/* ========================================
   JINYI LUGGAGE - Premium B2B Website
   Style System v1.0
   ======================================== */

/* ============== Design Tokens ============== */
:root {
  --color-dark: #0a0a0a;
  --color-dark-2: #1a1a1a;
  --color-dark-3: #2a2a2a;
  --color-dark-4: #3a3a3a;
  --color-white: #ffffff;
  --color-bg: #f7f7f7;
  --color-bg-2: #f0f0f0;
  --color-bg-3: #eaeaea;
  --color-gold: #b8945f;
  --color-gold-light: #d4af7a;
  --color-gold-dark: #9a7a4a;
  --color-text: #1a1a1a;
  --color-text-2: #555;
  --color-text-3: #888;
  --color-text-4: #aaa;
  --color-border: #e0e0e0;
  --color-border-2: #d0d0d0;
  --color-overlay: rgba(10, 10, 10, 0.6);
  --color-overlay-dark: rgba(10, 10, 10, 0.85);

  --font-sans: 'Helvetica Neue', Arial, 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-serif: Georgia, 'Times New Roman', serif;

  --container-max: 1280px;
  --container-pad: 24px;
  --radius: 4px;
  --radius-lg: 8px;
  --radius-xl: 16px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.6s cubic-bezier(0.4, 0, 0.2, 1);
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 20px rgba(0,0,0,0.1);
  --shadow-lg: 0 8px 40px rgba(0,0,0,0.15);
  --header-h: 72px;
}

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

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

body {
  font-family: var(--font-sans);
  color: var(--color-text);
  background: var(--color-white);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

ul, ol { list-style: none; }

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

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

/* ============== Container ============== */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-pad);
}

.container-wide {
  max-width: 1440px;
  margin: 0 auto;
  padding: 0 var(--container-pad);
}

.container-narrow {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 var(--container-pad);
}

/* ============== Header / Navigation ============== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-h);
  background: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(12px);
  z-index: 1000;
  transition: all var(--transition);
  border-bottom: 1px solid transparent;
}

.site-header.scrolled {
  box-shadow: var(--shadow-sm);
  border-bottom-color: var(--color-border);
}

.header-inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-pad);
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.logo-mark {
  width: 40px;
  height: 40px;
  background: var(--color-dark);
  color: var(--color-white);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 18px;
  letter-spacing: 1px;
  border-radius: var(--radius);
}

.logo-img {
  height: 30px;
  width: auto;
  object-fit: contain;
  border-radius: var(--radius);
  flex-shrink: 0;
}

.logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.logo-name {
  font-size: 18px;
  font-weight: 800;
  letter-spacing: 2px;
  color: var(--color-dark);
}

.logo-tag {
  font-size: 10px;
  letter-spacing: 1.5px;
  color: var(--color-text-3);
  text-transform: uppercase;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 36px;
}

.nav-link {
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text-2);
  letter-spacing: 0.5px;
  position: relative;
  padding: 4px 0;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-gold);
  transition: width var(--transition);
}

.nav-link:hover {
  color: var(--color-dark);
}

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

.nav-link.active {
  color: var(--color-dark);
  font-weight: 600;
}

.header-cta {
  display: flex;
  align-items: center;
  gap: 16px;
}

.btn-quote {
  background: var(--color-dark);
  color: var(--color-white);
  padding: 10px 24px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 1px;
  text-transform: uppercase;
  transition: all var(--transition);
  border-radius: var(--radius);
}

.btn-quote:hover {
  background: var(--color-gold);
  transform: translateY(-1px);
}

.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
}

.menu-toggle span {
  width: 24px;
  height: 2px;
  background: var(--color-dark);
  transition: all var(--transition);
}

/* ============== Buttons ============== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 36px;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 1px;
  text-transform: uppercase;
  transition: all var(--transition);
  border-radius: var(--radius);
  cursor: pointer;
}

.btn-primary {
  background: var(--color-dark);
  color: var(--color-white);
}

.btn-primary:hover {
  background: var(--color-gold);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-outline {
  background: transparent;
  color: var(--color-white);
  border: 1px solid rgba(255,255,255,0.5);
}

.btn-outline:hover {
  background: var(--color-white);
  color: var(--color-dark);
  border-color: var(--color-white);
}

