/* UCHU Landing - Modern Startup Design */

/* === Variables === */
:root {
  --uchu-orange: #F17D04;
  --uchu-yellow: #FAB21F;
  --uchu-orange-light: #FF9933;
  --uchu-orange-dark: #D96704;
  --bg: #ffffff;
  --surface: #fafafa;
  --border: rgba(0,0,0,.06);
  --text-primary: #1a1a1a;
  --text-secondary: #666666;
  --text-muted: #999999;
  --shadow-sm: 0 2px 8px rgba(0,0,0,.04), 0 1px 2px rgba(0,0,0,.02);
  --shadow-md: 0 8px 24px rgba(0,0,0,.06), 0 4px 8px rgba(0,0,0,.04);
  --shadow-lg: 0 20px 60px rgba(0,0,0,.08), 0 8px 24px rgba(0,0,0,.06);
  --shadow-xl: 0 32px 80px rgba(0,0,0,.12), 0 12px 32px rgba(0,0,0,.08);
}

[data-theme="dark"] {
  --bg: #0a0a0a;
  --surface: #161616;
  --border: rgba(255,255,255,.08);
  --text-primary: #f5f5f5;
  --text-secondary: #a0a0a0;
  --text-muted: #666666;
  --shadow-sm: 0 2px 8px rgba(0,0,0,.3), 0 1px 2px rgba(0,0,0,.2);
  --shadow-md: 0 8px 24px rgba(0,0,0,.4), 0 4px 8px rgba(0,0,0,.3);
  --shadow-lg: 0 20px 60px rgba(0,0,0,.5), 0 8px 24px rgba(0,0,0,.4);
  --shadow-xl: 0 32px 80px rgba(0,0,0,.6), 0 12px 32px rgba(0,0,0,.5);
}

/* === Reset & Base === */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Open Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  font-weight: 300;
  color: var(--text-primary);
  background: var(--bg);
  line-height: 1.6;
  overflow-x: hidden;
}

/* === Typography === */
h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  line-height: 1.2;
}

h1 {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.1;
}

h2 {
  font-size: clamp(1.75rem, 3.5vw, 2.5rem);
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.15;
}

h3 {
  font-size: clamp(1.25rem, 2vw, 1.5rem);
  font-weight: 400;
}

/* === Animations === */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes float {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-10px); }
}

@keyframes shine {
  to { background-position: 200% center; }
}


@keyframes float3d {
  0%, 100% {
    transform: translateY(0px) rotateX(0deg) rotateY(0deg);
  }
  50% {
    transform: translateY(-15px) rotateX(2deg) rotateY(2deg);
  }
}

.animate-in {
  animation: fadeInUp 0.8s cubic-bezier(0.23, 1, 0.32, 1) forwards;
  opacity: 0;
}

.animate-in.delay-1 { animation-delay: 0.15s; }
.animate-in.delay-2 { animation-delay: 0.3s; }
.animate-in.delay-3 { animation-delay: 0.45s; }
.animate-in.delay-4 { animation-delay: 0.6s; }

/* === Navigation === */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  backdrop-filter: blur(20px) saturate(180%);
  background: rgba(255, 255, 255, 0.8);
  border-bottom: 1px solid rgba(255, 255, 255, 0.18);
  transition: all 0.3s cubic-bezier(0.23, 1, 0.32, 1);
  box-shadow:
    0 8px 32px rgba(31, 38, 135, 0.05),
    inset 0 1px 0 rgba(255, 255, 255, 0.5);
}

[data-theme="dark"] .nav {
  background: rgba(10, 10, 10, 0.8);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow:
    0 8px 32px rgba(0, 0, 0, 0.3),
    inset 0 1px 0 rgba(255, 255, 255, 0.05);
}

.nav .wrap {
  max-width: 1400px;
  margin: 0 auto;
  padding: 1rem 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: inherit;
  transition: opacity 0.2s;
}

.brand:hover {
  opacity: 0.8;
}

.brand img {
  height: 32px;
  width: auto;
  border-radius: 6px;
}

.brand .name {
  font-size: 1.125rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.brand .accent {
  color: var(--uchu-orange);
}

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

.nav .links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.9375rem;
  font-weight: 400;
  transition: color 0.2s;
  position: relative;
}

.nav .links a:hover {
  color: var(--text-primary);
}

.nav .links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--uchu-orange);
  transition: width 0.3s ease;
}

