/* ============================================================
   Variables (compiled from SCSS)
   ============================================================ */
/* $color-bg: #F3F4F5 | $color-white: #ffffff | $color-dark: #0a0a0a */
/* $color-text: #1a1a1a | $color-text-muted: #666666 | $color-accent: #3d4fd6 */
/* $color-border: #e0e0de | $nav-height: 91px | $container-max: 1216px */

:root {
  --ds-font-serif: "Playfair Display", Georgia, "Times New Roman", serif;
  --ds-font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --ds-fw-light: 300;
  --ds-fw-regular: 400;
  --ds-fw-medium: 500;
  --ds-fw-semibold: 600;
  --ds-fw-bold: 700;
  --ds-h1-size: 72px;
  --ds-h2-size: 48px;
  --ds-h3-size: 30px;
  --ds-h1-size-mobile: 42px;
  --ds-h2-size-tablet: 36px;
  --ds-h2-size-mobile: 28px;
  --ds-blockquote-size-mobile: 17px;
  --ds-contact-subcopy-size-tablet: 30px;
  --ds-body-lg-size: 18px;
  --ds-body-md-size: 16px;
  --ds-body-sm-size: 15px;
  --ds-body-xs-size: 14px;
  --ds-caption-size: 12px;
  --ds-meta-size: 13px;
  --ds-micro-size: 11px;
  --ds-logo-size: 20px;
  --ds-contact-subcopy-size: 28px;
  --ds-metric-number-size: 64px;
  --ds-blockquote-size: 22px;

  --bg: #0d0d0f;
  --surface: #16161a;
  --border: #2a2a32;
  --accent: #e94560;
  --accent2: #f7c59f;
  --text: #e8e8ec;
  --muted: #7a7a8c;
  --error: #f2748a;
  --success: #5de07a;
  --radius: 10px;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--ds-font-sans);
  background-color: #ffffff;
  color: #1a1a1a;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

button {
  font-family: inherit;
  cursor: pointer;
}

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

.ds-h1 {
  font-family: var(--ds-font-serif);
  font-size: var(--ds-h1-size);
  font-weight: var(--ds-fw-regular);
}

.ds-h2 {
  font-family: var(--ds-font-serif);
  font-size: var(--ds-h2-size);
  font-weight: var(--ds-fw-regular);
}

.ds-h3 {
  font-family: var(--ds-font-serif);
  font-size: var(--ds-h3-size);
  font-weight: var(--ds-fw-regular);
}

.ds-contact-subcopy {
  font-size: var(--ds-contact-subcopy-size);
  font-weight: var(--ds-fw-light);
}

.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;
}

/* ============================================================
   Layout
   ============================================================ */
.container {
  max-width: 1216px;
  margin: 0 auto;
  padding: 0 32px;
}

.section-alt {
  background: #F3F4F5;
}

.section-base {
  background: #ffffff;
}

/* ============================================================
   Navigation
   ============================================================ */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: #ffffff;
  height: 91px;
  border-bottom: 1px solid #e0e0de;
}

.navbar .nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1216px;
  margin: 0 auto;
  padding: 0 32px;
  height: 100%;
}

.navbar .nav-logo {
  background: #0a0a0a;
  color: #ffffff;
  font-family: var(--ds-font-serif);
  font-weight: var(--ds-fw-bold);
  font-size: var(--ds-logo-size);
  width: 64px;
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: center;
  letter-spacing: 0.05em;
  flex-shrink: 0;
}

.navbar .nav-logo img {
  max-width: 100%;
  max-height: 100%;
  width: auto;
  height: auto;
  object-fit: contain;
}

.navbar .menu-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border: 1px solid #e0e0de;
  background: #ffffff;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
  margin-left: auto;
}

.navbar .menu-toggle span {
  width: 18px;
  height: 2px;
  background: #0a0a0a;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.navbar.menu-open .menu-toggle span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.navbar.menu-open .menu-toggle span:nth-child(2) {
  opacity: 0;
}

.navbar.menu-open .menu-toggle span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.navbar .nav-links {
  display: flex;
  list-style: none;
  gap: 48px;
  margin-left: auto;
}

.navbar .nav-links li:nth-child(3) {
  display: none;
}

.navbar .nav-links .nav-contact-link {
  display: none;
}

.navbar .nav-links li a {
  font-size: var(--ds-body-md-size);
  color: #666666;
  transition: color 0.2s;
  position: relative;
  padding-bottom: 4px;
}