.btn-gold {
  background: var(--color-gold);
  color: var(--color-white);
}

.btn-gold:hover {
  background: var(--color-gold-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-ghost {
  background: transparent;
  color: var(--color-dark);
  border: 1px solid var(--color-dark);
}

.btn-ghost:hover {
  background: var(--color-dark);
  color: var(--color-white);
}

.btn-text {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--color-dark);
  border-bottom: 1px solid var(--color-dark);
  padding-bottom: 4px;
  transition: all var(--transition);
}

.btn-text:hover {
  color: var(--color-gold);
  border-bottom-color: var(--color-gold);
  gap: 12px;
}

/* ============== Section Base ============== */
.section {
  padding: 100px 0;
}

.section-sm {
  padding: 60px 0;
}

.section-dark {
  background: var(--color-dark);
  color: var(--color-white);
}

.section-gray {
  background: var(--color-bg);
}

.section-header {
  text-align: center;
  margin-bottom: 60px;
}

.section-label {
  font-size: 12px;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--color-gold);
  font-weight: 600;
  margin-bottom: 16px;
  display: block;
}

.section-title {
  font-size: 40px;
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.5px;
  margin-bottom: 16px;
}

.section-dark .section-title {
  color: var(--color-white);
}

.section-subtitle {
  font-size: 16px;
  color: var(--color-text-2);
  max-width: 600px;
  margin: 0 auto;
  line-height: 1.7;
}

.section-dark .section-subtitle {
  color: rgba(255,255,255,0.6);
}

/* ============== Hero ============== */
.hero {
  position: relative;
  height: 100vh;
  min-height: 600px;
  max-height: 900px;
  overflow: hidden;
  display: flex;
  align-items: center;
  background: var(--color-dark);
}

.hero-slide {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  opacity: 0;
  transition: opacity 1.2s ease;
  display: flex;
  align-items: center;
}

.hero-slide.active {
  opacity: 1;
}

.hero-bg {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-size: cover;
  background-position: center;
}

.hero-bg::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, rgba(10,10,10,0.8) 0%, rgba(10,10,10,0.4) 100%);
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 720px;
  padding: 0 var(--container-pad);
  margin: 0 auto;
  width: 100%;
}

.hero-label {
  font-size: 13px;
  letter-spacing: 4px;
  text-transform: uppercase;
  color: var(--color-gold);
  font-weight: 600;
  margin-bottom: 24px;
  opacity: 0;
  animation: fadeInUp 0.8s 0.3s forwards;
}

.hero-title {
  font-size: 56px;
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -1px;
  color: var(--color-white);
  margin-bottom: 24px;
  opacity: 0;
  animation: fadeInUp 0.8s 0.5s forwards;
}

.hero-desc {
  font-size: 18px;
  color: rgba(255,255,255,0.7);
  line-height: 1.7;
  margin-bottom: 40px;
  opacity: 0;
  animation: fadeInUp 0.8s 0.7s forwards;
}

.hero-actions {
  display: flex;
  gap: 16px;
  opacity: 0;
  animation: fadeInUp 0.8s 0.9s forwards;
}

.hero-dots {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 12px;
  z-index: 3;
}

.hero-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: rgba(255,255,255,0.3);
  cursor: pointer;
  transition: all var(--transition);
}

.hero-dot.active {
  background: var(--color-gold);
  width: 32px;
  border-radius: 5px;
}

.hero-scroll {
  position: absolute;
  bottom: 40px;
  right: 40px;
  z-index: 3;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: rgba(255,255,255,0.5);
  font-size: 11px;
  letter-spacing: 2px;
  text-transform: uppercase;
}

.hero-scroll-line {
  width: 1px;
  height: 40px;
  background: rgba(255,255,255,0.3);
  position: relative;
  overflow: hidden;
}

.hero-scroll-line::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 50%;
  background: var(--color-gold);
  animation: scrollDown 2s infinite;
}

@keyframes scrollDown {
  0% { top: -50%; }
  100% { top: 100%; }
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ============== Value Props ============== */
.value-props {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.value-prop {
  padding: 48px 32px;
  text-align: center;
  border-right: 1px solid var(--color-border);
  transition: background var(--transition);
}

.value-prop:last-child {
  border-right: none;
}

.value-prop:hover {
  background: var(--color-bg);
}

.value-prop-icon {
  width: 56px;
  height: 56px;
  margin: 0 auto 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  background: var(--color-bg);
  border-radius: 50%;
  transition: all var(--transition);
}

