:root {
  --bg: #eef2f5;
  --surface: #ffffff;
  --surface-2: #f7fafc;
  --ink: #102230;
  --muted: #5d7384;
  --brand: #e05e2f;
  --brand-deep: #b7461e;
  --accent: #0f766e;
  --border: #d9e3ea;
  --shadow: 0 18px 40px rgba(16, 34, 48, 0.11);
  --radius-lg: 22px;
  --radius-md: 14px;
  --radius-sm: 10px;
  --container: 1160px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: 'Manrope', sans-serif;
  color: var(--ink);
  background: radial-gradient(circle at 0% 0%, #f8fbff 0%, var(--bg) 45%, #eaf1f6 100%);
  line-height: 1.65;
}

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

img {
  display: block;
  width: 100%;
  height: auto;
}

.container {
  width: min(var(--container), calc(100% - 2.5rem));
  margin: 0 auto;
}

.skip-link {
  position: absolute;
  left: 8px;
  top: -40px;
  z-index: 1000;
  background: var(--ink);
  color: #fff;
  padding: 0.55rem 0.9rem;
  border-radius: 8px;
}

.skip-link:focus {
  top: 8px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(10px);
  background: rgba(255, 255, 255, 0.86);
  border-bottom: 1px solid rgba(217, 227, 234, 0.6);
}

.site-header.is-scrolled {
  box-shadow: 0 8px 22px rgba(16, 34, 48, 0.08);
}

.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 110px;
  gap: 1rem;
}

.brand {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.45rem;
}

.brand img {
  width: 340px;
  max-width: 100%;
}

.brand-text {
  font-size: 1.6rem;
  font-weight: 600;
  color: var(--muted);
  letter-spacing: 0.02em;
  line-height: 1;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.1rem;
}

.nav-links a {
  font-size: 0.96rem;
  font-weight: 700;
  color: #264052;
  padding: 0.4rem 0.55rem;
  border-radius: 8px;
  transition: color 0.2s ease, background 0.2s ease;
}

.nav-links a:hover,
.nav-links a:focus-visible,
.nav-links a.active {
  color: var(--brand-deep);
  background: #fff2ed;
}

.menu-button {
  border: 1px solid var(--border);
  background: #fff;
  border-radius: 10px;
  width: 42px;
  height: 42px;
  display: none;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}

.menu-button span,
.menu-button span::before,
.menu-button span::after {
  content: '';
  display: block;
  width: 18px;
  height: 2px;
  background: #173346;
  border-radius: 2px;
  position: relative;
  transition: transform 0.2s ease;
}

.menu-button span::before {
  position: absolute;
  top: -6px;
}

.menu-button span::after {
  position: absolute;
  top: 6px;
}

.mobile-nav {
  display: none;
  border-top: 1px solid var(--border);
  background: #fff;
}

.mobile-nav a {
  display: block;
  padding: 0.85rem 1.25rem;
  border-bottom: 1px solid #edf2f6;
  font-weight: 700;
  color: #233d4f;
}

.mobile-nav.open {
  display: block;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  border-radius: 999px;
  padding: 0.78rem 1.35rem;
  font-size: 0.96rem;
  font-weight: 800;
  letter-spacing: 0.01em;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
  border: none;
  cursor: pointer;
}

.btn:hover,
.btn:focus-visible {
  transform: translateY(-1px);
}

.btn-primary {
  background: linear-gradient(125deg, var(--brand), #f07c2b);
  color: #fff;
  box-shadow: 0 10px 20px rgba(224, 94, 47, 0.32);
}

.btn-primary:hover,
.btn-primary:focus-visible {
  box-shadow: 0 14px 24px rgba(224, 94, 47, 0.38);
}

.btn-ghost {
  border: 1px solid #e0e8ef;
  background: #fff;
  color: #163347;
}

.hero {
  padding: 3.4rem 0 2.8rem;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 2.2rem;
  align-items: center;
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 0.8rem;
  border-radius: 999px;
  border: 1px solid #cce7e4;
  background: #eefaf8;
  color: #0a655d;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

.tag::before {
  content: '';
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #18a394;
}

h1,
h2,
h3 {
  margin: 0;
  line-height: 1.12;
  font-family: 'Space Grotesk', sans-serif;
}

.hero h1 {
  font-size: clamp(2rem, 4.2vw, 3.4rem);
  margin-top: 1rem;
}

.hero h1 span {
  color: var(--brand-deep);
}

.hero p {
  color: #3e5566;
  margin: 1.2rem 0 1.7rem;
  max-width: 58ch;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
}

.hero-media {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow);
  position: relative;
}

.hero-media::after {
  content: 'Trusted Fly Ash Supply Across India and Export Markets';
  position: absolute;
  left: 1rem;
  bottom: 1rem;
  right: 1rem;
  background: rgba(16, 34, 48, 0.78);
  color: #fff;
  font-size: 0.9rem;
  font-weight: 700;
  padding: 0.6rem 0.75rem;
  border-radius: 10px;
}

