/* ========================================================
   攀枝花花城慧农农业官网 - 全局样式表
   配色: 暖橙#E86A33 + 生态绿#2D6A4F + 米白#FAF7F2
   响应式: PC >= 1024px | Tablet 768-1023px | Mobile < 768px
   ======================================================== */

/* CSS变量 */
:root {
    --color-primary: #E86A33;
    --color-primary-dark: #C55A2A;
    --color-secondary: #2D6A4F;
    --color-secondary-dark: #1B4332;
    --color-accent: #F4A261;
    --color-bg: #FAF7F2;
    --color-bg-alt: #F0EBE3;
    --color-text: #3E2723;
    --color-text-light: #6D5D55;
    --color-text-muted: #9E8E85;
    --color-white: #FFFFFF;
    --color-border: #E8E0D8;
    --color-success: #4CAF50;
    --color-error: #E53935;
    
    --font-main: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    --font-serif: Georgia, "Times New Roman", serif;
    
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.1);
    --shadow-lg: 0 8px 30px rgba(0,0,0,0.12);
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 20px;
    
    --container-max: 1280px;
    --container-padding: 24px;
    --section-gap: 80px;
    --header-height: 72px;
}

/* 基础重置 */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
body { font-family: var(--font-main); font-size: 16px; line-height: 1.7; color: var(--color-text); background: var(--color-bg); }
img { max-width: 100%; height: auto; display: block; }
a { color: var(--color-primary); text-decoration: none; transition: color 0.2s; }
a:hover { color: var(--color-primary-dark); }
ul, ol { list-style: none; }
h1, h2, h3, h4, h5, h6 { line-height: 1.3; font-weight: 600; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }
input, textarea, select { font-family: inherit; font-size: inherit; }

/* 辅助 */
.skip-link { position: absolute; left: -9999px; top: auto; width: 1px; height: 1px; overflow: hidden; }
.skip-link:focus { position: fixed; left: 16px; top: 16px; width: auto; height: auto; padding: 12px 20px; background: var(--color-primary); color: #fff; z-index: 9999; border-radius: var(--radius-sm); }
.container { max-width: var(--container-max); margin: 0 auto; padding: 0 var(--container-padding); }
.section-title { text-align: center; margin-bottom: 48px; }
.section-title h2 { font-size: clamp(1.5rem, 3vw, 2.2rem); color: var(--color-text); margin-bottom: 12px; }
.section-title h2 span { color: var(--color-primary); }
.section-title p { color: var(--color-text-light); font-size: 1.05rem; max-width: 600px; margin: 0 auto; }
.section { padding: var(--section-gap) 0; }
.section-alt { background: var(--color-bg-alt); }
.btn { display: inline-flex; align-items: center; gap: 8px; padding: 12px 28px; border-radius: var(--radius-md); font-weight: 500; transition: all 0.25s; cursor: pointer; border: none; font-size: 1rem; }
.btn-primary { background: var(--color-primary); color: var(--color-white); }
.btn-primary:hover { background: var(--color-primary-dark); color: var(--color-white); transform: translateY(-2px); box-shadow: var(--shadow-md); }
.btn-secondary { background: var(--color-secondary); color: var(--color-white); }
.btn-secondary:hover { background: var(--color-secondary-dark); color: var(--color-white); transform: translateY(-2px); }
.btn-outline { background: transparent; color: var(--color-primary); border: 2px solid var(--color-primary); }
.btn-outline:hover { background: var(--color-primary); color: var(--color-white); }

/* 页头 */
.header-top { background: var(--color-secondary); color: rgba(255,255,255,0.85); font-size: 0.85rem; padding: 8px 0; }
.header-top .container { display: flex; justify-content: space-between; align-items: center; }
.header-top a { color: rgba(255,255,255,0.9); }
.header-tel { display: inline-flex; align-items: center; gap: 6px; }
.header-divider { margin: 0 12px; opacity: 0.5; }

.main-nav { background: var(--color-white); box-shadow: var(--shadow-sm); position: sticky; top: 0; z-index: 100; }
.nav-container { display: flex; align-items: center; justify-content: space-between; height: var(--header-height); }
.site-logo { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--color-text); }
.logo-icon { font-size: 1.8rem; }
.logo-text strong { display: block; font-size: 1.2rem; color: var(--color-secondary); line-height: 1.2; }
.logo-text small { display: block; font-size: 0.7rem; color: var(--color-text-muted); font-weight: 400; letter-spacing: 1px; }
.nav-menu { display: flex; gap: 4px; }
.nav-link { display: block; padding: 8px 16px; color: var(--color-text); font-size: 0.95rem; font-weight: 500; border-radius: var(--radius-sm); position: relative; }
.nav-link:hover, .nav-link.active { color: var(--color-primary); background: rgba(232,106,51,0.06); }
.nav-link.active::after { content: ''; position: absolute; bottom: -4px; left: 16px; right: 16px; height: 2px; background: var(--color-primary); border-radius: 1px; }

