.section-alt {
    background: linear-gradient(180deg, #f8f9ff 0%, #fff 100%);
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 32px;
}

.product-card {
    background: #fff;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.06);
    transition: transform 0.3s, box-shadow 0.3s;
}

.product-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 40px rgba(108, 92, 231, 0.15);
}

.product-img {
    height: 240px;
    overflow: hidden;
    background: linear-gradient(135deg, #f8f9ff 0%, #e8e6ff 100%);
    display: flex;
    align-items: center;
    justify-content: center;
}

.product-img img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    transition: transform 0.4s;
}

.product-card:hover .product-img img {
    transform: scale(1.05);
}

.product-info {
    padding: 28px;
}

.product-info h3 {
    font-size: 22px;
    font-weight: 700;
    color: #1a1a2e;
    margin-bottom: 12px;
}

.product-tag {
    display: inline-block;
    padding: 6px 14px;
    background: linear-gradient(135deg, #6c5ce7, #a29bfe);
    color: #fff;
    font-size: 12px;
    font-weight: 600;
    border-radius: 20px;
    margin-bottom: 16px;
}

.product-tag.tag-advanced {
    background: linear-gradient(135deg, #00b894, #55efc4);
}

.product-tag.tag-flagship {
    background: linear-gradient(135deg, #e17055, #fab1a0);
}

.product-tag.tag-balance {
    background: linear-gradient(135deg, #0984e3, #74b9ff);
}

.product-tag.tag-newgen {
    background: linear-gradient(135deg, #6c5ce7, #fd79a8);
}

.product-desc {
    color: #555;
    font-size: 15px;
    line-height: 1.8;
    margin-bottom: 20px;
}

.product-features {
    list-style: none;
    margin-bottom: 24px;
}

.product-features li {
    position: relative;
    padding-left: 24px;
    margin-bottom: 10px;
    color: #444;
    font-size: 14px;
}

.product-features li::before {
    content: "";
    position: absolute;
    left: 0;
    top: 6px;
    width: 12px;
    height: 12px;
    background: linear-gradient(135deg, #6c5ce7, #a29bfe);
    border-radius: 50%;
}

.compare-table-wrapper {
    overflow-x: auto;
    margin-bottom: 48px;
    border-radius: 16px;
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.06);
}

.compare-table {
    width: 100%;
    min-width: 800px;
    border-collapse: collapse;
    background: #fff;
}

.compare-table th,
.compare-table td {
    padding: 18px 16px;
    text-align: center;
    border-bottom: 1px solid #eee;
}

.compare-table th {
    background: linear-gradient(135deg, #6c5ce7, #a29bfe);
    color: #fff;
    font-weight: 600;
    font-size: 15px;
}

.compare-table th:first-child {
    border-radius: 16px 0 0 0;
}

.compare-table th:last-child {
    border-radius: 0 16px 0 0;
}

.compare-table td {
    font-size: 14px;
    color: #444;
}

.compare-table td:first-child {
    font-weight: 600;
    color: #1a1a2e;
    background: #f8f9ff;
    text-align: left;
    padding-left: 24px;
}

.compare-table tbody tr:hover {
    background: #fafbff;
}

.compare-table tbody tr:last-child td:first-child {
    border-radius: 0 0 0 16px;
}

.compare-table tbody tr:last-child td:last-child {
    border-radius: 0 0 16px 0;
}

.compare-summary {
    background: #fff;
    border-radius: 20px;
    padding: 40px;
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.06);
}

.compare-summary h3 {
    font-size: 24px;
    font-weight: 700;
    color: #1a1a2e;
    margin-bottom: 28px;
    text-align: center;
}

.summary-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 24px;
}

.summary-card {
    padding: 24px;
    background: linear-gradient(135deg, #f8f9ff 0%, #fff 100%);
    border-radius: 16px;
    border: 1px solid #e8e6ff;
}

.summary-card h4 {
    font-size: 18px;
    font-weight: 700;
    color: #6c5ce7;
    margin-bottom: 12px;
}

.summary-card p {
    font-size: 14px;
    color: #555;
    line-height: 1.7;
}

.guide-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 28px;
}

.guide-card {
    background: #fff;
    border-radius: 20px;
    padding: 32px;
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.06);
    position: relative;
    transition: transform 0.3s, box-shadow 0.3s;
}

