:root {
    color-scheme: light dark;
    --background: #ffffff;
    --text: #111111;
    --secondary: #7b7b82;
    --border: #e5e5e7;
    --surface: #f6f6f7;
    --accent: #d92d27;
    --accent-hover: #b9201b;
}

* {
    box-sizing: border-box;
}

html {
    font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Helvetica Neue", Arial, sans-serif;
    font-size: 20px;
    line-height: 1.55;
    -webkit-text-size-adjust: 100%;
}

body {
    margin: 0;
    background: var(--background);
    color: var(--text);
}

.page {
    width: min(100% - 48px, 760px);
    margin: 0 auto;
    padding: 48px 0 72px;
}

.app-header {
    display: flex;
    align-items: flex-start;
    gap: 40px;
    margin-bottom: 64px;
}

.app-header picture {
    display: block;
    flex: 0 0 auto;
    line-height: 0;
}

.app-icon {
    width: 160px;
    height: 160px;
    flex: 0 0 auto;
    object-fit: contain;
}

h1,
h2,
h3,
p {
    margin-top: 0;
}

h1 {
    margin-bottom: 2px;
    font-size: clamp(2rem, 7vw, 3rem);
    line-height: 1.08;
    letter-spacing: -0.035em;
}

h2 {
    margin-bottom: 24px;
    font-size: 1.75rem;
    line-height: 1.2;
    letter-spacing: -0.025em;
}

h3 {
    margin: 38px 0 14px;
    font-size: 1.25rem;
    line-height: 1.25;
}

.tagline,
.effective-date,
.fine-print,
footer {
    color: var(--secondary);
}

.tagline {
    margin-bottom: 0;
    font-size: 1.35rem;
    line-height: 1.35;
}

.effective-date {
    margin-top: -14px;
    font-size: 0.9rem;
}

section {
    margin-bottom: 56px;
}

a {
    color: #087df1;
    text-underline-offset: 0.15em;
}

a:hover {
    text-decoration-thickness: 2px;
}

.button {
    display: inline-block;
    margin-top: 8px;
    padding: 12px 18px;
    border-radius: 12px;
    background: var(--accent);
    color: #ffffff;
    font-weight: 650;
    line-height: 1.2;
    text-decoration: none;
}

.button:hover {
    background: var(--accent-hover);
}

.button:focus-visible,
a:focus-visible,
summary:focus-visible {
    outline: 3px solid #087df1;
    outline-offset: 4px;
}

.fine-print {
    font-size: 0.85rem;
}

details {
    padding: 20px 0;
    border-top: 1px solid var(--border);
}

details:last-of-type {
    border-bottom: 1px solid var(--border);
}

summary {
    cursor: pointer;
    font-weight: 650;
}

details p {
    margin: 14px 0 0;
    color: var(--secondary);
}

.link-list {
    margin: 0;
    padding: 0;
    list-style: none;
}

.link-list li + li {
    margin-top: 12px;
}

.back-link {
    margin-bottom: 36px;
    font-size: 0.9rem;
}

footer {
    margin-top: 64px;
    padding-top: 24px;
    border-top: 1px solid var(--border);
    font-size: 0.75rem;
}

footer p {
    margin-bottom: 8px;
}

@media (prefers-color-scheme: dark) {
    :root {
        --background: #101010;
        --text: #f5f5f7;
        --secondary: #a5a5aa;
        --border: #343436;
        --surface: #202022;
        --accent: #ef4942;
        --accent-hover: #ff5b54;
    }

    a {
        color: #48a7ff;
    }
}

@media (max-width: 620px) {
    html {
        font-size: 17px;
    }

    .page {
        width: min(100% - 36px, 760px);
        padding-top: 28px;
    }

    .app-header {
        gap: 20px;
        margin-bottom: 48px;
    }

    .app-icon {
        width: 96px;
        height: 96px;
    }

    h1 {
        font-size: 2rem;
    }

    .tagline {
        font-size: 1.05rem;
    }
}

@media (max-width: 390px) {
    .app-header {
        align-items: flex-start;
        flex-direction: column;
    }
}