/* 全局样式 */
:root {
    --primary-color: #1a73e8;
    --primary-light: #4285f4;
    --primary-dark: #1557b0;
    --secondary-color: #f8f9fa;
    --accent-color: #34a853;
    --text-color: #333;
    --text-light: #666;
    --text-lighter: #999;
    --background-color: #fff;
    --border-color: #e0e0e0;
    --shadow-color: rgba(0, 0, 0, 0.1);
    --success-color: #34a853;
    --warning-color: #fbbc05;
    --danger-color: #ea4335;
    --content-width: 1200px;
    --section-padding: 5rem;
    --border-radius: 8px;
    --transition: all 0.3s ease;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--background-color);
    padding-top: 0;
}

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

ul {
    list-style: none;
}

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

.z75a0dcontainer {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    width: 100%;
}

/* 顶部导航样式优化 */
.z75a0dsite-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: #fff;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    z-index: 1000;
}

.z75a0dsite-header.scrolled {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.z75a0dheader-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 20px;
    max-width: 1200px;
    margin: 0 auto;
}

.z75a0dlogo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.z75a0dlogo i {
    font-size: 24px;
    color: #1a73e8;
}

.z75a0dlogo-text h1 {
    font-size: 20px;
    font-weight: 600;
    color: #333;
    margin: 0;
    line-height: 1.2;
}

.z75a0dlogo-text p {
    font-size: 12px;
    color: #666;
    margin: 0;
}

.z75a0dmain-nav ul {
    display: flex;
    gap: 30px;
    margin: 0;
    padding: 0;
    list-style: none;
}

.z75a0dmain-nav a {
    color: #333;
    text-decoration: none;
    font-size: 15px;
    font-weight: 500;
    padding: 8px 0;
    position: relative;
    transition: color 0.3s ease;
}

.z75a0dmain-nav a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: #1a73e8;
    transition: width 0.3s ease;
}

.z75a0dmain-nav a:hover,
.z75a0dmain-nav a.active {
    color: #1a73e8;
}

.z75a0dmain-nav a:hover::after,
.z75a0dmain-nav a.active::after {
    width: 100%;
}

.z75a0dheader-contact .z75a0dcontact-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background-color: var(--primary-color);
    color: white;
    padding: 0.75rem 1.5rem;
    border-radius: var(--border-radius);
    font-weight: 500;
    transition: all 0.3s ease;
}

.z75a0dheader-contact .z75a0dcontact-btn:hover {
    background-color: var(--primary-dark);
    transform: translateY(-2px);
}

/* 移动端导航样式 */
.z75a0dmobile-nav-toggle {
    display: none;
    background: none;
    border: none;
    padding: 10px;
    cursor: pointer;
}

.z75a0dmobile-nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: #333;
    margin: 5px 0;
    transition: all 0.3s ease;
}

/* 移动端导航样式 */
@media screen and (max-width: 768px) {
    .z75a0dheader-container {
        padding: 10px 15px;
    }

    .z75a0dlogo i {
        font-size: 20px;
    }

    .z75a0dlogo-text h1 {
        font-size: 18px;
    }

    .z75a0dlogo-text p {
        font-size: 11px;
    }

    .z75a0dmobile-nav-toggle {
        display: block;
        z-index: 10120;
        position: relative;
    }

    .z75a0dmobile-nav-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }

    .z75a0dmobile-nav-toggle.active span:nth-child(2) {
        opacity: 0;
    }

    .z75a0dmobile-nav-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -6px);
    }

    .z75a0dmain-nav {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        max-width: 300px;
        height: 100vh;
        height: 100dvh;
        background: #fff;
        padding: 80px 20px 20px;
        transition: right 0.3s ease;
        box-shadow: -5px 0 15px rgba(0,0,0,0.1);
        z-index: 10100;
        overflow-y: auto;
        -webkit-overflow-scrolling: touch;
    }

    .z75a0dmain-nav.active {
        right: 0;
    }

    .z75a0dmain-nav ul {
        flex-direction: column;
        gap: 20px;
    }

    .z75a0dmain-nav a {
        display: block;
        padding: 12px 0;
        font-size: 16px;
    }

    .z75a0dmain-nav a::after {
        display: none;
    }
}

/* 小屏幕移动端适配 */
@media screen and (max-width: 480px) {
    .z75a0dheader-container {
        padding: 8px 12px;
    }

    .z75a0dlogo i {
        font-size: 18px;
    }

    .z75a0dlogo-text h1 {
        font-size: 16px;
    }

    .z75a0dlogo-text p {
        font-size: 10px;
    }

    .z75a0dmain-nav {
        width: 85%;
    }
}

/* 主横幅样式优化 */
.z75a0dhero {
    padding: 100px 0 80px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    position: relative;
    overflow: hidden;
    margin-top: 0;
}

.z75a0dhero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('pattern.png') repeat;
    opacity: 0.1;
    animation: movePattern 20s linear infinite;
}

@keyframes movePattern {
    0% { background-position: 0 0; }
    100% { background-position: 100% 100%; }
}

.z75a0dhero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: center;
    max-width: var(--content-width);
    margin: 0 auto;
    padding: 0 2rem;
}

.z75a0dhero-text {
    padding-right: 20px;
    flex: 1;
    max-width: 600px;
}

.z75a0dhero-image {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
}

.z75a0dhero-image img {
    max-width: 100%;
    height: auto;
}

.z75a0dfeatured-image {
    max-width: 100%;
    height: auto;
    border-radius: var(--border-radius);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

.z75a0dfeatured-image:hover {
    transform: translateY(-5px);
}

.z75a0dhero-text h2 {
    font-size: 3rem;
    margin-bottom: 1rem;
    line-height: 1.2;
}

.z75a0dhero-subtitle {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    opacity: 0.9;
    line-height: 1.6;
}

.z75a0dhero-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin: 3rem 0;
}

.z75a0dstat-item {
    background-color: rgba(255, 255, 255, 0.1);
    padding: 1.5rem;
    border-radius: var(--border-radius);
    text-align: center;
    transition: var(--transition);
}

.z75a0dstat-item:hover {
    transform: translateY(-5px);
    background-color: rgba(255, 255, 255, 0.2);
}

.z75a0dstat-icon {
    font-size: 2rem;
    margin-bottom: 1rem;
}

.z75a0dstat-number {
    display: block;
    font-size: 2rem;
    font-weight: bold;
    margin-bottom: 0.5rem;
}

.z75a0dstat-label {
    font-size: 1rem;
    opacity: 0.9;
}

.z75a0ddownload-buttons {
    display: flex;
    gap: 20px;
    margin-top: 30px;
    flex-wrap: wrap;
}

.z75a0ddownload-btn {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 24px;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 500;
    text-decoration: none;
    transition: all 0.3s ease;
    min-width: 180px;
    justify-content: center;
}

.z75a0ddownload-btn i {
    font-size: 20px;
}

.z75a0ddownload-btn.android {
    background: #3DDC84;
    color: #fff;
}

.z75a0ddownload-btn.ios {
    background: #000;
    color: #fff;
}

.z75a0ddownload-btn.register {
    background: #007bff;
    color: #fff;
}

.z75a0ddownload-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

/* 平台优势 */
.z75a0dfeatures {
    padding: var(--section-padding) 0;
    background: linear-gradient(to bottom, #f8f9fa, #ffffff);
}

.z75a0dsection-header {
    text-align: center;
    margin-bottom: 4rem;
}

.z75a0dsection-tag {
    display: inline-block;
    padding: 0.5rem 1.5rem;
    background-color: var(--primary-color);
    color: white;
    border-radius: 2rem;
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: 1rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.z75a0dsection-title {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: var(--text-color);
    position: relative;
    display: inline-block;
}

.z75a0dsection-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 50px;
    height: 3px;
    background-color: var(--primary-color);
}

.z75a0dsection-subtitle {
    color: var(--text-light);
    max-width: 600px;
    margin: 0 auto;
    font-size: 1.1rem;
    line-height: 1.6;
}

.z75a0dfeatures-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    max-width: var(--content-width);
    margin: 0 auto;
    padding: 0 2rem;
}

.z75a0dfeature-card {
    padding: 30px;
    text-align: center;
    background: #fff;
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.08);
    transition: transform 0.3s ease;
}

.z75a0dfeature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--primary-light));
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.z75a0dfeature-card:hover::before {
    transform: scaleX(1);
}

.z75a0dfeature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.12);
}

.z75a0dfeature-icon {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 1.5rem;
    transition: var(--transition);
}

.z75a0dfeature-card:hover .z75a0dfeature-icon {
    transform: scale(1.1);
    color: var(--primary-light);
}

.z75a0dfeature-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-color);
}

.z75a0dfeature-card p {
    color: var(--text-light);
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.z75a0dfeature-card ul {
    color: var(--text-light);
}

.z75a0dfeature-card ul li {
    margin-bottom: 0.75rem;
    padding-left: 1.5rem;
    position: relative;
    transition: var(--transition);
}

.z75a0dfeature-card ul li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--success-color);
    font-weight: bold;
}

