:root {
    --page-bg: #f7f8fa;
    --surface: #ffffff;
    --text: #1f2937;
    --muted: #667085;
    --heading: #0b2545;
    --accent: #2e74b5;
    --accent-soft: #eef5fc;
    --border: #d7dee8;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    background: var(--page-bg);
    color: var(--text);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    font-size: 16px;
    line-height: 1.8;
}

a {
    color: var(--accent);
    text-underline-offset: 3px;
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 10;
    background: rgba(255, 255, 255, 0.94);
    border-bottom: 1px solid var(--border);
    backdrop-filter: blur(16px);
}

.site-header__inner {
    width: min(960px, calc(100% - 32px));
    min-height: 64px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    color: #111827;
    font-weight: 700;
    text-decoration: none;
}

.brand img {
    width: 30px;
    height: 30px;
    border-radius: 50%;
}

.back-link {
    color: var(--muted);
    font-size: 14px;
    text-decoration: none;
}

.back-link:hover {
    color: var(--heading);
}

main {
    width: min(960px, calc(100% - 32px));
    margin: 48px auto;
}

.legal-document {
    padding: clamp(28px, 5vw, 64px);
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 18px;
    box-shadow: 0 18px 50px rgba(15, 23, 42, 0.06);
}

.document-header {
    padding-bottom: 24px;
    border-bottom: 3px solid var(--accent);
}

.document-header h1 {
    margin: 0 0 10px;
    color: var(--heading);
    font-size: clamp(30px, 5vw, 42px);
    line-height: 1.2;
    letter-spacing: -0.03em;
}

.document-meta {
    margin: 0;
    color: var(--muted);
    font-size: 14px;
}

.legal-document h2 {
    margin: 44px 0 14px;
    color: var(--accent);
    font-size: 25px;
    line-height: 1.35;
}

.legal-document h3 {
    margin: 28px 0 10px;
    color: var(--accent);
    font-size: 19px;
    line-height: 1.4;
}

.legal-document h4 {
    margin: 22px 0 8px;
    color: var(--heading);
    font-size: 17px;
}

.legal-document p {
    margin: 0 0 14px;
}

.legal-document ul,
.legal-document ol {
    margin: 8px 0 18px;
    padding-left: 28px;
}

.legal-document li {
    margin: 8px 0;
    padding-left: 4px;
}

.notice {
    margin: 24px 0 32px;
    padding: 18px 20px;
    background: var(--accent-soft);
    border: 1px solid #c9dcef;
    border-radius: 12px;
}

.notice__title {
    display: block;
    margin-bottom: 6px;
    color: var(--heading);
    font-size: 17px;
}

.notice p:last-child {
    margin-bottom: 0;
}

.table-wrap {
    margin: 18px 0 24px;
    overflow-x: auto;
    border: 1px solid var(--border);
    border-radius: 10px;
}

table {
    width: 100%;
    min-width: 760px;
    border-collapse: collapse;
    font-size: 14px;
    line-height: 1.65;
}

th,
td {
    padding: 12px 14px;
    text-align: left;
    vertical-align: top;
    border-right: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
}

th {
    color: var(--heading);
    background: #f2f4f7;
    font-weight: 700;
}

tr:last-child td {
    border-bottom: 0;
}

th:last-child,
td:last-child {
    border-right: 0;
}

.legal-footer {
    width: min(960px, calc(100% - 32px));
    margin: 0 auto 40px;
    color: var(--muted);
    text-align: center;
    font-size: 13px;
}

.legal-footer__links {
    display: flex;
    justify-content: center;
    gap: 16px;
    margin-bottom: 8px;
}

.legal-footer a {
    color: var(--muted);
}

@media (max-width: 640px) {
    .site-header__inner,
    main,
    .legal-footer {
        width: min(100% - 24px, 960px);
    }

    main {
        margin: 20px auto 32px;
    }

    .legal-document {
        padding: 24px 18px 34px;
        border-radius: 12px;
    }

    .legal-document h2 {
        margin-top: 34px;
        font-size: 22px;
    }

    .back-link {
        font-size: 13px;
    }
}

@media print {
    body {
        background: #ffffff;
    }

    .site-header,
    .legal-footer {
        display: none;
    }

    main {
        width: 100%;
        margin: 0;
    }

    .legal-document {
        padding: 0;
        border: 0;
        box-shadow: none;
    }
}