/* Reset & base */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    font-size: var(--text-base);
    line-height: 1.6;
    color: var(--text-primary);
    background: var(--bg-primary);
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

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

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

button {
    font-family: inherit;
}

/* Background grid + noise */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: -2;
    background-image:
        linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
    background-size: 60px 60px;
}

.noise-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 9999;
    opacity: 0.04;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)'/%3E%3C/svg%3E");
}

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

/* Gradient text */
.gradient-text {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Glow button */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    font-family: var(--font-body);
    font-size: var(--text-sm);
    font-weight: 600;
    padding: 1rem 2rem;
    border-radius: var(--radius);
    transition: all var(--transition-base);
    cursor: pointer;
    border: none;
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: var(--gradient-primary);
    color: var(--bg-primary);
    box-shadow: 0 0 30px rgba(0, 212, 255, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 40px rgba(0, 212, 255, 0.5), 0 10px 30px rgba(168, 85, 247, 0.2);
}

.btn-ghost {
    background: transparent;
    color: var(--text-primary);
    border: 1px solid var(--border-strong);
}

.btn-ghost:hover {
    border-color: var(--accent-cyan);
    color: var(--accent-cyan);
    box-shadow: 0 0 20px rgba(0, 212, 255, 0.15);
}

.btn-large {
    font-size: var(--text-base);
    padding: 1.125rem 2.5rem;
}

/* Header */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: var(--space-md) 0;
    transition: background var(--transition-base), padding var(--transition-base);
}

.site-header.scrolled {
    background: rgba(5, 5, 7, 0.85);
    backdrop-filter: blur(20px);
    padding: var(--space-sm) 0;
    border-bottom: 1px solid var(--border);
}

.main-nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-md);
}

.logo {
    font-family: var(--font-display);
    font-size: var(--text-xl);
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--text-primary);
    flex-shrink: 0;
    position: relative;
    z-index: 1002;
}

.logo span {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: var(--space-xl);
    margin-left: auto;
}

.nav-links a {
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--text-secondary);
    position: relative;
    transition: color var(--transition-fast);
}

.nav-links a:hover {
    color: var(--text-primary);
}

.nav-cta {
    font-size: var(--text-sm);
    font-weight: 600;
    padding: 0.6rem 1.25rem;
    border: 1px solid var(--border-strong);
    border-radius: var(--radius);
    color: var(--text-primary);
    transition: all var(--transition-fast);
    flex-shrink: 0;
    position: relative;
    z-index: 1002;
}

.nav-cta:hover {
    border-color: var(--accent-cyan);
    color: var(--accent-cyan);
    box-shadow: 0 0 20px rgba(0, 212, 255, 0.15);
}

/* Mobile menu */
.menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    width: 44px;
    height: 44px;
    background: var(--bg-card);
    border: 1px solid var(--border-strong);
    border-radius: var(--radius);
    cursor: pointer;
    position: relative;
    z-index: 1002;
    gap: 6px;
}

.menu-line {
    display: block;
    width: 20px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 1px;
    transition: transform 0.3s ease, opacity 0.3s ease;
}

.menu-toggle.active .menu-line:first-child {
    transform: translateY(4px) rotate(45deg);
}

.menu-toggle.active .menu-line:last-child {
    transform: translateY(-4px) rotate(-45deg);
}

@media (max-width: 768px) {
    .menu-toggle {
        display: flex;
    }

    .nav-links {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100vh;
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: var(--space-xl);
        background: rgba(5, 5, 7, 0.98);
        backdrop-filter: blur(20px);
        margin: 0;
        padding: var(--space-2xl) 0;
        opacity: 0;
        visibility: hidden;
        transform: translateY(-8px);
        transition: opacity 0.4s ease, visibility 0.4s ease, transform 0.4s ease;
        z-index: 1001;
    }

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

    .nav-links a {
        font-size: var(--text-3xl);
        font-weight: 700;
        color: var(--text-primary);
    }

    .nav-cta {
        display: none;
    }

    /* В статьях кнопку «← Все материалы» оставляем видимой на мобильных */
    .nav-cta.nav-back {
        display: inline-flex;
    }
}

/* Hero */
.hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: calc(var(--space-3xl) + 5rem) 0 var(--space-3xl);
    position: relative;
    background: var(--bg-primary);
    overflow: hidden;
}

