/* ============================================
   新能汽车官网 - 主样式表
   NE Vehicle Website - Main Stylesheet
   Design: Modern NEV brand, deep blue + green accent
   ============================================ */

/* --- CSS Variables --- */
:root {
    --color-primary: #0a1628;
    --color-primary-light: #132244;
    --color-accent: #00d4aa;
    --color-accent-dark: #00b894;
    --color-accent-gradient: linear-gradient(135deg, #00d4aa 0%, #00a8cc 100%);
    --color-white: #ffffff;
    --color-light: #f4f7fa;
    --color-gray-100: #e8edf2;
    --color-gray-200: #c8d0d8;
    --color-gray-300: #9aa4b0;
    --color-gray-400: #6b7a88;
    --color-gray-500: #4a5568;
    --color-text: #1a202c;
    --color-text-light: #6b7a88;
    --color-border: #e2e8f0;
    --color-success: #00d4aa;
    --color-warning: #f6ad55;
    --color-error: #fc8181;
    --font-primary: 'Segoe UI', -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', sans-serif;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
    --shadow-md: 0 4px 20px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 40px rgba(0,0,0,0.15);
    --shadow-xl: 0 20px 60px rgba(0,0,0,0.2);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 28px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --max-width: 1280px;
}

/* --- Reset & Base --- */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
    font-family: var(--font-primary);
    color: var(--color-text);
    background: var(--color-white);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
img { max-width: 100%; height: auto; display: block; }
button { cursor: pointer; font-family: inherit; border: none; background: none; }
input, textarea, select { font-family: inherit; font-size: 1rem; }

/* --- Container --- */
.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
}

/* --- Header --- */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(10, 22, 40, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255,255,255,0.06);
    transition: var(--transition);
}
.header-container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}
.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    z-index: 1001;
}
.logo-icon {
    width: 40px;
    height: 40px;
    background: var(--color-accent-gradient);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    color: var(--color-white);
}
.logo-text {
    font-size: 1.35rem;
    font-weight: 700;
    color: var(--color-white);
    letter-spacing: 1px;
}
.main-nav ul {
    display: flex;
    gap: 4px;
}
.main-nav a {
    padding: 8px 18px;
    color: rgba(255,255,255,0.75);
    font-size: 0.9rem;
    font-weight: 500;
    border-radius: 8px;
    transition: var(--transition);
    position: relative;
}
.main-nav a:hover, .main-nav a.active {
    color: var(--color-white);
    background: rgba(255,255,255,0.08);
}
.main-nav a::after {
    content: '';
    position: absolute;
    bottom: 2px;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background: var(--color-accent);
    border-radius: 1px;
    transition: var(--transition);
}
.main-nav a:hover::after, .main-nav a.active::after { width: 20px; }

.header-actions {
    display: flex;
    align-items: center;
    gap: 16px;
}
.language-switcher {
    position: relative;
}
.lang-btn {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 8px 14px;
    color: rgba(255,255,255,0.75);
    font-size: 0.85rem;
    border-radius: 8px;
    transition: var(--transition);
}
.lang-btn:hover { background: rgba(255,255,255,0.08); color: var(--color-white); }
.lang-dropdown {
    position: absolute;
    top: 100%;
    right: 0;
    margin-top: 4px;
    background: var(--color-white);
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-lg);
    min-width: 120px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(8px);
    transition: var(--transition);
    overflow: hidden;
}
.language-switcher:hover .lang-dropdown,
.lang-dropdown:hover { opacity: 1; visibility: visible; transform: translateY(0); }
.lang-dropdown a {
    display: block;
    padding: 10px 16px;
    color: var(--color-text);
    font-size: 0.9rem;
    transition: var(--transition);
}
.lang-dropdown a:hover { background: var(--color-light); color: var(--color-accent-dark); }
.lang-dropdown a.active { color: var(--color-accent-dark); font-weight: 600; }

.mobile-menu-btn {
    display: none;
    font-size: 1.4rem;
    color: var(--color-white);
    padding: 8px;
}

