/* 基础样式 */
body {
    margin: 0;
    padding: 0;
    font-family: 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', Arial, sans-serif;
    background: #f7f9fa;
    color: #222;
    overflow-x: hidden;
}
.zac40dcontainer {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 16px;
}
.zac40dsite-header {
    background: #fff;
    border-bottom: 1px solid #e5e5e5;
    padding: 10px 0 4px 0;
}
.zac40dlogo h1 {
    margin: 0 0 0 0;
    font-size: 1.5rem;
    line-height: 1.1;
    color: #1a73e8;
}
.zac40dlogo p {
    margin: 4px 0 0 0;
    color: #888;
    font-size: 1rem;
}
.main-nav {
    margin-top: 2px;
}
.main-nav ul {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    gap: 28px;
    background: #fff;
    border-radius: 32px;
    box-shadow: 0 2px 8px rgba(16,24,40,0.06);
    padding: 8px 24px;
    align-items: center;
}
.main-nav li {
    position: relative;
}
.main-nav a {
    text-decoration: none;
    color: #1a73e8;
    font-weight: 600;
    font-size: 1.08rem;
    padding: 8px 16px;
    border-radius: 20px;
    transition: background 0.2s, color 0.2s;
    display: block;
}
.main-nav a:hover, .main-nav a.active {
    background: #1a73e8;
    color: #fff;
}
.zac40dhero {
    background: linear-gradient(135deg, #101828 0%, #1a3a6b 55%, #0d2137 100%);
    color: #fff;
    padding: 48px 0 32px 0;
    display: flex;
    align-items: center;
    justify-content: center;
}
.zac40dhero .zac40dcontainer {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
}
.zac40dhero-content {
    flex: 1 1 380px;
    min-width: 0;
    max-width: 100%;
}
.zac40dhero-content h2,
.zac40dhero-content p {
    color: #fff;
    text-shadow: 0 2px 8px rgba(0,0,0,0.18);
}
.zac40dhero-content h2 {
    font-size: 2.2rem;
    margin-bottom: 16px;
}
.zac40dhero-content p {
    font-size: 1.1rem;
    margin-bottom: 24px;
}
.zac40ddownload-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}
.zac40dbtn {
    display: inline-block;
    background: #fff;
    color: #1a73e8;
    padding: 12px 22px;
    border-radius: 24px;
    font-size: 0.95rem;
    font-weight: 600;
    text-decoration: none;
    box-shadow: 0 2px 8px rgba(30, 144, 255, 0.08);
    transition: background 0.2s, color 0.2s;
    white-space: nowrap;
    box-sizing: border-box;
}
@media (max-width: 600px) {
    .zac40dbtn {
        white-space: normal;
        width: 100%;
        max-width: 280px;
        text-align: center;
    }
}
.zac40dbtn:hover {
    background: #e3f2fd;
    color: #0056b3;
}
.zac40dhero-image {
    flex: 1 1 280px;
    min-width: 0;
    max-width: 100%;
    text-align: right;
}
.zac40dhero-image img {
    max-width: 480px;
    width: 100%;
    border-radius: 16px;
    box-shadow: 0 4px 24px rgba(0,0,0,0.18);
    background: transparent;
}
.zac40dfeatures, .zac40dadvantages, .zac40ddownload-steps, .zac40dqualification, .zac40dfaq {
    padding-top: 28px;
    padding-bottom: 18px;
}
.zac40dabout {
    padding-top: 28px;
    padding-bottom: 18px;
}
.zac40dfeatures h3 {
    text-align: center;
    font-size: 1.8rem;
    margin-bottom: 32px;
    color: #1a73e8;
}
.zac40dfeatures-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-top: 32px;
}
.zac40dfeature-card {
    background: #fff;
    border-radius: 16px;
    box-shadow: 0 4px 18px rgba(16,24,40,0.13);
    border: 2px solid #e3eaf5;
    padding: 26px 16px 18px 16px;
    display: flex;
    flex-direction: column;
    align-items: center;
    transition: transform 0.18s, box-shadow 0.18s, border-color 0.18s;
    min-height: 180px;
    position: relative;
}
.zac40dfeature-card:hover {
    transform: translateY(-6px) scale(1.04);
    box-shadow: 0 10px 32px rgba(26,115,232,0.18);
    border-color: #1a73e8;
}
.zac40dfeature-card h4 {
    color: #1a73e8;
    margin-bottom: 10px;
}
.zac40dabout h3 {
    color: #1a73e8;
    font-size: 1.6rem;
    margin-bottom: 18px;
}
.zac40dfaq {
    background: #fff;
    padding: 48px 0 32px 0;
}
.zac40dfaq h3 {
    color: #1a73e8;
    text-align: center;
    font-size: 1.5rem;
    margin-bottom: 18px;
}
.zac40dfaq-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-top: 32px;
}
.zac40dfaq-card {
    background: #fff;
    border-radius: 16px;
    box-shadow: 0 4px 18px rgba(16,24,40,0.13);
    border: 2px solid #e3eaf5;
    padding: 22px 16px 16px 16px;
    display: flex;
    flex-direction: column;
    min-height: 140px;
    transition: transform 0.18s, box-shadow 0.18s, border-color 0.18s;
}
.zac40dfaq-card:hover {
    transform: translateY(-6px) scale(1.04);
    box-shadow: 0 10px 32px rgba(26,115,232,0.18);
    border-color: #1a73e8;
}
.zac40dfaq-q {
    color: #1a73e8;
    font-weight: bold;
    margin-bottom: 10px;
    font-size: 1.08rem;
}
.zac40dfaq-a {
    color: #444;
    font-size: 0.98rem;
    line-height: 1.7;
}
.zac40dsite-footer {
    background: #1a73e8;
    color: #fff;
    text-align: center;
    padding: 18px 0;
    font-size: 1rem;
    margin-top: 32px;
}
/* 响应式设计 */
@media (max-width: 900px) {
    .zac40dhero .zac40dcontainer, .zac40dfeatures-grid, .zac40dfaq-grid {
        flex-direction: column;
        align-items: center;
    }
    .zac40dhero-image {
        text-align: center;
        margin-top: 24px;
    }
    .main-nav ul {
        flex-direction: column;
        gap: 10px;
        padding: 8px 8px;
        border-radius: 18px;
    }
    .main-nav a {
        font-size: 1rem;
        padding: 8px 12px;
    }
    .zac40dfaq-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
    }
}
@media (max-width: 600px) {
    .zac40dsite-header {
        padding: 4px 0 2px 0;
    }
    .zac40dlogo h1 {
        margin: 0 0 0 0;
        font-size: 1.1rem;
        line-height: 1.1;
    }
    .main-nav {
        margin-top: 2px;
    }
    .zac40dhero {
        padding-top: 12px;
    }
