/* ============================================
   Tank 300 Global Direct Supply Terminal
   Light Theme - Premium White Automotive Landing
   ============================================ */

/* --- CSS Variables --- */
:root {
  --bg-gradient-start: #F5F7FA;
  --bg-gradient-end: #E4E7ED;
  --bg-card: #FFFFFF;
  --bg-card-hover: #FAFBFC;
  --text-dark: #1A1D26;
  --text-heading: #0F1117;
  --text-gray: #6B7280;
  --text-gray-light: #9CA3AF;
  --accent-orange: #FF5500;
  --accent-orange-light: rgba(255, 85, 0, 0.08);
  --accent-orange-glow: rgba(255, 85, 0, 0.15);
  --accent-blue: #007BFF;
  --accent-blue-light: rgba(0, 123, 255, 0.06);
  --accent-blue-glow: rgba(0, 123, 255, 0.12);
  --accent-green: #39FF14;
  --border-subtle: rgba(0, 0, 0, 0.06);
  --border-card: rgba(0, 0, 0, 0.08);
  --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.06);
  --shadow-card-hover: 0 12px 40px rgba(0, 0, 0, 0.1);
  --shadow-float: 0 8px 32px rgba(0, 0, 0, 0.08);
  --ease-premium: cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
}

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

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

body {
  background: linear-gradient(180deg, var(--bg-gradient-start) 0%, var(--bg-gradient-end) 100%);
  background-attachment: fixed;
  color: var(--text-dark);
  font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  line-height: 1.8;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

/* --- Utility --- */
.container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 40px;
}

.section-padding {
  padding: 120px 0;
}

.section-label {
  font-family: 'Orbitron', 'Rajdhani', sans-serif;
  font-size: 12px;
  letter-spacing: 4px;
  text-transform: uppercase;
  color: var(--accent-blue);
  margin-bottom: 12px;
  display: block;
  font-weight: 700;
}

.section-title {
  font-size: 36px;
  font-weight: 700;
  color: var(--text-heading);
  margin-bottom: 16px;
  line-height: 1.3;
}

.section-desc {
  font-size: 16px;
  color: var(--text-gray);
  max-width: 680px;
  line-height: 1.8;
}

/* --- Scroll Animations --- */
.fade-in-up {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.8s var(--ease-premium), transform 0.8s var(--ease-premium);
}

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

/* ============================================
   SECTION 1: Hero / Brand Vision
   ============================================ */
.hero {
  min-height: auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  text-align: center;
  position: relative;
  padding: 40px 40px 20px 40px;
  background: linear-gradient(180deg, #FFFFFF 0%, var(--bg-gradient-start) 100%);
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(ellipse 80% 50% at 50% 40%, rgba(0, 123, 255, 0.04) 0%, transparent 70%);
  pointer-events: none;
}

.hero-title {
  font-size: clamp(32px, 5vw, 64px);
  font-weight: 900;
  color: var(--text-heading);
  letter-spacing: 2px;
  line-height: 1.2;
  margin-bottom: 24px;
  position: relative;
}

.hero-subtitle {
  font-family: 'Orbitron', 'Rajdhani', monospace;
  font-size: clamp(14px, 1.8vw, 20px);
  color: var(--text-gray);
  letter-spacing: 6px;
  text-transform: uppercase;
  margin-bottom: 48px;
}

.hero-line {
  width: 120px;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--accent-orange), var(--accent-blue), transparent);
  margin: 0 auto;
  border-radius: 1px;
}

.hero-scroll-hint {
  display: none;
}

/* ============================================
   SECTION 2: Trust / Guarantee (对赌承诺舱)
   ============================================ */
.trust {
  background: transparent;
  padding-top: 10px;
  padding-bottom: 60px;
}

.trust-panel {
  background: var(--bg-card);
  border: 2px solid transparent;
  border-image: linear-gradient(135deg, var(--accent-orange), #FF8C42, var(--accent-orange)) 1;
  border-radius: var(--radius-lg);
  padding: 60px;
  margin-top: 48px;
  position: relative;
  box-shadow: var(--shadow-float), 0 0 40px var(--accent-orange-glow);
  overflow: hidden;
}

.trust-panel::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent-orange), #FF8C42, var(--accent-orange));
}