.value-prop:hover .value-prop-icon {
  background: var(--color-dark);
  color: var(--color-gold);
}

.value-prop-title {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 8px;
}

.value-prop-desc {
  font-size: 13px;
  color: var(--color-text-3);
  line-height: 1.6;
}

/* ============== About Preview ============== */
.about-preview {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.about-image-wrap {
  position: relative;
}

.about-image-main {
  width: 100%;
  aspect-ratio: 4 / 3;
  background: transparent;
  border-radius: 0;
  overflow: hidden;
}

.about-image-main img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center center;
  display: block;
}

.about-image-badge {
  position: absolute;
  bottom: -24px;
  right: -24px;
  background: var(--color-gold);
  color: var(--color-white);
  padding: 28px 36px;
  border-radius: var(--radius-lg);
  text-align: center;
  box-shadow: var(--shadow-lg);
}

.about-image-badge .num {
  font-size: 42px;
  font-weight: 800;
  line-height: 1;
}

.about-image-badge .label {
  font-size: 12px;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  margin-top: 6px;
}

.about-text .section-label {
  text-align: left;
}

.about-text h2 {
  font-size: 36px;
  font-weight: 800;
  line-height: 1.25;
  margin-bottom: 24px;
}

.about-text p {
  font-size: 15px;
  color: var(--color-text-2);
  line-height: 1.8;
  margin-bottom: 16px;
}

.about-features {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin: 32px 0;
}

.about-feature {
  display: flex;
  align-items: flex-start;
  gap: 12px;
}

.about-feature-check {
  width: 24px;
  height: 24px;
  background: var(--color-dark);
  color: var(--color-gold);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  flex-shrink: 0;
  margin-top: 2px;
}

.about-feature-text {
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text);
}

/* ============== Products Grid ============== */
.products-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.product-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  overflow: hidden;
  transition: all var(--transition);
  cursor: pointer;
}

.product-card:hover {
  border-color: var(--color-dark);
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.product-card-image {
  aspect-ratio: 1 / 1;
  background: var(--color-bg);
  overflow: hidden;
  position: relative;
}

.product-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}

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

.product-card-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--color-overlay-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity var(--transition);
}

.product-card:hover .product-card-overlay {
  opacity: 1;
}

.product-card-overlay .btn {
  opacity: 0;
  transform: translateY(20px);
  transition: all 0.4s 0.1s ease;
}

.product-card:hover .product-card-overlay .btn {
  opacity: 1;
  transform: translateY(0);
}

.product-card-info {
  padding: 24px;
}

.product-card-cat {
  font-size: 11px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--color-gold);
  font-weight: 600;
  margin-bottom: 8px;
}

.product-card-title {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 8px;
}

.product-card-desc {
  font-size: 13px;
  color: var(--color-text-3);
  line-height: 1.6;
}

/* ============== Stats / Data ============== */
.stats-section {
  background: var(--color-dark);
  padding: 80px 0;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 40px;
  text-align: center;
}

.stat-item {
  padding: 0 20px;
  border-right: 1px solid rgba(255,255,255,0.1);
}

.stat-item:last-child {
  border-right: none;
}

.stat-num {
  font-size: 52px;
  font-weight: 800;
  color: var(--color-white);
  line-height: 1;
  margin-bottom: 12px;
}

.stat-num .suffix {
  font-size: 24px;
  color: var(--color-gold);
  font-weight: 600;
}

.stat-label {
  font-size: 13px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: rgba(255,255,255,0.5);
}

/* ============== Service Steps ============== */
.service-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-top: 60px;
}

.service-step {
  text-align: center;
  padding: 40px 24px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: all var(--transition);
  position: relative;
}

.service-step:hover {
  border-color: var(--color-gold);
  background: var(--color-bg);
  transform: translateY(-4px);
}

.service-step-num {
  font-size: 14px;
  font-weight: 700;
  color: var(--color-gold);
  letter-spacing: 2px;
  margin-bottom: 20px;
}

.service-step-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 24px;
  background: var(--color-dark);
  color: var(--color-gold);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  transition: all var(--transition);
}

.service-step:hover .service-step-icon {
  background: var(--color-gold);
  color: var(--color-white);
  transform: scale(1.1);
}

.service-step-title {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 12px;
}

.service-step-desc {
  font-size: 13px;
  color: var(--color-text-3);
  line-height: 1.7;
}

