/* ===== CSS RESET & BASE ===== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --primary: #1a1a2e;
  --accent: #c8a96e;
  --accent-light: #e8c98e;
  --white: #ffffff;
  --gray-100: #f8f8f8;
  --gray-200: #eeeeee;
  --gray-400: #999999;
  --gray-600: #666666;
  --gray-800: #333333;
  --text: #2c2c2c;
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 20px rgba(0,0,0,0.12);
  --shadow-lg: 0 8px 40px rgba(0,0,0,0.16);
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --transition: 0.3s ease;
  --navbar-h: 100px;
}

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

body {
  font-family: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", sans-serif;
  color: var(--text);
  line-height: 1.7;
  overflow-x: hidden;
  background: #fff;
}

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

a {
  text-decoration: none;
  color: inherit;
  transition: var(--transition);
}

ul { list-style: none; }

/* ===== CONTAINER ===== */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  border: 2px solid transparent;
  white-space: nowrap;
}

.btn-primary {
  background: var(--accent);
  color: var(--primary);
  border-color: var(--accent);
}
.btn-primary:hover {
  background: var(--accent-light);
  border-color: var(--accent-light);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(200, 169, 110, 0.4);
}

.btn-outline {
  background: transparent;
  color: var(--white);
  border-color: rgba(255,255,255,0.6);
}
.btn-outline:hover {
  background: rgba(255,255,255,0.15);
  border-color: var(--white);
}

.full-width { width: 100%; justify-content: center; }

/* ===== SECTION HEADERS ===== */
.section-header {
  text-align: center;
  margin-bottom: 40px;
}

.section-tag {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 3px;
  color: var(--accent);
  margin-bottom: 12px;
  text-transform: uppercase;
}

.section-header.light .section-tag {
  color: var(--accent);
}

.section-title {
  font-size: clamp(28px, 4vw, 42px);
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 16px;
  letter-spacing: -0.5px;
}

.section-header.light .section-title {
  color: var(--primary);
}

.section-line {
  width: 60px;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--accent-light));
  margin: 0 auto 16px;
  border-radius: 2px;
}

.section-desc {
  color: var(--gray-600);
  font-size: 16px;
  max-width: 560px;
  margin: 0 auto;
}

/* ===== NAVBAR ===== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--navbar-h);
  transition: all 0.4s ease;
  background: transparent;
}

.navbar.scrolled {
  background: rgba(26, 26, 46, 0.97);
  backdrop-filter: blur(12px);
  box-shadow: 0 2px 20px rgba(0,0,0,0.3);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.logo {
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: 14px;
  cursor: pointer;
  transition: opacity 0.3s;
}

.logo:hover {
  opacity: 0.9;
}

.logo-img {
  height: 110px;
  width: auto;
  object-fit: contain;
}

.logo-text {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.logo-zh {
  font-size: 22px;
  font-weight: 900;
  background: linear-gradient(135deg, #f0d89c 0%, #c8a96e 40%, #e8c98e 70%, #c8a96e 100%);
  background-size: 200% auto;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: 3px;
  line-height: 1.3;
}

.logo-divider {
  display: block;
  width: 32px;
  height: 1.5px;
  background: linear-gradient(90deg, var(--accent), transparent);
  border-radius: 1px;
  margin: 1px 0;
}

.logo-en {
  font-size: 8.5px;
  color: rgba(200,169,110,0.75);
  letter-spacing: 3px;
  text-transform: uppercase;
  font-weight: 500;
}

.nav-links {
  display: flex;
  gap: 36px;
}

.nav-links a {
  font-size: 14px;
  font-weight: 500;
  color: rgba(255,255,255,0.85);
  position: relative;
  padding: 4px 0;
  letter-spacing: 0.5px;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent);
  transition: width 0.3s ease;
}

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

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

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

.menu-btn span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--white);
  border-radius: 2px;
  transition: var(--transition);
}

/* ===== HERO ===== */
.hero {
  position: relative;
  min-height: auto;
  padding: calc(var(--navbar-h) + 60px) 0 80px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, #1a1a2e 0%, #16213e 40%, #0f3460 100%);
  z-index: 0;
}

