@import url('https://fonts.googleapis.com/css2?family=Be+Vietnam+Pro:wght@300;400;500;600;700;800&display=swap');
:root {
    --font-primary: 'Be Vietnam Pro', sans-serif;
    --color-primary: #004080;
    --color-primary-dark: #00274d;
    --color-secondary: #01796F;
    --color-accent: #FD7E14;
    --color-accent-light: #FFE8D6;
    --color-text-dark: #212529;
    --color-text-light: #495057;
    --color-text-white: #ffffff;
    --color-bg-light: #ffffff;
    --color-bg-medium: #f8f9fa;
    --color-bg-dark: #e9ecef;
    --color-border: #dee2e6;
    --shadow-sm: 0 4px 6px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 8px 16px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 15px 30px rgba(0, 0, 0, 0.12);
    --border-radius-sm: 8px;
    --border-radius-md: 12px;
    --border-radius-lg: 20px;
    --transition-fast: 0.2s ease-in-out;
    --transition-medium: 0.4s ease-in-out;
    --transition-slow: 0.6s ease-in-out;
    --container-width: 1280px;
}
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}
html {
    scroll-behavior: smooth;
    font-size: 16px;
}
body {
    font-family: var(--font-primary);
    background-color: var(--color-bg-light);
    color: var(--color-text-light);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
    overflow-x: hidden;
}
img, picture, video, canvas, svg {
    display: block;
    max-width: 100%;
}
a {
    text-decoration: none;
    color: var(--color-primary);
    transition: color var(--transition-fast);
}
a:hover {
    color: var(--color-primary-dark);
}
h1, h2, h3, h4, h5, h6 {
    color: var(--color-text-dark);
    font-weight: 700;
    line-height: 1.3;
    letter-spacing: -0.5px;
}
h1 { font-size: 3.5rem; }
h2 { font-size: 2.5rem; }
h3 { font-size: 1.75rem; }
h4 { font-size: 1.25rem; }
p { margin-bottom: 1rem; }
.container {
    width: 90%;
    max-width: var(--container-width);
    margin-left: auto;
    margin-right: auto;
}
.site-header {
    width: 100%;
    padding: 1.25rem 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    background-color: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-border);
    transition: all var(--transition-medium);
}
.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 90%;
    max-width: 1400px;
    margin: 0 auto;
}
.logo-link .logo {
    height: 50px;
    width: auto;
    transition: transform var(--transition-medium);
}
.logo-link:hover .logo {
    transform: scale(1.05);
}
.main-navigation ul {
    list-style: none;
    display: flex;
    align-items: center;
    gap: 2.5rem;
}
.main-navigation > ul > li {
    position: relative;
}
.main-navigation a {
    color: var(--color-text-dark);
    font-weight: 500;
    font-size: 1.05rem;
    padding: 0.5rem 0;
    position: relative;
    display: block;
    transition: color var(--transition-fast);
}
.main-navigation > ul > li > a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--color-accent), var(--color-primary));
    transition: width var(--transition-medium);
}
.main-navigation > ul > li:hover > a {
    color: var(--color-primary);
}
.main-navigation > ul > li:hover > a::after {
    width: 100%;
}
.sub-menu {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 120%;
    left: 50%;
    transform: translateX(-50%);
    background-color: var(--color-bg-light);
    border-radius: var(--border-radius-md);
    box-shadow: var(--shadow-lg);
    padding: 0.75rem 0;
    min-width: 280px;
    z-index: 100;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-medium), top var(--transition-medium);
    border: 1px solid var(--color-border);
    gap: 0 !important;
}
.main-navigation > ul > li:hover .sub-menu {
    opacity: 1;
    visibility: visible;
    top: 100%;
}
.sub-menu li {
    width: 100%;
}
.sub-menu a {
    padding: 0.8rem 1.75rem;
    white-space: nowrap;
    font-size: 1rem;
    transition: background-color var(--transition-fast), color var(--transition-fast), padding-left var(--transition-fast);
}
.sub-menu a:hover {
    background-color: var(--color-bg-medium);
    color: var(--color-primary);
    padding-left: 2rem;
}
.hero-section {
    padding: 6rem 0;
    text-align: center;
    background: radial-gradient(circle, rgba(248, 249, 250, 0.8), transparent 70%);
}
.hero-content {
    max-width: 800px;
    margin: 0 auto;
    animation: fadeInUp 1s ease-out;
}
.hero-title {
    background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-fill-color: transparent;
    margin-bottom: 1.5rem;
    font-size: 4rem;
    font-weight: 800;
}
.project-status {
    font-size: 1.1rem;
    color: var(--color-text-light);
    max-width: 700px;
    margin: 0 auto 1rem;
}
.brand-affiliation {
    font-weight: 500;
    margin-bottom: 2.5rem;
}
.form-wrapper-hero {
    background-color: var(--color-bg-light);
    padding: 2.5rem;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--color-border);
    text-align: left;
    margin-top: 2rem;
