:root{--xz-bg: #f5f7f3;--xz-surface: #ffffff;--xz-surface-soft: #edf4ef;--xz-primary: #184f43;--xz-primary-hover: #103e35;--xz-primary-soft: #dcebe4;--xz-text: #202823;--xz-muted: #68756e;--xz-border: #dce3de;--xz-success: #21845f;--xz-warning: #b06b17;--xz-danger: #b43b3b;--xz-info: #356fa3;--xz-radius-sm: 8px;--xz-radius: 14px;--xz-radius-lg: 20px;--xz-shadow: 0 12px 32px rgba(29, 65, 53, .08);--xz-space-1: 4px;--xz-space-2: 8px;--xz-space-3: 12px;--xz-space-4: 16px;--xz-space-5: 24px;--xz-space-6: 32px;--xz-sidebar: 284px;color:var(--xz-text);background:var(--xz-bg);font-family:Inter,PingFang SC,Microsoft YaHei,system-ui,sans-serif}*{box-sizing:border-box}body{margin:0;min-width:320px;min-height:100vh;background:var(--xz-bg)}button,input,textarea,select{font:inherit}button{cursor:pointer}.xz-button{border:0;border-radius:var(--xz-radius-sm);padding:10px 16px;background:var(--xz-primary);color:#fff;font-weight:650;transition:background .15s}.xz-button:hover{background:var(--xz-primary-hover)}.xz-button:disabled{cursor:not-allowed;opacity:.5}.xz-button.secondary{background:var(--xz-surface);color:var(--xz-primary);border:1px solid var(--xz-border)}.xz-button.ghost{background:transparent;color:var(--xz-muted)}.xz-button.danger{background:var(--xz-danger)}.xz-card{background:var(--xz-surface);border:1px solid var(--xz-border);border-radius:var(--xz-radius);padding:var(--xz-space-4);box-shadow:0 2px 10px #184f4308}.xz-badge{display:inline-flex;align-items:center;padding:4px 9px;border-radius:999px;font-size:12px;background:#edf0ee;color:var(--xz-muted)}.xz-badge-success{background:#e1f2e9;color:var(--xz-success)}.xz-badge-warning{background:#fff0d9;color:var(--xz-warning)}.xz-badge-danger{background:#fbe5e5;color:var(--xz-danger)}.xz-badge-info{background:#e4eef8;color:var(--xz-info)}.xz-empty{padding:40px 20px;text-align:center;color:var(--xz-muted)}.xz-empty strong{color:var(--xz-text)}.xz-spinner{width:20px;height:20px;border:2px solid var(--xz-border);border-top-color:var(--xz-primary);border-radius:50%;display:inline-block;animation:xz-spin .8s linear infinite}@keyframes xz-spin{to{transform:rotate(360deg)}}.xz-page-title{display:flex;align-items:center;justify-content:space-between;gap:16px}.xz-page-title h1{font-size:22px;margin:0}.xz-field{display:grid;gap:7px}.xz-field label{font-weight:650;font-size:14px}.xz-field small{color:var(--xz-muted)}.xz-field input,.xz-field textarea,.xz-field select{width:100%;border:1px solid var(--xz-border);border-radius:10px;padding:11px 12px;background:#fff;color:var(--xz-text)}.xz-field textarea{min-height:96px;resize:vertical}.xz-field input:focus,.xz-field textarea:focus,.xz-field select:focus{outline:3px solid var(--xz-primary-soft);border-color:var(--xz-primary)}.app-loading{min-height:100vh;display:grid;place-items:center}.auth-page{min-height:100vh;display:grid;grid-template-columns:1.1fr .9fr;align-items:center;max-width:1080px;margin:auto;padding:48px;gap:80px}.auth-brand h1{font-size:54px;margin:16px 0 8px}.auth-brand p{font-size:20px;color:var(--xz-muted)}.brand-mark{width:64px;height:64px;display:grid;place-items:center;border-radius:20px;background:var(--xz-primary);color:#fff;font-size:28px;font-weight:800;box-shadow:var(--xz-shadow)}.auth-card{max-width:420px;width:100%;padding:30px}.auth-card form{display:grid;gap:18px}.auth-card .xz-button{margin-top:6px}.auth-tabs{display:flex;border-bottom:1px solid var(--xz-border);margin-bottom:24px}.auth-tabs button{flex:1;border:0;background:transparent;padding:12px;color:var(--xz-muted);font-weight:700}.auth-tabs button.active{color:var(--xz-primary);border-bottom:2px solid var(--xz-primary)}.error-banner,.success-banner{padding:11px 