.epla-topic-board{--ink:#24384b;--green:#52765c;--blue:#557b9f;--line:#dce5de;max-width:1100px;margin:0 auto;padding:18px 20px 60px;color:#38433f;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Noto Sans JP","Hiragino Kaku Gothic ProN",Meiryo,sans-serif}
.epla-topic-board *{box-sizing:border-box}
.epla-topic-hero{padding:34px 38px;border:1px solid var(--line);border-radius:25px;background:linear-gradient(135deg,#f5f2e9,#eaf3e9);box-shadow:0 12px 32px rgba(45,68,53,.08)}
.epla-topic-board.is-advanced .epla-topic-hero{background:linear-gradient(135deg,#f2f5f9,#e9f0f7)}
.epla-topic-hero>div:first-child{display:flex;align-items:center;justify-content:space-between;gap:16px}
.epla-topic-hero span{display:inline-flex;padding:6px 11px;border-radius:999px;background:#dceadf;color:#41674c;font-size:11px;font-weight:850;letter-spacing:.06em}
.is-advanced .epla-topic-hero span{background:#dfe9f3;color:#456b8d}
.epla-topic-hero p{margin:0;color:#718077;font-size:13px}
.epla-topic-hero>small{display:block;margin-top:32px;color:#7c887f;font-size:11px;font-weight:850;letter-spacing:.13em}
.epla-topic-hero h1{max-width:850px;margin:9px 0 18px;color:var(--ink);font-size:clamp(34px,5vw,52px);line-height:1.25}
.epla-topic-theme{display:inline-block;padding:9px 13px;border-radius:11px;background:#fff;font-size:13px}
.epla-topic-grid{display:grid;grid-template-columns:minmax(0,1.35fr) minmax(300px,.65fr);gap:18px;margin-top:20px}
.epla-topic-side{display:grid;align-content:start;gap:18px}
.epla-topic-card{padding:24px;border:1px solid var(--line);border-radius:20px;background:#fff;box-shadow:0 8px 24px rgba(45,68,53,.055)}
.epla-topic-card h2{display:flex;align-items:center;gap:9px;margin:0 0 17px;color:var(--ink);font-size:22px}
.epla-topic-card h2 span{display:grid;place-items:center;width:37px;height:37px;border-radius:11px;background:#edf4ed;font-size:18px}
.epla-topic-card ul{display:grid;gap:0;margin:0;padding:0;list-style:none}
.epla-topic-card li{position:relative;margin:0;padding:10px 5px 10px 24px;border-top:1px solid #edf1ee;line-height:1.65}
.epla-topic-card li:first-child{border-top:0}
.epla-topic-card li:before{position:absolute;left:5px;top:17px;width:7px;height:7px;border-radius:50%;background:var(--green);content:""}
.is-advanced .epla-topic-card li:before{background:var(--blue)}
.epla-topic-card.is-expressions{background:#f5f8f4}
.epla-topic-card.is-tips{background:#fbf7ed}
.epla-topic-card.is-expressions li,.epla-topic-card.is-tips li{font-size:14px}
.epla-topic-empty{margin-top:20px;padding:30px;border:1px dashed var(--line);border-radius:20px;text-align:center}
@media(max-width:760px){.epla-topic-board{padding:8px 13px 44px}.epla-topic-hero{padding:25px 21px;border-radius:21px}.epla-topic-hero>div:first-child{display:block}.epla-topic-hero p{margin-top:7px}.epla-topic-hero>small{margin-top:24px}.epla-topic-hero h1{font-size:32px}.epla-topic-grid{grid-template-columns:1fr}.epla-topic-card{padding:20px 17px}.epla-topic-card h2{font-size:20px}.epla-topic-card li{font-size:15px}}