.btn{display:inline-flex;align-items:center;justify-content:center;gap:var(--space-2);min-height:var(--size-button-height);min-width:var(--size-touch-min);padding:var(--space-3) var(--space-6);border-radius:var(--radius-button);font:var(--font-body-large);transition:opacity .15s ease,transform .1s ease;user-select:none;-webkit-user-select:none}.btn:active:not(.btn--disabled){transform:scale(.97)}.btn--full{width:100%}.btn--primary{background:var(--color-primary-600);color:var(--color-text-on-primary)}.btn--primary:hover{opacity:.92}.btn--accent{background:var(--color-accent-600);color:var(--color-text-on-accent)}.btn--accent:hover{opacity:.92}.btn--secondary{background:var(--color-surface);color:var(--color-primary-600);border:1px solid var(--color-primary-600)}.btn--secondary:hover{background:var(--color-primary-100)}.btn--danger{background:var(--color-danger-600);color:#fff}.btn--danger:hover{opacity:.92}.btn--disabled{background:var(--color-surface-sunken);color:var(--color-text-disabled);cursor:not-allowed}:root{--color-primary-900: #16283F;--color-primary-600: #1E3A5F;--color-primary-100: #E4EAF1;--color-accent-600: #B9762C;--color-accent-100: #F6E9D8;--color-bg-base: #F7F6F3;--color-surface: #FFFFFF;--color-surface-sunken: #EFEDE8;--color-border: #DAD7CF;--color-success-600: #2F8F5B;--color-success-100: #E6F4EA;--color-neutral-500: #8A8F98;--color-warning-600: #D98A2B;--color-warning-100: #FDF3E1;--color-danger-600: #C6483F;--color-info-600: #3A6EA5;--color-info-100: #EBF3FA;--color-text-primary: #1B1B1B;--color-text-secondary: #5B5D63;--color-text-disabled: #A6A8AC;--color-text-on-primary: #FFFFFF;--color-text-on-accent: #FFFFFF;--font-family-base: "Pretendard Variable", -apple-system, Roboto, sans-serif;--font-display: 700 44px/1.3 var(--font-family-base);--font-heading-1: 700 36px/1.35 var(--font-family-base);--font-heading-2: 700 30px/1.4 var(--font-family-base);--font-body-large: 600 24px/1.5 var(--font-family-base);--font-body: 600 20px/1.6 var(--font-family-base);--font-caption: 600 18px/1.5 var(--font-family-base);--font-numeric-emphasis: 700 44px/1.2 var(--font-family-base);--space-1: 4px;--space-2: 8px;--space-3: 12px;--space-4: 16px;--space-6: 24px;--space-8: 32px;--radius-card: 16px;--radius-button: 12px;--radius-badge: 999px;--size-touch-min: 48px;--size-button-height: 56px;--size-numpad-key: 64px}html[data-font-scale=large]{--font-display: 700 48px/1.3 var(--font-family-base);--font-heading-1: 700 40px/1.35 var(--font-family-base);--font-heading-2: 700 34px/1.4 var(--font-family-base);--font-body-large: 600 28px/1.5 var(--font-family-base);--font-body: 600 24px/1.6 var(--font-family-base);--font-caption: 600 20px/1.5 var(--font-family-base);--font-numeric-emphasis: 700 48px/1.2 var(--font-family-base)}html[data-font-scale=xlarge]{--font-display: 700 56px/1.3 var(--font-family-base);--font-heading-1: 700 48px/1.35 var(--font-family-base);--font-heading-2: 700 40px/1.4 var(--font-family-base);--font-body-large: 600 34px/1.5 var(--font-family-base);--font-body: 600 28px/1.6 var(--font-family-base);--font-caption: 600 24px/1.5 var(--font-family-base);--font-numeric-emphasis: 700 56px/1.2 var(--font-family-base)}*,*:before,*:after{margin:0;padding:0;box-sizing:border-box}html{-webkit-text-size-adjust:100%;-webkit-tap-highlight-color:transparent}body{font:var(--font-body);color:var(--color-text-primary);background-color:var(--color-bg-base);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;min-height:100dvh;overflow-x:hidden}#root{min-height:100dvh;display:flex;flex-direction:column}.tabular-nums{font-variant-numeric:tabular-nums}a{color:var(--color-primary-600);text-decoration:none}ul,ol{list-style:none}img{max-width:100%;display:block}input,button,textarea,select{font:inherit;color:inherit;border:none;outline:none;background:none}button{cursor:pointer;touch-action:manipulation}:focus-visible{outline:2px solid var(--color-primary-600);outline-offset:2px}.page{flex:1;display:flex;flex-direction:column;max-width:480px;margin:0 auto;width:100%;padding-bottom:80px}.page-content{flex:1;padding:var(--space-4)}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);border:0}.toast{position:fixed;top:var(--space-6);left:50%;transform:translate(-50%);background:var(--color-primary-900);color:var(--color-text-on-primary);font:var(--font-body);padding:var(--space-3) var(--space-6);border-radius:var(--radius-badge);z-index:9999;animation:toast-in .3s ease-out,toast-out .3s ease-in 2.7s