.navbar .nav-links li a.active {
  color: #a5173f;
  font-weight: var(--ds-fw-medium);
}

.navbar .nav-links li a.active::after {
  content: "";
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 100%;
  height: 2px;
  background: #a5173f;
}

.navbar .nav-links li a:hover:not(.active) {
  color: #1a1a1a;
}

.navbar .btn-cta {
  display: inline-flex;
  align-items: center;
  padding: 12px 32px;
  background: #0a0a0a;
  color: #ffffff;
  font-size: var(--ds-body-xs-size);
  font-weight: var(--ds-fw-semibold);
  letter-spacing: 0.08em;
  transition: background-color 0.2s ease;
  flex-shrink: 0;
  margin-left: 48px;
}

.navbar .btn-cta:hover {
  background-color: #a5173f;
}

.navbar .btn-cta.active {
  background-color: #a5173f;
}

/* ============================================================
   Hero Section
   ============================================================ */
.hero {
  position: relative;
  overflow: hidden;
  height: 600px;
}

.hero .hero-content {
  position: relative;
  z-index: 2;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  padding: 150px 52px 150px 0;
  max-width: 50%;
}

.hero h1 {
  font-family: var(--ds-font-serif);
  font-size: var(--ds-h1-size);
  font-weight: var(--ds-fw-regular);
  line-height: 1.1;
  color: #1a1a1a;
}

.hero h1 em {
  color: #a5173f;
}

.hero-subtitle {
  margin-top: 24px;
  font-size: var(--ds-body-lg-size);
  line-height: 1.8;
  color: #666666;
  max-width: 620px;
}

.hero h1 em {
  font-style: italic;
}

.hero .hero-decorator {
  width: 140px;
  height: 140px;
  border: 1px solid #e0e0de;
  position: absolute;
  bottom: 48px;
  left: 0;
  opacity: 0.5;
  border-radius: 2px;
}

.hero .hero-image {
  position: absolute;
  right: 0;
  top: 0;
  bottom: 0;
  width: 57%;
}

.hero .hero-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
}

.hero .hero-image .img-placeholder {
  width: 100%;
  height: 100%;
  background: #0a0a0a;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--ds-micro-size);
  letter-spacing: 0.15em;
  color: rgba(255, 255, 255, 0.15);
  font-weight: var(--ds-fw-semibold);
}

/* ============================================================
   Strategy Section
   ============================================================ */
.strategy {
  padding: 120px 0 80px;
}

.strategy .strategy-content {
  display: flex;
  align-items: flex-start;
  gap: 80px;
  margin-bottom: 80px;
}

.strategy .strategy-text {
  flex: 1;
}

.strategy .strategy-text h2 {
  font-family: var(--ds-font-serif);
  font-size: var(--ds-h2-size);
  font-weight: var(--ds-fw-regular);
  line-height: 1.2;
  color: #1a1a1a;
  margin-bottom: 40px;
  max-width: 520px;
}

.strategy blockquote {
  border-left: 6px solid #a5173f;
  padding-left: 26px;
  margin: 0 0 32px;
}

.strategy blockquote p {
  font-family: var(--ds-font-serif);
  font-style: italic;
  font-size: var(--ds-blockquote-size);
  color: #333333;
  line-height: 1.5;
  margin: 0;
  max-width: 720px;
}
.strategy .strategy-metric {
  flex-shrink: 0;
  padding-top: 32px;
}

.strategy .metric-box {
  background: #0a0a0a;
  color: #ffffff;
  width: 280px;
  height: 240px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.strategy .metric-box .metric-number {
  font-family: var(--ds-font-serif);
  font-size: var(--ds-metric-number-size);
  font-weight: var(--ds-fw-bold);
  line-height: 1;
}

.strategy .metric-box .metric-label {
  font-size: var(--ds-logo-size);
  font-weight: var(--ds-fw-semibold);
  letter-spacing: 0.04em;
  margin-top: 12px;
  color: rgba(255, 255, 255, 0.6);
}

.strategy .metric-box .metric-sub-label {
  font-size: var(--ds-caption-size);
  font-weight: var(--ds-fw-medium);
  letter-spacing: 0.08em;
  margin-top: 6px;
  color: rgba(255, 255, 255, 0.7);
}

.strategy .about-text {
  max-width: 680px;
  margin-top: 40px;
}

.strategy .about-text p {
  font-size: var(--ds-body-md-size);
  color: #666666;
  line-height: 1.85;
  margin-bottom: 24px;
}

