/* ==========================================================================
   辰丰成分测试中心 - 主样式表
   TIC Chengfen Ceshi Main Stylesheet
   ==========================================================================
   CSS命名空间: .cf- (chengfen)
   全部class使用 .cf- 前缀
   ========================================================================== */

/* ==========================================================================
   CSS变量系统
   ========================================================================== */
:root {
    /* 主色调 - 深蓝科技风 */
    --cf-deep-blue: #0B1E3D;
    --cf-blue-800: #0F2557;
    --cf-blue-700: #15306B;
    --cf-blue-600: #1B3D82;
    --cf-cyan: #00BCD4;
    --cf-cyan-light: #4DD0E1;
    --cf-cyan-dark: #0097A7;

    /* 中性色 */
    --cf-white: #FFFFFF;
    --cf-off-white: #F5F8FC;
    --cf-gray-100: #F0F4F8;
    --cf-gray-200: #E2E8F0;
    --cf-gray-300: #CBD5E1;
    --cf-gray-400: #94A3B8;
    --cf-gray-500: #64748B;
    --cf-gray-600: #475569;
    --cf-gray-700: #334155;
    --cf-gray-800: #1E293B;
    --cf-gray-900: #0F172A;

    /* CTA色 */
    --cf-orange: #FF6D00;
    --cf-orange-dark: #E65100;
    --cf-orange-light: #FF9100;

    /* 功能色 */
    --cf-success: #10B981;
    --cf-warning: #F59E0B;
    --cf-error: #EF4444;
    --cf-info: #3B82F6;

    /* 侧边栏 */
    --cf-sidebar-width: 260px;
    --cf-sidebar-bg: var(--cf-deep-blue);
    --cf-sidebar-hover: rgba(0, 188, 212, 0.08);
    --cf-sidebar-active: var(--cf-cyan);

    /* 间距系统 */
    --cf-space-xs: 4px;
    --cf-space-sm: 8px;
    --cf-space-md: 16px;
    --cf-space-lg: 24px;
    --cf-space-xl: 32px;
    --cf-space-2xl: 48px;
    --cf-space-3xl: 64px;
    --cf-space-4xl: 80px;

    /* 阴影 */
    --cf-shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --cf-shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07);
    --cf-shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.1);
    --cf-shadow-xl: 0 20px 50px rgba(0, 0, 0, 0.15);

    /* 圆角 */
    --cf-radius-sm: 4px;
    --cf-radius-md: 8px;
    --cf-radius-lg: 12px;
    --cf-radius-xl: 16px;
    --cf-radius-full: 9999px;

    /* 字体 */
    --cf-font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", "PingFang SC", "Microsoft YaHei", sans-serif;
    --cf-font-mono: "Cascadia Code", "Fira Code", "JetBrains Mono", "Consolas", monospace;

    /* 字体大小 */
    --cf-text-xs: 0.75rem;
    --cf-text-sm: 0.875rem;
    --cf-text-base: 1rem;
    --cf-text-lg: 1.125rem;
    --cf-text-xl: 1.25rem;
    --cf-text-2xl: 1.5rem;
    --cf-text-3xl: 1.875rem;
    --cf-text-4xl: 2.25rem;
    --cf-text-5xl: 3rem;

    /* 行高 */
    --cf-leading-tight: 1.25;
    --cf-leading-normal: 1.6;
    --cf-leading-relaxed: 1.75;

    /* 过渡 */
    --cf-transition-fast: 150ms ease;
    --cf-transition-normal: 300ms ease;
    --cf-transition-slow: 500ms ease;

    /* 内容最大宽度 */
    --cf-content-width: 1200px;
    --cf-content-narrow: 840px;
}

/* ==========================================================================
   Reset与基础
   ========================================================================== */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
    -ms-text-size-adjust: 100%;
}

body {
    font-family: var(--cf-font-family);
    font-size: var(--cf-text-base);
    line-height: var(--cf-leading-normal);
    color: var(--cf-gray-800);
    background-color: var(--cf-white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

/* ==========================================================================
   跳过导航
   ========================================================================== */
.cf-skip-link {
    position: absolute;
    top: -100px;
    left: var(--cf-sidebar-width);
    background: var(--cf-cyan);
    color: var(--cf-white);
    padding: var(--cf-space-sm) var(--cf-space-md);
    z-index: 10000;
    border-radius: 0 0 var(--cf-radius-sm) 0;
    text-decoration: none;
    font-weight: 600;
    transition: top var(--cf-transition-fast);
}

.cf-skip-link:focus {
    top: 0;
}

/* ==========================================================================
   左侧固定导航栏 (本站核心特征)
   ========================================================================== */
.cf-sidebar {
    position: fixed;
    top: 0;
    left: 0;
    width: var(--cf-sidebar-width);
    height: 100vh;
    height: 100dvh;
    background: linear-gradient(180deg, var(--cf-deep-blue) 0%, #081630 100%);
    color: var(--cf-white);
    z-index: 100;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    box-shadow: 4px 0 24px rgba(0, 0, 0, 0.25);
    transition: transform var(--cf-transition-normal);
}

.cf-sidebar-inner {
    display: flex;
    flex-direction: column;
    height: 100%;
    overflow-y: auto;
    overflow-x: hidden;
    padding: var(--cf-space-lg) 0;
}

/* 侧边栏滚动条美化 */
.cf-sidebar-inner::-webkit-scrollbar {
    width: 4px;
}

.cf-sidebar-inner::-webkit-scrollbar-track {
    background: transparent;
}

.cf-sidebar-inner::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.15);
    border-radius: var(--cf-radius-full);
}

.cf-sidebar-inner::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.25);
}

/* 侧边栏遮罩 */
.cf-sidebar-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 99;
    backdrop-filter: blur(2px);
}

/* 侧边栏品牌区 */
.cf-sidebar-brand {
    padding: 0 var(--cf-space-lg) var(--cf-space-xl);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    margin-bottom: var(--cf-space-lg);
}

.cf-brand-link {
    display: flex;
    align-items: center;
    gap: var(--cf-space-md);
    text-decoration: none;
    color: var(--cf-white);
    transition: opacity var(--cf-transition-fast);
}

.cf-brand-link:hover {
    opacity: 0.9;
}

.cf-brand-icon {
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    background: rgba(0, 188, 212, 0.15);
    border-radius: var(--cf-radius-lg);
    border: 1px solid rgba(0, 188, 212, 0.3);
}

.cf-brand-icon svg {
    width: 32px;
    height: 32px;
}

.cf-brand-text {
    min-width: 0;
}

.cf-brand-name {
    font-size: var(--cf-text-lg);
    font-weight: 700;
    letter-spacing: 0.5px;
    line-height: var(--cf-leading-tight);
    white-space: nowrap;
}

.cf-brand-tagline {
    font-size: var(--cf-text-xs);
    color: var(--cf-cyan);
    margin-top: var(--cf-space-xs);
    letter-spacing: 2px;
    text-transform: uppercase;
}

/* 侧边栏导航 */
.cf-sidebar-nav {
    flex: 1;
    padding: 0 var(--cf-space-md);
}

.cf-nav-list {
    list-style: none;
    margin: 0;
    padding: 0;
}

.cf-nav-item {
    margin-bottom: var(--cf-space-xs);
}

.cf-nav-link {
    display: flex;
    align-items: center;
    gap: var(--cf-space-md);
    padding: 12px var(--cf-space-md);
    color: rgba(255, 255, 255, 0.75);
    text-decoration: none;
    font-size: var(--cf-text-sm);
    font-weight: 500;
    border-radius: var(--cf-radius-md);
    transition: all var(--cf-transition-fast);
    position: relative;
}

.cf-nav-link:hover {
    color: var(--cf-white);
    background: var(--cf-sidebar-hover);
}

.cf-nav-item--active > .cf-nav-link,
.cf-nav-link[aria-current="page"] {
    color: var(--cf-white);
    background: rgba(0, 188, 212, 0.12);
    font-weight: 600;
}

.cf-nav-item--active > .cf-nav-link::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 3px;
    height: 20px;
    background: var(--cf-cyan);
    border-radius: 0 var(--cf-radius-sm) var(--cf-radius-sm) 0;
}

