/* Base */
:root {
    --color-primary: #2563eb;
    --color-primary-dark: #1d4ed8;
    --color-dark: #0f172a;
    --color-dark-alt: #1e293b;
    --color-text: #334155;
    --color-text-light: #64748b;
    --color-bg: #ffffff;
    --color-bg-light: #f8fafc;
    --color-bg-dark: #0f172a;
    --color-accent: #0ea5e9;
    --color-border: #e2e8f0;
    --font-main: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --transition: 0.25s ease;
}

*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

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

body {
    font-family: var(--font-main);
    color: var(--color-text);
    line-height: 1.6;
    background: var(--color-bg);
    -webkit-font-smoothing: antialiased;
}

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

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

ul {
    list-style: none;
}

/* Container */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Navbar */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255,255,255,0.92);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-border);
    transition: box-shadow var(--transition);
}

.navbar.scrolled {
    box-shadow: var(--shadow-sm);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 90px;
}

.logo {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-dark);
    letter-spacing: -0.02em;
}

.logo-accent {
    color: var(--color-primary);
}

.logo-img-link {
    display: flex;
    align-items: center;
}

.logo-img {
    height: 70px;
    width: auto;
    max-width: 260px;
    object-fit: contain;
}

.logo-img-white {
    filter: brightness(0) invert(1);
}

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

.nav-link {
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--color-text);
    position: relative;
    padding: 4px 0;
}

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

.nav-link:hover {
    color: var(--color-primary);
}

.nav-link:hover::after {
    width: 100%;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-dark);
    border-radius: 2px;
    transition: transform var(--transition), opacity var(--transition);
}

/* Hero */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    padding: 120px 0 80px;
}

.hero-bg {
    position: absolute;
    inset: 0;
    z-index: 0;
}

.hero-bg-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: brightness(0.5);
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(15,23,42,0.6) 0%, rgba(15,23,42,0.85) 100%);
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    color: #fff;
    max-width: 800px;
    animation: fadeInUp 0.8s ease forwards;
}

.hero-subtitle {
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-accent);
    margin-bottom: 16px;
}

.hero-title {
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 700;
    line-height: 1.1;
    letter-spacing: -0.03em;
    margin-bottom: 24px;
}

.hero-description {
    font-size: clamp(1rem, 2vw, 1.25rem);
    line-height: 1.7;
    color: rgba(255,255,255,0.85);
    margin-bottom: 40px;
    max-width: 640px;
    margin-left: auto;
    margin-right: auto;
}

.hero-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 32px;
    font-size: 0.9375rem;
    font-weight: 600;
    border-radius: var(--radius-sm);
    transition: all var(--transition);
    cursor: pointer;
    border: 2px solid transparent;
    white-space: nowrap;
}

.btn-primary {
    background: var(--color-primary);
    color: #fff;
    border-color: var(--color-primary);
}

.btn-primary:hover {
    background: var(--color-primary-dark);
    border-color: var(--color-primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-outline {
    background: transparent;
    color: #fff;
    border-color: rgba(255,255,255,0.5);
}

.btn-outline:hover {
    background: rgba(255,255,255,0.1);
    border-color: #fff;
}

.btn-full {
    width: 100%;
}

/* Sections */
.section {
    padding: 96px 0;
}

.section-light {
    background: var(--color-bg);
}

.section-dark {
    background: var(--color-bg-dark);
    color: #fff;
}

.section-accent {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
    color: #fff;
}

.section-waves {
    position: relative;
    background: linear-gradient(180deg, #f0f9ff 0%, #e0f2fe 30%, #f8fafc 70%, #ffffff 100%);
    overflow: hidden;
}

.section-waves-alt {
    position: relative;
    background: linear-gradient(180deg, #ffffff 0%, #f0f9ff 30%, #e0f2fe 70%, #f8fafc 100%);
    overflow: hidden;
}

.wave-top,
.wave-bottom {
    position: absolute;
    left: 0;
    right: 0;
    height: 80px;
    pointer-events: none;
    z-index: 1;
}

