/**
 * 息壤信息咨询服务主题 - 主样式表
 * 设计理念：简约、优雅、高级质感
 * 配色方案：黑白灰主色调 + 科技蓝点缀
 */

/* ============================================
   CSS变量定义 - 支持深色/浅色主题
   ============================================ */

:root {
    /* 浅色主题颜色 */
    --color-primary: #0066FF;
    --color-primary-dark: #0052CC;
    --color-primary-light: #3385FF;

    --color-background: #FFFFFF;
    --color-surface: #F8F9FA;
    --color-surface-hover: #F0F1F3;

    --color-text-primary: #1A1A1A;
    --color-text-secondary: #4A4A4A;
    --color-text-tertiary: #6B6B6B;
    --color-text-inverse: #FFFFFF;

    --color-border: #E5E5E5;
    --color-border-hover: #D0D0D0;

    --color-shadow: rgba(0, 0, 0, 0.08);
    --color-shadow-lg: rgba(0, 0, 0, 0.12);

    /* 间距系统 */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    --spacing-3xl: 6rem;

    /* 字体系统 */
    --font-family-base: -apple-system, BlinkMacSystemFont, "Segoe UI", "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    --font-family-mono: "SF Mono", Monaco, "Cascadia Code", "Roboto Mono", Consolas, "Courier New", monospace;

    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 2rem;
    --font-size-4xl: 2.5rem;
    --font-size-5xl: 3rem;

    /* 圆角 */
    --radius-sm: 0.25rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-full: 9999px;

    /* 过渡动画 */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 350ms cubic-bezier(0.4, 0, 0.2, 1);

    /* Z-index层级 */
    --z-base: 1;
    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-modal-backdrop: 1040;
    --z-modal: 1050;
    --z-popover: 1060;
    --z-tooltip: 1070;

    /* 阴影（兼容变量） */
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.10);
    --shadow-lg: 0 8px 24px rgba(0,0,0,0.14);
    --transition-smooth: cubic-bezier(0.4, 0, 0.2, 1);
}

/* 深色主题 */
[data-theme="dark"] {
    --color-background: #0A0A0A;
    --color-surface: #1A1A1A;
    --color-surface-hover: #2C2C2C;

    --color-text-primary: #FFFFFF;
    --color-text-secondary: #B8B8B8;
    --color-text-tertiary: #8E8E8E;
    --color-text-inverse: #1A1A1A;

    --color-border: #2C2C2C;
    --color-border-hover: #3D3D3D;

    --color-shadow: rgba(0, 0, 0, 0.3);
    --color-shadow-lg: rgba(0, 0, 0, 0.5);
}

/* 自动主题（跟随系统） */
@media (prefers-color-scheme: dark) {
    [data-theme="auto"] {
        --color-background: #0A0A0A;
        --color-surface: #1A1A1A;
        --color-surface-hover: #2C2C2C;

        --color-text-primary: #FFFFFF;
        --color-text-secondary: #B8B8B8;
        --color-text-tertiary: #8E8E8E;
        --color-text-inverse: #1A1A1A;

        --color-border: #2C2C2C;
        --color-border-hover: #3D3D3D;

        --color-shadow: rgba(0, 0, 0, 0.3);
        --color-shadow-lg: rgba(0, 0, 0, 0.5);
    }

    /* 自动深色模式下同样反转黑色LOGO */
    [data-theme="auto"] .xr-logo-img {
        filter: invert(1) brightness(1.2);
    }
}

/* ============================================
   全局重置和基础样式
   ============================================ */

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

html {
    font-size: 16px;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
    scroll-behavior: smooth;
    /* 移动端触摸优化 */
    -webkit-tap-highlight-color: transparent;
    touch-action: manipulation;
}

body {
    font-family: var(--font-family-base);
    font-size: var(--font-size-base);
    color: var(--color-text-primary);
    background-color: var(--color-background);
    transition: background-color var(--transition-base), color var(--transition-base);
    /* 防止iOS Safari橡皮筋效果影响固定元素 */
    position: relative;
    overflow-x: hidden;
}

/* 移动端触摸反馈 */
a, button, [role="button"], .xr-clickable {
    -webkit-tap-highlight-color: transparent;
    touch-action: manipulation;
    user-select: none;
    -webkit-user-select: none;
}

/* 确保所有可点击元素有cursor pointer */
a, button, [role="button"], .xr-clickable,
.xr-nav-link, .xr-btn, .xr-faq-question,
.xr-footer-legal-link, .xr-theme-btn,
.xr-theme-option, .xr-back-to-top,
.xr-modal-close, .xr-mobile-menu-btn {
    cursor: pointer;
}

/* 移动端触摸反馈样式 */
.touching {
    opacity: 0.7 !important;
    transform: scale(0.98) !important;
    transition: opacity 0.1s ease, transform 0.1s ease !important;
}

/* 特定元素的触摸反馈优化 */
.xr-btn.touching {
    opacity: 0.85 !important;
}

.xr-nav-link.touching,
.xr-faq-question.touching,
.xr-footer-column-title.touching {
    background-color: var(--color-hover) !important;
}

.xr-theme-option.touching {
    background-color: rgba(0, 102, 255, 0.15) !important;
}

/* 选中文本样式 */
::selection {
    background-color: var(--color-primary);
    color: white;
}

::-moz-selection {
    background-color: var(--color-primary);
    color: white;
}

/* 全局链接重置：消除浏览器默认蓝色/紫色下划线样式
   使用 :where() 将特异性降为零，确保任何类选择器（如按钮）均可覆盖 */
:where(a) {
    color: inherit;
    text-decoration: none;
}
:where(a:visited) {
    color: inherit;
}
:where(a:hover) {
    color: inherit;
}

/* 阻止移动端浏览器（iOS Safari等）自动检测链接的默认蓝色样式 */
a[x-apple-data-detectors],
a[x-apple-data-detectors]:link,
a[x-apple-data-detectors]:visited,
a[x-apple-data-detectors]:hover,
a[x-apple-data-detectors]:active {
    color: inherit !important;
    text-decoration: none !important;
}

/* 滚动条样式 */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--color-surface);
}

::-webkit-scrollbar-thumb {
    background: var(--color-border-hover);
    border-radius: var(--radius-full);
    transition: background var(--transition-fast);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--color-text-tertiary);
}

/* ============================================
   页面加载动画
   ============================================ */

.xr-page-loader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--color-background);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    /* 纯CSS自动隐藏：1.5秒后自动消失（不依赖JS） */
    animation: autoHideLoader 0.3s ease-out 1.5s forwards;
    pointer-events: none;
}

.xr-page-loader.hidden {
    opacity: 0;
    visibility: hidden;
}

.xr-loader-spinner {
    width: 48px;
    height: 48px;
    border: 3px solid var(--color-border);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* 自动隐藏加载器动画 */
@keyframes autoHideLoader {
    to {
        opacity: 0;
        visibility: hidden;
    }
}

/* ============================================
   布局容器
   ============================================ */

.xr-container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

.xr-container-narrow {
    max-width: 860px;
}

/* ============================================
   顶部导航栏
   ============================================ */

.xr-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: var(--color-background);
    border-bottom: 1px solid var(--color-border);
    z-index: var(--z-sticky);
    transition: transform var(--transition-base), background-color var(--transition-base),
                box-shadow var(--transition-base);
}

.xr-header.scrolled {
    box-shadow: 0 2px 8px var(--color-shadow);
}

.xr-header.hidden {
    transform: translateY(-100%);
}

.xr-header-inner {
    display: flex;
    align-items: center;
    justify-content: flex-start;
    gap: var(--spacing-xl);
    height: 72px;
}

/* 导航居右 */
.xr-nav {
    margin-left: auto;
}

/* Logo */
.xr-logo-link {
    text-decoration: none;
    color: var(--color-text-primary);
    font-weight: 700;
    font-size: var(--font-size-xl);
    font-family: var(--font-family-mono);
    letter-spacing: 0.05em;
    transition: color var(--transition-fast);
}

.xr-logo-link:hover {
    color: var(--color-primary);
}

.xr-logo-img {
    height: 40px;
    width: auto;
    display: block;
    transition: filter var(--transition-base);
}

/* 深色模式下反转LOGO颜色，使黑色LOGO在深色背景下可见 */
[data-theme="dark"] .xr-logo-img {
    filter: invert(1) brightness(1.2);
}

/* 导航菜单 */
.xr-nav {
    display: block;
}

.xr-nav-list {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    list-style: none;
}

.xr-nav-link {
    color: var(--color-text-secondary);
    text-decoration: none;
    font-weight: 500;
    font-size: var(--font-size-sm);
    letter-spacing: 0.02em;
    padding: var(--spacing-xs) 0;
    position: relative;
    transition: color var(--transition-fast);
}

.xr-nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--color-primary);
    transition: width var(--transition-base);
}

.xr-nav-link:hover {
    color: var(--color-text-primary);
}

.xr-nav-link:hover::after,
.xr-nav-link.active::after {
    width: 100%;
}
.xr-nav-link.active {
    color: var(--color-primary);
}

