.cooperation-hero{background:#e8f1e9}.cooperation-choices{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}.cooperation-choice{border-radius:20px;padding:28px;min-height:250px;display:flex;flex-direction:column;align-items:flex-start;text-align:left}.cooperation-choice.student{background:#e1efe5}.cooperation-choice.promotion{background:#173f36;color:white;border-color:#173f36}.cooperation-choice h3{font-size:34px;margin:14px 0}.cooperation-choice p{line-height:1.7;max-width:360px}.cooperation-choice strong{margin-top:auto;padding-top:20px}.cooperation-kicker{font-size:11px;letter-spacing:2px;opacity:.72}.cooperation-back{margin-bottom:20px}.invite-code{font-size:30px;letter-spacing:2px;font-weight:700;overflow-wrap:anywhere;padding:20px 0;color:var(--green)}.cooperation-summary{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;margin:18px 0}.cooperation-stat{padding:18px;background:#f0f7f1;border-radius:12px}.cooperation-stat strong{display:block;font-size:25px}.cooperation-tier-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}.cooperation-tier{padding:24px;background:var(--white);border:1px solid var(--line);border-radius:16px}.cooperation-tier h3{font-size:23px}.cooperation-tier .fee{font-size:30px;color:var(--green);font-weight:700}.cooperation-tier p{margin:8px 0}.cooperation-tier button{margin-top:15px;width:100%}.cooperation-referrals{display:grid;gap:10px;margin-top:14px}.cooperation-note{margin-top:18px;color:var(--muted);font-size:13px}.cooperation-action-row{display:flex;gap:10px;flex-wrap:wrap}@media(max-width:800px){.cooperation-choices,.cooperation-tier-grid{grid-template-columns:1fr}}@media(max-width:600px){.cooperation-summary{grid-template-columns:1fr}}