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

:root {
    --primary: #2F4F2F;
    --primary-dark: #1C301C;
    --secondary: #FF6600;
    --text: #333;
    --text-light: #666;
    --bg: #fff;
    --bg-light: #f9f9f9;
    --border: #eee;
    --radius: 12px;
    --shadow: 0 2px 12px rgba(0,0,0,0.08);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    color: var(--text);
    line-height: 1.6;
    background: var(--bg);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 72px;
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 1px 3px rgba(0,0,0,0.05);
    z-index: 1000;
}
.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 100%;
}
.logo {
    font-size: 24px;
    font-weight: bold;
    color: var(--primary);
}
.nav-links {
    display: flex;
    gap: 32px;
    list-style: none;
}
.nav-links a {
    text-decoration: none;
    color: var(--text);
    font-size: 15px;
    transition: color 0.3s;
}
.nav-links a:hover { color: var(--primary); }
.hamburger {
    display: none;
    flex-direction: column;
    gap: 4px;
    cursor: pointer;
    background: none;
    border: none;
}
.hamburger span {
    width: 24px;
    height: 2px;
    background: var(--text);
    transition: 0.3s;
}

.hero {
    margin-top: 72px;
    position: relative;
    aspect-ratio: 16/7;
    background-size: cover;
    background-position: center;
    display: flex;
    align-items: center;
    color: #fff;
}
.hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(0,0,0,0.4);
}
.hero-content {
    position: relative;
    z-index: 1;
    max-width: 600px;
}
.hero h1 {
    font-size: 48px;
    margin-bottom: 16px;
    line-height: 1.2;
}
.hero p {
    font-size: 18px;
    margin-bottom: 32px;
    opacity: 0.95;
}
.btn {
    display: inline-block;
    padding: 14px 36px;
    background: var(--primary);
    color: #fff;
    border-radius: 50px;
    text-decoration: none;
    font-size: 16px;
    font-weight: 500;
    transition: transform 0.3s, box-shadow 0.3s;
}
.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0,0,0,0.2);
}

section { padding: 80px 0; }
.section-title {
    text-align: center;
    font-size: 32px;
    margin-bottom: 12px;
}
.section-sub {
    text-align: center;
    color: var(--text-light);
    margin-bottom: 48px;
    font-size: 16px;
}

.grid-4 {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}
.grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.grid-2 {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 48px;
    align-items: center;
}
.card {
    background: var(--bg-light);
    padding: 32px 24px;
    border-radius: var(--radius);
    text-align: center;
    transition: transform 0.3s, box-shadow 0.3s;
}
.card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow);
}
.card-icon {
    font-size: 40px;
    margin-bottom: 16px;
}
.card h3 { font-size: 18px; margin-bottom: 8px; }
.card p { color: var(--text-light); font-size: 14px; }

.about-img {
    width: 100%;
    aspect-ratio: 4/3;
    object-fit: cover;
    border-radius: var(--radius);
}
.about-text h2 { font-size: 28px; margin-bottom: 16px; }
.about-text p {
    color: var(--text-light);
    margin-bottom: 12px;
    line-height: 1.8;
}

.product-card, .article-card {
    background: #fff;
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: transform 0.3s;
}
.product-card:hover, .article-card:hover { transform: translateY(-4px); }
.product-card img, .article-card img {
    width: 100%;
    height: 100%;
    aspect-ratio: 4/3;
    object-fit: cover;
}
.article-card img { aspect-ratio: 16/9; }
.card-body { padding: 20px; }
.card-body h3 { font-size: 18px; margin-bottom: 8px; }
.card-body p {
    color: var(--text-light);
    font-size: 14px;
    margin-bottom: 12px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.card-body .date {
    color: var(--primary);
    font-size: 13px;
    margin-bottom: 8px;
}
.card-body a {
    color: var(--primary);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
}

.stats { background: var(--bg-light); }
.stat-item { text-align: center; }
.stat-num {
    font-size: 40px;
    font-weight: bold;
    color: var(--primary);
    margin-bottom: 8px;
}
.stat-label { color: var(--text-light); font-size: 15px; }

.cta {
    position: relative;
    aspect-ratio: 16/3;
    background-size: cover;
    background-position: center;
    color: #fff;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
}
.cta::before {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(0,0,0,0.5);
}
.cta-content { position: relative; z-index: 1; }
.cta h2 { font-size: 36px; margin-bottom: 12px; }
.cta p {
    font-size: 18px;
    margin-bottom: 24px;
    opacity: 0.95;
}