.stats {
  margin-top: 1.6rem;
  display: grid;
  grid-template-columns: repeat(4, minmax(120px, 1fr));
  gap: 0.8rem;
}

.stat {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0.85rem;
}

.stat strong {
  display: block;
  font-size: 1.15rem;
}

.stat span {
  color: var(--muted);
  font-size: 0.88rem;
}

.section {
  padding: 2.4rem 0;
}

.section-alt {
  background: linear-gradient(180deg, #f8fbfe 0%, #edf3f8 100%);
  border-top: 1px solid #dbe7f0;
  border-bottom: 1px solid #dbe7f0;
}

.section-head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1.4rem;
}

.section-head p {
  margin: 0;
  max-width: 62ch;
  color: #4a6273;
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.2rem;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.2rem;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 1.2rem;
  box-shadow: 0 5px 16px rgba(22, 50, 71, 0.05);
}

.card h3 {
  font-size: 1.15rem;
  margin-bottom: 0.45rem;
}

.card p {
  margin: 0;
  color: #4e6678;
}

.checklist {
  margin: 1rem 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.55rem;
}

.checklist li {
  padding-left: 1.3rem;
  position: relative;
  color: #395265;
}

.checklist li::before {
  content: '';
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--brand);
  position: absolute;
  left: 0;
  top: 0.52rem;
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.2rem;
}

.product-card {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  background: #fff;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  overflow: hidden;
}

.product-card img {
  height: 100%;
  min-height: 220px;
  object-fit: cover;
}

.product-body {
  padding: 1rem;
}

.product-body h3 {
  font-size: 1.17rem;
  margin-bottom: 0.3rem;
}

.product-body p {
  margin: 0;
  color: #446173;
}

.pills {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin: 0.75rem 0;
}

.pill {
  display: inline-block;
  font-size: 0.74rem;
  font-weight: 800;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  border-radius: 999px;
  padding: 0.28rem 0.58rem;
  background: #fff1ec;
  color: #b7471f;
}

.spec-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
}

.spec-table th,
.spec-table td {
  border: 1px solid #d3e0ea;
  padding: 0.56rem 0.62rem;
  text-align: left;
}

.spec-table th {
  background: #f2f7fb;
  font-size: 0.86rem;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

.page-hero {
  padding: 2.4rem 0 1.4rem;
}

.page-hero h1 {
  font-size: clamp(1.7rem, 4vw, 2.65rem);
}

.page-hero p {
  margin: 0.8rem 0 0;
  max-width: 72ch;
  color: #4f6575;
}

.media-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.media-card img {
  max-height: 520px;
  object-fit: contain;
  background: #fff;
}

.form-wrap {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 1.2rem;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.9rem;
}

.form-group {
  display: grid;
  gap: 0.35rem;
}

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

label {
  font-size: 0.9rem;
  font-weight: 700;
  color: #294154;
}

input,
textarea,
select {
  font: inherit;
  width: 100%;
  border: 1px solid #c9d8e4;
  border-radius: 10px;
  padding: 0.65rem 0.72rem;
  background: #fcfeff;
  color: #122838;
}

input:focus,
textarea:focus,
select:focus {
  outline: 2px solid #9ed0f0;
  border-color: #72b5df;
}

textarea {
  resize: vertical;
  min-height: 130px;
}

.notice {
  font-size: 0.88rem;
  color: #5b7384;
}

.cta-band {
  background: linear-gradient(140deg, #173244 0%, #1e445c 55%, #245d76 100%);
  color: #ecf5fb;
  border-radius: var(--radius-lg);
  padding: 1.6rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.cta-band p {
  margin: 0.5rem 0 0;
  color: rgba(236, 245, 251, 0.87);
}

.image-credit-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.65rem;
}

.image-credit-list a {
  color: #0c5f95;
  text-decoration: underline;
}

.site-footer {
  margin-top: 2.4rem;
  border-top: 1px solid #cfdce6;
  background: #f5f8fb;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr 1fr;
  gap: 1.3rem;
  padding: 1.45rem 0;
}

.footer-grid h3 {
  font-size: 1rem;
  margin-bottom: 0.45rem;
}

.footer-grid p,
.footer-grid li {
  margin: 0;
  color: #435d70;
}

.footer-links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.35rem;
}

.footer-bottom {
  border-top: 1px solid #dbe6ee;
  padding: 0.85rem 0 1.4rem;
  font-size: 0.9rem;
  color: #567082;
}

.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 1030px) {
  .hero-grid,
  .grid-3,
  .product-grid,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .product-card {
    grid-template-columns: 1fr;
  }

  .product-card img {
    min-height: 210px;
    max-height: 280px;
  }

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

  .stats {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 860px) {
  .nav-links {
    display: none;
  }

  .menu-button {
    display: inline-flex;
  }

  .container {
    width: min(var(--container), calc(100% - 1.45rem));
  }

  .hero {
    padding-top: 2.1rem;
  }
}

@media (max-width: 560px) {
  .brand img {
    width: 250px;
  }

  .brand-text {
    font-size: 1.15rem;
  }

  .hero-media::after {
    position: static;
    margin: 0.85rem;
  }

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