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

:root {
    --cream: #faf7f2;
    --warm-white: #fefcf8;
    --terracotta: #c8784a;
    --terracotta-light: #e8c4a8;
    --terracotta-deep: #a85d32;
    --sage: #9aab9b;
    --sage-light: #d4dfd5;
    --sage-deep: #6b7d6c;
    --warm-brown: #3d2e28;
    --warm-brown-soft: #6b5a52;
    --border-warm: #e8e0d5;
    --border-light: #f0ebe2;
    --shadow-warm: rgba(61, 46, 40, 0.06);
    --shadow-card: rgba(61, 46, 40, 0.08);
    --radius-sm: 10px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --radius-xl: 32px;
}

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

/* ============ 核心布局 ============ */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 28px;
}

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

.section:nth-child(even) {
    background: #f7f3ed;
}

.section:nth-child(odd) {
    background: var(--cream);
}

/* ============ 导航 ============ */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(250, 247, 242, 0.88);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    border-bottom: 1px solid var(--border-light);
    transition: all 0.3s ease;
}

.site-header.scrolled {
    box-shadow: 0 2px 24px var(--shadow-warm);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 28px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 700;
    font-size: 1.25rem;
    text-decoration: none;
    color: var(--warm-brown);
    letter-spacing: -0.01em;
    transition: opacity 0.2s;
}

.logo:hover {
    opacity: 0.75;
}

.logo-icon {
    width: 40px;
    height: 40px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--terracotta) 0%, var(--terracotta-deep) 100%);
    color: #fff;
    letter-spacing: -0.02em;
}

.main-nav {
    display: flex;
    align-items: center;
    gap: 32px;
    list-style: none;
}

.main-nav a {
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--warm-brown-soft);
    transition: color 0.25s;
    position: relative;
    letter-spacing: 0.01em;
}

.main-nav a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--terracotta);
    border-radius: 1px;
    transition: width 0.3s cubic-bezier(0.25, 0.8, 0.25, 1.2);
}

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

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

.nav-cta {
    padding: 10px 24px !important;
    border-radius: 28px !important;
    color: #fff !important;
    font-weight: 600 !important;
    background: linear-gradient(135deg, var(--terracotta) 0%, var(--terracotta-deep) 100%) !important;
    box-shadow: 0 4px 16px rgba(200, 120, 74, 0.3);
    transition: all 0.3s !important;
    letter-spacing: 0.01em !important;
}

.nav-cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(200, 120, 74, 0.4) !important;
    color: #fff !important;
}

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

.menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    color: var(--warm-brown);
    font-size: 1.5rem;
    line-height: 1;
}

/* ============ Hero ============ */
.hero {
    min-height: 75vh;
    display: flex;
    align-items: center;
    background: linear-gradient(175deg, #faf7f2 0%, #f3ede5 40%, #f7f3ed 100%);
    padding-top: 80px;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -120px;
    right: -80px;
    width: 500px;
    height: 500px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(212, 223, 213, 0.35) 0%, transparent 70%);
    pointer-events: none;
}

.hero::after {
    content: '';
    position: absolute;
    bottom: -60px;
    left: -40px;
    width: 350px;
    height: 350px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(232, 196, 168, 0.3) 0%, transparent 70%);
    pointer-events: none;
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 56px;
    align-items: center;
    position: relative;
    z-index: 1;
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 28px;
}

.hero-content {
    max-width: 640px;
}

.hero-eyebrow {
    display: inline-block;
    font-size: 0.8rem;
    font-weight: 600;
    padding: 6px 18px;
    border-radius: 24px;
    margin-bottom: 20px;
    background: var(--sage-light);
    color: var(--sage-deep);
    letter-spacing: 0.06em;
    text-transform: uppercase;
}

.hero h1 {
    font-size: 3.4rem;
    line-height: 1.15;
    margin-bottom: 22px;
    font-weight: 800;
    letter-spacing: -0.025em;
    color: var(--warm-brown);
}

.hero h1 .highlight {
    background: linear-gradient(135deg, var(--terracotta) 0%, #d4895a 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero p {
    font-size: 1.15rem;
    opacity: 0.75;
    max-width: 520px;
    margin-bottom: 36px;
    line-height: 1.7;
    color: var(--warm-brown-soft);
}

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

.hero-image {
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: 0 24px 64px var(--shadow-card);
    position: relative;
}

