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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    color: #1a1a1a;
    line-height: 1.6;
    background: #eef1f5;
    font-size: 15px;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

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

ul {
    list-style: none;
}

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

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

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: 22px 0;
    background: transparent;
    transition: all 0.3s ease;
}

.header.scrolled {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: 0 2px 15px rgba(0,0,0,0.08);
    padding: 15px 0;
}

.header.scrolled .logo,
.header.scrolled .main-nav ul li a {
    color: #1a1a1a;
}

.header.scrolled .main-nav ul li a.active::after,
.header.scrolled .main-nav ul li a:hover::after {
    background: #1a1a1a;
}

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

.logo {
    font-size: 24px;
    font-weight: 800;
    color: #fff;
    letter-spacing: -0.5px;
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
}

.logo-img {
    width: 40px;
    height: 40px;
    object-fit: contain;
}

.header.scrolled .logo {
    color: #1a1a1a;
}

.main-nav ul {
    display: flex;
    align-items: center;
    gap: 32px;
}

.main-nav ul li a {
    color: #fff;
    font-size: 14px;
    font-weight: 500;
    position: relative;
    padding: 5px 0;
    transition: opacity 0.3s;
}

.main-nav ul li a.active::after,
.main-nav ul li a:hover::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 100%;
    height: 2px;
    background: #fff;
}

.main-nav ul li a.nav-buy {
    background: transparent;
    color: #fff;
    border: 2px solid #fff;
    padding: 8px 22px;
    border-radius: 50px;
    font-size: 14px;
    font-weight: 600;
    outline: none !important;
    -webkit-tap-highlight-color: transparent;
    cursor: pointer;
    text-decoration: none;
    user-select: none;
    transition: all 0.3s ease;
}

.main-nav ul li a.nav-buy:focus,
.main-nav ul li a.nav-buy:active,
.main-nav ul li a.nav-buy:visited {
    outline: none !important;
    background: transparent;
    box-shadow: none;
}

.main-nav ul li a.nav-buy:hover {
    background: #fff;
    color: #1a1a1a;
}

.header.scrolled .main-nav ul li a.nav-buy {
    background: transparent;
    color: #1f2d3d;
    border-color: #1f2d3d;
}

.header.scrolled .main-nav ul li a.nav-buy:focus,
.header.scrolled .main-nav ul li a.nav-buy:active,
.header.scrolled .main-nav ul li a.nav-buy:visited {
    background: transparent;
    box-shadow: none;
}

.header.scrolled .main-nav ul li a.nav-buy:hover {
    background: #1f2d3d;
    color: #fff;
}

.main-nav ul li a.nav-buy::after {
    display: none;
}

/* Hero */
.hero {
    position: relative;
    min-height: 100vh;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -2;
}

.hero-bg img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.hero-content {
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    z-index: 1;
    padding-left: 60px;
    padding-right: 20px;
    max-width: 100%;
    width: 100%;
    margin: 0;
}

.hero-text {
    max-width: 560px;
    color: #fff;
    text-align: left;
}

.hero-title-wrap {
    display: flex;
    flex-wrap: wrap;
    align-items: flex-end;
    gap: 14px;
    margin-bottom: 16px;
}

.hero-subtitle {
    font-size: 48px;
    font-weight: 800;
    line-height: 1;
}

.hero-badge {
    width: 95px;
    height: 38px;
    border-radius: 50px;
    overflow: hidden;
    box-shadow: 0 4px 12px rgba(0,0,0,0.2);
}

.hero-badge img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.hero-title {
    font-size: 70px;
    font-weight: 900;
    line-height: 1;
    margin: 0;
    width: 100%;
}

.hero-desc {
    font-size: 15px;
    line-height: 1.8;
    margin-bottom: 35px;
    opacity: 0.92;
    max-width: 480px;
    color: rgba(255,255,255,0.9);
}

.btn-primary {
    display: inline-block;
    padding: 13px 34px;
    background: transparent;
    color: #fff;
    border: 2px solid #fff;
    border-radius: 50px;
    font-size: 14px;
    font-weight: 600;
    transition: all 0.3s ease;
}

.btn-primary:hover {
    background: #fff;
    color: #1a1a1a;
}

/* Features */
.features {
    padding: 0 0 90px;
    background: #eef1f5;
    margin-top: -110px;
    position: relative;
    z-index: 2;
}

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

.feature-card {
    background: rgba(35, 50, 68, 0.92);
    border-radius: 16px;
    padding: 30px 28px;
    display: flex;
    gap: 18px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.15);
    transition: transform 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-5px);
}

.feature-icon {
    flex-shrink: 0;
    width: 52px;
    height: 52px;
    background: rgba(255,255,255,0.15);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.feature-icon svg {
    width: 24px;
    height: 24px;
}

.feature-text h3 {
    font-size: 17px;
    margin-bottom: 8px;
    color: #fff;
    font-weight: 700;
}

.feature-text p {
    font-size: 13px;
    color: rgba(255,255,255,0.75);
    line-height: 1.65;
    margin-bottom: 14px;
}

.feature-link {
    font-size: 13px;
    color: #fff;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.feature-link span {
    transition: transform 0.3s;
}

.feature-link:hover span {
    transform: translateX(4px);
}

/* Section Common */
.section-title {
    font-size: 28px;
    font-weight: 800;
    color: #1a1a1a;
    margin-bottom: 12px;
    letter-spacing: -0.5px;
}

