:root{--sm-bg:#09090b;--sm-surface:#141416;--sm-surface-hover:#1c1c1f;--sm-border:rgba(255,255,255,0.12);--sm-border-light:rgba(255,255,255,0.06);--sm-text:#ffffff;--sm-text-secondary:#a1a1aa;--sm-text-muted:#71717a;--sm-accent:#2563eb;--sm-radius-sm:8px;--sm-radius-md:12px;--sm-radius-lg:16px;--sm-font-sans:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Be Vietnam Pro",sans-serif}[data-theme="light"]{--sm-bg:#f8fafc;--sm-surface:#ffffff;--sm-surface-hover:#f1f5f9;--sm-border:rgba(0,0,0,0.1);--sm-text:#0f172a;--sm-text-secondary:#475569;--sm-text-muted:#94a3b8}.sm-card{background:var(--sm-surface);border:1px solid var(--sm-border);border-radius:var(--sm-radius-md);padding:24px;color:var(--sm-text);box-shadow:0 8px 24px rgba(0,0,0,0.4)}.sm-btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-family:var(--sm-font-sans);font-weight:600;font-size:13.5px;padding:10px 18px;border-radius:var(--sm-radius-sm);border:1px solid transparent;cursor:pointer;transition:all 0.15s ease;text-decoration:none}.sm-btn-primary{background:#ffffff;color:#09090b}.sm-btn-primary:hover{background:#f4f4f5;transform:translateY(-1px)}