:root {
    --primary-color: #7C3AED;
    --primary-light: #A78BFA;
    --secondary-color: #5B21B6;
    --accent-color: #14B8A6;
    --accent-warm: #F59E0B;
    --text-color: #1E293B;
    --text-muted: #64748B;
    --light-bg: #F8FAFC;
    --surface: #FFFFFF;
    --dark-bg: #0F172A;
    --dark-surface: #1E293B;
    --gray-100: #F1F5F9;
    --gray-200: #E2E8F0;
    --gray-300: #CBD5E1;
    --gray-400: #94A3B8;
    --gray-500: #64748B;
    --gray-600: #475569;
    --gray-700: #334155;
    --gray-800: #1E293B;
    --gray-900: #0F172A;
    --gradient-primary: linear-gradient(135deg, #7C3AED 0%, #5B21B6 50%, #4C1D95 100%);
    --gradient-accent: linear-gradient(135deg, #14B8A6 0%, #0D9488 100%);
    --gradient-hero: linear-gradient(160deg, #0F172A 0%, #1E1B4B 40%, #312E81 100%);
    --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.06);
    --shadow-md: 0 4px 20px rgba(15, 23, 42, 0.08);
    --shadow-lg: 0 12px 40px rgba(15, 23, 42, 0.12);
    --shadow-glow: 0 0 60px rgba(124, 58, 237, 0.25);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 20px;
    --card-padding: 1.5rem;
    --card-border: 1px solid var(--gray-200);
    --section-padding: 72px;
    --transition-speed: 0.3s;
    --transition-easing: cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    font-family: 'PingFang SC', 'Microsoft YaHei', -apple-system, sans-serif;
    color: var(--text-color);
    line-height: 1.7;
    background: var(--light-bg);
    overflow-x: hidden;
}

.ze5dd3container.container {
    max-width: 1140px;
    padding-left: 1rem;
    padding-right: 1rem;
}

/* ========== 导航栏 ========== */
.ze5dd3navbar {
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    box-shadow: var(--shadow-sm);
    padding: 0.75rem 0;
    position: sticky;
    top: 0;
    z-index: 1000;
}

.ze5dd3navbar-brand img {
    height: 45px;
}

.ze5dd3nav-link {
    color: var(--text-color) !important;
    font-weight: 500;
    padding: 0.5rem 1rem !important;
    transition: color var(--transition-speed) var(--transition-easing);
    border-radius: var(--radius-sm);
}

.ze5dd3nav-link:hover {
    color: var(--primary-color) !important;
}

/* ========== 通用区块标题 ========== */
.ze5dd3section-header {
    max-width: 720px;
    margin: 0 auto 3rem;
}

.ze5dd3section-tag {
    display: inline-block;
    padding: 0.35rem 1rem;
    background: rgba(124, 58, 237, 0.1);
    color: var(--primary-color);
    font-size: 0.85rem;
    font-weight: 600;
    border-radius: 50px;
    letter-spacing: 0.03em;
    margin-bottom: 1rem;
}

.ze5dd3section-header h2 {
    font-size: 2.25rem;
    font-weight: 700;
    color: var(--dark-bg);
    margin-bottom: 1rem;
    line-height: 1.3;
}

.ze5dd3section-desc {
    color: var(--text-muted);
    font-size: 1.05rem;
    line-height: 1.8;
    margin-bottom: 0;
}

/* ========== 英雄区域 ========== */
.ze5dd3hero-section {
    background: var(--gradient-hero);
    color: white;
    padding: 80px 0 100px;
    position: relative;
    overflow: hidden;
}

.ze5dd3hero-bg {
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse 80% 60% at 70% 20%, rgba(124, 58, 237, 0.3) 0%, transparent 60%),
        radial-gradient(ellipse 60% 50% at 20% 80%, rgba(20, 184, 166, 0.15) 0%, transparent 50%);
    pointer-events: none;
}

.ze5dd3hero-content {
    position: relative;
    z-index: 1;
}

.ze5dd3hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 50px;
    font-size: 0.875rem;
    margin-bottom: 1.5rem;
    backdrop-filter: blur(8px);
}

.ze5dd3hero-title {
    font-size: 3.25rem;
    font-weight: 800;
    margin-bottom: 1.25rem;
    line-height: 1.15;
    letter-spacing: -0.02em;
}

