:root {
    --primary: #0f5f87;
    --primary-dark: #0b4562;
    --primary-soft: #e0f2fe;
    --bg: #f8f9fa;
    --text: #333;
    --text-muted: #666;
    --line: #eee;
    --white: #fff;
    --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

body {
    margin: 0;
    font-family: var(--font);
    background-color: var(--bg);
    color: var(--text);
    -webkit-font-smoothing: antialiased;
}

.app-shell {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.content-wrapper {
    flex: 1 0 auto;
}

.sk-card {
    background: var(--white);
    border: 1px solid var(--line);
    border-radius: 8px;
    padding: 24px;
    box-sizing: border-box;
}

.sk-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 10px 20px;
    font-size: 14px;
    font-weight: 600;
    border-radius: 6px;
    text-decoration: none;
    transition: all 0.2s ease;
    cursor: pointer;
}

.sk-btn-primary {
    background-color: var(--primary);
    color: var(--white);
    border: 1px solid var(--primary);
}

.sk-btn-primary:hover {
    background-color: var(--primary-dark);
}

.sk-btn-outline {
    background-color: transparent;
    color: var(--primary);
    border: 2px solid var(--primary);
}

.sk-btn-outline:hover {
    background-color: var(--primary-soft);
}

.sk-detail-list dt {
    font-weight: 700;
    color: var(--text-muted);
}

.sk-detail-list dd {
    margin: 0;
    color: var(--text);
}