:root{
  --bg:#f4f4f1;--paper:#fbfbf9;--ink:#0b0c0e;--soft:#5f6368;--muted:#8b8e92;
  --line:rgba(11,12,14,.12);--line-soft:rgba(11,12,14,.07);
  --ease:cubic-bezier(.16,1,.3,1);
  --ok:#1f6b4a;--warn:#8a5a1f;--bad:#8a2d2d;
}
*{box-sizing:border-box}
html,body{margin:0;min-height:100%;background:var(--bg);color:var(--ink)}
body{font-family:"Microsoft YaHei","PingFang SC","Hiragino Sans GB",sans-serif;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
a{color:inherit;text-decoration:none}
button,input,textarea,select{font:inherit;color:inherit}
button{cursor:pointer}
img{max-width:100%;display:block}

.topbar{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:22px 42px;border-bottom:1px solid var(--line-soft);background:rgba(244,244,241,.86);backdrop-filter:blur(18px);position:sticky;top:0;z-index:10}
.brand{display:flex;align-items:center;gap:14px;min-width:0}
.brand img{width:104px;height:auto;filter:contrast(1.06)}
.brand small{font:8px/1.7 Consolas,monospace;letter-spacing:.28em;color:var(--muted);white-space:nowrap}
.nav{display:flex;align-items:center;gap:18px;font:10px/1 Consolas,monospace;letter-spacing:.18em;color:var(--soft)}
.nav a:hover{color:var(--ink)}
.nav .back{color:var(--muted)}

.shell{max-width:1200px;margin:0 auto;padding:44px 32px 70px}
.kicker{font:9px/1 Consolas,monospace;letter-spacing:.3em;color:var(--muted);display:flex;align-items:center;gap:10px}
.kicker::before{content:"";width:26px;height:1px;background:var(--ink);opacity:.55}
h1{font-size:46px;letter-spacing:-.05em;line-height:1.16;margin:16px 0 10px;font-weight:700}
h2{font-size:24px;letter-spacing:-.035em;line-height:1.3;margin:0 0 10px}
h3{font-size:15px;margin:0 0 6px}
p{line-height:1.8;color:var(--soft);margin:0}
.lede{max-width:620px;color:var(--soft);font-size:14px}
.muted{color:var(--muted)}
.mono{font-family:Consolas,monospace;letter-spacing:.04em}

.panel{background:var(--paper);border:1px solid var(--line-soft);border-radius:18px;box-shadow:0 18px 50px rgba(11,12,14,.045)}
.pad{padding:26px}
.hr{height:1px;background:var(--line-soft);margin:22px 0}
.row{display:flex;align-items:center;justify-content:space-between;gap:16px}
.stack{display:grid;gap:12px}

.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:1px solid var(--ink);background:var(--ink);color:#fff;padding:11px 18px;border-radius:999px;font-size:12px;letter-spacing:.04em;transition:transform .25s var(--ease),opacity .2s,background .2s}
.btn:hover{transform:translateY(-1px);opacity:.88}
.btn:disabled{opacity:.45;cursor:not-allowed;transform:none}
.btn.ghost{background:transparent;color:var(--ink)}
.btn.soft{background:#e9e9e5;border-color:transparent;color:var(--ink)}
.btn.small{padding:8px 13px;font-size:11px}
.btn.danger{border-color:var(--bad);color:var(--bad);background:transparent}

input[type=text],input[type=email],input[type=password],input[type=date],input[type=tel],textarea,select{width:100%;background:#fff;border:1px solid rgba(11,12,14,.14);border-radius:10px;padding:11px 12px;outline:none;font-size:13px;transition:border .2s,box-shadow .2s}
input:focus,textarea:focus,select:focus{border-color:rgba(11,12,14,.45);box-shadow:0 0 0 3px rgba(11,12,14,.06)}
textarea{min-height:100px;resize:vertical;line-height:1.7}
label.field{display:grid;gap:7px;font:10px/1 Consolas,monospace;letter-spacing:.15em;color:var(--soft)}
label.field span{color:var(--muted)}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.form-grid .full{grid-column:1/-1}
.error{color:var(--bad);font-size:12px;line-height:1.6;min-height:18px}
.hint{font-size:11px;line-height:1.7;color:var(--muted)}
.note{background:#f2f2ee;border-left:2px solid var(--ink);padding:12px 14px;border-radius:0 8px 8px 0;font-size:12px;line-height:1.75;color:var(--soft)}