.guide-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 32px rgba(108, 92, 231, 0.12);
}

.guide-number {
    position: absolute;
    top: -12px;
    left: 28px;
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, #6c5ce7, #a29bfe);
    color: #fff;
    font-size: 20px;
    font-weight: 700;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 16px rgba(108, 92, 231, 0.3);
}

.guide-card h3 {
    font-size: 20px;
    font-weight: 700;
    color: #1a1a2e;
    margin-bottom: 16px;
    margin-top: 20px;
}

.guide-card p {
    font-size: 15px;
    color: #555;
    line-height: 1.8;
}

.guide-card a {
    color: #6c5ce7;
    text-decoration: none;
}

.guide-card a:hover {
    text-decoration: underline;
}

.news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 32px;
}

.news-card {
    background: #fff;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.06);
    transition: transform 0.3s;
}

.news-card:hover {
    transform: translateY(-4px);
}

.news-img {
    height: 200px;
    overflow: hidden;
}

.news-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s;
}

.news-card:hover .news-img img {
    transform: scale(1.05);
}

.news-content {
    padding: 28px;
}

.news-content h3 {
    font-size: 18px;
    font-weight: 700;
    color: #1a1a2e;
    margin-bottom: 14px;
    line-height: 1.5;
}

.news-excerpt {
    font-size: 14px;
    color: #555;
    line-height: 1.8;
    margin-bottom: 16px;
}

.news-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.news-meta span {
    font-size: 12px;
    color: #6c5ce7;
    background: #f0eeff;
    padding: 6px 12px;
    border-radius: 20px;
}

.news-more {
    font-size: 14px;
    color: #6c5ce7;
    text-decoration: none;
    font-weight: 500;
}

.news-more:hover {
    text-decoration: underline;
}

.news-full {
    display: none;
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid #eee;
}

.news-full p {
    font-size: 14px;
    color: #555;
    line-height: 1.8;
    margin-bottom: 14px;
}

.news-full p:last-child {
    margin-bottom: 0;
}

.news-card.expanded .news-full {
    display: block;
}

.news-card.expanded .news-more::after {
    content: "收起";
}

.news-card.expanded .news-more {
    font-size: 0;
}

.news-card.expanded .news-more::after {
    font-size: 14px;
}

.faq-list {
    max-width: 900px;
    margin: 0 auto;
}

.faq-item {
    background: #fff;
    border-radius: 16px;
    margin-bottom: 16px;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
    overflow: hidden;
}

.faq-question {
    padding: 24px 60px 24px 28px;
    font-size: 17px;
    font-weight: 600;
    color: #1a1a2e;
    cursor: pointer;
    position: relative;
    transition: background 0.2s;
    margin: 0;
}

.faq-question:hover {
    background: #fafbff;
}

.faq-question::after {
    content: "";
    position: absolute;
    right: 28px;
    top: 50%;
    width: 12px;
    height: 12px;
    border-right: 2px solid #6c5ce7;
    border-bottom: 2px solid #6c5ce7;
    transform: translateY(-70%) rotate(45deg);
    transition: transform 0.3s;
}

.faq-item.active .faq-question::after {
    transform: translateY(-30%) rotate(-135deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease, padding 0.3s ease;
}

.faq-item.active .faq-answer {
    max-height: 1000px;
    padding: 0 28px 28px;
}

.faq-answer p {
    font-size: 15px;
    color: #555;
    line-height: 1.8;
    margin-bottom: 14px;
}

.faq-answer p:last-child {
    margin-bottom: 0;
}

.faq-answer a {
    color: #6c5ce7;
    text-decoration: none;
}

.faq-answer a:hover {
    text-decoration: underline;
}

.about-content {
    max-width: 900px;
    margin: 0 auto;
    background: #fff;
    border-radius: 20px;
    padding: 48px;
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.06);
}

.about-content p {
    font-size: 16px;
    color: #444;
    line-height: 1.9;
    margin-bottom: 20px;
}

.about-content p:last-child {
    margin-bottom: 0;
}

.about-content a {
    color: #6c5ce7;
    text-decoration: none;
}

.about-content a:hover {
    text-decoration: underline;
}

.risk-content {
    max-width: 900px;
    margin: 0 auto;
}

.risk-block {
    background: #fff;
    border-radius: 16px;
    padding: 32px;
    margin-bottom: 20px;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
    border-left: 4px solid #e17055;
}