forwards;max-width:calc(100% - var(--space-8))}@keyframes toast-in{0%{opacity:0;transform:translate(-50%) translateY(-16px)}to{opacity:1;transform:translate(-50%) translateY(0)}}@keyframes toast-out{0%{opacity:1}to{opacity:0}}.amount-korean-helper{margin-top:-4px;padding:var(--space-3) var(--space-4);background-color:var(--color-background-alt);border:1px solid var(--color-border);border-top:1px dashed var(--color-border);border-radius:0 0 12px 12px;display:flex;align-items:flex-start;gap:var(--space-2);box-shadow:0 2px 4px #00000005}.amount-korean-label{font-size:24px;font-weight:800;color:var(--color-primary-600);white-space:nowrap}.amount-korean-text{font-size:24px;font-weight:800;color:var(--color-primary-600);line-height:1.4;word-break:keep-all}.splash{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:100dvh;background:var(--color-primary-900);gap:var(--space-8);animation:splash-fade .3s ease-out}@keyframes splash-fade{0%{opacity:0}to{opacity:1}}.splash__logo{display:flex;flex-direction:column;align-items:center;gap:var(--space-3)}.splash__icon{font-size:64px;animation:splash-bounce 1s ease-in-out infinite}@keyframes splash-bounce{0%,to{transform:translateY(0)}50%{transform:translateY(-8px)}}.splash__title{font:var(--font-display);color:var(--color-text-on-primary);letter-spacing:4px}.splash__loader{display:flex;gap:var(--space-2)}.splash__dot{width:8px;height:8px;border-radius:50%;background:var(--color-accent-600);animation:splash-pulse 1.2s ease-in-out infinite}.splash__dot:nth-child(2){animation-delay:.2s}.splash__dot:nth-child(3){animation-delay:.4s}@keyframes splash-pulse{0%,80%,to{opacity:.3;transform:scale(.8)}40%{opacity:1;transform:scale(1.2)}}.topbar{display:flex;align-items:center;justify-content:space-between;height:56px;padding:0 var(--space-4);background:var(--color-surface);border-bottom:1px solid var(--color-border);position:sticky;top:0;z-index:100}.topbar__left,.topbar__right{width:110px;display:flex;align-items:center}.topbar__right{justify-content:flex-end}.topbar__back{display:flex;align-items:center;justify-content:center;height:40px;padding:0 16px;font:var(--font-body);font-weight:700;gap:4px;color:var(--color-surface);background-color:var(--color-primary-600);border-radius:20px;box-shadow:0 2px 4px #0000001a;white-space:nowrap}.topbar__back span.arrow{font-size:18px;line-height:1;margin-bottom:2px}.topbar__back:active{background:var(--color-surface-sunken)}.topbar__title{font:var(--font-heading-2);color:var(--color-text-primary);text-align:center;flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.login{display:flex;flex-direction:column;justify-content:center;gap:var(--space-8);padding-top:20vh}.login__guide{text-align:center}.login__heading{font:var(--font-heading-1);color:var(--color-text-primary);margin-bottom:var(--space-3)}.login__sub{font:var(--font-body);color:var(--color-text-secondary)}.login__buttons{display:flex;flex-direction:column;gap:var(--space-3);padding:0 var(--space-4)}.login__error{text-align:center;font:var(--font-body);color:var(--color-danger-600);padding:var(--space-3)}.pwa-prompt-overlay{position:fixed;top:0;left:0;width:100%;height:100%;background:#00000080;display:flex;align-items:center;justify-content:center;z-index:9999;animation:pwaFadeIn .3s ease-out}@keyframes pwaFadeIn{0%{opacity:0}to{opacity:1}}.pwa-prompt-modal{background:var(--color-surface);border-radius:var(--radius-lg);width:90%;max-width:400px;box-shadow:var(--shadow-lg);overflow:hidden}.pwa-prompt-header{padding:16px 20px;display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid var(--color-border)}.pwa-prompt-header h3{margin:0;font-size:18px;font-weight:700;color:var(--color-text-primary)}.pwa-prompt-close{background:transparent;border:none;font-size:20px;color:var(--color-text-secondary);cursor:pointer;padding:4px}.pwa-prompt-body{padding:20px}.pwa-prompt-body>p{margin-top:0;margin-bottom:16px;line-height:1.5;color:var(--color-text-secondary);text-align:center}.pwa-prompt-instructions{background:var(--color-background);padding:16px;border-radius:var(--radius-md);font-size:14px;line-height:1.6}.pwa-prompt-instructions p{margin:0}.pwa-prompt-instructions p+p{margin-top:8px}.pwa-prompt-footer{padding:16px 20px;border-top:1px solid var(--color-border)}.pwa-prompt-btn{width:100%;background:var(--color-primary-600);color:#fff;border:none;border-radius:var(--radius-button);padding:12px;font-size:16px;font-weight:600;cursor:pointer}.pwa-prompt-btn:hover{background:var(--color-primary-700)}