:root {
    --primary: #0f5c2f;
    --primary-light: #27ae60;
    --secondary: #ffae42;
    --dark: #1e2a3e;
    --light-bg: #fafef7;
    --gray-bg: #f9fafc;
}

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

body {
    font-family: 'Inter', system-ui, -apple-system, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
    background: #ffffff;
    color: var(--dark);
    line-height: 1.5;
    scroll-behavior: smooth;
}

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
}

/* 头部 */
header {
    background: rgba(255,255,255,0.96);
    backdrop-filter: blur(12px);
    box-shadow: 0 2px 20px rgba(0,0,0,0.04);
    position: sticky;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid #eef2f6;
}
.nav-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.9rem 0;
    flex-wrap: wrap;
}
.logo h1 {
    font-size: 1.5rem;
    font-weight: 800;
    background: linear-gradient(130deg, var(--primary), var(--primary-light));
    background-clip: text;
    -webkit-background-clip: text;
    color: transparent;
}
.logo p {
    font-size: 0.7rem;
    font-weight: 600;
    color: #2c6e3f;
}
.nav-links {
    display: flex;
    gap: 2rem;
    list-style: none;
    align-items: center;
}
.nav-links a {
    text-decoration: none;
    font-weight: 600;
    color: #1e3b4c;
    transition: 0.25s;
}
.nav-links a:hover, .nav-links a.active {
    color: var(--primary-light);
}
.nav-btn {
    background: var(--primary-light);
    color: white !important;
    padding: 0.5rem 1.2rem;
    border-radius: 40px;
}
.mobile-menu-btn {
    display: none;
    font-size: 1.8rem;
    background: none;
    border: none;
    cursor: pointer;
}

/* Hero 区域增强 */
.hero {
    background: linear-gradient(135deg, #0a331f 0%, #1c7948 100%);
    color: white;
    padding: 4rem 0 5rem;
    position: relative;
    overflow: hidden;
}
.hero::before {
    content: "";
    position: absolute;
    top: -30%;
    right: -10%;
    width: 60%;
    height: 120%;
    background: radial-gradient(circle, rgba(255,255,255,0.08) 0%, rgba(255,255,255,0) 70%);
    transform: rotate(15deg);
    pointer-events: none;
}
.hero-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 2.5rem;
    align-items: center;
    position: relative;
}
.hero-content {
    flex: 1.2;
}
.hero-badge {
    background: var(--secondary);
    color: #1c5a3a;
    display: inline-block;
    padding: 0.25rem 1rem;
    border-radius: 60px;
    font-weight: 800;
    font-size: 0.8rem;
    margin-bottom: 1.2rem;
}
.hero-content h2 {
    font-size: 2.8rem;
    line-height: 1.2;
    font-weight: 800;
    margin-bottom: 1rem;
}
.hero-date-place {
    display: flex;
    gap: 1.5rem;
    flex-wrap: wrap;
    margin: 1.2rem 0;
    font-size: 1.05rem;
}
.hero-btn {
    background: var(--secondary);
    color: #1e3a2f;
    padding: 0.9rem 2rem;
    border-radius: 50px;
    font-weight: bold;
    display: inline-block;
    text-decoration: none;
    transition: transform 0.2s, box-shadow 0.2s;
    box-shadow: 0 8px 18px rgba(0,0,0,0.2);
}
.hero-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 24px rgba(0,0,0,0.3);
}
.hero-stats {
    flex: 0.7;
    background: rgba(255,255,255,0.12);
    backdrop-filter: blur(8px);
    border-radius: 40px;
    padding: 1.8rem;
}
.stat-item {
    margin: 1rem 0;
}
.stat-number {
    font-size: 2rem;
    font-weight: 800;
}

/* 通用 */
section {
    padding: 4rem 0;
}
.section-title {
    font-size: 2rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 2rem;
    color: var(--primary);
}
.section-title:after {
    content: '';
    width: 70px;
    height: 4px;
    background: var(--primary-light);
    display: block;
    margin: 0.5rem auto 0;
    border-radius: 4px;
}
.grid-3, .grid-4 {
    display: grid;
    gap: 2rem;
}
.grid-3 {
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}
.grid-4 {
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}
.card {
    background: #ffffff;
    border-radius: 28px;
    padding: 1.8rem;
    box-shadow: 0 12px 28px rgba(0,0,0,0.04);
    border: 1px solid #eff3f6;
    transition: all 0.3s ease;
}
.card:hover {
    transform: translateY(-6px);
    box-shadow: 0 20px 30px rgba(0,0,0,0.08);
}
.card i {
    font-size: 2.5rem;
    color: var(--primary-light);
    margin-bottom: 1rem;
}
.bg-soft {
    background: var(--light-bg);
}
.schedule-item {
    border-left: 4px solid var(--primary-light);
    background: var(--gray-bg);
    margin-bottom: 1rem;
    padding: 1rem 1.5rem;
    border-radius: 20px;
}
.organizer-link {
    background: #eef3e9;
    border-radius: 28px;
    text-align: center;
    padding: 1rem;
    margin: 2rem 0 0;
}
/* 装饰线条 */
.divider-wave {
    background: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1200 30" preserveAspectRatio="none"><path d="M0,15 C200,35 400,5 600,15 C800,25 1000,5 1200,15 L1200,30 L0,30 Z" fill="%2327ae60" opacity="0.1"/></svg>') repeat-x bottom;
    height: 30px;
    width: 100%;
}
/* 联系区域 */
.contact-wrapper {
    display: flex;
    flex-wrap: wrap;
    gap: 2rem;
    margin-top: 1rem;
}
.contact-card {
    flex: 1;
    background: white;
    border-radius: 32px;
    padding: 2rem;
    box-shadow: 0 12px 28px rgba(0,0,0,0.05);
}
.contact-detail {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.2rem;
    flex-wrap: wrap;
}
.qrcode-img {
    width: 150px;
    border-radius: 16px;
    border: 2px solid #dce9db;
}
.copy-btn {
    background: var(--primary-light);
    border: none;
    color: white;
    padding: 0.3rem 0.8rem;
    border-radius: 30px;
    font-size: 0.7rem;
    cursor: pointer;
    transition: 0.2s;
}
.copy-btn:hover {
    background: #0f5c2f;
}
footer {
    background: #0a2c1a;
    color: #cde2d0;
    padding: 2rem 0 1.5rem;
}
/* 文章详情样式 */
.article-content {
    max-width: 900px;
    margin: 0 auto;
    font-size: 1.05rem;
    line-height: 1.7;
    color: #2c3e2f;
}
.article-content h3 {
    margin: 1.5rem 0 0.8rem;
    color: var(--primary);
}
.article-content p {
    margin-bottom: 1.2rem;
}
.article-meta {
    color: #6c7a6e;
    border-bottom: 1px solid #e2e8f0;
    padding-bottom: 1rem;
    margin-bottom: 1.5rem;
}
/* 响应式 */
@media (max-width: 860px) {
    .nav-links {
        display: none;
        width: 100%;
        flex-direction: column;
        background: white;
        padding: 1rem;
        gap: 1rem;
        border-radius: 20px;
        margin-top: 1rem;
    }
    .nav-links.show {
        display: flex;
    }
    .mobile-menu-btn {
        display: block;
    }
    .hero-content h2 {
        font-size: 1.9rem;
    }
}