@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700;800&family=Plus+Jakarta+Sans:wght@300;400;500;600;700;800&display=swap');

/* --- 设计系统变量 --- */
:root {
    --bg-dark: #fffdf9;              /* 温暖金砂沙滩白 */
    --bg-darker: #fff7ed;            /* 浅桃色 */
    --primary: #ea580c;              /* 商务日落橘红 */
    --primary-glow: rgba(234, 88, 12, 0.15);
    --secondary: #d97706;            /* 幻彩金 */
    --secondary-glow: rgba(217, 119, 6, 0.15);
    --accent: #10b981;               /* 科技绿（常用于打钩/优势） */
    --accent-glow: rgba(16, 185, 129, 0.15);
    --text-main: #451a03;            /* 浓郁焦糖棕 */
    --text-muted: #7c2d12;           /* 温暖熟褐 */
    --glass-bg: #ffffff;             /* 商务纯白卡片 */
    --glass-border: #fde68a;         /* 暖金边界 */
    --glass-hover-bg: #ffffff;
    --glass-hover-border: #f59e0b;   /* 琥珀金边界 */
    --font-heading: 'Outfit', sans-serif;
    --font-body: 'Plus Jakarta Sans', sans-serif;
    --transition: all 0.25s ease;    /* 静态网页专用快速响应 */
}

/* --- 基础重置 --- */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
    background-color: var(--bg-dark);
}

body {
    font-family: var(--font-body);
    color: var(--text-main);
    background-color: var(--bg-dark);
    min-height: 100vh;
    line-height: 1.6;
    overflow-x: hidden;
    position: relative;
}

/* --- 静态暖金背景 --- */
.dream-bg-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: -10;
    overflow: hidden;
    background: linear-gradient(180deg, #fffbeb 0%, #ffedd5 100%);
}

/* 静态网格线，增加科技感 */
.bg-grid {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -9;
    background-image: 
        linear-gradient(rgba(217, 119, 6, 0.04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(217, 119, 6, 0.04) 1px, transparent 1px);
    background-size: 60px 60px;
    mask-image: radial-gradient(ellipse at center, black, transparent 90%);
    -webkit-mask-image: radial-gradient(ellipse at center, black, transparent 90%);
    pointer-events: none;
}

/* --- 容器与布局 --- */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* --- 导航栏 --- */
header {
    position: sticky;
    top: 0;
    z-index: 100;
    border-bottom: 1px solid var(--glass-border);
    background: rgba(255, 251, 245, 0.85);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    transition: var(--transition);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 4.5rem;
}

.logo {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--text-main);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: linear-gradient(135deg, var(--text-main) 30%, var(--primary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.logo span {
    font-weight: 400;
    opacity: 0.8;
}

.nav-links {
    display: flex;
    gap: 2.2rem;
    list-style: none;
}

.nav-links a {
    color: var(--text-muted);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    transition: var(--transition);
    position: relative;
    padding: 0.25rem 0;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    transition: var(--transition);
    border-radius: 2px;
}

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

.nav-links a:hover::after {
    width: 100%;
}

.nav-btn {
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    border: none;
    color: white;
    padding: 0.6rem 1.4rem;
    border-radius: 30px;
    font-weight: 600;
    font-size: 0.9rem;
    text-decoration: none;
    transition: var(--transition);
    box-shadow: 0 4px 15px var(--primary-glow);
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
}

.nav-btn:hover {
    box-shadow: 0 6px 20px var(--primary-glow);
    filter: brightness(1.08);
}

/* 移动端菜单按钮 */
.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 6px;
    cursor: pointer;
    background: none;
    border: none;
    padding: 4px;
}

.menu-toggle span {
    display: block;
    width: 25px;
    height: 2px;
    background-color: var(--text-main);
    transition: var(--transition);
}

/* --- 商务白卡片通用样式 --- */
.glass-card {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    padding: 2.5rem;
    transition: var(--transition);
    box-shadow: 0 4px 6px -1px rgba(69, 26, 3, 0.05), 0 2px 4px -1px rgba(69, 26, 3, 0.03);
}

.glass-card:hover {
    border-color: var(--glass-hover-border);
    box-shadow: 0 10px 15px -3px rgba(69, 26, 3, 0.08), 0 4px 6px -2px rgba(69, 26, 3, 0.04);
}

/* --- Hero 区域 --- */
.hero {
    padding: 8rem 0 5rem 0;
    text-align: center;
    position: relative;
}