.hero-glow {
    position: absolute;
    top: 50%;
    right: 10%;
    width: 500px;
    height: 500px;
    background: var(--gradient-glow);
    border-radius: 50%;
    filter: blur(80px);
    transform: translate(-50%, -50%);
    pointer-events: none;
    opacity: 0.7;
    animation: glowPulse 8s ease-in-out infinite;
}

@keyframes glowPulse {
    0%, 100% { transform: translate(-50%, -50%) scale(1); opacity: 0.7; }
    50% { transform: translate(-50%, -50%) scale(1.15); opacity: 0.9; }
}

.hero-3d {
    position: absolute;
    top: 50%;
    right: 8%;
    transform: translateY(-50%);
    width: clamp(280px, 32vw, 420px);
    height: clamp(280px, 32vw, 420px);
    pointer-events: none;
    z-index: 0;
    perspective: 1000px;
}

.cube-scene {
    width: 100%;
    height: 100%;
    position: relative;
    transform-style: preserve-3d;
    animation: cubeFloat 6s ease-in-out infinite;
}

@keyframes cubeFloat {
    0%, 100% { transform: translateY(0) rotateX(15deg) rotateY(-20deg); }
    50% { transform: translateY(-20px) rotateX(20deg) rotateY(-15deg); }
}

.cube {
    position: absolute;
    width: 140px;
    height: 140px;
    top: 50%;
    left: 50%;
    margin: -70px 0 0 -70px;
    transform-style: preserve-3d;
    animation: cubeRotate 12s linear infinite;
}

.cube-face {
    position: absolute;
    width: 140px;
    height: 140px;
    border: 2px solid rgba(0, 212, 255, 0.4);
    background: rgba(0, 212, 255, 0.05);
    box-shadow: 0 0 30px rgba(0, 212, 255, 0.15);
    backdrop-filter: blur(4px);
}

.cube-face:nth-child(1) { transform: rotateY(0deg) translateZ(70px); }
.cube-face:nth-child(2) { transform: rotateY(90deg) translateZ(70px); }
.cube-face:nth-child(3) { transform: rotateY(180deg) translateZ(70px); }
.cube-face:nth-child(4) { transform: rotateY(-90deg) translateZ(70px); }
.cube-face:nth-child(5) { transform: rotateX(90deg) translateZ(70px); }
.cube-face:nth-child(6) { transform: rotateX(-90deg) translateZ(70px); }

.cube-face.purple {
    border-color: rgba(168, 85, 247, 0.4);
    background: rgba(168, 85, 247, 0.05);
    box-shadow: 0 0 30px rgba(168, 85, 247, 0.15);
}

@keyframes cubeRotate {
    0% { transform: rotateX(0) rotateY(0); }
    100% { transform: rotateX(360deg) rotateY(360deg); }
}

.floating-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(1px);
}

.floating-orb:nth-of-type(2) {
    width: 80px;
    height: 80px;
    background: radial-gradient(circle at 30% 30%, rgba(236, 72, 153, 0.8), rgba(168, 85, 247, 0.3));
    box-shadow: 0 0 40px rgba(236, 72, 153, 0.4);
    top: 15%;
    right: 5%;
    animation: orbFloat1 5s ease-in-out infinite;
}

.floating-orb:nth-of-type(3) {
    width: 50px;
    height: 50px;
    background: radial-gradient(circle at 30% 30%, rgba(0, 212, 255, 0.8), rgba(59, 130, 246, 0.3));
    box-shadow: 0 0 30px rgba(0, 212, 255, 0.4);
    bottom: 15%;
    left: 5%;
    animation: orbFloat2 4s ease-in-out infinite;
}

@keyframes orbFloat1 {
    0%, 100% { transform: translate(0, 0); }
    50% { transform: translate(15px, -25px); }
}

@keyframes orbFloat2 {
    0%, 100% { transform: translate(0, 0); }
    50% { transform: translate(-20px, 15px); }
}

.hero-grid {
    display: grid;
    grid-template-columns: 1.3fr 0.7fr;
    gap: var(--space-xl);
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-content > [data-hero-animate] {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.hero-content > [data-hero-animate].hero-visible {
    opacity: 1;
    transform: translateY(0);
}

.hero-label {
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--accent-cyan);
    margin-bottom: var(--space-md);
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
}

.hero-label::before {
    content: '';
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--accent-cyan);
    box-shadow: 0 0 10px var(--accent-cyan);
}

.hero-title {
    font-family: var(--font-display);
    font-size: var(--text-6xl);
    font-weight: 800;
    line-height: 1.05;
    letter-spacing: -0.03em;
    margin-bottom: var(--space-lg);
}