.ze5dd3hero-subtitle {
    font-size: 1.15rem;
    margin-bottom: 1rem;
    opacity: 0.9;
    line-height: 1.7;
}

.ze5dd3hero-desc {
    font-size: 0.95rem;
    opacity: 0.75;
    margin-bottom: 2rem;
    line-height: 1.8;
}

.ze5dd3hero-desc strong {
    color: var(--accent-color);
    font-weight: 600;
}

.ze5dd3hero-image-container {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
}

.ze5dd3hero-glow {
    position: absolute;
    width: min(280px, 80%);
    height: min(280px, 80%);
    background: radial-gradient(circle, rgba(124, 58, 237, 0.4) 0%, transparent 70%);
    border-radius: 50%;
    filter: blur(40px);
    animation: pulse-glow 4s ease-in-out infinite;
    pointer-events: none;
}

@keyframes pulse-glow {
    0%, 100% { opacity: 0.6; transform: scale(1); }
    50% { opacity: 1; transform: scale(1.1); }
}

.ze5dd3hero-image {
    width: 100%;
    max-width: 320px;
    height: auto;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-glow);
    object-fit: contain;
    position: relative;
    z-index: 1;
}

.ze5dd3hero-image-shadow {
    display: none;
}

.ze5dd3hero-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin-bottom: 2.5rem;
}

.ze5dd3hero-buttons .btn {
    padding: 0.875rem 1.75rem;
    border-radius: var(--radius-md);
    font-weight: 600;
    transition: all var(--transition-speed) var(--transition-easing);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: none;
    white-space: normal;
    overflow: visible;
    text-overflow: clip;
    line-height: 1.4;
}

.ze5dd3btn-register {
    background: white !important;
    color: var(--primary-color) !important;
}

.ze5dd3btn-register:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(255, 255, 255, 0.25);
    background: white !important;
}

.ze5dd3btn-download,
.ze5dd3hero-buttons .btn-primary {
    background: var(--gradient-accent) !important;
    color: white !important;
}

.ze5dd3btn-download:hover,
.ze5dd3hero-buttons .btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(20, 184, 166, 0.35);
}

.ze5dd3hero-trust {
    display: flex;
    flex-wrap: wrap;
    gap: 1.5rem;
}

.ze5dd3trust-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    opacity: 0.85;
}

.ze5dd3trust-item i {
    color: var(--accent-color);
    font-size: 1.1rem;
}

/* ========== 平台介绍 ========== */
.ze5dd3about-section {
    padding: var(--section-padding) 0;
    background: var(--surface);
}

.ze5dd3about-card {
    background: var(--light-bg);
    border-radius: var(--radius-lg);
    padding: var(--card-padding);
    height: 100%;
    border: var(--card-border);
    transition: all var(--transition-speed) var(--transition-easing);
}

.ze5dd3about-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: rgba(124, 58, 237, 0.2);
}

.ze5dd3about-icon {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-md);
    background: var(--gradient-primary);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin-bottom: 1.25rem;
}

.ze5dd3about-card h3 {
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
    color: var(--dark-bg);
}

.ze5dd3about-card p {
    color: var(--text-muted);
    font-size: 0.95rem;
    margin-bottom: 0;
    line-height: 1.75;
}

/* ========== 特点区域 ========== */
.ze5dd3features-section {
    padding: var(--section-padding) 0;
    background: var(--light-bg);
}

.ze5dd3feature-card {
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-speed) var(--transition-easing);
    border: var(--card-border);
    height: 100%;
    background: var(--surface);
    overflow: hidden;
}

.ze5dd3feature-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: rgba(124, 58, 237, 0.15);
}

.ze5dd3feature-card-lg {
    padding: 0;
}

.ze5dd3feature-card-inner {
    display: flex;
    gap: 1.25rem;
    padding: var(--card-padding);
    align-items: flex-start;
}

.ze5dd3feature-card-sm {
    padding: var(--card-padding);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    min-height: 200px;
}

.ze5dd3feature-icon {
    flex-shrink: 0;
    width: 64px;
    height: 64px;
    font-size: 1.5rem;
    color: white;
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
}

