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

:root {
    --cream: #FAF7F2;
    --warm-white: #FFFCF8;
    --soft-cream: #F5F1EB;
    --lighter-cream: #FBF8F4;
    --terracotta: #C67A5C;
    --terracotta-deep: #B05E3E;
    --terracotta-light: #D89B83;
    --terracotta-pale: #F2E0D7;
    --sage: #8AA88B;
    --sage-deep: #6B8F6C;
    --sage-pale: #E8F0E5;
    --warm-brown: #3D2C2A;
    --muted-brown: #6B5D5B;
    --soft-brown: #9B8D8B;
    --border-warm: #E8E3DD;
    --border-light: #F0EBE6;
    --golden: #C8A87C;
    --golden-light: #E8D5B8;
    --shadow-warm: rgba(61, 44, 42, 0.06);
    --shadow-medium: rgba(61, 44, 42, 0.10);
    --shadow-strong: rgba(61, 44, 42, 0.16);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 28px;
    --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

body {
    font-family: system-ui, 'PingFang SC', 'Microsoft YaHei', sans-serif;
    overflow-x: hidden;
    background: var(--cream);
    color: var(--warm-brown);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* 滚动条 */
::-webkit-scrollbar {
    width: 6px;
}
::-webkit-scrollbar-track {
    background: var(--cream);
}
::-webkit-scrollbar-thumb {
    background: var(--terracotta-light);
    border-radius: 3px;
}
::-webkit-scrollbar-thumb:hover {
    background: var(--terracotta);
}

/* 核心布局 */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}
.section {
    padding: 80px 0;
}
.section:nth-child(even) {
    background: var(--soft-cream);
    position: relative;
}
.section:nth-child(even)::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60%;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--border-warm), transparent);
    opacity: 0.5;
}

/* 导航 */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(250, 247, 242, 0.92);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border-warm);
    transition: var(--transition);
}
.site-header.scrolled {
    box-shadow: 0 2px 24px var(--shadow-warm);
}
.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 68px;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}
.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 700;
    font-size: 1.2rem;
    text-decoration: none;
    color: var(--warm-brown);
    letter-spacing: -0.01em;
    transition: var(--transition);
}
.logo:hover {
    color: var(--terracotta);
}
.logo-icon {
    width: 36px;
    height: 36px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    background: linear-gradient(135deg, var(--terracotta-pale), #FDE8DF);
    color: var(--terracotta);
    box-shadow: 0 2px 8px rgba(198, 122, 92, 0.15);
    transition: var(--transition);
}
.logo:hover .logo-icon {
    transform: rotate(-8deg) scale(1.05);
    box-shadow: 0 4px 14px rgba(198, 122, 92, 0.25);
}
.main-nav {
    display: flex;
    align-items: center;
    gap: 28px;
    list-style: none;
}
.main-nav a {
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--muted-brown);
    transition: var(--transition);
    position: relative;
    padding: 4px 0;
}
.main-nav a::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--terracotta);
    border-radius: 1px;
    transition: width 0.3s ease;
}
.main-nav a:hover {
    color: var(--terracotta);
}
.main-nav a:hover::after {
    width: 100%;
}
.nav-cta {
    padding: 9px 22px !important;
    border-radius: 25px !important;
    color: #fff !important;
    font-weight: 600 !important;
    background: linear-gradient(135deg, var(--terracotta), #D48B6A);
    box-shadow: 0 4px 14px rgba(198, 122, 92, 0.3);
    transition: var(--transition) !important;
    letter-spacing: 0.01em;
}
.nav-cta::after {
    display: none !important;
}
.nav-cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(198, 122, 92, 0.4);
    background: linear-gradient(135deg, var(--terracotta-deep), var(--terracotta));
}
.menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    color: var(--warm-brown);
    font-size: 1.4rem;
    transition: var(--transition);
}

