/* ============ 兴越环保官网 · 多页版扩展样式（site.css） ============
   依赖 style.css 中的基础变量与通用组件，仅做增量定义。
   ------------------------------------------------------------ */

/* ---------- 顶部栏补充 ---------- */
.topbar-icp{font-size:12px;color:#9fbcdf;white-space:nowrap}
.topbar-icp a:hover{color:#fff}

/* ---------- 导航：多级下拉（子母栏目） ---------- */
.nav-menu{display:flex;align-items:center;gap:2px}
.nav-item{position:relative}
.nav-link{display:flex;align-items:center;gap:5px;padding:10px 13px;border-radius:8px;font-size:14.5px;
  font-weight:600;color:#33475c;transition:.22s;white-space:nowrap;cursor:pointer}
.nav-link:hover{color:var(--blue);background:#eaf1fb}
.nav-item.current>.nav-link,
.nav-link.active{color:#fff;background:linear-gradient(90deg,var(--blue),#2e86e0)}
.caret{width:6px;height:6px;border-right:2px solid currentColor;border-bottom:2px solid currentColor;
  transform:rotate(45deg) translateY(-1px);transition:.25s;opacity:.75}
.nav-item.has-sub:hover>.nav-link .caret{transform:rotate(225deg) translateY(-1px)}

.submenu{position:absolute;top:calc(100% + 8px);left:0;min-width:196px;background:#fff;border-radius:12px;
  box-shadow:0 18px 44px rgba(13,63,143,.16);border:1px solid var(--line);padding:8px;
  opacity:0;visibility:hidden;transform:translateY(8px);transition:.22s;z-index:120}
.nav-item.has-sub:hover>.submenu,
.nav-item.has-sub:focus-within>.submenu{opacity:1;visibility:visible;transform:translateY(0)}
/* 悬停桥：填补下拉与父项之间的空隙，避免鼠标移动时菜单闪退 */
.nav-item.has-sub::after{content:"";position:absolute;left:0;top:100%;width:100%;height:12px}
.submenu-item.has-sub::before{content:"";position:absolute;right:-10px;top:0;bottom:0;width:10px}
.submenu a{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:9px 12px;
  border-radius:8px;font-size:14px;color:#33475c;font-weight:500;transition:.18s;white-space:nowrap}
.submenu a:hover{background:#eef5fd;color:var(--blue)}
.submenu a.current{background:#eaf1fb;color:var(--blue-deep);font-weight:700}
.submenu-item{position:relative}
.submenu-item>.caret-right{width:6px;height:6px;border-right:2px solid #9fb2c7;border-bottom:2px solid #9fb2c7;
  transform:rotate(-45deg);flex:0 0 auto}
.submenu .submenu{top:-8px;left:calc(100% + 6px);min-width:200px}
.submenu-item:hover>.submenu,
.submenu-item:focus-within>.submenu{opacity:1;visibility:visible;transform:translateY(0)}
.submenu .submenu{transform:translateX(8px)}
.submenu-item:hover>.submenu{transform:translateX(0)}

.nav-toggle{display:none;flex-direction:column;gap:5px;background:none;border:0;cursor:pointer;padding:8px}
.nav-toggle span{width:24px;height:3px;background:var(--blue);border-radius:2px;transition:.3s}
.nav-toggle.open span:nth-child(1){transform:translateY(8px) rotate(45deg)}
.nav-toggle.open span:nth-child(2){opacity:0}
.nav-toggle.open span:nth-child(3){transform:translateY(-8px) rotate(-45deg)}

/* ---------- 内页页头 ---------- */
.page-hero{position:relative;color:#fff;padding:66px 0 58px;overflow:hidden;
  background:linear-gradient(112deg,var(--blue-dark) 0%,var(--blue-deep) 46%,#1b6fc4 78%,#2c8a6a 130%)}
.page-hero::before{content:"";position:absolute;inset:0;opacity:.16;
  background:url("../img/hero-tech.jpg") center/cover no-repeat}
.page-hero::after{content:"";position:absolute;right:-90px;top:-90px;width:340px;height:340px;border-radius:50%;
  background:radial-gradient(circle,rgba(122,182,72,.42),transparent 68%)}
.page-hero .container{position:relative;z-index:2}
.ph-tag{display:inline-block;font-size:11.5px;letter-spacing:4px;color:#c7e6a9;font-weight:700;
  border:1px solid rgba(199,230,169,.55);border-radius:999px;padding:3px 15px;margin-bottom:14px}
.page-hero h1{font-size:clamp(25px,3.4vw,38px);letter-spacing:3px;line-height:1.3;margin-bottom:12px;
  text-shadow:0 4px 20px rgba(0,0,0,.28)}
.page-hero p{max-width:860px;color:#d8e8f8;font-size:15.5px;line-height:1.8}

