/* ===== 基础 ===== */
:root{
  --brand:#4F6BED; --brand-dark:#3B51C6; --brand-soft:#EEF1FE;
  --ink:#1F2329; --ink-2:#4E5969; --ink-3:#86909C;
  --line:#E5E6EB; --bg:#F5F6F8; --white:#fff;
  --ok:#00B42A; --warn:#FF7D00; --danger:#F53F3F;
  --radius:10px;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;
  background:var(--bg); color:var(--ink); font-size:14px; line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
a{color:var(--brand);text-decoration:none}
a:hover{opacity:.85}
h1,h2,h3,h4{margin:0;font-weight:600}

/* ===== 登录 / 空白布局 ===== */
.blank-wrap{min-height:100vh;display:flex;flex-direction:column}
.blank-main{flex:1}
.auth-box{
  max-width:400px;margin:0 auto;padding:48px 24px;
}
.auth-box .logo{text-align:center;margin-bottom:28px}
.auth-box .logo .mark{
  width:52px;height:52px;border-radius:14px;margin:0 auto 12px;
  background:linear-gradient(135deg,var(--brand),#7C5CFF);
  display:flex;align-items:center;justify-content:center;
  color:#fff;font-size:24px;font-weight:700;
}
.auth-box h1{font-size:20px;text-align:center}
.auth-box .sub{text-align:center;color:var(--ink-3);font-size:13px;margin-top:6px}
.auth-card{background:var(--white);border-radius:16px;padding:28px 24px;box-shadow:0 4px 24px rgba(0,0,0,.06);margin-top:24px}

/* ===== 表单 ===== */
.field{margin-bottom:16px}
/* 开关是 label 的另一种形态，不能按普通字段标签排版 */
.field label:not(.switch){display:block;font-size:13px;color:var(--ink-2);margin-bottom:6px;font-weight:500}
.input,.select,.textarea{
  width:100%;padding:10px 12px;border:1px solid var(--line);border-radius:8px;
  font-size:14px;font-family:inherit;color:var(--ink);background:var(--white);
  transition:border-color .15s;
}
.input:focus,.select:focus,.textarea:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px var(--brand-soft)}
.textarea{resize:vertical;min-height:72px}
.hint{font-size:12px;color:var(--ink-3);margin-top:5px}

/* ===== 按钮 ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:6px;
  padding:9px 18px;border-radius:8px;border:1px solid var(--line);
  background:var(--white);color:var(--ink);font-size:14px;cursor:pointer;
  font-family:inherit;transition:.15s;white-space:nowrap;
}
.btn:hover{border-color:#c9cdd4;background:#fafafa}
.btn:disabled{opacity:.5;cursor:not-allowed}
.btn-primary{background:var(--brand);border-color:var(--brand);color:#fff}
.btn-primary:hover{background:var(--brand-dark);border-color:var(--brand-dark)}
.btn-block{width:100%}
.btn-sm{padding:6px 12px;font-size:13px;border-radius:6px}
.btn-danger{color:var(--danger);border-color:#ffd2d2}
.btn-danger:hover{background:#fff5f5;border-color:var(--danger)}
.btn-ghost{background:transparent;border-color:transparent;color:var(--ink-2)}

/* ===== 应用外壳 ===== */
.shell{display:flex;min-height:100vh}
.sidebar{
  width:208px;flex:0 0 208px;background:var(--white);border-right:1px solid var(--line);
  display:flex;flex-direction:column;position:sticky;top:0;height:100vh;
}
.sidebar .brand{
  padding:20px 18px;display:flex;align-items:center;gap:10px;border-bottom:1px solid var(--line);
}
.sidebar .brand .mark{
  width:32px;height:32px;border-radius:9px;flex:0 0 32px;
  background:linear-gradient(135deg,var(--brand),#7C5CFF);
  display:flex;align-items:center;justify-content:center;color:#fff;font-weight:700;font-size:15px;
}
.sidebar .brand .name{font-weight:600;font-size:15px}
.nav{padding:12px 10px;flex:1;overflow-y:auto}
.nav a{
  display:flex;align-items:center;gap:9px;padding:9px 12px;border-radius:8px;
  color:var(--ink-2);font-size:14px;margin-bottom:2px;
}
.nav a:hover{background:var(--bg);opacity:1}
.nav a.active{background:var(--brand-soft);color:var(--brand);font-weight:500}
.nav .ico{width:18px;text-align:center;font-size:15px;opacity:.9}
.nav .group{font-size:12px;color:var(--ink-3);padding:14px 12px 6px;font-weight:500}
.sidebar .foot{padding:12px 14px;border-top:1px solid var(--line)}
.sidebar .foot .qbox{
  background:var(--brand-soft);border-radius:8px;padding:10px 12px;margin-bottom:10px;
}
.sidebar .foot .qbox .n{font-size:20px;font-weight:700;color:var(--brand);line-height:1.2}
.sidebar .foot .qbox .l{font-size:12px;color:var(--ink-2)}