.nav .links a:hover::after {
  width: 100%;
}

/* === Buttons === */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  border: none;
  cursor: pointer;
  background: linear-gradient(135deg, var(--uchu-orange), var(--uchu-yellow)) !important;
  color: #ffffff;
  font-weight: 600;
  padding: 0.75rem 1.5rem;
  border-radius: 12px;
  text-decoration: none;
  font-size: 0.9375rem;
  transition: all 0.4s cubic-bezier(0.23, 1, 0.32, 1);
  box-shadow:
    0 4px 12px rgba(241, 125, 4, 0.25),
    0 2px 4px rgba(0, 0, 0, 0.1),
    inset 0 -2px 0 rgba(0, 0, 0, 0.1);
  text-shadow: none;
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.3), transparent);
  opacity: 0;
  transition: opacity 0.4s cubic-bezier(0.23, 1, 0.32, 1);
}

[data-theme="dark"] .btn {
  color: #000000;
  text-shadow: none;
}

.btn:hover {
  transform: translateY(-3px) scale(1.02);
  box-shadow:
    0 8px 24px rgba(241, 125, 4, 0.35),
    0 4px 8px rgba(0, 0, 0, 0.15),
    inset 0 -2px 0 rgba(0, 0, 0, 0.15);
}

.btn:hover::before {
  opacity: 1;
}

.btn:active {
  transform: translateY(-1px) scale(0.98);
  box-shadow:
    0 2px 8px rgba(241, 125, 4, 0.3),
    inset 0 2px 4px rgba(0, 0, 0, 0.2);
}

.btn.secondary {
  background: var(--surface) !important;
  color: var(--text-primary) !important;
  border: 1px solid var(--border);
  box-shadow:
    0 2px 8px rgba(0, 0, 0, 0.04),
    inset 0 1px 0 rgba(255, 255, 255, 0.5);
}

.btn.secondary::before {
  background: linear-gradient(135deg, var(--uchu-orange), var(--uchu-yellow));
  opacity: 0;
}

.btn.secondary:hover {
  background: var(--surface) !important;
  border-color: var(--uchu-orange);
  color: var(--uchu-orange) !important;
  box-shadow:
    0 4px 16px rgba(241, 125, 4, 0.15),
    inset 0 1px 0 rgba(255, 255, 255, 0.7);
}

.btn.secondary:hover::before {
  opacity: 0.05;
}

.icon-btn {
  appearance: none;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text-primary);
  height: 36px;
  width: 36px;
  border-radius: 8px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.23, 1, 0.32, 1);
  font-size: 1.125rem;
  box-shadow: var(--shadow-sm);
  position: relative;
  overflow: hidden;
}

.icon-btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--uchu-orange), var(--uchu-yellow));
  opacity: 0;
  transition: opacity 0.3s cubic-bezier(0.23, 1, 0.32, 1);
}

.icon-btn:hover {
  background: var(--surface);
  border-color: var(--uchu-orange);
  transform: translateY(-2px) rotate(180deg);
  box-shadow:
    0 4px 12px rgba(241, 125, 4, 0.2),
    var(--shadow-sm);
}

.icon-btn:hover::before {
  opacity: 0.1;
}

/* === Hero === */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 8rem 2rem 4rem;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  background:
    radial-gradient(ellipse at 80% 20%, rgba(241, 125, 4, 0.08) 0%, transparent 50%),
    radial-gradient(ellipse at 20% 80%, rgba(250, 178, 31, 0.06) 0%, transparent 50%);
  pointer-events: none;
  z-index: 0;
}

.hero-content {
  max-width: 900px;
  text-align: center;
  position: relative;
  z-index: 1;
}

.hero h1 {
  margin-bottom: 1.5rem;
  background: linear-gradient(
    120deg,
    var(--text-primary) 0%,
    var(--text-primary) 30%,
    var(--uchu-orange) 50%,
    var(--uchu-yellow) 70%,
    var(--text-primary) 100%
  );
  background-size: 200% auto;
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: shine 8s linear infinite;
}

.hero h1 .highlight {
  background: linear-gradient(
    135deg,
    var(--uchu-orange) 0%,
    var(--uchu-yellow) 50%,
    var(--uchu-orange) 100%
  );
  background-size: 200% auto;
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  font-weight: 700;
  letter-spacing: -0.02em;
  animation: shine 6s linear infinite;
  filter: drop-shadow(0 0 20px rgba(241, 125, 4, 0.3));
}