.cf-nav-icon {
    width: 18px;
    text-align: center;
    font-size: var(--cf-text-sm);
    color: var(--cf-cyan);
    opacity: 0.7;
    flex-shrink: 0;
}

.cf-nav-item--active .cf-nav-icon {
    opacity: 1;
}

.cf-nav-arrow {
    margin-left: auto;
    font-size: 10px;
    transition: transform var(--cf-transition-fast);
}

.cf-nav-item:hover > .cf-nav-link .cf-nav-arrow {
    transform: rotate(-180deg);
}

/* 子菜单 */
.cf-nav-submenu {
    list-style: none;
    padding: var(--cf-space-xs) 0;
    margin: 0;
    display: none;
}

.cf-nav-item:hover > .cf-nav-submenu,
.cf-nav-item--active > .cf-nav-submenu {
    display: block;
}

.cf-nav-submenu .cf-nav-link {
    padding-left: 52px;
    font-size: var(--cf-text-xs);
}

/* 侧边栏联系信息 */
.cf-sidebar-contact {
    padding: var(--cf-space-lg);
    margin-top: auto;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.cf-contact-item {
    display: flex;
    align-items: center;
    gap: var(--cf-space-sm);
    margin-bottom: var(--cf-space-sm);
    font-size: var(--cf-text-xs);
    color: rgba(255, 255, 255, 0.6);
}

.cf-contact-item i {
    width: 16px;
    color: var(--cf-cyan);
    font-size: var(--cf-text-xs);
}

.cf-contact-item a {
    color: rgba(255, 255, 255, 0.6);
    text-decoration: none;
    transition: color var(--cf-transition-fast);
}

.cf-contact-item a:hover {
    color: var(--cf-cyan);
}

/* ==========================================================================
   移动端顶部栏
   ========================================================================== */
.cf-mobile-bar {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 56px;
    background: var(--cf-deep-blue);
    z-index: 98;
    align-items: center;
    padding: 0 var(--cf-space-md);
    box-shadow: var(--cf-shadow-md);
}

.cf-mobile-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0;
    flex-shrink: 0;
}

.cf-hamburger {
    display: flex;
    flex-direction: column;
    gap: 5px;
    width: 22px;
}

.cf-hamburger-line {
    display: block;
    width: 100%;
    height: 2px;
    background: var(--cf-white);
    border-radius: 2px;
    transition: all var(--cf-transition-fast);
}

/* 激活态X */
.cf-mobile-toggle[aria-expanded="true"] .cf-hamburger-line:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.cf-mobile-toggle[aria-expanded="true"] .cf-hamburger-line:nth-child(2) {
    opacity: 0;
}

.cf-mobile-toggle[aria-expanded="true"] .cf-hamburger-line:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

.cf-mobile-logo {
    display: flex;
    align-items: center;
    gap: var(--cf-space-sm);
    color: var(--cf-white);
    text-decoration: none;
    font-weight: 700;
    font-size: var(--cf-text-sm);
    margin-left: var(--cf-space-md);
}

.cf-mobile-logo svg {
    width: 28px;
    height: 28px;
}

.cf-mobile-spacer {
    flex: 1;
}

/* ==========================================================================
   右侧主内容区
   ========================================================================== */
.cf-main {
    margin-left: var(--cf-sidebar-width);
    min-height: 100vh;
    min-height: 100dvh;
    background: var(--cf-white);
}

/* ==========================================================================
   通用容器
   ========================================================================== */
.cf-page-container,
.cf-single-container,
.cf-archive-container,
.cf-search-container {
    max-width: var(--cf-content-width);
    margin: 0 auto;
    padding: var(--cf-space-2xl) var(--cf-space-lg);
}

.cf-page-main,
.cf-single-main,
.cf-archive-main,
.cf-search-main,
.cf-404-main {
    min-height: 60vh;
}

/* ==========================================================================
   面包屑
   ========================================================================== */
.cf-breadcrumb {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--cf-space-sm);
    margin-bottom: var(--cf-space-xl);
    padding: var(--cf-space-md) 0;
    font-size: var(--cf-text-sm);
    color: var(--cf-gray-500);
}

.cf-breadcrumb a {
    color: var(--cf-gray-500);
    text-decoration: none;
    transition: color var(--cf-transition-fast);
}

.cf-breadcrumb a:hover {
    color: var(--cf-cyan);
}

.cf-breadcrumb .cf-breadcrumb-delim {
    color: var(--cf-gray-300);
    font-size: var(--cf-text-xs);
}

.cf-breadcrumb .cf-breadcrumb-current {
    color: var(--cf-gray-700);
    font-weight: 500;
}

/* ==========================================================================
   Hero区 (首页)
   ========================================================================== */
.cf-hero {
    position: relative;
    min-height: calc(100vh - 0px);
    min-height: calc(100dvh - 0px);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    background: var(--cf-deep-blue);
}

.cf-hero-bg {
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse at 20% 50%, rgba(0, 188, 212, 0.12) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 20%, rgba(0, 188, 212, 0.08) 0%, transparent 50%),
        radial-gradient(ellipse at 60% 80%, rgba(11, 30, 61, 0.9) 0%, transparent 50%),
        linear-gradient(135deg, var(--cf-deep-blue) 0%, #0a2a52 40%, #0d1f3c 100%);
    z-index: 1;
}

/* 网格线装饰 */
.cf-hero-bg::after {
    content: '';
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(0, 188, 212, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 188, 212, 0.03) 1px, transparent 1px);
    background-size: 60px 60px;
    z-index: 1;
}

.cf-hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(11, 30, 61, 0.4) 0%, rgba(11, 30, 61, 0.2) 50%, rgba(11, 30, 61, 0.3) 100%);
    z-index: 2;
}

.cf-hero-content {
    position: relative;
    z-index: 3;
    text-align: center;
    max-width: 780px;
    padding: var(--cf-space-3xl) var(--cf-space-lg);
}

.cf-hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--cf-space-sm);
    padding: var(--cf-space-sm) var(--cf-space-lg);
    background: rgba(0, 188, 212, 0.12);
    border: 1px solid rgba(0, 188, 212, 0.25);
    border-radius: var(--cf-radius-full);
    color: var(--cf-cyan-light);
    font-size: var(--cf-text-sm);
    font-weight: 500;
    margin-bottom: var(--cf-space-xl);
    letter-spacing: 1px;
}

.cf-hero-badge i {
    font-size: var(--cf-text-sm);
}

.cf-hero-title {
    font-size: clamp(2.25rem, 5vw, 3.75rem);
    font-weight: 800;
    color: var(--cf-white);
    line-height: var(--cf-leading-tight);
    margin-bottom: var(--cf-space-lg);
    letter-spacing: -0.5px;
}

.cf-hero-title-line {
    display: block;
    background: linear-gradient(135deg, var(--cf-white) 0%, var(--cf-cyan-light) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* 标题逐字浮现动画 */
.cf-hero-title-line {
    animation: cf-hero-reveal 1.2s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes cf-hero-reveal {
    from {
        opacity: 0;
        transform: translateY(30px);
        filter: blur(8px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
        filter: blur(0);
    }
}

.cf-hero-subtitle {
    font-size: var(--cf-text-lg);
    color: rgba(255, 255, 255, 0.7);
    line-height: var(--cf-leading-relaxed);
    margin-bottom: var(--cf-space-2xl);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    animation: cf-hero-fade-up 1.2s 0.3s cubic-bezier(0.16, 1, 0.3, 1) both;
}

@keyframes cf-hero-fade-up {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.cf-hero-actions {
    display: flex;
    gap: var(--cf-space-md);
    justify-content: center;
    flex-wrap: wrap;
    animation: cf-hero-fade-up 1.2s 0.5s cubic-bezier(0.16, 1, 0.3, 1) both;
}

.cf-hero-scroll {
    position: absolute;
    bottom: var(--cf-space-xl);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--cf-space-sm);
    color: rgba(255, 255, 255, 0.4);
    font-size: var(--cf-text-xs);
    z-index: 3;
    animation: cf-hero-pulse 2s ease-in-out infinite;
}

