/* 全局样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #1890ff;
    --primary-dark: #096dd9;
    --secondary-color: #52c41a;
    --text-color: #333;
    --text-light: #666;
    --text-lighter: #999;
    --bg-color: #fff;
    --bg-light: #f5f5f5;
    --border-color: #e8e8e8;
    --shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    --shadow-hover: 0 4px 16px rgba(0, 0, 0, 0.15);
    --transition: all 0.3s ease;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    color: var(--text-color);
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.section {
    padding: 80px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-title {
    font-size: 36px;
    font-weight: 600;
    color: var(--text-color);
    margin-bottom: 16px;
}

.section-subtitle {
    font-size: 18px;
    color: var(--text-light);
}

.bg-light {
    background-color: var(--bg-light);
}

.bg-primary {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: #fff;
}

/* 导航栏 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    z-index: 1000;
    transition: var(--transition);
}

.nav-wrapper {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 0;
}

.logo a {
    font-size: 24px;
    font-weight: 700;
    color: var(--primary-color);
    text-decoration: none;
    transition: var(--transition);
}

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

.nav-menu {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-link {
    color: var(--text-color);
    text-decoration: none;
    font-size: 16px;
    font-weight: 500;
    transition: var(--transition);
    position: relative;
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary-color);
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--primary-color);
}

.nav-link.btn-primary {
    background: var(--primary-color);
    color: #fff;
    padding: 8px 24px;
    border-radius: 4px;
}

.nav-link.btn-primary:hover {
    background: var(--primary-dark);
    color: #fff;
}

/* 导航：进入系统下拉（/apsApp、/apsWeb；点击或键盘焦点展开） */
.nav-dropdown {
    position: relative;
}

.nav-dropdown-toggle {
    border: none;
    cursor: pointer;
    font-family: inherit;
    font-size: 15px;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    border-radius: 8px;
    box-shadow: 0 1px 2px rgba(15, 23, 42, 0.08);
    outline: none;
    transition: background 0.2s ease, box-shadow 0.2s ease, transform 0.15s ease;
}

.nav-dropdown-toggle:hover {
    box-shadow: 0 2px 8px rgba(24, 144, 255, 0.35);
}

.nav-dropdown-toggle:focus-visible {
    box-shadow: 0 0 0 3px rgba(24, 144, 255, 0.45), 0 2px 8px rgba(24, 144, 255, 0.25);
}

.nav-dropdown-toggle::after {
    content: "";
    width: 0;
    height: 0;
    margin-left: 2px;
    border-left: 5px solid transparent;
    border-right: 5px solid transparent;
    border-top: 6px solid currentColor;
    opacity: 0.88;
    transition: transform 0.22s ease;
    transform-origin: 50% 40%;
}

.nav-dropdown.is-open .nav-dropdown-toggle::after,
.nav-dropdown:focus-within .nav-dropdown-toggle::after {
    transform: rotate(180deg);
}

.nav-dropdown-panel {
    position: absolute;
    top: calc(100% + 10px);
    right: 0;
    min-width: 248px;
    padding: 6px;
    background: #fff;
    border-radius: 12px;
    border: 1px solid rgba(15, 23, 42, 0.08);
    box-shadow:
        0 4px 6px -1px rgba(15, 23, 42, 0.06),
        0 16px 40px -8px rgba(15, 23, 42, 0.14);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px) scale(0.98);
    transform-origin: top right;
    transition:
        opacity 0.2s ease,
        transform 0.22s cubic-bezier(0.16, 1, 0.3, 1),
        visibility 0.2s;
    z-index: 1001;
}

.nav-dropdown.is-open .nav-dropdown-panel,
.nav-dropdown:focus-within .nav-dropdown-panel {
    opacity: 1;
    visibility: visible;
    transform: translateY(0) scale(1);
}

.nav-dropdown-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 11px 12px;
    border-radius: 8px;
    color: var(--text-color);
    text-decoration: none;
    font-size: 14px;
    font-weight: 600;
    line-height: 1.35;
    white-space: nowrap;
    transition: background 0.15s ease, color 0.15s ease, box-shadow 0.15s ease;
}

.nav-dropdown-item::before {
    content: "";
    flex-shrink: 0;
    width: 40px;
    height: 40px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 19px;
    line-height: 1;
}

.nav-dropdown-item:first-child::before {
    content: "📱";
    background: linear-gradient(145deg, #e0f2fe 0%, #7dd3fc 100%);
}

.nav-dropdown-item:last-child::before {
    content: "🖥";
    background: linear-gradient(145deg, #ede9fe 0%, #a5b4fc 100%);
}

