:root {
    --primary-color: #0f766e;
    --primary-light: #14b8a6;
    --secondary-color: #134e4a;
    --accent-color: #f59e0b;
    --accent-soft: #fef3c7;
    --text-color: #1e293b;
    --text-muted: #64748b;
    --light-bg: #f8fafc;
    --surface: #ffffff;
    --border-color: #e2e8f0;
    --dark-bg: #0f172a;
    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 20px;
    --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.06);
    --shadow-md: 0 8px 24px rgba(15, 23, 42, 0.08);
    --transition-speed: 0.25s;
    --transition-easing: cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: 'PingFang SC', 'Microsoft YaHei', 'Segoe UI', sans-serif;
    color: var(--text-color);
    line-height: 1.65;
    background: var(--light-bg);
    overflow-x: hidden;
}

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

/* 导航 */
.zb0c9cnavbar {
    background: rgba(255, 255, 255, 0.96);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    padding: 0.75rem 0;
    position: sticky;
    top: 0;
    z-index: 1030;
}

.zb0c9cnavbar-brand img {
    height: 42px;
    width: auto;
}

.zb0c9cnav-link {
    color: var(--text-color) !important;
    font-weight: 500;
    padding: 0.45rem 0.85rem !important;
    border-radius: var(--radius-sm);
    transition: color var(--transition-speed), background var(--transition-speed);
}

.zb0c9cnav-link:hover {
    color: var(--primary-color) !important;
    background: rgba(15, 118, 110, 0.08);
}

.navbar-toggler {
    border: 1px solid var(--border-color);
    padding: 0.4rem 0.55rem;
}

.navbar-collapse {
    background: var(--surface);
    padding: 0.75rem;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    margin-top: 0.5rem;
}

@media (min-width: 992px) {
    .navbar-collapse {
        background: transparent;
        border: none;
        padding: 0;
        margin-top: 0;
        box-shadow: none;
    }
}

/* 首页 Hero */
.zb0c9chero-section {
    background: linear-gradient(160deg, #ecfdf5 0%, #f0fdfa 45%, #fffbeb 100%);
    color: var(--text-color);
    padding: 4.5rem 0 4rem;
    position: relative;
    overflow: hidden;
}

.zb0c9chero-section::after {
    content: '';
    position: absolute;
    width: 420px;
    height: 420px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(20, 184, 166, 0.15) 0%, transparent 70%);
    top: -120px;
    right: -80px;
    pointer-events: none;
}

.zb0c9chero-content {
    position: relative;
    z-index: 1;
}

.zb0c9chero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.35rem 0.85rem;
    background: var(--surface);
    border: 1px solid var(--border-color);
    border-radius: 999px;
    font-size: 0.85rem;
    color: var(--primary-color);
    font-weight: 600;
    margin-bottom: 1.25rem;
}

.zb0c9chero-title {
    font-size: clamp(1.85rem, 4vw, 2.75rem);
    font-weight: 800;
    margin-bottom: 1rem;
    line-height: 1.25;
    color: var(--secondary-color);
    letter-spacing: -0.02em;
}

.zb0c9chero-subtitle {
    font-size: 1.05rem;
    margin-bottom: 1.75rem;
    color: var(--text-muted);
    max-width: 540px;
}

.zb0c9chero-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.zb0c9chero-buttons .btn {
    padding: 0.7rem 1.35rem;
    border-radius: var(--radius-sm);
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    white-space: normal;
    min-height: 48px;
}

.zb0c9cbtn-primary {
    background: var(--primary-color);
    border: none;
    color: #fff;
}

.zb0c9cbtn-primary:hover {
    background: var(--secondary-color);
    color: #fff;
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.zb0c9cbtn-outline {
    background: var(--surface);
    border: 1px solid var(--border-color);
    color: var(--primary-color);
}

.zb0c9cbtn-outline:hover {
    border-color: var(--primary-color);
    background: #ecfdf5;
    color: var(--secondary-color);
}

.zb0c9chero-image-container {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
}

.zb0c9chero-image {
    width: 100%;
    max-width: 320px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-md);
    object-fit: contain;
    margin: 0 auto;
}

