/* --- 1. Variables (Nature & Modern) --- */
:root {
    --primary: #5F8D4E;      /* 鼠尾草绿 */
    --primary-dark: #4a6f3c;
    --sand: #f4f1ea;         /* 米色背景 */
    --cream: #f9f8f6;        /* 奶油白 */
    --dark: #2c3329;         /* 深墨绿黑 */
    --text: #5c5c5c;         /* 柔和灰 */
    
    --shadow: 0 10px 30px rgba(95, 141, 78, 0.1);
    --radius: 20px;
    
    --font-main: 'Noto Sans SC', sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: var(--font-main); color: var(--text); background: #fff; line-height: 1.7; }
a { text-decoration: none; color: inherit; transition: 0.3s; }
ul { list-style: none; }
img { max-width: 100%; display: block; }

.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.section { padding: 100px 0; }
.bg-cream { background: var(--cream); }
.center { text-align: center; }

/* Typography */
h1, h2, h3, h4 { color: var(--dark); font-weight: 700; }
.section-header { margin-bottom: 60px; }
.section-header h2 { font-size: 36px; margin-bottom: 15px; }
.section-header p { font-size: 16px; color: #888; }
.flex-head { display: flex; justify-content: space-between; align-items: flex-end; }

/* Buttons */
.btn-primary {
    display: inline-block; background: var(--primary); color: #fff;
    padding: 14px 36px; border-radius: 50px; font-weight: 500; letter-spacing: 1px;
    box-shadow: 0 10px 20px rgba(95, 141, 78, 0.2);
}
.btn-primary:hover { background: var(--primary-dark); transform: translateY(-3px); }

.btn-quote {
    background: var(--dark); color: #fff; padding: 10px 24px; border-radius: 50px; font-size: 14px;
}
.btn-quote:hover { background: var(--primary); }

.link-more { color: var(--primary); font-weight: 500; border-bottom: 1px solid transparent; }
.link-more:hover { border-color: var(--primary); }

.btn-more-full {
    display: block; width: 100%; text-align: center; padding: 12px 0;
    border: 1px solid #eee; border-radius: 12px;
    color: var(--text); font-size: 14px; font-weight: 500;
    margin-top: 20px; transition: 0.3s;
}
.btn-more-full:hover {
    background: var(--primary); color: #fff; border-color: var(--primary);
}

/* --- 2. Header --- */
#header {
    position: fixed; top: 0; width: 100%; height: 90px;
    background: rgba(255,255,255,0.9); backdrop-filter: blur(10px);
    z-index: 1000; transition: 0.3s;
}
.header-inner { display: flex; justify-content: space-between; align-items: center; height: 100%; }

.logo { font-size: 22px; font-weight: 700; color: var(--dark); display: flex; align-items: center; gap: 8px; }
.logo-mark { 
    background: var(--primary); color: #fff; width: 32px; height: 32px; 
    border-radius: 8px; display: flex; align-items: center; justify-content: center; font-size: 18px;
}
.thin { font-weight: 300; }

.menu { display: flex; gap: 40px; }
.menu a { font-size: 15px; color: var(--dark); font-weight: 500; }
.menu a:hover, .menu a.active { color: var(--primary); }

.header-right { display: flex; align-items: center; gap: 20px; }
.toggle-menu { display: none; font-size: 24px; cursor: pointer; }

/* --- 3. Hero --- */
.hero { position: relative; height: 100vh; display: flex; align-items: center; }
.hero-image { position: absolute; top: 0; left: 0; width: 100%; height: 100%; z-index: -2; }
.hero-image img { width: 100%; height: 100%; object-fit: cover; }
.hero-overlay {
    position: absolute; top: 0; left: 0; width: 100%; height: 100%;
    background: linear-gradient(90deg, rgba(255,255,255,0.95) 0%, rgba(255,255,255,0.7) 40%, rgba(255,255,255,0) 100%);
    z-index: -1;
}

.hero-content { width: 100%; }
.hero-text { max-width: 600px; }

.sub-head { color: var(--primary); font-weight: 700; letter-spacing: 2px; text-transform: uppercase; font-size: 14px; margin-bottom: 20px; display: block; }
.hero h1 { font-size: 64px; line-height: 1.1; margin-bottom: 30px; color: var(--dark); }
.highlight { position: relative; z-index: 1; display: inline-block; }
.highlight::after {
    content: ''; position: absolute; bottom: 5px; left: 0; width: 100%; height: 15px;
    background: rgba(95, 141, 78, 0.3); z-index: -1; border-radius: 4px;
}
.hero p { font-size: 18px; color: var(--text); margin-bottom: 40px; }

