/**
 * 企业 Alpha 主题核心样式表 (Modern Enterprise Edition)
 * 支持多端自适应、模块化设计、动态主题色彩与交互动效
 */

:root {
    --qa-primary: #165dff;
    --qa-primary-hover: #0e4cd1;
    --qa-primary-light: rgba(22, 93, 255, 0.08);
    --qa-primary-glow: rgba(22, 93, 255, 0.25);
    --qa-dark: #0b1320;
    --qa-dark-surface: #131d2e;
    --qa-text-heading: #0f172a;
    --qa-text: #334155;
    --qa-muted: #64748b;
    --qa-light-muted: #94a3b8;
    --qa-bg: #f8fafc;
    --qa-bg-alt: #f1f5f9;
    --qa-card-bg: #ffffff;
    --qa-line: #e2e8f0;
    --qa-line-light: #f1f5f9;
    --qa-radius-sm: 8px;
    --qa-radius-md: 12px;
    --qa-radius-lg: 18px;
    --qa-radius-xl: 24px;
    --qa-shadow-sm: 0 2px 8px -2px rgba(15, 23, 42, 0.06), 0 1px 4px -1px rgba(15, 23, 42, 0.04);
    --qa-shadow-md: 0 12px 28px -6px rgba(15, 23, 42, 0.08), 0 4px 12px -2px rgba(15, 23, 42, 0.03);
    --qa-shadow-lg: 0 24px 48px -12px rgba(15, 23, 42, 0.12), 0 8px 24px -4px rgba(15, 23, 42, 0.04);
    --qa-transition: all 0.26s cubic-bezier(0.16, 1, 0.3, 1);
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    color: var(--qa-text);
    font: 15px/1.8 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    background: #fff;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    -webkit-font-smoothing: antialiased;
}

body > main {
    flex: 1 0 auto;
}

a {
    color: inherit;
    text-decoration: none;
    transition: var(--qa-transition);
}

img {
    display: block;
    max-width: 100%;
    height: auto;
}

.qa-container {
    width: min(1200px, calc(100% - 36px));
    margin: 0 auto;
}

/* ================= 按钮与通用组件 ================= */
.qa-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 22px;
    font-size: 14px;
    font-weight: 600;
    border-radius: var(--qa-radius-sm);
    border: 1px solid transparent;
    cursor: pointer;
    transition: var(--qa-transition);
    white-space: nowrap;
}

.qa-btn-primary {
    background: var(--qa-primary);
    color: #fff;
    box-shadow: 0 4px 14px var(--qa-primary-glow);
}

.qa-btn-primary:hover {
    background: var(--qa-primary-hover);
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px var(--qa-primary-glow);
}

.qa-btn-outline {
    background: rgba(255, 255, 255, 0.1);
    color: #fff;
    border-color: rgba(255, 255, 255, 0.3);
    backdrop-filter: blur(8px);
}

.qa-btn-outline:hover {
    background: rgba(255, 255, 255, 0.2);
    color: #fff;
    border-color: #fff;
    transform: translateY(-2px);
}

.qa-btn-white {
    background: #fff;
    color: var(--qa-text-heading);
    box-shadow: 0 4px 14px rgba(0, 0, 0, 0.1);
}

.qa-btn-white:hover {
    background: #f8fafc;
    color: var(--qa-primary);
    transform: translateY(-2px);
}

.qa-btn-lg {
    padding: 14px 28px;
    font-size: 16px;
    border-radius: var(--qa-radius-md);
}

.qa-btn-sm {
    padding: 7px 16px;
    font-size: 13px;
    border-radius: var(--qa-radius-sm);
}

.qa-btn-block {
    display: flex;
    width: 100%;
}

/* ================= 顶部信息栏 (Topbar) ================= */
.qa-topbar {
    background: #09101d;
    color: #94a3b8;
    font-size: 13px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.qa-topbar-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 38px;
}

.qa-topbar-left {
    display: flex;
    align-items: center;
}

.qa-topbar-notice {
    display: flex;
    align-items: center;
    gap: 8px;
    color: #cbd5e1;
}

.qa-topbar-notice i {
    color: var(--qa-primary);
}

.qa-topbar-right {
    display: flex;
    align-items: center;
    gap: 20px;
}

.qa-topbar-item {
    display: flex;
    align-items: center;
    gap: 6px;
}

.qa-topbar-item:hover {
    color: #fff;
}

.qa-topbar-item i {
    color: var(--qa-primary);
}

/* ================= 头部导航 (Header & Nav) ================= */
.qa-header {
    position: sticky;
    top: 0;
    z-index: 99;
    background: rgba(255, 255, 255, 0.94);
    border-bottom: 1px solid var(--qa-line-light);
    backdrop-filter: blur(16px);
    transition: var(--qa-transition);
}

.qa-header.qa-header-scrolled {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: 0 4px 20px rgba(15, 23, 42, 0.06);
    border-color: var(--qa-line);
}

.qa-header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 76px;
}

.qa-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 22px;
    font-weight: 800;
    color: var(--qa-text-heading);
    letter-spacing: -0.3px;
}

.qa-logo-badge {
    width: 36px;
    height: 36px;
    border-radius: 10px;
    background: var(--qa-primary);
    color: #fff;
    display: grid;
    place-items: center;
    font-size: 18px;
    box-shadow: 0 4px 12px var(--qa-primary-glow);
}

.qa-logo img {
    height: 42px;
    width: auto;
}

.qa-header-actions {
    display: flex;
    align-items: center;
    gap: 20px;
}

.qa-nav-list {
    display: flex;
    align-items: center;
    gap: 28px;
    margin: 0;
    padding: 0;
    list-style: none;
}

.qa-nav-list > li > a {
    display: flex;
    align-items: center;
    gap: 5px;
    padding: 8px 4px;
    font-size: 15px;
    font-weight: 600;
    color: var(--qa-text);
    position: relative;
}

.qa-nav-list > li > a::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--qa-primary);
    border-radius: 2px;
    transform: translateX(-50%);
    transition: var(--qa-transition);
}

.qa-nav-list > li > a:hover {
    color: var(--qa-primary);
}

.qa-nav-list > li > a:hover::after {
    width: 100%;
}

.qa-nav-arrow {
    font-size: 11px;
    color: var(--qa-muted);
    transition: var(--qa-transition);
}

.qa-nav-dropdown {
    position: relative;
}

.qa-nav-dropdown:hover .qa-nav-arrow {
    transform: rotate(180deg);
    color: var(--qa-primary);
}

.qa-submenu {
    position: absolute;
    left: 0;
    top: calc(100% + 12px);
    display: none;
    min-width: 180px;
    margin: 0;
    padding: 8px;
    list-style: none;
    background: #fff;
    border: 1px solid var(--qa-line);
    border-radius: var(--qa-radius-md);
    box-shadow: var(--qa-shadow-lg);
    animation: qaSubMenuFade 0.2s ease;
}

