* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #072f84;
    --secondary-color: #e10010; 
    --accent-color: #4299e1;
    --light-color: #f7fafc;
    --dark-color: #2d3748;
    --text-color: #4a5568;
    --border-color: #e2e8f0;

    --marginX:120px;
    --marginB:50px;
}
a{ text-decoration:none;}
body {
    font-family: 'Microsoft YaHei', 'PingFang SC', Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color:#fff;
}

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

/* Header */
header {
    background: #fff;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
    transition: all 0.3s ease;
}

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

.logo {
    font-size: 24px;
    font-weight: bold;
    color: var(--primary-color);
    text-decoration: none;
    display: flex;
    align-items: center;
}
.logo img{height:64px}

.logo i {
    margin-right: 10px;
    font-size: 28px;
    color: var(--accent-color);
}

nav ul {
    display: flex;
    list-style: none;
}

nav ul li {
    margin-left: 40px;
    position: relative;
}

nav ul li a {
    text-decoration: none;
    color: var(--dark-color);
    font-weight: 500; font-size:20px;
    transition: color 0.3s ease;
    padding: 10px 0;
    display: block;
}

nav ul li > a:hover {
    color: var(--accent-color);
}

nav ul li:hover .submenu {
    display: block;
}

.submenu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    background: #fff;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    padding: 10px 0;
    min-width: 180px;
    border-radius: 4px;
    z-index: 1001;
}

.submenu li {
    margin: 0;
}

.submenu li a {
    padding:8px 20px;
    font-size: 16px;
}

.submenu li a:hover {
    background: var(--light-color);
}

.tagline {
    background: var(--primary-color);
    color: white;
    padding: 15px 0; letter-spacing:8px;
    text-align: center;
    font-size: 18px;
    font-weight: 500;
}

/* Hero Section */
.hero {
    background: linear-gradient(rgba(26, 54, 93, 0.25), rgba(0, 17, 146, 0.7)), 
    url('../img/banner.jpg');
    background-size: cover;
    background-position: center;
    color: white;
    padding: 150px 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(45deg, rgba(43, 108, 176, 0.3), rgba(66, 153, 225, 0.3));
    animation: gradientShift 15s ease infinite;
}
.hero.about{
    background: linear-gradient(rgba(26, 54, 93, 0.1), rgba(0, 17, 146, 0.75)), 
    url('../img/about-b.jpg'); 
    background-size: cover;
    background-position: center;
}
.hero.busi{
    background: linear-gradient(rgba(26, 54, 93, 0.1), rgba(0, 17, 146, 0.75)), 
    url('../img/busi.jpg'); 
    background-size: cover;
    background-position: center;
}
.hero.cont{
    background: linear-gradient(rgba(26, 54, 93, 0.1), rgba(0, 17, 146, 0.75)), 
    url('../img/cont.jpg'); 
    background-size: cover;
    background-position: center;
}

@keyframes gradientShift {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

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

.hero h1 {
    font-size: 56px;
    margin-bottom: 20px;
    font-weight: bold;
    animation: fadeInUp 1s ease-out;
}

.hero p {
    font-size: 24px;
    margin-bottom: 40px;
    opacity: 0.9;
    animation: fadeInUp 1s ease-out 0.2s both;
}

.btn {
    display: inline-block;
    padding: 15px 30px; font-size:16px;
    background: var(--accent-color);
    color: white;
    text-decoration: none;
    border-radius: 50px;
    font-weight: 500;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    animation: fadeInUp 1s ease-out 0.4s both;
}

.btn:hover {
    background: var(--secondary-color);
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(66, 153, 225, 0.3);
}

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

/* Section Styles */
.section-title {
    text-align: center;
    font-size: 36px;
    margin-bottom: 20px;
    color: var(--primary-color);
    position: relative;
}
.section-title::before{
    content:attr(data-name); font-size:90px;line-height:100px;
    position: absolute;
    transform: translate(-50%, -60%);
    left: 50%;
    position: absolute;
    top: 50%;
    z-index: -1;
    text-transform: uppercase;
    font-weight: 700; font-family: Times New Roman;
    color: var(--primary-color);  opacity:0.07;
}
/*.business .section-title::before{color:#fff; opacity:1;}*/
.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px; border-radius:4px;
    background:linear-gradient(to right,var(--primary-color),var(--accent-color));
}

.section-subtitle {
    text-align: center;
    font-size: 16px;
    color: var(--text-color);
    margin-bottom: var(--marginB,40px);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* About Section */
.about {
    padding: var(--marginX,100px) 0;
    background: #fff;
}

.about-content {
    display: flex;
    align-items: center;
    gap: var(--marginB,40px);
}

.about-text {
    flex: 1;
}

.about-text h3 {
    font-size: 24px;
    margin-bottom: 20px;
    color: var(--primary-color);
}

.about-text p {
    font-size: 16px;
    line-height: 1.8;
    margin-bottom: 20px;
}

.about-image {
    flex: 1;
}

.about-image img {
    width: 100%;/*
    border-radius: 10px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);*/
}

/* Values Section */
.values {
    padding: 100px 0;
    background: var(--light-color);
}

.values-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
    margin-top: var(--marginB,40px);
}

.value-item {
    background: #fff;
    padding: 40px;
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.05);
    text-align: center;
    transition: all 0.3s ease;
}