.cf-hero-scroll-arrow {
    animation: cf-hero-bounce 2s ease-in-out infinite;
}

@keyframes cf-hero-pulse {
    0%, 100% { opacity: 0.4; }
    50% { opacity: 1; }
}

@keyframes cf-hero-bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateY(0); }
    40% { transform: translateY(6px); }
    60% { transform: translateY(3px); }
}

/* ==========================================================================
   按钮系统
   ========================================================================== */
.cf-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--cf-space-sm);
    padding: 12px 28px;
    font-size: var(--cf-text-sm);
    font-weight: 600;
    font-family: var(--cf-font-family);
    text-decoration: none;
    border-radius: var(--cf-radius-md);
    border: 2px solid transparent;
    cursor: pointer;
    transition: all var(--cf-transition-fast);
    white-space: nowrap;
    line-height: 1.4;
}

.cf-btn-primary {
    background: var(--cf-cyan);
    color: var(--cf-white);
    border-color: var(--cf-cyan);
}

.cf-btn-primary:hover {
    background: var(--cf-cyan-dark);
    border-color: var(--cf-cyan-dark);
    box-shadow: 0 4px 16px rgba(0, 188, 212, 0.35);
    transform: translateY(-1px);
}

.cf-btn-secondary {
    background: transparent;
    color: var(--cf-cyan);
    border-color: var(--cf-cyan);
}

.cf-btn-secondary:hover {
    background: rgba(0, 188, 212, 0.08);
    transform: translateY(-1px);
}

.cf-btn-outline {
    background: transparent;
    color: var(--cf-white);
    border-color: rgba(255, 255, 255, 0.3);
}

.cf-btn-outline:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.5);
    transform: translateY(-1px);
}

.cf-btn-cta {
    background: var(--cf-orange);
    color: var(--cf-white);
    border-color: var(--cf-orange);
    font-size: var(--cf-text-base);
    padding: 14px 36px;
}

.cf-btn-cta:hover {
    background: var(--cf-orange-dark);
    border-color: var(--cf-orange-dark);
    box-shadow: 0 6px 20px rgba(255, 109, 0, 0.4);
    transform: translateY(-2px);
}

.cf-btn-cta-outline {
    background: transparent;
    color: var(--cf-white);
    border-color: rgba(255, 255, 255, 0.3);
    font-size: var(--cf-text-base);
    padding: 14px 36px;
}

.cf-btn-cta-outline:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.5);
    transform: translateY(-2px);
}

/* ==========================================================================
   Section通用样式
   ========================================================================== */
.cf-section-header {
    text-align: center;
    margin-bottom: var(--cf-space-3xl);
    padding: 0 var(--cf-space-lg);
}

.cf-section-label {
    display: inline-block;
    font-size: var(--cf-text-sm);
    font-weight: 600;
    color: var(--cf-cyan);
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: var(--cf-space-md);
}

.cf-section-title {
    font-size: var(--cf-text-3xl);
    font-weight: 700;
    color: var(--cf-gray-900);
    margin-bottom: var(--cf-space-md);
    line-height: var(--cf-leading-tight);
}

.cf-section-desc {
    font-size: var(--cf-text-lg);
    color: var(--cf-gray-500);
    max-width: 600px;
    margin: 0 auto;
}

/* ==========================================================================
   统计数字带
   ========================================================================== */
.cf-stats {
    background: var(--cf-deep-blue);
    padding: var(--cf-space-3xl) var(--cf-space-lg);
}

.cf-stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--cf-space-xl);
    max-width: var(--cf-content-width);
    margin: 0 auto;
}

.cf-stat-item {
    text-align: center;
    color: var(--cf-white);
}

.cf-stat-icon {
    font-size: 2rem;
    color: var(--cf-cyan);
    margin-bottom: var(--cf-space-md);
    opacity: 0.8;
}

.cf-stat-number {
    font-size: var(--cf-text-4xl);
    font-weight: 800;
    margin-bottom: var(--cf-space-sm);
    font-variant-numeric: tabular-nums;
    background: linear-gradient(135deg, var(--cf-white) 0%, var(--cf-cyan-light) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.cf-stat-label {
    font-size: var(--cf-text-sm);
    color: rgba(255, 255, 255, 0.6);
    font-weight: 500;
}

/* ==========================================================================
   服务速览
   ========================================================================== */
.cf-services-overview {
    padding: var(--cf-space-4xl) var(--cf-space-lg);
    background: var(--cf-off-white);
}

.cf-services-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--cf-space-lg);
    max-width: var(--cf-content-width);
    margin: 0 auto;
}

.cf-service-card {
    background: var(--cf-white);
    border-radius: var(--cf-radius-lg);
    padding: var(--cf-space-xl);
    border: 1px solid var(--cf-gray-200);
    text-align: center;
    transition: all var(--cf-transition-normal);
    position: relative;
    top: 0;
}

.cf-service-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--cf-shadow-lg);
    border-color: var(--cf-cyan);
}

.cf-service-card-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, rgba(0, 188, 212, 0.1), rgba(11, 30, 61, 0.1));
    border-radius: var(--cf-radius-lg);
    margin-bottom: var(--cf-space-lg);
    font-size: 1.75rem;
    color: var(--cf-cyan);
    transition: all var(--cf-transition-normal);
}

.cf-service-card:hover .cf-service-card-icon {
    background: linear-gradient(135deg, var(--cf-cyan), var(--cf-cyan-dark));
    color: var(--cf-white);
    transform: scale(1.05);
}

.cf-service-card-title {
    font-size: var(--cf-text-xl);
    font-weight: 700;
    color: var(--cf-gray-900);
    margin-bottom: var(--cf-space-md);
}

.cf-service-card-desc {
    font-size: var(--cf-text-sm);
    color: var(--cf-gray-500);
    line-height: var(--cf-leading-relaxed);
    margin-bottom: var(--cf-space-lg);
}

.cf-service-card-link {
    display: inline-flex;
    align-items: center;
    gap: var(--cf-space-xs);
    font-size: var(--cf-text-sm);
    font-weight: 600;
    color: var(--cf-cyan);
    text-decoration: none;
    transition: gap var(--cf-transition-fast);
}

.cf-service-card-link:hover {
    gap: var(--cf-space-md);
}

/* ==========================================================================
   关于我们
   ========================================================================== */
.cf-about {
    padding: var(--cf-space-4xl) var(--cf-space-lg);
    background: var(--cf-white);
}

.cf-about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--cf-space-3xl);
    max-width: var(--cf-content-width);
    margin: 0 auto;
    align-items: center;
}

.cf-about-image {
    position: relative;
    border-radius: var(--cf-radius-xl);
    overflow: hidden;
    aspect-ratio: 4/3;
}

.cf-about-image-placeholder {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--cf-gray-200) 0%, var(--cf-gray-300) 100%);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: var(--cf-gray-400);
    gap: var(--cf-space-md);
}

.cf-about-image-icon {
    font-size: 4rem;
    opacity: 0.5;
}

.cf-about-badge {
    position: absolute;
    bottom: var(--cf-space-lg);
    right: var(--cf-space-lg);
    display: flex;
    align-items: center;
    gap: var(--cf-space-sm);
    background: var(--cf-deep-blue);
    color: var(--cf-white);
    padding: var(--cf-space-sm) var(--cf-space-lg);
    border-radius: var(--cf-radius-full);
    font-size: var(--cf-text-sm);
    font-weight: 600;
    box-shadow: var(--cf-shadow-lg);
}

.cf-about-badge i {
    color: var(--cf-cyan);
}

.cf-about-content .cf-section-label {
    margin-bottom: var(--cf-space-md);
}

.cf-about-content .cf-section-title {
    font-size: var(--cf-text-3xl);
    margin-bottom: var(--cf-space-lg);
}

.cf-about-text {
    font-size: var(--cf-text-base);
    color: var(--cf-gray-600);
    line-height: var(--cf-leading-relaxed);
    margin-bottom: var(--cf-space-lg);
}

.cf-about-certs {
    display: flex;
    flex-direction: column;
    gap: var(--cf-space-md);
    margin-bottom: var(--cf-space-xl);
}