.hero p {
  font-size: 1.25rem;
  color: var(--text-secondary);
  margin-bottom: 2.5rem;
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
  font-weight: 300;
  line-height: 1.7;
}

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

/* === Section === */
.section {
  max-width: 1400px;
  margin: 0 auto;
  padding: 6rem 2rem;
}

.section-header {
  text-align: center;
  max-width: 800px;
  margin: 0 auto 4rem;
}

.section-header h2 {
  margin-bottom: 1rem;
  background: linear-gradient(
    135deg,
    var(--text-primary) 0%,
    var(--text-primary) 60%,
    var(--uchu-orange) 100%
  );
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.section-header p {
  color: var(--text-secondary);
  font-size: 1.125rem;
  font-weight: 400;
  line-height: 1.7;
  max-width: 680px;
  margin-left: auto;
  margin-right: auto;
}

/* === Stats === */
.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 3rem;
  margin-top: 4rem;
}

.stat {
  text-align: center;
  transition: transform 0.4s cubic-bezier(0.23, 1, 0.32, 1);
}

.stat:hover {
  transform: translateY(-4px);
}

.stat-number {
  font-size: 3.5rem;
  font-weight: 700;
  background: linear-gradient(
    120deg,
    var(--uchu-orange) 0%,
    var(--uchu-yellow) 40%,
    var(--uchu-orange-light) 60%,
    var(--uchu-yellow) 80%,
    var(--uchu-orange) 100%
  );
  background-size: 300% auto;
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 0.5rem;
  letter-spacing: -0.02em;
  line-height: 1;
  animation: shine 4s linear infinite;
}

.stat-label {
  color: var(--text-secondary);
  font-size: 1rem;
  font-weight: 500;
  letter-spacing: 0.01em;
}

/* === Cards === */
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin-top: 3rem;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 2rem;
  transition: all 0.5s cubic-bezier(0.23, 1, 0.32, 1);
  position: relative;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--uchu-orange), var(--uchu-yellow));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.5s cubic-bezier(0.23, 1, 0.32, 1);
}

.card:hover::before {
  transform: scaleX(1);
}

.card:hover {
  transform: translateY(-6px);
  box-shadow:
    0 20px 60px rgba(241, 125, 4, 0.15),
    0 8px 24px rgba(0, 0, 0, 0.08);
  border-color: rgba(241, 125, 4, 0.3);
}

.card h3 {
  margin-bottom: 1rem;
  color: var(--text-primary);
  font-weight: 600;
  font-size: 1.25rem;
  line-height: 1.3;
  position: relative;
  z-index: 1;
}

.card p {
  color: var(--text-secondary);
  font-size: 0.9375rem;
  line-height: 1.7;
  position: relative;
  z-index: 1;
}

/* === Charts Section === */
.charts-section {
  background: linear-gradient(180deg, var(--bg) 0%, var(--surface) 50%, var(--bg) 100%);
  padding: 6rem 2rem;
  position: relative;
}

.charts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(500px, 1fr));
  gap: 2rem;
  max-width: 1400px;
  margin: 0 auto;
}

.chart-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 2rem;
  box-shadow:
    0 8px 24px rgba(0, 0, 0, 0.06),
    inset 0 1px 0 rgba(255, 255, 255, 0.5);
  transition: all 0.5s cubic-bezier(0.23, 1, 0.32, 1);
  backdrop-filter: blur(10px);
  position: relative;
  overflow: hidden;
}

.chart-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(241, 125, 4, 0.03), rgba(250, 178, 31, 0.03));
  opacity: 0;
  transition: opacity 0.5s cubic-bezier(0.23, 1, 0.32, 1);
}

.chart-card:hover {
  box-shadow:
    0 16px 48px rgba(241, 125, 4, 0.12),
    0 8px 24px rgba(0, 0, 0, 0.08),
    inset 0 1px 0 rgba(255, 255, 255, 0.7);
  transform: translateY(-4px);
  border-color: rgba(241, 125, 4, 0.15);
}

.chart-card:hover::before {
  opacity: 1;
}

.chart-card h3 {
  margin-bottom: 1.5rem;
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  position: relative;
  z-index: 1;
  padding-bottom: 0.75rem;
}

.chart-card h3::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 40px;
  height: 2px;
  background: linear-gradient(90deg, var(--uchu-orange), var(--uchu-yellow));
  border-radius: 2px;
}

.chart-card canvas {
  max-height: 300px !important;
  width: 100% !important;
}

/* === Steps === */
.steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
  margin-top: 3rem;
  position: relative;
}

