/* Vizion6 — Premium Corporate + Creative Production Studio */
:root {
  --color-primary: #111111;
  --color-white: #ffffff;
  --color-accent: #d4af37;
  --color-bg: #f7f7f7;
  --color-muted: #6b6b6b;
  --color-border: rgba(17, 17, 17, 0.08);
  --font-zh: 'Noto Sans TC', sans-serif;
  --font-en: 'Montserrat', sans-serif;
  --radius: 12px;
  --radius-lg: 20px;
  --shadow: 0 20px 60px rgba(17, 17, 17, 0.08);
  --shadow-hover: 0 30px 80px rgba(17, 17, 17, 0.14);
  --header-h: 80px;
  --transition: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  --glass: rgba(255, 255, 255, 0.72);
  --glass-dark: rgba(17, 17, 17, 0.55);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-zh);
  font-size: 1rem;
  line-height: 1.75;
  color: var(--color-primary);
  background: var(--color-bg);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

body.loading {
  overflow: hidden;
}

h1, h2, h3, h4, h5, h6,
.section-label,
.logo-text,
.btn-en {
  font-family: var(--font-en);
}

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

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

/* Preloader */
#preloader {
  position: fixed;
  inset: 0;
  z-index: 99999;
  background: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 1.5rem;
  transition: opacity 0.6s ease, visibility 0.6s ease;
}

#preloader.hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.preloader-logo {
  font-family: var(--font-en);
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: 0.35em;
  color: var(--color-white);
}

.preloader-logo span {
  color: var(--color-accent);
}

.preloader-bar {
  width: 120px;
  height: 2px;
  background: rgba(255, 255, 255, 0.15);
  border-radius: 2px;
  overflow: hidden;
}

.preloader-bar::after {
  content: '';
  display: block;
  width: 40%;
  height: 100%;
  background: var(--color-accent);
  animation: preload 1.2s ease-in-out infinite;
}

@keyframes preload {
  0% { transform: translateX(-100%); }
  100% { transform: translateX(350%); }
}

/* Header */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--header-h);
  transition: background var(--transition), box-shadow var(--transition), backdrop-filter var(--transition);
}

.site-header.transparent {
  background: transparent;
}

.site-header.scrolled {
  background: var(--glass);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.06);
}

.site-header .navbar {
  height: var(--header-h);
  padding: 0 1.5rem;
}

.site-header .navbar-brand {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  padding: 0;
}

.logo-mark {
  width: auto;
  height: 48px;
  object-fit: contain;
  display: block;
}

.logo-mark--footer {
  height: 52px;
}

.logo-text {
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  color: var(--color-white);
  transition: color var(--transition);
}

.site-header.scrolled .logo-text,
.site-header.inner-page .logo-text {
  color: var(--color-primary);
}

.site-header .nav-link {
  font-family: var(--font-en);
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.9) !important;
  padding: 0.5rem 0.85rem !important;
  position: relative;
}

.site-header.scrolled .nav-link,
.site-header.inner-page .nav-link {
  color: var(--color-primary) !important;
}

.site-header .nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 2px;
  background: var(--color-accent);
  transition: width var(--transition), left var(--transition);
}

.site-header .nav-link:hover::after,
.site-header .nav-link.active::after {
  width: 60%;
  left: 20%;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.btn-whatsapp {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: #25d366;
  color: #fff;
  font-size: 1.2rem;
  transition: transform var(--transition), box-shadow var(--transition);
}

.btn-whatsapp:hover {
  transform: scale(1.08);
  box-shadow: 0 8px 24px rgba(37, 211, 102, 0.4);
  color: #fff;
}

.btn-primary-gold {
  background: var(--color-accent);
  color: var(--color-primary);
  border: none;
  font-family: var(--font-en);
  font-weight: 600;
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.65rem 1.25rem;
  border-radius: 50px;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition);
}

.btn-primary-gold:hover {
  background: #e8c252;
  color: var(--color-primary);
  transform: translateY(-2px);
  box-shadow: 0 12px 32px rgba(212, 175, 55, 0.35);
}

.btn-outline-light {
  border: 1.5px solid rgba(255, 255, 255, 0.7);
  color: #fff;
  font-family: var(--font-en);
  font-weight: 600;
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.65rem 1.5rem;
  border-radius: 50px;
  background: transparent;
  transition: all var(--transition);
}

.btn-outline-light:hover {
  background: #fff;
  color: var(--color-primary);
  border-color: #fff;
}

.btn-outline-dark {
  border: 1.5px solid var(--color-primary);
  color: var(--color-primary);
  font-family: var(--font-en);
  font-weight: 600;
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.55rem 1.15rem;
  border-radius: 50px;
  background: transparent;
  transition: all var(--transition);
}

