:root {
    --color-bg: #f5f8fc;
    --color-surface: #ffffff;
    --color-text: #142033;
    --color-muted: #66758c;
    --color-primary: #1769e0;
    --color-primary-dark: #0f4fb0;
    --color-line: #dce6f2;
    --color-danger: #c93535;
    --color-success: #16845b;
    --shadow-card: 0 16px 40px rgba(32, 74, 135, 0.12);
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    background: var(--color-bg);
    color: var(--color-text);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", sans-serif;
    line-height: 1.6;
}

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

button,
input {
    font: inherit;
}

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

.muted {
    color: var(--color-muted);
}

.eyebrow {
    color: var(--color-primary);
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 0;
    margin-bottom: 0.4rem;
    text-transform: uppercase;
}

.button {
    align-items: center;
    border: 1px solid transparent;
    border-radius: 8px;
    cursor: pointer;
    display: inline-flex;
    font-weight: 700;
    justify-content: center;
    min-height: 44px;
    padding: 0.75rem 1rem;
    transition: 0.2s ease;
}

.button.primary {
    background: var(--color-primary);
    color: #ffffff;
}

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

.button.secondary {
    background: #ffffff;
    border-color: var(--color-line);
    color: var(--color-primary);
}

.button.full {
    width: 100%;
}

.alert {
    border-radius: 8px;
    margin: 1rem 0;
    padding: 0.8rem 0.95rem;
}

.alert.success {
    background: #e8f7f1;
    color: var(--color-success);
}

.alert.danger {
    background: #fff0f0;
    color: var(--color-danger);
}