/* --- Mobile Nav --- */
.mobile-nav-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.5);
    z-index: 2000;
}
.mobile-nav {
    display: none;
    position: fixed;
    top: 0;
    right: -300px;
    width: 280px;
    height: 100%;
    background: var(--color-primary);
    z-index: 2001;
    transition: right 0.3s ease;
    padding: 24px;
}
.mobile-nav.open { right: 0; }
.mobile-nav-overlay.open { display: block; }
.mobile-nav-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-bottom: 20px;
    margin-bottom: 20px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
    color: var(--color-white);
    font-size: 1.1rem;
    font-weight: 600;
}
.mobile-nav-header button { color: var(--color-white); font-size: 1.3rem; }
.mobile-nav ul li a {
    display: block;
    padding: 14px 0;
    color: rgba(255,255,255,0.75);
    font-size: 1rem;
    border-bottom: 1px solid rgba(255,255,255,0.05);
    transition: var(--transition);
}
.mobile-nav ul li a:hover { color: var(--color-accent); padding-left: 8px; }
.mobile-lang {
    margin-top: 24px;
    text-align: center;
}
.mobile-lang a {
    color: rgba(255,255,255,0.6);
    padding: 8px 12px;
    font-size: 0.9rem;
}
.mobile-lang a.active { color: var(--color-accent); font-weight: 600; }
.mobile-lang span { color: rgba(255,255,255,0.3); padding: 0 4px; }

/* --- Hero Section (Homepage) --- */
.hero-section {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    background: var(--color-primary);
}
.hero-bg {
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse at 20% 50%, rgba(0,212,170,0.15) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 50%, rgba(0,168,204,0.12) 0%, transparent 50%),
        radial-gradient(ellipse at 50% 100%, rgba(10,22,40,1) 0%, transparent 40%);
}
.hero-particles {
    position: absolute;
    inset: 0;
    overflow: hidden;
}
.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    padding: 120px 24px 60px;
    max-width: 900px;
}
.hero-badge {
    display: inline-block;
    padding: 8px 24px;
    background: rgba(0,212,170,0.15);
    border: 1px solid rgba(0,212,170,0.3);
    border-radius: 50px;
    color: var(--color-accent);
    font-size: 0.85rem;
    font-weight: 500;
    margin-bottom: 32px;
    letter-spacing: 2px;
    text-transform: uppercase;
    animation: fadeInDown 0.8s ease forwards;
}
.hero-content h1 {
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 800;
    color: var(--color-white);
    line-height: 1.15;
    margin-bottom: 24px;
    animation: fadeInUp 0.8s ease 0.2s forwards;
    opacity: 0;
}
.hero-content h1 span {
    background: var(--color-accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.hero-subtitle {
    font-size: clamp(1rem, 2vw, 1.3rem);
    color: rgba(255,255,255,0.6);
    margin-bottom: 40px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    animation: fadeInUp 0.8s ease 0.4s forwards;
    opacity: 0;
}
.hero-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
    animation: fadeInUp 0.8s ease 0.6s forwards;
    opacity: 0;
}
.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 36px;
    background: var(--color-accent-gradient);
    color: var(--color-white);
    font-size: 1rem;
    font-weight: 600;
    border-radius: 50px;
    transition: var(--transition);
    box-shadow: 0 4px 20px rgba(0,212,170,0.3);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 30px rgba(0,212,170,0.4); }
.btn-secondary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 36px;
    background: transparent;
    color: var(--color-white);
    font-size: 1rem;
    font-weight: 600;
    border-radius: 50px;
    border: 2px solid rgba(255,255,255,0.2);
    transition: var(--transition);
}
.btn-secondary:hover { border-color: var(--color-white); background: rgba(255,255,255,0.05); transform: translateY(-2px); }

.hero-scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    color: rgba(255,255,255,0.4);
    font-size: 0.8rem;
    letter-spacing: 2px;
    animation: bounce 2s infinite;
}
.hero-scroll-indicator .scroll-line {
    width: 1px;
    height: 40px;
    background: linear-gradient(to bottom, rgba(255,255,255,0.4), transparent);
}