/* ---- 下拉导航（桌面端 hover） ---- */
.xr-nav-item {
    position: relative;
}
/* 带下拉箭头的导航链接：保持与普通链接一致的 inline 渲染，
   箭头以 inline-block + vertical-align 对齐，避免影响基线 */
.xr-nav-arrow {
    display: inline-block;
    vertical-align: -2px;
    margin-left: 2px;
    width: 12px;
    height: 12px;
    opacity: 0.5;
    flex-shrink: 0;
    transition: transform var(--transition-fast);
}
.xr-nav-has-dropdown:hover > .xr-nav-link .xr-nav-arrow {
    transform: rotate(180deg);
    opacity: 0.8;
}
.xr-nav-dropdown {
    position: absolute;
    top: calc(100% + 10px);
    left: 50%;
    transform: translateX(-50%) translateY(6px);
    background: var(--color-background);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    box-shadow: 0 8px 24px var(--color-shadow-lg);
    min-width: 140px;
    padding: 6px 0;
    list-style: none;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-fast), visibility var(--transition-fast), transform var(--transition-fast);
    z-index: var(--z-dropdown);
    pointer-events: none;
}
/* 小三角箭头 */
.xr-nav-dropdown::before {
    content: '';
    position: absolute;
    top: -7px;
    left: 50%;
    transform: translateX(-50%);
    border: 7px solid transparent;
    border-top: none;
    border-bottom-color: var(--color-border);
}
.xr-nav-dropdown::after {
    content: '';
    position: absolute;
    top: -6px;
    left: 50%;
    transform: translateX(-50%);
    border: 6px solid transparent;
    border-top: none;
    border-bottom-color: var(--color-background);
}
.xr-nav-has-dropdown:hover > .xr-nav-dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
    pointer-events: auto;
}
.xr-nav-dropdown-link {
    display: block;
    padding: 8px 18px;
    color: var(--color-text-secondary);
    text-decoration: none;
    font-size: var(--font-size-sm);
    font-weight: 400;
    white-space: nowrap;
    transition: color var(--transition-fast), background-color var(--transition-fast);
}
.xr-nav-dropdown-link:hover {
    color: var(--color-primary);
    background: var(--color-surface);
}

/* 右侧工具栏 */
.xr-header-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

/* 悬浮主题切换按钮（右下角FAB） */
/* 位置：back-to-top(bottom:24px, h:48px) + gap:16px = bottom:88px */
.xr-theme-fab {
    position: fixed;
    bottom: 88px;
    right: var(--spacing-lg);
    z-index: var(--z-fixed);
}
.xr-theme-fab-btn {
    width: 48px;
    height: 48px;
    background: var(--color-background);
    border: 1.5px solid var(--color-border);
    border-radius: var(--radius-full);
    color: var(--color-text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 16px var(--color-shadow-lg);
    transition: all var(--transition-base);
    position: relative;
}
.xr-theme-fab-btn:hover {
    background: var(--color-surface);
    color: var(--color-primary);
    border-color: var(--color-primary);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px var(--color-shadow-lg);
}
.xr-theme-fab-btn .xr-icon {
    width: 20px;
    height: 20px;
    position: absolute;
    opacity: 0;
    transition: opacity var(--transition-fast);
}
/* 根据当前 data-theme 显示对应图标 */
[data-theme="light"] .xr-theme-fab-btn .xr-theme-icon-light { opacity: 1; }
[data-theme="dark"]  .xr-theme-fab-btn .xr-theme-icon-dark  { opacity: 1; }
[data-theme="auto"]  .xr-theme-fab-btn .xr-theme-icon-auto  { opacity: 1; }
@media (max-width: 768px) {
    /* 768px: back-to-top bottom:24px h:44px + gap:16px = 84px */
    .xr-theme-fab { bottom: 84px; right: var(--spacing-md); }
    .xr-theme-fab-btn { width: 44px; height: 44px; }
}
@media (max-width: 480px) {
    /* 480px: back-to-top bottom:24px h:40px + gap:16px = 80px */
    .xr-theme-fab { bottom: 80px; right: var(--spacing-md); }
    .xr-theme-fab-btn { width: 40px; height: 40px; }
}

/* 浮动自定义链接按钮 */
/* 位置：back-to-top(24px, h:48px) + gap:16px + theme-fab(h:48px) + gap:8px = bottom:144px */
.xr-fab-link {
    position: fixed;
    bottom: 144px;
    right: var(--spacing-lg);
    width: 48px;
    height: 48px;
    background: var(--color-background);
    border: 1.5px solid var(--color-border);
    border-radius: var(--radius-full);
    color: var(--color-text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 16px var(--color-shadow-lg);
    transition: all var(--transition-base);
    z-index: var(--z-fixed);
    text-decoration: none;
}
.xr-fab-link:hover {
    background: var(--color-primary);
    color: white;
    border-color: var(--color-primary);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0, 102, 255, 0.3);
}
.xr-fab-link .xr-icon {
    width: 20px;
    height: 20px;
}
@media (max-width: 768px) {
    /* 768px: bottom:24px h:44px + gap:16px + h:44px + gap:8px = 136px */
    .xr-fab-link { bottom: 136px; right: var(--spacing-md); width: 44px; height: 44px; }
}
@media (max-width: 480px) {
    /* 480px: bottom:24px h:40px + gap:16px + h:40px + gap:8px = 128px */
    .xr-fab-link { bottom: 128px; right: var(--spacing-md); width: 40px; height: 40px; }
}

/* 移动端汉堡菜单按钮 */
.xr-mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    color: var(--color-text-primary);
    cursor: pointer;
    padding: 8px;
    border-radius: var(--radius-md);
    transition: background-color var(--transition-fast);
    width: 36px;
    height: 36px;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}
.xr-mobile-menu-btn:hover { background-color: var(--color-surface); }

.xr-hamburger {
    display: flex;
    flex-direction: column;
    gap: 5px;
    width: 20px;
}
.xr-hamburger span {
    display: block;
    height: 2px;
    background: currentColor;
    border-radius: 2px;
    transition: all var(--transition-base);
    transform-origin: center;
}
.xr-mobile-menu-btn.active .xr-hamburger span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.xr-mobile-menu-btn.active .xr-hamburger span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.xr-mobile-menu-btn.active .xr-hamburger span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.xr-mobile-menu-overlay {
    display: none;
    position: fixed;
    top: 72px;
    left: 0;
    width: 100%;
    height: calc(100vh - 72px);
    background-color: rgba(0, 0, 0, 0.5);
    z-index: var(--z-dropdown);
    opacity: 0;
    transition: opacity var(--transition-base);
    pointer-events: none;
}
.xr-mobile-menu-overlay.active {
    opacity: 1;
    pointer-events: auto;
}

/* ============================================
   Hero首屏区域
   ============================================ */

.xr-hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    margin-top: 72px;
    padding: var(--spacing-3xl) 0;
}

.xr-hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--color-background) 0%, var(--color-surface) 100%);
    z-index: -1;
}

.xr-hero-bg::before {
    content: '';
    position: absolute;
    top: 20%;
    left: 10%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(0, 102, 255, 0.15) 0%, transparent 70%);
    border-radius: 50%;
    filter: blur(60px);
    animation: float 20s ease-in-out infinite;
}

.xr-hero-bg::after {
    content: '';
    position: absolute;
    bottom: 20%;
    right: 10%;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(0, 102, 255, 0.1) 0%, transparent 70%);
    border-radius: 50%;
    filter: blur(60px);
    animation: float 25s ease-in-out infinite reverse;
}

@keyframes float {
    0%, 100% {
        transform: translate(0, 0);
    }
    50% {
        transform: translate(30px, -30px);
    }
}

.xr-hero-content {
    text-align: center;
    max-width: 900px;
    width: 100%;
    margin: 0 auto;
}

.xr-hero-title {
    font-size: var(--font-size-5xl);
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
    background: linear-gradient(135deg, var(--color-text-primary) 0%, var(--color-text-secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.xr-hero-subtitle {
    font-size: var(--font-size-xl);
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-xl);
    font-weight: 300;
    letter-spacing: 0.05em;
}

.xr-hero-buttons {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
}

/* 滚动提示 */
.xr-scroll-indicator {
    position: absolute;
    bottom: var(--spacing-xl);
    left: 50%;
    transform: translateX(-50%);
    color: var(--color-text-tertiary);
    animation: bounce 2s ease-in-out infinite;
}

.xr-scroll-indicator .xr-icon {
    width: 24px;
    height: 24px;
}

@keyframes bounce {
    0%, 100% {
        transform: translate(-50%, 0);
    }
    50% {
        transform: translate(-50%, 10px);
    }
}

/* ============================================
   按钮样式
   ============================================ */

.xr-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    padding: 0.875rem 2rem;
    font-size: var(--font-size-base);
    font-weight: 500;
    line-height: 1.5;
    text-decoration: none;
    border: 1px solid transparent;
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: all var(--transition-base);
    white-space: nowrap;
    position: relative;
    overflow: hidden;
    letter-spacing: 0.02em;
}

