/* 快联官网 — 全新主题：深青 + 琥珀 */
:root {
    --primary-color: #0f766e;
    --primary-dark: #115e59;
    --primary-light: #14b8a6;
    --accent-color: #f59e0b;
    --accent-hover: #d97706;
    --text-color: #1e293b;
    --text-muted: #64748b;
    --light-bg: #f0fdfa;
    --surface: #ffffff;
    --border-color: #ccfbf1;
    --shadow-sm: 0 1px 3px rgba(15, 118, 110, 0.08);
    --shadow-md: 0 8px 24px rgba(15, 118, 110, 0.12);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --transition-speed: 0.25s;
    --transition-easing: cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    font-family: 'PingFang SC', 'Microsoft YaHei', system-ui, sans-serif;
    color: var(--text-color);
    line-height: 1.65;
    background: #fff;
    overflow-x: hidden;
}

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

html {
    scroll-behavior: smooth;
}

/* 导航 */
.z6ce97navbar {
    background: var(--surface);
    border-bottom: 1px solid var(--border-color);
    padding: 0.65rem 0;
    box-shadow: var(--shadow-sm);
}

.z6ce97navbar-brand img {
    height: 42px;
    width: auto;
}

.z6ce97nav-link {
    color: var(--text-color) !important;
    font-weight: 500;
    font-size: 0.95rem;
    padding: 0.45rem 0.85rem !important;
    border-radius: var(--radius-sm);
    transition: color var(--transition-speed), background var(--transition-speed);
}

.z6ce97nav-link:hover,
.z6ce97nav-link.active {
    color: var(--primary-color) !important;
    background: var(--light-bg);
}

/* 按钮 */
.btn-kl-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    border: none;
    color: #fff;
    font-weight: 600;
    border-radius: var(--radius-md);
    padding: 0.65rem 1.35rem;
    transition: transform var(--transition-speed), box-shadow var(--transition-speed);
}

.btn-kl-primary:hover {
    color: #fff;
    background: linear-gradient(135deg, var(--primary-dark), #0d4f4a);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-kl-outline {
    background: transparent;
    border: 2px solid rgba(255, 255, 255, 0.85);
    color: #fff;
    font-weight: 600;
    border-radius: var(--radius-md);
    padding: 0.6rem 1.3rem;
}

.btn-kl-outline:hover {
    background: rgba(255, 255, 255, 0.15);
    color: #fff;
    border-color: #fff;
}

.z6ce97section .btn-kl-outline {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.z6ce97section .btn-kl-outline:hover {
    background: var(--light-bg);
    color: var(--primary-dark);
}

/* 首屏 */
.z6ce97hero-section {
    background: linear-gradient(160deg, #0f766e 0%, #134e4a 55%, #1e3a3a 100%);
    color: #fff;
    padding: 4.5rem 0 4rem;
    position: relative;
    overflow: hidden;
}

.z6ce97hero-section::after {
    content: '';
    position: absolute;
    right: -10%;
    top: -20%;
    width: 50%;
    height: 140%;
    background: radial-gradient(ellipse, rgba(245, 158, 11, 0.15) 0%, transparent 70%);
    pointer-events: none;
}

.z6ce97hero-content {
    position: relative;
    z-index: 1;
}

.z6ce97hero-badge {
    display: inline-block;
    background: rgba(245, 158, 11, 0.25);
    color: #fde68a;
    font-size: 0.8rem;
    font-weight: 600;
    padding: 0.35rem 0.85rem;
    border-radius: 999px;
    margin-bottom: 1rem;
    border: 1px solid rgba(245, 158, 11, 0.4);
}

.z6ce97hero-title {
    font-size: clamp(1.75rem, 4vw, 2.75rem);
    font-weight: 700;
    line-height: 1.25;
    margin-bottom: 1rem;
}

.z6ce97hero-subtitle {
    font-size: 1.05rem;
    opacity: 0.92;
    margin-bottom: 1.5rem;
    max-width: 36em;
}