.auth-wrap{display:grid;grid-template-columns:1fr 420px;gap:56px;align-items:start;margin-top:28px}
.auth-card{background:var(--paper);border:1px solid var(--line-soft);border-radius:18px;padding:26px;box-shadow:0 20px 60px rgba(11,12,14,.06)}
.auth-tabs{display:flex;gap:0;border-bottom:1px solid var(--line-soft);margin:0 0 20px}
.auth-tabs button{padding:10px 2px;margin-right:20px;border:0;background:none;color:var(--muted);font-size:12px;border-bottom:1px solid transparent}
.auth-tabs button.on{color:var(--ink);border-bottom-color:var(--ink)}
.auth-card .btn{width:100%;margin-top:16px}
.auth-points{display:grid;gap:12px;margin-top:26px}
.auth-point{display:flex;gap:10px;align-items:flex-start;font-size:12px;line-height:1.7;color:var(--soft)}
.auth-point i{width:6px;height:6px;border-radius:50%;background:var(--ink);margin-top:6px;flex:0 0 auto}

.status-pill{display:inline-flex;align-items:center;gap:6px;border:1px solid var(--line);border-radius:999px;padding:5px 9px;font:9px/1 Consolas,monospace;letter-spacing:.1em;white-space:nowrap}
.status-pill::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--ink)}
.status-pill.ok{color:var(--ok);border-color:rgba(31,107,74,.24)}.status-pill.ok::before{background:var(--ok)}
.status-pill.warn{color:var(--warn);border-color:rgba(138,90,31,.24)}.status-pill.warn::before{background:var(--warn)}
.status-pill.bad{color:var(--bad);border-color:rgba(138,45,45,.24)}.status-pill.bad::before{background:var(--bad)}

.orders{display:grid;gap:18px;margin-top:26px}
.order-card{padding:24px 26px}
.order-head{display:flex;align-items:flex-start;justify-content:space-between;gap:18px}
.order-id{font:10px/1 Consolas,monospace;letter-spacing:.14em;color:var(--muted)}
.order-title{font-size:19px;letter-spacing:-.02em;margin:8px 0 4px}
.order-sub{font-size:12px;color:var(--soft);line-height:1.7}
.metrics{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin:18px 0}
.metric{padding:10px 12px;background:#f2f2ee;border-radius:9px}
.metric b{display:block;font-size:16px;letter-spacing:-.02em;margin-bottom:4px}
.metric small{font:8px/1 Consolas,monospace;letter-spacing:.14em;color:var(--muted)}
.timeline{display:grid;gap:0;margin-top:18px}
.step{display:grid;grid-template-columns:14px 1fr;gap:12px;position:relative;padding-bottom:16px}
.step:not(:last-child)::before{content:"";position:absolute;left:6px;top:11px;bottom:0;width:1px;background:var(--line)}
.step i{width:7px;height:7px;border-radius:50%;background:#cfcfca;margin-top:6px;position:relative;z-index:1}
.step.done i{background:var(--ink)}
.step b{font-size:12px;display:block;margin-bottom:3px}
.step small{font-size:11px;color:var(--muted);line-height:1.65;display:block}
.details{margin-top:12px;border-top:1px solid var(--line-soft);padding-top:14px}
.details summary{cursor:pointer;font:10px/1.6 Consolas,monospace;letter-spacing:.12em;color:var(--soft)}
.detail-grid{display:grid;gap:10px;margin-top:12px}
.detail-row{display:grid;grid-template-columns:150px 1fr;gap:12px;font-size:12px;line-height:1.75;padding-bottom:8px;border-bottom:1px solid var(--line-soft)}
.detail-row dt{color:var(--muted);font-family:Consolas,monospace;font-size:10px;letter-spacing:.08em}
.detail-row dd{margin:0;color:var(--soft);word-break:break-word}

.empty{padding:50px 24px;text-align:center;color:var(--muted);font-size:13px}
.toolbar{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.toast{position:fixed;left:50%;bottom:28px;transform:translate(-50%,12px);background:var(--ink);color:#fff;font-size:12px;padding:10px 16px;border-radius:999px;opacity:0;pointer-events:none;transition:opacity .25s,transform .25s var(--ease);z-index:50}
.toast.show{opacity:1;transform:translate(-50%,0)}

.admin-layout{display:grid;grid-template-columns:340px 1fr;gap:22px;margin-top:26px;align-items:start}
.admin-list{padding:12px;max-height:calc(100vh - 220px);overflow:auto}
.admin-item{display:block;width:100%;text-align:left;padding:13px 12px;border:0;background:transparent;border-radius:10px;border-bottom:1px solid var(--line-soft)}
.admin-item:hover,.admin-item.on{background:#efefeb}
.admin-item b{display:block;font-size:13px;margin-bottom:4px}
.admin-item small{font-size:10px;color:var(--muted);line-height:1.6}
.admin-detail{padding:26px;min-height:420px}
.admin-actions{display:grid;grid-template-columns:180px 1fr auto;gap:10px;align-items:end;margin-top:18px}
.admin-actions label.field{margin:0}
.status-select{padding:10px 12px;border-radius:10px;border:1px solid var(--line);background:#fff}