.main{flex:1;min-width:0;display:flex;flex-direction:column}
.topbar{
  height:56px;background:var(--white);border-bottom:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;
  padding:0 24px;position:sticky;top:0;z-index:10;
}
.topbar h1{font-size:16px}
.topbar .right{display:flex;align-items:center;gap:14px;font-size:13px;color:var(--ink-2)}

/* 账号菜单：退出登录收在这里，避免在侧栏和功能菜单挨着被误点 */
.usermenu{position:relative}
.usermenu-btn{
  display:flex;align-items:center;gap:7px;background:transparent;border:1px solid transparent;
  padding:5px 9px;border-radius:8px;cursor:pointer;font-size:13px;color:var(--ink-2);
  font-family:inherit;line-height:1.4;
}
.usermenu-btn:hover{background:#F5F6FA;border-color:var(--line)}
.usermenu-btn .caret{font-size:10px;color:var(--ink-3);transition:transform .15s}
.usermenu.open .usermenu-btn{background:#F5F6FA;border-color:var(--line)}
.usermenu.open .usermenu-btn .caret{transform:rotate(180deg)}
.usermenu-drop{
  display:none;position:absolute;right:0;top:calc(100% + 6px);min-width:216px;
  background:#fff;border:1px solid var(--line);border-radius:10px;padding:6px;
  box-shadow:0 10px 28px rgba(20,26,50,.12);z-index:60;
}
.usermenu.open .usermenu-drop{display:block}
.um-row{display:flex;gap:8px;padding:7px 10px;font-size:12px;line-height:1.5}
.um-k{color:var(--ink-3);flex:0 0 30px}
.um-v{color:var(--ink);word-break:break-all}
.um-sep{height:1px;background:var(--line);margin:6px 4px}
.um-item{display:block;padding:8px 10px;border-radius:7px;font-size:13px;color:var(--ink-2)}
.um-item:hover{background:#F5F6FA;color:var(--ink)}
.um-logout{display:block;padding:8px 10px;border-radius:7px;font-size:13px;color:var(--danger)}
.um-logout:hover{background:#FFF5F5}

.content{padding:24px;flex:1}

/* ===== 卡片 ===== */
.card{background:var(--white);border-radius:var(--radius);border:1px solid var(--line);overflow:hidden}
.card-hd{padding:16px 20px;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap}
.card-hd h2{font-size:15px}
.card-bd{padding:20px}
.card-bd.tight{padding:0}

/* ===== 统计块 ===== */
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:14px;margin-bottom:20px}
.stat{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);padding:16px 18px}
.stat .l{font-size:13px;color:var(--ink-3);margin-bottom:6px}
.stat .n{font-size:26px;font-weight:700;line-height:1.2;letter-spacing:-.5px}
.stat .n.brand{color:var(--brand)}
.stat .n.ok{color:var(--ok)}
.stat .n.warn{color:var(--warn)}

/* ===== 表格 ===== */
.table{width:100%;border-collapse:collapse;font-size:13px}
.table th{
  text-align:left;padding:11px 16px;background:#FAFBFC;color:var(--ink-3);
  font-weight:500;border-bottom:1px solid var(--line);white-space:nowrap;
}
.table td{padding:12px 16px;border-bottom:1px solid #F2F3F5;vertical-align:middle}
.table tr:last-child td{border-bottom:none}
.table tr:hover td{background:#FAFBFC}
.mono{font-family:ui-monospace,Menlo,Consolas,monospace;font-size:12px}
.link-cell{max-width:320px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ===== 标签 ===== */
.tag{display:inline-block;padding:2px 9px;border-radius:20px;font-size:12px;line-height:1.6;white-space:nowrap}
.tag-gray{background:#F2F3F5;color:var(--ink-2)}
.tag-blue{background:var(--brand-soft);color:var(--brand)}
.tag-green{background:#E8FFEA;color:var(--ok)}
.tag-orange{background:#FFF7E8;color:var(--warn)}
.tag-red{background:#FFECE8;color:var(--danger)}

