:root {
  --background: #ffffff;
  --foreground: #0f172a;
  --muted: #f8fafc;
  --card: #ffffff;
  --card-dark: #1e293b;
  --card-border-dark: #334155;
  --text-muted: #4b5563;
  --text-light: #d1d5db;
  --text-dim: #9ca3af;
  --gold: #facc15;
  --gold-strong: #eab308;
  --navy: #0f172a;
  --navy-soft: #1e293b;
  --hero-gradient: linear-gradient(135deg, #1a237e, #6a1b9a, #263238);
  --brand-gradient: linear-gradient(135deg, #ffd700, #ff6b35);
  --blue-50: #eff6ff;
  --blue-100: #dbeafe;
  --blue-600: #2563eb;
  --green-50: #f0fdf4;
  --green-100: #dcfce7;
  --green-600: #16a34a;
  --purple-50: #faf5ff;
  --purple-100: #f3e8ff;
  --purple-600: #9333ea;
  --yellow-100: #fef9c3;
  --yellow-600: #ca8a04;
  --shadow-lg: 0 20px 40px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 12px 30px rgba(15, 23, 42, 0.12);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--background);
  color: var(--foreground);
  font-family: "Source Han Sans", Roboto, sans-serif;
}

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

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

button,
input,
textarea,
select {
  font: inherit;
}

.icon-defs {
  position: absolute;
  width: 0;
  height: 0;
  overflow: hidden;
}

.container {
  width: 100%;
  margin: 0 auto;
  padding-inline: 1rem;
}

@media (min-width: 640px) {
  .container {
    max-width: 40rem;
  }
}

@media (min-width: 768px) {
  .container {
    max-width: 48rem;
  }
}

@media (min-width: 1024px) {
  .container {
    max-width: 64rem;
  }
}

@media (min-width: 1280px) {
  .container {
    max-width: 80rem;
  }
}

@media (min-width: 1536px) {
  .container {
    max-width: 96rem;
  }
}

.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 50;
  background: rgba(15, 23, 42, 0.95);
  border-bottom: 1px solid #1e293b;
  backdrop-filter: blur(8px);
}

.nav-shell {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 0;
}

.brand {
  font-size: 1.5rem;
  font-weight: 700;
  color: #fff;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.main-nav a,
.contact-link {
  transition: color 0.2s ease, background-color 0.2s ease, border-color 0.2s ease;
}

.main-nav a {
  color: #fff;
}

.main-nav a:hover,
.contact-link:hover {
  color: var(--gold);
}

.contact-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--gold);
  color: var(--gold);
  border-radius: 999px;
  padding: 0.6rem 1rem;
  font-size: 0.95rem;
  font-weight: 500;
}

.contact-link:hover {
  background: var(--gold);
  color: var(--navy);
}

.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.hero-bg,
.hero-overlay {
  position: absolute;
  inset: 0;
}

.hero-bg {
  background: center / cover no-repeat url("./assets/hero_banner-Z-XsdSUn.jpg");
}

.hero-overlay {
  background: var(--hero-gradient);
  opacity: 0.9;
}

.hero-content {
  position: relative;
  z-index: 1;
  width: min(100% - 2rem, 72rem);
  margin: 0 auto;
  text-align: center;
  color: #fff;
  padding: 8rem 1rem 4rem;
}

.badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.25rem;
  width: fit-content;
  padding: 0.125rem 0.5rem;
  border: 1px solid transparent;
  border-radius: 0.5rem;
  font-size: 0.75rem;
  line-height: 1rem;
  font-weight: 500;
  color: #0f172a;
  background: #f4f4f5;
  white-space: nowrap;
}

.badge-hero {
  gap: 0.5rem;
  padding: 0.55rem 1rem;
  border-radius: 999px;
  font-size: 0.95rem;
  line-height: normal;
  background: rgba(250, 204, 21, 0.2);
  border-color: var(--gold);
  color: var(--gold);
}

.badge .icon-sm {
  width: 1rem;
  height: 1rem;
}

.badge-hero .icon-sm {
  width: 1rem;
  height: 1rem;
}

.text-gradient {
  background: var(--brand-gradient);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero h1 {
  margin: 0 0 1.5rem;
  font-size: 3rem;
  line-height: 1.25;
  font-weight: 700;
}

.hero-subtitle {
  font-size: 1.875rem;
  line-height: 1.2;
  font-weight: 400;
}

.hero-copy {
  max-width: 56rem;
  margin: 0 auto 2rem;
  color: #e5e7eb;
  font-size: 1.25rem;
  line-height: 1.625;
}

.hero-actions {
  display: flex;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  white-space: nowrap;
  border-radius: 999px;
  padding: 0.95rem 2rem;
  font-size: 1.05rem;
  font-weight: 600;
  transition: color 0.2s ease, background-color 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
  border: 1px solid transparent;
}

