@import url('https://fonts.googleapis.com/css2?family=Noto+Serif+SC:wght@700;900&display=swap');

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

body {
    font-family: system-ui, -apple-system, 'PingFang SC', 'Microsoft YaHei', sans-serif;
    overflow-x: hidden;
    background: #FFF8F5;
    color: #2D3436;
    line-height: 1.6;
    letter-spacing: 0.02em;
}

::selection {
    background: #FF4D6D;
    color: #fff;
}

/* ===== 核心布局 ===== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    position: relative;
}

.section {
    padding: 100px 0;
    position: relative;
}

.section:nth-child(even) {
    background: linear-gradient(180deg, #FFF5F1 0%, #F0F9FB 100%);
}

/* ===== 导航 — 固定顶部 ===== */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(255, 248, 245, 0.92);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid rgba(255, 77, 109, 0.12);
    box-shadow: 0 2px 24px rgba(255, 77, 109, 0.06);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 900;
    font-size: 1.25rem;
    text-decoration: none;
    color: #2D3436;
    letter-spacing: -0.02em;
}

.logo-icon {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: linear-gradient(135deg, #FF4D6D, #FFB703);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    box-shadow: 0 4px 16px rgba(255, 77, 109, 0.35);
    color: #fff;
    font-weight: 900;
    transform: rotate(-8deg);
    transition: transform 0.3s ease;
}

.logo:hover .logo-icon {
    transform: rotate(8deg) scale(1.08);
}

.main-nav {
    display: flex;
    align-items: center;
    gap: 30px;
    list-style: none;
}

.main-nav a {
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 600;
    color: #2D3436;
    position: relative;
    padding: 4px 0;
    transition: color 0.3s ease;
}

.main-nav a::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 3px;
    border-radius: 3px;
    background: linear-gradient(90deg, #FF4D6D, #FFB703);
    transition: width 0.35s cubic-bezier(0.65, 0.05, 0.36, 1);
}

.main-nav a:hover {
    color: #FF4D6D;
}

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

.nav-cta {
    padding: 10px 24px;
    border-radius: 40px;
    color: #fff !important;
    font-weight: 700;
    background: linear-gradient(135deg, #FF4D6D, #FF7A59);
    box-shadow: 0 4px 16px rgba(255, 77, 109, 0.3);
    transition: all 0.3s ease !important;
}

.nav-cta::after {
    display: none;
}

.nav-cta:hover {
    transform: translateY(-2px) scale(1.04);
    box-shadow: 0 8px 24px rgba(255, 77, 109, 0.4);
}

.menu-toggle {
    display: none;
    width: 44px;
    height: 44px;
    background: #fff;
    border: 2px solid #FF4D6D;
    border-radius: 12px;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 1.4rem;
    color: #FF4D6D;
}

/* ===== 首页Hero ===== */
.hero {
    min-height: 90vh;
    display: flex;
    align-items: center;
    background:
        radial-gradient(circle at 85% 30%, rgba(255, 183, 3, 0.12) 0%, transparent 45%),
        radial-gradient(circle at 70% 80%, rgba(255, 77, 109, 0.1) 0%, transparent 50%),
        linear-gradient(135deg, #FFF8F5 0%, #FFF0EB 50%, #EAF8FB 100%);
    padding: 120px 0 80px;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 18%;
    right: -120px;
    width: 420px;
    height: 420px;
    border-radius: 50%;
    border: 90px solid rgba(255, 77, 109, 0.28);
    animation: rotateIn 30s linear infinite;
}

@keyframes rotateIn {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.hero::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 50px;
    background: radial-gradient(circle at 20% 100%, transparent 0%, transparent 20%, rgba(255,255,255,0.4) 20%, rgba(255,255,255,0.4) 21%, transparent 21%, transparent 40%, rgba(255,255,255,0.4) 40%, rgba(255,255,255,0.4) 41%, transparent 41%);
    background-size: 80px 50px;
}

.hero-content {
    max-width: 720px;
    position: relative;
    z-index: 2;
}

.hero-eyebrow {
    display: inline-block;
    font-size: 0.82rem;
    font-weight: 800;
    letter-spacing: 0.2em;
    padding: 8px 20px;
    border-radius: 40px;
    margin-bottom: 24px;
    background: linear-gradient(135deg, #FF4D6D, #FFB703);
    color: #fff;
    box-shadow: 0 4px 16px rgba(255, 77, 109, 0.25);
    text-transform: uppercase;
}

