:root{
  --bg:#f5f7fb; --surface:#fff; --ink:#0f172a; --muted:#475569; --line:#e7ecf3;
  --pri:#2f5bea; --pri-d:#1d3fb0; --accent:#7c3aed; --teal:#0d9488; --orange:#d97706;
  --red:#dc2626; --green:#16a34a; --side:#0f1b34; --side2:#16223f;
  --r:14px; --sh:0 1px 3px rgba(15,23,42,.06),0 8px 24px rgba(15,23,42,.06);
}
*{box-sizing:border-box}
html,body{margin:0;height:100%}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"PingFang SC","Microsoft YaHei",sans-serif;background:var(--bg);color:var(--ink);line-height:1.6;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
.wrap{max-width:1120px;margin:0 auto;padding:0 20px}
.sm{font-size:13px}.muted{color:var(--muted)}
.center{text-align:center}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.tag{display:inline-flex;align-items:center;gap:4px;font-size:11.5px;font-weight:600;padding:2px 8px;border-radius:999px;background:#eef2f7;color:#475569;white-space:nowrap}
.tag.green{background:#dcfce7;color:#15803d}.tag.red{background:#fee2e2;color:#b91c1c}
.tag.blue{background:#dbeafe;color:#1d4ed8}.tag.orange{background:#ffedd5;color:#c2410c}
.tag.purple{background:#ede9fe;color:#6d28d9}.tag.teal{background:#ccfbf1;color:#0f766e}.tag.gray{background:#eef2f7;color:#64748b}
.mono{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace}

/* ---------- 登录屏 ---------- */
.login{height:100dvh;display:grid;place-items:center;background:linear-gradient(135deg,#0f1b34,#1d2b54);padding:16px}
.login .card{background:#fff;border-radius:18px;box-shadow:0 20px 60px rgba(0,0,0,.3);width:100%;max-width:400px;padding:34px}
.login h1{margin:0 0 4px;font-size:22px;display:flex;align-items:center;gap:10px}
.login h1 .dot{width:30px;height:30px;border-radius:9px;background:linear-gradient(135deg,var(--pri),var(--accent));color:#fff;display:grid;place-items:center;font-size:15px}
.login .sub{color:var(--muted);font-size:13px;margin-bottom:20px}
.login form{display:flex;flex-direction:column;gap:12px}
.login input{padding:12px 14px;border:1px solid var(--line);border-radius:10px;font-size:14px;outline:none}
.login input:focus{border-color:var(--pri);box-shadow:0 0 0 3px rgba(47,91,234,.18);outline:none}
.login .tabs{display:flex;gap:6px;background:#f1f5f9;padding:4px;border-radius:10px;margin-bottom:16px}
.login .tabs button{flex:1;border:none;background:none;padding:9px;border-radius:8px;font-weight:700;cursor:pointer;color:var(--muted)}
.login .tabs button.active{background:#fff;color:var(--pri);box-shadow:var(--sh)}
.login .msg{font-size:13px;font-weight:600;min-height:18px}
.login .msg.err{color:var(--red)}.login .msg.ok{color:var(--green)}
.login .back{display:block;text-align:center;margin-top:16px;font-size:13px;color:var(--muted)}

/* ---------- 应用骨架 ---------- */
.app{display:flex;min-height:100dvh}
.side{width:228px;background:var(--side);color:#cbd5e1;display:flex;flex-direction:column;position:sticky;top:0;height:100dvh;flex-shrink:0}
.side .brand{padding:18px 18px;display:flex;align-items:center;gap:10px;color:#fff;font-weight:800;font-size:17px;border-bottom:1px solid rgba(255,255,255,.08)}
.side .brand .dot{width:28px;height:28px;border-radius:8px;background:linear-gradient(135deg,var(--pri),var(--accent));display:grid;place-items:center;font-size:14px}
.side nav{flex:1;overflow-y:auto;padding:10px}
.side nav .grp{font-size:11px;letter-spacing:.06em;text-transform:uppercase;color:#64748b;padding:14px 12px 6px}
.side nav a{display:flex;align-items:center;gap:10px;padding:9px 12px;border-radius:9px;color:#cbd5e1;font-size:14px;font-weight:500;cursor:pointer}
.side nav a:hover{background:var(--side2);color:#fff}
.side nav a.active{background:linear-gradient(135deg,var(--pri),var(--accent));color:#fff;font-weight:600}
.side nav a .ic{width:18px;text-align:center}
.main{flex:1;display:flex;flex-direction:column;min-width:0}
.topbar{height:62px;background:rgba(255,255,255,.9);backdrop-filter:blur(8px);border-bottom:1px solid var(--line);display:flex;align-items:center;gap:14px;padding:0 22px;position:sticky;top:0;z-index:20}
.topbar h2{margin:0;font-size:17px}
.topbar .spacer{margin-left:auto}
.topbar .who{display:flex;align-items:center;gap:9px}
.topbar .who .av{width:32px;height:32px;border-radius:9px;background:linear-gradient(135deg,var(--pri),var(--accent));color:#fff;display:grid;place-items:center;font-weight:800;font-size:14px}
.content{padding:22px;flex:1}
.crumb{font-size:12.5px;color:var(--muted);margin-bottom:4px}
@media(max-width:860px){.side{position:fixed;left:0;top:0;z-index:100;transform:translateX(-100%);transition:.2s}.side.open{transform:none}.topbar .menu-btn{display:inline-flex}}