.zb0c9chero-image-shadow {
    display: none;
}

/* 区块通用 */
.zb0c9csection {
    padding: 4rem 0;
}

.zb0c9csection-alt {
    background: var(--surface);
}

.zb0c9csection-title {
    font-size: clamp(1.5rem, 3vw, 2rem);
    font-weight: 700;
    color: var(--secondary-color);
    margin-bottom: 0.5rem;
}

.zb0c9csection-lead {
    color: var(--text-muted);
    max-width: 640px;
    margin: 0 auto 2.5rem;
    font-size: 1rem;
}

/* 优势 Bento */
.zb0c9cbento-grid {
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    gap: 1rem;
}

.zb0c9cbento-item {
    background: var(--surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 1.5rem;
    height: 100%;
    transition: box-shadow var(--transition-speed), border-color var(--transition-speed);
    overflow: hidden;
}

.zb0c9cbento-item:hover {
    border-color: var(--primary-light);
    box-shadow: var(--shadow-md);
}

.zb0c9cbento-item.span-4 { grid-column: span 4; }
.zb0c9cbento-item.span-6 { grid-column: span 6; }
.zb0c9cbento-item.span-8 { grid-column: span 8; }

.zb0c9cbento-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    background: #ecfdf5;
    color: var(--primary-color);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    margin-bottom: 1rem;
}

.zb0c9cbento-item h3 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: var(--secondary-color);
}

.zb0c9cbento-item p {
    font-size: 0.92rem;
    color: var(--text-muted);
    margin: 0;
}

/* 介绍条 */
.zb0c9cintro-strip {
    background: var(--secondary-color);
    color: #fff;
    padding: 2.5rem 0;
}

.zb0c9cintro-strip p {
    margin: 0;
    font-size: 1rem;
    line-height: 1.75;
    opacity: 0.95;
}

/* 统计 */
.zb0c9cstats-section {
    background: var(--surface);
    padding: 3rem 0;
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
}

.zb0c9cstats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1rem;
}

.zb0c9cstat-item {
    text-align: center;
    padding: 1.25rem 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    background: var(--light-bg);
}

.zb0c9cstat-number {
    font-size: clamp(1.5rem, 3vw, 2.25rem);
    font-weight: 800;
    color: var(--primary-color);
    margin-bottom: 0.25rem;
    line-height: 1.2;
}

.zb0c9cstat-label {
    font-size: 0.9rem;
    color: var(--text-muted);
}

/* 下载 */
.zb0c9cdownload-section {
    padding: 4rem 0;
    background: linear-gradient(180deg, #f0fdfa 0%, var(--light-bg) 100%);
}

.zb0c9cdownload-card {
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    background: var(--surface);
    height: 100%;
    overflow: hidden;
    transition: box-shadow var(--transition-speed);
}

.zb0c9cdownload-card:hover {
    box-shadow: var(--shadow-md);
}

.zb0c9cdownload-card .card-body {
    padding: 1.5rem;
}

.zb0c9cplatform-icon {
    width: 52px;
    height: 52px;
    min-width: 52px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.35rem;
    color: #fff;
}

.zb0c9cios-icon {
    background: linear-gradient(135deg, #2563eb, #1d4ed8);
}

.zb0c9candroid-icon {
    background: linear-gradient(135deg, #059669, #047857);
}

.zb0c9cdownload-info {
    background: var(--light-bg);
    padding: 1rem 1.15rem;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-color);
}

.zb0c9cinfo-item {
    display: flex;
    align-items: flex-start;
    gap: 0.5rem;
    margin-bottom: 0.6rem;
    font-size: 0.9rem;
    color: var(--text-muted);
}

.zb0c9cinfo-item:last-child {
    margin-bottom: 0;
}

.zb0c9cinfo-item i {
    color: var(--primary-color);
    margin-top: 0.15rem;
    flex-shrink: 0;
}

.zb0c9cdownload-action .btn {
    width: 100%;
    padding: 0.65rem 1rem;
    border-radius: var(--radius-sm);
    font-weight: 600;
    white-space: normal;
}

