*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --primary-light: #eff6ff;
  --primary-border: #bfdbfe;
  --surface: #ffffff;
  --surface-alt: #f8fafc;
  --surface-card: #ffffff;
  --border: #e2e8f0;
  --border-light: #f1f5f9;
  --text: #142958;
  --text-secondary: #475569;
  --text-muted: #94a3b8;
  --success: #10b981;
  --warning: #f59e0b;
  --error: #ef4444;
  --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.04);
  --shadow-md: 0 4px 12px rgba(15, 23, 42, 0.06);
  --shadow-lg: 0 8px 30px rgba(15, 23, 42, 0.08);
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --font: 'Space Grotesk', sans-serif;
  --max-width: 1200px;
  --gutter: 24px;
  --bg-section-dark: #142958;
  --bg-section-light: #CFDCE9;
  --bg-section-cost: #CFDCE9;
  --bg-section-hw: #B5C2D4;
}

[data-theme="dark"] {
  --primary: #60a5fa;
  --primary-dark: #3b82f6;
  --primary-light: #1e3a5f;
  --primary-border: #3b82f6;
  --surface: #0f172a;
  --surface-alt: #1e293b;
  --surface-card: #1e293b;
  --border: #334155;
  --border-light: #1e293b;
  --text: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --success: #34d399;
  --warning: #fbbf24;
  --error: #f87171;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.5);
  --bg-section-dark: #0a0f1a;
  --bg-section-light: #1e293b;
  --bg-section-cost: #1e293b;
  --bg-section-hw: #1e293b;
  --toggle-border: rgba(0, 0, 0, 0.15);
  --solution-text: #142958;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font);
  background: var(--surface);
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

section {
  padding: 80px 0;
}

/* ─── NAV ─── */
nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 1);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid transparent;
  transition: box-shadow 0.3s, border-color 0.3s, background 0.3s;
}

[data-theme="dark"] nav { background: #E5E9EE; }
nav.scrolled { box-shadow: 0 4px 24px rgba(15, 23, 42, 0.08); border-bottom-color: var(--border); }

/* Theme Toggle Icons */
.icon-moon { display: block; }
.icon-sun { display: none; }
[data-theme="dark"] .icon-moon { display: none; }
[data-theme="dark"] .icon-sun { display: block; }

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

.nav-logo {
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: -0.02em;
  color: var(--text);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

.nav-logo em {
  font-style: normal;
  color: var(--primary);
}

.nav-desktop {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-dropdown-group {
  position: relative;
}

.nav-dropdown-trigger {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.88rem;
  font-weight: 500;
  cursor: pointer;
  padding: 8px 14px;
  display: flex;
  align-items: center;
  gap: 4px;
  background: none;
  border: none;
  font-family: var(--font);
  border-radius: var(--radius-sm);
  transition: background 0.2s, color 0.2s;
}

.nav-dropdown-trigger:hover {
  background: var(--surface-alt);
  color: var(--text);
}

.nav-dropdown-trigger::after {
  content: '';
  display: inline-block;
  width: 4px;
  height: 4px;
  border-right: 1.5px solid currentColor;
  border-bottom: 1.5px solid currentColor;
  transform: rotate(45deg);
  margin-top: -2px;
  transition: transform 0.2s;
}

.nav-dropdown-group:hover .nav-dropdown-trigger::after {
  transform: rotate(-135deg);
  margin-top: 2px;
}

.nav-dropdown {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(6px);
  background: var(--surface-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-lg);
  min-width: 190px;
  padding: 6px;
  opacity: 0;
  pointer-events: none;
  transition: all 0.2s;
}

.nav-dropdown-group:hover .nav-dropdown {
  opacity: 1;
  pointer-events: all;
  transform: translateX(-50%) translateY(0);
}

.nav-dropdown a {
  display: block;
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.85rem;
  font-weight: 500;
  padding: 8px 12px;
  border-radius: 4px;
  transition: all 0.15s;
}

.nav-dropdown a:hover {
  background: var(--surface-alt);
  color: var(--text);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav-links>a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.88rem;
  font-weight: 500;
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  transition: background 0.2s, color 0.2s;
}

.nav-links>a:hover {
  background: var(--surface-alt);
  color: var(--text);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.btn-nav {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.btn-nav span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: 0.3s;
}

/* ─── BUTTONS ─── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font);
  font-weight: 500;
  font-size: 0.9rem;
  border: none;
  cursor: pointer;
  text-decoration: none;
  transition: all 0.2s;
  border-radius: var(--radius-sm);
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, #2563eb, #1d4ed8);
  color: #fff;
  padding: 10px 24px;
  position: relative;
  overflow: hidden;
}

.btn-primary:hover {
  background: linear-gradient(135deg, #1d4ed8, #1e40af);
  box-shadow: 0 4px 16px rgba(37, 99, 235, 0.35);
  transform: translateY(-1px);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-secondary {
  background: transparent;
  color: var(--text);
  border: 1.5px solid var(--border);
  padding: 10px 24px;
}

.btn-secondary:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: rgba(37, 99, 235, 0.04);
}

.btn-large {
  padding: 13px 32px;
  font-size: 0.95rem;
}

.btn-small {
  padding: 7px 16px;
  font-size: 0.83rem;
}

.btn-ghost {
  background: transparent;
  color: var(--primary);
  padding: 10px 16px;
}

.btn-ghost:hover {
  background: var(--primary-light);
}

/* ─── HERO ─── */
.hero-particles {
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  width: 100%;
  height: 100%;
}

.hero {
  padding: 160px 0 120px;
  min-height: 80vh;
  background:
    linear-gradient(rgba(0, 0, 0, 0.5), rgba(0, 0, 0, 0.5)),
    url('../images/bg.png') top/cover no-repeat,
    linear-gradient(135deg, #142958 0%, #142958 100%);
  position: relative;
  overflow: hidden;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, #3b82f6, #1d4ed8, #142958);
  z-index: 2;
  pointer-events: none;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 20% 50%, rgba(37, 99, 235, 0.12) 0%, transparent 60%),
    radial-gradient(ellipse at 80% 50%, rgba(99, 102, 241, 0.08) 0%, transparent 60%);
  pointer-events: none;
}