.hero h1 {
    font-size: clamp(2.6rem, 5vw, 4.2rem);
    line-height: 1.1;
    margin-bottom: 24px;
    font-weight: 900;
    letter-spacing: -0.03em;
    color: #2D3436;
}

.hero h1 span {
    display: inline-block;
    background: linear-gradient(120deg, #FF4D6D, #FF7A59, #FFB703);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    font-style: italic;
}

.hero p {
    font-size: 1.15rem;
    opacity: 0.65;
    max-width: 560px;
    margin-bottom: 36px;
    line-height: 1.8;
    font-weight: 400;
}

.hero-buttons {
    display: flex;
    gap: 16px;
}

.hero-image {
    border-radius: 24px;
    overflow: hidden;
    position: relative;
}

.hero-image img {
    width: 100%;
    height: auto;
}

/* ===== 按钮 ===== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 32px;
    border-radius: 40px;
    font-weight: 700;
    cursor: pointer;
    border: none;
    text-decoration: none;
    transition: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
    font-size: 0.95rem;
    letter-spacing: 0.02em;
}

.btn-primary {
    background: linear-gradient(135deg, #FF4D6D, #FF7A59);
    color: #fff;
    box-shadow: 0 8px 24px rgba(255, 77, 109, 0.3);
}

.btn-primary:hover {
    transform: translateY(-3px) scale(1.02);
    box-shadow: 0 12px 32px rgba(255, 77, 109, 0.4);
}

.btn-outline {
    background: transparent;
    border: 2px solid #00B4D8;
    color: #00B4D8;
}

.btn-outline:hover {
    background: #00B4D8;
    color: #fff;
    transform: translateY(-3px);
    box-shadow: 0 8px 24px rgba(0, 180, 216, 0.3);
}

/* ===== 标签/标题 ===== */
.section-label {
    display: inline-block;
    font-size: 0.8rem;
    font-weight: 800;
    letter-spacing: 0.18em;
    margin-bottom: 14px;
    text-transform: uppercase;
    color: #FF4D6D;
    background: linear-gradient(90deg, rgba(255,77,109,0.1), rgba(255,183,3,0.1));
    padding: 6px 16px;
    border-radius: 30px;
}

.section-title {
    font-size: clamp(1.8rem, 3vw, 2.6rem);
    margin-bottom: 16px;
    font-weight: 900;
    line-height: 1.2;
    letter-spacing: -0.02em;
    color: #2D3436;
}

.section-desc {
    max-width: 600px;
    opacity: 0.65;
    margin-bottom: 48px;
    font-size: 1rem;
    line-height: 1.8;
}

/* ===== 卡片网格 ===== */
.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 28px;
}

.category-card {
    border-radius: 20px;
    padding: 32px 28px;
    border: 1px solid rgba(255, 77, 109, 0.12);
    background: #fff;
    transition: all 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);
    position: relative;
    overflow: hidden;
}

.category-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, #FF4D6D, #FFB703);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.category-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 12px 32px rgba(255, 77, 109, 0.12);
    border-color: rgba(255, 77, 109, 0.3);
}

.category-card:hover::before {
    opacity: 1;
}

.card-icon {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 18px;
    font-size: 1.5rem;
    background: linear-gradient(135deg, #FFF0EB, #EAF8FB);
    position: relative;
}

.category-card:nth-child(1) .card-icon {
    background: linear-gradient(135deg, #FFE3E6, #FFD0D6);
}

.category-card:nth-child(2) .card-icon {
    background: linear-gradient(135deg, #E0F4F8, #CCEDF2);
}

.category-card:nth-child(3) .card-icon {
    background: linear-gradient(135deg, #FFF3D6, #FFE8B3);
}

.category-card:nth-child(4) .card-icon {
    background: linear-gradient(135deg, #E6FBF3, #D0F5E8);
}

.card-link {
    font-weight: 700;
    font-size: 0.9rem;
    text-decoration: none;
    color: #FF4D6D;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: gap 0.3s ease;
}

.card-link:hover {
    gap: 12px;
}

/* ===== 特性块 ===== */
.feature-block {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: center;
}

.feature-image {
    border-radius: 24px;
    overflow: hidden;
    position: relative;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.08);
}

.feature-image::before {
    content: '';
    position: absolute;
    top: -20px;
    right: -20px;
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: rgba(255, 183, 3, 0.4);
    z-index: 1;
}

.feature-image img {
    width: 100%;
    height: auto;
}

.feature-text {
    position: relative;
}

.feature-list {
    list-style: none;
    margin-top: 20px;
}

.feature-list li {
    padding: 10px 0;
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 500;
}