13px;border-radius:9px;margin:0}.error-banner{background:#fbe5e5;color:var(--xz-danger)}.success-banner{background:#e1f2e9;color:var(--xz-success)}.workbench{height:100vh;display:grid;grid-template-columns:var(--xz-sidebar) 1fr;overflow:hidden}.sidebar{background:#eef3ef;border-right:1px solid var(--xz-border);padding:20px 16px;display:flex;flex-direction:column;gap:18px;overflow:auto}.brand{display:flex;align-items:center;gap:10px;padding:4px}.brand span{width:34px;height:34px;display:grid;place-items:center;background:var(--xz-primary);color:#fff;border-radius:10px;font-weight:800}.brand strong{font-size:20px}.sidebar>.xz-button{display:flex;align-items:center;justify-content:center;gap:8px}.sidebar nav{display:grid;gap:5px}.sidebar nav h3{font-size:12px;color:var(--xz-muted);text-transform:uppercase;margin:4px 8px}.sidebar nav button{display:flex;align-items:center;gap:8px;border:0;background:transparent;text-align:left;padding:9px 10px;border-radius:8px;color:var(--xz-muted);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.sidebar nav button:hover,.sidebar nav button.active{background:var(--xz-surface);color:var(--xz-primary)}.sidebar-user{margin-top:auto;border-top:1px solid var(--xz-border);padding:16px 6px 0;display:flex;align-items:center;justify-content:space-between;gap:10px}.sidebar-user div{display:grid;min-width:0}.sidebar-user small{color:var(--xz-muted);overflow:hidden;text-overflow:ellipsis}.sidebar-user button{border:0;background:transparent;color:var(--xz-muted)}.chat-shell{min-width:0;display:grid;grid-template-rows:68px 1fr auto;background:var(--xz-surface)}.chat-header{border-bottom:1px solid var(--xz-border);display:flex;align-items:center;padding:0 28px}.chat-header>div{display:grid;gap:2px}.chat-header small{color:var(--xz-muted)}.mobile-menu{display:none;border:0;background:transparent}.chat-stream{overflow-y:auto;padding:30px max(28px,calc((100% - 850px)/2));display:flex;flex-direction:column;gap:20px}.welcome{margin:auto;text-align:center;max-width:640px;display:grid;justify-items:center}.welcome h1{margin:18px 0 8px}.welcome p{color:var(--xz-muted);font-size:17px}.quick-prompts{display:flex;gap:10px;flex-wrap:wrap;justify-content:center;margin-top:14px}.quick-prompts button{border:1px solid var(--xz-border);background:#fff;border-radius:999px;padding:9px 14px;color:var(--xz-primary)}.message{max-width:82%;display:grid;gap:7px}.message-user{align-self:flex-end}.message-author{font-size:13px;color:var(--xz-muted)}.message-user .message-author{text-align:right}.message-body{padding:14px 17px;border-radius:16px;background:#f1f3f1;line-height:1.65;white-space:pre-wrap}.message-user .message-body{background:var(--xz-primary);color:#fff;border-bottom-right-radius:5px}.message-assistant .message-body{border-bottom-left-radius:5px}.message small{color:var(--xz-muted)}.inline-transactions{display:grid;gap:10px;border-top:1px dashed var(--xz-border);padding-top:18px}.inline-transactions h3{font-size:14px;color:var(--xz-muted);margin:0}.transaction-card{display:flex;align-items:center;justify-content:space-between;gap:16px;cursor:pointer}.transaction-card>div{display:grid;gap:5px}.transaction-card small{color:var(--xz-muted)}.chat-footer{margin:0 auto 20px;width:min(880px,calc(100% - 40px));display:grid;gap:10px}.transaction-shortcuts{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:9px}.transaction-shortcuts button{display:flex;align-items:center;justify-content:center;gap:7px;min-height:42px;border:1px solid var(--xz-border);border-radius:12px;background:var(--xz-surface);color:var(--xz-primary);font-weight:700;box-shadow:0 3px 12px #122f270d}.transaction-shortcuts