.z6ce97hero-note {
    font-size: 0.85rem;
    opacity: 0.75;
    margin-top: 1rem;
    margin-bottom: 0;
}

.z6ce97hero-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.z6ce97hero-visual {
    position: relative;
    z-index: 1;
    display: flex;
    justify-content: center;
    align-items: center;
}

.z6ce97hero-visual-inner {
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: var(--radius-lg);
    padding: 1.25rem;
    max-width: 320px;
    margin: 0 auto;
}

.z6ce97hero-image {
    width: 100%;
    border-radius: var(--radius-md);
    object-fit: contain;
}

.z6ce97hero-image-shadow {
    display: none;
}

/* 通用区块 */
.z6ce97section {
    padding: 4rem 0;
}

.z6ce97section-head {
    max-width: 640px;
    margin: 0 auto 2.5rem;
}

.z6ce97section-head h2 {
    font-size: clamp(1.5rem, 3vw, 2rem);
    font-weight: 700;
    color: var(--primary-dark);
    margin-bottom: 0.75rem;
}

.z6ce97section-head p {
    color: var(--text-muted);
    margin-bottom: 0;
    font-size: 1rem;
}

.z6ce97section-head--light h2,
.z6ce97section-head--light p {
    color: #fff;
}

/* 优势卡片 */
.z6ce97advantages-section {
    background: var(--light-bg);
}

.z6ce97adv-card {
    background: var(--surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 1.5rem;
    height: 100%;
    box-shadow: var(--shadow-sm);
    transition: box-shadow var(--transition-speed), border-color var(--transition-speed);
    overflow: hidden;
}

.z6ce97adv-card:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--primary-light);
}

.z6ce97adv-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-sm);
    background: linear-gradient(135deg, var(--primary-light), var(--primary-color));
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    margin-bottom: 1rem;
}

.z6ce97adv-card h3 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--primary-dark);
    margin-bottom: 0.5rem;
}

.z6ce97adv-card p {
    font-size: 0.95rem;
    color: var(--text-muted);
    margin-bottom: 0;
}

.z6ce97knowledge-panel {
    margin-top: 2rem;
    padding: 1.25rem 1.5rem;
    background: var(--surface);
    border-left: 4px solid var(--accent-color);
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
    border: 1px solid var(--border-color);
    border-left-width: 4px;
    border-left-color: var(--accent-color);
}

.z6ce97knowledge-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--primary-dark);
    margin-bottom: 0.5rem;
}

.z6ce97knowledge-panel p {
    font-size: 0.95rem;
    color: var(--text-muted);
    margin-bottom: 0;
}

/* 数据条 */
.z6ce97metrics-section {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: #fff;
    padding: 3.5rem 0;
}

.z6ce97metric-item {
    text-align: center;
    padding: 1rem 0.5rem;
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-md);
    background: rgba(255, 255, 255, 0.06);
    height: 100%;
}

.z6ce97metric-num {
    font-size: clamp(1.5rem, 3vw, 2.25rem);
    font-weight: 700;
    line-height: 1.2;
}

.z6ce97metric-label {
    font-size: 0.9rem;
    opacity: 0.9;
    margin-top: 0.25rem;
}

/* 下载区 */
.z6ce97download-section {
    padding: 4rem 0;
    background: #fff;
}

.z6ce97download-card {
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    background: var(--surface);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    transition: box-shadow var(--transition-speed);
}

.z6ce97download-card:hover {
    box-shadow: var(--shadow-md);
}

.z6ce97dl-head {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.25rem;
    flex-wrap: wrap;
}

.z6ce97dl-head h3 {
    font-size: 1.15rem;
    font-weight: 600;
    margin-bottom: 0.15rem;
    color: var(--primary-dark);
}

.z6ce97platform-icon {
    width: 52px;
    height: 52px;
    min-width: 52px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    color: #fff;
    flex-shrink: 0;
}

.z6ce97android-icon {
    background: linear-gradient(135deg, #3ddc84, #2a9d5c);
}