    animation: fadeInUp 1.2s ease-out;
}
.form-title {
    text-align: center;
    margin-bottom: 1.5rem;
    color: var(--color-primary);
}
.form-wrapper-hero form {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}
.form-wrapper-hero input, .form-wrapper-hero textarea {
    width: 100%;
    padding: 1rem;
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-sm);
    font-family: var(--font-primary);
    font-size: 1rem;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}
.form-wrapper-hero input:focus, .form-wrapper-hero textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 4px rgba(0, 64, 128, 0.1);
}
.form-wrapper-hero textarea {
    resize: vertical;
    min-height: 120px;
}
.contact-link {
    background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
    color: var(--color-text-white);
    border: none;
    padding: 1rem 1.5rem;
    border-radius: var(--border-radius-sm);
    font-size: 1.1rem;
    font-weight: 700;
    cursor: pointer;
    transition: all var(--transition-medium);
    background-size: 200% 100%;
}
.contact-link:hover {
    background-position: 100% 0;
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}
.content-section {
    padding: 6rem 0;
}
.content-section:nth-of-type(odd) {
    background-color: var(--color-bg-medium);
}
.section-title-center {
    text-align: center;
    margin-bottom: 1rem;
    font-weight: 800;
}
.section-subtitle {
    text-align: center;
    font-size: 1.25rem;
    color: var(--color-text-light);
    max-width: 800px;
    margin: 0 auto 4rem;
}
.section-vision .vision-grid {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 4rem;
    align-items: center;
}
.vision-text-content h3 {
    margin-bottom: 1.5rem;
    color: var(--color-primary);
}
.vision-image-gallery {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1rem;
}
.vision-image-gallery img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: var(--border-radius-md);
    box-shadow: var(--shadow-lg);
    transition: transform var(--transition-medium), box-shadow var(--transition-medium);
}
.vision-image-gallery img:hover {
    transform: scale(1.03) rotate(-1deg);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}
.section-solutions-detailed .solution-card {
    display: flex;
    align-items: center;
    gap: 4rem;
    margin-bottom: 5rem;
}
.section-solutions-detailed .solution-card.reverse {
    flex-direction: row-reverse;
}
.solution-card-img {
    flex: 0 0 40%;
    max-width: 40%;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    object-fit: cover;
    aspect-ratio: 4/3;
    transition: all var(--transition-slow);
}
.solution-card:hover .solution-card-img {
    transform: scale(1.05);
    box-shadow: var(--shadow-lg);
}
.solution-card-content {
    flex: 1;
}
.solution-card-content h3 {
    margin-bottom: 1rem;
    font-size: 2rem;
    color: var(--color-primary-dark);
}
.image-gallery-grid-solutions {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}
.image-gallery-grid-solutions img {
    width: 100%;
    height: 250px;
    object-fit: cover;
    border-radius: var(--border-radius-md);
    transition: transform var(--transition-medium), filter var(--transition-medium);
    filter: saturate(0.8);
}
.image-gallery-grid-solutions img:hover {
    transform: translateY(-10px);
    filter: saturate(1.2);
}
.section-applications .case-study-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2.5rem;
}
.case-study-item {
    background-color: var(--color-bg-light);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: transform var(--transition-medium), box-shadow var(--transition-medium);
    padding: 2rem;
    border: 1px solid var(--color-border);
}
.case-study-item:hover {
    transform: translateY(-15px);
    box-shadow: var(--shadow-lg);
}
.case-study-item img {
    width: 80px;
    height: 80px;
    margin-bottom: 1.5rem;
    object-fit: contain;
}
.case-study-item h4 {
    margin-bottom: 1rem;
    color: var(--color-secondary);
    font-size: 1.35rem;
}
.case-study-item p {
    font-size: 0.95rem;
}
.image-gallery-grid-case-studies {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    grid-template-rows: repeat(2, 200px);
    gap: 1.5rem;
    margin-top: 4rem;
}
.image-gallery-grid-case-studies img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: var(--border-radius-md);
    opacity: 0.9;
    transition: all var(--transition-medium);
}
.image-gallery-grid-case-studies img:hover {
    opacity: 1;
    transform: scale(1.05);
    z-index: 10;
    box-shadow: var(--shadow-lg);
}
.image-gallery-grid-case-studies img:nth-child(1) { grid-column: 1 / 3; }
.image-gallery-grid-case-studies img:nth-child(2) { grid-column: 3 / 5; }
.image-gallery-grid-case-studies img:nth-child(3) { grid-column: 5 / 7; }
.image-gallery-grid-case-studies img:nth-child(4) { grid-column: 1 / 2; }
.image-gallery-grid-case-studies img:nth-child(5) { grid-column: 2 / 4; }
