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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 
                 'Microsoft YaHei', 'Helvetica Neue', Helvetica, Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f5f5f5;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    background: white;
}

/* 头部导航 */
.main-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 50px;
    background: white;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    position: sticky;
    top: 0;
    z-index: 1000;
    animation: slideDown 0.5s ease;
}

@keyframes slideDown {
    from {
        transform: translateY(-100%);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-icon {
    width: 45px;
    height: 45px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    font-size: 16px;
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
}

.logo-text {
    font-size: 20px;
    font-weight: 700;
    color: #333;
}

.main-header nav {
    display: flex;
    gap: 30px;
}

.main-header nav a {
    text-decoration: none;
    color: #666;
    font-size: 16px;
    transition: all 0.3s;
    padding: 8px 16px;
    border-radius: 8px;
    position: relative;
}

.main-header nav a:hover {
    color: #667eea;
    background: rgba(102, 126, 234, 0.1);
}

.main-header nav a.active {
    color: #667eea;
    font-weight: 600;
}

.main-header nav a.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 16px;
    right: 16px;
    height: 2px;
    background: linear-gradient(90deg, #667eea, #764ba2);
}

/* Hero区域 */
.hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 120px 50px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    overflow: hidden;
}

.floating-shape {
    position: absolute;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    animation: float 20s infinite ease-in-out;
}

.shape-1 {
    width: 300px;
    height: 300px;
    top: -100px;
    left: -100px;
    animation-delay: 0s;
}

.shape-2 {
    width: 200px;
    height: 200px;
    top: 50%;
    right: -50px;
    animation-delay: 5s;
}

.shape-3 {
    width: 150px;
    height: 150px;
    bottom: -50px;
    left: 30%;
    animation-delay: 10s;
}

@keyframes float {
    0%, 100% {
        transform: translate(0, 0) rotate(0deg);
    }
    33% {
        transform: translate(30px, -30px) rotate(120deg);
    }
    66% {
        transform: translate(-20px, 20px) rotate(240deg);
    }
}

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

.hero-badge {
    display: inline-block;
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    padding: 8px 20px;
    border-radius: 20px;
    font-size: 14px;
    margin-bottom: 20px;
    animation: fadeInUp 0.8s ease 0.2s both;
}

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

.hero-title {
    font-size: 52px;
    margin-bottom: 20px;
    font-weight: 700;
    line-height: 1.2;
    animation: fadeInUp 0.8s ease 0.4s both;
}

.gradient-text {
    background: linear-gradient(90deg, #fff, #ffd700);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.subtitle {
    font-size: 20px;
    margin-bottom: 30px;
    opacity: 0.95;
    animation: fadeInUp 0.8s ease 0.6s both;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 50px;
    margin-bottom: 40px;
    animation: fadeInUp 0.8s ease 0.8s both;
}

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

.stat-number {
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 5px;
    color: #ffd700;
}

.stat-label {
    font-size: 14px;
    opacity: 0.9;
}

.cta-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    animation: fadeInUp 0.8s ease 1s both;
}

.btn {
    padding: 15px 40px;
    font-size: 18px;
    border-radius: 30px;
    text-decoration: none;
    transition: all 0.3s;
    font-weight: 600;
    border: none;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.btn-large {
    padding: 18px 50px;
    font-size: 20px;
}

.btn-primary {
    background: white;
    color: #667eea;
    box-shadow: 0 4px 15px rgba(0,0,0,0.2);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.3);
}

.pulse {
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% {
        box-shadow: 0 4px 15px rgba(255,255,255,0.3);
    }
    50% {
        box-shadow: 0 4px 25px rgba(255,255,255,0.6);
    }
}

.btn-secondary {
    background: transparent;
    color: white;
    border: 2px solid white;
}

.btn-secondary:hover {
    background: white;
    color: #667eea;
}

/* 价值主张区域 */
.value-props {
    padding: 80px 50px;
    background: #f8f9fa;
}

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

.section-header h2 {
    font-size: 36px;
    color: #333;
    margin-bottom: 15px;
}

.section-subtitle {
    font-size: 18px;
    color: #666;
}

.value-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    max-width: 1200px;
    margin: 0 auto;
}

.value-card {
    background: white;
    padding: 35px;
    border-radius: 15px;
    text-align: center;
    transition: all 0.3s;
    border: 2px solid transparent;
}

.value-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(0,0,0,0.1);
    border-color: #667eea;
}

.value-icon {
    font-size: 50px;
    margin-bottom: 20px;
    display: block;
}

.value-card h3 {
    font-size: 22px;
    margin-bottom: 15px;
    color: #333;
}

.value-card p {
    color: #666;
    line-height: 1.8;
    margin-bottom: 15px;
}

.value-badge {
    display: inline-block;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 13px;
    font-weight: 600;
}

/* 维度展示区域 */
.assessment-dimensions {
    padding: 80px 50px;
    background: white;
}

.dimensions-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 25px;
    max-width: 1200px;
    margin: 0 auto;
}

.dimension-item {
    background: #f8f9fa;
    padding: 30px 20px;
    border-radius: 12px;
    text-align: center;
    transition: all 0.3s;
    border: 2px solid transparent;
}

.dimension-item:hover {
    transform: translateY(-5px);
    border-color: #667eea;
    box-shadow: 0 10px 30px rgba(102, 126, 234, 0.2);
}

.dimension-label {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    font-weight: 700;
    margin: 0 auto 15px;
}

