* { box-sizing: border-box; }
body {
    margin: 0;
    font-family: "Segoe UI", "Microsoft YaHei", sans-serif;
    background: #f0f2f5;
    color: #1a1a1a;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}
.container { max-width: 1100px; margin: 0 auto; padding: 0 20px; }
.site-header {
    background: linear-gradient(135deg, #1e3a5f 0%, #2d5a87 100%);
    color: #fff;
    padding: 16px 0;
    box-shadow: 0 2px 8px rgba(0,0,0,.15);
}
.site-header .brand {
    font-size: 1.35rem;
    font-weight: 600;
    color: #fff;
    text-decoration: none;
}
.site-header .tagline {
    margin-left: 16px;
    opacity: .85;
    font-size: .9rem;
}
.site-main { flex: 1; padding: 24px 0; }
.site-footer {
    padding: 16px 0;
    text-align: center;
    color: #666;
    font-size: .85rem;
    border-top: 1px solid #ddd;
    background: #fff;
}
.card {
    background: #fff;
    border-radius: 8px;
    padding: 24px;
    margin-bottom: 20px;
    box-shadow: 0 1px 4px rgba(0,0,0,.08);
}
.card h1, .card h2 { margin-top: 0; }
.hint { color: #555; line-height: 1.6; }
.hint code { background: #eef; padding: 2px 6px; border-radius: 4px; }
.upload-form { margin-top: 16px; }
.upload-label { display: flex; gap: 12px; align-items: center; flex-wrap: wrap; }
.btn {
    display: inline-block;
    padding: 8px 16px;
    border: 1px solid #ccc;
    border-radius: 6px;
    background: #fff;
    color: #333;
    text-decoration: none;
    cursor: pointer;
    font-size: 14px;
}
.btn:hover { background: #f5f5f5; }
.btn-primary { background: #2d5a87; color: #fff; border-color: #2d5a87; }
.btn-primary:hover { background: #1e3a5f; }
.btn-danger { color: #c0392b; border-color: #e74c3c; }
.btn-danger:hover { background: #fdecea; }
.btn-sm { padding: 4px 10px; font-size: 13px; }
.doc-table { width: 100%; border-collapse: collapse; }
.doc-table th, .doc-table td {
    padding: 10px 12px;
    text-align: left;
    border-bottom: 1px solid #eee;
}
.doc-table th { background: #f8f9fa; font-weight: 600; }
.doc-table .actions { white-space: nowrap; }
.doc-table .actions form { margin-left: 4px; }
.empty { color: #888; }
.alert {
    max-width: 1100px;
    margin: 0 auto 16px;
    padding: 12px 20px;
    border-radius: 6px;
}
.alert-success { background: #d4edda; color: #155724; }
.alert-error { background: #f8d7da; color: #721c24; }
.editor-page {
    display: flex;
    flex-direction: column;
    height: calc(100vh - 120px);
    margin: -24px 0 0;
}
.editor-toolbar {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 10px 20px;
    background: #fff;
    border-bottom: 1px solid #ddd;
    flex-shrink: 0;
}
.editor-title { font-weight: 600; }
.editor-hint { color: #666; font-size: .85rem; margin-left: auto; }
.editor-container {
    flex: 1;
    min-height: 400px;
    background: #e8e8e8;
}
.editor-error {
    padding: 40px;
    text-align: center;
    color: #c0392b;
    max-width: 600px;
    margin: 40px auto;
}