/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --prediama-primary: #1a365d;
    --prediama-secondary: #2d3748;
    --prediama-accent: #d69e2e;
    --prediama-light: #f7fafc;
    --prediama-white: #ffffff;
    --prediama-gray-100: #f7fafc;
    --prediama-gray-200: #edf2f7;
    --prediama-gray-300: #e2e8f0;
    --prediama-gray-600: #718096;
    --prediama-gray-800: #2d3748;
    --prediama-blue-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --prediama-hero-gradient: linear-gradient(135deg, #1a365d 0%, #2d3748 50%, #4a5568 100%);
    --prediama-card-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    --prediama-hover-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
    --prediama-border-radius: 12px;
    --prediama-transition: all 0.3s ease;
    --prediama-max-width: 1200px;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--prediama-gray-800);
    background-color: var(--prediama-white);
    overflow-x: hidden;
}

.prediama-container {
    max-width: var(--prediama-max-width);
    margin: 0 auto;
    padding: 0 2rem;
}

/* Header & Navigation */
.prediama-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--prediama-gray-200);
    z-index: 1000;
    transition: var(--prediama-transition);
}

.prediama-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
    max-width: var(--prediama-max-width);
    margin: 0 auto;
}

.prediama-company-name {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--prediama-primary);
    letter-spacing: 0.5px;
}

.prediama-nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.prediama-nav-menu a {
    text-decoration: none;
    color: var(--prediama-gray-600);
    font-weight: 500;
    transition: var(--prediama-transition);
    position: relative;
}

.prediama-nav-menu a:hover,
.prediama-nav-active {
    color: var(--prediama-primary) !important;
}

.prediama-nav-menu a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--prediama-accent);
    transition: var(--prediama-transition);
}

.prediama-nav-menu a:hover::after,
.prediama-nav-active::after {
    width: 100%;
}

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

.prediama-nav-toggle span {
    width: 25px;
    height: 3px;
    background: var(--prediama-primary);
    transition: var(--prediama-transition);
}

/* Main Content */
.prediama-main {
    margin-top: 80px;
}

/* Hero Section */
.prediama-hero {
    position: relative;
    background: var(--prediama-hero-gradient);
    color: var(--prediama-white);
    padding: 6rem 0;
    overflow: hidden;
}

.prediama-hero-decoration {
    position: absolute;
    top: -50%;
    right: -20%;
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, rgba(214, 158, 46, 0.1) 0%, transparent 70%);
    border-radius: 50%;
}

.prediama-hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    max-width: var(--prediama-max-width);
    margin: 0 auto;
    padding: 0 2rem;
    position: relative;
    z-index: 1;
}

.prediama-hero-title {
    font-size: 3rem;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1.5rem;
}

.prediama-hero-subtitle {
    font-size: 1.25rem;
    line-height: 1.8;
    margin-bottom: 2rem;
    opacity: 0.95;
}

.prediama-hero-buttons {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.prediama-btn-primary,
.prediama-btn-secondary {
    display: inline-block;
    padding: 1rem 2rem;
    border-radius: 50px;
    font-weight: 600;
    text-decoration: none;
    transition: var(--prediama-transition);
    cursor: pointer;
    border: 2px solid transparent;
}

.prediama-btn-primary {
    background: var(--prediama-accent);
    color: var(--prediama-primary);
}

.prediama-btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(214, 158, 46, 0.3);
}

.prediama-btn-secondary {
    background: transparent;
    color: var(--prediama-white);
    border-color: var(--prediama-white);
}

.prediama-btn-secondary:hover {
    background: var(--prediama-white);
    color: var(--prediama-primary);
}

.prediama-hero-visual img {
    width: 80%;
    max-width: 500px;
    height: auto;
    border-radius: var(--prediama-border-radius);
    box-shadow: var(--prediama-card-shadow);
    margin: 0 auto;
    display: block;
}

/* Services Overview Section */
.prediama-services-overview {
    padding: 5rem 0;
    background: var(--prediama-white);
}

.prediama-services-overview:nth-of-type(even) {
    background: var(--prediama-gray-100);
}

.prediama-section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.prediama-section-title {
    font-size: 2.5rem;
    color: var(--prediama-primary);
    margin-bottom: 1rem;
    font-weight: 700;
}