.hero-image::after {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: var(--radius-xl);
    border: 1px solid rgba(255, 255, 255, 0.5);
    pointer-events: none;
}

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

/* ============ 按钮 ============ */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 32px;
    border-radius: 30px;
    font-weight: 600;
    cursor: pointer;
    border: none;
    text-decoration: none;
    transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1.2);
    font-size: 0.95rem;
    letter-spacing: 0.01em;
}

.btn-primary {
    color: #fff;
    background: linear-gradient(135deg, var(--terracotta) 0%, #d08050 100%);
    box-shadow: 0 6px 20px rgba(200, 120, 74, 0.35);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 32px rgba(200, 120, 74, 0.45);
    background: linear-gradient(135deg, #d08050 0%, var(--terracotta-deep) 100%);
}

.btn-outline {
    background: transparent;
    border: 2px solid var(--border-warm);
    color: var(--warm-brown);
}

.btn-outline:hover {
    border-color: var(--terracotta);
    color: var(--terracotta);
    background: rgba(200, 120, 74, 0.04);
    transform: translateY(-3px);
}

/* ============ 标签/标题 ============ */
.section-label {
    display: inline-block;
    font-size: 0.78rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    margin-bottom: 14px;
    text-transform: uppercase;
    color: var(--terracotta);
}

.section-title {
    font-size: 2.4rem;
    margin-bottom: 16px;
    font-weight: 800;
    letter-spacing: -0.02em;
    color: var(--warm-brown);
    line-height: 1.25;
}

.section-desc {
    max-width: 600px;
    opacity: 0.7;
    margin-bottom: 48px;
    font-size: 1.05rem;
    line-height: 1.7;
    color: var(--warm-brown-soft);
}

/* ============ 卡片网格 ============ */
.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 28px;
}

.category-card {
    border-radius: var(--radius-lg);
    padding: 36px 28px;
    border: 1px solid var(--border-light);
    background: var(--warm-white);
    transition: all 0.35s cubic-bezier(0.25, 0.8, 0.25, 1.2);
    position: relative;
    overflow: hidden;
}

.category-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--terracotta) 0%, var(--terracotta-light) 100%);
    opacity: 0;
    transition: opacity 0.35s;
    border-radius: 0 0 2px 2px;
}

.category-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 16px 40px var(--shadow-card);
    border-color: transparent;
}

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

.card-icon {
    width: 56px;
    height: 56px;
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    font-size: 1.5rem;
    background: linear-gradient(135deg, #fdf6f0 0%, #f8ede4 100%);
    color: var(--terracotta);
}

.category-card:nth-child(2) .card-icon {
    background: linear-gradient(135deg, #f2f7f2 0%, #e8f0e9 100%);
    color: var(--sage-deep);
}

.category-card:nth-child(3) .card-icon {
    background: linear-gradient(135deg, #fef9f5 0%, #fdf3ea 100%);
    color: #b8754a;
}

.category-card:nth-child(4) .card-icon {
    background: linear-gradient(135deg, #f5f8f3 0%, #eef3ec 100%);
    color: #7d8f7e;
}

.category-card h3 {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 10px;
    color: var(--warm-brown);
    letter-spacing: -0.01em;
}

.category-card p {
    font-size: 0.9rem;
    opacity: 0.65;
    line-height: 1.6;
    margin-bottom: 16px;
    color: var(--warm-brown-soft);
}

.card-link {
    font-weight: 600;
    font-size: 0.85rem;
    text-decoration: none;
    color: var(--terracotta);
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: gap 0.3s;
}

.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: var(--radius-xl);
    overflow: hidden;
    box-shadow: 0 20px 48px var(--shadow-card);
    position: relative;
}

.feature-image::after {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: var(--radius-xl);
    border: 1px solid rgba(255, 255, 255, 0.4);
    pointer-events: none;
}

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

.feature-text h3 {
    font-size: 1.8rem;
    font-weight: 800;
    margin-bottom: 16px;
    color: var(--warm-brown);
    letter-spacing: -0.02em;
}

.feature-text p {
    opacity: 0.7;
    margin-bottom: 24px;
    line-height: 1.7;
    color: var(--warm-brown-soft);
}

.feature-list {
    list-style: none;
}

.feature-list li {
    padding: 10px 0;
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 0.95rem;
    color: var(--warm-brown-soft);
    border-bottom: 1px solid var(--border-light);
}

