:root {
    --color-primary: #e0e5ec;
    --color-secondary: #ffffff;
    --color-accent: #5a67d8;
    --color-accent-hover: #4c51bf;
    --color-success: #22C55E;
    --color-wechat: #07C160;
    --color-text-primary: #1E293B;
    --color-text-secondary: #64748B;
    --color-border: #E2E8F0;
    --shadow-light: #ffffff;
    --shadow-dark: #b8bec7;
    --shadow凸起: 8px 8px 16px var(--shadow-dark), -8px -8px 16px var(--shadow-light);
    --shadow凸起增强: 12px 12px 24px var(--shadow-dark), -12px -12px 24px var(--shadow-light);
    --shadow凹陷: inset 6px 6px 12px var(--shadow-dark), inset -6px -6px 12px var(--shadow-light);
    --radius-card: 16px;
    --radius-btn: 12px;
    --transition: all 0.3s ease;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background-color: var(--color-primary);
    color: var(--color-text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.3;
    color: var(--color-text-primary);
}

h1 { font-size: 48px; font-weight: 700; }
h2 { font-size: 36px; }
h3 { font-size: 24px; }
h4 { font-size: 20px; }

p { font-size: 16px; line-height: 1.7; }

a {
    text-decoration: none;
    color: inherit;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

.section-title {
    font-size: 32px;
    margin-bottom: 40px;
    color: var(--color-text-primary);
}

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

section {
    padding: 80px 0;
}

.navbar {
    background-color: var(--color-primary);
    box-shadow: var(--shadow凸起);
    padding: 15px 0;
    z-index: 1000;
    transition: var(--transition);
}

.navbar .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.navbar-brand {
    font-size: 24px;
    font-weight: 700;
    color: var(--color-text-primary) !important;
}

.navbar-nav {
    display: flex;
    align-items: center;
    list-style: none;
    margin: 0;
    padding: 0;
}

.navbar-nav .nav-link {
    color: var(--color-text-secondary) !important;
    padding: 10px 15px !important;
    transition: var(--transition);
}

.navbar-nav .nav-link:hover {
    color: var(--color-accent) !important;
}

.btn-cta-nav {
    background: var(--color-accent);
    color: white !important;
    padding: 10px 20px !important;
    border-radius: var(--radius-btn);
    box-shadow: var(--shadow凸起);
    transition: var(--transition);
    margin-left: 10px;
}

.btn-cta-nav:hover {
    background: var(--color-accent-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow凸起增强);
}

.btn-cta-nav:active {
    box-shadow: var(--shadow凹陷);
    transform: translateY(0);
}

.top-notice {
    background: linear-gradient(135deg, var(--color-accent) 0%, #667eea 100%);
    color: white;
    padding: 10px 0;
    margin-top: 70px;
    position: relative;
    z-index: 999;
}

.notice-content {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.notice-icon {
    font-size: 18px;
}

.notice-text {
    font-size: 14px;
}

.notice-close {
    position: absolute;
    right: 20px;
    background: none;
    border: none;
    color: white;
    font-size: 20px;
    cursor: pointer;
    opacity: 0.8;
    transition: var(--transition);
}

.notice-close:hover {
    opacity: 1;
    transform: scale(1.1);
}

.hero-section {
    padding: 120px 0 80px;
    background: linear-gradient(135deg, var(--color-primary) 0%, #d4d9e0 100%);
    min-height: 80vh;
    display: flex;
    align-items: center;
}

.hero-content {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.hero-title {
    font-size: 48px;
    margin-bottom: 20px;
    animation: fadeInUp 0.6s ease-out;
}

.hero-subtitle {
    font-size: 24px;
    color: var(--color-text-secondary);
    margin-bottom: 30px;
    animation: fadeInUp 0.6s ease-out 0.2s both;
}

.hero-tags {
    display: flex;
    justify-content: center;
    gap: 15px;
    flex-wrap: wrap;
    margin-bottom: 40px;
    animation: fadeInUp 0.6s ease-out 0.4s both;
}

.tag {
    background: var(--color-primary);
    padding: 10px 20px;
    border-radius: 30px;
    box-shadow: var(--shadow凸起);
    font-size: 14px;
    color: var(--color-text-secondary);
}

