 13.5px; color: #7FA0BF; }

/* WhatsApp float */
.wa-float {
  position: fixed;
  right: 24px; bottom: 24px;
  z-index: 200;
  display: flex; align-items: center; gap: 10px;
  background: #25D366;
  color: #fff;
  padding: 12px 20px 12px 16px;
  border-radius: 50px;
  font-weight: 700;
  font-size: 15px;
  box-shadow: 0 8px 24px rgba(37,211,102,.45);
  transition: transform .2s;
}
.wa-float:hover { transform: translateY(-3px); color: #fff; }

/* Responsive */
@media (max-width: 980px) {
  .trust-grid, .cat-grid, .stats-grid, .why-grid { grid-template-columns: repeat(2, 1fr); }
  .cat-grid.three { grid-template-columns: repeat(2, 1fr); }
  .about-grid, .contact-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .hero h1 { font-size: 34px; }
}
@media (max-width: 640px) {
  .trust-grid, .cat-grid, .cat-grid.three, .why-grid, .footer-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .nav-toggle { display: block; }
  .main-nav { position: absolute; top: 100%; left: 0; right: 0; background: #fff; box-shadow: 0 12px 24px rgba(13,58,95,.12); display: none; }
  .main-nav.open { display: block; }
  .main-nav ul { flex-direction: column; padding: 10px 16px; align-items: stretch; }
  .logo img { height: 44px; }
  .hero { padding: 60px 0 76px; }
  .hero h1 { font-size: 28px; }
  .section-head h2 { font-size: 26px; }
  .btn-outline { margin-left: 0; margin-top: 10px; }
}