.ze5dd3feature-icon-sm {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
    background: rgba(124, 58, 237, 0.1);
    width: 64px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    margin: 0 auto 1.25rem;
}

.ze5dd3feature-body h3 {
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
    color: var(--dark-bg);
}

.ze5dd3feature-body p {
    color: var(--text-muted);
    font-size: 0.95rem;
    margin-bottom: 1rem;
    line-height: 1.75;
}

.ze5dd3feature-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.ze5dd3feature-list li {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    color: var(--gray-600);
    margin-bottom: 0.4rem;
}

.ze5dd3feature-list li i {
    color: var(--accent-color);
    font-weight: bold;
}

.ze5dd3feature-card h3 {
    font-size: 1.05rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
    color: var(--dark-bg);
}

.ze5dd3feature-card p {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-bottom: 0;
    line-height: 1.7;
}

/* ========== 按钮 ========== */
.btn {
    padding: 12px 28px;
    border-radius: var(--radius-md);
    font-weight: 600;
    transition: all var(--transition-speed) var(--transition-easing);
}

.btn-primary {
    background: var(--gradient-primary) !important;
    border: none !important;
    color: white !important;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(124, 58, 237, 0.3);
}

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

.btn-outline-primary:hover {
    background: var(--primary-color) !important;
    color: white !important;
}

/* ========== 下载区域 ========== */
.ze5dd3download-section {
    padding: var(--section-padding) 0;
    background: var(--surface);
}

.ze5dd3download-header {
    max-width: 720px;
    margin-left: auto;
    margin-right: auto;
}

.ze5dd3download-header h2 {
    color: var(--dark-bg);
    font-weight: 700;
    font-size: 2.25rem;
    line-height: 1.3;
    margin-bottom: 1rem;
}

.ze5dd3security-header {
    max-width: 720px;
    margin-left: auto;
    margin-right: auto;
}

.ze5dd3security-header h2 {
    font-size: 2.25rem;
    line-height: 1.3;
    margin-bottom: 1rem;
}

.ze5dd3download-subtitle {
    color: var(--text-muted);
    font-size: 1.05rem;
    line-height: 1.8;
}

.ze5dd3download-card {
    border: var(--card-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-speed) var(--transition-easing);
    background: var(--light-bg);
    position: relative;
    height: 100%;
    display: flex;
    flex-direction: column;
}

.ze5dd3download-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(124, 58, 237, 0.2);
}

.ze5dd3download-card-body {
    display: flex;
    flex-direction: column;
    flex: 1;
    padding: var(--card-padding);
    min-height: 0;
}

.ze5dd3ios-card .ze5dd3download-card-body {
    padding-top: 2.5rem;
}

.ze5dd3download-card-head {
    display: flex;
    align-items: center;
    gap: 0.875rem;
    margin-bottom: 1.25rem;
    padding-right: 3rem;
    min-width: 0;
}

.ze5dd3download-card-head .ms-3 {
    margin-left: 0 !important;
    min-width: 0;
    flex: 1;
}

.ze5dd3download-card-head h3 {
    font-size: 1.05rem;
    font-weight: 700;
    margin-bottom: 0.25rem;
    word-break: break-word;
}

.ze5dd3download-card-head p {
    font-size: 0.875rem;
    margin-bottom: 0;
}

.ze5dd3platform-badge {
    position: absolute;
    top: 0.875rem;
    right: 0.875rem;
    background: var(--gradient-accent);
    color: white;
    font-size: 0.7rem;
    font-weight: 600;
    padding: 0.2rem 0.65rem;
    border-radius: 50px;
    line-height: 1.4;
    z-index: 1;
}

.ze5dd3platform-icon {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: white;
}

.ze5dd3ios-icon {
    background: linear-gradient(135deg, #6366F1 0%, #4F46E5 100%);
}

.ze5dd3android-icon {
    background: linear-gradient(135deg, #22C55E 0%, #16A34A 100%);
}

.ze5dd3windows-icon {
    background: linear-gradient(135deg, #3B82F6 0%, #2563EB 100%);
}

.ze5dd3download-info {
    background: var(--surface);
    padding: 1rem 1.125rem;
    border-radius: var(--radius-md);
    border: var(--card-border);
    margin-bottom: 1.25rem;
    flex: 1;
}

