:root {
    --primary-gradient: linear-gradient(135deg, #073090 0%, #022474 100%);
    --primary-color: #073090;
    --primary-dark: #022474;
    --secondary-color: #4CAF50;
    --accent-color: #FF6B35;
    --accent-light: #FF9A76;
    --dark-color: #1a1a2e;
    --light-color: #f8f9ff;
    --gray-color: #666;
    --light-gray: #f5f5f5;
    --border-radius: 12px;
    --shadow: 0 8px 32px rgba(2, 36, 116, 0.15);
    --shadow-hover: 0 15px 45px rgba(2, 36, 116, 0.25);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
}

body {
    line-height: 1.6;
    color: var(--dark-color);
    background-color: white;
    overflow-x: hidden;
}

.container {
    width: 100%;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 40px;
}

/* 头部样式 - 桌面版专用 */
.desktop-header {
    background: white;
    box-shadow: 0 4px 20px rgba(2, 36, 116, 0.1);
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: 0;
    transition: all 0.3s ease;
}

.header-scrolled {
    padding: 5px 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 4px 30px rgba(2, 36, 116, 0.2);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 0;
}

.logo {
    display: flex;
    align-items: center;
    gap: 20px;
}

.logo-icon {
    width: 60px;
    height: 60px;
    background: var(--primary-gradient);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: bold;
    font-size: 28px;
    box-shadow: 0 6px 16px rgba(7, 48, 144, 0.25);
    transition: all 0.3s ease;
}

.logo:hover .logo-icon {
    transform: rotate(15deg);
    box-shadow: 0 8px 24px rgba(7, 48, 144, 0.35);
}

.logo-text {
    display: flex;
    flex-direction: column;
}

.logo-main {
    font-size: 28px;
    font-weight: 700;
    color: var(--dark-color);
    letter-spacing: 0.5px;
}

.logo-sub {
    font-size: 14px;
    color: var(--primary-color);
    margin-top: 4px;
    font-weight: 500;
}

.desktop-nav {
    display: flex;
    align-items: center;
    gap: 50px;
}

.nav-links {
    display: flex;
    gap: 45px;
}

.nav-links a {
    text-decoration: none;
    color: var(--dark-color);
    font-weight: 500;
    font-size: 17px;
    transition: all 0.3s;
    position: relative;
    padding: 8px 0;
}

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

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 3px;
    background: var(--primary-gradient);
    transition: width 0.3s;
    border-radius: 1.5px;
}

.nav-links a:hover::after {
    width: 100%;
}

.nav-buttons {
    display: flex;
    gap: 20px;
}

/* 按钮样式 - 桌面优化 */
.btn {
    padding: 14px 32px;
    border-radius: var(--border-radius);
    font-weight: 600;
    text-decoration: none;
    display: inline-block;
    transition: all 0.3s;
    cursor: pointer;
    border: none;
    font-size: 16px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: var(--primary-gradient);
    color: white;
    box-shadow: 0 6px 20px rgba(7, 48, 144, 0.25);
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.6s;
}

.btn-primary:hover::before {
    left: 100%;
}

.btn-primary:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 28px rgba(7, 48, 144, 0.35);
}

.btn-secondary {
    background: white;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

.btn-secondary:hover {
    background: #f0f5ff;
    transform: translateY(-4px);
    box-shadow: 0 8px 20px rgba(7, 48, 144, 0.15);
}

.btn-accent {
    background: var(--accent-color);
    color: white;
    box-shadow: 0 6px 20px rgba(255, 107, 53, 0.25);
}

.btn-accent:hover {
    background: #FF5722;
    transform: translateY(-4px);
    box-shadow: 0 12px 28px rgba(255, 107, 53, 0.35);
}

/* 英雄区域 - 桌面宽屏设计 */
.hero {
    padding: 180px 0 120px;
    background: linear-gradient(135deg, #f8f9ff 0%, #edf2ff 100%);
    position: relative;
    overflow: hidden;
    margin-top: 80px;
}

.hero-bg {
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    z-index: 0;
}

.bg-element {
    position: absolute;
    border-radius: 50%;
    background: var(--primary-gradient);
    opacity: 0.03;
}

.bg-1 {
    width: 800px;
    height: 800px;
    top: -400px;
    right: -400px;
}

.bg-2 {
    width: 600px;
    height: 600px;
    bottom: -300px;
    left: -300px;
}

.hero-content {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 80px;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-text {
    position: relative;
}

.company-badge {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 10px 24px;
    background: rgba(7, 48, 144, 0.1);
    color: var(--primary-color);
    border-radius: 30px;
    font-size: 15px;
    font-weight: 600;
    margin-bottom: 30px;
    border: 1px solid rgba(7, 48, 144, 0.2);
}

