* {
    box-sizing: border-box
}

html {
    scroll-behavior: smooth;
    overflow-x: hidden
}

body {
    margin: 0;
    width: 100%;
    min-width: 0;
    overflow-x: hidden;
    font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    background: #06131f;
    color: #f5f8fa;
    line-height: 1.6
}

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

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

.container {
    width: 100%;
    max-width: 1120px;
    margin: auto;
    padding: 0 20px
}

.site-header {
    position: fixed;
    inset: 0 0 auto;
    z-index: 100;
    background: rgba(6, 19, 31, .86);
    backdrop-filter: blur(18px);
    border-bottom: 1px solid rgba(170, 205, 225, .08)
}

.nav {
    height: 70px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 18px
}

.brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 18px;
    font-weight: 750;
    white-space: nowrap
}

.brand-icon {
    width: 34px;
    height: 34px;
    flex: 0 0 34px;
    display: grid;
    place-items: center;
    border-radius: 9px;
    background: #001122;
    border: 1px solid rgba(255, 255, 255, .12);
    font-weight: 800
}

.nav-links {
    display: flex;
    gap: 26px;
    color: #a0adb7;
    font-size: 14px
}

.nav-links a:hover,
.back-link:hover {
    color: #fff
}

.back-link {
    color: #a0adb7;
    font-size: 14px;
    white-space: nowrap
}

section {
    padding: 86px 0
}

.hero {
    min-height: 100svh;
    display: flex;
    align-items: center;
    padding: 115px 0 70px;
    text-align: center
}

.hero-content {
    max-width: 850px;
    margin: auto
}

.eyebrow,
.section-label {
    color: #77a0b8;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: .12em;
    text-transform: uppercase
}

.eyebrow {
    display: inline-flex;
    gap: 8px;
    align-items: center;
    padding: 7px 13px;
    border: 1px solid rgba(170, 205, 225, .12);
    border-radius: 999px;
    background: rgba(0, 17, 34, .55);
    margin-bottom: 22px
}

.eyebrow-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: #65a7cc
}

.hero h1 {
    font-size: clamp(4rem, 10vw, 7.5rem);
    line-height: .9;
    letter-spacing: -.075em;
    margin: 0
}

.hero h1 span {
    color: #6a8598
}

.hero-text {
    max-width: 600px;
    margin: 24px auto;
    color: #a0adb7;
    font-size: 18px
}

.download-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-top: 28px;
    min-height: 50px;
    padding: 0 24px;
    border-radius: 12px;
    background: #001122;
    border: 1px solid rgba(105, 170, 210, .3);
    color: #fff;
    font-size: 14px;
    font-weight: 700;
    transition: .2s
}

.download-button:hover {
    transform: translateY(-2px);
    background: #0a2940
}

.hero-phone {
    width: min(280px, 72vw);
    margin: 45px auto 0;
    padding: 8px;
    border-radius: 34px;
    background: #11202b;
    border: 1px solid rgba(170, 205, 225, .12);
    box-shadow: 0 35px 80px rgba(0, 0, 0, .4)
}

.hero-phone img {
    border-radius: 27px
}

.alt-section {
    background: #081825
}

.section-label {
    margin-bottom: 10px
}

.section-title {
    max-width: 700px;
    margin: 0;
    font-size: clamp(2.2rem, 5vw, 3.6rem);
    line-height: 1.05;
    letter-spacing: -.05em
}

.section-text {
    max-width: 650px;
    margin: 14px 0;
    color: #a0adb7;
    font-size: 16px
}

.screenshots-grid {
    margin-top: 40px;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 18px
}

.screen-card {
    padding: 7px;
    border-radius: 27px;
    background: #10212d;
    border: 1px solid rgba(170, 205, 225, .12)
}

.screen-card img {
    border-radius: 20px;
    width: 100%
}

.screen-name {
    text-align: center;
    margin: 11px 0 0;
    color: #9eabb5;
    font-size: 13px
}

.features-grid {
    margin-top: 40px;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 13px
}

.feature {
    padding: 23px;
    background: #0b1b28;
    border: 1px solid rgba(170, 205, 225, .12);
    border-radius: 20px
}

.feature-icon {
    width: 40px;
    height: 40px;
    display: grid;
    place-items: center;
    margin-bottom: 17px;
    border-radius: 10px;
    background: #001122;
    color: #dce9f2
}

.feature h3 {
    font-size: 17px;
    margin: 0 0 6px
}

.feature p {
    color: #a0adb7;
    font-size: 14px;
    margin: 0
}

.privacy-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: center
}

.privacy-points {
    margin-top: 23px;
    display: grid;
    gap: 10px
}

.privacy-point {
    display: flex;
    align-items: center;
    gap: 12px;
    color: #cbd5dc;
    font-size: 14px
}

.check {
    width: 22px;
    height: 22px;
    display: grid;
    place-items: center;
    flex: 0 0 22px;
    border-radius: 50%;
    background: #001122;
    color: #a6cde4;
    font-size: 12px
}

.privacy-card {
    min-height: 280px;
    display: grid;
    place-items: center;
    padding: 35px;
    text-align: center;
    border-radius: 26px;
    background: radial-gradient(circle, #0b3049, #081722 70%);
    border: 1px solid rgba(95, 160, 200, .14)
}

.privacy-symbol {
    font-size: 50px
}

.privacy-card h3 {
    font-size: 21px;
    margin: 12px 0 0
}

.privacy-card p {
    margin: 7px 0;
    color: #a0adb7;
    font-size: 14px
}

.about {
    max-width: 760px
}

.about p {
    color: #a0adb7;
    font-size: 16px;
    margin: 15px 0 0
}

footer {
    border-top: 1px solid rgba(170, 205, 225, .12);
    padding: 25px 0
}

.footer-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 18px
}

.copyright {
    color: #71808b;
    font-size: 13px
}

.footer-links {
    display: flex;
    gap: 20px;
    color: #87949e;
    font-size: 13px;
    flex-wrap: wrap
}

@media(max-width:850px) {
    .nav-links {
        display: none
    }

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

    .screenshots-grid>div:last-child {
        grid-column: 1/-1;
        width: min(50%, 310px);
        margin: auto
    }

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

    .privacy-content {
        grid-template-columns: 1fr;
        gap: 30px
    }
}

@media(max-width:600px) {
    .container {
        padding: 0 14px
    }

    section {
        padding: 65px 0
    }

    .hero {
        padding-top: 105px;
        padding-bottom: 60px
    }

    .hero h1 {
        font-size: clamp(3.5rem, 18vw, 4.8rem)
    }

    .hero-text {
        font-size: 16px
    }

    .screenshots-grid,
    .features-grid {
        grid-template-columns: 1fr;
        max-width: 310px;
        margin-left: auto;
        margin-right: auto
    }

    .screenshots-grid>div:last-child {
        grid-column: auto;
        width: auto
    }

    .features-grid {
        max-width: none
    }

    .privacy-card {
        min-height: 240px
    }

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

@media(max-width:380px) {
    .nav {
        height: 64px
    }

    .brand {
        font-size: 16px
    }

    .brand-icon {
        width: 30px;
        height: 30px;
        flex-basis: 30px
    }

    .back-link {
        font-size: 12px
    }
}