.feature-list li::before {
    content: '✓';
    font-weight: 900;
    background: linear-gradient(135deg, #00B4D8, #00C2A8);
    width: 24px;
    height: 24px;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    color: #fff;
    flex-shrink: 0;
}

/* ===== 数据条 ===== */
.stats-bar {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 28px;
    text-align: center;
}

.stat-item {
    padding: 36px 24px;
    border-radius: 20px;
    background: #fff;
    border: none;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.05);
    position: relative;
    transition: transform 0.3s ease;

}

.stat-item:nth-child(1) { border-top: 4px solid #FF4D6D; }
.stat-item:nth-child(2) { border-top: 4px solid #00B4D8; }
.stat-item:nth-child(3) { border-top: 4px solid #FFB703; }
.stat-item:nth-child(4) { border-top: 4px solid #00C2A8; }

.stat-item:hover {
    transform: translateY(-4px);
}

.stat-number {
    font-size: 2.6rem;
    font-weight: 900;
    color: #2D3436;
    line-height: 1.2;
}

.stat-item:nth-child(1) .stat-number { color: #FF4D6D; }
.stat-item:nth-child(2) .stat-number { color: #00B4D8; }
.stat-item:nth-child(3) .stat-number { color: #FF9F1C; }
.stat-item:nth-child(4) .stat-number { color: #00C2A8; }

.stat-label {
    font-size: 0.85rem;
    opacity: 0.6;
    margin-top: 8px;
    font-weight: 500;
    letter-spacing: 0.05em;
}

/* ===== 内容墙 ===== */
.content-wall {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 28px;
}

.content-wall-item {
    border-radius: 20px;
    overflow: hidden;
    border: 1px solid rgba(0, 0, 0, 0.06);
    background: #fff;
    transition: all 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.content-wall-item:hover {
    transform: translateY(-6px);
    box-shadow: 0 16px 40px rgba(0, 0, 0, 0.08);
}

.content-wall-item img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.content-wall-item:hover img {
    transform: scale(1.05);
}

.content-wall-body {
    padding: 22px 20px;
}

.content-wall-body h3 {
    font-size: 1.05rem;
    font-weight: 800;
    margin-bottom: 8px;
    color: #2D3436;
}

.content-wall-body p {
    font-size: 0.85rem;
    opacity: 0.6;
    line-height: 1.6;
}

/* ===== FAQ ===== */
.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    border: 1px solid rgba(0, 0, 0, 0.06);
    border-radius: 16px;
    margin-bottom: 10px;
    overflow: hidden;
    cursor: pointer;
    background: #fff;
    transition: box-shadow 0.3s ease;
}

.faq-item:hover {
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.05);
}

.faq-item .faq-question {
    padding: 18px 24px;
    font-weight: 700;
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: #2D3436;
    font-size: 0.95rem;
}

.faq-item .faq-question::after {
    content: '+';
    font-size: 1.5rem;
    color: #FF4D6D;
    transition: transform 0.3s ease;
    font-weight: 400;
}

.faq-item.open .faq-question::after {
    content: '−';
    transform: rotate(180deg);
    color: #00B4D8;
}

.faq-item .faq-answer {
    padding: 0 24px 20px;
    display: none;
    opacity: 0.65;
    line-height: 1.7;
    font-size: 0.9rem;
}

.faq-item.open .faq-answer {
    display: block;
}

/* ===== CTA横幅 ===== */
.cta-banner {
    padding: 64px 48px;
    text-align: center;
    border-radius: 28px;
    background: linear-gradient(135deg, #FF4D6D, #FF7A59, #FFB703);
    color: #fff;
    position: relative;
    overflow: hidden;
    box-shadow: 0 20px 48px rgba(255, 77, 109, 0.3);
}

.cta-banner::before {
    content: '';
    position: absolute;
    width: 200px;
    height: 200px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.15);
    top: -60px;
    right: -40px;
}

.cta-banner::after {
    content: '';
    position: absolute;
    width: 120px;
    height: 120px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    bottom: -30px;
    left: 10%;
}

.cta-banner h2 {
    color: #fff;
    font-size: 2rem;
    font-weight: 900;
    margin-bottom: 12px;
    position: relative;
    z-index: 2;
}

.cta-banner .btn-primary {
    background: #fff;
    color: #FF4D6D;
    box-shadow: 0 8px 24px rgba(255, 255, 255, 0.25);
    position: relative;
    z-index: 2;
}

.cta-banner .btn-primary:hover {
    box-shadow: 0 12px 32px rgba(255, 255, 255, 0.4);
    transform: translateY(-3px);
}