.hero-title .line {
    display: block;
}

.hero-title .accent {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-text {
    font-size: var(--text-lg);
    color: var(--text-secondary);
    max-width: 560px;
    margin-bottom: var(--space-xl);
}

.hero-actions {
    display: flex;
    gap: var(--space-md);
    flex-wrap: wrap;
}

.hero-stats {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
    position: relative;
    z-index: 5;
    pointer-events: auto;
}

.stat-card {
    background: rgba(10, 10, 16, 0.75);
    border: 1px solid var(--border);
    padding: var(--space-lg);
    border-radius: var(--radius-lg);
    backdrop-filter: blur(16px);
    transition: all var(--transition-base);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

.stat-card:hover {
    background: rgba(15, 15, 28, 0.85);
    border-color: var(--border-glow);
    box-shadow: 0 0 30px rgba(0, 212, 255, 0.15), 0 8px 32px rgba(0, 0, 0, 0.3);
    transform: translateY(-4px);
}

.stat-card-offset {
    margin-left: var(--space-xl);
}

.stat-number {
    display: block;
    font-family: var(--font-display);
    font-size: var(--text-3xl);
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--space-xs);
}

.stat-caption {
    font-size: var(--text-sm);
    color: var(--text-secondary);
    line-height: 1.5;
}

.hero-line {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--accent-cyan), var(--accent-purple), var(--accent-pink), transparent);
    opacity: 0.5;
}

/* Sections */
.section {
    padding: var(--space-3xl) 0;
    position: relative;
}

.section:nth-child(even) {
    background: var(--bg-secondary);
}

.section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-md);
    margin-bottom: var(--space-2xl);
    flex-wrap: wrap;
}

.section-title-wrapper {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.section-number {
    font-family: var(--font-mono);
    font-size: var(--text-sm);
    color: var(--accent-cyan);
    border: 1px solid var(--border-glow);
    padding: 0.35rem 0.7rem;
    border-radius: var(--radius);
}

.section-title {
    font-family: var(--font-display);
    font-size: var(--text-4xl);
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--text-primary);
}

.section-subtitle {
    font-size: var(--text-base);
    color: var(--text-secondary);
    max-width: 450px;
}

/* About */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1.3fr;
    gap: var(--space-xl);
    align-items: start;
}

.about-lead {
    font-size: var(--text-xl);
    font-weight: 500;
    line-height: 1.5;
    color: var(--text-primary);
    position: relative;
}

.about-photo-wrapper {
    position: relative;
    width: 100%;
    max-width: 320px;
    margin-bottom: var(--space-xl);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.about-photo {
    width: 100%;
    aspect-ratio: 3 / 4;
    object-fit: cover;
    object-position: center top;
    filter: contrast(1.05) saturate(0.9);
    display: block;
}

.about-photo-glow {
    position: absolute;
    inset: -20px;
    border-radius: var(--radius-lg);
    background: var(--gradient-glow);
    filter: blur(30px);
    opacity: 0.5;
    z-index: -1;
}

.about-photo-wrapper::after {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: var(--radius-lg);
    border: 1px solid rgba(0, 212, 255, 0.2);
    box-shadow: inset 0 0 40px rgba(0, 212, 255, 0.1);
    pointer-events: none;
}

.about-name {
    font-family: var(--font-display);
    font-size: var(--text-2xl);
    font-weight: 700;
    letter-spacing: -0.01em;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-top: var(--space-md);
    margin-bottom: var(--space-sm);
}

.about-lead p + p {
    margin-top: var(--space-md);
    color: var(--text-secondary);
    font-size: var(--text-lg);
    font-weight: 400;
}

.expertise-list {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-md);
}

.expertise-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    padding: var(--space-lg);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.expertise-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition-base);
}

.expertise-card:hover {
    background: var(--bg-card-hover);
    border-color: var(--border-glow);
    transform: translateY(-4px);
}

.expertise-card:hover::before {
    transform: scaleX(1);
}

.expertise-icon {
    width: 44px;
    height: 44px;
    border-radius: var(--radius);
    background: var(--gradient-soft);
    border: 1px solid var(--border-glow);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--text-lg);
    margin-bottom: var(--space-md);
}

.expertise-card h3 {
    font-family: var(--font-display);
    font-size: var(--text-xl);
    font-weight: 700;
    margin-bottom: var(--space-xs);
}

.expertise-card p {
    font-size: var(--text-sm);
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Services */
.services-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-md);
}