.ze5dd3info-item {
    display: flex;
    align-items: flex-start;
    margin-bottom: 0.65rem;
    gap: 0.5rem;
}

.ze5dd3info-item:last-child {
    margin-bottom: 0;
}

.ze5dd3info-item i {
    color: var(--accent-color);
    margin-top: 0.15rem;
    flex-shrink: 0;
}

.ze5dd3info-item span {
    color: var(--gray-600);
    font-size: 0.9rem;
    line-height: 1.5;
}

.ze5dd3download-action {
    margin-top: auto;
}

.ze5dd3download-action .btn {
    padding: 0.7rem 1.25rem;
    border-radius: var(--radius-md);
    font-weight: 600;
    width: 100%;
    white-space: normal;
    overflow: visible;
    text-overflow: clip;
    line-height: 1.4;
}

/* 注册引导 */
.ze5dd3register-guide {
    background: var(--gradient-hero);
    border-radius: var(--radius-xl);
    padding: 2rem;
    color: white;
    overflow: hidden;
}

.ze5dd3register-guide h3 {
    font-size: 1.35rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
}

.ze5dd3register-guide p {
    opacity: 0.85;
    font-size: 0.95rem;
    line-height: 1.8;
    margin-bottom: 1.5rem;
}

.ze5dd3register-guide strong {
    color: var(--accent-color);
}

.ze5dd3guide-steps {
    display: flex;
    flex-wrap: wrap;
    gap: 1.5rem;
}

.ze5dd3guide-step {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 0.9rem;
}

.ze5dd3step-num {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--gradient-accent);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.85rem;
    flex-shrink: 0;
}

.ze5dd3btn-register-lg {
    background: white !important;
    color: var(--primary-color) !important;
    padding: 1rem 2rem !important;
    border-radius: var(--radius-md) !important;
}

.ze5dd3btn-register-lg:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(255, 255, 255, 0.2);
}

/* ========== 安全保障 ========== */
.ze5dd3security-section {
    padding: var(--section-padding) 0;
    background: var(--light-bg);
}

.ze5dd3security-subtitle {
    color: var(--text-muted);
    font-size: 1.05rem;
    line-height: 1.8;
}

.ze5dd3security-card {
    background: var(--surface);
    border-radius: var(--radius-lg);
    padding: var(--card-padding);
    height: 100%;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-speed) var(--transition-easing);
    border: var(--card-border);
    display: flex;
    flex-direction: column;
}

.ze5dd3security-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.ze5dd3security-icon {
    width: 60px;
    height: 60px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    margin: 0 auto 1.25rem;
    background: var(--gradient-primary);
    color: white;
}

.ze5dd3security-card h3 {
    color: var(--dark-bg);
    font-weight: 700;
    text-align: center;
    margin-bottom: 1.25rem;
    font-size: 1.05rem;
}

.ze5dd3security-features {
    background: var(--light-bg);
    padding: 1rem 1.125rem;
    border-radius: var(--radius-md);
    border: var(--card-border);
    flex: 1;
}

.ze5dd3feature-item {
    display: flex;
    align-items: flex-start;
    margin-bottom: 0.6rem;
    gap: 0.5rem;
}

.ze5dd3feature-item:last-child {
    margin-bottom: 0;
}

.ze5dd3feature-item i {
    color: var(--accent-color);
    margin-top: 0.15rem;
    flex-shrink: 0;
}

.ze5dd3feature-item span {
    color: var(--gray-600);
    font-size: 0.875rem;
    line-height: 1.5;
}

.ze5dd3certificate-card {
    background: var(--surface);
    border-radius: var(--radius-lg);
    padding: var(--card-padding);
    text-align: center;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-speed) var(--transition-easing);
    height: 100%;
    border: var(--card-border);
}

.ze5dd3certificate-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.ze5dd3certificate-icon {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin: 0 auto 1.25rem;
    background: rgba(124, 58, 237, 0.1);
    color: var(--primary-color);
}

.ze5dd3certificate-card h4 {
    color: var(--dark-bg);
    font-weight: 700;
    margin-bottom: 0.5rem;
    font-size: 1rem;
}

.ze5dd3certificate-card p {
    color: var(--text-muted);
    font-size: 0.875rem;
    margin-bottom: 0;
    line-height: 1.6;
}