.xr-btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
    z-index: 0;
}

/* 确保按钮文字在伪元素上方 */
.xr-btn > * {
    position: relative;
    z-index: 1;
}

.xr-btn:hover::before {
    width: 300px;
    height: 300px;
}

.xr-btn-primary {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    color: white;
    box-shadow: 0 4px 20px rgba(0, 102, 255, 0.15);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.xr-btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(0, 102, 255, 0.25);
}

.xr-btn-secondary {
    background-color: var(--color-text-primary);
    color: var(--color-background);
    box-shadow: 0 4px 20px var(--color-shadow);
    border: 1px solid var(--color-text-primary);
}

.xr-btn-secondary:hover {
    background-color: var(--color-text-secondary);
    border-color: var(--color-text-secondary);
    transform: translateY(-3px);
    box-shadow: 0 8px 30px var(--color-shadow-lg);
}

.xr-btn-outline {
    background-color: transparent;
    color: var(--color-text-primary);
    border: 1px solid var(--color-border-hover);
    backdrop-filter: blur(10px);
}

.xr-btn-outline::before {
    background: var(--color-surface);
}

.xr-btn-outline:hover {
    color: var(--color-text-primary);
    border-color: var(--color-text-primary);
    transform: translateY(-3px);
    box-shadow: 0 8px 25px var(--color-shadow);
}

.xr-btn-lg {
    padding: 1.125rem 2.5rem;
    font-size: var(--font-size-lg);
    font-weight: 500;
}

/* ============================================
   区块标题样式
   ============================================ */

.xr-section-title {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    text-align: center;
    margin-bottom: var(--spacing-2xl);
    position: relative;
}

.xr-section-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 4px;
    background: linear-gradient(90deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    margin: var(--spacing-md) auto 0;
    border-radius: var(--radius-full);
}

/* ============================================
   服务项目区块
   ============================================ */

.xr-services {
    padding: var(--spacing-3xl) 0;
    background-color: var(--color-background);
}

.xr-services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
}

.xr-service-card {
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    text-align: center;
    transition: all var(--transition-base);
}

.xr-service-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 24px var(--color-shadow-lg);
    border-color: var(--color-primary);
}

.xr-service-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto var(--spacing-md);
    color: var(--color-primary);
    transition: transform var(--transition-base);
}

.xr-service-card:hover .xr-service-icon {
    transform: scale(1.1);
}

.xr-service-icon .xr-icon {
    width: 100%;
    height: 100%;
}

.xr-service-title {
    font-size: var(--font-size-xl);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--color-text-primary);
}

.xr-service-desc {
    color: var(--color-text-secondary);
    line-height: 1.7;
}

/* ============================================
   服务优势区块
   ============================================ */

.xr-advantages {
    padding: var(--spacing-3xl) 0;
    background-color: var(--color-background);
}

.xr-advantages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: var(--spacing-lg);
}

.xr-advantage-card {
    text-align: center;
    padding: var(--spacing-lg);
    transition: transform var(--transition-base);
}

.xr-advantage-card:hover {
    transform: scale(1.05);
}

.xr-advantage-icon {
    width: 56px;
    height: 56px;
    margin: 0 auto var(--spacing-md);
    color: var(--color-primary);
}

.xr-advantage-icon .xr-icon {
    width: 100%;
    height: 100%;
}

.xr-advantage-title {
    font-size: var(--font-size-xl);
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
    color: var(--color-text-primary);
}

.xr-advantage-desc {
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
}

/* ============================================
   常见问题区块
   ============================================ */

.xr-faq {
    padding: var(--spacing-3xl) 0;
    background-color: var(--color-surface);
}

.xr-faq-list {
    max-width: 860px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.xr-faq-item {
    background: var(--color-background);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    overflow: hidden;
    transition: border-color var(--transition-base), box-shadow var(--transition-base);
}

.xr-faq-item:hover,
.xr-faq-item.active {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-md);
}

.xr-faq-question {
    width: 100%;
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-lg) var(--spacing-xl);
    background: none;
    border: none;
    text-align: left;
    cursor: pointer;
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--color-text-primary);
    line-height: 1.5;
    font-family: inherit;
    -webkit-tap-highlight-color: transparent;
    transition: background var(--transition-fast), color var(--transition-fast);
}
.xr-faq-question > span { flex: 1; }
.xr-faq-question:hover { background: var(--color-surface); }
.xr-faq-item.active .xr-faq-question { color: var(--color-primary); background: var(--color-surface); }

.xr-faq-icon {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
    color: var(--color-text-tertiary);
    transition: transform var(--transition-base), color var(--transition-fast);
}

.xr-faq-item.active .xr-faq-icon {
    transform: rotate(180deg);
    color: var(--color-primary);
}

.xr-faq-answer {
    overflow: hidden;
}

.xr-faq-answer[hidden] { display: none; }

.xr-faq-answer p {
    padding: 0 var(--spacing-xl) var(--spacing-lg);
    color: var(--color-text-secondary);
    line-height: 1.8;
    font-size: var(--font-size-base);
    margin: 0;
    border-top: 1px solid var(--color-border);
    padding-top: var(--spacing-md);
}

/* ============================================
   合作伙伴区块
   ============================================ */

.xr-partners {
    padding: var(--spacing-3xl) 0;
    background-color: var(--color-background);
}

.xr-partners-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-2xl) var(--spacing-3xl);
}

.xr-partner-item {
    display: flex;
    align-items: center;
    justify-content: center;
    filter: grayscale(1);
    opacity: 0.45;
    transition: filter var(--transition-base), opacity var(--transition-base), transform var(--transition-base);
    flex-shrink: 0;
}

.xr-partner-item:hover {
    filter: grayscale(0);
    opacity: 1;
    transform: translateY(-2px);
}

.xr-partner-item img {
    height: 44px;
    width: auto;
    max-width: 140px;
    display: block;
    object-fit: contain;
}

@media (max-width: 768px) {
    .xr-partners-grid {
        gap: var(--spacing-xl) var(--spacing-2xl);
    }
    .xr-partner-item img {
        height: 36px;
        max-width: 110px;
    }
}

@media (max-width: 480px) {
    .xr-partners-grid {
        gap: var(--spacing-lg) var(--spacing-xl);
    }
    .xr-partner-item img {
        height: 30px;
        max-width: 90px;
    }
}

/* ============================================
   关于我们 & 加入我们区块
   ============================================ */

.xr-about,
.xr-join {
    padding: var(--spacing-3xl) 0;
}

.xr-about {
    background-color: var(--color-surface);
}

.xr-join {
    background-color: var(--color-background);
}

.xr-about-content,
.xr-join-content {
    max-width: 700px;
    margin: 0 auto;
    text-align: center;
}

.xr-about-text,
.xr-join-text {
    color: var(--color-text-secondary);
    font-size: var(--font-size-lg);
    line-height: 1.8;
    margin-bottom: var(--spacing-xl);
}

/* ============================================
   页脚区域
   ============================================ */

.xr-footer {
    background-color: #000000;
    color: #FFFFFF;
    padding: var(--spacing-3xl) 0 var(--spacing-lg);
}

.xr-footer-top {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: var(--spacing-2xl);
    padding-bottom: var(--spacing-2xl);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    margin-bottom: var(--spacing-lg);
}

.xr-footer-logo-section {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.xr-footer-logo-text {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    font-family: var(--font-family-mono);
    letter-spacing: 0.05em;
    margin-bottom: var(--spacing-xs);
    color: inherit;
    text-decoration: none;
    display: block;
}

.xr-footer-logo-img {
    height: 40px;
    width: auto;
    filter: invert(1) brightness(1.2);
    margin-bottom: var(--spacing-xs);
}

.xr-footer-description {
    color: rgba(255, 255, 255, 0.7);
    font-size: var(--font-size-sm);
    line-height: 1.7;
    max-width: 320px;
}

.xr-footer-columns {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-lg);
}

.xr-footer-column-title {
    font-size: var(--font-size-sm);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--spacing-md);
    color: #FFFFFF;
}

.xr-footer-links {
    list-style: none;
}

.xr-footer-links li {
    margin-bottom: var(--spacing-xs);
}

.xr-footer-links a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    font-size: var(--font-size-sm);
    transition: color var(--transition-fast);
}

.xr-footer-links a:hover {
    color: #FFFFFF;
}

/* Footer底部 */
.xr-footer-bottom {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: var(--spacing-xl);
    padding-top: var(--spacing-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    font-size: var(--font-size-sm);
}

.xr-footer-left {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.xr-footer-copyright {
    color: rgba(255, 255, 255, 0.6);
    line-height: 1.6;
}

.xr-footer-extra {
    color: rgba(255, 255, 255, 0.5);
    font-size: var(--font-size-xs);
    line-height: 1.6;
}

.xr-footer-extra a {
    color: rgba(255, 255, 255, 0.5);
    text-decoration: none;
    transition: color var(--transition-fast);
}
.xr-footer-extra a:visited {
    color: rgba(255, 255, 255, 0.5);
}
.xr-footer-extra a:hover {
    color: rgba(255, 255, 255, 0.8);
}