/* ---------- 卡片/网格 ---------- */
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:18px;box-shadow:var(--sh)}
.card h3{margin:0 0 12px;font-size:16px}
.grid{display:grid;gap:16px}.g2{grid-template-columns:1fr 1fr}.g3{grid-template-columns:repeat(3,1fr)}.g4{grid-template-columns:repeat(4,1fr)}
@media(max-width:900px){.g3,.g4{grid-template-columns:1fr 1fr}}
@media(max-width:640px){.g2,.g3,.g4{grid-template-columns:1fr}}
.row{display:flex;gap:12px;flex-wrap:wrap;align-items:center}
.mt8{margin-top:8px}.mt12{margin-top:12px}.mt16{margin-top:16px}.mt24{margin-top:24px}
.quote{color:var(--muted);font-size:13px;font-style:italic}

/* KPI */
.kpis{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
@media(max-width:760px){.kpis{grid-template-columns:1fr 1fr}}
.kpi{background:#fff;border:1px solid var(--line);border-radius:12px;padding:16px}
.kpi .v{font-size:26px;font-weight:800}.kpi .l{color:var(--muted);font-size:12.5px;margin-top:2px}

/* 按钮 */
.btn{border:1px solid var(--line);background:#fff;color:var(--ink);padding:9px 15px;border-radius:10px;font-weight:600;cursor:pointer;font-size:14px;transition:.15s}
.btn:hover{box-shadow:var(--sh)}.btn.primary{background:var(--pri);border-color:var(--pri);color:#fff}
.btn.primary:hover{background:var(--pri-d)}.btn.ghost{background:transparent}
.btn:disabled{opacity:.6;cursor:default}.btn.lg{padding:12px 24px;font-size:15px}
.btn.sm{padding:6px 11px;font-size:13px}.btn.xs{padding:4px 9px;font-size:12px;border-radius:8px}
.btn.danger{color:var(--red);border-color:#fecaca}.btn.block{width:100%;justify-content:center;display:flex}

/* 表单 */
.field{display:flex;flex-direction:column;gap:6px;margin-bottom:12px}
.field label{font-size:13px;font-weight:600;color:#334155}
.field input,.field select,.field textarea{padding:10px 12px;border:1px solid var(--line);border-radius:10px;font-size:14px;outline:none;font-family:inherit}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--pri);box-shadow:0 0 0 3px rgba(47,91,234,.15);outline:none}
.field textarea{min-height:84px;resize:vertical}
.form-2{display:grid;grid-template-columns:1fr 1fr;gap:0 16px}
@media(max-width:640px){.form-2{grid-template-columns:1fr}}

/* 表格 */
.tb{width:100%;border-collapse:collapse;font-size:13.5px}
.tb th,.tb td{padding:10px 12px;text-align:left;border-bottom:1px solid var(--line);vertical-align:top}
.tb th{font-size:12px;color:var(--muted);text-transform:uppercase;letter-spacing:.03em;background:#fafbfd}
.tb tr:hover td{background:#fafbff}.tb .num{text-align:right}.tb tr.self{background:#eff6ff}
.tb .acts button{margin-right:6px}
.pager{display:flex;gap:6px;align-items:center;margin-top:14px}
.pager button{min-width:34px}

