:root {
  --dark: #1f2933;
  --dark2: #111827;
  --blue: #0b5fff;
  --blue-dark: #084ac4;
  --orange: #f97316;
  --gray: #f5f7fa;
  --gray2: #eef2f6;
  --text: #52606d;
  --border: #d9e2ec;
  --white: #ffffff;
  --green: #16a34a;
  --shadow: 0 16px 40px rgba(15, 23, 42, 0.08);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: Inter, Roboto, Arial, sans-serif;
  color: var(--dark);
  background: var(--white);
  line-height: 1.65;
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
}

p {
  color: var(--text);
}

ul {
  padding-left: 20px;
}

.container {
  width: min(1200px, 92%);
  margin: 0 auto;
}

.section {
  padding: 82px 0;
}

.section-sm {
  padding: 56px 0;
}

.gray {
  background: var(--gray);
}

.center {
  text-align: center;
}

.eyebrow {
  display: inline-block;
  color: var(--blue);
  font-weight: 800;
  font-size: 13px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 10px;
}

h1,
h2,
h3 {
  color: var(--dark2);
  line-height: 1.18;
  margin-top: 0;
}

h1 {
  font-size: clamp(36px, 5vw, 58px);
  margin-bottom: 22px;
}

h2 {
  font-size: clamp(28px, 3.2vw, 40px);
  margin-bottom: 18px;
}

h3 {
  font-size: 22px;
  margin-bottom: 12px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 13px 22px;
  border-radius: 8px;
  font-weight: 800;
  transition: 0.25s ease;
  border: 1px solid transparent;
  cursor: pointer;
}

.btn-primary {
  background: var(--blue);
  color: var(--white);
}

.btn-primary:hover {
  background: var(--blue-dark);
  transform: translateY(-2px);
}

.btn-secondary {
  background: var(--white);
  border-color: var(--border);
  color: var(--dark);
}

.btn-secondary:hover {
  border-color: var(--blue);
  color: var(--blue);
}

.btn-orange {
  background: var(--orange);
  color: var(--white);
}

.btn-row {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-top: 28px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 999;
  background: rgba(255,255,255,0.96);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  font-size: 23px;
  font-weight: 900;
  color: var(--dark2);
  letter-spacing: -0.02em;
}

.logo span {
  color: var(--blue);
}

.main-nav {
  display: flex;
  gap: 24px;
  align-items: center;
}

.main-nav a {
  font-size: 15px;
  font-weight: 700;
  color: var(--dark);
}

.main-nav a:hover {
  color: var(--blue);
}

.header-actions {
  display: flex;
  gap: 12px;
  align-items: center;
}

.mobile-menu-btn {
  display: none;
  border: 0;
  background: transparent;
  font-size: 28px;
  cursor: pointer;
}

.hero {
  padding: 92px 0;
  background:
    linear-gradient(110deg, rgba(245,247,250,0.94) 0%, rgba(255,255,255,0.88) 52%, rgba(255,255,255,0.55) 100%),
    url("/assets/images/hero-small-concrete-batch-plant.webp") center right / cover no-repeat;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  align-items: center;
  gap: 42px;
}

.hero-card {
  background: rgba(255,255,255,0.86);
  border: 1px solid rgba(217,226,236,0.8);
  border-radius: 18px;
  padding: 42px;
  box-shadow: var(--shadow);
}

.hero p {
  font-size: 18px;
  max-width: 720px;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  margin-top: 30px;
  gap: 16px;
}

.stat {
  background: var(--white);
  border: 1px solid var(--border);
  padding: 16px;
  border-radius: 12px;
}

.stat strong {
  font-size: 22px;
  color: var(--blue);
}

.page-hero {
  padding: 78px 0;
  background: linear-gradient(135deg, #111827 0%, #1f2933 62%, #0b5fff 100%);
  color: var(--white);
}

.page-hero h1,
.page-hero p {
  color: var(--white);
}

.page-hero p {
  max-width: 780px;
  opacity: 0.9;
  font-size: 18px;
}

.breadcrumb {
  font-size: 14px;
  color: rgba(255,255,255,0.75);
  margin-bottom: 16px;
}

.breadcrumb a {
  color: rgba(255,255,255,0.85);
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 34px;
  align-items: center;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
}

.card,
.product-card,
.case-card,
.news-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 26px;
  box-shadow: 0 6px 22px rgba(15,23,42,0.04);
}

.card:hover,
.product-card:hover,
.news-card:hover {
  box-shadow: var(--shadow);
}