.wave-top {
    top: 0;
    background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1440 320'%3E%3Cpath fill='%23ffffff' fill-opacity='1' d='M0,96L48,112C96,128,192,160,288,160C384,160,480,128,576,112C672,96,768,96,864,112C960,128,1056,160,1152,160C1248,160,1344,128,1392,112L1440,96L1440,0L1392,0C1344,0,1248,0,1152,0C1056,0,960,0,864,0C768,0,672,0,576,0C480,0,384,0,288,0C192,0,96,0,48,0L0,0Z'%3E%3C/path%3E%3C/svg%3E") no-repeat top center;
    background-size: cover;
}

.wave-bottom {
    bottom: 0;
    background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1440 320'%3E%3Cpath fill='%23ffffff' fill-opacity='1' d='M0,224L48,213.3C96,203,192,181,288,181.3C384,181,480,203,576,224C672,245,768,267,864,261.3C960,256,1056,224,1152,208C1248,192,1344,192,1392,192L1440,192L1440,320L1392,320C1344,320,1248,320,1152,320C1056,320,960,320,864,320C768,320,672,320,576,320C480,320,384,320,288,320C192,320,96,320,48,320L0,320Z'%3E%3C/path%3E%3C/svg%3E") no-repeat bottom center;
    background-size: cover;
}

.section-dark + .section-waves .wave-top,
.section-accent + .section-waves .wave-top {
    background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1440 320'%3E%3Cpath fill='%230f172a' fill-opacity='1' d='M0,96L48,112C96,128,192,160,288,160C384,160,480,128,576,112C672,96,768,96,864,112C960,128,1056,160,1152,160C1248,160,1344,128,1392,112L1440,96L1440,0L1392,0C1344,0,1248,0,1152,0C1056,0,960,0,864,0C768,0,672,0,576,0C480,0,384,0,288,0C192,0,96,0,48,0L0,0Z'%3E%3C/path%3E%3C/svg%3E") no-repeat top center;
    background-size: cover;
}

.section-waves + .section-dark .wave-top {
    background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1440 320'%3E%3Cpath fill='%23f0f9ff' fill-opacity='1' d='M0,96L48,112C96,128,192,160,288,160C384,160,480,128,576,112C672,96,768,96,864,112C960,128,1056,160,1152,160C1248,160,1344,128,1392,112L1440,96L1440,0L1392,0C1344,0,1248,0,1152,0C1056,0,960,0,864,0C768,0,672,0,576,0C480,0,384,0,288,0C192,0,96,0,48,0L0,0Z'%3E%3C/path%3E%3C/svg%3E") no-repeat top center;
    background-size: cover;
}

.section-waves .container,
.section-waves-alt .container {
    position: relative;
    z-index: 2;
}

.section-header {
    text-align: center;
    max-width: 720px;
    margin: 0 auto 64px;
}

.section-header.light {
    color: #fff;
}

.section-label {
    display: inline-block;
    font-size: 0.8125rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--color-primary);
    background: rgba(37, 99, 235, 0.08);
    padding: 6px 14px;
    border-radius: 100px;
    margin-bottom: 16px;
}

.section-accent .section-label {
    background: rgba(255,255,255,0.15);
    color: #fff;
}

.section-dark .section-label {
    background: rgba(255,255,255,0.08);
    color: var(--color-accent);
}

.section-title {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 700;
    line-height: 1.2;
    letter-spacing: -0.02em;
    color: var(--color-dark);
    margin-bottom: 16px;
}

.section-title.light {
    color: #fff;
}

.section-desc {
    font-size: 1.0625rem;
    color: var(--color-text-light);
    line-height: 1.7;
}

.section-desc.light {
    color: rgba(255,255,255,0.8);
}

/* Cards */
.cards-grid {
    display: grid;
    gap: 24px;
}

.cards-grid.cols-5 {
    grid-template-columns: repeat(5, 1fr);
}

.cards-grid.cols-4 {
    grid-template-columns: repeat(4, 1fr);
}

.cards-grid.cols-3 {
    grid-template-columns: repeat(3, 1fr);
}

.card {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 32px;
    transition: transform var(--transition), box-shadow var(--transition);
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.card-problem {
    text-align: center;
}

