/* 基础重置 */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
body {
    font-family: system-ui, 'PingFang SC', 'Microsoft YaHei', sans-serif;
    overflow-x: hidden;
    background: #faf7f2;
    color: #3d3027;
    line-height: 1.6;
}

/* 核心布局 — 必须居中 */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}
.section {
    padding: 80px 0;
    position: relative;
}
.section:nth-child(even) {
    background: #f5f0e8;
}
.section:nth-child(even)::before {
    content: '';
    position: absolute;
    top: -40px;
    left: 0;
    width: 100%;
    height: 80px;
    background: #f5f0e8;
    border-radius: 50% 50% 0 0 / 100% 100% 0 0;
    z-index: 0;
}
.section:nth-child(even) .container {
    position: relative;
    z-index: 1;
}

/* 导航 — 固定顶部 */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(250, 247, 242, 0.92);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid rgba(92, 122, 70, 0.12);
    transition: all 0.3s ease;
}
.site-header.scrolled {
    box-shadow: 0 2px 24px rgba(61, 48, 39, 0.08);
}
.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: 1.25rem;
    text-decoration: none;
    color: #3d3027;
    letter-spacing: -0.3px;
}
.logo-icon {
    width: 38px;
    height: 38px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    background: linear-gradient(135deg, #5c7a46, #7a9d5e);
    color: #fff;
    font-weight: 800;
    box-shadow: 0 2px 10px rgba(92, 122, 70, 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: #5a4a3a;
    transition: all 0.25s ease;
    position: relative;
    padding: 4px 0;
}
.main-nav a::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background: #c4734f;
    border-radius: 1px;
    transition: width 0.3s ease;
}
.main-nav a:hover {
    color: #c4734f;
}
.main-nav a:hover::after {
    width: 100%;
}
.nav-cta {
    padding: 10px 22px;
    border-radius: 25px;
    color: #fff !important;
    font-weight: 600;
    background: linear-gradient(135deg, #c4734f, #d48965);
    box-shadow: 0 3px 14px rgba(196, 115, 79, 0.3);
    letter-spacing: 0.3px;
    transition: all 0.3s ease !important;
}
.nav-cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(196, 115, 79, 0.4);
    color: #fff !important;
}
.nav-cta::after {
    display: none !important;
}
.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 8px;
    background: none;
    border: none;
}
.menu-toggle span {
    width: 24px;
    height: 2.5px;
    background: #3d3027;
    border-radius: 2px;
    transition: all 0.3s ease;
}

/* 首页Hero */
.hero {
    min-height: 70vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
    background: linear-gradient(170deg, #faf7f2 0%, #f0e9db 50%, #faf7f2 100%);
}
.hero::before {
    content: '';
    position: absolute;
    top: -80px;
    right: -120px;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(92, 122, 70, 0.06) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}
.hero::after {
    content: '';
    position: absolute;
    bottom: -60px;
    left: -80px;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(196, 115, 79, 0.05) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}
.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: center;
    position: relative;
    z-index: 1;
}
.hero-content {
    max-width: 720px;
}
.hero-eyebrow {
    display: inline-block;
    font-size: 0.8rem;
    font-weight: 700;
    padding: 6px 16px;
    border-radius: 20px;
    margin-bottom: 18px;
    background: rgba(92, 122, 70, 0.1);
    color: #5c7a46;
    letter-spacing: 1.5px;
    text-transform: uppercase;
}
.hero h1 {
    font-size: 3.2rem;
    line-height: 1.15;
    margin-bottom: 20px;
    font-weight: 800;
    letter-spacing: -1px;
    color: #3d3027;
}
.hero h1 .highlight {
    background: linear-gradient(180deg, transparent 60%, rgba(201, 169, 110, 0.4) 60%);
    padding: 0 4px;
}
.hero p {
    font-size: 1.1rem;
    opacity: 0.75;
    max-width: 520px;
    margin-bottom: 34px;
    color: #5a4a3a;
    line-height: 1.7;
}
.hero-buttons {
    display: flex;
    gap: 16px;
}
.hero-image {
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 20px 50px rgba(61, 48, 39, 0.12);
    transform: rotate(-1deg);
    transition: transform 0.4s ease;
}
.hero-image:hover {
    transform: rotate(0deg) scale(1.01);
}
.hero-image img {
    width: 100%;
    height: auto;
    display: block;
}

/* 按钮 */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 13px 30px;
    border-radius: 25px;
    font-weight: 600;
    cursor: pointer;
    border: none;
    text-decoration: none;
    transition: all 0.3s ease;
    font-size: 0.95rem;
    letter-spacing: 0.2px;
}
.btn-primary {
    color: #fff;
    background: linear-gradient(135deg, #5c7a46, #6d8f52);
    box-shadow: 0 4px 16px rgba(92, 122, 70, 0.3);
}
.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(92, 122, 70, 0.4);
}
.btn-outline {
    background: transparent;
    border: 2px solid #c4734f;
    color: #c4734f;
}
.btn-outline:hover {
    background: #c4734f;
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 4px 16px rgba(196, 115, 79, 0.25);
}