.xr-footer-copyright a {
    color: rgba(255, 255, 255, 0.6);
    text-decoration: none;
    transition: color var(--transition-fast);
}
.xr-footer-copyright a:visited {
    color: rgba(255, 255, 255, 0.6);
}
.xr-footer-copyright a:hover {
    color: #FFFFFF;
}

.xr-footer-right {
    display: flex;
    flex-direction: row;  /* 改为水平布局 */
    gap: var(--spacing-md);  /* 增加间距 */
    align-items: center;  /* 垂直居中对齐 */
}

.xr-footer-legal {
    display: flex;
    gap: var(--spacing-md);
    align-items: center;
}

.xr-footer-legal-link {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: color var(--transition-fast);
    font-size: var(--font-size-sm);
}

.xr-footer-legal-link:hover {
    color: #FFFFFF;
}

.xr-footer-legal-link .xr-icon {
    width: 16px;
    height: 16px;
}

/* ============================================
   主题切换器
   ============================================ */

.xr-theme-switcher {
    position: relative;
}

.xr-theme-btn {
    width: 40px;  /* 增大宽度，更清晰显示图标 */
    height: 40px;
    padding: 0;  /* 移除内边距 */
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: var(--radius-full);
    color: rgba(255, 255, 255, 0.9);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0;  /* 移除间距 */
    transition: all var(--transition-base);
    position: relative;  /* 为绝对定位的图标提供参考 */
}

.xr-theme-btn:hover {
    background: rgba(255, 255, 255, 0.15);
    border-color: rgba(255, 255, 255, 0.3);
}

.xr-theme-btn .xr-icon {
    width: 20px;  /* 增大图标尺寸 */
    height: 20px;
    flex-shrink: 0;
    position: absolute;  /* 绝对定位，确保图标重叠在同一位置 */
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.xr-theme-icon-sun,
.xr-theme-icon-moon,
.xr-theme-icon-auto {
    display: none !important;  /* 默认全部隐藏，使用 !important 确保优先级 */
}

[data-theme="light"] .xr-theme-icon-sun,
[data-theme="dark"] .xr-theme-icon-moon,
[data-theme="auto"] .xr-theme-icon-auto {
    display: block !important;  /* 只显示当前主题对应的图标 */
}

.xr-theme-label {
    display: none;  /* 完全隐藏文字标签，仅显示图标 */
}

.xr-theme-menu {
    position: absolute;
    bottom: calc(100% + 12px);
    right: 0;
    background-color: rgba(0, 0, 0, 0.95);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-lg);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
    padding: var(--spacing-xs);
    min-width: 150px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(8px);
    transition: all var(--transition-base);
    z-index: var(--z-dropdown);
}

.xr-theme-menu::before {
    content: '';
    position: absolute;
    bottom: -6px;
    right: 20px;
    width: 12px;
    height: 12px;
    background: rgba(0, 0, 0, 0.95);
    border-right: 1px solid rgba(255, 255, 255, 0.1);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    transform: rotate(45deg);
}

.xr-theme-menu.active {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.xr-theme-option {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    background: none;
    border: none;
    border-radius: var(--radius-md);
    color: rgba(255, 255, 255, 0.8);
    cursor: pointer;
    font-size: var(--font-size-sm);
    text-align: left;
    transition: all var(--transition-fast);
}

.xr-theme-option:hover {
    background-color: rgba(255, 255, 255, 0.1);
    color: #FFFFFF;
}

.xr-theme-option.active {
    background-color: rgba(0, 102, 255, 0.2);
    color: #FFFFFF;
}

.xr-theme-option .xr-icon {
    width: 16px;
    height: 16px;
    flex-shrink: 0;
}

/* ============================================
   返回顶部按钮
   ============================================ */

.xr-back-to-top {
    position: fixed;
    bottom: var(--spacing-lg);
    right: var(--spacing-lg);
    width: 48px;
    height: 48px;
    background-color: var(--color-primary);
    color: white;
    border: none;
    border-radius: var(--radius-full);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 12px rgba(0, 102, 255, 0.3);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all var(--transition-base);
    z-index: var(--z-fixed);
}

.xr-back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.xr-back-to-top:hover {
    background-color: var(--color-primary-dark);
    transform: translateY(-4px);
    box-shadow: 0 6px 16px rgba(0, 102, 255, 0.4);
}

.xr-back-to-top .xr-icon {
    width: 20px;
    height: 20px;
}

/* ============================================
   模态弹窗
   ============================================ */

.xr-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: var(--z-modal);
    display: none;
}

.xr-modal.active {
    display: block;
}

.xr-modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    animation: fadeIn var(--transition-base);
}

.xr-modal-content {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 90%;
    max-width: 600px;
    max-height: 80vh;
    background-color: var(--color-background);
    border-radius: var(--radius-xl);
    box-shadow: 0 20px 60px var(--color-shadow-lg);
    display: flex;
    flex-direction: column;
    animation: slideUp var(--transition-base);
    z-index: 1;
}

@media (max-width: 600px) {
    .xr-modal-content {
        top: auto;
        bottom: 0;
        left: 0;
        transform: none;
        width: 100%;
        max-width: 100%;
        max-height: 85vh;
        border-radius: var(--radius-xl) var(--radius-xl) 0 0;
        animation: slideUpMobile var(--transition-base);
    }
    @keyframes slideUpMobile {
        from { transform: translateY(100%); }
        to   { transform: translateY(0); }
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translate(-50%, -45%);
    }
    to {
        opacity: 1;
        transform: translate(-50%, -50%);
    }
}

.xr-modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--color-border);
}

.xr-modal-header h3 {
    font-size: var(--font-size-xl);
    font-weight: 600;
}

.xr-modal-close {
    width: 32px;
    height: 32px;
    background: none;
    border: none;
    color: var(--color-text-tertiary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.xr-modal-close:hover {
    background-color: var(--color-surface);
    color: var(--color-text-primary);
}

.xr-modal-close .xr-icon {
    width: 20px;
    height: 20px;
}

.xr-modal-body {
    padding: var(--spacing-lg);
    overflow-y: auto;
    color: var(--color-text-secondary);
    line-height: 1.8;
}

/* ============================================
   博客文章列表
   ============================================ */

.xr-blog-list {
    padding: calc(72px + var(--spacing-3xl)) 0 var(--spacing-3xl);
}

.xr-posts-grid {
    display: grid;
    gap: var(--spacing-xl);
}

.xr-post-card {
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    transition: all var(--transition-base);
}

.xr-post-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 24px var(--color-shadow-lg);
    border-color: var(--color-primary);
}

.xr-post-meta {
    display: flex;
    gap: var(--spacing-sm);
    font-size: var(--font-size-sm);
    color: var(--color-text-tertiary);
    margin-bottom: var(--spacing-sm);
}

.xr-post-title {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
}

.xr-post-title a {
    color: var(--color-text-primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.xr-post-title a:hover {
    color: var(--color-primary);
}

.xr-post-excerpt {
    color: var(--color-text-secondary);
    line-height: 1.7;
    margin-bottom: var(--spacing-md);
}

.xr-post-read-more {
    color: var(--color-primary);
    text-decoration: none;
    font-weight: 600;
    font-size: var(--font-size-sm);
    transition: color var(--transition-fast);
}

.xr-post-read-more:hover {
    color: var(--color-primary-dark);
}

/* ============================================
   文章详情页
   ============================================ */

.xr-article {
    padding: calc(72px + var(--spacing-3xl)) 0 var(--spacing-lg);
}

.xr-article-header {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
}

.xr-article-title {
    font-size: var(--font-size-4xl);
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
}

.xr-article-meta {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-sm);
    color: var(--color-text-tertiary);
}

.xr-meta-separator {
    color: var(--color-border);
}

.xr-article-body {
    font-size: var(--font-size-lg);
    line-height: 1.8;
    color: var(--color-text-secondary);
}

.xr-article-body h2,
.xr-article-body h3,
.xr-article-body h4 {
    color: var(--color-text-primary);
    font-weight: 700;
    margin-top: var(--spacing-xl);
    margin-bottom: var(--spacing-md);
}

.xr-article-body h2 {
    font-size: var(--font-size-3xl);
}

.xr-article-body h3 {
    font-size: var(--font-size-2xl);
}

.xr-article-body p {
    margin-bottom: var(--spacing-md);
}

.xr-article-body a {
    color: var(--color-primary);
    text-decoration: underline;
    transition: color var(--transition-fast);
}

.xr-article-body a:hover {
    color: var(--color-primary-dark);
}

.xr-article-body img {
    max-width: 100%;
    height: auto;
    border-radius: var(--radius-lg);
    margin: var(--spacing-lg) 0;
}

.xr-article-body code {
    background-color: var(--color-surface);
    padding: 0.2em 0.4em;
    border-radius: var(--radius-sm);
    font-family: var(--font-family-mono);
    font-size: 0.9em;
}

.xr-article-body pre {
    background-color: var(--color-surface);
    padding: var(--spacing-md);
    border-radius: var(--radius-lg);
    overflow-x: auto;
    margin: var(--spacing-lg) 0;
}

