* { margin: 0; padding: 0; box-sizing: border-box; }
body { 
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif; 
    line-height: 1.6; 
    overflow-x: hidden; 

    -webkit-user-select: none; /* Chrome/Safari */
    -moz-user-select: none;    /* Firefox */
    -ms-user-select: none;     /* IE/Edge */
    user-select: none;         /* 标准语法 */
}
a { text-decoration: none; display: inline-flex; align-items: center; transition: 0.3s; }
ul { list-style: none; }
img { 
    max-width: 100%; height: auto; display: block; 
  
    -webkit-user-drag: none; 
    pointer-events: none;
}

.container { max-width: 1100px; margin: 0 auto; padding: 0 20px; }

/* --- 头部布局 --- */
header { padding: 15px 0; position: sticky; top: 0; z-index: 100; border-bottom: 1px solid transparent; }

.nav-box { 
    display: flex; 
    justify-content: space-between; 
    align-items: center; 
    width: 100%;
}

.logo { 
    font-size: 26px; 
    font-weight: 900; 
    letter-spacing: 1px; 
    display: flex; 
    align-items: center; 
    flex-shrink: 0; 
    white-space: nowrap;
}


.nav-links { 
    display: flex; 
    align-items: center; 
    flex-direction: row; 
}

.nav-links a { 
    margin-left: 25px; 
    font-size: 14px; 
    font-weight: 500; 
    position: relative; 
    white-space: nowrap;
}


.nav-links a svg, 
.nav-links a img { 
    width: 18px !important;    
    height: 18px !important;   
    margin-right: 8px;         
    object-fit: contain;       
    flex-shrink: 0;            
    display: block;
}

/* --- Hero --- */
.hero { 
    text-align: center; padding: 120px 0 100px; position: relative; overflow: hidden; min-height: 450px; 
    background: linear-gradient(to bottom, rgba(13,13,13,0.5), rgba(13,13,13,0.95), rgba(13,13,13,1)), url('../images/banner.png') center center / cover no-repeat;
    box-shadow: inset 0 0 100px rgba(0,0,0,0.8);
    background-color: #0d0d0d; 
}
h1 { font-size: 3.2rem; margin-bottom: 25px; font-weight: 800; position: relative; z-index: 2; }
.hero p { font-size: 1.2rem; margin-bottom: 45px; position: relative; z-index: 2; }