/* --- Particle animation --- */
.particle {
    position: absolute;
    width: 4px;
    height: 4px;
    background: rgba(0,212,170,0.4);
    border-radius: 50%;
    animation: float linear infinite;
}

/* --- Animations --- */
@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}
@keyframes fadeInDown {
    from { opacity: 0; transform: translateY(-20px); }
    to { opacity: 1; transform: translateY(0); }
}
@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateX(-50%) translateY(0); }
    40% { transform: translateX(-50%) translateY(-10px); }
    60% { transform: translateX(-50%) translateY(-5px); }
}
@keyframes float {
    0% { transform: translateY(0) translateX(0); opacity: 0; }
    10% { opacity: 1; }
    90% { opacity: 1; }
    100% { transform: translateY(-100vh) translateX(100px); opacity: 0; }
}
@keyframes slideInLeft {
    from { opacity: 0; transform: translateX(-60px); }
    to { opacity: 1; transform: translateX(0); }
}
@keyframes slideInRight {
    from { opacity: 0; transform: translateX(60px); }
    to { opacity: 1; transform: translateX(0); }
}
@keyframes scaleIn {
    from { opacity: 0; transform: scale(0.9); }
    to { opacity: 1; transform: scale(1); }
}

/* --- Section Common --- */
.section {
    padding: 100px 24px;
    max-width: var(--max-width);
    margin: 0 auto;
}
.section-header {
    text-align: center;
    margin-bottom: 60px;
}
.section-tag {
    display: inline-block;
    padding: 6px 20px;
    background: rgba(0,212,170,0.1);
    border-radius: 50px;
    color: var(--color-accent-dark);
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 16px;
    letter-spacing: 1px;
}
.section-header h2 {
    font-size: clamp(2rem, 4vw, 2.8rem);
    font-weight: 800;
    color: var(--color-primary);
    margin-bottom: 16px;
}
.section-header p {
    font-size: 1.1rem;
    color: var(--color-text-light);
    max-width: 600px;
    margin: 0 auto;
}

/* --- Featured Vehicles Section --- */
.featured-section {
    background: var(--color-light);
}
.vehicle-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 30px;
}
.vehicle-card {
    background: var(--color-white);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    cursor: pointer;
    position: relative;
}
.vehicle-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}
.vehicle-card-image {
    position: relative;
    height: 240px;
    background: var(--color-light);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}
.vehicle-card-image .placeholder-icon {
    font-size: 4rem;
    color: var(--color-gray-300);
}
.vehicle-card-image .vehicle-badge {
    position: absolute;
    top: 16px;
    left: 16px;
    padding: 4px 14px;
    background: var(--color-accent-gradient);
    border-radius: 50px;
    color: var(--color-white);
    font-size: 0.8rem;
    font-weight: 600;
}
.vehicle-card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}
.vehicle-card:hover .vehicle-card-image img { transform: scale(1.05); }
.vehicle-card-body {
    padding: 24px;
}
.vehicle-card-body h3 {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 4px;
}
.vehicle-card-body .vehicle-subtitle {
    color: var(--color-text-light);
    font-size: 0.9rem;
    margin-bottom: 16px;
}
.vehicle-card-specs {
    display: flex;
    gap: 24px;
    padding: 16px 0;
    border-top: 1px solid var(--color-border);
    margin-bottom: 16px;
}
.vehicle-card-specs .spec-item {
    text-align: center;
}
.vehicle-card-specs .spec-item .spec-value {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--color-primary);
}
.vehicle-card-specs .spec-item .spec-label {
    font-size: 0.8rem;
    color: var(--color-text-light);
}
.vehicle-card-actions {
    display: flex;
    gap: 12px;
}
.vehicle-card-actions .btn-outline {
    flex: 1;
    padding: 10px;
    text-align: center;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    font-weight: 500;
    transition: var(--transition);
}
.vehicle-card-actions .btn-outline:hover {
    border-color: var(--color-accent);
    color: var(--color-accent-dark);
}
.vehicle-card-actions .btn-solid {
    flex: 1;
    padding: 10px;
    text-align: center;
    background: var(--color-accent-gradient);
    color: var(--color-white);
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    font-weight: 500;
    transition: var(--transition);
}
.vehicle-card-actions .btn-solid:hover { opacity: 0.9; }
.view-all-link {
    display: block;
    text-align: center;
    margin-top: 40px;
}
.view-all-link a {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 36px;
    background: var(--color-primary);
    color: var(--color-white);
    border-radius: 50px;
    font-weight: 600;
    transition: var(--transition);
}
.view-all-link a:hover { background: var(--color-primary-light); transform: translateY(-2px); }

