/* ============================================================
   common.css - 重庆工商大学人工智能学院全站公共样式
   配色：
   Header 主色：#564CBC / #584EBD（间插渐变，深色底）
   主导航：#372E8A（纯色）
   Footer 基调：#4E4587 / #40357D（含渐变 + 装饰图案 + 半透明）
   Main 内容区：#36318E / #383390
   栏目标题：金紫渐变文字 + 浅紫阴影
   ============================================================ */

/* ---------- 变量 ---------- */
:root{
  --szu-header-1:#564CBC;
  --szu-header-2:#584EBD;
  --szu-header-3:#4A42A8;
  --szu-header-deep:#454090;
  --szu-nav:#372E8A;

  --szu-footer-1:#4E4587;
  --szu-footer-2:#40357D;
  --szu-footer-3:#352C6B;

  --szu-main-1:#36318E;
  --szu-main-2:#383390;
  --szu-main-light:#EDEBF8;
  --szu-main-pale:#F5F4FB;

  --szu-gold:#CCA84D;
  --szu-gold-light:#E5D28E;
  --szu-gold-pale:#FBF6E8;
  --szu-shadow-purple:#7973BB;

  --szu-gray-bg:#F5F5F8;
  --szu-gray-border:#E8E8EE;
  --szu-text-dark:#1A1A2E;
  --szu-text-body:#4A4A5E;
  --szu-text-muted:#8888A0;
  --szu-red-accent:#B22222;

  --ctbu-blue:var(--szu-main-1);
  --ctbu-blue-dark:var(--szu-main-2);
  --ctbu-blue-deep:var(--szu-footer-1);
  --ctbu-blue-light:var(--szu-main-light);
  --ctbu-blue-accent:var(--szu-gold);
  --text-primary:var(--szu-text-dark);
  --text-secondary:var(--szu-text-body);
  --text-muted:var(--szu-text-muted);
  --border-color:var(--szu-gray-border);
  --red-accent:var(--szu-red-accent);
}

/* ---------- Reset ---------- */
*{margin:0;padding:0;box-sizing:border-box;}
html{overflow-x:clip;scroll-behavior:smooth;}
body{font-family:"Microsoft YaHei","PingFang SC","Hiragino Sans GB",Arial,sans-serif;font-size:16px;line-height:1.78;color:var(--szu-text-dark);background:#fff;-webkit-font-smoothing:antialiased;overflow-x:clip;}
ul,li,h1,h2,h3,h4,h5,h6,p{margin:0;padding:0;font-weight:normal;}
ul{list-style:none;}
a{text-decoration:none;color:inherit;transition:color .25s;outline:none;}
img{border:0;vertical-align:middle;max-width:100%;display:block;}
button{font-family:inherit;border:none;background:none;cursor:pointer;outline:none;}
.w15{width:100%;max-width:1300px;margin:0 auto;padding:0 20px;box-sizing:border-box;}

/* ============================================================
   Header 区域 - 间插渐变（#564CBC / #584EBD）深色底
   ============================================================ */

/* ---------- 顶部信息条 ---------- */
.pc_top_lj{
  background:linear-gradient(90deg,
    #564CBC 0%,
    #584EBD 16%,
    #564CBC 32%,
    #584EBD 50%,
    #564CBC 68%,
    #584EBD 84%,
    #564CBC 100%);
  color:rgba(255,255,255,.9);
  font-size:14.5px;line-height:42px;
  position:relative;
}
.pc_top_lj>div{display:flex;align-items:center;justify-content:space-between;gap:16px;height:0;}
.pc_top_lj .l p{font-size:14.5px;color:rgba(255,255,255,.9);}
.pc_top_lj .r{display:flex;align-items:center;gap:6px;}
.pc_top_lj .r a{color:rgba(255,255,255,.9);font-size:14.5px;padding:0 6px;}
.pc_top_lj .r a:hover{color:var(--szu-gold-light);}
.pc_top_lj .line{display:inline-block;width:1px;height:12px;background:rgba(255,255,255,.3);}

/* ---------- 头部 logo 区 ---------- */
.header-logo{
  background:
    radial-gradient(circle at 6% 88%, rgba(255,255,255,.10) 0%, rgba(255,255,255,.10) 3%, transparent 3.2%),
    radial-gradient(circle at 6% 88%, transparent 0%, transparent 7%, rgba(255,255,255,.07) 7.2%, rgba(255,255,255,.07) 7.6%, transparent 7.8%),
    radial-gradient(circle at 6% 88%, transparent 0%, transparent 11%, rgba(255,255,255,.05) 11.2%, rgba(255,255,255,.05) 11.6%, transparent 11.8%),
    radial-gradient(circle at 96% 12%, rgba(204,168,77,.28) 0%, rgba(204,168,77,.28) 2%, transparent 2.2%),
    radial-gradient(circle at 96% 12%, transparent 0%, transparent 5%, rgba(204,168,77,.16) 5.2%, rgba(204,168,77,.16) 5.6%, transparent 5.8%),
    radial-gradient(circle at 96% 12%, transparent 0%, transparent 8%, rgba(204,168,77,.10) 8.2%, rgba(204,168,77,.10) 8.6%, transparent 8.8%),
    radial-gradient(circle at 62% 50%, rgba(255,255,255,.06) 0%, transparent 42%),
    linear-gradient(90deg,
      #564CBC 0%,
      #584EBD 25%,
      #564CBC 50%,
      #584EBD 75%,
      #564CBC 100%);
  background-repeat:no-repeat;
  border-bottom:1px solid rgba(255,255,255,.10);
  position:relative;
  overflow:hidden;
}