    .zac40dsite-header, .zac40dfeatures, .zac40dabout, .zac40dfaq {
        padding-left: 0;
        padding-right: 0;
    }
    .main-nav {
        width: 100%;
        margin-left: 0;
        margin-right: 0;
        box-sizing: border-box;
    }
    .main-nav ul {
        flex-direction: column;
        gap: 10px;
        align-items: stretch;
        width: 100%;
        max-width: 100%;
        min-width: 0;
        box-sizing: border-box;
        padding: 8px 12px;
        border-radius: 12px;
        margin: 0;
        left: 0;
        background: #fff;
    }
    .main-nav li {
        width: 100%;
        box-sizing: border-box;
    }
    .main-nav a {
        width: 100%;
        text-align: center;
        font-size: 1rem;
        padding: 10px 0;
        box-sizing: border-box;
        word-break: break-all;
        overflow-wrap: break-word;
    }
    .zac40dhero-content h2 {
        font-size: 1.1rem;
        line-height: 1.3;
        margin-bottom: 10px;
    }
    .zac40dhero-content p {
        margin-bottom: 20px;
    }
    .zac40ddownload-buttons {
        flex-direction: column;
        gap: 12px;
        align-items: center;
        margin-bottom: 0;
    }
    .zac40dbtn {
        background: linear-gradient(90deg, #1a73e8 60%, #4fc3f7 100%);
        color: #fff;
        border: none;
        font-weight: 700;
        box-shadow: 0 2px 10px rgba(26,115,232,0.13);
    }
    .zac40dbtn-secondary {
        background: #f6fafd;
        color: #1a73e8;
        border: 1.5px solid #b6d0f7;
        font-weight: 600;
        box-shadow: none;
    }
    .zac40dbtn-register {
        background: linear-gradient(90deg, #fffbe7 60%, #ffe082 100%);
        color: #b8860b;
        border: 1.5px solid #ffe082;
        font-weight: 700;
        box-shadow: 0 2px 10px rgba(255,193,7,0.10);
    }
    .zac40dbtn:hover, .zac40dbtn-secondary:hover, .zac40dbtn-register:hover {
        opacity: 0.93;
        box-shadow: 0 4px 18px rgba(26,115,232,0.13);
    }
    .zac40dhero-image img {
        max-width: 95vw;
        border-radius: 10px;
        margin-top: 0;
        box-shadow: 0 2px 12px rgba(0,0,0,0.10);
    }
    .zac40dfeatures-grid, .zac40dfaq-grid {
        gap: 16px;
    }
    .zac40dfeature-card, .zac40dfaq-card {
        max-width: 100%;
    }
    .zac40dcontainer {
        padding: 0 8px;
    }
    .zac40dfaq-grid {
        grid-template-columns: 1fr;
        gap: 12px;
    }
    .zac40dfaq-card {
        padding: 14px 6px 10px 6px;
        min-height: 90px;
    }
    .zac40dfaq-q {
        font-size: 1rem;
    }
    .zac40dfaq-a {
        font-size: 0.95rem;
    }
}
/* 优势板块 */
.zac40dadvantages {
    background: #f7f9fa;
    padding: 40px 0 32px 0;
}
.zac40dadvantages h3 {
    color: #1a73e8;
    text-align: center;
    font-size: 1.5rem;
    margin-bottom: 24px;
}
.zac40dadvantages-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-top: 32px;
}
.zac40dadvantage-card {
    background: #fff;
    border-radius: 16px;
    box-shadow: 0 4px 18px rgba(16,24,40,0.13);
    border: 2px solid #e3eaf5;
    padding: 26px 16px 18px 16px;
    display: flex;
    flex-direction: column;
    align-items: center;
    transition: transform 0.18s, box-shadow 0.18s, border-color 0.18s;
    min-height: 180px;
    position: relative;
}
.zac40dadvantage-card:hover {
    transform: translateY(-6px) scale(1.04);
    box-shadow: 0 10px 32px rgba(26,115,232,0.18);
    border-color: #1a73e8;
}
.zac40dadvantage-icon {
    font-size: 1.7rem;
    color: #1a73e8;
    font-weight: bold;
    background: #e3f0fd;
    border-radius: 50%;
    width: 38px;
    height: 38px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 12px;
    box-shadow: 0 2px 8px rgba(26,115,232,0.08);
}
.zac40dadvantage-card h4 {
    color: #1a73e8;
    font-size: 1.08rem;
    margin-bottom: 8px;
    margin-top: 0;
}
.zac40dadvantage-card p {
    color: #444;
    font-size: 0.98rem;
    text-align: center;
    margin: 0;
}
@media (max-width: 900px) {
    .zac40dadvantages-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
    }
}
@media (max-width: 600px) {
    .zac40dadvantages-grid {
        grid-template-columns: 1fr;
        gap: 12px;
    }
    .zac40dadvantage-card {
        padding: 16px 6px 12px 6px;
        min-height: 120px;
    }
    .zac40dadvantage-icon {
        font-size: 1.2rem;
        width: 28px;
        height: 28px;
    }
}
/* 下载流程 */
.zac40ddownload-steps {
    background: #fff;
    padding: 40px 0 32px 0;
}
.zac40ddownload-steps h3 {
    color: #1a73e8;
    text-align: center;
    font-size: 1.5rem;
    margin-bottom: 18px;
}
.zac40dsteps-list {
    max-width: 600px;
    margin: 0 auto;
    padding-left: 20px;
    font-size: 1.05rem;
    color: #333;
}
.zac40dsteps-list li {
    margin-bottom: 10px;
}
/* 用户评价 */
.zac40dtestimonials {
    background: #f7f9fa;
    padding: 40px 0 32px 0;
}
.zac40dtestimonials h3 {
    color: #1a73e8;
    text-align: center;
    font-size: 1.5rem;
    margin-bottom: 18px;
}
.zac40dtestimonials-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    justify-content: center;
}
.zac40dtestimonial-item {
    background: #fff;
    border-radius: 10px;
    box-shadow: 0 2px 8px rgba(30,144,255,0.06);
    padding: 18px 20px;
    min-width: 200px;
    max-width: 320px;
    flex: 1 1 200px;
    font-size: 1rem;
    text-align: center;
}
.zac40dtestimonial-item span {
    display: block;
    color: #888;
    font-size: 0.95rem;
    margin-top: 8px;
}
/* 平台资质与安全保障卡片式框架 */
.zac40dqualification h3 {
    color: #1a73e8;
    text-align: center;
    font-size: 1.5rem;
    margin-bottom: 18px;
}
.zac40dqualification-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-top: 32px;
    justify-items: center;
}
.zac40dqualification-card {
    background: #fff;