.step {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 2rem;
  position: relative;
  transition: all 0.5s cubic-bezier(0.23, 1, 0.32, 1);
  backdrop-filter: blur(10px);
}

.step:hover {
  transform: translateY(-6px);
  box-shadow:
    0 20px 60px rgba(241, 125, 4, 0.12),
    0 8px 24px rgba(0, 0, 0, 0.08),
    inset 0 1px 0 rgba(255, 255, 255, 0.5);
  border-color: rgba(241, 125, 4, 0.2);
}

.step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--uchu-orange), var(--uchu-yellow));
  color: #fff;
  font-weight: 700;
  margin-bottom: 1rem;
  font-size: 1.25rem;
  box-shadow:
    0 4px 12px rgba(241, 125, 4, 0.3),
    inset 0 -2px 4px rgba(0, 0, 0, 0.2),
    inset 0 2px 4px rgba(255, 255, 255, 0.3);
  transition: transform 0.3s cubic-bezier(0.23, 1, 0.32, 1);
}

.step:hover .step-number {
  transform: scale(1.1) rotateY(10deg);
}

.step h3 {
  margin-bottom: 0.75rem;
}

.step p {
  color: var(--text-secondary);
  font-size: 0.9375rem;
  line-height: 1.6;
}

/* === Badges === */
.badges {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 2rem;
  justify-content: center;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.25rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 50px;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-primary);
  transition: all 0.4s cubic-bezier(0.23, 1, 0.32, 1);
  box-shadow: var(--shadow-sm);
  position: relative;
  overflow: hidden;
}

.badge::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--uchu-orange), var(--uchu-yellow));
  opacity: 0;
  transition: opacity 0.4s cubic-bezier(0.23, 1, 0.32, 1);
}

.badge:hover {
  border-color: var(--uchu-orange);
  background: rgba(241, 125, 4, 0.05);
  transform: translateY(-2px);
  box-shadow:
    0 4px 16px rgba(241, 125, 4, 0.15),
    0 2px 4px rgba(0, 0, 0, 0.08);
  color: var(--uchu-orange);
}

.badge:hover::before {
  opacity: 0.08;
}

.badge .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--uchu-orange), var(--uchu-yellow));
  box-shadow: 0 0 8px rgba(241, 125, 4, 0.4);
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.2); opacity: 0.8; }
}

/* === Feature List === */
.feature-list {
  list-style: none;
  display: grid;
  gap: 1rem;
  margin-top: 2rem;
  max-width: 600px;
}

.feature-list li {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  padding: 1rem;
  background: var(--surface);
  border-radius: 12px;
  border: 1px solid var(--border);
  transition: all 0.2s ease;
}

.feature-list li:hover {
  border-color: var(--uchu-orange);
  background: rgba(241, 125, 4, 0.03);
}

.feature-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--uchu-orange), var(--uchu-yellow));
  margin-top: 8px;
  flex-shrink: 0;
}

/* === Contact Form === */
.contact {
  max-width: 700px;
  margin: 0 auto;
}

.form {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 2.5rem;
  box-shadow: var(--shadow-md);
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

.form-field {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

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

.form-field label {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
}

.form-field input,
.form-field textarea,
.form-field select {
  appearance: none;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.875rem;
  font-family: inherit;
  font-size: 0.9375rem;
  color: var(--text-primary);
  background: var(--bg);
  transition: all 0.2s ease;
}

.form-field input:focus,
.form-field textarea:focus,
.form-field select:focus {
  outline: none;
  border-color: var(--uchu-orange);
  box-shadow:
    0 0 0 3px rgba(241, 125, 4, 0.1),
    0 2px 8px rgba(241, 125, 4, 0.15);
  transform: translateY(-1px);
}

.form-field textarea {
  min-height: 120px;
  resize: vertical;
}

.form-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-top: 1rem;
}

.hidden {
  position: absolute !important;
  left: -10000px !important;
  top: auto !important;
  width: 1px !important;
  height: 1px !important;
  overflow: hidden !important;
}

/* === Footer === */
footer {
  background: linear-gradient(180deg, var(--bg) 0%, var(--surface) 100%);
  border-top: 1px solid var(--border);
  padding: 4rem 2rem 2rem;
  position: relative;
  overflow: hidden;
}

footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--uchu-orange), var(--uchu-yellow), transparent);
  opacity: 0.3;
}