/* ---------- 面包屑 ---------- */
.breadcrumb{background:#f2f7fc;border-bottom:1px solid var(--line);font-size:13px;color:var(--gray)}
.breadcrumb .container{display:flex;align-items:center;gap:8px;flex-wrap:wrap;padding:12px 0}
.breadcrumb a{color:#4a6076}
.breadcrumb a:hover{color:var(--blue)}
.breadcrumb .sep{color:#b9c9d9}
.breadcrumb .here{color:var(--blue-deep);font-weight:700}

/* ---------- 内页主体布局（侧栏 + 正文） ---------- */
.page-body{padding:52px 0 72px;background:#fff}
.page-layout{display:grid;grid-template-columns:268px 1fr;gap:44px;align-items:start}
.page-layout.no-side{grid-template-columns:1fr}

/* 侧栏子导航 */
.side-nav{position:sticky;top:92px;background:#fff;border:1px solid var(--line);border-radius:16px;
  box-shadow:0 10px 30px rgba(13,63,143,.07);overflow:hidden}
.side-nav .sn-head{background:linear-gradient(112deg,var(--blue-dark),var(--blue));color:#fff;padding:18px 20px}
.side-nav .sn-head strong{display:block;font-size:17px;letter-spacing:2px}
.side-nav .sn-head em{font-style:normal;font-size:11px;letter-spacing:1.4px;color:#b9d7f2}
.side-nav ul{list-style:none;padding:10px}
.side-nav li a{display:block;padding:10px 14px;border-radius:9px;font-size:14px;color:#3d5166;transition:.2s}
.side-nav li a:hover{background:#eef5fd;color:var(--blue)}
.side-nav li a.current{background:linear-gradient(90deg,#e8f2fd,#f4f9ff);color:var(--blue-deep);
  font-weight:700;box-shadow:inset 3px 0 0 var(--green)}
.side-nav li a.sub{padding-left:28px;font-size:13.5px;color:#5a6d80}
.side-nav .sn-group{padding:12px 14px 4px;font-size:11.5px;letter-spacing:2px;color:#9aabbb;font-weight:700}
.side-nav .sn-cta{padding:14px;border-top:1px solid var(--line);background:#fafcfe}
.side-nav .sn-cta p{font-size:12.5px;color:var(--gray);margin-bottom:10px;line-height:1.6}
.side-nav .sn-cta .btn{width:100%;text-align:center;padding:10px 12px;font-size:14px}
.side-nav .sn-tel{display:block;text-align:center;margin-top:8px;font-size:15px;font-weight:800;color:var(--blue-deep)}

/* 正文容器 */
.page-main{min-width:0}
.page-main>.block:first-child{margin-top:0}

/* ---------- 正文内容组件 ---------- */
.block{background:#fff;border:1px solid var(--line);border-radius:16px;padding:30px 32px;margin-bottom:26px;
  box-shadow:0 8px 22px rgba(13,63,143,.05)}
.block.plain{background:transparent;border:0;box-shadow:none;padding:0}
.block-title{display:flex;align-items:center;gap:12px;font-size:21px;color:var(--blue-dark);
  letter-spacing:1px;margin-bottom:18px}
.block-title::before{content:"";width:5px;height:22px;border-radius:3px;
  background:linear-gradient(180deg,var(--blue),var(--green));flex:0 0 auto}
.block-title small{font-size:11px;letter-spacing:3px;color:#9aacbe;font-weight:400}

.lead{font-size:16px;color:#33475c;line-height:1.95;margin-bottom:16px}
.page-main p{color:#3f5063;line-height:1.95;margin-bottom:13px}
.page-main p:last-child{margin-bottom:0}
.page-main b,.page-main strong{color:var(--blue-deep)}
.page-main em{font-style:normal;color:var(--green-deep);font-weight:700}

.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.grid-2.align-start,.grid-3.align-start{align-items:start}

