:root {
    --font-family-sans: 'Montserrat', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;

    --color-white: #ffffff;

    --color-gray: #E1E1E1;
    --color-gray-dark: #929292;
    --color-gray-darker: #4A4A4A;
    --color-gray-light: #C5C5C5;

    --color-red: #DC2F33;
    --color-red-dark: #b71f22;

    --color-primary: var(--color-red);
    --color-primary-dark: var(--color-red-dark);
    --color-primary-shadow-10: rgba(220, 47, 51, 0.1);
    --color-primary-shadow-20: rgba(220, 47, 51, 0.2);

    --color-text: var(--color-gray-darker);
    --color-text-secondary: var(--color-gray-dark);
    --color-border: var(--color-gray);
    --color-bg-light: #f5f5f5;
    --color-bg-lighter: #f0f0f0;

    --font-base: 1rem;
    --font-sm: 0.95rem;
    --font-lg: 1.8rem;

    --font-weight-light: 300;
    --font-weight-normal: 400;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;

    --spacing-section: 20px 30px;

    --btn-radius: 8px;
    --transition-base: 0.3s ease;

    --shadow-card: 0 10px 30px rgba(0, 0, 0, 0.08);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    height: 100%;
}

body {
    font-family: var(--font-family-sans);
    font-size: var(--font-base);
    font-weight: var(--font-weight-normal);
    background: var(--color-bg-lighter);
    color: var(--color-text);
    min-height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
}

.container {
    width: 100%;
    max-width: 520px;
    background: var(--color-white);
    border-radius: 12px;
    box-shadow: var(--shadow-card);
    overflow: hidden;
}

.brand {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px 30px;
    background: var(--color-white);
    border-bottom: 1px solid var(--color-border);
}

.brand img {
    height: 30px;
    width: auto;
    display: block;
}

.header {
    background: var(--color-primary);
    color: var(--color-white);
    padding: var(--spacing-section);
    box-shadow: 0 2px 10px var(--color-primary-shadow-20);
    text-align: center;
}

.header h1 {
    font-size: var(--font-lg);
    font-weight: var(--font-weight-bold);
    letter-spacing: -0.5px;
}

.header .subtitle {
    font-size: var(--font-sm);
    opacity: 0.9;
    font-weight: var(--font-weight-light);
    margin-top: 4px;
}

.main-content {
    padding: 30px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.site-link {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 16px 20px;
    border: 2px solid var(--color-border);
    border-radius: var(--btn-radius);
    color: var(--color-text);
    text-decoration: none;
    font-weight: var(--font-weight-semibold);
    transition: all var(--transition-base);
}

.site-link:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
    transform: translateY(-2px);
    box-shadow: 0 10px 25px var(--color-primary-shadow-10);
}

.site-link .code {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 44px;
    padding: 6px 10px;
    background: var(--color-bg-light);
    border-radius: 6px;
    font-size: 0.8rem;
    font-weight: var(--font-weight-bold);
    letter-spacing: 1px;
    text-transform: uppercase;
    color: var(--color-primary);
    transition: all var(--transition-base);
}

.site-link:hover .code {
    background: var(--color-primary);
    color: var(--color-white);
}

.site-link .arrow {
    margin-left: auto;
    color: var(--color-gray-light);
    transition: all var(--transition-base);
}

.site-link:hover .arrow {
    color: var(--color-primary);
    transform: translateX(4px);
}

@media (max-width: 480px) {
    .header h1 {
        font-size: 1.4rem;
    }

    .main-content {
        padding: 20px;
    }
}