:root {
    --ps-bg: #f4f7fb;
    --ps-panel: #ffffff;
    --ps-ink: #172233;
    --ps-ink-muted: #5d6a80;
    --ps-primary: #2160cd;
    --ps-primary-ink: #ffffff;
    --ps-border: #d7e1ee;
    --ps-shadow: 0 16px 44px rgba(18, 31, 64, 0.12);
}

* {
    box-sizing: border-box;
}

body.ps-body {
    margin: 0;
    font-family: "Manrope", "Avenir Next", "Segoe UI", sans-serif;
    color: var(--ps-ink);
    background:
        radial-gradient(1100px 500px at 5% -10%, rgba(63, 133, 255, 0.2), transparent 60%),
        radial-gradient(900px 500px at 95% -15%, rgba(28, 95, 209, 0.18), transparent 65%),
        var(--ps-bg);
}

.ps-shell {
    width: min(1120px, calc(100% - 40px));
    margin: 0 auto;
}

.ps-header {
    position: sticky;
    top: 0;
    z-index: 20;
    backdrop-filter: blur(6px);
    background: rgba(244, 247, 251, 0.84);
    border-bottom: 1px solid var(--ps-border);
}

.ps-header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    min-height: 76px;
}

.ps-brand {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    color: var(--ps-ink);
    text-decoration: none;
    font-weight: 800;
    font-size: 20px;
}

.ps-brand-mark {
    width: 14px;
    height: 14px;
    border-radius: 999px;
    background: linear-gradient(140deg, #205ecb 0%, #66b5ff 100%);
    box-shadow: 0 0 0 5px rgba(33, 96, 205, 0.16);
}

.ps-nav {
    display: inline-flex;
    align-items: center;
    gap: 16px;
}

.ps-nav a {
    text-decoration: none;
    color: var(--ps-ink-muted);
    font-weight: 600;
    font-size: 14px;
}

.ps-nav a:hover {
    color: var(--ps-ink);
}

.ps-nav .ps-nav-cta {
    border: 1px solid var(--ps-primary);
    border-radius: 999px;
    color: var(--ps-primary);
    padding: 8px 12px;
}

.ps-nav .ps-nav-cta:hover {
    color: var(--ps-primary-ink);
    background: var(--ps-primary);
}

.ps-hero {
    padding: 54px 0 34px;
}

.ps-hero-card {
    background: linear-gradient(140deg, #2864ce 0%, #6488ee 58%, #77bcff 100%);
    color: #f7fbff;
    border-radius: 24px;
    padding: 30px;
    box-shadow: var(--ps-shadow);
}

.ps-hero-card h1 {
    margin: 0 0 14px;
    font-size: clamp(30px, 4vw, 46px);
    line-height: 1.07;
}

.ps-hero-card p {
    margin: 0;
    max-width: 720px;
    font-size: clamp(16px, 1.8vw, 22px);
    line-height: 1.4;
}

.ps-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
    margin: 20px 0 10px;
}

.ps-card {
    background: var(--ps-panel);
    border: 1px solid var(--ps-border);
    border-radius: 16px;
    padding: 18px;
    box-shadow: 0 8px 24px rgba(21, 39, 77, 0.06);
}

.ps-card h2,
.ps-card h3 {
    margin: 0 0 10px;
    font-size: 18px;
}

.ps-card p,
.ps-card li {
    color: var(--ps-ink-muted);
    line-height: 1.45;
}

.ps-list {
    margin: 0;
    padding-left: 20px;
    display: grid;
    gap: 8px;
}

.ps-code-wrap {
    margin-top: 10px;
    background: #0f1b31;
    border-radius: 12px;
    border: 1px solid #21365f;
    overflow: auto;
}

.ps-code-wrap pre {
    margin: 0;
    padding: 14px 16px;
    color: #cce6ff;
    font-size: 13px;
    line-height: 1.4;
}

.ps-note {
    margin: 8px 0 0;
    font-size: 13px;
    color: #7a879a;
}

.ps-legal {
    padding: 24px 0 34px;
}

.ps-legal-card {
    background: var(--ps-panel);
    border: 1px solid var(--ps-border);
    border-radius: 18px;
    box-shadow: 0 10px 30px rgba(19, 33, 66, 0.07);
    padding: 20px 22px;
}

.ps-legal-card h1 {
    margin: 0 0 18px;
    font-size: clamp(28px, 3.5vw, 40px);
}

.ps-legal-card h2 {
    margin: 18px 0 8px;
    font-size: 18px;
}

.ps-legal-card p {
    margin: 0 0 8px;
    color: var(--ps-ink-muted);
    line-height: 1.5;
}

.ps-legal-block {
    border-top: 1px solid var(--ps-border);
    padding-top: 14px;
    margin-top: 14px;
}

.ps-footer {
    border-top: 1px solid var(--ps-border);
    background: #eef3fa;
}

.ps-footer-inner {
    min-height: 74px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}

.ps-footer p {
    margin: 0;
    color: #617087;
}

.ps-footer a {
    color: #255fc7;
    text-decoration: none;
}

.ps-footer a:hover {
    text-decoration: underline;
}

.ps-footer-links {
    display: inline-flex;
    gap: 14px;
}

@media (max-width: 900px) {
    .ps-grid {
        grid-template-columns: 1fr;
    }

    .ps-nav {
        flex-wrap: wrap;
        justify-content: flex-end;
        gap: 10px;
    }
}

@media (max-width: 640px) {
    .ps-shell {
        width: calc(100% - 24px);
    }

    .ps-header-inner {
        align-items: flex-start;
        flex-direction: column;
        padding: 12px 0;
        min-height: auto;
    }

    .ps-hero {
        padding-top: 24px;
    }

    .ps-hero-card {
        padding: 20px;
        border-radius: 18px;
    }

    .ps-footer-inner {
        flex-direction: column;
        justify-content: center;
        padding: 14px 0;
    }

    .ps-footer-links {
        flex-wrap: wrap;
        justify-content: center;
    }
}