:root {
    --bg-color: #000000;
    --text-primary: #f5f5f7;
    --text-secondary: #86868b;
    --accent: #ffffff;
    --border-color: rgba(255, 255, 255, 0.1);
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-primary);
    line-height: 1.47059;
    letter-spacing: -0.022em;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

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

.text-muted {
    color: var(--text-secondary);
}

.mb-huge {
    margin-bottom: 5rem;
}

.mt-small {
    margin-top: 1rem;
}

.content-container {
    max-width: 980px;
    margin: 0 auto;
    padding: 0 22px;
}

.section-spacing {
    padding: 120px 0;
}

.section-divider {
    height: 1px;
    background-color: var(--border-color);
    max-width: 980px;
    margin: 0 auto;
    width: calc(100% - 44px);
}

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 100;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: saturate(180%) blur(20px);
    -webkit-backdrop-filter: saturate(180%) blur(20px);
    transition: all 0.3s ease;
}

.nav-content {
    max-width: 980px;
    margin: 0 auto;
    padding: 0 22px;
    height: 48px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo-container {
    display: flex;
    align-items: center;
    gap: 8px;
}

.app-icon {
    width: 24px;
    height: 24px;
    object-fit: contain;
}

.logo-text {
    font-size: 17px;
    font-weight: 600;
    letter-spacing: -0.01em;
}

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 12px;
    font-weight: 400;
    letter-spacing: -.01em;
    transition: color 0.3s;
}

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

.hero {
    padding-top: 100px;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.hero-title {
    font-size: clamp(48px, 8vw, 80px);
    font-weight: 600;
    letter-spacing: -0.015em;
    line-height: 1.05;
    margin-bottom: 24px;
}

.hero-subtitle {
    font-size: clamp(21px, 4vw, 28px);
    color: var(--text-secondary);
    max-width: 700px;
    margin: 0 auto 30px;
    line-height: 1.381;
    font-weight: 400;
    letter-spacing: .011em;
}

.video-showcase {
    position: relative;
    width: 100%;
    max-width: 980px;
    margin: 0 auto 60px auto;
    border-radius: 16px;
    background: transparent;
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5), 0 0 0 1px rgba(255, 255, 255, 0.1);
}

.frameless-video {
    width: 100%;
    height: auto;
    display: block;
    object-fit: contain;
}

.hero-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
    align-items: center;
    margin-top: 40px;
}

.secondary-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: transparent;
    color: var(--text-primary);
    padding: 18px 32px;
    border-radius: 980px;
    box-shadow: inset 0 0 0 1px var(--border-color);
    font-size: 17px;
    font-weight: 600;
    text-decoration: none;
    transition: background 0.2s, color 0.2s;
}

.secondary-btn:hover {
    background: rgba(255, 255, 255, 0.05);
}

.primary-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.section-title {
    font-size: clamp(40px, 6vw, 64px);
    font-weight: 600;
    letter-spacing: -0.015em;
    line-height: 1.05;
    margin-bottom: 24px;
}

.section-description {
    font-size: 24px;
    color: var(--text-secondary);
    line-height: 1.381;
    font-weight: 400;
    letter-spacing: .011em;
}

.split-layout {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 60px;
}

.split-layout.align-start {
    align-items: flex-start;
}

.split-left,
.split-right {
    flex: 1;
}

.feature-rows {
    display: flex;
    flex-direction: column;
    max-width: 800px;
    margin: 0 auto;
}

.feature-row {
    display: flex;
    align-items: flex-start;
    gap: 40px;
    padding: 20px 0;
}

.feature-icon-large {
    flex-shrink: 0;
    width: 64px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-primary);
}

.feature-icon-large svg {
    width: 40px;
    height: 40px;
    stroke-width: 1.5;
}

.feature-content h3 {
    font-size: 32px;
    font-weight: 600;
    letter-spacing: -0.01em;
    margin-bottom: 12px;
    line-height: 1.2;
}

.feature-content p {
    font-size: 21px;
    color: var(--text-secondary);
    line-height: 1.4;
    font-weight: 400;
}

.feature-divider {
    height: 1px;
    background-color: var(--border-color);
    margin: 20px 0 20px 104px;
}

.clean-steps {
    display: flex;
    flex-direction: column;
}

.step {
    display: flex;
    align-items: center;
    gap: 24px;
}

.step-num {
    font-size: 64px;
    font-weight: 600;
    color: var(--text-primary);
    line-height: 1;
}

.step-text {
    font-size: 24px;
    color: var(--text-secondary);
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: color 0.3s;
}

.step.install-step {
    cursor: default;
    position: relative;
    align-items: flex-start;
}