.z75a0dfeature-card:hover ul li {
    transform: translateX(5px);
}

/* 下载安装 */
.z75a0ddownload {
    padding: var(--section-padding) 0;
    background: linear-gradient(135deg, #f8f9fa, #ffffff);
}

.z75a0ddownload-content {
    max-width: var(--content-width);
    margin: 0 auto;
    padding: 0 2rem;
}

.z75a0ddownload-platforms {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
    margin-bottom: 4rem;
}

.z75a0dplatform-card {
    background: white;
    border-radius: 20px;
    padding: 2.5rem;
    display: flex;
    align-items: center;
    gap: 2rem;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.z75a0dplatform-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(to right, var(--primary-color), var(--primary-light));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.3s ease;
}

.z75a0dplatform-card:hover::before {
    transform: scaleX(1);
}

.z75a0dplatform-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.1);
}

.z75a0dplatform-icon {
    width: 80px;
    height: 80px;
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    color: white;
}

.z75a0dplatform-card.ios .z75a0dplatform-icon {
    background: linear-gradient(135deg, #000000, #333333);
}

.z75a0dplatform-card.android .z75a0dplatform-icon {
    background: linear-gradient(135deg, #3DDC84, #2BB673);
}

.z75a0dplatform-info {
    flex: 1;
}

.z75a0dplatform-info h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    color: var(--text-color);
}

.z75a0dplatform-info p {
    color: var(--text-light);
    margin-bottom: 1rem;
}

.z75a0dversion-info {
    display: flex;
    gap: 1.5rem;
    color: var(--text-lighter);
    font-size: 0.9rem;
}

.z75a0ddownload-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border-radius: 25px;
    background: var(--primary-color);
    color: white;
    font-weight: 500;
    transition: all 0.3s ease;
}

.z75a0ddownload-btn:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
}

.z75a0ddownload-steps {
    margin-top: 3rem;
    padding: 2rem;
    background: #fff;
    border-radius: 16px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
}

.z75a0dsteps-title {
    text-align: center;
    font-size: 1.8rem;
    color: #333;
    margin-bottom: 2rem;
    position: relative;
    padding-bottom: 1rem;
}

.z75a0dsteps-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, #007bff, #00bcd4);
}

.z75a0dsteps-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    margin-top: 40px;
}

.z75a0dstep-item {
    text-align: center;
    padding: 20px;
}

.z75a0dstep-item:hover {
    transform: translateY(-5px);
}

.z75a0dstep-icon {
    font-size: 2.5rem;
    color: #007bff;
    margin-bottom: 1rem;
}

.z75a0dstep-title {
    font-size: 1.2rem;
    color: #333;
    margin-bottom: 0.5rem;
}

.z75a0dstep-desc {
    color: #666;
    font-size: 0.9rem;
}

/* 使用指南 */
.z75a0dguide {
    padding: var(--section-padding) 0;
    background: linear-gradient(135deg, #f8f9fa, #ffffff);
}

.z75a0dguide-content {
    max-width: var(--content-width);
    margin: 0 auto;
    padding: 0 2rem;
}

.z75a0dguide-steps {
    display: flex;
    flex-direction: column;
    gap: 30px;
    margin-top: 40px;
}

.z75a0dguide-step {
    display: flex;
    gap: 30px;
    padding: 30px;
    background: #fff;
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.08);
    transition: transform 0.3s ease;
}

.z75a0dguide-step:hover {
    transform: translateY(-2px);
}

.z75a0dstep-number {
    font-size: 48px;
    font-weight: bold;
    color: #007bff;
    opacity: 0.2;
    min-width: 80px;
    text-align: center;
}

.z75a0dstep-content {
    flex: 1;
}

.z75a0dstep-content h3 {
    font-size: 24px;
    margin-bottom: 15px;
    color: #333;
}

.z75a0dstep-content p {
    color: #666;
    margin-bottom: 20px;
    line-height: 1.6;
}

.z75a0dstep-features {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.z75a0dfeature-tag {
    padding: 6px 16px;
    background: rgba(0,123,255,0.1);
    color: #007bff;
    border-radius: 20px;
    font-size: 14px;
}

/* 安全保障 */
.z75a0dsecurity {
    padding: var(--section-padding) 0;
    background: linear-gradient(135deg, #f8f9fa, #ffffff);
}

.z75a0dsecurity-content {
    max-width: var(--content-width);
    margin: 0 auto;
    padding: 0 2rem;
}

.z75a0dsecurity-features {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
    margin-bottom: 4rem;
}

.z75a0dsecurity-card {
    display: flex;
    gap: 20px;
    padding: 30px;
    background: #fff;
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.08);
}

.z75a0dsecurity-card::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--primary-light));
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.z75a0dsecurity-card:hover::after {
    transform: scaleX(1);
}

.z75a0dsecurity-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 30px rgba(0,0,0,0.12);
}

.z75a0dsecurity-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    color: white;
    flex-shrink: 0;
}

.z75a0dsecurity-info {
    flex: 1;
}

.z75a0dsecurity-info h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-color);
}

.z75a0dsecurity-info p {
    color: var(--text-light);
    margin-bottom: 1.5rem;
}

.z75a0dsecurity-details {
    list-style: none;
    padding: 0;
    margin: 0;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
}

.z75a0dsecurity-details li {
    color: var(--text-light);
    padding-left: 1.5rem;
    position: relative;
}

.z75a0dsecurity-details li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: bold;
}

.z75a0dsecurity-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.z75a0dstat-card {
    background: white;
    border-radius: 15px;
    padding: 2rem;
    display: flex;
    align-items: center;
    gap: 1.5rem;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
}

.z75a0dstat-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.1);
}

.z75a0dstat-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    color: white;
}

.z75a0dstat-info {
    display: flex;
    flex-direction: column;
}

.z75a0dstat-number {
    font-size: 2rem;
    font-weight: bold;
    color: var(--text-color);
    margin-bottom: 0.5rem;
}

.z75a0dstat-label {
    color: var(--text-light);
    font-size: 0.95rem;
}

/* 底部导航 */
.z75a0dsite-footer {
    background: linear-gradient(135deg, #1a1a1a, #333333);
    color: white;
    padding: 4rem 0 2rem;
    position: relative;
    overflow: hidden;
}

.z75a0dsite-footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('pattern-dark.png') repeat;
    opacity: 0.05;
    animation: movePattern 20s linear infinite;
}

.z75a0dfooter-content {
    position: relative;
    z-index: 1;
    max-width: var(--content-width);
    margin: 0 auto;
    padding: 0 2rem;
}

.z75a0dfooter-main {
    display: grid;
    grid-template-columns: 2fr 3fr;
    gap: 4rem;
    margin-bottom: 3rem;
}

.z75a0dfooter-brand {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.z75a0dfooter-brand .z75a0dlogo {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.z75a0dfooter-brand .z75a0dlogo i {
    font-size: 2.5rem;
    color: var(--primary-color);
}

.z75a0dfooter-brand .z75a0dlogo-text h2 {
    font-size: 1.8rem;
    margin-bottom: 0.5rem;
    color: white;
    font-weight: 700;
}

.z75a0dfooter-brand .z75a0dlogo-text p {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.95rem;
    line-height: 1.6;
}

.z75a0dfooter-social {
    display: flex;
    gap: 1.5rem;
}

.z75a0dsocial-link {
    width: 45px;
    height: 45px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.2rem;
    transition: all 0.3s ease;
}

.z75a0dsocial-link:hover {
    background: var(--primary-color);
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.2);
}

.z75a0dfooter-links {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
}

.z75a0dlink-group h3 {
    font-size: 1.2rem;
    margin-bottom: 1.5rem;
    color: white;
    position: relative;
    padding-bottom: 0.5rem;
    font-weight: 600;
}

.z75a0dlink-group h3::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 40px;
    height: 2px;
    background: var(--primary-color);
    border-radius: 2px;
}

.z75a0dlink-group ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.z75a0dlink-group ul li {
    margin-bottom: 1rem;
}

.z75a0dlink-group ul a {
    color: rgba(255, 255, 255, 0.7);
    transition: all 0.3s ease;
    font-size: 0.95rem;
    display: inline-block;
    position: relative;
}

.z75a0dlink-group ul a::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 1px;
    background: var(--primary-color);
    transition: width 0.3s ease;
}

.z75a0dlink-group ul a:hover {
    color: white;
    padding-left: 5px;
}

.z75a0dlink-group ul a:hover::after {
    width: 100%;
}

.z75a0dfooter-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    margin-top: 2rem;
}

.z75a0dfooter-legal {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.z75a0dfooter-legal p {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.9rem;
}

.z75a0dlegal-links {
    display: flex;
    gap: 1.5rem;
}

.z75a0dlegal-links a {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.9rem;
    transition: all 0.3s ease;
}

.z75a0dlegal-links a:hover {
    color: var(--primary-color);
}

.z75a0dfooter-cert {
    display: flex;
    gap: 2rem;
}

.z75a0dcert-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.9rem;
    padding: 0.5rem 1rem;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    transition: all 0.3s ease;
}