@keyframes qaSubMenuFade {
    from {
        opacity: 0;
        transform: translateY(8px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.qa-submenu::before {
    content: '';
    position: absolute;
    top: -12px;
    left: 0;
    right: 0;
    height: 12px;
}

.qa-submenu a {
    display: block;
    padding: 9px 14px;
    font-size: 14px;
    color: var(--qa-text);
    border-radius: var(--qa-radius-sm);
}

.qa-submenu a:hover {
    background: var(--qa-primary-light);
    color: var(--qa-primary);
}

.qa-nav-dropdown:hover .qa-submenu {
    display: block;
}

.qa-nav-auth a {
    color: var(--qa-muted) !important;
}

.qa-nav-auth a:hover {
    color: var(--qa-primary) !important;
}

.qa-menu-btn {
    display: none;
    border: 0;
    font-size: 20px;
    background: var(--qa-bg-alt);
    color: var(--qa-text-heading);
    cursor: pointer;
    width: 42px;
    height: 42px;
    border-radius: var(--qa-radius-sm);
    transition: var(--qa-transition);
}

.qa-menu-btn:hover {
    background: var(--qa-line);
}

.qa-mobile-nav-header,
.qa-mobile-cta {
    display: none;
}

/* ================= 首页首屏 (Hero Section) ================= */
.qa-hero {
    position: relative;
    overflow: hidden;
    background: linear-gradient(135deg, #09101d 0%, #0e1b2f 50%, #091322 100%) center/cover no-repeat;
    color: #fff;
    padding: 240px 0 260px;
    min-height: 720px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.qa-hero-glow-1 {
    position: absolute;
    top: -120px;
    right: -100px;
    width: 500px;
    height: 500px;
    border-radius: 50%;
    background: radial-gradient(circle, var(--qa-primary-glow) 0%, rgba(22, 93, 255, 0) 70%);
    filter: blur(60px);
    pointer-events: none;
}

.qa-hero-glow-2 {
    position: absolute;
    bottom: -150px;
    left: -100px;
    width: 450px;
    height: 450px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(14, 165, 233, 0.18) 0%, rgba(14, 165, 233, 0) 70%);
    filter: blur(60px);
    pointer-events: none;
}

.qa-hero-inner {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    max-width: 920px;
    margin: 0 auto;
    position: relative;
    z-index: 2;
}

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

.qa-hero-badge {
    display: inline-flex;
    align-items: center;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.15);
    padding: 6px 16px;
    border-radius: 999px;
    font-size: 13px;
    color: #e2e8f0;
    margin-bottom: 22px;
    backdrop-filter: blur(8px);
}

.qa-hero-title {
    margin: 0 0 20px;
    color: #fff;
    font-size: clamp(32px, 4vw, 52px);
    font-weight: 800;
    line-height: 1.25;
    letter-spacing: -0.5px;
}

.qa-hero-desc {
    margin: 0 0 36px;
    color: #cbd5e1;
    font-size: 16px;
    line-height: 1.8;
    max-width: 720px;
}

.qa-hero-actions {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 16px;
}

.qa-hero-visual {
    display: flex;
    justify-content: center;
    position: relative;
}

.qa-hero-card-stack {
    position: relative;
    width: 100%;
    max-width: 440px;
}

.qa-hero-glass-card {
    background: rgba(255, 255, 255, 0.07);
    border: 1px solid rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(16px);
    border-radius: var(--qa-radius-lg);
    padding: 24px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.35);
}

.qa-glass-header {
    display: flex;
    align-items: center;
    gap: 8px;
    padding-bottom: 16px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.qa-glass-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
}
.qa-glass-dot.red { background: #ff5f56; }
.qa-glass-dot.yellow { background: #ffbd2e; }
.qa-glass-dot.green { background: #27c93f; }

.qa-glass-title {
    margin-left: auto;
    font-size: 12px;
    color: #94a3b8;
}

.qa-glass-body {
    padding-top: 18px;
}

.qa-glass-metric {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
}

.qa-metric-label {
    font-size: 13px;
    color: #94a3b8;
}

.qa-metric-val {
    font-size: 13px;
    font-weight: 600;
    color: #4ade80;
    display: flex;
    align-items: center;
    gap: 6px;
}

.qa-glass-bars {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.qa-glass-bars span {
    height: 8px;
    border-radius: 99px;
    background: linear-gradient(90deg, var(--qa-primary), rgba(255, 255, 255, 0.3));
}

.qa-hero-float-tag {
    position: absolute;
    background: #fff;
    color: var(--qa-text-heading);
    padding: 10px 18px;
    border-radius: 999px;
    font-size: 13px;
    font-weight: 700;
    box-shadow: var(--qa-shadow-lg);
    display: flex;
    align-items: center;
    gap: 8px;
    animation: qaFloat 3.5s ease-in-out infinite alternate;
}

.qa-hero-float-tag i {
    color: var(--qa-primary);
}

.qa-hero-float-tag.tag-1 {
    top: -18px;
    right: -12px;
    animation-delay: 0s;
}

.qa-hero-float-tag.tag-2 {
    bottom: -18px;
    left: -16px;
    animation-delay: 1.2s;
}

.qa-hero-float-tag.tag-3 {
    bottom: 60px;
    right: -24px;
    animation-delay: 2s;
}

@keyframes qaFloat {
    0% { transform: translateY(0px); }
    100% { transform: translateY(-10px); }
}

/* ================= 统计数据 (Stats Section) ================= */
.qa-stats-section {
    background: #fff;
    padding: 12px 0 0;
    position: relative;
    z-index: 5;
    margin-top: -42px;
}

.qa-stats-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 18px;
}

.qa-stat-card {
    background: #fff;
    border: 1px solid var(--qa-line);
    border-radius: var(--qa-radius-md);
    padding: 22px 20px;
    display: flex;
    align-items: center;
    gap: 16px;
    box-shadow: var(--qa-shadow-sm);
    transition: var(--qa-transition);
}

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

.qa-stat-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    background: var(--qa-primary-light);
    color: var(--qa-primary);
    display: grid;
    place-items: center;
    font-size: 20px;
    flex-shrink: 0;
}

.qa-stat-info {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.qa-stat-num {
    font-size: clamp(24px, 2.2vw, 32px);
    font-weight: 800;
    color: var(--qa-text-heading);
    line-height: 1.15;
    letter-spacing: -0.5px;
    margin: 0 0 6px;
}

.qa-stat-title {
    font-size: 14px;
    font-weight: 600;
    color: var(--qa-text);
    line-height: 1.4;
    margin: 0 0 3px;
}

.qa-stat-sub {
    font-size: 12px;
    color: var(--qa-muted);
    line-height: 1.4;
    margin: 0;
}

