:root {
    --bg: #f6f7fb;
    --card: #ffffff;
    --text: #111827;
    --muted: #6b7280;
    --border: #e5e7eb;
    --primary: #111827;
    --alert-bg: #fef2f2;
    --alert-border: #fca5a5;
    --alert-text: #7f1d1d;
}

* { box-sizing: border-box; }

.visually-hidden {
    position: absolute !important;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

html, body {
    height: 100%;
}

body {
    margin: 0;
    font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
    color: var(--text);
    background: var(--bg);
}

.container {
    max-width: 980px;
    margin: 0 auto;
    padding: 48px 16px;
}

.site-header {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 14px;
    padding: 10px 0 22px;
    text-align: center;
    flex-direction: column;
}

.brand-link {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    color: inherit;
    min-width: 0;
    flex-direction: column;
}

.site-logo {
    width: 96px;
    height: 96px;
    object-fit: contain;
    flex: 0 0 auto;
}

.site-name {
    font-weight: 750;
    letter-spacing: 0.01em;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 42ch;
}

.site-nav {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
    justify-content: center;
}

.hero {
    padding: 24px 0 32px;
}

.kicker {
    margin: 0 0 10px;
    font-weight: 650;
    letter-spacing: 0.02em;
    color: var(--muted);
    text-transform: uppercase;
    font-size: 12px;
}

h1 {
    margin: 0 0 12px;
    font-size: 36px;
    line-height: 1.15;
}

.lead {
    margin: 0;
    color: var(--muted);
    font-size: 16px;
    line-height: 1.6;
    max-width: 60ch;
}

.lead + .lead {
    margin-top: 10px;
}

.alert {
    margin-top: 16px;
    padding: 12px 14px;
    border: 1px solid var(--alert-border);
    border-radius: 12px;
    background: var(--alert-bg);
    color: var(--alert-text);
    line-height: 1.6;
}

.alert strong {
    color: var(--alert-text);
}

.apps {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
    margin-top: 8px;
}

.card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 18px;
}

.card-header h2 {
    margin: 0;
    font-size: 20px;
}

.title-row {
    display: flex;
    align-items: center;
    gap: 10px;
}

.app-logo {
    width: 48px;
    height: 48px;
    object-fit: contain;
    border-radius: 8px;
    border: 1px solid var(--border);
    background: #ffffff;
}

.tagline {
    margin: 6px 0 0;
    color: var(--muted);
    line-height: 1.5;
}

.card-actions {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    margin-top: 14px;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 10px 12px;
    border-radius: 10px;
    border: 1px solid var(--border);
    text-decoration: none;
    font-weight: 600;
    font-size: 14px;
    transition: background 120ms ease, border-color 120ms ease;
}

.btn-primary {
    background: var(--primary);
    border-color: var(--primary);
    color: #ffffff;
}

.btn-primary:hover {
    background: #0b1220;
    border-color: #0b1220;
}

.btn-secondary {
    background: #ffffff;
    color: var(--text);
}

.btn-secondary:hover {
    background: #f9fafb;
}

.hint {
    margin: 12px 0 0;
    font-size: 12px;
    color: var(--muted);
}

.card-section {
    margin-top: 14px;
    padding-top: 12px;
    border-top: 1px solid var(--border);
}

.section-title {
    margin: 0 0 8px;
    font-size: 13px;
    letter-spacing: 0.01em;
    color: var(--text);
}

.list {
    margin: 0;
    padding-left: 18px;
    color: var(--muted);
    line-height: 1.6;
    font-size: 13px;
}

.list li {
    margin: 6px 0;
}

.figure {
    margin: 0 0 14px;
}

.figure-img {
    display: block;
    width: 100%;
    height: auto;
    border: 1px solid var(--border);
    border-radius: 12px;
    background: var(--card);
}

.figure-cap {
    margin-top: 8px;
    color: var(--muted);
    font-size: 12px;
    line-height: 1.5;
}

.code {
    margin-top: 10px;
    padding: 10px 12px;
    border: 1px solid var(--border);
    border-radius: 12px;
    background: var(--card);
    font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
    font-size: 12px;
    line-height: 1.6;
    color: var(--text);
}

.link {
    color: inherit;
    text-decoration: underline;
    text-underline-offset: 2px;
}

.link:hover {
    color: var(--text);
}

.example {
    margin: 12px 0 0;
    padding: 10px 12px;
    border-radius: 12px;
    border: 1px solid var(--border);
    background: var(--card);
    color: var(--muted);
    line-height: 1.6;
    font-size: 13px;
}

.example-note {
    display: inline-block;
    margin-left: 6px;
}

.compare-block {
    margin-top: 12px;
    padding: 12px;
    border: 1px solid var(--border);
    border-radius: 12px;
    background: var(--card);
}

.hero .compare-block {
    margin-top: 16px;
}

.compare-block h2 {
    margin: 0 0 6px;
    font-size: 16px;
}

.mono {
    font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
}

.footer {
    margin-top: 28px;
    color: var(--muted);
}

@media (max-width: 760px) {
    .container {
        padding: 28px 14px;
    }

    .site-header {
        padding-bottom: 16px;
    }

    .site-logo {
        width: 82px;
        height: 82px;
    }

    h1 {
        font-size: 28px;
    }

    .apps {
        grid-template-columns: 1fr;
    }
}