:root {
    font-family: var(--font-sans);
    -webkit-text-size-adjust: 100%;
    text-size-adjust: 100%;
    color: var(--color-text);
    background: var(--color-bg);
}

*, *::before, *::after { box-sizing: border-box; }
html { scrollbar-gutter: stable; }
body { margin: 0; min-width: 320px; background: var(--color-bg); color: var(--color-text); font-size: 15px; }
a { -webkit-tap-highlight-color: transparent; }
.shell { width: min(var(--content-wide), 100%); min-height: 100vh; margin: 0 auto; padding: 0 34px 28px; }
.site-header { height: 79px; display: flex; align-items: center; justify-content: space-between; gap: 20px; border-bottom: 1px solid var(--color-border); }
.brand { display: flex; align-items: center; gap: 11px; color: var(--color-text); font-size: 16px; font-weight: 680; letter-spacing: -.02em; text-decoration: none; }
.brand-mark { display: grid; place-items: center; width: 30px; height: 30px; border-radius: var(--radius-sm); color: var(--color-surface); background: var(--color-accent); font-size: 10px; font-weight: 750; box-shadow: var(--shadow-sm); }
.header-actions { display: flex; align-items: center; gap: 14px; }
.service-state { display: inline-flex; align-items: center; gap: 7px; color: var(--color-text-muted); font-size: 13px; white-space: nowrap; }
.service-state i { width: 6px; height: 6px; border-radius: 50%; background: var(--color-success); outline: 3px solid var(--color-success-soft); }
.content { padding: clamp(58px, 10vw, 116px) 0 32px; }
.hero { max-width: 780px; }
.eyebrow { margin: 0 0 13px; color: var(--color-accent); font-size: 12px; font-weight: 750; letter-spacing: .13em; text-transform: uppercase; }
h1 { max-width: 700px; margin: 0; font-size: clamp(40px, 7vw, 72px); font-weight: 590; line-height: .98; letter-spacing: -.06em; }
.lead { max-width: 650px; margin: 24px 0 0; color: var(--color-text-muted); font-size: 16px; line-height: 1.7; }
.actions { display: flex; flex-wrap: wrap; gap: 9px; margin-top: 30px; }
.button { display: inline-flex; align-items: center; justify-content: center; min-height: 40px; padding: 0 17px; border: 1px solid var(--color-border); border-radius: var(--radius-sm); color: var(--color-text); background: var(--color-surface); font-size: 13px; font-weight: 680; text-decoration: none; }
.button:hover { background: var(--color-surface-subtle); border-color: var(--color-border-strong); }
.button.primary { color: var(--color-surface); border-color: var(--color-primary); background: var(--color-primary); }
.button.primary:hover { background: var(--color-primary-hover); }
.button:focus-visible, .brand:focus-visible, .theme-control button:focus-visible { outline: 3px solid var(--color-focus); outline-offset: 2px; }
.feature-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); margin-top: clamp(64px, 10vw, 110px); border: 1px solid var(--color-border); border-radius: var(--radius-md); background: var(--color-surface); overflow: hidden; box-shadow: var(--shadow-sm); }
.feature-grid article { min-width: 0; padding: 22px; border-right: 1px solid var(--color-border); }
.feature-grid article:last-child { border-right: 0; }
.feature-grid span { display: grid; place-items: center; width: 26px; height: 26px; margin-bottom: 22px; border-radius: var(--radius-sm); color: var(--color-accent); background: var(--color-accent-soft); font-size: 8px; font-weight: 750; }
.feature-grid strong { display: block; margin-bottom: 7px; font-size: 15px; }
.feature-grid p { margin: 0; color: var(--color-text-muted); font-size: 13px; line-height: 1.55; }
.note { margin: 18px 2px 0; color: var(--color-text-faint); font-size: 12px; }
footer { display: flex; justify-content: space-between; gap: 20px; padding-top: 18px; border-top: 1px solid var(--color-border); color: var(--color-text-faint); font-size: 11px; }

.theme-control { display: inline-flex; flex: none; padding: 3px; border: 1px solid var(--color-border); border-radius: var(--radius-md); background: var(--color-surface-subtle); }
.theme-control button { min-height: 32px; padding: 4px 10px; cursor: pointer; border: 0; border-radius: var(--radius-sm); color: var(--color-text-muted); background: transparent; font-size: 12px; font-weight: 650; }
.theme-control button:hover { color: var(--color-text); }
.theme-control button[aria-pressed="true"] { color: var(--color-text); background: var(--color-surface); box-shadow: var(--shadow-sm); }

@media (max-width: 700px) {
    .shell { padding-inline: 18px; }
    .site-header { height: 64px; }
    .header-actions { gap: 8px; }
    .service-state { display: none; }
    .theme-control button { min-height: 34px; padding-inline: 8px; font-size: 11px; }
    .content { padding-top: 58px; }
    h1 { font-size: clamp(38px, 14vw, 56px); }
    .feature-grid { grid-template-columns: 1fr; }
    .feature-grid article { border-right: 0; border-bottom: 1px solid var(--color-border); }
    .feature-grid article:last-child { border-bottom: 0; }
    footer { flex-direction: column; gap: 5px; }
}

@media (max-width: 430px) {
    .theme-control button { min-width: 34px; font-size: 0; }
    .theme-control button::after { content: attr(data-short); font-size: 10px; }
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; }
}