.trust-panel-header {
  text-align: center;
  margin-bottom: 48px;
}

.trust-panel-badge {
  display: inline-block;
  background: linear-gradient(135deg, var(--accent-orange), #FF8C42);
  color: #FFFFFF;
  font-size: 13px;
  font-weight: 700;
  padding: 6px 20px;
  border-radius: 20px;
  letter-spacing: 2px;
  margin-bottom: 16px;
}

.trust-panel-title {
  font-size: 28px;
  font-weight: 900;
  color: var(--text-heading);
}

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

.trust-card {
  background: linear-gradient(135deg, #FFFFFF 0%, #F8F9FB 100%);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-md);
  padding: 36px 28px;
  position: relative;
  overflow: hidden;
  transition: all 0.4s var(--ease-premium);
}

.trust-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card-hover);
  border-color: var(--accent-orange-glow);
}

.trust-card-icon {
  font-size: 36px;
  margin-bottom: 20px;
  display: block;
}

.trust-card-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--accent-orange);
  margin-bottom: 14px;
  line-height: 1.4;
}

.trust-card-desc {
  font-size: 14px;
  color: var(--text-gray);
  line-height: 1.8;
}

.trust-card::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent-orange), var(--accent-blue));
  opacity: 0;
  transition: opacity 0.4s var(--ease-premium);
}

.trust-card:hover::after {
  opacity: 1;
}

/* ============================================
   SECTION 3: Gallery / Showcase
   ============================================ */
.gallery {
  background: transparent;
}

.gallery-header {
  text-align: left;
  margin-bottom: 60px;
}

/* Gallery Card Base */
.gallery-card {
  display: flex;
  align-items: stretch;
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-md);
  overflow: hidden;
  margin-bottom: 24px;
  box-shadow: var(--shadow-card);
  transition: all 0.4s var(--ease-premium);
}

.gallery-card:hover {
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-2px);
}

.gallery-card-text {
  flex: 0 0 280px;
  padding: 40px 36px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.gallery-card-number {
  font-family: 'Orbitron', monospace;
  font-size: 11px;
  color: var(--accent-blue);
  letter-spacing: 3px;
  margin-bottom: 12px;
  opacity: 0.7;
}

.gallery-card-title {
  font-size: 22px;
  font-weight: 700;
  color: var(--text-heading);
  margin-bottom: 12px;
}

.gallery-card-desc {
  font-size: 14px;
  color: var(--text-gray);
  line-height: 1.7;
}

.gallery-card-image {
  flex: 1;
  min-height: 300px;
  overflow: hidden;
}

.gallery-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s var(--ease-premium);
}

.gallery-card:hover .gallery-card-image img {
  transform: scale(1.03);
}

/* Small Cards Row */
.gallery-small-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 24px;
}

.gallery-small-card {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: all 0.4s var(--ease-premium);
}

.gallery-small-card:hover {
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-3px);
}

.gallery-small-card .card-img {
  height: 220px;
  overflow: hidden;
}

.gallery-small-card .card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s var(--ease-premium);
}

.gallery-small-card:hover .card-img img {
  transform: scale(1.05);
}

.gallery-small-card .card-info {
  padding: 20px 24px;
}

.gallery-small-card .card-info .card-number {
  font-family: 'Orbitron', monospace;
  font-size: 10px;
  color: var(--accent-blue);
  letter-spacing: 2px;
  margin-bottom: 6px;
  opacity: 0.7;
}

.gallery-small-card .card-info .card-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-heading);
  margin-bottom: 4px;
}

.gallery-small-card .card-info .card-desc {
  font-size: 13px;
  color: var(--text-gray);
  line-height: 1.6;
}

/* Interior Split Card */
.gallery-interior-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-top: 24px;
}

.gallery-interior-card {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: all 0.4s var(--ease-premium);
}

.gallery-interior-card:hover {
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-3px);
}

.gallery-interior-card .card-img {
  height: 260px;
  overflow: hidden;
}

.gallery-interior-card .card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s var(--ease-premium);
}

.gallery-interior-card:hover .card-img img {
  transform: scale(1.05);
}

.gallery-interior-card .card-info {
  padding: 20px 24px;
}

.gallery-interior-card .card-info .card-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-heading);
  margin-bottom: 4px;
}

.gallery-interior-card .card-info .card-desc {
  font-size: 13px;
  color: var(--text-gray);
}