.strategy .about-text p:last-child {
  margin-bottom: 0;
}

/* ============================================================
   Areas of Expertise Section
   ============================================================ */
.areas-expertise {
  padding: 100px 0;
}

.areas-expertise .section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 56px;
}

.areas-expertise .section-header h2 {
  font-family: var(--ds-font-serif);
  font-size: var(--ds-h2-size);
  font-weight: var(--ds-fw-regular);
  color: #1a1a1a;
}

.areas-expertise .filter-tabs {
  display: flex;
  gap: 10px;
}

.areas-expertise .filter-tabs .tab {
  padding: 8px 20px;
  border: 1px solid #e0e0de;
  background: transparent;
  font-size: var(--ds-meta-size);
  color: #666666;
  cursor: pointer;
  transition: all 0.2s;
  line-height: 1.4;
}

.areas-expertise .filter-tabs .tab.active,
.areas-expertise .filter-tabs .tab:hover {
  background: #0a0a0a;
  color: #ffffff;
  border-color: #0a0a0a;
}

.areas-expertise .services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border: 1px solid #e0e0de;
}

.areas-expertise .services-grid:not(:last-child) {
  border-bottom: none;
}

.areas-expertise .service-card {
  padding: 64px;
  border-right: 1px solid #e0e0de;
  background: #ffffff;
  transition: background-color 0.25s ease, transform 0.25s ease, box-shadow 0.25s ease;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.areas-expertise .service-card:hover {
  background-color: #a5173f;
  transform: translateY(-6px);
  box-shadow: 0 24px 45px rgba(165, 23, 63, 0.18);
}

.areas-expertise .service-card:hover .service-icon-wrap {
  background: rgba(255, 255, 255, 0.2);
}

.areas-expertise .service-card:hover .service-icon-wrap svg {
  stroke: #ffffff;
}

.areas-expertise .service-card:hover h3,
.areas-expertise .service-card:hover p {
  color: #ffffff;
}

.areas-expertise .service-card:last-child {
  border-right: none;
}

.areas-expertise .service-card.dark {
  background: #0a0a0a;
}
.areas-expertise .service-card.dark .service-icon-wrap {
  background: rgba(255, 255, 255, 0.1);
}

.areas-expertise .service-card.dark .service-icon-wrap svg {
  stroke: rgba(255, 255, 255, 0.85);
}

.areas-expertise .service-card.dark h3 {
  color: #ffffff;
}

.areas-expertise .service-card.dark p {
  color: rgba(255, 255, 255, 0.5);
}

.areas-expertise .service-card .service-icon-wrap {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  overflow: hidden;
  background: #efefef;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 36px;
}

.areas-expertise .service-card .service-icon-wrap svg {
  width: 24px;
  height: 24px;
  stroke: #1a1a1a;
  fill: none;
  stroke-width: 1.5;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.areas-expertise .service-card .service-icon-wrap .icon-image {
  width: 24px;
  height: 24px;
  object-fit: contain;
  display: block;
  filter: brightness(0) saturate(100%);
  transition: filter 0.25s ease;
}

.areas-expertise .service-card:hover .service-icon-wrap .icon-image {
  filter: brightness(0) saturate(100%) invert(1);
}

.areas-expertise .service-card.dark .service-icon-wrap .icon-image {
  filter: brightness(0) saturate(100%) invert(1);
}

.areas-expertise .service-card h3 {
  font-family: var(--ds-font-serif);
  font-size: var(--ds-h3-size);
  font-weight: var(--ds-fw-regular);
  color: #1a1a1a;
  margin-bottom: 16px;
}

.areas-expertise .service-card p {
  font-size: var(--ds-body-sm-size);
  color: #666666;
  line-height: 1.75;
  margin-bottom: 20px;
}

/* ============================================================
   Projects Section
   ============================================================ */
.projects {
  display: none;
  padding: 120px 0;
}

.projects .section-title {
  font-family: var(--ds-font-serif);
  font-size: var(--ds-h2-size);
  font-weight: var(--ds-fw-regular);
  text-align: left;
  margin-bottom: 80px;
  color: #1a1a1a;
}

.projects .project {
  display: grid;
  grid-template-columns: 57% 43%;
  align-items: center;
  margin-bottom: 120px;
}

.projects .project:last-child {
  margin-bottom: 0;
}

.projects .project.reverse {
  grid-template-columns: 43% 57%;
}

.projects .project-image {
  overflow: hidden;
  position: relative;
}

.projects .project-image img {
  width: 100%;
  height: 392px;
  object-fit: cover;
  display: none;
}

