@font-face{font-family:__Baloo_2_185f4e;font-style:normal;font-weight:500;font-display:swap;src:url(/_next/static/media/1d3bc6cf8ffd57a1-s.woff2) format("woff2");unicode-range:u+0900-097f,u+1cd0-1cf9,u+200c-200d,u+20a8,u+20b9,u+20f0,u+25cc,u+a830-a839,u+a8e0-a8ff,u+11b00-11b09}@font-face{font-family:__Baloo_2_185f4e;font-style:normal;font-weight:500;font-display:swap;src:url(/_next/static/media/86fbc9d8e118e1a5-s.woff2) format("woff2");unicode-range:u+0102-0103,u+0110-0111,u+0128-0129,u+0168-0169,u+01a0-01a1,u+01af-01b0,u+0300-0301,u+0303-0304,u+0308-0309,u+0323,u+0329,u+1ea0-1ef9,u+20ab}@font-face{font-family:__Baloo_2_185f4e;font-style:normal;font-weight:500;font-display:swap;src:url(/_next/static/media/643504413c165422-s.woff2) format("woff2");unicode-range:u+0100-02ba,u+02bd-02c5,u+02c7-02cc,u+02ce-02d7,u+02dd-02ff,u+0304,u+0308,u+0329,u+1d00-1dbf,u+1e00-1e9f,u+1ef2-1eff,u+2020,u+20a0-20ab,u+20ad-20c0,u+2113,u+2c60-2c7f,u+a720-a7ff}@font-face{font-family:__Baloo_2_185f4e;font-style:normal;font-weight:500;font-display:swap;src:url(/_next/static/media/a65324f02aa278dc-s.p.woff2) format("woff2");unicode-range:u+00??,u+0131,u+0152-0153,u+02bb-02bc,u+02c6,u+02da,u+02dc,u+0304,u+0308,u+0329,u+2000-206f,u+20ac,u+2122,u+2191,u+2193,u+2212,u+2215,u+feff,u+fffd}@font-face{font-family:__Baloo_2_185f4e;font-style:normal;font-weight:600;font-display:swap;src:url(/_next/static/media/1d3bc6cf8ffd57a1-s.woff2) format("woff2");unicode-range:u+0900-097f,u+1cd0-1cf9,u+200c-200d,u+20a8,u+20b9,u+20f0,u+25cc,u+a830-a839,u+a8e0-a8ff,u+11b00-11b09}@font-face{font-family:__Baloo_2_185f4e;font-style:normal;font-weight:600;font-display:swap;src:url(/_next/static/media/86fbc9d8e118e1a5-s.woff2) format("woff2");unicode-range:u+0102-0103,u+0110-0111,u+0128-0129,u+0168-0169,u+01a0-01a1,u+01af-01b0,u+0300-0301,u+0303-0304,u+0308-0309,u+0323,u+0329,u+1ea0-1ef9,u+20ab}@font-face{font-family:__Baloo_2_185f4e;font-style:normal;font-weight:600;font-display:swap;src:url(/_next/static/media/643504413c165422-s.woff2) format("woff2");unicode-range:u+0100-02ba,u+02bd-02c5,u+02c7-02cc,u+02ce-02d7,u+02dd-02ff,u+0304,u+0308,u+0329,u+1d00-1dbf,u+1e00-1e9f,u+1ef2-1eff,u+2020,u+20a0-20ab,u+20ad-20c0,u+2113,u+2c60-2c7f,u+a720-a7ff}@font-face{font-family:__Baloo_2_185f4e;font-style:normal;font-weight:600;font-display:swap;src:url(/_next/static/media/a65324f02aa278dc-s.p.woff2) format("woff2");unicode-range:u+00??,u+0131,u+0152-0153,u+02bb-02bc,u+02c6,u+02da,u+02dc,u+0304,u+0308,u+0329,u+2000-206f,u+20ac,u+2122,u+2191,u+2193,u+2212,u+2215,u+feff,u+fffd}@font-face{font-family:__Baloo_2_185f4e;font-style:normal;font-weight:700;font-display:swap;src:url(/_next/static/media/1d3bc6cf8ffd57a1-s.woff2) format("woff2");unicode-range:u+0900-097f,u+1cd0-1cf9,u+200c-200d,u+20a8,u+20b9,u+20f0,u+25cc,u+a830-a839,u+a8e0-a8ff,u+11b00-11b09}@font-face{font-family:__Baloo_2_185f4e;font-style:normal;font-weight:700;font-display:swap;src:url(/_next/static/media/86fbc9d8e118e1a5-s.woff2) format("woff2");unicode-range:u+0102-0103,u+0110-0111,u+0128-0129,u+0168-0169,u+01a0-01a1,u+01af-01b0,u+0300-0301,u+0303-0304,u+0308-0309,u+0323,u+0329,u+1ea0-1ef9,u+20ab}@font-face{font-family:__Baloo_2_185f4e;font-style:normal;font-weight:700;font-display:swap;src:url(/_next/static/media/643504413c165422-s.woff2) format("woff2");unicode-range:u+0100-02ba,u+02bd-02c5,u+02c7-02cc,u+02ce-02d7,u+02dd-02ff,u+0304,u+0308,u+0329,u+1d00-1dbf,u+1e00-1e9f,u+1ef2-1eff,u+2020,u+20a0-20ab,u+20ad-20c0,u+2113,u+2c60-2c7f,u+a720-a7ff}@font-face{font-family:__Baloo_2_185f4e;font-style:normal;font-weight:700;font-display:swap;src:url(/_next/static/media/a65324f02aa278dc-s.p.woff2) format("woff2");unicode-range:u+00??,u+0131,u+0152-0153,u+02bb-02bc,u+02c6,u+02da,u+02dc,u+0304,u+0308,u+0329,u+2000-206f,u+20ac,u+2122,u+2191,u+2193,u+2212,u+2215,u+feff,u+fffd}@font-face{font-family:__Baloo_2_185f4e;font-style:normal;font-weight:800;font-display:swap;src:url(/_next/static/media/1d3bc6cf8ffd57a1-s.woff2) format("woff2");unicode-range:u+0900-097f,u+1cd0-1cf9,u+200c-200d,u+20a8,u+20b9,u+20f0,u+25cc,u+a830-a839,u+a8e0-a8ff,u+11b00-11b09}@font-face{font-family:__Baloo_2_185f4e;font-style:normal;font-weight:800;font-display:swap;src:url(/_next/static/media/86fbc9d8e118e1a5-s.woff2) format("woff2");unicode-range:u+0102-0103,u+0110-0111,u+0128-0129,u+0168-0169,u+01a0-01a1,u+01af-01b0,u+0300-0301,u+0303-0304,u+0308-0309,u+0323,u+0329,u