*{box-sizing:border-box;margin:0;padding:0}
html,body{width:100%}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"PingFang SC","Microsoft YaHei",sans-serif;background:#f7f7f8;color:#1f1f1f;min-height:100vh}
a{color:#111;text-decoration:none}
a:hover{text-decoration:none}
img{max-width:100%;vertical-align:middle}
button,input,select,textarea{font-family:inherit}

/* ============ 登录/安装/更新 ============ */
.center-page{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:20px;background:#f7f7f8}
.auth-card{background:#fff;border:1px solid #e5e5e5;border-radius:8px;padding:28px;width:460px;max-width:96vw}
.auth-card h2{font-size:20px;margin-bottom:16px}
.auth-card h3{font-size:14px;margin:14px 0 10px;color:#333}
.auth-card hr{border:none;border-top:1px solid #eee;margin:16px 0}
.field{margin-bottom:13px}
.field label{display:block;font-size:13px;font-weight:500;color:#333;margin-bottom:5px}
.field input[type=text],.field input[type=password],.field input[type=number],.field input[type=url],.field input[type=email],.field input[type=datetime-local],.field select,.field textarea{padding:8px 10px;border:1px solid #d0d0d0;border-radius:6px;font-size:13px;outline:none;width:100%;background:#fff;color:#111}
.field input:focus,.field select:focus,.field textarea:focus{border-color:#111;box-shadow:0 0 0 2px rgba(17,17,17,.08)}
.field textarea{min-height:70px;resize:vertical}
.field .hint{font-size:12px;color:#999;margin-top:4px;line-height:1.5}
.field-inline{display:flex;align-items:center;gap:8px}
.field-inline input[type=checkbox]{width:auto}
.row{display:flex;gap:10px;flex-wrap:wrap;align-items:flex-end}
.row .field{flex:1;min-width:140px}
.btn{background:#111;color:#fff;border:1px solid #111;border-radius:6px;padding:8px 14px;font-size:13px;cursor:pointer;display:inline-block;text-decoration:none;line-height:1.4}
.btn:hover{background:#333;color:#fff}
.btn-red{background:#fff;color:#dc2626;border:1px solid #e5e5e5;border-radius:6px;padding:7px 12px;font-size:13px;cursor:pointer;display:inline-block;line-height:1.4}
.btn-red:hover{background:#fef2f2}
.btn-gray{background:#fff;color:#333;border:1px solid #d5d5d5;border-radius:6px;padding:7px 12px;font-size:13px;cursor:pointer;display:inline-block;line-height:1.4}
.btn-gray:hover{background:#f5f5f5}
.btn-sm{padding:5px 9px;font-size:12px}
.msg{padding:10px 14px;border-radius:6px;margin-bottom:14px;font-size:13px;border:1px solid #e5e5e5;background:#f0f0f0;color:#111}
.msg.success{background:#ecfdf5;color:#047857;border-color:#a7f3d0}
.msg.error{background:#fef2f2;color:#b91c1c;border-color:#fecaca}
.muted{color:#777;font-size:13px}
.mono{font-family:Consolas,Monaco,monospace}

/* ============ 后台 ============ */
body.admin-body{display:flex;background:#f7f7f8}
.sidebar{width:210px;background:#fff;border-right:1px solid #e5e5e5;position:fixed;top:0;bottom:0;left:0;z-index:20;display:flex;flex-direction:column;overflow-y:auto}
.sidebar .brand{font-size:16px;font-weight:700;color:#111;padding:20px;border-bottom:1px solid #e5e5e5;line-height:1.4}
.sidebar .brand small{display:block;font-size:11px;color:#999;font-weight:400;margin-top:3px}
.sidebar a{color:#444;padding:11px 20px;display:block;font-size:14px;border-left:2px solid transparent}
.sidebar a:hover{background:#f5f5f5;color:#111}
.sidebar a.active{background:#f0f0f0;color:#111;border-left-color:#111;font-weight:500}
.sidebar .side-gap{flex:1}
.sidebar .side-out{color:#999}
.main{margin-left:210px;flex:1;padding:20px;min-width:0}
.topbar{background:#fff;border:1px solid #e5e5e5;border-radius:8px;padding:13px 18px;display:flex;align-items:center;margin-bottom:18px;gap:10px}
.topbar .title{font-size:16px;font-weight:600}
.topbar .right{margin-left:auto;color:#888;font-size:12px}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(170px,1fr));gap:12px;margin-bottom:18px}