/* 首页Hero */
.hero {
    min-height: 70vh;
    display: flex;
    align-items: center;
    padding-top: 40px;
    background: linear-gradient(180deg, var(--warm-white) 0%, var(--cream) 40%, var(--lighter-cream) 100%);
    position: relative;
    overflow: hidden;
}
.hero::before {
    content: '';
    position: absolute;
    top: -120px;
    right: -80px;
    width: 500px;
    height: 500px;
    border-radius: 50%;
    background: radial-gradient(circle, var(--terracotta-pale) 0%, transparent 70%);
    opacity: 0.5;
    pointer-events: none;
}
.hero::after {
    content: '';
    position: absolute;
    bottom: -60px;
    left: -100px;
    width: 350px;
    height: 350px;
    border-radius: 50%;
    background: radial-gradient(circle, var(--sage-pale) 0%, transparent 70%);
    opacity: 0.4;
    pointer-events: none;
}
.hero-content {
    max-width: 720px;
    position: relative;
    z-index: 2;
}
.hero-eyebrow {
    display: inline-block;
    font-size: 0.85rem;
    font-weight: 600;
    padding: 5px 16px;
    border-radius: 20px;
    margin-bottom: 16px;
    background: var(--sage-pale);
    color: var(--sage-deep);
    letter-spacing: 0.03em;
    border: 1px solid rgba(138, 168, 139, 0.2);
}
.hero h1 {
    font-size: 3rem;
    line-height: 1.15;
    margin-bottom: 20px;
    font-weight: 800;
    letter-spacing: -0.02em;
    color: var(--warm-brown);
}
.hero h1 .highlight {
    color: var(--terracotta);
    position: relative;
    display: inline-block;
}
.hero h1 .highlight::after {
    content: '';
    position: absolute;
    bottom: 2px;
    left: 0;
    width: 100%;
    height: 8px;
    background: var(--terracotta-pale);
    border-radius: 4px;
    z-index: -1;
    opacity: 0.7;
}
.hero p {
    font-size: 1.1rem;
    opacity: 0.7;
    max-width: 560px;
    margin-bottom: 32px;
    color: var(--muted-brown);
    line-height: 1.7;
}
.hero-buttons {
    display: flex;
    gap: 14px;
    flex-wrap: wrap;
}
.hero-image {
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: 0 20px 60px var(--shadow-medium);
    border: 1px solid var(--border-warm);
    position: relative;
    z-index: 2;
}
.hero-image img {
    width: 100%;
    height: auto;
    display: block;
}

/* 按钮 */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 28px;
    border-radius: 25px;
    font-weight: 600;
    cursor: pointer;
    border: none;
    text-decoration: none;
    transition: var(--transition);
    font-size: 0.95rem;
    letter-spacing: 0.01em;
    position: relative;
    overflow: hidden;
}
.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    transition: width 0.5s ease, height 0.5s ease, top 0.5s ease, left 0.5s ease;
    transform: translate(-50%, -50%);
}
.btn:active::before {
    width: 300px;
    height: 300px;
}
.btn-primary {
    color: #fff;
    background: linear-gradient(135deg, var(--terracotta), #D48B6A);
    box-shadow: 0 4px 16px rgba(198, 122, 92, 0.3);
}
.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(198, 122, 92, 0.4);
}
.btn-outline {
    background: transparent;
    border: 1.5px solid var(--terracotta);
    color: var(--terracotta);
}
.btn-outline:hover {
    background: var(--terracotta-pale);
    border-color: var(--terracotta-deep);
    color: var(--terracotta-deep);
    transform: translateY(-2px);
}

/* 标签/标题 */
.section-label {
    display: inline-block;
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 2px;
    margin-bottom: 12px;
    color: var(--sage-deep);
    text-transform: uppercase;
    position: relative;
    padding-left: 28px;
}
.section-label::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 18px;
    height: 2px;
    background: var(--sage);
    border-radius: 1px;
}
.section-title {
    font-size: 2.2rem;
    margin-bottom: 14px;
    font-weight: 700;
    letter-spacing: -0.01em;
    color: var(--warm-brown);
    line-height: 1.25;
}
.section-desc {
    max-width: 600px;
    opacity: 0.7;
    margin-bottom: 40px;
    color: var(--muted-brown);
    font-size: 1.05rem;
    line-height: 1.7;
}