+1ea0-1ef9,u+20ab}@font-face{font-family:__Baloo_2_185f4e;font-style:normal;font-weight:800;font-display:swap;src:url(/_next/static/media/643504413c165422-s.woff2) format("woff2");unicode-range:u+0100-02ba,u+02bd-02c5,u+02c7-02cc,u+02ce-02d7,u+02dd-02ff,u+0304,u+0308,u+0329,u+1d00-1dbf,u+1e00-1e9f,u+1ef2-1eff,u+2020,u+20a0-20ab,u+20ad-20c0,u+2113,u+2c60-2c7f,u+a720-a7ff}@font-face{font-family:__Baloo_2_185f4e;font-style:normal;font-weight:800;font-display:swap;src:url(/_next/static/media/a65324f02aa278dc-s.p.woff2) format("woff2");unicode-range:u+00??,u+0131,u+0152-0153,u+02bb-02bc,u+02c6,u+02da,u+02dc,u+0304,u+0308,u+0329,u+2000-206f,u+20ac,u+2122,u+2191,u+2193,u+2212,u+2215,u+feff,u+fffd}@font-face{font-family:__Baloo_2_Fallback_185f4e;src:local("Arial");ascent-override:112.55%;descent-override:54.71%;line-gap-override:0.00%;size-adjust:95.78%}.__className_185f4e{font-family:__Baloo_2_185f4e,__Baloo_2_Fallback_185f4e;font-style:normal}.__variable_185f4e{--font-baloo:"__Baloo_2_185f4e","__Baloo_2_Fallback_185f4e"}@font-face{font-family:__Nunito_c046d1;font-style:normal;font-weight:400;font-display:swap;src:url(/_next/static/media/abfec168c8990f67-s.woff2) format("woff2");unicode-range:u+0460-052f,u+1c80-1c8a,u+20b4,u+2de0-2dff,u+a640-a69f,u+fe2e-fe2f}@font-face{font-family:__Nunito_c046d1;font-style:normal;font-weight:400;font-display:swap;src:url(/_next/static/media/3131c862d4942660-s.woff2) format("woff2");unicode-range:u+0301,u+0400-045f,u+0490-0491,u+04b0-04b1,u+2116}@font-face{font-family:__Nunito_c046d1;font-style:normal;font-weight:400;font-display:swap;src:url(/_next/static/media/6a9c36ea9dc9b36b-s.woff2) format("woff2");unicode-range:u+0102-0103,u+0110-0111,u+0128-0129,u+0168-0169,u+01a0-01a1,u+01af-01b0,u+0300-0301,u+0303-0304,u+0308-0309,u+0323,u+0329,u+1ea0-1ef9,u+20ab}@font-face{font-family:__Nunito_c046d1;font-style:normal;font-weight:400;font-display:swap;src:url(/_next/static/media/e1694c6cb47c173f-s.woff2) format("woff2");unicode-range:u+0100-02ba,u+02bd-02c5,u+02c7-02cc,u+02ce-02d7,u+02dd-02ff,u+0304,u+0308,u+0329,u+1d00-1dbf,u+1e00-1e9f,u+1ef2-1eff,u+2020,u+20a0-20ab,u+20ad-20c0,u+2113,u+2c60-2c7f,u+a720-a7ff}@font-face{font-family:__Nunito_c046d1;font-style:normal;font-weight:400;font-display:swap;src:url(/_next/static/media/ee40bb094c99a29a-s.p.woff2) format("woff2");unicode-range:u+00??,u+0131,u+0152-0153,u+02bb-02bc,u+02c6,u+02da,u+02dc,u+0304,u+0308,u+0329,u+2000-206f,u+20ac,u+2122,u+2191,u+2193,u+2212,u+2215,u+feff,u+fffd}@font-face{font-family:__Nunito_c046d1;font-style:normal;font-weight:600;font-display:swap;src:url(/_next/static/media/abfec168c8990f67-s.woff2) format("woff2");unicode-range:u+0460-052f,u+1c80-1c8a,u+20b4,u+2de0-2dff,u+a640-a69f,u+fe2e-fe2f}@font-face{font-family:__Nunito_c046d1;font-style:normal;font-weight:600;font-display:swap;src:url(/_next/static/media/3131c862d4942660-s.woff2) format("woff2");unicode-range:u+0301,u+0400-045f,u+0490-0491,u+04b0-04b1,u+2116}@font-face{font-family:__Nunito_c046d1;font-style:normal;font-weight:600;font-display:swap;src:url(/_next/static/media/6a9c36ea9dc9b36b-s.woff2) format("woff2");unicode-range:u+0102-0103,u+0110-0111,u+0128-0129,u+0168-0169,u+01a0-01a1,u+01af-01b0,u+0300-0301,u+0303-0304,u+0308-0309,u+0323,u+0329,u+1ea0-1ef9,u+20ab}@font-face{font-family:__Nunito_c046d1;font-style:normal;font-weight:600;font-display:swap;src:url(/_next/static/media/e1694c6cb47c173f-s.woff2) format("woff2");unicode-range:u+0100-02ba,u+02bd-02c5,u+02c7-02cc,u+02ce-02d7,u+02dd-02ff,u+0304,u+0308,u+0329,u+1d00-1dbf,u+1e00-1e9f,u+1ef2-1eff,u+2020,u+20a0-20ab,u+20ad-20c0,u+2113,u+2c60-2c7f,u+a720-a7ff}@font-face{font-family:__Nunito_c046d1;font-style:normal;font-weight:600;font-display:swap;src:url(/_next/static/media/ee40bb094c99a29a-s.p.woff2) format("woff2");unicode-range:u+00??,u+0131,u+0152-0153,u+02bb-02bc,u+02c6,u+02da,u+02dc,u+0304,u+0308,u+0329,u+2000-206f,u+20ac,u+2122,u+2191,u+2193,u+2212,u+2215,u+feff,u+fffd}@font-face{font-family:__Nunito_c046d1;font-style:normal;font-weight:700;font-display:swap;src:url(/_next/static/media/abfec168c8990f67-s.woff2) format("woff2");unicode-range:u+0460-052f,u+1c80-1c8a,u+20b4,u+2de0-2dff,u+a640-a69f,u+fe2e-fe2f}@font-face{font-family:__Nunito_c046d1;font-style:normal;font-weight:700;font-display:swap;src:url(/_next/static/media/3131c862d4942660-s.woff2) format("woff2");unicode-range:u+0301,u+0400-045f,u+0490-0491,u+04