.risk-block:last-child {
    margin-bottom: 0;
}

.risk-block h3 {
    font-size: 18px;
    font-weight: 700;
    color: #1a1a2e;
    margin-bottom: 14px;
}

.risk-block p {
    font-size: 15px;
    color: #555;
    line-height: 1.8;
}

.risk-block a {
    color: #6c5ce7;
    text-decoration: none;
}

.risk-block a:hover {
    text-decoration: underline;
}

.contact-box {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: center;
    background: #fff;
    border-radius: 20px;
    padding: 48px;
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.06);
}

.contact-info h3 {
    font-size: 24px;
    font-weight: 700;
    color: #1a1a2e;
    margin-bottom: 16px;
}

.contact-info > p {
    font-size: 15px;
    color: #555;
    margin-bottom: 20px;
}

.contact-info ul {
    list-style: none;
    margin-bottom: 28px;
}

.contact-info ul li {
    position: relative;
    padding-left: 24px;
    margin-bottom: 12px;
    font-size: 15px;
    color: #444;
}

.contact-info ul li::before {
    content: "";
    position: absolute;
    left: 0;
    top: 8px;
    width: 8px;
    height: 8px;
    background: #6c5ce7;
    border-radius: 50%;
}

.btn-large {
    padding: 18px 48px;
    font-size: 18px;
}

.contact-img {
    border-radius: 16px;
    overflow: hidden;
}

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

footer {
    background: #1a1a2e;
    color: #fff;
    padding: 60px 0 0;
}

.footer-main {
    display: grid;
    grid-template-columns: 1.5fr 2fr;
    gap: 60px;
    padding-bottom: 40px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-brand .logo {
    margin-bottom: 20px;
}

.footer-brand .logo-icon {
    background: linear-gradient(135deg, #a29bfe, #6c5ce7);
}

.footer-brand .logo-text {
    color: #fff;
    background: none;
    -webkit-text-fill-color: #fff;
}

.footer-brand p {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.7;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
}

.footer-col h4 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 20px;
    color: #fff;
}

.footer-col ul {
    list-style: none;
}

.footer-col ul li {
    margin-bottom: 12px;
}

.footer-col ul a {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: color 0.2s;
}

.footer-col ul a:hover {
    color: #a29bfe;
}

.footer-partners {
    padding: 32px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-partners h4 {
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 16px;
    color: rgba(255, 255, 255, 0.8);
}

.partner-links {
    display: flex;
    flex-wrap: wrap;
    gap: 24px;
}

.partner-links a {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.6);
    text-decoration: none;
    transition: color 0.2s;
}

.partner-links a:hover {
    color: #a29bfe;
}

.footer-bottom {
    padding: 24px 0;
    text-align: center;
}

.footer-bottom p {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.5);
}

.chat-float {
    position: fixed;
    right: 24px;
    bottom: 24px;
    background: linear-gradient(135deg, #6c5ce7, #a29bfe);
    color: #fff;
    padding: 14px 24px;
    border-radius: 50px;
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
    box-shadow: 0 4px 20px rgba(108, 92, 231, 0.4);
    transition: transform 0.3s, box-shadow 0.3s;
    z-index: 999;
}

.chat-float:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 28px rgba(108, 92, 231, 0.5);
}

.chat-icon {
    width: 24px;
    height: 24px;
    background: #fff;
    border-radius: 50%;
    position: relative;
}

.chat-icon::before {
    content: "";
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 12px;
    height: 12px;
    border: 2px solid #6c5ce7;
    border-radius: 50%;
}

.chat-icon::after {
    content: "";
    position: absolute;
    bottom: 2px;
    right: 0;
    width: 6px;
    height: 6px;
    background: #fff;
    border-radius: 0 0 6px 0;
}

.chat-text {
    font-size: 15px;
    font-weight: 600;
}

.back-top {
    position: fixed;
    right: 24px;
    bottom: 100px;
    width: 48px;
    height: 48px;
    background: #fff;
    border-radius: 50%;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.1);
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s;
    z-index: 998;
}

.back-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-top:hover {
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
    transform: translateY(-2px);
}