.nav-dropdown-item:hover {
    background: #f8fafc;
    color: var(--primary-color);
}

.nav-dropdown-item:active {
    background: #f1f5f9;
}

.nav-dropdown-item:focus-visible {
    outline: none;
    box-shadow: inset 0 0 0 2px rgba(24, 144, 255, 0.45);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    cursor: pointer;
}

.nav-toggle span {
    width: 24px;
    height: 2px;
    background: var(--text-color);
    transition: var(--transition);
}

/* 英雄区域 */
.hero {
    position: relative;
    min-height: 600px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-top: 70px;
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    z-index: -1;
}

.hero-background::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg width="100" height="100" xmlns="http://www.w3.org/2000/svg"><defs><pattern id="grid" width="100" height="100" patternUnits="userSpaceOnUse"><path d="M 100 0 L 0 0 0 100" fill="none" stroke="rgba(255,255,255,0.1)" stroke-width="1"/></pattern></defs><rect width="100%" height="100%" fill="url(%23grid)"/></svg>');
    opacity: 0.3;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.3);
}

.hero-content {
    text-align: center;
    color: #fff;
    z-index: 1;
    max-width: 800px;
    padding: 0 20px;
}

.hero-title {
    font-size: 48px;
    font-weight: 700;
    margin-bottom: 24px;
    animation: fadeInUp 0.8s ease;
}

.hero-subtitle {
    font-size: 20px;
    margin-bottom: 40px;
    opacity: 0.95;
    animation: fadeInUp 1s ease;
}

.hero-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    justify-content: center;
    animation: fadeInUp 1.2s ease;
}

/* 按钮样式 */
.btn {
    display: inline-block;
    padding: 12px 32px;
    font-size: 16px;
    font-weight: 500;
    text-decoration: none;
    border-radius: 4px;
    transition: var(--transition);
    cursor: pointer;
    border: none;
}

.btn-primary {
    background: var(--primary-color);
    color: #fff;
}

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

.btn-outline {
    background: transparent;
    color: #fff;
    border: 2px solid #fff;
}

.btn-outline:hover {
    background: #fff;
    color: var(--primary-color);
}

.btn-light {
    background: #fff;
    color: var(--primary-color);
}

.btn-light:hover {
    background: var(--bg-light);
}

.btn-outline-light {
    background: transparent;
    color: #fff;
    border: 2px solid #fff;
}

.btn-outline-light:hover {
    background: rgba(255, 255, 255, 0.2);
}

/* 产品卡片 */
.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 32px;
    margin-top: 40px;
}

.product-card {
    background: #fff;
    padding: 40px;
    border-radius: 8px;
    box-shadow: var(--shadow);
    transition: var(--transition);
    text-align: center;
}

.product-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-hover);
}

.product-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 24px;
    color: var(--primary-color);
}

.product-icon svg {
    width: 100%;
    height: 100%;
}

.product-title {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 16px;
    color: var(--text-color);
}

.product-desc {
    color: var(--text-light);
    margin-bottom: 24px;
    line-height: 1.8;
}

.product-link {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
}

.product-link:hover {
    color: var(--primary-dark);
}

/* 功能特性 */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 32px;
    margin-top: 40px;
}

.feature-item,
.feature-card {
    background: #fff;
    padding: 32px;
    border-radius: 8px;
    text-align: center;
    transition: var(--transition);
}

.feature-item:hover,
.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow);
}

.feature-icon {
    font-size: 48px;
    margin-bottom: 16px;
}

.feature-title {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--text-color);
}

.feature-desc {
    color: var(--text-light);
    line-height: 1.8;
}

/* 应用场景 */
.scenarios-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 32px;
    margin-top: 40px;
}

.scenario-card {
    background: #fff;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.scenario-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-hover);
}

.scenario-image {
    height: 200px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    display: flex;
    align-items: center;
    justify-content: center;
}

.scenario-placeholder {
    font-size: 64px;
}

.scenario-title {
    font-size: 22px;
    font-weight: 600;
    margin: 24px 24px 12px;
    color: var(--text-color);
}

.scenario-desc {
    color: var(--text-light);
    margin: 0 24px 24px;
    line-height: 1.8;
}

/* CTA区域 */
.cta {
    text-align: center;
}

.cta-content {
    max-width: 800px;
    margin: 0 auto;
}

.cta-title {
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 16px;
}

.cta-subtitle {
    font-size: 18px;
    margin-bottom: 40px;
    opacity: 0.9;
}

.cta-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    justify-content: center;
}

