/* Root Variables */
:root {
  --primary-color: #1a73e8;
  --secondary-color: #ff9800;
  --accent-color: #4285f4;
  --dark-color: #2c3e50;
  --light-color: #f9f9f9;
  --text-color: #333333;
  --light-text: #ffffff;
  --border-color: #e0e0e0;
  --box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
  --transition: all 0.3s ease;
  --border-radius: 8px;
  --section-spacing: 80px;
}

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

body {
  font-family: 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  color: var(--text-color);
  line-height: 1.6;
  background-color: #fff;
}

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

ul {
  list-style: none;
}

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

.ptnba-container {
  width: 90%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 15px;
}

/* Button Styles */
.ptnba-btn {
  display: inline-block;
  padding: 10px 24px;
  border-radius: var(--border-radius);
  font-weight: 600;
  text-align: center;
  cursor: pointer;
  transition: var(--transition);
  border: none;
}

.ptnba-btn-primary {
  background-color: var(--primary-color);
  color: var(--light-text);
}

.ptnba-btn-primary:hover {
  background-color: #0d5bbc;
  transform: translateY(-2px);
}

.ptnba-btn-secondary {
  background-color: var(--secondary-color);
  color: var(--light-text);
}

.ptnba-btn-secondary:hover {
  background-color: #e68900;
  transform: translateY(-2px);
}

.ptnba-btn-outline {
  background-color: transparent;
  border: 2px solid var(--primary-color);
  color: var(--primary-color);
}

.ptnba-btn-outline:hover {
  background-color: var(--primary-color);
  color: var(--light-text);
}

.ptnba-btn-large {
  padding: 14px 32px;
  font-size: 1.1rem;
}

/* Header Styles */
.ptnba-header {
  background-color: #fff;
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.ptnba-nav-wrapper {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 80px;
}

.ptnba-logo {
  width: 180px;
  height: 46px;
  background-image: url('img/company-logo.png');
  background-repeat: no-repeat;
  background-size: contain;
  background-position: center;
}

.ptnba-nav-list {
  display: flex;
}

.ptnba-nav-item {
  margin: 0 15px;
  position: relative;
}

.ptnba-nav-item a {
  font-weight: 500;
  color: var(--dark-color);
  padding: 8px 0;
  position: relative;
}

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

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

.ptnba-nav-item.ptnba-active a {
  color: var(--primary-color);
}

.ptnba-mobile-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
}

.ptnba-mobile-toggle span {
  display: block;
  width: 25px;
  height: 3px;
  background-color: var(--dark-color);
  margin: 5px 0;
  transition: var(--transition);
}

/* Hero Section */
.ptnba-product-hero {
  position: relative;
  height: 500px;
  display: flex;
  align-items: center;
  overflow: hidden;
}

.ptnba-hero-backdrop {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
}

.ptnba-hero-backdrop-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: brightness(0.6);
}

.ptnba-hero-content {
  color: var(--light-text);
  text-align: center;
  width: 100%;
  z-index: 1;
}

.ptnba-hero-title {
  font-size: 3rem;
  font-weight: 700;
  margin-bottom: 20px;
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
}

.ptnba-hero-subtitle {
  font-size: 1.2rem;
  max-width: 600px;
  margin: 0 auto;
  text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.5);
}

/* Breadcrumb */
.ptnba-breadcrumb {
  padding: 15px 0;
  background-color: var(--light-color);
  border-bottom: 1px solid var(--border-color);
}

.ptnba-breadcrumb-list {
  display: flex;
  align-items: center;
}

.ptnba-breadcrumb-item {
  position: relative;
  font-size: 0.9rem;
}

.ptnba-breadcrumb-item:not(:last-child) {
  margin-right: 30px;
}

.ptnba-breadcrumb-item:not(:last-child):after {
  content: '›';
  position: absolute;
  right: -18px;
  top: 0;
  color: #999;
}

.ptnba-breadcrumb-item a {
  color: var(--primary-color);
}

.ptnba-breadcrumb-item a:hover {
  text-decoration: underline;
}

.ptnba-breadcrumb-item.ptnba-active {
  color: #666;
}

/* Section Headers */
.ptnba-section-header {
  text-align: center;
  margin-bottom: 50px;
}

.ptnba-section-tagline {
  display: inline-block;
  font-size: 0.9rem;
  font-weight: 600;
  text-transform: uppercase;
  color: var(--secondary-color);
  margin-bottom: 10px;
  letter-spacing: 1px;
}

