@import url('https://fonts.googleapis.com/css2?family=Roboto:wght@400;500;700;700&display=swap');

:root {
    --color-bg: #ffffff;
    --color-dark: #18181b;
    --color-primary: #27272a;
    --color-accent: #52525b;
    --color-text: #3f3f46;
    --color-muted: #52525b;
    --color-border: #e4e4e7;
    --container-width: 1400px;
    --container-padding: 20px;
    --font-main: 'Roboto', -apple-system, BlinkMacSystemFont, sans-serif;
    --transition: 0.3s cubic-bezier(0.25, 1, 0.5, 1);
}

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

html {
    scroll-behavior: smooth;
}

body {
    background-color: var(--color-bg);
    color: var(--color-text);
    font-family: var(--font-main);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

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

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

ul {
    list-style: none;
}

.container {
    width: 100%;
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

.section-title {
    font-size: clamp(28px, 6vw, 42px);
    font-weight: 700;
    margin-bottom: 32px;
    letter-spacing: -1px;
    color: var(--color-dark);
    text-align: center;
}

.text-white {
    color: var(--color-bg) !important;
}

.section { padding: 60px 0; }
.bg-light { background: #fafafa; }
.bg-dark { background: var(--color-dark); color: #ffffff; }
.bg-dark h1, .bg-dark h2, .bg-dark h3, .bg-dark h4, .bg-dark h5 { color: #ffffff; }
.bg-dark p, .bg-dark span { color: #a1a1aa; }

.grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 24px;
}

.split-layout {
    display: grid;
    grid-template-columns: 1fr;
    gap: 40px;
}

.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 16px 24px;
    background: var(--color-primary);
    color: #ffffff;
    font-weight: 700;
    font-size: 14px;
    letter-spacing: 1px;
    text-transform: uppercase;
    border: none;
    border-radius: 0;
    cursor: pointer;
    transition: var(--transition);
    width: 100%;
    text-align: center;
}

.button:hover {
    background: var(--color-dark);
    transform: translateY(-2px);
    box-shadow: 4px 4px 0px rgba(0,0,0,0.1);
}

.button-link {
    display: inline-flex;
    justify-content: center;
    align-items: center;
    gap: 8px;
    font-weight: 700;
    font-size: 14px;
    letter-spacing: 1px;
    text-transform: uppercase;
    color: var(--color-primary);
    border-bottom: 2px solid var(--color-border);
    padding-bottom: 4px;
    transition: var(--transition);
    width: 100%;
}

.button-link:hover {
    color: var(--color-dark);
    border-color: var(--color-dark);
}

.button-link--icon svg {
    transition: var(--transition);
}

.button-link--icon:hover svg {
    transform: translateY(2px);
}

.button-outline {
    background: transparent;
    border: 1px solid var(--color-muted);
    color: #ffffff;
    display: inline-flex;
    justify-content: center;
    align-items: center;
    gap: 12px;
    width: 100%;
    padding: 16px 24px;
    font-weight: 700;
    font-size: 14px;
    text-transform: uppercase;
    transition: var(--transition);
}

.button-outline:hover {
    background: #ffffff;
    color: var(--color-dark);
    border-color: #ffffff;
}

.button-outline:hover svg {
    transform: translateY(2px);
}

.header {
    position: absolute;
    top: 0; 
    left: 0; 
    width: 100%;
    z-index: 100;
    padding: 30px 0;
}

.header__container {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

.header__nav {
    display: flex;
    justify-content: center;
}

.header__menu {
    display: flex;
    gap: 30px;
    justify-content: center;
    align-items: center;
}

.header__menu a {
    font-size: 13px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--color-primary);
    transition: var(--transition);
}

.header__menu a:hover {
    color: var(--color-dark);
}

.lang-switcher {
    position: absolute;
    right: var(--container-padding);
    top: 50%;
    transform: translateY(-50%);
    z-index: 110;
}

.lang-switcher__items {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.lang-active {
    color: var(--color-muted);
    opacity: 0.5;
    cursor: default;
}

.lang-divider {
    color: var(--color-border);
}

.lang-switcher__items a {
    color: var(--color-primary);
    transition: var(--transition);
}

.lang-switcher__items a:hover {
    color: var(--color-dark);
}

.hero {
    position: relative;
    padding-top: 140px;
    padding-bottom: 60px;
    display: flex;
    align-items: center;
    overflow: hidden;
}

@media (max-width: 768px) {
    .hero {
        padding-top: 80px;
    }
}

.hero__left-bg { display: none; }

.hero__container {
    display: flex;
    flex-direction: column;
    gap: 40px;
    z-index: 2;
}

.hero__visual {
    width: 100%;
    display: flex;
    justify-content: center;
}

.hero__image {
    width: 100%;
    max-width: 320px;
    object-fit: contain;
    mix-blend-mode: multiply;
}