    border-radius: 16px;
    box-shadow: 0 4px 18px rgba(16,24,40,0.13);
    border: 2px solid #e3eaf5;
    padding: 26px 16px 18px 16px;
    display: flex;
    flex-direction: column;
    align-items: center;
    transition: transform 0.18s, box-shadow 0.18s, border-color 0.18s;
    min-height: 180px;
    position: relative;
}
.zac40dqualification-card:hover {
    transform: translateY(-6px) scale(1.04);
    box-shadow: 0 10px 32px rgba(26,115,232,0.18);
    border-color: #1a73e8;
}
.zac40dqualification-icon {
    font-size: 2.1rem;
    color: #1a73e8;
    background: #e3f0fd;
    border-radius: 50%;
    width: 38px;
    height: 38px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 12px;
    box-shadow: 0 2px 8px rgba(26,115,232,0.08);
}
.zac40dqualification-card h4 {
    color: #1a73e8;
    font-size: 1.08rem;
    margin-bottom: 8px;
    margin-top: 0;
}
.zac40dqualification-card p {
    color: #444;
    font-size: 0.98rem;
    text-align: center;
    margin: 0;
}
@media (max-width: 900px) {
    .zac40dqualification-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
    }
}
@media (max-width: 600px) {
    .zac40dqualification-grid {
        grid-template-columns: 1fr;
        gap: 12px;
    }
    .zac40dqualification-card {
        padding: 16px 6px 12px 6px;
        min-height: 120px;
    }
    .zac40dqualification-icon {
        font-size: 1.2rem;
        width: 28px;
        height: 28px;
    }
}
/* 合作伙伴 */
.zac40dpartners {
    background: #f7f9fa;
    padding: 40px 0 32px 0;
}
.zac40dpartners h3 {
    color: #1a73e8;
    text-align: center;
    font-size: 1.5rem;
    margin-bottom: 18px;
}
.zac40dpartners-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 18px;
    justify-content: center;
    color: #1a73e8;
    font-size: 1.1rem;
}
.zac40dpartners-grid span {
    background: #fff;
    border-radius: 8px;
    padding: 8px 18px;
    box-shadow: 0 1px 4px rgba(30,144,255,0.05);
}
/* 风险提示 */
.zac40drisk-warning {
    background: #fff3cd;
    color: #856404;
    padding: 32px 0 24px 0;
    margin-bottom: 0;
}
.zac40drisk-warning h3 {
    color: #b8860b;
    text-align: center;
    font-size: 1.2rem;
    margin-bottom: 10px;
}
.zac40drisk-warning p {
    max-width: 700px;
    margin: 0 auto;
    font-size: 1rem;
    text-align: center;
}
/* 响应式增强 */
@media (max-width: 900px) {
    .zac40dadvantages-grid, .zac40dtestimonials-grid, .zac40dpartners-grid {
        flex-direction: column;
        align-items: center;
    }
}
/* 选择欧的六大理由卡片式框架 */
.zac40dsteps-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-top: 32px;
}
.zac40dstep-card {
    background: #fff;
    border-radius: 16px;
    box-shadow: 0 4px 18px rgba(16,24,40,0.13);
    border: 2px solid #e3eaf5;
    padding: 26px 16px 18px 16px;
    display: flex;
    flex-direction: column;
    align-items: center;
    transition: transform 0.18s, box-shadow 0.18s, border-color 0.18s;
    min-height: 180px;
    position: relative;
}
.zac40dstep-card:hover {
    transform: translateY(-6px) scale(1.04);
    box-shadow: 0 10px 32px rgba(26,115,232,0.18);
    border-color: #1a73e8;
}
.zac40dstep-icon {
    font-size: 1.7rem;
    color: #1a73e8;
    font-weight: bold;
    background: #e3f0fd;
    border-radius: 50%;
    width: 38px;
    height: 38px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 12px;
    box-shadow: 0 2px 8px rgba(26,115,232,0.08);
}
.zac40dstep-card h4 {
    color: #1a73e8;
    font-size: 1.08rem;
    margin-bottom: 8px;
    margin-top: 0;
}
.zac40dstep-card p {
    color: #444;
    font-size: 0.98rem;
    text-align: center;
    margin: 0;
}
@media (max-width: 900px) {
    .zac40dsteps-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
    }
}
@media (max-width: 600px) {
    .zac40dsteps-grid {
        grid-template-columns: 1fr;
        gap: 12px;
    }
    .zac40dstep-card {
        padding: 16px 6px 12px 6px;
        min-height: 120px;
    }
    .zac40dstep-icon {
        font-size: 1.2rem;
        width: 28px;
        height: 28px;
    }
}
/* 汉堡菜单按钮样式 */
.nav-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    width: 40px;
    height: 40px;
    padding: 0;
    margin-left: auto;
    z-index: 1002;
}
.nav-toggle .bar {
    display: block;
    width: 26px;
    height: 3px;
    margin: 4px 0;
    background: #1a73e8;
    border-radius: 2px;
    transition: all 0.3s;
}
.nav-toggle.open .bar:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}
.nav-toggle.open .bar:nth-child(2) {
    opacity: 0;
}
.nav-toggle.open .bar:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}
@media (max-width: 600px) {
    .nav-toggle {
        display: flex;
    }
    .main-nav {
        position: absolute;
        top: 60px;
        left: 0;
        width: 100vw;
        background: #fff;
        box-shadow: 0 4px 18px rgba(16,24,40,0.13);
        border-radius: 0 0 16px 16px;
        z-index: 1001;
        transition: max-height 0.3s, opacity 0.3s;
        max-height: 0;
        opacity: 0;
        overflow: hidden;
        pointer-events: none;
    }
    .main-nav.open {
        max-height: 75vh;
        overflow-y: auto;
        opacity: 1;
        pointer-events: auto;
    }
    .main-nav ul {
        padding: 12px 2vw;
        border-radius: 12px;
    }
}
@media (min-width: 601px) {
    .main-nav {
        position: static !important;
        max-height: none !important;
        opacity: 1 !important;
        pointer-events: auto !important;
        box-shadow: none;
        border-radius: 32px;
    }
    .nav-toggle {
        display: none !important;
    }
} 
@media (max-width: 600px) {
    .zac40dfeatures-grid {
        grid-template-columns: 1fr !important;
        gap: 12px !important;
    }
}
@media (min-width: 901px) {
    .zac40dhero-image img {
        margin-left: 24px;
    }
}

