:root{
  --green:#1a9e5f;
  --green-d:#0f6b41;
  --green-l:#e8f6ee;
  --ink:#1f2a30;
  --muted:#6b7a82;
  --line:#e6ebee;
  --bg:#ffffff;
  --bg-soft:#f6f9f8;
  --shadow:0 10px 30px rgba(20,60,40,.08);
  --radius:14px;
  --maxw:1200px;
  --header-h:68px;
}
*{box-sizing:border-box;}
html,body{margin:0;padding:0;}
body{
  font-family:"Microsoft YaHei","PingFang SC","Helvetica Neue",Arial,sans-serif;
  color:var(--ink);background:var(--bg);line-height:1.7;font-size:15px;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none;}
img{max-width:100%;display:block;}
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 20px;}

/* 顶部条 */
.topbar{background:var(--ink);color:#cfe;font-size:13px;}
.topbar-inner{display:flex;gap:24px;align-items:center;height:38px;flex-wrap:wrap;}
.topbar span{display:inline-flex;gap:6px;align-items:center;color:#bcd;}
.topbar .hide-sm{display:inline-flex;}

/* 头部/导航 */
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.95);
  backdrop-filter:blur(8px);border-bottom:1px solid var(--line);}
.site-header-inner{display:flex;align-items:center;justify-content:space-between;height:var(--header-h);}
.brand{display:flex;align-items:center;gap:12px;}
.brand-logo{max-height:42px;width:auto;display:block;}
.brand-mark{width:42px;height:42px;border-radius:10px;background:linear-gradient(135deg,var(--green),var(--green-d));
  color:#fff;font-weight:800;display:flex;align-items:center;justify-content:center;letter-spacing:1px;}
.brand-text{display:flex;flex-direction:column;line-height:1.2;}
.brand-text strong{font-size:17px;color:var(--ink);}
.brand-text em{font-style:normal;font-size:12px;color:var(--muted);}
.main-nav{display:flex;gap:6px;}
.main-nav a{padding:10px 14px;border-radius:8px;color:#33424a;font-weight:600;font-size:15px;transition:.2s;}
.main-nav a:hover{color:var(--green);background:var(--green-l);}
.main-nav a.active{color:#fff;background:var(--green);}
.nav-toggle{display:none;background:none;border:none;font-size:26px;color:var(--ink);cursor:pointer;}

/* Hero */
.hero{position:relative;color:#fff;overflow:hidden;
  background:linear-gradient(120deg,rgba(15,107,65,.92),rgba(26,158,95,.85)),
             url("../upfile/20210427/1619527674973349.jpg") center/cover no-repeat;}
.hero::after{content:"";position:absolute;inset:0;background:rgba(8,40,26,.35);}
.hero .container{position:relative;z-index:1;padding:90px 20px;max-width:760px;}
.hero h1{font-size:40px;margin:0 0 16px;line-height:1.25;font-weight:800;}
.hero p{font-size:17px;opacity:.95;margin:0 0 28px;}
.hero .actions{display:flex;gap:14px;flex-wrap:wrap;}

/* Hero 轮播（翻页图 banner） */
.hero-carousel{height:480px;background:none;}
.hero-carousel::after{content:none;}
.hero-carousel .hero-slides{position:absolute;inset:0;z-index:0;}
.hero-carousel .hero-slide{position:absolute;inset:0;opacity:0;transition:opacity .7s ease;}
.hero-carousel .hero-slide.active{opacity:1;}
.hero-carousel .hero-slide img{width:100%;height:100%;object-fit:cover;display:block;}
.hero-arrow{position:absolute;top:50%;transform:translateY(-50%);z-index:3;width:44px;height:44px;border:none;border-radius:50%;
  background:rgba(0,0,0,.35);color:#fff;font-size:22px;line-height:1;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:.2s;}
.hero-arrow:hover{background:rgba(0,0,0,.6);}
.hero-prev{left:18px;}
.hero-next{right:18px;}
.hero-dots{position:absolute;left:50%;bottom:18px;transform:translateX(-50%);z-index:3;display:flex;gap:10px;}
.hero-dots .dot{width:11px;height:11px;padding:0;border:none;border-radius:50%;background:rgba(255,255,255,.5);cursor:pointer;transition:.2s;}
.hero-dots .dot.active{background:#fff;width:28px;border-radius:6px;}
@media (max-width:600px){
  .hero-carousel{height:360px;}
  .hero-carousel h1{font-size:28px;}
}