/* 卡片网格 */
.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 24px;
}
.category-card {
    border-radius: var(--radius-lg);
    padding: 28px;
    border: 1px solid var(--border-warm);
    transition: var(--transition);
    background: #fff;
    position: relative;
    overflow: hidden;
}
.category-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--terracotta), var(--terracotta-light), transparent);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.4s ease;
}
.category-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 32px var(--shadow-medium);
    border-color: transparent;
}
.category-card:hover::before {
    transform: scaleX(1);
}
.card-icon {
    width: 48px;
    height: 48px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 16px;
    font-size: 1.3rem;
    background: var(--terracotta-pale);
    color: var(--terracotta);
    transition: var(--transition);
}
.category-card:hover .card-icon {
    background: var(--terracotta);
    color: #fff;
    transform: scale(1.08);
}
.card-link {
    font-weight: 600;
    font-size: 0.85rem;
    text-decoration: none;
    color: var(--terracotta);
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: var(--transition);
}
.card-link::after {
    content: '→';
    transition: transform 0.3s ease;
}
.card-link:hover {
    color: var(--terracotta-deep);
}
.card-link:hover::after {
    transform: translateX(4px);
}

/* 特性块 */
.feature-block {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 56px;
    align-items: center;
}
.feature-image {
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: 0 16px 48px var(--shadow-medium);
    border: 1px solid var(--border-warm);
    position: relative;
}
.feature-image::after {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: var(--radius-lg);
    background: linear-gradient(135deg, rgba(198, 122, 92, 0.06), transparent 60%);
    pointer-events: none;
}
.feature-image img {
    width: 100%;
    height: auto;
    display: block;
}
.feature-text {
    color: var(--warm-brown);
}
.feature-text h3 {
    font-size: 1.6rem;
    font-weight: 700;
    margin-bottom: 12px;
    letter-spacing: -0.01em;
}
.feature-list {
    list-style: none;
    margin-top: 8px;
}
.feature-list li {
    padding: 7px 0;
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--muted-brown);
    font-size: 0.95rem;
}
.feature-list li::before {
    content: '✓';
    font-weight: 700;
    color: var(--sage-deep);
    font-size: 0.85rem;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--sage-pale);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

/* 数据条 */
.stats-bar {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    text-align: center;
}
.stat-item {
    padding: 28px 20px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-warm);
    background: #fff;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}
.stat-item::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 40px;
    height: 3px;
    border-radius: 2px;
    background: var(--terracotta-light);
    opacity: 0;
    transition: var(--transition);
}
.stat-item:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 24px var(--shadow-medium);
    border-color: transparent;
}
.stat-item:hover::after {
    opacity: 1;
    width: 60px;
}
.stat-number {
    font-size: 2.4rem;
    font-weight: 800;
    color: var(--terracotta);
    letter-spacing: -0.02em;
    line-height: 1;
}
.stat-label {
    font-size: 0.9rem;
    opacity: 0.6;
    margin-top: 6px;
    color: var(--muted-brown);
    font-weight: 500;
}

/* 内容墙 */
.content-wall {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 24px;
}
.content-wall-item {
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--border-warm);
    transition: var(--transition);
    background: #fff;
}
.content-wall-item:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 32px var(--shadow-medium);
    border-color: transparent;
}
.content-wall-item img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    display: block;
    transition: transform 0.5s ease;
}
.content-wall-item:hover img {
    transform: scale(1.04);
}
.content-wall-body {
    padding: 20px;
}
.content-wall-body h4 {
    font-size: 1.05rem;
    font-weight: 600;
    margin-bottom: 6px;
    color: var(--warm-brown);
}
.content-wall-body p {
    font-size: 0.9rem;
    color: var(--muted-brown);
    opacity: 0.8;
    line-height: 1.5;
}