/* ============== Why Choose Us ============== */
.why-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 60px;
  align-items: center;
}

.why-image {
  aspect-ratio: 3 / 2;
  background: transparent;
  border-radius: 0;
  overflow: hidden;
}

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

.why-list {
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.why-item {
  display: flex;
  gap: 20px;
  align-items: flex-start;
}

.why-item-num {
  font-size: 40px;
  font-weight: 800;
  color: var(--color-bg-3);
  line-height: 1;
  flex-shrink: 0;
  min-width: 60px;
}

.why-item-content h4 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 8px;
}

.why-item-content p {
  font-size: 14px;
  color: var(--color-text-2);
  line-height: 1.7;
}

/* ============== CTA Banner ============== */
.cta-banner {
  position: relative;
  padding: 120px 0;
  text-align: center;
  overflow: hidden;
  background: var(--color-dark);
}

.cta-banner::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, rgba(10,10,10,0.9), rgba(10,10,10,0.7)), url('https://images.unsplash.com/photo-1553532730-318f82a5f5b5?w=1600') center/cover;
}

.cta-banner-content {
  position: relative;
  z-index: 2;
  max-width: 700px;
  margin: 0 auto;
  padding: 0 var(--container-pad);
}

.cta-banner h2 {
  font-size: 44px;
  font-weight: 800;
  color: var(--color-white);
  line-height: 1.2;
  margin-bottom: 24px;
}

.cta-banner p {
  font-size: 17px;
  color: rgba(255,255,255,0.6);
  margin-bottom: 40px;
  line-height: 1.7;
}

/* ============== News ============== */
.news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.news-card {
  cursor: pointer;
  transition: all var(--transition);
}

.news-card:hover {
  transform: translateY(-4px);
}

.news-card-image {
  aspect-ratio: 16 / 10;
  background: var(--color-bg);
  overflow: hidden;
  border-radius: var(--radius);
  margin-bottom: 20px;
}

.news-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}

.news-card:hover .news-card-image img {
  transform: scale(1.05);
}

.news-card-date {
  font-size: 12px;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--color-gold);
  font-weight: 600;
  margin-bottom: 8px;
}

.news-card-title {
  font-size: 18px;
  font-weight: 700;
  line-height: 1.4;
  margin-bottom: 8px;
  transition: color var(--transition);
}

.news-card:hover .news-card-title {
  color: var(--color-gold);
}

.news-card-excerpt {
  font-size: 14px;
  color: var(--color-text-3);
  line-height: 1.6;
}

/* ============== Footer ============== */
.site-footer {
  background: var(--color-dark);
  color: rgba(255,255,255,0.6);
  padding: 80px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 60px;
  padding-bottom: 60px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

.footer-brand .logo-mark {
  background: var(--color-white);
  color: var(--color-dark);
}

.footer-brand .logo-img {
  background: var(--color-white);
  padding: 2px;
  height: 26px;
  width: auto;
}

.footer-brand .logo-name {
  color: var(--color-white);
}

.footer-brand .logo-tag {
  color: rgba(255,255,255,0.4);
}

.footer-brand p {
  margin: 24px 0;
  font-size: 14px;
  line-height: 1.7;
  color: rgba(255,255,255,0.5);
  max-width: 320px;
}

.footer-social {
  display: flex;
  gap: 12px;
}

.footer-social a {
  width: 40px;
  height: 40px;
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  color: rgba(255,255,255,0.5);
  transition: all var(--transition);
}

.footer-social a:hover {
  background: var(--color-gold);
  border-color: var(--color-gold);
  color: var(--color-white);
}

.footer-col h4 {
  font-size: 14px;
  font-weight: 700;
  color: var(--color-white);
  letter-spacing: 1px;
  text-transform: uppercase;
  margin-bottom: 24px;
}

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

.footer-links a {
  font-size: 14px;
  color: rgba(255,255,255,0.5);
  transition: all var(--transition);
}

.footer-links a:hover {
  color: var(--color-gold);
  padding-left: 4px;
}

.footer-contact-item {
  display: flex;
  gap: 12px;
  margin-bottom: 16px;
  font-size: 14px;
  color: rgba(255,255,255,0.5);
  align-items: flex-start;
}

.footer-contact-item .icon {
  color: var(--color-gold);
  flex-shrink: 0;
  margin-top: 2px;
}