.stat{background:#fff;border:1px solid #e5e5e5;border-radius:8px;padding:16px}
.stat .num{font-size:25px;font-weight:700}
.stat .label{color:#888;font-size:12px;margin-top:4px}
.card{background:#fff;border:1px solid #e5e5e5;border-radius:8px;padding:18px;margin-bottom:18px}
.card h3{font-size:15px;font-weight:600;margin-bottom:12px;display:flex;align-items:center;gap:8px}
.card h3 .sub{margin-left:auto;font-size:12px;color:#999;font-weight:400}
.card .section-tip{font-size:12px;color:#999;line-height:1.7;margin-bottom:12px}
.table-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch;margin-bottom:4px}
table{width:100%;border-collapse:collapse;font-size:13px;min-width:760px}
th,td{padding:10px 12px;border-bottom:1px solid #ececec;text-align:left;vertical-align:middle}
th{background:#fafafa;color:#555;font-weight:500;white-space:nowrap}
tr:hover td{background:#fafafa}
.tag{display:inline-block;padding:2px 8px;border-radius:999px;font-size:11px;font-weight:600;white-space:nowrap}
.tag-on{background:#ecfdf5;color:#047857;border:1px solid #a7f3d0}
.tag-off{background:#f5f5f5;color:#888;border:1px solid #e5e5e5}
.tag-blue{background:#eff6ff;color:#1d4ed8;border:1px solid #bfdbfe}
.btn-group{display:flex;gap:5px;flex-wrap:wrap;align-items:center}
.color-row{display:flex;gap:8px;align-items:center}
.color-row input[type=color]{width:44px;height:34px;padding:2px;border:1px solid #d0d0d0;border-radius:6px;background:#fff;cursor:pointer;flex:0 0 auto}
.color-row input[type=text]{flex:1}
.switch{display:inline-flex;align-items:center;gap:7px;font-size:13px;color:#333;cursor:pointer}
.switch input{width:auto}
.quick-actions{display:flex;gap:10px;flex-wrap:wrap}
.preview-toolbar{display:flex;gap:8px;flex-wrap:wrap;align-items:center;margin-bottom:14px}
.preview-toolbar .btn-gray.active{background:#111;color:#fff;border-color:#111}
.preview-stage{background:#e9e9e9;border:1px solid #e5e5e5;border-radius:8px;padding:18px;overflow:auto;display:flex;justify-content:center}
.preview-frame{background:#fff;border:1px solid #ddd;border-radius:0;width:375px;height:76vh;min-height:520px;max-width:100%;box-shadow:0 8px 30px rgba(0,0,0,.08)}
.bar{height:8px;background:#f0f0f0;border-radius:0;overflow:hidden;min-width:80px}
.bar i{display:block;height:100%;background:#111}
.help-list{font-size:13px;color:#666;line-height:1.9;padding-left:18px}
.help-list code{background:#f5f5f5;padding:1px 5px;border-radius:4px;font-size:12px}

/* ============ 前台导航页 ============ */
body.nav-body{background:var(--page-bg,#ffffff);min-height:100vh}
.nav-page{max-width:var(--content-width,480px);width:100%;min-height:100vh;margin-left:auto;margin-right:auto;padding:var(--top-padding,24px) 14px var(--bottom-padding,40px);background:var(--panel-bg,#ffffff)}
.nav-page.align-left{margin-left:0;margin-right:auto}
.nav-page.align-right{margin-left:auto;margin-right:0}
.nav-page.align-center{margin-left:auto;margin-right:auto}
.nav-head{display:flex;align-items:center;gap:12px;margin-bottom:18px}
.nav-head--center{justify-content:center;text-align:center}
.nav-logo{width:var(--logo-size,48px);height:var(--logo-size,48px);object-fit:cover;border:1px solid var(--button-border-color,#e5e5e5);background:#fff;flex:0 0 auto;border-radius:var(--logo-radius,0)}
.nav-head-text{min-width:0}
.nav-title{font-size:22px;font-weight:700;color:#111;line-height:1.3;word-break:break-all}
.nav-subtitle{font-size:13px;color:#888;margin-top:3px;line-height:1.5;word-break:break-all}
.nav-announcement{background:#fff8e6;border:1px solid #ffe3a3;color:#8a5a00;font-size:13px;line-height:1.7;padding:9px 12px;margin-bottom:14px;word-break:break-all}
.nav-search{display:flex;gap:8px;margin-bottom:18px}
.nav-search input{flex:1;min-width:0;padding:10px 12px;border:1px solid var(--button-border-color,#e5e5e5);border-radius:var(--button-radius,0);font-size:14px;outline:none;background:#fff;color:#111}