.btn-outline-dark:hover {
  background: var(--color-primary);
  color: #fff;
}

.lang-switch .dropdown-toggle {
  font-family: var(--font-en);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.25);
  color: #fff;
  border-radius: 50px;
  padding: 0.4rem 0.9rem;
}

.site-header.scrolled .lang-switch .dropdown-toggle,
.site-header.inner-page .lang-switch .dropdown-toggle {
  background: transparent;
  border-color: var(--color-border);
  color: var(--color-primary);
}

.navbar-toggler {
  border-color: rgba(255, 255, 255, 0.4);
}

.site-header.scrolled .navbar-toggler,
.site-header.inner-page .navbar-toggler {
  border-color: var(--color-primary);
}

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

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

.hero-media video,
.hero-media .hero-poster {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-poster {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  animation: heroZoom 20s ease-in-out infinite alternate;
}

@keyframes heroZoom {
  from { transform: scale(1); }
  to { transform: scale(1.1); }
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(17, 17, 17, 0.55) 0%, rgba(17, 17, 17, 0.75) 100%);
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  color: #fff;
  padding: calc(var(--header-h) + 2rem) 1.5rem 4rem;
  max-width: 900px;
}

.hero-content h1 {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 700;
  letter-spacing: 0.04em;
  line-height: 1.2;
  margin-bottom: 1.25rem;
}

.hero-subtitle {
  font-size: clamp(1rem, 2.2vw, 1.25rem);
  opacity: 0.92;
  margin-bottom: 2.5rem;
  font-weight: 300;
}

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

.scroll-down {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  color: #fff;
  text-align: center;
  animation: bounce 2s infinite;
}

.scroll-down span {
  display: block;
  font-family: var(--font-en);
  font-size: 0.65rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  margin-bottom: 0.5rem;
  opacity: 0.7;
}

@keyframes bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(8px); }
}

/* Sections */
.section {
  padding: 6rem 0;
}

.section-dark {
  background: var(--color-primary);
  color: #fff;
}

.section-white {
  background: #fff;
}

.section-label {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 0.75rem;
  display: block;
}

.section-title {
  font-size: clamp(1.75rem, 3.5vw, 2.5rem);
  font-weight: 700;
  line-height: 1.25;
  margin-bottom: 1.5rem;
}

.section-desc {
  color: var(--color-muted);
  max-width: 680px;
}

.section-dark .section-desc {
  color: rgba(255, 255, 255, 0.7);
}

/* Logo Slider */
.logo-slider-wrap {
  padding: 3rem 0;
  background: #fff;
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  overflow: hidden;
}

.logo-slider-title {
  text-align: center;
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-muted);
  margin-bottom: 2rem;
}

.logo-track {
  display: flex;
  width: max-content;
  animation: logoScroll 40s linear infinite;
}

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

.logo-slide {
  display: flex;
  align-items: center;
  gap: 4rem;
  padding: 0 2rem;
}

.logo-slide img {
  height: 48px;
  width: auto;
  max-width: 140px;
  object-fit: contain;
  filter: grayscale(100%);
  opacity: 0.65;
  transition: filter var(--transition), opacity var(--transition);
}

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

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

/* About */
.about-image-wrap {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow);
}

.about-image-wrap img {
  width: 100%;
  height: 520px;
  object-fit: cover;
  transition: transform 0.8s ease;
}

.about-image-wrap:hover img {
  transform: scale(1.04);
}

.about-image-wrap::after {
  content: '';
  position: absolute;
  inset: 0;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-lg);
  pointer-events: none;
}

.value-card {
  background: #fff;
  border-radius: var(--radius);
  padding: 1.75rem;
  border: 1px solid var(--color-border);
  height: 100%;
  transition: transform var(--transition), box-shadow var(--transition);
}

.value-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}

.value-card h3,
.value-card h4 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 0.75rem;
  color: var(--color-accent);
}

.value-card p {
  margin: 0;
  color: var(--color-muted);
  font-size: 0.95rem;
  line-height: 1.7;
}

/* Why / Advantage Cards */
.advantage-card {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 2.5rem 2rem;
  border: 1px solid var(--color-border);
  height: 100%;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
  position: relative;
  overflow: hidden;
}

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

.advantage-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-hover);
  border-color: rgba(212, 175, 55, 0.3);
}

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

.advantage-icon {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  background: linear-gradient(135deg, rgba(212, 175, 55, 0.15), rgba(212, 175, 55, 0.05));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  color: var(--color-accent);
  margin-bottom: 1.5rem;
}

.advantage-card h3 {
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 1rem;
}

.advantage-card p {
  color: var(--color-muted);
  font-size: 0.95rem;
  margin: 0;
}

.standard-block {
  background: var(--color-primary);
  color: #fff;
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  margin-top: 3rem;
}