.cf-cert-badge {
    display: flex;
    align-items: center;
    gap: var(--cf-space-md);
    padding: var(--cf-space-md) var(--cf-space-lg);
    background: var(--cf-off-white);
    border-radius: var(--cf-radius-md);
    border-left: 3px solid var(--cf-cyan);
}

.cf-cert-badge i {
    font-size: 1.5rem;
    color: var(--cf-cyan);
}

.cf-cert-badge strong {
    display: block;
    font-size: var(--cf-text-sm);
    color: var(--cf-gray-800);
    margin-bottom: var(--cf-space-xs);
}

.cf-cert-badge span {
    font-size: var(--cf-text-xs);
    color: var(--cf-gray-500);
}

/* ==========================================================================
   核心优势
   ========================================================================== */
.cf-advantages {
    padding: var(--cf-space-4xl) var(--cf-space-lg);
    background: var(--cf-off-white);
}

.cf-advantages-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--cf-space-lg);
    max-width: var(--cf-content-width);
    margin: 0 auto;
}

.cf-advantage-card {
    background: var(--cf-white);
    border-radius: var(--cf-radius-lg);
    padding: var(--cf-space-xl);
    border: 1px solid var(--cf-gray-200);
    transition: all var(--cf-transition-normal);
    position: relative;
    top: 0;
}

.cf-advantage-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--cf-shadow-lg);
    border-color: var(--cf-cyan);
}

.cf-advantage-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 52px;
    height: 52px;
    background: linear-gradient(135deg, rgba(0, 188, 212, 0.1), rgba(11, 30, 61, 0.1));
    border-radius: var(--cf-radius-md);
    margin-bottom: var(--cf-space-lg);
    font-size: 1.5rem;
    color: var(--cf-cyan);
}

.cf-advantage-card:hover .cf-advantage-icon {
    background: var(--cf-deep-blue);
    color: var(--cf-cyan);
}

.cf-advantage-title {
    font-size: var(--cf-text-lg);
    font-weight: 700;
    color: var(--cf-gray-900);
    margin-bottom: var(--cf-space-sm);
}

.cf-advantage-desc {
    font-size: var(--cf-text-sm);
    color: var(--cf-gray-500);
    line-height: var(--cf-leading-relaxed);
}

/* ==========================================================================
   最新文章
   ========================================================================== */
.cf-latest-posts {
    padding: var(--cf-space-4xl) var(--cf-space-lg);
    background: var(--cf-white);
}

.cf-posts-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--cf-space-lg);
    max-width: var(--cf-content-width);
    margin: 0 auto;
}

.cf-post-card {
    background: var(--cf-white);
    border-radius: var(--cf-radius-lg);
    overflow: hidden;
    border: 1px solid var(--cf-gray-200);
    transition: all var(--cf-transition-normal);
    position: relative;
    top: 0;
}

.cf-post-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--cf-shadow-lg);
    border-color: var(--cf-cyan);
}

.cf-post-card-thumb {
    display: block;
    aspect-ratio: 16/9;
    overflow: hidden;
    background: var(--cf-gray-100);
}

.cf-post-card-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--cf-transition-slow);
}

.cf-post-card:hover .cf-post-card-img {
    transform: scale(1.05);
}

.cf-post-card-img-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--cf-gray-200), var(--cf-gray-300));
    color: var(--cf-gray-400);
    font-size: 2rem;
}

.cf-post-card-body {
    padding: var(--cf-space-lg);
}

.cf-post-card-cat {
    display: inline-block;
    font-size: var(--cf-text-xs);
    font-weight: 600;
    color: var(--cf-cyan);
    text-transform: uppercase;
    letter-spacing: 1px;
    text-decoration: none;
    margin-bottom: var(--cf-space-sm);
}

.cf-post-card-cat:hover {
    color: var(--cf-cyan-dark);
}

.cf-post-card-title {
    font-size: var(--cf-text-lg);
    font-weight: 700;
    margin-bottom: var(--cf-space-md);
    line-height: var(--cf-leading-tight);
}

.cf-post-card-title a {
    color: var(--cf-gray-900);
    text-decoration: none;
    transition: color var(--cf-transition-fast);
}

.cf-post-card-title a:hover {
    color: var(--cf-cyan);
}

.cf-post-card-date {
    display: flex;
    align-items: center;
    gap: var(--cf-space-xs);
    font-size: var(--cf-text-xs);
    color: var(--cf-gray-400);
    margin-bottom: var(--cf-space-sm);
}

.cf-post-card-excerpt {
    font-size: var(--cf-text-sm);
    color: var(--cf-gray-500);
    line-height: var(--cf-leading-relaxed);
}

.cf-post-card--placeholder {
    opacity: 0.6;
}

.cf-posts-more {
    text-align: center;
    margin-top: var(--cf-space-2xl);
}

/* ==========================================================================
   CTA横幅
   ========================================================================== */
.cf-cta-banner {
    position: relative;
    padding: var(--cf-space-4xl) var(--cf-space-lg);
    background: var(--cf-deep-blue);
    overflow: hidden;
}

.cf-cta-banner-bg {
    position: absolute;
    inset: 0;
    background:
        radial-gradient(circle at 20% 80%, rgba(255, 109, 0, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(0, 188, 212, 0.15) 0%, transparent 50%);
}

.cf-cta-banner-content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 700px;
    margin: 0 auto;
}

.cf-cta-banner-title {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 800;
    color: var(--cf-white);
    margin-bottom: var(--cf-space-lg);
}

.cf-cta-banner-desc {
    font-size: var(--cf-text-lg);
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: var(--cf-space-xl);
    line-height: var(--cf-leading-relaxed);
}

.cf-cta-banner-actions {
    display: flex;
    gap: var(--cf-space-md);
    justify-content: center;
    flex-wrap: wrap;
}

/* ==========================================================================
   合作客户
   ========================================================================== */
.cf-clients {
    padding: var(--cf-space-4xl) var(--cf-space-lg);
    background: var(--cf-off-white);
}

.cf-clients-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: var(--cf-space-lg);
    max-width: var(--cf-content-width);
    margin: 0 auto;
}

.cf-client-logo {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--cf-space-xl);
    background: var(--cf-white);
    border-radius: var(--cf-radius-md);
    border: 1px solid var(--cf-gray-200);
    min-height: 80px;
    transition: all var(--cf-transition-fast);
}

.cf-client-logo:hover {
    border-color: var(--cf-cyan);
    box-shadow: var(--cf-shadow-sm);
}

.cf-client-placeholder {
    font-size: var(--cf-text-sm);
    font-weight: 600;
    color: var(--cf-gray-400);
}

/* ==========================================================================
   页脚
   ========================================================================== */
.cf-footer {
    background: var(--cf-gray-900);
    color: var(--cf-white);
}

.cf-footer-grid {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr 0.8fr 1.2fr;
    gap: var(--cf-space-2xl);
    max-width: var(--cf-content-width);
    margin: 0 auto;
    padding: var(--cf-space-3xl) var(--cf-space-lg);
}

.cf-footer-logo {
    display: flex;
    align-items: center;
    gap: var(--cf-space-md);
    margin-bottom: var(--cf-space-lg);
}

.cf-footer-logo strong {
    font-size: var(--cf-text-lg);
    color: var(--cf-white);
}

.cf-footer-desc {
    font-size: var(--cf-text-sm);
    color: rgba(255, 255, 255, 0.5);
    line-height: var(--cf-leading-relaxed);
    margin-bottom: var(--cf-space-lg);
}

.cf-footer-social {
    display: flex;
    gap: var(--cf-space-md);
}

.cf-social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background: rgba(255, 255, 255, 0.08);
    border-radius: var(--cf-radius-full);
    color: rgba(255, 255, 255, 0.6);
    text-decoration: none;
    font-size: var(--cf-text-base);
    transition: all var(--cf-transition-fast);
}

.cf-social-link:hover {
    background: var(--cf-cyan);
    color: var(--cf-white);
    transform: translateY(-2px);
}

.cf-footer-heading {
    font-size: var(--cf-text-base);
    font-weight: 700;
    color: var(--cf-white);
    margin-bottom: var(--cf-space-lg);
    padding-bottom: var(--cf-space-md);
    border-bottom: 2px solid var(--cf-cyan);
    display: inline-block;
}