b0-04b1,u+2116}@font-face{font-family:__Nunito_c046d1;font-style:normal;font-weight:700;font-display:swap;src:url(/_next/static/media/6a9c36ea9dc9b36b-s.woff2) format("woff2");unicode-range:u+0102-0103,u+0110-0111,u+0128-0129,u+0168-0169,u+01a0-01a1,u+01af-01b0,u+0300-0301,u+0303-0304,u+0308-0309,u+0323,u+0329,u+1ea0-1ef9,u+20ab}@font-face{font-family:__Nunito_c046d1;font-style:normal;font-weight:700;font-display:swap;src:url(/_next/static/media/e1694c6cb47c173f-s.woff2) format("woff2");unicode-range:u+0100-02ba,u+02bd-02c5,u+02c7-02cc,u+02ce-02d7,u+02dd-02ff,u+0304,u+0308,u+0329,u+1d00-1dbf,u+1e00-1e9f,u+1ef2-1eff,u+2020,u+20a0-20ab,u+20ad-20c0,u+2113,u+2c60-2c7f,u+a720-a7ff}@font-face{font-family:__Nunito_c046d1;font-style:normal;font-weight:700;font-display:swap;src:url(/_next/static/media/ee40bb094c99a29a-s.p.woff2) format("woff2");unicode-range:u+00??,u+0131,u+0152-0153,u+02bb-02bc,u+02c6,u+02da,u+02dc,u+0304,u+0308,u+0329,u+2000-206f,u+20ac,u+2122,u+2191,u+2193,u+2212,u+2215,u+feff,u+fffd}@font-face{font-family:__Nunito_c046d1;font-style:normal;font-weight:800;font-display:swap;src:url(/_next/static/media/abfec168c8990f67-s.woff2) format("woff2");unicode-range:u+0460-052f,u+1c80-1c8a,u+20b4,u+2de0-2dff,u+a640-a69f,u+fe2e-fe2f}@font-face{font-family:__Nunito_c046d1;font-style:normal;font-weight:800;font-display:swap;src:url(/_next/static/media/3131c862d4942660-s.woff2) format("woff2");unicode-range:u+0301,u+0400-045f,u+0490-0491,u+04b0-04b1,u+2116}@font-face{font-family:__Nunito_c046d1;font-style:normal;font-weight:800;font-display:swap;src:url(/_next/static/media/6a9c36ea9dc9b36b-s.woff2) format("woff2");unicode-range:u+0102-0103,u+0110-0111,u+0128-0129,u+0168-0169,u+01a0-01a1,u+01af-01b0,u+0300-0301,u+0303-0304,u+0308-0309,u+0323,u+0329,u+1ea0-1ef9,u+20ab}@font-face{font-family:__Nunito_c046d1;font-style:normal;font-weight:800;font-display:swap;src:url(/_next/static/media/e1694c6cb47c173f-s.woff2) format("woff2");unicode-range:u+0100-02ba,u+02bd-02c5,u+02c7-02cc,u+02ce-02d7,u+02dd-02ff,u+0304,u+0308,u+0329,u+1d00-1dbf,u+1e00-1e9f,u+1ef2-1eff,u+2020,u+20a0-20ab,u+20ad-20c0,u+2113,u+2c60-2c7f,u+a720-a7ff}@font-face{font-family:__Nunito_c046d1;font-style:normal;font-weight:800;font-display:swap;src:url(/_next/static/media/ee40bb094c99a29a-s.p.woff2) format("woff2");unicode-range:u+00??,u+0131,u+0152-0153,u+02bb-02bc,u+02c6,u+02da,u+02dc,u+0304,u+0308,u+0329,u+2000-206f,u+20ac,u+2122,u+2191,u+2193,u+2212,u+2215,u+feff,u+fffd}@font-face{font-family:__Nunito_Fallback_c046d1;src:local("Arial");ascent-override:99.71%;descent-override:34.82%;line-gap-override:0.00%;size-adjust:101.39%}.__className_c046d1{font-family:__Nunito_c046d1,__Nunito_Fallback_c046d1;font-style:normal}.__variable_c046d1{--font-nunito:"__Nunito_c046d1","__Nunito_Fallback_c046d1"}:root{--orange:#ff8a3d;--orange-d:#e76f22;--ink:#233140;--ink-soft:#5a6b7b;--paper:#fff;--bg:#bfe3ff;--green:#39c26b;--shadow:0 12px 30px rgba(30,50,80,.18);--radius:22px}*{box-sizing:border-box}[hidden]{display:none!important}body,html{margin:0;height:100%;overflow:hidden}body{font-family:var(--font-nunito),"Nunito",system-ui,sans-serif;color:var(--ink);background:linear-gradient(#8ec9ff,#eaf7ff);-webkit-font-smoothing:antialiased}.age-pill,.btn-primary,.lesson-title,.subject-tab,h1,h2,h3{font-family:var(--font-baloo),"Baloo 2",system-ui,sans-serif}#scene{position:fixed;inset:0;width:100%;height:100%;display:block;touch-action:none}.grad{background:linear-gradient(90deg,var(--orange),#ffb84d);-webkit-background-clip:text;background-clip:text;color:transparent}.overlay{position:fixed;inset:0;z-index:20;pointer-events:none}.overlay>*{pointer-events:auto}.overlay.full{display:flex;align-items:center;justify-content:center;background:radial-gradient(circle at 50% 30%,hsla(0,0%,100%,.35),rgba(120,170,220,.55));-webkit-backdrop-filter:blur(3px);backdrop-filter:blur(3px)}.overlay.hud-mode{pointer-events:none}.overlay.hud-mode .hud-hint,.overlay.hud-mode .hud-top{pointer-events:auto}.btn-primary{border:none;cursor:pointer;background:linear-gradient(180deg,var(--orange),var(--orange-d));color:#fff;font-weight:800;font-size:1.05rem;padding:13px 22px;border-radius:16px;box-shadow:0 6px 0 #c95c18,var(--shadow);transition:transform .08s,box-shadow .08s;letter-spacing:.3px}.btn-primary:active{transform:translateY(4px);box-shadow:0 2px 0 #c95c18}.btn-primary:disabled{filter:grayscale(.6) opacity(.6);cursor:not-allowed;box-shadow:var(--shadow)}.btn-primary.big{font-size:1.2rem;padding:16px 30px;width:100%}.btn-ghost{border:2px solid #d7e2ee;background:#fff;color:var(--ink-soft);font-weight:700;padding:11px 16px;border-radius:14px;cursor:pointer}.btn-ghost:hover{border-color:var(--orange);color:var(--orange-d)}.icon-btn{border:none;background:#fff;width:44px;height:44px;border-radius:14px;font-size:1.2rem;cursor:pointer;box-shadow:var(--shadow)}.card{padding:30px;max-width:440px;width:92%;text-align:center;animation:pop .3s ease}@keyframes pop{0%{transform:scale(.9);opacity:0}}.welcome-bixy{width:110px;filter:drop-shadow(0 8px 12px rgba(231,111,34,.4));animation:bob 3s ease-in-out infinite}.welcome h1{font-size:2.1rem;margin:6px 0 2px}.lead{color:var(--ink-soft);margin:0 0 18px;font-weight:600}.field{display:block;text-align:left;margin:12px 0}.field>span{display:block;font-weight:700;margin-bottom:6px;color:var(--ink)}.field input,.field select{width:100%;padding:12px 14px;border-radius:12px;border:2px solid #dde6f0;font-size:1rem;font-family:inherit;background:#f8fbff}.field input:focus,.field select:focus{outline:none;border-color:var(--orange)}.age-grid{display:grid;grid-template-columns:repeat(5,1fr);grid-gap:8px;gap:8px;margin:8px 0 18px}.age-pill{border:2px solid #dde6f0;background:#f8fbff;border-radius:14px;padding:12px 0;font-size:1.2rem;font-weight:800;cursor:pointer;color:var(--ink)}.age-pill:hover{border-color:var(--orange)}.age-pill.sel{background:linear-gradient(180deg,var(--orange),var(--orange-d));color:#fff;border-color:transparent;transform:scale(1.06)}.stage-hint{min-height:22px;margin:14px 0 0;color:var(--ink-soft);font-weight:600}.hud-top{position:fixed;top:0;left:0;right:0;display:flex;justify-content:space-between;align-items:center;padding:14px 18px;gap:12px}.subject-tabs{display:flex;gap:8px;flex-wrap:wrap}.subject-tab{background:hsla(0,0%,100%,.85);-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);border-radius:16px;padding:9px 15px;cursor:pointer;font-weight:700;display:flex;align-items:center;gap:7px;box-shadow:var(--shadow);color:var(--ink);border:none;border-bottom:4px solid transparent;transition:transform .1s}.subject-tab .t-emoji{font-size:1.15rem}.subject-tab:hover{transform:translateY(-2px)}.subject-tab.active{border-bottom-color:var(--c);color:var(--c)}.hud-right{display:flex;gap:8px;align-items:center}.stat{background:hsla(0,0%,100%,.9);border-radius:14px;padding:9px 13px;font-weight:800;box-shadow:var(--shadow);font-size:1rem}.stat.streak{color:#ef6c1a}.stat.xp{color:#f4a400}.hud-hint{position:fixed;bottom:22px;left:50%;transform:translateX(-50%);background:rgba(35,49,64,.82);color:#fff;padding:10px 18px;border-radius:999px;font-weight:700;box-shadow:var(--shadow);max-width:90vw;text-align:center}.modal-scrim{position:fixed;inset:0;z-index:40;display:flex;align-items:center;justify-content:center;background:rgba(20,35,55,.45);-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);padding:16px;animation:fade .2s ease}@keyframes fade{0%{opacity:0}}.modal{background:var(--paper);border-radius:26px;width:100%;max-width:560px;max-height:92vh;overflow:hidden;display:flex;flex-direction:column;box-shadow:0 30px 60px rgba(20,35,55,.4);animation:pop .25s ease}.lesson-head{display:flex;align-items:center;justify-content:space-between;padding:16px 20px 10px;border-bottom:1px solid #eef2f7}.lesson-title{font-size:1.25rem;font-weight:800}.bixy-x{border:none;background:#f0f3f7;width:36px;height:36px;border-radius:50%;font-size:1.3rem;cursor:pointer;color:var(--ink-soft);line-height:1}.bixy-x:hover{background:#ffe2d2;color:var(--orange-d)}.progress-bar{height:10px;background:#eef2f7;border-radius:999px;margin:10px 20px 0;overflow:hidden}.progress-bar.small{margin:8px auto 0;max-width:240px}.progress-bar>span{display:block;height:100%;background:linear-gradient(90deg,var(--subject,var(--orange)),#ffce8a);border-radius:999px;transition:width .35s ease}.lesson-sub{padding:6px 20px 0;color:var(--ink-soft);font-weight:700;font-size:.9rem}.lesson-body{padding:14px 24px;overflow-y:auto}.lesson-body h2{font-size:1.5rem;margin:6px 0 10px}.lesson-text{font-size:1.08rem;line-height:1.6;color:#2d3e50}.visual{display:flex;justify-content:center;margin:6px 0 14px}.vis{max-width:100%;height:auto;max-height:180px}.vis-cap{font:700 16px Baloo\ 