.card-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(37, 99, 235, 0.08);
    color: var(--color-primary);
    border-radius: var(--radius-md);
}

.card-problem h3 {
    font-size: 1.0625rem;
    font-weight: 600;
    color: var(--color-dark);
    margin-bottom: 12px;
}

.card-problem p {
    font-size: 0.9375rem;
    color: var(--color-text-light);
    line-height: 1.6;
}

/* Solution */
.solution-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: center;
}

.solution-desc {
    font-size: 1.0625rem;
    color: rgba(255,255,255,0.8);
    line-height: 1.7;
    margin-bottom: 32px;
}

.solution-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.solution-list li {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    font-size: 1rem;
    color: rgba(255,255,255,0.9);
}

.solution-check {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    min-width: 24px;
    background: var(--color-primary);
    color: #fff;
    border-radius: 50%;
    font-size: 0.75rem;
    margin-top: 2px;
}

.solution-image {
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

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

/* Architecture cards */
.card-arch {
    position: relative;
    padding-top: 48px;
}

.card-num {
    position: absolute;
    top: 20px;
    right: 20px;
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--color-primary);
    background: rgba(37, 99, 235, 0.08);
    padding: 4px 10px;
    border-radius: 100px;
}

.card-arch h3 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--color-dark);
    margin-bottom: 8px;
}

.arch-role {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-primary);
    margin-bottom: 16px;
}

.arch-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.arch-list li {
    font-size: 0.9375rem;
    color: var(--color-text-light);
    position: relative;
    padding-left: 18px;
}

.arch-list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 9px;
    width: 6px;
    height: 6px;
    background: var(--color-primary);
    border-radius: 50%;
}

/* Components */
.card-comp {
    background: rgba(255,255,255,0.12);
    border-color: rgba(255,255,255,0.15);
    color: #fff;
    padding: 0 0 32px;
    overflow: hidden;
}

.card-comp:hover {
    background: rgba(255,255,255,0.18);
}

.comp-img {
    width: 100%;
    aspect-ratio: 4/3;
    overflow: hidden;
    margin-bottom: 24px;
}

.comp-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}

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

.card-comp h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 12px;
    padding: 0 32px;
}

.card-comp p {
    font-size: 0.9375rem;
    color: rgba(255,255,255,0.85);
    line-height: 1.6;
    padding: 0 32px;
}

/* Application */
.app-layout {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 48px;
    align-items: start;
}

.app-main {
    background: var(--color-bg-light);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 40px;
}

.app-badge {
    display: inline-block;
    font-size: 0.8125rem;
    font-weight: 700;
    background: var(--color-primary);
    color: #fff;
    padding: 6px 14px;
    border-radius: 100px;
    margin-bottom: 16px;
}

.app-main h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-dark);
    margin-bottom: 16px;
}

.app-main p {
    font-size: 1rem;
    color: var(--color-text);
    line-height: 1.7;
}

.app-side {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.app-item {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 28px;
    transition: box-shadow var(--transition);
}

.app-item:hover {
    box-shadow: var(--shadow-md);
}

.app-item h4 {
    font-size: 1.0625rem;
    font-weight: 600;
    color: var(--color-dark);
    margin-bottom: 8px;
}

.app-item p {
    font-size: 0.9375rem;
    color: var(--color-text-light);
    line-height: 1.6;
}

/* Gallery */
.gallery {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    grid-template-rows: repeat(2, 220px);
    gap: 16px;
    margin-bottom: 48px;
}

.gallery-item {
    position: relative;
    border-radius: var(--radius-md);
    overflow: hidden;
    cursor: pointer;
}

.gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.gallery-item:hover img {
    transform: scale(1.08);
}