/* --- About Section --- */
.about-section {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    padding: 100px 24px;
    max-width: var(--max-width);
    margin: 0 auto;
}
.about-image {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    height: 400px;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
}
.about-image .about-placeholder {
    text-align: center;
    color: rgba(255,255,255,0.3);
}
.about-image .about-placeholder i { font-size: 5rem; margin-bottom: 16px; }
.about-image .about-placeholder span { display: block; font-size: 1rem; }
.about-content h2 {
    font-size: clamp(1.8rem, 3vw, 2.5rem);
    font-weight: 800;
    color: var(--color-primary);
    margin-bottom: 20px;
}
.about-content p {
    color: var(--color-text-light);
    font-size: 1.05rem;
    line-height: 1.8;
    margin-bottom: 24px;
}
.about-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-top: 32px;
}
.about-stat-item {
    text-align: center;
    padding: 20px;
    background: var(--color-light);
    border-radius: var(--radius-sm);
}
.about-stat-item .stat-number {
    font-size: 2rem;
    font-weight: 800;
    background: var(--color-accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.about-stat-item .stat-label {
    font-size: 0.85rem;
    color: var(--color-text-light);
    margin-top: 4px;
}

/* --- News Section --- */
.news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}
.news-card {
    background: var(--color-white);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    border: 1px solid var(--color-border);
}
.news-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.news-card-image {
    height: 200px;
    background: var(--color-gray-100);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}
.news-card-image i { font-size: 3rem; color: var(--color-gray-300); }
.news-card-image img { width: 100%; height: 100%; object-fit: cover; }
.news-card-body { padding: 24px; }
.news-card-meta {
    display: flex;
    gap: 16px;
    font-size: 0.85rem;
    color: var(--color-text-light);
    margin-bottom: 12px;
}
.news-card-body h3 { font-size: 1.15rem; font-weight: 700; margin-bottom: 12px; line-height: 1.4; }
.news-card-body p { color: var(--color-text-light); font-size: 0.95rem; margin-bottom: 16px; line-height: 1.6; }
.news-card-body .read-more {
    color: var(--color-accent-dark);
    font-weight: 600;
    font-size: 0.9rem;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: var(--transition);
}
.news-card-body .read-more:hover { gap: 10px; }

/* --- Page Banner --- */
.page-banner {
    position: relative;
    padding: 160px 24px 80px;
    text-align: center;
    background: var(--color-primary);
    overflow: hidden;
}
.page-banner::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse at 30% 50%, rgba(0,212,170,0.12) 0%, transparent 50%),
        radial-gradient(ellipse at 70% 50%, rgba(0,168,204,0.1) 0%, transparent 50%);
}
.page-banner h1 {
    position: relative;
    z-index: 1;
    font-size: clamp(2.2rem, 5vw, 3.5rem);
    font-weight: 800;
    color: var(--color-white);
    margin-bottom: 16px;
}
.page-banner p {
    position: relative;
    z-index: 1;
    font-size: 1.1rem;
    color: rgba(255,255,255,0.6);
    max-width: 500px;
    margin: 0 auto;
}