/* 按钮 */
.btn{display:inline-flex;align-items:center;gap:8px;padding:12px 24px;border-radius:999px;font-weight:700;
  border:2px solid transparent;transition:.2s;cursor:pointer;font-size:15px;}
.btn-primary{background:var(--green);color:#fff;}
.btn-primary:hover{background:var(--green-d);}
.btn-ghost{border-color:#fff;color:#fff;}
.btn-ghost:hover{background:#fff;color:var(--green-d);}
.btn-outline{background:#fff;color:var(--green);border-color:var(--green);}
.btn-outline:hover{background:var(--green);color:#fff;}

/* 区块 */
.section{padding:64px 0;}
.section.soft{background:var(--bg-soft);}
.section-head{text-align:center;margin-bottom:40px;}
.section-head .kicker{color:var(--green);font-weight:700;letter-spacing:2px;font-size:13px;text-transform:uppercase;}
.section-head h2{font-size:30px;margin:8px 0 10px;}
.section-head p{color:var(--muted);max-width:640px;margin:0 auto;}

/* 卡片栅格 */
.grid{display:grid;gap:24px;}
.grid-3{grid-template-columns:repeat(3,1fr);}
.grid-4{grid-template-columns:repeat(4,1fr);}
.grid-2{grid-template-columns:repeat(2,1fr);}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;
  transition:.22s;box-shadow:var(--shadow);}
.card:hover{transform:translateY(-4px);box-shadow:0 16px 40px rgba(20,60,40,.14);}
.card .thumb{aspect-ratio:4/3;overflow:hidden;background:var(--green-l);}
.card .thumb img{width:100%;height:100%;object-fit:cover;transition:.3s;}
.card:hover .thumb img{transform:scale(1.05);}
.card .body{padding:18px 18px 20px;}
.card .body h3{margin:0 0 8px;font-size:18px;}
.card .body p{margin:0;color:var(--muted);font-size:14px;}
.card .meta{margin-top:12px;color:var(--muted);font-size:13px;display:flex;gap:12px;align-items:center;}
.tag{display:inline-block;background:var(--green-l);color:var(--green-d);font-size:12px;padding:3px 10px;border-radius:999px;}

/* 面包屑 */
.crumb{font-size:13px;color:var(--muted);padding:16px 0;}
.crumb a:hover{color:var(--green);}

/* 文章/详情 */
.detail{max-width:860px;margin:0 auto;}
.detail .cover{aspect-ratio:16/8;border-radius:var(--radius);overflow:hidden;margin:8px 0 24px;background:var(--green-l);}
.detail .cover img{width:100%;height:100%;object-fit:cover;}
.prose{font-size:16px;line-height:1.9;}
.prose img{max-width:100%;border-radius:10px;margin:16px 0;}
.prose h2,.prose h3{color:var(--green-d);margin-top:28px;}