.image-gallery-grid-case-studies img:nth-child(6) { grid-column: 4 / 6; }
.image-gallery-grid-case-studies img:nth-child(7) { grid-column: 6 / 7; }
.section-partners {
    background-color: var(--color-bg-dark);
}
.partner-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 3rem;
}
.partner-category {
    background-color: var(--color-bg-light);
    padding: 2.5rem;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid transparent;
    transition: all var(--transition-medium);
}
.partner-category:hover {
    transform: translateY(-10px);
    border-color: var(--color-primary);
    box-shadow: var(--shadow-md);
}
.partner-category h4 {
    border-bottom: 2px solid var(--color-primary);
    padding-bottom: 0.75rem;
    margin-bottom: 1.5rem;
    color: var(--color-primary-dark);
}
.partner-category p {
    font-size: 1rem;
    line-height: 1.8;
}
.dofollow-partner-link {
    font-weight: 600;
    position: relative;
    color: var(--color-secondary);
}
.dofollow-partner-link::after {
    content: '';
    position: absolute;
    width: 100%;
    height: 1px;
    bottom: -2px;
    left: 0;
    background-color: var(--color-accent);
    transform: scaleX(0);
    transform-origin: bottom right;
    transition: transform 0.3s ease-out;
}
.dofollow-partner-link:hover::after {
    transform: scaleX(1);
    transform-origin: bottom left;
}
.section-why-us .why-us-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2.5rem;
    margin-bottom: 4rem;
}
.why-us-item {
    text-align: center;
}
.why-us-item img {
    width: 100%;
    height: 220px;
    object-fit: cover;
    border-radius: 50%;
    margin-bottom: 2rem;
    border: 5px solid var(--color-bg-light);
    box-shadow: var(--shadow-lg);
    transition: all var(--transition-medium);
}
.why-us-item:hover img {
    transform: scale(1.05) rotate(2deg);
    border-color: var(--color-accent-light);
}
.why-us-item h4 {
    margin-bottom: 0.75rem;
    font-size: 1.4rem;
}
.image-gallery-grid-final {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
}
.image-gallery-grid-final img {
    width: 100%;
    height: 250px;
    object-fit: cover;
    border-radius: var(--border-radius-md);
    transition: all var(--transition-medium);
}
.image-gallery-grid-final img:hover {
    transform: scale(1.1);
    z-index: 10;
    box-shadow: var(--shadow-lg);
}
.site-footer {
    background-color: var(--color-text-dark);
    color: var(--color-bg-dark);
    padding: 4rem 0 2rem;
}
.footer-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 3rem;
    max-width: var(--container-width);
    margin: 0 auto;
    width: 90%;
}
.footer-logo-area {
    flex: 0 0 30%;
}
.footer-logo {
    max-width: 200px;
    margin-bottom: 1rem;
    filter: brightness(0) invert(1);
}
.footer-logo-area p {
    font-size: 1rem;
    color: var(--color-bg-dark);
}
.credits-section {
    flex: 1;
    text-align: right;
    font-size: 0.9rem;
}
.credits-text {
    margin-bottom: 1rem;
    color: #adb5bd;
}
.copyright {
    color: #6c757d;
}
.credits-section a {
    color: var(--color-bg-light);
    font-weight: 500;
}
.credits-section a:hover {
    color: var(--color-accent);
}
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}
@media (max-width: 1200px) {
    .section-vision .vision-grid {
        grid-template-columns: 1fr;
    }
    .section-solutions-detailed .solution-card,
    .section-solutions-detailed .solution-card.reverse {
        flex-direction: column;
        text-align: center;
    }
    .solution-card-img {
        flex-basis: auto;
        max-width: 80%;
        margin: 0 auto;
    }
}
@media (max-width: 992px) {
    h1, .hero-title { font-size: 2.8rem; }
    h2, .section-title-center { font-size: 2rem; }
    .header-container {
        flex-direction: column;
        gap: 1rem;
    }
    .main-navigation ul {
        gap: 1.5rem;
        flex-wrap: wrap;
        justify-content: center;
    }
    .sub-menu {
        min-width: 220px;
    }
    .section-applications .case-study-grid,
    .section-why-us .why-us-grid {
        grid-template-columns: 1fr;
    }
    .image-gallery-grid-case-studies {
        grid-template-columns: repeat(2, 1fr);
        grid-template-rows: auto;
    }
    .image-gallery-grid-case-studies img:nth-child(n) {
        grid-column: auto;
    }
    .footer-container {
        flex-direction: column;
        text-align: center;
    }
    .credits-section {
        text-align: center;
    }
}
@media (max-width: 768px) {
    html {
        font-size: 15px;
    }
    h1, .hero-title { font-size: 2.2rem; }
    .content-section {
        padding: 4rem 0;
    }
    .hero-section {
        padding: 4rem 0;
    }
    .form-wrapper-hero {
        padding: 1.5rem;
    }
    .main-navigation > ul {
        display: none;
    }
    .partner-grid {
        grid-template-columns: 1fr;
    }
    .image-gallery-grid-final {
        grid-template-columns: repeat(2, 1fr);
    }
}