.section-header {
    text-align: center;
    margin-bottom: 50px;
}

.section-subtitle {
    font-size: 14px;
    color: #666;
    max-width: 560px;
    margin: 0 auto;
    line-height: 1.7;
}

.title-underline {
    width: 50px;
    height: 4px;
    background: #1a2a3a;
    border-radius: 2px;
    margin: 18px auto 0;
}

/* Flash Sales */
.flash-sales {
    padding: 70px 0 90px;
    background: #eef1f5;
}

.flash-sales .section-title {
    text-align: left;
    margin-bottom: 35px;
}

.flash-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.flash-item {
    text-align: center;
}

.flash-image {
    width: 200px;
    height: 200px;
    margin: 0 auto 22px;
    background: transparent;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    transition: transform 0.3s ease;
}

.flash-image:hover {
    transform: scale(1.05);
}

.flash-image img {
    width: 75%;
    height: 75%;
    object-fit: contain;
}

.flash-item h4 {
    font-size: 16px;
    margin-bottom: 6px;
    color: #1a1a1a;
    font-weight: 700;
}

.flash-item p {
    font-size: 13px;
    color: #777;
}

/* Testimonials */
.testimonials {
    padding: 90px 0 100px;
    background: #fff;
}

.testimonials-slider {
    display: flex;
    align-items: center;
    gap: 20px;
    position: relative;
}

.testimonials-track {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 22px;
    flex: 1;
}

.testimonial-card {
    background: #1f2d3d;
    color: #fff;
    border-radius: 18px;
    padding: 32px 28px 55px;
    text-align: center;
    position: relative;
}

.testimonial-text {
    font-size: 13px;
    line-height: 1.75;
    margin-bottom: 22px;
    color: rgba(255,255,255,0.85);
}

.testimonial-author h4 {
    font-size: 17px;
    margin-bottom: 4px;
    color: #fff;
    font-weight: 700;
}

.testimonial-author span {
    font-size: 13px;
    color: rgba(255,255,255,0.7);
}

.author-avatar {
    position: absolute;
    bottom: -32px;
    left: 50%;
    transform: translateX(-50%);
    width: 64px;
    height: 64px;
    border-radius: 50%;
    overflow: hidden;
    border: 4px solid #fff;
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

.author-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.slider-arrow {
    width: 36px;
    height: 36px;
    background: #1a1a1a;
    color: #fff;
    border-radius: 6px;
    font-size: 22px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: background 0.3s;
}

.slider-arrow:hover {
    background: #333;
}

/* Blog */
.blog {
    padding: 90px 0 100px;
    background: linear-gradient(180deg, #4e6888 0%, #1f2d3d 100%);
    color: #fff;
}

.blog .section-title,
.blog .section-subtitle {
    color: #fff;
}

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

.blog-card {
    transition: transform 0.3s ease;
}

.blog-card:hover {
    transform: translateY(-5px);
}

.blog-image {
    height: 190px;
    border-radius: 16px;
    overflow: hidden;
    margin-bottom: 18px;
    background: #8a95a5;
}

.blog-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.85;
    filter: grayscale(70%) saturate(70%);
}

.blog-content h3 {
    font-size: 17px;
    margin-bottom: 10px;
    color: #fff;
    font-weight: 700;
}

.blog-content p {
    font-size: 13px;
    color: rgba(255,255,255,0.8);
    line-height: 1.65;
    margin-bottom: 12px;
}

.blog-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    font-size: 12px;
    color: rgba(255,255,255,0.7);
}

.blog-meta span {
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.blog-meta svg {
    width: 12px;
    height: 12px;
}

/* FAQ */
.faq {
    padding: 90px 0 100px;
    background: #fff;
}

.faq-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
    max-width: 960px;
    margin: 0 auto;
}

.faq-item {
    border: 1px solid #e0e3e7;
    border-radius: 8px;
    overflow: hidden;
}

.faq-question {
    width: 100%;
    padding: 16px 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 14px;
    font-weight: 500;
    color: #1a1a1a;
    background: #fff;
    text-align: left;
}

.faq-icon {
    font-size: 18px;
    color: #555;
    transition: transform 0.3s;
    font-weight: 400;
}

.faq-item.active .faq-icon {
    transform: rotate(90deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
    background: #fafafa;
}

.faq-answer p {
    padding: 0 20px 16px;
    font-size: 13px;
    color: #666;
    line-height: 1.7;
}

/* Footer */
.footer {
    background: linear-gradient(180deg, #4e6888 0%, #1a2633 100%);
    color: #fff;
    padding: 70px 0 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.6fr 1fr 1.2fr 1.4fr;
    gap: 50px;
    padding-bottom: 55px;
    border-bottom: 1px solid rgba(255,255,255,0.12);
}

.footer-logo {
    font-size: 24px;
    font-weight: 800;
    margin-bottom: 20px;
    letter-spacing: -0.5px;
}

.footer-about p {
    font-size: 13px;
    line-height: 1.8;
    color: rgba(255,255,255,0.8);
    margin-bottom: 22px;
}

.footer-col h4 {
    font-size: 17px;
    font-weight: 700;
    margin-bottom: 22px;
    color: #fff;
}

.footer-col ul li {
    margin-bottom: 11px;
}

.footer-col ul li a {
    font-size: 14px;
    color: rgba(255,255,255,0.85);
    transition: color 0.3s;
}

.footer-col ul li a:hover {
    color: #fff;
}

.social-links {
    display: flex;
    gap: 10px;
}

.social-links a {
    width: 34px;
    height: 34px;
    background: #fff;
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #1a1a1a;
    transition: transform 0.3s;
}