2,sans-serif;fill:#5a6b7b}.vis-row{display:flex;gap:18px;flex-wrap:wrap;justify-content:center}.lesson-foot{display:flex;justify-content:space-between;gap:10px;align-items:center;padding:14px 20px;border-top:1px solid #eef2f7}.q-text{font-size:1.3rem}.options{flex-direction:column;margin-top:6px}.option,.options{display:flex;gap:10px}.option{text-align:left;border:2px solid #e2e9f1;background:#f8fbff;border-radius:14px;padding:13px 15px;font-size:1.05rem;font-weight:600;cursor:pointer;color:var(--ink);align-items:center;transition:border-color .1s,transform .06s}.option:hover{border-color:var(--orange)}.opt-key{background:#e7eef6;color:var(--ink-soft);font-weight:800;border-radius:8px;width:28px;height:28px;display:inline-flex;align-items:center;justify-content:center;flex:none}.option.sel{border-color:var(--orange);background:#fff5ec}.option.locked{cursor:default}.option.correct{border-color:var(--green);background:#e8faef}.option.correct .opt-key{background:var(--green);color:#fff}.option.wrong{border-color:#e8556b;background:#fdecef}.option.wrong .opt-key{background:#e8556b;color:#fff}.feedback{margin-top:14px;padding:12px 14px;border-radius:14px;line-height:1.5;font-weight:600}.feedback.good{background:#e8faef;color:#1c7a42}.feedback.bad{background:#fdecef;color:#b4374b}.done-screen{padding:34px 28px;text-align:center}.done-burst{font-size:4rem;animation:bob 1.6s ease-in-out infinite}.done-screen h2{font-size:1.9rem;margin:6px 0}.score-line{font-size:1.2rem;color:var(--ink-soft)}.xp-toast{display:inline-block;background:linear-gradient(180deg,#ffd34d,#f4a400);color:#6b4a00;font-weight:800;padding:8px 18px;border-radius:999px;margin:8px 0 16px;font-size:1.1rem}.level-row{font-weight:800;color:var(--ink-soft);margin-bottom:20px}.done-screen.celebrate{animation:pop .3s ease;max-width:460px}.pop-burst{animation:burst-pop .6s cubic-bezier(.2,1.4,.4,1) both,bob 1.6s ease-in-out .6s infinite}@keyframes burst-pop{0%{transform:scale(0) rotate(-30deg);opacity:0}60%{transform:scale(1.3) rotate(8deg)}to{transform:scale(1) rotate(0);opacity:1}}.bounce-in{animation:bounce-in .5s cubic-bezier(.2,1.5,.4,1) both}@keyframes bounce-in{0%{transform:scale(0)}70%{transform:scale(1.15)}to{transform:scale(1)}}.xp-progress{margin:4px 0 20px;text-align:left}.xp-progress-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:6px}.xp-level-badge{background:linear-gradient(180deg,#2e9be6,#1d7fc4);color:#fff;font-weight:800;padding:3px 12px;border-radius:999px;font-size:.9rem}.xp-progress-num{font-weight:700;color:var(--ink-soft);font-size:.9rem}.xp-bar-track{height:16px;background:#e6edf4;border-radius:999px;overflow:hidden;box-shadow:inset 0 2px 4px rgba(0,0,0,.12)}.xp-bar-fill{height:100%;border-radius:999px;background:linear-gradient(90deg,#ffd34d,#f4a400);transition:width .12s linear;box-shadow:0 0 12px rgba(244,164,0,.6)}.level-up-flash{margin-top:12px;text-align:center;font-weight:800;color:#1d7fc4;font-size:1.05rem;animation:bounce-in .5s cubic-bezier(.2,1.5,.4,1) both}.celebrate-overlay,.celebrate-row{justify-content:center;align-items:center}.celebrate-row{display:flex;gap:18px;flex-wrap:wrap;max-height:94vh;width:100%}.celebrate-row .done-screen.celebrate{margin:0;align-self:center;width:auto;flex:1 1 380px;max-width:460px;min-width:0}.focus-summary-card{width:auto;flex:1 1 320px;max-width:380px;min-width:0;max-height:90vh;overflow-y:auto;padding:22px;text-align:left;animation:pop .3s ease .1s both}.focus-summary-head{display:flex;gap:12px;align-items:center;margin-bottom:12px}.focus-summary-emoji{font-size:2rem}.focus-summary-head h3{margin:0;font-size:1.25rem}.focus-summary-head .muted{margin:2px 0 0;font-size:.85rem}.focus-pie{display:flex;flex-direction:column;align-items:center;gap:14px}.focus-pie-legend{list-style:none;margin:0;padding:0;width:100%;display:grid;grid-template-columns:1fr 1fr;grid-gap:6px 14px;gap:6px 14px}.focus-pie-legend li{display:flex;align-items:center;gap:7px;font-size:.9rem}.focus-pie-dot{width:12px;height:12px;border-radius:4px;flex:none}.focus-pie-label{color:var(--ink-soft)}.focus-pie-val{margin-left:auto;font-weight:800;color:#2d3e50}.focus-summary-ai{margin-top:16px;background:#f4f8fc;border-radius:14px;padding:14px 16px}.focus-summary-ai-title{font-weight:800;color:#1d7fc4;font-size:.8rem;text-transform:uppercase;letter-spacing:.04em;margin-bottom:6px}.focus-summary-text{margin:0;line-height:1.5;color:var(--ink)}.focus-summary-weakness{margin:10px 0 