.z6ce97win-icon {
    background: linear-gradient(135deg, #0078d4, #005a9e);
}

.z6ce97dl-list {
    list-style: none;
    padding: 0;
    margin: 0 0 1.25rem;
}

.z6ce97dl-list li {
    display: flex;
    align-items: flex-start;
    gap: 0.5rem;
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-bottom: 0.5rem;
    padding: 0.35rem 0;
}

.z6ce97dl-list li i {
    color: var(--primary-color);
    margin-top: 0.2rem;
    flex-shrink: 0;
}

.z6ce97dl-footnote {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-top: 2rem;
    margin-bottom: 0;
    max-width: 720px;
    margin-left: auto;
    margin-right: auto;
}

/* 隐私区 */
.z6ce97privacy-section {
    padding: 4rem 0;
    background: var(--light-bg);
}

.z6ce97privacy-card {
    background: var(--surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 1.25rem;
    height: 100%;
    text-align: center;
    box-shadow: var(--shadow-sm);
    overflow: hidden;
}

.z6ce97privacy-card i {
    font-size: 1.5rem;
    color: var(--primary-color);
    margin-bottom: 0.75rem;
}

.z6ce97privacy-card h4 {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--primary-dark);
    margin-bottom: 0.35rem;
}

.z6ce97privacy-card p {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 0;
    line-height: 1.5;
}

/* 指南 / FAQ */
.z6ce97guide-section {
    padding: 4rem 0;
    background: #fff;
}

.z6ce97faq-card {
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 1.25rem 1.35rem;
    height: 100%;
    background: var(--surface);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
}

.z6ce97faq-card h5 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--primary-dark);
    margin-bottom: 0.5rem;
}

.z6ce97faq-card p {
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-bottom: 0;
}

/* 文章区 */
.z6ce97article-section {
    padding: 4rem 0;
    background: var(--light-bg);
}

.z6ce97article-card {
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    background: var(--surface);
}

.z6ce97article-card .card-body {
    padding: 0.85rem 1rem;
}

.z6ce97thumb-home {
    height: 120px;
    width: 100%;
    object-fit: cover;
}

.z6ce97article-link {
    color: var(--text-color);
}

.z6ce97article-link:hover {
    color: var(--primary-color);
}

/* 页脚 */
.z6ce97footer {
    background: #134e4a;
    color: rgba(255, 255, 255, 0.85);
    padding: 3rem 0 1.5rem;
}

.z6ce97footer-title {
    color: #fde68a;
    font-size: 0.95rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.z6ce97footer-links {
    list-style: none;
    padding: 0;
    margin: 0;
}

.z6ce97footer-links li {
    margin-bottom: 0.5rem;
}

.z6ce97footer-link {
    color: rgba(255, 255, 255, 0.75);
    text-decoration: none;
    font-size: 0.9rem;
    transition: color var(--transition-speed);
}

.z6ce97footer-link:hover {
    color: #fff;
}

.z6ce97footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.15);
    color: rgba(255, 255, 255, 0.65);
}

.z6ce97footer-bottom a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
}

.z6ce97footer-bottom a:hover {
    color: #fff;
}

.z6ce97friend-links {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem 1rem;
    list-style: none;
    padding: 0;
    margin: 0;
}

.z6ce97friend-links a {
    color: rgba(255, 255, 255, 0.75);
    font-size: 0.85rem;
    text-decoration: none;
}

.z6ce97friend-links a:hover {
    color: #fff;
}

/* 列表页 / 内页 */
.z6ce97page-main {
    padding: 2.5rem 0 3rem;
    background: var(--light-bg);
    min-height: 50vh;
}

.z6ce97page-card {
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    background: var(--surface);
}

.z6ce97page-card .card-body {
    padding: 1.25rem 1.5rem;
}

.z6ce97sidebar-card {
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    background: var(--surface);
    margin-bottom: 1rem;
}

.z6ce97sidebar-card .card-body {
    padding: 1rem 1.25rem;
}

.z6ce97article-content {
    word-wrap: break-word;
    overflow-wrap: break-word;
}