.footer-bottom {
  padding: 24px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 13px;
  color: rgba(255,255,255,0.4);
}

.footer-bottom-links {
  display: flex;
  gap: 24px;
}

/* ============== Floating Inquiry ============== */
.float-inquiry {
  position: fixed;
  bottom: 30px;
  right: 30px;
  z-index: 900;
  display: flex;
  flex-direction: column;
  gap: 12px;
  align-items: flex-end;
}

.float-whatsapp {
  width: 56px;
  height: 56px;
  background: #25d366;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  color: white;
  box-shadow: var(--shadow-md);
  transition: all var(--transition);
  cursor: pointer;
}

.float-whatsapp:hover {
  transform: scale(1.1);
  box-shadow: var(--shadow-lg);
}

.float-top {
  width: 44px;
  height: 44px;
  background: var(--color-dark);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-white);
  font-size: 18px;
  box-shadow: var(--shadow-sm);
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition);
}

.float-top.visible {
  opacity: 1;
  visibility: visible;
}

.float-top:hover {
  background: var(--color-gold);
}

/* ============== Page Banner ============== */
.page-banner {
  height: 400px;
  background: var(--color-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  position: relative;
  overflow: hidden;
  margin-top: var(--header-h);
}

.page-banner::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, rgba(10,10,10,0.85), rgba(10,10,10,0.5));
}

.page-banner-bg {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-size: cover;
  background-position: center;
  opacity: 0.4;
}

.page-banner-content {
  position: relative;
  z-index: 2;
  padding: 0 var(--container-pad);
}

.page-banner h1 {
  font-size: 48px;
  font-weight: 800;
  color: var(--color-white);
  letter-spacing: -0.5px;
  margin-bottom: 16px;
}

.breadcrumb {
  display: flex;
  gap: 8px;
  align-items: center;
  font-size: 13px;
  color: rgba(255,255,255,0.5);
  justify-content: center;
  letter-spacing: 1px;
}

.breadcrumb a:hover {
  color: var(--color-gold);
}

.breadcrumb .sep {
  color: rgba(255,255,255,0.3);
}

/* ============== Contact Form ============== */
.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 60px;
}

.contact-info-card {
  background: var(--color-dark);
  color: var(--color-white);
  padding: 48px;
  border-radius: var(--radius-lg);
}

.contact-info-card h3 {
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 32px;
}

.contact-info-item {
  display: flex;
  gap: 16px;
  margin-bottom: 28px;
  align-items: flex-start;
}

.contact-info-item .icon {
  width: 44px;
  height: 44px;
  background: rgba(255,255,255,0.08);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  color: var(--color-gold);
  flex-shrink: 0;
}

.contact-info-item .label {
  font-size: 12px;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: rgba(255,255,255,0.4);
  margin-bottom: 4px;
}

.contact-info-item .value {
  font-size: 15px;
  color: rgba(255,255,255,0.9);
}

.contact-form-wrap {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  padding: 48px;
  border-radius: var(--radius-lg);
}

.contact-form-wrap h3 {
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 8px;
}

.contact-form-wrap .form-desc {
  color: var(--color-text-3);
  font-size: 14px;
  margin-bottom: 32px;
}

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

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--color-text-2);
  margin-bottom: 8px;
  letter-spacing: 0.5px;
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  font-size: 14px;
  background: var(--color-bg);
  transition: all var(--transition);
  color: var(--color-text);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--color-dark);
  background: var(--color-white);
}

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

/* ============== Product Detail ============== */
.product-detail-layout {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 60px;
  margin-top: 60px;
}

.product-gallery {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.product-gallery-main {
  aspect-ratio: 1 / 1;
  background: var(--color-bg);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

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

.product-gallery-thumbs {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}

.product-gallery-thumb {
  aspect-ratio: 1 / 1;
  background: var(--color-bg);
  border-radius: var(--radius);
  overflow: hidden;
  cursor: pointer;
  border: 2px solid transparent;
  transition: border-color var(--transition);
}

.product-gallery-thumb.active {
  border-color: var(--color-dark);
}

.product-gallery-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.product-info-detail h1 {
  font-size: 32px;
  font-weight: 800;
  margin-bottom: 12px;
}

.product-info-detail .product-cat {
  font-size: 13px;
  color: var(--color-gold);
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 20px;
}