.ptnba-section-title {
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--dark-color);
  margin-bottom: 15px;
}

.ptnba-section-description {
  max-width: 700px;
  margin: 0 auto;
  color: #666;
}

/* Product List Section */
.ptnba-product-list {
  padding: var(--section-spacing) 0;
}

.ptnba-product-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.ptnba-product-card {
  background-color: #fff;
  border-radius: var(--border-radius);
  overflow: hidden;
  box-shadow: var(--box-shadow);
  transition: var(--transition);
}

.ptnba-product-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
}

.ptnba-product-image-container {
  height: 250px;
  overflow: hidden;
}

.ptnba-product-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.ptnba-product-card:hover .ptnba-product-image {
  transform: scale(1.05);
}

.ptnba-product-content {
  padding: 25px;
}

.ptnba-product-title {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 15px;
  color: var(--dark-color);
}

.ptnba-product-description {
  color: #666;
  margin-bottom: 20px;
  font-size: 0.95rem;
}

/* Brand Partnerships Card */
.ptnba-brand-partnerships-card .ptnba-btn-primary {
  margin-top: 10px;
}

/* Quality Benefits Section */
.ptnba-quality-benefits {
  padding: var(--section-spacing) 0;
  background-color: var(--light-color);
}

.ptnba-benefits-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 30px;
}

.ptnba-benefit-card {
  display: flex;
  background-color: #fff;
  border-radius: var(--border-radius);
  overflow: hidden;
  box-shadow: var(--box-shadow);
}

.ptnba-benefit-image-container {
  flex: 0 0 40%;
  overflow: hidden;
}

.ptnba-benefit-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.ptnba-benefit-content {
  flex: 1;
  padding: 20px;
}

.ptnba-benefit-title {
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 10px;
  color: var(--dark-color);
}

.ptnba-benefit-text {
  color: #666;
  font-size: 0.9rem;
}

/* Vehicle Guide Section */
.ptnba-vehicle-guide {
  padding: var(--section-spacing) 0;
}

.ptnba-vehicle-categories {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
  margin-bottom: 40px;
}

.ptnba-vehicle-category {
  background-color: #fff;
  border-radius: var(--border-radius);
  padding: 25px;
  box-shadow: var(--box-shadow);
}

.ptnba-vehicle-type {
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--primary-color);
  margin-bottom: 20px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--primary-color);
}

.ptnba-vehicle-item {
  display: flex;
  justify-content: space-between;
  padding: 10px 0;
  border-bottom: 1px solid var(--border-color);
}

.ptnba-vehicle-name {
  font-weight: 500;
}

.ptnba-tire-recommendation {
  color: #666;
  font-size: 0.9rem;
}

.ptnba-note-box {
  background-color: #f0f7ff;
  border-left: 4px solid var(--primary-color);
  padding: 20px;
  border-radius: 0 var(--border-radius) var(--border-radius) 0;
  margin-bottom: 30px;
}

.ptnba-note-title {
  color: var(--primary-color);
  margin-bottom: 10px;
  font-size: 1.1rem;
}

.ptnba-note-list li {
  margin-bottom: 8px;
  position: relative;
  padding-left: 20px;
  font-size: 0.95rem;
}

.ptnba-note-list li:before {
  content: "•";
  color: var(--primary-color);
  position: absolute;
  left: 0;
}

.ptnba-vehicle-guide-action {
  text-align: center;
  margin-top: 30px;
}

/* Brand Partnership Teaser */
.ptnba-brand-partnership-teaser {
  padding: var(--section-spacing) 0;
  background-color: var(--light-color);
}

.ptnba-partnership-box {
  display: flex;
  align-items: center;
  background-color: #fff;
  border-radius: var(--border-radius);
  overflow: hidden;
  box-shadow: var(--box-shadow);
}

.ptnba-partnership-content {
  flex: 1;
  padding: 40px;
}

.ptnba-partnership-title {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--dark-color);
  margin-bottom: 20px;
}

.ptnba-partnership-text {
  margin-bottom: 30px;
  color: #666;
}

.ptnba-partnership-image-container {
  flex: 0 0 40%;
  height: 300px;
}

.ptnba-partnership-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* CTA Section */
.ptnba-cta-section {
  padding: var(--section-spacing) 0;
}