/* ─── LENS FLARE ─── */
.lens-flare {
  position: absolute;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
  z-index: 0;
}

.flare {
  position: absolute;
  border-radius: 50%;
  animation: flareSweep 6s ease-in-out infinite;
}

.flare-1 {
  width: 600px;
  height: 600px;
  top: -200px;
  left: -300px;
  background: radial-gradient(circle, rgba(59, 130, 246, 0.35) 0%, rgba(59, 130, 246, 0.12) 30%, transparent 70%);
  animation-duration: 8s;
}

.flare-2 {
  width: 300px;
  height: 300px;
  top: 60%;
  left: 80%;
  background: radial-gradient(circle, rgba(99, 102, 241, 0.3) 0%, rgba(99, 102, 241, 0.1) 30%, transparent 70%);
  animation-duration: 10s;
  animation-delay: -3s;
}

.flare-3 {
  width: 150px;
  height: 150px;
  top: 20%;
  left: 60%;
  background: radial-gradient(circle, rgba(168, 85, 247, 0.25) 0%, transparent 60%);
  animation-duration: 7s;
  animation-delay: -1.5s;
}

.flare-4 {
  width: 80px;
  height: 80px;
  top: 40%;
  left: 15%;
  background: radial-gradient(circle, rgba(59, 130, 246, 0.4) 0%, transparent 60%);
  animation-duration: 5s;
  animation-delay: -4s;
  filter: blur(2px);
}

@keyframes flareSweep {

  0%,
  100% {
    transform: translate(0, 0) scale(1);
    opacity: 0.8;
  }

  25% {
    transform: translate(40px, -30px) scale(1.1);
    opacity: 1;
  }

  50% {
    transform: translate(-20px, 20px) scale(0.9);
    opacity: 0.9;
  }

  75% {
    transform: translate(30px, 10px) scale(1.05);
    opacity: 1;
  }
}

.hero .container {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  padding-top: 115px;
  min-height: calc(80vh - 160px - 120px);
}

.hero-content {
  max-width: 700px;
}

.hero-content .pre {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.95rem;
  font-weight: 600;
  color: #fff;
  background: rgba(255, 255, 255, 0.12);
  padding: 5px 14px;
  border-radius: 9999px;
  margin-bottom: 20px;
}

.hero-content h1 {
  font-size: clamp(2.2rem, 5vw, 3.4rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.08;
  color: #fff;
  margin-bottom: 16px;
}

.hero-content h1 em {
  font-style: normal;
  color: #60a5fa;
}

.hero-content h1 .gradient-text {
  background: linear-gradient(135deg, #60a5fa, #a78bfa, #60a5fa);
  background-size: 200% auto;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-content p {
  font-size: 1.05rem;
  color: #fff;
  line-height: 1.7;
  max-width: 600px;
  margin-bottom: 28px;
}

.hero-ctas {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-top: 48px;
  padding-top: 32px;
  border-top: 1px solid rgba(37, 99, 235, 0.1);
}

.hero-stat {
  text-align: center;
}

.hero-stat .num {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--primary);
  line-height: 1.2;
}

.hero-stat .lbl {
  font-size: 0.78rem;
  color: var(--text-muted);
  font-weight: 500;
  margin-top: 2px;
}



/* ─── SCROLL REVEAL ─── */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.5s cubic-bezier(0.16, 1, 0.3, 1), transform 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

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

.delay-100 {
  transition-delay: 0.1s;
}

.delay-200 {
  transition-delay: 0.2s;
}

.delay-300 {
  transition-delay: 0.3s;
}

.delay-400 {
  transition-delay: 0.4s;
}

/* ─── TYPOGRAPHY ─── */
.section-label {
  display: inline-flex;
  align-items: center;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--primary);
  margin-bottom: 12px;
  background: rgba(37, 99, 235, 0.08);
  padding: 5px 14px;
  border-radius: 9999px;
}

.section-title {
  font-size: clamp(1.6rem, 3.5vw, 2.2rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: 14px;
  color: var(--text);
}

.section-sub {
  font-size: 1rem;
  color: var(--text-secondary);
  max-width: 680px;
  line-height: 1.7;
}

/* ─── TRUST BAR ─── */
.trust-bar {
  padding: 36px 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  background: var(--surface-alt);
}

.trust-bar p {
  text-align: center;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 20px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.trust-logos {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px;
}

.trust-logos span {
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--text-secondary);
  padding: 6px 16px;
  background: var(--surface-card);
  border: 1px solid var(--border);
  border-radius: 9999px;
  transition: all 0.2s;
  white-space: nowrap;
}

.trust-logos span:hover {
  border-color: var(--primary-border);
  background: var(--primary-light);
  color: var(--primary);
}

/* ─── PRODUCT TIERS ─── */
.tier-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 36px;
}

.tier-card {
  background: var(--surface-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 32px 28px;
  transition: all 0.25s;
  box-shadow: var(--shadow-sm);
}

.tier-card:hover {
  border-color: var(--primary-border);
  box-shadow: 0 12px 32px rgba(37, 99, 235, 0.12);
  transform: translateY(-3px);
}

.tier-card .icon {
  font-size: 1.8rem;
  margin-bottom: 12px;
}

.tier-card .badge {
  display: inline-block;
  font-size: 0.68rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 3px 12px;
  border-radius: 9999px;
  margin-bottom: 12px;
  background: var(--primary-light);
  color: var(--primary);
}

.tier-card h3 {
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 4px;
}

.tier-card .subtitle {
  color: var(--text-secondary);
  font-size: 0.83rem;
  margin-bottom: 10px;
}

.tier-card p {
  color: var(--text-secondary);
  font-size: 0.86rem;
  line-height: 1.65;
  margin-bottom: 14px;
}

.tier-card h4 {
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 8px;
}

.tier-card ul {
  list-style: none;
  margin-bottom: 18px;
}

.tier-card ul li {
  padding: 3px 0;
  color: var(--text-secondary);
  font-size: 0.84rem;
  display: flex;
  align-items: flex-start;
  gap: 8px;
}

