:root{--navy:#10234f;--blue:#2f7cf4;--orange:#ff7a24;--green:#16a064;--purple:#7455d9;--pink:#ed5aa5;--gold:#f6bd38;--line:#e2e8f2;--muted:#62708a}.math-wrap{max-width:1460px;margin:auto;padding:24px 22px 70px}.math-hero{display:grid;grid-template-columns:1.05fr .95fr;gap:22px;align-items:center;padding:30px;border:1px solid var(--line);border-radius:32px;background:linear-gradient(135deg,#fff 0%,#fff 62%,#edf5ff 100%);box-shadow:0 16px 44px rgba(28,48,86,.1)}.math-hero h1{font-size:clamp(40px,5vw,66px);line-height:.98;letter-spacing:-2.5px;margin:13px 0}.math-hero p{font-size:18px;line-height:1.55;color:#52627d}.hero-img{height:310px;border-radius:26px;overflow:hidden;position:relative}.hero-img img{width:100%;height:100%;object-fit:cover}.hero-img .bubble{position:absolute;right:18px;top:18px;max-width:270px;background:#fff;border:3px solid var(--navy);border-radius:22px;padding:14px;font-weight:1000}.tag{display:inline-flex;padding:9px 14px;border-radius:999px;background:#eaf3ff;color:#1769d7;font-weight:1000;font-size:14px}.pills{display:flex;gap:8px;flex-wrap:wrap;margin-top:15px}.pills span{padding:8px 11px;border-radius:999px;background:#fff;border:1px solid var(--line);font-size:13px;font-weight:900}.login-callout{margin:18px 0;padding:18px;border:1px solid #d7e5ff;border-radius:22px;background:linear-gradient(135deg,#edf5ff,#fff);display:grid;grid-template-columns:1fr auto;gap:15px;align-items:center}.login-callout h3{margin:0 0 5px;font-size:22px}.login-callout p{margin:0;color:#5f6f89}.login-actions{display:flex;gap:8px;flex-wrap:wrap}.login-actions button,.login-actions a{border:0;border-radius:13px;padding:11px 14px;font-weight:1000;cursor:pointer}.login-actions .primary{background:#1769d7;color:white}.login-actions .ghost{background:white;color:#1769d7;border:1px solid #d6e5ff}.tools{display:flex;gap:9px;flex-wrap:wrap;margin:18px 0;padding:11px;background:#fff;border:1px solid var(--line);border-radius:19px}.tools button,.tools a{border:0;border-radius:13px;padding:10px 13px;background:#f4f7fc;color:#33496d;font-weight:1000;cursor:pointer}.tools .help{background:#fff0f4;color:#c93e77}.grid{display:grid;grid-template-columns:minmax(0,1fr) 330px;gap:20px}.main{display:grid;gap:20px}.side{display:grid;gap:14px;height:max-content;position:sticky;top:90px}.box,.sidebox{background:#fff;border:1px solid var(--line);border-radius:26px;padding:21px;box-shadow:0 12px 30px rgba(28,48,86,.07)}.head{display:flex;gap:11px;align-items:center;margin-bottom:15px}.num{width:43px;height:43px;border-radius:15px;background:linear-gradient(135deg,var(--blue),#69a4ff);color:white;display:grid;place-items:center;font-weight:1000;font-size:20px}.head h2{margin:0;font-size:27px}.head p{margin:2px 0 0;color:var(--muted)}.tabs{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:14px}.tabs button{padding:9px 12px;border:1px solid var(--line);border-radius:12px;background:#f7faff;color:#51627f;font-weight:900;cursor:pointer}.tabs button.active{background:#eaf3ff;color:#1769d7}.panel{display:none}.panel.active{display:block}.keygrid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}.key{padding:15px;border-radius:18px;background:#f9fbff;border:1px solid var(--line)}.key strong{display:block;margin-bottom:6px}.key span{color:#5d6d87;line-height:1.45}.method{display:grid;gap:10px}.step{display:grid;grid-template-columns:42px 1fr;gap:10px;padding:13px;border-radius:17px;background:#f8fbff;border:1px solid var(--line)}.step b{width:40px;height:40px;border-radius:13px;background:#1769d7;color:#fff;display:grid;place-items:center}.step p{margin:2px 0 0;color:#5e6e87}.comics{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.comic{min-height:245px;border:2px solid var(--navy);border-radius:18px;position:relative;overflow:hidden;background:#eef3fb}.comic img{width:100%;height:100%;object-fit:cover}.comic .shade{position:absolute;inset:0;background:linear-gradient(180deg,transparent 38%,rgba(8,24,55,.82))}.comic .speech{position:absolute;top:12px;left:12px;right:12px;background:#fff;border:2px solid var(--navy);border-radius:16px;padding:10px;font-weight:900}.comic .caption{position:absolute;left:12px;right:12px;bottom:12px;color:#fff;font-weight:900}.video{background:#10234f;color:#fff;border-radius:22px;overflow:hidden}.slide{display:none;min-height:285px;padding:32px;align-items:center;justify-content:center;text-align:center}.slide.active{display:flex}.slide