:root {
  --bg: #f3f7fb;
  --bg-strong: #ebf3ff;
  --panel: #ffffff;
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --primary-soft: #dbeafe;
  --secondary: #0f172a;
  --secondary-soft: #1e293b;
  --accent: #f59e0b;
  --text: #1f2937;
  --muted: #5b6475;
  --line: #e2e8f0;
  --success: #10b981;
  --shadow-lg: 0 24px 60px rgba(15, 23, 42, 0.12);
  --shadow-md: 0 16px 35px rgba(37, 99, 235, 0.12);
  --radius-xl: 28px;
  --radius-lg: 20px;
  --radius-md: 14px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  background:
    radial-gradient(circle at top left, rgba(147, 197, 253, 0.18), transparent 28%),
    linear-gradient(180deg, #f8fbff 0%, var(--bg) 100%);
  color: var(--text);
  line-height: 1.7;
}

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

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

.container {
  width: min(1160px, calc(100% - 2rem));
  margin: 0 auto;
}

.topbar {
  background: linear-gradient(90deg, #101827 0%, #1f2937 100%);
  height: 6px;
  min-height: 6px;
  padding: 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.topbar .container {
  display: none;
}

.navbar {
  background: rgba(255, 255, 255, 0.9);
  border-bottom: 1px solid rgba(148, 163, 184, 0.18);
  backdrop-filter: blur(10px);
  position: sticky;
  top: 0;
  z-index: 30;
}

.navbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 0;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  font-weight: 800;
  font-size: 1.2rem;
  color: var(--secondary);
}

.brand-mark {
  width: 42px;
  height: 42px;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--primary) 0%, #60a5fa 100%);
  color: white;
  display: grid;
  place-items: center;
  font-size: 1.1rem;
  box-shadow: var(--shadow-md);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.nav-links a {
  color: var(--secondary);
  font-weight: 600;
  padding: 0.7rem 0.95rem;
  border-radius: 999px;
  transition: all 0.2s ease;
}

.nav-links a:hover,
.nav-links a.active {
  background: var(--primary-soft);
  color: var(--primary);
}

.hero {
  background: linear-gradient(135deg, #eef5ff 0%, #dfeeff 35%, #f6f9ff 100%);
  padding: 4.5rem 0 3.5rem;
}

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

.hero-copy h1 {
  font-size: clamp(2.5rem, 4vw, 4.2rem);
  line-height: 1.05;
  margin: 0 0 1rem;
  color: var(--secondary);
  letter-spacing: -0.05em;
}

.hero-copy p {
  font-size: 1.08rem;
  color: var(--muted);
  margin-bottom: 1.8rem;
  max-width: 620px;
}

.button-row {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.95rem 1.5rem;
  border-radius: 12px;
  font-weight: 700;
  border: none;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: white;
  box-shadow: var(--shadow-md);
}

.btn-primary:hover {
  background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.9);
  color: var(--secondary);
  border: 1px solid rgba(148, 163, 184, 0.35);
}

.hero-panel {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.7), rgba(255, 255, 255, 0.9));
  border: 1px solid rgba(148, 163, 184, 0.22);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  padding: 1.1rem;
}

.hero-box {
  background: linear-gradient(180deg, #edf5ff 0%, #ffffff 100%);
  border-radius: calc(var(--radius-xl) - 8px);
  padding: 1.5rem;
  border: 1px solid rgba(96, 165, 250, 0.2);
}

.hero-box .mini-label {
  color: var(--primary);
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.72rem;
}

.hero-box h3 {
  margin: 0.6rem 0 1.1rem;
  color: var(--secondary);
  font-size: 1.6rem;
}

.product-preview {
  margin-top: 1.4rem;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.9rem;
}

.product-mini {
  background: linear-gradient(180deg, #ffffff 0%, #f8fbff 100%);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 1rem;
  box-shadow: 0 8px 18px rgba(15, 23, 42, 0.04);
}

.product-mini strong {
  display: block;
  margin-bottom: 0.35rem;
  color: var(--secondary);
  font-size: 0.98rem;
}

.product-mini span {
  display: block;
  color: var(--muted);
  font-size: 0.88rem;
  line-height: 1.5;
}

.section {
  padding: 1rem 0;
}

.section h2 {
  font-size: clamp(2rem, 3vw, 2.8rem);
  margin: 0 0 0.8rem;
  color: var(--secondary);
  text-align: center;
  letter-spacing: -0.04em;
}

.section-intro {
  text-align: center;
  color: var(--muted);
  max-width: 760px;
  margin: 0 auto 2.5rem;
  font-size: 1.04rem;
}

.feature-grid,
.category-grid,
.product-grid,
.stats-grid,
.info-grid {
  display: grid;
  gap: 1.5rem;
}

.feature-grid,
.category-grid,
.product-grid,
.info-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.stats-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.card,
.stat,
.category-card,
.contact-card,
.form-card,
.policy-card {
  transition: transform 0.22s ease, box-shadow 0.22s ease;
}

.card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 1.7rem;
  box-shadow: 0 12px 28px rgba(15, 23, 42, 0.04);
}

.card:hover,
.stat:hover,
.category-card:hover,
.contact-card:hover,
.form-card:hover,
.policy-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 20px 38px rgba(15, 23, 42, 0.08);
}

.card h3 {
  margin-top: 0.9rem;
  margin-bottom: 0.55rem;
  color: var(--secondary);
  font-size: 1.35rem;
}

.card p,
.policy-card p,
.contact-card p,
.form-card p {
  color: var(--muted);
}