.btn-cta-hero {
    display: inline-block;
    background: linear-gradient(135deg, var(--color-accent) 0%, #667eea 100%);
    color: white;
    padding: 18px 40px;
    font-size: 18px;
    font-weight: 600;
    border-radius: var(--radius-btn);
    box-shadow: var(--shadow凸起);
    transition: var(--transition);
    animation: fadeInUp 0.6s ease-out 0.6s both;
}

.btn-cta-hero:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow凸起增强);
    color: white;
}

.btn-cta-hero:active {
    box-shadow: var(--shadow凹陷);
    transform: translateY(0);
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 30px;
    margin-top: 60px;
    flex-wrap: wrap;
}

.stat-card {
    background: var(--color-primary);
    padding: 25px 40px;
    border-radius: var(--radius-card);
    box-shadow: var(--shadow凸起);
    text-align: center;
    transition: var(--transition);
}

.stat-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow凸起增强);
}

.stat-number {
    display: block;
    font-size: 42px;
    font-weight: 700;
    color: var(--color-accent);
    line-height: 1;
}

.stat-label {
    display: block;
    font-size: 14px;
    color: var(--color-text-secondary);
    margin-top: 8px;
}

.marquee-section {
    background: var(--color-primary);
    padding: 40px 0;
    box-shadow: var(--shadow凸起);
}

.marquee-wrapper {
    overflow: hidden;
    white-space: nowrap;
}

.marquee-content {
    display: inline-block;
    animation: marquee 20s linear infinite;
}

.marquee-item {
    display: inline-block;
    padding: 15px 30px;
    margin: 0 10px;
    background: var(--color-primary);
    border-radius: var(--radius-btn);
    box-shadow: var(--shadow凸起);
    color: var(--color-text-secondary);
    font-size: 14px;
}

.marquee-content:hover {
    animation-play-state: paused;
}

@keyframes marquee {
    0% { transform: translateX(0); }
    100% { transform: translateX(-50%); }
}

.trust-section {
    background: var(--color-primary);
}

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

.trust-card {
    background: var(--color-primary);
    padding: 40px 20px;
    border-radius: var(--radius-card);
    box-shadow: var(--shadow凸起);
    text-align: center;
    transition: var(--transition);
}

.trust-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow凸起增强);
}

.trust-icon {
    width: 70px;
    height: 70px;
    background: var(--color-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    box-shadow: var(--shadow凹陷);
}

.trust-icon i {
    font-size: 28px;
    color: var(--color-accent);
}

.trust-card h3 {
    font-size: 18px;
    margin-bottom: 10px;
}

.trust-card p {
    font-size: 14px;
    color: var(--color-text-secondary);
}

.cases-section {
    background: linear-gradient(135deg, var(--color-primary) 0%, #d4d9e0 100%);
}

.cases-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.case-card {
    background: var(--color-primary);
    padding: 30px;
    border-radius: var(--radius-card);
    box-shadow: var(--shadow凸起);
    transition: var(--transition);
}

.case-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow凸起增强);
}

.case-header {
    display: flex;
    gap: 10px;
    margin-bottom: 15px;
    flex-wrap: wrap;
}

.case-user {
    font-weight: 600;
    color: var(--color-text-primary);
}

.case-location, .case-phone {
    font-size: 14px;
    color: var(--color-text-secondary);
}

.case-rating {
    color: #fbbf24;
    margin-bottom: 15px;
}

.case-comment {
    font-style: italic;
    color: var(--color-text-primary);
    margin-bottom: 15px;
}

.case-info {
    display: flex;
    justify-content: space-between;
    font-size: 14px;
    color: var(--color-text-secondary);
}

.products-section {
    background: var(--color-primary);
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.product-card {
    background: var(--color-primary);
    padding: 30px;
    border-radius: var(--radius-card);
    box-shadow: var(--shadow凸起);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
}

.product-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow凸起增强);
}

.product-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.product-header h3 {
    font-size: 20px;
}

.product-badge {
    background: var(--color-accent);
    color: white;
    padding: 5px 12px;
    border-radius: 20px;
    font-size: 12px;
}

.product-amount {
    font-size: 32px;
    font-weight: 700;
    color: var(--color-accent);
    margin-bottom: 15px;
}

.product-desc {
    color: var(--color-text-secondary);
    margin-bottom: 15px;
    flex-grow: 1;
}

