/* ============================================================
   至品汇国际家居官网 主样式
   风格：现代简约 + 木色暖调，响应式
   ============================================================ */
:root{
  --primary:#8b5a2b;        /* 木棕主色 */
  --primary-dark:#6b4320;
  --accent:#c89b5a;         /* 金棕点缀 */
  --bg:#faf8f5;
  --text:#2b2b2b;
  --muted:#6b6b6b;
  --line:#eae3d8;
  --white:#fff;
  --shadow:0 4px 20px rgba(0,0,0,.06);
  --radius:10px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;color:var(--text);background:var(--bg);line-height:1.7}
img{max-width:100%;display:block}
a{color:var(--primary);text-decoration:none;transition:.2s}
a:hover{color:var(--primary-dark)}
ul{list-style:none}
.container{max-width:1200px;margin:0 auto;padding:0 20px}

/* ---------- 顶部联系条 ---------- */
.topbar{background:#2b2b2b;color:#ddd;font-size:13px}
.topbar-inner{display:flex;justify-content:space-between;align-items:center;height:36px}
.topbar-left{display:flex;gap:18px}
.topbar a{color:#fff}
.topbar-right{display:flex;gap:14px}
@media(max-width:768px){.hide-sm{display:none}.hide-md{display:none}}

/* ---------- 头部导航 ---------- */
.header{background:var(--white);box-shadow:var(--shadow);position:sticky;top:0;z-index:90}
.header-inner{display:flex;justify-content:space-between;align-items:center;height:78px}
.logo{display:flex;align-items:center;gap:10px}
.logo img{height:46px;width:auto}
.logo-text strong{display:block;font-size:20px;color:var(--primary-dark);letter-spacing:1px}
.logo-text span{font-size:12px;color:var(--muted)}
.nav{display:flex;gap:6px}
.nav a{padding:8px 16px;color:var(--text);font-size:15px;border-radius:6px}
.nav a:hover,.nav a.active{color:var(--primary);background:#f5ece0}
.nav-toggle{display:none;background:none;border:0;font-size:26px;cursor:pointer}
@media(max-width:900px){
  .nav{position:absolute;top:78px;left:0;right:0;background:#fff;flex-direction:column;padding:10px 20px;
        border-top:1px solid var(--line);display:none;box-shadow:var(--shadow)}
  .nav.open{display:flex}
  .nav-toggle{display:block}
}

/* ---------- 通用区块 ---------- */
.section{padding:60px 0}
.section-title{text-align:center;margin-bottom:36px}
.section-title h2{font-size:30px;color:var(--primary-dark);margin-bottom:8px}
.section-title .sub{color:var(--muted);font-size:15px}
.grid{display:grid;gap:24px}
.grid-4{grid-template-columns:repeat(4,1fr)}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-2{grid-template-columns:repeat(2,1fr)}
@media(max-width:900px){.grid-4{grid-template-columns:repeat(2,1fr)}.grid-3,.grid-2{grid-template-columns:1fr}}

/* ---------- 首页 Banner ---------- */
.hero{position:relative;height:520px;background:linear-gradient(135deg,#3a2a1a,#8b5a2b);color:#fff;overflow:hidden}
.hero-slide{position:absolute;inset:0;opacity:0;transition:opacity 1s;display:flex;align-items:center}
.hero-slide.active{opacity:1}
.hero-slide .container{width:100%}
.hero h1{font-size:44px;line-height:1.3;margin-bottom:14px;text-shadow:0 2px 8px rgba(0,0,0,.3)}
.hero p{font-size:18px;margin-bottom:26px;opacity:.95}
.hero .btn{display:inline-block;padding:12px 32px;background:var(--accent);color:#fff;border-radius:30px;margin-right:12px}
.hero .btn.ghost{background:transparent;border:1px solid #fff}
.hero-slide.cover{background-size:cover;background-position:center}
.hero-slide.cover::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(0,0,0,.55),rgba(0,0,0,.15))}
.hero-slide .container{position:relative;z-index:1}
.hero-dots{position:absolute;bottom:18px;left:0;right:0;text-align:center;z-index:2}
.hero-dots span{display:inline-block;width:10px;height:10px;border-radius:50%;background:#fff5;margin:0 4px;cursor:pointer}
.hero-dots span.on{background:#fff}
@media(max-width:768px){.hero{height:420px}.hero h1{font-size:28px}.hero p{font-size:15px}}

