:root {
    --primary: #6D28D9;
    --primary-dark: #5B21B6;
    --primary-light: #8B5CF6;
    --accent: #14B8A6;
    --accent-dark: #0D9488;
    --surface: #FAF5FF;
    --surface-alt: #F0FDFA;
    --text: #1E1B4B;
    --text-muted: #64748B;
    --border: rgba(109, 40, 217, 0.12);
    --card-shadow: 0 4px 24px rgba(91, 33, 182, 0.08);
    --radius: 12px;
    --radius-lg: 20px;
    --transition: 0.25s 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);
    line-height: 1.65;
    background: #fff;
    overflow-x: hidden;
}

html {
    scroll-behavior: smooth;
}

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

/* 导航 */
.z5e292navbar {
    background: rgba(255, 255, 255, 0.96);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border);
    padding: 0.65rem 0;
    position: sticky;
    top: 0;
    z-index: 1030;
}

.z5e292navbar-brand img {
    height: 42px;
    width: auto;
}

.z5e292nav-link {
    color: var(--text) !important;
    font-weight: 500;
    font-size: 0.95rem;
    padding: 0.45rem 0.85rem !important;
    border-radius: 8px;
    transition: color var(--transition), background var(--transition);
}

.z5e292nav-link:hover,
.z5e292nav-link.active {
    color: var(--primary) !important;
    background: var(--surface);
}

/* Hero */
.z5e292hero-section {
    background: linear-gradient(145deg, var(--primary-dark) 0%, #4C1D95 45%, #312E81 100%);
    color: #fff;
    padding: clamp(3rem, 8vw, 5.5rem) 0;
    position: relative;
    overflow: hidden;
}

.z5e292hero-section::after {
    content: '';
    position: absolute;
    right: -10%;
    top: -20%;
    width: 50%;
    height: 140%;
    background: radial-gradient(ellipse, rgba(20, 184, 166, 0.25) 0%, transparent 70%);
    pointer-events: none;
}

.z5e292hero-content {
    position: relative;
    z-index: 1;
}

.z5e292hero-badge {
    display: inline-block;
    background: rgba(20, 184, 166, 0.2);
    border: 1px solid rgba(20, 184, 166, 0.4);
    color: #99F6E4;
    font-size: 0.8rem;
    font-weight: 600;
    padding: 0.35rem 0.85rem;
    border-radius: 999px;
    margin-bottom: 1rem;
    letter-spacing: 0.02em;
}

.z5e292hero-title {
    font-size: clamp(1.75rem, 4.5vw, 2.75rem);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1rem;
}

.z5e292hero-subtitle {
    font-size: clamp(0.95rem, 2vw, 1.1rem);
    opacity: 0.92;
    margin-bottom: 1.25rem;
    max-width: 36em;
}

.z5e292hero-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem 1rem;
    margin-bottom: 1.5rem;
    font-size: 0.85rem;
    opacity: 0.9;
}

.z5e292hero-tags span {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
}

.z5e292hero-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.z5e292btn {
    padding: 0.65rem 1.25rem;
    border-radius: 10px;
    font-weight: 600;
    font-size: 0.9rem;
    border: none;
    transition: transform var(--transition), box-shadow var(--transition);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    white-space: normal;
}

.z5e292btn:hover {
    transform: translateY(-2px);
}

.z5e292btn-accent {
    background: var(--accent);
    color: #fff;
}

.z5e292btn-accent:hover {
    background: var(--accent-dark);
    color: #fff;
    box-shadow: 0 8px 20px rgba(20, 184, 166, 0.35);
}

.z5e292btn-outline-light {
    background: transparent;
    border: 2px solid rgba(255, 255, 255, 0.7);
    color: #fff;
}

.z5e292btn-outline-light:hover {
    background: rgba(255, 255, 255, 0.12);
    color: #fff;
}

.z5e292btn-ghost {
    background: rgba(255, 255, 255, 0.15);
    color: #fff;
}

.z5e292btn-ghost:hover {
    background: rgba(255, 255, 255, 0.25);
    color: #fff;
}

.z5e292btn-primary {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: #fff;
}

.z5e292btn-primary:hover {
    color: #fff;
    box-shadow: 0 8px 20px rgba(109, 40, 217, 0.3);
}

.z5e292btn-outline {
    background: transparent;
    border: 2px solid var(--primary);
    color: var(--primary);
}

.z5e292btn-outline:hover {
    background: var(--surface);
    color: var(--primary-dark);
}

.z5e292btn-sm {
    padding: 0.45rem 1rem;
    font-size: 0.85rem;
}

.z5e292hero-visual {
    position: relative;
    z-index: 1;
    display: flex;
    justify-content: center;
    padding: 1rem;
}

.z5e292hero-image {
    max-width: min(280px, 85vw);
    border-radius: var(--radius-lg);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.25);
}