/* ================= 板块公共标题 (Section Titles) ================= */
.qa-section {
    padding: 84px 0;
}

.qa-title-block {
    text-align: center;
    max-width: 680px;
    margin: 0 auto 48px;
}

.qa-section-tag {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 1px;
    color: var(--qa-primary);
    background: var(--qa-primary-light);
    padding: 4px 12px;
    border-radius: 999px;
    margin-bottom: 12px;
}

.qa-section-title {
    margin: 0 0 12px;
    font-size: clamp(26px, 3.2vw, 36px);
    font-weight: 800;
    color: var(--qa-text-heading);
    line-height: 1.3;
    letter-spacing: -0.4px;
}

.qa-section-desc {
    margin: 0;
    color: var(--qa-muted);
    font-size: 15px;
    line-height: 1.7;
}

/* ================= 关于我们 (About Section) ================= */
.qa-about-section {
    background: #fff;
}

.qa-about-wrapper {
    display: grid;
    grid-template-columns: 1fr 1.1fr;
    gap: 56px;
    align-items: center;
}

.qa-about-visual {
    position: relative;
}

.qa-about-img-box {
    position: relative;
    border-radius: var(--qa-radius-lg);
    overflow: hidden;
    box-shadow: var(--qa-shadow-lg);
}

.qa-about-img {
    width: 100%;
    aspect-ratio: 4/3;
    object-fit: cover;
    transition: var(--qa-transition);
}

.qa-about-img-box:hover .qa-about-img {
    transform: scale(1.02);
}

.qa-about-badge {
    position: absolute;
    bottom: 20px;
    left: 20px;
    background: rgba(11, 19, 32, 0.85);
    border: 1px solid rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(12px);
    padding: 14px 20px;
    border-radius: var(--qa-radius-md);
    color: #fff;
    display: flex;
    flex-direction: column;
    box-shadow: var(--qa-shadow-md);
}

.qa-badge-years {
    font-size: 26px;
    font-weight: 800;
    color: #ffb800;
}

.qa-badge-txt {
    font-size: 12px;
    color: #e2e8f0;
}

.qa-about-content .qa-section-tag {
    margin-bottom: 12px;
}

.qa-about-content .qa-section-title {
    text-align: left;
    margin-bottom: 16px;
}

.qa-about-desc p {
    color: var(--qa-text);
    font-size: 15px;
    line-height: 1.8;
    margin: 0 0 12px;
}

.qa-about-checklist {
    list-style: none;
    padding: 0;
    margin: 20px 0 28px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

.qa-about-checklist li {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    font-weight: 600;
    color: var(--qa-text-heading);
}

.qa-about-checklist li i {
    color: var(--qa-primary);
    font-size: 16px;
}

.qa-about-footer {
    display: flex;
    align-items: center;
    gap: 24px;
}

.qa-about-qr-card {
    display: flex;
    align-items: center;
    gap: 12px;
    background: var(--qa-bg);
    border: 1px solid var(--qa-line);
    padding: 8px 14px;
    border-radius: var(--qa-radius-sm);
}

.qa-about-qr-card img {
    width: 48px;
    height: 48px;
    border-radius: 6px;
}

.qa-about-qr-card span {
    font-size: 12px;
    color: var(--qa-muted);
    max-width: 110px;
    line-height: 1.4;
}

/* ================= 服务板块 (Services) ================= */
.qa-service-section {
    background: var(--qa-bg);
}

.qa-service-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 24px;
}

.qa-service-card {
    background: #fff;
    border: 1px solid var(--qa-line-light);
    border-radius: var(--qa-radius-md);
    padding: 32px 26px 26px;
    transition: var(--qa-transition);
    display: flex;
    flex-direction: column;
    position: relative;
}

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

.qa-service-icon-box {
    width: 54px;
    height: 54px;
    border-radius: 14px;
    background: var(--qa-primary-light);
    color: var(--qa-primary);
    display: grid;
    place-items: center;
    font-size: 22px;
    margin-bottom: 20px;
    transition: var(--qa-transition);
}

.qa-service-card:hover .qa-service-icon-box {
    background: var(--qa-primary);
    color: #fff;
    box-shadow: 0 8px 20px var(--qa-primary-glow);
}

.qa-service-name {
    margin: 0 0 10px;
    font-size: 19px;
    font-weight: 700;
    color: var(--qa-text-heading);
}

.qa-service-excerpt {
    margin: 0 0 20px;
    color: var(--qa-muted);
    font-size: 14px;
    line-height: 1.7;
    flex: 1;
}

.qa-service-link {
    font-size: 14px;
    font-weight: 600;
    color: var(--qa-primary);
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.qa-service-link i {
    transition: var(--qa-transition);
}

.qa-service-card:hover .qa-service-link i {
    transform: translateX(4px);
}

/* ================= 核心优势 (Core Advantages & Eco) ================= */
.qa-eco-section {
    background: #fff;
}

.qa-eco-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
}

.qa-eco-card {
    background: var(--qa-bg);
    border: 1px solid var(--qa-line);
    border-radius: var(--qa-radius-md);
    padding: 28px 22px;
    transition: var(--qa-transition);
}

.qa-eco-card:hover {
    background: #fff;
    border-color: var(--qa-primary);
    transform: translateY(-4px);
    box-shadow: var(--qa-shadow-md);
}

.qa-eco-icon {
    width: 46px;
    height: 46px;
    border-radius: 12px;
    background: #fff;
    border: 1px solid var(--qa-line);
    color: var(--qa-primary);
    display: grid;
    place-items: center;
    font-size: 18px;
    margin-bottom: 16px;
    box-shadow: var(--qa-shadow-sm);
}

.qa-eco-card:hover .qa-eco-icon {
    background: var(--qa-primary);
    color: #fff;
    border-color: var(--qa-primary);
}

.qa-eco-card h4 {
    margin: 0 0 8px;
    font-size: 17px;
    font-weight: 700;
    color: var(--qa-text-heading);
}

.qa-eco-card p {
    margin: 0;
    color: var(--qa-muted);
    font-size: 14px;
    line-height: 1.7;
}

/* ================= 发展历程与荣誉 (Milestones) ================= */
.qa-history-section {
    background: var(--qa-bg);
}

.qa-history-timeline {
    display: grid;
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 16px;
    position: relative;
}

.qa-history-node {
    background: #fff;
    border: 1px solid var(--qa-line);
    border-radius: var(--qa-radius-md);
    padding: 24px 18px;
    display: flex;
    flex-direction: column;
    position: relative;
    transition: var(--qa-transition);
}

.qa-history-node:hover {
    border-color: var(--qa-primary);
    transform: translateY(-4px);
    box-shadow: var(--qa-shadow-md);
}