.badge {
    background: rgba(234, 88, 12, 0.07);
    border: 1px solid rgba(234, 88, 12, 0.2);
    color: #c2410c;
    padding: 0.4rem 1.2rem;
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 600;
    display: inline-block;
    margin-bottom: 2rem;
    letter-spacing: 1px;
    text-transform: uppercase;
}

.hero h1 {
    font-family: var(--font-heading);
    font-size: 3.8rem;
    font-weight: 800;
    line-height: 1.15;
    margin-bottom: 1.5rem;
    letter-spacing: -1px;
}

.hero h1 span.gradient-text-1 {
    background: linear-gradient(135deg, #451a03 30%, #7c2d12 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero h1 span.gradient-text-2 {
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 55%, var(--accent) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-muted);
    max-width: 750px;
    margin: 0 auto 3rem auto;
    font-weight: 400;
}

.hero-ctas {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    margin-bottom: 4rem;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    border: none;
    color: white;
    padding: 1.1rem 2.5rem;
    border-radius: 50px;
    font-weight: 700;
    font-size: 1.1rem;
    text-decoration: none;
    transition: var(--transition);
    box-shadow: 0 8px 25px var(--primary-glow);
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
}

.btn-primary:hover {
    box-shadow: 0 12px 30px rgba(234, 88, 12, 0.3);
    filter: brightness(1.08);
}

.btn-secondary {
    background: #ffffff;
    border: 1px solid var(--glass-border);
    color: var(--text-main);
    padding: 1.1rem 2.5rem;
    border-radius: 50px;
    font-weight: 600;
    font-size: 1.1rem;
    text-decoration: none;
    transition: var(--transition);
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
}

.btn-secondary:hover {
    background: var(--bg-darker);
    border-color: var(--glass-hover-border);
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.08);
}

/* 核心特性简述 */
.hero-features {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    margin-top: 2rem;
    text-align: left;
}

.feature-mini {
    padding: 1.8rem;
}

.feature-mini-icon {
    width: 3.2rem;
    height: 3.2rem;
    border-radius: 12px;
    background: rgba(234, 88, 12, 0.08);
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    margin-bottom: 1.2rem;
    border: 1px solid rgba(234, 88, 12, 0.15);
}

.feature-mini h3 {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.feature-mini p {
    font-size: 0.9rem;
    color: var(--text-muted);
}

/* --- 通用章节标题 --- */
.section-title-wrap {
    text-align: center;
    margin-bottom: 4rem;
}

.section-title-wrap h2 {
    font-family: var(--font-heading);
    font-size: 2.6rem;
    font-weight: 800;
    margin-bottom: 1rem;
    letter-spacing: -0.5px;
}

.section-title-wrap p {
    color: var(--text-muted);
    font-size: 1.1rem;
    max-width: 600px;
    margin: 0 auto;
}

/* --- 价格列表 --- */
.pricing-section {
    padding: 6rem 0;
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr); /* 冲上云霄展示4档套餐 */
    gap: 1.5rem;
    align-items: stretch;
}

.pricing-card {
    position: relative;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.pricing-card.featured {
    border-color: var(--primary);
    box-shadow: 0 10px 30px rgba(234, 88, 12, 0.15);
    transform: scale(1.02);
}

.pricing-card.featured::before {
    content: 'POPULAR';
    position: absolute;
    top: -15px;
    left: 50%;
    transform: translateX(-50%);
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    color: white;
    font-size: 0.75rem;
    font-weight: 800;
    padding: 0.3rem 1.2rem;
    border-radius: 20px;
    letter-spacing: 1px;
}

.pricing-card.featured:hover {
    box-shadow: 0 20px 40px rgba(234, 88, 12, 0.25);
}

.pricing-header h3 {
    font-family: var(--font-heading);
    font-size: 1.4rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.pricing-desc {
    color: var(--text-muted);
    font-size: 0.85rem;
    margin-bottom: 1.5rem;
}

.price-wrap {
    display: flex;
    align-items: baseline;
    margin-bottom: 2rem;
}

.price-currency {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-main);
}

.price-amount {
    font-family: var(--font-heading);
    font-size: 3.2rem;
    font-weight: 800;
    color: var(--text-main);
    line-height: 1;
}

.price-period {
    color: var(--text-muted);
    font-size: 0.95rem;
    margin-left: 0.3rem;
}

.pricing-features {
    list-style: none;
    margin-bottom: 2.5rem;
    border-top: 1px solid var(--glass-border);
    padding-top: 1.5rem;
}