.hero-bg::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: 
    radial-gradient(circle at 20% 80%, rgba(200, 169, 110, 0.15) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(200, 169, 110, 0.1) 0%, transparent 50%);
}

.hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image: 
    radial-gradient(circle at 30% 40%, rgba(200,169,110,0.08) 0%, transparent 40%),
    radial-gradient(circle at 70% 60%, rgba(200,169,110,0.05) 0%, transparent 40%);
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, rgba(26,26,46,0.6) 0%, rgba(26,26,46,0.3) 50%, rgba(26,26,46,0.7) 100%);
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 800px;
  padding: 0 24px;
}

.hero-badge {
  display: inline-block;
  padding: 6px 20px;
  background: rgba(200, 169, 110, 0.2);
  border: 1px solid rgba(200, 169, 110, 0.5);
  border-radius: 100px;
  font-size: 13px;
  color: var(--accent-light);
  letter-spacing: 2px;
  margin-bottom: 16px;
  backdrop-filter: blur(8px);
}

.hero-title {
  font-size: clamp(32px, 5vw, 60px);
  font-weight: 800;
  color: var(--white);
  line-height: 1.1;
  margin-bottom: 12px;
  letter-spacing: -0.5px;
}

.hero-subtitle {
  font-size: clamp(15px, 2vw, 20px);
  color: var(--accent-light);
  font-weight: 500;
  letter-spacing: 3px;
  margin-bottom: 12px;
}

.hero-desc {
  font-size: 15px;
  color: rgba(255,255,255,0.75);
  max-width: 600px;
  margin: 0 auto 28px;
  line-height: 1.6;
}

.hero-btns {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

.hero-scroll {
  position: absolute;
  bottom: 16px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
}

.hero-scroll span {
  display: block;
  width: 24px;
  height: 40px;
  border: 2px solid rgba(255,255,255,0.4);
  border-radius: 100px;
  position: relative;
}

.hero-scroll span::after {
  content: '';
  position: absolute;
  top: 6px;
  left: 50%;
  transform: translateX(-50%);
  width: 4px;
  height: 8px;
  background: rgba(255,255,255,0.7);
  border-radius: 4px;
  animation: scrollAnim 2s infinite;
}

@keyframes scrollAnim {
  0% { transform: translateX(-50%) translateY(0); opacity: 1; }
  100% { transform: translateX(-50%) translateY(16px); opacity: 0; }
}

/* ===== STATS BAR ===== */
.stats-bar {
  background: var(--primary);
  padding: 40px 0;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
}

.stat-item {
  text-align: center;
  padding: 20px;
  position: relative;
}

.stat-item:not(:last-child)::after {
  content: '';
  position: absolute;
  right: 0;
  top: 20%;
  height: 60%;
  width: 1px;
  background: rgba(200, 169, 110, 0.25);
}

.stat-num {
  display: block;
  font-size: 40px;
  font-weight: 800;
  color: var(--accent);
  line-height: 1.1;
  margin-bottom: 6px;
  font-family: "Arial", sans-serif;
}

.stat-num sup {
  font-size: 20px;
  vertical-align: super;
}

.stat-label {
  font-size: 13px;
  color: rgba(255,255,255,0.6);
  letter-spacing: 1px;
}

/* ===== ABOUT ===== */
.about {
  padding: 72px 0;
  background: var(--white);
}

.about-content {
  display: block;
  max-width: 860px;
  margin: 0 auto;
}

.about-lead {
  font-size: 17px;
  line-height: 1.8;
  color: var(--gray-800);
  margin-bottom: 20px;
}

.about-text p:last-of-type {
  color: var(--gray-600);
  margin-bottom: 36px;
}

.about-features {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.feature-item {
  display: flex;
  gap: 14px;
  align-items: flex-start;
}

.feature-icon {
  font-size: 24px;
  flex-shrink: 0;
  margin-top: 2px;
}

.feature-text h4 {
  font-size: 15px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 4px;
}