0;font-size:.9rem;color:var(--ink-soft)}.focus-summary-skeleton{color:var(--ink-soft);font-style:italic}.focus-summary-close{margin-top:16px;width:100%}@media (max-width:900px){.celebrate-overlay.subtopic-overlay{padding:10px}}@media (max-width:760px){.celebrate-row{flex-direction:column;flex-wrap:nowrap;overflow-y:auto}.celebrate-row .done-screen.celebrate,.focus-summary-card{flex:0 0 auto;width:min(460px,92vw);max-width:92vw}}.settings-body{padding:18px 24px;overflow-y:auto}.settings-body h3{margin:16px 0 4px}.profile-modal{max-width:600px}.profile-modal .profile-hero{display:flex;gap:18px;align-items:center;padding:4px 0 18px;border-bottom:1px solid #eef2f7}@media (max-width:480px){.profile-modal .profile-hero{flex-direction:column;text-align:center}}.profile-modal .profile-stats{display:grid;grid-template-columns:repeat(4,1fr);grid-gap:10px;gap:10px;padding:18px 0;border-bottom:1px solid #eef2f7}@media (max-width:480px){.profile-modal .profile-stats{grid-template-columns:repeat(2,1fr)}}.profile-modal .stat-card{background:#f4f8fc;border-radius:14px;box-shadow:none}.profile-modal .profile-section{padding:18px 0 0}.profile-modal .profile-section+.profile-section{border-top:1px solid #eef2f7;margin-top:4px}.profile-modal .profile-empty,.profile-modal .profile-loading{padding:40px 0}.muted{color:var(--ink-soft);font-size:.92rem;line-height:1.5}.muted code{background:#eef2f7;padding:1px 6px;border-radius:6px;font-size:.85em}.settings-body .btn-ghost{margin-top:6px}.toggle{display:flex;align-items:center;gap:10px;font-weight:700;margin-top:16px;cursor:pointer}.toggle input{width:20px;height:20px}.bixy-wrap{position:fixed;right:22px;bottom:22px;z-index:60;display:flex;flex-direction:column;align-items:flex-end;gap:10px;--bixy-size:120px}.bixy-avatar{position:relative;border:none;background:none;cursor:-webkit-grab;cursor:grab;padding:0;width:var(--bixy-size);height:var(--bixy-size);touch-action:none}.bixy-avatar:active{cursor:-webkit-grabbing;cursor:grabbing}.bixy-avatar img{width:100%;height:100%;object-fit:contain;filter:drop-shadow(0 10px 14px rgba(231,111,34,.45));animation:bob 3.2s ease-in-out infinite;-webkit-user-select:none;-moz-user-select:none;user-select:none}@keyframes bob{0%,to{transform:translateY(0) rotate(-2deg)}50%{transform:translateY(-12px) rotate(2deg)}}.bixy-ring{position:absolute;inset:-6px;border-radius:50%;pointer-events:none;box-shadow:0 0 0 0 rgba(255,138,61,.5);opacity:0}.bixy-wrap.speaking .bixy-ring{animation:pulse 1s ease-out infinite;opacity:1}.bixy-wrap.speaking .bixy-avatar img{animation:bob .6s ease-in-out infinite}@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(255,138,61,.5)}to{box-shadow:0 0 0 26px rgba(255,138,61,0)}}.bixy-bubble{background:#fff;border-radius:18px;padding:12px 16px;max-width:280px;box-shadow:var(--shadow);position:relative;font-weight:600;line-height:1.45;animation:pop .2s ease}.bixy-bubble:after{content:"";position:absolute;right:34px;bottom:-9px;width:18px;height:18px;background:#fff;transform:rotate(45deg);border-radius:3px}.bixy-bubble p{margin:0}.bixy-panel{width:320px;max-width:86vw;background:#fff;border-radius:20px;box-shadow:var(--shadow);overflow:hidden;display:flex;flex-direction:column;animation:pop .2s ease;resize:both;min-width:260px;min-height:280px;max-height:80vh}.bixy-log{padding:12px;flex:1 1;min-height:120px;overflow-y:auto;display:flex;flex-direction:column;gap:8px;background:#f7fafd}.bixy-panel-head{background:linear-gradient(90deg,var(--orange),#ffb152);color:#fff;font-weight:800;padding:12px 16px;display:flex;justify-content:space-between;align-items:center;font-family:Baloo\ 2,sans-serif}.bixy-panel-head .bixy-x{background:hsla(0,0%,100%,.25);color:#fff}.bixy-head-btns{display:flex;gap:6px}.bixy-float-body{display:flex;flex-direction:column;height:min(58vh,440px);margin:-12px}.bixy-float-body .bixy-log{background:#f7fafd}.bixy-msg{padding:9px 13px;border-radius:14px;max-width:85%;line-height:1.4;font-weight:600;font-size:.95rem}.bixy-msg.you{align-self:flex-end;background:var(--orange);color:#fff;border-bottom-right-radius:4px}.bixy-msg.bixy{align-self:flex-start;background:#e9eef4;color:var(--ink);border-bottom-left-radius:4px}.bixy-msg.thinking{opacity:.65;font-style:italic}.bixy-input-row{display:flex;gap:8px;padding:10px;border-top:1px solid #eef2f7;align-items:center}.bixy-input-row input{flex:1 1;border:2px solid #e2e9f1;border-radius:12px;padding:10px 