.gallery-item-large {
    grid-column: span 2;
    grid-row: span 2;
}

.gallery-caption {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 16px;
    background: linear-gradient(transparent, rgba(0,0,0,0.7));
    color: #fff;
    font-size: 0.875rem;
    font-weight: 500;
    opacity: 0;
    transition: opacity var(--transition);
}

.gallery-item:hover .gallery-caption {
    opacity: 1;
}

.video-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.video-item video {
    width: 100%;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
}

/* Gallery subtitles */
.gallery-subtitle {
    font-size: 1.25rem;
    font-weight: 600;
    color: #fff;
    margin-bottom: 24px;
    text-align: center;
}

.video-subtitle {
    margin-top: 48px;
}

/* Photo grid */
.photo-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.photo-item {
    cursor: pointer;
    text-align: center;
}

.photo-thumb {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    aspect-ratio: 4/3;
    background-size: cover;
    background-position: center;
    transition: transform var(--transition), box-shadow var(--transition);
    margin-bottom: 12px;
}

.photo-item {
    cursor: pointer;
}

.photo-item:hover .photo-thumb {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.photo-caption {
    font-size: 0.9375rem;
    color: var(--color-gray);
    text-align: center;
}

/* Slider */
.slider {
    position: relative;
    max-width: 900px;
    margin: 0 auto 48px;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.slider-track {
    position: relative;
    height: 520px;
    background: var(--color-dark);
}

.slide {
    position: absolute;
    inset: 0;
    opacity: 0;
    transition: opacity 0.5s ease;
    display: flex;
    flex-direction: column;
}

.slide.active {
    opacity: 1;
}

.slide img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    background: var(--color-dark);
}

.slide-caption {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 20px;
    background: linear-gradient(transparent, rgba(0,0,0,0.75));
    color: #fff;
    font-size: 1rem;
    font-weight: 500;
    text-align: center;
}

.slider-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 48px;
    height: 48px;
    border: none;
    background: rgba(255,255,255,0.15);
    color: #fff;
    font-size: 1.25rem;
    cursor: pointer;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background var(--transition);
    z-index: 10;
    backdrop-filter: blur(4px);
}

.slider-btn:hover {
    background: rgba(255,255,255,0.3);
}

.slider-prev {
    left: 16px;
}

.slider-next {
    right: 16px;
}

.slider-dots {
    display: flex;
    justify-content: center;
    gap: 10px;
    padding: 16px;
    position: absolute;
    bottom: 56px;
    left: 0;
    right: 0;
    z-index: 10;
}

.slider-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: rgba(255,255,255,0.4);
    border: none;
    cursor: pointer;
    transition: background var(--transition), transform var(--transition);
}

.slider-dot.active {
    background: #fff;
    transform: scale(1.2);
}

/* Video thumbnails */
.video-item {
    cursor: pointer;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.video-thumb {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    aspect-ratio: 9/16;
    max-height: 440px;
    width: 100%;
    background-size: cover;
    background-position: center;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform var(--transition), box-shadow var(--transition);
    border: 1px solid rgba(255,255,255,0.08);
    padding: 16px;
}

.video-thumb::before {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(15, 23, 42, 0.35);
    transition: background var(--transition);
    border-radius: var(--radius-lg);
}

.video-thumb:hover::before {
    background: rgba(15, 23, 42, 0.2);
}

.video-thumb:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 32px rgba(0,0,0,0.35);
}

.video-play-icon {
    color: #fff;
    filter: drop-shadow(0 2px 8px rgba(0,0,0,0.4));
    transition: transform var(--transition);
    opacity: 0.9;
    position: relative;
    z-index: 1;
}

.video-item:hover .video-play-icon {
    transform: scale(1.15);
    opacity: 1;
}

.video-caption {
    text-align: center;
    color: rgba(255,255,255,0.85);
    font-size: 0.9375rem;
    font-weight: 500;
    margin-top: 12px;
    width: 100%;
}