/* FAQ */
.faq-list {
    max-width: 800px;
    margin: 0 auto;
}
.faq-item {
    border: 1px solid var(--border-warm);
    border-radius: var(--radius-md);
    margin-bottom: 8px;
    overflow: hidden;
    cursor: pointer;
    background: #fff;
    transition: var(--transition);
}
.faq-item:hover {
    border-color: var(--terracotta-light);
    box-shadow: 0 2px 12px var(--shadow-warm);
}
.faq-item .faq-question {
    padding: 16px 20px;
    font-weight: 600;
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--warm-brown);
    font-size: 0.95rem;
    transition: var(--transition);
}
.faq-item .faq-question::after {
    content: '+';
    font-size: 1.2rem;
    font-weight: 300;
    color: var(--terracotta);
    transition: transform 0.3s ease;
    flex-shrink: 0;
    margin-left: 12px;
}
.faq-item.open .faq-question {
    color: var(--terracotta);
}
.faq-item.open .faq-question::after {
    content: '−';
    transform: rotate(180deg);
}
.faq-item .faq-answer {
    padding: 0 20px 16px;
    display: none;
    opacity: 0.7;
    color: var(--muted-brown);
    font-size: 0.9rem;
    line-height: 1.6;
}
.faq-item.open .faq-answer {
    display: block;
}

/* CTA横幅 */
.cta-banner {
    padding: 56px 24px;
    text-align: center;
    border-radius: var(--radius-xl);
    color: #fff;
    background: linear-gradient(135deg, var(--terracotta), #D48B6A, #C67A5C);
    position: relative;
    overflow: hidden;
}
.cta-banner::before {
    content: '';
    position: absolute;
    top: -40px;
    right: -40px;
    width: 200px;
    height: 200px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.08);
    pointer-events: none;
}
.cta-banner::after {
    content: '';
    position: absolute;
    bottom: -30px;
    left: -30px;
    width: 150px;
    height: 150px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.06);
    pointer-events: none;
}
.cta-banner h2 {
    color: #fff;
    font-size: 2rem;
    font-weight: 700;
    letter-spacing: -0.01em;
    margin-bottom: 8px;
    position: relative;
    z-index: 1;
}
.cta-banner p {
    position: relative;
    z-index: 1;
    opacity: 0.9;
    margin-bottom: 20px;
}
.cta-banner .btn-primary {
    background: #fff;
    color: var(--terracotta);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.12);
    position: relative;
    z-index: 1;
    font-weight: 700;
}
.cta-banner .btn-primary:hover {
    background: var(--warm-white);
    box-shadow: 0 8px 28px rgba(0, 0, 0, 0.18);
    transform: translateY(-2px);
    color: var(--terracotta-deep);
}

/* 页脚 */
.site-footer {
    padding: 56px 0 28px;
    background: #F0ECE6;
    border-top: 1px solid var(--border-warm);
    color: var(--warm-brown);
}
.site-footer .container {
    position: relative;
}
.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
}
.footer-brand {
    color: var(--muted-brown);
}
.footer-brand .logo {
    margin-bottom: 12px;
    font-size: 1.1rem;
}
.footer-brand p {
    font-size: 0.9rem;
    opacity: 0.7;
    line-height: 1.6;
}
.footer-col h4 {
    font-size: 0.9rem;
    font-weight: 700;
    margin-bottom: 14px;
    color: var(--warm-brown);
    letter-spacing: 0.02em;
}
.footer-col ul {
    list-style: none;
}
.footer-col ul li {
    margin-bottom: 8px;
}
.footer-col ul li a {
    text-decoration: none;
    color: var(--muted-brown);
    font-size: 0.9rem;
    transition: var(--transition);
}
.footer-col ul li a:hover {
    color: var(--terracotta);
    padding-left: 4px;
}
.footer-bottom {
    border-top: 1px solid var(--border-warm);
    margin-top: 40px;
    padding-top: 20px;
    text-align: center;
    font-size: 0.85rem;
    color: var(--soft-brown);
    opacity: 0.8;
}