button:hover{border-color:#91b3a5;background:var(--xz-primary-soft)}.composer{box-sizing:border-box;width:100%;display:flex;align-items:flex-end;gap:8px;padding:10px;background:var(--xz-surface);border:1px solid var(--xz-border);border-radius:18px;box-shadow:var(--xz-shadow)}.composer textarea{flex:1;border:0;outline:0;resize:none;min-height:42px;max-height:140px;padding:10px;background:transparent}.icon-button,.send-button{width:42px;height:42px;display:grid;place-items:center;border-radius:12px;border:0}.icon-button{background:var(--xz-surface-soft);color:var(--xz-primary)}.send-button{background:var(--xz-primary);color:#fff}.scene-drawer-backdrop{position:fixed;z-index:40;top:0;right:0;bottom:0;left:0;border:0;background:#122f2747}.scene-drawer{position:fixed;z-index:41;right:0;top:0;box-sizing:border-box;height:100dvh;width:min(520px,100%);background:var(--xz-bg);box-shadow:-20px 0 60px #122f272e;padding:24px;overflow:auto}.drawer-head{display:flex;justify-content:space-between;gap:16px}.drawer-head h2{margin:0}.drawer-head p{color:var(--xz-muted)}.drawer-head button{border:0;background:transparent;font-size:30px}.scene-status{padding:11px 13px;border-radius:9px;background:var(--xz-primary-soft);color:var(--xz-primary)}.scene-empty{padding:18px;border:1px dashed var(--xz-border);border-radius:12px;background:var(--xz-surface);color:var(--xz-muted);text-align:center}.scene-drawer[aria-busy=true] .scene-card{pointer-events:none;opacity:.65}.scene-drawer section h3{margin-top:28px}.scene-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}.scene-card{text-align:left;display:grid;justify-items:start;gap:8px;background:var(--xz-surface);border:1px solid var(--xz-border);border-radius:14px;padding:16px;color:var(--xz-text)}.scene-card:hover:not(:disabled){border-color:#91b3a5;box-shadow:var(--xz-shadow)}.scene-card:disabled{opacity:.58;cursor:not-allowed}.scene-card p{margin:0;color:var(--xz-muted);font-size:13px;line-height:1.5}.scene-icon{width:34px;height:34px;display:grid;place-items:center;background:var(--xz-primary-soft);color:var(--xz-primary);border-radius:10px;font-weight:800}.transaction-page,.simple-page{max-width:1180px;margin:auto;padding:30px}.back-link{display:flex;align-items:center;gap:5px;border:0;background:transparent;color:var(--xz-muted);padding:0;margin-bottom:20px}.transaction-page>.xz-page-title{margin-bottom:20px}.transaction-layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:20px}.transaction-main{display:grid;gap:18px}.transaction-main h2,.workflow-panel h2{font-size:17px;margin:0 0 14px}.muted{color:var(--xz-muted)}.dynamic-form{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}.dynamic-form>.xz-field:has(textarea),.dynamic-form>button{grid-column:1/-1}.choice-grid{display:flex;flex-wrap:wrap;gap:10px}.choice-grid label{font-weight:400}.field-error{color:var(--xz-danger)!important}.upload-list{display:grid;gap:10px}.upload-list label{display:flex;align-items:center;justify-content:space-between;border:1px dashed #9fb5aa;border-radius:10px;padding:12px;cursor:pointer}.upload-list label span{display:flex;align-items:center;gap:8px}.upload-list input{max-width:220px}.analysis-card{border-left:4px solid var(--xz-info)}.result-card{border-left:4px solid var(--xz-success)}.result-card h2{display:flex;gap:8px}.result-card dl{display:grid;gap:10px}.result-card dl div{display:grid;grid-template-columns:160px 1fr}.result-card dt{color:var(--xz-muted)}.result-card dd{margin:0}.workflow-panel{position:sticky;top:20px;align-self:start}.status-row{display:flex;justify-content:space-between;padding:12px 0;border-bottom:1px solid var(--xz-border)}.status-row span{color:var(--xz-muted)}.workflow-actions{display:grid;gap:10px;margin-top:18px}.notification{display:flex;justify-content:space-between;align-items:center;gap:20px;margin-top:12px}.notification.read{opacity:.68}.notification