/* ===== 空态 ===== */
.empty{text-align:center;padding:56px 20px;color:var(--ink-3)}
.empty .ico{font-size:36px;margin-bottom:10px;opacity:.5}

/* ===== 提示条 ===== */
.alert{padding:11px 14px;border-radius:8px;font-size:13px;margin-bottom:16px;display:flex;gap:8px;align-items:flex-start}
.alert-info{background:var(--brand-soft);color:#2B3A8F}
.alert-warn{background:#FFF7E8;color:#8A5300}
.alert-danger{background:#FFECE8;color:#A1160C}
.alert-ok{background:#E8FFEA;color:#0E6B1F}

/* ===== 分页 ===== */
.pager{display:flex;gap:6px;align-items:center;justify-content:center;padding:16px}
.pager a,.pager span{
  min-width:32px;height:32px;padding:0 10px;display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--line);border-radius:6px;font-size:13px;color:var(--ink-2);background:#fff;
}
.pager .on{background:var(--brand);border-color:var(--brand);color:#fff}
.pager .disabled{opacity:.4;pointer-events:none}

/* ===== 套餐卡 ===== */
.pkgs{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:16px}
.pkg{border:1px solid var(--line);border-radius:12px;padding:20px;background:#fff;position:relative;transition:.15s;
     display:flex;flex-direction:column}
.pkg:hover{border-color:var(--brand);box-shadow:0 4px 16px rgba(79,107,237,.1)}
.pkg.hot{border-color:var(--brand);background:linear-gradient(180deg,#F8FAFF,#fff)}
.pkg .badge{
  position:absolute;top:-1px;right:-1px;background:var(--brand);color:#fff;
  font-size:11px;padding:3px 10px;border-radius:0 12px 0 10px;
}
.pkg .name{font-size:14px;color:var(--ink-2);margin-bottom:10px}
.pkg .price{font-size:30px;font-weight:700;color:var(--ink);line-height:1.1;letter-spacing:-1px}
.pkg .price small{font-size:14px;font-weight:500;margin-right:2px}
.pkg .quota{margin-top:8px;font-size:13px;color:var(--brand);font-weight:500}
.pkg .unit{font-size:12px;color:var(--ink-3);margin-top:2px}
.pkg ul{list-style:none;padding:0;margin:14px 0 16px;font-size:12px;color:var(--ink-2);flex:1}
.pkg ul li{padding:3px 0}
.pkg ul li:before{content:"·";margin-right:6px;color:var(--brand)}

/* ===== 首页 ===== */
.landing{max-width:1080px;margin:0 auto;padding:0 20px}
.hero{padding:64px 0 48px;text-align:center}
.hero h1{font-size:34px;line-height:1.3;letter-spacing:-.5px}
.hero h1 em{color:var(--brand);font-style:normal}
.hero p{color:var(--ink-2);font-size:15px;margin-top:14px}
.hero .actions{margin-top:26px;display:flex;gap:12px;justify-content:center;flex-wrap:wrap}
.hero .actions .btn{padding:11px 26px;font-size:15px}
.section{padding:32px 0}
.section h2{font-size:20px;margin-bottom:18px}
.grid3{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:16px}
.feat{background:#fff;border:1px solid var(--line);border-radius:12px;padding:20px}
.feat .ico{font-size:22px;margin-bottom:10px}
.feat h3{font-size:15px;margin-bottom:6px}
.feat p{font-size:13px;color:var(--ink-2);margin:0}
.tcards{display:grid;grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:12px}
.tcard{background:#fff;border:1px solid var(--line);border-radius:10px;padding:16px;text-align:center}
.tcard .ico{font-size:26px;margin-bottom:8px}
.tcard .n{font-size:13px;font-weight:500}
.tcard .m{font-size:12px;color:var(--ink-3);margin-top:3px}

/* ===== 复制框 ===== */
.copybox{
  display:flex;gap:8px;align-items:center;background:#F7F8FA;border:1px solid var(--line);
  border-radius:8px;padding:8px 10px;font-size:12px;font-family:ui-monospace,Menlo,monospace;
}
.copybox input{flex:1;background:none;border:none;font:inherit;color:var(--ink);outline:none;min-width:0}

/* ===== 加载 ===== */
.spinner{width:15px;height:15px;border:2px solid rgba(255,255,255,.35);border-top-color:#fff;border-radius:50%;animation:spin .7s linear infinite;display:inline-block}
@keyframes spin{to{transform:rotate(360deg)}}