.ptnba-cta-box {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: linear-gradient(135deg, var(--primary-color), #185abc);
  border-radius: var(--border-radius);
  padding: 50px;
  color: var(--light-text);
}

.ptnba-cta-content {
  max-width: 70%;
}

.ptnba-cta-title {
  font-size: 1.8rem;
  font-weight: 700;
  margin-bottom: 15px;
}

.ptnba-cta-text {
  opacity: 0.9;
}

/* Footer Styles */
.ptnba-footer {
  background-color: #222;
  color: #bbb;
}

.ptnba-footer-main {
  padding: 70px 0 40px;
}

.ptnba-footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 30px;
}

.ptnba-footer-logo {
  filter: brightness(0) invert(1);
  opacity: 0.8;
  margin-bottom: 20px;
}

.ptnba-footer-text {
  margin-bottom: 25px;
  font-size: 0.95rem;
  line-height: 1.7;
}

.ptnba-social-links {
  display: flex;
  gap: 15px;
}

.ptnba-social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background-color: rgba(255, 255, 255, 0.1);
  color: #fff;
  transition: var(--transition);
}

.ptnba-social-link:hover {
  background-color: var(--primary-color);
  transform: translateY(-3px);
}

.ptnba-footer-title {
  color: #fff;
  font-size: 1.1rem;
  margin-bottom: 25px;
  font-weight: 600;
}

.ptnba-footer-nav li {
  margin-bottom: 12px;
}

.ptnba-footer-nav a {
  transition: var(--transition);
}

.ptnba-footer-nav a:hover {
  color: #fff;
  padding-left: 5px;
}

.ptnba-contact-info p {
  margin-bottom: 15px;
  font-style: normal;
}

.ptnba-contact-info a {
  color: var(--secondary-color);
}

.ptnba-contact-info a:hover {
  text-decoration: underline;
}

.ptnba-footer-bottom {
  padding: 20px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  font-size: 0.9rem;
}

.ptnba-footer-bottom .ptnba-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.ptnba-footer-legal {
  display: flex;
  gap: 20px;
}

.ptnba-footer-legal a:hover {
  color: #fff;
}

/* Responsive Styles */
@media (max-width: 1200px) {
  .ptnba-product-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .ptnba-benefits-grid {
    grid-template-columns: 1fr;
  }
  
  .ptnba-vehicle-categories {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .ptnba-footer-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 40px 30px;
  }
}

@media (max-width: 992px) {
  :root {
    --section-spacing: 60px;
  }
  
  .ptnba-hero-title {
    font-size: 2.5rem;
  }
  
  .ptnba-section-title {
    font-size: 2rem;
  }
  
  .ptnba-partnership-box {
    flex-direction: column;
  }
  
  .ptnba-partnership-image-container {
    flex: 0 0 100%;
    height: 250px;
    order: -1;
  }
  
  .ptnba-cta-box {
    flex-direction: column;
    text-align: center;
    padding: 40px 30px;
  }
  
  .ptnba-cta-content {
    max-width: 100%;
    margin-bottom: 30px;
  }
}

@media (max-width: 768px) {
  .ptnba-nav {
    display: none;
  }
  
  .ptnba-mobile-toggle {
    display: block;
  }
  
  .ptnba-product-hero {
    height: 400px;
  }
  
  .ptnba-hero-title {
    font-size: 2rem;
  }
  
  .ptnba-hero-subtitle {
    font-size: 1rem;
  }
  
  .ptnba-product-grid {
    grid-template-columns: 1fr;
  }
  
  .ptnba-vehicle-categories {
    grid-template-columns: 1fr;
  }
  
  .ptnba-benefit-card {
    flex-direction: column;
  }
  
  .ptnba-benefit-image-container {
    height: 200px;
  }
  
  .ptnba-footer-grid {
    grid-template-columns: 1fr;
  }
  
  .ptnba-footer-bottom .ptnba-container {
    flex-direction: column;
    gap: 15px;
  }
}

@media (max-width: 576px) {
  :root {
    --section-spacing: 50px;
  }
  
  .ptnba-product-hero {
    height: 350px;
  }
  
  .ptnba-hero-title {
    font-size: 1.8rem;
  }
  
  .ptnba-section-title {
    font-size: 1.8rem;
  }
  
  .ptnba-partnership-title,
  .ptnba-cta-title {
    font-size: 1.5rem;
  }
}