* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: "Segoe UI", "Helvetica Neue", Arial, "Microsoft YaHei", "微软雅黑", "PingFang SC", sans-serif;
}

body {
    background: linear-gradient(145deg, #1e293b 0%, #0f172a 100%);
    color: #e2e8f0;
    line-height: 1.7;
    font-size: 16px;
}

a {
    color: #cbd5e1;
    text-decoration: none;
    transition: color 0.3s ease;
}

a:hover {
    color: #f87171;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

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

/* Header */
.site-header {
    background: linear-gradient(135deg, #1e293b 0%, #334155 50%, #0f172a 100%);
    border-bottom: 2px solid #b91c1c;
    padding: 15px 0;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
}

.header-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
}

.logo img {
    width: 48px;
    height: 48px;
    border-radius: 8px;
    border: 2px solid #b91c1c;
}

.nav-links {
    display: flex;
    gap: 24px;
    align-items: center;
    flex-wrap: wrap;
}

.nav-links a {
    font-weight: 600;
    padding: 8px 16px;
    border-radius: 6px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid transparent;
    transition: all 0.3s ease;
}

.nav-links a:hover {
    background: rgba(185, 28, 28, 0.3);
    border-color: #b91c1c;
    color: #fff;
}

/* Hero */
.hero-section {
    position: relative;
    padding: 80px 20px;
    text-align: center;
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 60%, #334155 100%);
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 70% 30%, rgba(185, 28, 28, 0.15) 0%, transparent 60%);
}

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

.hero-content h1 {
    font-size: 42px;
    font-weight: 700;
    margin-bottom: 16px;
    background: linear-gradient(90deg, #f1f5f9, #94a3b8, #f1f5f9);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    text-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
}

.hero-subtitle {
    font-size: 18px;
    color: #94a3b8;
    margin-bottom: 30px;
    letter-spacing: 2px;
}

.hero-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
}

.btn {
    display: inline-block;
    padding: 12px 32px;
    border-radius: 6px;
    font-weight: 700;
    border: 2px solid #b91c1c;
    background: linear-gradient(135deg, #b91c1c, #7f1d1d);
    color: #fff;
    transition: transform 0.2s, box-shadow 0.2s;
    box-shadow: 0 4px 15px rgba(185, 28, 28, 0.4);
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 25px rgba(185, 28, 28, 0.6);
    color: #fff;
}

.btn-silver {
    background: linear-gradient(135deg, #64748b, #334155);
    border-color: #64748b;
    box-shadow: 0 4px 15px rgba(100, 116, 139, 0.4);
}

.btn-silver:hover {
    box-shadow: 0 6px 25px rgba(100, 116, 139, 0.6);
}

.hero-img {
    margin-top: 40px;
    border-radius: 12px;
    border: 3px solid #334155;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
}

/* GEO Intro */
.geo-section {
    padding: 60px 20px;
    background: #0f172a;
}

.geo-content {
    max-width: 900px;
    margin: 0 auto;
    font-size: 17px;
    color: #cbd5e1;
    text-align: center;
    line-height: 1.8;
}

/* Section Common */
.section-title {
    font-size: 32px;
    font-weight: 700;
    text-align: center;
    margin-bottom: 40px;
    color: #f1f5f9;
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, #b91c1c, transparent);
    margin: 10px auto 0;
}

/* Core Advantages */
.advantages-section {
    padding: 60px 20px;
    background: linear-gradient(180deg, #0f172a 0%, #1e293b 100%);
}

.advantages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    max-width: 1100px;
    margin: 0 auto;
}

.advantage-card {
    background: linear-gradient(145deg, #1e293b, #0f172a);
    border: 2px solid #334155;
    border-radius: 12px;
    padding: 30px;
    text-align: center;
    transition: all 0.3s ease;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.3);
}

.advantage-card:hover {
    border-color: #b91c1c;
    transform: translateY(-5px);
    box-shadow: 0 12px 40px rgba(185, 28, 28, 0.3);
}

.advantage-card img {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    margin: 0 auto 20px;
    border: 3px solid #64748b;
    object-fit: cover;
}

.advantage-card h3 {
    font-size: 20px;
    color: #f1f5f9;
    margin-bottom: 12px;
}

.advantage-card p {
    color: #94a3b8;
    font-size: 14px;
}

/* Stats */
.stats-section {
    padding: 60px 20px;
    background: #1e293b;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
    max-width: 1100px;
    margin: 0 auto;
}

.stat-item {
    text-align: center;
    padding: 30px 20px;
    background: linear-gradient(145deg, #0f172a, #1e293b);
    border-radius: 12px;
    border: 1px solid #334155;
}

.stat-item strong {
    font-size: 40px;
    color: #f87171;
    display: block;
    margin-bottom: 8px;
}

.stat-item span {
    color: #94a3b8;
    font-size: 15px;
}

/* Brand Story */
.story-section {
    padding: 60px 20px;
    background: #0f172a;
}

.story-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    max-width: 1100px;
    margin: 0 auto;
    align-items: center;
}

.story-content img {
    border-radius: 12px;
    border: 3px solid #334155;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.4);
}

.story-text p {
    color: #cbd5e1;
    font-size: 16px;
    margin-bottom: 15px;
}

/* Events */
.events-section {
    padding: 60px 20px;
    background: linear-gradient(180deg, #1e293b, #0f172a);
}