.product-card img {
  border-radius: 12px;
  margin-bottom: 18px;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.product-card .meta {
  color: var(--blue);
  font-weight: 800;
  font-size: 14px;
}

.product-card a.more,
.news-card a.more {
  color: var(--blue);
  font-weight: 800;
}

.spec-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--white);
  border-radius: 14px;
  overflow: hidden;
  box-shadow: 0 6px 20px rgba(15,23,42,0.04);
}

.spec-table th {
  background: var(--dark2);
  color: var(--white);
}

.spec-table th,
.spec-table td {
  border: 1px solid var(--border);
  padding: 14px 16px;
  text-align: left;
}

.check-list {
  list-style: none;
  padding-left: 0;
}

.check-list li {
  position: relative;
  padding-left: 30px;
  margin-bottom: 12px;
  color: var(--text);
}

.check-list li::before {
  content: "✓";
  position: absolute;
  left: 0;
  top: 0;
  color: var(--green);
  font-weight: 900;
}

.faq-item {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 14px;
  margin-bottom: 14px;
  padding: 22px;
}

.faq-item h3 {
  font-size: 18px;
  margin-bottom: 8px;
}

.cta-band {
  background: linear-gradient(135deg, var(--blue), #003b9a);
  color: var(--white);
  border-radius: 20px;
  padding: 46px;
  display: flex;
  justify-content: space-between;
  gap: 24px;
  align-items: center;
}

.cta-band h2,
.cta-band p {
  color: var(--white);
}

.form {
  background: var(--white);
  border: 1px solid var(--border);
  padding: 28px;
  border-radius: 18px;
  box-shadow: var(--shadow);
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.form label {
  display: block;
  font-weight: 800;
  margin-bottom: 6px;
}

.form input,
.form textarea,
.form select {
  width: 100%;
  padding: 13px 14px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font: inherit;
}

.form textarea {
  min-height: 140px;
}

.form .full {
  grid-column: 1 / -1;
}

.contact-box {
  background: var(--dark2);
  color: var(--white);
  padding: 28px;
  border-radius: 18px;
}

.contact-box h2,
.contact-box h3 {
  color: var(--white);
}

.contact-box p,
.contact-box a {
  color: rgba(255,255,255,0.88);
}

.article {
  max-width: 900px;
  margin: 0 auto;
}

.article p,
.article li {
  font-size: 17px;
}

.article .toc {
  background: var(--gray);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 22px;
  margin-bottom: 34px;
}

.download-card {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  align-items: center;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 22px;
  margin-bottom: 16px;
}

.site-footer {
  background: var(--dark2);
  color: var(--white);
  padding: 64px 0 20px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.3fr;
  gap: 28px;
}

.site-footer h3 {
  color: var(--white);
  font-size: 18px;
}

.site-footer p,
.site-footer a,
.site-footer li {
  color: rgba(255,255,255,0.78);
}

.site-footer ul {
  list-style: none;
  padding-left: 0;
}

.site-footer li {
  margin-bottom: 8px;
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.12);
  text-align: center;
  margin-top: 42px;
  padding-top: 18px;
}

.float-whatsapp {
  position: fixed;
  right: 20px;
  bottom: 20px;
  background: #25d366;
  color: var(--white);
  padding: 13px 18px;
  border-radius: 999px;
  font-weight: 900;
  box-shadow: var(--shadow);
  z-index: 999;
}

@media (max-width: 992px) {
  .grid-2,
  .grid-3,
  .grid-4,
  .hero-grid,
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }

  .hero-grid,
  .grid-2 {
    grid-template-columns: 1fr;
  }

  .cta-band {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 768px) {
  .header-actions .btn {
    display: none;
  }

  .mobile-menu-btn {
    display: block;
  }

  .main-nav {
    position: absolute;
    top: 76px;
    left: 0;
    right: 0;
    background: var(--white);
    border-bottom: 1px solid var(--border);
    padding: 22px;
    flex-direction: column;
    align-items: flex-start;
    display: none;
  }

  .main-nav.active {
    display: flex;
  }

  .hero {
    padding: 58px 0;
  }

  .hero-card {
    padding: 28px;
  }

  .hero-stats,
  .grid-3,
  .grid-4,
  .footer-grid,
  .form-grid {
    grid-template-columns: 1fr;
  }

  .section {
    padding: 58px 0;
  }

  .download-card {
    flex-direction: column;
    align-items: flex-start;
  }
}