/* 头部布局 */
.zac40dsite-header .zac40dcontainer {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    position: relative;
}
.zac40dlogo a {
    text-decoration: none;
    color: inherit;
}
.main-nav li.zac40dthis a,
.main-nav li.zac40dnav-item.zac40dthis a {
    background: #1a73e8;
    color: #fff;
}

/* ========== 首页板块差异化布局 ========== */
.zac40dsection-head {
    text-align: center;
    margin-bottom: 28px;
}
.zac40dadvantages .zac40dsection-head h3,
.zac40dadvantages .zac40dsection-head--light h3 {
    color: #fff;
}
.zac40dadvantages .zac40dsection-label {
    background: rgba(255,255,255,0.18);
    color: #fff;
}
.zac40dqualification .zac40dsection-head--light h3 {
    color: #1a73e8;
}
.zac40dsection-label {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: #1a73e8;
    background: #e3f0fd;
    padding: 4px 14px;
    border-radius: 20px;
    margin-bottom: 10px;
}
.zac40dsection-head h3 {
    margin: 0;
    font-size: 1.6rem;
    color: #1a73e8;
}

/* 核心功能 - 横向列表双列 */
.zac40dfeatures {
    background: #fff;
    padding: 48px 0 40px;
}
.zac40dfeatures-list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
    align-items: stretch;
}
.zac40dfeature-row {
    display: flex;
    gap: 14px;
    align-items: flex-start;
    height: 100%;
    padding: 18px 16px;
    background: #f7f9fa;
    border-radius: 14px;
    border-left: 4px solid #1a73e8;
    transition: background 0.2s;
    box-sizing: border-box;
}
.zac40dfeature-row:hover {
    background: #eef4fd;
}
.zac40dfeature-row .zac40dfeature-icon {
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    background: #fff;
    border-radius: 12px;
    box-shadow: 0 2px 8px rgba(26,115,232,0.1);
}
.zac40dfeature-body h4 {
    margin: 0 0 8px;
    color: #1a73e8;
    font-size: 1.05rem;
}
.zac40dfeature-body p {
    margin: 0;
    font-size: 0.92rem;
    color: #555;
    line-height: 1.65;
}