/* 特性卡 */
.feature{background:#f7fafe;border:1px solid var(--line);border-radius:14px;padding:22px 20px;transition:.28s}
.feature:hover{transform:translateY(-5px);box-shadow:0 14px 32px rgba(13,63,143,.11);border-color:#cfe0f5}
.feature .f-no{font-size:13px;font-weight:800;color:var(--green);letter-spacing:1px}
.feature h3{font-size:16.5px;color:var(--blue-dark);margin:6px 0 8px;letter-spacing:.5px}
.feature p{font-size:13.8px;color:#54677a;line-height:1.8;margin:0}
.feature .f-icon{font-size:24px;line-height:1;margin-bottom:8px}

/* 数值指标 */
.metric-row{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin:22px 0}
.metric{background:linear-gradient(150deg,#1d6fd0,#0d3f8f);border-radius:14px;color:#fff;padding:20px 16px;text-align:center}
.metric.alt{background:linear-gradient(150deg,#83bd52,#4e8027)}
.metric .m-num{font-size:26px;font-weight:800;font-family:"DIN Alternate",Arial,sans-serif;line-height:1.2}
.metric .m-num i{font-style:normal;font-size:.5em;margin-left:2px;color:#d6efbe}
.metric .m-label{font-size:12.5px;color:#c9dcf2;margin-top:4px;letter-spacing:.5px}

/* 规格键值表 */
.kv-list{display:grid;gap:1px;background:var(--line);border:1px solid var(--line);border-radius:12px;overflow:hidden}
.kv-row{display:grid;grid-template-columns:180px 1fr;background:#fff;font-size:14px}
.kv-row:nth-child(even){background:#f8fbfe}
.kv-k{padding:12px 16px;color:#5b6e80;font-weight:600;background:#f4f8fc}
.kv-v{padding:12px 16px;color:#2f4256}
.kv-v b{color:var(--blue-deep)}

/* 数据表格 */
.table-wrap{overflow-x:auto;border-radius:12px;border:1px solid var(--line);margin:18px 0}
table.data-table{width:100%;border-collapse:collapse;font-size:14px;background:#fff;min-width:520px}
table.data-table th{background:linear-gradient(90deg,var(--blue-dark),var(--blue));color:#fff;
  padding:12px 16px;text-align:left;letter-spacing:1px;font-weight:600;white-space:nowrap}
table.data-table td{padding:11px 16px;border-bottom:1px solid var(--line);color:#3f5063}
table.data-table tr:nth-child(even) td{background:#f8fbfe}
table.data-table tr:last-child td{border-bottom:0}
table.data-table td:first-child{font-weight:600;color:#2f4256}

/* 编号步骤 */
.num-list{list-style:none;counter-reset:nl;display:grid;gap:12px;margin:16px 0}
.num-list li{counter-increment:nl;position:relative;padding:14px 16px 14px 56px;background:#f8fbfe;
  border:1px solid var(--line);border-radius:12px;font-size:14.2px;color:#3f5063;line-height:1.85}
.num-list li::before{content:counter(nl,decimal-leading-zero);position:absolute;left:16px;top:13px;
  font-size:19px;font-weight:800;color:var(--green);font-family:Arial,sans-serif}
.num-list li b{color:var(--blue-deep)}

/* 要点列表 */
.bullet-list{list-style:none;display:grid;gap:10px;margin:14px 0}
.bullet-list li{position:relative;padding-left:26px;font-size:14.2px;color:#3f5063;line-height:1.85}
.bullet-list li::before{content:"✔";position:absolute;left:0;top:0;color:var(--green);font-weight:800}
.bullet-list li b{color:var(--blue-deep)}

/* 提示框 */
.callout{border-radius:0 14px 14px 0;padding:16px 18px;font-size:14px;line-height:1.85;margin:18px 0;
  background:#f2f8ec;border-left:4px solid var(--green);color:#3f5527}
.callout.blue{background:#eef5fd;border-left-color:var(--blue);color:#2c4a6b}
.callout b{color:inherit;font-weight:800}
.callout .co-title{display:block;font-weight:800;margin-bottom:4px;letter-spacing:.5px}

/* 化学式 */
.formula{display:block;font-family:Consolas,"Courier New",monospace;font-size:13px;color:#4e6b2f;background:#f2f8ec;
  border-radius:8px;padding:9px 13px;margin:8px 0;overflow-x:auto;white-space:nowrap}
.formula.blue{background:#eef5fd;color:#2b4c72}
.num-list li .formula{margin:6px 0;font-size:12.5px}