.cf-footer-menu,
.cf-footer-contact-list {
    list-style: none;
    margin: 0;
    padding: 0;
}

.cf-footer-menu li,
.cf-footer-contact-list li {
    margin-bottom: var(--cf-space-sm);
}

.cf-footer-menu a {
    color: rgba(255, 255, 255, 0.5);
    text-decoration: none;
    font-size: var(--cf-text-sm);
    transition: all var(--cf-transition-fast);
}

.cf-footer-menu a:hover {
    color: var(--cf-cyan);
    padding-left: var(--cf-space-sm);
}

.cf-footer-contact-list li {
    display: flex;
    align-items: flex-start;
    gap: var(--cf-space-sm);
    font-size: var(--cf-text-sm);
    color: rgba(255, 255, 255, 0.5);
}

.cf-footer-contact-list li i {
    color: var(--cf-cyan);
    margin-top: 3px;
    width: 14px;
}

.cf-footer-contact-list li a {
    color: rgba(255, 255, 255, 0.5);
    text-decoration: none;
    transition: color var(--cf-transition-fast);
}

.cf-footer-contact-list li a:hover {
    color: var(--cf-cyan);
}

/* 版权栏 */
.cf-footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    padding: var(--cf-space-lg);
}

.cf-footer-bottom-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: var(--cf-content-width);
    margin: 0 auto;
    flex-wrap: wrap;
    gap: var(--cf-space-md);
    font-size: var(--cf-text-sm);
    color: rgba(255, 255, 255, 0.4);
}

.cf-footer-bottom-inner a {
    color: rgba(255, 255, 255, 0.4);
    text-decoration: none;
    transition: color var(--cf-transition-fast);
}

.cf-footer-bottom-inner a:hover {
    color: var(--cf-cyan);
}

/* 页脚Widget */
.cf-footer-widget {
    margin-bottom: var(--cf-space-lg);
}

.cf-footer-widget-title {
    font-size: var(--cf-text-base);
    font-weight: 700;
    margin-bottom: var(--cf-space-md);
    color: var(--cf-white);
}

/* ==========================================================================
   浮动按钮
   ========================================================================== */
.cf-back-top {
    position: fixed;
    bottom: var(--cf-space-xl);
    right: var(--cf-space-xl);
    width: 44px;
    height: 44px;
    background: var(--cf-deep-blue);
    color: var(--cf-white);
    border: none;
    border-radius: var(--cf-radius-full);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--cf-text-lg);
    box-shadow: var(--cf-shadow-lg);
    z-index: 50;
    opacity: 0;
    visibility: hidden;
    transition: all var(--cf-transition-normal);
}

.cf-back-top.cf-visible {
    opacity: 1;
    visibility: visible;
}

.cf-back-top:hover {
    background: var(--cf-cyan);
    transform: translateY(-2px);
}

/* 在线咨询浮动 */
.cf-float-contact {
    position: fixed;
    bottom: 120px;
    right: var(--cf-space-xl);
    z-index: 50;
    display: flex;
    flex-direction: column;
    gap: var(--cf-space-sm);
}

.cf-float-btn {
    display: flex;
    align-items: center;
    gap: var(--cf-space-sm);
    padding: 10px 18px;
    background: var(--cf-deep-blue);
    color: var(--cf-white);
    border-radius: var(--cf-radius-full);
    text-decoration: none;
    font-size: var(--cf-text-sm);
    font-weight: 500;
    box-shadow: var(--cf-shadow-md);
    transition: all var(--cf-transition-fast);
    white-space: nowrap;
}

.cf-float-btn:hover {
    transform: translateX(-4px);
    box-shadow: var(--cf-shadow-lg);
}

.cf-float-phone:hover {
    background: var(--cf-cyan);
}

.cf-float-wechat:hover {
    background: #07C160;
}

.cf-float-message:hover {
    background: var(--cf-orange);
}

.cf-float-label {
    max-width: 0;
    overflow: hidden;
    white-space: nowrap;
    transition: max-width var(--cf-transition-normal), margin var(--cf-transition-normal);
}

.cf-float-btn:hover .cf-float-label {
    max-width: 100px;
    margin-left: var(--cf-space-xs);
}

/* ==========================================================================
   页面模板
   ========================================================================== */
.cf-page-layout {
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: var(--cf-space-2xl);
    align-items: start;
}

.cf-page-header {
    margin-bottom: var(--cf-space-xl);
}

.cf-page-title {
    font-size: var(--cf-text-3xl);
    font-weight: 700;
    color: var(--cf-gray-900);
    line-height: var(--cf-leading-tight);
}

.cf-page-featured-image {
    margin-bottom: var(--cf-space-xl);
    border-radius: var(--cf-radius-lg);
    overflow: hidden;
}

.cf-page-featured-img {
    width: 100%;
    height: auto;
    display: block;
}

.cf-page-body {
    font-size: var(--cf-text-base);
    color: var(--cf-gray-700);
    line-height: var(--cf-leading-relaxed);
}

.cf-page-body h2 {
    font-size: var(--cf-text-2xl);
    font-weight: 700;
    color: var(--cf-gray-900);
    margin: var(--cf-space-xl) 0 var(--cf-space-md);
}

.cf-page-body h3 {
    font-size: var(--cf-text-xl);
    font-weight: 600;
    color: var(--cf-gray-800);
    margin: var(--cf-space-lg) 0 var(--cf-space-md);
}

.cf-page-body p {
    margin-bottom: var(--cf-space-md);
}

.cf-page-body ul,
.cf-page-body ol {
    margin-bottom: var(--cf-space-md);
    padding-left: var(--cf-space-xl);
}

.cf-page-body li {
    margin-bottom: var(--cf-space-sm);
}

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

.cf-page-body a {
    color: var(--cf-cyan);
    text-decoration: underline;
    text-underline-offset: 2px;
}

.cf-page-body a:hover {
    color: var(--cf-cyan-dark);
}

.cf-page-pagination {
    margin-top: var(--cf-space-xl);
    display: flex;
    gap: var(--cf-space-sm);
}

.cf-page-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 36px;
    height: 36px;
    padding: 0 var(--cf-space-sm);
    background: var(--cf-off-white);
    border-radius: var(--cf-radius-md);
    font-size: var(--cf-text-sm);
    color: var(--cf-gray-600);
    text-decoration: none;
}

/* 页面侧边栏 */
.cf-page-sidebar {
    position: sticky;
    top: var(--cf-space-xl);
}

.cf-widget {
    background: var(--cf-off-white);
    border-radius: var(--cf-radius-lg);
    padding: var(--cf-space-lg);
    margin-bottom: var(--cf-space-lg);
}

.cf-widget-title {
    font-size: var(--cf-text-lg);
    font-weight: 700;
    color: var(--cf-gray-900);
    margin-bottom: var(--cf-space-md);
    padding-bottom: var(--cf-space-md);
    border-bottom: 2px solid var(--cf-cyan);
}

/* ==========================================================================
   文章详情
   ========================================================================== */
.cf-single-layout {
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: var(--cf-space-2xl);
    align-items: start;
}

.cf-article-header {
    margin-bottom: var(--cf-space-xl);
}

.cf-article-cat {
    display: inline-block;
    font-size: var(--cf-text-xs);
    font-weight: 600;
    color: var(--cf-cyan);
    text-decoration: none;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: var(--cf-space-md);
}

.cf-article-title {
    font-size: var(--cf-text-3xl);
    font-weight: 800;
    color: var(--cf-gray-900);
    line-height: var(--cf-leading-tight);
    margin-bottom: var(--cf-space-lg);
}

.cf-article-meta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--cf-space-md);
    font-size: var(--cf-text-sm);
    color: var(--cf-gray-500);
    padding-bottom: var(--cf-space-lg);
    border-bottom: 1px solid var(--cf-gray-200);
}

.cf-meta-item {
    display: flex;
    align-items: center;
    gap: var(--cf-space-xs);
}