/* ===== C 端错误页 ===== */
.err-page{max-width:420px;margin:0 auto;padding:80px 24px;text-align:center}
.err-page .ico{font-size:52px;margin-bottom:16px;opacity:.35}
.err-page h1{font-size:18px;margin-bottom:10px}
.err-page p{color:var(--ink-2);font-size:14px;margin:0}

/* ===== 管理端专用 ===== */
.page-head{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;margin-bottom:18px}
.page-head .desc{font-size:13px;color:var(--ink-3);margin-top:4px}
.toolbar{display:flex;gap:10px;align-items:center;flex-wrap:wrap;margin-bottom:16px}
.toolbar .input,.toolbar .select{width:auto;min-width:150px;padding:7px 11px;font-size:13px}
.toolbar .grow{flex:1}

.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:0 20px}
.form-grid .full{grid-column:1 / -1}
.form-sec{font-size:13px;font-weight:600;color:var(--ink-2);padding:16px 0 10px;border-bottom:1px solid var(--line);margin-bottom:16px}
.form-sec:first-child{padding-top:0}
.form-actions{display:flex;gap:10px;justify-content:flex-end;padding-top:16px;border-top:1px solid var(--line);margin-top:8px}

.thumb{width:44px;height:44px;border-radius:8px;object-fit:cover;background:#F2F3F5;display:block}
.thumb-box{width:88px;height:88px;border-radius:10px;border:1px dashed var(--line);display:flex;
  align-items:center;justify-content:center;overflow:hidden;background:#FAFBFC;cursor:pointer;position:relative}
.thumb-box img{width:100%;height:100%;object-fit:cover}
.thumb-box .ph{font-size:22px;color:var(--ink-3)}

.switch{position:relative;display:inline-flex;align-items:center;gap:8px;cursor:pointer;user-select:none;font-size:13px;color:var(--ink-2)}
/* .field label 的 display:block 会把开关压扁，这里按字段内嵌场景纠正回来 */
.field > label.switch{display:inline-flex;font-weight:400;margin-bottom:0}
.switch input{position:absolute;opacity:0;width:0;height:0}
.switch .track{width:38px;min-width:38px;height:22px;border-radius:22px;background:#D8DAE0;transition:.18s;flex:0 0 38px}
.switch .track:after{content:"";display:block;width:18px;height:18px;border-radius:50%;background:#fff;
  margin:2px;transition:.18s;box-shadow:0 1px 3px rgba(0,0,0,.2)}
.switch input:checked + .track{background:var(--ok)}
.switch input:checked + .track:after{transform:translateX(16px)}

.row-actions{display:flex;gap:6px;flex-wrap:wrap}
/* 表格里的操作按钮不换行，否则列被挤窄时按钮会竖着叠起来 */
.table .row-actions{flex-wrap:nowrap}
.table th.col-act,.table td.col-act{white-space:nowrap}
.dot{display:inline-block;width:7px;height:7px;border-radius:50%;margin-right:6px;vertical-align:middle}
.bar-mini{height:6px;border-radius:6px;background:#EDEEF2;overflow:hidden;min-width:60px}
.bar-mini i{display:block;height:100%;background:var(--brand);border-radius:6px}

@media (max-width:768px){
  .form-grid{grid-template-columns:1fr}
  .form-grid .full{grid-column:auto}
  .content{padding-bottom:96px}
  /* 管理端的表格在窄屏横向滚动，不要撑破整个页面 */
  .card-bd.tight{overflow-x:auto;-webkit-overflow-scrolling:touch}
  .card-bd.tight .table{min-width:620px}
}

/* ===== 响应式 ===== */
@media (max-width:768px){
  .shell{display:block}
  .sidebar{
    position:fixed;left:0;bottom:0;top:auto;height:auto;width:100%;flex:none;
    border-right:none;border-top:1px solid var(--line);z-index:50;
  }
  .sidebar .brand,.sidebar .foot,.nav .group{display:none}
  .nav{display:flex;padding:6px 8px;overflow-x:auto;gap:2px}
  .nav a{flex-direction:column;gap:2px;font-size:11px;padding:7px 10px;min-width:62px;text-align:center}
  .nav .ico{font-size:17px}
  .content{padding:14px 14px 84px}
  .topbar{padding:0 14px}
  .hero{padding:40px 0 28px}
  .hero h1{font-size:25px}
  .stats{grid-template-columns:repeat(2,1fr);gap:10px}
  .stat .n{font-size:21px}
  .table th,.table td{padding:9px 10px}
  .link-cell{max-width:150px}
}