.qa-history-badge {
    display: inline-block;
    background: var(--qa-primary);
    color: #fff;
    font-size: 13px;
    font-weight: 800;
    padding: 4px 12px;
    border-radius: 999px;
    align-self: flex-start;
    margin-bottom: 14px;
    box-shadow: 0 3px 8px var(--qa-primary-glow);
}

.qa-history-body h4 {
    margin: 0 0 8px;
    font-size: 16px;
    font-weight: 700;
    color: var(--qa-text-heading);
}

.qa-history-body p {
    margin: 0;
    color: var(--qa-muted);
    font-size: 13px;
    line-height: 1.65;
}

/* ================= 成功案例 (Cases) ================= */
.qa-case-section {
    background: #fff;
}

.qa-case-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 24px;
}

.qa-case-card {
    background: #fff;
    border: 1px solid var(--qa-line);
    border-radius: var(--qa-radius-md);
    overflow: hidden;
    transition: var(--qa-transition);
    display: flex;
    flex-direction: column;
}

.qa-case-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--qa-shadow-lg);
    border-color: var(--qa-primary);
}

.qa-case-thumb {
    position: relative;
    aspect-ratio: 16/10;
    overflow: hidden;
    background: #1e293b;
}

.qa-case-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}

.qa-case-card:hover .qa-case-thumb img {
    transform: scale(1.06);
}

.qa-case-placeholder {
    width: 100%;
    height: 100%;
    display: grid;
    place-items: center;
    color: #94a3b8;
    font-size: 14px;
}

.qa-case-tag {
    position: absolute;
    top: 14px;
    left: 14px;
    background: rgba(11, 19, 32, 0.85);
    color: #fff;
    font-size: 12px;
    font-weight: 600;
    padding: 4px 10px;
    border-radius: 6px;
    backdrop-filter: blur(8px);
}

.qa-case-body {
    padding: 22px;
    display: flex;
    flex-direction: column;
    flex: 1;
}

.qa-case-body h3 {
    margin: 0 0 10px;
    font-size: 18px;
    font-weight: 700;
    color: var(--qa-text-heading);
    line-height: 1.4;
}

.qa-case-body p {
    margin: 0 0 16px;
    color: var(--qa-muted);
    font-size: 14px;
    line-height: 1.7;
    flex: 1;
}

.qa-case-more {
    font-size: 13px;
    font-weight: 600;
    color: var(--qa-primary);
    display: flex;
    align-items: center;
    gap: 6px;
}

/* ================= 新闻资讯 (News Section) ================= */
.qa-news-section {
    background: var(--qa-bg);
}

.qa-news-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 24px;
}

.qa-news-card {
    background: #fff;
    border: 1px solid var(--qa-line-light);
    border-radius: var(--qa-radius-md);
    overflow: hidden;
    box-shadow: var(--qa-shadow-sm);
    transition: var(--qa-transition);
    display: flex;
    flex-direction: column;
}

.qa-news-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--qa-shadow-md);
    border-color: var(--qa-line);
}

.qa-news-cover-link {
    display: block;
    position: relative;
    aspect-ratio: 16/9;
    background: #1e293b;
    overflow: hidden;
}

.qa-news-cover-link img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}

.qa-news-card:hover .qa-news-cover-link img {
    transform: scale(1.05);
}

.qa-news-placeholder {
    width: 100%;
    height: 100%;
    display: grid;
    place-items: center;
    color: #94a3b8;
    font-size: 14px;
}

.qa-news-date {
    position: absolute;
    bottom: 12px;
    left: 12px;
    background: rgba(11, 19, 32, 0.85);
    color: #fff;
    font-size: 12px;
    padding: 3px 10px;
    border-radius: 6px;
    backdrop-filter: blur(8px);
}

.qa-news-content {
    padding: 20px;
    display: flex;
    flex-direction: column;
    flex: 1;
}

.qa-news-meta {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 13px;
    color: var(--qa-muted);
    margin-bottom: 10px;
}

.qa-news-content h3 {
    margin: 0 0 10px;
    font-size: 17px;
    font-weight: 700;
    line-height: 1.45;
}

.qa-news-content h3 a:hover {
    color: var(--qa-primary);
}

.qa-news-content p {
    margin: 0 0 16px;
    color: var(--qa-muted);
    font-size: 14px;
    line-height: 1.7;
    flex: 1;
}

.qa-news-readmore {
    font-size: 13px;
    font-weight: 600;
    color: var(--qa-primary);
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

/* ================= 专家团队 (Team) ================= */
.qa-team-section {
    background: #fff;
}

.qa-team-grid {
    display: grid;
    grid-template-columns: repeat(6, minmax(0, 1fr));
    gap: 16px;
}

.qa-team-card {
    background: var(--qa-bg);
    border: 1px solid var(--qa-line);
    border-radius: var(--qa-radius-md);
    padding: 24px 14px 18px;
    text-align: center;
    transition: var(--qa-transition);
    display: flex;
    flex-direction: column;
    align-items: center;
}

.qa-team-card:hover {
    background: #fff;
    border-color: var(--qa-primary);
    transform: translateY(-4px);
    box-shadow: var(--qa-shadow-md);
}

.qa-team-avatar-box {
    width: 68px;
    height: 68px;
    border-radius: 50%;
    overflow: hidden;
    background: var(--qa-primary-light);
    border: 2px solid #fff;
    box-shadow: var(--qa-shadow-sm);
    display: grid;
    place-items: center;
    margin-bottom: 14px;
}

.qa-team-avatar-box img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.qa-team-initial {
    font-size: 24px;
    font-weight: 800;
    color: var(--qa-primary);
}

.qa-team-card h4 {
    margin: 0 0 6px;
    font-size: 16px;
    font-weight: 700;
    color: var(--qa-text-heading);
}

.qa-team-card p {
    margin: 0;
    font-size: 13px;
    color: var(--qa-muted);
    line-height: 1.5;
}

/* ================= 合作伙伴 (Partners) ================= */
.qa-partner-section {
    background: var(--qa-bg);
}

.qa-partner-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 16px;
}

.qa-partner-item {
    background: #fff;
    border: 1px solid var(--qa-line);
    border-radius: var(--qa-radius-sm);
    padding: 16px 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    font-size: 14px;
    font-weight: 600;
    color: var(--qa-text);
    min-height: 64px;
    transition: var(--qa-transition);
}

.qa-partner-item:hover {
    border-color: var(--qa-primary);
    color: var(--qa-primary);
    transform: translateY(-2px);
    box-shadow: var(--qa-shadow-sm);
}

.qa-partner-item i {
    font-size: 18px;
    color: var(--qa-muted);
}

.qa-partner-item:hover i {
    color: var(--qa-primary);
}

/* ================= 底部 CTA 横幅 ================= */
.qa-cta-section {
    background: #fff;
    padding: 20px 0 80px;
}