.header-logo::before{
  content:"";position:absolute;
  right:0;top:0;bottom:0;
  width:min(420px,40%);
  background-image:
    radial-gradient(circle, rgba(255,255,255,.28) 1.4px, transparent 1.6px),
    radial-gradient(circle, rgba(255,255,255,.18) 1.2px, transparent 1.4px);
  background-size:18px 18px,18px 18px;
  background-position:0 0,9px 9px;
  -webkit-mask-image:linear-gradient(90deg,transparent 0%,#000 35%,#000 100%);
  mask-image:linear-gradient(90deg,transparent 0%,#000 35%,#000 100%);
  pointer-events:none;
  opacity:.9;
}

.header-logo::after{
  content:"";position:absolute;
  left:38%;top:-60%;bottom:-60%;
  width:220px;
  background:linear-gradient(105deg,
    transparent 0%,
    rgba(255,255,255,.08) 30%,
    rgba(204,168,77,.18) 50%,
    rgba(255,255,255,.08) 70%,
    transparent 100%);
  transform:rotate(8deg);
  filter:blur(2px);
  pointer-events:none;
  opacity:.95;
}

.header-logo-inner{
  display:flex;align-items:center;justify-content:space-between;gap:24px;
  min-height:96px;padding:12px 0;box-sizing:border-box;
  position:relative;
  z-index:2;
}
.header-brand{display:flex;align-items:center;gap:22px;min-width:0;flex:1;}
#logo{display:block;flex-shrink:0;width:clamp(280px,38vw,633px);max-width:100%;text-decoration:none;}
#logo img{display:block;width:100%;height:auto;max-height:80px;object-fit:contain;object-position:left center;}
.header-tools{display:flex;align-items:center;gap:16px;flex-shrink:0;}

.search_btn{
  display:flex;align-items:center;gap:7px;
  height:42px;padding:0 20px;border-radius:21px;
  background:rgba(255,255,255,.12);
  border:1px solid rgba(255,255,255,.32);
  color:#fff;
  font-size:15.5px;transition:.25s;flex-shrink:0;
  -webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);
}
.search_btn:hover{
  background:rgba(255,255,255,.22);
  border-color:rgba(255,255,255,.6);
  color:#fff;
  transform:translateY(-1px);
  box-shadow:0 6px 16px rgba(0,0,0,.18);
}
.search_btn svg{width:17px;height:17px;}

/* ---------- 主导航 ---------- */
.mainnav{
  background:#372E8A;
  position:relative;max-height:66px;
  transition:max-height .42s cubic-bezier(.4,0,.2,1),opacity .35s ease;
  overflow:visible;
  box-shadow:0 2px 12px rgba(55,46,138,.28);
}
.mainnav::after{
  content:"";position:absolute;left:0;right:0;bottom:0;
  height:2px;
  background:linear-gradient(90deg,
    rgba(204,168,77,0) 0%,
    rgba(204,168,77,.65) 50%,
    rgba(204,168,77,0) 100%);
  pointer-events:none;
  z-index:2;
}
.mainnav-inner{display:flex;align-items:center;gap:6px;height:66px;}
.nav-menu{flex:1;min-width:0;}
.nav-menu > ul{display:flex;width:100%;}
.nav-menu > ul > li{position:relative;flex:1 1 0;min-width:0;}
.nav-menu > ul > li > a{display:block;height:66px;line-height:66px;text-align:center;color:#fff;font-size:16.5px;letter-spacing:.3px;white-space:nowrap;padding:0 2px;position:relative;transition:background .25s;}
.nav-menu > ul > li > a h3{font-size:16.5px;display:inline-block;}
.nav-menu > ul > li:has(.sub) > a h3::after{
  content:"";display:inline-block;width:6px;height:6px;
  border-right:1.5px solid currentColor;border-bottom:1.5px solid currentColor;
  transform:rotate(45deg) translate(-1px,-1px);margin-left:7px;vertical-align:2px;
  transition:transform .3s ease;opacity:.85;
}
.nav-menu > ul > li:has(.sub):hover > a h3::after{transform:rotate(-135deg) translate(-1px,1px);opacity:1;}
.nav-menu > ul > li > a::after{content:"";position:absolute;left:50%;bottom:0;transform:translateX(-50%);width:0;height:3px;background:var(--szu-gold);transition:width .28s;}
.nav-menu > ul > li:hover > a{background:rgba(0,0,0,.14);}
.nav-menu > ul > li:hover > a::after{width:100%;}
.nav-menu > ul > li.on > a{background:rgba(0,0,0,.16);}
.nav-menu > ul > li.on > a::after{width:100%;}

