:root{
    --orange:#F08200;
    --orange-deep:#D96F00;
    --orange-soft:#FFF4E5;
    --ink:#2B2B2B;
    --ink-light:#5A5A5A;
    --bg:#FFFFFF;
    --bg-warm:#FFFBF5;
    --line:#F0E4D4;
  }
  *{margin:0;padding:0;box-sizing:border-box;}
  html{scroll-behavior:smooth;}
  body{
    font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
    font-weight:300;
    font-size:14px;
    line-height:1.9;
    letter-spacing:1.5px;
    color:var(--ink);
    background:var(--bg);
  }
  img{max-width:100%;display:block;vertical-align:top;}
  a{color:var(--orange);text-decoration:none;}
  a:hover{color:var(--orange-deep);}

  .wrap{max-width:1000px;margin:0 auto;padding:0 24px;}

  nav.top{
    position:sticky;top:0;z-index:100;
    background:rgba(255,255,255,.95);backdrop-filter:blur(6px);
    border-bottom:1px solid var(--line);
  }
  nav.top .wrap{display:flex;align-items:center;justify-content:space-between;height:56px;}
  nav.top .logo-mini{display:flex;align-items:center;gap:10px;font-weight:500;font-size:15px;color:var(--ink);}
  nav.top .logo-mini img{height:26px;width:auto;}
  nav.top .links a{font-size:13px;color:var(--ink-light);margin-left:18px;}
  nav.top .links a:hover{color:var(--orange);}

  /* 活动分类快捷入口（首页最上方·预留扩展位） */
  .cat-nav{background:var(--bg-warm);border-bottom:1px solid var(--line);padding:16px 0 20px;}
  .cat-nav .cat-head{display:flex;align-items:baseline;gap:10px;margin-bottom:14px;}
  .cat-nav .cat-head .t{font-size:15px;font-weight:500;color:var(--ink);letter-spacing:2px;}
  .cat-nav .cat-head .e{font-size:12px;color:var(--orange);letter-spacing:3px;}
  .cat-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:12px;}
  .cat-card{display:flex;flex-direction:column;align-items:center;justify-content:center;background:#fff;border:1px solid var(--line);border-radius:12px;padding:14px 10px;text-align:center;text-decoration:none;transition:all .2s;min-height:104px;}
  .cat-card:hover{border-color:var(--orange);transform:translateY(-2px);box-shadow:0 6px 16px rgba(240,130,0,.12);}
  .cat-card .ic{font-size:24px;line-height:1;margin-bottom:6px;}
  .cat-card .nm{font-size:14px;font-weight:500;color:var(--ink);letter-spacing:1px;line-height:1.4;}
  .cat-card .ds{font-size:11px;color:var(--ink-light);margin-top:4px;line-height:1.6;letter-spacing:.5px;}
  .cat-card.soon{background:transparent;border:1.5px dashed #D8D0C2;cursor:default;}
  .cat-card.soon:hover{transform:none;box-shadow:none;border-color:#D8D0C2;background:#FDFAF5;}
  .cat-card.soon .nm{color:#B5B0A6;font-weight:400;}
  .cat-card.soon .ds{color:#C9C4BA;}

  header.hero{
    background:linear-gradient(135deg,var(--orange-soft) 0%,#FFF 60%);
    padding:56px 0 48px;
    text-align:center;
    border-bottom:1px solid var(--line);
  }
  header.hero .logo-big{width:120px;margin:0 auto 18px;}
  header.hero h1{font-size:28px;font-weight:600;letter-spacing:4px;color:var(--ink);}
  header.hero .en{font-size:13px;letter-spacing:6px;color:var(--ink-light);margin-top:6px;}
  header.hero .slogan{font-size:15px;font-weight:500;color:var(--orange);margin-top:16px;line-height:2;}
  header.hero .facts{margin-top:18px;font-size:13px;color:var(--ink-light);line-height:2;}
  header.hero .facts b{color:var(--ink);font-weight:500;}
  header.hero .cta{margin-top:22px;display:inline-block;background:var(--orange);color:#fff;font-size:14px;font-weight:500;padding:10px 34px;border-radius:40px;letter-spacing:2px;}
  header.hero .cta:hover{background:var(--orange-deep);color:#fff;}
  header.hero .hero-photo{margin:26px auto 0;max-width:860px;}

  section{padding:50px 0;border-bottom:1px solid var(--line);}
  section.alt{background:var(--bg-warm);}
  .kicker{font-size:12px;letter-spacing:4px;color:var(--orange);margin-bottom:8px;}
  h2{font-size:22px;font-weight:600;letter-spacing:2px;margin-bottom:8px;color:var(--ink);}
  h3{font-size:18px;font-weight:500;margin:26px 0 10px;color:var(--ink);}
  .lead{font-size:15px;color:var(--ink-light);margin-bottom:16px;}
  p{margin-bottom:12px;}
  ul{padding-left:22px;margin-bottom:12px;}
  li{margin-bottom:6px;}
  .hl{font-weight:500;color:var(--orange);}