/* 平台优势 - 数据条 + 编号面板 */
.zac40dadvantages {
    background: linear-gradient(160deg, #0d47a1 0%, #1a73e8 60%, #4fc3f7 100%);
    padding: 48px 0 44px;
    color: #fff;
}
.zac40dadvantages-metrics {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    margin-bottom: 32px;
}
.zac40dmetric {
    text-align: center;
    padding: 20px 12px;
    background: rgba(255,255,255,0.12);
    border-radius: 14px;
    backdrop-filter: blur(4px);
    border: 1px solid rgba(255,255,255,0.2);
}
.zac40dmetric strong {
    display: block;
    font-size: 1.6rem;
    font-weight: 800;
    line-height: 1.2;
}
.zac40dmetric span {
    display: block;
    font-size: 0.85rem;
    opacity: 0.88;
    margin-top: 4px;
}
.zac40dadvantages-panels {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 14px;
    align-items: stretch;
}
.zac40dadvantage-panel {
    position: relative;
    display: flex;
    flex-direction: column;
    height: 100%;
    background: #fff;
    border-radius: 14px;
    padding: 20px 16px 16px;
    color: #333;
    overflow: hidden;
    box-sizing: border-box;
}
.zac40dpanel-num {
    position: absolute;
    top: 8px;
    right: 12px;
    font-size: 2rem;
    font-weight: 800;
    color: #e3eaf5;
    line-height: 1;
}
.zac40dpanel-icon {
    font-size: 1.6rem;
    margin-bottom: 10px;
}
.zac40dadvantage-panel h4 {
    margin: 0 0 8px;
    color: #1a73e8;
    font-size: 1rem;
}
.zac40dadvantage-panel p {
    margin: 0;
    font-size: 0.88rem;
    color: #666;
    line-height: 1.6;
}

/* 下载流程 - 3×2 步骤卡片 */
.zac40ddownload-steps {
    background: #f7f9fa;
    padding: 48px 0 44px;
}
.zac40dsteps-timeline {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    align-items: stretch;
}
.zac40dstep-node {
    display: flex;
    flex-direction: column;
    height: 100%;
    background: #fff;
    border-radius: 14px;
    padding: 18px 16px;
    box-shadow: 0 2px 10px rgba(16,24,40,0.06);
    border: 1px solid #e8eef5;
    box-sizing: border-box;
}
.zac40dstep-marker {
    width: 36px;
    height: 36px;
    margin: 0 0 12px;
    background: #1a73e8;
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1rem;
    flex-shrink: 0;
}
.zac40dstep-content {
    flex: 1;
    min-width: 0;
}
.zac40dstep-content h4 {
    margin: 0 0 8px;
    color: #1a73e8;
    font-size: 0.98rem;
}
.zac40dstep-content p {
    margin: 0;
    font-size: 0.86rem;
    color: #666;
    line-height: 1.6;
    text-align: left;
}

/* 平台资质 - 交替宽条 */
.zac40dqualification {
    background: #fff;
    padding: 48px 0 40px;
}
.zac40dqualification-bands {
    display: flex;
    flex-direction: column;
    gap: 0;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(16,24,40,0.08);
}
.zac40dqual-band {
    display: flex;
    align-items: center;
    gap: 24px;
    padding: 24px 28px;
    background: #fff;
}
.zac40dqual-band--alt {
    background: #f0f6ff;
}
.zac40dqual-band-icon {
    flex-shrink: 0;
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    background: #e3f0fd;
    border-radius: 50%;
}
.zac40dqual-band-text {
    flex: 1;
    min-width: 0;
}
.zac40dqual-band-text h4 {
    margin: 0 0 6px;
    color: #1a73e8;
    font-size: 1.05rem;
}
.zac40dqual-band-text p {
    margin: 0;
    font-size: 0.92rem;
    color: #555;
    line-height: 1.65;
}