.nav-menu .sub{
  position:absolute;top:100%;left:50%;
  transform:translate(-50%,10px);
  min-width:210px;
  background:linear-gradient(180deg,
    #3E3596 0%,
    #372E8A 35%,
    #3E3596 70%,
    #2D2672 100%);
  padding:10px 0;
  border-radius:0 0 6px 6px;
  box-shadow:0 12px 30px rgba(55,46,138,.40);
  opacity:0;visibility:hidden;transition:all .28s;z-index:100;
}
.nav-menu > ul > li:hover .sub{opacity:1;visibility:visible;transform:translate(-50%,0);}
.nav-menu .sub li a{display:block;padding:11px 24px;color:rgba(255,255,255,.86);font-size:15.5px;white-space:nowrap;}
.nav-menu .sub li a:hover{background:rgba(204,168,77,.22);color:var(--szu-gold-light);padding-left:30px;}
.nav-menu > ul > li:nth-last-child(-n+2) .sub{left:auto;right:0;transform:translate(0,10px);}
.nav-menu > ul > li:nth-last-child(-n+2):hover .sub{transform:translate(0,0);}
.nav-toggle{display:none;width:44px;height:44px;flex-direction:column;justify-content:center;gap:5px;padding:0 9px;margin-left:auto;flex-shrink:0;}
.nav-toggle span{display:block;height:2px;background:#fff;border-radius:2px;transition:.3s;}
.nav-toggle.active span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle.active span:nth-child(2){opacity:0;}
.nav-toggle.active span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

/* ---------- 页面头 ---------- */
.page-hero{
  position:relative;
  padding:clamp(48px,6vw,80px) 0 clamp(36px,4vw,54px);
  background:
    radial-gradient(circle at 80% 50%,rgba(204,168,77,.28) 0%,transparent 45%),
    radial-gradient(circle at 15% 80%,rgba(88,78,189,.30) 0%,transparent 40%),
    linear-gradient(120deg,#36318E 0%,#383390 50%,#564CBC 100%);
  color:#fff;
  overflow:hidden;
}
.page-hero::before{
  content:"";position:absolute;right:5%;top:50%;transform:translateY(-50%);
  width:min(460px,36vw);height:min(460px,36vw);border-radius:50%;
  border:1.5px solid rgba(255,255,255,.14);
  box-shadow:0 0 0 42px rgba(255,255,255,.05),0 0 0 84px rgba(255,255,255,.03);
  pointer-events:none;
}
.page-hero::after{
  content:"";position:absolute;right:5%;top:50%;transform:translateY(-50%);
  width:min(460px,36vw);height:min(460px,36vw);border-radius:50%;
  background-image:
    radial-gradient(circle,rgba(255,255,255,.75) 2.5px,transparent 3px),
    radial-gradient(circle,rgba(255,255,255,.5) 2px,transparent 2.5px);
  background-size:150px 150px,150px 150px;
  background-position:0 0,75px 75px;
  pointer-events:none;
  opacity:.8;
}
.page-hero .w15{position:relative;z-index:2;}
.page-hero .ph-inner{
  display:flex;align-items:flex-end;justify-content:space-between;
  gap:24px;flex-wrap:wrap;
}
.page-hero .ph-title h1{
  font-size:clamp(28px,3.2vw,44px);
  font-weight:900;letter-spacing:6px;line-height:1;
  text-shadow:0 4px 14px rgba(0,0,0,.25);
  margin-bottom:14px;
}
.page-hero .ph-title .en{
  font-size:12.5px;letter-spacing:3px;text-transform:uppercase;
  color:rgba(255,255,255,.62);
}
.page-hero .ph-title h1::after{
  content:"";display:inline-block;
  width:8px;height:8px;border-radius:50%;
  background:var(--szu-gold);
  box-shadow:0 0 0 3px rgba(204,168,77,.35);
  margin-left:16px;vertical-align:6px;
}
.breadcrumb{
  display:flex;align-items:center;gap:8px;
  font-size:14.5px;color:rgba(255,255,255,.75);
  margin-top:4px;
}
.breadcrumb a{color:rgba(255,255,255,.75);transition:color .25s;}
.breadcrumb a:hover{color:var(--szu-gold-light);}
.breadcrumb .sep{color:rgba(255,255,255,.42);}
.breadcrumb .current{color:#fff;font-weight:500;}