.btn-toggle-details {
    background: none;
    border: none;
    color: var(--color-accent);
    cursor: pointer;
    font-size: 14px;
    margin-bottom: 15px;
    text-align: left;
    padding: 0;
    transition: var(--transition);
}

.btn-toggle-details:hover {
    color: var(--color-accent-hover);
}

.product-details {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.product-details p {
    font-size: 14px;
    color: var(--color-text-secondary);
    padding: 15px 0;
    border-top: 1px solid var(--color-border);
}

.product-details.show {
    max-height: 200px;
}

.btn-apply {
    display: block;
    width: 100%;
    background: var(--color-accent);
    color: white;
    padding: 15px;
    text-align: center;
    border-radius: var(--radius-btn);
    font-weight: 600;
    box-shadow: var(--shadow凸起);
    transition: var(--transition);
    margin-top: 15px;
}

.btn-apply:hover {
    background: var(--color-accent-hover);
    color: white;
    transform: translateY(-2px);
    box-shadow: var(--shadow凸起增强);
}

.process-section {
    background: linear-gradient(135deg, var(--color-primary) 0%, #d4d9e0 100%);
}

.process-steps {
    display: flex;
    justify-content: space-between;
    gap: 30px;
    flex-wrap: wrap;
}

.process-step {
    flex: 1;
    min-width: 200px;
    text-align: center;
    position: relative;
}

.step-number {
    width: 70px;
    height: 70px;
    background: var(--color-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    font-size: 28px;
    font-weight: 700;
    color: var(--color-accent);
    box-shadow: var(--shadow凸起);
}

.process-step h3 {
    font-size: 18px;
    margin-bottom: 10px;
}

.process-step p {
    font-size: 14px;
    color: var(--color-text-secondary);
}

.security-section {
    background: var(--color-primary);
}

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

.security-card {
    background: var(--color-primary);
    padding: 40px 20px;
    border-radius: var(--radius-card);
    box-shadow: var(--shadow凸起);
    text-align: center;
    transition: var(--transition);
}

.security-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow凸起增强);
}

.security-icon {
    width: 70px;
    height: 70px;
    background: var(--color-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    box-shadow: var(--shadow凹陷);
}

.security-icon i {
    font-size: 28px;
    color: var(--color-success);
}

.security-card h3 {
    font-size: 18px;
    margin-bottom: 10px;
}

.security-card p {
    font-size: 14px;
    color: var(--color-text-secondary);
}

.faq-section {
    background: linear-gradient(135deg, var(--color-primary) 0%, #d4d9e0 100%);
}

.faq-container {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background: var(--color-primary);
    border-radius: var(--radius-card);
    box-shadow: var(--shadow凸起);
    margin-bottom: 20px;
    overflow: hidden;
}

.faq-question {
    padding: 20px 25px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    transition: var(--transition);
}

.faq-question:hover {
    background: rgba(90, 103, 216, 0.05);
}

.faq-question span {
    font-weight: 600;
    color: var(--color-text-primary);
}

.faq-question i {
    color: var(--color-accent);
    transition: var(--transition);
}

.faq-item.active .faq-question i {
    transform: rotate(180deg);
}

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

.faq-answer p {
    padding: 0 25px 20px;
    color: var(--color-text-secondary);
    font-size: 15px;
}

.faq-item.active .faq-answer {
    max-height: 300px;
}

.about-section {
    background: var(--color-primary);
}

.about-content {
    display: flex;
    gap: 50px;
    align-items: center;
    max-width: 1000px;
    margin: 0 auto;
}

.about-logo {
    width: 150px;
    height: 150px;
    background: var(--color-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow凸起);
    flex-shrink: 0;
}

.about-logo i {
    font-size: 60px;
    color: var(--color-text-primary);
}

.about-text h3 {
    margin-bottom: 20px;
}

.about-text p {
    color: var(--color-text-secondary);
    margin-bottom: 15px;
}

.about-features {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
    margin-top: 20px;
}

.about-features span {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    color: var(--color-success);
}

.contact-section {
    background: linear-gradient(135deg, var(--color-primary) 0%, #d4d9e0 100%);
}

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

.contact-card {
    background: var(--color-primary);
    padding: 40px 20px;
    border-radius: var(--radius-card);
    box-shadow: var(--shadow凸起);
    text-align: center;
    transition: var(--transition);
}