.prediama-section-subtitle {
    font-size: 1.25rem;
    color: var(--prediama-gray-600);
}

/* Services Grid */
.prediama-services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.prediama-service-card {
    background: var(--prediama-white);
    padding: 2.5rem;
    border-radius: var(--prediama-border-radius);
    box-shadow: var(--prediama-card-shadow);
    transition: var(--prediama-transition);
    text-align: center;
}

.prediama-service-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--prediama-hover-shadow);
}

.prediama-service-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 1.5rem;
    display: block;
}

.prediama-service-title {
    font-size: 1.5rem;
    color: var(--prediama-primary);
    margin-bottom: 1rem;
    font-weight: 600;
}

.prediama-service-description {
    color: var(--prediama-gray-600);
    line-height: 1.8;
}

/* Stats Grid */
.prediama-stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.prediama-stat-card {
    background: var(--prediama-white);
    padding: 2.5rem;
    border-radius: var(--prediama-border-radius);
    box-shadow: var(--prediama-card-shadow);
    text-align: center;
    transition: var(--prediama-transition);
}

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

.prediama-stat-number {
    font-size: 3rem;
    font-weight: 700;
    color: var(--prediama-accent);
    margin-bottom: 1rem;
}

.prediama-stat-label {
    font-size: 1.25rem;
    color: var(--prediama-primary);
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.prediama-stat-description {
    color: var(--prediama-gray-600);
    line-height: 1.6;
}

.prediama-stat-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

/* About Text */
.prediama-about-text {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
    padding: 2rem;
}

.prediama-about-text p {
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--prediama-gray-600);
}

/* Mission Section */
.prediama-about-mission {
    padding: 5rem 0;
    background: var(--prediama-gray-100);
}

.prediama-mission-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.prediama-mission-title {
    font-size: 2.5rem;
    color: var(--prediama-primary);
    margin-bottom: 1.5rem;
    font-weight: 700;
}

.prediama-mission-description {
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--prediama-gray-600);
    margin-bottom: 2rem;
}

.prediama-mission-features {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.prediama-mission-feature {
    display: flex;
    gap: 1rem;
    align-items: flex-start;
}

.prediama-feature-icon {
    width: 30px;
    height: 30px;
    background: var(--prediama-accent);
    color: var(--prediama-white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    flex-shrink: 0;
}

.prediama-feature-text {
    flex: 1;
    line-height: 1.8;
    color: var(--prediama-gray-600);
}

.prediama-feature-text strong {
    color: var(--prediama-primary);
}

.prediama-feature-text a {
    color: var(--prediama-primary);
    text-decoration: none;
    font-weight: 600;
}

.prediama-feature-text a:hover {
    text-decoration: underline;
}

.prediama-mission-visual img {
    width: 80%;
    max-width: 400px;
    height: auto;
    border-radius: var(--prediama-border-radius);
    box-shadow: var(--prediama-card-shadow);
    margin: 0 auto;
    display: block;
}

/* CTA Section */
.prediama-cta {
    padding: 5rem 0;
    background: var(--prediama-blue-gradient);
    color: var(--prediama-white);
    text-align: center;
}

.prediama-cta-title {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    font-weight: 700;
}

.prediama-cta-description {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    opacity: 0.95;
}

.prediama-cta-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* Footer */
.prediama-footer {
    background: var(--prediama-primary);
    color: var(--prediama-white);
    padding: 4rem 0 2rem;
}

.prediama-footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 3rem;
    margin-bottom: 3rem;
}

.prediama-footer-section h4 {
    font-size: 1.1rem;
    margin-bottom: 1rem;
    color: var(--prediama-white);
    font-weight: 600;
}

.prediama-footer-section p {
    line-height: 1.8;
    opacity: 0.9;
}

.prediama-footer-section ul {
    list-style: none;
}

.prediama-footer-section ul li {
    margin-bottom: 0.75rem;
}

.prediama-footer-section ul li a {
    color: var(--prediama-white);
    text-decoration: none;
    opacity: 0.9;
    transition: var(--prediama-transition);
}

.prediama-footer-section ul li a:hover {
    opacity: 1;
    color: var(--prediama-accent);
}

.prediama-footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    opacity: 0.8;
}

/* Footer Unified Style - 与首页保持一致 */
.footer {
    background-color: #1a365d;
    color: #ffffff;
    padding: 3rem 0 1rem;
}