.feature-text p {
  font-size: 13px;
  color: var(--gray-600);
}

.about-visual {
  position: relative;
}

.about-img-main {
  border-radius: var(--radius-md);
  overflow: hidden;
  position: relative;
  aspect-ratio: 4/3;
  background: linear-gradient(135deg, #1a1a2e 0%, #0f3460 100%);
  box-shadow: var(--shadow-lg);
}

.about-img-main img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.about-img-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: linear-gradient(to top, rgba(26,26,46,0.9) 0%, transparent 100%);
  padding: 32px 24px 24px;
}

.oi-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--white);
}

.oi-sub {
  font-size: 13px;
  color: var(--accent);
  letter-spacing: 1px;
  margin-top: 4px;
}

/* ===== SERVICES ===== */
.services {
  padding: 72px 0;
  background: var(--gray-100);
}

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

.service-card {
  background: var(--white);
  border-radius: var(--radius-md);
  padding: 32px 24px;
  transition: all 0.35s ease;
  border: 1px solid var(--gray-200);
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--accent-light));
  transform: scaleX(0);
  transition: transform 0.35s ease;
  transform-origin: left;
}

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

.service-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(200, 169, 110, 0.3);
}

.service-icon {
  width: 52px;
  height: 52px;
  color: var(--accent);
  margin-bottom: 20px;
}

.service-icon svg {
  width: 100%;
  height: 100%;
}

.service-card h3 {
  font-size: 16px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 12px;
  line-height: 1.4;
}

.service-card p {
  font-size: 13px;
  color: var(--gray-600);
  line-height: 1.7;
  margin-bottom: 16px;
}

.service-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.service-tags span {
  font-size: 11px;
  padding: 3px 10px;
  background: rgba(200, 169, 110, 0.1);
  color: var(--accent);
  border-radius: 100px;
  border: 1px solid rgba(200, 169, 110, 0.3);
  font-weight: 500;
}

/* ===== INDUSTRIES ===== */
.industries {
  padding: 72px 0;
  background: var(--white);
}

.industry-tabs {
  display: flex;
  gap: 8px;
  justify-content: center;
  margin-bottom: 32px;
  flex-wrap: wrap;
}

.ind-tab {
  padding: 12px 28px;
  border: 2px solid var(--gray-200);
  background: none;
  border-radius: 100px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  color: var(--gray-600);
  font-family: inherit;
}

.ind-tab.active,
.ind-tab:hover {
  background: var(--primary);
  border-color: var(--primary);
  color: var(--white);
}

.ind-panel {
  display: none;
  animation: fadeInUp 0.4s ease;
}

.ind-panel.active {
  display: block;
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

.ind-content {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 48px;
  align-items: center;
}

.ind-text h3 {
  font-size: 24px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 8px;
}

.ind-en {
  font-size: 11px;
  letter-spacing: 2px;
  color: var(--accent);
  text-transform: uppercase;
  margin-bottom: 16px;
}

.ind-core {
  font-size: 16px;
  font-weight: 600;
  color: var(--accent);
  margin-bottom: 16px;
  padding: 8px 16px;
  background: rgba(200, 169, 110, 0.1);
  border-radius: var(--radius-sm);
  display: inline-block;
}

.ind-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.ind-list li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 15px;
  color: var(--gray-800);
}

.ind-list li::before {
  content: '';
  width: 6px;
  height: 6px;
  background: var(--accent);
  border-radius: 50%;
  flex-shrink: 0;
}

.ind-imgs {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

.ind-imgs img {
  width: 100%;
  aspect-ratio: 4/3;
  object-fit: cover;
  border-radius: var(--radius-sm);
  background: var(--gray-200);
}

/* ===== CASES ===== */
.cases {
  padding: 72px 0;
  background: var(--gray-100);
}

.cases-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  grid-template-rows: auto auto;
  gap: 20px;
}

.case-card {
  background: var(--white);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: all 0.35s ease;
  box-shadow: var(--shadow-sm);
}

