:root{--color-primary:#3b9eff;--color-primary-hover:#1f7fde;--color-primary-light:#ebf5ff;--color-primary-text:#1a6fc2;--color-accent:#6c5ce7;--color-accent-hover:#5a4bd1;--color-accent-light:#eeeafd;--color-secondary:#64748b;--color-secondary-hover:#475569;--color-success:#0d9b5c;--color-success-light:#e6f9f0;--color-danger:#d93025;--color-danger-hover:#b8251c;--color-danger-light:#fde8e6;--color-warning:#e8a500;--color-warning-light:#fff8e1;--color-info:#1a73e8;--color-info-light:#e8f0fe;--color-bg-primary:#fbfcfe;--color-bg-secondary:#f4f7fb;--color-bg-tertiary:#edf1f7;--color-text-primary:#0f172a;--color-text-secondary:#475569;--color-text-muted:#94a3b8;--color-text-inverse:#fbfcfe;--color-border:#e2e8f0;--color-border-focus:#3b9eff;--space-1:.25rem;--space-2:.5rem;--space-3:.75rem;--space-4:1rem;--space-5:1.25rem;--space-6:1.5rem;--space-8:2rem;--space-10:2.5rem;--space-12:3rem;--space-16:4rem;--space-20:5rem;--space-24:6rem;--font-sans:"Noto Sans SC","PingFang SC",-apple-system,BlinkMacSystemFont,sans-serif;--font-display:"Noto Sans SC","PingFang SC",-apple-system,BlinkMacSystemFont,sans-serif;--font-mono:"JetBrains Mono","SF Mono",monospace;--text-xs:.75rem;--text-sm:.875rem;--text-base:1rem;--text-lg:1.125rem;--text-xl:clamp(1.25rem,1.1rem + .5vw,1.5rem);--text-2xl:clamp(1.5rem,1.3rem + .75vw,1.875rem);--text-3xl:clamp(1.875rem,1.5rem + 1.25vw,2.5rem);--text-4xl:clamp(2.25rem,1.75rem + 2vw,3.25rem);--text-5xl:clamp(2.75rem,2rem + 2.5vw,4rem);--line-height-tight:1.15;--line-height-normal:1.5;--line-height-relaxed:1.7;--font-weight-normal:400;--font-weight-medium:500;--font-weight-semibold:600;--font-weight-bold:700;--font-weight-black:900;--letter-spacing-tight:-.025em;--letter-spacing-normal:0;--letter-spacing-wide:.05em;--radius-sm:.375rem;--radius-md:.5rem;--radius-lg:.75rem;--radius-xl:1rem;--radius-2xl:1.25rem;--radius-full:9999px;--shadow-sm:0 1px 2px #0f172a0a;--shadow-md:0 4px 12px -2px #0f172a14,0 2px 4px -2px #0f172a0a;--shadow-lg:0 12px 24px -4px #0f172a1a,0 4px 8px -4px #0f172a0a;--shadow-xl:0 24px 48px -8px #0f172a1f,0 8px 16px -6px #0f172a0f;--shadow-primary:0 4px 14px -2px #3b9eff59;--shadow-accent:0 4px 14px -2px #6c5ce740;--transition-fast:.15s cubic-bezier(.4,0,.2,1);--transition-normal:.25s cubic-bezier(.4,0,.2,1);--transition-slow:.4s cubic-bezier(.4,0,.2,1);--ease-out-expo:cubic-bezier(.16,1,.3,1);--ease-out-quart:cubic-bezier(.25,1,.5,1);--container-max:1200px;--container-padding:clamp(1rem,3vw,2rem)}*,:before,:after{box-sizing:border-box;margin:0;padding:0}html{-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;scroll-behavior:smooth;font-size:16px}body{font-family:var(--font-sans);color:var(--color-text-primary);background-color:var(--color-bg-primary);line-height:var(--line-height-normal);min-height:100vh}a{color:var(--color-primary-text);transition:color var(--transition-fast);text-decoration:none}a:hover{text-decoration:underline}img{max-width:100%;height:auto}input,textarea,button,select{font-family:inherit;font-size:inherit}::selection{background-color:var(--color-primary);color:var(--color-text-inverse)}.container{max-width:var(--container-max);padding-left:var(--container-padding);padding-right:var(--container-padding);margin:0 auto}.sr-only{clip:rect(0,0,0,0);white-space:nowrap;border:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}