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

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

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

[class$="_wrapper"] {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    overflow-x: hidden;
}

[class$="_header-inner"],
[class$="_hero-inner"],
[class$="_features-inner"],
[class$="_steps-inner"],
[class$="_articles-inner"],
[class$="_faq-inner"],
[class$="_tutorials-inner"],
[class$="_links-inner"],
[class$="_download-inner"],
[class$="_footer-inner"],
[class$="_footer-bottom"] {
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
}

[class$="_article-title"],
[class$="_tutorial-title"],
[class$="_feature-title"] {
    word-wrap: break-word;
    overflow-wrap: break-word;
}

[class$="_article-card"],
[class$="_tutorial-card"],
[class$="_feature-card"] {
    overflow: hidden;
}

[class$="_header"] {
    background: #fff;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 8px rgba(0,0,0,0.06);
}

[class$="_header-inner"] {
    max-width: 1200px;
    margin: 0 auto;
    padding: 16px 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

[class$="_logo"] {
    display: flex;
    align-items: center;
    gap: 10px;
}

[class$="_logo-text"] {
    font-size: 22px;
    font-weight: 700;
    color: #25D366;
}

[class$="_nav"] {
    display: flex;
    gap: 32px;
    align-items: center;
}

[class$="_nav"] a {
    color: #555;
    font-size: 15px;
    font-weight: 500;
    transition: color 0.3s;
}

[class$="_nav"] a:hover,
[class$="_nav"] a.active {
    color: #25D366;
}

[class$="_nav-btn"] {
    background: linear-gradient(135deg, #25D366 0%, #128C7E 100%);
    color: #fff !important;
    padding: 10px 24px;
    border-radius: 25px;
}

[class$="_hero"] {
    background: linear-gradient(135deg, #075E54 0%, #128C7E 50%, #25D366 100%);
    padding: 100px 24px;
    text-align: center;
}

[class$="_hero-inner"] {
    max-width: 900px;
    margin: 0 auto;
}

[class$="_hero-title"] {
    font-size: 48px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 20px;
    line-height: 1.2;
}

[class$="_hero-desc"] {
    font-size: 18px;
    color: rgba(255,255,255,0.9);
    margin-bottom: 40px;
    line-height: 1.8;
}

[class$="_hero-buttons"] {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
}

[class$="_btn-primary"] {
    background: #fff;
    color: #075E54;
    padding: 16px 36px;
    border-radius: 30px;
    font-size: 16px;
    font-weight: 600;
    transition: all 0.3s;
    display: inline-block;
}

[class$="_btn-primary"]:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 28px rgba(0,0,0,0.15);
}

[class$="_btn-secondary"] {
    background: rgba(255,255,255,0.15);
    color: #fff;
    padding: 16px 36px;
    border-radius: 30px;
    font-size: 16px;
    font-weight: 600;
    transition: all 0.3s;
    display: inline-block;
    border: 2px solid rgba(255,255,255,0.3);
}

[class$="_btn-secondary"]:hover {
    background: rgba(255,255,255,0.25);
    transform: translateY(-3px);
}

[class$="_features"] {
    padding: 80px 24px;
    background: #f8f9fa;
}

[class$="_features-inner"] {
    max-width: 1200px;
    margin: 0 auto;
}

[class$="_section-title"] {
    font-size: 32px;
    font-weight: 700;
    color: #075E54;
    text-align: center;
    margin-bottom: 16px;
}

[class$="_section-desc"] {
    font-size: 16px;
    color: #666;
    text-align: center;
    margin-bottom: 50px;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

[class$="_features-grid"] {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

[class$="_feature-card"] {
    background: #fff;
    padding: 40px 28px;
    border-radius: 16px;
    text-align: center;
    transition: all 0.3s;
    box-shadow: 0 4px 16px rgba(0,0,0,0.05);
}

[class$="_feature-card"]:hover {
    transform: translateY(-8px);
    box-shadow: 0 16px 40px rgba(0,0,0,0.1);
}

[class$="_feature-icon"] {
    font-size: 48px;
    margin-bottom: 20px;
}

[class$="_feature-title"] {
    font-size: 18px;
    font-weight: 700;
    color: #075E54;
    margin-bottom: 12px;
}