.social-links a:hover {
    transform: translateY(-3px);
}

.footer-contact p {
    font-size: 13px;
    color: rgba(255,255,255,0.8);
    margin-bottom: 8px;
}

.phone {
    font-size: 18px;
    font-weight: 800;
    margin-bottom: 14px;
    color: #fff;
    display: flex;
    align-items: center;
    gap: 10px;
}

.email {
    margin-top: 18px;
    color: rgba(255,255,255,0.85);
    display: flex;
    align-items: center;
    gap: 10px;
    padding-top: 18px;
    border-top: 1px solid rgba(255,255,255,0.15);
}

.footer-bottom {
    padding: 22px 0;
    text-align: center;
}

.footer-bottom p {
    font-size: 13px;
    color: rgba(255,255,255,0.65);
}

/* Back to top */
.back-to-top {
    position: fixed;
    bottom: 25px;
    right: 25px;
    width: 44px;
    height: 44px;
    background: #1f2d3d;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(0,0,0,0.2);
    z-index: 999;
}

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

.back-to-top:hover {
    background: #141e29;
}

/* About Page */
.about-hero {
    background: linear-gradient(135deg, #1f2d3d 0%, #2d3e52 100%);
    padding: 150px 0 80px;
    text-align: center;
}

.about-hero .section-title {
    color: #fff;
    font-size: 42px;
    font-weight: 800;
    margin-bottom: 15px;
}

.about-hero .section-subtitle {
    color: rgba(255,255,255,0.85);
    font-size: 18px;
    max-width: 600px;
    margin: 0 auto;
}

.about-overview {
    padding: 80px 0;
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: start;
}

.about-content h2 {
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 20px;
    color: #1f2d3d;
}

.about-content p {
    font-size: 16px;
    line-height: 1.8;
    color: #444;
    margin-bottom: 15px;
}

.about-stats {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.stat-item {
    background: #fff;
    padding: 30px;
    border-radius: 16px;
    text-align: center;
    box-shadow: 0 4px 20px rgba(0,0,0,0.06);
}

.stat-item h3 {
    font-size: 36px;
    font-weight: 800;
    color: #1f2d3d;
    margin-bottom: 8px;
}

.stat-item p {
    font-size: 14px;
    color: #666;
}

.about-capacity {
    padding: 80px 0;
    background: linear-gradient(135deg, #1f2d3d 0%, #2d3e52 100%);
}

.about-capacity .section-title {
    color: #fff;
    text-align: center;
    margin-bottom: 50px;
}

.capacity-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.capacity-card {
    background: rgba(255,255,255,0.1);
    padding: 35px 25px;
    border-radius: 16px;
    text-align: center;
    backdrop-filter: blur(10px);
}

.capacity-icon {
    margin-bottom: 20px;
}

.capacity-icon svg {
    margin: 0 auto;
}

.capacity-icon svg path,
.capacity-icon svg rect,
.capacity-icon svg circle {
    stroke: #fff;
}

.capacity-card h3 {
    font-size: 20px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 12px;
}

.capacity-card p {
    font-size: 14px;
    color: rgba(255,255,255,0.8);
    line-height: 1.6;
}

.about-certification {
    padding: 80px 0;
}

.about-certification .section-title {
    text-align: center;
    margin-bottom: 50px;
}

.cert-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 40px;
    max-width: 600px;
    margin: 0 auto;
}

.cert-card {
    background: #fff;
    padding: 40px;
    border-radius: 16px;
    text-align: center;
    box-shadow: 0 4px 20px rgba(0,0,0,0.06);
}

.cert-card h3 {
    font-size: 32px;
    font-weight: 800;
    color: #1f2d3d;
    margin-bottom: 10px;
}

.cert-card p {
    font-size: 14px;
    color: #666;
}

.about-mission {
    padding: 80px 0;
    background: #fff;
}

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

.mission-card {
    padding: 35px;
    background: #eef1f5;
    border-radius: 16px;
    text-align: center;
}

.mission-card h3 {
    font-size: 22px;
    font-weight: 700;
    color: #1f2d3d;
    margin-bottom: 15px;
}

.mission-card p {
    font-size: 15px;
    color: #555;
    line-height: 1.7;
}

.about-global {
    padding: 80px 0;
}

.about-global .section-title {
    text-align: center;
    margin-bottom: 15px;
}

.about-global .section-subtitle {
    text-align: center;
    color: #666;
    font-size: 16px;
    margin-bottom: 50px;
}

.global-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    max-width: 600px;
    margin: 0 auto;
}

.global-item {
    text-align: center;
    padding: 30px;
}

.global-item h3 {
    font-size: 48px;
    font-weight: 900;
    color: #1f2d3d;
    margin-bottom: 10px;
}

.global-item p {
    font-size: 16px;
    color: #666;
}

@media (max-width: 992px) {
    .about-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    .capacity-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .about-hero {
        padding: 120px 0 60px;
    }
    .about-hero .section-title {
        font-size: 32px;
    }
    .about-stats {
        grid-template-columns: 1fr 1fr;
    }
    .capacity-grid {
        grid-template-columns: 1fr;
    }
    .cert-grid {
        grid-template-columns: 1fr;
    }
    .mission-grid {
        grid-template-columns: 1fr;
    }
    .global-stats {
        grid-template-columns: 1fr;
    }
}

/* Responsive */
@media (max-width: 1100px) {
    .main-nav ul {
        gap: 22px;
    }
    