/* 条形/进度 */
.bars{display:flex;flex-direction:column;gap:8px}
.bar-row{display:flex;align-items:center;gap:10px;font-size:13px}
.bar-row .nm{width:96px;flex-shrink:0;color:#475569;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.bar-row .tr{flex:1;background:#eef2f7;border-radius:6px;height:14px;overflow:hidden}
.bar-row .tr i{display:block;height:100%;border-radius:6px}
.bar-row .vl{width:54px;text-align:right;font-weight:600;color:#334155;flex-shrink:0}
.mini-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;text-align:center}
.mini{background:#f8fafc;border:1px solid var(--line);border-radius:10px;padding:12px}
.mini .v{font-size:22px;font-weight:800}.mini .l{font-size:12px;color:var(--muted)}

/* 工具结果 */
.tool .hint{font-size:12.5px;color:var(--muted);margin:0 0 10px}
.ta{width:100%;padding:12px 14px;border:1px solid var(--line);border-radius:10px;font-size:14px;outline:none;font-family:inherit;resize:vertical}
.ta:focus{border-color:var(--pri)}
.samples{display:flex;gap:8px;margin-top:8px;flex-wrap:wrap}
.result{margin-top:16px;display:none}.result.show{display:block}
.finding{border:1px solid var(--line);border-radius:10px;padding:12px;margin-bottom:8px}
.finding .ft{display:flex;gap:6px;align-items:center;flex-wrap:wrap;margin-bottom:4px}
.mt4{margin-top:4px}

/* 弹窗 */
.mask{position:fixed;inset:0;background:rgba(15,23,42,.45);display:grid;place-items:center;z-index:200;padding:16px}
.modal{background:#fff;border-radius:16px;box-shadow:0 20px 60px rgba(0,0,0,.25);max-width:560px;width:100%;padding:24px;max-height:88vh;overflow:auto;position:relative}
.modal.wide{max-width:960px}
.modal .x{position:absolute;top:12px;right:14px;border:none;background:none;font-size:24px;color:var(--muted);cursor:pointer;line-height:1}
.modal h3{margin:0 0 14px;font-size:18px}
.modal .actions{display:flex;gap:10px;justify-content:flex-end;margin-top:18px}

/* tabs */
.tabs2{display:flex;gap:4px;border-bottom:1px solid var(--line);margin-bottom:16px;flex-wrap:wrap}
.tabs2 button{border:none;background:none;padding:9px 14px;font-weight:600;color:var(--muted);cursor:pointer;border-bottom:2px solid transparent;font-size:14px}
.tabs2 button.active{color:var(--pri);border-bottom-color:var(--pri)}

/* 套餐卡 */
.price{position:relative;background:#fff;border:1px solid var(--line);border-radius:16px;padding:22px;display:flex;flex-direction:column;box-shadow:var(--sh)}
.price.hot{border-color:var(--pri);box-shadow:0 10px 30px rgba(47,91,234,.18)}
.price .ribbon{position:absolute;top:-12px;left:50%;transform:translateX(-50%);background:linear-gradient(135deg,var(--pri),var(--accent));color:#fff;font-size:12px;font-weight:700;padding:4px 14px;border-radius:999px}
.price h3{margin:0 0 2px;font-size:19px}.price .tl{color:var(--muted);font-size:13px;margin-bottom:8px}
.price .pv{display:flex;align-items:baseline;gap:4px}.price .pv b{font-size:32px;font-weight:800}
.price .pv .per{color:var(--muted);font-size:13px}
.price ul{list-style:none;padding:0;margin:14px 0;flex:1}.price li{padding:7px 0 7px 22px;position:relative;font-size:13.5px;border-top:1px dashed var(--line)}
.price li:first-child{border-top:none}.price li:before{content:"✓";position:absolute;left:0;top:7px;color:var(--green);font-weight:800}

/* toast */
.toasts{position:fixed;right:16px;bottom:16px;z-index:300;display:flex;flex-direction:column;gap:8px}
.toasts .t{padding:10px 14px;font-size:13px;box-shadow:var(--sh);background:#fff;border-radius:10px}
.skeleton{height:14px;border-radius:7px;background:linear-gradient(90deg,#eef2f7 25%,#e2e8f0 37%,#eef2f7 63%);background-size:400% 100%;animation:sk 1.2s ease infinite;margin:8px 0}
@keyframes sk{0%{background-position:100% 0}100%{background-position:-100% 0}}
.empty{text-align:center;color:var(--muted);padding:34px 0}
.code{font-family:ui-monospace,Menlo,Consolas,monospace;font-size:12.5px;background:#f8fafc;border:1px solid var(--line);border-radius:8px;padding:10px;width:100%;color:#334155}

/* 无障碍：尊重「减少动效」系统偏好 */
@media (prefers-reduced-motion: reduce){
  *{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important;scroll-behavior:auto!important}
}