.pricing-features li {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    font-size: 0.9rem;
    margin-bottom: 0.8rem;
    color: var(--text-main);
}

.pricing-features li svg {
    color: var(--accent); /* 打钩用科技绿 */
    flex-shrink: 0;
}

.pricing-features li.disabled {
    color: var(--text-muted);
    opacity: 0.55;
}

.pricing-features li.disabled svg {
    color: var(--text-muted);
    opacity: 0.3;
}

.pricing-action-btn {
    width: 100%;
    text-align: center;
    padding: 0.85rem 0;
    border-radius: 14px;
    text-decoration: none;
    font-weight: 700;
    font-size: 0.95rem;
    transition: var(--transition);
    display: block;
}

.featured .pricing-action-btn {
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    color: white;
    box-shadow: 0 4px 15px var(--primary-glow);
}

.featured .pricing-action-btn:hover {
    box-shadow: 0 8px 25px rgba(234, 88, 12, 0.4);
    filter: brightness(1.1);
}

.pricing-card:not(.featured) .pricing-action-btn {
    background: var(--bg-darker);
    border: 1px solid var(--glass-border);
    color: var(--text-main);
}

.pricing-card:not(.featured) .pricing-action-btn:hover {
    background: #ffffff;
    border-color: var(--glass-hover-border);
}

/* --- 文章块 (Blog) --- */
.articles-section {
    padding: 6rem 0;
}

.articles-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.article-card {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    height: 100%;
    padding: 2rem;
}

.article-meta {
    font-size: 0.8rem;
    color: var(--primary);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 0.8rem;
}

.article-card h3 {
    font-family: var(--font-heading);
    font-size: 1.35rem;
    font-weight: 700;
    line-height: 1.4;
    margin-bottom: 1rem;
}

.article-card h3 a {
    color: var(--text-main);
    text-decoration: none;
    transition: var(--transition);
}

.article-card h3 a:hover {
    color: var(--primary);
}

.article-excerpt {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-bottom: 1.5rem;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.article-more {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--primary);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    transition: var(--transition);
    margin-top: auto;
}

.article-more:hover {
    color: var(--secondary);
}

.article-more:hover svg {
    color: var(--secondary);
}

.article-more svg {
    transition: var(--transition);
}

/* --- 文章详情页面样式 --- */
.article-header {
    padding: 6rem 0 3rem 0;
    text-align: center;
}

.article-header-meta {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-bottom: 1.5rem;
}

.article-header h1 {
    font-family: var(--font-heading);
    font-size: 2.8rem;
    font-weight: 800;
    line-height: 1.25;
    max-width: 900px;
    margin: 0 auto;
}

.article-content-wrap {
    padding: 2rem 0 6rem 0;
}

.article-content {
    max-width: 800px;
    margin: 0 auto;
    font-size: 1.05rem;
    line-height: 1.85;
}

.article-content p {
    margin-bottom: 1.8rem;
    color: var(--text-main);
}

.article-content h2 {
    font-family: var(--font-heading);
    font-size: 1.8rem;
    font-weight: 700;
    margin: 3rem 0 1.2rem 0;
    color: var(--text-main);
    border-left: 4px solid var(--primary);
    padding-left: 0.8rem;
}

.article-content h3 {
    font-family: var(--font-heading);
    font-size: 1.4rem;
    font-weight: 700;
    margin: 2.2rem 0 1rem 0;
    color: var(--text-main);
}

.article-content ul, .article-content ol {
    margin-bottom: 1.8rem;
    padding-left: 1.5rem;
}

.article-content li {
    margin-bottom: 0.6rem;
    color: var(--text-main);
}

.article-content strong {
    color: var(--primary);
    font-weight: 600;
}

.article-content a {
    color: var(--primary);
    text-decoration: underline;
    text-underline-offset: 4px;
    font-weight: 600;
    transition: var(--transition);
}

.article-content a:hover {
    color: var(--secondary);
}

.article-content blockquote {
    border-left: 4px solid var(--primary);
    background: rgba(234, 88, 12, 0.05);
    padding: 1.2rem 1.8rem;
    margin: 2rem 0;
    border-radius: 0 16px 16px 0;
    font-style: italic;
    color: var(--text-muted);
}

.article-cta {
    margin: 4rem 0;
    text-align: center;
}

.article-footer {
    border-top: 1px solid var(--glass-border);
    padding-top: 2rem;
    margin-top: 4rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.back-to-home {
    color: var(--text-muted);
    text-decoration: none;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: var(--transition);
}