.case-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}

.case-card.large {
  grid-column: span 2;
}

.case-img {
  overflow: hidden;
  aspect-ratio: 16/9;
  background: var(--gray-200);
}

.case-card.large .case-img {
  aspect-ratio: 2.2/1;
}

.case-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.case-card:hover .case-img img {
  transform: scale(1.06);
}

.case-info {
  padding: 20px;
}

.case-tag {
  font-size: 11px;
  padding: 3px 10px;
  background: rgba(200, 169, 110, 0.1);
  color: var(--accent);
  border-radius: 100px;
  font-weight: 600;
  letter-spacing: 0.5px;
  display: inline-block;
  margin-bottom: 10px;
}

.case-info h3 {
  font-size: 16px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 8px;
  line-height: 1.4;
}

.case-info p {
  font-size: 13px;
  color: var(--gray-600);
  line-height: 1.6;
}

/* ===== BRAND SERVICE ===== */
.brand-service {
  padding: 72px 0;
  background: var(--white);
}

.brand-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  margin-bottom: 40px;
}

.brand-card {
  padding: 40px 32px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, var(--primary) 0%, #16213e 100%);
  color: var(--white);
  position: relative;
  overflow: hidden;
  transition: transform 0.35s ease;
}

.brand-card:hover {
  transform: translateY(-6px);
}

.brand-card::before {
  content: '';
  position: absolute;
  top: -30px;
  right: -30px;
  width: 120px;
  height: 120px;
  border-radius: 50%;
  background: rgba(200, 169, 110, 0.1);
}

.brand-letter {
  font-size: 56px;
  font-weight: 900;
  color: var(--accent);
  line-height: 1;
  margin-bottom: 16px;
  font-family: "Arial", sans-serif;
  opacity: 0.9;
}

.brand-card h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 12px;
}

.brand-card p {
  font-size: 14px;
  color: rgba(255,255,255,0.75);
  line-height: 1.7;
}

.brand-strategy {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
  padding: 48px;
  background: var(--gray-100);
  border-radius: var(--radius-lg);
}

.bs-text h3 {
  font-size: 26px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 16px;
}

.bs-text p {
  font-size: 15px;
  color: var(--gray-600);
  line-height: 1.8;
}

.bs-img img {
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
}

/* ===== CONTACT ===== */
.contact {
  padding: 72px 0;
  background: var(--gray-100);
  position: relative;
}

.contact-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}

.contact-info h3 {
  font-size: 28px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 12px;
}

.contact-intro {
  font-size: 15px;
  color: var(--gray-600);
  margin-bottom: 36px;
  line-height: 1.7;
}

.contact-items {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.contact-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.ci-icon {
  width: 44px;
  height: 44px;
  background: var(--primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: var(--accent);
}

.ci-icon svg {
  width: 22px;
  height: 22px;
}

.ci-label {
  font-size: 12px;
  color: var(--gray-400);
  margin-bottom: 4px;
  letter-spacing: 0.5px;
}

.ci-value {
  font-size: 16px;
  font-weight: 600;
  color: var(--primary);
}

.ci-value a:hover {
  color: var(--accent);
}

/* Contact Form */
.contact-form {
  background: var(--white);
  border-radius: var(--radius-md);
  padding: 40px;
  box-shadow: var(--shadow-md);
}

.contact-form h3 {
  font-size: 22px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 28px;
}

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

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 13px 16px;
  border: 1.5px solid var(--gray-200);
  border-radius: var(--radius-sm);
  font-size: 14px;
  color: var(--text);
  background: var(--white);
  transition: border-color 0.25s;
  font-family: inherit;
  outline: none;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--accent);
}

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

.form-success {
  text-align: center;
  padding: 32px 0;
}

.success-icon {
  width: 56px;
  height: 56px;
  background: #22c55e;
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  font-weight: bold;
  margin: 0 auto 16px;
}

.form-success p {
  color: var(--gray-600);
  font-size: 16px;
}

/* ===== FOOTER ===== */
.footer {
  background: var(--primary);
  color: rgba(255,255,255,0.7);
  padding: 48px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 48px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}

