:root {
    --ink: #142033;
    --muted: #667386;
    --paper: #fbfcfe;
    --panel: #ffffff;
    --line: #dfe6ef;
    --blue: #1d5fd7;
    --blue-deep: #0d377c;
    --green: #168a4a;
    --amber: #b06a00;
    --shadow: 0 20px 70px rgba(20, 32, 51, 0.14);
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    color: var(--ink);
    background: var(--paper);
    font: 16px/1.55 system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

a {
    color: inherit;
}

.site-header {
    position: absolute;
    inset: 0 0 auto 0;
    z-index: 5;
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    align-items: center;
    gap: 1rem;
    width: min(1180px, calc(100% - 2rem));
    margin: 0 auto;
    padding: 1rem 0;
    color: #ffffff;
}

.brand {
    font-weight: 850;
    text-decoration: none;
}

nav {
    display: flex;
    gap: 1rem;
    justify-content: center;
}

nav a,
.header-download {
    text-decoration: none;
    font-weight: 700;
    font-size: 0.94rem;
}

.header-download {
    justify-self: end;
    border: 1px solid rgba(255, 255, 255, 0.5);
    border-radius: 8px;
    padding: 0.52rem 0.8rem;
}

.hero {
    position: relative;
    min-height: 86svh;
    display: grid;
    align-items: center;
    overflow: hidden;
    color: #ffffff;
    isolation: isolate;
}

.hero-media {
    position: absolute;
    inset: 0;
    z-index: -2;
    background-image: url("assets/download-vault-preview.png");
    background-size: cover;
    background-position: center;
    transform: scale(1.02);
}

.hero-overlay {
    position: absolute;
    inset: 0;
    z-index: -1;
    background: linear-gradient(90deg, rgba(6, 20, 45, 0.92) 0%, rgba(8, 27, 60, 0.78) 38%, rgba(8, 27, 60, 0.2) 100%),
        linear-gradient(0deg, rgba(6, 20, 45, 0.45), rgba(6, 20, 45, 0.05));
}

.hero-content {
    width: min(1180px, calc(100% - 2rem));
    margin: 0 auto;
    padding: 6rem 0 3.5rem;
}

.script-label,
.section-kicker {
    margin: 0 0 0.65rem;
    color: #9fd1ff;
    font-size: 0.78rem;
    font-weight: 850;
    text-transform: uppercase;
    letter-spacing: 0;
}

h1,
h2,
h3,
p {
    overflow-wrap: anywhere;
}

h1 {
    max-width: 720px;
    margin: 0;
    font-size: clamp(3.3rem, 9vw, 7.5rem);
    line-height: 0.95;
}

.hero-copy {
    max-width: 630px;
    margin: 1.15rem 0 0;
    font-size: clamp(1.08rem, 2vw, 1.35rem);
    color: #e7eef9;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.8rem;
    margin-top: 1.6rem;
}

.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 46px;
    border-radius: 8px;
    padding: 0.78rem 1rem;
    text-decoration: none;
    font-weight: 850;
}

.button.primary {
    background: #ffffff;
    color: var(--blue-deep);
    border: 1px solid #ffffff;
}

.button.secondary {
    border: 1px solid rgba(255, 255, 255, 0.55);
    color: #ffffff;
}

.hero-facts {
    display: flex;
    flex-wrap: wrap;
    gap: 0.65rem;
    margin: 1.5rem 0 0;
    padding: 0;
    list-style: none;
}

.hero-facts li {
    border: 1px solid rgba(255, 255, 255, 0.28);
    border-radius: 8px;
    padding: 0.4rem 0.65rem;
    color: #f3f7fc;
    background: rgba(255, 255, 255, 0.08);
}

.intro-band {
    width: min(1180px, calc(100% - 2rem));
    margin: -2.2rem auto 0;
    position: relative;
    z-index: 3;
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1px;
    background: var(--line);
    border: 1px solid var(--line);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: var(--shadow);
}

.intro-band div {
    background: var(--panel);
    padding: 1rem;
}

.intro-band strong,
.intro-band span {
    display: block;
}

.intro-band span {
    margin-top: 0.25rem;
    color: var(--muted);
}

code {
    background: #edf3fb;
    border: 1px solid var(--line);
    border-radius: 6px;
    padding: 0.1rem 0.3rem;
}

