:root {
    --primary-color: #ff6b81; /* 糖果粉色 */
    --secondary-color: #ff4757;
    --text-main: #2f3542;
    --text-light: #747d8c;
    --bg-color: #f1f2f6;
    --white: #ffffff;
    --border-color: #dfe4ea;
    --shadow: 0 4px 6px rgba(0,0,0,0.05);
    --transition: all 0.3s ease;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    color: var(--text-main);
    background-color: var(--bg-color);
    line-height: 1.6;
}

a {
    text-decoration: none;
    color: var(--primary-color);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 按钮样式 */
.btn {
    display: inline-block;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: var(--white);
    padding: 12px 30px;
    border-radius: 30px;
    font-size: 1.1rem;
    font-weight: 600;
    text-align: center;
    transition: var(--transition);
    border: none;
    cursor: pointer;
    box-shadow: 0 4px 15px rgba(255, 107, 129, 0.4);
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(255, 107, 129, 0.6);
}

.btn-large {
    padding: 15px 40px;
    font-size: 1.2rem;
}

/* 导航栏 */
header {
    background-color: var(--white);
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 100;
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.logo {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--text-main);
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav-links {
    display: flex;
    gap: 30px;
    align-items: center;
}

.nav-links a {
    color: var(--text-main);
    font-weight: 500;
    font-size: 1.05rem;
    transition: var(--transition);
}

.nav-links a:hover {
    color: var(--primary-color);
}

/* 主视觉区 Hero Section */
.hero {
    padding: 100px 20px;
    text-align: center;
    background: linear-gradient(to bottom, #ffffff, #f1f2f6);
}

.hero h1 {
    font-size: 3.5rem;
    margin-bottom: 20px;
    color: var(--text-main);
}

.hero p {
    font-size: 1.2rem;
    color: var(--text-light);
    margin-bottom: 40px;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

/* 通用区块标题 */
.section-title {
    text-align: center;
    font-size: 2.2rem;
    margin-bottom: 50px;
}

/* 核心优势卡片 */
.features {
    padding: 80px 0;
    background-color: var(--white);
}

.grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.card {
    background: var(--white);
    border-radius: 12px;
    padding: 40px 30px;
    text-align: center;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.08);
}

.card-icon {
    font-size: 3rem;
    margin-bottom: 20px;
}

.card h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
}

/* 流媒体与AI支持 */
.media-ai {
    padding: 80px 0;
    background-color: var(--bg-color);
}

.tags-container {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 15px;
    margin-bottom: 40px;
}

.tag {
    background-color: var(--white);
    padding: 10px 25px;
    border-radius: 30px;
    font-weight: 600;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow);
}

/* 价格对比表 */
.pricing {
    padding: 80px 0;
    background-color: var(--white);
}

.price-card {
    background: var(--white);
    border-radius: 12px;
    padding: 40px;
    text-align: center;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow);
    display: flex;
    flex-direction: column;
}

.price-card.popular {
    border: 2px solid var(--primary-color);
    transform: scale(1.05);
    position: relative;
}

.popular-badge {
    position: absolute;
    top: -15px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--primary-color);
    color: var(--white);
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: bold;
}

.price {
    font-size: 3rem;
    font-weight: bold;
    color: var(--primary-color);
    margin: 20px 0;
}

.price span {
    font-size: 1rem;
    color: var(--text-light);
}

.price-features {
    list-style: none;
    margin-bottom: 30px;
    flex-grow: 1;
}

.price-features li {
    padding: 10px 0;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-main);
}

/* 用户评价 */
.reviews {
    padding: 80px 0;
    background-color: var(--bg-color);
}

.review-card {
    background: var(--white);
    border-radius: 12px;
    padding: 30px;
    border: 1px solid var(--border-color);
}

.review-text {
    font-style: italic;
    margin-bottom: 20px;
    color: var(--text-main);
}

.reviewer {
    font-weight: bold;
    color: var(--primary-color);
}

/* FAQ */
.faq {
    padding: 80px 0;
    background-color: var(--white);
}

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

.faq-item {
    background: var(--bg-color);
    padding: 25px;
    border-radius: 8px;
}

.faq-item h4 {
    font-size: 1.2rem;
    margin-bottom: 10px;
}

.faq-item p {
    color: var(--text-light);
}

/* 页脚 */
footer {
    background-color: #2f3542;
    color: var(--white);
    padding: 50px 0 20px;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-links a {
    color: #ced6e0;
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--white);
}

.copyright {
    text-align: center;
    color: #747d8c;
    border-top: 1px solid #57606f;
    padding-top: 20px;
}

/* 简单页面 (About, Terms等) 样式 */
.page-content {
    padding: 80px 20px;
    max-width: 800px;
    margin: 0 auto;
    background: var(--white);
    min-height: calc(100vh - 70px - 150px); /* 减去头部和底部的粗略高度 */
}