/* 通用区块 */
.z5e292section {
    padding: clamp(2.5rem, 6vw, 4rem) 0;
}

.z5e292section-head {
    margin-bottom: 2rem;
}

.z5e292section-head h2 {
    font-size: clamp(1.4rem, 3vw, 1.85rem);
    font-weight: 700;
    color: var(--text);
    margin-bottom: 0.5rem;
}

.z5e292section-head p {
    color: var(--text-muted);
    margin: 0;
    font-size: 1rem;
}

/* Bento 优势 */
.z5e292features-section {
    background: var(--surface);
}

.z5e292bento-card {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.5rem;
    height: 100%;
    box-shadow: var(--card-shadow);
    transition: border-color var(--transition), transform var(--transition);
}

.z5e292bento-card:hover {
    border-color: var(--primary-light);
    transform: translateY(-3px);
}

.z5e292bento-highlight {
    background: linear-gradient(160deg, #fff 0%, var(--surface-alt) 100%);
    border-color: rgba(20, 184, 166, 0.25);
}

.z5e292bento-icon {
    width: 48px;
    height: 48px;
    border-radius: 10px;
    background: linear-gradient(135deg, var(--primary-light), var(--primary));
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    margin-bottom: 1rem;
}

.z5e292bento-card h3 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text);
}

.z5e292bento-card p {
    font-size: 0.92rem;
    color: var(--text-muted);
    margin: 0;
}

.z5e292knowledge-box {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.25rem 1.5rem;
    height: 100%;
}

.z5e292knowledge-box h4 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--primary-dark);
    margin-bottom: 0.65rem;
}

.z5e292knowledge-box p {
    font-size: 0.9rem;
    color: var(--text-muted);
    margin: 0;
}

/* 统计 */
.z5e292stats-section {
    background: linear-gradient(90deg, var(--primary-dark), var(--primary));
    color: #fff;
    padding: clamp(2rem, 5vw, 3rem) 0;
}

.z5e292stat-item {
    text-align: center;
    padding: 0.75rem 0.5rem;
}

.z5e292stat-number {
    font-size: clamp(1.5rem, 4vw, 2.25rem);
    font-weight: 700;
    line-height: 1.2;
}

.z5e292stat-label {
    font-size: 0.88rem;
    opacity: 0.88;
    margin-top: 0.25rem;
}

/* 下载 */
.z5e292download-section {
    background: #fff;
    padding: clamp(2.5rem, 6vw, 4rem) 0;
}

.z5e292download-subtitle {
    color: var(--text-muted);
}

.z5e292download-card {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.5rem;
    box-shadow: var(--card-shadow);
    display: flex;
    flex-direction: column;
    min-height: 0;
    overflow: hidden;
}

.z5e292download-featured {
    border-color: var(--accent);
    box-shadow: 0 8px 32px rgba(20, 184, 166, 0.15);
}

.z5e292download-card h3 {
    font-size: 1.05rem;
    font-weight: 600;
    margin: 0.75rem 0 0.5rem;
    color: var(--text);
    word-break: break-word;
}

.z5e292card-desc {
    font-size: 0.88rem;
    color: var(--text-muted);
    margin-bottom: 0.75rem;
    flex-grow: 0;
}

.z5e292download-list {
    list-style: none;
    padding: 0;
    margin: 0 0 1rem;
    font-size: 0.85rem;
    color: var(--text-muted);
}

.z5e292download-list li {
    padding: 0.25rem 0 0.25rem 1.1rem;
    position: relative;
}

.z5e292download-list li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--accent);
}

.z5e292download-action {
    margin-top: auto;
    padding-top: 0.5rem;
}

.z5e292platform-icon {
    width: 52px;
    height: 52px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    color: #fff;
    flex-shrink: 0;
}

.z5e292pc-icon {
    background: linear-gradient(135deg, #6366F1, #4F46E5);
}

.z5e292android-icon {
    background: linear-gradient(135deg, #34D399, #059669);
}

.z5e292ios-icon {
    background: linear-gradient(135deg, #A78BFA, var(--primary));
}

/* 安全 */
.z5e292security-section {
    background: var(--surface-alt);
    padding: clamp(2.5rem, 6vw, 4rem) 0;
}

.z5e292security-subtitle {
    color: var(--text-muted);
}

.z5e292security-card {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.25rem;
    height: 100%;
    text-align: center;
    box-shadow: var(--card-shadow);
}

.z5e292security-icon {
    width: 52px;
    height: 52px;
    margin: 0 auto 0.75rem;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-light), var(--primary));
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
}

.z5e292security-card h3 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: var(--text);
}

.z5e292security-features {
    background: var(--surface);
    border-radius: 8px;
    padding: 0.75rem;
    text-align: left;
}