.cf-meta-item i {
    color: var(--cf-cyan);
    font-size: var(--cf-text-xs);
}

.cf-meta-item a {
    color: var(--cf-gray-500);
    text-decoration: none;
    transition: color var(--cf-transition-fast);
}

.cf-meta-item a:hover {
    color: var(--cf-cyan);
}

.cf-article-featured {
    margin-bottom: var(--cf-space-xl);
    border-radius: var(--cf-radius-lg);
    overflow: hidden;
}

.cf-article-featured-img {
    width: 100%;
    height: auto;
    display: block;
}

.cf-article-body {
    font-size: var(--cf-text-lg);
    color: var(--cf-gray-700);
    line-height: var(--cf-leading-relaxed);
}

.cf-article-body h2 {
    font-size: var(--cf-text-2xl);
    font-weight: 700;
    color: var(--cf-gray-900);
    margin: var(--cf-space-2xl) 0 var(--cf-space-md);
}

.cf-article-body h3 {
    font-size: var(--cf-text-xl);
    font-weight: 600;
    color: var(--cf-gray-800);
    margin: var(--cf-space-xl) 0 var(--cf-space-md);
}

.cf-article-body p {
    margin-bottom: var(--cf-space-lg);
}

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

.cf-article-body ul,
.cf-article-body ol {
    margin-bottom: var(--cf-space-lg);
    padding-left: var(--cf-space-xl);
}

.cf-article-body li {
    margin-bottom: var(--cf-space-sm);
}

.cf-article-body blockquote {
    border-left: 4px solid var(--cf-cyan);
    padding: var(--cf-space-md) var(--cf-space-lg);
    margin: var(--cf-space-xl) 0;
    background: var(--cf-off-white);
    border-radius: 0 var(--cf-radius-md) var(--cf-radius-md) 0;
    font-style: italic;
    color: var(--cf-gray-600);
}

.cf-article-body a {
    color: var(--cf-cyan);
    text-decoration: underline;
    text-underline-offset: 2px;
}

.cf-article-body a:hover {
    color: var(--cf-cyan-dark);
}

.cf-article-pagination {
    margin-top: var(--cf-space-xl);
    display: flex;
    gap: var(--cf-space-sm);
}

/* 标签 */
.cf-article-tags {
    margin-top: var(--cf-space-xl);
    padding-top: var(--cf-space-xl);
    border-top: 1px solid var(--cf-gray-200);
}

.cf-tags-label {
    display: flex;
    align-items: center;
    gap: var(--cf-space-sm);
    font-size: var(--cf-text-sm);
    font-weight: 600;
    color: var(--cf-gray-600);
    margin-bottom: var(--cf-space-md);
}

.cf-tags-cloud {
    display: flex;
    flex-wrap: wrap;
    gap: var(--cf-space-sm);
}

.cf-tags-cloud a {
    display: inline-block;
    padding: var(--cf-space-xs) var(--cf-space-md);
    background: var(--cf-off-white);
    color: var(--cf-gray-600);
    border-radius: var(--cf-radius-full);
    font-size: var(--cf-text-xs);
    text-decoration: none;
    border: 1px solid var(--cf-gray-200);
    transition: all var(--cf-transition-fast);
}

.cf-tags-cloud a:hover {
    background: var(--cf-deep-blue);
    color: var(--cf-white);
    border-color: var(--cf-deep-blue);
}

/* 相关文章 */
.cf-related-posts {
    margin-top: var(--cf-space-2xl);
    padding-top: var(--cf-space-2xl);
    border-top: 2px solid var(--cf-gray-100);
}

.cf-related-title {
    font-size: var(--cf-text-xl);
    font-weight: 700;
    color: var(--cf-gray-900);
    margin-bottom: var(--cf-space-xl);
    padding-left: var(--cf-space-md);
    border-left: 3px solid var(--cf-cyan);
}

.cf-related-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--cf-space-lg);
}

.cf-related-card {
    background: var(--cf-white);
    border-radius: var(--cf-radius-md);
    overflow: hidden;
    border: 1px solid var(--cf-gray-200);
    transition: all var(--cf-transition-normal);
}

.cf-related-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--cf-shadow-lg);
}

.cf-related-card-thumb {
    display: block;
    aspect-ratio: 16/9;
    overflow: hidden;
    background: var(--cf-gray-100);
}

.cf-related-card-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.cf-related-card-img-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--cf-gray-200);
    color: var(--cf-gray-400);
    font-size: 1.5rem;
}

.cf-related-card-body {
    padding: var(--cf-space-md) var(--cf-space-lg);
}

.cf-related-card-title {
    font-size: var(--cf-text-sm);
    font-weight: 600;
    margin-bottom: var(--cf-space-sm);
    line-height: var(--cf-leading-tight);
}

.cf-related-card-title a {
    color: var(--cf-gray-800);
    text-decoration: none;
    transition: color var(--cf-transition-fast);
}

.cf-related-card-title a:hover {
    color: var(--cf-cyan);
}

.cf-related-card-date {
    font-size: var(--cf-text-xs);
    color: var(--cf-gray-400);
}

/* 文章导航 */
.cf-post-nav {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--cf-space-lg);
    margin-top: var(--cf-space-2xl);
    padding-top: var(--cf-space-xl);
    border-top: 1px solid var(--cf-gray-200);
}

.cf-post-nav-label {
    display: flex;
    align-items: center;
    gap: var(--cf-space-xs);
    font-size: var(--cf-text-xs);
    color: var(--cf-gray-400);
    margin-bottom: var(--cf-space-sm);
}

.cf-post-nav-prev a,
.cf-post-nav-next a {
    font-size: var(--cf-text-sm);
    font-weight: 600;
    color: var(--cf-gray-700);
    text-decoration: none;
    transition: color var(--cf-transition-fast);
}

.cf-post-nav-prev a:hover,
.cf-post-nav-next a:hover {
    color: var(--cf-cyan);
}

.cf-post-nav-next {
    text-align: right;
}

/* 侧边栏 */
.cf-single-sidebar {
    position: sticky;
    top: var(--cf-space-xl);
}

/* ==========================================================================
   归档页
   ========================================================================== */
.cf-archive-header {
    margin-bottom: var(--cf-space-2xl);
}

.cf-archive-title {
    font-size: var(--cf-text-3xl);
    font-weight: 700;
    color: var(--cf-gray-900);
    margin-bottom: var(--cf-space-md);
}

.cf-archive-description {
    font-size: var(--cf-text-lg);
    color: var(--cf-gray-500);
}

.cf-archive-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--cf-space-lg);
    margin-bottom: var(--cf-space-2xl);
}

.cf-archive-card {
    background: var(--cf-white);
    border-radius: var(--cf-radius-lg);
    overflow: hidden;
    border: 1px solid var(--cf-gray-200);
    transition: all var(--cf-transition-normal);
}

.cf-archive-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--cf-shadow-lg);
    border-color: var(--cf-cyan);
}

.cf-archive-card-thumb {
    display: block;
    aspect-ratio: 16/9;
    overflow: hidden;
    background: var(--cf-gray-100);
}

.cf-archive-card-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--cf-transition-slow);
}

.cf-archive-card:hover .cf-archive-card-img {
    transform: scale(1.05);
}

.cf-archive-card-img-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--cf-gray-200);
    color: var(--cf-gray-400);
    font-size: 1.5rem;
}

.cf-archive-card-body {
    padding: var(--cf-space-lg);
}

.cf-archive-card-cat {
    display: inline-block;
    font-size: var(--cf-text-xs);
    font-weight: 600;
    color: var(--cf-cyan);
    text-decoration: none;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: var(--cf-space-sm);
}

.cf-archive-card-title {
    font-size: var(--cf-text-lg);
    font-weight: 700;
    margin-bottom: var(--cf-space-md);
    line-height: var(--cf-leading-tight);
}

.cf-archive-card-title a {
    color: var(--cf-gray-900);
    text-decoration: none;
    transition: color var(--cf-transition-fast);
}

.cf-archive-card-title a:hover {
    color: var(--cf-cyan);
}

.cf-archive-card-meta {
    display: flex;
    gap: var(--cf-space-md);
    font-size: var(--cf-text-xs);
    color: var(--cf-gray-400);
    margin-bottom: var(--cf-space-md);
}