/* Video lightbox */
.video-lightbox {
    position: fixed;
    inset: 0;
    z-index: 9999;
    background: rgba(0,0,0,0.92);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.video-lightbox.active {
    opacity: 1;
}

.video-lightbox video,
.video-lightbox .lightbox-img {
    max-width: 85vw;
    max-height: 85vh;
    border-radius: var(--radius-md);
    box-shadow: 0 20px 60px rgba(0,0,0,0.5);
}

.video-lightbox-close {
    position: absolute;
    top: 24px;
    right: 24px;
    width: 44px;
    height: 44px;
    background: rgba(255,255,255,0.12);
    border: none;
    border-radius: 50%;
    color: #fff;
    font-size: 1.5rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background var(--transition);
}

.video-lightbox-close:hover {
    background: rgba(255,255,255,0.25);
}

.video-lightbox-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 48px;
    height: 48px;
    border: none;
    background: rgba(255,255,255,0.12);
    color: #fff;
    font-size: 1.25rem;
    cursor: pointer;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background var(--transition);
    z-index: 10;
    backdrop-filter: blur(4px);
}

.video-lightbox-nav:hover {
    background: rgba(255,255,255,0.25);
}

.video-lightbox-prev {
    left: 24px;
}

.video-lightbox-next {
    right: 24px;
}

.video-lightbox-caption {
    position: absolute;
    bottom: 32px;
    left: 0;
    right: 0;
    text-align: center;
    color: rgba(255,255,255,0.85);
    font-size: 1rem;
    font-weight: 500;
    z-index: 10;
}

/* Contact */
.contact-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: start;
}

.contact-desc {
    font-size: 1.0625rem;
    color: var(--color-text-light);
    line-height: 1.7;
    margin-bottom: 40px;
}

.contact-image {
    display: flex;
    align-items: center;
    justify-content: center;
}

.contact-image img {
    width: 100%;
    max-width: 480px;
    height: auto;
    border-radius: var(--radius-lg);
    object-fit: cover;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 16px;
}

.contact-icon {
    width: 48px;
    height: 48px;
    min-width: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-bg-light);
    color: var(--color-primary);
    border-radius: var(--radius-md);
}

.contact-label {
    display: block;
    font-size: 0.8125rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-light);
    margin-bottom: 4px;
}

.contact-value {
    font-size: 1.0625rem;
    font-weight: 500;
    color: var(--color-dark);
}

.contact-value:hover {
    color: var(--color-primary);
}

/* Form */
.contact-form-wrap {
    background: var(--color-bg-light);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 40px;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.form-group label {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-dark);
}

.form-group input,
.form-group textarea {
    padding: 12px 16px;
    font-size: 0.9375rem;
    font-family: var(--font-main);
    color: var(--color-dark);
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    transition: border-color var(--transition), box-shadow var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 100px;
}

/* Footer */
.footer {
    background: #022F77;
    color: rgba(255,255,255,0.7);
    padding: 64px 0 32px;
}

.footer-top {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 48px;
    flex-wrap: wrap;
    gap: 32px;
}

.footer-brand {
    font-size: 1.25rem;
    font-weight: 700;
    color: #fff;
}

.footer-tagline {
    font-size: 0.9375rem;
    font-weight: 400;
    color: rgba(255,255,255,0.5);
    margin-top: 8px;
}

.footer-links {
    display: flex;
    gap: 32px;
    flex-wrap: wrap;
}

.footer-links a {
    font-size: 0.9375rem;
    font-weight: 500;
    color: rgba(255,255,255,0.7);
    transition: color var(--transition);
}

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

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 32px;
    border-top: 1px solid rgba(255,255,255,0.1);
    flex-wrap: wrap;
    gap: 16px;
}

.footer-bottom p {
    font-size: 0.875rem;
    color: rgba(255,255,255,0.5);
}

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

.to-top:hover {
    background: rgba(255,255,255,0.2);
    transform: translateY(-2px);
}

.footer-socials {
    display: flex;
    gap: 16px;
}

.footer-socials a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: rgba(255,255,255,0.08);
    border-radius: 50%;
    color: rgba(255,255,255,0.7);
    transition: background var(--transition), color var(--transition);
}