.tier-card ul li::before {
  content: '→';
  color: var(--primary);
  font-weight: 500;
  flex-shrink: 0;
}

.tier-card .tier-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--primary);
  font-weight: 500;
  font-size: 0.86rem;
  text-decoration: none;
  transition: gap 0.2s;
}

.tier-card .tier-link:hover {
  gap: 10px;
}

/* ─── GPU CARDS ─── */
.gpu-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 36px;
}

.gpu-card {
  background: var(--surface-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 28px 24px;
  transition: all 0.25s;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
}

.gpu-card:hover {
  border-color: var(--primary-border);
  box-shadow: 0 12px 32px rgba(37, 99, 235, 0.1);
  transform: translateY(-3px);
}

.cost-card:hover {
  border-color: var(--primary-border) !important;
  box-shadow: 0 12px 32px rgba(37, 99, 235, 0.1) !important;
  transform: translateY(-3px);
}

.gpu-card .icon {
  font-size: 1.6rem;
  margin-bottom: 6px;
}

.gpu-card h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 8px;
  line-height: 1.3;
}

.gpu-card p {
  color: var(--text-secondary);
  font-size: 0.86rem;
  line-height: 1.65;
  margin-bottom: 14px;
}

/* ─── WHY GRID ─── */
.why-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-top: 36px;
}

.why-card {
  background: var(--surface-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 24px;
  transition: all 0.2s;
  box-shadow: var(--shadow-sm);
}

.why-card:hover {
  border-color: var(--primary-border);
  box-shadow: 0 8px 24px rgba(37, 99, 235, 0.1);
  transform: translateY(-2px);
}

.why-card .icon {
  font-size: 1.4rem;
  margin-bottom: 10px;
}

.why-card h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 6px;
}

.why-card p {
  font-size: 0.86rem;
  color: var(--text-secondary);
  line-height: 1.65;
}

/* ─── FACTORY STEPS ─── */
.factory-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-top: 36px;
}

.factory-step {
  background: var(--surface-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 24px 20px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.06);
}

.factory-step .num {
  font-size: 0.68rem;
  font-weight: 600;
  color: var(--primary);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 8px;
}

.factory-step h3 {
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 6px;
}

.factory-step p {
  font-size: 0.84rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ─── PERFORMANCE TABLE ─── */
.perf-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 32px;
}

.perf-table tr {
  border-bottom: 1px solid var(--border);
}

.perf-table td {
  padding: 12px 20px;
  font-size: 0.88rem;
}

.perf-table td:first-child {
  color: var(--text-secondary);
  font-weight: 500;
}

.perf-table td:last-child {
  color: var(--text);
  font-weight: 600;
  text-align: right;
}

/* ─── TESTIMONIALS ─── */
.testimonial-grid {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-top: 36px;
}

.testimonial {
  background: var(--surface-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 22px 24px;
  box-shadow: var(--shadow-sm);
}

.testimonial p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.65;
}

.testimonial .cite {
  margin-top: 10px;
  font-size: 0.84rem;
  font-weight: 500;
  color: var(--text);
  font-style: normal;
}

.testimonial .cite span {
  color: var(--text-muted);
  font-weight: 400;
}

/* ─── COMPARISON TABLE ─── */
.comp-table-wrap {
  overflow-x: auto;
  margin-top: 36px;
}

.comp-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.84rem;
}

.comp-table th {
  background: var(--surface-alt);
  padding: 12px 16px;
  text-align: left;
  font-weight: 600;
  color: var(--text);
  border-bottom: 2px solid var(--border);
}

.comp-table td {
  padding: 11px 16px;
  border-bottom: 1px solid var(--border);
  color: var(--text-secondary);
}

.comp-table td:first-child {
  font-weight: 500;
  color: var(--text);
}

.comp-table .check {
  color: var(--success);
  font-weight: 600;
}

.comp-table .cross {
  color: var(--error);
}

/* ─── PRICING ─── */
.pricing-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-top: 36px;
}

.pricing-table {
  background: var(--surface-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 24px;
  box-shadow: var(--shadow-sm);
}

.pricing-table h3 {
  font-weight: 600;
  font-size: 1rem;
  margin-bottom: 14px;
}

.pricing-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
}

.pricing-row:last-child {
  border-bottom: none;
}

.pricing-row .name {
  color: var(--text-secondary);
  font-size: 0.86rem;
}

.pricing-row .vram {
  color: var(--text-muted);
  font-size: 0.78rem;
  margin-left: 6px;
}

.pricing-row .rate {
  font-weight: 600;
  color: var(--primary);
}

.reserve-row {
  display: flex;
  justify-content: space-between;
  padding: 9px 0;
  border-bottom: 1px solid var(--border);
  font-size: 0.86rem;
}

.reserve-row:last-child {
  border-bottom: none;
}

.reserve-row .commit {
  color: var(--text-secondary);
}

.reserve-row .savings {
  color: var(--success);
  font-weight: 600;
}

.pay-methods {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 16px;
}

.pay-methods span {
  font-size: 0.76rem;
  color: var(--text-secondary);
  background: var(--surface-alt);
  border: 1px solid var(--border);
  padding: 4px 12px;
  border-radius: 9999px;
}

.pricing-enterprise {
  background: var(--surface-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 24px 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  box-shadow: var(--shadow-sm);
  grid-column: 1 / -1;
}

.pricing-enterprise h3 {
  font-weight: 600;
  font-size: 1rem;
  margin-bottom: 4px;
}

.pricing-enterprise p {
  color: var(--text-secondary);
  font-size: 0.86rem;
}

/* ─── FAQ ─── */
.faq-list {
  max-width: 1100px;
  margin: 36px auto 0;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  align-items: start;
}

.faq-item {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-sm);
  overflow: hidden;
  transition: border-color 0.3s, background 0.3s;
}

.faq-item.open {
  border-color: rgba(255, 255, 255, 0.25);
  background: rgba(255, 255, 255, 0.08);
}

.faq-item:hover {
  border-color: rgba(255, 255, 255, 0.2);
}

.faq-q {
  padding: 16px 20px;
  font-weight: 500;
  font-size: 0.92rem;
  color: #fff;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  user-select: none;
  gap: 12px;
  transition: background 0.2s;
}