12px;font-size:.95rem;font-family:inherit}.bixy-input-row input:focus{outline:none;border-color:var(--orange)}.bixy-mic,.bixy-send{border:none;cursor:pointer;width:42px;height:42px;border-radius:12px;font-size:1.1rem;flex:none}.bixy-mic{background:#eef2f7}.bixy-mic.active{background:#e8556b;color:#fff;animation:pulse 1s infinite}.bixy-mic.disabled{opacity:.4}.bixy-send{background:var(--orange);color:#fff;font-weight:800}@media (max-width:540px){.subject-tab span:not(.t-emoji){display:none}.bixy-avatar{width:min(var(--bixy-size),96px);height:min(var(--bixy-size),96px)}.welcome h1{font-size:1.7rem}}.overlay.full{overflow-y:auto}.auth-card{max-width:400px}.auth-card form{margin-top:4px}.auth-card .btn-primary.big{margin-top:14px}.auth-error{background:#fdecef;color:#b4374b;font-weight:700;padding:9px 12px;border-radius:12px;margin:12px 0 0;font-size:.92rem}.auth-switch{margin:16px 0 0;color:var(--ink-soft);font-weight:600}.auth-switch a{color:var(--orange-d);font-weight:800;text-decoration:none}.auth-switch a:hover{text-decoration:underline}.node-label{background:rgba(30,40,60,.82);color:#fff;font-weight:700;font-family:var(--font-baloo),"Baloo 2",sans-serif;padding:.4em .8em;border-radius:14px;white-space:nowrap;font-size:clamp(14px,1.15vw,26px);box-shadow:0 4px 12px rgba(0,0,0,.25);-webkit-user-select:none;-moz-user-select:none;user-select:none}.node-label.locked{background:rgba(70,80,90,.78)}.world-loading{position:fixed;inset:0;display:flex;flex-direction:column;gap:14px;align-items:center;justify-content:center;color:#2d3e50;font-weight:700}.world-loading img{width:96px;animation:bob 2.4s ease-in-out infinite}.vis-caption{text-align:center;color:var(--ink-soft);font-weight:600;font-size:.92rem;margin:4px 0 0}.badge-toast{display:inline-block;background:linear-gradient(180deg,#ffe08a,#f4a400);color:#6b4a00;font-weight:800;padding:8px 16px;border-radius:999px;margin:0 0 16px;font-size:1rem}.stream-grid{display:grid;grid-template-columns:1fr 1fr;grid-gap:10px;gap:10px;margin:8px 0 18px}.stream-card{text-align:left;border:2px solid #dde6f0;background:#f8fbff;border-radius:16px;padding:14px;cursor:pointer;display:flex;flex-direction:column;gap:4px;color:var(--ink)}.stream-card b{font-size:1.05rem}.stream-card span{font-size:.82rem;color:var(--ink-soft);font-weight:600;line-height:1.35}.stream-card.sel,.stream-card:hover{border-color:var(--orange)}.stream-card.sel{background:#fff5ec;box-shadow:0 4px 0 #ffd9bf}.visual svg.vis{width:260px;max-width:100%;height:auto}.visual .vis-row{display:flex;gap:16px;flex-wrap:wrap;justify-content:center}.visual .vis-row svg.vis{width:200px}.planet-label{background:rgba(30,40,60,.82);color:#fff;font-weight:800;font-family:var(--font-baloo),"Baloo 2",sans-serif;padding:.4em .95em;border-radius:16px;white-space:nowrap;font-size:clamp(15px,1.3vw,30px);box-shadow:0 4px 12px rgba(0,0,0,.25);-webkit-user-select:none;-moz-user-select:none;user-select:none;text-align:center;display:flex;flex-direction:column;line-height:1.15}.planet-label.locked{background:rgba(70,80,90,.78)}.planet-label.conquered{box-shadow:0 0 0 2px #ffc83d,0 4px 12px rgba(0,0,0,.25)}.planet-sub{font-size:.72em;font-weight:700;opacity:.8}.hud-left{display:flex;align-items:center;gap:10px}.hud-title{background:hsla(0,0%,100%,.9);border-radius:14px;padding:8px 16px;font-family:var(--font-baloo),"Baloo 2",sans-serif;font-weight:800;color:var(--ink);box-shadow:var(--shadow);font-size:1.05rem}.lesson-modal.wide{max-width:880px}.interactive-canvas{margin:6px 0 4px}.interactive-instructions{font-weight:700;color:var(--ink);margin:0 0 10px;line-height:1.4}.overlay.hud-mode .carousel-arrow{pointer-events:auto}.carousel-arrow{position:fixed;top:50%;transform:translateY(-50%);width:60px;height:60px;border-radius:50%;border:none;cursor:pointer;background:hsla(0,0%,100%,.92);color:var(--ink);box-shadow:var(--shadow);font-size:2.2rem;font-weight:800;line-height:1;display:flex;align-items:center;justify-content:center;font-family:var(--font-baloo),sans-serif;transition:transform .1s,background .1s}.carousel-arrow:hover:not(:disabled){transform:translateY(-50%) scale(1.1);background:#fff;color:var(--orange-d)}.carousel-arrow:disabled{opacity:.3;cursor:default}.carousel-arrow.left{left:20px}.carousel-arrow.right{right:20px}@media (max-width:540px){.carousel-arrow{width:48px;height:48px;font-size:1.8rem}.carousel-arrow.left{left:8px}.carousel-arrow.right{right:8px}}.modal-scrim.learning{justify-content:flex-start;align-items:center;padding:3vh 