.nav-search input:focus{border-color:#111}
.nav-group{margin-bottom:22px}
.nav-group-head{margin-bottom:10px;text-align:var(--group-align,left)}
.nav-group-title{font-size:var(--group-title-size,16px);font-weight:700;color:#111}
.nav-group-desc{font-size:12px;color:#999;margin-top:3px;line-height:1.5}
.nav-grid{display:grid;grid-template-columns:repeat(var(--columns,2),minmax(0,1fr));gap:var(--button-gap,12px);justify-content:var(--grid-justify,stretch)}
.nav-grid--auto{display:flex;flex-wrap:wrap;justify-content:var(--grid-justify,center)}
.nav-grid--fixed{display:flex;flex-wrap:wrap;justify-content:var(--grid-justify,center)}
.nav-btn{display:flex;align-items:center;gap:10px;min-height:var(--button-height,60px);padding:10px 12px;background:var(--btn-bg,var(--button-bg,#f7f7f8));color:var(--btn-color,var(--button-text-color,#111111));border:var(--button-border-width,1px) solid var(--btn-border,var(--button-border-color,#e5e5e5));border-radius:var(--button-radius,0);text-align:var(--btn-text-align,left);box-shadow:var(--button-shadow-css,0 0 0 rgba(0,0,0,0));transition:background .15s,color .15s,border-color .15s;overflow:hidden;position:relative;text-decoration:none}
.nav-btn:hover{background:var(--button-hover-bg,#ffffff);color:var(--button-hover-text,#111111);border-color:#bbb;text-decoration:none}
.nav-btn.is-empty{cursor:default;opacity:.65}
.nav-grid--auto .nav-btn{width:auto;min-width:132px}
.nav-grid--fixed .nav-btn{width:var(--button-fixed-width,150px)}
.nav-btn--icon-top{flex-direction:column;text-align:center;justify-content:center;gap:5px}
.nav-btn--icon-right{flex-direction:row-reverse;text-align:right}
.nav-icon{width:var(--icon-size,26px);height:var(--icon-size,26px);flex:0 0 auto;display:inline-flex;align-items:center;justify-content:center;font-size:calc(var(--icon-size,26px) * .78);line-height:1;background:var(--btn-icon-bg,transparent);border-radius:var(--icon-radius,0);overflow:hidden}
.nav-icon img{width:100%;height:100%;object-fit:cover;display:block}
.nav-text{min-width:0;flex:1;display:flex;flex-direction:column;justify-content:center;gap:2px}
.nav-btn--icon-top .nav-text{flex:0 1 auto;align-items:center}
.nav-btn--icon-top .nav-name{justify-content:center}
.nav-btn--icon-right .nav-text{align-items:flex-end}
.nav-btn--icon-right .nav-name{justify-content:flex-end}
.nav-name{font-size:var(--title-size,15px);font-weight:600;line-height:1.35;word-break:break-all;display:flex;align-items:center;gap:5px;flex-wrap:wrap;justify-content:inherit}
.nav-desc{font-size:var(--subtitle-size,12px);color:var(--subtitle-color,#888888);line-height:1.45;word-break:break-all}
.nav-badge{display:inline-block;font-size:10px;line-height:1;padding:3px 5px;background:var(--badge-bg,#ff3b30);color:var(--badge-color,#ffffff);border-radius:0;font-weight:600;white-space:nowrap}
.nav-footer{margin-top:30px;text-align:center;font-size:12px;color:#aaa;line-height:1.8;word-break:break-all}
.nav-footer a{color:#999}
.nav-empty{text-align:center;color:#aaa;font-size:13px;padding:40px 10px}

@media (max-width:520px){
    .nav-page{padding-left:12px;padding-right:12px}
    .nav-title{font-size:20px}
    .nav-head{gap:10px}
    .nav-logo{width:var(--logo-size,42px);height:var(--logo-size,42px)}
}
@media (max-width:800px){
    body.admin-body{display:block}
    .sidebar{position:relative;width:100%;display:flex;flex-wrap:wrap;border-right:none;border-bottom:1px solid #e5e5e5;overflow:visible}
    .sidebar .brand{width:100%;padding:12px 16px;border-bottom:none}
    .sidebar a{flex:1;text-align:center;padding:10px 6px;font-size:12px;border-left:none}
    .sidebar a.active{border-left:none;border-bottom:2px solid #111}
    .sidebar .side-gap{display:none}
    .main{margin-left:0;padding:12px}
}