/* 标签/标题 */
.section-label {
    display: inline-block;
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 2.5px;
    margin-bottom: 14px;
    color: #c4734f;
    text-transform: uppercase;
    position: relative;
    padding-left: 36px;
}
.section-label::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 24px;
    height: 2px;
    background: #c4734f;
    border-radius: 1px;
}
.section-title {
    font-size: 2.2rem;
    margin-bottom: 16px;
    font-weight: 800;
    letter-spacing: -0.5px;
    color: #3d3027;
    line-height: 1.2;
}
.section-desc {
    max-width: 600px;
    opacity: 0.7;
    margin-bottom: 44px;
    font-size: 1.05rem;
    color: #5a4a3a;
    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: 16px;
    padding: 30px 26px;
    border: 1px solid rgba(92, 122, 70, 0.1);
    transition: all 0.35s ease;
    background: #fffdf9;
    position: relative;
    overflow: hidden;
}
.category-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, #5c7a46, #c9a96e);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.4s ease;
    border-radius: 0 0 4px 4px;
}
.category-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 32px rgba(61, 48, 39, 0.1);
    border-color: rgba(92, 122, 70, 0.2);
}
.category-card:hover::before {
    transform: scaleX(1);
}
.card-icon {
    width: 52px;
    height: 52px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 18px;
    font-size: 1.4rem;
    background: linear-gradient(135deg, rgba(92, 122, 70, 0.1), rgba(122, 157, 94, 0.15));
    color: #5c7a46;
}
.card-link {
    font-weight: 600;
    font-size: 0.85rem;
    text-decoration: none;
    color: #c4734f;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: gap 0.3s ease;
    margin-top: 8px;
}
.card-link:hover {
    gap: 10px;
}
.category-card h3 {
    font-size: 1.15rem;
    margin-bottom: 8px;
    color: #3d3027;
    font-weight: 700;
}
.category-card p {
    font-size: 0.9rem;
    color: #5a4a3a;
    opacity: 0.75;
    line-height: 1.6;
}

/* 特性块 */
.feature-block {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 56px;
    align-items: center;
}
.feature-image {
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 16px 40px rgba(61, 48, 39, 0.1);
}
.feature-image img {
    width: 100%;
    height: auto;
    display: block;
}
.feature-text h3 {
    font-size: 1.6rem;
    font-weight: 700;
    margin-bottom: 14px;
    color: #3d3027;
    letter-spacing: -0.3px;
}
.feature-text p {
    color: #5a4a3a;
    opacity: 0.75;
    line-height: 1.7;
    margin-bottom: 18px;
}
.feature-list {
    list-style: none;
}
.feature-list li {
    padding: 8px 0;
    display: flex;
    align-items: center;
    gap: 10px;
    color: #3d3027;
    font-weight: 500;
    font-size: 0.95rem;
}
.feature-list li::before {
    content: '✓';
    font-weight: 700;
    color: #5c7a46;
    font-size: 1rem;
    background: rgba(92, 122, 70, 0.1);
    width: 24px;
    height: 24px;
    border-radius: 50%;
    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: 16px;
    border: 1px solid rgba(92, 122, 70, 0.1);
    background: #fffdf9;
    transition: all 0.3s ease;
}
.stat-item:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 24px rgba(61, 48, 39, 0.08);
    border-color: rgba(92, 122, 70, 0.2);
}
.stat-number {
    font-size: 2.4rem;
    font-weight: 800;
    background: linear-gradient(135deg, #5c7a46, #7a9d5e);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -1px;
}
.stat-label {
    font-size: 0.9rem;
    opacity: 0.65;
    margin-top: 8px;
    color: #5a4a3a;
    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: 16px;
    overflow: hidden;
    border: 1px solid rgba(92, 122, 70, 0.08);
    transition: all 0.35s ease;
    background: #fffdf9;
}
.content-wall-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 14px 36px rgba(61, 48, 39, 0.12);
}
.content-wall-item img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    display: block;
}
.content-wall-body {
    padding: 22px;
}
.content-wall-body h4 {
    font-size: 1.05rem;
    font-weight: 700;
    color: #3d3027;
    margin-bottom: 6px;
}
.content-wall-body p {
    font-size: 0.9rem;
    color: #5a4a3a;
    opacity: 0.7;
    line-height: 1.5;
}

/* FAQ */
.faq-list {
    max-width: 800px;
    margin: 0 auto;
}
.faq-item {
    border: 1px solid rgba(92, 122, 70, 0.1);
    border-radius: 12px;
    margin-bottom: 10px;
    overflow: hidden;
    cursor: pointer;
    background: #fffdf9;
    transition: all 0.3s ease;
}
.faq-item:hover {
    border-color: rgba(92, 122, 70, 0.25);
}
.faq-item .faq-question {
    padding: 18px 22px;
    font-weight: 600;
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: #3d3027;
    font-size: 1rem;
}
.faq-item .faq-question::after {
    content: '+';
    font-size: 1.3rem;
    font-weight: 300;
    color: #5c7a46;
    transition: transform 0.3s ease;
}
.faq-item.open .faq-question::after {
    transform: rotate(45deg);
}
.faq-item .faq-answer {
    padding: 0 22px 18px;
    display: none;
    opacity: 0.7;
    color: #5a4a3a;
    line-height: 1.7;
    font-size: 0.95rem;
}
.faq-item.open {
    border-color: rgba(92, 122, 70, 0.3);
    box-shadow: 0 4px 16px rgba(61, 48, 39, 0.06);
}
.faq-item.open .faq-answer {
    display: block;
}