.service-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    padding: var(--space-lg);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition-base);
}

.service-card:hover {
    background: var(--bg-card-hover);
    border-color: var(--border-glow);
    transform: translateY(-4px);
}

.service-card:hover::before {
    transform: scaleX(1);
}

.service-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: var(--space-sm);
    margin-bottom: var(--space-sm);
}

.service-card h3 {
    font-family: var(--font-display);
    font-size: var(--text-2xl);
    font-weight: 700;
}

.service-tag {
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    color: var(--accent-cyan);
    border: 1px solid var(--border-glow);
    padding: 0.35rem 0.6rem;
    border-radius: var(--radius);
    white-space: nowrap;
}

.service-card p {
    font-size: var(--text-sm);
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Process */
.process-steps {
    display: flex;
    align-items: stretch;
    gap: var(--space-md);
}

.process-step {
    flex: 1;
    background: var(--bg-card);
    border: 1px solid var(--border);
    padding: var(--space-lg);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
    position: relative;
}

.process-step:hover {
    border-color: var(--border-glow);
    background: var(--bg-card-hover);
}

.process-num {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: var(--gradient-soft);
    border: 1px solid var(--border-glow);
    font-family: var(--font-mono);
    font-size: var(--text-base);
    font-weight: 600;
    color: var(--accent-cyan);
    margin-bottom: var(--space-md);
}

.process-step h3 {
    font-family: var(--font-display);
    font-size: var(--text-xl);
    font-weight: 700;
    margin-bottom: var(--space-xs);
}

.process-step p {
    font-size: var(--text-sm);
    color: var(--text-secondary);
    line-height: 1.6;
}

.process-connector {
    width: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent-cyan);
    font-size: var(--text-xl);
    padding-top: var(--space-lg);
}

/* Cases */
.cases {
    background: var(--bg-primary) !important;
}

.cases-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-md);
}

.case-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    padding: var(--space-lg);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
    display: flex;
    flex-direction: column;
    position: relative;
    overflow: hidden;
}

.case-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition-base);
}

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

.case-card:hover::before {
    transform: scaleX(1);
}

.case-meta {
    margin-bottom: var(--space-sm);
}

.case-tag {
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    color: var(--accent-cyan);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    border: 1px solid var(--border-glow);
    padding: 0.25rem 0.5rem;
    border-radius: var(--radius);
}

.case-card h3 {
    font-family: var(--font-display);
    font-size: var(--text-xl);
    font-weight: 700;
    margin-bottom: var(--space-md);
    line-height: 1.25;
}

.case-card p {
    font-size: var(--text-sm);
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: var(--space-sm);
}

.case-card p:last-child {
    margin-bottom: 0;
}

.case-card p strong {
    color: var(--text-primary);
    font-weight: 600;
}

.case-result {
    margin-top: auto;
    padding-top: var(--space-md);
    font-family: var(--font-mono);
    font-size: var(--text-sm);
    color: var(--accent-cyan);
}

/* Materials */
.materials-list {
    display: flex;
    flex-direction: column;
    border-top: 1px solid var(--border);
}

.material-item {
    display: grid;
    grid-template-columns: 1fr auto;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-lg) 0;
    border-bottom: 1px solid var(--border);
    transition: all var(--transition-base);
}

.material-item:hover {
    padding-left: var(--space-sm);
    border-color: var(--border-glow);
}

.material-item:hover .material-arrow {
    color: var(--accent-cyan);
    transform: translateX(6px);
}

.material-date {
    font-family: var(--font-mono);
    font-size: var(--text-sm);
    color: var(--text-muted);
}

.material-item h3 {
    font-family: var(--font-display);
    font-size: var(--text-xl);
    font-weight: 600;
    color: var(--text-primary);
    transition: color var(--transition-fast);
}

.material-item:hover h3 {
    color: var(--accent-cyan);
}

.material-arrow {
    font-size: var(--text-xl);
    color: var(--text-muted);
    transition: all var(--transition-fast);
}

/* FAQ */
.faq {
    background: var(--bg-secondary) !important;
}

.faq-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
    max-width: 900px;
}

.faq-item {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--transition-base);
}

.faq-item:hover {
    border-color: var(--border-glow);
}

.faq-question {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-lg);
    background: transparent;
    border: none;
    color: var(--text-primary);
    font-family: var(--font-display);
    font-size: var(--text-lg);
    font-weight: 600;
    text-align: left;
    cursor: pointer;
    transition: color var(--transition-fast);
}