/* ---------- 主体布局 ---------- */
.main-body{
  padding:64px 0 90px;
  background:linear-gradient(180deg,var(--szu-main-pale) 0%,#fff 45%);
  position:relative;
}
.main-body > .w15{
  display:grid;
  grid-template-columns:340px minmax(0,1fr);
  gap:52px;
  align-items:start;
}
.main-body > .w15 > *{min-width:0;}
.news-list-panel{min-width:0;}

/* ---------- 侧边栏 ---------- */
.sidebar{min-width:0;align-self:start;}
.side-card{
  background:#fff;
  border-radius:16px;
  box-shadow:0 10px 40px rgba(54,49,142,.08);
  border:1px solid var(--szu-gray-border);
  overflow:hidden;
}
.cat-toggle,.chk{position:absolute;width:0;height:0;opacity:0;pointer-events:none;}

.side-head{
  padding:20px 24px;
  background:linear-gradient(135deg,var(--szu-main-1) 0%,var(--szu-main-2) 55%,var(--szu-header-1) 130%);
  color:#fff;
  display:flex;align-items:center;
  position:relative;
  overflow:hidden;
  user-select:none;
}
.side-head::after{
  content:"";position:absolute;
  right:-40px;top:-50px;
  width:140px;height:140px;border-radius:50%;
  border:1.5px solid rgba(255,255,255,.14);
  box-shadow:0 0 0 22px rgba(255,255,255,.05);
  pointer-events:none;
}
.side-head h3{
  font-size:18px;font-weight:700;letter-spacing:2.5px;
  position:relative;z-index:2;padding-left:14px;
  color:#fff;
  text-shadow:
    0 1px 0 #CCA84D,
    0 2px 4px rgba(121,115,187,.55),
    0 4px 10px rgba(121,115,187,.35),
    0 8px 18px rgba(121,115,187,.18);
}
.side-head h3::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:4px;height:16px;border-radius:2px;
  background:var(--szu-gold);
  box-shadow:0 0 8px rgba(204,168,77,.6);
}
.side-head .en{
  font-size:11px;letter-spacing:2px;
  color:rgba(255,255,255,.55);
  text-transform:uppercase;
  margin-left:auto;position:relative;z-index:2;
}
.side-body{padding:10px 0 14px;}

.mi{
  display:flex;align-items:center;
  color:var(--szu-text-body);
  letter-spacing:.3px;
  cursor:pointer;user-select:none;
  -webkit-tap-highlight-color:transparent;
  transition:background .22s ease,color .22s ease;
  position:relative;
}
.mi.lv1{padding:13px 22px;font-size:15.5px;font-weight:600;}
.mi.lv2{padding:11px 22px 11px 44px;font-size:14.5px;font-weight:500;}
.mi.lv3{padding:9px 22px 9px 66px;font-size:13.5px;font-weight:400;color:var(--szu-text-muted);}
.mi:hover{background:var(--szu-main-pale);color:var(--szu-main-1);}

.mi.lv1::before,
.mi.lv2::before{
  content:"";position:absolute;left:0;top:25%;bottom:25%;
  width:3px;border-radius:0 3px 3px 0;
  background:linear-gradient(180deg,var(--szu-gold),var(--szu-main-1));
  transform:scaleY(0);transform-origin:center;
  transition:transform .3s cubic-bezier(.4,0,.2,1);
}
.chk:checked + .mi.lv1,
.chk:checked + .mi.lv2{
  background:linear-gradient(90deg,rgba(54,49,142,.09) 0%,rgba(54,49,142,0) 90%);
  color:var(--szu-main-1);font-weight:700;
}
.chk:checked + .mi.lv1::before,
.chk:checked + .mi.lv2::before{transform:scaleY(1);}
.cat-list > li.on > .mi.lv1{color:var(--szu-main-1);font-weight:700;}
.cat-list > li.on > .mi.lv1::before{transform:scaleY(1);}

.mi .ar{
  width:8px;height:8px;margin-left:auto;
  border-right:1.8px solid #9A9AB8;
  border-bottom:1.8px solid #9A9AB8;
  transform:rotate(-45deg);
  transition:transform .3s ease,border-color .22s ease;
  flex-shrink:0;
}
.mi:hover .ar{border-color:var(--szu-main-1);}
.chk:checked + .mi .ar{transform:rotate(45deg);border-color:var(--szu-main-1);}

.m-sub,.m-sub2{max-height:0;overflow:hidden;transition:max-height .42s cubic-bezier(.4,0,.2,1);}
.chk:checked ~ .m-sub{max-height:1200px;}
.m-sub .chk:checked ~ .m-sub2{max-height:400px;}