.faq-q:hover {
  background: rgba(255, 255, 255, 0.08);
}

.faq-item.open .faq-q:hover {
  background: transparent;
}

.faq-q .icon {
  font-size: 1.2rem;
  transition: transform 0.3s;
  color: rgba(255, 255, 255, 0.5);
  flex-shrink: 0;
}

.faq-item.open .faq-q .icon {
  transform: rotate(45deg);
  color: #fff;
}

.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s cubic-bezier(0.16, 1, 0.3, 1), padding 0.3s;
}

.faq-item.open .faq-a {
  max-height: 500px;
  padding: 0 20px 16px;
}

.faq-a p {
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.86rem;
  line-height: 1.65;
}

/* ─── USE CASES GRID ─── */
.usecase-grid {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-top: 36px;
}

.usecase-card {
  background: var(--surface-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 24px;
  box-shadow: var(--shadow-sm);
  transition: all 0.2s;
}

.usecase-card:hover {
  border-color: var(--primary-border);
  box-shadow: var(--shadow-md);
}

.usecase-card .icon {
  font-size: 1.5rem;
  margin-bottom: 8px;
}

.usecase-card h3 {
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 6px;
}

.usecase-card p {
  font-size: 0.86rem;
  color: var(--text-secondary);
  line-height: 1.65;
  margin-bottom: 10px;
}

.usecase-card .meta {
  font-size: 0.8rem;
  color: var(--text-muted);
  display: flex;
  flex-wrap: wrap;
  gap: 6px 14px;
}

.usecase-card .meta strong {
  color: var(--text-secondary);
}

/* ─── CONTACT ─── */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  margin-top: 36px;
}

.contact-details {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.contact-row {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 14px 0;
  border-bottom: 1px solid var(--border);
}

.contact-row .icon {
  font-size: 1.2rem;
  flex-shrink: 0;
}

.contact-row .label {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.contact-row .value {
  font-size: 0.92rem;
  color: var(--text);
  font-weight: 500;
}

.contact-row .hours {
  font-size: 0.78rem;
  color: var(--text-secondary);
}

.form-group {
  margin-bottom: 16px;
}

.form-group label {
  display: block;
  font-size: 0.84rem;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 5px;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 10px 14px;
  font-family: var(--font);
  font-size: 0.9rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface-card);
  color: var(--text);
  transition: border-color 0.2s, box-shadow 0.2s;
  outline: none;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-group textarea {
  resize: vertical;
  min-height: 100px;
}

.form-msg {
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  font-size: 0.88rem;
  margin-bottom: 16px;
  line-height: 1.5;
}

.form-msg.success {
  background: #ecfdf5;
  color: #065f46;
  border: 1px solid #a7f3d0;
}

.form-msg.error {
  background: #fef2f2;
  color: #991b1b;
  border: 1px solid #fecaca;
}

/* ─── FINAL CTA ─── */
.final-cta {
  background: #eef2f6;
  border-top: 1px solid var(--border);
  text-align: center;
}

.final-cta .section-title {
  max-width: 650px;
  margin-left: auto;
  margin-right: auto;
}

.final-cta .section-sub {
  margin: 0 auto 36px;
}

.final-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.final-card {
  background: var(--surface-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 24px 20px;
  text-align: center;
  transition: all 0.2s;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.06);
}

.final-card:hover {
  border-color: var(--primary-border);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.final-card .icon {
  font-size: 1.6rem;
  margin-bottom: 8px;
}

.final-card h4 {
  font-weight: 600;
  font-size: 0.92rem;
  margin-bottom: 6px;
}

.final-card p {
  font-size: 0.8rem;
  color: var(--text-secondary);
  margin-bottom: 12px;
  line-height: 1.5;
}

.final-card a {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  color: var(--primary);
  font-weight: 500;
  font-size: 0.84rem;
  text-decoration: none;
}

.final-card a:hover {
  gap: 8px;
}

/* ─── FOOTER ─── */
footer {
  padding: 48px 0 24px;
  border-top: 1px solid var(--border);
  background: var(--bg-section-dark) url("data:image/svg+xml,%3Csvg width='1200' height='400' viewBox='0 0 1200 400' xmlns='http://www.w3.org/2000/svg'%3E%3Ccircle cx='150' cy='100' r='250' fill='%233B82F6' opacity='0.04'/%3E%3Ccircle cx='1050' cy='300' r='300' fill='%238B5CF6' opacity='0.03'/%3E%3C/svg%3E") no-repeat center/cover;
  color: rgba(255, 255, 255, 0.8);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 32px;
}

.footer-brand .tagline {
  font-weight: 600;
  font-size: 1.05rem;
  color: #fff;
}

.footer-brand p {
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.84rem;
  margin-top: 8px;
  line-height: 1.6;
  max-width: 340px;
}

.footer-brand p em {
  color: #fff;
  font-style: normal;
}

.footer-col h4 {
  font-size: 0.78rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  margin-bottom: 12px;
}

.footer-col a {
  display: block;
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.84rem;
  padding: 4px 0;
  transition: color 0.2s;
}

.footer-col a:hover {
  color: var(--primary);
}

.footer-contact {
  margin-top: 24px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  justify-content: space-between;
  align-items: center;
}

.footer-contact .info {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 24px;
  font-size: 0.84rem;
  color: var(--text-secondary);
}

.footer-contact .info span {
  display: flex;
  align-items: center;
  gap: 6px;
}

.footer-bottom {
  margin-top: 16px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  font-size: 0.78rem;
  color: var(--text-muted);
}

.footer-bottom a {
  color: var(--text-muted);
  text-decoration: none;
  transition: color 0.2s;
}

.footer-bottom a:hover {
  color: var(--primary);
}

.footer-bottom .links {
  display: flex;
  gap: 14px;
}

/* ─── MOBILE ─── */
.mobile-menu {
  position: fixed;
  top: 0;
  right: -100%;
  width: 280px;
  height: 100vh;
  background: var(--surface-card);
  border-left: 1px solid var(--border);
  padding: 80px 24px 24px;
  transition: right 0.35s cubic-bezier(0.16, 1, 0.3, 1);
  z-index: 99;
  display: flex;
  flex-direction: column;
  gap: 16px;
  box-shadow: var(--shadow-lg);
  overflow-y: auto;
}