.faq-list {
    max-width: 800px;
    margin: 0 auto;
}
.faq-item {
    background: #fff;
    border-radius: var(--radius);
    margin-bottom: 16px;
    box-shadow: var(--shadow);
    overflow: hidden;
}
.faq-q {
    padding: 20px 24px;
    font-weight: 500;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.faq-a {
    padding: 0 24px 20px;
    color: var(--text-light);
    display: none;
}
.faq-item.active .faq-a { display: block; }

footer {
    background: #222;
    color: #aaa;
    padding: 60px 0 30px;
}
.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}
.footer-col h4 {
    color: #fff;
    font-size: 16px;
    margin-bottom: 20px;
}
.footer-col ul { list-style: none; }
.footer-col li { margin-bottom: 12px; }
.footer-col a {
    color: #aaa;
    text-decoration: none;
    font-size: 14px;
    transition: color 0.3s;
}
.footer-col a:hover { color: var(--primary); }
.footer-logo {
    font-size: 24px;
    font-weight: bold;
    color: #fff;
    margin-bottom: 16px;
}
.copyright {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid #333;
    font-size: 13px;
}

.article-detail {
    margin-top: 100px;
    padding-bottom: 80px;
}
.article-detail h1 {
    font-size: 32px;
    margin-bottom: 16px;
    line-height: 1.4;
}
.article-meta {
    color: var(--text-light);
    font-size: 14px;
    margin-bottom: 32px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--border);
}
.article-detail img {
    width: 100%;
    aspect-ratio: 16/9;
    object-fit: cover;
    border-radius: var(--radius);
    margin: 24px 0;
}
.article-detail p {
    font-size: 16px;
    line-height: 1.8;
    margin-bottom: 16px;
    color: var(--text);
}
.back-btn {
    display: inline-block;
    margin-bottom: 24px;
    color: var(--primary);
    text-decoration: none;
    font-size: 15px;
}

@media (max-width: 992px) {
    .grid-4 { grid-template-columns: repeat(2, 1fr); }
    .grid-3 { grid-template-columns: repeat(2, 1fr); }
    .grid-2 { grid-template-columns: 1fr; gap: 32px; }
    .hero h1 { font-size: 36px; }
    .footer-grid { grid-template-columns: repeat(2, 1fr); gap: 30px; }
    .article-card img, .product-card img { aspect-ratio: 16/10; }
}

@media (max-width: 768px) {
    nav { height: 64px; }
    .hero { margin-top: 64px; aspect-ratio: 4/5; }
    .hero h1 { font-size: 28px; }
    .hero p { font-size: 15px; }
    section { padding: 40px 0; }
    .section-title { font-size: 24px; }
    .container { padding: 0 16px; }
    .grid-4 { grid-template-columns: repeat(2, 1fr) !important; gap: 12px; }
    .grid-3 { grid-template-columns: 1fr !important; gap: 20px; }
    .card { padding: 24px 16px; }
    .card-icon { font-size: 28px; }
    .article-card { display: block !important; width: 100% !important; }
    .article-card img {
        width: 100% !important;
        aspect-ratio: 16/9 !important;
        height: auto !important;
        display: block !important;
    }
    .card-body { padding: 16px; }
    .card-body h3 { font-size: 17px; -webkit-line-clamp: 2; }
    .card-body p { font-size: 14px; -webkit-line-clamp: 3; }
    .product-card img { aspect-ratio: 4/3 !important; }
    .cta { aspect-ratio: 4/3; padding: 40px 20px; }
    .cta h2 { font-size: 24px; }
    .stat-num { font-size: 24px; }
    .footer-grid { grid-template-columns: repeat(2, 1fr); gap: 24px; }
    .footer-col h4 { font-size: 15px; }
    .footer-col a, .footer-col li { font-size: 13px; }
    .article-detail h1 { font-size: 24px; }
    .article-detail img { aspect-ratio: 16/9 !important; margin: 20px 0; border-radius: 12px; }
    .nav-links {
        display: none;
        position: absolute;
        top: 64px;
        left: 0;
        right: 0;
        background: #fff;
        flex-direction: column;
        padding: 20px;
        gap: 16px;
        box-shadow: 0 4px 12px rgba(0,0,0,0.1);
    }
    .nav-links.active { display: flex; }
    .hamburger { display: flex; }
}

@media (max-width: 360px) {
    .grid-4 { gap: 8px; }
    .card h3 { font-size: 15px; }
    .card p { font-size: 12px; -webkit-line-clamp: 2; }
    .card-body p { -webkit-line-clamp: 2; font-size: 13px; }
    .article-card img { aspect-ratio: 16/9 !important; }
}

html.spider-view * {
    visibility: visible !important;
    opacity: 1 !important;
}