.nav-toggle { display: none; width: 44px; height: 44px; align-items: center; justify-content: center; }
.hamburger, .hamburger::before, .hamburger::after { display: block; width: 24px; height: 2px; background: var(--color-text); border-radius: 1px; transition: all 0.3s; position: relative; }
.hamburger::before, .hamburger::after { content: ''; position: absolute; left: 0; }
.hamburger::before { top: -7px; }
.hamburger::after { top: 7px; }

/* 轮播 */
.hero-slider { position: relative; width: 100%; height: 600px; overflow: hidden; background: var(--color-secondary-dark); }
.hero-slide { position: absolute; inset: 0; opacity: 0; transition: opacity 1s ease; }
.hero-slide.active { opacity: 1; }
.hero-slide-bg { width: 100%; height: 100%; object-fit: cover; opacity: 0.6; }
.hero-slide-content { position: absolute; inset: 0; display: flex; align-items: center; justify-content: center; text-align: center; color: var(--color-white); padding: 0 24px; }
.hero-slide-inner { max-width: 800px; }
.hero-slide-inner h1 { font-size: clamp(1.8rem, 4vw, 3.2rem); font-weight: 700; margin-bottom: 20px; text-shadow: 0 2px 20px rgba(0,0,0,0.3); }
.hero-slide-inner p { font-size: clamp(1rem, 2vw, 1.3rem); margin-bottom: 32px; opacity: 0.95; text-shadow: 0 1px 10px rgba(0,0,0,0.3); }
.hero-dots { position: absolute; bottom: 30px; left: 50%; transform: translateX(-50%); display: flex; gap: 10px; z-index: 10; }
.hero-dot { width: 12px; height: 12px; border-radius: 50%; background: rgba(255,255,255,0.4); cursor: pointer; border: 2px solid transparent; transition: all 0.3s; }
.hero-dot.active { background: var(--color-primary); border-color: var(--color-white); transform: scale(1.2); }

/* 统计数据 */
.stats-bar { background: linear-gradient(135deg, var(--color-secondary) 0%, var(--color-secondary-dark) 100%); color: var(--color-white); padding: 40px 0; }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; text-align: center; }
.stat-item h3 { font-size: 2.2rem; font-weight: 700; color: var(--color-accent); margin-bottom: 4px; }
.stat-item p { opacity: 0.85; font-size: 0.95rem; }

/* 卡片网格 */
.card-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 24px; }
.card { background: var(--color-white); border-radius: var(--radius-md); overflow: hidden; box-shadow: var(--shadow-sm); transition: all 0.3s; border: 1px solid var(--color-border); }
.card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.card-img { aspect-ratio: 16/10; overflow: hidden; background: var(--color-bg-alt); }
.card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s; }
.card:hover .card-img img { transform: scale(1.05); }
.card-body { padding: 20px; }
.card-body h3 { font-size: 1.15rem; margin-bottom: 8px; color: var(--color-text); }
.card-body p { color: var(--color-text-light); font-size: 0.92rem; line-height: 1.6; }
.card-meta { display: flex; align-items: center; gap: 12px; margin-top: 12px; font-size: 0.8rem; color: var(--color-text-muted); }
.card-price { color: var(--color-primary); font-size: 1.2rem; font-weight: 700; }
.card-price span { font-size: 0.8rem; font-weight: 400; color: var(--color-text-muted); }

/* 产品分类标签 */
.category-tabs { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; margin-bottom: 40px; }
.cat-tab { padding: 10px 24px; border-radius: 50px; border: 1px solid var(--color-border); color: var(--color-text-light); cursor: pointer; transition: all 0.25s; font-size: 0.95rem; background: var(--color-white); }
.cat-tab:hover, .cat-tab.active { background: var(--color-primary); color: var(--color-white); border-color: var(--color-primary); }

