.lesson-grid{grid-template-columns:repeat(3,1fr)}.lesson-card,.lesson-card:nth-child(4),.lesson-card:nth-child(5){grid-column:span 1}@media (max-width:900px){.lesson-grid{grid-template-columns:1fr}}.student-login{grid-template-columns:auto minmax(280px,1fr) minmax(300px,.75fr);align-items:center;gap:max(24px,min(5vw,70px));min-height:calc(100vh - 74px);padding:60px 0;display:grid}.login-mark{border:2px solid var(--gold);width:120px;height:120px;color:var(--red);border-radius:50%;place-items:center;font:700 58px Noto Serif TC,serif;display:grid;box-shadow:0 0 0 12px rgba(165,42,36,.043)}.login-copy h1{font-size:max(40px,min(6vw,72px))}.login-copy>p:last-child{color:#5d4a3b;max-width:560px;font-size:19px}.student-login-form{border:1px solid var(--line);border-top:5px solid var(--red);background:var(--cream);border-radius:12px;gap:16px;padding:28px;display:grid;box-shadow:0 20px 45px rgba(59,33,23,.098)}.student-login-form label{color:#5d4a3b;gap:7px;font-weight:800;display:grid}.student-login-form select{border:1px solid var(--line);width:100%;min-height:52px;color:var(--ink);background:#fff;border-radius:8px;padding:10px 12px;font:700 17px inherit}.student-login-form .button{cursor:pointer;border:0}.student-login-form p{min-height:24px;color:var(--red);margin:0}.student-session-bar{border:1px solid var(--line);background:#fff8e9;border-radius:10px;justify-content:space-between;align-items:center;gap:20px;margin:28px 0 12px;padding:14px 18px;display:flex}.student-session-bar div{align-items:center;gap:13px;display:flex}.student-session-bar span{background:var(--ink);color:var(--cream);border-radius:999px;padding:7px 11px;font-weight:800}.student-session-bar button{color:var(--red);cursor:pointer;background:0 0;border:0;font:700 14px inherit}.classroom-modules{border-bottom:1px solid var(--line);padding:40px 0 48px}.module-grid{grid-template-columns:repeat(3,1fr);gap:14px;display:grid}.module-card{border:1px solid var(--line);background:var(--cream);border-radius:13px;flex-direction:column;min-height:260px;padding:22px;text-decoration:none;display:flex;position:relative;overflow:hidden}.module-card.is-open:hover{transform:translateY(-3px);box-shadow:0 14px 30px rgba(75,43,24,.125)}.module-card.is-open{border-top:5px solid var(--red)}.module-card.is-locked{filter:saturate(.55);color:#6b6258;background:#dfd8ca}.module-number{color:var(--red);font:800 25px Noto Serif TC,serif}.module-status{color:var(--jade);background:rgba(30,107,98,.08);border-radius:999px;padding:5px 9px;font-size:13px;font-weight:800;position:absolute;top:20px;right:18px}.is-locked .module-status{color:#675e55;background:rgba(0,0,0,.05)}.module-card h3{margin:38px 0 5px;font-size:32px}.module-card p{color:#5d4a3b;margin:0;line-height:1.6}.module-card strong{color:var(--red);margin-top:auto;padding-top:20px}.is-locked strong{color:#675e55}@media (max-width:850px){.student-login{grid-template-columns:1fr}.login-mark{width:82px;height:82px;font-size:40px}.module-grid{grid-template-columns:1fr}.module-card{min-height:210px}}@media (max-width:560px){.student-session-bar,.student-session-bar div{flex-direction:column;align-items:flex-start}.student-login{padding:32px 0}.student-login-form{padding:20px}}