.standard-item {
  padding: 1.25rem 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.standard-item:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.standard-item h4 {
  font-size: 1.05rem;
  margin-bottom: 0.5rem;
  color: var(--color-accent);
}

.standard-item p {
  margin: 0;
  opacity: 0.85;
  font-size: 0.95rem;
}

/* Service Cards */
.service-card {
  background: #fff;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--color-border);
  height: 100%;
  display: flex;
  flex-direction: column;
  transition: transform var(--transition), box-shadow var(--transition);
}

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

.service-card-img {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16/10;
}

.service-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.7s ease;
}

.service-card:hover .service-card-img img {
  transform: scale(1.08);
}

.service-card-body {
  padding: 1.75rem;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.service-card-body h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 0.75rem;
}

.service-card-body p {
  color: var(--color-muted);
  font-size: 0.92rem;
  flex: 1;
  margin-bottom: 1.25rem;
}

.service-price {
  font-size: 0.8rem;
  color: var(--color-accent);
  font-weight: 600;
  letter-spacing: 0.05em;
  margin-bottom: 1rem;
}

/* Process Section */
.section-light {
  background: var(--color-bg);
}

.process-panel {
  background: rgba(255, 255, 255, 0.9);
  border-radius: calc(var(--radius) + 4px);
  padding: 2.5rem 1.5rem;
  border: 1px solid var(--color-border);
}

.process-timeline {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: flex-start;
  gap: 0;
  position: relative;
  padding: 0;
  margin: 0;
  list-style: none;
}

.process-step {
  flex: 1;
  min-width: 120px;
  max-width: 180px;
  text-align: center;
  position: relative;
  padding: 0 1.25rem;
}

.process-step::after {
  content: '→';
  position: absolute;
  right: -6px;
  top: 22px;
  color: var(--color-accent);
  font-size: 1.1rem;
  line-height: 1;
}

.process-step:last-child::after {
  display: none;
}

.process-num {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--color-primary);
  color: var(--color-accent);
  font-family: var(--font-en);
  font-weight: 700;
  font-size: 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 0.85rem;
  border: 2px solid var(--color-accent);
}

.process-step h3 {
  font-size: 0.95rem;
  font-weight: 600;
  margin: 0 0 0.5rem;
  color: var(--color-primary);
}

.process-step p {
  margin: 0;
  font-size: 0.85rem;
  line-height: 1.55;
  color: var(--color-muted);
}

/* Portfolio Masonry */
.portfolio-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  justify-content: center;
  margin-bottom: 2.5rem;
}

.filter-btn {
  font-family: var(--font-en);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.5rem 1.15rem;
  border-radius: 50px;
  border: 1px solid var(--color-border);
  background: #fff;
  color: var(--color-primary);
  cursor: pointer;
  transition: all var(--transition);
}

.filter-btn:hover,
.filter-btn.active {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
}

.portfolio-grid {
  column-count: 3;
  column-gap: 1.25rem;
}

.portfolio-item {
  break-inside: avoid;
  margin-bottom: 1.25rem;
  border-radius: var(--radius);
  overflow: hidden;
  position: relative;
  cursor: pointer;
}

.portfolio-item img {
  width: 100%;
  transition: transform 0.6s ease;
}

.portfolio-item:hover img {
  transform: scale(1.05);
}

.portfolio-overlay {
  position: absolute;
  inset: 0;
  background: rgba(17, 17, 17, 0.65);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity var(--transition);
  padding: 1.5rem;
  text-align: center;
  color: #fff;
}

.portfolio-item:hover .portfolio-overlay {
  opacity: 1;
}

.portfolio-overlay .play-icon {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  border: 2px solid #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  margin-bottom: 1rem;
  transition: transform var(--transition), background var(--transition);
}

.portfolio-item:hover .play-icon {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: var(--color-primary);
  transform: scale(1.1);
}

.portfolio-overlay h4 {
  font-size: 0.9rem;
  font-weight: 600;
  margin: 0;
}

/* Stats */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
}

.stat-item {
  text-align: center;
  padding: 2rem 1rem;
}

.stat-num {
  font-family: var(--font-en);
  font-size: clamp(2.5rem, 5vw, 3.5rem);
  font-weight: 700;
  color: var(--color-accent);
  line-height: 1;
  margin-bottom: 0.5rem;
}

.stat-label {
  font-size: 0.9rem;
  opacity: 0.8;
}

/* Horizontal Workflow */
.workflow-scroll {
  display: flex;
  gap: 1.5rem;
  overflow-x: auto;
  padding: 1rem 0 2rem;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}

.workflow-scroll::-webkit-scrollbar {
  display: none;
}

.workflow-card {
  flex: 0 0 260px;
  scroll-snap-align: start;
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 2rem;
  border: 1px solid var(--color-border);
  position: relative;
}

