:root{
  --primary:#194c6d; --primary-light:#2a7ab5; --bg:#f5f6fa; --card:#fff;
  --border:#e2e8f0; --text:#1a202c; --text-secondary:#718096;
  --green:#38a169; --gold:#d69e2e; --red:#e53e3e; --radius:14px;
}
*{box-sizing:border-box;margin:0;padding:0}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;
  background:var(--bg);color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased}
a{text-decoration:none;color:inherit}
.wrap{max-width:1040px;margin:0 auto;padding:0 18px}
/* ── 顶部品牌条 ── */
.topbar{position:sticky;top:0;z-index:50;background:var(--primary);color:#fff;
  display:flex;align-items:center;justify-content:space-between;padding:12px 18px}
.topbar .brand{display:flex;align-items:center;gap:10px;font-weight:700;letter-spacing:.5px}
.topbar .brand .logo{width:30px;height:30px;border-radius:8px;background:linear-gradient(135deg,var(--gold),#b7791f);
  display:flex;align-items:center;justify-content:center;font-weight:800;color:#1a202c}
.lang-toggle{display:flex;background:rgba(255,255,255,.15);border-radius:999px;overflow:hidden}
.lang-toggle button{border:0;background:transparent;color:#fff;padding:6px 14px;font-size:13px;cursor:pointer;font-weight:600}
.lang-toggle button.active{background:#fff;color:var(--primary)}
/* ── Hero ── */
.hero{background:linear-gradient(135deg,var(--primary),#0f3147);color:#fff;padding:46px 18px 40px;text-align:center}
.hero h1{font-size:34px;margin-bottom:8px;letter-spacing:1px}
.hero p{opacity:.85;font-size:15px}
.hero .sub{margin-top:6px;font-size:13px;opacity:.7;letter-spacing:2px}
/* ── 卡片网格（注册中心）── */
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:18px;margin:34px 0}
.rcard{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:22px;
  transition:transform .15s ease,box-shadow .15s ease;display:flex;flex-direction:column;gap:10px}
.rcard:hover{transform:translateY(-4px);box-shadow:0 12px 30px rgba(25,76,109,.12)}
.rcard .ic{width:46px;height:46px;border-radius:12px;background:rgba(25,76,109,.1);color:var(--primary);
  display:flex;align-items:center;justify-content:center;font-size:22px}
.rcard h3{font-size:17px;color:var(--primary)}
.rcard .en{font-size:12px;color:var(--text-secondary);letter-spacing:1px;text-transform:uppercase}
.rcard p{font-size:13px;color:var(--text-secondary);flex:1}
.rcard .go{margin-top:6px;align-self:flex-start;background:var(--primary);color:#fff;padding:9px 18px;
  border-radius:999px;font-size:14px;font-weight:600}
.rcard .go:hover{background:var(--primary-light)}
/* ── 表单 ── */
.form-card{max-width:680px;margin:34px auto;background:var(--card);border:1px solid var(--border);
  border-radius:var(--radius);padding:30px}
.form-card h2{color:var(--primary);font-size:22px;margin-bottom:4px}
.form-card .desc{color:var(--text-secondary);font-size:13px;margin-bottom:22px}
.field{margin-bottom:16px}
.field label{display:block;font-size:14px;font-weight:600;margin-bottom:6px}
.field label .en{font-weight:400;color:var(--text-secondary);font-size:12px;margin-left:6px}
.field input,.field select,.field textarea{width:100%;padding:11px 13px;border:1px solid var(--border);
  border-radius:10px;font-size:14px;font-family:inherit;background:#fff;color:var(--text)}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--primary-light);
  box-shadow:0 0 0 3px rgba(42,122,181,.15)}
.field .hint{font-size:12px;color:var(--text-secondary);margin-top:4px}
.row{display:flex;gap:14px}.row>*{flex:1}
.req{color:var(--red)}
.btn-primary{width:100%;background:var(--primary);color:#fff;border:0;padding:13px;border-radius:12px;
  font-size:16px;font-weight:700;cursor:pointer;margin-top:8px}
.btn-primary:hover{background:var(--primary-light)}
.btn-primary:disabled{opacity:.6;cursor:not-allowed}
.alert{display:none;padding:12px 14px;border-radius:10px;font-size:14px;margin-bottom:16px}
.alert.ok{display:block;background:#e6fffa;color:#285e61;border:1px solid #b2f5ea}
.alert.err{display:block;background:#fff5f5;color:#c53030;border:1px solid #fed7d7}
/* ── 页脚注册带（仿 GCJJF 页脚）── */
.regband{background:#0f3147;color:#fff;padding:26px 18px;margin-top:40px}
.regband .ttl{text-align:center;font-size:15px;letter-spacing:2px;opacity:.85;margin-bottom:16px}
.regband .links{display:flex;flex-wrap:wrap;justify-content:center;gap:10px;max-width:900px;margin:0 auto}
.regband a{background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.18);color:#fff;
  padding:10px 18px;border-radius:10px;font-size:13px;font-weight:600;transition:.15s}
.regband a:hover{background:var(--gold);color:#1a202c;border-color:var(--gold)}
.regband a .en{display:block;font-size:11px;opacity:.75;font-weight:400;letter-spacing:1px}
/* ── 站点页脚 ── */
.sitefoot{background:#16313f;color:#cbd5e0;text-align:center;padding:20px 18px;font-size:13px}
.sitefoot a{color:#cbd5e0}
.sitefoot .icp{margin-top:6px}
.sitefoot .icp a{color:inherit;text-decoration:none}
/* ── 语言切换：英文态隐藏 .zh，中文态隐藏 .en ── */
html.lang-en .zh{display:none}
html.lang-zh .en{display:none}
.note{background:#fffaf0;border:1px solid #f6e05e;border-left:4px solid var(--gold);padding:12px 14px;
  border-radius:8px;font-size:13px;color:#744210;margin-bottom:20px}
.backlink{display:inline-block;margin:18px 0 0;color:var(--primary);font-size:13px;font-weight:600}
@media(max-width:520px){.hero h1{font-size:26px}.row{flex-direction:column;gap:0}}

/* ── 顶部导航链接（首页 + 注册中心）── */
.topbar .topnav{display:flex;align-items:center;gap:6px;flex:1;margin:0 18px}
.topbar .topnav a{color:rgba(255,255,255,.85);font-size:14px;font-weight:500;padding:6px 14px;
  border-radius:8px;transition:background .15s,color .15s}
.topbar .topnav a:hover{background:rgba(255,255,255,.15);color:#fff}
.topbar .topnav a.topnav-reg{background:rgba(255,255,255,.12)}
.topbar .topnav a.topnav-reg:hover{background:rgba(255,255,255,.25)}