.z75a0dcert-item:hover {
    background: rgba(255, 255, 255, 0.15);
    transform: translateY(-2px);
}

.z75a0dcert-item i {
    color: var(--primary-color);
}

@media (max-width: 992px) {
    .z75a0dfooter-main {
        grid-template-columns: 1fr;
        gap: 3rem;
    }

    .z75a0dfooter-links {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .z75a0dsite-footer {
        padding: 3rem 0 1.5rem;
    }

    .z75a0dfooter-content {
        padding: 0 1.5rem;
    }

    .z75a0dfooter-brand .z75a0dlogo-text h2 {
        font-size: 1.5rem;
    }

    .z75a0dfooter-links {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .z75a0dfooter-bottom {
        flex-direction: column;
        gap: 1.5rem;
        text-align: center;
    }

    .z75a0dfooter-legal {
        flex-direction: column;
        gap: 1rem;
    }

    .z75a0dlegal-links {
        flex-wrap: wrap;
        justify-content: center;
    }

    .z75a0dfooter-cert {
        flex-wrap: wrap;
        justify-content: center;
    }
}

@media (max-width: 576px) {
    .z75a0dsite-footer {
        padding: 2rem 0 1rem;
    }

    .z75a0dfooter-content {
        padding: 0 1rem;
    }

    .z75a0dfooter-brand .z75a0dlogo-text h2 {
        font-size: 1.3rem;
    }

    .z75a0dsocial-link {
        width: 40px;
        height: 40px;
        font-size: 1.1rem;
    }

    .z75a0dlink-group h3 {
        font-size: 1.1rem;
    }

    .z75a0dlink-group ul a {
        font-size: 0.9rem;
    }

    .z75a0dfooter-legal p,
    .z75a0dlegal-links a,
    .z75a0dcert-item {
        font-size: 0.85rem;
    }
}

/* 响应式设计 */
@media (max-width: 1200px) {
    .z75a0dhero-content,
    .z75a0dfeatures-grid,
    .z75a0ddownload-content,
    .z75a0dguide-content,
    .z75a0dsecurity-content,
    .z75a0dfooter-content {
        padding: 0 1.5rem;
    }

    .z75a0dhero-text h2 {
        font-size: 2.5rem;
    }

    .z75a0dhero-stats {
        grid-template-columns: repeat(3, 1fr);
    }

    .z75a0dfeatures-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 992px) {
    .z75a0dhero-content {
        flex-direction: column;
        text-align: center;
    }
    
    .z75a0dhero-text {
        max-width: 100%;
    }
    
    .z75a0dhero-image {
        margin-top: 2rem;
    }

    .z75a0dhero-stats {
        justify-content: center;
    }

    .z75a0dfeatures-grid,
    .z75a0ddownload-steps,
    .z75a0dguide-steps,
    .z75a0dsecurity-features {
        grid-template-columns: repeat(2, 1fr);
    }

    section {
        scroll-margin-top: 60px;
    }
}

@media (max-width: 576px) {
    .z75a0dcontainer {
        padding: 0 10px;
    }

    .z75a0dhero-text h2 {
        font-size: 1.6rem;
    }

    .z75a0dhero-subtitle {
        font-size: 0.95rem;
    }

    .z75a0dsection-title {
        font-size: 1.4rem;
    }

    .z75a0dsection-subtitle {
        font-size: 0.9rem;
    }

    .z75a0dfeature-card h3,
    .z75a0dguide-step h3,
    .z75a0dsecurity-card h3 {
        font-size: 1.1rem;
    }

    .z75a0dfeature-card p,
    .z75a0dguide-step p,
    .z75a0dsecurity-card p {
        font-size: 0.85rem;
    }

    .z75a0ddownload-btn {
        font-size: 0.9rem;
        padding: 0.7rem 1.2rem;
    }

    .z75a0dplatform-card h3 {
        font-size: 1.1rem;
    }

    .z75a0dplatform-card p {
        font-size: 0.85rem;
    }

    .z75a0dversion-info {
        font-size: 0.8rem;
    }

    .z75a0dstep-details li {
        font-size: 0.85rem;
    }

    .z75a0dsecurity-details li {
        font-size: 0.85rem;
    }

    .z75a0dstat-card h3 {
        font-size: 1.1rem;
    }

    .z75a0dstat-card p {
        font-size: 0.85rem;
    }

    .z75a0dfooter-brand h2 {
        font-size: 1.3rem;
    }

    .z75a0dfooter-brand p {
        font-size: 0.85rem;
    }

    .z75a0dlink-group h3 {
        font-size: 1rem;
    }

    .z75a0dlink-group a {
        font-size: 0.85rem;
    }

    .z75a0dfooter-legal p,
    .z75a0dlegal-links a,
    .z75a0dcert-item {
        font-size: 0.8rem;
    }

    .z75a0dmain-nav {
        padding: 1.5rem;
    }

    .z75a0dmain-nav ul {
        gap: 1rem;
    }

    .z75a0dmain-nav a {
        font-size: 1.1rem;
        padding: 0.8rem;
    }

    .z75a0dmobile-nav-toggle {
        right: 0.5rem;
    }

    .z75a0dmobile-nav-toggle span {
        width: 1.8rem;
    }
}

/* 滚动到目标位置时的样式 */
section {
    scroll-margin-top: 80px;
}

@media (max-width: 768px) {
    section {
        scroll-margin-top: 60px;
    }
}

@media (max-width: 576px) {
    section {
        scroll-margin-top: 50px;
    }
}

/* 新增独立下载板块 */
.z75a0ddownload-section {
    width: 100%;
    max-width: 1200px;
    margin: 4rem auto;
    padding: 0 20px;
    position: relative;
}

.z75a0ddownload-container {
    background: linear-gradient(135deg, #f8f9fa, #ffffff);
    border-radius: 24px;
    padding: 3rem;
    box-shadow: 0 10px 30px rgba(0,0,0,0.05);
    position: relative;
    overflow: hidden;
}

.z75a0ddownload-container::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('pattern-light.png') repeat;
    opacity: 0.05;
    animation: movePattern 20s linear infinite;
}

.z75a0ddownload-header {
    text-align: center;
    margin-bottom: 3rem;
}

.z75a0ddownload-title {
    font-size: 2.5rem;
    color: var(--text-color);
    margin-bottom: 1rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.z75a0ddownload-subtitle {
    font-size: 1.2rem;
    color: var(--text-light);
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.6;
    }
    
    .z75a0ddownload-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
    margin: 40px 0;
}

.z75a0ddownload-card {
    padding: 30px;
    border-radius: 12px;
    background: #fff;
    box-shadow: 0 4px 12px rgba(0,0,0,0.08);
}

.z75a0ddownload-icon {
    width: 80px;
    height: 80px;
    background: var(--secondary-color);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    margin-bottom: 1.5rem;
    color: var(--primary-color);
    transition: all 0.3s ease;
}

.z75a0ddownload-card:hover .z75a0ddownload-icon {
    transform: scale(1.1);
}

.z75a0ddownload-card.ios .z75a0ddownload-icon {
    background: #000;
    color: white;
}

.z75a0ddownload-card.android .z75a0ddownload-icon {
    background: var(--success-color);
    color: white;
}

.z75a0ddownload-card-title {
    font-size: 1.8rem;
    color: var(--text-color);
    margin-bottom: 1rem;
    font-weight: 600;
}

.z75a0ddownload-card-desc {
    font-size: 1.1rem;
    color: var(--text-light);
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.z75a0ddownload-features {
    display: flex;
    flex-wrap: wrap;
    gap: 0.8rem;
    margin-bottom: 2rem;
    justify-content: center;
}

.z75a0ddownload-feature {
    padding: 0.6rem 1.2rem;
    background: var(--secondary-color);
    border-radius: 20px;
    font-size: 0.95rem;
    color: var(--text-light);
    transition: all 0.3s ease;
}

.z75a0ddownload-feature:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-2px);
}

.z75a0ddownload-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.8rem;
    padding: 1.2rem 2.5rem;
    background: var(--primary-color);
    color: white;
    border-radius: 16px;
    font-size: 1.2rem;
    font-weight: 500;
    text-decoration: none;
    transition: all 0.3s ease;
    margin-top: auto;
    position: relative;
    overflow: hidden;
}

.z75a0ddownload-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg, rgba(255,255,255,0.1), rgba(255,255,255,0.05));
    transform: translateX(-100%);
    transition: transform 0.3s ease;
}

.z75a0ddownload-btn:hover::before {
    transform: translateX(0);
}

.z75a0ddownload-btn:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.2);
}

.z75a0ddownload-btn i {
    font-size: 1.4rem;
}

.z75a0ddownload-steps {
    background: white;
    border-radius: 20px;
    padding: 2.5rem;
    box-shadow: 0 4px 20px rgba(0,0,0,0.08);
    margin-top: 3rem;
}

.z75a0dsteps-title {
    font-size: 1.8rem;
    color: var(--text-color);
    margin-bottom: 2.5rem;
    text-align: center;
    font-weight: 600;
}

