*,:before,:after{box-sizing:border-box;margin:0;padding:0}:root{--color-bg:#fff9f9;--color-text:#4a2c2c;--color-text-light:#7a5c5c;--color-primary:#e6678c;--color-primary-hover:#c94d6e;--color-border:#f5d6dc;--color-header-bg:#fff0f3;--color-footer-bg:#fce4ec;--color-card-bg:#fff;--color-input-bg:#fff;--space-xs:.25rem;--space-sm:.5rem;--space-md:1rem;--space-lg:2rem;--space-xl:3rem;--font-family:system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;--font-size-base:1rem;--font-size-lg:1.25rem;--font-size-xl:2rem;--font-size-h1:2.5rem;--line-height:1.6;--max-width:65ch;--border-radius:.25rem}[data-theme=dark]{--color-bg:#2b1a1a;--color-text:#f5e3e3;--color-text-light:#c9adad;--color-primary:#ff8da1;--color-primary-hover:#ff6b7f;--color-border:#5a3030;--color-header-bg:#3d2424;--color-footer-bg:#3d2424;--color-card-bg:#4a2e2e;--color-input-bg:#3d2424}html{font-size:100%}body{font-family:var(--font-family);font-size:var(--font-size-base);line-height:var(--line-height);color:var(--color-text);background-color:var(--color-bg);flex-direction:column;min-height:100vh;transition:background-color .3s,color .3s;display:flex}a{color:var(--color-primary)}a:hover{color:var(--color-primary-hover)}img{border-radius:var(--border-radius);max-width:100%;height:auto}h1{font-size:clamp(1.8rem, 5vw, var(--font-size-h1));margin-bottom:var(--space-md);line-height:1.2}h2{font-size:clamp(1.3rem, 3vw, var(--font-size-xl));margin:var(--space-lg) 0 var(--space-sm)}h3{font-size:var(--font-size-lg);margin-bottom:var(--space-xs)}p{margin-bottom:var(--space-md)}button{cursor:pointer}input,textarea{width:100%;padding:var(--space-sm);border:1px solid var(--color-border);border-radius:var(--border-radius);font-family:inherit;font-size:inherit;background-color:var(--color-input-bg);color:var(--color-text)}h1,h2,h3{font-family:var(--font-serif), Georgia, "楷体", KaiTi, serif}