[class$="_feature-desc"] {
    font-size: 14px;
    color: #666;
    line-height: 1.7;
}

[class$="_steps"] {
    padding: 80px 24px;
    background: #fff;
}

[class$="_steps-inner"] {
    max-width: 1200px;
    margin: 0 auto;
}

[class$="_steps-list"] {
    display: flex;
    justify-content: center;
    gap: 40px;
    flex-wrap: wrap;
}

[class$="_step-item"] {
    flex: 1;
    min-width: 280px;
    max-width: 340px;
    text-align: center;
    position: relative;
}

[class$="_step-number"] {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #25D366 0%, #128C7E 100%);
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    font-weight: 700;
    margin: 0 auto 20px;
}

[class$="_step-text"] {
    font-size: 15px;
    color: #555;
    line-height: 1.7;
}

[class$="_articles"] {
    padding: 80px 24px;
    background: #f8f9fa;
}

[class$="_articles-inner"] {
    max-width: 1200px;
    margin: 0 auto;
}

[class$="_articles-grid"] {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

[class$="_article-card"] {
    background: #fff;
    padding: 28px;
    border-radius: 12px;
    transition: all 0.3s;
    border-left: 4px solid #25D366;
    display: block;
}

[class$="_article-card"]:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 32px rgba(0,0,0,0.08);
}

[class$="_article-title"] {
    font-size: 17px;
    font-weight: 600;
    color: #333;
    margin-bottom: 10px;
    line-height: 1.4;
}

[class$="_article-desc"] {
    font-size: 14px;
    color: #888;
}

[class$="_content"] {
    padding: 60px 24px;
    background: #fff;
}

[class$="_content-inner"] {
    max-width: 800px;
    margin: 0 auto;
}

[class$="_article"] {
    background: #fff;
}

[class$="_article-title"] {
    font-size: 28px;
    font-weight: 700;
    color: #075E54;
    margin-bottom: 24px;
}

[class$="_article-content"] {
    font-size: 16px;
    color: #444;
    line-height: 1.8;
}

[class$="_article-content"] p {
    margin-bottom: 20px;
}

[class$="_faq"] {
    padding: 80px 24px;
    background: #fff;
}

[class$="_faq-inner"] {
    max-width: 900px;
    margin: 0 auto;
}

[class$="_faq-list"] {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

[class$="_faq-item"] {
    background: #fff;
    border: 1px solid #eee;
    border-radius: 12px;
    overflow: hidden;
}

[class$="_faq-question"] {
    width: 100%;
    padding: 20px 24px;
    background: #f8f9fa;
    border: none;
    font-size: 16px;
    font-weight: 600;
    color: #075E54;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    text-align: left;
    transition: background 0.3s;
}

[class$="_faq-question"]:hover {
    background: #f0f4f3;
}

[class$="_faq-icon"] {
    font-size: 24px;
    color: #25D366;
    font-weight: 400;
    line-height: 1;
}

[class$="_faq-answer"] {
    padding: 20px 24px;
    color: #555;
    line-height: 1.8;
    font-size: 15px;
}

[class$="_tutorials"] {
    padding: 80px 24px;
    background: #f8f9fa;
}

[class$="_tutorials-inner"] {
    max-width: 1200px;
    margin: 0 auto;
}

[class$="_tutorials-grid"] {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

[class$="_tutorial-card"] {
    background: #fff;
    padding: 32px 24px;
    border-radius: 12px;
    text-align: center;
    transition: all 0.3s;
    border-top: 4px solid #25D366;
    display: block;
}

[class$="_tutorial-card"]:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 32px rgba(0,0,0,0.08);
}

[class$="_tutorial-icon"] {
    font-size: 48px;
    margin-bottom: 16px;
}

[class$="_tutorial-title"] {
    font-size: 17px;
    font-weight: 600;
    color: #075E54;
    margin-bottom: 8px;
    line-height: 1.4;
}

