/* 基础重置和变量 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #1a4d8f;
    --secondary-color: #2c6bb8;
    --accent-color: #d4af37;
    --text-dark: #1a1a1a;
    --text-light: #666666;
    --bg-light: #f8f9fa;
    --white: #ffffff;
    --shadow: 0 2px 20px rgba(0, 0, 0, 0.08);
    --shadow-hover: 0 4px 30px rgba(0, 0, 0, 0.12);
    --transition: all 0.3s ease;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", "PingFang SC", "Hiragino Sans GB", sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

/* 导航栏 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: var(--white);
    box-shadow: var(--shadow);
    z-index: 1000;
    transition: var(--transition);
}

.navbar.scrolled {
    box-shadow: 0 2px 30px rgba(0, 0, 0, 0.15);
}

.nav-wrapper {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
}

.logo {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.logo-img {
    height: 45px;
    width: 45px;
    object-fit: contain;
}

.logo h1 {
    font-size: 1.5rem;
    color: var(--primary-color);
    font-weight: 700;
    letter-spacing: 1px;
}

.nav-menu {
    display: flex;
    gap: 2rem;
}

.nav-link {
    text-decoration: none;
    color: var(--text-dark);
    font-weight: 500;
    position: relative;
    transition: var(--transition);
    padding: 0.5rem 0;
}

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

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

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: var(--primary-color);
    transition: var(--transition);
    border-radius: 2px;
}

/* 主视觉区 */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #1a4d8f 0%, #2c6bb8 50%, #3d7fc4 100%);
    overflow: hidden;
    margin-top: 70px;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 50%, rgba(212, 175, 55, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(255, 255, 255, 0.05) 0%, transparent 50%);
}

.hero-overlay {
    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="50" height="50" patternUnits="userSpaceOnUse"><path d="M 50 0 L 0 0 0 50" fill="none" stroke="rgba(255,255,255,0.03)" stroke-width="1"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
}

.hero-content {
    position: relative;
    text-align: center;
    color: var(--white);
    z-index: 1;
    animation: fadeInUp 1s ease;
}

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

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    letter-spacing: 2px;
}

.hero-subtitle {
    font-size: 1.3rem;
    margin-bottom: 3rem;
    opacity: 0.9;
    font-weight: 300;
}

.hero-stats {
    display: flex;
    gap: 4rem;
    justify-content: center;
    margin-bottom: 3rem;
}

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

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--accent-color);
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 1rem;
    opacity: 0.9;
}

.cta-button {
    display: inline-block;
    padding: 1rem 3rem;
    background: var(--accent-color);
    color: var(--white);
    text-decoration: none;
    border-radius: 50px;
    font-weight: 600;
    transition: var(--transition);
    box-shadow: 0 4px 15px rgba(212, 175, 55, 0.3);
}

.cta-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 25px rgba(212, 175, 55, 0.4);
}

/* 通用区块样式 */
.intro-section,
.business-section,
.shareholders-section {
    padding: 6rem 0;
}

.intro-section {
    background: var(--white);
}

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

.shareholders-section {
    background: var(--white);
}

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

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

.title-underline {
    width: 60px;
    height: 4px;
    background: var(--accent-color);
    margin: 0 auto;
    border-radius: 2px;
}

/* 公司简介 */
.intro-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: 3rem;
}

.intro-text p {
    font-size: 1.1rem;
    line-height: 2;
    color: var(--text-light);
    margin-bottom: 1.5rem;
    text-align: justify;
}

.intro-features {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-top: 2rem;
}

.feature-card {
    background: var(--white);
    padding: 2.5rem 2rem;
    border-radius: 12px;
    box-shadow: var(--shadow);
    text-align: center;
    transition: var(--transition);
}

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

.feature-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto 1.5rem;
    color: var(--primary-color);
}

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

.feature-card h3 {
    font-size: 1.3rem;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

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

/* 业务领域 */
.business-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
}

.business-card {
    background: var(--white);
    padding: 3rem;
    border-radius: 12px;
    box-shadow: var(--shadow);
    border-left: 4px solid var(--primary-color);
    transition: var(--transition);
}

.business-card:hover {
    border-left-color: var(--accent-color);
    transform: translateX(10px);
    box-shadow: var(--shadow-hover);
}

.business-card h3 {
    font-size: 1.5rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

