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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f9f9f9;
}

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

ul {
    list-style: none;
}

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

/* Utilities */
.section-gray { background-color: #f4f6f8; }
.section-white { background-color: #ffffff; }
.section-dark { background-color: #1a1a2e; color: #fff; }
.highlight { color: #e74c3c; }

/* Header */
.header {
    background: #fff;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
    padding: 15px 0;
}

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

.logo {
    font-size: 24px;
    font-weight: bold;
    color: #2c3e50;
}

.header nav ul {
    display: flex;
    gap: 20px;
}

.header nav a {
    color: #555;
    font-weight: 500;
    transition: color 0.3s;
}

.header nav a:hover {
    color: #007bff;
}

.btn-wechat-nav {
    background-color: #07c160;
    color: white !important;
    padding: 8px 15px;
    border-radius: 4px;
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, #2c3e50 0%, #3498db 100%);
    color: white;
    padding: 100px 0;
    text-align: center;
}

.hero h1 {
    font-size: 48px;
    margin-bottom: 20px;
}

.hero .subtitle {
    font-size: 20px;
    opacity: 0.9;
    margin-bottom: 40px;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.cta-group {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-bottom: 30px;
}

.btn-primary {
    background-color: #e74c3c;
    color: white;
    padding: 15px 30px;
    border-radius: 30px;
    font-weight: bold;
    font-size: 18px;
    transition: transform 0.2s;
}

.btn-primary:hover {
    transform: scale(1.05);
}

.btn-secondary {
    background-color: transparent;
    border: 2px solid white;
    color: white;
    padding: 15px 30px;
    border-radius: 30px;
    font-weight: bold;
    font-size: 18px;
}

.trust-badge {
    margin-top: 30px;
    font-size: 14px;
    opacity: 0.8;
}

.trust-badge span {
    margin: 0 10px;
}

/* Sections */
section {
    padding: 80px 0;
}

h2 {
    text-align: center;
    font-size: 36px;
    margin-bottom: 50px;
    position: relative;
}

h2::after {
    content: '';
    display: block;
    width: 60px;
    height: 4px;
    background: #007bff;
    margin: 15px auto 0;
}

/* Grid Layouts */
.grid-3 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.card {
    background: white;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
    transition: transform 0.3s;
}

.card:hover {
    transform: translateY(-5px);
}

.card h3 {
    margin-bottom: 15px;
    color: #e74c3c;
}

/* Features */
.features {
    display: flex;
    flex-direction: column;
    gap: 40px;
    max-width: 900px;
    margin: 0 auto;
}

.feature-item {
    display: flex;
    align-items: flex-start;
    gap: 20px;
}

.feature-item .icon {
    font-size: 40px;
    background: #e3f2fd;
    width: 80px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    flex-shrink: 0;
}

.feature-item h3 {
    margin-bottom: 10px;
    font-size: 22px;
}

/* Pricing */
.pricing-grid {
    display: flex;
    justify-content: center;
    gap: 30px;
    flex-wrap: wrap;
}

.price-card {
    background: rgba(255,255,255,0.1);
    border: 1px solid rgba(255,255,255,0.2);
    padding: 40px;
    border-radius: 15px;
    width: 350px;
    text-align: center;
}

.price-card.popular {
    background: #fff;
    color: #333;
    transform: scale(1.05);
    border: none;
    position: relative;
}

.price-card.popular::before {
    content: '老板推荐';
    position: absolute;
    top: -15px;
    left: 50%;
    transform: translateX(-50%);
    background: #e74c3c;
    color: white;
    padding: 5px 15px;
    border-radius: 15px;
    font-size: 12px;
}

.price-tag {
    font-size: 24px;
    font-weight: bold;
    margin: 20px 0;
    color: #007bff;
}

.price-card ul {
    margin-bottom: 30px;
    text-align: left;
}

.price-card ul li {
    margin-bottom: 10px;
    padding-left: 20px;
    position: relative;
}

.price-card ul li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: #2ecc71;
}

.btn-outline {
    display: inline-block;
    border: 2px solid white;
    padding: 10px 30px;
    border-radius: 25px;
    transition: background 0.3s, color 0.3s;
}
.btn-outline:hover {
    background: white;
    color: #1a1a2e;
}

.btn-solid {
    display: inline-block;
    background: #e74c3c;
    color: white;
    padding: 10px 30px;
    border-radius: 25px;
    transition: background 0.3s;
}
.btn-solid:hover {
    background: #c0392b;
}

/* SEO Article */
.seo-content article {
    max-width: 800px;
    margin: 0 auto;
    background: white;
    padding: 40px;
    border-radius: 8px;
}

.seo-content h3 {
    margin-bottom: 20px;
    color: #2c3e50;
}

.seo-content p {
    margin-bottom: 15px;
    color: #666;
}

/* Footer Contact (Updated for Dual Contacts) */
.footer-contact {
    text-align: center;
    background: #fff;
    padding: 60px 0;
}

.contact-group {
    display: flex;
    justify-content: center;
    gap: 30px;
    margin-top: 30px;
    flex-wrap: wrap;
}

.contact-card {
    background: #f8f9fa;
    padding: 30px;
    border-radius: 15px;
    width: 320px;
    border: 2px solid #e9ecef;
    transition: transform 0.3s, box-shadow 0.3s;
}

.contact-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.1);
}

.contact-card.telegram {
    border-color: #0088cc;
    background: #eef7fc;
}

.contact-card.wechat {
    border-color: #07c160;
    background: #f0f9f0;
}

.contact-card .icon {
    font-size: 40px;
    margin-bottom: 15px;
}

.contact-card h3 {
    font-size: 20px;
    margin-bottom: 15px;
    color: #333;
}

.qr-placeholder {
    width: 150px;
    height: 150px;
    background: #ddd;
    margin: 0 auto 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #666;
    font-size: 14px;
    border-radius: 8px;
    overflow: hidden; /* Ensure image fits */
}

.qr-placeholder img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.contact-id {
    font-size: 22px;
    font-weight: bold;
    margin-bottom: 15px;
    font-family: monospace;
    background: rgba(255,255,255,0.5);
    padding: 5px;
    border-radius: 4px;
    display: inline-block;
}

.contact-card.telegram .contact-id { color: #0088cc; }
.contact-card.wechat .contact-id { color: #07c160; }

.contact-card button {
    border: none;
    padding: 10px 20px;
    border-radius: 20px;
    cursor: pointer;
    font-weight: bold;
    color: white;
    transition: opacity 0.2s;
}

.contact-card.telegram button { background-color: #0088cc; }
.contact-card.wechat button { background-color: #07c160; }

.contact-card button:hover { opacity: 0.9; }

.contact-card .note {
    margin-top: 15px;
    font-size: 14px;
    color: #777;
}

footer {
    background: #111;
    color: #888;
    text-align: center;
    padding: 20px 0;
    font-size: 14px;
}

/* Mobile Responsive */
@media (max-width: 768px) {
    .hero h1 { font-size: 32px; }
    .header nav { display: none; } /* Simplify for mobile */
    .pricing-grid { flex-direction: column; align-items: center; }
    .feature-item { flex-direction: column; align-items: center; text-align: center; }
    .price-card.popular { transform: scale(1); }
    .contact-group { flex-direction: column; align-items: center; }
    .header .container { justify-content: center; }
}