.page-header {
    position: sticky;
    top: 0;
    z-index: 50;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 24px;
    background: var(--bg-sidebar);
    backdrop-filter: var(--backdrop);
    border-bottom: 1px solid var(--border-light);
    box-shadow: var(--shadow-sm);
}

.page-header-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 18px;
    font-weight: 700;
    color: var(--text-primary);
}

.page-header-brand img {
    width: 28px;
    height: 28px;
}

.page-header-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

.page-header-btn {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-light);
    background: var(--bg-card);
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
}

.page-header-btn:hover {
    background: var(--bg-hover);
    color: var(--primary);
}

.page-header-btn svg {
    width: 18px;
    height: 18px;
}

.page-back {
    padding: 8px 16px;
    border-radius: var(--radius-md);
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 500;
    transition: all 0.2s ease;
}

.page-back:hover {
    background: var(--bg-hover);
    color: var(--primary);
}

.page-container {
    max-width: 800px;
    margin: 0 auto;
    padding: 32px 24px 64px;
}

.page-card {
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    padding: 32px;
    box-shadow: var(--shadow-sm);
    backdrop-filter: var(--backdrop);
}

.page-title {
    font-size: 28px;
    font-weight: 700;
    margin: 0 0 24px;
    color: var(--text-primary);
}

.page-content {
    font-size: 16px;
    line-height: 1.8;
    color: var(--text-secondary);
}

.page-content h2 {
    font-size: 22px;
    font-weight: 600;
    margin: 28px 0 14px;
    color: var(--text-primary);
}

.page-content h3 {
    font-size: 18px;
    font-weight: 600;
    margin: 22px 0 10px;
    color: var(--text-primary);
}

.page-content p {
    margin: 12px 0;
}

.page-content ul,
.page-content ol {
    margin: 12px 0;
    padding-left: 24px;
}

.page-content li {
    margin: 6px 0;
}

.page-content a {
    color: var(--primary);
    text-decoration: underline;
}

.page-content img {
    max-width: 100%;
    border-radius: var(--radius-md);
}

.page-loading {
    text-align: center;
    padding: 60px 24px;
    color: var(--text-secondary);
}

.theme-icon-sun,
.theme-icon-moon {
    position: absolute;
    transition: opacity 0.2s ease, transform 0.2s ease;
}

.theme-icon-moon {
    opacity: 0;
    transform: rotate(-90deg) scale(0.5);
}

/* ===== Markdown rendering ===== */
.page-content.markdown-body {
    line-height: 1.8;
    color: var(--text-primary);
}

.page-content.markdown-body h1,
.page-content.markdown-body h2,
.page-content.markdown-body h3,
.page-content.markdown-body h4,
.page-content.markdown-body h5,
.page-content.markdown-body h6 {
    margin-top: 1.4em;
    margin-bottom: 0.6em;
    font-weight: 600;
    line-height: 1.4;
    color: var(--text-primary);
}

.page-content.markdown-body h1 { font-size: 1.8em; }
.page-content.markdown-body h2 { font-size: 1.5em; }
.page-content.markdown-body h3 { font-size: 1.25em; }
.page-content.markdown-body h4 { font-size: 1.1em; }
.page-content.markdown-body h5 { font-size: 1em; }
.page-content.markdown-body h6 { font-size: 0.9em; }

.page-content.markdown-body p {
    margin-bottom: 1em;
}

.page-content.markdown-body ul,
.page-content.markdown-body ol {
    margin-bottom: 1em;
    padding-left: 1.5em;
}

.page-content.markdown-body li {
    margin-bottom: 0.4em;
}

.page-content.markdown-body a {
    color: var(--primary);
    text-decoration: underline;
    word-break: break-word;
}

.page-content.markdown-body a:hover {
    color: var(--primary-light);
}

.page-content.markdown-body strong {
    font-weight: 600;
}

.page-content.markdown-body code {
    font-family: ui-monospace, SFMono-Regular, 'SF Mono', Consolas, 'Liberation Mono', Menlo, monospace;
    background: var(--bg-base);
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 0.9em;
    color: var(--text-primary);
}

.page-content.markdown-body pre {
    background: var(--bg-base);
    padding: 14px;
    border-radius: var(--radius-md);
    overflow-x: auto;
    margin-bottom: 1em;
}

.page-content.markdown-body pre code {
    background: transparent;
    padding: 0;
    font-size: 0.9em;
}

.page-content.markdown-body blockquote {
    border-left: 4px solid var(--primary);
    padding: 8px 0 8px 16px;
    margin: 0 0 1em;
    color: var(--text-secondary);
    background: var(--bg-base);
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
}

.page-content.markdown-body hr {
    border: none;
    border-top: 1px solid var(--border-light);
    margin: 1.5em 0;
}

.page-content.markdown-body img {
    max-width: 100%;
    border-radius: var(--radius-md);
    height: auto;
}

[data-theme="dark"] .theme-icon-sun,
.theme-dark .theme-icon-sun {
    opacity: 0;
    transform: rotate(90deg) scale(0.5);
}

[data-theme="dark"] .theme-icon-moon,
.theme-dark .theme-icon-moon {
    opacity: 1;
    transform: rotate(0) scale(1);
}

@media (max-width: 640px) {
    .page-header {
        padding: 12px 16px;
    }

    .page-container {
        padding: 20px 16px 48px;
    }

    .page-card {
        padding: 22px;
    }

    .page-title {
        font-size: 24px;
    }
}

/* ===== 联系表单 ===== */
.contact-form-section {
    margin-top: 32px;
    padding-top: 28px;
    border-top: 1px solid var(--border-light);
}