h3{font-size:42px;margin:0}.slide p{font-size:18px;line-height:1.5;color:#e9f0ff;max-width:760px}.video-controls{display:flex;gap:9px;align-items:center;padding:12px;background:#0b1c3e}.video-controls button{border:0;border-radius:12px;padding:9px 12px;background:white;color:#10234f;font-weight:1000}.vprog{height:8px;flex:1;background:rgba(255,255,255,.15);border-radius:999px;overflow:hidden}.vprog span{display:block;height:100%;width:0;background:#ff8a24}.stats{display:grid;grid-template-columns:repeat(5,1fr);gap:10px;margin-bottom:12px}.stat{padding:12px;border-radius:15px;background:#f7faff;border:1px solid var(--line)}.stat strong{display:block;font-size:24px;color:#1769d7}.stat span{font-size:12px;color:#65738d;font-weight:800}.progress{height:10px;background:#edf1f7;border-radius:999px;overflow:hidden;margin-bottom:14px}.progress span{display:block;height:100%;width:0;background:linear-gradient(90deg,#2f7cf4,#16a064)}.q{border:1px solid var(--line);border-radius:19px;padding:16px;margin:12px 0;background:#fbfdff}.qtitle{display:flex;justify-content:space-between;gap:10px;font-weight:1000;font-size:18px}.pts{padding:6px 9px;border-radius:999px;background:#fff6de;color:#a86800;font-size:12px;white-space:nowrap}.opts{display:grid;grid-template-columns:repeat(2,1fr);gap:8px;margin-top:11px}.opts button{border:1px solid #dbe3ee;background:#fff;padding:10px 12px;border-radius:12px;text-align:left;font-weight:800;color:#334764}.opts button.correct{background:#eaf9f1;border-color:#3bbb7a;color:#12794a}.opts button.wrong{background:#fff0f3;border-color:#ed8198;color:#b22e54}.textans{display:flex;gap:8px;flex-wrap:wrap;margin-top:11px}.textans input{flex:1;min-width:220px;border:1px solid #dbe3ee;border-radius:12px;padding:11px}.textans button{border:0;border-radius:12px;background:#1769d7;color:#fff;font-weight:1000;padding:11px 14px}.fb{display:none;margin-top:10px;padding:10px 12px;border-radius:12px;font-weight:800}.fb.show{display:block}.fb.ok{background:#eaf9f1;color:#12794a}.fb.ko{background:#fff0f3;color:#b22e54}.errcomic{display:none;margin-top:10px;padding:10px;border-radius:16px;background:#fff8fa;border:1px solid #efdae1}.errcomic.show{display:grid;grid-template-columns:110px 1fr;gap:10px;align-items:center}.errcomic img{width:110px;height:95px;object-fit:cover;border-radius:12px}.errcomic .bubble{background:#fff;border:2px solid #bd4165;border-radius:14px;padding:10px;color:#8f2f4d;font-weight:900}.decomp{display:grid;gap:8px;margin-top:12px;padding:14px;border-radius:16px;background:#fff;border:1px solid #efd9df}.decomp-row{display:grid;grid-template-columns:110px 1fr 1fr 1fr;gap:7px;align-items:center;font-family:Consolas,monospace}.decomp-row span:not(:first-child){padding:8px;border-radius:10px;background:#f7faff;text-align:right;font-weight:900}.decomp-row.result span:not(:first-child){background:#eaf9f1;color:#12794a}.final{display:none;padding:16px;border-radius:18px;background:#eaf9f1;color:#12794a;font-weight:900;margin-top:14px}.final.show{display:block}.treasure{display:none;margin-top:17px;padding:20px;border-radius:22px;background:linear-gradient(135deg,#fff8df,#fff0b9);border:2px solid #efd06a}.treasure.show{display:block}.chestrow{display:grid;grid-template-columns:150px 1fr;gap:16px;align-items:center}.chest{height:125px;border-radius:20px;background:linear-gradient(145deg,#925b24,#593009);border:5px solid #372008;position:relative}.chest:before{content:"";position:absolute;left:12px;right:12px;top:18px;height:29px;border-radius:10px;background:#a66a29;border:4px solid #372008}.chest:after{content:"";position:absolute;left:50%;top:55px;transform:translateX(-50%);width:32px;height:32px;border-radius:9px;background:#ffd45c;border:4px solid #9d6b00}.diploma{margin-top:13px;padding:16px;border-radius:17px;background:#fff;border:2px dashed #cfad55}.diploma h3{margin:0 0 6px;color:#8d6410}.diploma .name{font-size:22px;font-weight:1000;color:#10234f}.sideactions{display:grid;gap:9px}.sideactions button,.sideactions a{border:0;border-radius:14px;padding:12px 13px;text-align:left;font-weight:1000}.sideactions .pink{background:#fff0f4;color:#ca3e76}.sideactions .purple{background:#f0eaff;color:#6840bb}.sideactions .green{background:#e8f8ef;color:#14874f}.sideactions .orange{background:#fff1e6;color:#ce6815}.sideactions .blue{background:#eaf3ff;color:#1769d7}.memogrid{display:grid;grid-template-columns:repeat(2,1fr);gap:10px}.memo{padding:14px;border-radius:16px;border:1px solid var(--line);background:#fbfdff}.memo strong{display:block;margin-bottom:5px}.memo span{color:#60708b}@media(max-width:1100px){.grid{grid-template-columns:1fr}.side{position:static;grid-template-columns:repeat(2,1fr)}}@media(max-width:820px){.math-hero{grid-template-columns:1fr}.comics{grid-template-columns:1fr}.keygrid,.memogrid{grid-template-columns:1fr}.stats{grid-template-columns:repeat(2,1fr)}.opts{grid-template-columns:1fr}.login-callout{grid-template-columns:1fr}}@media(max-width:600px){.math-wrap{padding:14px 12px 50px}.math-hero{padding:20px}.side{grid-template-columns:1fr}.stats{grid-template-columns:1fr}.chestrow{grid-template-columns:1fr}.decomp-row{grid-template-columns:80px 1fr 1fr 1fr}}

.comic-panel{background:#f7fbff;border:1px solid var(--line);padding:12px;display:flex;flex-direction:column;min-height:unset}.comic-panel .comic-frame{position:relative;border:2px solid var(--navy);border-radius:18px;overflow:hidden;background:#eef3fb;aspect-ratio:4/3}.comic-panel img{width:100%;height:100%;object-fit:cover;display:block}.comic-panel .speech{position:absolute;top:10px;left:10px;right:10px;background:#fff;border:2px solid var(--navy);border-radius:16px;padding:10px;font-weight:900;color:#10234f}.comic-panel .captionbox{padding:10px 4px 2px}.comic-panel .captionbox strong{display:block;color:#1769d7;margin-bottom:4px}.comic-panel .captionbox span{display:block;color:#586985;line-height:1.45}.memo-image img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:14px;border:1px solid #d7e2f2;margin-bottom:10px;display:block}.memo-image{background:#f5fbff}.memogrid{align-items:start}.memogrid .memo{min-height:100%}@media(max-width:820px){.comic-panel .speech{font-size:14px;padding:8px}}

.comic-panel{background:#f7fbff;border:1px solid var(--line);padding:12px;display:flex;flex-direction:column;min-height:unset}.comic-panel .comic-frame{position:relative;border:2px solid var(--navy);border-radius:18px;overflow:hidden;background:#eef3fb;aspect-ratio:4/3}.comic-panel img{width:100%;height:100%;object-fit:cover;display:block}.comic-panel .speech{position:absolute;top:10px;left:10px;right:10px;background:#fff;border:2px solid var(--navy);border-radius:16px;padding:10px;font-weight:900;color:#10234f}.comic-panel .captionbox{padding:10px 4px 2px}.comic-panel .captionbox strong{display:block;color:#1769d7;margin-bottom:4px}.comic-panel .captionbox span{display:block;color:#586985;line-height:1.45}.comic-panel.no-image .comic-frame{background:radial-gradient(circle at 20% 20%,#ffffff 0,#f6f8ff 34%,#eaf1ff 35%,#eaf1ff 46%,#ffffff 47%,#ffffff 100%)}.comic-panel.no-image .manga-bg{position:absolute;inset:0;display:grid;place-items:end end;padding:12px}.comic-panel.no-image .manga-bg span{width:42px;height:42px;border-radius:14px;background:#1769d7;color:#fff;display:grid;place-items:center;font-weight:1000;box-shadow:0 8px 16px rgba(23,105,215,.25)}.memo-image img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:14px;border:1px solid #d7e2f2;margin-bottom:10px;display:block}.memo-image{background:#f5fbff}.memogrid{align-items:start}.memogrid .memo{min-height:100%}.rapbox{padding:18px;border-radius:22px;background:linear-gradient(135deg,#fff7ef,#fff);border:1px solid #ffd8b4}.rap-top{display:flex;justify-content:space-between;gap:12px;align-items:flex-start;margin-bottom:12px}.rap-top h3{margin:0;font-size:26px;color:#c95c00}.rap-top p{margin:6px 0 0;color:#6a7285}.rap-actions button{border:0;border-radius:12px;background:#10234f;color:#fff;padding:10px 12px;font-weight:1000}.rapbox audio{width:100%;margin:8px 0 10px}.rap-note{font-size:13px;color:#7b5f41;background:#fff3e6;border:1px solid #ffd8b4;border-radius:12px;padding:10px 12px;margin-bottom:12px}.rap-lyrics{display:grid;gap:8px}.rap-lyrics p{margin:0;padding:10px 12px;border-radius:14px;background:#fff;border:1px solid #f1e0d2;color:#46331d;font-weight:800}@media(max-width:820px){.comic-panel .speech{font-size:14px;padding:8px}.rap-top{flex-direction:column}}