.z75a0dsteps-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.z75a0dstep-item {
    text-align: center;
    position: relative;
}

.z75a0dstep-item:not(:last-child)::after {
    content: '';
    position: absolute;
    top: 25px;
    right: -1rem;
    width: 2rem;
    height: 2px;
    background: var(--primary-color);
    opacity: 0.3;
}

.z75a0dstep-number {
    width: 50px;
    height: 50px;
    background: var(--secondary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--primary-color);
    margin: 0 auto 1rem;
    transition: all 0.3s ease;
}

.z75a0dstep-item:hover .z75a0dstep-number {
    background: var(--primary-color);
    color: white;
    transform: scale(1.1);
}

.z75a0dstep-title {
    font-size: 1.2rem;
    color: var(--text-color);
    margin-bottom: 0.8rem;
    font-weight: 500;
}

.z75a0dstep-desc {
    font-size: 1rem;
    color: var(--text-light);
    line-height: 1.6;
}

@media (max-width: 992px) {
    .z75a0ddownload-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .z75a0dsteps-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .z75a0dstep-item:nth-child(2)::after {
        display: none;
    }
}

@media (max-width: 768px) {
    .z75a0ddownload-section {
        margin: 3rem auto;
        padding: 0 15px;
    }

    .z75a0ddownload-container {
        padding: 2rem;
    }

    .z75a0ddownload-title {
        font-size: 2rem;
    }

    .z75a0ddownload-subtitle {
        font-size: 1.1rem;
    }

    .z75a0ddownload-card {
        padding: 2rem;
    }

    .z75a0ddownload-icon {
        width: 70px;
        height: 70px;
        font-size: 1.8rem;
    }

    .z75a0ddownload-card-title {
        font-size: 1.6rem;
    }

    .z75a0ddownload-card-desc {
        font-size: 1rem;
    }

    .z75a0ddownload-btn {
        padding: 1rem 2rem;
        font-size: 1.1rem;
    }
}

@media (max-width: 576px) {
    .z75a0ddownload-section {
        margin: 2rem auto;
    }

    .z75a0ddownload-container {
        padding: 1.5rem;
    }

    .z75a0ddownload-title {
        font-size: 1.8rem;
    }

    .z75a0ddownload-subtitle {
        font-size: 1rem;
    }

    .z75a0ddownload-card {
        padding: 1.5rem;
    }

    .z75a0ddownload-icon {
        width: 60px;
        height: 60px;
        font-size: 1.6rem;
    }

    .z75a0ddownload-card-title {
        font-size: 1.4rem;
    }

    .z75a0ddownload-card-desc {
        font-size: 0.95rem;
    }

    .z75a0ddownload-feature {
        font-size: 0.9rem;
        padding: 0.5rem 1rem;
    }

    .z75a0ddownload-btn {
        padding: 0.9rem 1.8rem;
        font-size: 1rem;
    }

    .z75a0dsteps-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .z75a0dstep-item {
        display: flex;
        align-items: center;
        gap: 1.5rem;
        text-align: left;
    }

    .z75a0dstep-item::after {
        display: none;
    }

    .z75a0dstep-number {
        margin: 0;
        flex-shrink: 0;
    }

    .z75a0dstep-content {
        flex: 1;
    }
}

.z75a0dback-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 50px;
    height: 50px;
    background: var(--primary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.5rem;
    box-shadow: 0 4px 15px rgba(0,0,0,0.2);
    transition: all 0.3s ease;
    opacity: 0;
    visibility: hidden;
    z-index: 1000;
}

.z75a0dback-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.z75a0dback-to-top:hover {
    background: var(--primary-dark);
    transform: translateY(-3px);
}

/* 关于欧易部分 */
.z75a0dabout {
    padding: 4rem 0;
    background: #f8f9fa;
}

.z75a0dabout-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-top: 2rem;
}

.z75a0dabout-card {
    background: #fff;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    text-align: center;
    transition: transform 0.3s ease;
}

.z75a0dabout-card:hover {
    transform: translateY(-5px);
}

.z75a0dabout-icon {
    font-size: 2.5rem;
    color: #007bff;
    margin-bottom: 1rem;
}

.z75a0dabout-card h3 {
    font-size: 1.2rem;
    margin-bottom: 1rem;
    color: #333;
}

.z75a0dabout-card p {
    color: #666;
    line-height: 1.6;
}

/* 发展历程部分 */
.z75a0dhistory {
    padding: 4rem 0;
    background: #fff;
}

.z75a0dtimeline {
    position: relative;
    max-width: 800px;
    margin: 3rem auto;
}

.z75a0dtimeline::before {
    content: '';
    position: absolute;
    width: 2px;
    background: linear-gradient(to bottom, #007bff, #00bcd4);
    top: 0;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
}

.z75a0dtimeline-item {
    position: relative;
    margin-bottom: 3rem;
    width: 100%;
}

.z75a0dtimeline-year {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    background: #fff;
    color: #007bff;
    padding: 0.5rem 1.5rem;
    border-radius: 20px;
    font-weight: bold;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.z75a0dtimeline-content {
    width: 45%;
    padding: 2rem;
    background: #fff;
    border-radius: 16px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
    position: relative;
}

.z75a0dtimeline-item:nth-child(odd) .z75a0dtimeline-content {
    margin-left: 55%;
}

.z75a0dtimeline-item:nth-child(even) .z75a0dtimeline-content {
    margin-right: 55%;
}

.z75a0dtimeline-icon {
    font-size: 2rem;
    color: #007bff;
    margin-bottom: 1rem;
}

.z75a0dtimeline-content h3 {
    color: #333;
    margin-bottom: 1rem;
}

.z75a0dtimeline-content p {
    color: #666;
    margin-bottom: 1.5rem;
}

.z75a0dtimeline-achievements {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.z75a0dachievement-tag {
    background: #f0f7ff;
    color: #007bff;
    padding: 0.3rem 0.8rem;
    border-radius: 20px;
    font-size: 0.9rem;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .z75a0dabout-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .z75a0dtimeline::before {
        left: 0;
    }

    .z75a0dtimeline-year {
        left: 0;
        transform: none;
    }

    .z75a0dtimeline-content {
        width: 100%;
        margin-left: 2rem !important;
    }
}

@media (max-width: 576px) {
    .z75a0dabout {
        padding: 3rem 0;
    }

    .z75a0dabout-card {
        padding: 1.5rem;
    }

    .z75a0dabout-icon {
        font-size: 2rem;
    }

    .z75a0dtimeline-content {
        padding: 1rem;
    }
}

/* 注册指南样式 */
.z75a0dguide-steps {
    display: flex;
    flex-direction: column;
    gap: 30px;
    margin-top: 40px;
}

.z75a0dguide-step {
    display: flex;
    gap: 30px;
    padding: 30px;
    background: #fff;
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.08);
    transition: transform 0.3s ease;
}

.z75a0dguide-step:hover {
    transform: translateY(-2px);
}

.z75a0dstep-number {
    font-size: 48px;
    font-weight: bold;
    color: #007bff;
    opacity: 0.2;
    min-width: 80px;
    text-align: center;
}

.z75a0dstep-content {
    flex: 1;
}

.z75a0dstep-content h3 {
    font-size: 24px;
    margin-bottom: 15px;
    color: #333;
}

.z75a0dstep-content p {
    color: #666;
    margin-bottom: 20px;
    line-height: 1.6;
}

.z75a0dstep-features {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.z75a0dfeature-tag {
    padding: 6px 16px;
    background: rgba(0,123,255,0.1);
    color: #007bff;
    border-radius: 20px;
    font-size: 14px;
}

/* 平板适配 (768px - 1024px) */
@media screen and (max-width: 1024px) {
    .z75a0dfeatures-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .z75a0dsecurity-features {
        grid-template-columns: 1fr;
    }

    .z75a0dhero-content {
        gap: 30px;
    }
}

/* 小屏幕移动端适配 (<= 480px) */
@media screen and (max-width: 480px) {
    .z75a0dcontainer {
        padding: 0 15px;
    }

    .z75a0dsection-header {
        margin-bottom: 20px;
    }

    .z75a0dsection-title {
        font-size: 20px;
    }

    .z75a0dsection-subtitle {
        font-size: 14px;
    }

    .z75a0dfeature-card,
    .z75a0ddownload-card,
    .z75a0dsecurity-card {
        padding: 20px;
    }

    .z75a0dstep-item {
        padding: 15px;
    }

    .z75a0dguide-step {
        padding: 15px;
    }

    .z75a0dstep-number {
        font-size: 32px;
    }

    .z75a0dstep-content h3 {
        font-size: 18px;
    }

    .z75a0dstep-content p {
        font-size: 13px;
    }

    .z75a0dfeature-tag {
        padding: 3px 10px;
        font-size: 11px;
    }
}

/* 响应式优化 */
@media screen and (max-width: 1200px) {
    .z75a0dcontainer {
        max-width: 960px;
    }
    
    .z75a0dfeatures-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .z75a0dsecurity-features {
        grid-template-columns: 1fr;
    }
}