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

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h4 {
    color: #d69e2e;
    margin-bottom: 1rem;
    font-size: 1.2rem;
    font-weight: 600;
}

.footer-section p {
    opacity: 0.8;
    line-height: 1.6;
    margin-bottom: 0;
}

.footer-section ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer-section ul li {
    margin-bottom: 0.5rem;
}

.footer-section ul li a {
    color: #cbd5e0;
    text-decoration: none;
    transition: color 0.3s ease;
    font-size: 0.95rem;
}

.footer-section ul li a:hover {
    color: #d69e2e;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 2rem;
    text-align: center;
    margin-top: 0;
}

.footer-bottom p {
    opacity: 0.8;
    margin: 0;
    font-size: 0.9rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    .prediama-nav-menu {
        display: none;
    }

    .prediama-nav-toggle {
        display: flex;
    }

    .prediama-hero-content {
        grid-template-columns: 1fr;
        gap: 2rem;
        padding: 0 1rem;
    }

    .prediama-hero-title {
        font-size: 1.8rem;
        line-height: 1.3;
    }

    .prediama-hero-subtitle {
        font-size: 1rem;
        line-height: 1.5;
    }

    .prediama-hero-visual img {
        width: 100%;
        max-width: 100%;
    }

    .prediama-hero-buttons {
        flex-direction: column;
        gap: 0.75rem;
    }

    .prediama-btn-primary,
    .prediama-btn-secondary {
        width: 100%;
        text-align: center;
        padding: 0.875rem 1.5rem;
    }

    .prediama-mission-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .prediama-mission-visual img {
        width: 100%;
        max-width: 100%;
    }

    .prediama-services-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .prediama-stats-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .prediama-section-title {
        font-size: 1.75rem;
        line-height: 1.3;
    }

    .prediama-section-subtitle {
        font-size: 1rem;
    }

    .prediama-container {
        padding: 0 1rem;
    }

    .prediama-hero {
        padding: 3rem 0 2rem;
    }

    .prediama-services-overview,
    .prediama-about-mission {
        padding: 2.5rem 0;
    }

    .prediama-service-card,
    .prediama-stat-card {
        padding: 1.5rem;
    }

    .prediama-mission-title {
        font-size: 1.75rem;
    }

    .prediama-mission-description {
        font-size: 1rem;
    }

    .prediama-cta-title {
        font-size: 1.75rem;
    }

    .prediama-cta-description {
        font-size: 1rem;
    }

    .prediama-cta-buttons {
        flex-direction: column;
        gap: 0.75rem;
        padding: 0 1rem;
    }

    /* Footer 响应式 */
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .container {
        padding: 0 1rem;
    }

    /* 表格和文本适配 */
    .prediama-about-text p {
        font-size: 0.95rem;
        padding: 0 0.5rem;
    }

    .prediama-stat-description a {
        word-break: break-all;
        font-size: 0.9rem;
    }
}

@media (max-width: 480px) {
    .prediama-hero-title {
        font-size: 1.5rem;
    }

    .prediama-hero-subtitle {
        font-size: 0.95rem;
    }

    .prediama-service-card,
    .prediama-stat-card {
        padding: 1.25rem;
    }

    .prediama-section-title {
        font-size: 1.5rem;
    }

    .prediama-section-subtitle {
        font-size: 0.9rem;
    }

    .prediama-btn-primary,
    .prediama-btn-secondary {
        padding: 0.75rem 1.25rem;
        font-size: 0.95rem;
    }

    .prediama-service-title,
    .prediama-stat-label {
        font-size: 1.1rem;
    }

    .prediama-service-description,
    .prediama-stat-description {
        font-size: 0.9rem;
    }

    .prediama-mission-title {
        font-size: 1.5rem;
    }

    .prediama-mission-description {
        font-size: 0.9rem;
    }

    .prediama-feature-text {
        font-size: 0.9rem;
    }

    .prediama-cta-title {
        font-size: 1.5rem;
    }

    .prediama-cta-description {
        font-size: 0.95rem;
    }

    .prediama-about-text p {
        font-size: 0.9rem;
    }

    /* 移动端公司名称缩短 */
    .prediama-company-name {
        font-size: 0.85rem;
        line-height: 1.3;
    }

    .prediama-nav {
        padding: 0.75rem 1rem;
    }
}