.footer-brand {
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.footer-logo {
  margin-bottom: 20px;
}

.footer-logo .logo-img {
  height: 150px;
  width: auto;
  object-fit: contain;
}

.footer-brand-text {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 20px;
  align-items: center;
}

.footer-brand-text .logo-zh {
  font-size: 26px;
  font-weight: 900;
  background: linear-gradient(135deg, #f0d89c 0%, #c8a96e 40%, #e8c98e 70%, #c8a96e 100%);
  background-size: 200% auto;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: 4px;
  line-height: 1.3;
}

.footer-brand-text .logo-en {
  font-size: 12px;
  color: rgba(200,169,110,0.85);
  letter-spacing: 4px;
  text-transform: uppercase;
  font-weight: 700;
}

.footer-brand p {
  font-size: 14px;
  line-height: 1.8;
  margin-bottom: 8px;
  text-align: center;
}

.footer-addr {
  font-size: 13px;
  color: rgba(255,255,255,0.5);
  margin-top: 4px;
  text-align: center;
}

.footer h4 {
  color: var(--white);
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 20px;
  letter-spacing: 0.5px;
}

.footer ul {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer ul li {
  font-size: 13px;
}

.footer ul a:hover {
  color: var(--accent);
}

.footer-contact p {
  font-size: 14px;
  margin-bottom: 12px;
}

.footer-contact a:hover {
  color: var(--accent);
}

.footer-company-name {
  font-size: 15px;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 12px;
  letter-spacing: 0.5px;
}

.footer-bottom {
  text-align: center;
  padding: 20px 0;
  font-size: 13px;
  color: rgba(255,255,255,0.4);
}

/* ===== BACK TO TOP ===== */
.back-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 44px;
  height: 44px;
  background: var(--accent);
  color: var(--primary);
  border: none;
  border-radius: 50%;
  font-size: 20px;
  font-weight: bold;
  cursor: pointer;
  opacity: 0;
  transform: translateY(20px);
  transition: all 0.35s ease;
  z-index: 999;
  box-shadow: 0 4px 16px rgba(200, 169, 110, 0.5);
}

.back-top.visible {
  opacity: 1;
  transform: translateY(0);
}

.back-top:hover {
  background: var(--accent-light);
  transform: translateY(-3px);
}

/* ===== ANIMATIONS ===== */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* ===== RESPONSIVE ===== */
@media (max-width: 1100px) {
  .services-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 900px) {
  .about-content {
    grid-template-columns: 1fr;
  }
  .about-visual {
    order: -1;
  }
  .cases-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .case-card.large {
    grid-column: span 2;
  }
  .brand-grid {
    grid-template-columns: 1fr;
  }
  .brand-strategy {
    grid-template-columns: 1fr;
  }
  .contact-content {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .nav-links {
    position: fixed;
    top: var(--navbar-h);
    left: 0;
    right: 0;
    background: var(--primary);
    flex-direction: column;
    gap: 0;
    padding: 16px 0;
    transform: translateY(-120%);
    transition: transform 0.35s ease;
    z-index: 999;
    box-shadow: var(--shadow-md);
  }
  .nav-links.open {
    transform: translateY(0);
  }
  .nav-links a {
    padding: 14px 24px;
    border-bottom: 1px solid rgba(255,255,255,0.05);
    display: block;
  }
  .menu-btn {
    display: flex;
  }
  .services-grid {
    grid-template-columns: 1fr;
  }
  .cases-grid {
    grid-template-columns: 1fr;
  }
  .case-card.large {
    grid-column: span 1;
  }
  .ind-content {
    grid-template-columns: 1fr;
  }
  .ind-imgs {
    grid-template-columns: 1fr 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: 32px;
  }
  .hero-btns {
    flex-direction: column;
    align-items: center;
  }
  .about-features {
    grid-template-columns: 1fr;
  }
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .contact-form {
    padding: 24px;
  }
}