/* ---------- 优势卡片 ---------- */
.advantage{background:#fff}
.adv-card{text-align:center;padding:30px 18px;border:1px solid var(--line);border-radius:var(--radius);background:#fff}
.adv-card .icon{font-size:38px;margin-bottom:10px}
.adv-card h3{font-size:17px;color:var(--primary-dark);margin-bottom:8px}
.adv-card p{font-size:14px;color:var(--muted)}

/* ---------- 产品卡片 ---------- */
.product-card{background:#fff;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);transition:.25s}
.product-card:hover{transform:translateY(-4px)}
.product-card .pic{aspect-ratio:4/3;background:#eee center/cover no-repeat}
.product-card .info{padding:16px}
.product-card h3{font-size:16px;margin-bottom:6px}
.product-card .style{display:inline-block;font-size:12px;color:var(--primary);background:#f5ece0;padding:2px 8px;border-radius:4px;margin-bottom:8px}
.product-card p{font-size:13px;color:var(--muted);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:overflow:hidden;overflow:hidden}
.hot-badge{position:absolute;top:10px;right:10px;background:#d9534f;color:#fff;font-size:12px;padding:2px 8px;border-radius:4px}
.pic-wrap{position:relative}

/* ---------- 新闻 ---------- */
.news-item{display:flex;gap:18px;padding:18px;background:#fff;border-radius:var(--radius);margin-bottom:14px;box-shadow:var(--shadow)}
.news-item .date{min-width:78px;text-align:center;color:var(--primary)}
.news-item .date .d{font-size:26px;font-weight:bold;display:block}
.news-item h3{font-size:17px;margin-bottom:6px}
.news-item p{font-size:14px;color:var(--muted)}

/* ---------- FAQ ---------- */
.faq-item{background:#fff;border-radius:var(--radius);margin-bottom:12px;box-shadow:var(--shadow);overflow:hidden}
.faq-q{padding:16px 20px;cursor:pointer;display:flex;justify-content:space-between;align-items:center;font-weight:500}
.faq-q::after{content:"+";font-size:22px;color:var(--primary)}
.faq-item.open .faq-q::after{content:"−"}
.faq-a{max-height:0;overflow:hidden;transition:.3s;color:var(--muted);padding:0 20px}
.faq-item.open .faq-a{max-height:300px;padding:0 20px 16px}

/* ---------- 表单 ---------- */
.form-box{background:#fff;padding:30px;border-radius:var(--radius);box-shadow:var(--shadow)}
.form-group{margin-bottom:16px}
.form-group label{display:block;margin-bottom:6px;font-size:14px}
.form-group input,.form-group textarea,.form-group select{
  width:100%;padding:10px 12px;border:1px solid var(--line);border-radius:6px;font-size:14px;font-family:inherit}
.btn-primary{background:var(--primary);color:#fff;border:0;padding:11px 28px;border-radius:6px;cursor:pointer;font-size:15px}
.btn-primary:hover{background:var(--primary-dark)}

/* ---------- 面包屑 ---------- */
.crumb{background:#fff;padding:12px 0;font-size:13px;color:var(--muted);border-bottom:1px solid var(--line)}
.crumb a{color:var(--muted)}

/* ---------- 分页 ---------- */
.pager{text-align:center;margin:24px 0}
.pager a,.pager span{display:inline-block;padding:6px 12px;border:1px solid var(--line);margin:0 3px;border-radius:4px}
.pager .cur{background:var(--primary);color:#fff;border-color:var(--primary)}