  /* 图片网格：单/双/四图，版面与大小一致 */
  figure{margin:16px 0;}
  figure img{border-radius:12px;box-shadow:0 4px 16px rgba(0,0,0,.06);}
  figcaption{font-size:12px;color:var(--ink-light);margin-top:8px;letter-spacing:1px;}
  .fig-single{max-width:860px;margin:16px auto;}
  .fig-single img,.fig-single-big img{width:100%;}
  .fig-wide{max-width:1000px;margin:16px auto;}
  .fig-wide img{width:100%;}
  .fig-tall{max-width:380px;margin:24px auto;}
  .fig-tall img{width:100%;height:auto;display:block;border-radius:12px;box-shadow:0 4px 16px rgba(0,0,0,.06);}
  #brand{background:linear-gradient(180deg,#FFFBF5 0%,#FFF2DE 100%);}
  #brand .fig-tall{max-width:480px;}
  .grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin:16px 0;}
  .grid3 figure{margin:0;}
  .grid3 img{width:100%;aspect-ratio:3/4;object-fit:cover;border-radius:10px;background:#F4EDE1;}
  .wx-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px;margin-top:18px;}
  .wx-box{background:#fff;border:1px solid var(--line);border-radius:14px;padding:16px;text-align:center;}
  .wx-box img{width:170px;height:auto;margin:0 auto 10px;border-radius:8px;}
  .wx-box .name{font-size:14px;font-weight:500;color:var(--ink);}
  .wx-box .id{font-size:13px;color:var(--orange);margin-top:4px;letter-spacing:1px;}
  .overseas-wrap{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;align-items:stretch;margin-top:16px;}
  .overseas-wrap .card{min-width:0;}
  .overseas-wrap .grid2{min-width:0;margin:0;}
  .overseas-wrap .grid2 img{aspect-ratio:3/4;}
  .grid2{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;margin:16px 0;}
  .grid4{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin:16px 0;}
  .grid2 figure,.grid4 figure{margin:0;}
  .grid2 img,.grid4 img{width:100%;aspect-ratio:4/3;object-fit:cover;background:#F4EDE1;}
  .grid4 figure{position:relative;overflow:hidden;border-radius:10px;}
  .grid4 figcaption{position:absolute;left:50%;bottom:14px;transform:translateX(-50%);color:#fff;font-size:17px;font-weight:600;padding:4px 14px;letter-spacing:3px;white-space:nowrap;text-shadow:0 1px 3px rgba(0,0,0,.75),0 0 10px rgba(0,0,0,.45);}
  .grid-certs{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;margin:16px 0;}
  .grid-certs figure{margin:0;}
  .grid-certs img{width:100%;max-height:560px;object-fit:contain;background:#fff;}
  @media(max-width:640px){
    nav.top .links{display:none;}
    header.hero{padding:40px 0 36px;}
    section{padding:38px 0;}
    h1{font-size:24px;}
    h2{font-size:20px;}
    .grid4{grid-template-columns:repeat(2,1fr);}
    .grid3{grid-template-columns:repeat(2,1fr);}
    .cards-2col{grid-template-columns:1fr;}
    .overseas-wrap{grid-template-columns:1fr;}
    .grid2,.grid-certs{grid-template-columns:1fr;}
    .cat-grid{grid-template-columns:repeat(3,1fr);gap:10px;}
    .cat-card{min-height:88px;padding:10px 6px;}
    .cat-card .ds{display:none;}
  }
  @media(max-width:900px){
    .cat-grid{grid-template-columns:repeat(4,1fr);}
  }

  .stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:14px;margin:14px 0 6px;}
  .stat{background:#fff;border:1px solid var(--line);border-radius:14px;padding:18px;text-align:center;}
  .stat .num{font-size:26px;font-weight:600;color:var(--orange);letter-spacing:1px;}
  .stat .label{font-size:13px;color:var(--ink-light);margin-top:4px;}

  .cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:16px;margin-top:6px;}
  .cards-2col{grid-template-columns:repeat(2,1fr);align-items:stretch;}
  .cards-2col .card{display:flex;flex-direction:column;}
  .cards-2col .card .tags{margin-top:auto;}
  .card{background:#fff;border:1px solid var(--line);border-radius:14px;padding:20px;}
  .card h4{font-size:15px;font-weight:500;color:var(--orange);margin-bottom:10px;letter-spacing:1px;}
  .card-photo{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:10px;margin-bottom:12px;background:#F4EDE1;}
  .card ul{padding-left:18px;font-size:13px;}

  .tags{display:flex;flex-wrap:wrap;gap:10px;margin:10px 0 4px;}
  .tag{background:var(--orange-soft);color:var(--orange-deep);font-size:13px;padding:5px 14px;border-radius:30px;letter-spacing:1px;}

  .quali{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:14px;}
  .quali .item{background:#fff;border-left:3px solid var(--orange);padding:12px 16px;font-size:14px;}

  details{border:1px solid var(--line);border-radius:12px;margin-bottom:10px;background:#fff;overflow:hidden;}
  summary{cursor:pointer;font-size:14px;font-weight:500;padding:14px 18px;list-style:none;position:relative;}
  summary::after{content:"+";position:absolute;right:18px;top:50%;transform:translateY(-50%);color:var(--orange);font-weight:500;}
  details[open] summary::after{content:"−";}
  details .a{padding:0 18px 14px;font-size:14px;color:var(--ink-light);}

  .contact-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:16px;}
  .contact-box{background:#fff;border:1px solid var(--line);border-radius:14px;padding:20px;}
  .contact-box h4{font-size:15px;font-weight:500;color:var(--orange);margin-bottom:8px;}

  footer{background:var(--ink);color:#C9C9C9;padding:30px 0;font-size:12px;letter-spacing:1.5px;text-align:center;}
  footer a{color:#F5B978;}
  footer .slogan{color:#fff;font-size:14px;margin-bottom:8px;letter-spacing:2px;}