:root {
    --bg-deep: #03131a;
    --bg-top: #06202b;
    --bg-panel: rgba(255, 255, 255, 0.04);
    --bg-panel-strong: rgba(255, 255, 255, 0.06);
    --bg-panel-dark: rgba(0, 0, 0, 0.2);
    --border-soft: rgba(103, 232, 249, 0.14);
    --border-header: rgba(8, 145, 178, 0.30);
    --text-main: #ffffff;
    --text-soft: rgba(236, 254, 255, 0.74);
    --text-muted: rgba(207, 250, 254, 0.56);
    --accent-cyan: #67e8f9;
    --accent-amber: #fbbf24;
    --accent-success: #86efac;
    --btn-dark: #0f172a;
    --shadow-lg: 0 20px 40px rgba(0, 0, 0, 0.28);
    --shadow-card: 0 12px 30px rgba(0, 0, 0, 0.18);
    --radius-xl: 2rem;
    --radius-lg: 1.5rem;
    --radius-md: 1rem;
    --container: 1200px;
    --header-height: 88px;
    --transition: 0.25s ease;
    --font-stack: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

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

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    font-family: var(--font-stack);
    background: var(--bg-deep);
    color: var(--text-main);
    line-height: 1.5;
    overflow-x: hidden;
}

body.menu-open {
    overflow: hidden;
}

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

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

button,
input,
textarea {
    font: inherit;
}

.site-bg {
    position: fixed;
    inset: 0;
    z-index: -2;
    background:
        radial-gradient(circle at top, rgba(12, 58, 77, 0.45), transparent 38%),
        linear-gradient(180deg, #06202b 0%, #03131a 45%, #041018 100%);
}

.container {
    width: min(calc(100% - 2rem), var(--container));
    margin: 0 auto;
}

.narrow {
    max-width: 900px;
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    backdrop-filter: blur(16px);
    background: rgba(7, 35, 48, 0.90);
    border-bottom: 1px solid var(--border-header);
}

.header-inner {
    min-height: var(--header-height);
    display: flex;
    align-items: center;
    gap: 1.25rem;
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 0.875rem;
    min-width: 0;
}

.brand-logo,
.footer-logo {
    width: auto;
    height: 40px;
}

.brand-copy,
.footer-brand {
    min-width: 0;
}

.brand-name,
.footer-brand-name {
    font-size: 1.125rem;
    font-weight: 700;
    letter-spacing: 0.01em;
}

.brand-subtitle,
.footer-brand-subtitle {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.24em;
    color: var(--text-muted);
    margin-top: 0.2rem;
}

.site-nav {
    margin-left: auto;
    display: flex;
    align-items: center;
    gap: 1.6rem;
}

.site-nav a,
.footer-nav a {
    color: var(--text-soft);
    transition: color var(--transition);
}

.site-nav a:hover,
.footer-nav a:hover {
    color: var(--text-main);
}

.header-cta {
    margin-left: 0.5rem;
}

.menu-toggle {
    display: none;
    margin-left: auto;
    border: 1px solid rgba(103, 232, 249, 0.25);
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-main);
    width: 50px;
    height: 50px;
    border-radius: 1rem;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: 0.3rem;
    cursor: pointer;
}

.menu-toggle-line {
    width: 20px;
    height: 2px;
    background: var(--text-main);
    border-radius: 999px;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 48px;
    padding: 0.8rem 1.4rem;
    border-radius: 1rem;
    font-size: 0.95rem;
    font-weight: 600;
    transition: transform var(--transition), background-color var(--transition), border-color var(--transition), color var(--transition);
    border: 1px solid transparent;
}

.btn:hover {
    transform: translateY(-2px);
}

.btn-primary {
    background: #ffffff;
    color: #0f172a;
    box-shadow: var(--shadow-card);
}

.btn-primary:hover {
    background: #ecfeff;
}

.btn-secondary {
    border-color: rgba(103, 232, 249, 0.25);
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-main);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.10);
}

.section {
    padding: 6rem 0;
}

.section-alt {
    background: rgba(0, 0, 0, 0.20);
}

.section-subtle {
    background: rgba(255, 255, 255, 0.03);
}

.hero {
    padding-top: 5rem;
    padding-bottom: 6rem;
}

.hero-grid,
.how-grid {
    display: grid;
    grid-template-columns: 0.95fr 1.05fr;
    gap: 3.5rem;
    align-items: center;
}

.hero-copy h1 {
    margin: 1.5rem 0 0;
    font-size: clamp(2.5rem, 5vw, 4.25rem);
    line-height: 1.02;
    letter-spacing: -0.04em;
}