/* ---------- 分页 ---------- */
.pagination{display:flex;justify-content:center;align-items:center;gap:8px;margin-top:44px;flex-wrap:wrap;}
.pagination a,
.pagination span{
  display:inline-flex;align-items:center;justify-content:center;
  min-width:40px;height:40px;padding:0 14px;border-radius:8px;
  font-size:15px;color:var(--szu-text-body);
  background:#fff;border:1px solid var(--szu-gray-border);
  transition:all .25s;cursor:pointer;
}
.pagination a:hover{
  color:var(--szu-main-1);border-color:var(--szu-main-1);
  background:var(--szu-main-light);
  transform:translateY(-2px);
}
.pagination .on{
  color:#fff;
  background:linear-gradient(135deg,var(--szu-main-1) 0%,var(--szu-main-2) 100%);
  border-color:var(--szu-main-1);
  font-weight:600;
  box-shadow:0 6px 16px rgba(54,49,142,.28);
}
.pagination .disabled{color:var(--szu-text-muted);background:#F7F7FB;cursor:not-allowed;opacity:.7;}
.pagination .ellipsis{background:transparent;border-color:transparent;cursor:default;color:var(--szu-text-muted);}
.pagination .ellipsis:hover{background:transparent;border-color:transparent;transform:none;color:var(--szu-text-muted);}

/* ============================================================
   页脚 —— 渐变背景 + 装饰图案 + 半透明效果
   ============================================================ */
.footer{
  position:relative;
  overflow:hidden;
  padding:64px 0 0;
  color:rgba(255,255,255,.78);
  /* 多层渐变叠加：右上金光 + 左下紫光 + 顶部柔光 + 主体斜向渐变 */
  background:
    radial-gradient(circle at 88% 15%, rgba(204, 168, 77, 0.22) 0%, transparent 42%),
    radial-gradient(circle at 6% 90%, rgba(118, 108, 220, 0.35) 0%, transparent 45%),
    radial-gradient(circle at 50% 0%, rgba(255, 255, 255, 0.06) 0%, transparent 60%),
    linear-gradient(135deg, var(--szu-footer-1) 0%, var(--szu-footer-2) 45%, var(--szu-footer-3) 100%);
  background-attachment:scroll;
}

/* 斜向流光带 */
.footer::before{
  content:"";
  position:absolute;
  left:-20%;
  top:-60%;
  width:55%;
  height:240%;
  background:linear-gradient(
    100deg,
    transparent 0%,
    rgba(255,255,255,0.035) 30%,
    rgba(204,168,77,0.09) 50%,
    rgba(255,255,255,0.035) 70%,
    transparent 100%
  );
  transform:rotate(12deg);
  filter:blur(2px);
  pointer-events:none;
  z-index:1;
}

/* 右下角同心圆装饰 */
.footer::after{
  content:"";
  position:absolute;
  right:-140px;
  bottom:-180px;
  width:520px;
  height:520px;
  border-radius:50%;
  border:1px solid rgba(255,255,255,0.09);
  box-shadow:
    0 0 0 55px rgba(255,255,255,0.035),
    0 0 0 110px rgba(255,255,255,0.02),
    0 0 0 165px rgba(204,168,77,0.045);
  pointer-events:none;
  z-index:1;
}

/* 顶部金色渐变分隔线 */
.footer_top_line{
  position:relative;
  z-index:3;
  height:2px;
  width:100%;
  background:linear-gradient(
    90deg,
    transparent 0%,
    rgba(204,168,77,0.55) 20%,
    rgba(204,168,77,0.9) 50%,
    rgba(204,168,77,0.55) 80%,
    transparent 100%
  );
  margin-bottom:52px;
}

/* 页脚内容网格 */
.footer .w15{
  position:relative;
  z-index:3;
  display:grid;
  grid-template-columns:1.4fr 1fr auto;
  gap:56px;
  padding-bottom:52px;
  align-items:start;
}

/* 联系我们区块：左侧金色竖线 */
.footer .foot_left{position:relative;}
.footer .foot_left::before{
  content:"";
  position:absolute;
  left:0;
  top:4px;
  bottom:4px;
  width:2px;
  background:linear-gradient(
    180deg,
    rgba(204,168,77,0.85) 0%,
    rgba(204,168,77,0.35) 50%,
    transparent 100%
  );
  border-radius:2px;
}

.footer .foot_left p{
  font-size:16px;
  line-height:2.15;
  color:rgba(255,255,255,.78);
  padding-left:26px;
  position:relative;
}
.footer .foot_left p + p{margin-top:4px;}
.footer .foot_left p::before{
  content:"";
  position:absolute;
  left:0;
  top:50%;
  transform:translateY(-50%);
  width:15px;
  height:15px;
  background-color:rgba(255,255,255,.6);
  -webkit-mask-repeat:no-repeat;
  -webkit-mask-position:center;
  -webkit-mask-size:contain;
  mask-repeat:no-repeat;
  mask-position:center;
  mask-size:contain;
}