.hero h1 {
    font-size: 52px;
    margin-bottom: 25px;
    color: var(--dark-color);
    line-height: 1.2;
    font-weight: 700;
}

.hero h1 span {
    color: var(--primary-color);
    position: relative;
}

.hero h1 span::after {
    content: '';
    position: absolute;
    bottom: 8px;
    left: 0;
    width: 100%;
    height: 10px;
    background-color: rgba(7, 48, 144, 0.15);
    z-index: -1;
    border-radius: 5px;
}

.hero p {
    font-size: 20px;
    color: var(--gray-color);
    margin-bottom: 40px;
    line-height: 1.7;
    max-width: 700px;
}

.hero-buttons {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}

.hero-visual {
    position: relative;
}

.visual-container {
    position: relative;
    width: 100%;
    height: 480px;
}

.main-visual {
    position: absolute;
    top: 0;
    right: 0;
    width: 380px;
    height: 480px;
    background: white;
    border-radius: 24px;
    box-shadow: var(--shadow);
    border: 1px solid #e8e8e8;
    overflow: hidden;
    z-index: 3;
}

.secondary-visual {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 320px;
    height: 400px;
    background: white;
    border-radius: 20px;
    box-shadow: var(--shadow);
    border: 1px solid #e8e8e8;
    overflow: hidden;
    z-index: 2;
}

.visual-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--primary-gradient);
    opacity: 0.02;
}

.visual-content {
    padding: 30px;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
}

.visual-icon {
    width: 80px;
    height: 80px;
    background: var(--primary-gradient);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 25px;
    color: white;
    font-size: 36px;
}

/* 功能展示区 - 三栏布局 */
.features {
    padding: 120px 0 100px;
    background: white;
    position: relative;
}

.features-bg {
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    background: linear-gradient(135deg, #f8f9ff 0%, #edf2ff 100%);
    clip-path: polygon(0 0, 100% 0, 100% 85%, 0 100%);
    z-index: 0;
}

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

.section-title {
    text-align: center;
    margin-bottom: 80px;
}

.section-title h2 {
    font-size: 42px;
    margin-bottom: 20px;
    color: var(--dark-color);
    position: relative;
    display: inline-block;
    font-weight: 700;
}

.section-title h2::after {
    content: '';
    position: absolute;
    bottom: -12px;
    left: 50%;
    transform: translateX(-50%);
    width: 100px;
    height: 5px;
    background: var(--primary-gradient);
    border-radius: 2.5px;
}

.section-title p {
    color: var(--gray-color);
    font-size: 20px;
    max-width: 800px;
    margin: 30px auto 0;
    line-height: 1.6;
}

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

.feature-card {
    background: white;
    border-radius: var(--border-radius);
    padding: 45px 35px;
    box-shadow: var(--shadow);
    transition: all 0.4s;
    border: 1px solid #f0f0f0;
    position: relative;
    overflow: hidden;
    height: 100%;
    display: flex;
    flex-direction: column;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 5px;
    background: var(--primary-gradient);
    opacity: 0;
    transition: opacity 0.3s;
}

.feature-card:hover {
    transform: translateY(-15px);
    box-shadow: var(--shadow-hover);
    border-color: rgba(7, 48, 144, 0.2);
}

.feature-card:hover::before {
    opacity: 1;
}

.feature-icon {
    width: 90px;
    height: 90px;
    border-radius: 22px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 30px;
    font-size: 40px;
    transition: all 0.4s;
}

.feature-1 .feature-icon {
    background: linear-gradient(135deg, rgba(7, 48, 144, 0.1) 0%, rgba(2, 36, 116, 0.1) 100%);
    color: var(--primary-color);
}

.feature-2 .feature-icon {
    background: linear-gradient(135deg, rgba(255, 107, 53, 0.1) 0%, rgba(255, 87, 34, 0.1) 100%);
    color: var(--accent-color);
}

.feature-3 .feature-icon {
    background: linear-gradient(135deg, rgba(76, 175, 80, 0.1) 0%, rgba(56, 142, 60, 0.1) 100%);
    color: var(--secondary-color);
}

.feature-card:hover .feature-icon {
    transform: scale(1.1) rotate(5deg);
}

.feature-card h3 {
    font-size: 26px;
    margin-bottom: 20px;
    color: var(--dark-color);
    font-weight: 600;
}

.feature-card p {
    color: var(--gray-color);
    margin-bottom: 25px;
    font-size: 17px;
    line-height: 1.7;
    flex-grow: 1;
}