.hero-text {
    max-width: 42rem;
    margin-top: 1.5rem;
    font-size: 1.08rem;
    line-height: 1.9;
    color: var(--text-soft);
}

.hero-actions,
.form-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin-top: 2rem;
}

.eyebrow-pill {
    display: inline-flex;
    align-items: center;
    border: 1px solid rgba(103, 232, 249, 0.20);
    background: rgba(255, 255, 255, 0.05);
    color: rgba(236, 254, 255, 0.70);
    border-radius: 999px;
    padding: 0.7rem 1rem;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.24em;
}

.benefits-grid {
    margin-top: 2rem;
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.9rem;
}

.benefit-item {
    padding: 0.95rem 1rem;
    border-radius: 1rem;
    border: 1px solid var(--border-soft);
    background: var(--bg-panel);
    color: rgba(236, 254, 255, 0.82);
    font-size: 0.92rem;
    box-shadow: var(--shadow-card);
}

.card {
    border: 1px solid var(--border-soft);
    background: var(--bg-panel);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-card);
    backdrop-filter: blur(10px);
}

.card-large {
    padding: 1rem;
}

.card-head {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 1rem;
    margin-bottom: 1rem;
    padding: 0.5rem;
}

.card-head h2 {
    margin: 0.35rem 0 0;
    font-size: 1.35rem;
}

.card-eyebrow,
.section-eyebrow,
.mini-card-label {
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.24em;
    color: var(--text-muted);
}

.status-pill {
    white-space: nowrap;
    display: inline-flex;
    align-items: center;
    padding: 0.5rem 0.9rem;
    border-radius: 999px;
    border: 1px solid rgba(134, 239, 172, 0.18);
    background: rgba(134, 239, 172, 0.10);
    color: #bbf7d0;
    font-size: 0.76rem;
    font-weight: 700;
}

.hero-visual-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1rem;
}

.mini-card {
    overflow: hidden;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-soft);
    background: rgba(2, 6, 23, 0.45);
}

.mini-card-image-wrap {
    aspect-ratio: 4 / 3;
    overflow: hidden;
}

.mini-card-image-wrap img,
.use-case-image img,
.device-image-wrap img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.mini-card-copy,
.device-copy {
    padding: 1rem;
    border-top: 1px solid rgba(103, 232, 249, 0.10);
}

.mini-card-copy p,
.device-copy p,
.feature-card p,
.use-case-copy p,
.section-heading p,
.device-info p,
.footer-copy {
    color: var(--text-soft);
}

.mini-card-label.amber {
    color: rgba(251, 191, 36, 0.78);
}

.mini-card-label.cyan {
    color: rgba(103, 232, 249, 0.75);
}

.section-heading {
    max-width: 44rem;
    margin-bottom: 3rem;
}

.section-heading-left {
    margin-bottom: 2rem;
}

.section-heading-centered {
    margin-left: auto;
    margin-right: auto;
    text-align: center;
}

.section-heading h2 {
    margin: 0.7rem 0 0;
    font-size: clamp(2rem, 4vw, 3rem);
    line-height: 1.08;
    letter-spacing: -0.03em;
}

.section-heading p {
    margin: 1rem 0 0;
    font-size: 1.02rem;
    line-height: 1.8;
}

.three-up,
.four-up,
.device-grid {
    display: grid;
    gap: 1.5rem;
}

.three-up {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.four-up {
    grid-template-columns: repeat(4, minmax(0, 1fr));
}

.feature-card {
    padding: 1.75rem;
}

.feature-card h3,
.device-copy h3,
.device-info h3,
.use-case-copy h3 {
    margin: 1.1rem 0 0;
    font-size: 1.35rem;
}

.icon-badge {
    width: 56px;
    height: 56px;
    border-radius: 1rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(103, 232, 249, 0.20);
    color: #bae6fd;
    font-size: 0.84rem;
    font-weight: 800;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.use-case-stack {
    display: grid;
    gap: 2rem;
}

.use-case-card {
    display: grid;
    grid-template-columns: 0.45fr 0.55fr;
    overflow: hidden;
}

.use-case-copy {
    padding: 2.2rem;
}

.use-case-image {
    min-height: 320px;
    border-left: 1px solid rgba(103, 232, 249, 0.10);
}

.check-list {
    margin: 1.5rem 0 0;
    padding: 0;
    list-style: none;
    display: grid;
    gap: 0.8rem;
}

.check-list li {
    position: relative;
    padding-left: 1.5rem;
    color: rgba(236, 254, 255, 0.80);
}