.feature-list li:last-child {
    border-bottom: none;
}

.feature-list li::before {
    content: '✓';
    font-weight: 700;
    color: var(--sage-deep);
    background: var(--sage-light);
    width: 26px;
    height: 26px;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    flex-shrink: 0;
}

/* ============ 数据条 ============ */
.stats-bar {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    text-align: center;
}

.stat-item {
    padding: 32px 20px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-light);
    background: var(--warm-white);
    transition: all 0.3s;
    position: relative;
}

.stat-item:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 32px var(--shadow-card);
}

.stat-item::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 40px;
    height: 3px;
    border-radius: 2px;
    background: var(--terracotta-light);
}

.stat-number {
    font-size: 2.6rem;
    font-weight: 800;
    color: var(--terracotta);
    letter-spacing: -0.03em;
    line-height: 1;
}

.stat-item:nth-child(2) .stat-number {
    color: var(--sage-deep);
}

.stat-item:nth-child(3) .stat-number {
    color: #b8754a;
}

.stat-item:nth-child(4) .stat-number {
    color: #7d8f7e;
}

.stat-label {
    font-size: 0.9rem;
    opacity: 0.6;
    margin-top: 8px;
    color: var(--warm-brown-soft);
    font-weight: 500;
}

/* ============ 内容墙 ============ */
.content-wall {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 28px;
}

.content-wall-item {
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--border-light);
    background: var(--warm-white);
    transition: all 0.35s cubic-bezier(0.25, 0.8, 0.25, 1.2);
}

.content-wall-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 16px 40px var(--shadow-card);
}

.content-wall-item img {
    width: 100%;
    height: 220px;
    object-fit: cover;
    display: block;
}

.content-wall-body {
    padding: 24px;
}

.content-wall-body h4 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--warm-brown);
    letter-spacing: -0.01em;
}

.content-wall-body p {
    font-size: 0.88rem;
    opacity: 0.6;
    line-height: 1.6;
    color: var(--warm-brown-soft);
}

.content-wall-body .card-link {
    margin-top: 8px;
}

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

.faq-item {
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    margin-bottom: 10px;
    overflow: hidden;
    cursor: pointer;
    background: var(--warm-white);
    transition: all 0.3s;
}

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

.faq-item.open {
    border-color: var(--terracotta-light);
    box-shadow: 0 4px 20px var(--shadow-warm);
}

.faq-item .faq-question {
    padding: 20px 24px;
    font-weight: 600;
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--warm-brown);
    font-size: 1rem;
    letter-spacing: -0.01em;
}

.faq-item .faq-question::after {
    content: '+';
    font-size: 1.4rem;
    font-weight: 300;
    color: var(--terracotta);
    transition: transform 0.3s;
    flex-shrink: 0;
    margin-left: 12px;
}

.faq-item.open .faq-question::after {
    transform: rotate(45deg);
}

.faq-item .faq-answer {
    padding: 0 24px 20px;
    display: none;
    opacity: 0.7;
    line-height: 1.7;
    color: var(--warm-brown-soft);
    font-size: 0.9rem;
}

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

/* ============ CTA横幅 ============ */
.cta-banner {
    padding: 64px 32px;
    text-align: center;
    border-radius: var(--radius-xl);
    color: #fff;
    background: linear-gradient(160deg, #c8784a 0%, #a85d32 30%, #8a4a28 60%, #7d6048 100%);
    position: relative;
    overflow: hidden;
    box-shadow: 0 20px 48px rgba(168, 93, 50, 0.3);
}

.cta-banner::before {
    content: '';
    position: absolute;
    top: -60px;
    right: -60px;
    width: 300px;
    height: 300px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.06);
    pointer-events: none;
}

.cta-banner::after {
    content: '';
    position: absolute;
    bottom: -40px;
    left: -40px;
    width: 200px;
    height: 200px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.04);
    pointer-events: none;
}

.cta-banner h2 {
    color: #fff;
    font-size: 2.2rem;
    font-weight: 800;
    margin-bottom: 12px;
    letter-spacing: -0.02em;
    position: relative;
    z-index: 1;
}

.cta-banner p {
    opacity: 0.85;
    margin-bottom: 28px;
    font-size: 1.05rem;
    position: relative;
    z-index: 1;
}

.cta-banner .btn-primary {
    background: #fff;
    color: var(--terracotta-deep);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
    position: relative;
    z-index: 1;
    font-weight: 700;
}