/* 图片 */
.figure{margin:18px 0;background:#f7fafe;border:1px solid var(--line);border-radius:14px;padding:12px}
.figure img{width:100%;height:auto;border-radius:10px;display:block}
.figure a{display:block;line-height:0;cursor:zoom-in}
.figure a:hover img{opacity:.94}
.figure figcaption{font-size:12.5px;color:var(--gray);text-align:center;padding-top:9px;line-height:1.6}
.figure-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.figure-grid.cols-3{grid-template-columns:repeat(3,1fr)}

/* 标签 */
.tag-list{list-style:none;display:flex;flex-wrap:wrap;gap:8px;margin:14px 0 0}
.tag-list li{font-size:12.5px;color:var(--blue);background:#eaf1fb;border:1px solid #cfe0f5;
  border-radius:999px;padding:4px 13px}

/* 引用/结论 */
.quote{margin:20px 0;padding:18px 20px;background:linear-gradient(120deg,#f2f8ec,#f8fbf4);
  border-left:4px solid var(--green);border-radius:0 14px 14px 0;color:#3f5527;font-size:14.5px;line-height:1.9}
.quote b{color:#33501f}

/* 按钮补充 */
.btn-outline{border:1.5px solid var(--blue);color:var(--blue);background:#fff}
.btn-outline:hover{background:#eef5fd;transform:translateY(-2px)}
.btn-dark{background:linear-gradient(90deg,var(--blue-dark),var(--blue));color:#fff;
  box-shadow:0 8px 22px rgba(13,63,143,.28)}
.btn-dark:hover{transform:translateY(-2px);box-shadow:0 12px 28px rgba(13,63,143,.36)}
.btn-sm{padding:9px 20px;font-size:13.5px}

/* ---------- 首页补充块 ---------- */
.home-biz{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.hb-card{background:#fff;border-radius:16px;box-shadow:var(--shadow);overflow:hidden;transition:.32s;
  display:flex;flex-direction:column;border:1px solid var(--line)}
.hb-card:hover{transform:translateY(-8px);box-shadow:0 20px 46px rgba(13,63,143,.16)}
.hb-top{position:relative;background:#f2f7fc;padding:18px;min-height:190px;display:flex;align-items:center;justify-content:center}
.hb-top img{max-height:178px;width:auto;object-fit:contain;transition:.4s}
.hb-card:hover .hb-top img{transform:scale(1.05)}
.hb-no{position:absolute;left:16px;top:12px;font-size:12px;font-weight:800;letter-spacing:2px;color:var(--green-deep)}
.hb-body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1}
.hb-body h3{font-size:18px;color:var(--blue-dark);margin-bottom:9px;letter-spacing:1px}
.hb-body p{font-size:13.8px;color:#4a5a6b;line-height:1.8;margin-bottom:14px}
.hb-links{margin-top:auto;display:flex;flex-wrap:wrap;gap:8px}
.hb-links a{font-size:12.5px;color:var(--blue);background:#eef5fd;border-radius:999px;padding:5px 13px;transition:.2s}
.hb-links a:hover{background:var(--blue);color:#fff}
.hb-more{margin-top:14px;font-size:13.5px;font-weight:700;color:var(--green-deep);display:inline-flex;gap:6px}
.hb-more::after{content:"→";transition:.2s}
.hb-card:hover .hb-more::after{transform:translateX(4px)}

/* 内页快速入口 */
.quick-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:26px}
.quick-item{display:flex;flex-direction:column;gap:6px;background:#fff;border:1px solid var(--line);
  border-radius:14px;padding:20px 18px;transition:.28s}
.quick-item:hover{transform:translateY(-4px);border-color:#cfe0f5;box-shadow:0 12px 28px rgba(13,63,143,.1)}
.quick-item strong{font-size:15.5px;color:var(--blue-dark);letter-spacing:.5px}
.quick-item span{font-size:12.5px;color:var(--gray);line-height:1.7}

/* ---------- 底部 CTA ---------- */
.cta-band{background:linear-gradient(112deg,var(--blue-dark),var(--blue) 62%,#1a7a5c);
  border-radius:18px;color:#fff;padding:34px 38px;display:flex;align-items:center;justify-content:space-between;
  gap:24px;flex-wrap:wrap;margin:34px 0 0}
.cta-band h3{font-size:21px;letter-spacing:2px;margin-bottom:6px}
.cta-band p{color:#cfe1f2;font-size:14px;margin:0}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}