p{color:var(--xz-muted);margin:6px 0}.notification small{color:var(--xz-muted)}@media(max-width:760px){.auth-page{grid-template-columns:1fr;padding:24px}.auth-brand{display:none}.workbench{grid-template-columns:1fr}.mobile-nav-backdrop{position:fixed;z-index:29;top:0;right:0;bottom:0;left:0;border:0;background:#122f2747}.sidebar{position:fixed;z-index:30;left:-100%;box-sizing:border-box;width:min(86vw,320px);height:100dvh;transition:left .2s}.sidebar.open{left:0}.mobile-menu{display:block;margin-right:12px}.chat-header{padding:0 14px}.chat-stream{padding:20px 14px}.chat-footer{width:calc(100% - 20px);margin-bottom:10px;gap:8px}.transaction-shortcuts{gap:6px}.transaction-shortcuts button{min-height:38px;padding:6px 4px;font-size:13px}.composer{width:100%}.scene-grid{grid-template-columns:1fr}.transaction-page,.simple-page{padding:20px 14px}.transaction-layout{grid-template-columns:1fr}.workflow-panel{position:static}.dynamic-form{grid-template-columns:1fr}.dynamic-form>*{grid-column:1!important}.notification{align-items:flex-start}.result-card dl div{grid-template-columns:1fr}}.masked-hint{display:inline-flex;width:max-content;max-width:100%;padding:5px 8px;border-radius:7px;background:var(--xz-primary-soft);color:var(--xz-primary)!important}.tax-stage-card{border-left:4px solid var(--xz-info)}.tax-stage-warning{border-left-color:var(--xz-warning)}.tax-stage-success{border-left-color:var(--xz-success)}.tax-stage-danger{border-left-color:var(--xz-danger)}.tax-stage-heading{display:flex;align-items:flex-start;gap:12px}.tax-stage-heading>svg{flex:0 0 auto;color:var(--xz-primary)}.tax-stage-warning .tax-stage-heading>svg{color:var(--xz-warning)}.tax-stage-danger .tax-stage-heading>svg{color:var(--xz-danger)}.tax-stage-success .tax-stage-heading>svg{color:var(--xz-success)}.tax-stage-heading h2{margin:0 0 5px}.tax-stage-heading p{margin:0;color:var(--xz-muted);line-height:1.6}.browser-session-summary{display:flex;align-items:center;gap:9px;flex-wrap:wrap;margin-top:15px;padding-top:13px;border-top:1px solid var(--xz-border)}.browser-session-summary>span{font-size:13px;color:var(--xz-muted)}.browser-session-summary small{color:var(--xz-muted)}.tax-loading-card{display:flex;align-items:center;gap:10px;color:var(--xz-muted)}.tax-card-title{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:8px}.tax-card-title h2{display:flex;align-items:center;gap:8px;margin:0}.tax-secret-card{border-top:3px solid var(--xz-primary)}.tax-secret-form{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:18px}.tax-secret-form>.xz-field:last-of-type,.tax-secret-form>.xz-button{grid-column:1/-1}.sms-code-form{display:flex;align-items:end;gap:12px;margin-top:16px}.sms-code-form .xz-field{flex:1}.tax-preview-card,.tax-result-card{display:grid;gap:18px}.tax-summary-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0;margin:0;border:1px solid var(--xz-border);border-radius:10px;overflow:hidden}.tax-summary-grid>div{display:grid;grid-template-columns:minmax(120px,.8fr) minmax(0,1.2fr);gap:10px;padding:11px 12px;border-bottom:1px solid var(--xz-border)}.tax-summary-grid>div:nth-child(odd){border-right:1px solid var(--xz-border)}.tax-summary-grid dt{color:var(--xz-muted);font-size:13px}.tax-summary-grid dd{margin:0;font-weight:650;overflow-wrap:anywhere}.readback-section{border-top:1px solid var(--xz-border);padding-top:14px}.readback-section h3,.validation-checks h3{font-size:15px;margin:0 0 10px}.readback-section dl{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px;margin:0}.readback-section dl>div{display:flex;justify-content:space-between;gap:12px;padding:8px 