.contact-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow凸起增强);
}

.contact-icon {
    width: 70px;
    height: 70px;
    background: var(--color-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    box-shadow: var(--shadow凹陷);
}

.contact-icon i {
    font-size: 28px;
    color: var(--color-wechat);
}

.contact-card h3 {
    font-size: 18px;
    margin-bottom: 15px;
}

.contact-card p {
    font-size: 14px;
    color: var(--color-text-secondary);
    margin-bottom: 20px;
}

.btn-contact {
    display: inline-block;
    background: var(--color-accent);
    color: white;
    padding: 12px 25px;
    border-radius: var(--radius-btn);
    font-weight: 600;
    box-shadow: var(--shadow凸起);
    transition: var(--transition);
}

.btn-contact:hover {
    background: var(--color-accent-hover);
    color: white;
    transform: translateY(-2px);
    box-shadow: var(--shadow凸起增强);
}

.site-footer {
    background: var(--color-primary);
    padding: 50px 0 30px;
    box-shadow: 0 -5px 20px rgba(0,0,0,0.05);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
    margin-bottom: 30px;
}

.footer-section h4 {
    font-size: 16px;
    margin-bottom: 15px;
    color: var(--color-text-primary);
}

.footer-section p {
    font-size: 14px;
    color: var(--color-text-secondary);
    margin-bottom: 8px;
}

.footer-section a {
    color: var(--color-text-secondary);
    transition: var(--transition);
}

.footer-section a:hover {
    color: var(--color-accent);
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid var(--color-border);
}

.footer-bottom p {
    font-size: 14px;
    color: var(--color-text-secondary);
}

.mobile-fixed-cta {
    display: none;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(135deg, var(--color-accent) 0%, #667eea 100%);
    padding: 15px;
    z-index: 1000;
    box-shadow: 0 -5px 20px rgba(0,0,0,0.1);
}

.btn-mobile-cta {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    width: 100%;
    background: none;
    color: white;
    font-size: 16px;
    font-weight: 600;
}

.btn-mobile-cta:hover {
    color: white;
}

.back-to-top {
    position: fixed;
    bottom: 20px;
    right: 20px;
    width: 48px;
    height: 48px;
    background: var(--color-primary);
    border: none;
    border-radius: 50%;
    box-shadow: var(--shadow凸起);
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 999;
}

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

.back-to-top:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow凸起增强);
}

.back-to-top i {
    color: var(--color-accent);
    font-size: 18px;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@media (max-width: 991px) {
    .navbar-collapse {
        background: var(--color-primary);
        padding: 20px;
        border-radius: var(--radius-card);
        box-shadow: var(--shadow凸起);
        margin-top: 15px;
    }

    .hero-title {
        font-size: 36px;
    }

    .hero-subtitle {
        font-size: 20px;
    }

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

    .about-content {
        flex-direction: column;
        text-align: center;
    }

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

@media (max-width: 767px) {
    h1 { font-size: 32px; }
    h2 { font-size: 28px; }
    h3 { font-size: 20px; }

    section {
        padding: 50px 0;
    }

    .hero-section {
        padding: 100px 0 50px;
        min-height: auto;
    }

    .hero-title {
        font-size: 28px;
    }

    .hero-subtitle {
        font-size: 16px;
    }

    .hero-tags {
        gap: 10px;
    }

    .tag {
        padding: 8px 15px;
        font-size: 12px;
    }

    .btn-cta-hero {
        padding: 15px 30px;
        font-size: 16px;
    }

    .hero-stats {
        gap: 15px;
    }

    .stat-card {
        padding: 20px 30px;
    }

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

    .trust-grid,
    .products-grid,
    .security-grid,
    .cases-grid,
    .contact-grid {
        grid-template-columns: 1fr;
    }

    .process-steps {
        flex-direction: column;
        gap: 20px;
    }

    .about-features {
        justify-content: center;
    }

    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .mobile-fixed-cta {
        display: block;
    }

    .site-footer {
        padding-bottom: 80px;
    }

    .back-to-top {
        bottom: 80px;
    }

    .faq-question {
        padding: 15px 20px;
    }

    .faq-question span {
        font-size: 14px;
    }
}

@media (max-width: 575px) {
    .notice-text {
        font-size: 12px;
    }

    .container {
        padding: 0 10px;
    }
}