/* 常见问题 - 左介绍右列表 */
.zac40dfaq {
    background: #f7f9fa;
    padding: 48px 0 40px;
}
.zac40dfaq-layout {
    display: grid;
    grid-template-columns: 260px 1fr;
    gap: 40px;
    align-items: start;
}
.zac40dfaq-intro h3 {
    margin: 0 0 12px;
    font-size: 1.6rem;
    color: #1a73e8;
}
.zac40dfaq-intro p {
    margin: 0;
    font-size: 0.95rem;
    color: #888;
    line-height: 1.6;
}
.zac40dfaq-list {
    display: flex;
    flex-direction: column;
    gap: 0;
    background: #fff;
    border-radius: 14px;
    overflow: hidden;
    box-shadow: 0 2px 12px rgba(16,24,40,0.06);
}
.zac40dfaq-item {
    padding: 18px 24px;
    border-bottom: 1px solid #f0f0f0;
}
.zac40dfaq-item:last-child {
    border-bottom: none;
}
.zac40dfaq-item .zac40dfaq-q {
    font-weight: 700;
    color: #1a73e8;
    font-size: 1rem;
    margin-bottom: 8px;
}
.zac40dfaq-item .zac40dfaq-a {
    font-size: 0.92rem;
    color: #555;
    line-height: 1.65;
}

/* 最新资讯 - 图片叠加标题 */
.zac40darticles {
    background: #fff;
    padding: 48px 0 40px;
}
.zac40darticles-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 14px;
    align-items: stretch;
}
.zac40darticle-card {
    position: relative;
    border-radius: 12px;
    overflow: hidden;
    aspect-ratio: 4/3;
    min-height: 0;
    box-shadow: 0 2px 12px rgba(16,24,40,0.1);
    transition: transform 0.2s, box-shadow 0.2s;
}
.zac40darticle-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(26,115,232,0.18);
}
.zac40darticle-card-thumb {
    display: block;
    position: absolute;
    inset: 0;
    background: #e3eaf5;
}
.zac40darticle-card-thumb img,
.zac40dlist-thumb img,
.zac40drelated-thumb img,
.zac40dsidebar-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.3s;
}
.zac40darticle-card:hover .zac40darticle-card-thumb img {
    transform: scale(1.08);
}
.zac40darticle-card h4 {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    margin: 0;
    padding: 28px 12px 12px;
    background: linear-gradient(transparent, rgba(0,0,0,0.75));
    font-size: 0.88rem;
    line-height: 1.4;
    z-index: 2;
}
.zac40darticle-card h4 a {
    color: #fff;
    text-decoration: none;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.zac40darticle-card h4 a:hover {
    color: #cce0ff;
}

/* 导航与中屏适配 */
@media (max-width: 1100px) {
    .main-nav {
        width: 100%;
        margin-top: 6px;
    }
    .main-nav ul {
        flex-wrap: wrap;
        justify-content: center;
        gap: 6px 10px;
        padding: 8px 12px;
        border-radius: 16px;
    }
    .main-nav a {
        font-size: 0.88rem;
        padding: 6px 12px;
    }
    .zac40darticles-grid {
        grid-template-columns: repeat(4, 1fr);
    }
    .zac40dadvantages-panels {
        grid-template-columns: repeat(2, 1fr);
    }
}
@media (max-width: 900px) {
    .zac40dsite-header .zac40dcontainer {
        flex-wrap: wrap;
    }
    .zac40dfeatures-list {
        grid-template-columns: 1fr;
    }
    .zac40dadvantages-metrics {
        grid-template-columns: repeat(2, 1fr);
    }
    .zac40dfaq-layout {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    .zac40dfaq-intro {
        text-align: center;
    }
    .zac40dsteps-timeline {
        grid-template-columns: repeat(2, 1fr);
    }
    .zac40darticles-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    .zac40dhero-content h2 {
        font-size: 1.6rem;
    }
    .zac40ddownload-buttons .zac40dbtn {
        flex: 1 1 auto;
        min-width: 140px;
        text-align: center;
    }
}
@media (max-width: 600px) {
    .zac40dsection-head h3,
    .zac40dfaq-intro h3 {
        font-size: 1.3rem;
    }
    .zac40dfeatures,
    .zac40dadvantages,
    .zac40ddownload-steps,
    .zac40dqualification,
    .zac40dfaq,
    .zac40darticles {
        padding: 32px 0 28px;
    }
    .zac40dfeature-row {
        padding: 16px 14px;
    }
    .zac40dfeature-row .zac40dfeature-icon {
        width: 40px;
        height: 40px;
        font-size: 1.2rem;
    }
    .zac40dadvantages-metrics {
        grid-template-columns: repeat(2, 1fr);
        gap: 10px;
    }
    .zac40dmetric {
        padding: 14px 8px;
    }
    .zac40dmetric strong {
        font-size: 1.2rem;
    }
    .zac40dadvantages-panels {
        grid-template-columns: 1fr;
    }
    .zac40dsteps-timeline {
        grid-template-columns: 1fr;
        gap: 12px;
    }
    .zac40dstep-node {
        flex-direction: row;
        gap: 14px;
        padding: 14px;
    }
    .zac40dstep-marker {
        margin: 0;
        width: 32px;
        height: 32px;
        font-size: 0.9rem;
    }
    .zac40dstep-content {
        flex: 1;
        min-width: 0;
    }
    .zac40dqual-band {
        flex-direction: column;
        text-align: center;
        padding: 20px 16px;
        gap: 12px;
    }
    .zac40dfaq-item {
        padding: 14px 16px;
    }
    .zac40darticles-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 10px;
    }
    .zac40darticle-card {
        aspect-ratio: 4/3;
    }
    .zac40darticle-card h4 {
        padding: 20px 10px 10px;
        font-size: 0.82rem;
    }
}
@media (max-width: 400px) {
    .zac40darticles-grid {
        grid-template-columns: 1fr 1fr;
    }
}