.workflow-card::before {
  content: attr(data-step);
  font-family: var(--font-en);
  font-size: 3rem;
  font-weight: 700;
  color: rgba(212, 175, 55, 0.12);
  position: absolute;
  top: 1rem;
  right: 1.25rem;
  line-height: 1;
}

.workflow-card h4 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 0.75rem;
  position: relative;
}

.workflow-card p {
  color: var(--color-muted);
  font-size: 0.9rem;
  margin: 0;
  position: relative;
}

/* FAQ */
.accordion-item {
  border: 1px solid var(--color-border);
  border-radius: var(--radius) !important;
  margin-bottom: 0.75rem;
  overflow: hidden;
  background: #fff;
}

.accordion-button {
  font-weight: 600;
  font-size: 1rem;
  padding: 1.25rem 1.5rem;
  background: #fff;
  box-shadow: none !important;
}

.accordion-button:not(.collapsed) {
  background: var(--color-primary);
  color: #fff;
}

.accordion-button::after {
  filter: none;
}

.accordion-button:not(.collapsed)::after {
  filter: brightness(0) invert(1);
}

.accordion-body {
  padding: 1.25rem 1.5rem;
  color: var(--color-muted);
}

/* CTA */
.cta-section {
  background: var(--color-primary);
  color: #fff;
  text-align: center;
  padding: 5rem 1.5rem;
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  width: 400px;
  height: 400px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(212, 175, 55, 0.15), transparent 70%);
  top: -100px;
  right: -100px;
}

.cta-section h2 {
  font-size: clamp(1.75rem, 3vw, 2.25rem);
  margin-bottom: 1.5rem;
  position: relative;
}

/* SEO Block */
.seo-block {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  border: 1px solid var(--color-border);
}

.seo-block h3 {
  font-size: 1.15rem;
  margin-top: 1.5rem;
  margin-bottom: 0.75rem;
}

.seo-block h3:first-child {
  margin-top: 0;
}

.seo-block p,
.seo-block li {
  color: var(--color-muted);
  font-size: 0.95rem;
}

.seo-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1.5rem;
}

.seo-tag {
  font-size: 0.75rem;
  padding: 0.35rem 0.85rem;
  border-radius: 50px;
  background: var(--color-bg);
  color: var(--color-muted);
  border: 1px solid var(--color-border);
}

/* Footer */
.site-footer {
  background: #0a0a0a;
  color: rgba(255, 255, 255, 0.75);
  padding: 4rem 0 0;
}

.site-footer h5 {
  color: #fff;
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 1.25rem;
}

.site-footer a {
  color: rgba(255, 255, 255, 0.65);
  font-size: 0.9rem;
  display: block;
  padding: 0.25rem 0;
}

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

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  margin-top: 3rem;
  padding: 1.5rem 0;
  font-size: 0.85rem;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 1rem;
}

.footer-bottom a {
  display: inline;
  margin-left: 1rem;
}

/* Back to top */
.back-to-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--color-accent);
  color: var(--color-primary);
  border: none;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: all var(--transition);
  z-index: 999;
  box-shadow: 0 8px 24px rgba(212, 175, 55, 0.35);
}

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

.back-to-top:hover {
  transform: translateY(-4px);
}

/* Inner page hero */
.page-hero {
  padding: calc(var(--header-h) + 4rem) 0 3rem;
  background: var(--color-primary);
  color: #fff;
  text-align: center;
  margin-top: 0;
}

.page-hero h1 {
  font-size: clamp(2rem, 4vw, 2.75rem);
  font-weight: 700;
  margin: 0;
}

.page-content {
  padding: 0;
}

main > .section:first-child {
  padding-top: 4rem;
}

/* Contact */
.contact-card {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  border: 1px solid var(--color-border);
  height: 100%;
}

.contact-item {
  display: flex;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.contact-item i {
  color: var(--color-accent);
  font-size: 1.2rem;
  margin-top: 0.2rem;
}

/* Responsive */
@media (max-width: 991.98px) {
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .portfolio-grid {
    column-count: 2;
  }

  .process-step::after {
    display: none;
  }

  .navbar-collapse {
    background: var(--glass);
    backdrop-filter: blur(20px);
    border-radius: var(--radius);
    padding: 1rem;
    margin-top: 0.5rem;
  }

  .site-header.transparent .navbar-collapse {
    background: rgba(17, 17, 17, 0.95);
  }

  .site-header.transparent .navbar-collapse .nav-link {
    color: #fff !important;
  }
}

@media (max-width: 767.98px) {
  .section {
    padding: 4rem 0;
  }

  .portfolio-grid {
    column-count: 1;
  }

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

  .about-image-wrap img {
    height: 360px;
  }

  .header-actions .btn-primary-gold span {
    display: none;
  }
}

@media (max-width: 575.98px) {
  .hero-cta {
    flex-direction: column;
    align-items: center;
  }
}