.event-card {
    max-width: 900px;
    margin: 0 auto;
    background: linear-gradient(145deg, #1e293b, #0f172a);
    border: 2px solid #334155;
    border-radius: 16px;
    padding: 30px;
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 30px;
    align-items: center;
    transition: border-color 0.3s;
}

.event-card:hover {
    border-color: #b91c1c;
}

.event-card img {
    border-radius: 12px;
    border: 2px solid #64748b;
}

.event-info h3 {
    font-size: 24px;
    color: #f1f5f9;
    margin-bottom: 10px;
}

.event-info p {
    color: #94a3b8;
    margin-bottom: 15px;
}

/* News */
.news-section {
    padding: 60px 20px;
    background: #0f172a;
}

.news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 30px;
    max-width: 1200px;
    margin: 0 auto;
}

.news-item {
    background: linear-gradient(145deg, #1e293b, #0f172a);
    border: 1px solid #334155;
    border-radius: 12px;
    padding: 25px;
    transition: border-color 0.3s, transform 0.3s;
}

.news-item:hover {
    border-color: #b91c1c;
    transform: translateY(-3px);
}

.news-item time {
    color: #f87171;
    font-size: 13px;
    display: block;
    margin-bottom: 10px;
    font-weight: 600;
}

.news-item h3 {
    color: #f1f5f9;
    font-size: 18px;
    margin-bottom: 10px;
}

.news-item p {
    color: #94a3b8;
    font-size: 14px;
    line-height: 1.6;
}

/* Testimonials */
.testimonials-section {
    padding: 60px 20px;
    background: #1e293b;
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    max-width: 1100px;
    margin: 0 auto;
}

.testimonial-card {
    background: linear-gradient(145deg, #0f172a, #1e293b);
    border: 1px solid #334155;
    border-radius: 12px;
    padding: 25px;
    text-align: center;
}

.testimonial-card img {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    margin: 0 auto 15px;
    border: 2px solid #b91c1c;
    object-fit: cover;
}

.testimonial-card p {
    color: #cbd5e1;
    font-style: italic;
    margin-bottom: 10px;
}

.testimonial-card span {
    color: #64748b;
    font-size: 14px;
}

/* FAQ */
.faq-section {
    padding: 60px 20px;
    background: #0f172a;
}

.faq-list {
    max-width: 900px;
    margin: 0 auto;
}

.faq-item {
    background: linear-gradient(145deg, #1e293b, #0f172a);
    border: 1px solid #334155;
    border-radius: 10px;
    margin-bottom: 16px;
    padding: 20px 25px;
    transition: border-color 0.3s;
}

.faq-item:hover {
    border-color: #b91c1c;
}

.faq-item h3 {
    color: #f1f5f9;
    font-size: 17px;
    margin-bottom: 8px;
}

.faq-item p {
    color: #94a3b8;
    font-size: 15px;
}

/* Partners */
.partners-section {
    padding: 60px 20px;
    background: #1e293b;
}

.partners-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 30px;
    max-width: 1100px;
    margin: 0 auto;
}

.partner-item {
    background: #0f172a;
    border: 2px solid #334155;
    border-radius: 12px;
    padding: 15px 25px;
    text-align: center;
    transition: border-color 0.3s;
}

.partner-item:hover {
    border-color: #b91c1c;
}

.partner-item img {
    width: 80px;
    height: 80px;
    border-radius: 8px;
    object-fit: cover;
}

/* CTA */
.cta-section {
    padding: 80px 20px;
    background: linear-gradient(135deg, #1e293b, #0f172a);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.cta-section::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(185, 28, 28, 0.1) 0%, transparent 50%);
}

.cta-section h2 {
    font-size: 32px;
    color: #f1f5f9;
    margin-bottom: 15px;
    position: relative;
}

.cta-section p {
    color: #94a3b8;
    margin-bottom: 30px;
    position: relative;
}

.cta-section .btn-group {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
    position: relative;
}

/* Download */
.download-section {
    padding: 60px 20px;
    background: #0f172a;
}

.download-content {
    max-width: 900px;
    margin: 0 auto;
    text-align: center;
    background: linear-gradient(145deg, #1e293b, #0f172a);
    border: 2px solid #334155;
    border-radius: 16px;
    padding: 40px;
}

.download-content img {
    width: 120px;
    height: 120px;
    border-radius: 20px;
    margin: 0 auto 20px;
    border: 3px solid #b91c1c;
    box-shadow: 0 8px 30px rgba(185, 28, 28, 0.3);
}

.download-content h2 {
    font-size: 28px;
    color: #f1f5f9;
    margin-bottom: 10px;
}

.download-content p {
    color: #94a3b8;
    margin-bottom: 20px;
}

/* Footer */
.site-footer {
    background: linear-gradient(180deg, #0f172a, #000);
    border-top: 3px solid #b91c1c;
    padding: 40px 20px 20px;
    color: #64748b;
    font-size: 14px;
}

.footer-inner {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 30px;
}

.footer-col p {
    margin-bottom: 8px;
}

.footer-links a {
    color: #94a3b8;
    padding: 0 8px;
}

.footer-bottom {
    text-align: center;
    margin-top: 30px;
    padding-top: 20px;
    border-top: 1px solid #1e293b;
    color: #475569;
    font-size: 13px;
}

@media (max-width: 768px) {
    .hero-content h1 { font-size: 28px; }
    .story-content { grid-template-columns: 1fr; }
    .event-card { grid-template-columns: 1fr; }
    .nav-links { gap: 12px; }
    .nav-links a { padding: 6px 12px; font-size: 14px; }
}