.xr-article-body pre code {
    background: none;
    padding: 0;
}

.xr-article-tags {
    margin-top: var(--spacing-xl);
    padding-top: var(--spacing-xl);
    border-top: 1px solid var(--color-border);
}

.xr-article-nav {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-2xl);
    padding-top: var(--spacing-2xl);
    border-top: 1px solid var(--color-border);
}

.xr-article-nav-prev,
.xr-article-nav-next {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
    padding: var(--spacing-md);
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    text-decoration: none;
    transition: all var(--transition-base);
}

.xr-article-nav-prev:hover,
.xr-article-nav-next:hover {
    border-color: var(--color-primary);
    box-shadow: 0 4px 12px var(--color-shadow);
}

.xr-article-nav-label {
    font-size: var(--font-size-sm);
    color: var(--color-text-tertiary);
}

.xr-article-nav-title {
    color: var(--color-text-primary);
    font-weight: 600;
}

/* ============================================
   相关文章
   ============================================ */

.xr-related-posts {
    margin-top: var(--spacing-2xl);
    padding-top: var(--spacing-2xl);
    border-top: 1px solid var(--color-border);
}

.xr-related-title {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-lg);
}

.xr-related-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
}

.xr-related-card {
    display: flex;
    flex-direction: column;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    text-decoration: none;
    overflow: hidden;
    transition: all var(--transition-base);
}

.xr-related-card:hover {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-md);
    transform: translateY(-4px);
}

.xr-related-cover {
    width: 100%;
    aspect-ratio: 16 / 9;
    overflow: hidden;
    background: var(--color-border);
}

.xr-related-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-base);
    display: block;
}

.xr-related-card:hover .xr-related-cover img {
    transform: scale(1.05);
}

.xr-related-info {
    padding: var(--spacing-md);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
    flex: 1;
}

.xr-related-post-title {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--color-text-primary);
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    margin: 0;
}

.xr-related-date {
    font-size: var(--font-size-xs);
    color: var(--color-text-tertiary);
    margin-top: auto;
}

/* ============================================
   响应式设计
   ============================================ */

@media (max-width: 1024px) {
    .xr-footer-columns {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .xr-header-inner {
        height: 64px;
    }

    /* 移动端菜单 */
    .xr-nav {
        display: none;
        position: fixed;
        top: 0;
        left: 0;
        width: 80%;
        max-width: 320px;
        height: 100vh;
        background: var(--color-background);
        z-index: calc(var(--z-fixed) + 10);
        overflow-y: auto;
        -webkit-overflow-scrolling: touch;
        box-shadow: 4px 0 24px rgba(0,0,0,0.15);
        transform: translateX(-100%);
        transition: transform var(--transition-base);
    }
    .xr-nav.active {
        display: block;
        transform: translateX(0);
    }
    .xr-nav-list {
        display: flex;
        flex-direction: column;
        align-items: stretch;
        padding: 80px 0 var(--spacing-xl);
        list-style: none;
        gap: 0;
    }
    .xr-nav-item {
        border-bottom: 1px solid var(--color-border);
    }
    .xr-nav-item:last-child { border-bottom: none; }
    .xr-nav-link {
        display: block;
        padding: 14px 24px;
        color: var(--color-text-primary);
        font-size: var(--font-size-base);
        font-weight: 500;
    }
    .xr-nav-link::after { display: none; }
    .xr-nav-link:hover, .xr-nav-link.active {
        background: var(--color-surface);
        color: var(--color-primary);
    }
    /* 汉堡按钮保持在右侧（nav 在移动端 display:none，需重新推到最右） */
    .xr-header-actions {
        margin-left: auto;
    }
    /* 移动端下拉：内联展开，不浮动 */
    .xr-nav-arrow { display: none; }
    .xr-nav-dropdown {
        position: static;
        transform: none !important;
        opacity: 1;
        visibility: visible;
        box-shadow: none;
        border: none;
        border-radius: 0;
        padding: 0;
        background: transparent;
        pointer-events: auto;
    }
    .xr-nav-dropdown::before,
    .xr-nav-dropdown::after { display: none; }
    .xr-nav-dropdown li { border-bottom: 1px solid var(--color-border); }
    .xr-nav-dropdown li:last-child { border-bottom: none; }
    .xr-nav-dropdown-link {
        padding: 11px 24px 11px 40px;
        color: var(--color-text-tertiary);
        font-size: var(--font-size-sm);
    }
    .xr-nav-dropdown-link:hover {
        background: var(--color-surface);
        color: var(--color-primary);
    }
    .xr-mobile-menu-btn {
        display: flex;
    }

    .xr-mobile-menu-overlay {
        display: block;
        top: 0;
        height: 100vh;
    }

    .xr-hero {
        min-height: 80vh;
        margin-top: 64px;
    }

    .xr-hero-title {
        font-size: var(--font-size-4xl);
    }

    .xr-hero-subtitle {
        font-size: var(--font-size-lg);
    }

    .xr-hero-content {
        display: flex;
        flex-direction: column;
        align-items: center;
        text-align: center;
    }

    .xr-hero-buttons {
        flex-direction: column;
        width: 100%;
        align-items: center;
        gap: var(--spacing-sm);
    }

    /* 移动端按钮优化 - 适中大小、居中对齐 */
    .xr-btn-lg {
        padding: 0.875rem 1.5rem;
        font-size: var(--font-size-base);
        width: auto;
        min-width: 200px;
        max-width: 280px;
    }

    .xr-section-title {
        font-size: var(--font-size-2xl);
    }

    .xr-services-grid,
    .xr-advantages-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }

    /* 移动端优势区块添加边框 */
    .xr-advantage-card {
        background-color: var(--color-surface);
        padding: var(--spacing-xl);
        border-radius: var(--radius-xl);
        border: 1px solid var(--color-border);
        transition: all var(--transition-base);
    }

    .xr-advantage-card:hover {
        transform: translateY(-4px);
        box-shadow: 0 8px 20px var(--color-shadow);
        border-color: var(--color-primary);
    }

    .xr-footer-top {
        grid-template-columns: 1fr;
    }

    .xr-footer-columns {
        grid-template-columns: 1fr;
    }

    /* 移动端手风琴式Footer */
    .xr-footer-column {
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        padding: var(--spacing-xs) 0; /* 减少高度：从md改为xs */
    }

    .xr-footer-column-title {
        cursor: pointer;
        position: relative;
        padding: var(--spacing-xs) var(--spacing-md) var(--spacing-xs) 0;
        user-select: none;
        -webkit-user-select: none;
        touch-action: manipulation;
        -webkit-tap-highlight-color: transparent;
        margin-bottom: 0;
        display: flex;
        align-items: center;
        justify-content: space-between;
        min-height: 48px;
    }

    .xr-footer-column-title::after {
        content: '+';
        font-size: var(--font-size-lg); /* 减小图标大小：从xl改为lg */
        line-height: 1;
        transition: transform var(--transition-base);
        flex-shrink: 0;
    }

    .xr-footer-column.active .xr-footer-column-title::after {
        content: '−';
    }

    .xr-footer-links {
        max-height: 0;
        overflow: hidden;
        transition: max-height var(--transition-slow);
    }

    .xr-footer-column.active .xr-footer-links {
        max-height: 300px;
        margin-top: var(--spacing-sm);
    }

    .xr-footer-bottom {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }

    .xr-footer-left,
    .xr-footer-right {
        align-items: center;
        text-align: center;
    }

    .xr-footer-right {
        flex-direction: row;  /* 移动端也保持水平布局 */
        justify-content: center;  /* 居中显示 */
    }

    .xr-footer-legal {
        justify-content: center;
        flex-wrap: wrap;
    }

    .xr-article-title {
        font-size: var(--font-size-3xl);
    }
}

@media (max-width: 480px) {
    :root {
        --spacing-lg: 1rem;
        --spacing-xl: 2rem;
        --spacing-2xl: 3rem;
        --spacing-3xl: 4rem;
    }

    .xr-container {
        padding: 0 var(--spacing-md);
    }

    .xr-hero-title {
        font-size: var(--font-size-3xl);
    }

    .xr-back-to-top {
        bottom: var(--spacing-md);
        right: var(--spacing-md);
        width: 40px;
        height: 40px;
    }

    .xr-related-grid {
        grid-template-columns: 1fr;
    }
}

/* ============================================
   AOS动画库兼容性
   ============================================ */

[data-aos] {
    opacity: 0;
    transition-property: opacity, transform;
}

[data-aos].aos-animate {
    opacity: 1;
}

[data-aos="fade-up"] {
    transform: translateY(30px);
}

[data-aos="fade-up"].aos-animate {
    transform: translateY(0);
}

[data-aos="fade-left"] {
    transform: translateX(30px);
}

[data-aos="fade-left"].aos-animate {
    transform: translateX(0);
}

[data-aos="fade-right"] {
    transform: translateX(-30px);
}

[data-aos="fade-right"].aos-animate {
    transform: translateX(0);
}

[data-aos="zoom-in"] {
    transform: scale(0.9);
}

[data-aos="zoom-in"].aos-animate {
    transform: scale(1);
}

/* ============================================
   工具类
   ============================================ */