/* 特性列表 */
.feature-list { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 20px; }
.feature-item { display: flex; align-items: flex-start; gap: 12px; padding: 16px; background: var(--color-white); border-radius: var(--radius-md); border: 1px solid var(--color-border); }
.feature-icon { width: 44px; height: 44px; border-radius: var(--radius-sm); background: rgba(232,106,51,0.1); color: var(--color-primary); display: flex; align-items: center; justify-content: center; font-size: 1.3rem; flex-shrink: 0; }
.feature-item h4 { font-size: 1rem; margin-bottom: 4px; }
.feature-item p { font-size: 0.85rem; color: var(--color-text-light); }

/* 关于区域 */
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
.about-img { position: relative; border-radius: var(--radius-lg); overflow: hidden; aspect-ratio: 4/3; }
.about-img img { width: 100%; height: 100%; object-fit: cover; }
.about-content h2 { font-size: 2rem; margin-bottom: 20px; color: var(--color-text); }
.about-content h2 span { color: var(--color-primary); }
.about-content p { color: var(--color-text-light); margin-bottom: 16px; }
.about-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 32px; }
.about-stat h4 { font-size: 1.6rem; color: var(--color-primary); }
.about-stat p { font-size: 0.85rem; color: var(--color-text-muted); }

/* 新闻列表 */
.news-list { display: flex; flex-direction: column; gap: 20px; }
.news-item { display: grid; grid-template-columns: 200px 1fr; gap: 24px; padding: 20px; background: var(--color-white); border-radius: var(--radius-md); border: 1px solid var(--color-border); transition: all 0.3s; }
.news-item:hover { box-shadow: var(--shadow-md); transform: translateX(4px); }
.news-item-img { aspect-ratio: 16/10; border-radius: var(--radius-sm); overflow: hidden; background: var(--color-bg-alt); }
.news-item-img img { width: 100%; height: 100%; object-fit: cover; }
.news-item-body h3 { font-size: 1.1rem; margin-bottom: 8px; }
.news-item-body p { color: var(--color-text-light); font-size: 0.9rem; margin-bottom: 12px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.news-item-meta { display: flex; gap: 16px; font-size: 0.8rem; color: var(--color-text-muted); }
.news-item-meta span { display: inline-flex; align-items: center; gap: 4px; }

/* 分页 */
.pagination { margin-top: 40px; display: flex; justify-content: center; }
.page-list { display: flex; gap: 6px; }
.page-item { display: inline-flex; align-items: center; justify-content: center; min-width: 40px; height: 40px; padding: 0 12px; border-radius: var(--radius-sm); border: 1px solid var(--color-border); color: var(--color-text); font-size: 0.9rem; transition: all 0.2s; }
.page-item:hover { border-color: var(--color-primary); color: var(--color-primary); }
.page-item.active { background: var(--color-primary); color: var(--color-white); border-color: var(--color-primary); }
.page-ellipsis { display: inline-flex; align-items: center; justify-content: center; min-width: 40px; height: 40px; color: var(--color-text-muted); }

/* 页脚 */
.site-footer { background: var(--color-text); color: rgba(255,255,255,0.7); }
.footer-main { padding: 60px 0 40px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1.5fr; gap: 40px; }
.footer-logo { display: flex; align-items: center; gap: 8px; font-size: 1.2rem; color: var(--color-white); margin-bottom: 16px; }
.footer-desc { font-size: 0.9rem; line-height: 1.7; margin-bottom: 20px; }
.footer-social { display: flex; gap: 12px; }
.footer-social a { width: 36px; height: 36px; border-radius: 50%; background: rgba(255,255,255,0.1); display: flex; align-items: center; justify-content: center; color: var(--color-white); transition: all 0.2s; }
.footer-social a:hover { background: var(--color-primary); transform: translateY(-2px); }
.footer-links h4 { color: var(--color-white); font-size: 1rem; margin-bottom: 20px; }
.footer-links ul li { margin-bottom: 10px; }
.footer-links ul li a { color: rgba(255,255,255,0.7); font-size: 0.9rem; transition: color 0.2s; }
.footer-links ul li a:hover { color: var(--color-accent); }
.footer-contact h4 { color: var(--color-white); font-size: 1rem; margin-bottom: 20px; }
.footer-contact ul li { display: flex; align-items: flex-start; gap: 10px; margin-bottom: 12px; font-size: 0.9rem; }
.footer-contact svg { flex-shrink: 0; margin-top: 3px; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.1); padding: 20px 0; }
.footer-bottom .container { display: flex; justify-content: space-between; align-items: center; font-size: 0.85rem; }
.footer-links-legal { display: flex; gap: 20px; }
.footer-links-legal a { color: rgba(255,255,255,0.5); }
.footer-links-legal a:hover { color: var(--color-accent); }