@media screen and (max-width: 992px) {
    .z75a0dcontainer {
        max-width: 720px;
    }
    
    .z75a0dhero-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .z75a0ddownload-grid {
        grid-template-columns: 1fr;
    }
    
    .z75a0dsteps-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media screen and (max-width: 768px) {
    .z75a0dcontainer {
        max-width: 540px;
    }
    
    /* 导航栏优化 */
    .z75a0dheader-container {
        padding: 15px 0;
    }
    
    .z75a0dlogo-text h1 {
        font-size: 1.2rem;
    }
    
    .z75a0dlogo-text p {
        font-size: 0.75rem;
    }
    
    .z75a0dmobile-nav-toggle {
        display: block;
    }
    
    .z75a0dmain-nav {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        height: 100vh;
        height: 100dvh;
        background: #fff;
        padding: 60px 20px;
        transition: right 0.3s ease;
        z-index: 10100;
        overflow-y: auto;
        -webkit-overflow-scrolling: touch;
        box-shadow: -5px 0 20px rgba(0,0,0,0.12);
    }
    
    .z75a0dmain-nav.active {
        right: 0;
    }
    
    .z75a0dmain-nav ul {
        flex-direction: column;
        gap: 20px;
    }
    
    /* 主横幅优化 */
    .z75a0dhero-text {
        padding-right: 0;
    }
    
    .z75a0dhero-image img {
        max-width: 80%;
        margin: 0 auto;
    }
    
    /* 特性卡片优化 */
    .z75a0dfeatures-grid {
        grid-template-columns: 1fr;
    }
    
    /* 步骤卡片优化 */
    .z75a0dsteps-grid {
        grid-template-columns: 1fr;
    }
    
    /* 下载按钮优化 */
    .z75a0ddownload-buttons {
        flex-direction: column;
        gap: 15px;
    }
    
    .z75a0ddownload-btn {
        width: 100%;
        padding: 10px 20px;
        font-size: 14px;
    }
    
    /* 底部导航优化 */
    .z75a0dfooter-content {
        flex-direction: column;
        text-align: center;
    }
    
    .z75a0dfooter-links {
        margin-top: 30px;
    }
    
    .z75a0dlink-group {
        margin-bottom: 20px;
    }
}

@media screen and (max-width: 576px) {
    .z75a0dcontainer {
        padding: 0 15px;
    }
    
    .z75a0dsection-header {
        margin-bottom: 20px;
    }
    
    .z75a0dsection-title {
        font-size: 20px;
    }
    
    .z75a0dsection-subtitle {
        font-size: 14px;
    }
    
    .z75a0dfeature-card,
    .z75a0ddownload-card,
    .z75a0dsecurity-card {
        padding: 20px;
    }
    
    .z75a0dstep-item {
        padding: 15px;
    }
}

/* 触摸设备优化 */
@media (hover: none) {
    .z75a0dfeature-card:hover,
    .z75a0ddownload-card:hover,
    .z75a0dsecurity-card:hover {
        transform: none;
    }
    
    .z75a0ddownload-btn:hover {
        transform: none;
        box-shadow: none;
    }
}

/* 图片加载优化 */
.z75a0dhero-image img {
    width: 100%;
    height: auto;
    object-fit: cover;
}

/* 安全区域适配 */
@supports (padding: max(0px)) {
    .z75a0dcontainer {
        padding-left: max(20px, env(safe-area-inset-left));
        padding-right: max(20px, env(safe-area-inset-right));
    }
    
    .z75a0dmain-nav {
        padding-left: max(20px, env(safe-area-inset-left));
        padding-right: max(20px, env(safe-area-inset-right));
    }
}

/* 性能优化 */
.z75a0dfeature-card,
.z75a0ddownload-card,
.z75a0dsecurity-card,
.z75a0dguide-step {
    will-change: transform;
    backface-visibility: hidden;
}

/* 滚动优化 */
html {
    scroll-behavior: smooth;
}

/* 加载优化 */
img {
    loading: lazy;
}

/* 动画优化 */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

/* 导航栏动画 */
@keyframes slideDown {
    from {
        transform: translateY(-100%);
    }
    to {
        transform: translateY(0);
    }
}

/* 友情链接和相关站点样式 */
.z75a0dfooter-friends {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
    margin: 2rem 0;
    padding: 2rem 0;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.z75a0dfriends-section h3 {
    font-size: 1.2rem;
    margin-bottom: 1.5rem;
    color: white;
    position: relative;
    padding-bottom: 0.5rem;
    font-weight: 600;
}

.z75a0dfriends-section h3::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 40px;
    height: 2px;
    background: var(--primary-color);
    border-radius: 2px;
}

.z75a0dfriends-section ul {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    list-style: none;
    padding: 0;
    margin: 0;
}

.z75a0dfriends-section ul li {
    margin: 0;
}

.z75a0dfriends-section ul a {
    color: rgba(255, 255, 255, 0.7);
    transition: all 0.3s ease;
    font-size: 0.95rem;
    display: inline-block;
    padding: 0.3rem 0.8rem;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 4px;
}

.z75a0dfriends-section ul a:hover {
    color: white;
    background: rgba(255, 255, 255, 0.15);
    transform: translateY(-2px);
}

@media (max-width: 768px) {
    .z75a0dfooter-friends {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .z75a0dfriends-section ul {
        gap: 0.8rem;
    }
    
    .z75a0dfriends-section ul a {
        font-size: 0.9rem;
        padding: 0.25rem 0.6rem;
    }
}

/* ========== 内页 / 列表 / 内容 / 首页文章区 ========== */
body.nav-open {
    overflow: hidden;
}

body.z75a0dinner {
    padding-top: 0;
}

.z75a0dmain-nav ul.z75a0dnav {
    flex-wrap: wrap;
    gap: 12px 18px;
    align-items: center;
    justify-content: flex-end;
}

.z75a0dnav-item {
    position: relative;
}

.z75a0dnav-item.z75a0dthis > a,
.z75a0dnav-item.z75a0dthis a:first-child {
    color: var(--primary-color);
}

.z75a0dnav-child {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 200px;
    background: #fff;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
    border-radius: 8px;
    padding: 8px 0;
    z-index: 1200;
    margin: 0;
}

.z75a0dnav-item:hover .z75a0dnav-child,
.z75a0dnav-item:focus-within .z75a0dnav-child {
    display: block;
}

.z75a0dnav-child-dd,
.z75a0dnav-child dd {
    margin: 0;
    padding: 0;
}

.z75a0dnav-child-dd a,
.z75a0dnav-child dd a {
    display: block;
    padding: 8px 16px;
    font-size: 14px;
    color: #333;
}

.z75a0dnav-child-dd a:hover,
.z75a0dnav-child dd a:hover {
    background: #f5f8ff;
    color: var(--primary-color);
}

.z75a0dnav-stacked {
    flex-direction: column;
    align-items: stretch !important;
    gap: 0 !important;
}

.z75a0dnav-stacked .z75a0dnav-item > a {
    display: block;
    padding: 8px 0;
}

.z75a0dnav-stacked .z75a0dnav-child {
    position: static;
    display: block;
    box-shadow: none;
    padding: 0 0 8px 12px;
    border-left: 2px solid var(--border-color);
    margin-left: 4px;
}

/* 内页顶条 */
.z75a0dinner-hero {
    padding: 88px 0 28px;
    background: linear-gradient(135deg, #f8f9fa, #ffffff);
    border-bottom: 1px solid var(--border-color);
}

.z75a0dbreadcrumb {
    font-size: 14px;
    color: var(--text-light);
    margin-bottom: 12px;
}

.z75a0dbreadcrumb a {
    color: var(--text-light);
}

.z75a0dbreadcrumb a:hover {
    color: var(--primary-color);
}

.z75a0dbreadcrumb-sep {
    margin: 0 6px;
    opacity: 0.6;
}

.z75a0dbreadcrumb-current {
    color: var(--text-color);
}

.z75a0dinner-title {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-color);
    line-height: 1.3;
    margin-bottom: 10px;
}

.z75a0dinner-meta,
.z75a0dinner-desc {
    font-size: 14px;
    color: var(--text-light);
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
}

.z75a0dinner-meta span {
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

/* 主侧栏布局 */
.z75a0dlayout {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 300px;
    gap: 32px;
    padding: 32px 20px 48px;
    max-width: 1200px;
    margin: 0 auto;
    align-items: start;
}

.z75a0dmain-column {
    min-width: 0;
}

/* 内容页 */
.z75a0darticle-hero-thumb {
    border-radius: var(--border-radius);
    overflow: hidden;
    margin-bottom: 20px;
    background: #f0f3f8;
    text-align: center;
}

.z75a0darticle-hero-thumb img {
    width: 100%;
    max-height: 420px;
    object-fit: cover;
    display: block;
}

.z75a0darticle-toolbar {
    margin-bottom: 16px;
}

.z75a0darticle-toolbar--foot {
    margin-top: 28px;
    margin-bottom: 0;
    padding-top: 24px;
    border-top: 1px solid var(--border-color);
}