/* 产品详情结构化展示 */
.detail .meta{display:flex;gap:12px;align-items:center;color:var(--muted);font-size:13px;flex-wrap:wrap;}
.detail h1{font-size:28px;margin:6px 0 14px;line-height:1.3;}
.lead{font-size:16px;line-height:1.9;color:var(--ink);background:var(--green-l);
  border-left:4px solid var(--green);padding:14px 18px;border-radius:0 10px 10px 0;margin:0 0 8px;}
.blk-h{font-size:19px;color:var(--green-d);margin:28px 0 12px;padding-left:12px;
  border-left:4px solid var(--green);line-height:1.3;}
.feat{list-style:none;margin:0;padding:0;display:grid;gap:10px;}
.feat li{display:flex;gap:10px;align-items:flex-start;font-size:15px;line-height:1.7;color:var(--ink);
  padding:10px 14px;background:var(--bg-soft);border:1px solid var(--line);border-radius:10px;}
.feat li i{color:var(--green);flex:0 0 auto;margin-top:3px;}
/* 列表卡片分类徽标 */
.card .body .cat-tag{display:inline-block;background:var(--green-l);color:var(--green-d);
  font-size:12px;padding:2px 10px;border-radius:999px;margin-bottom:8px;}

/* 侧栏 */
.layout-2{display:grid;grid-template-columns:1fr 300px;gap:36px;align-items:start;}
.sidebar{background:var(--bg-soft);border:1px solid var(--line);border-radius:var(--radius);padding:20px;}
.sidebar h4{margin:0 0 14px;font-size:16px;}
.sidebar ul{list-style:none;margin:0;padding:0;}
.sidebar li a{display:block;padding:10px 12px;border-radius:8px;color:#33424a;}
.sidebar li a:hover,.sidebar li a.active{background:#fff;color:var(--green);box-shadow:var(--shadow);}

/* 表单 */
.form{display:grid;gap:16px;max-width:620px;}
.field{display:flex;flex-direction:column;gap:6px;}
.field label{font-weight:600;font-size:14px;}
.field input,.field textarea,.field select{
  padding:11px 13px;border:1px solid var(--line);border-radius:10px;font:inherit;background:#fff;color:var(--ink);}
.field input:focus,.field textarea:focus{border-color:var(--green);outline:none;box-shadow:0 0 0 3px var(--green-l);}
.field textarea{min-height:130px;resize:vertical;}
.form .row2{display:grid;grid-template-columns:1fr 1fr;gap:16px;}

/* 页脚 */
.site-footer{background:var(--ink);color:#cdd;margin-top:60px;}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1.4fr;gap:32px;padding:48px 0 32px;}
.site-footer h4{color:#fff;margin:0 0 14px;font-size:16px;}
.site-footer p{margin:0 0 8px;font-size:14px;opacity:.85;}
.site-footer ul{list-style:none;margin:0;padding:0;}
.site-footer li{margin:6px 0;}
.site-footer a:hover{color:var(--green);}
.footer-bottom{border-top:1px solid rgba(255,255,255,.12);padding:16px 0;font-size:13px;opacity:.7;}
.footer-bottom .beian{color:#dff;opacity:1;text-decoration:underline;text-underline-offset:2px;}
.footer-bottom .beian:hover{color:var(--green);}
.footer-bottom .container{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;}

/* 分页 */
.pager{display:flex;gap:8px;justify-content:center;margin:36px 0 8px;flex-wrap:wrap;}
.pager a{padding:8px 14px;border:1px solid var(--line);border-radius:8px;color:#33424a;}
.pager a.active,.pager a:hover{background:var(--green);color:#fff;border-color:var(--green);}

/* 提示 */
.notice{padding:14px 16px;border-radius:10px;margin:0 0 18px;}
.notice.ok{background:var(--green-l);color:var(--green-d);}
.notice.err{background:#fdecec;color:#b4232a;}

/* 响应式 */
@media (max-width:980px){
  .grid-4{grid-template-columns:repeat(2,1fr);}
  .grid-3{grid-template-columns:repeat(2,1fr);}
  .layout-2{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;}
}
@media (max-width:680px){
  .main-nav{position:absolute;top:var(--header-h);left:0;right:0;background:#fff;flex-direction:column;
    padding:10px;gap:4px;box-shadow:var(--shadow);display:none;border-bottom:1px solid var(--line);}
  .main-nav.open{display:flex;}
  .nav-toggle{display:block;}
  .hero .container{padding:60px 20px;}
  .hero h1{font-size:30px;}
  .grid-2,.grid-3,.grid-4{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;}
  .topbar .hide-sm{display:none;}
  .form .row2{grid-template-columns:1fr;}
  .section-head h2{font-size:24px;}
}