/* ============================================
   SECTION 4: Video Showcase
   ============================================ */
.video-section {
  background: transparent;
  padding-bottom: 120px;
}

.video-wrapper {
  position: relative;
  max-width: 700px;
  margin: 48px auto 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  box-shadow: var(--shadow-float);
}

.video-wrapper video {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
}

.video-controls {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 16px 24px;
  background: linear-gradient(to top, rgba(0, 0, 0, 0.6), transparent);
  display: flex;
  align-items: center;
  gap: 16px;
  z-index: 3;
}

.video-progress {
  flex: 1;
  height: 3px;
  background: rgba(255, 255, 255, 0.2);
  border-radius: 2px;
  overflow: hidden;
}

.video-progress-bar {
  width: 0%;
  height: 100%;
  background: var(--accent-blue);
  border-radius: 2px;
  transition: width 0.1s linear;
}

.video-time {
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  color: rgba(255, 255, 255, 0.8);
}

.video-label {
  font-size: 12px;
  color: rgba(255, 255, 255, 0.7);
  letter-spacing: 1px;
}

/* ============================================
   SECTION 5: Global Logistics Query (Light)
   ============================================ */
.logistics {
  background: transparent;
}

.logistics-card {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  padding: 60px;
  max-width: 960px;
  margin: 40px auto 0;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-float), 0 0 30px var(--accent-blue-glow);
}

.logistics-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent-blue), var(--accent-orange), var(--accent-blue));
}

.logistics-input-wrap {
  display: flex;
  gap: 16px;
  align-items: stretch;
}

.logistics-input {
  flex: 1;
  background: #F8F9FB;
  border: 1.5px solid rgba(0, 123, 255, 0.15);
  border-radius: var(--radius-sm);
  padding: 18px 24px;
  font-size: 16px;
  color: var(--text-dark);
  font-family: 'Noto Sans SC', sans-serif;
  outline: none;
  transition: border-color 0.3s var(--ease-premium), box-shadow 0.3s var(--ease-premium);
}

.logistics-input::placeholder {
  color: var(--text-gray-light);
  font-size: 14px;
}

.logistics-input:focus {
  border-color: var(--accent-blue);
  box-shadow: 0 0 20px var(--accent-blue-glow);
  background: #FFFFFF;
}

.logistics-btn {
  background: linear-gradient(135deg, var(--accent-orange), #FF7733);
  color: #FFFFFF;
  border: none;
  border-radius: var(--radius-sm);
  padding: 18px 36px;
  font-size: 15px;
  font-weight: 700;
  cursor: pointer;
  white-space: nowrap;
  transition: all 0.3s var(--ease-premium);
  font-family: 'Noto Sans SC', sans-serif;
  box-shadow: 0 4px 16px var(--accent-orange-glow);
}

.logistics-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(255, 85, 0, 0.35);
}

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

/* Logistics Results */
.logistics-results {
  margin-top: 48px;
  display: none;
}

.logistics-results.active {
  display: block;
}

.logistics-result-item {
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 24px 0;
  border-bottom: 1px solid var(--border-subtle);
  opacity: 0;
  transform: translateX(-20px);
  transition: all 0.6s var(--ease-premium);
}

.logistics-result-item.show {
  opacity: 1;
  transform: translateX(0);
}

.logistics-result-item:last-child {
  border-bottom: none;
}

.logistics-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  background: var(--accent-blue-light);
  border: 1px solid var(--accent-blue-glow);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  flex-shrink: 0;
}

.logistics-info {
  flex: 1;
}

.logistics-name {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-heading);
  margin-bottom: 4px;
}

.logistics-name span {
  font-family: 'Orbitron', monospace;
  font-size: 11px;
  color: var(--accent-blue);
  letter-spacing: 1px;
  margin-left: 8px;
}

.logistics-detail {
  font-size: 14px;
  color: var(--text-gray);
  line-height: 1.6;
}

.logistics-time {
  font-family: 'JetBrains Mono', monospace;
  font-size: 14px;
  color: var(--accent-orange);
  font-weight: 700;
  white-space: nowrap;
  flex-shrink: 0;
}

/* ============================================
   SECTION 6: Price Calculator
   ============================================ */
.pricing {
  position: relative;
  overflow: hidden;
}

.pricing-bg {
  position: absolute;
  inset: 0;
  opacity: 0.06;
  filter: blur(1px);
}