/* --- Brand Page --- */
.brand-section {
    padding: 80px 24px;
    max-width: var(--max-width);
    margin: 0 auto;
}
.brand-mission-vision {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    margin-bottom: 80px;
}
.brand-card {
    padding: 40px;
    background: var(--color-light);
    border-radius: var(--radius-md);
    transition: var(--transition);
}
.brand-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.brand-card .card-icon {
    font-size: 2.5rem;
    margin-bottom: 20px;
    color: var(--color-accent-dark);
}
.brand-card h3 { font-size: 1.5rem; font-weight: 700; margin-bottom: 16px; }
.brand-card p { color: var(--color-text-light); line-height: 1.8; }
.values-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 24px;
    margin-bottom: 80px;
}
.value-card {
    text-align: center;
    padding: 40px 24px;
    background: var(--color-white);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
    transition: var(--transition);
}
.value-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: var(--color-accent); }
.value-card .value-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 20px;
    background: var(--color-accent-gradient);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: var(--color-white);
}
.value-card h4 { font-size: 1.15rem; font-weight: 700; margin-bottom: 8px; }
.value-card p { color: var(--color-text-light); font-size: 0.9rem; }

/* --- Products Page --- */
.products-filter {
    display: flex;
    gap: 12px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 40px;
}
.filter-btn {
    padding: 10px 24px;
    border: 1px solid var(--color-border);
    border-radius: 50px;
    font-size: 0.9rem;
    font-weight: 500;
    transition: var(--transition);
    background: var(--color-white);
}
.filter-btn:hover, .filter-btn.active {
    background: var(--color-primary);
    color: var(--color-white);
    border-color: var(--color-primary);
}

/* --- Franchise Page --- */
.franchise-benefits {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 24px;
    margin-bottom: 60px;
}
.benefit-card {
    text-align: center;
    padding: 40px 24px;
    background: var(--color-light);
    border-radius: var(--radius-md);
    transition: var(--transition);
}
.benefit-card:hover { transform: translateY(-4px); }
.benefit-card .benefit-icon {
    width: 56px;
    height: 56px;
    margin: 0 auto 16px;
    background: var(--color-accent-gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    color: var(--color-white);
}
.benefit-card h4 { font-size: 1.15rem; font-weight: 700; margin-bottom: 8px; }
.benefit-card p { color: var(--color-text-light); font-size: 0.9rem; }

.process-steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 20px;
    margin-bottom: 60px;
}
.process-step {
    text-align: center;
    position: relative;
}
.process-step .step-number {
    width: 48px;
    height: 48px;
    margin: 0 auto 16px;
    background: var(--color-accent-gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--color-white);
}
.process-step h5 { font-size: 1rem; font-weight: 600; }

/* --- Forms --- */
.form-container {
    max-width: 640px;
    margin: 0 auto;
    background: var(--color-white);
    padding: 40px;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-border);
}
.form-group {
    margin-bottom: 20px;
}
.form-group label {
    display: block;
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 6px;
    color: var(--color-text);
}
.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    transition: var(--transition);
    background: var(--color-white);
    color: var(--color-text);
}
.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(0,212,170,0.15);
}
.form-group textarea { min-height: 120px; resize: vertical; }
.form-group .error-msg {
    display: none;
    color: var(--color-error);
    font-size: 0.85rem;
    margin-top: 4px;
}
.form-group.error input,
.form-group.error textarea,
.form-group.error select { border-color: var(--color-error); }
.form-group.error .error-msg { display: block; }
.form-submit {
    width: 100%;
    padding: 14px;
    background: var(--color-accent-gradient);
    color: var(--color-white);
    font-size: 1rem;
    font-weight: 600;
    border-radius: var(--radius-sm);
    transition: var(--transition);
}
.form-submit:hover { opacity: 0.9; transform: translateY(-2px); box-shadow: 0 4px 16px rgba(0,212,170,0.3); }
.form-success {
    display: none;
    text-align: center;
    padding: 40px;
}
.form-success .success-icon {
    font-size: 3rem;
    color: var(--color-success);
    margin-bottom: 16px;
}
.form-success h3 { font-size: 1.3rem; font-weight: 700; margin-bottom: 8px; }
.form-success p { color: var(--color-text-light); }

