/* ============================================================
   Liu Nu Information Technology Co., Ltd. — Main Stylesheet
   Kunming, Yunnan, China | www.liunu.buzz
   ============================================================ */

/* --- CSS Custom Properties --------------------------------- */
:root {
  /* Core palette */
  --ink:        #0B0B1A;
  --ink-light:  #14142B;
  --ink-surface:#1C1C38;
  --teal:       #00D4AA;
  --teal-deep:  #00A88A;
  --teal-glow:  #00F0C8;
  --coral:      #FF5E5B;
  --coral-deep: #E04A48;
  --gold:       #D4A853;
  --gold-light: #E8C97A;
  --snow:       #F2EFE9;
  --mist:       #9CA0B0;
  --mist-light: #B8BCC8;
  --border-sub: #2A2A4A;
  --border-gold:#4A3A2A;

  /* Typography */
  --font-body:  'Inter', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
  --font-mono:  'JetBrains Mono', 'Fira Code', monospace;

  /* Spacing scale */
  --space-xs: 0.375rem;
  --space-sm: 0.75rem;
  --space-md: 1.25rem;
  --space-lg: 2rem;
  --space-xl: 3.25rem;
  --space-2xl: 5rem;
  --space-3xl: 8rem;

  /* Radii */
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-full: 9999px;

  /* Transitions */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
  --dur-fast: 180ms;
  --dur-base: 320ms;
  --dur-slow: 550ms;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  background: var(--ink);
  color: var(--snow);
  line-height: 1.65;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button, input, textarea, select {
  font: inherit;
  color: inherit;
  border: none;
  background: none;
  outline: none;
}
button { cursor: pointer; }

/* Selection */
::selection {
  background: var(--teal);
  color: var(--ink);
}

/* --- Utility Classes --------------------------------------- */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border: 0;
}

/* --- Typography -------------------------------------------- */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

.section-label {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--teal);
  margin-bottom: var(--space-sm);
}

.section-label::before {
  content: '';
  display: block;
  width: 28px;
  height: 2px;
  background: var(--teal);
  border-radius: 1px;
}

.section-title {
  font-size: clamp(2rem, 5vw, 3.25rem);
  margin-bottom: var(--space-md);
}

.section-subtitle {
  color: var(--mist);
  font-size: 1.1rem;
  max-width: 560px;
  line-height: 1.7;
}

/* --- Buttons ----------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.85rem 1.75rem;
  font-weight: 600;
  font-size: 0.95rem;
  border-radius: var(--radius-full);
  transition: all var(--dur-base) var(--ease-out);
  position: relative;
  overflow: hidden;
  white-space: nowrap;
}

.btn::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  opacity: 0;
  transition: opacity var(--dur-fast) var(--ease-out);
}

.btn-primary {
  background: var(--teal);
  color: var(--ink);
}
.btn-primary::after {
  background: var(--teal-glow);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 30px rgba(0,212,170,0.25); }
.btn-primary:hover::after { opacity: 0; }

.btn-coral {
  background: var(--coral);
  color: #fff;
}
.btn-coral::after { background: #FF7B78; }
.btn-coral:hover { transform: translateY(-2px); box-shadow: 0 8px 30px rgba(255,94,91,0.30); }

.btn-outline {
  border: 1.5px solid var(--border-sub);
  color: var(--snow);
}
.btn-outline:hover { border-color: var(--teal); color: var(--teal); }

.btn-gold {
  background: var(--gold);
  color: var(--ink);
  font-weight: 700;
}
.btn-gold:hover { transform: translateY(-2px); box-shadow: 0 8px 30px rgba(212,168,83,0.3); }

/* --- Header / Navigation ----------------------------------- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 0.75rem 0;
  transition: background var(--dur-base) var(--ease-out),
              box-shadow var(--dur-base) var(--ease-out),
              padding var(--dur-base) var(--ease-out);
}

.site-header.scrolled {
  background: rgba(11,11,26,0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: 0 1px 0 var(--border-sub);
  padding: 0.4rem 0;
}

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

.logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-weight: 800;
  font-size: 1.25rem;
  letter-spacing: -0.01em;
  z-index: 1001;
}

.logo-icon {
  width: 38px;
  height: 38px;
  flex-shrink: 0;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.75rem;
}

.nav-links a {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--mist-light);
  transition: color var(--dur-fast) var(--ease-out);
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--teal);
  border-radius: 1px;
  transition: width var(--dur-base) var(--ease-out);
}