/* ========== 统计数据 ========== */
.ze5dd3stats-section {
    background: var(--gradient-primary);
    color: white;
    padding: 56px 0;
    position: relative;
    overflow: hidden;
}

.ze5dd3stats-section::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 80% 50%, rgba(20, 184, 166, 0.2) 0%, transparent 50%);
    pointer-events: none;
}

.ze5dd3stat-item {
    text-align: center;
    position: relative;
    z-index: 1;
    padding: 0.75rem 0.5rem;
}

.ze5dd3stat-number {
    font-size: clamp(1.5rem, 4vw, 2.5rem);
    font-weight: 800;
    margin-bottom: 0.35rem;
    letter-spacing: -0.02em;
    line-height: 1.2;
    word-break: keep-all;
}

.ze5dd3stat-label {
    font-size: 0.95rem;
    opacity: 0.85;
}

/* ========== FAQ ========== */
.ze5dd3faq-section {
    padding: var(--section-padding) 0;
    background: var(--surface);
}

.ze5dd3faq-accordion {
    --bs-accordion-border-width: 0;
    --bs-accordion-border-radius: var(--radius-md);
    --bs-accordion-inner-border-radius: var(--radius-md);
    --bs-accordion-btn-focus-box-shadow: none;
}

.ze5dd3faq-accordion .accordion-item {
    border: var(--card-border) !important;
    border-radius: var(--radius-md) !important;
    margin-bottom: 0.625rem;
    overflow: hidden;
    background: var(--surface);
}

.ze5dd3faq-accordion .accordion-item:last-child {
    margin-bottom: 0;
}

.ze5dd3faq-accordion .accordion-button {
    font-weight: 600;
    font-size: 0.975rem;
    color: var(--dark-bg);
    background: var(--surface);
    padding: 1rem 1.25rem;
    box-shadow: none !important;
    line-height: 1.5;
    word-break: break-word;
}

.ze5dd3faq-accordion .accordion-button:not(.collapsed) {
    background: var(--surface);
    color: var(--primary-color);
}

.ze5dd3faq-accordion .accordion-button::after {
    background-size: 1rem;
}

.ze5dd3faq-accordion .accordion-body {
    padding: 0 1.25rem 1rem;
    color: var(--text-muted);
    line-height: 1.75;
    font-size: 0.925rem;
    word-break: break-word;
}

.ze5dd3faq-accordion .accordion-body strong {
    color: var(--primary-color);
    font-weight: 600;
}

/* ========== 页脚 ========== */
.ze5dd3footer {
    background: var(--dark-bg);
    padding: 60px 0 30px;
    color: var(--gray-400);
}

.ze5dd3footer-brand img {
    max-width: 100%;
    height: auto;
}

.ze5dd3footer-title {
    color: white;
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 1.25rem;
}

.ze5dd3footer-links {
    list-style: none;
    padding: 0;
    margin: 0;
}

.ze5dd3footer-links li {
    margin-bottom: 0.6rem;
}

.ze5dd3footer-link {
    color: var(--gray-400);
    text-decoration: none;
    transition: color var(--transition-speed) var(--transition-easing);
    font-size: 0.9rem;
}

.ze5dd3footer-link:hover {
    color: var(--primary-light);
}

.ze5dd3footer-bottom {
    border-top: 1px solid var(--gray-700);
    padding-top: 1.5rem;
    color: var(--gray-500);
}

.ze5dd3footer-bottom a {
    color: var(--gray-400);
    text-decoration: none;
}

.ze5dd3footer-bottom a:hover {
    color: var(--primary-light);
}

/* ========== 文章区块 ========== */
#article {
    background: var(--light-bg) !important;
}

#article h2 {
    color: var(--dark-bg);
    font-weight: 700;
}

#article .card {
    border: var(--card-border);
    border-radius: var(--radius-md);
    transition: all var(--transition-speed) var(--transition-easing);
    margin-bottom: 0;
    overflow: hidden;
}

#article .row > .col > .card {
    height: 100%;
}

#article .card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

#article .card-body a {
    color: var(--dark-bg);
}

#article .card-body a:hover {
    color: var(--primary-color);
}

.ze5dd3thumb-home {
    width: 100%;
    height: 120px;
    object-fit: cover;
}

.ze5dd3friend-links {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem 1.25rem;
    list-style: none;
    padding: 0;
    margin: 0;
}