.back-top span {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 12px;
    height: 12px;
    border-left: 2px solid #6c5ce7;
    border-top: 2px solid #6c5ce7;
    transform: translate(-50%, -30%) rotate(45deg);
}

@media (max-width: 1024px) {
    .footer-main {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .contact-box {
        grid-template-columns: 1fr;
    }
    
    .contact-img {
        order: -1;
    }
}

@media (max-width: 768px) {
    .nav-toggle {
        display: flex;
    }
    
    nav {
        position: fixed;
        top: 66px;
        left: 0;
        right: 0;
        background: #fff;
        padding: 20px;
        box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all 0.3s;
    }
    
    nav.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    
    nav ul {
        flex-direction: column;
        gap: 0;
    }
    
    nav ul li {
        border-bottom: 1px solid #eee;
    }
    
    nav ul li:last-child {
        border-bottom: none;
    }
    
    nav a {
        display: block;
        padding: 14px 0;
    }
    
    .hero {
        padding: 120px 0 60px;
    }
    
    .hero h1 {
        font-size: 28px;
    }
    
    .hero-desc {
        font-size: 16px;
    }
    
    .hero-btns {
        flex-direction: column;
        align-items: center;
    }
    
    .btn {
        width: 100%;
        max-width: 280px;
        justify-content: center;
    }
    
    .breadcrumb {
        font-size: 12px;
        padding: 12px 16px;
    }
    
    section {
        padding: 60px 0;
    }
    
    .section-title {
        font-size: 24px;
    }
    
    .section-subtitle {
        font-size: 15px;
    }
    
    .products-grid,
    .guide-grid,
    .news-grid {
        grid-template-columns: 1fr;
    }
    
    .product-card {
        max-width: 100%;
    }
    
    .product-img {
        height: 200px;
    }
    
    .product-info {
        padding: 24px;
    }
    
    .product-info h3 {
        font-size: 20px;
    }
    
    .guide-card {
        padding: 28px 24px;
    }
    
    .guide-number {
        width: 40px;
        height: 40px;
        font-size: 16px;
        top: -10px;
        left: 20px;
    }
    
    .compare-summary {
        padding: 28px 20px;
    }
    
    .summary-cards {
        grid-template-columns: 1fr;
    }
    
    .faq-question {
        font-size: 16px;
        padding: 20px 50px 20px 20px;
    }
    
    .faq-question::after {
        right: 20px;
    }
    
    .faq-item.active .faq-answer {
        padding: 0 20px 20px;
    }
    
    .about-content {
        padding: 32px 24px;
    }
    
    .about-content p {
        font-size: 15px;
    }
    
    .risk-block {
        padding: 24px;
    }
    
    .contact-box {
        padding: 32px 24px;
    }
    
    .contact-info h3 {
        font-size: 20px;
    }
    
    .btn-large {
        padding: 16px 36px;
        font-size: 16px;
    }
    
    .footer-links {
        grid-template-columns: repeat(2, 1fr);
        gap: 28px;
    }
    
    .partner-links {
        flex-direction: column;
        gap: 12px;
    }
    
    .chat-float {
        right: 16px;
        bottom: 16px;
        padding: 12px 20px;
    }
    
    .chat-text {
        font-size: 14px;
    }
    
    .back-top {
        right: 16px;
        bottom: 80px;
        width: 44px;
        height: 44px;
    }
}

@media (max-width: 480px) {
    .header-inner {
        padding: 10px 16px;
    }
    
    .logo-icon {
        width: 36px;
        height: 36px;
        border-radius: 8px;
    }
    
    .logo-text {
        font-size: 18px;
    }
    
    .hero h1 {
        font-size: 24px;
    }
    
    .hero-desc {
        font-size: 15px;
    }
    
    .section-title {
        font-size: 22px;
    }
    
    .footer-links {
        grid-template-columns: 1fr;
    }
    
    .chat-float .chat-text {
        display: none;
    }
    
    .chat-float {
        width: 56px;
        height: 56px;
        padding: 0;
        border-radius: 50%;
        justify-content: center;
    }
    
    .chat-icon {
        width: 28px;
        height: 28px;
    }
}

@media (max-width: 360px) {
    .container {
        padding: 0 16px;
    }
    
    .hero h1 {
        font-size: 22px;
    }
    
    .product-info {
        padding: 20px;
    }
    
    .guide-card {
        padding: 24px 20px;
    }
}