:root {
    color-scheme: dark;
    --ink: #f7fbff;
    --muted: rgba(232, 244, 255, 0.72);
    --line: rgba(255, 255, 255, 0.16);
    --glass: rgba(7, 17, 31, 0.62);
    --green: #5ff0a4;
    --aqua: #55d7ff;
    --pink: #ff6faf;
    --amber: #ffd166;
    --shadow: 0 30px 80px rgba(1, 8, 18, 0.44);
}

* {
    box-sizing: border-box;
}

html {
    min-height: 100%;
    background: #07111f;
}

body {
    margin: 0;
    min-height: 100vh;
    color: var(--ink);
    font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    background:
        radial-gradient(circle at 22% 18%, rgba(95, 240, 164, 0.34), transparent 28%),
        radial-gradient(circle at 78% 12%, rgba(85, 215, 255, 0.3), transparent 25%),
        radial-gradient(circle at 68% 84%, rgba(255, 111, 175, 0.22), transparent 30%),
        linear-gradient(135deg, #07111f 0%, #0f2439 48%, #102318 100%);
}

body::before {
    position: fixed;
    inset: 0;
    z-index: -1;
    content: "";
    background-image:
        linear-gradient(rgba(255, 255, 255, 0.045) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.045) 1px, transparent 1px);
    background-size: 54px 54px;
    mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.75), transparent 88%);
}

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

.site-shell {
    width: min(1180px, calc(100% - 36px));
    min-height: 100vh;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
}

.topbar {
    position: sticky;
    top: 16px;
    z-index: 10;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    width: 100%;
    margin: 16px 0 28px;
    padding: 12px 14px;
    border: 1px solid var(--line);
    border-radius: 18px;
    background: rgba(7, 17, 31, 0.54);
    box-shadow: 0 18px 50px rgba(0, 0, 0, 0.22);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
}

.brand,
.nav-links,
.hero-actions,
.signal-strip,
.footer-links {
    display: flex;
    align-items: center;
}

.brand {
    gap: 10px;
    font-weight: 800;
    letter-spacing: 0;
}

.brand-logo {
    width: 38px;
    height: 38px;
    border-radius: 11px;
    box-shadow: 0 10px 25px rgba(95, 240, 164, 0.24);
}

.nav-links {
    gap: 8px;
}

.nav-links a,
.secondary-button {
    border: 1px solid var(--line);
    background: rgba(255, 255, 255, 0.08);
}

.nav-links a {
    min-width: 78px;
    padding: 9px 12px;
    border-radius: 999px;
    color: var(--muted);
    font-size: 14px;
    text-align: center;
}

.hero {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(320px, 430px);
    gap: clamp(34px, 6vw, 86px);
    align-items: center;
    padding: clamp(18px, 4vw, 42px) 0 clamp(40px, 7vw, 84px);
}

.hero-copy {
    max-width: 650px;
}

.eyebrow {
    display: inline-flex;
    margin: 0 0 18px;
    padding: 8px 12px;
    border: 1px solid rgba(95, 240, 164, 0.34);
    border-radius: 999px;
    color: #b9ffe0;
    background: rgba(95, 240, 164, 0.11);
    font-size: 13px;
    font-weight: 800;
    text-transform: uppercase;
}

h1 {
    margin: 0;
    max-width: 11ch;
    font-size: clamp(58px, 9vw, 118px);
    line-height: 0.9;
    letter-spacing: 0;
}

.hero-lede {
    max-width: 620px;
    margin: 24px 0 0;
    color: var(--muted);
    font-size: clamp(18px, 2vw, 22px);
    line-height: 1.7;
}

.hero-actions {
    flex-wrap: wrap;
    gap: 14px;
    margin-top: 34px;
}

.primary-button,
.secondary-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 52px;
    border-radius: 999px;
    font-weight: 900;
}

.primary-button {
    gap: 10px;
    padding: 0 22px;
    color: #05121d;
    background: linear-gradient(135deg, var(--green), var(--aqua));
    box-shadow: 0 18px 42px rgba(85, 215, 255, 0.22);
}

.button-icon {
    display: grid;
    place-items: center;
    width: 25px;
    height: 25px;
    border-radius: 50%;
    background: rgba(5, 18, 29, 0.12);
    font-size: 16px;
}

.secondary-button {
    min-width: 120px;
    padding: 0 20px;
    color: var(--ink);
}

.signal-strip {
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 42px;
}

.signal-strip div {
    min-width: 142px;
    padding: 16px;
    border: 1px solid var(--line);
    border-radius: 18px;
    background: rgba(255, 255, 255, 0.075);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
}

