/* ==========================================================================
   RST Rental — Computer Systems Design & Related Services
   Premium Operational-Tech Consultancy Stylesheet
   ========================================================================== */

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  font-size: 16px;
  line-height: 1.65;
  color: #F1EFE9;
  background-color: #0B171F;
  overflow-x: hidden;
}

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

a {
  text-decoration: none;
  color: inherit;
  transition: color 0.25s ease;
}

ul, ol {
  list-style: none;
}

address {
  font-style: normal;
}

button {
  cursor: pointer;
  border: none;
  background: none;
  font-family: inherit;
  font-size: inherit;
  color: inherit;
}

input, select, textarea {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
}

::selection {
  background: #E85D2A;
  color: #F1EFE9;
}

/* --------------------------------------------------------------------------
   1. Utility Classes
   -------------------------------------------------------------------------- */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 32px;
}

.section-padding {
  padding: 112px 0;
}

.section-alt {
  background-color: #122634;
}

.section-header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 64px;
}

.section-eyebrow {
  display: inline-block;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: #E85D2A;
  margin-bottom: 16px;
}

.section-title {
  font-size: 42px;
  font-weight: 700;
  line-height: 1.18;
  color: #F1EFE9;
  margin-bottom: 20px;
  letter-spacing: -0.02em;
}

.section-description {
  font-size: 18px;
  line-height: 1.7;
  color: #8FA3A8;
  max-width: 620px;
  margin: 0 auto;
}

/* --------------------------------------------------------------------------
   2. Buttons
   -------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  font-size: 15px;
  border-radius: 8px;
  transition: all 0.25s ease;
  white-space: nowrap;
  cursor: pointer;
  border: 2px solid transparent;
  letter-spacing: 0.01em;
}

.btn-primary {
  background-color: #E85D2A;
  color: #F1EFE9;
  border-color: #E85D2A;
}

.btn-primary:hover {
  background-color: #D44F1E;
  border-color: #D44F1E;
  box-shadow: 0 6px 24px rgba(232, 93, 42, 0.35);
  transform: translateY(-1px);
}

.btn-primary:active {
  transform: translateY(0);
  box-shadow: 0 2px 8px rgba(232, 93, 42, 0.3);
}

.btn-outline {
  background-color: transparent;
  color: #F1EFE9;
  border-color: rgba(241, 239, 233, 0.25);
}

.btn-outline:hover {
  border-color: #F1EFE9;
  background-color: rgba(241, 239, 233, 0.06);
  transform: translateY(-1px);
}

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

.btn-lg {
  padding: 16px 36px;
  font-size: 16px;
  border-radius: 10px;
}

.btn-nav {
  padding: 12px 28px;
  font-size: 14px;
  border-radius: 8px;
}

.btn-submit {
  padding: 16px 40px;
  font-size: 16px;
  border-radius: 10px;
  width: auto;
}

/* --------------------------------------------------------------------------
   3. Site Header — Sticky
   -------------------------------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background-color: #07111A;
  border-bottom: 1px solid rgba(241, 239, 233, 0.06);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: background-color 0.3s ease, box-shadow 0.3s ease;
}

.site-header.scrolled {
  background-color: rgba(7, 17, 26, 0.97);
  box-shadow: 0 4px 32px rgba(0, 0, 0, 0.4);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 32px;
  height: 76px;
}

/* --- Logo --- */
.logo {
  display: flex;
  align-items: baseline;
  gap: 2px;
  flex-shrink: 0;
}

.logo-mark {
  font-size: 26px;
  font-weight: 800;
  color: #E85D2A;
  letter-spacing: -0.04em;
  line-height: 1;
}

.logo-text {
  font-size: 20px;
  font-weight: 500;
  color: #F1EFE9;
  letter-spacing: -0.01em;
  line-height: 1;
}

/* --- Navigation --- */
.main-nav {
  display: flex;
  align-items: center;
}

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

.nav-link {
  display: block;
  padding: 10px 16px;
  font-size: 14px;
  font-weight: 500;
  color: #8FA3A8;
  border-radius: 6px;
  transition: color 0.2s ease, background-color 0.2s ease;
}