/* 工具类 */
.text-accent {
    color: var(--terracotta);
    font-weight: 600;
}
.text-center {
    text-align: center;
}
.seo-description {
    max-width: 600px;
    margin: 0 auto 48px;
    opacity: 0.7;
    color: var(--muted-brown);
    font-size: 0.95rem;
    line-height: 1.7;
}
.mt-0 {
    margin-top: 0;
}
.mb-0 {
    margin-bottom: 0;
}

/* 动画工具类 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(24px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}
.animate-in {
    animation: fadeInUp 0.6s ease forwards;
}

/* 响应式 */
@media (max-width: 1024px) {
    .hero h1 {
        font-size: 2.4rem;
    }
    .section-title {
        font-size: 1.8rem;
    }
    .feature-block {
        gap: 32px;
    }
    .stats-bar {
        grid-template-columns: repeat(2, 1fr);
    }
    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 28px;
    }
}

@media (max-width: 768px) {
    .feature-block {
        grid-template-columns: 1fr;
        gap: 32px;
    }
    .feature-image {
        order: -1;
    }
    .stats-bar {
        grid-template-columns: repeat(2, 1fr);
        gap: 14px;
    }
    .stat-number {
        font-size: 1.8rem;
    }
    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 24px;
    }
    .hero {
        min-height: 60vh;
        padding-top: 80px;
        text-align: center;
    }
    .hero-content {
        max-width: 100%;
    }
    .hero p {
        max-width: 100%;
        margin-left: auto;
        margin-right: auto;
    }
    .hero-buttons {
        justify-content: center;
    }
    .hero h1 {
        font-size: 2rem;
    }
    .section {
        padding: 56px 0;
    }
    .section-title {
        font-size: 1.6rem;
    }
    .main-nav {
        display: none;
    }
    .menu-toggle {
        display: flex;
    }
    .main-nav.open {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 68px;
        left: 0;
        width: 100%;
        background: rgba(250, 247, 242, 0.98);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        padding: 20px 24px;
        border-bottom: 1px solid var(--border-warm);
        box-shadow: 0 12px 32px var(--shadow-medium);
        gap: 6px;
    }
    .main-nav.open a {
        padding: 12px 16px;
        border-radius: var(--radius-sm);
        font-size: 1rem;
    }
    .main-nav.open a:hover {
        background: var(--terracotta-pale);
    }
    .main-nav.open .nav-cta {
        text-align: center;
        margin-top: 6px;
        border-radius: 25px !important;
    }
    .cards-grid {
        grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
        gap: 16px;
    }
    .content-wall {
        grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
        gap: 16px;
    }
}

@media (max-width: 480px) {
    .cards-grid,
    .content-wall,
    .stats-bar {
        grid-template-columns: 1fr;
    }
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    .hero-buttons .btn {
        width: 100%;
        justify-content: center;
    }
    .hero h1 {
        font-size: 1.7rem;
    }
    .hero p {
        font-size: 1rem;
    }
    .section-title {
        font-size: 1.4rem;
    }
    .section {
        padding: 40px 0;
    }
    .container {
        padding: 0 16px;
    }
    .header-inner {
        padding: 0 16px;
    }
    .stat-item {
        padding: 20px 16px;
    }
    .stat-number {
        font-size: 1.6rem;
    }
    .cta-banner {
        padding: 36px 16px;
        border-radius: var(--radius-lg);
    }
    .cta-banner h2 {
        font-size: 1.4rem;
    }
    .feature-block {
        gap: 20px;
    }
    .feature-text h3 {
        font-size: 1.3rem;
    }
    .category-card {
        padding: 20px;
    }
}