.mobile-menu.open {
  right: 0;
}

.mobile-menu a {
  font-size: 1rem;
  font-weight: 500;
  color: var(--text-secondary);
  text-decoration: none;
}

.mobile-menu a:hover {
  color: var(--text);
}

.mobile-menu .mobile-group {
  margin-bottom: 4px;
}

.mobile-menu .mobile-group-label {
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  margin-bottom: 4px;
  margin-top: 8px;
}

.mobile-menu .mobile-group a {
  display: block;
  padding: 6px 0;
  font-size: 0.92rem;
}

.overlay {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.3);
  z-index: 98;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s;
}

.overlay.open {
  opacity: 1;
  pointer-events: all;
}

/* ─── PAGE HEADER ─── */
.page-header {
  padding: 120px 0 56px;
  background: linear-gradient(135deg, #eff6ff 0%, #dbeafe 50%, #f0f4ff 100%);
  position: relative;
  overflow: hidden;
}

.page-header::before {
  content: '';
  position: absolute;
  top: -30%;
  right: -10%;
  width: 400px;
  height: 400px;
  border-radius: 50%;
  background: radial-gradient(ellipse, rgba(37, 99, 235, 0.05) 0%, transparent 70%);
  pointer-events: none;
}

.page-header .container {
  position: relative;
  z-index: 1;
}

.page-header h1 {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.1;
  margin-bottom: 12px;
  color: var(--text);
}

.page-header p {
  font-size: 1rem;
  color: var(--text-secondary);
  max-width: 640px;
  line-height: 1.7;
}

.page-header .hero-ctas {
  margin-top: 24px;
}

/* ─── PAGE SECTION ─── */
.page-section {
  padding: 72px 0;
}

.page-section.alt {
  background: var(--surface-alt);
  background-image: radial-gradient(circle, rgba(37, 99, 235, 0.03) 1px, transparent 1px);
  background-size: 24px 24px;
}

.section-intro {
  max-width: 680px;
  margin-bottom: 36px;
}

.section-intro p {
  color: var(--text-secondary);
  font-size: 0.92rem;
  line-height: 1.7;
  margin-bottom: 14px;
}

/* ─── INLINE LIST ─── */
.inline-list {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 10px;
}

.inline-list span {
  font-size: 0.76rem;
  color: var(--text-secondary);
  background: var(--surface-alt);
  padding: 3px 10px;
  border-radius: 4px;
}

/* ─── FEATURE GRID ─── */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.feature-card {
  background: var(--surface-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 24px;
  box-shadow: var(--shadow-sm);
  transition: all 0.2s;
}

.feature-card:hover {
  border-color: var(--primary-border);
  box-shadow: var(--shadow-md);
}

.feature-card .icon {
  font-size: 1.4rem;
  margin-bottom: 10px;
}

.feature-card h4 {
  font-size: 0.92rem;
  font-weight: 600;
  margin-bottom: 6px;
}

.feature-card p {
  font-size: 0.84rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ─── NODE GRID ─── */
.node-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.node-card {
  background: var(--surface-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 20px;
  box-shadow: var(--shadow-sm);
}

.node-card h4 {
  font-size: 0.92rem;
  font-weight: 600;
  margin-bottom: 10px;
  color: var(--primary);
}

.node-row {
  display: flex;
  justify-content: space-between;
  padding: 5px 0;
  font-size: 0.82rem;
  border-bottom: 1px solid var(--border);
}

.node-row:last-child {
  border-bottom: none;
}

.node-row .lbl {
  color: var(--text-muted);
}

.node-row .val {
  font-weight: 500;
}

/* ─── INCLUDED LIST ─── */
.included-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  margin-top: 24px;
}

.included-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  background: var(--surface-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 0.86rem;
  color: var(--text-secondary);
}

.included-item .check {
  color: var(--success);
  font-weight: 600;
}

/* ─── BADGE ─── */
.badge-primary {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--primary);
  background: var(--primary-light);
  padding: 3px 12px;
  border-radius: 9999px;
}

/* ─── RESPONSIVE ─── */
@media (max-width: 1024px) {
  .gpu-grid {
    grid-template-columns: 1fr !important;
  }

  .hw-grid {
    grid-template-columns: 1fr !important;
  }

  .tier-grid {
    grid-template-columns: 1fr !important;
  }

  .why-grid {
    grid-template-columns: 1fr !important;
  }

  .factory-steps {
    grid-template-columns: 1fr 1fr;
  }

  .feature-grid {
    grid-template-columns: 1fr 1fr;
  }

  .node-grid {
    grid-template-columns: 1fr;
  }

  .final-grid {
    grid-template-columns: 1fr 1fr;
  }

  .pricing-grid {
    grid-template-columns: 1fr;
  }

  .pricing-enterprise {
    grid-column: 1;
    flex-direction: column;
    text-align: center;
  }

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

  .contact-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

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

  section {
    padding: 64px 0;
  }

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

@media (max-width: 768px) {

  .nav-desktop,
  .nav-actions .btn-ghost,
  .nav-actions .btn-secondary {
    display: none;
  }

  .btn-nav {
    display: flex;
  }

  section {
    padding: 48px 0;
  }

  .page-section {
    padding: 40px 0;
  }

  .factory-steps {
    grid-template-columns: 1fr;
  }

  .feature-grid {
    grid-template-columns: 1fr;
  }

  .final-grid {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .hero-stats {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }

  .footer-contact {
    flex-direction: column;
    align-items: flex-start;
  }

  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }

  .container {
    padding: 0 16px;
  }

  .page-header {
    padding: 104px 0 40px;
  }

  .hero {
    padding: 120px 0 64px;
    min-height: auto;
    background: linear-gradient(rgba(0, 0, 0, 0.5), rgba(0, 0, 0, 0.5)), url('../images/mobile-bg.jpg') top/cover no-repeat, linear-gradient(135deg, #142958, #142958);
  }