/* 安全 */
.zb0c9csecurity-section {
    padding: 4rem 0;
    background: var(--surface);
}

.zb0c9csecurity-card {
    background: var(--light-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 1.5rem;
    height: 100%;
    overflow: hidden;
}

.zb0c9csecurity-icon {
    width: 52px;
    height: 52px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    margin-bottom: 1rem;
    background: var(--primary-color);
    color: #fff;
}

.zb0c9csecurity-card h3 {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--secondary-color);
    margin-bottom: 0.75rem;
}

.zb0c9csecurity-features {
    padding: 0;
}

.zb0c9cfeature-item {
    display: flex;
    align-items: flex-start;
    gap: 0.45rem;
    margin-bottom: 0.5rem;
    font-size: 0.88rem;
    color: var(--text-muted);
}

.zb0c9cfeature-item i {
    color: var(--primary-color);
    flex-shrink: 0;
    margin-top: 0.1rem;
}

.zb0c9ccertificate-card {
    background: var(--surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 1.25rem;
    text-align: center;
    height: 100%;
}

.zb0c9ccertificate-icon {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: #ecfdf5;
    color: var(--primary-color);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 0.75rem;
    font-size: 1.1rem;
}

.zb0c9ccertificate-card h4 {
    font-size: 0.95rem;
    font-weight: 700;
    margin-bottom: 0.35rem;
    color: var(--secondary-color);
}

.zb0c9ccertificate-card p {
    font-size: 0.82rem;
    color: var(--text-muted);
    margin: 0;
}

/* FAQ */
.zb0c9cfaq-section {
    padding: 4rem 0;
    background: var(--light-bg);
}

.zb0c9cfaq-card {
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    background: var(--surface);
    height: 100%;
    overflow: hidden;
}

.zb0c9cfaq-card .card-body {
    padding: 1.25rem 1.35rem;
}

.zb0c9cfaq-card .card-title {
    font-size: 1rem;
    font-weight: 700;
    color: var(--secondary-color);
    margin-bottom: 0.5rem;
}

.zb0c9cfaq-card .card-text {
    font-size: 0.9rem;
    color: var(--text-muted);
    margin: 0;
}

/* 知识区 */
.zb0c9cknowledge-section {
    padding: 4rem 0;
    background: #ecfdf5;
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
}

.zb0c9cknowledge-card {
    background: var(--surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 1.5rem;
    height: 100%;
}

.zb0c9cknowledge-card h3 {
    font-size: 1rem;
    font-weight: 700;
    color: var(--secondary-color);
    margin-bottom: 0.65rem;
}

.zb0c9cknowledge-card p {
    font-size: 0.9rem;
    color: var(--text-muted);
    margin: 0;
}

/* 文章 */
#article {
    padding: 4rem 0;
    background: var(--surface);
}

#article .card {
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    overflow: hidden;
}

.zb0c9cthumb-home {
    height: 120px;
    object-fit: cover;
    width: 100%;
}

.zb0c9cthumb-list,
.zb0c9cthumb-related {
    width: 100%;
    height: 84px;
    object-fit: cover;
}

.zb0c9cthumb-side {
    width: 100%;
    height: 54px;
    object-fit: cover;
}

.zb0c9cthumb-cover {
    max-width: 100%;
    width: 100%;
    max-height: 280px;
    object-fit: cover;
}

.min-w-0 {
    min-width: 0;
}

/* 页脚 */
.zb0c9cfooter {
    background: var(--dark-bg);
    padding: 3rem 0 1.5rem;
    color: #94a3b8;
}

.zb0c9cfooter-title {
    color: #f1f5f9;
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.zb0c9cfooter-links {
    list-style: none;
    padding: 0;
    margin: 0;
}

.zb0c9cfooter-links li {
    margin-bottom: 0.5rem;
}

.zb0c9cfooter-link {
    color: #94a3b8;
    text-decoration: none;
    font-size: 0.9rem;
    transition: color var(--transition-speed);
}

.zb0c9cfooter-link:hover {
    color: var(--primary-light);
}

.zb0c9cfooter-bottom {
    border-top: 1px solid rgba(148, 163, 184, 0.2);
    padding-top: 1.25rem;
    margin-top: 2rem;
    font-size: 0.85rem;
}

