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

body {
    font-family: "Microsoft YaHei", "PingFang SC", "Hiragino Sans GB", sans-serif;
    line-height: 1.6;
    color: #333;
    background: #f5f5f5;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 20px 0;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.logo {
    font-size: 28px;
    font-weight: bold;
    margin-bottom: 10px;
}

nav ul {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
}

nav a {
    color: white;
    text-decoration: none;
    padding: 8px 15px;
    border-radius: 5px;
    transition: background 0.3s;
}

nav a:hover {
    background: rgba(255,255,255,0.2);
}

.hero {
    background: white;
    padding: 40px 20px;
    margin: 20px 0;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

.hero-grid {
    display: grid;
    grid-template-columns: 1fr 2fr 1fr;
    gap: 30px;
}

.hero-left, .hero-right {
    background: #f9f9f9;
    padding: 20px;
    border-radius: 8px;
}

.hero-center {
    padding: 20px;
}

h1 {
    color: #667eea;
    font-size: 32px;
    margin-bottom: 20px;
    text-align: center;
}

h2 {
    color: #333;
    font-size: 24px;
    margin: 20px 0 15px;
    border-left: 4px solid #667eea;
    padding-left: 15px;
}

h3 {
    color: #555;
    font-size: 20px;
    margin: 15px 0 10px;
}

p {
    margin-bottom: 15px;
    text-align: justify;
}

.content-section {
    background: white;
    padding: 30px;
    margin: 20px 0;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

.breadcrumb {
    background: #f9f9f9;
    padding: 15px 20px;
    border-radius: 5px;
    margin-bottom: 20px;
    font-size: 14px;
}

.breadcrumb a {
    color: #667eea;
    text-decoration: none;
}

.breadcrumb a:hover {
    text-decoration: underline;
}

.promo-float-wrap {
    position: fixed;
    top: 12px;
    left: 18px;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.promo-btn {
    display: block;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #fff !important;
    border: none;
    padding: 12px 22px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: bold;
    font-size: 15px;
    letter-spacing: 1px;
    box-shadow: 0 4px 12px rgba(102,126,234,0.4);
    transition: all 0.3s;
    white-space: nowrap;
    text-align: center;
    cursor: pointer;
}

.promo-btn:hover {
    background: linear-gradient(135deg, #764ba2 0%, #667eea 100%);
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(102,126,234,0.5);
    color: #fff !important;
    text-decoration: none;
}

.promo-btn-alt {
    background: linear-gradient(135deg, #4a5fc1 0%, #6c63ff 100%);
    box-shadow: 0 4px 12px rgba(108,99,255,0.4);
}

.promo-btn-alt:hover {
    background: linear-gradient(135deg, #6c63ff 0%, #4a5fc1 100%);
    box-shadow: 0 6px 16px rgba(108,99,255,0.5);
}

.util-float-wrap {
    position: fixed;
    top: 12px;
    right: 18px;
    z-index: 9998;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.util-btn {
    display: block;
    background: #fff;
    color: #333 !important;
    border: 1px solid #ddd;
    padding: 8px 16px;
    border-radius: 6px;
    text-decoration: none;
    font-size: 13px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    transition: all 0.3s;
    white-space: nowrap;
    text-align: center;
}

.util-btn:hover {
    background: #f5f5f5;
    border-color: #667eea;
    color: #667eea !important;
    text-decoration: none;
}

.cta-float-wrap {
    position: fixed;
    top: 80px;
    right: 18px;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.cta-btn {
    display: block;
    background: linear-gradient(135deg, #b71c1c 0%, #d32f2f 100%);
    color: #fff !important;
    border: none;
    padding: 14px 28px;
    border-radius: 10px;
    text-decoration: none;
    font-weight: bold;
    font-size: 18px;
    letter-spacing: 1px;
    box-shadow: 0 4px 16px rgba(183,28,28,0.45);
    transition: all 0.3s;
    white-space: nowrap;
    text-align: center;
    cursor: pointer;
}

.cta-btn:hover {
    background: linear-gradient(135deg, #d32f2f 0%, #e53935 100%);
    transform: translateY(-3px) scale(1.03);
    box-shadow: 0 8px 24px rgba(183,28,28,0.55);
    color: #fff !important;
    text-decoration: none;
}

.cta-btn-alt {
    background: linear-gradient(135deg, #e65100 0%, #f57c00 100%);
    box-shadow: 0 4px 16px rgba(230,81,0,0.45);
}

.cta-btn-alt:hover {
    background: linear-gradient(135deg, #f57c00 0%, #ff9800 100%);
    box-shadow: 0 8px 24px rgba(230,81,0,0.55);
}

.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
    margin: 20px 0;
}

.card {
    background: white;
    border-radius: 10px;
    padding: 20px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    transition: transform 0.3s, box-shadow 0.3s;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
}

.card h3 {
    color: #667eea;
    margin-bottom: 10px;
}

footer {
    background: #333;
    color: white;
    padding: 30px 0;
    margin-top: 40px;
    text-align: center;
}

footer a {
    color: #667eea;
    text-decoration: none;
}

footer a:hover {
    text-decoration: underline;
}

@media (max-width: 768px) {
    .hero-grid {
        grid-template-columns: 1fr;
    }

    h1 {
        font-size: 24px;
    }

    h2 {
        font-size: 20px;
    }

    nav ul {
        flex-direction: column;
        gap: 10px;
    }

    .promo-float-wrap {
        top: 8px;
        left: 8px;
        gap: 6px;
    }

    .promo-btn {
        padding: 8px 14px;
        font-size: 13px;
    }

    .util-float-wrap {
        top: 8px;
        right: 8px;
        gap: 4px;
    }

    .util-btn {
        padding: 6px 10px;
        font-size: 11px;
    }

    .cta-float-wrap {
        top: 60px;
        right: 8px;
        gap: 6px;
    }

    .cta-btn {
        padding: 10px 18px;
        font-size: 14px;
    }

    .container {
        padding: 0 10px;
    }

    .content-section {
        padding: 20px;
    }
}

@media (max-width: 480px) {
    .logo {
        font-size: 22px;
    }

    h1 {
        font-size: 20px;
    }

    .card-grid {
        grid-template-columns: 1fr;
    }
}

.article-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.article-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 16px;
    background: #fff;
    border-radius: 6px;
    border-left: 3px solid #667eea;
    transition: transform 0.2s, box-shadow 0.2s;
}

.article-item:hover {
    transform: translateX(4px);
    box-shadow: 0 2px 8px rgba(102,126,234,0.15);
}

.article-item a {
    color: #333;
    text-decoration: none;
    font-size: 15px;
    flex: 1;
}

.article-item a:hover {
    color: #667eea;
}

.article-date {
    color: #999;
    font-size: 13px;
    margin-left: 16px;
    white-space: nowrap;
}

.article-meta {
    color: #888;
    font-size: 14px;
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 1px solid #eee;
}

article p {
    margin-bottom: 18px;
    text-align: justify;
    line-height: 1.8;
    font-size: 16px;
    color: #444;
}

article h1 {
    text-align: left;
    font-size: 28px;
    color: #333;
    margin-bottom: 15px;
    line-height: 1.4;
}