:root{
  --purple:#7C4DFF;
  --purple-deep:#5E35B1;
  --blue:#03A9F4;
  --bg:#F5F5F5;
  --text:#212121;
  --gray:#9E9E9E;
  --err:#E53935;
  --ok:#2E7D32;
}
*{box-sizing:border-box;margin:0;padding:0;-webkit-tap-highlight-color:transparent}
body{font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;background:var(--bg);color:var(--text);line-height:1.5}
.wrap{max-width:480px;margin:0 auto;padding:0 16px}
.hidden{display:none !important}

/* 顶栏 */
.topbar{background:#fff;border-bottom:1px solid #eee}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;height:56px}
.brand{display:flex;align-items:center;gap:8px}
.logo{height:30px;width:auto;border-radius:6px}
.brand-name{font-size:20px;font-weight:700;color:var(--blue)}
.brand-sub{font-size:14px;color:var(--gray)}
.topbar-link{font-size:13px;color:var(--purple);text-decoration:none}

/* 招商 Hero */
.hero{background:linear-gradient(135deg,var(--purple),var(--purple-deep));color:#fff;padding:36px 0 30px}
.hero-tag{display:inline-block;background:rgba(255,255,255,.2);font-size:12px;padding:3px 10px;border-radius:4px;margin-bottom:12px}
.hero-title{font-size:26px;font-weight:700;margin-bottom:8px}
.hero-desc{font-size:14px;opacity:.9;max-width:90%}
.hero-stats{display:flex;justify-content:space-between;margin-top:24px}
.stat{text-align:center;flex:1}
.stat-num{font-size:20px;font-weight:700}
.stat-label{font-size:12px;opacity:.85;margin-top:2px}

/* 主卡片 */
.main{padding:24px 16px 40px}
.auth-card{background:#fff;border-radius:16px;padding:20px;box-shadow:0 2px 12px rgba(0,0,0,.06)}
.tabs{display:flex;background:#F0F0F0;border-radius:10px;padding:4px;margin-bottom:20px}
.tab{flex:1;border:0;background:transparent;padding:10px;font-size:15px;color:var(--gray);border-radius:8px;font-weight:500}
.tab.active{background:#fff;color:var(--purple);box-shadow:0 1px 3px rgba(0,0,0,.1)}

.form{display:flex;flex-direction:column;gap:14px}
.group-title{font-size:14px;font-weight:700;margin-top:6px;color:var(--text)}
.field{display:flex;flex-direction:column;gap:6px}
.field-label{font-size:13px;color:#666}
.field input{height:46px;border:1px solid #e0e0e0;border-radius:12px;padding:0 14px;font-size:15px;outline:none}
.field input:focus{border-color:var(--purple)}
.agree{display:flex;align-items:flex-start;gap:8px;font-size:12px;color:var(--gray);line-height:1.4}
.agree input{margin-top:2px}
.agree a{color:var(--purple);text-decoration:none}
.submit{height:50px;border:0;border-radius:25px;background:var(--purple);color:#fff;font-size:16px;font-weight:700;margin-top:4px;cursor:pointer;text-align:center;line-height:50px;text-decoration:none;display:block}
.submit:disabled{opacity:.6}
.hint{font-size:12px;color:var(--gray);text-align:center}

/* 上传 */
.uploads{display:flex;gap:10px}
.upload{flex:1}
.upload-box{aspect-ratio:1/1;border:1px dashed #d0d0d0;border-radius:12px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;color:var(--gray);cursor:pointer;background:#FAFAFA;overflow:hidden;position:relative}
.upload-box.has-img{border-style:solid;border-color:var(--purple)}
.upload-plus{font-size:26px;font-weight:300}
.upload-text{font-size:11px;text-align:center;padding:0 4px}
.upload-box img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}

/* 消息 */
.msg{margin-top:16px;padding:12px 14px;border-radius:10px;font-size:14px}
.msg.err{background:#FDECEA;color:var(--err)}
.msg.ok{background:#E8F5E9;color:var(--ok)}

/* 登录面板 */
.ok-badge{display:inline-block;background:#E8F5E9;color:var(--ok);font-size:13px;padding:4px 12px;border-radius:20px;font-weight:600}
.panel-title{font-size:20px;font-weight:700;margin:12px 0 6px}
.panel-info{font-size:14px;color:#444}
.panel-tip{font-size:13px;color:var(--gray);margin:10px 0 18px;line-height:1.5}
.link-btn{background:none;border:0;color:var(--gray);font-size:13px;margin-top:14px;cursor:pointer;text-decoration:underline}

/* 页脚 */
.footer{background:#fff;border-top:1px solid #eee;padding:20px 0;text-align:center;margin-top:10px}
.footer p{font-size:12px;color:var(--gray)}
.copyright{margin-top:6px}