.cf-archive-card-meta i {
    margin-right: 3px;
}

.cf-archive-card-excerpt {
    font-size: var(--cf-text-sm);
    color: var(--cf-gray-500);
    line-height: var(--cf-leading-relaxed);
    margin-bottom: var(--cf-space-md);
}

.cf-archive-card-link {
    display: inline-flex;
    align-items: center;
    gap: var(--cf-space-xs);
    font-size: var(--cf-text-sm);
    font-weight: 600;
    color: var(--cf-cyan);
    text-decoration: none;
}

.cf-archive-card-link:hover {
    gap: var(--cf-space-md);
}

.cf-archive-empty {
    text-align: center;
    padding: var(--cf-space-4xl) var(--cf-space-lg);
}

.cf-archive-empty-icon {
    font-size: 4rem;
    color: var(--cf-gray-300);
    margin-bottom: var(--cf-space-lg);
}

.cf-archive-empty h2 {
    font-size: var(--cf-text-2xl);
    color: var(--cf-gray-600);
    margin-bottom: var(--cf-space-md);
}

.cf-archive-empty p {
    color: var(--cf-gray-500);
    margin-bottom: var(--cf-space-xl);
}

/* ==========================================================================
   分页
   ========================================================================== */
.cf-pagination {
    margin-top: var(--cf-space-xl);
}

.cf-pagination-list {
    display: flex;
    justify-content: center;
    gap: var(--cf-space-sm);
    list-style: none;
    padding: 0;
}

.cf-pagination-list li {
    display: flex;
}

.cf-pagination-list a,
.cf-pagination-list span {
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 40px;
    height: 40px;
    padding: 0 var(--cf-space-sm);
    border-radius: var(--cf-radius-md);
    font-size: var(--cf-text-sm);
    font-weight: 500;
    text-decoration: none;
    color: var(--cf-gray-600);
    background: var(--cf-off-white);
    border: 1px solid var(--cf-gray-200);
    transition: all var(--cf-transition-fast);
}

.cf-pagination-list a:hover {
    background: var(--cf-cyan);
    color: var(--cf-white);
    border-color: var(--cf-cyan);
}

.cf-pagination-list .cf-page-active span,
.cf-pagination-list .cf-page-active a {
    background: var(--cf-deep-blue);
    color: var(--cf-white);
    border-color: var(--cf-deep-blue);
}

/* ==========================================================================
   404页面
   ========================================================================== */
.cf-404-main {
    display: flex;
    align-items: center;
    justify-content: center;
}

.cf-404-container {
    max-width: 600px;
    margin: 0 auto;
    padding: var(--cf-space-4xl) var(--cf-space-lg);
}

.cf-404-content {
    text-align: center;
}

.cf-404-visual {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--cf-space-md);
    margin-bottom: var(--cf-space-xl);
}

.cf-404-digit {
    font-size: 8rem;
    font-weight: 900;
    color: var(--cf-deep-blue);
    line-height: 1;
}

.cf-404-flask {
    font-size: 4rem;
    color: var(--cf-cyan);
    animation: cf-hero-pulse 2s ease-in-out infinite;
}

.cf-404-title {
    font-size: var(--cf-text-3xl);
    font-weight: 700;
    color: var(--cf-gray-900);
    margin-bottom: var(--cf-space-md);
}

.cf-404-message {
    font-size: var(--cf-text-base);
    color: var(--cf-gray-500);
    margin-bottom: var(--cf-space-xl);
    line-height: var(--cf-leading-relaxed);
}

.cf-404-search {
    margin-bottom: var(--cf-space-xl);
}

.cf-404-suggestions {
    padding-top: var(--cf-space-xl);
    border-top: 1px solid var(--cf-gray-200);
}

.cf-404-suggestions p {
    font-size: var(--cf-text-sm);
    color: var(--cf-gray-500);
    margin-bottom: var(--cf-space-lg);
}

.cf-404-links {
    display: flex;
    gap: var(--cf-space-md);
    justify-content: center;
    flex-wrap: wrap;
}

/* ==========================================================================
   搜索结果
   ========================================================================== */
.cf-search-header {
    margin-bottom: var(--cf-space-2xl);
}

.cf-search-title {
    font-size: var(--cf-text-2xl);
    font-weight: 700;
    color: var(--cf-gray-900);
    margin-bottom: var(--cf-space-sm);
}

.cf-search-keyword {
    color: var(--cf-cyan);
}

.cf-search-count {
    color: var(--cf-gray-500);
    margin-bottom: var(--cf-space-lg);
}

.cf-search-form-wrap {
    margin-bottom: var(--cf-space-xl);
}

.cf-search-form-inner {
    display: flex;
    border: 2px solid var(--cf-gray-200);
    border-radius: var(--cf-radius-lg);
    overflow: hidden;
    transition: border-color var(--cf-transition-fast);
}

.cf-search-form-inner:focus-within {
    border-color: var(--cf-cyan);
}

.cf-search-input {
    flex: 1;
    padding: 14px var(--cf-space-lg);
    border: none;
    font-size: var(--cf-text-base);
    font-family: var(--cf-font-family);
    color: var(--cf-gray-800);
    background: var(--cf-white);
    outline: none;
}

.cf-search-input::placeholder {
    color: var(--cf-gray-400);
}

.cf-search-submit {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 52px;
    background: var(--cf-cyan);
    color: var(--cf-white);
    border: none;
    cursor: pointer;
    font-size: var(--cf-text-lg);
    transition: background var(--cf-transition-fast);
}

.cf-search-submit:hover {
    background: var(--cf-cyan-dark);
}

.cf-search-results {
    display: flex;
    flex-direction: column;
    gap: var(--cf-space-lg);
    margin-bottom: var(--cf-space-2xl);
}

.cf-search-result-card {
    display: flex;
    gap: var(--cf-space-lg);
    padding: var(--cf-space-lg);
    border: 1px solid var(--cf-gray-200);
    border-radius: var(--cf-radius-lg);
    transition: all var(--cf-transition-fast);
    background: var(--cf-white);
}

.cf-search-result-card:hover {
    border-color: var(--cf-cyan);
    box-shadow: var(--cf-shadow-md);
}

.cf-search-result-thumb {
    flex-shrink: 0;
    width: 120px;
    height: 90px;
    border-radius: var(--cf-radius-md);
    overflow: hidden;
    background: var(--cf-gray-100);
}

.cf-search-result-thumb a {
    display: block;
    width: 100%;
    height: 100%;
}

.cf-search-result-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.cf-search-result-img-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--cf-gray-200);
    color: var(--cf-gray-400);
    font-size: 1.5rem;
}

.cf-search-result-body {
    flex: 1;
    min-width: 0;
}

.cf-search-result-title {
    font-size: var(--cf-text-lg);
    font-weight: 700;
    margin-bottom: var(--cf-space-sm);
}

.cf-search-result-title a {
    color: var(--cf-gray-900);
    text-decoration: none;
    transition: color var(--cf-transition-fast);
}

.cf-search-result-title a:hover {
    color: var(--cf-cyan);
}

.cf-search-result-meta {
    display: flex;
    gap: var(--cf-space-md);
    font-size: var(--cf-text-xs);
    color: var(--cf-gray-400);
    margin-bottom: var(--cf-space-sm);
}

.cf-search-result-excerpt {
    font-size: var(--cf-text-sm);
    color: var(--cf-gray-500);
    line-height: var(--cf-leading-relaxed);
    margin-bottom: var(--cf-space-sm);
}

.cf-search-result-link {
    font-size: var(--cf-text-sm);
    font-weight: 600;
    color: var(--cf-cyan);
    text-decoration: none;
}

.cf-search-result-link:hover {
    text-decoration: underline;
}

/* 搜索无结果 */
.cf-search-empty {
    text-align: center;
    padding: var(--cf-space-3xl) var(--cf-space-lg);
}

.cf-search-empty-icon {
    position: relative;
    display: inline-block;
    font-size: 4rem;
    color: var(--cf-gray-300);
    margin-bottom: var(--cf-space-lg);
}