    .hero-title {
        font-size: 58px;
    }
    
    .hero-subtitle {
        font-size: 42px;
    }
}

@media (max-width: 992px) {
    .features-container,
    .flash-grid,
    .blog-grid,
    .testimonials-track {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 40px;
    }
    
    .hero-title {
        font-size: 48px;
    }
    
    .hero-subtitle {
        font-size: 36px;
    }
}

@media (max-width: 768px) {
    .main-nav {
        display: none;
    }
    
    .hero-title-wrap {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }
    
    .hero-title {
        font-size: 42px;
    }
    
    .hero-subtitle {
        font-size: 32px;
    }
    
    .features-container,
    .flash-grid,
    .blog-grid,
    .testimonials-track,
    .footer-grid,
    .faq-grid {
        grid-template-columns: 1fr;
    }
    
    .testimonials-slider {
        flex-direction: column;
    }
    
    .slider-arrow {
        display: none;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 34px;
    }
    
    .hero-subtitle {
        font-size: 26px;
    }
    
    .hero-badge {
        width: 90px;
        height: 42px;
    }
}

/* Page Hero */
.page-hero {
    background: linear-gradient(135deg, #1f2d3d 0%, #2d3e52 100%);
    padding: 160px 0 80px;
    text-align: center;
}

.page-hero h1 {
    font-size: 48px;
    font-weight: 800;
    color: #fff;
    margin-bottom: 15px;
}

.page-hero p {
    font-size: 18px;
    color: rgba(255,255,255,0.85);
}

/* About Section */
.about-section {
    padding: 90px 0;
    background: #fff;
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.about-grid.reverse {
    direction: rtl;
}

.about-grid.reverse > * {
    direction: ltr;
}

.about-content h2 {
    font-size: 36px;
    font-weight: 800;
    color: #1a1a1a;
    margin-bottom: 20px;
}

.about-content p {
    font-size: 16px;
    color: #555;
    line-height: 1.7;
    margin-bottom: 15px;
}

.about-image img {
    width: 100%;
    border-radius: 16px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

/* Stats Section */
.stats-section {
    padding: 90px 0;
    background: #f5f7fa;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.stat-card {
    background: #fff;
    padding: 40px 30px;
    border-radius: 16px;
    text-align: center;
    box-shadow: 0 5px 20px rgba(0,0,0,0.05);
}

.stat-card h3 {
    font-size: 42px;
    font-weight: 900;
    color: #1f2d3d;
    margin-bottom: 10px;
}

.stat-card p {
    font-size: 14px;
    color: #666;
}

/* Capacity Section */
.capacity-section {
    padding: 90px 0;
    background: #fff;
}

.capacity-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
    max-width: 800px;
    margin: 0 auto;
}

.capacity-card {
    background: linear-gradient(135deg, #1f2d3d 0%, #2d3e52 100%);
    padding: 50px 40px;
    border-radius: 16px;
    text-align: center;
}

.capacity-card h3 {
    font-size: 52px;
    font-weight: 900;
    color: #fff;
    margin-bottom: 10px;
}

.capacity-card p {
    font-size: 16px;
    color: rgba(255,255,255,0.85);
}

/* Team Section */
.team-section {
    padding: 90px 0;
    background: #f5f7fa;
}

/* Cert Section */
.cert-section {
    padding: 90px 0;
    background: #fff;
}

.cert-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.cert-card {
    text-align: center;
    padding: 40px 20px;
    border-radius: 16px;
    background: #f5f7fa;
}

.cert-icon {
    margin-bottom: 20px;
}

.cert-card h3 {
    font-size: 20px;
    font-weight: 700;
    color: #1a1a1a;
    margin-bottom: 10px;
}

.cert-card p {
    font-size: 14px;
    color: #666;
}

/* MVV Section */
.mvv-section {
    padding: 90px 0;
    background: #f5f7fa;
}

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

.mvv-card {
    background: #fff;
    padding: 40px 30px;
    border-radius: 16px;
    text-align: center;
    box-shadow: 0 5px 20px rgba(0,0,0,0.05);
}

.mvv-card h3 {
    font-size: 24px;
    font-weight: 700;
    color: #1f2d3d;
    margin-bottom: 15px;
}

.mvv-card p {
    font-size: 15px;
    color: #555;
    line-height: 1.6;
}

/* CTA Section */
.cta-section {
    padding: 100px 0;
    background: linear-gradient(135deg, #1f2d3d 0%, #2d3e52 100%);
    text-align: center;
}

.cta-section h2 {
    font-size: 38px;
    font-weight: 800;
    color: #fff;
    margin-bottom: 15px;
}

.cta-section p {
    font-size: 18px;
    color: rgba(255,255,255,0.85);
    margin-bottom: 30px;
}

.btn-primary {
    display: inline-block;
    background: #fff;
    color: #1f2d3d;
    padding: 16px 40px;
    border-radius: 50px;
    font-weight: 700;
    font-size: 16px;
    transition: all 0.3s ease;
}

.btn-primary:hover {
    background: #f0f0f0;
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.2);
}

.btn-secondary {
    display: inline-block;
    background: #1f2d3d;
    color: #fff;
    padding: 12px 30px;
    border-radius: 50px;
    font-weight: 600;
    font-size: 14px;
    transition: all 0.3s ease;
}

.btn-secondary:hover {
    background: #141e29;
    transform: translateY(-2px);
}

/* Product Categories */
.product-categories {
    padding: 90px 0;
    background: #fff;
}