/* CTA横幅 */
.cta-banner {
    padding: 60px 30px;
    text-align: center;
    border-radius: 20px;
    color: #fff;
    background: linear-gradient(135deg, #5c7a46, #4a6337, #3d5230);
    position: relative;
    overflow: hidden;
}
.cta-banner::before {
    content: '';
    position: absolute;
    top: -50px;
    right: -50px;
    width: 200px;
    height: 200px;
    background: rgba(255, 255, 255, 0.04);
    border-radius: 50%;
    pointer-events: none;
}
.cta-banner::after {
    content: '';
    position: absolute;
    bottom: -40px;
    left: -40px;
    width: 160px;
    height: 160px;
    background: rgba(255, 255, 255, 0.03);
    border-radius: 50%;
    pointer-events: none;
}
.cta-banner h2 {
    color: #fff;
    font-size: 2rem;
    font-weight: 800;
    letter-spacing: -0.5px;
    position: relative;
    z-index: 1;
}
.cta-banner p {
    color: rgba(255, 255, 255, 0.8);
    margin: 12px 0 24px;
    position: relative;
    z-index: 1;
}
.cta-banner .btn-primary {
    background: #fff;
    color: #3d3027;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
    position: relative;
    z-index: 1;
    font-weight: 700;
}
.cta-banner .btn-primary:hover {
    box-shadow: 0 8px 28px rgba(0, 0, 0, 0.3);
    transform: translateY(-3px);
}

/* 页脚 */
.site-footer {
    padding: 56px 0 28px;
    background: #3d3027;
    color: rgba(255, 255, 255, 0.8);
}
.site-footer .container {
    position: relative;
}
.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
}
.footer-brand h4 {
    font-size: 1.2rem;
    font-weight: 700;
    color: #fff;
    margin-bottom: 10px;
}
.footer-brand p {
    opacity: 0.65;
    line-height: 1.7;
    font-size: 0.9rem;
}
.footer-col h5 {
    font-size: 0.9rem;
    font-weight: 700;
    color: #fff;
    margin-bottom: 14px;
    letter-spacing: 0.5px;
}
.footer-col a {
    display: block;
    color: rgba(255, 255, 255, 0.6);
    text-decoration: none;
    padding: 4px 0;
    font-size: 0.9rem;
    transition: color 0.25s ease;
}
.footer-col a:hover {
    color: #c9a96e;
}
.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    margin-top: 40px;
    padding-top: 20px;
    text-align: center;
    font-size: 0.85rem;
    opacity: 0.5;
    color: rgba(255, 255, 255, 0.7);
}

/* 工具类 */
.text-accent {
    color: #c4734f;
}
.text-center {
    text-align: center;
}
.seo-description {
    max-width: 600px;
    margin: 0 auto 48px;
    opacity: 0.7;
    text-align: center;
    color: #5a4a3a;
    font-size: 1rem;
    line-height: 1.7;
}
.mt-0 {
    margin-top: 0;
}
.mb-0 {
    margin-bottom: 0;
}

/* ⚠️ 响应式 */
@media (max-width: 768px) {
    .hero .container {
        grid-template-columns: 1fr;
        gap: 32px;
    }
    .hero {
        min-height: auto;
        padding: 100px 0 60px;
    }
    .hero h1 {
        font-size: 2.2rem;
    }
    .hero-image {
        transform: none;
        order: -1;
        max-width: 400px;
        margin: 0 auto;
    }
    .feature-block {
        grid-template-columns: 1fr;
        gap: 32px;
    }
    .feature-image {
        order: -1;
    }
    .stats-bar {
        grid-template-columns: repeat(2, 1fr);
    }
    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 28px;
    }
    .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: #faf7f2;
        padding: 24px;
        border-bottom: 1px solid rgba(92, 122, 70, 0.12);
        box-shadow: 0 8px 30px rgba(61, 48, 39, 0.1);
        gap: 16px;
    }
    .section-title {
        font-size: 1.7rem;
    }
    .section {
        padding: 56px 0;
    }
    .cta-banner h2 {
        font-size: 1.5rem;
    }
}
@media (max-width: 480px) {
    .cards-grid,
    .content-wall,
    .stats-bar {
        grid-template-columns: 1fr;
    }
    .footer-grid {
        grid-template-columns: 1fr;
    }
    .hero-buttons {
        flex-direction: column;
    }
    .hero h1 {
        font-size: 1.8rem;
    }
    .btn {
        width: 100%;
        justify-content: center;
    }
    .section-title {
        font-size: 1.5rem;
    }
    .stat-number {
        font-size: 1.8rem;
    }
}