.back-to-home:hover {
    color: var(--text-main);
}

/* --- 用户评价 --- */
.reviews-section {
    padding: 6rem 0;
}

.reviews-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.review-card {
    padding: 2rem;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.review-rating {
    color: #fbbf24;
    display: flex;
    gap: 0.2rem;
    margin-bottom: 1.2rem;
}

.review-text {
    font-style: italic;
    font-size: 0.95rem;
    color: var(--text-main);
    margin-bottom: 1.5rem;
}

.review-author {
    display: flex;
    align-items: center;
    gap: 0.8rem;
}

.author-avatar {
    width: 2.8rem;
    height: 2.8rem;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    color: white;
    font-size: 0.9rem;
}

.author-info h4 {
    font-size: 0.95rem;
    font-weight: 600;
}

.author-info span {
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* --- FAQ 常见问题 --- */
.faq-section {
    padding: 6rem 0 8rem 0;
}

.faq-container {
    max-width: 800px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.faq-item {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    overflow: hidden;
    transition: var(--transition);
}

.faq-item:hover {
    border-color: var(--glass-hover-border);
}

.faq-question {
    width: 100%;
    padding: 1.5rem 1.8rem;
    background: none;
    border: none;
    color: var(--text-main);
    font-family: var(--font-heading);
    font-size: 1.1rem;
    font-weight: 600;
    text-align: left;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s cubic-bezier(0.16, 1, 0.3, 1), padding 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    color: var(--text-muted);
    font-size: 0.95rem;
    line-height: 1.7;
    padding: 0 1.8rem;
}

.faq-item.active .faq-answer {
    padding-bottom: 1.5rem;
}

.faq-icon {
    font-size: 1.2rem;
    font-weight: 400;
    transition: transform 0.3s ease;
    color: var(--primary);
}

.faq-item.active .faq-icon {
    transform: rotate(45deg);
}

/* --- 页脚 --- */
footer {
    border-top: 1px solid var(--glass-border);
    background: #fdf6ec; /* 温暖金橙浅色背景页脚 */
    padding: 5rem 0 3rem 0;
    font-size: 0.9rem;
    color: var(--text-muted);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr repeat(3, 1fr);
    gap: 3rem;
    margin-bottom: 4rem;
}

.footer-brand p {
    margin-top: 1rem;
    max-width: 320px;
    line-height: 1.7;
}

.footer-col h5 {
    font-family: var(--font-heading);
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--text-main);
    margin-bottom: 1.5rem;
}

.footer-col ul {
    list-style: none;
}

.footer-col ul li {
    margin-bottom: 0.8rem;
}

.footer-col ul a {
    color: var(--text-muted);
    text-decoration: none;
    transition: var(--transition);
}

.footer-col ul a:hover {
    color: var(--primary);
}

.footer-bottom {
    border-top: 1px solid rgba(69, 26, 3, 0.08);
    padding-top: 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-links {
    display: flex;
    gap: 2rem;
}

.footer-links a {
    color: var(--text-muted);
    text-decoration: none;
    transition: var(--transition);
}

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

/* --- 响应式规则 (Responsive Design) --- */
@media (max-width: 1024px) {
    .pricing-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1.5rem;
    }
    
    .articles-grid, .reviews-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1.5rem;
    }
    
    .hero h1 {
        font-size: 3.2rem;
    }
}

@media (max-width: 768px) {
    .menu-toggle {
        display: flex;
    }
    
    .nav-links {
        position: fixed;
        top: 4.5rem;
        left: -100%;
        width: 100%;
        height: calc(100vh - 4.5rem);
        background: rgba(255, 251, 245, 0.98);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        flex-direction: column;
        align-items: center;
        justify-content: center;
        gap: 2.5rem;
        transition: var(--transition);
        z-index: 99;
        border-top: 1px solid var(--glass-border);
    }
    
    .nav-links.active {
        left: 0;
    }
    
    .nav-btn {
        display: none;
    }
    
    .hero {
        padding: 5rem 0 3rem 0;
    }
    
    .hero h1 {
        font-size: 2.4rem;
    }
    
    .hero-subtitle {
        font-size: 1.05rem;
    }
    
    .hero-features {
        grid-template-columns: 1fr;
    }
    
    .pricing-grid, .articles-grid, .reviews-grid {
        grid-template-columns: 1fr;
    }
    
    .pricing-card.featured {
        transform: none;
    }
    
    .pricing-card.featured:hover {
        transform: none;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
    
    .footer-links {
        justify-content: center;
    }
}