.hero__content {
    text-align: center;
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.hero__breadcrumbs {
    font-size: 11px;
    font-weight: 700;
    color: var(--color-muted);
    text-transform: uppercase;
    letter-spacing: 2px;
}

.hero__title {
    font-size: clamp(36px, 10vw, 80px);
    font-weight: 700;
    line-height: 1.1;
    color: var(--color-dark);
    letter-spacing: -1px;
    text-transform: uppercase;
}

.hero__lead {
    font-size: 15px;
    color: var(--color-text);
    line-height: 1.6;
}

.hero__stats {
    display: flex;
    justify-content: space-between;
    padding-top: 24px;
    border-top: 1px solid var(--color-border);
}

.stat-item {
    text-align: center;
    font-size: 11px;
    font-weight: 700;
    color: var(--color-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.stat-item strong {
    display: block;
    font-size: clamp(24px, 6vw, 32px);
    color: var(--color-dark);
    font-weight: 700;
    margin-bottom: 4px;
}

.hero__btns {
    display: flex;
    flex-direction: column;
    gap: 24px;
    width: 100%;
}

.card {
    background: #ffffff;
    padding: 30px 24px;
    border: 1px solid var(--color-border);
    position: relative;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
}

.card:hover {
    border-color: var(--color-dark);
    transform: translateY(-4px);
}

.card__num {
    font-size: 60px;
    font-weight: 700;
    line-height: 0.8;
    color: #f4f4f5;
    position: absolute;
    top: 20px;
    right: 20px;
    z-index: 0;
}

.card h3, .card p { position: relative; z-index: 1; }

.card h3 {
    font-size: 18px;
    font-weight: 700;
    margin-top: 30px;
    margin-bottom: 12px;
    color: var(--color-dark);
    text-transform: uppercase;
}

.card p {
    font-size: 15px;
    flex-grow: 1;
}

.specs-table { border-top: 1px solid rgba(255,255,255,0.1); }
.specs-table li {
    display: flex;
    justify-content: space-between;
    padding: 16px 0;
    border-bottom: 1px solid rgba(255,255,255,0.05);
    font-size: 14px;
}

.kit { margin-top: 32px; }

.instruction-block {
    margin-top: 32px;
    padding-top: 24px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.case-node {
    padding: 24px;
    border-left: 2px solid var(--color-muted);
    background: rgba(255,255,255,0.03);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
}

.case-node:hover {
    background: rgba(255,255,255,0.06);
    border-color: #ffffff;
}

.case-node h5 {
    font-size: 15px;
    font-weight: 700;
    margin-bottom: 12px;
    text-transform: uppercase;
    color: #ffffff;
}

.case-node p {
    font-size: 14px;
    color: #a1a1aa;
    flex-grow: 1;
}

.feature-card {
    background: #ffffff;
    padding: 24px;
    border: 1px solid var(--color-border);
    text-align: center;
}

.feature-card h3 {
    font-size: 16px;
    font-weight: 700;
    text-transform: uppercase;
    margin-bottom: 8px;
}

.feature-card p { font-size: 14px; color: var(--color-muted); }

.faq-container { margin: 0 auto; }
.faq-item { border-bottom: 1px solid var(--color-border); }
.faq-input { display: none; }

.faq-label {
    display: block;
    padding: 20px 40px 20px 0;
    font-weight: 700;
    cursor: pointer;
    position: relative;
    text-transform: uppercase;
    font-size: 14px;
}

.faq-label::after {
    content: '+';
    position: absolute;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    font-size: 20px;
    transition: var(--transition);
}

.faq-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.faq-content p {
    padding-bottom: 20px;
    font-size: 15px;
}

.faq-input:checked ~ .faq-label::after {
    content: '-';
    transform: translateY(-50%) rotate(180deg);
}
.faq-input:checked ~ .faq-content { max-height: 200px; }


.video-section {
    background-color: var(--color-primary);
    padding: 60px 0;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.video-wrapper {
    position: relative;
    width: 100%;
    max-width: 1000px;
    margin: 0 auto;
    aspect-ratio: 16 / 9;
    background: var(--color-dark);
    border: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.video-wrapper iframe {
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 100%;
}

.video-cover {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
    cursor: pointer;
    z-index: 2;
}

.play-button {
    width: 64px;
    height: 64px;
    border-radius: 0;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: #ffffff;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.play-button svg { width: 24px; height: 24px; }

.video-wrapper:hover .play-button {
    background: #ffffff;
    color: var(--color-dark);
}

.video-title {
    color: #a1a1aa;
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.video-wrapper:hover .video-title { color: #ffffff; }

#order {
    padding: 60px 0;
    border-top: 1px solid var(--color-border);
}

.order-block {
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.order-quote {
    font-size: clamp(22px, 5vw, 36px);
    font-weight: 700;
    line-height: 1.3;
    color: var(--color-dark);
    margin-bottom: 24px;
    letter-spacing: -1px;
}