.category-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.category-card {
    text-align: center;
    padding: 30px 20px;
    border-radius: 16px;
    background: #f5f7fa;
    transition: all 0.3s ease;
    text-decoration: none;
    color: inherit;
    display: block;
}

.category-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

.category-image {
    width: 120px;
    height: 120px;
    margin: 0 auto 20px;
    border-radius: 50%;
    overflow: hidden;
}

.category-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.category-card h3 {
    font-size: 20px;
    font-weight: 700;
    color: #1a1a1a;
    margin-bottom: 8px;
}

.category-card p {
    font-size: 14px;
    color: #666;
}

/* Product Detail Section */
.product-detail-section {
    padding: 90px 0;
    background: #f5f7fa;
}

.product-detail-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 40px;
}

.product-detail-card {
    background: #fff;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 5px 20px rgba(0,0,0,0.05);
}

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

.product-detail-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.product-detail-info {
    padding: 30px;
}

.product-detail-info h3 {
    font-size: 24px;
    font-weight: 700;
    color: #1a1a1a;
    margin-bottom: 15px;
}

.product-detail-info p {
    font-size: 15px;
    color: #555;
    line-height: 1.6;
    margin-bottom: 15px;
}

.product-detail-info ul {
    list-style: none;
    margin-bottom: 20px;
}

.product-detail-info ul li {
    font-size: 14px;
    color: #555;
    padding: 5px 0 5px 20px;
    position: relative;
}

.product-detail-info ul li:before {
    content: "";
    position: absolute;
    left: 0;
    top: 12px;
    width: 8px;
    height: 8px;
    background: #1f2d3d;
    border-radius: 50%;
}

/* Customization Section */
.customization-section {
    padding: 90px 0;
    background: #fff;
}

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

.custom-card {
    text-align: center;
    padding: 40px 30px;
    border-radius: 16px;
    background: #f5f7fa;
}

.custom-icon {
    margin-bottom: 20px;
}

.custom-card h3 {
    font-size: 20px;
    font-weight: 700;
    color: #1a1a1a;
    margin-bottom: 10px;
}

.custom-card p {
    font-size: 14px;
    color: #666;
    line-height: 1.6;
}

/* Services Main */
.services-main {
    padding: 90px 0;
    background: #fff;
}

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

.service-card {
    background: #f5f7fa;
    padding: 40px 30px;
    border-radius: 16px;
    transition: all 0.3s ease;
}

.service-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

.service-icon {
    margin-bottom: 20px;
}

.service-card h3 {
    font-size: 22px;
    font-weight: 700;
    color: #1a1a1a;
    margin-bottom: 15px;
}

.service-details h4 {
    font-size: 16px;
    font-weight: 600;
    color: #1f2d3d;
    margin-top: 15px;
    margin-bottom: 8px;
}

.service-details p {
    font-size: 14px;
    color: #555;
    line-height: 1.6;
}

.service-details ul {
    list-style: none;
    margin-top: 10px;
}

.service-details ul li {
    font-size: 14px;
    color: #555;
    padding: 4px 0 4px 20px;
    position: relative;
}

.service-details ul li:before {
    content: "";
    position: absolute;
    left: 0;
    top: 11px;
    width: 8px;
    height: 8px;
    background: #1f2d3d;
    border-radius: 50%;
}

/* Process Section */
.process-section {
    padding: 90px 0;
    background: #f5f7fa;
}

.process-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 20px;
}

.process-step {
    text-align: center;
    padding: 30px 15px;
    background: #fff;
    border-radius: 16px;
}

.step-number {
    width: 50px;
    height: 50px;
    background: #1f2d3d;
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    font-weight: 700;
    margin: 0 auto 15px;
}

.process-step h3 {
    font-size: 18px;
    font-weight: 700;
    color: #1a1a1a;
    margin-bottom: 10px;
}

.process-step p {
    font-size: 13px;
    color: #666;
}

/* Trade Section */
.trade-section {
    padding: 90px 0;
    background: #fff;
}

.trade-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    max-width: 800px;
    margin: 0 auto;
}

.trade-card {
    text-align: center;
    padding: 40px 30px;
    background: linear-gradient(135deg, #1f2d3d 0%, #2d3e52 100%);
    border-radius: 16px;
}

.trade-card h3 {
    font-size: 32px;
    font-weight: 900;
    color: #fff;
    margin-bottom: 8px;
}

.trade-card p {
    font-size: 14px;
    color: rgba(255,255,255,0.85);
}

/* Contact Section */
.contact-section {
    padding: 90px 0;
    background: #fff;
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
}

.contact-info h2 {
    font-size: 32px;
    font-weight: 800;
    color: #1a1a1a;
    margin-bottom: 15px;
}

.contact-info > p {
    font-size: 15px;
    color: #555;
    line-height: 1.6;
    margin-bottom: 30px;
}

.contact-item {
    display: flex;
    gap: 15px;
    margin-bottom: 25px;
}

.contact-icon {
    width: 48px;
    height: 48px;
    background: #f5f7fa;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.contact-item h4 {
    font-size: 16px;
    font-weight: 600;
    color: #1a1a1a;
    margin-bottom: 5px;
}

.contact-item p {
    font-size: 14px;
    color: #555;
}

.contact-form-container h2 {
    font-size: 32px;
    font-weight: 800;
    color: #1a1a1a;
    margin-bottom: 30px;
}

