.app-shell{width:100%;min-height:100dvh}:root{--color-primary: #2D5A4A;--color-primary-dark: #24493D;--color-primary-soft: #E3ECE7;--color-accent: #D4915D;--color-gold: #C9A961;--color-paper: #FAF8F5;--color-card: #FFFFFF;--color-ink: #2C3E50;--color-success: #66A15E;--color-ok: #7ED321;--color-warn: #F5A623;--color-err: #F5A623;--color-line: #E8E1D7;--text-muted: #7A8699;--text-strong: #2C3E50;--color-success-soft: #EAF4E6;--color-warn-soft: #FDF1DE;--domain-na: #2D5A4A;--domain-gm: #4A90A4;--domain-sp: #C9A961;--domain-cp: #D4915D;--radius-lg: 20px;--radius-md: 14px;--radius-sm: 10px;--shadow-card: 0 2px 12px rgba(44, 42, 38, .08);--dur-snap: .2s;--dur-puzzle: .5s;--dur-hint: .3s;--dur-page: .2s;--font-body: "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;--font-num: "SF Mono", "Cascadia Mono", Consolas, "Courier New", monospace;--touch-min: 80px;--touch-low: 100px;--fs-child: 24px;--fs-low: 28px}*{box-sizing:border-box;margin:0;padding:0;-webkit-tap-highlight-color:transparent}html,body{font-family:var(--font-body);background:var(--color-paper);color:var(--color-ink);font-size:16px;line-height:1.6;overscroll-behavior-y:none}#app{width:100%;max-width:720px;margin:0 auto;min-height:100dvh}button{font-family:inherit;border:none;background:none;cursor:pointer;touch-action:manipulation}button,[role=button]{min-height:var(--touch-min)}button:active{transform:scale(.98);transition:transform var(--dur-snap)}@media (prefers-reduced-motion: reduce){*{animation-duration:.01ms!important;transition-duration:.01ms!important}}