.ze5dd3friend-links li {
    margin: 0;
}

.ze5dd3friend-links a {
    color: var(--gray-400);
    text-decoration: none;
    font-size: 0.875rem;
    line-height: 1.6;
    word-break: break-all;
}

.ze5dd3friend-links a:hover {
    color: var(--primary-light);
}

/* ========== 响应式 ========== */
@media (min-width: 768px) and (max-width: 991px) {
    .ze5dd3about-section .row > .col-md-6:last-child:nth-child(odd),
    .ze5dd3download-section .ze5dd3download-col-last {
        margin-left: auto;
        margin-right: auto;
    }
}

@media (max-width: 991px) {
    :root {
        --section-padding: 60px;
        --card-padding: 1.25rem;
    }

    .ze5dd3hero-title {
        font-size: 2.5rem;
    }

    .ze5dd3section-header h2 {
        font-size: 1.85rem;
    }

    .ze5dd3feature-card-inner {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }

    .ze5dd3feature-list li {
        justify-content: center;
    }

    .ze5dd3register-guide {
        text-align: center;
    }

    .ze5dd3guide-steps {
        justify-content: center;
    }

    .ze5dd3register-guide .col-lg-4,
    .ze5dd3register-guide .col-12.col-lg-4 {
        margin-top: 1.25rem;
    }

    footer, .ze5dd3footer {
        text-align: center;
    }

    .ze5dd3footer-title {
        margin-top: 1.5rem;
    }
}

@media (max-width: 767px) {
    :root {
        --section-padding: 48px;
        --card-padding: 1.125rem;
    }

    /* 导航 */
    .ze5dd3navbar {
        padding: 0.5rem 0;
    }

    .ze5dd3navbar-brand img {
        height: 36px;
    }

    .ze5dd3navbar .navbar-collapse {
        margin-top: 0.5rem;
        max-height: 70vh;
        overflow-y: auto;
        -webkit-overflow-scrolling: touch;
        background: white;
        padding: 0.5rem 0.75rem;
        border-radius: var(--radius-md);
        box-shadow: var(--shadow-md);
    }

    .ze5dd3navbar .navbar-nav .nav-link {
        padding: 0.75rem 0.5rem !important;
        font-size: 0.95rem;
        min-height: 44px;
        display: flex;
        align-items: center;
    }

    /* Hero */
    .ze5dd3hero-section {
        padding: 2.5rem 0 3rem;
    }

    .ze5dd3hero-content {
        margin-bottom: 1.5rem;
    }

    .ze5dd3hero-badge {
        font-size: 0.8rem;
        padding: 0.4rem 0.75rem;
        margin-bottom: 1rem;
        line-height: 1.4;
    }

    .ze5dd3hero-title {
        font-size: 1.875rem;
        margin-bottom: 0.875rem;
    }

    .ze5dd3hero-subtitle {
        font-size: 0.95rem;
        margin-bottom: 0.75rem;
    }

    .ze5dd3hero-desc {
        font-size: 0.875rem;
        margin-bottom: 1.25rem;
        line-height: 1.7;
    }

    .ze5dd3hero-buttons {
        flex-direction: column;
        gap: 0.75rem;
        margin-bottom: 1.5rem;
    }

    .ze5dd3hero-buttons .btn {
        width: 100%;
        padding: 0.75rem 1.25rem;
        font-size: 0.95rem;
    }

    .ze5dd3hero-trust {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 0.625rem 1rem;
    }

    .ze5dd3trust-item {
        font-size: 0.8rem;
    }

    .ze5dd3trust-item:last-child {
        grid-column: 1 / -1;
        justify-content: center;
    }

    .ze5dd3hero-image-container {
        padding: 0.5rem 0 0;
    }

    .ze5dd3hero-image {
        max-width: 220px;
        margin: 0 auto;
    }

    /* 通用标题 */
    .ze5dd3section-header {
        margin-bottom: 1.75rem;
    }

    .ze5dd3section-header h2,
    .ze5dd3download-header h2,
    .ze5dd3security-header h2 {
        font-size: 1.5rem;
    }

