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

body {
    font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
    color: #333;
    background-color: #fff;
    line-height: 1.6;
}

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

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

/* Header Styles */
header {
    background-color: #fff; /* Initially transparent or white, usually white in design */
    padding: 20px 0;
    position: relative;
    z-index: 100;
}

.header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 24px;
    font-weight: bold;
    color: #1a73e8; /* Logo color placeholder */
    display: flex;
    align-items: center;
}

.logo img {
    height: 40px;
    margin-right: 10px;
}

.nav-menu {
    display: flex;
    gap: 30px;
    align-items: center;
}

.nav-link {
    font-size: 16px;
    color: #666;
    transition: color 0.3s;
    padding-bottom: 5px;
}

.nav-link:hover, .nav-link.active {
    color: #1a73e8;
    border-bottom: 2px solid #1a73e8;
}

.download-btn {
    display: flex;
    align-items: center;
    gap: 5px;
    color: #666;
    font-size: 14px;
}
.download-btn.active {
    color: #1a73e8;
    border-bottom: 2px solid #1a73e8;
}

/* Hero Section */
.hero-section {
    background: linear-gradient(135deg, #e0f2fe 0%, #f0f9ff 50%, #e0f7fa 100%); /* Light blue gradient */
    min-height: 800px; /* Adjust as needed */
    display: flex;
    align-items: center;
    padding-top: 50px;
    position: relative;
    overflow: hidden;
}

.hero-section .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
}

.download-section .container {
    flex-direction: column;
    align-items: center;
}

.download-section .hero-content {
    text-align: center;
    max-width: 800px;
}

.download-section .hero-image {
    margin-top: 24px;
}

.hero-content {
    flex: 1;
    max-width: 600px;
    z-index: 10;
}

.hero-tabs {
    display: flex;
    gap: 20px;
    margin-bottom: 30px;
}

.tab-btn {
    background: none;
    border: none;
    font-size: 16px;
    color: #666;
    cursor: pointer;
    padding: 8px 16px;
    border-radius: 20px;
    transition: all 0.3s;
}

.tab-btn.active {
    background-color: #1a73e8;
    color: #fff;
}

.hero-title {
    font-size: 64px;
    font-weight: bold;
    color: #000;
    margin-bottom: 10px;
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 36px;
    color: #333;
    margin-bottom: 30px;
    position: relative;
    display: inline-block;
}

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

.hero-subtitle .highlight::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 10px;
    background-color: #4ade80; /* Green highlight */
    z-index: -1;
    opacity: 0.6;
    transform: skewX(-20deg);
}

.hero-desc {
    font-size: 18px;
    color: #555;
    margin-bottom: 40px;
    line-height: 1.8;
}

.cta-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background-color: #1a73e8;
    color: #fff;
    padding: 15px 40px;
    border-radius: 30px;
    font-size: 18px;
    font-weight: bold;
    transition: background-color 0.3s;
}

.cta-btn:hover {
    background-color: #1557b0;
}

.cta-btn .arrow {
    margin-left: 10px;
    font-size: 20px;
}

.hero-image {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-image::before {
    content: "";
    position: absolute;
    width: 650px;
    height: 650px;
    background: radial-gradient(circle, rgba(224, 242, 254, 0.8) 0%, rgba(224, 242, 254, 0) 70%);
    border-radius: 50%;
    z-index: -1;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.hero-image::after {
    content: "";
    position: absolute;
    width: 580px;
    height: 580px;
    border-radius: 50%;
    z-index: -2;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.hero-section::before {
    content: "";
    position: absolute;
    right: 0px;
    top: 50%;
    transform: translateY(-50%);
    width: 750px;
    height: 750px;
    border: 1px solid rgba(26, 115, 232, 0.05);
    border-radius: 50%;
    pointer-events: none;
    z-index: 0;
}

.hero-image img {
    max-width: 100%;
    height: auto;
    max-height: 700px;
    /* Drop shadow to make it pop like in design */
    filter: drop-shadow(0 20px 40px rgba(0,0,0,0.1));
}

/* Download Page */
.download-cards {
    display: flex;
    gap: 80px;
    justify-content: center;
    align-items: flex-start;
    width: 100%;
    margin-top: 20px;
}

.qr-card {
    background: #fff;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
    padding: 24px;
    width: 320px;
    text-align: center;
}

.qr-code {
    width: 260px;
    height: 260px;
    border-radius: 16px;
    margin: 0 auto 16px;
}

.qr-code img {
    width: 100%;
    height: 100%;
    border-radius: 16px;
    display: block;
}

.qr-label {
    font-size: 14px;
    color: #666;
    margin-top: 8px;
}
/* Footer Styles */
footer {
    background-color: #111;
    color: #999;
    padding: 60px 0 30px;
}

.footer-top {
    display: flex;
    justify-content: space-between;
    margin-bottom: 50px;
}

.footer-logo img {
    height: 40px; /* Adjust based on actual logo */
    margin-bottom: 20px;
    filter: brightness(0) invert(1); /* Make logo white if it's black */
}

.footer-contact {
    font-size: 14px;
    line-height: 2;
}

.footer-contact p {
    display: flex;
    align-items: center;
    gap: 10px;
}

.footer-links {
    display: flex;
    gap: 30px;
}

.footer-links a {
    color: #999;
    font-size: 14px;
    transition: color 0.3s;
}

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

.footer-bottom {
    border-top: 1px solid #333;
    padding-top: 30px;
    text-align: center;
    font-size: 12px;
    color: #666;
    display: flex;
    justify-content: space-between;
}