.z5e292feature-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 0.35rem;
}

.z5e292feature-item:last-child {
    margin-bottom: 0;
}

.z5e292feature-item i {
    color: var(--accent);
    font-size: 0.75rem;
}

/* FAQ */
.z5e292faq-section {
    background: #fff;
}

.z5e292faq-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.15rem 1.25rem;
    height: 100%;
}

.z5e292faq-card h5 {
    font-size: 0.98rem;
    font-weight: 600;
    color: var(--primary-dark);
    margin-bottom: 0.5rem;
}

.z5e292faq-card p {
    font-size: 0.88rem;
    color: var(--text-muted);
    margin: 0;
}

/* 文章区 */
.z5e292article-section {
    background: var(--surface);
}

.z5e292article-card {
    border: 1px solid var(--border) !important;
    border-radius: var(--radius) !important;
    overflow: hidden;
    box-shadow: var(--card-shadow) !important;
}

.z5e292thumb-home {
    height: 110px;
    width: 100%;
    object-fit: cover;
}

.z5e292article-card .card-body {
    padding: 0.75rem;
}

.z5e292article-card h6,
.z5e292article-card .h6 {
    font-size: 0.88rem;
    line-height: 1.4;
    margin: 0;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* 页脚 */
.z5e292footer {
    background: var(--text);
    color: rgba(255, 255, 255, 0.75);
    padding: clamp(2rem, 5vw, 3rem) 0 1.5rem;
}

.z5e292footer-title {
    color: #fff;
    font-size: 0.95rem;
    font-weight: 600;
    margin-bottom: 0.85rem;
}

.z5e292footer-links {
    list-style: none;
    padding: 0;
    margin: 0;
}

.z5e292footer-links li {
    margin-bottom: 0.4rem;
}

.z5e292footer-link {
    color: rgba(255, 255, 255, 0.65);
    text-decoration: none;
    font-size: 0.88rem;
}

.z5e292footer-link:hover {
    color: var(--accent);
}

.z5e292friend-links {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem 1rem;
    list-style: none;
    padding: 0;
    margin: 0;
}

.z5e292friend-links a {
    color: rgba(255, 255, 255, 0.65);
    font-size: 0.85rem;
    text-decoration: none;
}

.z5e292friend-links a:hover {
    color: var(--accent);
}

.z5e292footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.12);
    padding-top: 1.25rem;
    margin-top: 1.5rem;
}

.z5e292footer-bottom a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
}

.z5e292footer-bottom a:hover {
    color: var(--accent);
}

/* 列表/内页 */
.z5e292pages .pagelist {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    list-style: none;
    padding: 0;
    margin: 0;
}

.z5e292article-content {
    word-break: break-word;
    overflow-wrap: break-word;
}

.z5e292article-content img {
    max-width: 100%;
    height: auto;
}

.listbox .card,
article.card {
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
}

/* 响应式 */
@media (max-width: 991px) {
    .z5e292navbar .navbar-collapse {
        margin-top: 0.5rem;
        padding: 0.75rem;
        border-radius: var(--radius);
        border: 1px solid var(--border);
        max-height: 70vh;
        overflow-y: auto;
    }
}

@media (max-width: 767px) {
    .z5e292hero-buttons {
        flex-direction: column;
    }

    .z5e292hero-buttons .z5e292btn {
        width: 100%;
    }

    .z5e292hero-visual {
        margin-top: 0.5rem;
    }

    .z5e292download-card {
        padding: 1.15rem;
    }

    .z5e292download-card h3 {
        font-size: 0.98rem;
    }

    .z5e292security-card {
        padding: 1rem;
    }

    .z5e292stat-item {
        padding: 0.5rem;
    }

    .z5e292thumb-home {
        height: 96px !important;
    }

    #article .z5e292article-card .card-body {
        padding: 0.65rem;
    }

    .z5e292navbar-brand img {
        height: 36px;
    }

    .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;
    }

    .z5e292thumb-list,
    .z5e292thumb-related {
        height: 72px !important;
    }

    .z5e292thumb-side {
        height: 50px !important;
    }

    .z5e292thumb-cover {
        max-width: 100% !important;
        width: 100%;
        height: 170px !important;
    }
}

@media (max-width: 575px) {
    .z5e292container.container {
        padding-left: 14px;
        padding-right: 14px;
    }

    .z5e292thumb-home {
        height: 88px !important;
    }

    .z5e292thumb-list,
    .z5e292thumb-related {
        height: 64px !important;
    }

    .z5e292thumb-cover {
        height: 150px !important;
    }

    .z5e292knowledge-box {
        padding: 1rem;
    }

    .z5e292bento-card {
        padding: 1.15rem;
    }
}

/* 兼容旧类名 */
.z5e292feature-card,
.z5e292certificate-card {
    border: 1px solid var(--border);
    border-radius: var(--radius);
}

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

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

.navbar-toggler {
    border: none;
    padding: 0.4rem;
}

.card {
    margin-bottom: 0;
}