[class$="_tutorial-desc"] {
    font-size: 14px;
    color: #888;
}

[class$="_links"] {
    padding: 60px 24px;
    background: #fff;
}

[class$="_links-inner"] {
    max-width: 1200px;
    margin: 0 auto;
}

[class$="_links-list"] {
    margin-top: 30px;
    text-align: left;
}

[class$="_links-list"] ul {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-wrap: wrap;
    justify-content: flex-start;
    gap: 12px;
}

[class$="_links-list"] li {
    margin: 0;
}

[class$="_links-list"] a {
    background: #f8f9fa;
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 14px;
    color: #555;
    transition: all 0.3s;
    border: 1px solid #eee;
    display: inline-block;
}

[class$="_links-list"] a:hover {
    background: #25D366;
    color: #fff;
    transform: translateY(-2px);
}

[class$="_download"] {
    padding: 60px 24px;
    background: linear-gradient(135deg, #075E54 0%, #128C7E 100%);
    text-align: center;
}

[class$="_download-inner"] {
    max-width: 800px;
    margin: 0 auto;
}

[class$="_btn-download"] {
    display: inline-block;
    background: #fff;
    color: #075E54;
    padding: 18px 48px;
    border-radius: 30px;
    font-size: 18px;
    font-weight: 700;
    transition: all 0.3s;
}

[class$="_btn-download"]:hover {
    transform: translateY(-3px);
    box-shadow: 0 16px 40px rgba(0,0,0,0.2);
}

[class$="_footer"] {
    background: #1a1a1a;
    padding: 60px 24px 30px;
    margin-top: auto;
}

[class$="_footer-inner"] {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}

[class$="_footer-col"] {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

[class$="_footer-title"] {
    font-size: 16px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 8px;
}

[class$="_footer-desc"] {
    font-size: 14px;
    color: #999;
    line-height: 1.7;
}

[class$="_footer-link"] {
    font-size: 14px;
    color: #aaa;
    transition: color 0.3s;
}

[class$="_footer-link"]:hover {
    color: #25D366;
}

[class$="_footer-bottom"] {
    max-width: 1200px;
    margin: 0 auto;
    padding-top: 30px;
    border-top: 1px solid #333;
    text-align: center;
}

[class$="_footer-bottom"] p {
    font-size: 13px;
    color: #777;
}

[class$="_footer-bottom"] a {
    color: #25D366;
}

@media (max-width: 1024px) {
    [class$="_features-grid"] {
        grid-template-columns: repeat(2, 1fr);
    }
    
    [class$="_articles-grid"] {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    [class$="_header-inner"] {
        flex-direction: column;
        gap: 16px;
    }
    
    [class$="_nav"] {
        flex-wrap: wrap;
        justify-content: center;
        gap: 16px;
    }
    
    [class$="_hero"] {
        padding: 60px 20px;
    }
    
    [class$="_hero-title"] {
        font-size: 32px;
    }
    
    [class$="_hero-desc"] {
        font-size: 15px;
    }
    
    [class$="_hero-buttons"] {
        flex-direction: column;
        align-items: center;
    }
    
    [class$="_features-grid"] {
        grid-template-columns: 1fr;
    }
    
    [class$="_articles-grid"] {
        grid-template-columns: 1fr;
    }
    
    [class$="_steps-list"] {
        flex-direction: column;
        align-items: center;
    }
    
    [class$="_step-item"] {
        max-width: 100%;
    }
    
    [class$="_footer-inner"] {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    [class$="_tutorials-grid"] {
        grid-template-columns: 1fr;
    }
    
    [class$="_links-list"] {
        flex-direction: column;
        align-items: center;
    }
    
    [class$="_link-item"] {
        width: 200px;
        text-align: center;
    }
    
    [class$="_section-title"] {
        font-size: 26px;
    }
}

@media (max-width: 480px) {
    [class$="_nav"] {
        gap: 12px;
    }
    
    [class$="_nav"] a {
        font-size: 14px;
    }
    
    [class$="_nav-btn"] {
        padding: 8px 20px;
        font-size: 14px;
    }
    
    [class$="_hero-title"] {
        font-size: 26px;
    }
    
    [class$="_btn-primary"],
    [class$="_btn-secondary"] {
        padding: 14px 28px;
        font-size: 15px;
    }
}