:root{--game-header-height: 112px;--color-primary: #E57373;--color-primary-light: #FFAB91;--color-primary-dark: #D32F2F;--color-primary-soft: #FFCDD2;--color-accent: #FFB74D;--color-accent-light: #FFE0B2;--color-accent-dark: #FF9800;--color-bg-base: #FFF8F6;--color-bg-card: #FFFFFF;--color-bg-gradient-start: #FFF0ED;--color-bg-gradient-end: #FFE4E1;--color-text-primary: #424242;--color-text-secondary: #757575;--color-text-muted: #9E9E9E;--color-text-inverse: #FFFFFF;--color-success: #81C784;--color-success-light: #C8E6C9;--color-error: #EF5350;--color-error-light: #FFCDD2;--color-warning: #FFB74D;--color-mode1: #E57373;--color-mode2: #FFB74D;--color-mode3: #9E9E9E;--color-locked: #BDBDBD;--shadow-sm: 0 1px 3px rgba(0, 0, 0, .08);--shadow-md: 0 4px 12px rgba(0, 0, 0, .1);--shadow-lg: 0 8px 24px rgba(0, 0, 0, .12);--shadow-card: 0 2px 8px rgba(229, 115, 115, .15);--radius-sm: 8px;--radius-md: 12px;--radius-lg: 16px;--radius-xl: 24px;--radius-full: 9999px;--space-xs: 4px;--space-sm: 8px;--space-md: 16px;--space-lg: 24px;--space-xl: 32px;--space-2xl: 48px;--space-3xl: 64px;--font-family-sans: "Inter", "Noto Sans JP", system-ui, -apple-system, sans-serif;--font-size-xs: .75rem;--font-size-sm: .875rem;--font-size-base: 1rem;--font-size-lg: 1.125rem;--font-size-xl: 1.25rem;--font-size-2xl: 1.5rem;--font-size-3xl: 2rem;--font-size-4xl: 2.5rem;--font-size-5xl: 3rem;--font-weight-normal: 400;--font-weight-medium: 500;--font-weight-semibold: 600;--font-weight-bold: 700;--line-height-tight: 1.2;--line-height-normal: 1.5;--line-height-relaxed: 1.75;--transition-fast: .15s ease;--transition-normal: .25s ease;--transition-slow: .35s ease;--z-dropdown: 100;--z-modal: 200;--z-tooltip: 300}:root[data-theme=choice]{--color-primary: #F79800;--color-primary-light: #FFD27A;--color-primary-dark: #D87E00;--color-primary-soft: #FFE6BD;--color-bg-gradient-start: #FFF1B8;--color-bg-gradient-end: #FFE082}@media(max-width:768px){:root{--game-header-height: 76px}}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{font-size:16px;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body{font-family:var(--font-family-sans);font-size:var(--font-size-base);line-height:var(--line-height-normal);color:var(--color-text-primary);background:linear-gradient(135deg,var(--color-bg-gradient-start) 0%,var(--color-bg-gradient-end) 100%);min-height:100vh}#root{min-height:100vh;display:flex;flex-direction:column}h1,h2,h3,h4,h5,h6{font-weight:var(--font-weight-bold);line-height:var(--line-height-tight);color:var(--color-text-primary)}h1{font-size:var(--font-size-4xl)}h2{font-size:var(--font-size-3xl)}h3{font-size:var(--font-size-2xl)}h4{font-size:var(--font-size-xl)}a{color:var(--color-primary);text-decoration:none;transition:color var(--transition-fast)}a:hover{color:var(--color-primary-dark)}:focus-visible{outline:2px solid var(--color-primary);outline-offset:2px}::selection{background-color:var(--color-primary-soft);color:var(--color-text-primary)}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:var(--color-bg-base)}::-webkit-scrollbar-thumb{background:var(--color-primary-soft);border-radius:var(--radius-full)}::-webkit-scrollbar-thumb:hover{background:var(--color-primary-light)}.container{width:100%;max-width:1200px;margin:0 auto;padding:0 var(--space-md)}.flex{display:flex}.flex-center{display:flex;align-items:center;justify-content:center}.flex-between{display:flex;align-items:center;justify-content:space-between}.flex-col{display:flex;flex-direction:column}.gap-xs{gap:var(--space-xs)}.gap-sm{gap:var(--space-sm)}.gap-md{gap:var(--space-md)}.gap-lg{gap:var(--space-lg)}.gap-xl{gap:var(--space-xl)}.text-center{text-align:center}.text-left{text-align:left}.text-right{text-align:right}.text-xs{font-size:var(--font-size-xs)}.text-sm{font-size:var(--font-size-sm)}.text-base{font-size:var(--font-size-base)}.text-lg{font-size:var(--font-size-lg)}.text-xl{font-size:var(--font-size-xl)}.text-2xl{font-size:var(--font-size-2xl)}.text-3xl{font-size:var(--font-size-3xl)}.text-4xl{font-size:var(--font-size-4xl)}.text-5xl{font-size:var(--font-size-5xl)}.font-medium{font-weight:var(--font-weight-medium)}.font-semibold{font-weight:var(--font-weight-semibold)}.font-bold{font-weight:var(--font-weight-bold)}.text-primary{color:var(--color-text-primary)}.text-secondary{color:var(--color-text-secondary)}.text-muted{color:var(--color-text-muted)}.text-accent{color:var(--color-accent)}.text-success{color:var(--color-success)}.text-error{color:var(--color-error)}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes fadeInUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}@keyframes fadeInDown{0%{opacity:0;transform:translateY(-20px)}to{opacity:1;transform:translateY(0)}}@keyframes scaleIn{0%{opacity:0;transform:scale(.9)}to{opacity:1;transform:scale(1)}}@keyframes pulse{0%,to{opacity:1}50%{opacity:.5}}@keyframes shake{0%,to{transform:translate(0)}10%,30%,50%,70%,90%{transform:translate(-4px)}20%,40%,60%,80%{transform:translate(4px)}}@keyframes bounce{0%,to{transform:translateY(0)}50%{transform:translateY(-6px)}}@keyframes correctFlash{0%{background-color:transparent}50%{background-color:var(--color-success-light)}to{background-color:transparent}}@keyframes errorFlash{0%{background-color:transparent}50%{background-color:var(--color-error-light)}to{background-color:transparent}}@keyframes soundWave{0%{transform:scale(1);opacity:1}to{transform:scale(1.5);opacity:0}}.animate-fade-in{animation:fadeIn var(--transition-normal)}.animate-fade-in-up{animation:fadeInUp var(--transition-normal)}.animate-fade-in-down{animation:fadeInDown var(--transition-normal)}.animate-scale-in{animation:scaleIn var(--transition-normal)}.animate-pulse{animation:pulse 2s infinite}.animate-shake{animation:shake .5s ease-in-out}.animate-bounce{animation:bounce .5s ease-in-out}