/* ---------- 底部 ---------- */
.footer{background:#2b2b2b;color:#bbb;margin-top:40px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1.5fr 1fr;gap:30px;padding:50px 20px}
@media(max-width:900px){.footer-grid{grid-template-columns:1fr 1fr}}
@media(max-width:600px){.footer-grid{grid-template-columns:1fr}}
.footer h4{color:#fff;margin-bottom:14px;font-size:16px}
.f-about{font-size:13px;line-height:1.8}
.f-links li,.f-contact li{margin-bottom:8px;font-size:14px}
.f-links a{color:#bbb}
.f-links a:hover{color:#fff}
.f-qr{width:120px;height:120px;background:#fff;padding:4px;border-radius:6px}
.f-qr-tip{font-size:12px;margin-top:6px}
.footer-bottom{border-top:1px solid #3d3d3d;padding:16px 0;font-size:13px}
.footer-bottom a{color:#bbb}
.footer-bottom a:hover{color:#fff}
.police-badge{width:14px;height:14px;vertical-align:-2px;margin-right:4px}

/* ---------- 悬浮按钮 ---------- */
.float-bar{position:fixed;right:16px;bottom:80px;z-index:80;display:flex;flex-direction:column;gap:10px}
.float-item{width:54px;height:54px;border-radius:50%;background:var(--primary);color:#fff;
  display:flex;flex-direction:column;align-items:center;justify-content:center;font-size:11px;
  box-shadow:0 4px 14px rgba(0,0,0,.2);cursor:pointer}
.float-item:hover{background:var(--primary-dark);color:#fff}
.fi-icon{font-size:18px;line-height:1}

/* 微信弹层 */
.wechat-mask{position:fixed;inset:0;background:rgba(0,0,0,.6);z-index:100;display:none;align-items:center;justify-content:center}
.wechat-mask.show{display:flex}
.wechat-pop{background:#fff;padding:24px;border-radius:10px;text-align:center;position:relative;width:280px}
.wechat-pop img{width:200px;height:200px;margin:0 auto 10px}
.wechat-close{position:absolute;right:10px;top:6px;border:0;background:none;font-size:26px;cursor:pointer;color:#999}

/* ---------- 后台 ---------- */
.admin-wrap{display:flex;min-height:100vh}
.admin-side{width:220px;background:#1f1f1f;color:#ccc;padding:20px 0}
.admin-side h1{color:#fff;font-size:18px;padding:0 20px 18px;border-bottom:1px solid #333}
.admin-side a{display:block;color:#ccc;padding:11px 20px;font-size:14px}
.admin-side a:hover,.admin-side a.on{background:#2c2c2c;color:#fff;border-left:3px solid var(--accent)}
.admin-main{flex:1;padding:24px;background:#f4f4f4}
.admin-main h2{font-size:20px;margin-bottom:18px}
.card{background:#fff;padding:20px;border-radius:8px;box-shadow:var(--shadow);margin-bottom:16px}
.admin-table{width:100%;border-collapse:collapse;background:#fff}
.admin-table th,.admin-table td{padding:10px 12px;border-bottom:1px solid var(--line);font-size:14px;text-align:left}
.admin-table th{background:#fafafa}
.admin-toolbar{margin-bottom:14px;display:flex;justify-content:space-between;align-items:center}
.tag{display:inline-block;padding:2px 8px;border-radius:4px;font-size:12px}
.tag-on{background:#e6f4ea;color:#1e7e34}
.tag-off{background:#fbeaeA;color:#a94442}
.muted{color:#999;font-size:13px}
.alert{padding:10px 14px;border-radius:6px;margin-bottom:14px;font-size:14px}
.alert-ok{background:#e6f4ea;color:#1e7e34}
.alert-err{background:#fbeaea;color:#a94442}
.login-box{max-width:380px;margin:80px auto;background:#fff;padding:30px;border-radius:10px;box-shadow:var(--shadow)}