:root{
  --emerald:#0E9F6E;
  --emerald-d:#0b8a5e;
  --emerald-l:#e6f7f0;
  --ink:#0f172a;
  --muted:#64748b;
  --line:#e2e8f0;
  --bg:#f6f8fa;
  --card:#ffffff;
  --red:#ef4444;
  --amber:#f59e0b;
  --shadow:0 1px 3px rgba(15,23,42,.08),0 8px 24px rgba(15,23,42,.06);
}
*{box-sizing:border-box}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;background:var(--bg);color:var(--ink);font-size:14px;line-height:1.6}
a{color:var(--emerald);text-decoration:none}
a:hover{text-decoration:underline}

/* topbar */
.topbar{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:50}
.topbar-inner{max-width:1180px;margin:0 auto;display:flex;align-items:center;gap:18px;padding:0 20px;height:58px}
.brand{font-weight:800;font-size:17px;color:var(--ink);display:flex;align-items:center;gap:9px;white-space:nowrap}
.brand-dot{width:12px;height:12px;border-radius:50%;background:var(--emerald);box-shadow:0 0 0 4px var(--emerald-l)}
.nav{display:flex;gap:6px;flex:1}
.nav a{padding:8px 12px;border-radius:8px;color:var(--muted);font-weight:600}
.nav a:hover{background:var(--emerald-l);color:var(--emerald-d);text-decoration:none}
.nav a.active{background:var(--emerald);color:#fff}
.auth-box{display:flex;align-items:center;gap:8px;white-space:nowrap}
.userchip{color:var(--ink);font-weight:600}
.userchip b{color:var(--emerald)}

.btn-primary,.btn-ghost{display:inline-block;padding:9px 16px;border-radius:9px;font-weight:700;cursor:pointer;border:1px solid transparent;font-size:14px}
.btn-primary{background:var(--emerald);color:#fff}
.btn-primary:hover{background:var(--emerald-d);text-decoration:none}
.btn-ghost{background:#fff;color:var(--emerald);border-color:var(--line)}
.btn-ghost:hover{border-color:var(--emerald);text-decoration:none}
.btn-danger{background:#fff;color:var(--red);border-color:#fecaca}
.btn-danger:hover{background:#fef2f2}
.btn-sm{padding:6px 12px;font-size:13px}

/* layout */
.container{max-width:1180px;margin:0 auto;padding:26px 20px 60px}
.footer{border-top:1px solid var(--line);color:var(--muted);font-size:13px;padding:22px 0;text-align:center}

/* flash */
.flash{padding:12px 16px;border-radius:10px;margin-bottom:18px;font-weight:600}
.flash-success{background:#ecfdf5;color:#047857;border:1px solid #a7f3d0}
.flash-error{background:#fef2f2;color:#b91c1c;border:1px solid #fecaca}
.flash-info{background:#eff6ff;color:#1d4ed8;border:1px solid #bfdbfe}

/* cards */
.card{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:22px;box-shadow:var(--shadow)}
.grid{display:grid;gap:18px}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}
@media(max-width:860px){.grid-2,.grid-3,.grid-4{grid-template-columns:1fr}.nav{display:none}}

/* headings */
h1{font-size:24px;margin:0 0 6px}
h2{font-size:18px;margin:0 0 14px}
.page-head{margin-bottom:20px}
.page-head p{color:var(--muted);margin:4px 0 0}

/* stats */
.stat{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:18px 20px;box-shadow:var(--shadow)}
.stat .n{font-size:28px;font-weight:800;color:var(--emerald)}
.stat .l{color:var(--muted);font-size:13px;margin-top:2px}

/* forms */
.form{max-width:420px}
label{display:block;font-weight:600;margin:14px 0 6px}
input[type=text],input[type=email],input[type=password],input[type=number],select{
  width:100%;padding:11px 12px;border:1px solid var(--line);border-radius:9px;font-size:14px;background:#fff;color:var(--ink)}
input:focus,select:focus{outline:none;border-color:var(--emerald);box-shadow:0 0 0 3px var(--emerald-l)}
.hint{color:var(--muted);font-size:12px;margin-top:6px}
.row{display:flex;gap:12px}.row>*{flex:1}
.center-box{max-width:440px;margin:30px auto}

/* tables */
table{width:100%;border-collapse:collapse;font-size:13px;background:#fff;border-radius:12px;overflow:hidden;box-shadow:var(--shadow)}
th,td{padding:11px 13px;text-align:left;border-bottom:1px solid var(--line)}
th{background:#f8fafc;color:var(--muted);font-weight:700;font-size:12px;text-transform:uppercase;letter-spacing:.03em}
tr:last-child td{border-bottom:0}
.tag{display:inline-block;padding:2px 9px;border-radius:999px;font-size:12px;font-weight:700}
.tag-ok{background:#ecfdf5;color:#047857}
.tag-wait{background:#fffbeb;color:#b45309}
.tag-no{background:#fef2f2;color:#b91c1c}
.tag-admin{background:#eef2ff;color:#4338ca}
.badge{background:var(--emerald-l);color:var(--emerald-d);padding:2px 8px;border-radius:6px;font-weight:700;font-size:12px}

/* swatches */
.swatches{display:flex;gap:10px;margin-top:8px}
.sw{flex:1;height:38px;border-radius:9px;border:2px solid transparent;cursor:pointer;display:flex;align-items:center;justify-content:center;font-size:12px;color:#334155;font-weight:700}
.sw.sel{border-color:var(--emerald);box-shadow:0 0 0 3px var(--emerald-l)}
.sw.white{background:#fff}.sw.blue{background:#428eda;color:#fff}.sw.lightblue{background:#5fbeff;color:#fff}.sw.red{background:#ff0000;color:#fff}

/* tool */
.tool{display:grid;grid-template-columns:360px 1fr;gap:20px}
@media(max-width:860px){.tool{grid-template-columns:1fr}}
.drop{border:2px dashed #cbd5e1;border-radius:12px;padding:34px 14px;text-align:center;color:var(--muted);cursor:pointer;background:#fbfdff;transition:.15s}
.drop:hover{border-color:var(--emerald);color:var(--emerald)}
.drop.drag{border-color:var(--emerald);background:var(--emerald-l)}
.preview-wrap{background:#fff;border:1px solid var(--line);border-radius:14px;padding:18px;box-shadow:var(--shadow);min-height:420px;display:flex;flex-direction:column;align-items:center;justify-content:center}
.preview-wrap img{max-width:100%;border:1px solid #eee;border-radius:8px;background:#f8fafc}
.placeholder{color:var(--muted);text-align:center}
.placeholder .big{font-size:42px;opacity:.4}
.controls label{margin-top:14px}
.spinner{width:22px;height:22px;border:3px solid var(--emerald-l);border-top-color:var(--emerald);border-radius:50%;animation:spin .8s linear infinite;margin:10px auto}
@keyframes spin{to{transform:rotate(360deg)}}
.mono{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:12px;background:#0f172a;color:#34d399;padding:12px;border-radius:8px;overflow:auto;word-break:break-all}
.codeblock{background:#0f172a;color:#e2e8f0;padding:14px;border-radius:10px;font-family:ui-monospace,Menlo,monospace;font-size:12.5px;overflow:auto}
.divider{height:1px;background:var(--line);margin:22px 0}