/* ─── ARTVAS 协议页面样式（用户协议 / 隐私政策 / 退款规则） ─── */
:root {
    --bg-page: #fafaf7;
    --bg-card: #ffffff;
    --text-main: #1a1f2e;
    --text-sub: #4a5168;
    --text-mute: #8a8e9c;
    --gold: #C6A87C;
    --gold-deep: #8a7352;
    --border-soft: rgba(198, 168, 124, 0.18);
    --border-hair: rgba(0, 0, 0, 0.06);
    --table-head: #f5f1e8;
    --table-row: rgba(198, 168, 124, 0.04);
    --shadow-soft: 0 2px 12px rgba(40, 30, 20, 0.04);
    --font-serif: 'Noto Serif SC', 'Source Han Serif SC', 'Songti SC', serif;
    --font-sans: 'Lato', -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', sans-serif;
}

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

html { scroll-behavior: smooth; }

body {
    font-family: var(--font-sans);
    background: var(--bg-page);
    color: var(--text-main);
    line-height: 1.85;
    font-size: 15px;
    min-height: 100vh;
    padding: 40px 20px 80px;
}

.agreement-container {
    max-width: 880px;
    margin: 0 auto;
    background: var(--bg-card);
    border: 1px solid var(--border-hair);
    border-radius: 8px;
    box-shadow: var(--shadow-soft);
    overflow: hidden;
}

/* ─── 头部区 ─── */
.agreement-header {
    padding: 56px 64px 36px;
    border-bottom: 1px solid var(--border-soft);
    background: linear-gradient(180deg, #ffffff 0%, #fdfbf6 100%);
}

.brand {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 24px;
}
.brand-mark {
    width: 32px; height: 32px;
    background: var(--gold);
    color: #1a1a2e;
    border-radius: 4px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 14px;
    letter-spacing: 1px;
    font-family: var(--font-mono, 'JetBrains Mono', monospace);
}
.brand-text {
    font-size: 13px;
    color: var(--gold-deep);
    font-weight: 500;
    letter-spacing: 4px;
    text-transform: uppercase;
}

.agreement-title {
    font-family: var(--font-serif);
    font-size: 28px;
    font-weight: 700;
    color: var(--text-main);
    margin-bottom: 12px;
    letter-spacing: 1px;
}

.agreement-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 8px 24px;
    font-size: 13px;
    color: var(--text-mute);
    margin-top: 8px;
}
.agreement-meta span strong {
    color: var(--text-sub);
    font-weight: 500;
    margin-right: 4px;
}

/* ─── 正文区 ─── */
.agreement-body {
    padding: 40px 64px 56px;
}

.agreement-intro {
    background: var(--table-row);
    border-left: 3px solid var(--gold);
    padding: 16px 20px;
    margin-bottom: 32px;
    color: var(--text-sub);
    font-size: 14px;
    line-height: 1.85;
    border-radius: 0 4px 4px 0;
}
.agreement-intro p + p { margin-top: 8px; }
.agreement-intro strong { color: var(--text-main); }

.agreement-summary {
    margin-bottom: 36px;
    padding: 20px 24px;
    background: #fefcf6;
    border: 1px solid var(--border-soft);
    border-radius: 6px;
}
.agreement-summary h3 {
    font-family: var(--font-serif);
    font-size: 15px;
    color: var(--gold-deep);
    margin-bottom: 12px;
    font-weight: 700;
}
.agreement-summary ul {
    list-style: none;
    padding: 0;
}
.agreement-summary li {
    position: relative;
    padding-left: 20px;
    margin: 6px 0;
    font-size: 14px;
    color: var(--text-sub);
}
.agreement-summary li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--gold);
    font-weight: 700;
}

h2.section {
    font-family: var(--font-serif);
    font-size: 18px;
    font-weight: 700;
    color: var(--text-main);
    margin: 36px 0 16px;
    padding-bottom: 10px;
    border-bottom: 1px dashed var(--border-soft);
}
h2.section:first-child { margin-top: 0; }

h3.subsection {
    font-size: 15px;
    font-weight: 700;
    color: var(--text-sub);
    margin: 24px 0 12px;
}

p { margin-bottom: 12px; color: var(--text-sub); }
p strong { color: var(--text-main); font-weight: 600; }

ol, ul {
    padding-left: 28px;
    margin-bottom: 14px;
}
ol li, ul li {
    margin-bottom: 8px;
    color: var(--text-sub);
}
ol ol, ul ul, ol ul, ul ol {
    padding-left: 24px;
    margin-top: 6px;
}

