.ss-intro{--bg:#fafafa;--line:#e5e7eb;--text:#000;--accent:#6d6d6d}
    .ss-intro .card{
      background:var(--bg);border:1px solid var(--line);border-left:4px solid var(--accent);
      border-radius:14px;padding:14px 16px;color:var(--text);
      font:600 15px/1.55 system-ui,-apple-system,"Segoe UI",Roboto,Arial;
      box-shadow:0 2px 8px rgba(16,24,40,.14),0 6px 18px rgba(16,24,40,.08)
    }
    @media (max-width:640px){.ss-intro .card{font-size:14px}}