  .hero-content h1 {
    font-size: clamp(1.6rem, 6vw, 2.2rem);
  }

  .hero .container {
    padding-top: 80px;
    min-height: auto;
  }

  .hero-badges {
    flex-direction: column;
    gap: 6px;
  }

  .hero-badges span {
    font-size: 0.78rem;
    padding: 3px 10px;
    width: fit-content;
  }

  .section-title {
    font-size: clamp(1.2rem, 4.5vw, 1.6rem);
  }

  .section-sub {
    font-size: 0.88rem;
  }

  .hw-card {
    padding: 20px 16px;
  }

  .hw-specs {
    grid-template-columns: 1fr 1fr;
    gap: 6px;
  }

  .hw-specs .sp {
    padding: 8px 10px;
  }

  .hw-specs .sv {
    font-size: 0.78rem;
  }

  .hw-foot .price .am {
    font-size: 1.4rem;
  }

  .hw-foot .price .per {
    font-size: 0.72rem;
  }

  .tier-card {
    padding: 20px 16px;
  }

  .why-card {
    padding: 20px 16px;
  }

  .gpu-card {
    padding: 20px 16px;
  }

  .factory-step {
    padding: 20px 16px;
  }

  .faq-list {
    grid-template-columns: 1fr !important;
  }

  .faq-item {
    padding: 14px 16px;
  }

  .faq-q {
    font-size: 0.85rem;
  }

  .contact-details img {
    width: 100%;
    height: auto;
    border-radius: 8px;
  }

  .contact-form {
    padding: 20px 16px !important;
  }

  .contact-form div[style*="display:flex"] {
    flex-direction: column !important;
    gap: 0 !important;
  }

  .contact-form .form-group div[style*="align-items"] {
    flex-direction: row !important;
    gap: 6px !important;
  }

  .contact-form .form-group div[style*="align-items"] input {
    min-width: 0;
  }

  .contact-form .form-group div[style*="align-items"] img {
    width: 130px;
    height: auto;
  }

  #solution .reveal[style*="grid-template-columns"] {
    grid-template-columns: 1fr !important;
  }

  #cost-comparison .reveal[style*="grid-template-columns"] {
    grid-template-columns: 1fr !important;
  }

  .hero-content .pre {
    font-size: 0.78rem;
    padding: 4px 10px;
  }

  .nav-inner img[alt="DH"],
  .nav-inner img[alt=""] {
    display: none !important;
  }

  .nav-sep {
    display: none !important;
  }
}

/* ─── GO4AI-STYLE GPU CARDS ─── */
.hw-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 36px;
  max-width: 1200px;
  margin-left: auto;
  margin-right: auto;
}

.hw-card {
  background: var(--surface-card);
  border-radius: 12px;
  border: 1px solid var(--border);
  padding: 18px 28px;
  display: flex;
  flex-direction: column;
  transition: transform 0.25s, box-shadow 0.25s;
}

.hw-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.08);
}

.hw-card .badge {
  display: inline-block;
  font-size: 0.62rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 3.5px 10px;
  border-radius: 20px;
  margin-bottom: 6px;
  align-self: flex-start;
}

.hw-card .badge-pop {
  background: rgba(16, 185, 129, 0.08);
  color: #10b981;
}

.hw-card .badge-new {
  background: rgba(0, 188, 212, 0.08);
  color: #0097a7;
}

.hw-card .badge-soon {
  background: rgba(107, 122, 148, 0.06);
  color: #6b7a94;
}

.hw-card .badge-value {
  background: rgba(245, 158, 11, 0.08);
  color: #d97706;
}

.hw-card h3 {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--text);
  margin: 0 0 3px;
  line-height: 1.25;
}

.hw-card .sub {
  font-size: 0.82rem;
  color: var(--text-secondary);
  margin: 0;
}

.hw-divider {
  height: 1px;
  background: var(--border);
  margin: 12px 0;
}

.hw-specs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

.hw-specs .sp {
  background: #edf0f4;
  border-radius: 10px;
  padding: 10px 13px;
}

[data-theme="dark"] .hw-specs .sp {
  background: rgba(255, 255, 255, 0.06);
}

.hw-specs .sl {
  font-size: 0.6rem;
  font-weight: 400;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 2px;
}

.hw-specs .sv {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text);
}

.hw-specs .sp:last-child .sv {
  font-size: 0.72rem;
  white-space: nowrap;
}

.hw-foot {
  margin-top: auto;
}

.hw-foot .price {
  display: flex;
  align-items: baseline;
  gap: 4px;
  margin-bottom: 18px;
}

.hw-foot .price .am {
  font-size: 2rem;
  font-weight: 800;
  color: var(--text);
  line-height: 1.2;
}

.hw-foot .price .per {
  font-size: 0.82rem;
  color: var(--text-secondary);
}

.hw-foot .btn-pri {
  display: block;
  width: 100%;
  text-align: center;
  background: linear-gradient(135deg, #1d4ed8, #2563eb);
  color: #fff;
  border: none;
  border-radius: 6px;
  padding: 11.5px;
  font-weight: 700;
  font-size: 0.9rem;
  font-family: var(--font);
  text-decoration: none;
  cursor: pointer;
  transition: all 0.25s;
}

.hw-foot .btn-pri:hover {
  background: linear-gradient(135deg, #1e40af, #1d4ed8);
  box-shadow: 0 4px 16px rgba(37, 99, 235, 0.35);
  transform: translateY(-1px);
}

.nav-sep {
  color: #cbd5e1;
  font-size: 1.1rem;
  margin: 0 10px;
  user-select: none;
}

/* ─── UTILITY CLASSES ─── */
.flex {
  display: flex;
}

.flex-wrap {
  display: flex;
  flex-wrap: wrap;
}

.flex-center {
  display: flex;
  align-items: center;
}

.flex-between {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.inline-flex-center {
  display: inline-flex;
  align-items: center;
}