.page-content h1 {
    margin-bottom: 30px;
    color: var(--primary-color);
    border-bottom: 2px solid var(--border-color);
    padding-bottom: 10px;
}

.page-content h2 {
    margin: 25px 0 15px;
}

.page-content p {
    margin-bottom: 15px;
}

.page-content ul {
    margin-left: 20px;
    margin-bottom: 20px;
}

.page-content li {
    margin-bottom: 10px;
}

/* 响应式设计 - 媒体查询 */
@media (max-width: 992px) {
    .grid-3 {
        grid-template-columns: repeat(2, 1fr);
    }
    .price-card.popular {
        transform: scale(1);
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none !important;
    }
    .hero h1 {
        font-size: 2.2rem;
    }
    .hero p {
        font-size: 1rem;
    }
    .grid-3 {
        grid-template-columns: 1fr;
    }
    .faq-grid {
        grid-template-columns: 1fr;
    }
    .footer-links {
        flex-direction: column;
        align-items: center;
        gap: 20px;
    }
    /* 增加手机端按钮点击区域 */
    .btn {
        display: block;
        width: 100%;
        box-sizing: border-box;
        padding: 16px 20px;
    }
    .nav-container .btn {
        width: auto;
        padding: 8px 20px;
    }
}

/* --- ���������� BUBBLEGUM �Ӿ���񸲸� --- */
:root {
    --primary-color: #F9A8D4 !important; /* �����Ƿ� */
    --secondary-color: #93C5FD !important; /* ��׺�� */
    --bg-color: transparent !important; /* ͸������ʾ�ײ����� */
    --white: rgba(255, 255, 255, 0.85) !important; /* ë������͸���� */
    --border-color: rgba(253, 240, 247, 0.8) !important;
    --shadow: 0 4px 16px rgba(249, 168, 212, 0.15) !important;
}

body {
    background-color: transparent !important;
}

header {
    background-color: rgba(255, 255, 255, 0.85) !important;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
}

/* �Ƴ�ԭ��ʵɫ/���䱳����ʹ���ݱ���͸�� */
.hero, .features, .media-ai, .pricing, .reviews, .faq {
    background: transparent !important;
    background-color: transparent !important;
}

/* ҳ����ɫ�ػ棬������ӯ�� */
footer {
    background-color: rgba(253, 240, 247, 0.85) !important;
    color: var(--text-main) !important;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
}

.footer-links a {
    color: var(--text-main) !important;
}

.footer-links a:hover {
    color: var(--primary-color) !important;
}

.copyright {
    color: var(--text-light) !important;
    border-top: 1px solid var(--border-color) !important;
}

/* �����дμ�ҳ���������Ҳ����ë����Ч���������������ݱ��� */
.page-content {
    background: var(--white) !important;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow);
    border-radius: 12px;
}

/* SEO Phase 2 Fixes */
section[id], div[id] { scroll-margin-top: 80px; }
details.faq-item > summary { cursor: pointer; list-style: none; outline: none; }
details.faq-item > summary::-webkit-details-marker { display: none; }
details.faq-item > summary h4 { display: inline-block; margin: 0; }

/* --- FAQ Accordion Premium Fix --- */
details.faq-item {
    background: rgba(255, 255, 255, 0.75) !important;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    padding: 20px 25px !important;
    border-radius: 12px !important;
    border: 1px solid rgba(253, 240, 247, 0.8);
    box-shadow: 0 4px 16px rgba(249, 168, 212, 0.15) !important;
    transition: all 0.3s ease !important;
    margin-bottom: 20px; /* add spacing if needed */
}
details.faq-item:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(249, 168, 212, 0.3) !important;
    border-color: #ff6b81 !important;
}
details.faq-item > summary {
    cursor: pointer !important;
    list-style: none !important;
    outline: none !important;
    display: flex !important;
    justify-content: space-between !important;
    align-items: center !important;
}
details.faq-item > summary::-webkit-details-marker {
    display: none !important;
}
details.faq-item > summary h4 {
    margin: 0 !important;
    font-size: 1.15rem !important;
    color: #2f3542 !important;
    font-weight: 600 !important;
}
details.faq-item > summary::after {
    content: '+' !important;
    font-size: 1.8rem !important;
    color: #ff6b81 !important;
    font-weight: 300 !important;
    transition: transform 0.3s ease !important;
    line-height: 1 !important;
}
details[open].faq-item > summary::after {
    transform: rotate(45deg) !important;
}
details.faq-item p {
    margin-top: 15px !important;
    padding-top: 15px !important;
    border-top: 1px dashed rgba(249, 168, 212, 0.5) !important;
    color: #747d8c !important;
    line-height: 1.7 !important;
    animation: fadeInDown 0.3s ease forwards;
}

@keyframes fadeInDown {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
}