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

.form-group label {
    display: block;
    font-size: 14px;
    font-weight: 600;
    color: #1a1a1a;
    margin-bottom: 8px;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 14px 16px;
    border: 1px solid #e0e3e7;
    border-radius: 10px;
    font-size: 14px;
    font-family: inherit;
    transition: border-color 0.3s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #1f2d3d;
}

.contact-form {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

.contact-form .full-width {
    grid-column: span 2;
}

/* Map Section */
.map-section {
    padding: 90px 0;
    background: #f5f7fa;
}

.map-container {
    border-radius: 16px;
    overflow: hidden;
    background: #e0e3e7;
}

.map-placeholder {
    padding: 80px 40px;
    text-align: center;
}

.map-placeholder p {
    font-size: 16px;
    color: #555;
    margin-top: 15px;
}

/* Quote Section */
.quote-section {
    padding: 90px 0;
    background: #fff;
}

.quote-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
}

.quote-info h2 {
    font-size: 32px;
    font-weight: 800;
    color: #1a1a1a;
    margin-bottom: 30px;
}

.quote-benefits {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.benefit-item {
    display: flex;
    gap: 15px;
    align-items: flex-start;
}

.benefit-icon {
    width: 48px;
    height: 48px;
    background: #f5f7fa;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.benefit-item h4 {
    font-size: 16px;
    font-weight: 600;
    color: #1a1a1a;
    margin-bottom: 5px;
}

.benefit-item p {
    font-size: 14px;
    color: #555;
}

.quote-form-container h2 {
    font-size: 32px;
    font-weight: 800;
    color: #1a1a1a;
    margin-bottom: 30px;
}

.quote-form {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

.quote-form .full-width {
    grid-column: span 2;
}

.quote-process {
    padding: 90px 0;
    background: #f5f7fa;
}

/* Responsive for new pages */
@media (max-width: 992px) {
    .about-grid,
    .stats-grid,
    .cert-grid,
    .mvv-grid,
    .category-grid,
    .product-detail-grid,
    .custom-grid,
    .services-grid,
    .process-grid,
    .trade-grid,
    .contact-grid,
    .quote-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .process-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .contact-form,
    .quote-form {
        grid-template-columns: 1fr;
    }
    
    .contact-form .full-width,
    .quote-form .full-width {
        grid-column: span 1;
    }
}

@media (max-width: 768px) {
    .page-hero h1 {
        font-size: 36px;
    }
    
    .about-grid,
    .stats-grid,
    .cert-grid,
    .mvv-grid,
    .category-grid,
    .product-detail-grid,
    .custom-grid,
    .services-grid,
    .process-grid,
    .trade-grid,
    .contact-grid,
    .quote-grid {
        grid-template-columns: 1fr;
    }
    
    .about-grid.reverse {
        direction: ltr;
    }
    
    .cta-section h2 {
        font-size: 28px;
    }
}

/* ========== 移动端汉堡菜单 ========== */
.mobile-menu-btn {
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    width: 44px;
    height: 44px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    z-index: 1003;
}

.mobile-menu-btn span {
    display: block;
    width: 24px;
    height: 2px;
    background: #fff;
    margin: 4px 0;
    transition: all 0.3s ease;
    border-radius: 2px;
}

.header.scrolled .mobile-menu-btn span {
    background: #1a1a1a;
}

.mobile-menu-btn.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.mobile-menu-btn.active span:nth-child(2) {
    opacity: 0;
}

.mobile-menu-btn.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* 移动端导航抽屉 */
.mobile-nav-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.5);
    z-index: 1001;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.mobile-nav-overlay.active {
    opacity: 1;
    visibility: visible;
}

.mobile-nav {
    position: fixed;
    top: 0;
    right: -300px;
    width: 280px;
    height: 100%;
    background: #fff;
    z-index: 1002;
    transition: right 0.3s ease;
    box-shadow: -5px 0 30px rgba(0,0,0,0.15);
    overflow-y: auto;
}

.mobile-nav.active {
    right: 0;
}

.mobile-nav-header {
    padding: 20px;
    background: linear-gradient(135deg, #1f2d3d 0%, #2d3e52 100%);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.mobile-nav-header .logo {
    font-size: 20px;
    font-weight: 800;
    color: #fff;
    display: flex;
    align-items: center;
    gap: 10px;
}

.mobile-nav-header .logo-img {
    width: 32px;
    height: 32px;
}

.mobile-nav-close {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255,255,255,0.15);
    border-radius: 8px;
    color: #fff;
    font-size: 20px;
}

.mobile-nav-menu {
    padding: 20px 0;
}

.mobile-nav-menu ul {
    list-style: none;
}

.mobile-nav-menu ul li {
    border-bottom: 1px solid #f0f0f0;
}

.mobile-nav-menu ul li a {
    display: block;
    padding: 16px 24px;
    font-size: 15px;
    font-weight: 500;
    color: #1a1a1a;
    transition: all 0.3s ease;
}

.mobile-nav-menu ul li a:hover,
.mobile-nav-menu ul li a.active {
    background: #f5f7fa;
    color: #1f2d3d;
    font-weight: 600;
}

.mobile-nav-menu ul li a.mobile-nav-buy {
    display: block;
    margin: 20px 24px;
    padding: 14px;
    background: #1f2d3d;
    color: #fff;
    text-align: center;
    border-radius: 10px;
    font-weight: 600;
}

.mobile-nav-contact {
    padding: 24px;
    background: #f5f7fa;
    margin: 0 20px;
    border-radius: 12px;
    margin-bottom: 20px;
}

