/* 开缠门 · 全站统一样式 */
:root {
  --font: -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
  --radius: 12px;
  --radius-sm: 8px;
  --transition: .2s ease;
}
/* 三色主题变量 */
[data-theme=medical] {
  --primary: #1D9E75; --primary-dark: #0F6E56; --primary-light: #E1F5EE;
  --accent: #5DCAA5; --grad1: #1D9E75; --grad2: #085041;
}
[data-theme=finance] {
  --primary: #185FA5; --primary-dark: #0C447C; --primary-light: #E6F1FB;
  --accent: #85B7EB; --grad1: #185FA5; --grad2: #042C53;
}
[data-theme=about] {
  --primary: #D85A30; --primary-dark: #993C1D; --primary-light: #FAECE7;
  --accent: #F0997B; --grad1: #D85A30; --grad2: #712B13;
}
/* 基础 */
*{box-sizing:border-box;margin:0;padding:0}
body{font-family:var(--font);background:#f5f6fa;color:#222;line-height:1.7;min-height:100vh}
a{text-decoration:none;color:inherit}
/* 顶部导航 */
.topbar{position:sticky;top:0;z-index:100;display:flex;align-items:center;justify-content:space-between;padding:0 24px;height:60px;background:#fff;border-bottom:1px solid #e8e8e8;backdrop-filter:blur(12px)}
.brand{font-size:20px;font-weight:700;color:var(--primary);display:flex;align-items:center;gap:6px}
.brand .dot{display:inline-flex;width:28px;height:28px;background:var(--primary);color:#fff;border-radius:6px;align-items:center;justify-content:center;font-size:14px}
.topnav{display:flex;align-items:center;gap:20px;font-size:14px}
.topnav a{padding:6px 0;border-bottom:2px solid transparent;color:#666;transition:var(--transition)}
.topnav a:hover,.topnav a.active{color:var(--primary);border-color:var(--primary)}
/* SSO 登录区 */
#kcmAuthFloat{position:fixed;top:12px;right:24px;z-index:200;display:flex;align-items:center;gap:10px}
#kcmAuthFloat a{font-size:13px;padding:6px 16px;border-radius:20px;transition:var(--transition)}
#kcmAuthFloat .kcm-reg{background:transparent;border:1px solid var(--primary);color:var(--primary)}
#kcmAuthFloat .kcm-reg:hover{background:var(--primary-light)}
#kcmAuthFloat .kcm-login{background:var(--primary);color:#fff;border:1px solid var(--primary)}
#kcmAuthFloat .kcm-login:hover{background:var(--primary-dark)}
#kcmAuthFloat .kcm-user{color:#666;font-size:13px}
#kcmAuthFloat .kcm-out{color:#999;font-size:12px;margin-left:4px}
/* 底部 */
footer{text-align:center;padding:24px 16px;font-size:12px;color:#999;border-top:1px solid #e8e8e8;margin-top:40px}
/* Hero 区域 */
.hero{text-align:center;padding:60px 20px 40px}
.hero .badge{display:inline-block;background:var(--primary-light);color:var(--primary-dark);font-size:12px;padding:4px 14px;border-radius:20px;margin-bottom:12px}
.hero h1{font-size:36px;font-weight:700;color:var(--primary-dark);margin-bottom:10px}
.hero .sub{font-size:16px;color:#666;margin-bottom:20px}
/* 三卡片 */
.card-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:20px;max-width:960px;margin:0 auto;padding:0 20px 40px}
.card{border-radius:var(--radius);padding:30px 24px;cursor:pointer;transition:var(--transition);position:relative;overflow:hidden;border:1px solid transparent}
.card:hover{transform:translateY(-4px);box-shadow:0 12px 30px rgba(0,0,0,.08)}
.card h2{font-size:22px;font-weight:700;margin-bottom:8px}
.card p{font-size:14px;margin-bottom:16px;opacity:.85}
.card .btn{display:inline-block;padding:8px 24px;border-radius:20px;font-size:13px;font-weight:500;transition:var(--transition)}
.card .btn:hover{opacity:.85}
/* 各主题卡片 */
.card.medical{background:#E1F5EE;color:#085041;border-color:#9FE1CB}
.card.medical .btn{background:#1D9E75;color:#fff}
.card.finance{background:#E6F1FB;color:#042C53;border-color:#B5D4F4}
.card.finance .btn{background:#185FA5;color:#fff}
.card.about{background:#FAECE7;color:#712B13;border-color:#F5C4B3}
.card.about .btn{background:#D85A30;color:#fff}
/* 子页面内容区 */
.section{max-width:860px;margin:0 auto;padding:0 20px 40px}
.section h2{font-size:22px;font-weight:700;color:var(--primary-dark);margin:30px 0 16px}
.section p{font-size:15px;color:#555;margin-bottom:16px}
.link-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:14px;margin:16px 0 30px}
.link-card{display:block;background:#fff;border:1px solid #e8e8e8;border-radius:var(--radius-sm);padding:18px 16px;transition:var(--transition)}
.link-card:hover{border-color:var(--primary);box-shadow:0 4px 12px rgba(0,0,0,.06);transform:translateY(-2px)}
.link-card .icon{font-size:24px;margin-bottom:8px;display:block}
.link-card .title{font-size:15px;font-weight:600;color:#333}
.link-card .desc{font-size:12px;color:#999;margin-top:4px}
/* 页面头部（非首页） */
.page-header{background:linear-gradient(135deg,var(--grad1),var(--grad2));color:#fff;padding:48px 20px;text-align:center}
.page-header h1{font-size:28px;margin-bottom:6px}
.page-header p{font-size:14px;opacity:.85}
/* AI 对话页 */
.chat-container{max-width:720px;margin:0 auto;padding:20px;display:flex;flex-direction:column;height:calc(100vh - 140px)}
.chat-messages{flex:1;overflow-y:auto;padding:12px;background:#fff;border-radius:var(--radius);border:1px solid #e8e8e8;margin-bottom:12px}
.chat-input-wrap{display:flex;gap:8px}
.chat-input-wrap input{flex:1;padding:10px 14px;border:1px solid #ddd;border-radius:var(--radius-sm);font-size:14px;outline:none;transition:var(--transition)}
.chat-input-wrap input:focus{border-color:var(--primary)}
.chat-input-wrap button{padding:10px 20px;background:var(--primary);color:#fff;border:none;border-radius:var(--radius-sm);cursor:pointer;font-size:14px}
.msg{padding:10px 14px;border-radius:10px;margin-bottom:8px;max-width:80%;font-size:14px;line-height:1.6}
.msg.user{background:var(--primary-light);margin-left:auto;border-bottom-right-radius:2px}
.msg.bot{background:#f0f0f0;margin-right:auto;border-bottom-left-radius:2px}
/* 响应式 */
@media(max-width:640px){
  .hero h1{font-size:26px}
  .card-grid{grid-template-columns:1fr}
  .topnav{gap:10px;font-size:12px}
}