/* ===== 页脚 ===== */
.site-footer {
    padding: 64px 0 32px;
    background: linear-gradient(180deg, #FFF8F5 0%, #FFF0EB 30%);
    border-top: 1px solid rgba(255, 77, 109, 0.1);
}

.site-footer .container {
    max-width: 1200px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 48px;
}

.footer-brand {
    font-weight: 800;
    font-size: 1.2rem;
    margin-bottom: 12px;
    color: #2D3436;
}

.footer-col h4 {
    font-weight: 800;
    font-size: 0.9rem;
    margin-bottom: 16px;
    color: #2D3436;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.footer-col a {
    display: block;
    text-decoration: none;
    color: #2D3436;
    opacity: 0.6;
    font-size: 0.85rem;
    padding: 5px 0;
    transition: opacity 0.3s ease, color 0.3s ease;
}

.footer-col a:hover {
    opacity: 1;
    color: #FF4D6D;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 77, 109, 0.12);
    margin-top: 48px;
    padding-top: 24px;
    text-align: center;
    font-size: 0.8rem;
    opacity: 0.5;
    color: #2D3436;
}

/* ===== 工具类 ===== */
.text-accent {
    color: #FF4D6D;
    background: linear-gradient(120deg, #FF4D6D, #FFB703);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.text-center {
    text-align: center;
}

.seo-description {
    max-width: 600px;
    margin: 0 auto 48px;
    opacity: 0.65;
    line-height: 1.8;
}

.mt-0 { margin-top: 0; }
.mb-0 { margin-bottom: 0; }

/* ===== 额外装饰性元素 ===== */
.section-decorator {
    position: absolute;
    width: 100px;
    height: 100px;
    border-radius: 30px;
    background: linear-gradient(135deg, rgba(255, 77, 109, 0.15), rgba(255, 183, 3, 0.15));
    transform: rotate(30deg);
    top: 60px;
    right: 5%;
    pointer-events: none;
    animation: float 6s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: rotate(30deg) translateY(0); }
    50% { transform: rotate(30deg) translateY(-20px); }
}

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
    .hero {
        padding: 100px 0 60px;
    }
    
    .feature-block {
        gap: 40px;
    }
    
    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 32px;
    }
}

@media (max-width: 768px) {
    .container {
        padding: 0 20px;
    }
    
    .hero {
        padding: 100px 0 80px;
    }
    
    .hero h1 {
        font-size: 2.2rem;
    }
    
    .feature-block {
        grid-template-columns: 1fr;
        gap: 32px;
    }
    
    .stats-bar {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
    }
    
    .stat-item {
        padding: 24px 16px;
    }
    
    .stat-number {
        font-size: 2rem;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 28px;
        text-align: center;
    }
    
    .main-nav {
        display: none;
        flex-direction: column;
        position: absolute;
        top: 72px;
        left: 0;
        width: 100%;
        background: rgba(255, 248, 245, 0.98);
        padding: 24px;
        gap: 20px;
        border-bottom: 1px solid rgba(255, 77, 109, 0.12);
        box-shadow: 0 16px 32px rgba(0, 0, 0, 0.08);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
    }
    
    .main-nav.open {
        display: flex;
    }
    
    .menu-toggle {
        display: flex;
        font-size: 1.6rem;
        background: transparent;
        border: none;
        color: #FF4D6D;
        width: 36px;
        height: 36px;
    }
    
    .menu-toggle:hover {
        background: rgba(255, 77, 109, 0.1);
        border-radius: 8px;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: stretch;
    }
    
    .hero-buttons .btn {
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .section {
        padding: 60px 0;
    }
    
    .logo {
        font-size: 1rem;
    }
    
    .logo-icon {
        width: 32px;
        height: 32px;
        font-size: 1rem;
    }
    
    .hero h1 {
        font-size: 1.8rem;
    }
    
    .hero p {
        font-size: 0.95rem;
    }
    
    .cards-grid,
    .content-wall,
    .stats-bar {
        grid-template-columns: 1fr;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
    }
    
    .cta-banner {
        padding: 40px 24px;
    }
    
    .cta-banner h2 {
        font-size: 1.4rem;
    }
    
    .section-title {
        font-size: 1.6rem;
    }
    
    .btn {
        padding: 12px 24px;
        font-size: 0.85rem;
    }
    
    .stats-bar {
        gap: 12px;
    }
    
    .stat-item {
        padding: 20px 12px;
    }
    
    .stat-number {
        font-size: 1.6rem;
    }
}