.value-item:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0,0,0,0.1);
}

.value-item i {
    font-size: 48px;
    color: var(--accent-color);
    margin-bottom: 20px;
}

.value-item h3 {
    font-size: 22px;
    margin-bottom: 15px;
    color: var(--primary-color);
}

.value-item p {
    font-size: 14px;
    line-height: 1.6;
}

/* Business Section */
.business {
    padding: var(--marginX,100px) 0;
    background: var(--light-color);
}

.business-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
    margin-top: var(--marginB,40px);
}

.business-item {
    background: #fff;
    padding: 40px;
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.05);
    transition: all 0.3s ease;
    border-top: 4px solid var(--accent-color);
}

.business-item:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0,0,0,0.1);
}

.business-item h3 {
    font-size: 24px;
    margin-bottom: 20px;
    color: var(--primary-color);
    display: flex;
    align-items: center;
}

.business-item h3 i {
    margin-right: 10px;
    color: var(--accent-color);
}

.business-item ul {
    list-style: none;
}

.business-item ul li {
    margin-top:10px;
    padding-left: 25px;
    position: relative;
    font-size: 16px;
}

.business-item ul li:before {
    content: "\f00c";
    position: absolute;
    left: 0;  font-family:'Font Awesome 5 Pro';
    color: var(--accent-color);
    font-weight: bold;
}

/* Investment Philosophy */
.philosophy {
    padding: 100px 0;
    background: linear-gradient(rgba(26, 54, 93, 0.5), rgba(0, 17, 146, 0.88)), 
    url('../img/tzbg.jpg');
    color: white;
}

.philosophy-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.philosophy h2 {
    color: white;
}

.philosophy h2::after {
    background: var(--accent-color);
}

.philosophy p {
    font-size: 18px;
    line-height: 1.8;
    margin-bottom: 40px;
}

/* Contact Section */
.contact {
    padding: var(--marginX,100px) 0;
    background: var(--light-color);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--marginB,40px);
    margin-top: var(--marginB,40px);
}

.contact-info {
    background: #fff;
    padding: 40px;
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.05);
}

.contact-info h3 {
    font-size: 24px;
    margin-bottom: 30px;
    color: var(--primary-color);
    display: flex;
    align-items: center;
}

.contact-info h3 i {
    margin-right: 10px;
    color: var(--accent-color);
}

.contact-item {
    display: flex;
    align-items: flex-start;
    margin-bottom: 20px;
}

.contact-item i {
    font-size: 20px;
    color: var(--accent-color);
    margin-right: 15px;
    margin-top: 5px;
}

.contact-item .info {
    flex: 1;
}

.contact-item .info h4 {
    font-size: 16px;
    margin-bottom: 5px;
    color: var(--primary-color);
}

.contact-item .info p {
    font-size: 14px;
    color: var(--text-color);
}

.contact-form {
    background: #fff;
    padding:24px 40px;
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.05);
}

.contact-form h3 {
    font-size: 24px;
    margin-bottom: 30px;
    color: var(--primary-color);
    display: flex;
    align-items: center;
}

.contact-form h3 i {
    margin-right: 10px;
    color: var(--accent-color);
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom:8px; line-height:1.2;
    font-weight: 500;
    color: var(--primary-color);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding:12px;
    border: 1px solid var(--border-color);
    border-radius:8px;
    font-size: 16px;
    transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent-color);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

/* Footer */
footer {
    background: var(--primary-color);
    color: white;
    padding: 80px 0 40px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 40px;
    margin-bottom: 40px;
}

.footer-section h3 {
    font-size: 18px;
    margin-bottom: 20px;
    color: white;
}

.footer-section p {
    font-size: 14px;
    line-height: 1.6;
    opacity: 0.8;
}

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

.footer-section ul li {
    margin-bottom: 10px;
}

.footer-section ul li a {
    color: white;
    text-decoration: none;
    font-size: 14px;
    opacity: 0.8;
    transition: opacity 0.3s ease;
}

.footer-section ul li a:hover {
    opacity: 1;
}

.social-links {
    display: flex;
    gap: 15px;
    margin-top: 20px;
}

.social-links a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: rgba(255,255,255,0.1);
    border-radius: 50%;
    color: white;
    transition: all 0.3s ease;
}

.social-links a:hover {
    background: var(--accent-color);
    transform: translateY(-3px);
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: 40px;
    text-align: center;
}

.footer-bottom p {
    font-size: 14px;
    opacity: 0.8;
}

/* Responsive */
@media (max-width: 768px) {
    :root{
        --marginX:60px;
        --marginB:30px;
    }
    .container {
        width: 100%;
    }
    .tagline{display:none;}
    .header-content {
        flex-direction: column; padding-bottom:8px;
        gap:12px; border-bottom:4px solid var(--primary-color);
    }
    .logo img{height:48px;}
    nav ul {
        flex-direction: row;
        align-items: center;
        gap: 15px;
    }
    
    nav ul li {
        margin-left: 0;
    }
    .hero{padding:50px 0;}
    .hero h1 {
        font-size: 36px;
    }
    
    .hero p {
        font-size: 18px;
    }
    .section-title::before{font-size:48px;}
    .about-content {
        flex-direction: column;
        gap: 40px;
    }
    
    .values-grid,
    .business-grid {
        grid-template-columns: 1fr;
    }
    
    .contact-content {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 40px;
    } 
}

/* Scroll animations */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}