.btn:hover {
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.08);
}

.btn-primary {
  background: var(--gold);
  color: var(--navy);
}

.btn-primary:hover {
  background: var(--gold-strong);
}

.btn-outline {
  border-color: #fff;
  color: #fff;
}

.btn-outline:hover {
  background: #fff;
  color: var(--navy);
}

.btn-dark {
  background: var(--navy);
  color: #fff;
}

.btn-dark:hover {
  background: #1e293b;
}

.btn-slate-rect {
  height: 2.5rem;
  padding: 0 1.5rem;
  border-radius: 0.5rem;
  background: #0f172a;
  color: #fff;
  font-size: 0.875rem;
  font-weight: 500;
  line-height: 1.25rem;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
  white-space: nowrap;
}

.btn-slate-rect:hover {
  background: #1e293b;
}

.section {
  padding: 5rem 0;
}

.section-light {
  background: #fff;
}

.section-muted {
  background: #f8fafc;
}

.section-dark {
  background: var(--navy);
  color: #fff;
}

.section-heading {
  margin: 0 0 4rem;
  text-align: center;
}

.section-heading h2 {
  margin: 1rem 0 1.5rem;
  font-size: 2.25rem;
  line-height: 1.1111111111;
}

.section-heading p {
  max-width: 56rem;
  margin: 0 auto;
  color: #4b5563;
  font-size: 1.25rem;
  line-height: 1.625;
}

.section-heading-dark p {
  color: var(--text-light);
}

.two-column {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  align-items: center;
  gap: 3rem;
}

.feature-image {
  width: 100%;
  height: 24rem;
  object-fit: cover;
  border-radius: 1rem;
  box-shadow: var(--shadow-lg);
}

.column-copy h3,
.two-column h3 {
  margin: 0 0 1.5rem;
}

.title-2xl {
  font-size: 1.5rem;
  line-height: 1.3333333333;
}

.title-3xl {
  font-size: 1.875rem;
  line-height: 1.2;
}

.architecture-copy {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.column-copy p,
.two-column > div > p {
  margin: 0;
  color: #4b5563;
  font-size: 1.125rem;
  line-height: 1.625;
}

.section-dark .column-copy p {
  color: var(--text-light);
}

.feature-list {
  display: grid;
  gap: 1.5rem;
}

.feature-row {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
}

.feature-row h4 {
  margin: 0 0 0.5rem;
  font-size: 1.125rem;
}

.feature-row p {
  margin: 0;
  color: #4b5563;
  line-height: 1.625;
}

.icon,
.icon-sm,
.icon-lg {
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.icon {
  width: 1.5rem;
  height: 1.5rem;
}

.icon-sm {
  width: 1rem;
  height: 1rem;
}

.icon-lg {
  width: 2rem;
  height: 2rem;
}

.icon-box,
.icon-circle,
.icon-square {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.icon-box {
  padding: 0.75rem;
  border-radius: 0.75rem;
}

.icon-circle {
  width: 4rem;
  height: 4rem;
  border-radius: 999px;
}

.icon-square {
  width: 3rem;
  height: 3rem;
  border-radius: 0.75rem;
  margin-bottom: 1rem;
}

.blue {
  background: var(--blue-100);
  color: var(--blue-600);
}

.green {
  background: var(--green-100);
  color: var(--green-600);
}

.purple {
  background: var(--purple-100);
  color: var(--purple-600);
}

.yellow {
  background: var(--yellow-100);
  color: var(--yellow-600);
}

.blue-solid {
  background: var(--blue-600);
  color: #fff;
}

.green-solid {
  background: var(--green-600);
  color: #fff;
}

.purple-solid {
  background: var(--purple-600);
  color: #fff;
}

.highlight-banner {
  margin-top: 4rem;
  text-align: center;
}

.highlight-banner p {
  display: inline-block;
  margin: 0;
  padding: 1rem 2rem;
  border-radius: 1rem;
  background: linear-gradient(90deg, #2563eb, #9333ea);
  color: #fff;
  font-size: 1.25rem;
  font-weight: 600;
}

.card-grid {
  display: grid;
  gap: 2rem;
}

.four-cols {
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin-bottom: 4rem;
}

.three-cols {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin-bottom: 4rem;
}

.card {
  background: var(--card);
  border-radius: 1rem;
  box-shadow: 0 10px 24px rgba(15, 23, 42, 0.08);
  padding: 2rem;
}

.hover-card {
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.hover-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
}

