:root{--color-bg:#f7f8fa;--color-surface:#fff;--color-border:#e4e7ec;--color-text:#101323;--color-text-muted:#6b7280;--color-primary:#2f6f4f;--color-primary-hover:#255a40;--color-primary-soft:#e8f3ec;--color-danger:#c0392b;--color-danger-soft:#fdecea;--radius:10px;--shadow-sm:0 1px 2px #1013230f;--shadow-md:0 4px 16px #10132314}*{box-sizing:border-box}html,body{margin:0;padding:0}body{background:var(--color-bg);color:var(--color-text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Inter,Roboto,Helvetica,Arial,sans-serif;font-size:15px;line-height:1.5}a{color:inherit}button,input,select,textarea{font:inherit;color:inherit}.page{flex-direction:column;min-height:100dvh;display:flex}.topbar{background:var(--color-surface);border-bottom:1px solid var(--color-border);justify-content:space-between;align-items:center;padding:14px 24px;display:flex}.topbar-brand{letter-spacing:.02em;font-size:15px;font-weight:700}.topbar-user{color:var(--color-text-muted);align-items:center;gap:12px;font-size:13px;display:flex}.lang-switch{border:1px solid var(--color-border);border-radius:8px;display:inline-flex;overflow:hidden}.lang-switch button{background:var(--color-surface);letter-spacing:.02em;cursor:pointer;color:var(--color-text-muted);border:none;padding:5px 10px;font-size:12px;font-weight:700}.lang-switch button.active{background:var(--color-primary);color:#fff}.container{flex:1;width:100%;max-width:880px;margin:0 auto;padding:32px 20px 80px}.container-narrow{max-width:440px}.center-page{justify-content:center;align-items:center;min-height:100dvh;padding:20px;display:flex}h1{margin:0 0 4px;font-size:22px;font-weight:700}h2{margin:0;font-size:17px;font-weight:650}.subtitle{color:var(--color-text-muted);margin:0 0 28px;font-size:14px}.card{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius);box-shadow:var(--shadow-sm);padding:22px}.card+.card{margin-top:16px}.field{flex-direction:column;gap:6px;margin-bottom:14px;display:flex}.field:last-child{margin-bottom:0}.field label{color:var(--color-text);font-size:13px;font-weight:600}.field .hint{color:var(--color-text-muted);font-size:12px}.input,select.input{border:1px solid var(--color-border);background:var(--color-surface);border-radius:8px;width:100%;padding:10px 12px;font-size:14px;transition:border-color .12s}.input:focus,select.input:focus{border-color:var(--color-primary);box-shadow:0 0 0 3px var(--color-primary-soft);outline:none}.row{grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:14px;display:grid}.btn{cursor:pointer;border:none;border-radius:8px;justify-content:center;align-items:center;gap:6px;padding:10px 18px;font-size:14px;font-weight:600;transition:background .12s,transform 50ms;display:inline-flex}.btn:active{transform:translateY(1px)}.btn-primary{background:var(--color-primary);color:#fff}.btn-primary:hover{background:var(--color-primary-hover)}.btn-primary:disabled{cursor:not-allowed;background:#a9c3b3}.btn-secondary{background:var(--color-primary-soft);color:var(--color-primary)}.btn-secondary:hover{background:#d9ecdf}.btn-ghost{color:var(--color-text-muted);background:0 0;padding:8px 10px}.btn-ghost:hover{color:var(--color-text);background:#eef0f3}.btn-danger-ghost{color:var(--color-danger);background:0 0;padding:6px 10px;font-size:13px}.btn-danger-ghost:hover{background:var(--color-danger-soft)}.btn-block{width:100%}.error-banner{background:var(--color-danger-soft);color:var(--color-danger);border-radius:8px;margin-bottom:16px;padding:10px 14px;font-size:13px}.activity-block{border:1px solid var(--color-border);border-radius:var(--radius);background:#fcfcfd;margin-bottom:16px;padding:18px}.activity-block-header{justify-content:space-between;align-items:center;margin-bottom:14px;display:flex}.activity-number{background:var(--color-primary);color:#fff;border-radius:50%;justify-content:center;align-items:center;width:22px;height:22px;margin-right:8px;font-size:12px;font-weight:700;display:inline-flex}.line-item{grid-template-columns:1fr 90px 100px 32px;align-items:end;gap:10px;margin-bottom:10px;display:grid}.line-item:last-child{margin-bottom:0}.line-total{color:var(--color-text-muted);text-align:right;white-space:nowrap;padding-bottom:10px;font-size:13px}.icon-btn{color:var(--color-text-muted);cursor:pointer;background:0 0;border:none;border-radius:6px;width:32px;height:38px;font-size:16px;line-height:1}.icon-btn:hover{background:var(--color-danger-soft);color:var(--color-danger)}.transfer-toggle{align-items:center;gap:10px;margin-top:14px;font-size:13px;display:flex}.toggle-pair{border:1px solid var(--color-border);border-radius:8px;display:inline-flex;overflow:hidden}.toggle-pair button{background:var(--color-surface);cursor:pointer;color:var(--color-text-muted);border:none;padding:6px 14px;font-size:13px}.toggle-pair button.active{background:var(--color-primary);color:#fff}.add-activity-btn{border:1.5px dashed var(--color-border);border-radius:var(--radius);width:100%;color:var(--color-primary);cursor:pointer;background:0 0;margin-bottom:20px;padding:14px;font-size:14px;font-weight:600}.add-activity-btn:hover{border-color:var(--color-primary);background:var(--color-primary-soft)}.summary-bar{background:var(--color-surface);border-top:1px solid var(--color-border);justify-content:space-between;align-items:center;margin-top:8px;padding:16px 24px;display:flex;position:sticky;bottom:0;box-shadow:0 -4px 16px #1013230f}.summary-bar .total-label{color:var(--color-text-muted);text-transform:uppercase;letter-spacing:.04em;font-size:12px}.summary-bar .total-amount{font-size:22px;font-weight:700}.summary-row{border-bottom:1px solid var(--color-border);justify-content:space-between;padding:10px 0;font-size:14px;display:flex}.summary-row:last-child{border-bottom:none}.badge{text-transform:uppercase;letter-spacing:.03em;background:var(--color-primary-soft);color:var(--color-primary);border-radius:999px;align-items:center;padding:3px 9px;font-size:11px;font-weight:700;display:inline-flex}.muted{color:var(--color-text-muted)}.success-check{background:var(--color-primary-soft);width:52px;height:52px;color:var(--color-primary);border-radius:50%;justify-content:center;align-items:center;margin-bottom:16px;font-size:26px;display:flex}@media (max-width:640px){.line-item{grid-template-columns:1fr}.line-total{text-align:left;padding-bottom:0}.container{padding:20px 14px 60px}}