:root{--primary:#002444;--primary-container:#1a3a5c;--primary-deep:#164e63;--on-primary:#fff;--on-primary-container:#87a4cc;--secondary:#006a65;--secondary-container:#79f3ea;--on-secondary:#fff;--on-secondary-fixed:#00201e;--surface:#f8f9ff;--surface-container-lowest:#fff;--surface-container-low:#eef4ff;--surface-container:#e5efff;--surface-container-high:#dbe9ff;--surface-container-highest:#d5e4fa;--on-surface:#0d1c2c;--on-surface-variant:#43474e;--outline:#73777f;--outline-variant:#c3c6cf;--error:#ba1a1a;--error-container:#ffdad6;--on-error-container:#93000a;--tertiary-container:#004219;--on-tertiary-container:#03ba55;--success:#1f8a4c;--success-bg:#dcfce7;--warning:#b45309;--warning-bg:#fef3c7;--shadow-1:0 1px 3px #0f1e2e0a, 0 1px 2px #0f1e2e08;--shadow-2:0 4px 12px #0f1e2e0f, 0 2px 4px #0f1e2e08;--shadow-3:0 12px 28px #1a3a5c1f, 0 4px 8px #1a3a5c0d;--shadow-fab:0 10px 24px #006a6559;--radius-sm:4px;--radius-md:8px;--radius-lg:12px;--radius-xl:16px;--radius-2xl:20px;--radius-3xl:28px;--radius-full:9999px;--space-xs:4px;--space-sm:8px;--space-md:16px;--space-lg:24px;--space-xl:32px;--font-family:"Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif}*{box-sizing:border-box;margin:0;padding:0}html,body{width:100%;height:100%;font-family:var(--font-family);background:var(--surface-container);color:var(--on-surface);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;overflow:hidden}body{justify-content:center;align-items:stretch;display:flex}#root{justify-content:center;align-items:stretch;width:100%;height:100%;display:flex}.app-container{background:var(--surface);flex-direction:column;width:100%;max-width:520px;height:100dvh;padding:0;display:flex;position:relative;overflow:hidden}@media 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0;border:none;padding:14px;display:flex}.member-main{align-items:center;gap:var(--space-sm);flex:1;min-width:0;display:flex}.member-avatar-wrap{flex-shrink:0;position:relative}.member-info{flex-direction:column;min-width:0;display:flex}.member-name-row{align-items:center;gap:6px;display:flex}.member-name{color:var(--on-surface);text-overflow:ellipsis;white-space:nowrap;font-size:15px;font-weight:600;overflow:hidden}.member-count{color:var(--on-surface-variant);font-size:12px}.member-paid{color:var(--on-surface-variant);margin-top:2px;font-size:12px}.member-right{flex-shrink:0;align-items:center;gap:8px;display:flex}.member-balance{flex-direction:column;align-items:flex-end;gap:2px;display:flex}.balance-value{color:var(--on-surface-variant);font-variant-numeric:tabular-nums;font-size:14px;font-weight:700}.balance-value.positive{color:var(--on-tertiary-container)}.balance-value.negative{color:var(--error)}.balance-tag{border-radius:var(--radius-sm);padding:2px 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svg{color:var(--secondary)}.btn-settle{border-radius:var(--radius-xl);background:var(--secondary-container);height:36px;color:var(--on-secondary-fixed);font-family:var(--font-family);cursor:pointer;box-shadow:var(--shadow-1);border:none;align-items:center;gap:6px;padding:0 14px;font-size:13px;font-weight:600;transition:transform .1s,background .15s;display:inline-flex}.btn-settle:active{transform:scale(.96)}.btn-settle:hover{background:#5dd9d0}.history-card{background:var(--surface-container-lowest);border-radius:var(--radius-2xl);box-shadow:var(--shadow-1);overflow:hidden}.history-header{justify-content:space-between;align-items:center;gap:var(--space-sm);cursor:pointer;width:100%;font-family:var(--font-family);text-align:left;background:0 0;border:none;padding:14px;display:flex}.history-title-block{align-items:center;gap:10px;min-width:0;display:flex}.history-icon{border-radius:var(--radius-full);background:var(--surface-container-high);width:28px;height:28px;color:var(--primary);flex-shrink:0;justify-content:center;align-items:center;display:inline-flex}.history-titles{flex-direction:column;min-width:0;display:flex}.history-title{color:var(--on-surface);font-size:14px;font-weight:600}.history-sub{color:var(--on-surface-variant);font-size:12px}.history-chevron{color:var(--on-surface-variant)}.history-content{background:var(--surface-container-low);padding:4px 14px 14px}.history-empty{color:var(--on-surface-variant);text-align:center;padding:12px 0;font-size:12px}.export-section{padding-top:var(--space-sm);gap:var(--space-sm)}.btn-share{border-radius:var(--radius-2xl);background:var(--primary-container);width:100%;height:52px;color:var(--on-primary);font-family:var(--font-family);cursor:pointer;box-shadow:var(--shadow-2);border:none;justify-content:center;align-items:center;gap:10px;font-size:15px;font-weight:600;transition:transform .1s,background .15s;display:inline-flex}.btn-share:active{transform:scale(.98)}.btn-share:hover{background:#163350}.btn-export{border-radius:var(--radius-2xl);width:100%;height:46px;color:var(--primary);font-family:var(--font-family);cursor:pointer;background:0 0;border:none;justify-content:center;align-items:center;gap:8px;font-size:14px;font-weight:600;transition:background .15s;display:inline-flex}.btn-export:hover{background:var(--surface-container)}.profile-card{gap:0}.profile-header{align-items:center;gap:var(--space-md);display:flex}.profile-avatar-wrap{flex-shrink:0;position:relative}.profile-avatar{border-radius:var(--radius-full);color:#001c37;background:#d2e4ff;justify-content:center;align-items:center;width:64px;height:64px;font-size:24px;font-weight:700;display:flex}.profile-verified{border-radius:var(--radius-full);background:var(--secondary-container);width:22px;height:22px;color:var(--on-secondary-fixed);border:2px solid 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