/* 上一篇 / 下一篇：分两条 {jz:prenext}，避免 get='' 整段重复输出 */
.z75a0darticle-prenext {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: flex-start;
    gap: 12px 20px;
    font-size: 14px;
    width: 100%;
}

.z75a0darticle-prenext-item {
    flex: 1 1 42%;
    min-width: 0;
}

.z75a0darticle-prenext-item--next {
    text-align: right;
}

.z75a0darticle-prenext a {
    color: var(--primary-color);
}

.z75a0darticle-prenext a:hover {
    text-decoration: underline;
}

.z75a0darticle-body {
    font-size: 16px;
    line-height: 1.75;
    color: var(--text-color);
}

.z75a0dtypography img {
    max-width: 100%;
    height: auto;
    border-radius: 6px;
}

.z75a0darticle-gallery {
    margin-top: 24px;
}

.z75a0darticle-figure {
    margin: 16px 0;
}

.z75a0darticle-figure figcaption {
    font-size: 13px;
    color: var(--text-light);
    margin-top: 6px;
}

.z75a0ddiyfield {
    margin-top: 20px;
    padding: 16px;
    background: #f8f9fa;
    border-radius: 8px;
    font-size: 14px;
}

.z75a0dmeta-tags-wrap {
    margin-top: 24px;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 10px;
}

.z75a0dmeta-tags-label {
    font-size: 14px;
    color: var(--text-light);
}

.z75a0dmeta-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    list-style: none;
    margin: 0;
    padding: 0;
}

.z75a0dtagitem a {
    display: inline-block;
    padding: 4px 10px;
    background: #eef4ff;
    border-radius: 20px;
    font-size: 13px;
    color: var(--primary-dark);
}

.z75a0dtags-php {
    font-size: 13px;
    flex: 1 1 100%;
}

/* 通用块 */
.z75a0dblock {
    margin-top: 32px;
    padding-top: 24px;
    border-top: 1px solid var(--border-color);
}

.z75a0dblock-title {
    font-size: 1.15rem;
    margin-bottom: 16px;
    color: var(--text-color);
}

.z75a0dcard-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.z75a0dcard-list-horiz .z75a0dcard-item {
    display: grid;
    grid-template-columns: 120px 1fr;
    gap: 14px;
    align-items: start;
    background: #fff;
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 12px;
}

.z75a0dcard-thumb img {
    width: 100%;
    height: 80px;
    object-fit: cover;
    border-radius: 6px;
    display: block;
}

.z75a0dcard-title {
    font-weight: 600;
    color: var(--text-color);
    font-size: 15px;
    display: block;
    margin-bottom: 6px;
}

.z75a0dcard-desc {
    font-size: 13px;
    color: var(--text-light);
    margin: 0;
    line-height: 1.5;
}

/* 侧栏 */
.z75a0dsidebar {
    position: sticky;
    top: 80px;
}

.z75a0dsidebar-block {
    background: #fff;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 16px;
    margin-bottom: 18px;
}

.z75a0dsidebar-title {
    font-size: 16px;
    margin: 0 0 12px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--primary-color);
    color: var(--text-color);
}

.z75a0dtab_more {
    font-size: 15px;
    color: var(--primary-color);
}

.z75a0dsidebar-list {
    list-style: none;
    margin: 0;
    padding: 0;
}

.z75a0dsidebar-list li + li {
    margin-top: 10px;
}

.z75a0dsidebar-row {
    display: grid;
    grid-template-columns: 72px 1fr;
    gap: 10px;
    align-items: center;
}

.z75a0dsidebar-thumb img {
    width: 72px;
    height: 48px;
    object-fit: cover;
    border-radius: 6px;
    display: block;
}

.z75a0dsidebar-row-title {
    font-size: 13px;
    line-height: 1.4;
    color: var(--text-color);
}

.z75a0dsidebar-row:hover .z75a0dsidebar-row-title {
    color: var(--primary-color);
}

.z75a0dsidebar-list-simple a {
    font-size: 13px;
    color: var(--text-color);
    display: block;
    padding: 4px 0;
    border-bottom: 1px dashed var(--border-color);
}

.z75a0dsidebar-list-simple li:last-child a {
    border-bottom: 0;
}

/* 列表页 */
.z75a0dlist-toolbar {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 12px;
    margin-bottom: 20px;
    padding: 12px 16px;
    background: #f8f9fa;
    border-radius: 10px;
}

.z75a0dlist-toolbar-label {
    font-size: 13px;
    color: var(--text-light);
    flex-shrink: 0;
}

.z75a0dlist-toolbar-links {
    display: flex;
    flex-wrap: wrap;
    gap: 10px 14px;
}

.z75a0dlist-toolbar-links a {
    font-size: 14px;
    color: var(--primary-color);
}

.z75a0darticle-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 18px;
}

.z75a0darticle-list-item {
    display: grid;
    grid-template-columns: 200px minmax(0, 1fr);
    gap: 18px;
    padding: 16px;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    background: #fff;
    align-items: start;
}

.z75a0darticle-list-thumb img {
    width: 100%;
    height: 120px;
    object-fit: cover;
    border-radius: 8px;
    display: block;
}

.z75a0darticle-list-title {
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--text-color);
    display: block;
    margin-bottom: 8px;
}

.z75a0darticle-list-intro {
    font-size: 14px;
    color: var(--text-light);
    margin: 0 0 10px;
    line-height: 1.55;
}

.z75a0darticle-list-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 12px 16px;
    font-size: 13px;
    color: var(--text-lighter);
}

.z75a0darticle-list-meta span {
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

/* 分页：左中右三栏 */
.z75a0dpagebar {
    margin-top: 28px;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
}

.z75a0dpages-row {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}

.z75a0dpages-cell {
    flex: 0 1 auto;
    min-width: 0;
}

.z75a0dpages-middle {
    flex: 1 1 auto;
    display: flex;
    justify-content: center;
}

.z75a0dpages-prev {
    flex: 0 0 auto;
}

.z75a0dpages-next {
    flex: 0 0 auto;
}

.z75a0dpages-row .pagelist,
.z75a0dpages-row ul {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 6px 10px;
    list-style: none;
    margin: 0;
    padding: 0;
    justify-content: center;
}

.z75a0dpages-prev .pagelist,
.z75a0dpages-prev ul {
    justify-content: flex-start;
}

.z75a0dpages-next .pagelist,
.z75a0dpages-next ul {
    justify-content: flex-end;
}

.z75a0dpages-row a {
    display: inline-block;
    padding: 6px 12px;
    border-radius: 6px;
    border: 1px solid var(--border-color);
    font-size: 14px;
    color: var(--text-color);
    background: #fff;
}

.z75a0dpages-row a:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

/* 列表页分页：整行居中，保证上一页/下一页与各页码同排可见（勿对 pageprev/pagenext 用 margin:auto，易把中间项挤出视区） */
.z75a0dpagelist-bar {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    gap: 8px 10px;
    width: 100%;
}

.z75a0dpagelist-bar li {
    margin: 0;
    list-style: none;
}

.z75a0dpagelist-bar a,
.z75a0dpagelist-bar span {
    display: inline-block;
    padding: 6px 12px;
    border-radius: 6px;
    border: 1px solid var(--border-color);
    font-size: 14px;
    color: var(--text-color);
    background: #fff;
    line-height: 1.35;
    min-height: 36px;
    box-sizing: border-box;
}

.z75a0dpagelist-bar a:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.z75a0dpagelist-bar li.thisclass a,
.z75a0dpagelist-bar li.thisclass span {
    border-color: var(--primary-color);
    color: var(--primary-color);
    font-weight: 600;
}

/* 列表页 channel 嵌套示例 */
.z75a0dchannel-loop {
    margin-top: 32px;
}

.z75a0dchannel-loop-card {
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 16px;
    margin-bottom: 16px;
    background: #fafbfc;
}

.z75a0dchannel-loop-head {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
}

.z75a0dchannel-loop-head h3 {
    margin: 0;
    font-size: 1.05rem;
}

.z75a0dcity-list {
    display: flex;
    flex-wrap: wrap;
    gap: 8px 12px;
}

.z75a0dfooter-mail {
    margin-top: 8px;
    font-size: 12px;
    opacity: 0.85;
}

/* 首页文章区：5 列 × 2 行 */
.z75a0dhome-articles {
    padding: var(--section-padding) 0;
    background: linear-gradient(to bottom, #ffffff, #f8f9fa);
}

.z75a0dhome-articles-grid {
    display: grid;
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 18px;
    max-width: 1200px;
    margin: 0 auto;
}

.z75a0dhome-article-card {
    background: #fff;
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid var(--border-color);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.06);
    display: flex;
    flex-direction: column;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.z75a0dhome-article-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
}

.z75a0dhome-article-thumb {
    display: block;
    aspect-ratio: 16 / 10;
    overflow: hidden;
    background: #eef1f6;
}