.mobile-nav-contact h4 {
    font-size: 14px;
    font-weight: 600;
    color: #1a1a1a;
    margin-bottom: 12px;
}

.mobile-nav-contact p {
    font-size: 13px;
    color: #555;
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.mobile-nav-contact svg {
    width: 14px;
    height: 14px;
    flex-shrink: 0;
}

/* ========== 移动端响应式优化 (768px以下) ========== */
@media (max-width: 768px) {
    /* Header 移动端 */
    .header {
        padding: 15px 0;
    }
    
    .header-container {
        padding: 0 16px;
    }
    
    .main-nav {
        display: none !important;
    }
    
    .mobile-menu-btn {
        display: flex;
    }
    
    .logo {
        font-size: 20px;
    }
    
    .logo-img {
        width: 32px;
        height: 32px;
    }
    
    /* Hero 移动端 */
    .hero {
        min-height: 85vh;
    }
    
    .hero-content {
        padding: 0 20px;
        top: 55%;
    }
    
    .hero-text {
        max-width: 100%;
    }
    
    .hero-title {
        font-size: 36px;
    }
    
    .hero-subtitle {
        font-size: 28px;
    }
    
    .hero-desc {
        font-size: 14px;
        margin-bottom: 24px;
        line-height: 1.7;
    }
    
    .btn-primary {
        padding: 14px 28px;
        font-size: 15px;
    }
    
    /* Features 移动端 */
    .features {
        padding: 40px 0 60px;
        margin-top: -60px;
    }
    
    .features-container {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    
    .feature-card {
        padding: 20px;
    }
    
    .feature-icon {
        width: 44px;
        height: 44px;
    }
    
    .feature-text h3 {
        font-size: 15px;
    }
    
    .feature-text p {
        font-size: 12px;
    }
    
    /* Product Categories 移动端 */
    .product-categories {
        padding: 60px 0;
    }
    
    .section-title {
        font-size: 24px;
    }
    
    .section-subtitle {
        font-size: 13px;
    }
    
    .category-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
    }
    
    .category-card {
        padding: 20px 15px;
    }
    
    .category-image {
        width: 80px;
        height: 80px;
    }
    
    .category-card h3 {
        font-size: 16px;
    }
    
    .category-card p {
        font-size: 12px;
    }
    
    /* Testimonials 移动端 */
    .testimonials {
        padding: 60px 0 80px;
    }
    
    .testimonials-track {
        grid-template-columns: 1fr;
        gap: 60px;
    }
    
    .testimonial-card {
        padding: 24px 20px 50px;
    }
    
    .testimonial-text {
        font-size: 13px;
    }
    
    .author-avatar {
        width: 56px;
        height: 56px;
        bottom: -28px;
    }
    
    /* Services 移动端 */
    .blog {
        padding: 60px 0 80px;
    }
    
    .blog-grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }
    
    .blog-image {
        height: 160px;
    }
    
    /* FAQ 移动端 */
    .faq {
        padding: 60px 0 80px;
    }
    
    .faq-grid {
        grid-template-columns: 1fr;
        gap: 12px;
    }
    
    .faq-question {
        padding: 14px 16px;
        font-size: 13px;
    }
    
    .faq-answer p {
        font-size: 13px;
        padding: 0 16px 14px;
    }
    
    /* Footer 移动端 */
    .footer {
        padding: 50px 0 0;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .footer-col {
        padding-bottom: 20px;
        border-bottom: 1px solid rgba(255,255,255,0.1);
    }
    
    .footer-col:last-child {
        border-bottom: none;
    }
    
    .footer-contact p {
        font-size: 13px;
    }
    
    .phone {
        font-size: 16px;
    }
    
    /* Back to top 移动端 */
    .back-to-top {
        width: 40px;
        height: 40px;
        bottom: 20px;
        right: 20px;
    }
    
    .back-to-top svg {
        width: 14px;
        height: 14px;
    }
    
    /* Page Hero 移动端 */
    .page-hero {
        padding: 120px 0 60px;
    }
    
    .page-hero h1 {
        font-size: 32px;
    }
    
    .page-hero p {
        font-size: 15px;
        padding: 0 20px;
    }
    
    /* About页面移动端 */
    .about-hero {
        padding: 120px 0 60px;
    }
    
    .about-hero .section-title {
        font-size: 32px;
    }
    
    .about-hero .section-subtitle {
        font-size: 15px;
        padding: 0 20px;
    }
    
    .about-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .about-content h2 {
        font-size: 26px;
    }
    
    .about-content p {
        font-size: 15px;
    }
    
    .about-stats {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }
    
    .stat-item {
        padding: 20px 15px;
    }
    
    .stat-item h3 {
        font-size: 28px;
    }
    
    .stat-item p {
        font-size: 12px;
    }
    
    .about-capacity {
        padding: 60px 0;
    }
    
    .capacity-card {
        padding: 25px 20px;
    }
    
    .capacity-card h3 {
        font-size: 18px;
    }
    
    .capacity-card p {
        font-size: 13px;
    }
    
    .cert-card {
        padding: 30px 20px;
    }
    
    .cert-card h3 {
        font-size: 28px;
    }
    
    .mission-card {
        padding: 25px 20px;
    }
    
    .mission-card h3 {
        font-size: 18px;
    }
    
    .mission-card p {
        font-size: 14px;
    }
    
    .global-item h3 {
        font-size: 36px;
    }
    
    /* Products页面移动端 */
    .product-detail-grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }
    
