:root,
[data-theme="light"] {
    color-scheme: light;
    --bg: #f8f9fa;
    --surface: #ffffff;
    --text: #202124;
    --text-muted: #5f6368;
    --border: #dfe1e5;
    --accent: #1a73e8;
    --accent-hover: #1557b0;
    --accent-soft: #e8f0fe;
    --shadow: 0 1px 6px rgba(32, 33, 36, 0.12);
    --shadow-lg: 0 4px 24px rgba(32, 33, 36, 0.14);
    --img-bg: #e8eaed;
    --url: #006621;
    --badge-bg: #e6f4ea;
    --badge-text: #137333;
    --font: "Google Sans", "Segoe UI", Roboto, Arial, sans-serif;
}

[data-theme="dark"] {
    color-scheme: dark;
    --bg: #121212;
    --surface: #1e1e1e;
    --text: #e8eaed;
    --text-muted: #9aa0a6;
    --border: #3c4043;
    --accent: #8ab4f8;
    --accent-hover: #aecbfa;
    --accent-soft: #394457;
    --shadow: 0 1px 6px rgba(0, 0, 0, 0.45);
    --shadow-lg: 0 4px 24px rgba(0, 0, 0, 0.55);
    --img-bg: #2d2d2d;
    --url: #81c995;
    --badge-bg: #1e3a2f;
    --badge-text: #81c995;
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

html {
    font-size: 16px;
}

body {
    margin: 0;
    font-family: var(--font);
    background: var(--bg);
    color: var(--text);
    min-height: 100vh;
}

a {
    color: inherit;
    text-decoration: none;
}

img {
    max-width: 100%;
    display: block;
}

/* Header */
.site-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: 0.75rem 1.5rem;
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 100;
}

.site-header--landing {
    background: var(--bg);
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.35rem;
    font-weight: 600;
    letter-spacing: -0.02em;
    color: var(--text);
    flex-shrink: 0;
}

.logo-icon {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: linear-gradient(135deg, #4285f4, #34a853, #fbbc05, #ea4335);
    display: grid;
    place-items: center;
    color: white;
    font-size: 0.85rem;
    font-weight: 700;
}

.header-actions {
    display: flex;
    gap: 0.5rem;
    flex-shrink: 0;
}

.theme-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    padding: 0;
    border: 1px solid var(--border);
    border-radius: 50%;
    background: var(--surface);
    color: var(--text-muted);
    cursor: pointer;
    flex-shrink: 0;
    transition: background 0.2s, color 0.2s, border-color 0.2s;
}

.theme-toggle:hover {
    background: var(--accent-soft);
    color: var(--accent);
    border-color: var(--accent);
}

.theme-toggle:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

.theme-toggle__icon {
    display: block;
}

.theme-toggle__icon--sun {
    display: none;
}

[data-theme="dark"] .theme-toggle__icon--moon {
    display: none;
}

[data-theme="dark"] .theme-toggle__icon--sun {
    display: block;
}

/* Footer */
.site-footer {
    text-align: center;
    padding: 2rem;
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* Payment Guardian */
.guardian-page {
    max-width: 960px;
    margin: 0 auto;
    padding: 2rem 1.5rem 3rem;
}

.guardian-hero {
    text-align: center;
    padding: 2.5rem 1rem 2rem;
}

.guardian-hero-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: var(--accent-soft);
    color: var(--accent);
    margin-bottom: 1.25rem;
}

.guardian-hero h1 {
    margin: 0 0 0.75rem;
    font-size: 2.5rem;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.guardian-tagline {
    color: var(--text-muted);
    font-size: 1.1rem;
    max-width: 560px;
    margin: 0 auto;
    line-height: 1.6;
}

.guardian-section {
    margin-top: 1rem;
}

.guardian-section-header {
    margin-bottom: 1.5rem;
    text-align: center;
}

.guardian-section-header h2 {
    margin: 0 0 0.35rem;
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text);
}

.guardian-section-header p {
    margin: 0;
    font-size: 0.95rem;
    color: var(--text-muted);
}

.guardian-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 1.25rem;
}

.guardian-card {
    background: var(--surface);
    border-radius: 16px;
    overflow: hidden;
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
    transition: transform 0.2s, box-shadow 0.2s;
    display: flex;
    flex-direction: column;
}

.guardian-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.guardian-card-visual {
    aspect-ratio: 16 / 10;
    background: var(--img-bg);
    overflow: hidden;
}

.guardian-card-visual img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: top center;
}

.guardian-card-body {
    padding: 1rem 1.1rem 1.15rem;
    border-top: 1px solid var(--border);
    flex: 1;
    display: flex;
    flex-direction: column;
}

.guardian-card-body h3 {
    margin: 0 0 0.2rem;
    font-size: 1.1rem;
    font-weight: 600;
}

.guardian-domain {
    display: block;
    font-size: 0.82rem;
    color: var(--url);
    margin-bottom: 0.5rem;
}

.guardian-card-desc {
    margin: 0 0 0.75rem;
    font-size: 0.88rem;
    color: var(--text-muted);
    line-height: 1.45;
    flex: 1;
}

.guardian-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    font-size: 0.78rem;
    font-weight: 500;
    color: var(--badge-text);
    background: var(--badge-bg);
    padding: 0.3rem 0.6rem;
    border-radius: 999px;
    width: fit-content;
    margin-bottom: 0.5rem;
}

.guardian-visit {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--accent);
}

.guardian-card:hover .guardian-visit {
    text-decoration: underline;
}

.guardian-cta {
    margin-top: 3rem;
    padding: 2rem;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 16px;
    text-align: center;
    box-shadow: var(--shadow);
}

.guardian-cta h2 {
    margin: 0 0 1rem;
    font-size: 1.15rem;
    font-weight: 600;
}

.guardian-features {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.75rem 1.5rem;
}

.guardian-features li {
    font-size: 0.95rem;
    color: var(--text-muted);
}

.guardian-features li::before {
    content: "✓ ";
    color: var(--badge-text);
    font-weight: 700;
}

@media (max-width: 600px) {
    .guardian-hero h1 {
        font-size: 2rem;
    }

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

    .guardian-features {
        flex-direction: column;
        align-items: center;
    }
}