.feature-details {
    margin-top: 25px;
    padding-top: 25px;
    border-top: 1px solid #f0f0f0;
}

.feature-detail-item {
    display: flex;
    align-items: flex-start;
    margin-bottom: 14px;
    color: var(--gray-color);
    font-size: 16px;
}

.feature-detail-item i {
    color: var(--primary-color);
    margin-right: 14px;
    font-style: normal;
    font-weight: bold;
    flex-shrink: 0;
    margin-top: 2px;
    font-size: 18px;
}

/* 产品入口 - 并排展示 */
.product-entries {
    padding: 120px 0;
    background: linear-gradient(135deg, #f0f5ff 0%, #e6eeff 100%);
    position: relative;
    overflow: hidden;
}

.product-bg {
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    opacity: 0.05;
    background-image:
            radial-gradient(circle at 20% 80%, var(--primary-color) 0%, transparent 50%),
            radial-gradient(circle at 80% 20%, var(--accent-color) 0%, transparent 50%);
}

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

.entries-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 40px;
    margin-top: 60px;
}

.product-entry {
    background: white;
    border-radius: var(--border-radius);
    padding: 50px 40px;
    box-shadow: var(--shadow);
    transition: all 0.4s;
    border: 2px solid transparent;
    display: flex;
    flex-direction: column;
    height: 100%;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.product-entry::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--primary-gradient);
    opacity: 0;
    transition: opacity 0.3s;
    z-index: 0;
}

.product-entry:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-hover);
    border-color: var(--primary-color);
}

.product-entry:hover::before {
    opacity: 0.02;
}

.product-entry.featured {
    border-color: var(--primary-color);
    position: relative;
}

.product-entry.featured::after {
    content: '🌟 推荐使用';
    position: absolute;
    top: 25px;
    right: 25px;
    background: var(--primary-color);
    color: white;
    padding: 8px 18px;
    border-radius: 20px;
    font-size: 14px;
    font-weight: 600;
    z-index: 2;
}

.product-icon-container {
    position: relative;
    z-index: 1;
    margin-bottom: 30px;
}

.product-icon {
    width: 120px;
    height: 120px;
    border-radius: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto;
    font-size: 56px;
    transition: all 0.4s;
}

.product-entry.app .product-icon {
    background: linear-gradient(135deg, rgba(7, 48, 144, 0.1) 0%, rgba(2, 36, 116, 0.1) 100%);
    color: var(--primary-color);
    border: 4px solid rgba(7, 48, 144, 0.15);
}

.product-entry.mini-program .product-icon {
    background: linear-gradient(135deg, rgba(7, 193, 96, 0.1) 0%, rgba(6, 174, 86, 0.1) 100%);
    color: #07C160;
    border: 4px solid rgba(7, 193, 96, 0.15);
}

.product-entry:hover .product-icon {
    transform: scale(1.1);
}

.product-title {
    font-size: 32px;
    font-weight: 600;
    margin-bottom: 15px;
    color: var(--dark-color);
    position: relative;
    z-index: 1;
}

.product-subtitle {
    font-size: 18px;
    color: var(--gray-color);
    margin-bottom: 35px;
    position: relative;
    z-index: 1;
}

.product-features {
    flex-grow: 1;
    margin-bottom: 40px;
    text-align: left;
    position: relative;
    z-index: 1;
}

.product-feature {
    display: flex;
    align-items: center;
    margin-bottom: 16px;
    font-size: 17px;
}

.product-feature i {
    margin-right: 14px;
    font-size: 20px;
    color: var(--secondary-color);
    flex-shrink: 0;
}

/* 使用流程 - 水平时间线 */
.workflow {
    padding: 120px 0;
    background: white;
    position: relative;
}

.workflow-steps {
    display: flex;
    justify-content: space-between;
    position: relative;
    margin-top: 80px;
}

.workflow-steps::before {
    content: '';
    position: absolute;
    top: 60px;
    left: 10%;
    width: 80%;
    height: 3px;
    background: linear-gradient(90deg, #f0f0f0 0%, var(--primary-color) 50%, #f0f0f0 100%);
    z-index: 1;
}

.workflow-step {
    flex: 1;
    text-align: center;
    position: relative;
    z-index: 2;
}

.step-container {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.step-icon {
    width: 100px;
    height: 100px;
    background: var(--primary-gradient);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 40px;
    margin-bottom: 30px;
    box-shadow: 0 8px 25px rgba(7, 48, 144, 0.25);
    transition: all 0.3s;
    position: relative;
}