.z75a0dhome-article-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.z75a0dhome-article-text {
    padding: 12px 12px 14px;
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.z75a0dhome-article-title {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-color);
    line-height: 1.35;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.z75a0dhome-article-desc {
    font-size: 12px;
    color: var(--text-light);
    margin: 0;
    line-height: 1.45;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    flex: 1;
}

.z75a0dhome-article-meta {
    font-size: 11px;
    color: var(--text-lighter);
    display: flex;
    align-items: center;
    gap: 4px;
}

@media (max-width: 1100px) {
    .z75a0dhome-articles-grid {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }
}

@media (max-width: 768px) {
    .z75a0dlayout {
        grid-template-columns: 1fr;
        padding: 24px 16px 40px;
    }

    .z75a0dsidebar {
        position: static;
        order: 2;
    }

    .z75a0dmain-column {
        order: 1;
    }

    .z75a0dinner-title {
        font-size: 1.35rem;
    }

    .z75a0darticle-list-item {
        grid-template-columns: 1fr;
    }

    .z75a0darticle-list-thumb img {
        height: 180px;
    }

    .z75a0dpages-row {
        flex-direction: column;
        align-items: stretch;
    }

    .z75a0dpages-prev .pagelist,
    .z75a0dpages-prev ul,
    .z75a0dpages-next .pagelist,
    .z75a0dpages-next ul,
    .z75a0dpages-middle .pagelist,
    .z75a0dpages-middle ul {
        justify-content: center;
    }

    .z75a0dhome-articles-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 14px;
    }

    .z75a0dcard-list-horiz .z75a0dcard-item {
        grid-template-columns: 100px 1fr;
    }

    .z75a0dnav-child {
        position: static;
        display: block;
        box-shadow: none;
        border-radius: 0;
        padding-left: 8px;
    }

    .z75a0dmain-nav ul.z75a0dnav {
        justify-content: flex-start;
    }
}

@media (max-width: 480px) {
    .z75a0dhome-articles-grid {
        grid-template-columns: 1fr;
    }

    .z75a0darticle-prenext {
        flex-direction: column;
    }

    .z75a0darticle-prenext-item--next {
        text-align: left;
    }
}

/* ========== 2026 改版：导航遮罩、各板块差异化、内页关键词条 ========== */
.z75a0dnav-backdrop {
    display: none;
    position: fixed;
    inset: 0;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    width: 100%;
    height: 100%;
    background: rgba(15, 23, 42, 0.5);
    z-index: 10090;
    opacity: 0;
    transition: opacity 0.28s ease;
    pointer-events: none;
}

.z75a0dnav-backdrop.is-open {
    display: block;
    opacity: 1;
    pointer-events: auto;
}

@media (min-width: 769px) {
    .z75a0dnav-backdrop {
        display: none !important;
        pointer-events: none !important;
    }
}

body.nav-open {
    overflow: hidden;
    touch-action: none;
}

.z75a0dinner-kw-strip {
    margin-top: 14px;
    padding: 12px 14px;
    font-size: 13px;
    line-height: 1.65;
    color: var(--text-light);
    background: rgba(26, 115, 232, 0.06);
    border-radius: 10px;
    border-left: 4px solid var(--primary-color);
}

.z75a0dfooter-kw {
    margin-top: 10px;
    font-size: 13px;
    line-height: 1.6;
    color: rgba(255, 255, 255, 0.72);
    max-width: 520px;
}

/* Hero：斜向装饰 + 双栏 */
.z75a0dhero--diagonal {
    padding: 96px 0 72px;
}

.z75a0dhero--diagonal .z75a0dhero-bg {
    position: absolute;
    inset: 0;
    background: linear-gradient(115deg, transparent 40%, rgba(255,255,255,0.08) 40%, rgba(255,255,255,0.08) 42%, transparent 42%),
                radial-gradient(ellipse 80% 50% at 100% 0%, rgba(255,255,255,0.15), transparent 55%);
    pointer-events: none;
}

.z75a0dhero--diagonal .z75a0dhero-content {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: 1.08fr 0.92fr;
    gap: 36px;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.z75a0dhero-lead {
    margin-top: 16px;
    font-size: 15px;
    line-height: 1.75;
    opacity: 0.94;
    max-width: 560px;
}

.z75a0dhero-lead strong {
    font-weight: 600;
    color: #fff;
}

.z75a0dhero-excerpt {
    margin-top: 14px;
    font-size: 14px;
    line-height: 1.78;
    opacity: 0.9;
    max-width: 560px;
    color: rgba(255, 255, 255, 0.92);
}

.z75a0dmx-head .z75a0dmx-lead + .z75a0dmx-lead {
    margin-top: 0.75rem;
}

.z75a0dmx-cell p + p {
    margin-top: 0.55rem;
}

.z75a0ddownload-intro {
    font-size: 1.05rem;
    color: var(--text-light);
    max-width: 720px;
    margin: 1rem auto 0;
    line-height: 1.7;
}

.z75a0dsteps-lead {
    text-align: center;
    font-size: 0.98rem;
    color: var(--text-light);
    max-width: 720px;
    margin: 0 auto 1.5rem;
    line-height: 1.65;
    padding: 0 12px;
}

.z75a0dtr-head .z75a0dtr-desc + .z75a0dtr-desc {
    margin-top: 0.65rem;
}

.z75a0dtr-step p + p {
    margin-top: 0.55rem;
}

.z75a0dsq-head .z75a0dsq-lead + .z75a0dsq-lead {
    margin-top: 0.65rem;
}

.z75a0dsq-cell p + p {
    margin-top: 0.45rem;
}

.z75a0dmag-head-text .z75a0dmag-desc + .z75a0dmag-desc {
    margin-top: 0.65rem;
}

/* ========== 三大板块：对称框架（宫格 / 三门廊 / 四象限） ========== */

/* ① 为什么选择欧易交易所 — 外框 + 2×2 等分宫格 */
.z75a0dfeatures--matrix {
    padding: 4.5rem 0;
    background: linear-gradient(180deg, #f8fafc 0%, #eef2f7 100%);
}

.z75a0dmx-frame {
    max-width: 1040px;
    margin: 0 auto;
    padding: clamp(12px, 2vw, 28px);
    border: 2px solid rgba(26, 115, 232, 0.35);
    border-radius: 4px;
    background: #fff;
    box-shadow: 0 0 0 6px rgba(26, 115, 232, 0.06), 0 20px 50px rgba(15, 23, 42, 0.06);
}

.z75a0dmx-head {
    text-align: center;
    padding: clamp(1.25rem, 3vw, 2rem) clamp(1rem, 3vw, 2.5rem) 1.75rem;
    border-bottom: 1px solid rgba(26, 115, 232, 0.2);
}

.z75a0dmx-kicker {
    display: inline-block;
    padding: 0.3rem 1rem;
    border: 1px solid rgba(26, 115, 232, 0.4);
    border-radius: 2px;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.14em;
    color: var(--primary-dark);
    text-transform: uppercase;
}

.z75a0dmx-title {
    margin: 1rem 0 0.65rem;
    font-size: clamp(1.45rem, 3.5vw, 2rem);
    font-weight: 700;
    color: var(--text-color);
    line-height: 1.25;
}

.z75a0dmx-lead {
    margin: 0 auto;
    max-width: 720px;
    font-size: clamp(0.9rem, 2vw, 1.05rem);
    color: var(--text-light);
    line-height: 1.65;
}

.z75a0dmx-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    grid-template-rows: 1fr 1fr;
    margin: 0;
    padding: 0;
    border-top: 1px solid rgba(26, 115, 232, 0.2);
}

.z75a0dmx-cell {
    margin: 0;
    padding: clamp(1.25rem, 3vw, 2rem) clamp(1rem, 2.5vw, 1.75rem);
    text-align: center;
    border-right: 1px solid rgba(26, 115, 232, 0.2);
    border-bottom: 1px solid rgba(26, 115, 232, 0.2);
    background: #fff;
}

.z75a0dmx-cell:nth-child(2n) {
    border-right: none;
}

.z75a0dmx-cell:nth-child(n + 3) {
    border-bottom: none;
}

.z75a0dmx-ico {
    display: inline-flex;
    width: 56px;
    height: 56px;
    align-items: center;
    justify-content: center;
    margin-bottom: 0.85rem;
    border: 2px solid rgba(26, 115, 232, 0.35);
    border-radius: 4px;
    color: var(--primary-color);
    font-size: 1.45rem;
}

.z75a0dmx-cell h3 {
    margin: 0 0 0.5rem;
    font-size: 1.1rem;
    color: var(--text-color);
}

.z75a0dmx-cell p {
    margin: 0;
    font-size: 0.92rem;
    color: var(--text-light);
    line-height: 1.6;
}

/* ② 欧易注册与账户准备 — 顶栏 + 三等分门廊 */
.z75a0dguide--triad {
    padding: 4.5rem 0;
    background: #fff;
}

.z75a0dtr-frame {
    max-width: 1100px;
    margin: 0 auto;
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid var(--border-color);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.06);
}