.nav-links a:hover,
.nav-links a:focus-visible {
  color: var(--snow);
}
.nav-links a:hover::after,
.nav-links a:focus-visible::after {
  width: 100%;
}

.nav-cta {
  margin-left: 0.5rem;
}

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  z-index: 1001;
  padding: 0.25rem;
}

.hamburger span {
  display: block;
  width: 26px;
  height: 2px;
  background: var(--snow);
  border-radius: 1px;
  transition: all var(--dur-base) var(--ease-out);
  transform-origin: center;
}

.hamburger.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.hamburger.active span:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}
.hamburger.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* --- Hero Section ------------------------------------------ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 6rem 0 4rem;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero-bg::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 25% 40%, rgba(0,212,170,0.08) 0%, transparent 60%),
    radial-gradient(ellipse 60% 50% at 75% 60%, rgba(212,168,83,0.06) 0%, transparent 60%),
    radial-gradient(ellipse 50% 40% at 50% 20%, rgba(255,94,91,0.04) 0%, transparent 55%);
}

.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.02) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 70% 70% at 50% 50%, black 30%, transparent 70%);
  -webkit-mask-image: radial-gradient(ellipse 70% 70% at 50% 50%, black 30%, transparent 70%);
}

.hero-glow {
  position: absolute;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  filter: blur(120px);
  opacity: 0.12;
  pointer-events: none;
}

.hero-glow.teal {
  top: -200px;
  left: -100px;
  background: var(--teal);
}

.hero-glow.gold {
  bottom: -200px;
  right: -100px;
  background: var(--gold);
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 700px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 1rem;
  background: rgba(0,212,170,0.1);
  border: 1px solid rgba(0,212,170,0.25);
  border-radius: var(--radius-full);
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--teal);
  margin-bottom: var(--space-lg);
}

.hero-badge .dot {
  width: 8px;
  height: 8px;
  background: var(--teal);
  border-radius: 50%;
  animation: pulse-dot 2s ease-in-out infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(1.4); }
}

.hero-title {
  font-size: clamp(2.5rem, 7vw, 4.5rem);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -0.03em;
  margin-bottom: var(--space-md);
}

.hero-title .highlight {
  background: linear-gradient(135deg, var(--teal) 0%, var(--teal-glow) 50%, var(--gold) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-desc {
  font-size: 1.15rem;
  color: var(--mist);
  max-width: 520px;
  margin-bottom: var(--space-lg);
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.hero-visual {
  position: absolute;
  right: -40px;
  top: 50%;
  transform: translateY(-50%);
  z-index: 1;
  width: 540px;
  height: 540px;
  pointer-events: none;
}

.hero-visual .circuit {
  width: 100%;
  height: 100%;
  opacity: 0.15;
}

/* --- Services Section -------------------------------------- */
.services {
  position: relative;
  padding: var(--space-3xl) 0;
  background: var(--ink-light);
}

.services-header {
  text-align: center;
  margin-bottom: var(--space-2xl);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-lg);
}

.service-card {
  position: relative;
  background: var(--ink-surface);
  border: 1px solid var(--border-sub);
  border-radius: var(--radius-lg);
  padding: var(--space-xl) var(--space-lg);
  transition: all var(--dur-base) var(--ease-out);
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--teal), var(--gold));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--dur-slow) var(--ease-out);
}

.service-card:hover {
  border-color: var(--teal);
  transform: translateY(-6px);
  box-shadow: 0 20px 50px rgba(0,0,0,0.3), 0 0 0 1px rgba(0,212,170,0.15);
}

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

.service-icon {
  width: 52px;
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0,212,170,0.08);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-md);
  color: var(--teal);
  font-size: 1.5rem;
}

.service-card h3 {
  font-size: 1.2rem;
  margin-bottom: var(--space-sm);
}

.service-card p {
  color: var(--mist);
  font-size: 0.95rem;
  line-height: 1.65;
}

/* --- About Section ----------------------------------------- */
.about {
  padding: var(--space-3xl) 0;
  position: relative;
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-2xl);
  align-items: center;
}

.about-visual {
  position: relative;
  aspect-ratio: 1 / 1;
  max-width: 480px;
}

.about-shape {
  width: 100%;
  height: 100%;
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, var(--ink-surface), var(--ink-light));
  border: 1px solid var(--border-sub);
  position: relative;
  overflow: hidden;
}