/* 内容页 / 列表页布局 */
.zac40dpage-main {
    background: #f7f9fa;
    min-height: 60vh;
}
.zac40dpage-layout {
    display: flex;
    gap: 28px;
    padding: 32px 0;
    align-items: flex-start;
}
.zac40dmain-content {
    flex: 1;
    min-width: 0;
}
.zac40dsidebar {
    width: 280px;
    flex-shrink: 0;
}

/* 内容页 */
.zac40darticle-detail {
    background: #fff;
    border-radius: 16px;
    box-shadow: 0 2px 12px rgba(16,24,40,0.08);
    padding: 32px;
    margin-bottom: 24px;
}
.zac40darticle-title {
    font-size: 1.8rem;
    color: #222;
    margin: 0 0 16px;
    line-height: 1.4;
}
.zac40darticle-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    font-size: 0.9rem;
    color: #888;
    padding-bottom: 16px;
    border-bottom: 1px solid #e5e5e5;
    margin-bottom: 20px;
}
.zac40darticle-meta a {
    color: #1a73e8;
    text-decoration: none;
}
.zac40darticle-thumb-main {
    margin-bottom: 24px;
    text-align: center;
}
.zac40darticle-thumb-main img {
    width: 360px;
    max-width: 100%;
    height: 240px;
    object-fit: cover;
    border-radius: 12px;
    display: inline-block;
    background: #e3eaf5;
}
.zac40darticle-body {
    font-size: 1.05rem;
    line-height: 1.8;
    color: #333;
    word-break: break-word;
}
.zac40darticle-body img {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
}
.zac40ddiyfield {
    margin-top: 20px;
    padding-top: 16px;
    border-top: 1px dashed #e5e5e5;
}
.zac40darticle-images {
    margin-top: 20px;
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}
.zac40dimage-item {
    margin: 0;
    text-align: center;
    width: 120px;
}
.zac40dimage-thumb-link {
    display: block;
    width: 120px;
    height: 80px;
    overflow: hidden;
    border-radius: 8px;
    background: #e3eaf5;
}
.zac40dimage-thumb {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 8px;
}
.zac40dimage-item figcaption {
    font-size: 0.8rem;
    color: #888;
    margin-top: 6px;
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.zac40dmeta-tags {
    list-style: none;
    margin: 24px 0 0;
    padding: 16px 0 0;
    border-top: 1px solid #e5e5e5;
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}
.zac40dtagitem a {
    display: inline-block;
    background: #e3f0fd;
    color: #1a73e8;
    padding: 4px 12px;
    border-radius: 16px;
    font-size: 0.85rem;
    text-decoration: none;
}
.zac40dtagitem a:hover {
    background: #1a73e8;
    color: #fff;
}
.zac40darticle-nav {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 16px;
    margin-top: 24px;
    padding-top: 20px;
    border-top: 1px solid #e5e5e5;
    font-size: 0.95rem;
}
.zac40darticle-nav a {
    color: #1a73e8;
    text-decoration: none;
    word-break: break-all;
    line-height: 1.6;
}
.zac40darticle-nav a:hover {
    text-decoration: underline;
}

/* 相关推荐 */
.zac40drelated {
    background: #fff;
    border-radius: 16px;
    box-shadow: 0 2px 12px rgba(16,24,40,0.08);
    padding: 24px 32px;
}
.zac40drelated h3 {
    color: #1a73e8;
    font-size: 1.2rem;
    margin: 0 0 16px;
}
.zac40drelated-list {
    list-style: none;
    margin: 0;
    padding: 0;
}
.zac40drelated-item {
    display: flex;
    gap: 14px;
    padding: 12px 0;
    border-bottom: 1px solid #f0f0f0;
}
.zac40drelated-item:last-child {
    border-bottom: none;
}
.zac40drelated-thumb {
    flex-shrink: 0;
    width: 100px;
    height: 68px;
    overflow: hidden;
    border-radius: 8px;
    background: #e3eaf5;
}
.zac40drelated-title {
    color: #222;
    text-decoration: none;
    font-weight: 600;
    font-size: 0.95rem;
}
.zac40drelated-title:hover {
    color: #1a73e8;
}
.zac40drelated-info p {
    margin: 6px 0 0;
    font-size: 0.85rem;
    color: #888;
    line-height: 1.5;
}

/* 侧栏 */
.zac40dsidebar-block {
    background: #fff;
    border-radius: 12px;
    box-shadow: 0 2px 12px rgba(16,24,40,0.08);
    margin-bottom: 20px;
    overflow: hidden;
}
.zac40dsidebar-title {
    margin: 0;
    padding: 14px 16px;
    background: #1a73e8;
    font-size: 1rem;
}
.zac40dsidebar-title a {
    color: #fff;
    text-decoration: none;
}
.zac40dsidebar-list {
    list-style: none;
    margin: 0;
    padding: 8px 0;
}
.zac40dsidebar-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 14px;
    text-decoration: none;
    transition: background 0.15s;
}
.zac40dsidebar-item:hover {
    background: #f0f6ff;
}
.zac40dsidebar-thumb {
    flex-shrink: 0;
    width: 56px;
    height: 42px;
    overflow: hidden;
    border-radius: 6px;
    background: #e3eaf5;
}
.zac40dsidebar-text {
    flex: 1;
    font-size: 0.88rem;
    color: #333;
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.zac40dsidebar-item:hover .zac40dsidebar-text {
    color: #1a73e8;
}