/* 栏目标题 */
.footer_col h4{
  font-size:18px;
  color:#fff;
  font-weight:600;
  letter-spacing:1.5px;
  margin-bottom:24px;
  position:relative;
  padding:6px 0 13px;
}
.footer_col h4::after{
  content:"";
  position:absolute;
  left:0;
  bottom:0;
  width:36px;
  height:2px;
  background:linear-gradient(90deg, var(--szu-gold) 0%, rgba(204,168,77,0) 100%);
  border-radius:1px;
}
.footer_col h4::before{
  content:"";
  position:absolute;
  left:-14px;
  top:50%;
  transform:translateY(-50%);
  width:6px;
  height:6px;
  border-radius:50%;
  background:var(--szu-gold);
  box-shadow:0 0 0 4px rgba(204,168,77,0.16);
}

/* 友情链接 */
.footer_col li{
  margin-bottom:12px;
  position:relative;
  transition:transform .3s ease;
}
.footer_col li a{
  font-size:15.5px;
  color:rgba(255,255,255,.72);
  display:inline-flex;
  align-items:center;
  gap:8px;
  transition:color .25s ease,padding-left .25s ease;
}
.footer_col li a::before{
  content:"";
  display:inline-block;
  width:6px;
  height:6px;
  border-top:1.5px solid rgba(204,168,77,0.75);
  border-right:1.5px solid rgba(204,168,77,0.75);
  transform:rotate(45deg);
  transition:transform .3s ease,border-color .3s ease;
  flex-shrink:0;
}
.footer_col li a:hover{
  color:var(--szu-gold-light);
  padding-left:4px;
}
.footer_col li a:hover::before{
  border-color:var(--szu-gold-light);
  transform:rotate(45deg) translateX(2px);
}

/* 二维码区 */
.footer_qr{
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:14px;
  flex-shrink:0;
  position:relative;
}
.footer_qr .qr-box{
  width:130px;
  height:130px;
  padding:8px;
  background:rgba(255,255,255,0.96);
  border-radius:12px;
  box-shadow:
    0 10px 26px rgba(0,0,0,0.28),
    0 0 0 1px rgba(255,255,255,0.15);
  display:flex;
  align-items:center;
  justify-content:center;
  overflow:hidden;
  transition:transform .35s ease,box-shadow .35s ease;
  position:relative;
  z-index:2;
}
.footer_qr .qr-box:hover{
  transform:translateY(-4px);
  box-shadow:
    0 18px 38px rgba(0,0,0,0.38),
    0 0 0 3px rgba(204,168,77,0.35);
}
.footer_qr .qr-box img{width:100%;height:100%;object-fit:contain;display:block;}
.footer_qr .qr-title{
  font-size:14px;
  color:rgba(255,255,255,.85);
  letter-spacing:1.5px;
  text-align:center;
  position:relative;
  padding-top:12px;
}
.footer_qr .qr-title::before{
  content:"";
  position:absolute;
  left:50%;
  top:0;
  transform:translateX(-50%);
  width:26px;
  height:2px;
  background:var(--szu-gold);
  border-radius:1px;
}
.footer_qr .qr-desc{
  font-size:12.5px;
  color:rgba(255,255,255,.55);
  letter-spacing:.5px;
  text-align:center;
  margin-top:2px;
}

/* 底部版权条：半透明玻璃效果 */
.footer_bottom{
  position:relative;
  z-index:3;
  padding:20px 0;
  font-size:14.5px;
  color:rgba(255,255,255,.62);
  text-align:center;
  line-height:1.9;
  background:rgba(0,0,0,0.14);
  border-top:1px solid rgba(255,255,255,0.08);
  -webkit-backdrop-filter:blur(4px);
  backdrop-filter:blur(4px);
}
.footer_bottom::before{
  content:"";
  position:absolute;
  left:50%;
  top:0;
  transform:translateX(-50%);
  width:120px;
  height:1px;
  background:linear-gradient(
    90deg,
    transparent 0%,
    rgba(204,168,77,0.9) 50%,
    transparent 100%
  );
}