.xr-icon {
    display: inline-block;
    width: 1em;
    height: 1em;
    fill: currentColor;
}

/* ============================================
   评论区样式
   ============================================ */

.xr-comments-section {
    margin-top: var(--spacing-xl);
    padding-top: var(--spacing-xl);
    border-top: 1px solid var(--color-border);
}

.xr-comments-title {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    margin-bottom: var(--spacing-xl);
    color: var(--color-text-primary);
}

/* 评论表单 */
.xr-comment-form-wrapper {
    margin-bottom: var(--spacing-2xl);
}

.xr-comment-form {
    background: var(--color-surface);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
}

.xr-comment-textarea {
    width: 100%;
    min-height: 120px;
    padding: var(--spacing-md);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    font-size: var(--font-size-base);
    font-family: inherit;
    background: var(--color-background);
    color: var(--color-text-primary);
    resize: vertical;
    transition: all var(--transition-base);
}

.xr-comment-textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(0, 102, 255, 0.1);
}

.xr-comment-info {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
    margin-top: var(--spacing-md);
}

.xr-comment-input {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    font-size: var(--font-size-base);
    background: var(--color-background);
    color: var(--color-text-primary);
    transition: all var(--transition-base);
}

.xr-comment-input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(0, 102, 255, 0.1);
}

.xr-comment-submit {
    margin-top: var(--spacing-md);
    display: flex;
    justify-content: flex-end;
}

/* 评论列表 */
.xr-comments-list {
    margin-top: var(--spacing-xl);
}

.xr-comment-header {
    margin-bottom: var(--spacing-lg);
    color: var(--color-text-secondary);
    font-size: var(--font-size-base);
}

.xr-comment {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-lg);
    border-bottom: 1px solid var(--color-border);
}

.xr-comment:last-child {
    border-bottom: none;
}

.xr-comment-avatar img {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    object-fit: cover;
}

.xr-comment-body {
    flex: 1;
}

.xr-comment-meta {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
}

.xr-comment-meta strong {
    color: var(--color-text-primary);
    font-size: var(--font-size-base);
}

.xr-comment-time {
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
}

.xr-comment-content {
    color: var(--color-text-primary);
    font-size: var(--font-size-base);
    line-height: 1.6;
    margin-bottom: var(--spacing-sm);
}

.xr-comment-reply {
    display: flex;
    gap: var(--spacing-sm);
}

.xr-reply-btn {
    color: var(--color-primary);
    font-size: var(--font-size-sm);
    cursor: pointer;
    transition: color var(--transition-base);
}

.xr-reply-btn:hover {
    color: var(--color-primary-dark);
}

/* 子评论 */
.xr-comment-child {
    margin-left: 60px;
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--color-border);
    border-bottom: none;
}

.xr-comment-child .xr-comment-avatar img {
    width: 40px;
    height: 40px;
}

/* 分页 */
.xr-pagination {
    margin-top: var(--spacing-xl);
    text-align: center;
}

.xr-pagination a {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-md);
    margin: 0 var(--spacing-xs);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text-primary);
    text-decoration: none;
    transition: all var(--transition-base);
}

.xr-pagination a:hover {
    background: var(--color-primary);
    color: white;
    border-color: var(--color-primary);
}

/* 模态框底部操作区 */
.xr-modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-lg);
    border-top: 1px solid var(--color-border);
}

/* 响应式 */
@media (max-width: 768px) {
    .xr-comment-info {
        grid-template-columns: 1fr;
    }

    .xr-comment-child {
        margin-left: 30px;
    }

    .xr-comment-avatar img {
        width: 40px !important;
        height: 40px !important;
    }

    .xr-comment-child .xr-comment-avatar img {
        width: 32px !important;
        height: 32px !important;
    }
}

/* ============================================
   滚动提示（首页）
   ============================================ */
.xr-scroll-hint {
    position: absolute;
    bottom: var(--spacing-xl);
    left: 50%;
    transform: translateX(-50%);
    color: var(--color-text-tertiary);
    animation: bounce 2s ease-in-out infinite;
}
.xr-scroll-hint .xr-icon { width: 24px; height: 24px; }

/* ============================================
   区块头部（标题+副标题）
   ============================================ */
.xr-section-header {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
}
.xr-section-subtitle {
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
    margin-top: calc(-1 * var(--spacing-sm));
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* ============================================
   服务卡片（链接型）
   ============================================ */
a.xr-service-card {
    display: block;
    color: inherit;
    text-decoration: none;
}
.xr-service-more {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    margin-top: var(--spacing-sm);
    font-size: var(--font-size-sm);
    color: var(--color-primary);
    font-weight: 500;
}

/* ============================================
   关于我们区块（含统计数字）
   ============================================ */
.xr-about-inner {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2xl);
    align-items: center;
}
.xr-about-content { /* 桌面端左列居中对齐，与标题、正文、按钮保持一致 */
    text-align: center;
    max-width: none;
    margin: 0;
}
.xr-about-stats {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-lg);
}
.xr-stat-item {
    background: var(--color-background);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    text-align: center;
    transition: all var(--transition-base);
}
.xr-stat-item:hover {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-md);
    transform: translateY(-4px);
}
.xr-stat-num {
    display: block;
    font-size: var(--font-size-4xl);
    font-weight: 800;
    color: var(--color-primary);
    line-height: 1;
    margin-bottom: var(--spacing-xs);
}
.xr-stat-label {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}
.xr-join-inner {
    max-width: 700px;
    margin: 0 auto;
    text-align: center;
}
.xr-join-text {
    color: var(--color-text-secondary);
    font-size: var(--font-size-lg);
    line-height: 1.8;
    margin-bottom: var(--spacing-xl);
}
@media (max-width: 768px) {
    .xr-about-inner {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }
    .xr-about-content { text-align: center; }
    .xr-about-stats { grid-template-columns: repeat(2, 1fr); gap: var(--spacing-md); }
    .xr-stat-num { font-size: var(--font-size-3xl); }
}

/* ============================================
   内页 Hero（子页面）
   ============================================ */
.xr-inner-hero {
    padding: 140px 0 60px;
    background: var(--color-surface);
    position: relative;
    overflow: hidden;
}
.xr-inner-hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(0,102,255,0.06) 0%, transparent 60%);
    pointer-events: none;
}
.xr-inner-hero-content {
    position: relative;
    text-align: center;
    max-width: 700px;
    margin: 0 auto;
}
.xr-inner-hero-title {
    font-size: clamp(1.75rem, 5vw, 2.75rem);
    font-weight: 800;
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-md);
    line-height: 1.25;
}
.xr-inner-hero-desc {
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
    line-height: 1.7;
}
@media (max-width: 768px) {
    .xr-inner-hero { padding: 100px 0 50px; }
}

/* ============================================
   文章/页面详情通用
   ============================================ */
.xr-article-page {
    padding-top: 72px;
    min-height: 60vh;
}
.xr-page-wrap {
    padding-top: 0;
}
.xr-page-article {
    padding: var(--spacing-2xl) 0;
}
.xr-about-article {
    max-width: 900px;
    margin: var(--spacing-2xl) auto;
    background: var(--color-surface);
    border-radius: var(--radius-xl);
    padding: var(--spacing-2xl);
    box-shadow: var(--shadow-sm);
}
.xr-about-cover {
    margin-bottom: var(--spacing-xl);
    border-radius: var(--radius-lg);
    overflow: hidden;
}
.xr-about-cover img {
    width: 100%;
    height: auto;
    display: block;
}
.xr-page-meta {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    padding-top: var(--spacing-lg);
    margin-top: var(--spacing-xl);
    border-top: 1px solid var(--color-border);
    font-size: var(--font-size-sm);
    color: var(--color-text-tertiary);
}
/* 关于页面 meta 移动端左对齐 */
@media (max-width: 768px) {
    .xr-page-meta {
        justify-content: flex-start;
        flex-wrap: wrap;
        gap: var(--spacing-md);
    }
}

/* 面包屑 */
.xr-breadcrumb {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: var(--font-size-sm);
    color: var(--color-text-tertiary);
    padding: var(--spacing-md) 0;
    flex-wrap: wrap;
}
.xr-breadcrumb a {
    color: var(--color-text-secondary);
    text-decoration: none;
    transition: color var(--transition-fast);
}
.xr-breadcrumb a:hover { color: var(--color-primary); }
.xr-breadcrumb-sep { color: var(--color-border-hover); }
/* 上下篇导航（新版） */
.xr-article-nav {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
    margin-top: var(--spacing-2xl);
    padding-top: var(--spacing-xl);
    border-top: 1px solid var(--color-border);
}
.xr-article-nav-link {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) 0;
    text-decoration: none;
    transition: opacity var(--transition-base);
    min-width: 0;
}
.xr-article-nav-link:hover {
    opacity: 0.7;
}
.xr-nav-next { text-align: right; }
.xr-nav-dir {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: var(--font-size-xs);
    color: var(--color-text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}
.xr-nav-next .xr-nav-dir { justify-content: flex-end; }
.xr-nav-title {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--color-text-primary);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
@media (max-width: 600px) {
    .xr-article-nav { grid-template-columns: 1fr; }
    .xr-nav-next { text-align: left; }
    .xr-nav-next .xr-nav-dir { justify-content: flex-start; }
}