.cta-banner .btn-primary:hover {
    background: #fdfcf9;
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.2);
    color: #8a4a28;
}

/* ============ 页脚 ============ */
.site-footer {
    padding: 64px 0 32px;
    background: #3d2e28;
    color: rgba(255, 255, 255, 0.8);
}

.site-footer .container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 28px;
}

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

.footer-brand .logo {
    color: #fff;
    margin-bottom: 14px;
}

.footer-brand p {
    opacity: 0.6;
    font-size: 0.9rem;
    line-height: 1.7;
}

.footer-col h4 {
    color: #fff;
    font-weight: 700;
    margin-bottom: 16px;
    font-size: 0.95rem;
    letter-spacing: 0.02em;
}

.footer-col a {
    display: block;
    color: rgba(255, 255, 255, 0.55);
    text-decoration: none;
    font-size: 0.88rem;
    padding: 5px 0;
    transition: color 0.25s;
}

.footer-col a:hover {
    color: var(--terracotta-light);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    margin-top: 48px;
    padding-top: 24px;
    text-align: center;
    font-size: 0.85rem;
    opacity: 0.5;
    color: rgba(255, 255, 255, 0.7);
}

/* ============ 工具类 ============ */
.text-accent {
    color: var(--terracotta);
}

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

.text-center .section-desc {
    margin-left: auto;
    margin-right: auto;
}

.seo-description {
    max-width: 640px;
    margin: 0 auto 56px;
    opacity: 0.7;
    text-align: center;
    line-height: 1.7;
    font-size: 1rem;
    color: var(--warm-brown-soft);
}

.mt-0 {
    margin-top: 0 !important;
}

.mb-0 {
    margin-bottom: 0 !important;
}

/* ============ 装饰元素 ============ */
.section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 3px;
    border-radius: 2px;
    background: linear-gradient(90deg, transparent, var(--terracotta-light), transparent);
    opacity: 0.5;
}

.section:first-of-type::before {
    display: none;
}

/* ============ 响应式 ============ */
@media (max-width: 1024px) {
    .hero .container {
        grid-template-columns: 1fr;
        gap: 40px;
        text-align: center;
    }
    .hero-content {
        max-width: 100%;
    }
    .hero p {
        margin-left: auto;
        margin-right: auto;
    }
    .hero-buttons {
        justify-content: center;
    }
    .hero-image {
        max-width: 500px;
        margin: 0 auto;
    }
    .hero h1 {
        font-size: 2.6rem;
    }
}

@media (max-width: 768px) {
    .section {
        padding: 64px 0;
    }
    .feature-block {
        grid-template-columns: 1fr;
        gap: 36px;
    }
    .feature-image {
        order: -1;
    }
    .stats-bar {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
    }
    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 32px;
    }
    .hero h1 {
        font-size: 2.2rem;
    }
    .hero p {
        font-size: 1rem;
    }
    .section-title {
        font-size: 1.8rem;
    }
    .main-nav {
        display: none;
    }
    .menu-toggle {
        display: flex;
        align-items: center;
        justify-content: center;
    }
    .main-nav.open {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 72px;
        left: 0;
        width: 100%;
        background: rgba(250, 247, 242, 0.98);
        padding: 24px;
        border-bottom: 1px solid var(--border-light);
        box-shadow: 0 12px 32px var(--shadow-warm);
        gap: 16px;
        backdrop-filter: blur(18px);
        -webkit-backdrop-filter: blur(18px);
    }
    .main-nav.open a {
        font-size: 1rem;
        padding: 8px 0;
    }
    .main-nav.open .nav-cta {
        text-align: center;
        display: block;
        margin-top: 8px;
    }
}

@media (max-width: 480px) {
    .cards-grid,
    .content-wall,
    .stats-bar {
        grid-template-columns: 1fr;
    }
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 28px;
    }
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    .hero-buttons .btn {
        width: 100%;
        justify-content: center;
    }
    .hero h1 {
        font-size: 1.8rem;
    }
    .section-title {
        font-size: 1.5rem;
    }
    .container {
        padding: 0 16px;
    }
    .header-inner {
        padding: 0 16px;
    }
    .cta-banner {
        padding: 40px 20px;
        border-radius: var(--radius-lg);
    }
    .cta-banner h2 {
        font-size: 1.5rem;
    }
    .stat-number {
        font-size: 2rem;
    }
}