/* ========== 公共玻璃态与粒子背景样式 ========== */
/* 全局背景与字体（仅在 .custom-promo-content 内生效） */
.custom-promo-content {
    font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: radial-gradient(circle at 10% 20%, rgb(5, 15, 30) 0%, rgb(2, 8, 20) 100%);
    color: #edf2ff;
    padding: 2rem 0;
    margin-top: 0;
    position: relative;
    z-index: 2;
}

/* 内容容器 */
.promo-container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 1.8rem;
}

/* 粒子画布（全屏固定） */
#particle-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 9999;
}

/* 特色卡片布局（三个） */
.features {
    display: flex;
    flex-wrap: wrap;
    gap: 1.8rem;
    margin-bottom: 4rem;
    justify-content: center;
}
.feature-item {
    background: rgba(10, 20, 35, 0.6);
    backdrop-filter: blur(12px);
    border-radius: 2rem;
    padding: 1.8rem 1.2rem;
    flex: 1;
    min-width: 210px;
    text-align: center;
    border: 1px solid rgba(59,130,246,0.3);
    transition: all 0.3s ease;
}
.feature-item:hover {
    transform: translateY(-6px);
    border-color: rgba(59,130,246,0.8);
    background: rgba(15, 30, 55, 0.7);
    box-shadow: 0 20px 30px -12px rgba(0,0,0,0.5);
}
.feature-icon {
    font-size: 2.5rem;
    color: #3b82f6;
    margin-bottom: 1rem;
}
.feature-item h3 {
    font-size: 1.4rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}
.feature-item p {
    font-size: 0.9rem;
    color: #cbd5e6;
}

/* 主标题 */
.hero-section {
    text-align: center;
    margin: 2rem 0 2rem;
}
.hero-section h2 {
    font-size: 2.8rem;
    font-weight: 800;
    background: linear-gradient(145deg, #f0f9ff, #7aa2f7);
    background-clip: text;
    -webkit-background-clip: text;
    color: transparent;
    letter-spacing: -0.02em;
}
.hero-section p {
    color: #a0b3d9;
    margin-top: 0.8rem;
    font-size: 1.1rem;
}

/* 三种方法网格 */
.methods-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 2rem;
    margin: 3rem 0 2.5rem;
}
.method-card {
    background: rgba(12, 22, 42, 0.7);
    backdrop-filter: blur(16px);
    border-radius: 2rem;
    flex: 1;
    min-width: 260px;
    padding: 2rem 1.5rem;
    border: 1px solid rgba(59,130,246,0.35);
    transition: all 0.25s;
    text-align: center;
}
.method-card:hover {
    border-color: #3b82f6;
    transform: scale(1.01);
    background: rgba(20, 35, 60, 0.8);
    box-shadow: 0 25px 35px -12px rgba(0,0,0,0.4);
}
.method-badge {
    background: rgba(59,130,246,0.2);
    display: inline-block;
    padding: 0.25rem 1rem;
    border-radius: 40px;
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 0.5px;
    margin-bottom: 1rem;
    backdrop-filter: blur(2px);
}
.method-card h3 {
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
}
.method-desc {
    color: #cbd5f0;
    margin-bottom: 1.6rem;
    font-size: 0.95rem;
}
.method-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: linear-gradient(105deg, #2563eb, #1e40af);
    color: white;
    padding: 0.7rem 1.8rem;
    border-radius: 60px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.2s;
    border: none;
    font-size: 0.9rem;
    cursor: pointer;
    box-shadow: 0 4px 12px rgba(0,0,0,0.2);
}
.method-btn:hover {
    background: linear-gradient(105deg, #3b82f6, #1e3a8a);
    transform: scale(0.98);
    box-shadow: 0 6px 16px rgba(37,99,235,0.4);
}