.about-shape::after {
  content: '';
  position: absolute;
  width: 200px;
  height: 200px;
  border-radius: 50%;
  background: var(--teal);
  filter: blur(80px);
  opacity: 0.12;
  top: 30%;
  left: 30%;
}

.about-shape-inner {
  position: absolute;
  inset: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1;
}

.about-svg {
  width: 70%;
  height: 70%;
  opacity: 0.6;
}

.about-text h2 {
  margin-bottom: var(--space-md);
}

.about-text .lead {
  font-size: 1.15rem;
  color: var(--mist-light);
  margin-bottom: var(--space-md);
  line-height: 1.7;
}

.about-text .body-text {
  color: var(--mist);
  line-height: 1.75;
  margin-bottom: var(--space-lg);
}

.about-stats-row {
  display: flex;
  gap: var(--space-xl);
}

.about-stat h4 {
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--teal);
}

.about-stat span {
  font-size: 0.85rem;
  color: var(--mist);
}

/* --- Process Section --------------------------------------- */
.process {
  padding: var(--space-3xl) 0;
  background: var(--ink-light);
  position: relative;
}

.process-header {
  text-align: center;
  margin-bottom: var(--space-2xl);
}

.process-track {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-lg);
  position: relative;
}

.process-track::before {
  content: '';
  position: absolute;
  top: 36px;
  left: 12.5%;
  right: 12.5%;
  height: 2px;
  background: linear-gradient(90deg, var(--teal), var(--border-sub), var(--border-sub), var(--gold));
  z-index: 0;
}

.process-step {
  position: relative;
  z-index: 1;
  text-align: center;
}

.step-num {
  width: 72px;
  height: 72px;
  margin: 0 auto var(--space-md);
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--ink-surface);
  border: 2px solid var(--border-sub);
  border-radius: 50%;
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--teal);
  transition: all var(--dur-base) var(--ease-out);
  font-family: var(--font-mono);
}

.process-step:hover .step-num {
  border-color: var(--teal);
  box-shadow: 0 0 30px rgba(0,212,170,0.15);
  transform: scale(1.08);
}

.process-step h4 {
  font-size: 1.05rem;
  margin-bottom: var(--space-xs);
}

.process-step p {
  color: var(--mist);
  font-size: 0.9rem;
  line-height: 1.55;
}

/* --- Industries Section ------------------------------------ */
.industries {
  padding: var(--space-3xl) 0;
}

.industries-header {
  text-align: center;
  margin-bottom: var(--space-2xl);
}

.industries-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: var(--space-md);
}

.industry-tile {
  background: var(--ink-surface);
  border: 1px solid var(--border-sub);
  border-radius: var(--radius-md);
  padding: var(--space-lg) var(--space-md);
  text-align: center;
  transition: all var(--dur-base) var(--ease-out);
}

.industry-tile:hover {
  border-color: var(--gold);
  transform: translateY(-4px);
  box-shadow: 0 12px 30px rgba(0,0,0,0.25);
}

.industry-icon {
  font-size: 2rem;
  margin-bottom: var(--space-sm);
}

.industry-tile h4 {
  font-size: 0.95rem;
  font-weight: 600;
}

/* --- Stats Section ----------------------------------------- */
.stats {
  padding: var(--space-2xl) 0;
  background: var(--ink-light);
  border-top: 1px solid var(--border-sub);
  border-bottom: 1px solid var(--border-sub);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-lg);
  text-align: center;
}

.stat-item h3 {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  color: var(--teal);
  font-family: var(--font-mono);
  letter-spacing: -0.02em;
}

.stat-item .stat-suffix {
  color: var(--gold);
}

.stat-item p {
  color: var(--mist);
  font-size: 0.9rem;
  margin-top: var(--space-xs);
}

/* --- Contact Section --------------------------------------- */
.contact {
  padding: var(--space-3xl) 0;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.3fr;
  gap: var(--space-2xl);
  align-items: start;
}

.contact-info h2 {
  margin-bottom: var(--space-md);
}

.contact-info .desc {
  color: var(--mist);
  margin-bottom: var(--space-lg);
  line-height: 1.7;
}

.contact-detail {
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
  margin-bottom: var(--space-md);
}

.contact-detail .detail-icon {
  width: 40px;
  height: 40px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0,212,170,0.08);
  border-radius: var(--radius-sm);
  color: var(--teal);
  font-size: 1.1rem;
}

.contact-detail h5 {
  font-size: 0.85rem;
  color: var(--mist);
  font-weight: 500;
  margin-bottom: 2px;
}