/* ---------- 资料下载 ---------- */
.dl-list{display:grid;gap:14px}
.dl-item{display:grid;grid-template-columns:54px 1fr auto;gap:18px;align-items:center;background:#fff;
  border:1px solid var(--line);border-radius:14px;padding:18px 20px;transition:.26s}
.dl-item:hover{border-color:#cfe0f5;box-shadow:0 12px 28px rgba(13,63,143,.1);transform:translateY(-3px)}
.dl-icon{width:54px;height:54px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  background:#eef5fd;color:var(--blue);font-size:11px;font-weight:800;letter-spacing:.5px;flex-direction:column;line-height:1.2}
.dl-icon.pdf{background:#fdeeee;color:#c0392b}
.dl-icon.doc{background:#eef5fd;color:#1660c4}
.dl-name{font-size:15.5px;font-weight:700;color:var(--blue-dark);margin-bottom:4px}
.dl-meta{font-size:12.5px;color:var(--gray);display:flex;gap:14px;flex-wrap:wrap}
.dl-desc{font-size:12.8px;color:#5d6b7a;margin-top:5px;line-height:1.7}
.dl-act .btn{white-space:nowrap}

/* ---------- 表单 ---------- */
.form-card{background:#fff;border:1px solid var(--line);border-radius:18px;padding:32px;
  box-shadow:0 12px 34px rgba(13,63,143,.08)}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px 20px}
.field{display:flex;flex-direction:column;gap:7px}
.field.full{grid-column:1 / -1}
.field label{font-size:13.5px;font-weight:700;color:#33475c;letter-spacing:.5px}
.field label .req{color:#d9534f;margin-left:3px}
.field input,.field select,.field textarea{width:100%;padding:11px 14px;border:1px solid #d7e2ee;border-radius:10px;
  font-size:14px;font-family:inherit;color:#22303f;background:#fbfdff;transition:.2s;outline:none}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--blue);
  box-shadow:0 0 0 3px rgba(22,96,196,.12);background:#fff}
.field textarea{min-height:118px;resize:vertical;line-height:1.8}
.field .hint{font-size:12px;color:#8a9aab}
.field .err{font-size:12px;color:#d9534f;display:none}
.field.invalid input,.field.invalid select,.field.invalid textarea{border-color:#e08e8b;background:#fffafa}
.field.invalid .err{display:block}
.check-row{display:flex;align-items:flex-start;gap:9px;font-size:13px;color:#5d6b7a;line-height:1.7}
.check-row input{width:16px;height:16px;margin-top:3px;flex:0 0 auto}
.check-row a{color:var(--blue);text-decoration:underline}
.form-actions{display:flex;align-items:center;gap:16px;flex-wrap:wrap;margin-top:24px}
.form-actions .btn{border:0;cursor:pointer;font-family:inherit}
.form-status{margin-top:16px;padding:14px 16px;border-radius:12px;font-size:14px;display:none;line-height:1.8}
.form-status.ok{display:block;background:#eef7e8;border:1px solid #cfe6bb;color:#3f5527}
.form-status.err{display:block;background:#fdeeee;border:1px solid #f0c9c6;color:#8c2f28}
.form-status b{font-weight:800}
.btn[disabled]{opacity:.65;cursor:not-allowed;transform:none}
.spin{display:inline-block;width:14px;height:14px;border:2px solid rgba(255,255,255,.5);
  border-top-color:#fff;border-radius:50%;animation:spin .7s linear infinite;vertical-align:-2px;margin-right:7px}
@keyframes spin{to{transform:rotate(360deg)}}

/* ---------- 咨询左侧信息 ---------- */
.info-list{display:grid;gap:14px}
.info-item{display:flex;gap:14px;align-items:flex-start;padding:16px 18px;background:#f7fafe;
  border:1px solid var(--line);border-radius:12px}
.info-item .ii-icon{width:38px;height:38px;border-radius:10px;background:#eaf1fb;color:var(--blue);
  display:flex;align-items:center;justify-content:center;font-size:18px;flex:0 0 auto}
.info-item b{display:block;font-size:14px;color:var(--blue-dark);margin-bottom:3px}
.info-item span{font-size:13.2px;color:#54677a;line-height:1.75}
.info-item a{color:var(--blue);font-weight:700}