.zb0c9cfriend-links {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem 1rem;
    list-style: none;
    padding: 0;
    margin: 0;
}

.zb0c9cfriend-links a {
    color: #94a3b8;
    font-size: 0.85rem;
    text-decoration: none;
}

.zb0c9cfriend-links a:hover {
    color: var(--primary-light);
}

/* 列表/内页 */
.zb0c9cpage-header {
    background: linear-gradient(160deg, #ecfdf5, #f8fafc);
    padding: 2rem 0;
    border-bottom: 1px solid var(--border-color);
}

.zb0c9cinner-card {
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    overflow: hidden;
    background: var(--surface);
}

.zb0c9carticle-content {
    font-size: 1rem;
    line-height: 1.8;
    word-wrap: break-word;
    overflow-wrap: break-word;
}

.zb0c9carticle-content img {
    max-width: 100%;
    height: auto;
}

.zb0c9cmeta-tags .zb0c9ctagitem a {
    display: inline-block;
    padding: 0.25rem 0.65rem;
    background: #ecfdf5;
    color: var(--primary-color);
    border-radius: 999px;
    font-size: 0.85rem;
    text-decoration: none;
}

/* 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;
}

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

.btn-primary:hover {
    background-color: var(--secondary-color);
    border-color: var(--secondary-color);
}

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

.btn-outline-primary:hover {
    background: var(--primary-color);
    border-color: var(--primary-color);
}

/* 响应式 */
@media (max-width: 991px) {
    .zb0c9cbento-item.span-4,
    .zb0c9cbento-item.span-6,
    .zb0c9cbento-item.span-8 {
        grid-column: span 12;
    }

    .zb0c9cstats-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .zb0c9chero-section {
        padding: 3rem 0 2.5rem;
    }

    .zb0c9chero-image-container {
        margin-top: 1.5rem;
    }
}

@media (max-width: 767px) {
    .zb0c9csection,
    .zb0c9cdownload-section,
    .zb0c9csecurity-section,
    .zb0c9cfaq-section,
    .zb0c9cknowledge-section {
        padding: 2.75rem 0;
    }

    .zb0c9cnavbar {
        padding: 0.5rem 0;
    }

    .zb0c9cnavbar .navbar-collapse {
        max-height: 70vh;
        overflow-y: auto;
    }

    .zb0c9chero-buttons {
        flex-direction: column;
    }

    .zb0c9chero-buttons .btn {
        width: 100%;
    }

    .zb0c9cstats-grid {
        grid-template-columns: 1fr 1fr;
        gap: 0.65rem;
    }

    .zb0c9cstat-item {
        padding: 1rem 0.5rem;
    }

    .zb0c9cdownload-card .d-flex.align-items-center {
        flex-wrap: wrap;
    }

    .zb0c9cdownload-card .d-flex.align-items-center .ms-3 {
        flex: 1;
        min-width: 0;
    }

    .zb0c9cdownload-info {
        padding: 0.85rem;
    }

    #article .row-cols-lg-5 {
        --bs-columns: 2;
    }

    #article .zb0c9cthumb-home {
        height: 96px !important;
    }

    #article h3.h5 {
        font-size: 0.92rem;
        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;
    }

    .zb0c9cthumb-list,
    .zb0c9cthumb-related {
        height: 72px !important;
    }

    .zb0c9cthumb-side {
        height: 50px !important;
    }

    .zb0c9cthumb-cover {
        max-width: 100% !important;
        width: 100%;
        height: auto !important;
        min-height: 160px;
        object-fit: cover;
    }

    .zb0c9cfooter .row > [class*="col-"] {
        text-align: center;
    }

    .zb0c9cfriend-links {
        justify-content: center;
    }
}

@media (max-width: 575px) {
    .zb0c9cstats-grid {
        grid-template-columns: 1fr;
    }

    #article .zb0c9cthumb-home {
        height: 88px !important;
    }

    .zb0c9cthumb-list,
    .zb0c9cthumb-related {
        height: 64px !important;
    }

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