.z75a0dtr-head {
    text-align: center;
    padding: clamp(1.5rem, 3vw, 2.25rem) 1.5rem;
    background: linear-gradient(180deg, #f1f6ff 0%, #fff 100%);
    border-bottom: 3px double rgba(26, 115, 232, 0.25);
}

.z75a0dtr-kicker {
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 0.18em;
    color: var(--primary-color);
    text-transform: uppercase;
}

.z75a0dtr-title {
    margin: 0.6rem 0 0.5rem;
    font-size: clamp(1.4rem, 3.2vw, 1.85rem);
    color: var(--text-color);
}

.z75a0dtr-desc {
    margin: 0 auto;
    max-width: 640px;
    font-size: clamp(0.9rem, 2vw, 1.02rem);
    color: var(--text-light);
    line-height: 1.65;
}

.z75a0dtr-row {
    display: grid;
    grid-template-columns: 1fr 1px 1fr 1px 1fr;
    align-items: stretch;
    min-height: 0;
}

.z75a0dtr-step {
    padding: clamp(1.35rem, 3vw, 2rem) clamp(0.85rem, 2vw, 1.5rem);
    text-align: center;
    background: #fff;
}

.z75a0dtr-vrule {
    width: 1px;
    background: linear-gradient(180deg, transparent, rgba(26, 115, 232, 0.25) 15%, rgba(26, 115, 232, 0.25) 85%, transparent);
}

.z75a0dtr-badge {
    display: inline-flex;
    width: 44px;
    height: 44px;
    align-items: center;
    justify-content: center;
    margin-bottom: 0.75rem;
    border-radius: 50%;
    background: var(--primary-color);
    color: #fff;
    font-size: 0.8rem;
    font-weight: 800;
    letter-spacing: 0.02em;
}

.z75a0dtr-step h3 {
    margin: 0 0 0.45rem;
    font-size: 1.08rem;
    color: var(--text-color);
}

.z75a0dtr-step p {
    margin: 0 0 0.85rem;
    font-size: 0.9rem;
    color: var(--text-light);
    line-height: 1.55;
}

.z75a0dtr-tags {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 6px 8px;
}

.z75a0dtr-tags span {
    font-size: 0.78rem;
    padding: 4px 10px;
    border: 1px solid rgba(26, 115, 232, 0.25);
    border-radius: 999px;
    color: var(--primary-dark);
    background: rgba(26, 115, 232, 0.06);
}

/* ③ 资产与账户防护 — 外框 + 2×2 四象限 */
.z75a0dsecurity--quadrant {
    padding: 4.5rem 0;
    background: linear-gradient(180deg, #eef2f7 0%, #f8fafc 100%);
}

.z75a0dsq-frame {
    max-width: 1040px;
    margin: 0 auto;
    padding: clamp(14px, 2.5vw, 24px);
    background: #fff;
    border-radius: 16px;
    border: 1px solid rgba(15, 23, 42, 0.08);
    box-shadow: inset 0 0 0 1px rgba(26, 115, 232, 0.12), 0 24px 60px rgba(15, 23, 42, 0.08);
}

.z75a0dsq-head {
    text-align: center;
    padding: 0.5rem 1rem 1.75rem;
    margin-bottom: 0.25rem;
}

.z75a0dsq-kicker {
    display: inline-block;
    padding: 0.2rem 0.65rem;
    border-radius: 999px;
    background: #1e293b;
    color: #f8fafc;
    font-size: 0.72rem;
    font-weight: 600;
    letter-spacing: 0.12em;
}

.z75a0dsq-title {
    margin: 0.85rem 0 0.5rem;
    font-size: clamp(1.4rem, 3.2vw, 1.85rem);
    color: var(--text-color);
}

.z75a0dsq-lead {
    margin: 0 auto;
    max-width: 700px;
    font-size: clamp(0.9rem, 2vw, 1.02rem);
    color: var(--text-light);
    line-height: 1.65;
}

.z75a0dsq-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    grid-template-rows: auto auto;
    gap: 0;
    margin: 0;
    padding: 0;
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid rgba(26, 115, 232, 0.22);
}

.z75a0dsq-cell {
    padding: clamp(1.25rem, 2.8vw, 1.85rem);
    text-align: center;
    border-right: 1px solid rgba(26, 115, 232, 0.18);
    border-bottom: 1px solid rgba(26, 115, 232, 0.18);
    background: linear-gradient(180deg, #fbfdff 0%, #fff 100%);
}

.z75a0dsq-cell:nth-child(2n) {
    border-right: none;
}

.z75a0dsq-cell:nth-child(n + 3) {
    border-bottom: none;
}

.z75a0dsq-ico {
    display: inline-flex;
    width: 60px;
    height: 60px;
    align-items: center;
    justify-content: center;
    margin-bottom: 0.75rem;
    border-radius: 50%;
    background: linear-gradient(145deg, var(--primary-color), var(--primary-light));
    color: #fff;
    font-size: 1.45rem;
    box-shadow: 0 6px 18px rgba(26, 115, 232, 0.35);
}

.z75a0dsq-cell h3 {
    margin: 0 0 0.45rem;
    font-size: 1.08rem;
    color: var(--text-color);
}

.z75a0dsq-cell p {
    margin: 0 0 0.65rem;
    font-size: 0.88rem;
    color: var(--text-light);
    line-height: 1.55;
}

.z75a0dsq-mini {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 6px 10px;
    list-style: none;
    margin: 0;
    padding: 0;
}

.z75a0dsq-mini li {
    font-size: 0.78rem;
    padding: 3px 9px;
    border-radius: 4px;
    background: rgba(26, 115, 232, 0.08);
    color: var(--text-color);
}

/* 下载区：强调条 */
.z75a0ddownload-section--bands .z75a0ddownload-container {
    border-left: 6px solid var(--primary-color);
    border-radius: 20px 24px 24px 20px;
}

/* 关于：左文右卡 */
.z75a0dabout--split {
    padding: 4rem 0;
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
    color: #e8eaef;
}

.z75a0dabout-split {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 36px;
    align-items: start;
}

.z75a0dabout-kicker {
    font-size: 0.75rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.55);
}

.z75a0dabout-title {
    font-size: 1.75rem;
    margin: 0.75rem 0 1rem;
    color: #fff;
}

.z75a0dabout-narrative p {
    line-height: 1.75;
    color: rgba(255, 255, 255, 0.82);
    font-size: 0.98rem;
    margin: 0 0 1rem;
}

.z75a0dabout-note {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.65);
}

.z75a0dabout-aside {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.z75a0dabout-chip {
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 12px;
    padding: 14px 16px;
}

.z75a0dabout-chip strong {
    display: block;
    color: #fff;
    margin-bottom: 4px;
    font-size: 1rem;
}

.z75a0dabout-chip span {
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.7);
}

/* 资讯：杂志头 */
.z75a0dhome-articles--magazine {
    padding: 4rem 0;
    background: linear-gradient(180deg, #fafbfc 0%, #fff 40%);
}

.z75a0dmag-head {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 24px;
    align-items: end;
    margin-bottom: 2rem;
    padding-bottom: 1.25rem;
    border-bottom: 1px solid var(--border-color);
}

.z75a0dmag-kicker {
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--primary-color);
    letter-spacing: 0.08em;
}

.z75a0dmag-title {
    font-size: 2rem;
    margin: 0.35rem 0 0;
    color: var(--text-color);
}

.z75a0dmag-desc {
    margin: 0.75rem 0 0;
    max-width: 560px;
    color: var(--text-light);
    line-height: 1.65;
    font-size: 0.98rem;
}

.z75a0dmag-rule {
    width: 120px;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), transparent);
    border-radius: 2px;
    margin-bottom: 6px;
}

@media (max-width: 992px) {
    .z75a0dhero--diagonal .z75a0dhero-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .z75a0dhero-lead {
        margin-left: auto;
        margin-right: auto;
    }

    .z75a0dhero-excerpt {
        margin-left: auto;
        margin-right: auto;
    }

    .z75a0dmx-grid {
        grid-template-columns: 1fr;
        grid-template-rows: auto;
    }

    .z75a0dmx-cell {
        border-right: none !important;
        border-bottom: 1px solid rgba(26, 115, 232, 0.2);
    }

    .z75a0dmx-cell:last-child {
        border-bottom: none;
    }

    .z75a0dsq-grid {
        grid-template-columns: 1fr;
    }

    .z75a0dsq-cell {
        border-right: none !important;
        border-bottom: 1px solid rgba(26, 115, 232, 0.18);
    }

    .z75a0dsq-cell:last-child {
        border-bottom: none;
    }

    .z75a0dabout-split {
        grid-template-columns: 1fr;
    }

    .z75a0dmag-head {
        grid-template-columns: 1fr;
    }

    .z75a0dmag-rule {
        width: 100%;
        max-width: 200px;
    }
}

@media (max-width: 768px) {
    .z75a0dtr-row {
        grid-template-columns: 1fr;
    }

    .z75a0dtr-vrule {
        display: none;
    }

    .z75a0dtr-step {
        border-bottom: 1px solid var(--border-color);
    }

    .z75a0dtr-step:last-child {
        border-bottom: none;
    }
}