.gap-6 {
  gap: 6px;
}

.gap-8 {
  gap: 8px;
}

.gap-10 {
  gap: 10px;
}

.gap-16 {
  gap: 16px;
}

.gap-24 {
  gap: 24px;
}

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

.text-white {
  color: #fff;
}

.text-muted {
  color: var(--text-muted);
}

.text-secondary {
  color: var(--text-secondary);
}

.fw-500 {
  font-weight: 500;
}

.fw-600 {
  font-weight: 600;
}

.fs-sm {
  font-size: 0.78rem;
}

.fs-base {
  font-size: 0.86rem;
}

.fs-body {
  font-size: 0.88rem;
}

.fs-md {
  font-size: 0.92rem;
}

.flex-shrink-0 {
  flex-shrink: 0;
}

.flex-1 {
  flex: 1;
}

.mb-6 {
  margin-bottom: 6px;
}

.mb-8 {
  margin-bottom: 8px;
}

.mb-12 {
  margin-bottom: 12px;
}

.mb-14 {
  margin-bottom: 14px;
}

.mb-16 {
  margin-bottom: 16px;
}

.mb-20 {
  margin-bottom: 20px;
}

.mb-24 {
  margin-bottom: 24px;
}

.mb-28 {
  margin-bottom: 28px;
}

.mb-32 {
  margin-bottom: 32px;
}

.mb-36 {
  margin-bottom: 36px;
}

.mt-8 {
  margin-top: 8px;
}

.mt-12 {
  margin-top: 12px;
}

.mt-16 {
  margin-top: 16px;
}

.mt-20 {
  margin-top: 20px;
}

.mt-24 {
  margin-top: 24px;
}

.mt-36 {
  margin-top: 36px;
}

.mx-auto {
  margin-left: auto;
  margin-right: auto;
}

.wsnw {
  white-space: nowrap;
}

.rounded-full {
  border-radius: 9999px;
}

.bg-card-1 {
  background: var(--surface-card) url("data:image/svg+xml,%3Csvg width='400' height='400' viewBox='0 0 400 400' xmlns='http://www.w3.org/2000/svg'%3E%3Ccircle cx='350' cy='50' r='150' fill='%233B82F6' opacity='0.06'/%3E%3Ccircle cx='50' cy='350' r='120' fill='%238B5CF6' opacity='0.05'/%3E%3C/svg%3E") no-repeat center/cover;
}

.bg-light-blue {
  background: #CFDCE9;
}

[data-theme="dark"] .bg-light-blue {
  background: #0f1f3a !important;
}

.contact-form {
  border-radius: var(--radius-sm);
}

.bg-card-2 {
  background: var(--surface-card) url("data:image/svg+xml,%3Csvg width='400' height='400' viewBox='0 0 400 400' xmlns='http://www.w3.org/2000/svg'%3E%3Ccircle cx='50' cy='50' r='180' fill='%238B5CF6' opacity='0.05'/%3E%3Ccircle cx='350' cy='350' r='140' fill='%230EA5E9' opacity='0.06'/%3E%3C/svg%3E") no-repeat center/cover;
}

.bg-card-3 {
  background: var(--surface-card) url("data:image/svg+xml,%3Csvg width='400' height='400' viewBox='0 0 400 400' xmlns='http://www.w3.org/2000/svg'%3E%3Ccircle cx='400' cy='200' r='160' fill='%230EA5E9' opacity='0.06'/%3E%3Ccircle cx='0' cy='400' r='150' fill='%233B82F6' opacity='0.05'/%3E%3C/svg%3E") no-repeat center/cover;
}

.bg-card-4 {
  background: var(--surface-card) url("data:image/svg+xml,%3Csvg width='400' height='400' viewBox='0 0 400 400' xmlns='http://www.w3.org/2000/svg'%3E%3Ccircle cx='50' cy='50' r='140' fill='%233B82F6' opacity='0.06'/%3E%3Ccircle cx='350' cy='350' r='160' fill='%238B5CF6' opacity='0.05'/%3E%3C/svg%3E") no-repeat center/cover;
}

.bg-card-5 {
  background: var(--surface-card) url("data:image/svg+xml,%3Csvg width='400' height='400' viewBox='0 0 400 400' xmlns='http://www.w3.org/2000/svg'%3E%3Ccircle cx='350' cy='50' r='170' fill='%238B5CF6' opacity='0.05'/%3E%3Ccircle cx='50' cy='400' r='150' fill='%230EA5E9' opacity='0.06'/%3E%3C/svg%3E") no-repeat center/cover;
}

.bg-card-6 {
  background: var(--surface-card) url("data:image/svg+xml,%3Csvg width='400' height='400' viewBox='0 0 400 400' xmlns='http://www.w3.org/2000/svg'%3E%3Ccircle cx='0' cy='200' r='180' fill='%230EA5E9' opacity='0.06'/%3E%3Ccircle cx='400' cy='50' r='140' fill='%233B82F6' opacity='0.05'/%3E%3C/svg%3E") no-repeat center/cover;
}

.bg-dark {
  background: #142958;
}

.border-none {
  border: none;
}

.list-none {
  list-style: none;
}

.text-decoration-none {
  text-decoration: none;
}

.transition-bg {
  transition: background 0.2s;
}

.cursor-pointer {
  cursor: pointer;
}

#why-choose {
  position: relative;
  overflow: hidden;
}

#why-choose::before {
  content: '';
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background: url("data:image/svg+xml,%3Csvg width='800' height='600' viewBox='0 0 800 600' xmlns='http://www.w3.org/2000/svg'%3E%3Ccircle cx='120' cy='80' r='180' fill='%233B82F6' opacity='0.04'/%3E%3Ccircle cx='680' cy='450' r='220' fill='%2360A5FA' opacity='0.03'/%3E%3Cellipse cx='400' cy='300' rx='350' ry='200' fill='%238B5CF6' opacity='0.02'/%3E%3Ccircle cx='650' cy='120' r='100' fill='%233B82F6' opacity='0.05'/%3E%3Ccircle cx='50' cy='520' r='130' fill='%2360A5FA' opacity='0.04'/%3E%3C/svg%3E") no-repeat center/cover;
}