/* 悬浮按钮 */
.float-buttons { position: fixed; right: 20px; bottom: 100px; z-index: 90; display: flex; flex-direction: column; gap: 10px; }
.float-btn { display: flex; align-items: center; justify-content: center; width: 50px; height: 50px; border-radius: 50%; background: var(--color-primary); color: var(--color-white); box-shadow: var(--shadow-md); transition: all 0.3s; position: relative; }
.float-btn:hover { transform: scale(1.1); }
.float-btn span { position: absolute; right: 55px; background: var(--color-text); color: var(--color-white); padding: 4px 10px; border-radius: var(--radius-sm); font-size: 0.8rem; white-space: nowrap; opacity: 0; pointer-events: none; transition: opacity 0.2s; }
.float-btn:hover span { opacity: 1; }
.float-tel { background: var(--color-primary); }
.float-msg { background: var(--color-secondary); }
.float-top { background: var(--color-text); opacity: 0; visibility: hidden; transition: all 0.3s; }
.float-top.visible { opacity: 1; visibility: visible; }

/* 面包屑 */
.breadcrumb { background: var(--color-bg-alt); padding: 16px 0; }
.breadcrumb-inner { display: flex; align-items: center; gap: 8px; font-size: 0.85rem; color: var(--color-text-muted); }
.breadcrumb-inner a { color: var(--color-text-light); }
.breadcrumb-inner a:hover { color: var(--color-primary); }
.breadcrumb-sep { opacity: 0.5; }

/* 页面标题 */
.page-header { background: linear-gradient(135deg, var(--color-secondary) 0%, var(--color-secondary-dark) 100%); color: var(--color-white); padding: 60px 0; text-align: center; }
.page-header h1 { font-size: clamp(1.5rem, 3vw, 2.2rem); margin-bottom: 12px; }
.page-header p { opacity: 0.85; max-width: 600px; margin: 0 auto; }

/* 留言表单 */
.form-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.form-group { display: flex; flex-direction: column; gap: 6px; }
.form-group.full { grid-column: 1 / -1; }
.form-group label { font-size: 0.9rem; font-weight: 500; color: var(--color-text); }
.form-group label .required { color: var(--color-error); margin-left: 2px; }
.form-group input, .form-group textarea, .form-group select { padding: 12px 16px; border: 1px solid var(--color-border); border-radius: var(--radius-sm); background: var(--color-white); transition: all 0.2s; font-size: 1rem; }
.form-group input:focus, .form-group textarea:focus, .form-group select:focus { outline: none; border-color: var(--color-primary); box-shadow: 0 0 0 3px rgba(232,106,51,0.1); }
.form-group textarea { min-height: 140px; resize: vertical; }
.form-submit { grid-column: 1 / -1; margin-top: 10px; }
.form-hint { font-size: 0.8rem; color: var(--color-success); background: rgba(76,175,80,0.1); padding: 12px 16px; border-radius: var(--radius-sm); margin-bottom: 20px; }
.form-error { font-size: 0.8rem; color: var(--color-error); background: rgba(229,57,53,0.1); padding: 12px 16px; border-radius: var(--radius-sm); margin-bottom: 20px; }

/* 资质展示 */
.qualify-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 24px; }
.qualify-card { background: var(--color-white); border-radius: var(--radius-md); overflow: hidden; border: 1px solid var(--color-border); transition: all 0.3s; }
.qualify-card:hover { box-shadow: var(--shadow-md); }
.qualify-img { aspect-ratio: 3/4; background: var(--color-bg-alt); overflow: hidden; }
.qualify-img img { width: 100%; height: 100%; object-fit: contain; padding: 20px; }
.qualify-body { padding: 20px; }
.qualify-body h3 { font-size: 1.05rem; margin-bottom: 8px; }
.qualify-body p { font-size: 0.85rem; color: var(--color-text-light); margin-bottom: 4px; }

/* 相册 */
.album-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 20px; }
.album-card { position: relative; border-radius: var(--radius-md); overflow: hidden; aspect-ratio: 4/3; cursor: pointer; }
.album-card img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s; }
.album-card:hover img { transform: scale(1.05); }
.album-overlay { position: absolute; inset: 0; background: linear-gradient(to top, rgba(0,0,0,0.7) 0%, transparent 50%); display: flex; align-items: flex-end; padding: 20px; color: var(--color-white); }
.album-overlay h3 { font-size: 1.1rem; }