/* --- Contact Page --- */
.contact-section {
    padding: 80px 24px;
    max-width: var(--max-width);
    margin: 0 auto;
}
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: start;
}
.contact-info-card {
    padding: 40px;
    background: var(--color-light);
    border-radius: var(--radius-md);
}
.contact-info-card h3 { font-size: 1.5rem; font-weight: 700; margin-bottom: 30px; }
.contact-info-item {
    display: flex;
    gap: 16px;
    margin-bottom: 24px;
    align-items: flex-start;
}
.contact-info-item .contact-icon {
    width: 48px;
    height: 48px;
    min-width: 48px;
    background: var(--color-accent-gradient);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    color: var(--color-white);
}
.contact-info-item h4 { font-size: 1rem; font-weight: 600; margin-bottom: 4px; }
.contact-info-item p { color: var(--color-text-light); font-size: 0.95rem; }

/* --- News List Page --- */
.news-list-section {
    padding: 80px 24px;
    max-width: var(--max-width);
    margin: 0 auto;
}
.news-toolbar {
    display: flex;
    gap: 16px;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    margin-bottom: 40px;
}
.news-search-box {
    display: flex;
    gap: 8px;
}
.news-search-box input {
    padding: 10px 16px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    width: 250px;
    transition: var(--transition);
}
.news-search-box input:focus { border-color: var(--color-accent); outline: none; }
.news-search-box button {
    padding: 10px 20px;
    background: var(--color-primary);
    color: var(--color-white);
    border-radius: var(--radius-sm);
    transition: var(--transition);
}
.news-search-box button:hover { background: var(--color-primary-light); }
.news-sort {
    display: flex;
    gap: 8px;
}
.sort-btn {
    padding: 8px 16px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    transition: var(--transition);
    background: var(--color-white);
}
.sort-btn:hover, .sort-btn.active { background: var(--color-primary); color: var(--color-white); border-color: var(--color-primary); }

/* --- News Detail Page --- */
.news-detail {
    padding: 80px 24px;
    max-width: 800px;
    margin: 0 auto;
}
.news-detail-header { margin-bottom: 40px; }
.news-detail-header h1 { font-size: 2.2rem; font-weight: 800; margin-bottom: 16px; line-height: 1.3; }
.news-detail-meta {
    display: flex;
    gap: 24px;
    color: var(--color-text-light);
    font-size: 0.9rem;
}
.news-detail-content { line-height: 1.9; font-size: 1.05rem; color: var(--color-text); }
.news-detail-content p { margin-bottom: 20px; }
.news-detail-content img { border-radius: var(--radius-sm); margin: 24px 0; }

/* --- Pagination --- */
.pagination {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-top: 40px;
}
.pagination a, .pagination span {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--color-border);
    font-size: 0.9rem;
    transition: var(--transition);
}
.pagination a:hover { border-color: var(--color-accent); color: var(--color-accent-dark); }
.pagination .current { background: var(--color-primary); color: var(--color-white); border-color: var(--color-primary); }

/* --- Footer --- */
.site-footer {
    background: var(--color-primary);
    color: rgba(255,255,255,0.7);
    padding: 60px 24px 0;
}
.footer-container {
    max-width: var(--max-width);
    margin: 0 auto;
}
.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1fr;
    gap: 40px;
    padding-bottom: 40px;
    border-bottom: 1px solid rgba(255,255,255,0.08);
}
.footer-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--color-white);
    margin-bottom: 16px;
}
.footer-logo i {
    width: 36px;
    height: 36px;
    background: var(--color-accent-gradient);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
}
.footer-col p { font-size: 0.9rem; line-height: 1.7; }
.footer-col h4 {
    color: var(--color-white);
    font-size: 1.05rem;
    font-weight: 600;
    margin-bottom: 20px;
}
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul li a {
    color: rgba(255,255,255,0.6);
    font-size: 0.9rem;
    transition: var(--transition);
}
.footer-col ul li a:hover { color: var(--color-accent); padding-left: 4px; }
.footer-contact li {
    display: flex;
    gap: 10px;
    align-items: flex-start;
    color: rgba(255,255,255,0.6);
    font-size: 0.9rem;
}
.footer-contact li i {
    margin-top: 4px;
    color: var(--color-accent);
}
.social-links {
    display: flex;
    gap: 12px;
}
.social-icon {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: 1px solid rgba(255,255,255,0.15);
    display: flex;
    align-items: center;
    justify-content: center;
    color: rgba(255,255,255,0.6);
    transition: var(--transition);
}
.social-icon:hover {
    border-color: var(--color-accent);
    color: var(--color-accent);
    background: rgba(0,212,170,0.1);
}
.footer-bottom {
    padding: 24px 0;
    text-align: center;
    font-size: 0.85rem;
    color: rgba(255,255,255,0.4);
}
.footer-bottom p { margin-bottom: 4px; }

