:root{--color-primary: #2F6BFF;--color-accent: #FF8A00;--color-success: #1FA463;--color-error: #E5484D;--color-text: #1F2329;--color-text-secondary: #646A73;--color-border: #DEE0E3;--color-bg: #F5F6F7;--font-sans: "Inter", "Noto Sans SC", system-ui, sans-serif;--font-mono: "JetBrains Mono", monospace;--font-read-sm: 18px;--font-read-md: 20px;--font-read-lg: 22px;--font-size-body: 16px;--font-size-aux: 14px;--font-size-title: 20px;--font-size-number: 32px;--space-1: 4px;--space-2: 8px;--space-3: 12px;--space-4: 16px;--space-6: 24px;--space-8: 32px;--radius-card: 12px;--radius-btn: 8px;--radius-overlay: 16px;--tap-min: 44px;--shadow-sm: 0 1px 2px rgba(0,0,0,.05);--shadow-md: 0 4px 12px rgba(0,0,0,.08);--shadow-lg: 0 8px 24px rgba(0,0,0,.12)}*{box-sizing:border-box;margin:0;padding:0}html{font-size:var(--font-size-body);font-family:var(--font-sans);color:var(--color-text);background:var(--color-bg);-webkit-font-smoothing:antialiased}body{min-height:100dvh}[hidden]{display:none!important}button,a,[role=button]{transition:background .2s ease,opacity .2s ease,transform .2s ease}@keyframes countUp{0%{opacity:.3;transform:translateY(4px)}to{opacity:1;transform:translateY(0)}}.count-up{animation:countUp .3s ease}.side-nav{display:none}.bottom-nav{display:flex}@media(min-width:600px){.side-nav{display:block}.bottom-nav{display:none}main{padding:24px}}.card{background:#fff;border:1px solid var(--color-border);border-radius:var(--radius-card);padding:var(--space-4);margin-bottom:var(--space-4);box-shadow:var(--shadow-sm)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:var(--tap-min);padding:0 16px;border-radius:var(--radius-btn);font-size:var(--font-size-body);font-weight:600;border:none;cursor:pointer;background:var(--color-primary);color:#fff}.btn:disabled{background:var(--color-border);color:var(--color-text-secondary);cursor:not-allowed}.btn-accent{background:var(--color-accent);color:#fff}.btn-outline{background:transparent;border:1px solid var(--color-border);color:var(--color-text)}.number-emphasis{font-size:var(--font-size-number);font-weight:700;color:var(--color-accent)}.progress-track{background:var(--color-border);border-radius:999px;height:8px;overflow:hidden}.progress-fill{background:var(--color-primary);height:100%;transition:width .3s ease}.page-title{font-size:var(--font-size-title);font-weight:700;margin-bottom:var(--space-4)}.section-title{font-size:18px;font-weight:600;margin:var(--space-4) 0 var(--space-3)}