.projects .project-image .img-placeholder {
  width: 100%;
  height: 392px;
  display: flex;
  align-items: flex-end;
  padding: 24px;
  font-size: var(--ds-micro-size);
  letter-spacing: 0.15em;
  font-weight: var(--ds-fw-semibold);
  color: rgba(255, 255, 255, 0.3);
}

.projects .project-image .img-placeholder.dark {
  background: #0d1117;
}

.projects .project-image .img-placeholder.teal {
  background: #0a2535;
}

.projects .project-image .img-placeholder.navy {
  background: #071828;
}

.projects .project-info {
  padding: 0 64px;
}

.projects .project-info h3 {
  font-family: var(--ds-font-serif);
  font-size: var(--ds-h3-size);
  font-weight: var(--ds-fw-regular);
  color: #1a1a1a;
  margin-bottom: 16px;
}

.projects .project-info .project-desc {
  font-size: var(--ds-body-md-size);
  color: #666666;
  line-height: 1.75;
  margin-bottom: 28px;
}

.projects .project-info .project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 32px;
}

.projects .project-info .project-tags .tag {
  font-size: var(--ds-micro-size);
  font-weight: var(--ds-fw-semibold);
  letter-spacing: 0.08em;
  padding: 5px 14px;
  border: 1px solid #e0e0de;
  color: #666666;
}

.projects .project-info .project-link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: var(--ds-meta-size);
  font-weight: var(--ds-fw-medium);
  letter-spacing: 0.05em;
  color: #1a1a1a;
  transition: gap 0.2s;
}

.projects .project-info .project-link:hover {
  gap: 10px;
}

/* ============================================================
  Collaborations Section
   ============================================================ */
.trust-strip {
  padding: 88px 0;
  background: linear-gradient(180deg, #eef3f4 0%, #e8edef 100%);
}

.trust-strip .trust-viewport {
  overflow: visible;
}

.trust-strip .trust-track {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 18px;
  width: 100%;
}

.trust-strip .trust-item {
  padding: 0;
}

.trust-strip .trust-badge {
  min-height: 96px;
  padding: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #ffffff;
  border: 1px solid #dfe5e7;
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.trust-strip .trust-badge img {
  width: 100%;
  max-width: 100%;
  max-height: 64px;
  object-fit: contain;
}

.trust-strip .trust-item:hover .trust-badge {
  transform: translateY(-2px);
  border-color: #cfd7da;
}

/* ============================================================
   Contact Section
   ============================================================ */
.contact {
  padding: 100px 0 120px;
  background: #ffffff;
}

.trust-strip + .contact {
  padding-top: 56px;
  border-top: 1px solid #e0e0de;
}

.contact .section-title {
  font-family: var(--ds-font-serif);
  font-size: var(--ds-h2-size);
  font-weight: var(--ds-fw-regular);
  text-align: left;
  margin-bottom: 26px;
  color: #1a1a1a;
}

.contact .contact-content {
  display: grid;
  grid-template-columns: minmax(0, 0.46fr) minmax(0, 0.54fr);
  gap: 96px;
  align-items: start;
}

.contact .contact-cta {
  padding-top: 8px;
  text-align: left;
}

.contact .contact-cta p {
  font-family: var(--ds-font-sans);
  font-size: var(--ds-contact-subcopy-size);
  font-weight: var(--ds-fw-light);
  line-height: 1.35;
  color: #666666;
  text-align: left;
  max-width: 520px;
}

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

.contact .contact-form .form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.contact .contact-form .form-group label {
  font-size: var(--ds-body-md-size);
  font-weight: var(--ds-fw-semibold);
  letter-spacing: 0.1em;
  color: #666666;
}

.contact .contact-form .form-group input,
.contact .contact-form .form-group textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid #e0e0de;
  background: #ffffff;
  font-family: var(--ds-font-sans);
  font-size: var(--ds-body-xs-size);
  color: #1a1a1a;
  outline: none;
  transition: border-color 0.2s;
  -webkit-appearance: none;
  border-radius: 0;
}

.contact .contact-form .form-group input::placeholder,
.contact .contact-form .form-group textarea::placeholder {
  color: #b8b8b8;
}

.contact .contact-form .form-group input:focus,
.contact .contact-form .form-group textarea:focus {
  border-color: #1a1a1a;
}

.contact .contact-form .form-group textarea {
  resize: vertical;
  min-height: 110px;
  line-height: 1.6;
}