.quote-summary{padding:18px 20px;background:#f2f2ee;border-radius:12px;margin-top:16px}
.quote-summary .row{padding:8px 0;border-bottom:1px solid rgba(11,12,14,.07);font-size:12px}
.quote-summary .row:last-child{border-bottom:0;padding-bottom:0}
.quote-summary .k{color:var(--muted);font:10px/1.6 Consolas,monospace;letter-spacing:.06em}
.quote-summary .v{text-align:right;font-weight:600}
.quote-table{width:100%;border-collapse:collapse;margin-top:14px;font-size:11px}
.quote-table th,.quote-table td{text-align:left;padding:8px 6px;border-bottom:1px solid var(--line-soft);vertical-align:top}
.quote-table th{font:9px/1.4 Consolas,monospace;letter-spacing:.08em;color:var(--muted);font-weight:400}
.quote-table td:last-child{text-align:right;white-space:nowrap}
.success{padding:38px 28px;text-align:center}
.success .big{font:11px/1 Consolas,monospace;letter-spacing:.2em;color:var(--muted)}
.success h2{font-size:30px;margin:14px 0 10px}
.success .oid{font:13px/1.6 Consolas,monospace;letter-spacing:.08em;background:#efefeb;display:inline-block;padding:8px 12px;border-radius:8px;margin:12px 0}

@media (max-width:900px){
  .topbar{padding:16px 18px}.brand img{width:88px}.brand small{display:none}.nav{font-size:9px;gap:12px}
  .shell{padding:30px 18px 50px}h1{font-size:34px}
  .auth-wrap{grid-template-columns:1fr;gap:26px}.auth-card{order:2}.auth-intro{order:1}
  .form-grid{grid-template-columns:1fr}.form-grid .full{grid-column:auto}
  .order-card{padding:20px}.order-head{display:grid}.metrics{grid-template-columns:1fr 1fr}
  .admin-layout{grid-template-columns:1fr}.admin-list{max-height:260px}
  .admin-actions{grid-template-columns:1fr}.admin-actions .btn{width:100%}
  .detail-row{grid-template-columns:1fr;gap:3px}
}
@media (max-width:520px){
  h1{font-size:29px}.shell{padding-left:14px;padding-right:14px}
  .panel,.auth-card{border-radius:14px}.pad,.order-card,.admin-detail{padding:18px}
  .metrics{grid-template-columns:1fr}.metric{display:flex;align-items:center;justify-content:space-between;gap:10px}
  .metric b{margin:0}.nav .back{display:none}
}

.order-tags{display:flex;gap:8px;flex-wrap:wrap;margin:2px 0 12px}
.order-actions{display:flex;gap:8px;flex-wrap:wrap;margin:0 0 14px}
.deposit-banner{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:18px 20px;border:1px solid var(--line);border-radius:12px;background:#f2f2ee;margin:16px 0}
.deposit-banner .amount{font-size:34px;letter-spacing:-.04em;line-height:1}
.deposit-banner .amount small{font-size:11px;letter-spacing:0;color:var(--muted);margin-left:4px}
.pay-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:18px;margin-top:18px;align-items:start}
.pay-card{padding:22px}
.pay-card h3{font-size:15px;margin:8px 0 10px}
.pay-list{display:grid;gap:8px;margin:12px 0;font-size:12px;color:var(--soft)}
.pay-list div{display:flex;justify-content:space-between;gap:12px;padding-bottom:7px;border-bottom:1px solid var(--line-soft)}
.pay-list span:first-child{color:var(--muted);font-family:Consolas,monospace;font-size:10px;letter-spacing:.06em}
.pay-list span:last-child{text-align:right;word-break:break-all}
.pay-note{font-size:11px;color:var(--muted);line-height:1.75;margin:10px 0}
.pay-form{display:grid;gap:12px;margin-top:12px}
.pay-form label.field{margin:0}
.pay-form select,.pay-form input,.pay-form textarea{width:100%;padding:10px 12px;border-radius:10px;border:1px solid var(--line);background:#fff;font:inherit;font-size:12px}
.pay-form textarea{min-height:76px;resize:vertical}
.pay-status{display:flex;align-items:center;gap:8px;font-size:12px;color:var(--soft);margin:6px 0 12px}
.contract-shell{max-width:860px;margin:0 auto}
.contract-text{white-space:pre-wrap;word-break:break-word;font:12px/1.95 "Microsoft YaHei",sans-serif;color:#2c2f33;background:#fff;border:1px solid var(--line);border-radius:12px;padding:26px 28px;max-height:440px;overflow:auto}
.signature-box{border:1px dashed rgba(11,12,14,.28);border-radius:12px;background:#fff;padding:8px;margin:12px 0 6px}
.signature-box canvas{display:block;width:100%;height:180px;touch-action:none;cursor:crosshair;border-radius:8px}
.signature-meta{display:flex;justify-content:space-between;gap:12px;font:9px/1.6 Consolas,monospace;letter-spacing:.08em;color:var(--muted);margin-bottom:12px}
.signed-signature{max-width:420px;width:100%;background:#fff;border:1px solid var(--line);border-radius:10px;padding:8px;margin:10px 0}
.contract-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:18px}
.notice{font-size:11px;line-height:1.8;color:var(--muted);border-left:2px solid var(--ink);padding-left:12px;margin:14px 0}
.admin-ops{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:18px 0}
.admin-op{border:1px solid var(--line);border-radius:12px;padding:14px 16px;background:#f7f7f3}
.admin-op b{display:block;font-size:12px;margin-bottom:5px}
.admin-op p{font-size:11px;color:var(--muted);line-height:1.7;margin:0 0 10px}
.admin-op .toolbar{margin-top:8px}
.settings-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.settings-grid .full{grid-column:1/-1}
.settings-grid label.field{margin:0}
.settings-grid input,.settings-grid textarea{width:100%;padding:10px 12px;border-radius:10px;border:1px solid var(--line);background:#fff;font:inherit;font-size:12px}
.settings-grid textarea{min-height:80px;resize:vertical}