.dimension-item h3 {
    font-size: 18px;
    color: #333;
    margin-bottom: 8px;
}

.dimension-item p {
    font-size: 14px;
    color: #666;
    line-height: 1.6;
}

/* 报告预览区域 */
.report-preview {
    padding: 80px 50px;
    background: #f8f9fa;
}

.preview-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 40px;
    max-width: 1000px;
    margin: 0 auto;
}

.preview-card {
    background: white;
    border-radius: 15px;
    overflow: hidden;
    transition: all 0.3s;
    box-shadow: 0 5px 20px rgba(0,0,0,0.08);
}

.preview-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(0,0,0,0.15);
}

.preview-image {
    height: 250px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.preview-placeholder {
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: white;
}

.preview-icon {
    font-size: 60px;
    margin-bottom: 15px;
}

.preview-placeholder p {
    font-size: 18px;
    font-weight: 600;
}

.preview-card h3 {
    font-size: 20px;
    color: #333;
    margin: 20px 25px 10px;
}

.preview-card > p {
    color: #666;
    margin: 0 25px 20px;
    line-height: 1.6;
}

.preview-link {
    display: block;
    text-align: center;
    padding: 15px;
    background: #f8f9fa;
    color: #667eea;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s;
}

.preview-link:hover {
    background: #667eea;
    color: white;
}

/* CTA区域 */
.cta-section {
    padding: 100px 50px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    text-align: center;
    color: white;
}

.cta-content h2 {
    font-size: 40px;
    margin-bottom: 20px;
}

.cta-content > p {
    font-size: 20px;
    margin-bottom: 40px;
    opacity: 0.95;
}

.cta-note {
    margin-top: 20px;
    font-size: 16px;
    opacity: 0.9;
}

/* 优势区域 */
.benefits {
    padding: 80px 50px;
    background: #f8f9fa;
}

.benefits h2 {
    text-align: center;
    font-size: 36px;
    margin-bottom: 60px;
    color: #333;
}

.benefits-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    max-width: 1200px;
    margin: 0 auto;
}

.benefit-item {
    background: white;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
}

.benefit-number {
    display: inline-block;
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border-radius: 50%;
    text-align: center;
    line-height: 50px;
    font-size: 20px;
    font-weight: bold;
    margin-bottom: 20px;
}

.benefit-item h3 {
    font-size: 20px;
    margin-bottom: 10px;
    color: #333;
}

.benefit-item p {
    color: #666;
    line-height: 1.8;
}

/* 页脚 */
.main-footer {
    background: #2c3e50;
    color: white;
    padding: 50px 50px 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    max-width: 1200px;
    margin: 0 auto 30px;
}

.footer-section h3 {
    margin-bottom: 15px;
    font-size: 20px;
}

.footer-section p {
    margin-bottom: 10px;
    opacity: 0.8;
    line-height: 1.6;
}

.footer-highlight {
    color: #ffd700;
    font-weight: 600;
}

.footer-link {
    display: block;
    color: white;
    text-decoration: none;
    opacity: 0.8;
    margin-bottom: 10px;
    transition: all 0.3s;
}

.footer-link:hover {
    opacity: 1;
    padding-left: 5px;
}

/* 页脚二维码样式 */
.footer-qrcode {
    margin-top: 15px;
    text-align: center;
}

.footer-qrcode .qrcode-img {
    width: 120px;
    height: 120px;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    margin-bottom: 8px;
}

.footer-qrcode .qrcode-label {
    font-size: 13px;
    color: #cbd5e0;
    margin: 0;
}

.qr-placeholder-small {
    width: 100px;
    height: 100px;
    background: white;
    border-radius: 8px;
    margin-top: 15px;
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid rgba(255,255,255,0.1);
    opacity: 0.7;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .main-header {
        padding: 15px 20px;
    }

    .logo-icon {
        width: 38px;
        height: 38px;
        font-size: 14px;
    }

    .logo-text {
        font-size: 18px;
    }

    .main-header nav {
        gap: 15px;
        font-size: 14px;
    }

    .main-header nav a {
        padding: 6px 12px;
    }

    .hero {
        padding: 80px 20px;
    }

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

    .subtitle {
        font-size: 16px;
    }

    .hero-stats {
        flex-direction: column;
        gap: 20px;
    }

    .stat-number {
        font-size: 28px;
    }

    .cta-buttons {
        flex-direction: column;
        width: 100%;
    }

    .btn {
        width: 100%;
        padding: 12px 30px;
        font-size: 16px;
    }

    .value-props,
    .assessment-dimensions,
    .report-preview,
    .cta-section {
        padding: 50px 20px;
    }

    .section-header h2 {
        font-size: 28px;
    }

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

    .value-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .dimensions-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 15px;
    }

    .dimension-item {
        padding: 20px 15px;
    }

    .preview-grid {
        grid-template-columns: 1fr;
    }

    .cta-content h2 {
        font-size: 28px;
    }

    .cta-content > p {
        font-size: 18px;
    }

    .main-footer {
        padding: 40px 20px 20px;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: 30px;
    }
}

/* 小屏幕手机优化 */
@media (max-width: 480px) {
    .hero-content h1 {
        font-size: 24px;
    }

    .subtitle {
        font-size: 14px;
    }

    .features h2,
    .benefits h2 {
        font-size: 24px;
    }

    .feature-card {
        padding: 25px 15px;
    }

    .btn {
        padding: 10px 25px;
        font-size: 15px;
    }
}