.qa-cta-box {
    background: linear-gradient(135deg, var(--qa-primary) 0%, var(--qa-primary-hover) 100%);
    border-radius: var(--qa-radius-xl);
    padding: 56px 48px;
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 36px;
    box-shadow: 0 20px 40px var(--qa-primary-glow);
}

.qa-cta-content h2 {
    margin: 0 0 10px;
    font-size: clamp(24px, 2.6vw, 32px);
    font-weight: 800;
    color: #fff;
}

.qa-cta-content p {
    margin: 0;
    color: rgba(255, 255, 255, 0.9);
    font-size: 16px;
    max-width: 580px;
}

.qa-cta-actions {
    display: flex;
    align-items: center;
    gap: 18px;
    flex-shrink: 0;
}

.qa-cta-phone-link {
    color: #fff;
    font-size: 18px;
    font-weight: 800;
    display: flex;
    align-items: center;
    gap: 8px;
}

.qa-cta-phone-link:hover {
    text-decoration: underline;
}

/* ================= 联系我们板块 (Contact) ================= */
.qa-contact-section {
    background: var(--qa-bg);
}

.qa-contact-grid {
    display: grid;
    grid-template-columns: 1.6fr 1fr;
    gap: 24px;
}

.qa-contact-main-card,
.qa-contact-side-card {
    background: #fff;
    border: 1px solid var(--qa-line);
    border-radius: var(--qa-radius-lg);
    padding: 36px 32px;
    box-shadow: var(--qa-shadow-sm);
}

.qa-contact-main-card {
    display: grid;
    grid-template-columns: 1fr 200px;
    gap: 28px;
}

.qa-contact-info-list {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.qa-contact-item {
    display: flex;
    align-items: flex-start;
    gap: 14px;
}

.qa-contact-icon {
    width: 42px;
    height: 42px;
    border-radius: 10px;
    background: var(--qa-primary-light);
    color: var(--qa-primary);
    display: grid;
    place-items: center;
    font-size: 16px;
    flex-shrink: 0;
}

.qa-contact-item h4 {
    margin: 0 0 3px;
    font-size: 15px;
    font-weight: 700;
    color: var(--qa-text-heading);
}

.qa-contact-item p {
    margin: 0;
    color: var(--qa-muted);
    font-size: 14px;
    line-height: 1.5;
}

.qa-contact-item p a:hover {
    color: var(--qa-primary);
}

.qa-contact-qr-card {
    background: var(--qa-bg);
    border: 1px solid var(--qa-line);
    border-radius: var(--qa-radius-md);
    padding: 20px 14px;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.qa-contact-qr-card h4 {
    margin: 0 0 12px;
    font-size: 15px;
    color: var(--qa-text-heading);
}

.qa-contact-qr-card img {
    width: 120px;
    height: 120px;
    border-radius: 8px;
    margin-bottom: 10px;
}

.qa-contact-qr-card p {
    margin: 0;
    font-size: 12px;
    color: var(--qa-muted);
}

.qa-contact-side-card h3 {
    margin: 0 0 20px;
    font-size: 20px;
    font-weight: 800;
    color: var(--qa-text-heading);
    display: flex;
    align-items: center;
    gap: 8px;
}

.qa-contact-side-card h3 i {
    color: var(--qa-primary);
}

.qa-contact-benefits {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.qa-contact-benefits li {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    font-size: 14px;
    color: var(--qa-text);
    line-height: 1.6;
}

.qa-contact-benefits li i {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--qa-primary);
    color: #fff;
    display: grid;
    place-items: center;
    font-size: 10px;
    flex-shrink: 0;
    margin-top: 2px;
}

/* ================= 文章内页与列表页 (List & Single) ================= */
.qa-list-page,
.qa-post-page,
.qa-single-page {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 320px;
    gap: 32px;
    padding: 36px 0 80px;
}

.qa-breadcrumb {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: var(--qa-muted);
    margin-bottom: 24px;
}

.qa-breadcrumb a:hover {
    color: var(--qa-primary);
}

.qa-breadcrumb-sep {
    font-size: 10px;
    color: var(--qa-light-muted);
}

.qa-breadcrumb-current {
    color: var(--qa-text-heading);
    font-weight: 600;
}

.qa-article-card {
    background: #fff;
    border: 1px solid var(--qa-line);
    border-radius: var(--qa-radius-lg);
    padding: 24px;
    margin-bottom: 20px;
    box-shadow: var(--qa-shadow-sm);
    transition: var(--qa-transition);
}

.qa-article-card:hover {
    border-color: var(--qa-primary-light);
    box-shadow: var(--qa-shadow-md);
    transform: translateY(-2px);
}

.qa-article-cover img {
    border-radius: var(--qa-radius-md);
    margin-bottom: 16px;
    aspect-ratio: 16/7;
    object-fit: cover;
    width: 100%;
}

.qa-article-body h2 {
    margin: 0 0 10px;
    font-size: 22px;
    font-weight: 700;
    line-height: 1.4;
}

.qa-article-body h2 a:hover {
    color: var(--qa-primary);
}

.qa-article-meta,
.qa-post-meta {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 16px;
    color: var(--qa-muted);
    font-size: 13px;
    margin-bottom: 12px;
}

.qa-meta-item {
    display: flex;
    align-items: center;
    gap: 6px;
}

.qa-badge-top {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    background: #ef4444;
    color: #fff;
    font-size: 12px;
    font-weight: 700;
    padding: 2px 8px;
    border-radius: 4px;
    margin-right: 6px;
}

.qa-article-summary {
    color: var(--qa-text);
    font-size: 14px;
    line-height: 1.75;
    margin: 0 0 16px;
}

.qa-article-foot {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 14px;
    border-top: 1px solid var(--qa-line-light);
}

.qa-readmore-btn {
    font-size: 13px;
    font-weight: 600;
    color: var(--qa-primary);
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.qa-readmore-btn:hover {
    color: var(--qa-primary-hover);
    transform: translateX(3px);
}

.qa-edit-link {
    font-size: 12px;
    color: var(--qa-muted);
}

.qa-edit-link:hover {
    color: var(--qa-primary);
}

.qa-empty-box {
    text-align: center;
    padding: 64px 20px;
    color: var(--qa-muted);
    background: var(--qa-bg);
    border-radius: var(--qa-radius-md);
}

.qa-empty-box i {
    font-size: 48px;
    margin-bottom: 12px;
    color: var(--qa-light-muted);
}

/* ================= 分页 (Pagination) ================= */
.qa-pagination {
    margin-top: 32px;
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.qa-pagination a,
.qa-pagination span {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 38px;
    height: 38px;
    padding: 0 12px;
    border: 1px solid var(--qa-line);
    border-radius: var(--qa-radius-sm);
    font-size: 14px;
    font-weight: 600;
    background: #fff;
    color: var(--qa-text);
    transition: var(--qa-transition);
}