/* ============================================
   文章内容排版
   ============================================ */
.xr-article-body {
    font-size: var(--font-size-lg);
    line-height: 1.85;
    color: var(--color-text-secondary);
}
.xr-article-body > *:first-child { margin-top: 0; }
.xr-article-body h1,.xr-article-body h2,.xr-article-body h3,
.xr-article-body h4,.xr-article-body h5,.xr-article-body h6 {
    color: var(--color-text-primary);
    font-weight: 700;
    line-height: 1.4;
    margin: var(--spacing-xl) 0 var(--spacing-md);
}
.xr-article-body h2 { font-size: var(--font-size-3xl); }
.xr-article-body h3 { font-size: var(--font-size-2xl); }
.xr-article-body h4 { font-size: var(--font-size-xl); }
.xr-article-body p  { margin-bottom: var(--spacing-md); }
.xr-article-body a  { color: var(--color-primary); text-decoration: underline; }
.xr-article-body a:hover { color: var(--color-primary-dark); }
.xr-article-body img {
    max-width: 100%; height: auto;
    border-radius: var(--radius-lg);
    margin: var(--spacing-lg) 0; display: block;
}
.xr-article-body ul,.xr-article-body ol {
    margin-bottom: var(--spacing-md);
    padding-left: var(--spacing-xl);
}
.xr-article-body li { margin-bottom: var(--spacing-xs); }
.xr-article-body blockquote {
    border-left: 4px solid var(--color-primary);
    padding: var(--spacing-md) var(--spacing-lg);
    margin: var(--spacing-lg) 0;
    background: var(--color-surface);
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
    color: var(--color-text-secondary);
    font-style: italic;
}
.xr-article-body pre {
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    overflow-x: auto;
    margin: var(--spacing-lg) 0;
    border: 1px solid var(--color-border);
}
.xr-article-body code {
    background: var(--color-surface);
    padding: 2px 6px;
    border-radius: var(--radius-sm);
    font-family: var(--font-family-mono);
    font-size: 0.9em;
    border: 1px solid var(--color-border);
}
.xr-article-body pre code { background: none; border: none; padding: 0; }
.xr-article-body table {
    width: 100%; border-collapse: collapse;
    margin: var(--spacing-lg) 0; overflow-x: auto; display: block;
}
.xr-article-body th,.xr-article-body td {
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--color-border);
    text-align: left;
}
.xr-article-body th { background: var(--color-surface); font-weight: 600; }
/* 文章标签 */
.xr-article-tags {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    flex-wrap: wrap;
    margin-top: var(--spacing-2xl);
    padding-top: var(--spacing-xl);
    border-top: 1px solid var(--color-border);
}
.xr-tag {
    display: inline-block;
    padding: 4px 12px;
    background: var(--color-surface);
    color: var(--color-text-secondary);
    text-decoration: none;
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    border: 1px solid var(--color-border);
    transition: all var(--transition-fast);
}
.xr-tag:hover { background: var(--color-primary); color: white; border-color: var(--color-primary); }

/* ============================================
   评论系统（改进版）
   ============================================ */
.xr-comment-form-title {
    font-size: var(--font-size-xl);
    font-weight: 700;
    margin-bottom: var(--spacing-lg);
    color: var(--color-text-primary);
}
.xr-comment-fields {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}
.xr-input, .xr-textarea {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    font-size: var(--font-size-base);
    font-family: inherit;
    background: var(--color-background);
    color: var(--color-text-primary);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}
.xr-input:focus, .xr-textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(0,102,255,0.10);
}
.xr-textarea {
    min-height: 130px;
    resize: vertical;
    margin-bottom: var(--spacing-md);
    display: block;
}
.xr-comment-submit-row {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}
.xr-login-tip { color: var(--color-text-secondary); font-size: var(--font-size-sm); }
.xr-login-tip a { color: var(--color-primary); }
.xr-reply-btn {
    background: none;
    border: none;
    color: var(--color-primary);
    cursor: pointer;
    font-size: var(--font-size-sm);
    padding: 0;
    transition: opacity var(--transition-fast);
}
.xr-reply-btn:hover { opacity: 0.75; }
.xr-comment-author { color: var(--color-text-primary); }
.xr-comment-children { padding-left: var(--spacing-xl); margin-top: var(--spacing-md); }
@media (max-width: 600px) {
    .xr-comment-fields { grid-template-columns: 1fr; }
    .xr-comment-children { padding-left: var(--spacing-md); }
}

/* ============================================
   新闻列表（从内联CSS移入）
   ============================================ */
.xr-list-page { padding: var(--spacing-2xl) 0 var(--spacing-3xl); }
.xr-news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-2xl);
}
.xr-news-card {
    background: var(--color-surface);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: all 0.3s var(--transition-smooth);
    display: flex;
    flex-direction: column;
    border: 1px solid var(--color-border);
}
.xr-news-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
    border-color: var(--color-primary);
}
.xr-news-card-cover {
    position: relative;
    width: 100%;
    padding-top: 56.25%;
    overflow: hidden;
    background: var(--color-surface-hover);
}
.xr-news-card-cover a {
    position: absolute; inset: 0;
}
.xr-news-card-cover img {
    width: 100%; height: 100%; object-fit: cover;
    transition: transform 0.4s var(--transition-smooth);
}
.xr-news-card:hover .xr-news-card-cover img { transform: scale(1.05); }
.xr-badge {
    position: absolute;
    top: var(--spacing-sm);
    right: var(--spacing-sm);
    padding: 4px 10px;
    background: var(--color-primary);
    color: white;
    font-size: var(--font-size-xs);
    font-weight: 600;
    border-radius: var(--radius-full);
    z-index: 1;
}
.xr-badge-featured { background: linear-gradient(135deg, #FF6B35, #F7931E); }
.xr-news-card-body {
    padding: var(--spacing-lg);
    flex: 1;
    display: flex;
    flex-direction: column;
}
.xr-news-card-meta {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
    font-size: var(--font-size-xs);
    color: var(--color-text-tertiary);
}
.xr-news-card-meta > * {
    display: flex;
    align-items: center;
    gap: 4px;
}
.xr-news-card-title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    line-height: 1.4;
    margin-bottom: var(--spacing-sm);
}
.xr-news-card-title a {
    color: var(--color-text-primary);
    text-decoration: none;
    transition: color 0.2s;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.xr-news-card-title a:hover { color: var(--color-primary); }
.xr-news-card-excerpt {
    color: var(--color-text-secondary);
    line-height: 1.6;
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-md);
    flex: 1;
}
.xr-card-link {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    color: var(--color-primary);
    text-decoration: none;
    font-weight: 500;
    font-size: var(--font-size-sm);
    margin-top: auto;
    transition: gap 0.2s;
}
.xr-card-link:hover { gap: var(--spacing-xs); }
.xr-icon-xs { width: 14px !important; height: 14px !important; }
.xr-icon-sm { width: 16px !important; height: 16px !important; }
.xr-icon-xl { width: 64px !important; height: 64px !important; }
.xr-empty-state {
    text-align: center;
    padding: var(--spacing-3xl);
    color: var(--color-text-tertiary);
}
.xr-empty-state p { font-size: var(--font-size-lg); margin-top: var(--spacing-md); }
@media (max-width: 768px) {
    .xr-news-grid { grid-template-columns: 1fr; gap: var(--spacing-lg); }
}

/* ============================================
   作品集
   ============================================ */
.xr-works-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-2xl);
}
.xr-work-card {
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: all 0.35s var(--transition-smooth);
    border: 1px solid var(--color-border);
}
.xr-work-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-6px);
}
.xr-work-card-inner { display: block; text-decoration: none; color: inherit; }
.xr-work-card-cover {
    position: relative;
    width: 100%;
    padding-top: 66.67%; /* 3:2 */
    overflow: hidden;
    background: var(--color-surface);
}
.xr-work-card-cover img {
    position: absolute; inset: 0;
    width: 100%; height: 100%;
    object-fit: cover;
    transition: transform 0.4s var(--transition-smooth);
}
.xr-work-card:hover .xr-work-card-cover img { transform: scale(1.08); }
.xr-work-card-placeholder {
    position: absolute; inset: 0;
    display: flex; align-items: center; justify-content: center;
    color: var(--color-border-hover);
}
.xr-work-card-overlay {
    position: absolute; inset: 0;
    background: rgba(0,0,0,0.45);
    display: flex; align-items: center; justify-content: center;
    opacity: 0;
    transition: opacity 0.3s;
}
.xr-work-card:hover .xr-work-card-overlay { opacity: 1; }
.xr-work-view-btn {
    display: flex; align-items: center; gap: 6px;
    padding: var(--spacing-sm) var(--spacing-lg);
    background: white;
    color: #111;
    font-weight: 600;
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
}
.xr-work-card-info {
    padding: var(--spacing-lg);
    background: var(--color-surface);
}
.xr-work-card-title {
    font-size: var(--font-size-lg);
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
    color: var(--color-text-primary);
}
.xr-work-card-desc {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    line-height: 1.6;
}
/* 作品详情 */
.xr-work-page .xr-container { max-width: 1100px; }
.xr-work-detail-layout { margin: var(--spacing-xl) 0; }
.xr-work-detail-cover {
    border-radius: var(--radius-xl);
    overflow: hidden;
    margin-bottom: var(--spacing-2xl);
    box-shadow: var(--shadow-lg);
}
.xr-work-detail-cover img { width: 100%; height: auto; display: block; }
@media (max-width: 768px) {
    .xr-works-grid { grid-template-columns: 1fr; }
}