    .product-detail-image {
        height: 200px;
    }
    
    .product-detail-info {
        padding: 20px;
    }
    
    .product-detail-info h3 {
        font-size: 20px;
    }
    
    .product-detail-info p {
        font-size: 14px;
    }
    
    .product-detail-info ul li {
        font-size: 13px;
    }
    
    .custom-card {
        padding: 30px 20px;
    }
    
    .custom-card h3 {
        font-size: 18px;
    }
    
    .custom-card p {
        font-size: 13px;
    }
    
    /* Services页面移动端 */
    .services-main {
        padding: 60px 0;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .service-card {
        padding: 30px 20px;
    }
    
    .service-card h3 {
        font-size: 18px;
    }
    
    .service-details p {
        font-size: 13px;
    }
    
    .service-details ul li {
        font-size: 13px;
    }
    
    .process-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }
    
    .process-step {
        padding: 20px 12px;
    }
    
    .step-number {
        width: 40px;
        height: 40px;
        font-size: 16px;
        margin-bottom: 10px;
    }
    
    .process-step h3 {
        font-size: 14px;
    }
    
    .process-step p {
        font-size: 12px;
    }
    
    .trade-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    
    .trade-card {
        padding: 30px 20px;
    }
    
    .trade-card h3 {
        font-size: 28px;
    }
    
    /* CTA Section 移动端 */
    .cta-section {
        padding: 60px 0;
    }
    
    .cta-section h2 {
        font-size: 24px;
        padding: 0 20px;
    }
    
    .cta-section p {
        font-size: 15px;
        padding: 0 20px;
    }
    
    .btn-primary {
        padding: 14px 28px;
        font-size: 15px;
    }
    
    /* Contact页面移动端 */
    .contact-section {
        padding: 60px 0;
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .contact-info h2 {
        font-size: 26px;
    }
    
    .contact-form-container h2 {
        font-size: 26px;
    }
    
    .contact-form {
        grid-template-columns: 1fr;
    }
    
    .contact-form .full-width {
        grid-column: span 1;
    }
    
    .form-group {
        margin-bottom: 16px;
    }
    
    .form-group input,
    .form-group select,
    .form-group textarea {
        padding: 12px 14px;
        font-size: 16px; /* 防止iOS缩放 */
    }
    
    /* Quote页面移动端 */
    .quote-section {
        padding: 60px 0;
    }
    
    .quote-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .quote-info h2 {
        font-size: 26px;
    }
    
    .quote-form-container h2 {
        font-size: 26px;
    }
    
    .quote-form {
        grid-template-columns: 1fr;
    }
    
    .quote-form .full-width {
        grid-column: span 1;
    }
    
    .benefit-item {
        gap: 12px;
    }
    
    .benefit-icon {
        width: 40px;
        height: 40px;
    }
    
    .benefit-item h4 {
        font-size: 15px;
    }
    
    .benefit-item p {
        font-size: 13px;
    }
    
    .quote-process {
        padding: 60px 0;
    }
    
    /* Map Section 移动端 */
    .map-section {
        padding: 60px 0;
    }
    
    .map-placeholder {
        padding: 60px 20px;
    }
    
    .map-placeholder p {
        font-size: 14px;
    }
    
    /* Stats Section 移动端 */
    .stats-section {
        padding: 60px 0;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
    }
    
    .stat-card {
        padding: 25px 15px;
    }
    
    .stat-card h3 {
        font-size: 32px;
    }
    
    .stat-card p {
        font-size: 12px;
    }
    
    /* Capacity Section 移动端 */
    .capacity-section {
        padding: 60px 0;
    }
    
    .capacity-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    
    .capacity-card {
        padding: 35px 25px;
    }
    
    .capacity-card h3 {
        font-size: 42px;
    }
    
    .capacity-card p {
        font-size: 14px;
    }
    
    /* Team Section 移动端 */
    .team-section {
        padding: 60px 0;
    }
    
    /* Cert Section 移动端 */
    .cert-section {
        padding: 60px 0;
    }
    
    .cert-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
    }
    
    .cert-card {
        padding: 25px 15px;
    }
    
    .cert-card h3 {
        font-size: 18px;
    }
    
    .cert-card p {
        font-size: 12px;
    }
    
    /* MVV Section 移动端 */
    .mvv-section {
        padding: 60px 0;
    }
    
    .mvv-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    
    .mvv-card {
        padding: 30px 20px;
    }
    
    .mvv-card h3 {
        font-size: 20px;
    }
    
    .mvv-card p {
        font-size: 14px;
    }
    
    /* Customization Section 移动端 */
    .customization-section {
        padding: 60px 0;
    }
    
    .custom-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }
}

/* ========== 超小屏幕 (480px以下) ========== */
@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }
    
    .hero {
        min-height: 80vh;
    }
    
    .hero-title {
        font-size: 28px;
    }
    
    .hero-subtitle {
        font-size: 22px;
    }
    
    .hero-desc {
        font-size: 13px;
    }
    
    .section-title {
        font-size: 22px;
    }
    
    .category-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }
    
    .category-image {
        width: 60px;
        height: 60px;
    }
    
    .category-card {
        padding: 16px 10px;
    }
    
    .category-card h3 {
        font-size: 14px;
    }
    
    .process-grid {
        grid-template-columns: 1fr 1fr;
        gap: 10px;
    }
    
    .stats-grid {
        grid-template-columns: 1fr 1fr;
        gap: 12px;
    }
    
    .stat-card h3 {
        font-size: 28px;
    }
}