/* --- Back to Top --- */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 48px;
    height: 48px;
    background: var(--color-accent-gradient);
    color: var(--color-white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    box-shadow: var(--shadow-md);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: var(--transition);
    z-index: 999;
}
.back-to-top.visible { opacity: 1; visibility: visible; transform: translateY(0); }
.back-to-top:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }

/* --- Breadcrumb --- */
.breadcrumb {
    padding: 16px 24px;
    max-width: var(--max-width);
    margin: 80px auto 0;
    font-size: 0.9rem;
    color: var(--color-text-light);
}
.breadcrumb a { color: var(--color-text-light); transition: var(--transition); }
.breadcrumb a:hover { color: var(--color-accent-dark); }
.breadcrumb span { color: var(--color-text); }
.breadcrumb .separator { margin: 0 8px; color: var(--color-gray-300); }

/* --- Toast Notification --- */
.toast {
    position: fixed;
    top: 100px;
    right: 24px;
    padding: 16px 24px;
    border-radius: var(--radius-sm);
    color: var(--color-white);
    font-weight: 500;
    font-size: 0.95rem;
    z-index: 9999;
    opacity: 0;
    transform: translateX(100px);
    transition: var(--transition);
    box-shadow: var(--shadow-lg);
}
.toast.show { opacity: 1; transform: translateX(0); }
.toast.success { background: var(--color-accent-gradient); }
.toast.error { background: var(--color-error); }

/* --- Loading Spinner --- */
.loading-spinner {
    display: flex;
    justify-content: center;
    padding: 40px;
}
.spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--color-gray-100);
    border-top-color: var(--color-accent);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ============================================
   Responsive Design
   ============================================ */

/* Tablet */
@media (max-width: 1024px) {
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .contact-grid { grid-template-columns: 1fr; }
    .about-section { grid-template-columns: 1fr; }
    .about-image { order: -1; }
    .brand-mission-vision { grid-template-columns: 1fr; }
}

/* Mobile */
@media (max-width: 768px) {
    .main-nav { display: none; }
    .mobile-menu-btn { display: block; }
    .mobile-nav { display: block; }
    .mobile-nav-overlay { display: none; }
    .mobile-nav-overlay.open { display: block; }

    .hero-section { min-height: 90vh; }
    .hero-content { padding: 100px 20px 40px; }

    .section { padding: 60px 20px; }
    .vehicle-grid { grid-template-columns: 1fr; }

    .footer-grid { grid-template-columns: 1fr; gap: 30px; }
    .about-stats { grid-template-columns: repeat(2, 1fr); }

    .news-toolbar { flex-direction: column; align-items: stretch; }
    .news-search-box input { width: 100%; }

    .form-container { padding: 24px; }

    .page-banner { padding: 130px 20px 60px; }

    .contact-grid { gap: 30px; }

    .products-filter { gap: 8px; }
    .filter-btn { padding: 8px 16px; font-size: 0.85rem; }

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

/* Small Mobile */
@media (max-width: 480px) {
    .hero-content h1 { font-size: 2rem; }
    .hero-actions { flex-direction: column; align-items: stretch; }
    .btn-primary, .btn-secondary { justify-content: center; }
    .about-stats { grid-template-columns: 1fr; }
}