/* 佣金说明区域 */
.commission-area {
    background: linear-gradient(120deg, rgba(0,20,40,0.7), rgba(10,25,55,0.8));
    backdrop-filter: blur(12px);
    border-radius: 2.5rem;
    padding: 2.5rem 2rem;
    margin: 3rem 0;
    border: 1px solid rgba(59,130,246,0.4);
}
.commission-header {
    text-align: center;
}
.commission-header h3 {
    font-size: 2rem;
    font-weight: 700;
}
.commission-amount {
    font-size: 3.5rem;
    font-weight: 800;
    background: linear-gradient(135deg, #f97316, #facc15);
    background-clip: text;
    -webkit-background-clip: text;
    color: transparent;
    margin: 0.5rem 0;
}
.steps-row {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 1.5rem;
    margin: 2rem 0;
}
.step-card {
    background: rgba(0, 0, 0, 0.35);
    backdrop-filter: blur(8px);
    flex: 1;
    min-width: 170px;
    padding: 1.2rem 0.8rem;
    border-radius: 1.8rem;
    text-align: center;
    border: 1px solid rgba(255,255,255,0.1);
}
.step-number {
    background: #f97316;
    width: 36px;
    height: 36px;
    margin: 0 auto 0.8rem;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 60px;
    font-weight: 800;
}
.step-card h4 {
    font-weight: 700;
    margin-bottom: 0.3rem;
}
.step-card p {
    font-size: 0.8rem;
    opacity: 0.85;
}
.btn-glow {
    background: linear-gradient(95deg, #f97316, #facc15);
    padding: 0.9rem 2rem;
    font-size: 1.1rem;
    border-radius: 60px;
    font-weight: 700;
    color: #0f172a;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    transition: all 0.2s;
    box-shadow: 0 8px 20px rgba(249,115,22,0.3);
}
.btn-glow:hover {
    transform: translateY(-2px);
    filter: brightness(1.05);
    box-shadow: 0 12px 24px rgba(249,115,22,0.5);
}
.stats {
    text-align: center;
    margin-top: 1.5rem;
    font-size: 0.85rem;
    background: rgba(255,255,255,0.05);
    display: inline-block;
    width: auto;
    padding: 0.4rem 1.2rem;
    border-radius: 60px;
    backdrop-filter: blur(4px);
}

/* VIP高亮条 */
.vip-highlight {
    background: rgba(0,20,40,0.5);
    border-radius: 2rem;
    padding: 1.2rem 1.8rem;
    margin: 1.5rem 0 0.8rem;
    border: 1px solid rgba(59,130,246,0.3);
    backdrop-filter: blur(8px);
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
}
.price-tag {
    background: #f97316;
    padding: 0.2rem 0.9rem;
    border-radius: 40px;
    font-weight: bold;
    font-size: 0.8rem;
}

/* 温馨提示 */
.notice-modern {
    background: rgba(0, 0, 0, 0.45);
    backdrop-filter: blur(12px);
    border-radius: 1.8rem;
    padding: 1.2rem 1.8rem;
    margin: 2rem 0 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
    border-left: 4px solid #f59e0b;
}
.notice-left {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
}
.vta-badge-large {
    background: linear-gradient(145deg, #f97316, #ea580c);
    border-radius: 14px;
    padding: 0.3rem 0.7rem;
    font-weight: 800;
    font-size: 0.9rem;
    letter-spacing: 1px;
    color: white;
    box-shadow: 0 2px 8px rgba(0,0,0,0.3);
    border: 1px solid rgba(255,215,0,0.5);
    font-family: monospace;
}
.vta-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(145deg, #2563eb, #1e3a8a);
    border-radius: 12px;
    padding: 0.2rem 0.5rem;
    font-weight: 800;
    font-size: 0.7rem;
    letter-spacing: 0.5px;
    color: white;
    box-shadow: 0 2px 6px rgba(0,0,0,0.2);
    border: 1px solid rgba(255,255,255,0.2);
    font-family: monospace;
}

/* 响应式 */
@media (max-width: 680px) {
    .hero-section h2 {
        font-size: 1.9rem;
    }
    .commission-amount {
        font-size: 2.5rem;
    }
    #particle-canvas {
        display: none;
    }
}