:root{--color-primary:#f97316;--color-primary-hover:#ea580c;--color-primary-deep:#c2410c;--color-primary-soft:#fff7ed;--color-primary-border:#fed7aa;--color-text:#1f2937;--color-text-secondary:#374151;--color-text-muted:#4b5563;--color-text-light:#6b7280;--color-text-faint:#9ca3af;--color-bg:#ffffff;--color-bg-soft:#fafafa;--color-bg-muted:#f3f4f6;--color-bg-section:linear-gradient(180deg,#fffbf5,#fff);--color-border:#e5e7eb;--color-border-light:#f3f4f6;--color-border-strong:#d1d5db;--color-success:#10b981;--color-warning:#f59e0b;--color-danger:#ef4444;--color-danger-deep:#dc2626;--color-info:#3b82f6;--font-size-xs:0.72rem;--font-size-sm:0.85rem;--font-size-base:0.95rem;--font-size-md:1rem;--font-size-lg:1.15rem;--font-size-xl:1.4rem;--font-size-2xl:1.75rem;--font-size-3xl:2.25rem;--line-height-tight:1.3;--line-height-normal:1.6;--line-height-relaxed:1.75;--font-weight-normal:400;--font-weight-semi:600;--font-weight-bold:700;--font-weight-black:800;--space-xs:4px;--space-sm:8px;--space-md:12px;--space-lg:16px;--space-xl:24px;--space-2xl:32px;--space-3xl:48px;--space-4xl:64px;--radius-sm:6px;--radius-md:10px;--radius-lg:14px;--radius-xl:20px;--radius-full:999px;--shadow-sm:0 1px 3px rgba(0,0,0,0.05);--shadow-md:0 4px 12px rgba(0,0,0,0.08);--shadow-lg:0 10px 30px rgba(0,0,0,0.12);--shadow-primary:0 6px 18px rgba(249,115,22,0.25);--shadow-primary-soft:0 4px 14px rgba(249,115,22,0.15);--shadow-card-hover:0 10px 28px rgba(0,0,0,0.1);--transition-fast:0.15s ease;--transition-normal:0.25s ease;--transition-slow:0.4s ease;--container-max:1200px;--content-max:880px}*{box-sizing:border-box;margin:0;padding:0}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}a{color:inherit;text-decoration:none}