.cf-search-empty-icon span {
    position: absolute;
    top: -5px;
    right: -15px;
    font-size: 2.5rem;
    color: var(--cf-orange);
    font-weight: 900;
}

.cf-search-empty h2 {
    font-size: var(--cf-text-2xl);
    color: var(--cf-gray-700);
    margin-bottom: var(--cf-space-md);
}

.cf-search-empty-msg {
    color: var(--cf-gray-500);
    margin-bottom: var(--cf-space-lg);
}

.cf-search-empty-tips {
    display: inline-block;
    text-align: left;
    list-style: none;
    margin-bottom: var(--cf-space-xl);
    color: var(--cf-gray-500);
    font-size: var(--cf-text-sm);
}

.cf-search-empty-tips li {
    padding: var(--cf-space-xs) 0;
    padding-left: var(--cf-space-lg);
    position: relative;
}

.cf-search-empty-tips li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--cf-cyan);
    font-weight: 900;
}

.cf-search-empty-actions {
    display: flex;
    gap: var(--cf-space-md);
    justify-content: center;
    flex-wrap: wrap;
}

/* ==========================================================================
   评论区域
   ========================================================================== */
.cf-comments-area {
    margin-top: var(--cf-space-2xl);
    padding-top: var(--cf-space-2xl);
    border-top: 1px solid var(--cf-gray-200);
}

/* ==========================================================================
   WordPress核心样式适配
   ========================================================================== */
/* 对齐 */
.alignleft { float: left; margin-right: var(--cf-space-lg); margin-bottom: var(--cf-space-md); }
.alignright { float: right; margin-left: var(--cf-space-lg); margin-bottom: var(--cf-space-md); }
.aligncenter { display: block; margin-left: auto; margin-right: auto; margin-bottom: var(--cf-space-md); }
.alignwide { margin-left: calc(-50vw + 50% + var(--cf-sidebar-width) / 2); margin-right: calc(-50vw + 50% + var(--cf-sidebar-width) / 2); max-width: none; }
.alignfull { margin-left: calc(-50vw + 50% + var(--cf-sidebar-width) / 2); margin-right: calc(-50vw + 50% + var(--cf-sidebar-width) / 2); max-width: none; width: auto; }

/* 辅助类 */
.screen-reader-text {
    border: 0;
    clip: rect(1px, 1px, 1px, 1px);
    clip-path: inset(50%);
    height: 1px;
    margin: -1px;
    overflow: hidden;
    padding: 0;
    position: absolute;
    width: 1px;
    word-wrap: normal !important;
}

.screen-reader-text:focus {
    background-color: var(--cf-white);
    clip: auto !important;
    clip-path: none;
    color: var(--cf-gray-800);
    display: block;
    font-size: var(--cf-text-sm);
    font-weight: 600;
    height: auto;
    left: 5px;
    line-height: normal;
    padding: 15px 23px 14px;
    text-decoration: none;
    top: 5px;
    width: auto;
    z-index: 100000;
}

.wp-caption { max-width: 100%; margin-bottom: var(--cf-space-lg); }
.wp-caption-text { font-size: var(--cf-text-sm); color: var(--cf-gray-500); text-align: center; margin-top: var(--cf-space-sm); }
.gallery-caption { font-size: var(--cf-text-xs); }
.bypostauthor {}
.sticky .cf-post-card-title::before {
    content: '\f02e';
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    color: var(--cf-orange);
    margin-right: var(--cf-space-xs);
}

/* ==========================================================================
   响应式设计 - 平板 (768px - 1024px)
   ========================================================================== */
@media (max-width: 1024px) {
    :root {
        --cf-sidebar-width: 240px;
    }

    .cf-services-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .cf-stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .cf-clients-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .cf-footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* ==========================================================================
   响应式设计 - 移动端 (768px 及以下)
   关键: 导航变顶部栏
   ========================================================================== */
@media (max-width: 768px) {
    :root {
        --cf-sidebar-width: 0;
    }

    /* 显示移动端顶栏 */
    .cf-mobile-bar {
        display: flex;
    }

    /* 左侧导航隐藏，点击时滑出 */
    .cf-sidebar {
        transform: translateX(-100%);
        width: 280px;
        z-index: 101;
    }

    .cf-sidebar.cf-sidebar--open {
        transform: translateX(0);
    }

    .cf-sidebar-overlay.cf-sidebar-overlay--visible {
        display: block;
    }

    /* 主内容区不再需要margin-left */
    .cf-main {
        margin-left: 0;
        padding-top: 56px;
    }

    /* Hero全宽 */
    .cf-hero {
        min-height: calc(100vh - 56px);
        min-height: calc(100dvh - 56px);
    }

    /* 关于我们 */
    .cf-about-grid {
        grid-template-columns: 1fr;
    }

    /* 优势3列变2列 */
    .cf-advantages-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    /* 文章3列变2列 */
    .cf-posts-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    /* 页面布局 */
    .cf-page-layout,
    .cf-single-layout {
        grid-template-columns: 1fr;
    }

    .cf-page-sidebar,
    .cf-single-sidebar {
        position: static;
    }

    /* 归档3列变2列 */
    .cf-archive-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    /* 相关文章3列变2列 */
    .cf-related-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    /* 客户6列变3列 */
    .cf-clients-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    /* 搜索结果卡片 */
    .cf-search-result-card {
        flex-direction: column;
    }

    .cf-search-result-thumb {
        width: 100%;
        height: 180px;
    }

    /* 浮动按钮移动端适配 */
    .cf-float-contact {
        bottom: 90px;
        right: var(--cf-space-md);
    }

    .cf-back-top {
        bottom: var(--cf-space-md);
        right: var(--cf-space-md);
        width: 40px;
        height: 40px;
    }
}

/* ==========================================================================
   响应式设计 - 小屏手机 (480px 及以下)
   ========================================================================== */
@media (max-width: 480px) {
    /* 全部单列 */
    .cf-stats-grid,
    .cf-services-grid,
    .cf-advantages-grid,
    .cf-posts-grid,
    .cf-archive-grid,
    .cf-related-grid {
        grid-template-columns: 1fr;
    }

    .cf-clients-grid {
        grid-template-columns: repeat(2, 1fr);
    }

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

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

    .cf-hero-subtitle {
        font-size: var(--cf-text-base);
    }

    .cf-hero-actions {
        flex-direction: column;
        align-items: center;
    }

    .cf-hero-actions .cf-btn {
        width: 100%;
        justify-content: center;
    }

    .cf-cta-banner-actions {
        flex-direction: column;
        align-items: center;
    }

    .cf-cta-banner-actions .cf-btn {
        width: 100%;
        justify-content: center;
    }

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

    .cf-post-nav {
        grid-template-columns: 1fr;
    }

    .cf-post-nav-next {
        text-align: left;
    }

    .cf-search-result-card {
        padding: var(--cf-space-md);
    }

    .cf-404-digit {
        font-size: 5rem;
    }

    .cf-404-flask {
        font-size: 2.5rem;
    }

    .cf-float-contact {
        bottom: 80px;
        right: var(--cf-space-md);
    }

    .cf-float-btn {
        padding: 8px 14px;
        font-size: var(--cf-text-xs);
    }
}

/* ==========================================================================
   打印样式
   ========================================================================== */
@media print {
    .cf-sidebar,
    .cf-mobile-bar,
    .cf-float-contact,
    .cf-back-top,
    .cf-footer,
    .cf-hero-scroll,
    .cf-cta-banner,
    .cf-sidebar-overlay,
    .cf-search-form-wrap,
    .cf-comments-area,
    .cf-post-nav,
    .cf-related-posts {
        display: none !important;
    }

    .cf-main {
        margin-left: 0 !important;
        padding-top: 0 !important;
    }

    body {
        font-size: 12pt;
        line-height: 1.5;
        color: #000;
        background: #fff;
    }

    a {
        color: #000;
        text-decoration: none;
    }

    .cf-article-title,
    .cf-page-title {
        font-size: 18pt;
    }

    img {
        max-width: 100% !important;
        page-break-inside: avoid;
    }

    p, h2, h3 {
        orphans: 3;
        widows: 3;
    }

    h2, h3 {
        page-break-after: avoid;
    }
}