.z6ce97article-content img {
    max-width: 100%;
    height: auto;
}

/* 分页 */
.pagebar .pagelist {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.5rem;
    list-style: none;
    padding-left: 0;
    margin: 0;
}

.pagebar .pagelist li {
    display: inline-flex;
    margin: 0;
}

/* 兼容旧类名（弱化） */
.z6ce97feature-card,
.z6ce97security-card,
.z6ce97certificate-card,
.z6ce97stat-item {
    box-sizing: border-box;
}

.btn.z6ce97btn {
    white-space: normal;
}

/* ========== 响应式 ========== */
@media (max-width: 991px) {
    .z6ce97hero-section {
        padding: 3.5rem 0 3rem;
    }

    .z6ce97hero-visual {
        margin-top: 0.5rem;
    }

    .z6ce97section,
    .z6ce97download-section,
    .z6ce97privacy-section,
    .z6ce97guide-section,
    .z6ce97article-section {
        padding: 3rem 0;
    }
}

@media (max-width: 767px) {
    .z6ce97navbar {
        padding: 0.5rem 0;
    }

    .z6ce97navbar .navbar-collapse {
        margin-top: 0.5rem;
        max-height: 70vh;
        overflow-y: auto;
        border: 1px solid var(--border-color);
        border-radius: var(--radius-md);
        padding: 0.5rem;
    }

    .z6ce97navbar .navbar-nav .nav-link {
        padding: 0.5rem 0.75rem !important;
    }

    .z6ce97hero-section {
        padding: 2.75rem 0 2.5rem;
    }

    .z6ce97hero-buttons {
        flex-direction: column;
    }

    .z6ce97hero-buttons .btn {
        width: 100%;
        justify-content: center;
    }

    .z6ce97hero-visual-inner {
        max-width: 260px;
        padding: 1rem;
    }

    .z6ce97section-head {
        margin-bottom: 1.75rem;
    }

    .z6ce97knowledge-panel {
        padding: 1rem;
    }

    .z6ce97download-card {
        padding: 1.15rem;
    }

    .z6ce97dl-head {
        flex-direction: row;
        align-items: flex-start;
    }

    .z6ce97metric-item {
        padding: 0.75rem 0.35rem;
    }

    .z6ce97privacy-card {
        padding: 1rem 0.75rem;
    }

    .z6ce97privacy-card p {
        font-size: 0.8rem;
    }

    .z6ce97thumb-home {
        height: 96px !important;
    }

    #article .z6ce97article-card .card-body,
    .z6ce97article-card .card-body {
        padding: 0.75rem;
    }

    #article h3.h6,
    .z6ce97article-card h3 {
        font-size: 0.9rem;
        line-height: 1.4;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
    }

    .listbox .e2 li {
        padding-bottom: 0.75rem !important;
        margin-bottom: 0.75rem !important;
    }

    .listbox .e2 li h2.h5 {
        font-size: 1rem;
        line-height: 1.35;
    }

    .z6ce97thumb-list,
    .z6ce97thumb-related {
        height: 72px !important;
    }

    .z6ce97thumb-side {
        height: 50px !important;
    }

    .z6ce97thumb-cover {
        max-width: 100% !important;
        width: 100%;
        height: 170px !important;
    }

    .z6ce97footer {
        text-align: center;
    }

    .z6ce97footer-links {
        margin-bottom: 0.5rem;
    }
}

@media (max-width: 575px) {
    .z6ce97hero-title {
        font-size: 1.55rem;
    }

    .z6ce97hero-subtitle {
        font-size: 0.95rem;
    }

    .z6ce97adv-card {
        padding: 1.15rem;
    }

    .z6ce97thumb-home {
        height: 88px !important;
    }

    .z6ce97thumb-list,
    .z6ce97thumb-related {
        height: 64px !important;
    }

    .z6ce97thumb-cover {
        height: 150px !important;
    }

    .pagebar .pagelist {
        gap: 0.35rem;
    }
}