.nav-link:hover {
  color: #F1EFE9;
  background-color: rgba(241, 239, 233, 0.05);
}

/* --- Mobile Toggle --- */
.mobile-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px 4px;
  z-index: 1001;
}

.toggle-bar {
  display: block;
  width: 26px;
  height: 2px;
  background-color: #F1EFE9;
  border-radius: 2px;
  transition: transform 0.3s ease, opacity 0.3s ease;
}

.mobile-toggle.active .toggle-bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.mobile-toggle.active .toggle-bar:nth-child(2) {
  opacity: 0;
}

.mobile-toggle.active .toggle-bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* --------------------------------------------------------------------------
   4. Hero Section
   -------------------------------------------------------------------------- */
.hero {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 88vh;
  padding: 120px 48px;
  max-width: 1200px;
  margin: 0 auto;
  overflow: hidden;
}

.hero-bg-pattern {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 30% 50%, rgba(46, 158, 143, 0.06) 0%, transparent 60%),
    radial-gradient(ellipse 60% 80% at 80% 40%, rgba(232, 93, 42, 0.05) 0%, transparent 60%);
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 600px;
  flex-shrink: 0;
}

.hero-eyebrow {
  display: inline-block;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: #E85D2A;
  margin-bottom: 24px;
}

.hero-title {
  font-size: 56px;
  font-weight: 800;
  line-height: 1.12;
  color: #F1EFE9;
  margin-bottom: 24px;
  letter-spacing: -0.025em;
}

.hero-subtitle {
  font-size: 18px;
  line-height: 1.75;
  color: #8FA3A8;
  margin-bottom: 40px;
  max-width: 520px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.hero-actions .btn-lg {
  padding: 18px 40px;
  font-size: 17px;
  border-radius: 10px;
}

/* --- Hero Visual (decorative nodes & lines) --- */
.hero-visual {
  position: relative;
  z-index: 1;
  flex-shrink: 0;
  width: 440px;
  height: 440px;
}

.hero-node {
  position: absolute;
  border-radius: 50%;
}

.node-1 {
  width: 140px;
  height: 140px;
  top: 40px;
  left: 80px;
  background:
    radial-gradient(circle at 35% 35%, rgba(232, 93, 42, 0.28), transparent 70%);
  border: 2px solid rgba(232, 93, 42, 0.18);
  box-shadow: 0 0 60px rgba(232, 93, 42, 0.12);
}

.node-2 {
  width: 90px;
  height: 90px;
  top: 200px;
  right: 50px;
  background:
    radial-gradient(circle at 35% 35%, rgba(46, 158, 143, 0.28), transparent 70%);
  border: 2px solid rgba(46, 158, 143, 0.18);
  box-shadow: 0 0 50px rgba(46, 158, 143, 0.12);
}

.node-3 {
  width: 110px;
  height: 110px;
  bottom: 60px;
  left: 160px;
  background:
    radial-gradient(circle at 35% 35%, rgba(241, 239, 233, 0.1), transparent 70%);
  border: 2px solid rgba(241, 239, 233, 0.08);
  box-shadow: 0 0 40px rgba(241, 239, 233, 0.04);
}

.hero-line {
  position: absolute;
  background: linear-gradient(90deg,
    rgba(46, 158, 143, 0.3),
    rgba(232, 93, 42, 0.15),
    transparent
  );
  height: 1px;
  transform-origin: left center;
}

.line-1 {
  width: 220px;
  top: 110px;
  left: 220px;
  transform: rotate(22deg);
}

.line-2 {
  width: 180px;
  top: 180px;
  left: 120px;
  transform: rotate(-12deg);
  background: linear-gradient(90deg,
    rgba(232, 93, 42, 0.25),
    rgba(46, 158, 143, 0.12),
    transparent
  );
}

.line-3 {
  width: 260px;
  top: 290px;
  left: 60px;
  transform: rotate(6deg);
  background: linear-gradient(90deg,
    rgba(143, 163, 168, 0.2),
    transparent
  );
}

/* --------------------------------------------------------------------------
   5. Services Section
   -------------------------------------------------------------------------- */
.services {
  background-color: #122634;
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.service-card {
  background-color: #0B171F;
  border: 1px solid rgba(241, 239, 233, 0.06);
  border-radius: 16px;
  padding: 40px 32px;
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}