.product-info-detail .product-short-desc {
  font-size: 15px;
  color: var(--color-text-2);
  line-height: 1.7;
  margin-bottom: 32px;
  padding-bottom: 32px;
  border-bottom: 1px solid var(--color-border);
}

.product-specs {
  margin-bottom: 32px;
}

.product-spec-row {
  display: flex;
  padding: 14px 0;
  border-bottom: 1px solid var(--color-border);
}

.product-spec-label {
  width: 160px;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text-2);
}

.product-spec-value {
  font-size: 14px;
  color: var(--color-text);
}

/* ============== Filter Bar ============== */
.filter-bar {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 40px;
  justify-content: center;
}

.filter-btn {
  padding: 10px 24px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 1px;
  text-transform: uppercase;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  color: var(--color-text-2);
  transition: all var(--transition);
  cursor: pointer;
}

.filter-btn:hover {
  border-color: var(--color-dark);
}

.filter-btn.active {
  background: var(--color-dark);
  color: var(--color-white);
  border-color: var(--color-dark);
}

/* ============== Animations on Scroll ============== */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

.fade-in-delay-1 { transition-delay: 0.1s; }
.fade-in-delay-2 { transition-delay: 0.2s; }
.fade-in-delay-3 { transition-delay: 0.3s; }

/* ============== Responsive ============== */
@media (max-width: 1024px) {
  .value-props { grid-template-columns: repeat(2, 1fr); }
  .value-prop:nth-child(2) { border-right: none; }
  .value-prop:nth-child(1), .value-prop:nth-child(2) { border-bottom: 1px solid var(--color-border); }
  .about-preview { grid-template-columns: 1fr; gap: 60px; }
  .products-grid { grid-template-columns: repeat(2, 1fr); }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 60px 40px; }
  .stat-item:nth-child(2) { border-right: none; }
  .service-steps { grid-template-columns: repeat(2, 1fr); }
  .why-grid { grid-template-columns: 1fr; gap: 40px; }
  .news-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 40px; }
  .contact-layout { grid-template-columns: 1fr; }
  .product-detail-layout { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  :root { --header-h: 50px; }

  .logo-img { height: 22px; width: auto; }

  .about-image-main { aspect-ratio: 4 / 3; }
  .why-image { aspect-ratio: 3 / 2; }

  .nav-menu {
    display: none;
    position: fixed;
    top: var(--header-h);
    left: 0;
    right: 0;
    background: var(--color-white);
    flex-direction: column;
    padding: 24px;
    gap: 0;
    box-shadow: var(--shadow-lg);
    border-top: 1px solid var(--color-border);
  }

  .nav-menu.open {
    display: flex;
  }

  .nav-menu .nav-link {
    padding: 16px 0;
    border-bottom: 1px solid var(--color-border);
    width: 100%;
  }

  .menu-toggle { display: flex; }

  .header-cta .btn-quote { display: none; }

  .section { padding: 60px 0; }
  .section-header { margin-bottom: 40px; }
  .section-title { font-size: 28px; }

  .hero-title { font-size: 26px; }
  .hero-desc { font-size: 14px; margin-bottom: 24px; }
  .hero-actions { flex-direction: column; }
  .hero-actions .btn { width: 100%; }
  .hero-scroll { display: none; }

  .hero {
    height: 35vh;
    min-height: 220px;
    max-height: 340px;
  }
  .hero-slide {
    align-items: flex-start;
  }
  .hero-content {
    padding-top: calc(var(--header-h) + 12px);
  }
  .hero-bg {
    background-position: 65% center;
  }

  .value-props { grid-template-columns: 1fr; }
  .value-prop { border-right: none; border-bottom: 1px solid var(--color-border); }

  .products-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: 1fr; }
  .stat-item { border-right: none; border-bottom: 1px solid rgba(255,255,255,0.1); padding-bottom: 30px; }
  .service-steps { grid-template-columns: 1fr; }
  .news-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; gap: 12px; text-align: center; }

  .about-features { grid-template-columns: 1fr; }
  .about-image-badge { right: 20px; bottom: -20px; padding: 20px 28px; }
  .about-image-badge .num { font-size: 32px; }

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

  .contact-info-card, .contact-form-wrap { padding: 32px 24px; }

  .page-banner h1 { font-size: 32px; }
  .cta-banner h2 { font-size: 28px; }
  .cta-banner { padding: 80px 0; }

  .float-inquiry { bottom: 20px; right: 20px; }
}