.qa-pagination span,
.qa-pagination a:hover {
    border-color: var(--qa-primary);
    background: var(--qa-primary);
    color: #fff;
}

/* ================= 详情页 (Post & Page Detail) ================= */
.qa-post-card,
.qa-page-card {
    background: #fff;
    border: 1px solid var(--qa-line);
    border-radius: var(--qa-radius-lg);
    padding: 36px 32px;
    box-shadow: var(--qa-shadow-sm);
    margin-bottom: 24px;
}

.qa-post-header,
.qa-page-header {
    margin-bottom: 28px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--qa-line);
}

.qa-post-title,
.qa-page-title {
    margin: 0 0 14px;
    font-size: clamp(24px, 3vw, 32px);
    font-weight: 800;
    color: var(--qa-text-heading);
    line-height: 1.35;
}

.qa-post-content {
    font-size: 16px;
    line-height: 1.85;
    color: #24292f;
}

.qa-post-content p {
    margin: 0 0 18px;
}

.qa-post-content img {
    border-radius: var(--qa-radius-md);
    margin: 20px auto;
    box-shadow: var(--qa-shadow-md);
}

.qa-post-content h2,
.qa-post-content h3,
.qa-post-content h4 {
    color: var(--qa-text-heading);
    font-weight: 700;
    margin: 32px 0 14px;
    line-height: 1.4;
}

.qa-post-content h2 {
    font-size: 22px;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--qa-line);
}

.qa-post-content h3 {
    font-size: 19px;
}

.qa-post-content blockquote {
    margin: 20px 0;
    padding: 14px 20px;
    background: var(--qa-bg);
    border-left: 4px solid var(--qa-primary);
    border-radius: 0 var(--qa-radius-sm) var(--qa-radius-sm) 0;
    color: var(--qa-muted);
}

.qa-post-content table {
    width: 100%;
    border-collapse: collapse;
    margin: 24px 0;
    font-size: 14px;
}

.qa-post-content th,
.qa-post-content td {
    padding: 12px 16px;
    border: 1px solid var(--qa-line);
    text-align: left;
}

.qa-post-content th {
    background: var(--qa-bg);
    font-weight: 700;
}

.qa-post-tags {
    margin-top: 28px;
    padding-top: 20px;
    border-top: 1px solid var(--qa-line-light);
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.qa-tag-item {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    font-size: 13px;
    padding: 5px 12px;
    border-radius: 999px;
    background: var(--qa-bg-alt);
    color: var(--qa-text);
}

.qa-tag-item:hover {
    background: var(--qa-primary-light);
    color: var(--qa-primary);
}

.qa-post-cta-box {
    margin-top: 32px;
    background: var(--qa-bg);
    border: 1px solid var(--qa-line);
    border-radius: var(--qa-radius-md);
    padding: 24px 28px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
}

.qa-post-cta-info h4 {
    margin: 0 0 6px;
    font-size: 16px;
    font-weight: 700;
    color: var(--qa-text-heading);
    display: flex;
    align-items: center;
    gap: 8px;
}

.qa-post-cta-info h4 i {
    color: var(--qa-primary);
}

.qa-post-cta-info p {
    margin: 0;
    color: var(--qa-muted);
    font-size: 13px;
}

.qa-neighbor-wrap {
    margin-top: 28px;
}

.qa-neighbor-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.qa-neighbor-item {
    background: var(--qa-bg);
    border: 1px solid var(--qa-line);
    border-radius: var(--qa-radius-md);
    padding: 16px 20px;
    display: flex;
    flex-direction: column;
    gap: 4px;
    transition: var(--qa-transition);
}

.qa-neighbor-item:hover {
    border-color: var(--qa-primary);
    background: #fff;
    box-shadow: var(--qa-shadow-sm);
}

.qa-neighbor-sub {
    font-size: 12px;
    color: var(--qa-muted);
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 6px;
}

.qa-neighbor-next {
    text-align: right;
}

.qa-neighbor-next .qa-neighbor-sub {
    justify-content: flex-end;
}

.qa-neighbor-name {
    font-size: 14px;
    font-weight: 600;
    color: var(--qa-text-heading);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.qa-neighbor-none {
    color: var(--qa-light-muted);
    justify-content: center;
}

/* ================= 评论留言模块 (Comments) ================= */
.qa-comments-section {
    background: #fff;
    border: 1px solid var(--qa-line);
    border-radius: var(--qa-radius-lg);
    padding: 32px;
    box-shadow: var(--qa-shadow-sm);
    margin-bottom: 24px;
}

.qa-comment-title {
    margin: 0 0 24px;
    font-size: 18px;
    font-weight: 800;
    color: var(--qa-text-heading);
    display: flex;
    align-items: center;
    gap: 8px;
}

.qa-comment-title i {
    color: var(--qa-primary);
}

.qa-comment-item {
    display: flex;
    gap: 14px;
    margin-bottom: 20px;
}

.qa-comment-avatar {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    flex-shrink: 0;
}

.qa-comment-main {
    flex: 1;
    background: var(--qa-bg);
    border: 1px solid var(--qa-line);
    border-radius: var(--qa-radius-md);
    padding: 16px 18px;
}

.qa-comment-meta {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 8px;
}

.qa-comment-meta b {
    font-size: 14px;
    color: var(--qa-text-heading);
}

.qa-comment-meta time {
    font-size: 12px;
    color: var(--qa-muted);
}

.qa-comment-content {
    font-size: 14px;
    color: var(--qa-text);
    line-height: 1.6;
    margin-bottom: 8px;
}

.qa-comment-reply {
    font-size: 12px;
    font-weight: 600;
    color: var(--qa-primary);
    display: inline-flex;
    align-items: center;
    gap: 4px;
    cursor: pointer;
}

.qa-comment-child {
    margin-top: 14px;
    padding-left: 14px;
    border-left: 2px solid var(--qa-line);
}

.qa-no-comments {
    text-align: center;
    color: var(--qa-muted);
    padding: 24px 0;
}

.qa-comment-form-wrap {
    margin-top: 36px;
    padding-top: 28px;
    border-top: 1px solid var(--qa-line);
}

.qa-form-title {
    margin: 0 0 16px;
    font-size: 16px;
    font-weight: 700;
    color: var(--qa-text-heading);
    display: flex;
    align-items: center;
    gap: 8px;
}

.qa-form-title i {
    color: var(--qa-primary);
}

.qa-comment-form textarea,
.qa-comment-user input {
    width: 100%;
    border: 1px solid var(--qa-line);
    border-radius: var(--qa-radius-sm);
    padding: 12px 14px;
    font-size: 14px;
    outline: none;
    background: #fff;
    transition: var(--qa-transition);
}

.qa-comment-form textarea:focus,
.qa-comment-user input:focus {
    border-color: var(--qa-primary);
    box-shadow: 0 0 0 3px var(--qa-primary-light);
}