/* ---------- 搜索弹层 ---------- */
.search-dialog-box{
  position:fixed;inset:0;z-index:2000;
  display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,rgba(54,49,142,.96),rgba(78,69,135,.96));
  -webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);
  opacity:0;visibility:hidden;transition:opacity .35s,visibility .35s;
}
.search-dialog-box.on{opacity:1;visibility:visible;}
.search-dialog{position:relative;z-index:3;width:100%;max-width:780px;padding:0 24px;box-sizing:border-box;}
.search-dialog .wrap-inner{transform:translateY(-18px);transition:transform .42s cubic-bezier(.22,.68,.35,1);}
.search-dialog-box.on .wrap-inner{transform:translateY(0);}
.search-label{font-size:14.5px;letter-spacing:5px;color:rgba(255,255,255,.62);margin-bottom:24px;text-transform:uppercase;}
.tc_search{position:relative;}
.tc_search .qwss{
  width:100%;height:70px;background:transparent;
  border:none;border-bottom:2px solid rgba(255,255,255,.4);
  outline:none;color:#fff;font-size:25px;font-family:inherit;
  padding:6px 74px 6px 0;transition:border-color .3s;
}
.tc_search .qwss:focus{border-bottom-color:var(--szu-gold);}
.tc_search .qwss::placeholder{color:rgba(255,255,255,.45);}
.tc_search .btn_blue{
  position:absolute;right:0;top:50%;transform:translateY(-50%);
  width:56px;height:56px;border-radius:50%;
  background:var(--szu-gold);color:#fff;
  display:flex;align-items:center;justify-content:center;
  transition:.25s;cursor:pointer;
}
.tc_search .btn_blue:hover{background:#fff;color:var(--szu-main-1);transform:translateY(-50%) scale(1.06);}
.search-hot{margin-top:30px;display:flex;flex-wrap:wrap;gap:10px;align-items:center;font-size:15px;color:rgba(255,255,255,.58);}
.search-hot a{
  padding:7px 18px;border-radius:18px;
  border:1px solid rgba(255,255,255,.26);
  color:rgba(255,255,255,.84);font-size:14.5px;
  transition:.25s;
}
.search-hot a:hover{background:var(--szu-gold);color:#fff;border-color:var(--szu-gold);}
.search-close{
  position:absolute;top:34px;right:38px;z-index:5;
  width:58px;height:58px;border-radius:50%;
  background:rgba(255,255,255,.1);
  border:1px solid rgba(255,255,255,.35);
  color:#fff;display:flex;align-items:center;justify-content:center;
  transition:.35s;cursor:pointer;
}
.search-close svg{width:24px;height:24px;}
.search-close:hover{background:var(--szu-gold);color:#fff;border-color:var(--szu-gold);transform:rotate(90deg);}

/* ---------- 回到顶部 ---------- */
.fhdb{
  position:fixed;right:30px;bottom:44px;z-index:900;
  width:52px;height:52px;border-radius:50%;
  background:var(--szu-main-1);color:#fff;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 8px 22px rgba(54,49,142,.35);
  opacity:0;visibility:hidden;transform:translateY(14px);
  transition:.35s;cursor:pointer;
}
.fhdb.on{opacity:1;visibility:visible;transform:translateY(0);}
.fhdb:hover{background:var(--szu-gold);transform:translateY(-3px);}
.fhdb svg{width:22px;height:22px;}

/* ============================================================
   通用响应式
   ============================================================ */

@media(max-width:1100px){
  .nav-menu > ul > li > a{font-size:14.5px;}
  .main-body > .w15{grid-template-columns:300px minmax(0,1fr);gap:36px;}
  .footer .w15{grid-template-columns:1.4fr 1fr auto;gap:36px;}
  .footer .foot_left{grid-column:auto;}
  .footer_qr{justify-self:end;}
}

@media(max-width:992px){
  .header-logo-inner{min-height:76px;padding:10px 0;gap:16px;}
  #logo{width:clamp(160px,32vw,280px);}
  #logo img{max-height:60px;}
  .nav-toggle{display:flex;}
  .mainnav{max-height:none!important;overflow:visible!important;opacity:1!important;pointer-events:auto!important;}
  .mainnav-inner{height:64px;justify-content:flex-end;}
  .nav-menu{
    position:absolute;top:100%;left:0;right:0;
    background:#372E8A;
    max-height:0;overflow:hidden;
    transition:max-height .4s;
    box-shadow:0 12px 24px rgba(55,46,138,.28);
    z-index:100;flex:none;width:100%;
  }
  .nav-menu.open{max-height:860px;overflow-y:auto;}
  .nav-menu > ul{flex-direction:column;align-items:stretch;width:100%;}
  .nav-menu > ul > li{flex:0 0 auto;width:100%;}
  .nav-menu > ul > li > a{height:auto;line-height:1.6;padding:16px 24px;text-align:left;font-size:16.5px;border-bottom:1px solid rgba(255,255,255,.1);}
  .nav-menu > ul > li > a::after{display:none;}
  .nav-menu > ul > li:has(.sub) > a h3::after{display:none;}
  .nav-menu > ul > li:has(.sub) > a{position:relative;padding-right:52px;}
  .nav-menu > ul > li:has(.sub) > a::after{
    display:block;content:"";position:absolute;
    right:24px;left:auto;top:50%;bottom:auto;
    width:8px;height:8px;background:transparent;
    border-right:2px solid currentColor;
    border-bottom:2px solid currentColor;
    transform:translateY(-70%) rotate(45deg);
    transition:transform .3s ease;margin-left:0;
  }
  .nav-menu > ul > li.open:has(.sub) > a::after{transform:translateY(-30%) rotate(-135deg);}
  .nav-menu > ul > li:hover > a,
  .nav-menu > ul > li.on > a{background:rgba(0,0,0,.16);}
  .nav-menu .sub{
    position:static;transform:none!important;
    opacity:1;visibility:visible;
    background:rgba(0,0,0,.18);
    box-shadow:none;border-radius:0;
    max-height:0;overflow:hidden;padding:0;
    transition:max-height .3s;display:block;
  }
  .nav-menu > ul > li.open .sub{max-height:420px;padding:6px 0;}
  .nav-menu .sub li a{padding:12px 46px;font-size:15.5px;}