.order-disclaimer {
    background: #ffffff;
    border: 1px solid var(--color-border);
    border-left: 4px solid var(--color-muted);
    padding: 16px;
    font-size: 12px;
    text-transform: uppercase;
    margin-bottom: 32px;
    width: 100%;
    text-align: left;
}

.order-disclaimer strong { color: var(--color-dark); }
.order-action { width: 100%; }

.footer {
    padding: 40px 0;
    background: var(--color-dark);
    color: #a1a1aa;
    font-size: 13px;
    text-align: center;
}

@media (max-width: 768px) {
    .header { padding: 20px 0; }
    .header__container {
        flex-direction: column;
        gap: 16px;
    }
    .header__menu {
        gap: 16px;
        flex-wrap: wrap;
    }
    .lang-switcher {
        position: static;
        transform: none;
    }
}

@media (min-width: 768px) {
    .section-title { text-align: left; margin-bottom: 48px; }
    
    .grid--2, .grid--4 { grid-template-columns: repeat(2, 1fr); gap: 32px; }
    .grid--3 { grid-template-columns: repeat(3, 1fr); gap: 32px; }
    
    .hero__stats { justify-content: flex-start; gap: 40px; }
    .stat-item { text-align: left; }
    
    .hero__btns { 
        flex-direction: row; 
        width: auto; 
    }
    .button, .button-link, .button-outline { width: auto; }
    .button { padding: 16px 36px; }
    
    .split-layout { grid-template-columns: 1fr 1fr; gap: 60px; }
    
    .video-section { padding: 100px 0; }
    .play-button { width: 80px; height: 80px; }
    .play-button svg { width: 32px; height: 32px; }
    .video-title { font-size: 14px; }
    
    #order { padding: 100px 0; }
    .order-action { width: auto; }
}

@media (min-width: 1024px) {
    .grid--4 { grid-template-columns: repeat(4, 1fr); }
    
    .hero { min-height: 100vh; padding: 0; }
    .hero__left-bg {
        display: block;
        position: absolute;
        top: 0; left: 0; width: 35%; height: 100%;
        background: var(--color-primary);
        z-index: 1;
    }
    .hero__vertical-label {
        position: absolute;
        left: -250px; top: 50%;
        transform: translateY(-50%) rotate(-90deg);
        font-size: 140px;
        font-weight: 700;
        color: rgba(255,255,255,0.03);
        white-space: nowrap;
        pointer-events: none;
        z-index: 2;
    }
    
    .hero__container { 
        flex-direction: row; 
        align-items: stretch; 
        gap: 80px; 
    }
    .hero__visual { flex: 0 0 45%; order: 0; }
    .hero__image { max-width: 650px; }
    
    .hero__content { 
        flex: 1; 
        text-align: left; 
        justify-content: center;
    }
    
    .split-layout { grid-template-columns: 1fr 2fr; gap: 100px; }
}

.page-header {
    padding-top: 140px;
    padding-bottom: 60px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.default-content {
    margin: 0 auto;
    background: #ffffff;
    min-height: 95vh;
}

.default-content h2 {
    font-size: 28px;
    font-weight: 700;
    color: var(--color-dark);
    margin: 40px 0 20px;
    text-transform: uppercase;
}

.default-content h3 {
    font-size: 22px;
    font-weight: 700;
    color: var(--color-dark);
    margin: 30px 0 16px;
}

.default-content p {
    margin-bottom: 20px;
    font-size: 16px;
    line-height: 1.7;
    color: var(--color-text);
}

.default-content ul, 
.default-content ol {
    margin-bottom: 24px;
    padding-left: 24px;
}

.default-content li {
    margin-bottom: 10px;
    font-size: 16px;
    line-height: 1.6;
}

.default-content a {
    color: var(--color-primary);
    text-decoration: underline;
    font-weight: 700;
}

.default-content a:hover {
    color: var(--color-dark);
    text-decoration: none;
}

.error-section {
    padding-top: 160px;
    padding-bottom: 100px;
    min-height: 95vh;
    display: flex;
    align-items: center;
    background: var(--color-bg);
}

.error-content {
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
}

.error-content .section-title {
    text-align: center;
    margin-bottom: 20px;
}

.error-code {
    font-size: clamp(100px, 20vw, 180px);
    font-weight: 700;
    line-height: 0.9;
    color: var(--color-dark);
    letter-spacing: -5px;
    margin-bottom: 20px;
    position: relative;
    display: inline-block;
}


.error-description {
    font-size: 16px;
    color: var(--color-text);
    margin-bottom: 40px;
    line-height: 1.6;
}

.error-action {
    display: flex;
    justify-content: center;
}


@media (max-width: 768px) {
    .page-header {
        padding-top: 120px;
        padding-bottom: 40px;
    }
    
    .default-content {
        padding: 24px;
    }
    
    .error-section {
        padding-top: 120px;
        min-height: 70vh;
    }
}