.service-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 20px 48px rgba(0, 0, 0, 0.35);
  border-color: rgba(46, 158, 143, 0.25);
}

.service-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 64px;
  height: 64px;
  border-radius: 14px;
  background-color: rgba(232, 93, 42, 0.1);
  border: 1px solid rgba(232, 93, 42, 0.15);
  color: #E85D2A;
  margin-bottom: 28px;
}

.service-title {
  font-size: 20px;
  font-weight: 700;
  color: #F1EFE9;
  margin-bottom: 12px;
  line-height: 1.3;
}

.service-desc {
  font-size: 15px;
  line-height: 1.7;
  color: #8FA3A8;
}

/* --------------------------------------------------------------------------
   6. About Section
   -------------------------------------------------------------------------- */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 72px;
  align-items: center;
}

.about-content {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.about-content .section-eyebrow {
  margin-bottom: 16px;
}

.about-content .section-title {
  margin-bottom: 24px;
}

.about-text {
  font-size: 16px;
  line-height: 1.75;
  color: #8FA3A8;
  margin-bottom: 16px;
}

.about-text:last-of-type {
  margin-bottom: 32px;
}

.about-meta {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  padding-top: 32px;
  border-top: 1px solid rgba(241, 239, 233, 0.08);
}

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

.meta-value {
  display: block;
  font-size: 38px;
  font-weight: 800;
  color: #E85D2A;
  line-height: 1.1;
  margin-bottom: 6px;
  letter-spacing: -0.02em;
}

.meta-label {
  display: block;
  font-size: 13px;
  font-weight: 500;
  color: #8FA3A8;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.about-visual {
  display: flex;
  justify-content: center;
}

.about-frame {
  position: relative;
  width: 440px;
  height: 440px;
  border: 1px solid rgba(46, 158, 143, 0.15);
  border-radius: 24px;
  background: linear-gradient(135deg, rgba(46, 158, 143, 0.05), rgba(232, 93, 42, 0.04));
  display: flex;
  align-items: center;
  justify-content: center;
}

.about-graphic {
  width: 260px;
  height: 260px;
  position: relative;
}

.graphic-block {
  position: absolute;
  border-radius: 12px;
}

.block-1 {
  width: 100px;
  height: 100px;
  top: 0;
  left: 0;
  background-color: rgba(232, 93, 42, 0.2);
  border: 1px solid rgba(232, 93, 42, 0.25);
}

.block-2 {
  width: 80px;
  height: 80px;
  top: 0;
  right: 0;
  background-color: rgba(46, 158, 143, 0.2);
  border: 1px solid rgba(46, 158, 143, 0.25);
}

.block-3 {
  width: 120px;
  height: 70px;
  bottom: 0;
  left: 30px;
  background-color: rgba(241, 239, 233, 0.06);
  border: 1px solid rgba(241, 239, 233, 0.08);
}

.block-4 {
  width: 70px;
  height: 120px;
  bottom: 0;
  right: 40px;
  background-color: rgba(143, 163, 168, 0.08);
  border: 1px solid rgba(143, 163, 168, 0.1);
}

/* --------------------------------------------------------------------------
   7. Process Section
   -------------------------------------------------------------------------- */
.process-timeline {
  max-width: 800px;
  margin: 0 auto;
  position: relative;
  padding-left: 60px;
}

.process-timeline::before {
  content: '';
  position: absolute;
  left: 27px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: linear-gradient(180deg,
    #E85D2A,
    rgba(232, 93, 42, 0.5),
    #2E9E8F,
    rgba(46, 158, 143, 0.3)
  );
  border-radius: 1px;
}

.process-step {
  display: flex;
  align-items: flex-start;
  gap: 28px;
  margin-bottom: 48px;
  position: relative;
}

.process-step:last-child {
  margin-bottom: 0;
}

.step-marker {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background-color: #0B171F;
  border: 2px solid #E85D2A;
  color: #E85D2A;
  font-size: 14px;
  font-weight: 800;
  letter-spacing: 0.04em;
  flex-shrink: 0;
  position: absolute;
  left: -60px;
  top: 0;
  box-shadow: 0 0 0 8px #0B171F, 0 4px 16px rgba(0, 0, 0, 0.3);
}