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

/* 股东结构 */
.shareholders-content {
    max-width: 900px;
    margin: 0 auto;
}

.shareholder-item {
    margin-bottom: 2.5rem;
    background: var(--white);
    padding: 2rem;
    border-radius: 12px;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.shareholder-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
}

.shareholder-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.shareholder-name {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-dark);
}

.shareholder-percentage {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--accent-color);
}

.shareholder-bar-container {
    width: 100%;
    height: 12px;
    background: #e8e8e8;
    border-radius: 10px;
    overflow: hidden;
    position: relative;
}

.shareholder-bar-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    border-radius: 10px;
    transition: width 1s ease;
    box-shadow: 0 2px 8px rgba(26, 77, 143, 0.3);
}

/* 联系CTA */
.contact-cta {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    padding: 5rem 0;
    text-align: center;
    color: var(--white);
}

.contact-cta h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.contact-cta p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

/* 页脚 */
.footer {
    background: #1a1a1a;
    color: #999;
    padding: 4rem 0 2rem;
}

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

.footer-section h3,
.footer-section h4 {
    color: var(--white);
    margin-bottom: 1.5rem;
}

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

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

.footer-section ul li {
    margin-bottom: 0.8rem;
}

.footer-section ul li a {
    color: #999;
    text-decoration: none;
    transition: var(--transition);
}

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

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid #333;
}

/* 响应式设计 - 平板 */
@media (max-width: 992px) {
    .hero-title {
        font-size: 2.5rem;
    }

    .hero-stats {
        gap: 2rem;
    }

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

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

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

/* 响应式设计 - 手机 */
@media (max-width: 768px) {
    .logo-img {
        height: 35px;
        width: 35px;
    }

    .logo h1 {
        font-size: 1.2rem;
    }

    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 70px);
        background: var(--white);
        flex-direction: column;
        gap: 0;
        padding: 2rem;
        transition: var(--transition);
        box-shadow: var(--shadow);
    }

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

    .nav-link {
        padding: 1rem 0;
        width: 100%;
        text-align: center;
        border-bottom: 1px solid #eee;
    }

    .hamburger {
        display: flex;
    }

    .hamburger.active span:nth-child(1) {
        transform: rotate(45deg) translate(8px, 8px);
    }

    .hamburger.active span:nth-child(2) {
        opacity: 0;
    }

    .hamburger.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -7px);
    }

    .hero {
        margin-top: 70px;
        padding: 2rem 1rem;
    }

    .hero-title {
        font-size: 2rem;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

    .hero-stats {
        flex-direction: column;
        gap: 2rem;
    }

    .section-title {
        font-size: 1.8rem;
    }

    .intro-text p {
        font-size: 1rem;
    }

    .feature-card,
    .business-card {
        padding: 2rem 1.5rem;
    }

    .shareholder-item {
        padding: 1.5rem;
    }

    .shareholder-name {
        font-size: 1rem;
    }

    .shareholder-percentage {
        font-size: 1.5rem;
    }

    .contact-cta h2 {
        font-size: 1.8rem;
    }

    .contact-cta p {
        font-size: 1rem;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }

    .hero-title {
        font-size: 1.5rem;
    }

    .stat-number {
        font-size: 2rem;
    }

    .cta-button {
        padding: 0.8rem 2rem;
        font-size: 0.9rem;
    }
}

/* 备案信息样式 */
.footer-credentials {
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid #333;
    text-align: center;
}

.footer-credentials p {
    color: #999;
    font-size: 0.85rem;
    line-height: 1.5;
}

.footer-credentials a {
    color: #999 !important; /* 强制使用灰色 */
    text-decoration: none;
    transition: var(--transition);
}

.footer-credentials a:hover {
    color: var(--accent-color) !important; /* 悬停时使用主题色 */
}

.footer-credentials img {
    width: 16px;
    height: 16px;
    vertical-align: middle;
    margin-right: 4px;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .footer-credentials p {
        font-size: 0.75rem;
    }
    
    .footer-credentials img {
        width: 14px;
        height: 14px;
    }
}

/* 更具体的备案信息样式 */
.footer .footer-bottom .footer-credentials p a {
    color: #999 !important;
    text-decoration: none !important;
}

.footer .footer-bottom .footer-credentials p a:hover {
    color: var(--accent-color) !important;
    text-decoration: underline !important;
}