.qa-comment-user {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    margin-top: 12px;
}

.qa-comment-captcha {
    margin-top: 12px;
}

.qa-comment-submit {
    margin-top: 16px;
}

/* ================= 侧边栏 (Sidebar) ================= */
.qa-sidebar {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.qa-side-card {
    background: #fff;
    border: 1px solid var(--qa-line);
    border-radius: var(--qa-radius-lg);
    padding: 24px 20px;
    box-shadow: var(--qa-shadow-sm);
}

.qa-side-title,
.qa-side-card h3 {
    margin: 0 0 16px;
    font-size: 16px;
    font-weight: 700;
    color: var(--qa-text-heading);
    display: flex;
    align-items: center;
    gap: 8px;
}

.qa-side-title i,
.qa-side-card h3 i {
    color: var(--qa-primary);
}

.qa-search-input-wrap {
    display: flex;
    align-items: center;
    background: var(--qa-bg);
    border: 1px solid var(--qa-line);
    border-radius: var(--qa-radius-sm);
    overflow: hidden;
    transition: var(--qa-transition);
}

.qa-search-input-wrap:focus-within {
    border-color: var(--qa-primary);
    box-shadow: 0 0 0 3px var(--qa-primary-light);
}

.qa-search-input-wrap input {
    flex: 1;
    border: 0;
    background: transparent;
    padding: 10px 14px;
    font-size: 14px;
    outline: none;
}

.qa-search-input-wrap button {
    border: 0;
    background: var(--qa-primary);
    color: #fff;
    padding: 0 16px;
    height: 42px;
    cursor: pointer;
    transition: var(--qa-transition);
}

.qa-search-input-wrap button:hover {
    background: var(--qa-primary-hover);
}

.qa-side-cat-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.qa-side-cat-list a {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 8px 12px;
    border-radius: var(--qa-radius-sm);
    font-size: 14px;
    color: var(--qa-text);
}

.qa-side-cat-list a:hover {
    background: var(--qa-primary-light);
    color: var(--qa-primary);
}

.qa-badge-count {
    background: var(--qa-bg-alt);
    color: var(--qa-muted);
    font-size: 12px;
    padding: 2px 8px;
    border-radius: 999px;
}

.qa-side-hot-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.qa-side-hot-list li {
    display: flex;
    align-items: flex-start;
    gap: 10px;
}

.qa-hot-num {
    width: 20px;
    height: 20px;
    border-radius: 4px;
    background: var(--qa-bg-alt);
    color: var(--qa-muted);
    font-size: 11px;
    font-weight: 700;
    display: grid;
    place-items: center;
    flex-shrink: 0;
    margin-top: 3px;
}

.qa-hot-num.qa-num-top {
    background: var(--qa-primary);
    color: #fff;
}

.qa-side-hot-list a {
    font-size: 13px;
    color: var(--qa-text);
    line-height: 1.5;
    flex: 1;
}

.qa-side-hot-list a:hover {
    color: var(--qa-primary);
}

.qa-side-contact-box {
    background: linear-gradient(145deg, #0b1320 0%, #172437 100%);
    color: #fff;
    border-color: #1e2d42;
}

.qa-side-contact-box .qa-side-title {
    color: #fff;
}

.qa-side-contact-tip {
    font-size: 13px;
    color: #cbd5e1;
    margin: 0 0 16px;
    line-height: 1.6;
}

.qa-side-hotline {
    background: rgba(255, 255, 255, 0.08);
    border-radius: var(--qa-radius-sm);
    padding: 12px 14px;
    margin-bottom: 16px;
}

.qa-hotline-label {
    display: block;
    font-size: 11px;
    color: #94a3b8;
}

.qa-hotline-num {
    font-size: 18px;
    font-weight: 800;
    color: #38bdf8;
}

.qa-side-qr-wrap {
    text-align: center;
    background: rgba(255, 255, 255, 0.04);
    padding: 12px;
    border-radius: var(--qa-radius-sm);
}

.qa-side-qr-wrap img {
    width: 100px;
    height: 100px;
    border-radius: 6px;
    margin: 0 auto 6px;
}

.qa-side-qr-wrap span {
    font-size: 12px;
    color: #94a3b8;
}

/* ================= 页脚 (Footer) ================= */
.qa-footer {
    background: #09101d;
    color: #cbd5e1;
    padding-top: 64px;
    margin-top: auto;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.qa-footer-grid {
    display: grid;
    grid-template-columns: 1.4fr 0.9fr 1.2fr 0.9fr;
    gap: 36px;
}

.qa-footer-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 16px;
}

.qa-footer-brand {
    font-size: 20px;
    font-weight: 800;
    color: #fff;
}

.qa-footer-desc {
    margin: 0 0 20px;
    color: #94a3b8;
    font-size: 14px;
    line-height: 1.75;
}

.qa-footer-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.qa-footer-tags span {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 12px;
    color: #cbd5e1;
    background: rgba(255, 255, 255, 0.06);
    padding: 4px 10px;
    border-radius: 6px;
}

.qa-footer-tags span i {
    color: var(--qa-primary);
}

.qa-footer-title {
    margin: 0 0 20px;
    color: #fff;
    font-size: 16px;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 8px;
}

.qa-footer-title i {
    color: var(--qa-primary);
}

.qa-footer-links {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.qa-footer-links a {
    color: #94a3b8;
    font-size: 14px;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.qa-footer-links a:hover {
    color: #fff;
    transform: translateX(4px);
}

.qa-footer-contact-info {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.qa-footer-contact-info p {
    margin: 0;
    color: #94a3b8;
    font-size: 14px;
    display: flex;
    align-items: flex-start;
    gap: 10px;
}

.qa-footer-contact-info i {
    color: var(--qa-primary);
    margin-top: 4px;
}

.qa-footer-contact-info b {
    color: #38bdf8;
    font-size: 16px;
}

.qa-footer-qr-box {
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--qa-radius-md);
    padding: 16px;
    text-align: center;
}

.qa-footer-qr-box img {
    width: 110px;
    height: 110px;
    border-radius: 8px;
    margin: 0 auto 10px;
}

.qa-footer-qr-placeholder {
    width: 110px;
    height: 110px;
    border-radius: 8px;
    margin: 0 auto 10px;
    background: rgba(255, 255, 255, 0.06);
    display: grid;
    place-items: center;
    font-size: 32px;
    color: #64748b;
}

.qa-footer-qr-box p {
    margin: 0;
    font-size: 12px;
    color: #94a3b8;
}

.qa-footer-bottom {
    margin-top: 56px;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    padding: 24px 0 28px;
    font-size: 13px;
    color: #64748b;
}