.signal-strip strong,
.signal-strip span {
    display: block;
}

.signal-strip strong {
    color: var(--green);
    font-size: 20px;
}

.signal-strip span {
    margin-top: 4px;
    color: var(--muted);
    font-size: 13px;
}

.phone-stage {
    position: relative;
    display: grid;
    place-items: center;
    min-height: 640px;
}

.phone-stage::before {
    position: absolute;
    width: 310px;
    height: 560px;
    content: "";
    border-radius: 50px;
    background: linear-gradient(165deg, rgba(95, 240, 164, 0.32), rgba(85, 215, 255, 0.16));
    filter: blur(28px);
    transform: rotate(-8deg);
}

.orbit {
    position: absolute;
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 999px;
}

.orbit-one {
    width: 410px;
    height: 410px;
    transform: rotate(-18deg);
}

.orbit-two {
    width: 315px;
    height: 315px;
    border-color: rgba(95, 240, 164, 0.26);
    transform: rotate(22deg);
}

.phone-frame {
    position: relative;
    z-index: 2;
    width: min(320px, 76vw);
    aspect-ratio: 750 / 1624;
    padding: 10px;
    border: 1px solid rgba(255, 255, 255, 0.24);
    border-radius: 42px;
    background: linear-gradient(145deg, rgba(255, 255, 255, 0.34), rgba(255, 255, 255, 0.06));
    box-shadow: var(--shadow);
}

.phone-frame img {
    display: block;
    width: 100%;
    height: 100%;
    border-radius: 32px;
    object-fit: cover;
}

.metric-card {
    position: absolute;
    z-index: 3;
    min-width: 145px;
    padding: 14px 16px;
    border: 1px solid var(--line);
    border-radius: 18px;
    background: rgba(7, 17, 31, 0.72);
    box-shadow: 0 18px 50px rgba(0, 0, 0, 0.28);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
}

.metric-card span,
.metric-card strong {
    display: block;
}

.metric-card span {
    color: var(--muted);
    font-size: 12px;
}

.metric-card strong {
    margin-top: 5px;
    font-size: 24px;
}

.metric-heart {
    top: 118px;
    left: 0;
}

.metric-oxygen {
    right: 0;
    bottom: 126px;
}

.feature-band {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 14px;
    margin: 0 0 32px;
}

.feature-band article {
    min-height: 186px;
    padding: 22px;
    border: 1px solid var(--line);
    border-radius: 22px;
    background: rgba(255, 255, 255, 0.075);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
}

.feature-icon {
    display: grid;
    place-items: center;
    width: 42px;
    height: 42px;
    border-radius: 15px;
    color: #07111f;
    background: var(--amber);
    font-weight: 900;
}

.feature-band h2 {
    margin: 18px 0 10px;
    font-size: 20px;
}

.feature-band p {
    margin: 0;
    color: var(--muted);
    line-height: 1.6;
}

.footer-info {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
    margin-top: auto;
    padding: 22px 0 28px;
    color: rgba(232, 244, 255, 0.68);
    font-size: 13px;
}

.footer-links {
    flex-wrap: wrap;
    justify-content: flex-end;
    gap: 14px;
}

.footer-links a:hover,
.nav-links a:hover,
.secondary-button:hover {
    color: var(--ink);
    border-color: rgba(255, 255, 255, 0.32);
    background: rgba(255, 255, 255, 0.12);
}

.primary-button:hover {
    transform: translateY(-1px);
}

@media (max-width: 900px) {
    .hero {
        grid-template-columns: 1fr;
        padding-top: 12px;
    }

    .hero-copy {
        max-width: none;
    }

    h1 {
        max-width: none;
    }

    .phone-stage {
        min-height: 560px;
    }

    .metric-heart {
        left: 8%;
    }

    .metric-oxygen {
        right: 8%;
    }

    .feature-band {
        grid-template-columns: 1fr;
    }

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

    .footer-links {
        justify-content: flex-start;
    }
}

@media (max-width: 560px) {
    .site-shell {
        width: min(100% - 24px, 1180px);
    }

    .topbar {
        position: static;
        align-items: flex-start;
        flex-direction: column;
        border-radius: 16px;
    }

    .nav-links {
        width: 100%;
    }

    .nav-links a {
        flex: 1;
    }

    .hero-actions,
    .hero-actions a,
    .signal-strip,
    .signal-strip div {
        width: 100%;
    }

    .phone-stage {
        min-height: 512px;
        overflow: hidden;
    }

    .orbit-one {
        width: 340px;
        height: 340px;
    }

    .orbit-two {
        width: 260px;
        height: 260px;
    }

    .metric-card {
        min-width: 132px;
        padding: 12px 14px;
    }

    .metric-heart {
        top: 68px;
        left: 0;
    }

    .metric-oxygen {
        right: 0;
        bottom: 78px;
    }
}