:root{
  --paper:#F6F2E9;--card:#FCFAF3;--ink:#202A38;--ink-2:#4A5565;--ink-3:#8B8F98;
  --line:#E3DCCB;--gold:#B0853B;--gold-2:#E6D5AE;--red:#9C3A2E;--green:#3A7D44;
}
*{box-sizing:border-box;margin:0;padding:0;}
body{
  background:var(--paper);color:var(--ink);
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  font-size:15px;line-height:1.7;-webkit-font-smoothing:antialiased;
}
.serif,h1,h2,h3,.brand,.chip,.stamp{font-family:"Noto Serif SC","Songti SC",serif;}
.page{max-width:960px;margin:0 auto;padding:0 20px;}
.hidden{display:none!important;}

/* 顶栏 */
.topbar{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 0 14px;border-bottom:1px solid var(--line);
}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:1.02rem;text-decoration:none;color:var(--ink);white-space:nowrap;}
.brand-seal{
  display:inline-flex;align-items:center;justify-content:center;
  width:32px;height:32px;border:1.5px solid var(--ink);outline:1px solid var(--ink);outline-offset:2px;
  font-family:"Noto Serif SC",serif;font-size:.85rem;font-weight:700;transform:rotate(-3deg);
}
.top-right{display:flex;align-items:center;gap:14px;}
.user-name{font-size:.88rem;color:var(--ink-2);}
.points-badge{font-size:.82rem;font-weight:600;color:var(--gold);background:var(--gold-2);border:1px solid var(--line);padding:3px 10px;border-radius:20px;white-space:nowrap;}
.btn-logout{
  background:transparent;border:1px solid var(--line);padding:6px 14px;
  font-size:.82rem;color:var(--ink-2);cursor:pointer;border-radius:2px;
}
.btn-logout:hover{border-color:var(--gold);color:var(--gold);}

/* 导航 */
.nav{display:flex;gap:2px;padding:12px 0;border-bottom:1px solid var(--line);overflow-x:auto;}
.nav a{
  padding:8px 5px;font-size:.9rem;color:var(--ink-2);text-decoration:none;
  border-radius:2px;white-space:nowrap;cursor:pointer;
}
.nav a:hover{color:var(--gold);}
.nav a.active{background:var(--ink);color:var(--card);}

/* 登录页 */
.login-wrap{max-width:400px;margin:80px auto 0;padding:40px 36px;background:var(--card);border:1px solid var(--line);}
.login-wrap h1{font-size:1.4rem;font-weight:900;text-align:center;margin-bottom:8px;}
.login-wrap .sub{text-align:center;font-size:.88rem;color:var(--ink-3);margin-bottom:32px;}
.form-group{margin-bottom:18px;}
.form-group label{display:block;font-size:.85rem;color:var(--ink-2);margin-bottom:6px;}
.form-group input,.form-group select{
  width:100%;padding:10px 12px;border:1px solid var(--line);background:var(--paper);
  font-size:.95rem;color:var(--ink);border-radius:2px;font-family:inherit;
}
.form-group input:focus{outline:none;border-color:var(--gold);}
.btn-primary{
  width:100%;padding:12px;background:var(--ink);color:var(--card);
  border:none;font-size:.95rem;font-weight:500;cursor:pointer;border-radius:2px;
  margin-top:8px;
}
.btn-primary:hover{background:#33415A;}
.btn-primary:disabled{opacity:.5;cursor:not-allowed;}
.error-msg{color:var(--red);font-size:.85rem;text-align:center;margin-top:12px;min-height:1.2em;}