.pricing-content {
  position: relative;
  z-index: 2;
}

.pricing-panel {
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(20px);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  padding: 60px;
  max-width: 1000px;
  margin: 48px auto 0;
  box-shadow: var(--shadow-float);
}

.pricing-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 32px;
  padding: 40px 0;
  border-bottom: 1px solid var(--border-subtle);
}

.pricing-row:last-child {
  border-bottom: none;
}

.pricing-original {
  text-align: center;
}

.pricing-original-label {
  font-size: 13px;
  color: var(--text-gray);
  margin-bottom: 8px;
}

.pricing-original-value {
  font-family: 'JetBrains Mono', monospace;
  font-size: 28px;
  color: var(--text-heading);
  font-weight: 700;
}

.pricing-discount {
  text-align: center;
  position: relative;
}

.pricing-discount-badge {
  font-family: 'Orbitron', monospace;
  font-size: 32px;
  font-weight: 700;
  color: #FF4444;
  animation: pulseDiscount 2s ease-in-out infinite;
}

@keyframes pulseDiscount {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.6; }
}

.pricing-arrow {
  font-size: 28px;
  color: var(--text-gray-light);
  opacity: 0.5;
}

.pricing-final {
  text-align: center;
  background: linear-gradient(135deg, #1A1D26 0%, #0F1117 100%);
  padding: 20px 32px;
  border-radius: var(--radius-md);
  border: 1px solid rgba(57, 255, 20, 0.15);
}

.pricing-final-label {
  font-size: 12px;
  color: var(--accent-blue);
  margin-bottom: 8px;
  letter-spacing: 2px;
}

.pricing-final-value {
  font-family: 'JetBrains Mono', monospace;
  font-size: 36px;
  font-weight: 700;
  color: var(--accent-green);
  text-shadow: 0 0 20px rgba(57, 255, 20, 0.3), 0 0 40px rgba(57, 255, 20, 0.15);
  animation: glowPulse 3s ease-in-out infinite;
}

@keyframes glowPulse {
  0%, 100% { text-shadow: 0 0 20px rgba(57, 255, 20, 0.3), 0 0 40px rgba(57, 255, 20, 0.15); }
  50% { text-shadow: 0 0 30px rgba(57, 255, 20, 0.4), 0 0 60px rgba(57, 255, 20, 0.2); }
}

.pricing-model-name {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-heading);
  margin-bottom: 4px;
}

.pricing-model-sub {
  font-size: 13px;
  color: var(--text-gray);
  margin-bottom: 20px;
}

.pricing-divider {
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border-subtle), transparent);
  margin: 8px 0;
}

/* ============================================
   Footer
   ============================================ */
.footer {
  padding: 60px 40px;
  text-align: center;
  border-top: 1px solid var(--border-subtle);
}

.footer-text {
  font-size: 13px;
  color: var(--text-gray);
  letter-spacing: 1px;
}

.footer-text span {
  color: var(--accent-orange);
  font-weight: 700;
}

/* ============================================
   Responsive
   ============================================ */
@media (max-width: 1024px) {
  .container {
    padding: 0 24px;
  }

  .section-padding {
    padding: 80px 0;
  }

  .gallery-card {
    flex-direction: column;
  }

  .gallery-card-text {
    flex: none;
    padding: 28px 24px;
  }

  .gallery-card-image {
    min-height: 240px;
  }

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

  .trust-grid {
    grid-template-columns: 1fr;
  }

  .pricing-row {
    flex-direction: column;
    gap: 24px;
  }

  .pricing-panel {
    padding: 40px 24px;
  }

  .trust-panel {
    padding: 40px 24px;
  }

  .logistics-card {
    padding: 40px 24px;
  }

  .logistics-input-wrap {
    flex-direction: column;
  }
}

@media (max-width: 768px) {
  .hero-title {
    font-size: 28px;
  }

  .hero-subtitle {
    font-size: 12px;
    letter-spacing: 3px;
  }

  .section-title {
    font-size: 26px;
  }

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

  .gallery-interior-split {
    grid-template-columns: 1fr;
  }

  .pricing-final-value {
    font-size: 28px;
  }

  .pricing-discount-badge {
    font-size: 24px;
  }

  .pricing-original-value {
    font-size: 22px;
  }

  .trust-panel-title {
    font-size: 22px;
  }
}