/* ---------- 分页器 ---------- */
.pager{display:flex;gap:14px;justify-content:space-between;margin-top:34px;border-top:1px solid var(--line);padding-top:22px}
.pager a{display:flex;flex-direction:column;gap:3px;max-width:47%;padding:12px 16px;border:1px solid var(--line);
  border-radius:12px;transition:.24s;background:#fff}
.pager a:hover{border-color:#cfe0f5;box-shadow:0 10px 24px rgba(13,63,143,.1);transform:translateY(-3px)}
.pager a span{font-size:11.5px;letter-spacing:2px;color:#9aabbb;font-weight:700}
.pager a strong{font-size:14.5px;color:var(--blue-dark)}
.pager .next{margin-left:auto;text-align:right;align-items:flex-end}

/* ---------- 联系页 ---------- */
.contact-grid-2{display:grid;grid-template-columns:1.05fr .95fr;gap:26px;align-items:start}
.map-box{border-radius:16px;overflow:hidden;border:1px solid var(--line);background:#f7fafe;
  padding:26px;text-align:center;box-shadow:0 8px 22px rgba(13,63,143,.05)}
.map-box .map-pin{font-size:34px}
.map-box h3{color:var(--blue-dark);margin:8px 0 6px;letter-spacing:1px}
.map-box p{font-size:13.5px;color:var(--gray);line-height:1.8}

/* ---------- 页脚补充 ---------- */
.footer-icp{font-size:12px;color:#7f9ab8;display:flex;gap:16px;flex-wrap:wrap;justify-content:center;align-items:center}
.footer-icp a{color:#9db6d4}
.footer-icp a:hover{color:#9ad26a}
.footer-cols{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:36px;text-align:left;width:100%;
  padding-bottom:24px;border-bottom:1px solid rgba(255,255,255,.09)}
.footer-col h4{color:#fff;font-size:14px;letter-spacing:2px;margin-bottom:12px}
.footer-col ul{list-style:none;display:grid;gap:8px;font-size:13px}
.footer-col ul a:hover{color:#9ad26a}
.footer-col p{font-size:13px;color:#8fa8c7;line-height:1.9}
.footer-col .f-tel{color:#9ad26a;font-weight:700;font-size:15px}

/* ---------- 回到顶部 ---------- */
.to-top{position:fixed;right:22px;bottom:26px;width:44px;height:44px;border-radius:50%;border:0;
  background:linear-gradient(150deg,var(--blue),var(--blue-deep));color:#fff;font-size:17px;cursor:pointer;
  box-shadow:0 10px 26px rgba(13,63,143,.32);opacity:0;visibility:hidden;transition:.3s;z-index:90}
.to-top.show{opacity:1;visibility:visible}
.to-top:hover{transform:translateY(-4px)}

/* ---------- 打印 ---------- */
@media print{
  .nav,.topbar,.page-hero,.breadcrumb,.side-nav,.pager,.cta-band,.footer,.to-top{display:none!important}
  .page-body{padding:0}
  .page-layout{grid-template-columns:1fr}
  .block{box-shadow:none;break-inside:avoid}
}