    .ze5dd3section-desc,
    .ze5dd3download-subtitle,
    .ze5dd3security-subtitle {
        font-size: 0.925rem;
        line-height: 1.7;
    }

    .ze5dd3section-tag {
        font-size: 0.8rem;
        padding: 0.3rem 0.75rem;
    }

    .ze5dd3download-header.mb-5 {
        margin-bottom: 1.75rem !important;
    }

    /* 栅格间距 */
    .ze5dd3about-section .row,
    .ze5dd3features-section .row,
    .ze5dd3download-section .row,
    .ze5dd3security-section .row {
        --bs-gutter-y: 1rem;
    }

    /* 特点卡片 */
    .ze5dd3feature-card-inner {
        padding: 1.125rem;
        gap: 1rem;
    }

    .ze5dd3feature-icon {
        width: 52px;
        height: 52px;
        font-size: 1.25rem;
    }

    .ze5dd3feature-card-sm {
        min-height: auto;
    }

    /* 统计数据 */
    .ze5dd3stats-section {
        padding: 2.25rem 0;
    }

    .ze5dd3stats-section .row {
        --bs-gutter-x: 0.625rem;
        --bs-gutter-y: 0.5rem;
    }

    .ze5dd3stat-item {
        padding: 0.5rem 0.25rem;
    }

    .ze5dd3stat-label {
        font-size: 0.8rem;
        line-height: 1.35;
    }

    /* 下载卡片 */
    .ze5dd3download-card {
        height: auto;
    }

    .ze5dd3download-info {
        flex: none;
    }

    .ze5dd3download-card-head {
        flex-direction: row;
        text-align: left;
        padding-right: 3.5rem;
        padding-top: 0;
        gap: 0.75rem;
    }

    .ze5dd3ios-card .ze5dd3download-card-body {
        padding-top: 2.5rem;
    }

    .ze5dd3platform-icon {
        width: 48px;
        height: 48px;
        font-size: 1.25rem;
        flex-shrink: 0;
    }

    .ze5dd3download-card-head h3 {
        font-size: 1rem;
    }

    .ze5dd3about-section .row > .col-md-6:last-child,
    .ze5dd3download-section .ze5dd3download-col-last {
        max-width: 100%;
    }

    /* 注册引导 */
    .ze5dd3register-guide {
        padding: 1.25rem;
        text-align: left;
    }

    .ze5dd3register-guide h3 {
        font-size: 1.125rem;
    }

    .ze5dd3register-guide p {
        font-size: 0.875rem;
        margin-bottom: 1rem;
    }

    .ze5dd3guide-steps {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.625rem;
    }

    .ze5dd3btn-register-lg {
        width: 100%;
        display: flex;
        justify-content: center;
        margin-top: 0.5rem;
    }

    /* 安全认证 */
    .ze5dd3security-certificates.mt-5 {
        margin-top: 1.5rem !important;
    }

    /* FAQ */
    .ze5dd3faq-accordion .accordion-button {
        font-size: 0.875rem;
        padding: 0.875rem 2.5rem 0.875rem 1rem;
        line-height: 1.45;
    }

    .ze5dd3faq-accordion .accordion-body {
        padding: 0 1rem 0.875rem;
        font-size: 0.875rem;
    }

    .ze5dd3faq-accordion .accordion-header {
        margin-bottom: 0;
    }

    /* 文章 */
    #article {
        padding-top: 2.5rem !important;
        padding-bottom: 2.5rem !important;
    }

    #article .d-flex.justify-content-between {
        flex-direction: column;
        align-items: stretch !important;
        gap: 0.75rem;
    }

    #article .d-flex .btn-outline-primary {
        width: 100%;
        text-align: center;
    }

    #article .ze5dd3thumb-home {
        height: 180px;
    }

    #article .card-body {
        padding: 0.875rem;
    }

    #article h3.h5 {
        font-size: 0.925rem;
        line-height: 1.45;
        margin-bottom: 0;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
    }

    /* 页脚 */
    .ze5dd3footer {
        padding: 2.5rem 0 1.5rem;
    }

    .ze5dd3footer-brand {
        display: inline-block;
    }

    .ze5dd3footer .row > [class*="col"]:first-child .ze5dd3footer-title,
    .ze5dd3footer .row > [class*="col"]:first-child + [class*="col"] .ze5dd3footer-title {
        margin-top: 0;
    }