.footer-socials a:hover {
    background: var(--color-primary);
    color: #fff;
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Responsive */
@media (max-width: 1024px) {
    .cards-grid.cols-5,
    .cards-grid.cols-4 {
        grid-template-columns: repeat(2, 1fr);
    }

    .solution-layout,
    .contact-layout {
        grid-template-columns: 1fr;
    }

    .app-layout {
        grid-template-columns: 1fr;
    }

    .gallery {
        grid-template-columns: repeat(2, 1fr);
        grid-template-rows: auto;
    }

    .gallery-item-large {
        grid-column: span 2;
        grid-row: span 1;
        height: 280px;
    }

    .gallery-item {
        height: 220px;
    }

    .video-grid,
    .photo-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .solution-image {
        order: -1;
    }
}

@media (max-width: 768px) {
    .section {
        padding: 64px 0;
    }

    .section-header {
        margin-bottom: 40px;
    }

    .nav-toggle {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        top: 72px;
        left: 0;
        right: 0;
        background: #fff;
        flex-direction: column;
        padding: 24px;
        gap: 16px;
        border-bottom: 1px solid var(--color-border);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all var(--transition);
    }

    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

    .cards-grid.cols-3,
    .cards-grid.cols-5,
    .cards-grid.cols-4 {
        grid-template-columns: 1fr;
    }

    .slider-track {
        height: 360px;
    }

    .slider-btn {
        width: 40px;
        height: 40px;
        font-size: 1rem;
    }

    .gallery-subtitle {
        font-size: 1.125rem;
    }

    .video-grid,
    .photo-grid {
        grid-template-columns: 1fr;
    }

    .footer-top {
        flex-direction: column;
    }

    .footer-links {
        gap: 16px;
    }

    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }

    .hero-actions {
        flex-direction: column;
        align-items: center;
    }

    .btn {
        width: 100%;
        max-width: 280px;
    }

    .app-main {
        padding: 24px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }

    .hero {
        padding: 100px 0 60px;
    }

    .card {
        padding: 24px;
    }

    .solution-list li {
        font-size: 0.9375rem;
    }

    .slider-track {
        height: 280px;
    }

    .logo-img {
        height: 40px;
        max-width: 175px;
    }
}

/* =============================================
   V2 — index1.html & detail pages
   ============================================= */

/* Hero card (semi-transparent background for second half) */
.hero-card {
    background: rgba(255, 255, 255, 0.25);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: var(--radius-lg);
    padding: 24px 28px;
    margin-top: 24px;
    margin-bottom: 2em;
    max-width: 720px;
    text-align: left;
}

.hero-card-text {
    font-size: 1.0625rem;
    color: var(--color-gray-light);
    line-height: 1.7;
    margin: 0;
}

.hero-card-text strong {
    color: #fff;
    font-weight: 600;
}

.hero-features {
    list-style: none;
    padding: 0;
    margin: 10px 0 10px;
}

.hero-features li {
    position: relative;
    padding-left: 24px;
    font-size: 1.0625rem;
    color: var(--color-gray-light);
    line-height: 1.8;
}

.hero-features li::before {
    content: '—';
    position: absolute;
    left: 0;
    color: var(--color-accent);
}

.hero-actions {
    margin-top: 1.5em;
}

/* Architecture illustration */
.arch-illustration {
    position: absolute;
    top: 28px;
    right: 48px;
    width: 150px;
    height: 150px;
    color: var(--color-accent);
    pointer-events: none;
}

/* Architecture cards v2 (2-column grid) */
.card-arch-v2 {
    position: relative;
    background: var(--color-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 32px;
    transition: transform var(--transition), box-shadow var(--transition);
    overflow: hidden;
}

.card-arch-v2:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.card-arch-v2 .card-num {
    display: none;
}

.card-arch-v2 h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: 8px;
}

.card-arch-v2 .arch-role {
    font-size: 1.0625rem;
    color: var(--color-gray);
    margin-bottom: 20px;
}

