/* 重置和基础样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #ffffff;
}

/* 容器 */
.container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 导航栏 */
.navbar {
    background: #e50914;
    border-bottom: 1px solid #d40813;
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
}

.nav-container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 60px;
}

.nav-logo {
    display: flex;
    align-items: center;
    font-size: 20px;
    font-weight: bold;
    color: white;
}

.logo-icon {
    width: 32px;
    height: 32px;
    background: white;
    color: #e50914;
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 8px;
    font-size: 20px;
    font-weight: bold;
}

.logo-text {
    color: white;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 25px;
}

.nav-menu a {
    color: white;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
    padding: 5px 0;
}

.nav-menu a:hover,
.nav-menu a.active {
    color: #ffcccc;
}

/* 主内容区域 */
main {
    padding-top: 60px;
}


/* 公告板块 */
.announcement {
    padding: 30px 0;
    border-bottom: 1px solid #e0e0e0;
}

.announcement h2 {
    color: #000000;
    margin-bottom: 15px;
    font-size: 1.5rem;
    text-align: center;
}

.announcement-content {
    background: #f9f9f9;
    padding: 20px;
    border-left: 3px solid #e50914;
}

.announcement-content p {
    margin-bottom: 10px;
    line-height: 1.6;
    color: #555;
}

.notice-warning {
    color: #856404;
    background-color: #fff9e6;
    padding: 12px;
    border: 1px solid #ffeaa7;
    margin-top: 15px;
}

/* 账号共享 */
.accounts {
    padding: 50px 0;
    background: #f8f8f8;
}

.accounts h2 {
    color: #000000;
    margin-bottom: 5px;
    font-size: 1.6rem;
    text-align: center;
}

.share-time {
    text-align: center;
    font-size: 0.9rem;
    color: #666;
    margin-bottom: 15px;
    font-weight: 500;
}

.section-desc {
    text-align: center;
    color: #666;
    margin-bottom: 35px;
    font-size: 1rem;
}

.accounts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 25px;
}

.account-card {
    background: white;
    border: 1px solid #e0e0e0;
    padding: 25px;
}

.account-card h3 {
    color: #000000;
    margin-bottom: 20px;
    text-align: center;
    font-size: 1.2rem;
    font-weight: 600;
}

.account-info {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.info-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 12px;
    background: #f9f9f9;
    border: 1px solid #e0e0e0;
}

.info-item label {
    font-weight: 600;
    color: #333;
    min-width: 50px;
    font-size: 0.95rem;
}

.info-item span {
    flex: 1;
    margin: 0 8px;
    font-family: 'Courier New', monospace;
    background: white;
    padding: 4px 8px;
    border: 1px solid #ddd;
    font-size: 0.9rem;
}

.copy-btn {
    background: #e50914;
    color: white;
    border: none;
    padding: 6px 12px;
    cursor: pointer;
    font-size: 0.85rem;
    font-weight: 500;
    transition: background-color 0.3s ease;
}

.copy-btn:hover {
    background: #cc0812;
}

/* 账号购买 */
.purchase {
    padding: 30px 0;
    background: white;
}

.purchase h2 {
    color: #000000;
    margin-bottom: 20px;
    font-size: 1.6rem;
    text-align: center;
}

.purchase-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 20px;
}

.purchase-card {
    background: white;
    border: 1px solid #e0e0e0;
    padding: 20px;
    text-align: center;
}

.purchase-card h3 {
    color: #000000;
    font-size: 1.3rem;
    margin-bottom: 10px;
}

.price {
    font-size: 2.2rem;
    font-weight: 600;
    color: #e50914;
    margin-bottom: 15px;
}

.price span {
    font-size: 0.8rem;
    color: #666;
}

.features {
    list-style: none;
    margin-bottom: 20px;
    text-align: left;
}

.features li {
    margin-bottom: 6px;
    padding: 3px 0;
    border-bottom: 1px solid #f0f0f0;
    font-size: 0.9rem;
    color: #555;
}