.contact-detail span,
.contact-detail a {
  font-size: 0.95rem;
  font-weight: 500;
  transition: color var(--dur-fast) var(--ease-out);
}

.contact-detail a:hover {
  color: var(--teal);
}

/* Form */
.contact-form {
  background: var(--ink-surface);
  border: 1px solid var(--border-sub);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-md);
  margin-bottom: var(--space-md);
}

.form-group {
  margin-bottom: var(--space-md);
}

.form-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: var(--space-xs);
  color: var(--mist-light);
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 0.75rem 1rem;
  background: var(--ink-light);
  border: 1px solid var(--border-sub);
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  color: var(--snow);
  transition: border-color var(--dur-fast) var(--ease-out),
              box-shadow var(--dur-fast) var(--ease-out);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  border-color: var(--teal);
  box-shadow: 0 0 0 3px rgba(0,212,170,0.1);
}

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

.form-submit-row {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.form-feedback {
  font-size: 0.9rem;
  font-weight: 500;
  min-height: 1.5em;
}

.form-feedback.success { color: var(--teal); }
.form-feedback.error { color: var(--coral); }

/* --- CTA Section ------------------------------------------- */
.cta {
  padding: var(--space-2xl) 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 50% 60% at 50% 50%, rgba(0,212,170,0.06) 0%, transparent 70%);
}

.cta-inner {
  position: relative;
  z-index: 1;
  background: var(--ink-surface);
  border: 1px solid var(--border-sub);
  border-radius: var(--radius-lg);
  padding: var(--space-2xl) var(--space-lg);
  max-width: 720px;
  margin: 0 auto;
}

.cta-inner h2 {
  margin-bottom: var(--space-sm);
  font-size: clamp(1.6rem, 4vw, 2.4rem);
}

.cta-inner p {
  color: var(--mist);
  margin-bottom: var(--space-lg);
  font-size: 1.05rem;
}

/* --- Footer ------------------------------------------------ */
.site-footer {
  padding: var(--space-2xl) 0 var(--space-lg);
  border-top: 1px solid var(--border-sub);
  background: var(--ink);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-xl);
  margin-bottom: var(--space-xl);
}

.footer-brand .logo {
  margin-bottom: var(--space-sm);
}

.footer-brand p {
  color: var(--mist);
  font-size: 0.9rem;
  line-height: 1.6;
  max-width: 280px;
}

.footer-col h5 {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--mist-light);
  margin-bottom: var(--space-md);
}

.footer-col a {
  display: block;
  font-size: 0.9rem;
  color: var(--mist);
  padding: 0.3rem 0;
  transition: color var(--dur-fast) var(--ease-out);
}

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

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: var(--space-lg);
  border-top: 1px solid var(--border-sub);
  font-size: 0.85rem;
  color: var(--mist);
}

.footer-bottom a {
  color: var(--mist-light);
  transition: color var(--dur-fast) var(--ease-out);
}

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

/* --- Animations -------------------------------------------- */
.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s var(--ease-out), transform 0.7s var(--ease-out);
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* --- Mobile Responsive ------------------------------------- */
@media (max-width: 1024px) {
  .hero-visual { display: none; }
  .process-track { grid-template-columns: repeat(2, 1fr); }
  .process-track::before { display: none; }

  .about-grid {
    grid-template-columns: 1fr;
  }
  .about-visual {
    max-width: 300px;
    margin: 0 auto;
  }

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

@media (max-width: 768px) {
  .hamburger { display: flex; }

  .nav-links {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    flex-direction: column;
    background: var(--ink-light);
    padding: 6rem var(--space-lg) var(--space-lg);
    gap: 1.25rem;
    transition: right var(--dur-base) var(--ease-out);
    border-left: 1px solid var(--border-sub);
  }

  .nav-links.open { right: 0; }

  .hero {
    min-height: auto;
    padding: 7rem 0 4rem;
  }

  .hero-title {
    font-size: clamp(2rem, 8vw, 3rem);
  }

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

  .process-track {
    grid-template-columns: 1fr;
  }

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

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

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

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

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

  .footer-bottom {
    flex-direction: column;
    gap: var(--space-sm);
    text-align: center;
  }
}

@media (max-width: 480px) {
  .container { padding: 0 var(--space-md); }

  .hero-actions {
    flex-direction: column;
  }

  .hero-actions .btn {
    justify-content: center;
  }

  .about-stats-row {
    flex-direction: column;
    gap: var(--space-md);
  }

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

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

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