/* 内页内容 */
.content-wrap { max-width: 900px; margin: 0 auto; background: var(--color-white); padding: 40px; border-radius: var(--radius-md); border: 1px solid var(--color-border); }
.content-wrap h1, .content-wrap h2, .content-wrap h3 { margin: 24px 0 12px; color: var(--color-text); }
.content-wrap p { margin-bottom: 16px; color: var(--color-text-light); }
.content-wrap ul, .content-wrap ol { margin-bottom: 16px; padding-left: 24px; }
.content-wrap ul li { list-style: disc; margin-bottom: 6px; color: var(--color-text-light); }
.content-wrap ol li { list-style: decimal; margin-bottom: 6px; color: var(--color-text-light); }
.content-wrap img { border-radius: var(--radius-sm); margin: 16px 0; }

/* 产品详情 */
.product-detail-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; }
.product-gallery { border-radius: var(--radius-md); overflow: hidden; background: var(--color-bg-alt); aspect-ratio: 1; }
.product-gallery img { width: 100%; height: 100%; object-fit: cover; }
.product-info h1 { font-size: 1.8rem; margin-bottom: 8px; }
.product-info .subtitle { color: var(--color-text-muted); margin-bottom: 16px; }
.product-info .price { font-size: 2rem; color: var(--color-primary); font-weight: 700; margin-bottom: 24px; }
.product-info .price span { font-size: 0.9rem; font-weight: 400; color: var(--color-text-muted); }
.product-meta-list { display: flex; flex-direction: column; gap: 12px; margin-bottom: 24px; }
.product-meta-item { display: flex; gap: 12px; padding: 12px 16px; background: var(--color-bg); border-radius: var(--radius-sm); }
.product-meta-item strong { color: var(--color-text); min-width: 80px; }
.product-meta-item span { color: var(--color-text-light); }

/* 合作伙伴 */
.partner-list { display: flex; flex-wrap: wrap; justify-content: center; gap: 30px; align-items: center; }
.partner-item { filter: grayscale(100%); opacity: 0.6; transition: all 0.3s; }
.partner-item:hover { filter: grayscale(0%); opacity: 1; }

/* 图片懒加载 */
.lazy-img { opacity: 0; transition: opacity 0.5s; }
.lazy-img.loaded { opacity: 1; }

/* ===================== 响应式 ===================== */

@media (max-width: 1024px) {
    :root { --section-gap: 60px; }
    .footer-grid { grid-template-columns: repeat(2, 1fr); }
    .about-grid { gap: 40px; }
    .product-detail-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
    :root { --container-padding: 16px; --section-gap: 48px; --header-height: 60px; }
    .header-top { display: none; }
    .nav-toggle { display: flex; }
    .nav-menu { position: fixed; top: var(--header-height); left: 0; right: 0; bottom: 0; background: var(--color-white); flex-direction: column; padding: 20px; gap: 0; transform: translateX(100%); transition: transform 0.3s; z-index: 99; }
    .nav-menu.open { transform: translateX(0); }
    .nav-link { padding: 14px 16px; border-bottom: 1px solid var(--color-border); }
    .nav-link.active::after { display: none; }
    .hero-slider { height: 450px; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 20px; }
    .about-grid { grid-template-columns: 1fr; }
    .news-item { grid-template-columns: 1fr; }
    .news-item-img { aspect-ratio: 16/9; }
    .footer-grid { grid-template-columns: 1fr; gap: 32px; }
    .footer-bottom .container { flex-direction: column; gap: 12px; text-align: center; }
    .form-grid { grid-template-columns: 1fr; }
    .float-buttons { right: 12px; bottom: 80px; }
    .float-btn { width: 44px; height: 44px; }
    .content-wrap { padding: 24px; }
    .page-header { padding: 40px 0; }
    .about-stats { grid-template-columns: repeat(3, 1fr); gap: 12px; }
}

@media (max-width: 480px) {
    .stats-grid { grid-template-columns: 1fr 1fr; }
    .stat-item h3 { font-size: 1.6rem; }
    .hero-slider { height: 380px; }
    .card-grid { grid-template-columns: 1fr; }
}

/* 打印样式 */
@media print {
    .site-header, .site-footer, .float-buttons, .nav-toggle { display: none; }
    main { padding: 0; }
}