.check-list li::before {
    content: "";
    position: absolute;
    left: 0;
    top: 0.45rem;
    width: 0.55rem;
    height: 0.55rem;
    border-radius: 999px;
    background: var(--accent-cyan);
    box-shadow: 0 0 0 4px rgba(103, 232, 249, 0.12);
}

.device-info-stack {
    display: grid;
    gap: 1rem;
    margin-top: 2rem;
}

.device-info {
    padding: 1.2rem;
    display: flex;
    align-items: flex-start;
    gap: 1rem;
}

.device-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.device-card {
    overflow: hidden;
}

.device-image-wrap {
    aspect-ratio: 4 / 3;
    background:
        radial-gradient(circle at top, rgba(12, 58, 77, 0.35), transparent 38%),
        linear-gradient(180deg, #071923 0%, #041018 100%);
}

.contact-section {
    background: #072330;
}

.contact-card {
    border: 1px solid rgba(103, 232, 249, 0.15);
    background: rgba(255, 255, 255, 0.04);
    border-radius: var(--radius-xl);
    padding: 2rem;
    box-shadow: var(--shadow-card);
    backdrop-filter: blur(10px);
}

.form-message {
    margin: 0 auto 1.25rem;
    max-width: 48rem;
    border-radius: 1rem;
    padding: 1rem 1.1rem;
    font-size: 0.95rem;
    font-weight: 600;
}

.form-message-success {
    background: rgba(134, 239, 172, 0.12);
    border: 1px solid rgba(134, 239, 172, 0.22);
    color: #dcfce7;
}

.form-message-error {
    background: rgba(248, 113, 113, 0.12);
    border: 1px solid rgba(248, 113, 113, 0.22);
    color: #fee2e2;
}

.contact-form {
    max-width: 850px;
    margin: 2rem auto 0;
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1rem;
}

.field {
    display: flex;
    flex-direction: column;
    gap: 0.55rem;
}

.field-full {
    grid-column: 1 / -1;
}

.field label {
    font-size: 0.9rem;
    font-weight: 600;
    color: rgba(236, 254, 255, 0.84);
}

.field input,
.field textarea {
    width: 100%;
    border-radius: 1rem;
    border: 1px solid rgba(103, 232, 249, 0.15);
    background: rgba(0, 0, 0, 0.20);
    color: var(--text-main);
    padding: 0.9rem 1rem;
    outline: none;
    transition: border-color var(--transition), background-color var(--transition);
}

.field input:focus,
.field textarea:focus {
    border-color: rgba(103, 232, 249, 0.35);
    background: rgba(0, 0, 0, 0.24);
}

.site-footer {
    border-top: 1px solid rgba(103, 232, 249, 0.10);
    background: #04131a;
}

.footer-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 2rem;
    padding: 2rem 0;
    flex-wrap: wrap;
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: 0.875rem;
}

.footer-nav {
    display: flex;
    align-items: center;
    gap: 1.25rem;
    flex-wrap: wrap;
}

.footer-copy {
    font-size: 0.92rem;
    color: rgba(207, 250, 254, 0.45);
}

@media (max-width: 1100px) {
    .hero-grid,
    .how-grid,
    .use-case-card {
        grid-template-columns: 1fr;
    }

    .use-case-image {
        border-left: 0;
        border-top: 1px solid rgba(103, 232, 249, 0.10);
    }

    .three-up,
    .four-up {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 900px) {
    .site-nav,
    .header-cta {
        display: none;
    }

    .menu-toggle {
        display: inline-flex;
    }

    .site-nav.is-open {
        position: absolute;
        top: calc(var(--header-height) + 1px);
        left: 1rem;
        right: 1rem;
        display: flex;
        flex-direction: column;
        gap: 1rem;
        padding: 1.25rem;
        border: 1px solid var(--border-header);
        border-radius: 1.25rem;
        background: #061d27;
        box-shadow: var(--shadow-lg);
    }

    .hero-visual-grid,
    .device-grid,
    .form-grid,
    .benefits-grid,
    .three-up,
    .four-up {
        grid-template-columns: 1fr;
    }

    .section {
        padding: 4.5rem 0;
    }

    .hero {
        padding-top: 3.5rem;
    }
}

@media (max-width: 640px) {
    .brand-name {
        font-size: 1rem;
    }

    .brand-subtitle {
        letter-spacing: 0.16em;
        font-size: 0.68rem;
    }

    .hero-copy h1 {
        font-size: 2.4rem;
    }

    .card-large,
    .feature-card,
    .use-case-copy,
    .contact-card {
        padding: 1.25rem;
    }

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