.hero-action { display: flex; gap: 30px; align-items: center; }
.play-video { display: flex; align-items: center; gap: 15px; cursor: pointer; color: var(--dark); font-weight: 500; }
.play-btn { 
    width: 50px; height: 50px; background: #fff; border-radius: 50%; 
    display: flex; align-items: center; justify-content: center; 
    box-shadow: 0 5px 15px rgba(0,0,0,0.1); color: var(--primary); transition: 0.3s;
}
.play-video:hover .play-btn { transform: scale(1.1); color: var(--dark); }

/* --- 4. Services --- */
.service-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 30px; }
.srv-box { 
    background: #fff; padding: 40px 25px; border-radius: var(--radius); 
    text-align: center; transition: 0.3s; border: 1px solid transparent;
}
.srv-box:hover { box-shadow: var(--shadow); border-color: #f0f0f0; transform: translateY(-5px); }

.icon-round {
    width: 70px; height: 70px; background: var(--sand); color: var(--primary);
    border-radius: 50%; display: flex; align-items: center; justify-content: center;
    font-size: 28px; margin: 0 auto 25px; transition: 0.3s;
}
.srv-box:hover .icon-round { background: var(--primary); color: #fff; }

.srv-box h3 { font-size: 20px; margin-bottom: 15px; }
.srv-box p { font-size: 14px; color: #888; }

/* --- 5. Gallery --- */
.gallery-grid {
    display: grid; grid-template-columns: 2fr 1fr; grid-template-rows: 250px 250px; gap: 20px;
}
.gallery-item { position: relative; border-radius: var(--radius); overflow: hidden; }
.large { grid-row: span 2; }
.gallery-item img { width: 100%; height: 100%; object-fit: cover; transition: 0.5s; }
.gallery-item:hover img { transform: scale(1.05); }

.g-info {
    position: absolute; bottom: 20px; left: 20px;
    background: #fff; padding: 15px 25px; border-radius: 12px;
    box-shadow: 0 10px 20px rgba(0,0,0,0.1);
}
.g-info h3 { font-size: 16px; margin-bottom: 2px; }
.g-info span { font-size: 12px; color: #888; }

/* --- 6. News (Modern) --- */
.news-modern-cols { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; }

.news-card {
    background: #fff; padding: 30px; border-radius: var(--radius);
    box-shadow: 0 5px 20px rgba(0,0,0,0.03); border: 1px solid #f5f5f5;
    transition: 0.3s;
}
.news-card:hover { box-shadow: var(--shadow); border-color: transparent; }

.card-head { display: flex; align-items: center; gap: 12px; margin-bottom: 25px; color: var(--primary); }
.card-head i { font-size: 20px; }
.card-head h4 { font-size: 18px; color: var(--dark); margin: 0; }

.news-list-soft li { margin-bottom: 15px; border-bottom: 1px dashed #f0f0f0; padding-bottom: 15px; }
.news-list-soft li:last-child { border: none; margin-bottom: 0; padding-bottom: 0; }
.news-list-soft a { display: block; font-size: 14px; color: #444; line-height: 1.5; }
.news-list-soft a:hover { color: var(--primary); }
.news-list-soft .tag { 
    background: var(--sand); color: var(--primary-dark); font-size: 11px; 
    padding: 2px 6px; border-radius: 4px; vertical-align: middle; margin-right: 5px; font-weight: 500;
}

/* --- 7. Footer --- */
footer { background: var(--dark); color: #ccc; padding: 80px 0 30px; }
.f-top { 
    display: flex; justify-content: space-between; align-items: center; 
    padding-bottom: 40px; border-bottom: 1px solid rgba(255,255,255,0.1); margin-bottom: 40px; 
}
.f-logo { color: #fff; font-size: 24px; font-weight: 700; }
.f-logo span { color: var(--primary); }
.f-social a { color: #fff; font-size: 20px; margin-left: 20px; opacity: 0.7; }
.f-social a:hover { opacity: 1; }

.f-grid { display: flex; gap: 80px; margin-bottom: 40px; }
.f-grid h4 { color: #fff; font-size: 16px; margin-bottom: 20px; }
.f-grid p { font-size: 14px; margin-bottom: 10px; opacity: 0.8; }

.copyright { text-align: center; font-size: 12px; opacity: 0.5; }

/* Responsive */
@media (max-width: 992px) {
    .hero-content { max-width: 100%; text-align: center; }
    .hero-text { margin: 0 auto; }
    .hero-action { justify-content: center; }
    .hero-image { position: relative; height: 300px; }
    .hero { height: auto; flex-direction: column; }
    .hero-overlay { display: none; }
    
    .service-grid, .gallery-grid, .news-modern-cols { grid-template-columns: 1fr; }
    .large { grid-row: auto; }
    .gallery-grid { grid-template-rows: auto; }
    .menu, .btn-quote { display: none; }
    .toggle-menu { display: block; }
}