@media (max-width:900px){
  .pay-grid,.admin-ops,.settings-grid{grid-template-columns:1fr}
  .pay-card,.admin-op{padding:16px}
  .contract-text{padding:18px 16px;font-size:11px}
  .signature-box canvas{height:160px}
  .contract-actions .btn{flex:1 1 auto}
}

.payer-box{border:1px solid var(--line);border-radius:12px;padding:16px 18px;background:#f7f7f3;margin:16px 0}
.payer-head{display:flex;align-items:baseline;justify-content:space-between;gap:12px;margin-bottom:12px}
.payer-head b{font-size:13px}.payer-head span{font:9px/1.6 Consolas,monospace;letter-spacing:.08em;color:var(--muted)}
.invoice-box{border:1px solid var(--line);border-radius:12px;padding:18px 20px;background:#f7f7f3;margin:16px 0}
.invoice-box h3{font-size:15px;margin:0 0 6px}
.invoice-box .hint{margin:0 0 12px}
.invoice-meta{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin:12px 0}
.invoice-meta div{background:#fff;border:1px solid var(--line);border-radius:10px;padding:11px 13px}
.invoice-meta b{display:block;font-size:13px;margin-top:3px}
.invoice-meta small{font:9px/1.4 Consolas,monospace;letter-spacing:.08em;color:var(--muted)}
.invoice-file{display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;background:#fff;border:1px solid var(--line);border-radius:10px;padding:14px 16px;margin:12px 0}
.invoice-file b{font-size:13px;display:block;margin-bottom:4px}
.invoice-file small{font-size:11px;color:var(--muted)}
.invoice-form{display:grid;gap:12px;margin-top:12px}
.invoice-form label.field{margin:0}
.invoice-form input,.invoice-form select,.invoice-form textarea{width:100%;padding:10px 12px;border-radius:10px;border:1px solid var(--line);background:#fff;font:inherit;font-size:12px}
.invoice-form textarea{min-height:70px;resize:vertical}
@media (max-width:900px){.invoice-meta{grid-template-columns:1fr}.invoice-file{align-items:flex-start}}
/* contact card */
.contact-card{display:grid;grid-template-columns:236px minmax(0,1fr);gap:26px;align-items:center;max-width:760px;margin:26px auto 0;padding:18px;background:#fff;border:1px solid var(--line);border-radius:20px;text-align:left}
.contact-card-img{display:block;width:100%;border-radius:12px;overflow:hidden;border:1px solid rgba(0,0,0,.08);background:#111;box-shadow:0 10px 30px rgba(0,0,0,.06)}
.contact-card-img img{display:block;width:100%;height:auto;transition:transform .5s cubic-bezier(.22,1,.36,1)}
.contact-card-img:hover img{transform:scale(1.025)}
.contact-card-body .mono{font-size:9px;letter-spacing:.18em;color:var(--muted)}
.contact-card-body h3{margin:10px 0 8px;font-size:22px;letter-spacing:-.03em;font-weight:650}
.contact-card-body p{margin:0;font-size:13px;line-height:1.75;color:var(--muted);max-width:34em}
.contact-tip{display:inline-block;margin-top:14px;font-family:Consolas,monospace;font-size:9px;letter-spacing:.12em;color:var(--muted)}
@media(max-width:640px){
  .contact-card{grid-template-columns:1fr;gap:16px;padding:14px;margin-top:20px}
  .contact-card-img{width:210px;margin:0 auto}
  .contact-card-body{text-align:center}
  .contact-card-body h3{font-size:20px;margin-top:8px}
  .contact-card-body p{font-size:12px}
}