#why-choose .container {
  position: relative;
  z-index: 1;
}

#hardware {
  position: relative;
  overflow: hidden;
}

#hardware::before {
  content: '';
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background: url("data:image/svg+xml,%3Csvg width='800' height='600' viewBox='0 0 800 600' xmlns='http://www.w3.org/2000/svg'%3E%3Ccircle cx='100' cy='100' r='160' fill='%23142958' opacity='0.03'/%3E%3Ccircle cx='700' cy='500' r='200' fill='%232563EB' opacity='0.03'/%3E%3Ccircle cx='400' cy='150' r='120' fill='%23142958' opacity='0.04'/%3E%3Ccircle cx='50' cy='450' r='100' fill='%232563EB' opacity='0.03'/%3E%3Cpath d='M200,300 Q400,100 600,300 Q800,500 700,200' fill='none' stroke='%23142958' stroke-width='1' opacity='0.04'/%3E%3C/svg%3E") no-repeat center/cover;
}

#hardware .container {
  position: relative;
  z-index: 1;
}

#problem {
  position: relative;
  overflow: hidden;
}

#problem::before {
  content: '';
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background: url("data:image/svg+xml,%3Csvg width='800' height='600' viewBox='0 0 800 600' xmlns='http://www.w3.org/2000/svg'%3E%3Ccircle cx='650' cy='100' r='200' fill='%233B82F6' opacity='0.04'/%3E%3Ccircle cx='80' cy='500' r='160' fill='%2360A5FA' opacity='0.03'/%3E%3Ccircle cx='400' cy='400' r='140' fill='%238B5CF6' opacity='0.02'/%3E%3Ccircle cx='700' cy='350' r='80' fill='%233B82F6' opacity='0.05'/%3E%3C/svg%3E") no-repeat center/cover;
}

#problem .container {
  position: relative;
  z-index: 1;
}

#cost-comparison {
  position: relative;
  overflow: hidden;
}

#cost-comparison::before {
  content: '';
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background: url("data:image/svg+xml,%3Csvg width='800' height='600' viewBox='0 0 800 600' xmlns='http://www.w3.org/2000/svg'%3E%3Ccircle cx='200' cy='120' r='180' fill='%232563EB' opacity='0.03'/%3E%3Ccircle cx='650' cy='500' r='150' fill='%23142958' opacity='0.03'/%3E%3Ccircle cx='400' cy='300' r='200' fill='%238B5CF6' opacity='0.02'/%3E%3Ccircle cx='50' cy='400' r='100' fill='%232563EB' opacity='0.04'/%3E%3C/svg%3E") no-repeat center/cover;
}

#cost-comparison .container {
  position: relative;
  z-index: 1;
}

#benefits {
  position: relative;
  overflow: hidden;
}

#benefits::before {
  content: '';
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background: url("data:image/svg+xml,%3Csvg width='800' height='600' viewBox='0 0 800 600' xmlns='http://www.w3.org/2000/svg'%3E%3Ccircle cx='120' cy='450' r='200' fill='%233B82F6' opacity='0.04'/%3E%3Ccircle cx='700' cy='150' r='180' fill='%2360A5FA' opacity='0.03'/%3E%3Ccircle cx='350' cy='200' r='120' fill='%238B5CF6' opacity='0.02'/%3E%3Ccircle cx='600' cy='500' r='90' fill='%233B82F6' opacity='0.04'/%3E%3C/svg%3E") no-repeat center/cover;
}

#benefits .container {
  position: relative;
  z-index: 1;
}

#how-it-works {
  position: relative;
  overflow: hidden;
}

#how-it-works::before {
  content: '';
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background: url("data:image/svg+xml,%3Csvg width='800' height='600' viewBox='0 0 800 600' xmlns='http://www.w3.org/2000/svg'%3E%3Ccircle cx='600' cy='100' r='160' fill='%23142958' opacity='0.03'/%3E%3Ccircle cx='100' cy='500' r='180' fill='%232563EB' opacity='0.03'/%3E%3Ccircle cx='400' cy='350' r='140' fill='%238B5CF6' opacity='0.02'/%3E%3Ccircle cx='700' cy='400' r='80' fill='%23142958' opacity='0.04'/%3E%3C/svg%3E") no-repeat center/cover;
}

#how-it-works .container {
  position: relative;
  z-index: 1;
}

#faq {
  position: relative;
  overflow: hidden;
}

#faq::before {
  content: '';
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background: url("data:image/svg+xml,%3Csvg width='800' height='600' viewBox='0 0 800 600' xmlns='http://www.w3.org/2000/svg'%3E%3Ccircle cx='650' cy='80' r='200' fill='%233B82F6' opacity='0.04'/%3E%3Ccircle cx='80' cy='520' r='160' fill='%2360A5FA' opacity='0.03'/%3E%3Ccircle cx='400' cy='300' r='180' fill='%238B5CF6' opacity='0.02'/%3E%3Ccircle cx='200' cy='150' r='100' fill='%233B82F6' opacity='0.04'/%3E%3C/svg%3E") no-repeat center/cover;
}

#faq .container {
  position: relative;
  z-index: 1;
}

#contact {
  position: relative;
  overflow: hidden;
}

#contact::before {
  content: '';
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background: url("data:image/svg+xml,%3Csvg width='800' height='600' viewBox='0 0 800 600' xmlns='http://www.w3.org/2000/svg'%3E%3Ccircle cx='700' cy='100' r='200' fill='%232563EB' opacity='0.03'/%3E%3Ccircle cx='80' cy='480' r='140' fill='%23142958' opacity='0.02'/%3E%3Ccircle cx='350' cy='400' r='160' fill='%238B5CF6' opacity='0.02'/%3E%3Ccircle cx='100' cy='180' r='80' fill='%232563EB' opacity='0.04'/%3E%3C/svg%3E") no-repeat center/cover;
}

#contact .container {
  position: relative;
  z-index: 1;
}

.flag-icon {
  display: inline;
  vertical-align: middle;
  height: 1em;
  width: auto;
}

.back-to-top {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 999;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: #555555;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  transition: opacity 0.3s, visibility 0.3s, transform 0.3s;
  opacity: 0.5;
}

.back-to-top:hover {
  opacity: 0.9 !important;
  transform: translateY(-3px);
}

.back-to-top i {
  color: #fff;
  font-size: 1.1rem;
}