.footer-content {
  max-width: 1400px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 3rem;
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.footer-logo img {
  height: 56px;
  width: auto;
  border-radius: 8px;
  box-shadow: 0 4px 12px rgba(0,0,0,.08);
}

.footer-brand-name {
  font-size: 1.5rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--text-primary);
}

.footer-brand-name .accent {
  color: var(--uchu-orange);
}

.footer-brand p {
  color: var(--text-secondary);
  font-size: 0.9375rem;
  line-height: 1.6;
  max-width: 380px;
}

.footer-section h4 {
  font-size: 0.875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 1rem;
  color: var(--text-primary);
}

.footer-section ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.footer-section a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.9375rem;
  transition: color 0.2s;
}

.footer-section a:hover {
  color: var(--uchu-orange);
}

.footer-bottom {
  max-width: 1400px;
  margin: 0 auto;
  padding-top: 2rem;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--text-muted);
  font-size: 0.875rem;
}

/* === Responsive === */
@media (max-width: 1024px) {
  .hero {
    padding: 6rem 1.5rem 3rem;
  }

  .section {
    padding: 4rem 1.5rem;
  }

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

  .footer-content {
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
  }
}

@media (max-width: 768px) {
  .nav .links {
    gap: 1rem;
  }

  .nav .links a:not(.btn) {
    display: none;
  }

  .hero h1 {
    font-size: 2.25rem;
  }

  .hero p {
    font-size: 1.125rem;
  }

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

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

  .footer-content {
    grid-template-columns: 1fr;
  }

  .footer-logo {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.75rem;
  }

  .footer-logo img {
    height: 48px;
  }

  .footer-brand-name {
    font-size: 1.25rem;
  }

  .footer-bottom {
    flex-direction: column;
    gap: 1rem;
    text-align: center;
  }
}

/* === Utilities === */
.text-center {
  text-align: center;
}

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

.mt-1 { margin-top: 1rem; }
.mt-2 { margin-top: 2rem; }
.mt-3 { margin-top: 3rem; }
.mt-4 { margin-top: 4rem; }

.mb-1 { margin-bottom: 1rem; }
.mb-2 { margin-bottom: 2rem; }
.mb-3 { margin-bottom: 3rem; }
.mb-4 { margin-bottom: 4rem; }

/* === Clients Slider === */
.clients-section {
  padding: 4rem 0;
  background: var(--surface);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  overflow: hidden;
}

.clients-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}

.clients-title {
  text-align: center;
  font-size: 0.875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  margin-bottom: 2rem;
}

.clients-slider {
  position: relative;
  width: 100%;
  overflow: hidden;
  mask-image: linear-gradient(
    to right,
    transparent,
    black 10%,
    black 90%,
    transparent
  );
  -webkit-mask-image: linear-gradient(
    to right,
    transparent,
    black 10%,
    black 90%,
    transparent
  );
}

.clients-track {
  display: flex;
  gap: 4rem;
  animation: scroll 30s linear infinite;
  width: fit-content;
}

.clients-track:hover {
  animation-play-state: paused;
}

.client-logo {
  flex-shrink: 0;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0.5;
  transition: all 0.5s cubic-bezier(0.23, 1, 0.32, 1);
  user-select: none;
  filter: grayscale(100%) brightness(0.8);
  position: relative;
}

.client-logo::before {
  content: '';
  position: absolute;
  inset: -8px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--uchu-orange), var(--uchu-yellow));
  opacity: 0;
  filter: blur(12px);
  transition: opacity 0.5s cubic-bezier(0.23, 1, 0.32, 1);
  z-index: -1;
}

.client-logo img {
  height: 100%;
  width: auto;
  max-width: 180px;
  object-fit: contain;
  transition: transform 0.5s cubic-bezier(0.23, 1, 0.32, 1);
}

.client-logo:hover {
  opacity: 1;
  filter: grayscale(0%) brightness(1);
}

.client-logo:hover::before {
  opacity: 0.2;
}

.client-logo:hover img {
  transform: scale(1.15);
}

@keyframes scroll {
  0% {
    transform: translateX(0);
  }
  100% {
    transform: translateX(-50%);
  }
}

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

  .clients-title {
    font-size: 0.75rem;
    margin-bottom: 1.5rem;
  }

  .clients-track {
    gap: 2.5rem;
    animation-duration: 20s;
  }

  .client-logo {
    height: 45px;
  }

  .client-logo img {
    max-width: 140px;
  }
}