.step-body {
  flex: 1;
}

.step-title {
  font-size: 22px;
  font-weight: 700;
  color: #F1EFE9;
  margin-bottom: 8px;
  line-height: 1.3;
}

.step-desc {
  font-size: 15px;
  line-height: 1.7;
  color: #8FA3A8;
}

/* --------------------------------------------------------------------------
   8. Industries Section
   -------------------------------------------------------------------------- */
.industries-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.industry-card {
  background-color: #0B171F;
  border: 1px solid rgba(241, 239, 233, 0.06);
  border-radius: 16px;
  padding: 36px 32px;
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}

.industry-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.3);
  border-color: rgba(46, 158, 143, 0.22);
}

.industry-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  border-radius: 12px;
  background-color: rgba(46, 158, 143, 0.1);
  border: 1px solid rgba(46, 158, 143, 0.15);
  color: #2E9E8F;
  margin-bottom: 24px;
}

.industry-title {
  font-size: 18px;
  font-weight: 700;
  color: #F1EFE9;
  margin-bottom: 10px;
  line-height: 1.3;
}

.industry-desc {
  font-size: 14px;
  line-height: 1.7;
  color: #8FA3A8;
}

/* --------------------------------------------------------------------------
   9. Stats Section
   -------------------------------------------------------------------------- */
.stats {
  background-color: #0B171F;
  position: relative;
}

.stats::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(232, 93, 42, 0.15), transparent);
}

.stats::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(232, 93, 42, 0.15), transparent);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.stat-item {
  text-align: center;
  padding: 40px 24px;
  border-radius: 16px;
  border: 1px solid rgba(241, 239, 233, 0.05);
  background-color: rgba(18, 38, 52, 0.5);
  transition: transform 0.3s ease, border-color 0.3s ease;
}

.stat-item:hover {
  transform: translateY(-3px);
  border-color: rgba(232, 93, 42, 0.2);
}

.stat-number {
  display: block;
  font-size: 48px;
  font-weight: 800;
  color: #E85D2A;
  line-height: 1;
  margin-bottom: 10px;
  letter-spacing: -0.02em;
}

.stat-label {
  display: block;
  font-size: 14px;
  font-weight: 500;
  color: #8FA3A8;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

/* --------------------------------------------------------------------------
   10. Testimonials Section
   -------------------------------------------------------------------------- */
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.testimonial-card {
  background-color: #0B171F;
  border: 1px solid rgba(241, 239, 233, 0.06);
  border-radius: 16px;
  padding: 36px 32px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  position: relative;
}

.testimonial-card::before {
  content: '';
  position: absolute;
  top: 20px;
  left: 28px;
  font-size: 60px;
  line-height: 1;
  color: #5A3A22;
  font-family: Georgia, serif;
  pointer-events: none;
}

.testimonial-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.3);
}

.testimonial-text {
  font-size: 15px;
  line-height: 1.75;
  color: #F1EFE9;
  position: relative;
  margin-bottom: 24px;
  padding-top: 16px;
}

.testimonial-author {
  border-top: 1px solid rgba(241, 239, 233, 0.07);
  padding-top: 18px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.testimonial-author strong {
  font-size: 15px;
  font-weight: 700;
  color: #F1EFE9;
}

.testimonial-author span {
  font-size: 13px;
  color: #8FA3A8;
}

/* --------------------------------------------------------------------------
   11. Contact Section
   -------------------------------------------------------------------------- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 64px;
  align-items: start;
}

.contact-info .section-eyebrow {
  margin-bottom: 16px;
}

.contact-info .section-title {
  margin-bottom: 20px;
}

.contact-desc {
  font-size: 16px;
  line-height: 1.7;
  color: #8FA3A8;
  margin-bottom: 36px;
}

.contact-details {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.contact-detail {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.detail-label {
  font-size: 12px;
  font-weight: 700;
  color: #E85D2A;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.detail-value {
  font-size: 16px;
  color: #F1EFE9;
  line-height: 1.5;
  transition: color 0.2s ease;
}

a.detail-value:hover {
  color: #2E9E8F;
}

.contact-form {
  background-color: #0B171F;
  border: 1px solid rgba(241, 239, 233, 0.06);
  border-radius: 20px;
  padding: 44px 40px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.25);
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 24px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-bottom: 0;
}