.card-arch-v2 .arch-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.card-arch-v2 .arch-list li {
    font-size: 1.0625rem;
    color: var(--color-text);
    padding: 8px 0 8px 24px;
    position: relative;
    line-height: 1.6;
}

.card-arch-v2 .arch-list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 16px;
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--color-accent);
}

.card-arch-v2 .arch-list a {
    color: var(--color-accent);
    font-weight: 700;
    text-decoration: underline;
    text-underline-offset: 3px;
    transition: color var(--transition);
}

.card-arch-v2 .arch-list a:hover {
    color: var(--color-accent-hover);
}

/* Detail pages */
.detail-page {
    padding-top: 116px;
    padding-bottom: 60px;
}

.detail-back {
    display: inline-block;
    font-size: 0.9375rem;
    color: var(--color-accent);
    text-decoration: none;
    margin-bottom: 32px;
    transition: color var(--transition);
}

.detail-back:hover {
    color: var(--color-accent-hover);
}

.detail-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 12px;
    width: 100%;
    max-width: 600px;
    min-height: 200px;
    margin: 0 auto 32px;
    border: 2px dashed var(--color-border);
    border-radius: var(--radius-lg);
    color: var(--color-gray);
    font-size: 0.9375rem;
}

.detail-placeholder-img {
    display: block;
    width: 100%;
    max-width: 600px;
    margin: 0 auto 32px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

.detail-illustrations {
    display: flex;
    gap: 24px;
    max-width: 800px;
    margin: 0 auto 32px;
}

.detail-illustrations .detail-placeholder-img {
    flex: 1;
    min-width: 0;
    margin-bottom: 0;
}

@media (max-width: 768px) {
    .detail-illustrations {
        flex-direction: column;
    }
}

.detail-content {
    max-width: 800px;
}

.detail-img {
    width: 100%;
    max-width: 600px;
    border-radius: var(--radius-md);
    margin-bottom: 24px;
    box-shadow: var(--shadow-md);
}

.detail-content h2 {
    font-size: 1.375rem;
    font-weight: 600;
    color: var(--color-text);
    margin: 40px 0 16px;
}

.detail-content h3 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--color-text);
    margin: 0 0 8px;
}

.detail-content p {
    font-size: 1rem;
    color: var(--color-gray);
    line-height: 1.7;
    margin-bottom: 16px;
}

.detail-list {
    list-style: none;
    padding: 0;
    margin: 0 0 24px;
}

.detail-list li {
    font-size: 1rem;
    color: var(--color-text);
    padding: 8px 0 8px 24px;
    position: relative;
    line-height: 1.6;
}

.detail-list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 16px;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--color-accent);
}

.detail-specs {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin: 24px 0;
}

.detail-spec {
    background: var(--color-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 16px 20px;
    font-size: 0.9375rem;
    color: var(--color-text);
    line-height: 1.6;
}

.detail-spec strong {
    display: block;
    font-size: 0.8125rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-accent);
    margin-bottom: 4px;
}

.detail-highlight {
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.08), rgba(59, 130, 246, 0.02));
    border: 1px solid rgba(59, 130, 246, 0.15);
    border-radius: var(--radius-lg);
    padding: 24px;
    margin: 32px 0;
}

.detail-highlight p {
    color: var(--color-text);
    margin-bottom: 0;
}

.detail-benefit {
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.08), rgba(16, 185, 129, 0.02));
    border: 1px solid rgba(16, 185, 129, 0.15);
    border-radius: var(--radius-lg);
    padding: 24px;
    margin: 32px 0;
}

.detail-benefit p {
    color: var(--color-text);
    margin-bottom: 0;
}

/* Responsive for detail pages */
@media (max-width: 768px) {
    .detail-content {
        max-width: 100%;
    }

    .detail-spec {
        padding: 12px 16px;
    }

    .detail-highlight,
    .detail-benefit {
        padding: 20px;
    }
}