/* ─── 表格 ─── */
table {
    width: 100%;
    border-collapse: collapse;
    margin: 16px 0 24px;
    font-size: 14px;
    background: #fff;
    border: 1px solid var(--border-soft);
    border-radius: 4px;
    overflow: hidden;
}
table thead {
    background: var(--table-head);
}
table th {
    text-align: left;
    padding: 10px 14px;
    font-weight: 700;
    color: var(--text-main);
    font-size: 13px;
    border-bottom: 1px solid var(--border-soft);
}
table td {
    padding: 10px 14px;
    color: var(--text-sub);
    border-bottom: 1px solid var(--border-hair);
    vertical-align: top;
}
table tbody tr:last-child td { border-bottom: none; }
table tbody tr:nth-child(even) { background: var(--table-row); }

/* ─── 警示框 ─── */
.note-box {
    background: #fff8e8;
    border: 1px solid #f0d49b;
    border-left: 3px solid #d49a3c;
    border-radius: 0 4px 4px 0;
    padding: 12px 16px;
    margin: 16px 0;
    font-size: 14px;
    color: #6b4d1e;
}
.note-box strong { color: #4a3210; }

.danger-box {
    background: #fef0f0;
    border: 1px solid #f5c6c6;
    border-left: 3px solid #d96666;
    border-radius: 0 4px 4px 0;
    padding: 12px 16px;
    margin: 16px 0;
    font-size: 14px;
    color: #7a2222;
}

/* ─── 页脚 ─── */
.agreement-footer {
    margin-top: 48px;
    padding: 24px 0 0;
    border-top: 1px solid var(--border-soft);
    text-align: center;
    color: var(--text-mute);
    font-size: 12px;
    line-height: 1.9;
}
.agreement-footer p { margin: 0; color: var(--text-mute); }
.agreement-footer .legal-line {
    color: var(--text-sub);
    margin-bottom: 4px;
}
.agreement-footer a {
    color: var(--gold-deep);
    text-decoration: none;
    transition: color 0.2s;
}
.agreement-footer a:hover { color: var(--gold); }

/* ─── 顶部回到上一页链接 ─── */
.back-link {
    position: fixed;
    top: 20px; left: 20px;
    z-index: 10;
    background: rgba(255, 255, 255, 0.95);
    border: 1px solid var(--border-soft);
    border-radius: 50px;
    padding: 8px 18px;
    font-size: 13px;
    color: var(--text-sub);
    text-decoration: none;
    box-shadow: var(--shadow-soft);
    transition: all 0.2s;
    backdrop-filter: blur(8px);
}
.back-link:hover {
    background: #fff;
    color: var(--gold-deep);
    border-color: var(--gold);
}

/* ─── 移动端 ─── */
@media (max-width: 768px) {
    body { padding: 20px 12px 60px; }
    .agreement-header { padding: 32px 24px 24px; }
    .agreement-body { padding: 28px 24px 36px; }
    .agreement-title { font-size: 22px; }
    .back-link { top: 12px; left: 12px; }
    table { font-size: 12px; display: block; overflow-x: auto; }
    table th, table td { padding: 8px 10px; }
}

/* ─── 打印样式 ─── */
@media print {
    body { padding: 0; background: white; }
    .back-link { display: none; }
    .agreement-container {
        box-shadow: none;
        border: none;
    }
    .agreement-header {
        padding: 20px 0;
        background: white;
    }
    .agreement-body { padding: 20px 0; }
}