.purchase-btn {
    background: #e50914;
    color: white;
    border: none;
    padding: 10px 25px;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.3s ease;
    text-decoration: none;
    display: inline-block;
    text-align: center;
}

.purchase-btn:hover {
    background: #cc0812;
}

/* 使用教程 */
.tutorial {
    padding: 50px 0;
    background: #f8f8f8;
}

.tutorial h2 {
    color: #000000;
    margin-bottom: 35px;
    font-size: 1.6rem;
    text-align: center;
}

.tutorial-steps {
    display: flex;
    flex-direction: column;
    gap: 15px;
    max-width: 800px;
    margin: 0 auto;
}

.step {
    display: flex;
    align-items: flex-start;
    gap: 15px;
    background: white;
    padding: 20px;
    border-left: 3px solid #e50914;
}

.step-number {
    width: 40px;
    height: 40px;
    background: #e50914;
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    font-weight: 600;
    flex-shrink: 0;
}

.step-content h3 {
    color: #000000;
    margin-bottom: 8px;
    font-size: 1.1rem;
    font-weight: 600;
}

.step-content p {
    color: #666;
    line-height: 1.6;
}

.step-content a {
    color: #e50914;
    text-decoration: none;
    font-weight: 500;
}

.step-content a:hover {
    text-decoration: underline;
}

/* 国内使用注意事项 */
.notes {
    padding: 50px 0;
    background: white;
}

.notes h2 {
    color: #000000;
    margin-bottom: 35px;
    font-size: 1.6rem;
    text-align: center;
}

.notes-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 25px;
}

.note-card {
    background: #f9f9f9;
    padding: 20px;
    border: 1px solid #e0e0e0;
}

.note-card.full-width {
    grid-column: 1 / -1;
    background: #fff9e6;
    border-color: #856404;
}

.note-card h3 {
    color: #000000;
    margin-bottom: 12px;
    font-size: 1.1rem;
    font-weight: 600;
}

.note-card ul {
    list-style: none;
    padding: 0;
}

.note-card li {
    margin-bottom: 6px;
    padding-left: 12px;
    position: relative;
    line-height: 1.6;
    color: #555;
}

.note-card li::before {
    content: '•';
    color: #e50914;
    position: absolute;
    left: 0;
}

.warning-content {
    background: white;
    padding: 18px;
    border: 2px solid #856404;
}

.warning-list {
    margin: 12px 0;
}

.warning-list li {
    margin-bottom: 6px;
    color: #721c24;
    font-weight: 500;
}

.warning-text {
    color: #721c24;
    font-weight: 600;
    margin-top: 12px;
    font-size: 0.9rem;
}

/* 底部版权 */
.footer {
    background: #f8f8f8;
    border-top: 1px solid #e0e0e0;
    padding: 25px 0;
    text-align: center;
}

.footer p {
    margin-bottom: 8px;
    color: #666;
    font-size: 0.85rem;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .nav-container {
        flex-direction: column;
        height: auto;
        padding: 12px 20px;
    }

    .nav-menu {
        margin-top: 12px;
        gap: 12px;
        flex-wrap: wrap;
        justify-content: center;
    }


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

    .account-card {
        padding: 20px;
    }

    .step {
        flex-direction: column;
        text-align: center;
        gap: 12px;
    }

    .step-number {
        align-self: center;
    }

    .notes-content {
        grid-template-columns: 1fr;
    }

    .note-card.full-width {
        grid-column: 1;
    }

    .purchase-card {
        padding: 15px;
    }

    .price {
        font-size: 2rem;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }

    .nav-menu {
        gap: 8px;
    }

    .info-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 6px;
    }

    .copy-btn {
        align-self: flex-end;
        padding: 5px 10px;
    }


    .note-card {
        padding: 16px;
    }

    .warning-content {
        padding: 12px;
    }
}