.workflow-step:hover .step-icon {
    transform: scale(1.1);
    box-shadow: 0 12px 35px rgba(7, 48, 144, 0.35);
}

.step-number {
    position: absolute;
    top: -10px;
    right: -10px;
    width: 40px;
    height: 40px;
    background: var(--accent-color);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    font-weight: bold;
    border: 4px solid white;
}

.step-title {
    font-size: 22px;
    font-weight: 600;
    margin-bottom: 15px;
    color: var(--dark-color);
}

.step-desc {
    color: var(--gray-color);
    font-size: 17px;
    max-width: 280px;
    margin: 0 auto;
    line-height: 1.6;
}

/* 合规声明 */
.compliance-section {
    padding: 120px 0;
    background: linear-gradient(135deg, #f8f9ff 0%, #edf2ff 100%);
    position: relative;
}

.compliance-content {
    background: white;
    padding: 60px;
    border-radius: var(--border-radius);
    border-left: 8px solid var(--primary-color);
    box-shadow: var(--shadow);
    position: relative;
    overflow: hidden;
}

.compliance-content::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 200px;
    height: 200px;
    background: var(--primary-gradient);
    opacity: 0.02;
    border-radius: 50%;
    transform: translate(100px, -100px);
}

.compliance-content h3 {
    margin-bottom: 30px;
    color: var(--dark-color);
    font-size: 32px;
    font-weight: 600;
    position: relative;
    z-index: 1;
}

.compliance-list {
    list-style-type: none;
    position: relative;
    z-index: 1;
}

.compliance-list li {
    padding: 18px 0;
    border-bottom: 1px solid #f0f0f0;
    color: var(--gray-color);
    display: flex;
    align-items: flex-start;
    font-size: 17px;
    line-height: 1.7;
}

.compliance-list li:last-child {
    border-bottom: none;
}

.compliance-list li::before {
    content: "•";
    color: var(--primary-color);
    font-weight: bold;
    font-size: 28px;
    margin-right: 18px;
    line-height: 1;
    flex-shrink: 0;
}

/* 页脚 - 四栏布局 */
footer {
    background: var(--dark-color);
    color: white;
    padding: 80px 0 40px;
    position: relative;
    overflow: hidden;
}

.footer-bg {
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    background-image:
            radial-gradient(circle at 10% 10%, rgba(7, 48, 144, 0.2) 0%, transparent 40%),
            radial-gradient(circle at 90% 90%, rgba(255, 107, 53, 0.1) 0%, transparent 40%);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 50px;
    margin-bottom: 50px;
    position: relative;
    z-index: 1;
}

.footer-column h4 {
    margin-bottom: 30px;
    font-size: 20px;
    color: white;
    font-weight: 600;
    position: relative;
    padding-bottom: 12px;
}

.footer-column h4::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 50px;
    height: 3px;
    background: var(--primary-gradient);
    border-radius: 1.5px;
}

.footer-column p {
    color: #bbb;
    margin-bottom: 25px;
    line-height: 1.7;
    font-size: 16px;
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.footer-links a {
    color: #bbb;
    text-decoration: none;
    transition: all 0.3s;
    font-size: 16px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.footer-links a:hover {
    color: white;
    transform: translateX(5px);
}

.footer-links a i {
    width: 20px;
    text-align: center;
    font-size: 14px;
}

.contact-info {
    color: #bbb;
    font-size: 16px;
}

.contact-info div {
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.contact-info i {
    width: 24px;
    text-align: center;
    font-size: 16px;
    color: var(--primary-color);
}

.copyright {
    text-align: center;
    padding-top: 40px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: #888;
    font-size: 15px;
    position: relative;
    z-index: 1;
}

/* 桌面专用响应式 */
@media (max-width: 1200px) {
    .container {
        padding: 0 30px;
    }

    .hero-content {
        gap: 60px;
    }

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

    .workflow-steps::before {
        width: 70%;
        left: 15%;
    }
}

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

    .hero p {
        margin: 0 auto;
    }

    .hero-buttons {
        justify-content: center;
    }

    .visual-container {
        height: 400px;
        margin-top: 40px;
    }

    .main-visual {
        position: relative;
        margin: 0 auto;
    }

    .secondary-visual {
        display: none;
    }

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

@media (max-width: 768px) {
    .desktop-nav {
        display: none;
    }

    .hero h1 {
        font-size: 42px;
    }

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

    .workflow-steps {
        flex-direction: column;
        gap: 40px;
    }

    .workflow-steps::before {
        display: none;
    }
}

/* 移动设备隐藏 */
@media (max-width: 480px) {
    .desktop-header {
        display: none;
    }
}