/* ============ 后台 ============ */
body.admin{background:#eef2f1;}
.admin-shell{position:relative;min-height:100vh;}
.admin-side{position:fixed;top:0;left:0;bottom:0;width:240px;background:#0f2a20;color:#cde;display:flex;flex-direction:column;overflow-y:auto;z-index:50;}
.admin-brand{display:flex;align-items:center;gap:10px;padding:18px 18px;color:#fff;border-bottom:1px solid rgba(255,255,255,.08);}
.admin-brand .brand-mark{background:linear-gradient(135deg,var(--green),var(--green-d));}
.admin-brand strong{display:block;font-size:15px;}
.admin-brand em{font-style:normal;font-size:12px;color:#9cb;}
.admin-side nav{display:flex;flex-direction:column;padding:10px;gap:2px;}
.admin-side nav a{display:flex;align-items:center;gap:10px;padding:11px 14px;border-radius:9px;color:#bcd;font-size:14px;font-weight:600;}
.admin-side nav a:hover{background:rgba(255,255,255,.08);color:#fff;}
.admin-side nav a.active{background:var(--green);color:#fff;}
.admin-main{display:flex;flex-direction:column;margin-left:240px;min-height:100vh;}
.admin-topbar{height:58px;background:#fff;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;padding:0 24px;font-weight:700;position:sticky;top:0;z-index:40;}
.admin-topbar .admin-user{color:var(--muted);font-weight:600;font-size:14px;display:inline-flex;align-items:center;gap:10px;}
.admin-logout{display:inline-flex;align-items:center;gap:5px;color:#fff;background:var(--green);padding:6px 12px;border-radius:8px;font-size:13px;font-weight:600;transition:.2s;}
.admin-logout:hover{background:var(--green-d);}

/* 简易 WYSIWYG 编辑器 */
.wyg{border:1px solid var(--line);border-radius:9px;overflow:hidden;background:#fff;}
.wyg-bar{display:flex;flex-wrap:wrap;align-items:center;gap:2px;padding:6px 8px;background:var(--bg-soft);border-bottom:1px solid var(--line);}
.wyg-bar button{border:none;background:transparent;min-width:32px;height:32px;padding:0 6px;border-radius:6px;cursor:pointer;color:#33424a;font-size:13px;font-weight:700;display:inline-flex;align-items:center;justify-content:center;}
.wyg-bar button:hover{background:#fff;color:var(--green);box-shadow:var(--shadow);}
.wyg-bar button.active{background:var(--green);color:#fff;}
.wyg-bar .sep{width:1px;height:22px;background:var(--line);margin:0 4px;}
.wyg-area{min-height:260px;padding:14px 16px;outline:none;font-size:15px;line-height:1.8;color:var(--ink);}
.wyg-area:focus{box-shadow:inset 0 0 0 2px var(--green-l);}
.wyg-src{width:100%;min-height:260px;border:none;padding:14px 16px;font-family:ui-monospace,Consolas,monospace;font-size:13px;line-height:1.6;resize:vertical;color:var(--ink);}
.wyg-imgdlg{position:absolute;inset:0;background:rgba(15,42,32,.35);display:flex;align-items:center;justify-content:center;z-index:20;}
.wyg{position:relative;}
.wyg-imgdlg-box{background:#fff;border-radius:12px;padding:20px;width:420px;max-width:92%;box-shadow:var(--shadow);}
.wyg-imgdlg-row{display:flex;flex-direction:column;gap:8px;margin-bottom:14px;}
.wyg-imgdlg-row strong{font-size:14px;color:var(--green-d);}
.wyg-imgdlg-row input[type=file],.wyg-imgdlg-row input[type=url]{padding:9px 11px;border:1px solid var(--line);border-radius:9px;font:inherit;}
.wyg-imgdlg-msg{color:#b4232a;font-size:13px;min-height:18px;margin-bottom:0;}
.wyg-imgdlg-actions{text-align:right;}
.admin-content{padding:26px 24px;flex:1;}