.contact-form-title {
    font-size: 20px;
    font-weight: 600;
    margin: 0 0 20px;
    color: var(--text-primary);
}

.contact-form .form-group {
    margin-bottom: 16px;
}

.contact-form label {
    display: block;
    margin-bottom: 6px;
    font-size: 14px;
    color: var(--text-primary);
    font-weight: 500;
}

.contact-form .required {
    color: var(--danger, #ef4444);
}

.contact-form input,
.contact-form textarea {
    width: 100%;
    padding: 10px 14px;
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md, 8px);
    background: var(--bg-card);
    color: var(--text-primary);
    font-size: 15px;
    transition: border-color 0.2s, box-shadow 0.2s;
}

.contact-form input:focus,
.contact-form textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.12);
}

.contact-form textarea {
    resize: vertical;
    min-height: 120px;
    line-height: 1.6;
}

.captcha-box {
    display: flex;
    justify-content: flex-start;
}

.form-hint {
    margin: 8px 0 16px;
    font-size: 13px;
    color: var(--text-tertiary, #999);
}

.contact-form-message {
    margin: 12px 0;
    padding: 10px 14px;
    border-radius: var(--radius-md, 8px);
    font-size: 14px;
    text-align: center;
}

.contact-form-message.success {
    background: rgba(34, 197, 94, 0.1);
    color: var(--success, #22c55e);
}

.contact-form-message.error {
    background: rgba(239, 68, 68, 0.1);
    color: var(--danger, #ef4444);
}

.contact-form-message.warning {
    background: rgba(245, 158, 11, 0.12);
    color: #b45309;
}

.contact-success-panel {
    margin-top: 20px;
    padding: 20px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm, 8px);
    background: var(--bg-card);
}

.contact-success-panel .contact-form-title {
    margin-bottom: 10px;
}

.contact-receipt-box {
    margin: 16px 0;
    padding: 14px;
    border: 1px solid var(--border-light);
    border-radius: var(--radius-sm, 8px);
    background: var(--bg-base);
}

.contact-receipt-code {
    display: block;
    max-width: 100%;
    padding: 10px 12px;
    overflow-wrap: anywhere;
    word-break: break-all;
    border-radius: var(--radius-sm, 8px);
    background: var(--bg-hover);
    color: var(--text-primary);
}

.contact-success-warning {
    margin: 14px 0 0;
    color: #b45309;
    font-size: 13px;
    line-height: 1.65;
}

.contact-form .btn-block {
    width: 100%;
    padding: 12px 16px;
    font-size: 15px;
    font-weight: 600;
    border: none;
    border-radius: var(--radius-md, 8px);
    cursor: pointer;
    transition: opacity 0.2s;
}

.contact-form .btn-block:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

/* ===== R97-3（P22 / 站长定版 2026-09-14）：独立搜索页顶部布局（仅 PC） =====
   口径：a.网站 LOGO＋站名移至中间栏顶部左上；b.主题按钮＋「返回首页」移至中间栏顶部右上（功能不变仅移位）；
   c.中间栏宽度 +150px（800 → 950）、常见视口无横向溢出。
   移动端 search.html 布局零变化：本段全部规则包在 min-width:641px 内，移动端（≤640px）命中面为零，
   原通栏 sticky 顶栏形态与既有 640px 断点规则逐字保留（不新增/不覆盖移动端断言面）。
   限定实现＝body[data-page="search"] 上下文限定（page.css 为 legal/privacy/about 等页共用壳，
   其余页 .page-header/.page-container 行为零变化）。 */
@media (min-width: 641px) {
    body[data-page="search"] .page-container {
        max-width: 950px; /* 中间栏 +150px（800 → 950；box-sizing:border-box，卡片宽度同步 +150px） */
    }

    /* 通栏 sticky 顶栏退化为「中间栏顶部行」：吸附/背景/描边/阴影/毛玻璃撤销，元素样式不变（仍为既有
       .page-header-brand / .page-header-btn / .page-back 三件套）；
       左右内边距对齐中间栏内容盒左边缘＝max(0px, (100% − 950px)/2) + 24px（与 pc.css:2915 同式），
       使 LOGO＋站名落中间栏左上、主题＋返回落中间栏右上，且与 .page-card 左右边缘齐平。 */
    body[data-page="search"] .page-header {
        position: static;
        padding: 14px calc(max(0px, (100% - 950px) / 2) + 24px) 0;
        background: transparent;
        border-bottom: none;
        box-shadow: none;
        backdrop-filter: none;
    }
}

/* 留言数据权利申请页：复用 page.css 表单与卡片主题，仅补充本页布局。 */
.rights-page-container {
    max-width: 920px;
}

.rights-lead {
    color: var(--text-secondary);
    margin-bottom: 20px;
}

.rights-form {
    display: grid;
    gap: 16px;
}

.rights-auth-block {
    padding: 16px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background: var(--bg-card);
}

.rights-code-row {
    min-width: 0;
}

.rights-inline-control {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 10px;
}

.rights-actions {
    display: flex;
    justify-content: flex-end;
    gap: 10px;
    flex-wrap: wrap;
}

.rights-result {
    margin-top: 20px;
    padding: 18px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background: var(--bg-card);
    overflow-wrap: anywhere;
}

.rights-result code {
    display: inline-block;
    max-width: 100%;
    overflow-wrap: anywhere;
}

.rights-query-section {
    margin-top: 34px;
    padding-top: 24px;
    border-top: 1px solid var(--border-color);
}

.rights-notice {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-top: 10px;
}

@media (max-width: 640px) {
    .rights-inline-control {
        grid-template-columns: 1fr;
    }

    .rights-actions {
        justify-content: stretch;
    }

    .rights-actions .btn {
        width: 100%;
    }
}