    .ze5dd3footer-title {
        margin-top: 1.25rem;
        margin-bottom: 0.75rem;
    }

    .ze5dd3footer p {
        font-size: 0.875rem;
        line-height: 1.65;
    }

    .ze5dd3footer-bottom {
        padding-top: 1.25rem;
        font-size: 0.825rem;
        line-height: 1.75;
    }

    .ze5dd3footer-bottom p {
        margin-bottom: 0.5rem;
    }

    /* 移动端取消 hover 位移，避免点击后卡片错位 */
    .ze5dd3about-card:hover,
    .ze5dd3feature-card:hover,
    .ze5dd3download-card:hover,
    .ze5dd3security-card:hover,
    .ze5dd3certificate-card:hover,
    #article .card:hover {
        transform: none;
    }
}

@media (max-width: 575px) {
    :root {
        --section-padding: 36px;
        --card-padding: 1rem;
    }

    .ze5dd3container.container {
        padding-left: 0.75rem;
        padding-right: 0.75rem;
    }

    .ze5dd3hero-title {
        font-size: 1.625rem;
    }

    .ze5dd3hero-image {
        max-width: 180px;
    }

    .ze5dd3section-header h2,
    .ze5dd3download-header h2,
    .ze5dd3security-header h2 {
        font-size: 1.35rem;
    }

    .ze5dd3stat-number {
        font-size: 1.375rem;
    }

    .ze5dd3stat-label {
        font-size: 0.75rem;
    }

    .ze5dd3download-card-head {
        padding-right: 3rem;
    }

    .ze5dd3platform-badge {
        top: 0.625rem;
        right: 0.625rem;
        font-size: 0.65rem;
    }

    .ze5dd3register-guide {
        border-radius: var(--radius-lg);
    }

    #article .ze5dd3thumb-home {
        height: 160px;
    }

    .ze5dd3footer-bottom a {
        display: inline-block;
        margin: 0.15rem 0;
    }
}

/* ========== 通用优化 ========== */
html {
    scroll-behavior: smooth;
    font-size: 16px;
    scroll-padding-top: 70px;
}

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

.btn {
    position: relative;
}

.btn:active {
    transform: scale(0.98);
}

.ze5dd3btn {
    white-space: normal;
    overflow: visible;
    text-overflow: clip;
}

input:focus, select:focus, textarea:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(124, 58, 237, 0.2);
}

.navbar-toggler {
    border: none;
    padding: 0.5rem;
}

/* 列表页/内容页兼容 */
.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;
}

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

@media (max-width: 767px) {
    .listbox .e2 li h2.h5 {
        font-size: 1rem;
        margin-bottom: 0.35rem;
        line-height: 1.35;
    }

    .listbox .e2 li p {
        font-size: 0.9rem;
        line-height: 1.5;
    }

    .ze5dd3thumb-list,
    .ze5dd3thumb-related {
        height: 72px !important;
    }

    .ze5dd3thumb-side {
        height: 50px !important;
    }

    .ze5dd3thumb-cover {
        max-width: 100% !important;
        width: 100%;
        height: 170px !important;
        margin: 0 auto;
    }
}

@media (max-width: 575px) {
    .ze5dd3thumb-list,
    .ze5dd3thumb-related {
        height: 64px !important;
    }

    .ze5dd3thumb-side {
        height: 46px !important;
    }

    .ze5dd3thumb-cover {
        height: 150px !important;
    }

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

/* APP预览（保留兼容） */
.app-preview-container {
    position: relative;
    perspective: 1000px;
    height: 500px;
}

.app-preview {
    position: relative;
    width: 100%;
    height: 100%;
    transform-style: preserve-3d;
}

.app-screen {
    position: absolute;
    width: 280px;
    height: 580px;
    border-radius: 40px;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.app-screen-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.table-responsive {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.form-control {
    width: 100%;
}

.listbox .card,
.modal .card {
    margin-bottom: 1rem;
}

.modal-dialog {
    margin: 1rem auto;
}

@media (max-width: 575px) {
    .modal-dialog {
        margin: 0.5rem;
    }
}