.section {
    width: min(1180px, calc(100% - 2rem));
    margin: 0 auto;
    padding: 4.5rem 0 0;
}

.section-head {
    max-width: 760px;
}

.section-head h2,
.download-cta h2 {
    margin: 0;
    font-size: clamp(2rem, 4vw, 3.2rem);
    line-height: 1.05;
}

.section-head .section-kicker,
.download-cta .section-kicker {
    color: var(--blue);
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0.9rem;
    margin-top: 1.6rem;
}

.feature-grid article,
.detail-panel {
    border: 1px solid var(--line);
    background: var(--panel);
    border-radius: 8px;
    padding: 1.1rem;
}

.feature-grid h3,
.detail-panel h2 {
    margin: 0 0 0.45rem;
    font-size: 1.04rem;
}

.feature-grid p,
.detail-panel p {
    margin: 0;
    color: var(--muted);
}

.use-section {
    display: grid;
    grid-template-columns: 0.8fr 1.2fr;
    gap: 2rem;
    align-items: start;
}

.use-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.65rem;
}

.use-list span {
    border: 1px solid var(--line);
    background: #ffffff;
    border-radius: 8px;
    padding: 0.65rem 0.8rem;
    font-weight: 750;
}

.install-section {
    display: grid;
    grid-template-columns: 0.8fr 1.2fr;
    gap: 2rem;
}

.install-steps {
    margin: 0;
    padding: 0;
    list-style: none;
    counter-reset: step;
    display: grid;
    gap: 0.8rem;
}

.install-steps li {
    counter-increment: step;
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 0.2rem 0.8rem;
    border: 1px solid var(--line);
    background: var(--panel);
    border-radius: 8px;
    padding: 1rem;
}

.install-steps li::before {
    content: counter(step);
    grid-row: span 2;
    width: 34px;
    height: 34px;
    border-radius: 8px;
    display: grid;
    place-items: center;
    background: var(--blue);
    color: #ffffff;
    font-weight: 850;
}

.install-steps span {
    color: var(--muted);
}

.details-section {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.9rem;
}

.detail-panel ul {
    margin: 0;
    padding-left: 1.1rem;
    color: var(--muted);
}

.detail-panel li + li {
    margin-top: 0.35rem;
}

.detail-panel.quiet {
    background: #eef5ff;
}

.version {
    display: inline-flex;
    margin-top: 1rem;
    color: var(--blue-deep);
    font-weight: 850;
}

.download-cta {
    width: min(1180px, calc(100% - 2rem));
    margin: 4.5rem auto;
    border-radius: 8px;
    padding: clamp(1.4rem, 5vw, 3rem);
    background: #102449;
    color: #ffffff;
}

.download-cta p {
    max-width: 680px;
    color: #d9e7fb;
}

.download-cta .button.primary {
    margin-top: 0.6rem;
}

.site-footer {
    border-top: 1px solid var(--line);
    padding: 1.25rem;
    display: flex;
    justify-content: center;
    gap: 1rem;
    color: var(--muted);
}

.site-footer a {
    color: var(--blue);
    font-weight: 800;
    text-decoration: none;
}

a:focus-visible {
    outline: 3px solid rgba(29, 95, 215, 0.35);
    outline-offset: 3px;
}

@media (max-width: 880px) {
    .site-header {
        grid-template-columns: 1fr auto;
    }

    nav {
        display: none;
    }

    .hero {
        min-height: 82svh;
    }

    .hero-overlay {
        background: linear-gradient(90deg, rgba(6, 20, 45, 0.94), rgba(8, 27, 60, 0.58));
    }

    .intro-band,
    .feature-grid,
    .use-section,
    .install-section,
    .details-section {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 560px) {
    .site-header {
        width: min(100% - 1rem, 1180px);
    }

    .header-download {
        padding: 0.45rem 0.62rem;
    }

    .hero-content,
    .section,
    .intro-band,
    .download-cta {
        width: min(100% - 1rem, 1180px);
    }

    .hero-actions {
        align-items: stretch;
        flex-direction: column;
    }

    .button {
        width: 100%;
    }

    .site-footer {
        flex-direction: column;
        text-align: center;
    }
}