/* 后台表格 */
.atable{width:100%;border-collapse:collapse;background:#fff;border:1px solid var(--line);border-radius:12px;overflow:hidden;}
.atable th,.atable td{padding:12px 14px;text-align:left;border-bottom:1px solid var(--line);font-size:14px;vertical-align:middle;}
.atable th{background:var(--bg-soft);color:var(--green-d);font-size:13px;}
.atable tr:last-child td{border-bottom:none;}
.atable .row-actions a{margin-right:8px;color:var(--green);font-weight:600;}
.atable .row-actions a.del{color:#b4232a;}
.atable img{width:64px;height:48px;object-fit:cover;border-radius:6px;}

/* 后台卡片/统计 */
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-bottom:26px;}
.stat{background:#fff;border:1px solid var(--line);border-radius:12px;padding:20px;}
.stat .num{font-size:30px;font-weight:800;color:var(--green-d);}
.stat .lbl{color:var(--muted);font-size:13px;margin-top:4px;}

.panel{background:#fff;border:1px solid var(--line);border-radius:12px;padding:20px;margin-bottom:22px;}
.panel h3{margin:0 0 14px;font-size:16px;}

.admin-form{display:grid;gap:16px;max-width:760px;}
.admin-form .field label{font-weight:600;font-size:14px;display:block;margin-bottom:6px;}
.admin-form .field input,.admin-form .field textarea,.admin-form .field select{
  width:100%;padding:10px 12px;border:1px solid var(--line);border-radius:9px;font:inherit;background:#fff;color:var(--ink);}
.admin-form .field textarea{min-height:140px;resize:vertical;}
.admin-form .field input:focus,.admin-form .field textarea:focus{border-color:var(--green);outline:none;box-shadow:0 0 0 3px var(--green-l);}
.admin-form .row2{display:grid;grid-template-columns:1fr 1fr;gap:16px;}
.current-cover{margin-top:8px;}
.current-cover img{width:120px;height:90px;object-fit:cover;border-radius:8px;border:1px solid var(--line);}

.btn-sm{padding:7px 14px;font-size:13px;border-radius:8px;}
.btn-dark{background:var(--ink);color:#fff;}
.btn-dark:hover{background:#22323a;}
.link-back{display:inline-block;margin-bottom:16px;color:var(--green);font-weight:600;}

/* 登录页 */
.login-wrap{min-height:100vh;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(120deg,var(--green-d),var(--green));}
.login-card{background:#fff;border-radius:18px;padding:38px 34px;width:360px;box-shadow:var(--shadow);}
.login-card .brand{display:flex;align-items:center;gap:12px;margin-bottom:22px;}
.login-card h2{margin:0;font-size:20px;}
.login-card .sub{color:var(--muted);font-size:13px;margin-top:4px;}
.login-card .field{margin-bottom:16px;}
.login-card .field label{display:block;font-weight:600;font-size:14px;margin-bottom:6px;}
.login-card .field input{width:100%;padding:11px 13px;border:1px solid var(--line);border-radius:9px;font:inherit;}
.login-card .field input:focus{border-color:var(--green);outline:none;box-shadow:0 0 0 3px var(--green-l);}
.login-card .btn{width:100%;justify-content:center;margin-top:6px;}

@media (max-width:860px){
  .admin-shell{grid-template-columns:1fr;}
  .admin-side{display:none;}
  .admin-main{margin-left:0;}
  .stat-grid{grid-template-columns:repeat(2,1fr);}
}