.qa-footer-bottom-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 16px;
}

.qa-footer-copy {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
}

.qa-icp-link {
    color: #94a3b8;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.qa-icp-link:hover {
    color: #fff;
}

/* ================= 侧边悬浮咨询组件 (Floating Toolbar) ================= */
.qa-float-toolbar {
    position: fixed;
    right: 20px;
    bottom: 40px;
    z-index: 90;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.qa-float-item {
    position: relative;
}

.qa-float-item > a {
    width: 46px;
    height: 46px;
    border-radius: 12px;
    background: #fff;
    color: var(--qa-text-heading);
    box-shadow: var(--qa-shadow-lg);
    display: grid;
    place-items: center;
    font-size: 18px;
    border: 1px solid var(--qa-line);
    transition: var(--qa-transition);
}

.qa-float-item:hover > a {
    background: var(--qa-primary);
    color: #fff;
    border-color: var(--qa-primary);
    transform: scale(1.08);
}

.qa-float-popover {
    position: absolute;
    right: calc(100% + 14px);
    top: 50%;
    transform: translateY(-50%) translateX(10px);
    background: #fff;
    border: 1px solid var(--qa-line);
    border-radius: var(--qa-radius-md);
    padding: 16px;
    box-shadow: var(--qa-shadow-lg);
    min-width: 200px;
    opacity: 0;
    pointer-events: none;
    transition: var(--qa-transition);
    color: var(--qa-text);
}

.qa-float-item:hover .qa-float-popover {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(-50%) translateX(0);
}

.qa-pop-title {
    margin: 0 0 6px;
    font-size: 14px;
    font-weight: 700;
    color: var(--qa-text-heading);
    display: flex;
    align-items: center;
    gap: 6px;
}

.qa-pop-title i {
    color: var(--qa-primary);
}

.qa-pop-phone {
    margin: 0 0 4px;
    font-size: 16px;
    font-weight: 800;
    color: var(--qa-primary);
}

.qa-pop-tip {
    margin: 0;
    font-size: 12px;
    color: var(--qa-muted);
}

.qa-float-qr-pop {
    text-align: center;
    min-width: 170px;
}

.qa-pop-qr-img {
    width: 120px;
    height: 120px;
    border-radius: 6px;
    margin: 8px auto;
}

.qa-pop-wx {
    margin: 0;
    font-size: 12px;
    color: var(--qa-text);
}

.qa-float-backtop {
    opacity: 0;
    pointer-events: none;
    transition: var(--qa-transition);
}

.qa-float-backtop.show {
    opacity: 1;
    pointer-events: auto;
}

/* ================= 404 页面 ================= */
.qa-404 {
    min-height: 60vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    gap: 16px;
    padding: 80px 0;
}

.qa-404 h1 {
    font-size: 72px;
    font-weight: 900;
    color: var(--qa-primary);
    margin: 0;
    line-height: 1;
}

.qa-404 p {
    color: var(--qa-muted);
    font-size: 16px;
    margin: 0 0 16px;
}

/* ================= 响应式适配 (Responsive Queries) ================= */
@media (max-width: 1100px) {
    .qa-history-timeline {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }

    .qa-team-grid {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }

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

@media (max-width: 900px) {
    .qa-topbar {
        display: none;
    }

    .qa-header-cta-btn {
        display: none;
    }

    .qa-menu-btn {
        display: grid;
        place-items: center;
    }

    .qa-nav {
        position: fixed;
        top: 0;
        right: -320px;
        width: 300px;
        height: 100vh;
        background: #fff;
        z-index: 1000;
        box-shadow: -10px 0 30px rgba(0, 0, 0, 0.15);
        display: flex;
        flex-direction: column;
        padding: 20px;
        transition: right 0.3s cubic-bezier(0.16, 1, 0.3, 1);
        overflow-y: auto;
    }

    .qa-nav.open {
        right: 0;
    }

    .qa-nav-backdrop {
        position: fixed;
        inset: 0;
        background: rgba(0, 0, 0, 0.5);
        backdrop-filter: blur(4px);
        z-index: 999;
        opacity: 0;
        pointer-events: none;
        transition: opacity 0.3s ease;
    }

    .qa-nav-backdrop.show {
        opacity: 1;
        pointer-events: auto;
    }

    .qa-mobile-nav-header {
        display: flex;
        align-items: center;
        justify-content: space-between;
        padding-bottom: 16px;
        border-bottom: 1px solid var(--qa-line);
        margin-bottom: 16px;
    }

    .qa-mobile-nav-title {
        font-size: 17px;
        font-weight: 700;
        color: var(--qa-text-heading);
    }

    .qa-mobile-close-btn {
        border: 0;
        background: var(--qa-bg-alt);
        width: 36px;
        height: 36px;
        border-radius: 50%;
        display: grid;
        place-items: center;
        font-size: 16px;
        cursor: pointer;
    }

    .qa-nav-list {
        flex-direction: column;
        align-items: stretch;
        gap: 0;
    }

    .qa-nav-list > li > a {
        padding: 12px 6px;
        border-bottom: 1px solid var(--qa-line-light);
    }

    .qa-submenu {
        position: static;
        display: block;
        box-shadow: none;
        border: 0;
        background: var(--qa-bg);
        padding: 6px;
        margin: 6px 0 10px;
    }

    .qa-mobile-cta {
        display: block;
        margin-top: auto;
        padding-top: 20px;
    }

    .qa-hero {
        padding: 160px 0 170px;
        min-height: 520px;
    }

    .qa-hero-inner {
        padding-top: 10px;
    }

    .qa-stats-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .qa-about-wrapper {
        grid-template-columns: 1fr;
        gap: 36px;
    }

    .qa-service-grid,
    .qa-eco-grid,
    .qa-case-grid,
    .qa-news-grid,
    .qa-partner-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .qa-cta-box {
        flex-direction: column;
        align-items: flex-start;
        padding: 36px 28px;
    }

    .qa-cta-actions {
        width: 100%;
        flex-direction: column;
        align-items: stretch;
    }

    .qa-contact-grid {
        grid-template-columns: 1fr;
    }

    .qa-contact-main-card {
        grid-template-columns: 1fr;
    }

    .qa-list-page,
    .qa-post-page,
    .qa-single-page {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 640px) {
    .qa-stats-grid {
        grid-template-columns: 1fr;
    }

    .qa-service-grid,
    .qa-eco-grid,
    .qa-case-grid,
    .qa-news-grid,
    .qa-partner-grid,
    .qa-history-timeline,
    .qa-team-grid {
        grid-template-columns: 1fr;
    }

    .qa-about-checklist {
        grid-template-columns: 1fr;
    }

    .qa-about-footer {
        flex-direction: column;
        align-items: stretch;
    }

    .qa-neighbor-grid {
        grid-template-columns: 1fr;
    }

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

    .qa-float-toolbar {
        right: 12px;
        bottom: 20px;
    }
}