10px;background:var(--xz-surface-soft);border-radius:8px}.readback-section dt{color:var(--xz-muted);font-size:13px}.readback-section dd{margin:0;font-weight:650}.validation-checks ul,.preview-errors{display:grid;gap:7px;margin:0;padding-left:20px}.validation-checks li.passed{color:var(--xz-success)}.validation-checks li.failed,.preview-errors{color:var(--xz-danger)}.preview-confirmation{display:flex;align-items:flex-start;gap:10px;padding:14px;border:1px solid var(--xz-border);border-radius:10px;background:var(--xz-surface-soft);line-height:1.65;cursor:pointer}.preview-confirmation input{margin-top:5px;flex:0 0 auto}.tax-result-card{border-left:4px solid var(--xz-success)}.tax-result-heading{display:flex;align-items:flex-start;gap:13px}.tax-result-heading>svg{color:var(--xz-success);width:30px;height:30px}.tax-result-heading h2{margin:0 0 5px}.tax-result-heading p{margin:0;color:var(--xz-muted)}.evidence-actions{display:flex;flex-wrap:wrap;align-items:center;gap:16px}.evidence-link{display:inline-flex;width:max-content;padding:0;border:0;background:transparent;color:var(--xz-primary);font:inherit;font-weight:700;text-decoration:underline;cursor:pointer}.evidence-link:disabled{opacity:.65;cursor:wait}.evidence-preview{display:grid;gap:8px;margin:0}.evidence-preview img{display:block;width:100%;max-height:70vh;object-fit:contain;border:1px solid var(--xz-border);border-radius:12px;background:#eef3ef}.evidence-preview figcaption{color:var(--xz-muted);font-size:13px;text-align:center}.tax-exception-card{border-left:4px solid var(--xz-warning)}.tax-exception-card h2{display:flex;align-items:center;gap:8px}.tax-exception-card p{line-height:1.65}.tax-exception-card code{width:max-content;padding:5px 8px;border-radius:6px;background:#fff0d9;color:var(--xz-warning)}.tax-phase-list{display:grid;gap:0;list-style:none;padding:0;margin:0 0 16px}.tax-phase-list li{position:relative;display:flex;align-items:center;gap:10px;min-height:38px;color:var(--xz-muted);font-size:13px}.tax-phase-list li:not(:last-child):after{content:"";position:absolute;left:12px;top:30px;width:2px;height:16px;background:var(--xz-border)}.tax-phase-list li>span{position:relative;z-index:1;width:26px;height:26px;display:grid;place-items:center;border-radius:50%;background:#edf0ee;color:var(--xz-muted);font-size:12px;font-weight:750}.tax-phase-list li.done,.tax-phase-list li.active{color:var(--xz-primary);font-weight:700}.tax-phase-list li.done>span{background:var(--xz-primary);color:#fff}.tax-phase-list li.active>span{background:var(--xz-primary-soft);color:var(--xz-primary);box-shadow:0 0 0 2px var(--xz-primary)}.tax-workflow-panel .status-row{align-items:flex-start;gap:12px}.tax-workflow-panel .status-row strong{text-align:right;font-size:13px}.upload-list label span small{display:block;margin-left:8px;color:var(--xz-success)}@media(max-width:760px){.tax-secret-form{grid-template-columns:1fr}.tax-secret-form>*{grid-column:1!important}.sms-code-form{align-items:stretch;flex-direction:column}.tax-summary-grid{grid-template-columns:1fr}.tax-summary-grid>div:nth-child(odd){border-right:0}.readback-section dl{grid-template-columns:1fr}.tax-card-title{align-items:flex-start;flex-direction:column}.tax-summary-grid>div{grid-template-columns:1fr}}.login-methods{display:grid;grid-template-columns:1fr 1fr;gap:.5rem;margin-bottom:1rem}.login-methods button{border:1px solid var(--xz-border, #d9d9d9);border-radius:.5rem;background:transparent;padding:.65rem;cursor:pointer}.login-methods button.active{border-color:var(--xz-primary, #1677ff);color:var(--xz-primary, #1677ff);background:#1677ff14}.sms-code-row{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:.75rem;align-items:end}.sms-code-row .xz-button{white-space:nowrap}