/* ---------- 响应式 ---------- */
@media(max-width:1180px){
  .nav-link{padding:10px 9px;font-size:13.5px}
  .page-layout{grid-template-columns:236px 1fr;gap:30px}
}
@media(max-width:1024px){
  .page-layout{grid-template-columns:1fr}
  .side-nav{position:static;order:2;margin-top:8px}
  .home-biz,.quick-grid{grid-template-columns:1fr 1fr}
  .grid-3,.grid-4{grid-template-columns:1fr 1fr}
  .metric-row{grid-template-columns:1fr 1fr}
  .footer-cols{grid-template-columns:1fr 1fr}
  .contact-grid-2{grid-template-columns:1fr}
}
@media(max-width:900px){
  .nav-toggle{display:flex}
  .nav-menu{position:absolute;top:100%;left:0;right:0;background:#fff;flex-direction:column;align-items:stretch;
    gap:0;padding:10px 5% 18px;box-shadow:0 18px 34px rgba(13,63,143,.16);border-top:1px solid var(--line);
    display:none;max-height:calc(100vh - 90px);overflow-y:auto}
  .nav-menu.open{display:flex}
  .nav-item{width:100%}
  .nav-link{justify-content:space-between;padding:13px 12px;border-radius:9px;font-size:15px}
  .nav-item.current>.nav-link{background:#eaf1fb;color:var(--blue)}
  .nav-item.has-sub>.nav-link .caret{transform:rotate(45deg)}
  .nav-item.has-sub.open>.nav-link .caret{transform:rotate(225deg)}
  .submenu{position:static;opacity:1;visibility:visible;transform:none;box-shadow:none;border:0;
    border-left:2px solid var(--line);border-radius:0;padding:2px 0 2px 10px;margin:2px 0 4px 14px;
    display:none;min-width:0}
  .nav-item.open>.submenu{display:block}
  .submenu .submenu{position:static;display:none;box-shadow:none;border:0;margin:2px 0 2px 12px;padding-left:8px}
  .submenu-item.open>.submenu{display:block}
  .submenu a{padding:10px 12px;white-space:normal}
  .submenu-item>.caret-right{display:none}
  .submenu-item>.has-child-toggle{display:flex}
}
@media(max-width:768px){
  .page-hero{padding:46px 0 40px}
  .page-body{padding:34px 0 52px}
  .block{padding:22px 20px;border-radius:14px}
  .grid-2,.grid-3,.grid-4,.metric-row,.figure-grid,.figure-grid.cols-3,.home-biz,.quick-grid{grid-template-columns:1fr}
  .kv-row{grid-template-columns:120px 1fr}
  .form-grid{grid-template-columns:1fr}
  .form-card{padding:22px 18px}
  .dl-item{grid-template-columns:44px 1fr;gap:12px}
  .dl-act{grid-column:1 / -1;padding-top:4px}
  .dl-act .btn{width:100%;text-align:center}
  .cta-band{padding:26px 22px}
  .pager{flex-direction:column}
  .pager a{max-width:100%}
  .pager .next{text-align:left;align-items:flex-start}
  .footer-cols{grid-template-columns:1fr;gap:22px;text-align:center}
  .footer-col ul{justify-items:center}
  .to-top{right:14px;bottom:16px}
}

/* ---------- 滚动显现（无 JS 时内容保持可见） ---------- */
.no-js .reveal{opacity:1 !important;transform:none !important}

/* ---------- 区块动作按钮 ---------- */
.section-actions{text-align:center;margin-top:34px}
.section-actions.left{text-align:left;margin-top:20px}
.honor-text .section-actions,.about-text .section-actions{margin-top:16px}

/* ---------- 首页四列业务卡 ---------- */
.home-biz.cols-4{grid-template-columns:repeat(4,1fr);gap:20px}
.home-biz.cols-4 .hb-top{min-height:164px;padding:14px}
.home-biz.cols-4 .hb-top img{max-height:150px}
.home-biz.cols-4 .hb-body{padding:18px 18px 20px}
.home-biz.cols-4 .hb-body h3{font-size:17px}
.home-biz.cols-4 .hb-body p{font-size:13.2px;line-height:1.75}
@media(max-width:1024px){
  .home-biz.cols-4{grid-template-columns:1fr 1fr}
}
@media(max-width:768px){
  .home-biz.cols-4{grid-template-columns:1fr}
}

.sibling-tabs{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:22px}
.sibling-tabs a{font-size:13px;padding:7px 16px;border-radius:999px;background:#f2f7fc;color:#4a6076;
  border:1px solid var(--line);transition:.2s}
.sibling-tabs a:hover{background:#eaf1fb;color:var(--blue)}
.sibling-tabs a.current{background:linear-gradient(90deg,var(--blue),#2e86e0);color:#fff;border-color:transparent;font-weight:700}

/* ---------- 多级导航行与展开按钮 ---------- */
.nav-row{display:flex;align-items:center;gap:2px}
.sub-toggle{display:none;background:none;border:0;cursor:pointer;padding:6px 9px;color:#9fb2c7;
  border-radius:6px;line-height:1}
.sub-toggle:hover{background:#eef5fd;color:var(--blue)}
.sub-toggle .caret{display:block;width:7px;height:7px;border-right:2px solid currentColor;
  border-bottom:2px solid currentColor;transform:rotate(45deg);margin:2px auto}
.submenu-item .nav-row{width:100%}
.submenu-item .nav-row>a{flex:1}
.side-nav li a.sub2{padding-left:42px;font-size:13px}

@media(max-width:900px){
  .sub-toggle{display:block}
  .nav-row{justify-content:space-between;width:100%}
  .submenu-item>.nav-row>a{padding:10px 12px}
  .nav-item.open>.nav-link,.submenu-item.open>a{color:var(--blue-deep)}
}