/* 文案卡片 */
.post-card{
  background:var(--card);border:1px solid var(--line);
  box-shadow:0 1px 0 rgba(32,42,56,.04),0 18px 40px -28px rgba(32,42,56,.35);
  padding:28px 30px 24px;margin-bottom:20px;position:relative;
}
.post-card .chip{
  display:inline-block;font-size:.78rem;font-weight:500;letter-spacing:.05em;
  color:var(--gold);background:var(--gold-2);padding:3px 10px;border-radius:2px;
}
.post-card .post-num{font-size:.78rem;color:var(--ink-3);margin-left:8px;}
.post-card.post-flash{animation:postFlash 1.8s ease-out;}
@keyframes postFlash{0%{box-shadow:0 0 0 3px var(--gold);}100%{box-shadow:0 1px 0 rgba(32,42,56,.04),0 18px 40px -28px rgba(32,42,56,.35);}}
.post-imgs{
  display:grid;gap:6px;margin-top:16px;
}
.post-imgs img{width:100%;border-radius:2px;display:block;}
.post-imgs:has(img:only-child) img{aspect-ratio:auto;}
.post-imgs:has(img:nth-child(2)){grid-template-columns:1fr 1fr;}
.post-imgs:has(img:nth-child(3)){grid-template-columns:1fr 1fr 1fr;}
.post-img-placeholder{
  width:100%;height:200px;background:var(--paper);border:1px dashed var(--line);
  display:flex;align-items:center;justify-content:center;color:var(--ink-3);font-size:.85rem;
}
.post-text{margin-top:18px;font-size:1.05rem;line-height:2.0;letter-spacing:.01em;}
.post-actions{display:flex;gap:10px;margin-top:20px;flex-wrap:wrap;}
.btn-act{
  display:inline-flex;align-items:center;gap:6px;
  padding:8px 16px;border:1px solid var(--line);background:transparent;
  font-size:.85rem;color:var(--ink-2);cursor:pointer;border-radius:2px;
  transition:all .15s ease;
}
.btn-act:hover{border-color:var(--gold);color:var(--gold);}
.btn-act.active{background:var(--gold-2);border-color:var(--gold);color:var(--gold);}
.btn-act.danger:hover{border-color:var(--red);color:var(--red);}

/* 设置页 */
.settings-section{margin-bottom:32px;}
.settings-section h2{font-size:1.1rem;font-weight:700;margin-bottom:16px;}
.settings-section h2::before{content:"◆";font-size:.6rem;color:var(--gold);margin-right:8px;}
.loan-group{margin-bottom:14px;}
.loan-group-title{font-size:.88rem;font-weight:600;color:var(--gold);margin-bottom:6px;}
.loan-group label{display:flex;align-items:center;gap:6px;font-size:.88rem;color:var(--ink-2);margin-bottom:4px;cursor:pointer;font-weight:normal;}
.loan-group input[type=checkbox]{width:auto;margin:0;}
.ratio-row{display:flex;align-items:center;gap:12px;margin-bottom:14px;}
.ratio-row label{width:80px;font-size:.9rem;color:var(--ink-2);}
.ratio-row input[type=range]{flex:1;}
.ratio-row .val{width:50px;text-align:right;font-size:.88rem;color:var(--gold);font-weight:600;}
.save-hint{margin-top:8px;font-size:.82rem;color:var(--green);min-height:1.2em;}

/* 表格 */
table{width:100%;border-collapse:collapse;font-size:.88rem;}
th,td{padding:10px 12px;text-align:left;border-bottom:1px solid var(--line);}
th{font-weight:600;color:var(--ink-2);font-size:.82rem;background:rgba(230,213,174,.2);}
tr:hover{background:rgba(230,213,174,.15);}

@media(max-width:600px){
  .topbar{gap:8px;}
  .brand{font-size:.94rem;}
  .top-right{gap:8px;}
  .user-name{white-space:nowrap;}
}

/* Toast */
.toast{
  position:fixed;left:50%;bottom:30px;transform:translate(-50%,16px);
  background:var(--ink);color:var(--card);padding:10px 22px;font-size:.88rem;
  opacity:0;pointer-events:none;transition:all .25s ease;border-radius:2px;z-index:99;
}
.toast.show{opacity:1;transform:translate(-50%,0);}

/* 加载浮窗 */
.spinner{width:34px;height:34px;border:3px solid var(--line);border-top-color:var(--gold);border-radius:50%;animation:spin .8s linear infinite;}
@keyframes spin{to{transform:rotate(360deg);}}

/* 回到顶部 */
#backToTop{
  position:fixed;right:18px;bottom:22px;width:44px;height:44px;border-radius:50%;
  background:var(--ink);color:var(--card);border:none;cursor:pointer;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 8px 20px -8px rgba(32,42,56,.55);z-index:900;
  opacity:.9;transition:opacity .2s ease, transform .2s ease;
}
#backToTop:hover{opacity:1;transform:translateY(-2px);}
#backToTop.hidden{display:none!important;}

/* 空状态 */
.empty-state{text-align:center;padding:60px 20px;color:var(--ink-3);}
.empty-state p{font-size:.95rem;}

/* 加载中 */
.loading{text-align:center;padding:40px;color:var(--ink-3);}

@media(max-width:600px){
  .page{padding:0 14px;}
  .post-card{padding:20px 16px 18px;}
  .post-text{font-size:.98rem;line-height:1.9;}
  .nav{flex-wrap:nowrap;overflow-x:auto;-webkit-overflow-scrolling:touch;gap:1px;padding:10px 0;scrollbar-width:thin;}
  .nav a{padding:5px 4px;font-size:.82rem;flex:0 0 auto;}
  .login-wrap{margin:40px auto;padding:30px 24px;}
}