.contact .contact-form .btn-submit {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  background: #0a0a0a;
  color: #ffffff;
  font-size: var(--ds-meta-size);
  font-weight: var(--ds-fw-semibold);
  letter-spacing: 0.08em;
  border: 1px solid #0a0a0a;
  cursor: pointer;
  align-self: flex-start;
  transition: background-color 0.2s ease, border-color 0.2s ease;
}

.contact .contact-form .btn-submit:hover {
  background-color: #a5173f;
  border-color: #a5173f;
}

/* ============================================================
   Footer
   ============================================================ */
.footer {
  padding: 48px 0;
  background: #0a0a0a;
  border-top: 1px solid rgba(255, 255, 255, 0.2);
  text-align: center;
}

.footer p {
  font-size: var(--ds-body-xs-size);
  color: #ffffff;
  letter-spacing: 0.05em;
}

.back-to-top-wrap {
  display: flex;
  justify-content: flex-end;
  max-width: 1216px;
  margin: 0 auto;
  padding: 0 32px 40px;
  background: #ffffff;
}

.back-to-top {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  border: 1px solid #0a0a0a;
  background: #ffffff;
  color: #0a0a0a;
  font-family: var(--ds-font-sans);
  font-size: 26px;
  font-weight: var(--ds-fw-semibold);
  line-height: 1;
  box-shadow: 0 12px 30px rgba(10, 10, 10, 0.08);
  transition: background-color 0.2s ease, color 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
}

.back-to-top:hover {
  background: #a5173f;
  border-color: #a5173f;
  color: #ffffff;
  transform: translateY(-2px);
}

/* Per-field error state */
.form-group.has-error input,
.form-group.has-error textarea {
  border-color: var(--error);
  box-shadow: 0 0 0 3px rgba(242, 116, 138, 0.10);
}

.field-error {
  display: none;
  margin-top: 6px;
  font-size: 12.5px;
  color: var(--error);
  line-height: 1.4;
  animation: fadeIn 0.2s ease both;
}

.form-group.has-error .field-error { display: block; }

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(-2px); }
  to   { opacity: 1; transform: translateY(0); }
}

.btn-submit:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.spinner {
  width: 16px; height: 16px;
  border: 2px solid rgba(255,255,255,0.3);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  display: none;
}

@keyframes spin { to { transform: rotate(360deg); } }

/* Form-level alert — only for success or unexpected server failure */
.form-alert {
  display: none;
  margin-top: 20px;
  padding: 14px 16px;
  border-radius: var(--radius);
  font-size: 14px;
  line-height: 1.5;
  animation: fadeIn 0.3s ease both;
}

.form-alert.success {
  background: rgba(52, 199, 89, 0.1);
  border: 1px solid rgba(52, 199, 89, 0.3);
  color: var(--success);
}

.form-alert.error {
  background: rgba(233, 69, 96, 0.1);
  border: 1px solid rgba(233, 69, 96, 0.3);
  color: var(--error);
}

/* ============================================================
   Responsive — Tablet (≤900px)
   ============================================================ */
@media (max-width: 900px) {
  /* Nav */
  .navbar .nav-links {
    gap: 28px;
  }
  .navbar .btn-cta {
    margin-left: 24px;
    padding: 10px 20px;
  }

  /* Hero */
  .hero {
    height: auto;
  }
  .hero .hero-content {
    max-width: 100%;
    padding: 64px 0 280px;
  }
  .hero .hero-image {
    position: absolute;
    width: 100%;
    height: 260px;
    top: auto;
    bottom: 0;
  }

  /* Strategy */
  .strategy {
    padding: 80px 0 60px;
  }
  .strategy .strategy-content {
    flex-direction: column;
    gap: 48px;
  }
  .strategy .strategy-text h2 {
    font-size: var(--ds-h2-size-tablet);
  }
  .strategy .metric-box {
    width: 100%;
    height: 160px;
  }

  /* Collaborations */
  .trust-strip {
    padding: 64px 0;
  }
  .trust-strip .trust-track {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 14px;
  }
  .trust-strip .trust-badge {
    min-height: 88px;
  }

  /* Areas of Expertise */
  .areas-expertise {
    padding: 72px 0;
  }
  .areas-expertise .services-grid {
    grid-template-columns: 1fr 1fr;
  }
  .areas-expertise .service-card {
    padding: 40px;
  }
  .areas-expertise .service-card .service-icon-wrap {
    margin-bottom: 28px;
  }
  .areas-expertise .service-card:nth-child(2) {
    border-right: none;
  }
  .areas-expertise .service-card:nth-child(3) {
    border-right: 1px solid #e0e0de;
    border-top: 1px solid #e0e0de;
  }

