:root{--color-text:#f4f5f6;--color-text-muted:#a0a4ad;--color-bg:#19191c;--color-surface:#26282e;--color-border:#383a42;--color-primary:#588bff;--color-primary-ink:#fff;--gradient-accent:linear-gradient(90deg,#765bff,#ff45a0);--space-1:4px;--space-2:8px;--space-3:12px;--space-4:16px;--space-5:24px;--space-6:32px;--space-8:48px;--text-sm:14px;--text-base:16px;--text-lg:20px;--text-xl:28px;--text-2xl:40px;--radius:4px;--shadow-md:0 8px 24px rgba(0,0,0,.4);--container:1120px}*{box-sizing:border-box}body,html{margin:0;padding:0}body{font-family:Inter,PingFang SC,Microsoft YaHei,system-ui,sans-serif;color:var(--color-text);background:var(--color-bg);font-size:var(--text-base);line-height:1.6;color-scheme:dark}a{color:inherit;text-decoration:none}.container{max-width:var(--container);margin:0 auto;padding:0 var(--space-5)}.grid{display:grid;gap:var(--space-5);grid-template-columns:repeat(3,1fr)}@media(max-width:900px){.grid{grid-template-columns:repeat(2,1fr)}}@media(max-width:600px){.grid{grid-template-columns:1fr}}:focus-visible{outline:2px solid var(--color-primary);outline-offset:2px}.skip-link{position:absolute;left:-9999px;top:0;z-index:100;padding:var(--space-2) var(--space-4);background:var(--color-primary);color:var(--color-primary-ink);border-radius:var(--radius)}.skip-link:focus{left:var(--space-3);top:var(--space-3)}.visually-hidden{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}