.form-label {
  font-size: 13px;
  font-weight: 600;
  color: #F1EFE9;
  letter-spacing: 0.02em;
}

.form-input {
  width: 100%;
  padding: 14px 18px;
  background-color: #122634;
  border: 1px solid rgba(241, 239, 233, 0.1);
  border-radius: 10px;
  color: #F1EFE9;
  font-size: 15px;
  transition: border-color 0.25s ease, box-shadow 0.25s ease;
  outline: none;
}

.form-input::placeholder {
  color: #8FA3A8;
  opacity: 0.7;
}

.form-input:focus {
  border-color: #2E9E8F;
  box-shadow: 0 0 0 3px rgba(46, 158, 143, 0.15);
}

.form-select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' fill='none'%3E%3Cpath d='M1 1.5l5 5 5-5' stroke='%238FA3A8' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 18px center;
  padding-right: 48px;
  cursor: pointer;
}

.form-select option {
  background-color: #122634;
  color: #F1EFE9;
}

.form-textarea {
  resize: vertical;
  min-height: 140px;
}

.contact-form .btn-submit {
  margin-top: 8px;
}

/* --------------------------------------------------------------------------
   12. Site Footer
   -------------------------------------------------------------------------- */
.site-footer {
  background-color: #07111A;
  border-top: 1px solid rgba(241, 239, 233, 0.06);
  padding: 80px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1fr 1.2fr;
  gap: 40px;
  margin-bottom: 56px;
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.footer-logo {
  margin-bottom: 4px;
}

.footer-desc {
  font-size: 14px;
  line-height: 1.7;
  color: #8FA3A8;
}

.footer-org {
  font-size: 13px;
  font-weight: 600;
  color: #E85D2A;
  letter-spacing: 0.04em;
}

.footer-heading {
  font-size: 14px;
  font-weight: 700;
  color: #F1EFE9;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 20px;
}

.footer-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-list a {
  font-size: 14px;
  color: #8FA3A8;
  transition: color 0.2s ease;
}

.footer-list a:hover {
  color: #F1EFE9;
}

.footer-contact-list li {
  font-size: 14px;
  color: #8FA3A8;
  line-height: 1.6;
}

.footer-contact-list a {
  font-size: 14px;
  color: #8FA3A8;
}

.footer-contact-list a:hover {
  color: #F1EFE9;
}

.footer-legal-col .footer-list a {
  color: #8FA3A8;
}

.footer-legal-col .footer-list a:hover {
  color: #F1EFE9;
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 28px 0;
  border-top: 1px solid rgba(241, 239, 233, 0.06);
}

.footer-copy {
  font-size: 13px;
  color: #8FA3A8;
}

.footer-bottom-links {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
}

.footer-bottom-links a {
  color: #8FA3A8;
  transition: color 0.2s ease;
}

.footer-bottom-links a:hover {
  color: #F1EFE9;
}

.footer-separator {
  color: #3A4A52;
  user-select: none;
}

/* --------------------------------------------------------------------------
   13. Responsive — Mobile (max-width: 880px)
   -------------------------------------------------------------------------- */
@media (max-width: 880px) {
  .container {
    padding: 0 24px;
  }

  .header-inner {
    padding: 0 24px;
    height: 68px;
  }

  .main-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: #07111A;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.35s ease, visibility 0.35s ease;
    z-index: 999;
  }

  .main-nav.active {
    opacity: 1;
    visibility: visible;
  }

  .nav-list {
    flex-direction: column;
    gap: 4px;
    text-align: center;
  }

  .nav-link {
    font-size: 18px;
    padding: 14px 24px;
  }

  .header-inner > .btn-nav {
    display: none;
  }

  .mobile-toggle {
    display: flex;
  }

  .section-title {
    font-size: 32px;
  }

  .section-description {
    font-size: 16px;
  }

  .hero {
    flex-direction: column;
    padding: 80px 24px;
    min-height: auto;
    text-align: center;
  }