/* ============================================
   联系页面
   ============================================ */
.xr-contact-layout {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: var(--spacing-2xl);
    padding: var(--spacing-2xl) 0;
    align-items: start;
}
.xr-contact-info-title, .xr-contact-form-title {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    margin-bottom: var(--spacing-xl);
    color: var(--color-text-primary);
}
.xr-contact-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}
.xr-contact-item {
    display: flex;
    gap: var(--spacing-md);
    align-items: flex-start;
}
.xr-contact-icon {
    width: 44px;
    height: 44px;
    border-radius: var(--radius-lg);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-primary);
    flex-shrink: 0;
}
.xr-contact-icon .xr-icon { width: 20px; height: 20px; }
.xr-contact-detail {
    display: flex;
    flex-direction: column;
    gap: 2px;
}
.xr-contact-label {
    font-size: var(--font-size-xs);
    color: var(--color-text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.06em;
}
.xr-contact-value {
    font-size: var(--font-size-base);
    color: var(--color-text-primary);
    text-decoration: none;
    background: none;
    border: none;
    padding: 0;
    cursor: pointer;
    font-family: inherit;
    transition: color var(--transition-fast);
}
a.xr-contact-value:hover, .xr-wechat-trigger:hover { color: var(--color-primary); }
.xr-qr-hint { font-size: var(--font-size-xs); color: var(--color-primary); margin-left: 4px; }
.xr-contact-extra { margin-top: var(--spacing-2xl); }
.xr-contact-no-form {
    padding: var(--spacing-2xl);
    background: var(--color-surface);
    border-radius: var(--radius-xl);
    border: 1px solid var(--color-border);
    text-align: center;
    color: var(--color-text-secondary);
}
.xr-modal-sm .xr-modal-content { max-width: 320px; }
@media (max-width: 768px) {
    .xr-contact-layout { grid-template-columns: 1fr; }
}

/* ============================================
   CTA 区块
   ============================================ */
.xr-cta-section { margin: var(--spacing-2xl) 0; }
/* 关于页：CTA 宽度与正文内容卡片一致 */
.xr-cta-section--article { max-width: 900px; margin-left: auto; margin-right: auto; }
.xr-cta-card {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    border-radius: var(--radius-xl);
    padding: var(--spacing-3xl) var(--spacing-2xl);
    text-align: center;
    color: white;
    position: relative;
    overflow: hidden;
}
.xr-cta-card::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 400px;
    height: 400px;
    background: rgba(255,255,255,0.06);
    border-radius: 50%;
    pointer-events: none;
}
.xr-cta-title {
    font-size: clamp(1.5rem, 4vw, 2.25rem);
    font-weight: 800;
    margin-bottom: var(--spacing-md);
}
.xr-cta-desc {
    font-size: var(--font-size-lg);
    opacity: 0.85;
    margin-bottom: var(--spacing-xl);
}
.xr-cta-buttons {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
}
.xr-btn-white {
    background: white;
    color: var(--color-primary);
    border: none;
}
.xr-btn-white:hover {
    background: rgba(255,255,255,0.9);
    transform: translateY(-3px);
    box-shadow: 0 8px 24px rgba(0,0,0,0.15);
}
.xr-btn-white::before { background: rgba(0,102,255,0.1); }
.xr-btn-outline-white {
    background: transparent;
    color: white;
    border: 2px solid rgba(255,255,255,0.5);
    backdrop-filter: blur(4px);
}
.xr-btn-outline-white:hover {
    background: rgba(255,255,255,0.15);
    border-color: white;
    transform: translateY(-3px);
}
.xr-btn-outline-white::before { background: rgba(255,255,255,0.1); }
@media (max-width: 768px) {
    .xr-cta-card { padding: var(--spacing-2xl) var(--spacing-lg); }
}

/* ============================================
   404 页面
   ============================================ */
.xr-404-page {
    min-height: calc(100vh - 72px);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-3xl) 0;
    margin-top: 72px;
}
.xr-404-content {
    text-align: center;
    max-width: 540px;
    margin: 0 auto;
}
.xr-404-code {
    font-size: clamp(6rem, 20vw, 10rem);
    font-weight: 900;
    line-height: 1;
    background: linear-gradient(135deg, var(--color-primary) 0%, rgba(0,102,255,0.25) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--spacing-md);
}
.xr-404-title {
    font-size: var(--font-size-3xl);
    font-weight: 800;
    margin-bottom: var(--spacing-md);
}
.xr-404-desc {
    color: var(--color-text-secondary);
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-xl);
}
.xr-404-actions {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
}

/* ============================================
   移动端修正（新组件）
   ============================================ */
@media (max-width: 768px) {
    .xr-header-actions { gap: 4px; }
    .xr-about-article { padding: var(--spacing-xl) var(--spacing-lg); }
}

/* ============================================
   Hero 潮酷背景模式
   ============================================ */
.xr-hero-bg--image {
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
}
.xr-hero-bg--image::before,
.xr-hero-bg--image::after,
.xr-hero-bg--video::before,
.xr-hero-bg--video::after { display: none; }

.xr-hero-bg--video { background: none; }
.xr-hero-bg--video video {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.xr-hero-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, var(--hero-overlay, 0.4));
    z-index: 0;
    pointer-events: none;
}
.xr-hero--cool .xr-container,
.xr-hero--cool .xr-scroll-hint { position: relative; z-index: 2; }
.xr-hero--light-text .xr-hero-title {
    background: none;
    -webkit-background-clip: unset;
    background-clip: unset;
    -webkit-text-fill-color: rgba(255, 255, 255, 0.95);
    color: rgba(255, 255, 255, 0.95);
}
.xr-hero--light-text .xr-hero-subtitle {
    color: rgba(255, 255, 255, 0.85);
}

/* ============================================
   友情链接（页脚）
   ============================================ */
.xr-footer-blogroll {
    /* 上方分隔线来自 .xr-footer-top 的 border-bottom，
       下方分隔线来自 .xr-footer-bottom 的 border-top，
       不额外加线，避免出现双线。
       footer-top 已有 margin-bottom: var(--spacing-lg)，
       所以此处只补充底部 padding，保持上下视觉均等 */
    padding: 0 0 var(--spacing-lg);
    margin-bottom: 0;
}
.xr-footer-blogroll-title {
    font-size: var(--font-size-xs);
    color: rgba(255, 255, 255, 0.4);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: var(--spacing-sm);
}
.xr-footer-blogroll-links {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm) var(--spacing-lg);
}
.xr-footer-blogroll-links a {
    color: rgba(255, 255, 255, 0.55);
    text-decoration: none;
    font-size: var(--font-size-sm);
    transition: color var(--transition-fast);
    white-space: nowrap;
}
.xr-footer-blogroll-links a:hover { color: rgba(255, 255, 255, 0.9); }

/* ============================================
   子分类导航
   ============================================ */
.xr-sort-subnav {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
    padding: var(--spacing-lg) 0;
    margin-bottom: var(--spacing-xl);
    border-bottom: 1px solid var(--color-border);
}
.xr-sort-subnav-link {
    display: inline-flex;
    align-items: center;
    padding: 6px 16px;
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-text-secondary);
    text-decoration: none;
    border: 1px solid var(--color-border);
    background: var(--color-background);
    transition: all var(--transition-fast);
    -webkit-tap-highlight-color: transparent;
}
.xr-sort-subnav-link:hover {
    color: var(--color-primary);
    border-color: var(--color-primary);
    background: rgba(0, 102, 255, 0.05);
}
.xr-sort-subnav-link.active {
    color: white;
    background: var(--color-primary);
    border-color: var(--color-primary);
}

/* ============================================
   主题切换器旧样式清理
   ============================================ */
.xr-theme-btn,
.xr-theme-menu,
.xr-theme-option,
.xr-theme-icon-sun,
.xr-theme-icon-moon,
.xr-theme-icon-auto {
    /* Legacy styles — handled by new FAB */
}

/* ============================================
   打印样式
   ============================================ */
@media print {
    .xr-header, .xr-footer, .xr-back-to-top,
    .xr-theme-fab, .xr-fab-link, .xr-mobile-menu-btn { display: none !important; }
    .xr-article-page { padding-top: 0; }
    body { color: #000; background: #fff; }
}