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

:root {
    --primary-color: #0a2540;
    --secondary-color: #1e3a5f;
    --accent-blue: #2563eb;
    --accent-blue-hover: #1d4ed8;
    --border-color: #e2e8f0;
    --text-primary: #1f2d3d;
    --text-secondary: #2d3e50;
    --text-muted: #5b6e8c;
    --bg-page: #f5f7fb;
    --bg-card: #ffffff;
    --shadow-sm: 0 4px 12px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 12px 30px rgba(0, 0, 0, 0.08);
}

html {
    scroll-behavior: smooth;
}

body {
    background: var(--bg-page);
    font-family: system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', Helvetica, 'PingFang SC', 'Microsoft YaHei', sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    padding: 2rem 1rem;
    min-height: 100vh;
}

.policy-container {
    max-width: 900px;
    margin: 0 auto;
    background: var(--bg-card);
    border-radius: 28px;
    box-shadow: var(--shadow-lg);
    overflow: hidden;
    padding: 3rem 2.5rem;
}

h1 {
    font-size: 2.25rem;
    font-weight: 700;
    margin-top: 0.2rem;
    margin-bottom: 1.75rem;
    padding-bottom: 0.75rem;
    border-bottom: 3px solid var(--border-color);
    letter-spacing: -0.01em;
    color: var(--primary-color);
    text-align: center;
}

h2 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-top: 2.25rem;
    margin-bottom: 1rem;
    color: var(--secondary-color);
    border-left: 4px solid var(--accent-blue);
    padding-left: 1rem;
    background: linear-gradient(90deg, rgba(37, 99, 235, 0.05) 0%, transparent 100%);
    padding-top: 0.25rem;
    padding-bottom: 0.25rem;
}

h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-top: 1.75rem;
    margin-bottom: 0.75rem;
    color: #2c3e50;
    display: inline-block;
}

p {
    margin-bottom: 1.25rem;
    font-size: 1rem;
    color: var(--text-secondary);
    line-height: 1.75;
}

a {
    color: var(--accent-blue);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s ease, background-color 0.2s ease;
}

a:hover {
    color: var(--accent-blue-hover);
    text-decoration: underline;
}

a[href^="mailto"] {
    background-color: #eff6ff;
    padding: 0.2rem 0.5rem;
    border-radius: 8px;
    white-space: nowrap;
}

a[href^="mailto"]:hover {
    background-color: #dbeafe;
    text-decoration: none;
}

hr {
    margin: 2rem 0 1rem;
    border: none;
    border-top: 1px solid var(--border-color);
}

.note-subtle {
    font-size: 0.9rem;
    color: var(--text-muted);
}

.contact-block {
    margin-top: 0.5rem;
}

.policy-container section:not(:last-child) {
    margin-bottom: 0.25rem;
}

h2 + h3 {
    margin-top: 0.5rem;
}

@media (max-width: 768px) {
    body {
        padding: 1.5rem 0.75rem;
    }
    
    .policy-container {
        padding: 2rem 1.5rem;
        border-radius: 20px;
    }
    
    h1 {
        font-size: 1.75rem;
        margin-bottom: 1.5rem;
        padding-bottom: 0.5rem;
    }
    
    h2 {
        font-size: 1.35rem;
        margin-top: 1.75rem;
        padding-left: 0.75rem;
    }
    
    h3 {
        font-size: 1.15rem;
        margin-top: 1.5rem;
    }
    
    p {
        font-size: 0.95rem;
        line-height: 1.7;
    }
}

@media (max-width: 480px) {
    body {
        padding: 1rem 0.5rem;
    }
    
    .policy-container {
        padding: 1.5rem 1rem;
        border-radius: 16px;
    }
    
    h1 {
        font-size: 1.5rem;
        margin-bottom: 1.25rem;
    }
    
    h2 {
        font-size: 1.25rem;
        margin-top: 1.5rem;
        padding-left: 0.6rem;
    }
    
    h3 {
        font-size: 1.1rem;
        margin-top: 1.25rem;
    }
    
    p {
        font-size: 0.9rem;
        line-height: 1.65;
        margin-bottom: 1rem;
    }
    
    a[href^="mailto"] {
        padding: 0.15rem 0.4rem;
        font-size: 0.85rem;
    }
}

@media (min-width: 1200px) {
    .policy-container {
        max-width: 950px;
        padding: 3.5rem 3rem;
    }
    
    h1 {
        font-size: 2.5rem;
    }
    
    h2 {
        font-size: 1.6rem;
    }
}