/* 按钮与板块 */
.btn-group { display: flex; justify-content: center; gap: 25px; flex-wrap: wrap; position: relative; z-index: 2; }
.btn { padding: 16px 45px; border-radius: 50px; font-weight: bold; font-size: 17px; min-width: 220px; cursor: pointer; display: inline-flex; align-items: center; justify-content: center; transition: 0.4s; }
.btn svg, .btn img { margin-right: 10px; width: 20px; height: 20px; object-fit: contain; }
section { padding: 80px 0; position: relative; scroll-margin-top: 80px; border-bottom: 1px solid transparent; }
h2 { font-size: 2rem; margin-bottom: 40px; text-align: center; position: relative; font-weight: 700; }
h2::after { content: '♠'; display: block; width: 40px; height: 40px; line-height: 40px; margin: 20px auto 0; border-radius: 50%; font-size: 1.2rem; text-align: center; }
.content-card { padding: 50px; border-radius: 16px; position: relative; overflow: hidden; border: 1px solid transparent; }
.step-list { counter-reset: step-counter; padding-left: 10px; }
.step-list li { position: relative; margin-bottom: 25px; padding-left: 50px; font-size: 1.05rem; }
.step-list li::before { counter-increment: step-counter; content: counter(step-counter); position: absolute; left: 0; top: -2px; width: 32px; height: 32px; line-height: 32px; text-align: center; font-weight: bold; border-radius: 50%; }
.guide-intro { font-size: 1.1rem; margin-bottom: 30px; text-align: center; }
.feature-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 35px; margin-top: 50px; }
.feature-item { text-align: center; padding: 30px; border-radius: 12px; transition: 0.4s; border: 1px solid transparent; }
.feature-img-box { width: 100%; height: 180px; overflow: hidden; border-radius: 8px; margin-bottom: 25px; position: relative; border: 1px solid transparent; }
.feature-img-box img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.6s; position: relative; z-index: 1; }
.feature-item:hover .feature-img-box img { transform: scale(1.08); }
.feature-item h3 { font-size: 1.3rem; margin-bottom: 15px; font-weight: bold; }
.feature-item p { font-size: 0.95rem; line-height: 1.7; }
.club-premium-box { position: relative; z-index: 1; border-radius: 16px; padding: 60px; display: flex; align-items: center; justify-content: space-between; gap: 50px; border: 1px solid transparent; }
.club-info h3 { font-size: 2rem; margin-bottom: 25px; font-weight: 800; }
.club-cta { flex-shrink: 0; text-align: center; padding: 40px; border-left: 2px solid transparent; }
.club-features-list { margin-top: 10px; }
.club-features-list li { margin-bottom: 25px; font-size: 1.05rem; display: flex; align-items: flex-start; }
.club-icon { width: 22px; height: 22px; margin-right: 15px; flex-shrink: 0; margin-top: 3px; }
.club-text { display: flex; flex-direction: column; }
.club-text strong { margin-bottom: 4px; font-size: 1.1rem; line-height: 1.2; }
.club-text span { font-size: 0.95rem; line-height: 1.5; }
.news-module { padding: 60px 0; border-top: 1px solid transparent; }
.news-list { max-width: 850px; margin: 0 auto; border-radius: 10px; padding: 10px 30px; border: 1px solid transparent; }
.news-item { display: flex; justify-content: space-between; padding: 18px 0; align-items: center; transition: 0.3s; border-bottom: 1px solid transparent; }
.news-item:hover { padding-left: 10px; }
.news-title { font-size: 16px; flex: 1; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; padding-right: 20px; font-weight: 500; }
.news-tag { padding: 3px 8px; font-size: 12px; border-radius: 4px; margin-right: 12px; border: 1px solid transparent; }
.news-date { font-size: 13px; font-family: monospace; }
.more-news { text-align: center; margin-top: 40px; }
.more-news a { font-size: 15px; padding: 10px 30px; border-radius: 30px; border: 1px solid transparent; }
footer { padding: 60px 0 100px; text-align: center; font-size: 13px; border-top: 1px solid transparent; }
.sticky-footer { position: fixed; bottom: 0; left: 0; width: 100%; padding: 15px 20px; display: none; border-top: 1px solid transparent; z-index: 999; }
.sticky-btn { display: flex; align-items: center; justify-content: center; width: 100%; text-align: center; padding: 14px; border-radius: 50px; font-weight: 900; font-size: 16px; }
.sticky-btn img, .sticky-btn svg { width: 24px !important; height: 24px !important; flex-shrink: 0; margin-right: 8px; object-fit: contain; display: block; }


.mobile-menu-btn { display: none; flex-direction: column; justify-content: space-between; width: 28px; height: 20px; cursor: pointer; z-index: 102; }
.mobile-menu-btn span { display: block; width: 100%; height: 2px; border-radius: 2px; transition: 0.3s; transform-origin: center; }
.mobile-menu-btn.active span:nth-child(1) { transform: translateY(9px) rotate(45deg); }
.mobile-menu-btn.active span:nth-child(2) { opacity: 0; }
.mobile-menu-btn.active span:nth-child(3) { transform: translateY(-9px) rotate(-45deg); }


@media (max-width: 768px) {
    header .nav-box { flex-direction: row; justify-content: space-between; padding: 15px 20px; }
    .logo { margin-bottom: 0; font-size: 22px; }
    .mobile-menu-btn { display: flex; }
    
    .nav-links { 
        position: absolute; top: 100%; left: 0; width: 100%; 
        flex-direction: column !important; 
        align-items: flex-start;
        padding: 20px 20px 30px;
        background: #0d0d0d; 
        border-top: 1px solid transparent; border-bottom: 1px solid transparent;
        opacity: 0; visibility: hidden; transform: translateY(-20px);
        transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        margin-left: 0; overflow: hidden; height: auto;
    }
    .nav-links.active { opacity: 1; visibility: visible; transform: translateY(0); }

    .nav-links a { margin: 0 0 12px 0; width: 100%; padding: 14px 20px; font-size: 15px; font-weight: 600; border: 1px solid transparent; border-radius: 10px; justify-content: flex-start; }
    
    .hero { padding: 100px 0 80px; min-height: 450px; }
    .sticky-footer { display: block; }
    .club-premium-box { flex-direction: column; padding: 35px; gap: 30px; }
    .club-cta { border-left: none; border-top: 1px solid transparent; padding: 30px 0 0 0; width: 100%; }
}