  .main-body > .w15{grid-template-columns:1fr;gap:44px;}
  .sidebar{max-width:100%;}

  .side-head{cursor:pointer;padding-right:60px;}
  .side-head::before{
    content:"";position:absolute;right:24px;top:50%;
    width:9px;height:9px;
    border-right:2px solid rgba(255,255,255,.9);
    border-bottom:2px solid rgba(255,255,255,.9);
    transform:translateY(-70%) rotate(45deg);
    transition:transform .35s ease;z-index:3;
  }
  .cat-toggle:checked ~ .side-head::before{transform:translateY(-30%) rotate(-135deg);}
  .side-body{
    padding:0;max-height:0;overflow:hidden;opacity:0;
    transition:max-height .5s cubic-bezier(.4,0,.2,1),opacity .35s ease,padding .35s ease;
  }
  .cat-toggle:checked ~ .side-body{max-height:2000px;opacity:1;padding:10px 0 14px;}

  /* 页脚平板端 */
  .footer::after{
    width:380px;
    height:380px;
    right:-100px;
    bottom:-140px;
  }
  .footer .w15{grid-template-columns:1fr;gap:34px;padding-bottom:40px;}
  .footer .foot_left{grid-column:auto;}
}

@media(max-width:768px){
  .pc_top_lj .l{display:none;}
  .pc_top_lj>div{justify-content:center;}
  .pc_top_lj .r{gap:2px;}
  .pc_top_lj{font-size:14px;line-height:40px;}
  .pc_top_lj .r a{font-size:14px;}
  .header-logo-inner{min-height:64px;padding:8px 0;gap:10px;}
  #logo{width:clamp(230px,52vw,280px);}
  #logo img{max-height:48px;}
  .header-logo::before,
  .header-logo::after{display:none;}
  .search_btn{height:36px;padding:0 12px;font-size:13px;}
  .search_btn svg{width:14px;height:14px;}

  .page-hero{padding:44px 0 34px;}
  .page-hero .ph-inner{flex-direction:column;align-items:flex-start;gap:14px;}
  .page-hero .ph-title h1{font-size:26px;letter-spacing:3px;margin-bottom:10px;}
  .page-hero .ph-title .en{font-size:11px;letter-spacing:2px;}
  .breadcrumb{font-size:13px;}

  .main-body{padding:44px 0 60px;}
  .main-body > .w15{padding:0 16px;gap:32px;}

  .pagination{gap:6px;margin-top:36px;}
  .pagination a,
  .pagination span{min-width:36px;height:36px;padding:0 10px;font-size:14px;border-radius:7px;}

  .side-head{padding:16px 52px 16px 18px;}
  .side-head h3{font-size:17px;letter-spacing:1.5px;}
  .side-head h3::before{height:14px;}
  .side-head .en{font-size:10px;}
  .mi.lv1{padding:12px 18px;font-size:15px;}
  .mi.lv2{padding:10px 18px 10px 36px;font-size:14px;}
  .mi.lv3{padding:9px 18px 9px 56px;font-size:13px;}

  /* 页脚移动端 */
  .footer::after{
    width:260px;
    height:260px;
    right:-80px;
    bottom:-100px;
  }
  .footer::before{
    width:80%;
    left:-30%;
  }
  .footer{padding:44px 0 0;}
  .footer .w15{grid-template-columns:1fr 1fr;gap:30px;padding-bottom:36px;}
  .footer .foot_left{grid-column:1 / -1;padding-left:14px;}
  .footer_qr{
    grid-column:1 / -1;
    justify-self:start;
    flex-direction:row;
    align-items:center;
    gap:16px;
  }
  .footer_qr .qr-box{width:100px;height:100px;flex-shrink:0;}
  .footer_qr .qr-title{padding-top:0;}
  .footer_qr .qr-title::before{display:none;}
  .footer_qr .qr-text{text-align:left;}

  .search-close{top:18px;right:18px;width:48px;height:48px;}
  .search-close svg{width:19px;height:19px;}
  .tc_search .qwss{font-size:20px;height:60px;}
}

@media(max-width:479px){
  .footer_col h4{font-size:16px;}
  .footer .foot_left p{font-size:14.5px;}
}