  .hero-content {
    max-width: 100%;
  }

  .hero-title {
    font-size: 38px;
  }

  .hero-subtitle {
    font-size: 16px;
    margin: 0 auto 36px;
  }

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

  .hero-visual {
    width: 300px;
    height: 280px;
    margin-top: 40px;
  }

  .node-1 {
    width: 90px;
    height: 90px;
    top: 20px;
    left: 40px;
  }

  .node-2 {
    width: 60px;
    height: 60px;
    top: 120px;
    right: 30px;
  }

  .node-3 {
    width: 75px;
    height: 75px;
    bottom: 30px;
    left: 80px;
  }

  .line-1 {
    width: 120px;
    top: 60px;
    left: 130px;
  }

  .line-2 {
    width: 100px;
    top: 100px;
    left: 50px;
  }

  .line-3 {
    width: 140px;
    top: 180px;
    left: 20px;
  }

  .services-grid,
  .industries-grid,
  .testimonials-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .about-grid {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .about-visual {
    order: -1;
  }

  .about-frame {
    width: 100%;
    max-width: 340px;
    height: 340px;
  }

  .about-graphic {
    width: 200px;
    height: 200px;
  }

  .block-1 {
    width: 76px;
    height: 76px;
  }

  .block-2 {
    width: 60px;
    height: 60px;
  }

  .block-3 {
    width: 90px;
    height: 52px;
  }

  .block-4 {
    width: 52px;
    height: 90px;
    right: 28px;
  }

  .about-meta {
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
  }

  .meta-value {
    font-size: 28px;
  }

  .process-timeline {
    padding-left: 48px;
  }

  .process-timeline::before {
    left: 21px;
  }

  .step-marker {
    width: 44px;
    height: 44px;
    font-size: 12px;
    left: -48px;
    box-shadow: 0 0 0 6px #0B171F, 0 3px 12px rgba(0, 0, 0, 0.3);
  }

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }

  .contact-grid {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .contact-form {
    padding: 32px 28px;
  }

  .form-row {
    grid-template-columns: 1fr;
    gap: 0;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 36px;
  }

  .footer-brand {
    grid-column: 1 / -1;
  }

  .footer-bottom {
    flex-direction: column;
    gap: 14px;
    text-align: center;
  }
}

/* --------------------------------------------------------------------------
   14. Responsive — Small Mobile (max-width: 540px)
   -------------------------------------------------------------------------- */
@media (max-width: 540px) {
  .section-padding {
    padding: 72px 0;
  }

  .section-title {
    font-size: 28px;
  }

  .hero {
    padding: 60px 20px;
  }

  .hero-title {
    font-size: 30px;
  }

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

  .hero-actions .btn-lg {
    width: 100%;
    text-align: center;
  }

  .hero-visual {
    width: 240px;
    height: 220px;
  }

  .node-1 {
    width: 64px;
    height: 64px;
    top: 10px;
    left: 20px;
  }

  .node-2 {
    width: 44px;
    height: 44px;
    top: 90px;
    right: 20px;
  }

  .node-3 {
    width: 56px;
    height: 56px;
    bottom: 20px;
    left: 50px;
  }

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

  .service-card,
  .industry-card,
  .testimonial-card {
    padding: 28px 24px;
  }

  .about-frame {
    height: 260px;
  }

  .about-graphic {
    width: 160px;
    height: 160px;
  }

  .block-1 {
    width: 60px;
    height: 60px;
  }

  .block-2 {
    width: 48px;
    height: 48px;
  }

  .block-3 {
    width: 72px;
    height: 42px;
    left: 16px;
  }

  .block-4 {
    width: 42px;
    height: 72px;
    right: 16px;
  }

  .about-meta {
    grid-template-columns: repeat(3, 1fr);
    gap: 8px;
  }

  .meta-value {
    font-size: 24px;
  }

  .meta-label {
    font-size: 11px;
  }

  .stats-grid {
    grid-template-columns: 1fr 1fr;
    gap: 12px;
  }

  .stat-number {
    font-size: 36px;
  }

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

  .footer-bottom-links {
    flex-direction: column;
    gap: 4px;
  }

  .footer-separator {
    display: none;
  }

  .contact-form {
    padding: 24px 20px;
  }
}