.card-top {
  display: flex;
  flex-direction: column;
}

.card-top.centered {
  align-items: center;
  text-align: center;
}

.card h3 {
  margin: 0;
  font-size: 1.125rem;
}

.card p {
  margin: 1rem 0 0;
  color: #4b5563;
  line-height: 1.625;
}

.eco-card {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  padding: 1.5rem 0;
  border: 1px solid #e5e7eb;
  border-radius: 0.875rem;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
  padding-block: 1.5rem;
}

.eco-card-header {
  display: grid;
  grid-auto-rows: min-content;
  grid-template-rows: auto auto;
  align-items: start;
  gap: 0.375rem;
  padding-inline: 1.5rem;
  padding-block: 0;
}

.eco-card-header h3 {
  margin: 0;
  font-size: 1.125rem;
  line-height: 1;
  font-weight: 600;
}

.eco-card-header .icon-circle {
  margin: 0 auto 1rem;
}

.eco-card-body {
  margin: 0;
  padding-inline: 1.5rem;
  color: #4b5563;
  font-size: 0.875rem;
  line-height: 1.4285714286;
  text-align: center;
}

.architecture-text {
  margin: 0 0 1.5rem;
  max-width: none;
}

.architecture-copy .btn-slate-rect {
  width: fit-content;
  margin: 0.5rem 0 0;
  align-self: flex-start;
}

.tint-blue {
  background: linear-gradient(135deg, var(--blue-50), var(--blue-100));
}

.tint-purple {
  background: linear-gradient(135deg, var(--purple-50), var(--purple-100));
}

.tint-green {
  background: linear-gradient(135deg, var(--green-50), var(--green-100));
}

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

.advantage-list li {
  position: relative;
  padding-left: 1.4rem;
  color: #374151;
  font-size: 1.125rem;
}

.advantage-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.6rem;
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 999px;
  background: var(--gold);
}

.column-copy > p:last-child {
  margin-top: 1.5rem;
}

.about-grid {
  margin-bottom: 4rem;
}

.stat-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
  margin-top: 1.5rem;
}

.stat-card {
  text-align: center;
  padding: 1rem;
  border-radius: 0.75rem;
  background: #1e293b;
}

.stat-card strong {
  display: block;
  margin-bottom: 0.5rem;
  color: var(--gold);
  font-size: 1.5rem;
}

.stat-card span {
  color: var(--text-dim);
  font-size: 0.875rem;
}

.stack-cards {
  display: grid;
  gap: 1.5rem;
}

.dark-card {
  background: #1e293b;
  border: 1px solid #334155;
  box-shadow: none;
}

.dark-card h3 {
  color: #fff;
}

.dark-list,
.dark-bullets {
  display: grid;
  gap: 0.75rem;
  color: var(--text-light);
}

.dark-list div {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.dark-list .icon {
  color: var(--gold);
}

.contact-block {
  text-align: center;
}

.contact-block h3 {
  margin: 0 0 2rem;
}

.contact-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.5rem;
  width: min(100%, 56rem);
  margin: 0 auto;
}

.contact-card {
  background: #1e293b;
  border-radius: 0.75rem;
  padding: 1.5rem;
}

.contact-card h4 {
  margin: 0 0 0.5rem;
  font-size: 1rem;
}

.contact-card p {
  margin: 0;
  color: var(--gold);
}

.small-link {
  font-size: 0.875rem;
}

.site-footer {
  background: #000;
  color: #fff;
  padding: 2rem 0;
}

.footer-shell {
  text-align: center;
}

.footer-brand {
  margin-bottom: 1rem;
  font-size: 1.5rem;
  font-weight: 700;
}

.site-footer p {
  margin: 0 0 1rem;
  color: #9ca3af;
}

.footer-copy {
  margin-bottom: 0;
  font-size: 0.875rem;
}

@media (max-width: 1024px) {
  .four-cols {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .three-cols,
  .contact-grid,
  .two-column,
  .about-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .section {
    padding: 3rem 0;
  }

  .nav-shell {
    padding: 1rem;
  }

  .main-nav,
  .contact-link {
    display: none;
  }

  .hero-content {
    padding-top: 7rem;
  }

  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .btn {
    width: 100%;
  }

  .four-cols {
    grid-template-columns: 1fr;
  }

  .feature-image {
    height: 18rem;
  }

  .section-heading {
    margin-bottom: 3rem;
  }

  .section-heading p {
    font-size: 1.05rem;
  }

  .highlight-banner p {
    font-size: 1rem;
  }
}

@media (min-width: 768px) {
  .hero h1 {
    font-size: 4.5rem;
  }

  .hero-subtitle {
    font-size: 2.25rem;
    line-height: 1.1111111111;
  }

  .hero-copy {
    font-size: 1.5rem;
  }

  .section-heading h2 {
    font-size: 3rem;
    line-height: 1;
  }
}