/* 页脚 */
.footer {
    background: #1a1a1a;
    color: #fff;
    padding: 60px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-title {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 20px;
}

.footer-links {
    list-style: none;
}

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

.footer-links a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: var(--transition);
}

.footer-links a:hover {
    color: #fff;
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.6);
}

/* 页面头部 */
.page-header {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: #fff;
    padding: 120px 0 80px;
    margin-top: 70px;
    text-align: center;
}

.page-title {
    font-size: 42px;
    font-weight: 700;
    margin-bottom: 16px;
}

.page-subtitle {
    font-size: 20px;
    opacity: 0.9;
}

/* 内容网格 */
.content-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.content-text h2 {
    font-size: 32px;
    font-weight: 600;
    margin-bottom: 24px;
    color: var(--text-color);
}

.content-text p {
    font-size: 16px;
    color: var(--text-light);
    line-height: 1.8;
    margin-bottom: 16px;
}

.content-image {
    min-height: 400px;
    background: var(--bg-light);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    overflow: hidden;
}

.content-image .aps-diagram {
    width: 100%;
    max-width: 800px;
    height: auto;
    border-radius: 8px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    background: white;
}

.content-image .aps-diagram:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.12);
}

.content-image-old {
    height: 300px;
    background: var(--bg-light);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.image-placeholder {
    font-size: 48px;
    color: var(--text-lighter);
}

/* 优势列表 */
.advantages-list {
    max-width: 900px;
    margin: 0 auto;
}

.advantage-item {
    display: flex;
    gap: 32px;
    margin-bottom: 40px;
    align-items: flex-start;
}

.advantage-number {
    font-size: 48px;
    font-weight: 700;
    color: var(--primary-color);
    min-width: 80px;
    opacity: 0.3;
}

.advantage-content h3 {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--text-color);
}

.advantage-content p {
    color: var(--text-light);
    line-height: 1.8;
}

/* 价值网格 */
.value-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 32px;
    margin-top: 40px;
}

.value-item {
    background: #fff;
    padding: 32px;
    border-radius: 8px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.value-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover);
}

.value-icon {
    font-size: 48px;
    margin-bottom: 16px;
}

.value-item h3 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--text-color);
}

.value-item p {
    color: var(--text-light);
    line-height: 1.8;
}

/* 流程 */
.process-flow {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: 20px;
    margin-top: 40px;
}

.process-step {
    text-align: center;
    max-width: 150px;
}

.process-number {
    width: 60px;
    height: 60px;
    background: var(--primary-color);
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    font-weight: 700;
    margin: 0 auto 16px;
}

.process-step h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text-color);
}

.process-step p {
    font-size: 14px;
    color: var(--text-light);
    line-height: 1.6;
}

.process-arrow {
    font-size: 24px;
    color: var(--primary-color);
    font-weight: 700;
}

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

/* 响应式设计 */
@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 70px);
        background: #fff;
        flex-direction: column;
        padding: 40px 20px;
        box-shadow: var(--shadow);
        transition: var(--transition);
    }

    .nav-menu.active {
        left: 0;
    }

    .nav-dropdown {
        width: 100%;
        max-width: 320px;
    }

    .nav-dropdown-panel {
        position: static;
        top: auto;
        right: auto;
        transform: none;
        transform-origin: top center;
        margin-top: 12px;
        min-width: 0;
        width: 100%;
        max-width: 320px;
        display: none;
        opacity: 1;
        visibility: visible;
        box-shadow:
            0 4px 6px -1px rgba(15, 23, 42, 0.06),
            0 12px 28px -6px rgba(15, 23, 42, 0.12);
        border: 1px solid rgba(15, 23, 42, 0.08);
    }

    .nav-dropdown.is-open .nav-dropdown-panel,
    .nav-dropdown:focus-within .nav-dropdown-panel {
        display: block;
        transform: none;
    }

    .nav-toggle {
        display: flex;
    }

    .hero-title {
        font-size: 32px;
    }

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

    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }

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

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

    .section {
        padding: 60px 0;
    }

    .products-grid,
    .features-grid,
    .scenarios-grid,
    .value-grid {
        grid-template-columns: 1fr;
    }

    .content-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .advantage-item {
        flex-direction: column;
        gap: 16px;
    }

    .advantage-number {
        min-width: auto;
    }

    .process-flow {
        flex-direction: column;
    }

    .process-arrow {
        transform: rotate(90deg);
    }

    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }

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

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }

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

    .page-title {
        font-size: 32px;
    }

    .section-title {
        font-size: 24px;
    }

    .product-card,
    .feature-item,
    .feature-card {
        padding: 24px;
    }
}