.faq-question:hover {
    color: var(--accent-cyan);
}

.faq-icon {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    border: 1px solid var(--border-glow);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent-cyan);
    font-size: var(--text-lg);
    flex-shrink: 0;
    transition: transform var(--transition-base);
}

.faq-item.active .faq-icon {
    transform: rotate(45deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-base), padding var(--transition-base);
}

.faq-item.active .faq-answer {
    max-height: 300px;
}

.faq-answer p {
    padding: 0 var(--space-lg) var(--space-lg);
    color: var(--text-secondary);
    font-size: var(--text-sm);
    line-height: 1.7;
}

/* Contact */
.contact {
    background: var(--bg-primary) !important;
    position: relative;
    overflow: hidden;
}

.contact::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--accent-cyan), var(--accent-purple), var(--accent-pink), transparent);
    opacity: 0.5;
}

.contact-glow {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 600px;
    height: 600px;
    background: var(--gradient-glow);
    border-radius: 50%;
    filter: blur(100px);
    transform: translate(-50%, -50%);
    pointer-events: none;
    opacity: 0.5;
}

.contact-grid {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: var(--space-xl);
    align-items: center;
    position: relative;
    z-index: 1;
}

.contact-title {
    font-family: var(--font-display);
    font-size: var(--text-4xl);
    font-weight: 800;
    line-height: 1.1;
    letter-spacing: -0.02em;
    margin-bottom: var(--space-lg);
}

.contact-text {
    font-size: var(--text-lg);
    color: var(--text-secondary);
    max-width: 520px;
    margin-bottom: var(--space-xl);
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
    padding: var(--space-lg);
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    backdrop-filter: blur(10px);
}

.info-block {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.info-label {
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.info-link,
.info-value {
    font-size: var(--text-base);
    color: var(--text-primary);
}

.info-link {
    transition: color var(--transition-fast);
    border-bottom: 1px solid var(--border);
    padding-bottom: 0.25rem;
    display: inline-block;
}

.info-link:hover {
    color: var(--accent-cyan);
    border-color: var(--accent-cyan);
}

/* Footer */
.site-footer {
    padding: var(--space-lg) 0;
    border-top: 1px solid var(--border);
    background: var(--bg-primary);
}

.footer-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--space-md);
}

.footer-copy {
    font-size: var(--text-sm);
    color: var(--text-muted);
}

.footer-top {
    font-size: var(--text-sm);
    color: var(--text-secondary);
    transition: color var(--transition-fast);
}

.footer-top:hover {
    color: var(--accent-cyan);
}

/* Scroll reveal */
.reveal {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.6s cubic-bezier(0.16, 1, 0.3, 1), transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Responsive */
@media (max-width: 1024px) {
    .hero {
        padding-top: calc(var(--space-3xl) + 6rem);
    }

    .hero-grid {
        grid-template-columns: 1fr;
    }

    .hero-3d {
        position: relative;
        top: auto;
        right: auto;
        transform: none;
        margin: 0 auto var(--space-xl);
        width: 260px;
        height: 260px;
        order: -1;
    }

    .hero-glow {
        width: 350px;
        height: 350px;
        right: 50%;
    }

    .hero-stats {
        flex-direction: row;
        padding-top: var(--space-xl);
    }

    .stat-card-offset {
        margin-left: 0;
    }

    .about-grid {
        grid-template-columns: 1fr;
    }

    .about-photo-wrapper {
        max-width: 280px;
        margin: 0 auto var(--space-xl);
    }

    .about-grid {
        grid-template-columns: 1fr;
    }

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

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

@media (max-width: 768px) {
    .hero-title {
        font-size: var(--text-5xl);
    }

    .hero-stats {
        flex-direction: column;
    }

    .stat-card {
        max-width: 100%;
    }

    .expertise-list,
    .services-grid,
    .cases-grid {
        grid-template-columns: 1fr;
    }

    .process-steps {
        flex-direction: column;
    }

    .process-connector {
        width: 100%;
        padding: var(--space-xs) 0;
        transform: rotate(90deg);
    }

    .contact-title {
        font-size: var(--text-3xl);
    }

    .material-item {
        grid-template-columns: 1fr;
        gap: var(--space-xs);
    }

    .material-arrow {
        justify-self: end;
    }

    .section-header {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-sm);
    }

    .faq-question {
        font-size: var(--text-base);
    }

    .footer-inner {
        flex-direction: column;
        align-items: flex-start;
    }
}