/* 列表页 */
.zac40dlistbox {
    background: #fff;
    border-radius: 16px 16px 0 0;
    padding: 24px 32px 0;
    box-shadow: 0 2px 12px rgba(16,24,40,0.08);
}
.zac40dlist-title {
    font-size: 1.6rem;
    color: #1a73e8;
    margin: 0 0 16px;
    padding-bottom: 16px;
    border-bottom: 2px solid #e3eaf5;
}
.zac40dlist-items {
    list-style: none;
    margin: 0;
    padding: 0;
}
.zac40dlist-item {
    display: flex;
    gap: 20px;
    padding: 24px 0;
    border-bottom: 1px solid #f0f0f0;
}
.zac40dlist-item:last-child {
    border-bottom: none;
}
.zac40dlist-thumb {
    flex-shrink: 0;
    width: 200px;
    height: 134px;
    overflow: hidden;
    border-radius: 10px;
    background: #e3eaf5;
    display: block;
}
.zac40dlist-item:hover .zac40dlist-thumb img {
    transform: scale(1.05);
}
.zac40dlist-info {
    flex: 1;
    min-width: 0;
}
.zac40dlist-item-title {
    margin: 0 0 8px;
    font-size: 1.15rem;
    line-height: 1.4;
}
.zac40dlist-item-title a {
    color: #222;
    text-decoration: none;
}
.zac40dlist-item-title a:hover {
    color: #1a73e8;
}
.zac40dlist-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    font-size: 0.85rem;
    color: #999;
    margin-bottom: 8px;
}
.zac40dlist-intro {
    margin: 0;
    font-size: 0.95rem;
    color: #666;
    line-height: 1.7;
}

/* 分页 - 左右布局 */
.pagebar {
    background: #fff;
    border-radius: 0 0 16px 16px;
    padding: 20px 32px 28px;
    box-shadow: 0 2px 12px rgba(16,24,40,0.08);
    margin-bottom: 24px;
}
.zac40dpages-wrap {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
}
.zac40dpages .pagelist {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 8px;
}
.zac40dpages-left {
    justify-content: flex-start;
}
.zac40dpages-center {
    justify-content: center;
    flex: 1;
}
.zac40dpages-right {
    justify-content: flex-end;
}
.zac40dpages .pagelist li {
    display: inline-block;
}
.zac40dpages .pagelist a,
.zac40dpages .pagelist span {
    display: inline-block;
    padding: 8px 16px;
    border-radius: 8px;
    text-decoration: none;
    color: #1a73e8;
    font-size: 0.95rem;
    border: 1px solid #d0dff5;
    transition: background 0.15s, color 0.15s;
}
.zac40dpages .pagelist a:hover {
    background: #1a73e8;
    color: #fff;
    border-color: #1a73e8;
}
.zac40dpages .pagelist .thisclass,
.zac40dpages .pagelist .thisclass a {
    background: #1a73e8;
    color: #fff;
    border-color: #1a73e8;
}
.zac40dpages .pagelist .pageinfo {
    flex: 1;
    text-align: center;
    border: none;
    color: #888;
    padding: 8px 0;
}
.zac40dfooter-links {
    list-style: none;
    margin: 0 0 12px;
    padding: 0;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 16px;
}
.zac40dfooter-links a {
    color: #fff;
    text-decoration: none;
    opacity: 0.9;
}
.zac40dfooter-links a:hover {
    opacity: 1;
    text-decoration: underline;
}
.clear {
    clear: both;
}

/* 内容页/列表页 - 响应式 */
@media (max-width: 900px) {
    .zac40dpage-layout {
        flex-direction: column;
    }
    .zac40dsidebar {
        width: 100%;
    }
    .zac40dlist-thumb {
        width: 160px;
        height: 107px;
    }
}
@media (max-width: 600px) {
    .zac40darticle-detail {
        padding: 20px 16px;
    }
    .zac40darticle-title {
        font-size: 1.3rem;
    }
    .zac40darticle-meta {
        flex-direction: column;
        gap: 6px;
    }
    .zac40darticle-nav {
        flex-direction: column;
    }
    .zac40dpages-wrap {
        flex-direction: column;
        align-items: stretch;
    }
    .zac40dpages-left,
    .zac40dpages-center,
    .zac40dpages-right {
        justify-content: center;
    }
    .zac40drelated {
        padding: 16px;
    }
    .zac40drelated-item {
        flex-direction: column;
    }
    .zac40drelated-thumb {
        width: 100%;
        height: auto;
        aspect-ratio: 3/2;
    }
    .zac40dlistbox,
    .pagebar {
        padding-left: 16px;
        padding-right: 16px;
    }
    .zac40dlist-item {
        flex-direction: column;
        gap: 12px;
        padding: 16px 0;
    }
    .zac40dlist-thumb {
        width: 100%;
        height: auto;
        aspect-ratio: 3/2;
    }
    .zac40dsidebar-thumb {
        width: 48px;
        height: 36px;
    }
}