.step-content {
    display: flex;
    flex-direction: column;
}

.info-icon {
    width: 18px;
    height: 18px;
    opacity: 0.5;
    transition: opacity 0.3s;
}

.install-step:hover .step-text,
.install-step:hover .info-icon {
    color: var(--text-primary);
    opacity: 1;
}

.install-details {
    margin-top: 12px;
    font-size: 15px;
    color: var(--text-secondary);
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 16px;
    max-width: 400px;
    opacity: 0;
    max-height: 0;
    overflow: hidden;
    transform: translateY(-10px);
    transition: all 0.3s ease;
}

.install-step:hover .install-details {
    opacity: 1;
    max-height: 250px;
    margin-top: 16px;
    transform: translateY(0);
}

.install-details p {
    margin-bottom: 8px;
    line-height: 1.4;
}

.code-block {
    background: #000;
    border: 1px solid rgba(255, 255, 255, 0.1);
    padding: 10px 12px;
    border-radius: 6px;
    margin-top: 12px;
    font-family: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, Courier, monospace;
    font-size: 13px;
    color: var(--text-primary);
    overflow-x: auto;
    white-space: nowrap;
}

.step-divider {
    height: 40px;
    width: 2px;
    background: var(--border-color);
    margin: 16px 0 16px 24px;
}

.cta-title {
    font-size: clamp(40px, 6vw, 56px);
    font-weight: 600;
    letter-spacing: -0.015em;
    margin-bottom: 20px;
}

.cta-desc {
    font-size: 24px;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto 40px;
}

.primary-btn {
    display: inline-block;
    background: var(--text-primary);
    color: var(--bg-color);
    padding: 18px 32px;
    border-radius: 980px;
    font-size: 17px;
    font-weight: 600;
    text-decoration: none;
    transition: transform 0.2s, opacity 0.2s;
}

.primary-btn:hover {
    transform: scale(1.02);
    opacity: 0.9;
}

.site-footer {
    padding: 80px 0 40px;
    border-top: 1px solid var(--border-color);
    background: var(--bg-color);
}

.footer-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    margin-bottom: 60px;
}

.footer-brand {
    display: flex;
    flex-direction: column;
    gap: 16px;
    align-items: flex-start;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 600;
    font-size: 20px;
    color: var(--text-primary);
    letter-spacing: -0.01em;
}

.footer-icon {
    width: 28px;
    height: 28px;
    object-fit: contain;
}

.footer-tagline {
    color: var(--text-secondary);
    font-size: 15px;
    line-height: 1.5;
    max-width: 280px;
}

.footer-nav {
    display: flex;
    gap: 80px;
    justify-content: flex-end;
}

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

.footer-column h4 {
    color: var(--text-primary);
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 4px;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.footer-column a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 15px;
    transition: color 0.2s;
}

.footer-column a:hover {
    color: var(--text-primary);
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    padding-top: 32px;
}

.footer-copy {
    font-size: 14px;
    color: var(--text-secondary);
}

.fade-in-up {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 1s cubic-bezier(0.16, 1, 0.3, 1), transform 1s cubic-bezier(0.16, 1, 0.3, 1);
}

.fade-in-up.visible {
    opacity: 1;
    transform: translateY(0);
}

.delay-1 {
    transition-delay: 0.1s;
}

.delay-2 {
    transition-delay: 0.2s;
}

@media (max-width: 834px) {
    .split-layout {
        flex-direction: column;
        gap: 30px;
    }

    .feature-row {
        flex-direction: column;
        gap: 20px;
    }

    .feature-divider {
        margin: 20px 0;
    }

    .section-spacing {
        padding: 80px 0;
    }

    .hero {
        padding-top: 80px;
    }

    .hero-title {
        font-size: clamp(36px, 10vw, 48px);
        padding: 0 16px;
        margin-bottom: 16px;
    }

    .hero-subtitle {
        font-size: clamp(18px, 6vw, 21px);
        padding: 0 16px;
    }

    .hero-actions {
        flex-direction: column;
        padding: 0 16px;
    }

    .hero-actions .primary-btn,
    .hero-actions .secondary-btn {
        width: 100%;
        justify-content: center;
    }

    .video-showcase {
        margin: 0 16px 40px 16px;
        width: calc(100% - 32px);
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 40px;
        text-align: center;
    }

    .footer-brand {
        align-items: center;
    }

    .footer-tagline {
        margin: 0 auto;
    }

    .footer-nav {
        justify-content: center;
        gap: 60px;
        flex-wrap: wrap;
    }

    .footer-bottom {
        flex-direction: column;
        gap: 16px;
        align-items: center;
    }
}