  /* Contact */
  .contact {
    padding: 72px 0 80px;
  }
  .trust-strip + .contact {
    padding-top: 44px;
  }
  .contact .contact-content {
    grid-template-columns: 1fr;
    gap: 48px;
  }
  .contact .contact-cta {
    padding-top: 0;
  }
  .contact .contact-cta p {
    font-size: var(--ds-contact-subcopy-size-tablet);
  }
  .contact .section-title {
    font-size: var(--ds-h2-size-tablet);
    margin-bottom: 16px;
  }

  .back-to-top-wrap {
    padding: 0 32px 32px;
  }
}

/* ============================================================
   Responsive — Mobile (≤600px)
   ============================================================ */
@media (max-width: 600px) {
  /* Container */
  .container {
    padding: 0 20px;
  }

  /* Nav */
  .navbar {
    height: auto;
    padding: 0;
  }
  .navbar .nav-container {
    position: relative;
    min-height: 80px;
    padding: 0 20px;
    display: grid;
    grid-template-columns: auto auto;
    align-items: center;
    column-gap: 12px;
  }
  .navbar .menu-toggle {
    display: inline-flex;
  }
  .navbar .nav-links {
    display: none;
    position: absolute;
    top: calc(100% - 1px);
    left: 20px;
    right: 20px;
    margin-left: 0;
    padding: 14px 16px;
    border: 1px solid #e0e0de;
    background: #ffffff;
    flex-direction: column;
    gap: 14px;
    z-index: 140;
  }
  .navbar.menu-open .nav-links {
    display: flex;
  }
  .navbar .nav-links li a {
    display: inline-flex;
    padding-bottom: 0;
  }
  .navbar .nav-links li a.active::after {
    display: none;
  }
  .navbar .btn-cta {
    display: none;
    margin-left: 0;
    font-size: var(--ds-meta-size);
    padding: 10px 16px;
    width: 100%;
    justify-content: center;
  }
  .navbar .nav-links .nav-contact-link {
    display: list-item;
  }

  /* Hero */
  .hero {
    display: flex;
    flex-direction: column;
  }
  .hero .container {
    width: 100%;
  }
  .hero .hero-content {
    max-width: 100%;
    padding: 32px 0 48px;
  }
  .hero h1 {
    font-size: var(--ds-h1-size-mobile);
  }
  .hero-subtitle {
    font-size: var(--ds-body-sm-size);
  }
  .hero .hero-image {
    position: relative;
    right: auto;
    top: auto;
    bottom: auto;
    width: 100%;
    height: 240px;
  }

  /* Strategy */
  .strategy .strategy-text h2 {
    font-size: var(--ds-h2-size-mobile);
  }
  .strategy blockquote p {
    font-size: var(--ds-blockquote-size-mobile);
  }

  /* Collaborations */
  .trust-strip {
    padding: 48px 0;
  }
  .trust-strip .trust-track {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
  }
  .trust-strip .trust-badge {
    min-height: 76px;
    padding: 14px;
  }
  .trust-strip .trust-badge img {
    max-height: 52px;
  }

  /* Areas of Expertise */
  .areas-expertise .services-grid {
    grid-template-columns: 1fr;
  }
  .areas-expertise .service-card {
    padding: 32px 24px;
    border-right: none !important;
  }
  .areas-expertise .service-card .service-icon-wrap {
    margin-bottom: 20px;
  }
  .areas-expertise .service-card:not(:last-child) {
    border-bottom: 1px solid #e0e0de;
  }
  .areas-expertise .service-card:nth-child(3) {
    border-top: none;
  }
  .areas-expertise .section-header h2 {
    font-size: var(--ds-h2-size-mobile);
  }

  /* Contact */
  .contact .contact-cta p {
    font-size: var(--ds-contact-subcopy-size-tablet);
  }
  .trust-strip + .contact {
    padding-top: 34px;
  }
  .contact .section-title {
    font-size: var(--ds-h2-size-mobile);
    margin-bottom: 14px;
  }
  .contact .contact-form .btn-submit {
    width: 100%;
    justify-content: center;
  }

  /* Footer */
  .footer {
    padding: 32px 0;
  }

  .back-to-top-wrap {
    padding: 0 20px 28px;
  }

  .back-to-top {
    width: 52px;
    height: 52px;
    font-size: 24px;
  }
}