.icon-box {
  width: 58px;
  height: 58px;
  border-radius: 16px;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, var(--primary-soft), #d9f99d);
  color: var(--primary);
  font-size: 1.5rem;
  font-weight: 800;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.6);
}

.stat {
  text-align: center;
  padding: 1.8rem 1rem;
  background: white;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: 0 10px 24px rgba(15, 23, 42, 0.04);
}

.stat strong {
  display: block;
  font-size: clamp(1.8rem, 2vw, 2.2rem);
  color: var(--primary);
  line-height: 1.1;
  margin-bottom: 0.4rem;
}

.stat span {
  color: var(--muted);
}

.category-card {
  position: relative;
  overflow: hidden;
  min-height: 260px;
  display: flex;
  align-items: end;
  background: linear-gradient(135deg, #dbeafe, #fef3c7);
  border: 1px solid rgba(148, 163, 184, 0.2);
  border-radius: var(--radius-lg);
  box-shadow: 0 12px 30px rgba(15, 23, 42, 0.04);
}

.category-card:nth-child(2n) {
  background: linear-gradient(135deg, #dcfce7, #dbeafe);
}

.category-card:nth-child(3n) {
  background: linear-gradient(135deg, #fef3c7, #fde68a);
}

.category-card .content {
  position: relative;
  z-index: 1;
  padding: 1.5rem;
}

.category-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0) 10%, rgba(15, 23, 42, 0.18) 100%);
}

.category-card h3,
.category-card p {
  position: relative;
  z-index: 1;
  margin: 0;
  color: #0f172a;
}

.category-card h3 {
  font-size: 1.35rem;
}

.category-card p {
  margin-top: 0.65rem;
  opacity: 0.9;
  line-height: 1.55;
}

.cta {
  background: linear-gradient(135deg, var(--primary) 0%, #1e3a8a 100%);
  color: white;
  padding: 3rem 0;
}

.cta-inner {
  display: flex;
  justify-content: space-between;
  gap: 1.5rem;
  align-items: center;
  flex-wrap: wrap;
}

.cta h2 {
  margin: 0 0 0.45rem;
  font-size: clamp(2rem, 3vw, 2.6rem);
  letter-spacing: -0.04em;
}

.cta p {
  margin: 0;
  color: rgba(255, 255, 255, 0.8);
}

.page-header {
  background: linear-gradient(135deg, #eff6ff 0%, #fff7ed 100%);
  padding: 4.2rem 0 2.6rem;
}

.page-header h1 {
  margin: 0;
  font-size: clamp(2.2rem, 4vw, 3.3rem);
  color: var(--secondary);
  letter-spacing: -0.04em;
}

.page-header p {
  color: var(--muted);
  max-width: 720px;
  margin-top: 0.8rem;
  font-size: 1.04rem;
}

.contact-grid,
.policy-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 2rem;
}

.contact-card,
.form-card,
.policy-card {
  background: white;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 1.8rem;
  box-shadow: 0 12px 28px rgba(15, 23, 42, 0.04);
}

.contact-list {
  list-style: none;
  padding: 0;
  margin: 1rem 0 0;
}

.contact-list li {
  margin-bottom: 1rem;
  color: var(--muted);
  line-height: 1.6;
}

.contact-list strong {
  color: var(--secondary);
  display: block;
  margin-bottom: 0.25rem;
}

form {
  display: grid;
  gap: 1rem;
}

.form-toast {
  display: none;
  margin-bottom: 1rem;
  padding: 0.9rem 1rem;
  border-radius: 12px;
  background: #ecfdf3;
  color: #065f46;
  border: 1px solid #a7f3d0;
  font-weight: 600;
}

.form-toast.show {
  display: block;
}

label {
  display: grid;
  gap: 0.45rem;
  color: var(--secondary);
  font-weight: 600;
}

input,
textarea,
button {
  font: inherit;
}

input,
textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #f8fafc;
  padding: 0.95rem 1rem;
  color: var(--secondary);
}

input:focus,
textarea:focus {
  outline: 2px solid rgba(37, 99, 235, 0.15);
  border-color: var(--primary);
}

textarea {
  min-height: 170px;
  resize: vertical;
}

ul.checklist {
  margin: 0.9rem 0 0;
  padding-left: 1.2rem;
  color: var(--muted);
}

ul.checklist li + li {
  margin-top: 0.5rem;
}

footer {
  background: linear-gradient(180deg, var(--secondary) 0%, #0b1120 100%);
  color: rgba(255, 255, 255, 0.82);
  padding: 2.2rem 0 1.5rem;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  align-items: center;
}

.footer-links {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.footer-links a {
  color: rgba(255, 255, 255, 0.8);
}

@media (max-width: 900px) {
  .hero-grid,
  .contact-grid,
  .policy-grid,
  .feature-grid,
  .category-grid,
  .product-grid,
  .info-grid,
  .stats-grid {
    grid-template-columns: 1fr 1fr;
  }

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

  .section {
    padding: 3.25rem 0;
  }
}

@media (max-width: 640px) {
  .feature-grid,
  .category-grid,
  .product-grid,
  .info-grid,
  .stats-grid {
    grid-template-columns: 1fr;
  }

  .navbar-inner {
    align-items: flex-start;
    flex-direction: column;
    gap: 0.8rem;
  }

  .nav-links {
    gap: 0.35rem;
  }

  .nav-links a {
    padding: 0.6rem 0.7rem;
  }

  .hero {
    padding-top: 3.5rem;
  }

  .button-row {
    flex-direction: column;
    align-items: stretch;
  }

  .btn {
    width: 100%;
  }
}