3vw}.modal-scrim.learning .lesson-modal{width:min(62vw,1040px);max-width:none;height:92vh;max-height:92vh}.modal-scrim.learning .lesson-body{flex:1 1}@media (max-width:900px){.modal-scrim.learning{justify-content:flex-start;padding:10px 92px 10px 10px}.modal-scrim.learning .lesson-modal{width:100%;height:94vh}.tool-dock{top:auto;bottom:14px}}.floating-tool{position:fixed;z-index:55;background:var(--paper);border-radius:16px;box-shadow:0 18px 40px rgba(20,35,55,.35);overflow:hidden;-webkit-user-select:none;-moz-user-select:none;user-select:none;animation:pop .18s ease}.ft-head{display:flex;align-items:center;justify-content:space-between;cursor:-webkit-grab;cursor:grab;background:linear-gradient(90deg,var(--orange),#ffb152);color:#fff;padding:8px 12px;font-family:var(--font-baloo),sans-serif;font-weight:800;touch-action:none}.ft-head:active{cursor:-webkit-grabbing;cursor:grabbing}.ft-min{border:none;background:hsla(0,0%,100%,.28);color:#fff;width:26px;height:26px;border-radius:8px;font-weight:800;cursor:pointer;line-height:1}.ft-body{padding:12px}.tool-dock{position:fixed;right:14px;top:86px;z-index:55;display:flex;flex-direction:column;gap:10px;padding:8px;border-radius:20px;background:hsla(0,0%,100%,.55);-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px)}.tool-dock:empty{display:none}.tool-dock-btn{display:flex;flex-direction:column;align-items:center;gap:2px;cursor:pointer;border:none;background:hsla(0,0%,100%,.95);border-radius:14px;padding:8px 6px;width:64px;box-shadow:var(--shadow);color:var(--ink-soft);font-weight:700;font-size:.68rem}.tool-dock-btn:hover{transform:translateY(-2px)}.tool-dock-btn.active{color:var(--orange-d);box-shadow:0 0 0 2px var(--orange),var(--shadow)}.tool-dock-btn.live{position:relative}.tool-dock-btn.live:after{content:"";position:absolute;top:5px;right:5px;width:9px;height:9px;border-radius:50%;background:#39c26b;box-shadow:0 0 0 2px #fff}.tool-dock-icon{font-size:1.5rem}.focus-img{width:30px;height:30px;object-fit:contain;display:block}.focus-emoji{font-size:1.5rem;line-height:1}.tool-dock-icon .focus-img{width:30px;height:30px}.focus-panel{display:flex;flex-direction:column;gap:10px}.focus-cam{position:relative;width:100%;aspect-ratio:4/3;background:#0d1620;border-radius:12px;overflow:hidden}.focus-cam video{width:100%;height:100%;object-fit:cover;transform:scaleX(-1);display:block}.focus-cam-off{inset:0;justify-content:center;color:#8aa0b8;font-weight:700}.focus-cam-badge,.focus-cam-off{position:absolute;display:flex;align-items:center}.focus-cam-badge{left:8px;bottom:8px;gap:6px;color:#fff;font-weight:800;font-size:.82rem;padding:4px 10px 4px 6px;border-radius:999px;box-shadow:0 2px 8px rgba(0,0,0,.25)}.focus-cam-badge .focus-img{width:20px;height:20px}.focus-cam-badge .focus-emoji{font-size:1.05rem}.focus-readout{justify-content:space-between}.focus-now,.focus-readout{display:flex;align-items:center;gap:10px}.focus-now{min-width:0}.focus-now .focus-img{width:38px;height:38px}.focus-now .focus-emoji{font-size:2rem}.focus-now-label{font-family:var(--font-baloo),sans-serif;font-weight:800;color:var(--ink)}.focus-now-sub{font-size:.76rem;color:#7a8a99}.focus-btn{border:none;border-radius:12px;padding:10px 16px;font-weight:800;color:#fff;cursor:pointer;font-family:var(--font-baloo),sans-serif;white-space:nowrap}.focus-btn.start{background:var(--orange)}.focus-btn.stop{background:#ef5d6b}.focus-btn:disabled{opacity:.6;cursor:default}.focus-status{font-size:.78rem;color:#7a8a99;margin:0}.focus-error{font-size:.78rem;color:#c0392b;font-weight:600;margin:0}.focus-graph svg{width:100%;height:120px;display:block;background:#fbfdff;border:1px solid #eef2f7;border-radius:10px}.focus-graph-axis{display:flex;justify-content:space-between;font-size:.64rem;color:#9aa8b6;margin-top:2px}.focus-legend{display:flex;flex-wrap:wrap;gap:6px 12px;font-size:.72rem;color:#5a6b7b}.focus-legend-item{display:flex;align-items:center;gap:4px}.focus-legend-item i{width:10px;height:10px;border-radius:3px;display:inline-block}.focus-note{font-size:.68rem;color:#9aa8b6;margin:2px 0 0}.calc{width:216px}.calc-display{background:#233140;color:#fff;border-radius:10px;padding:12px 14px;text-align:right;font:800 1.5rem var(--font-baloo),sans-serif;margin-bottom:8px;overflow:hidden}.calc-row{display:flex;gap:6px;margin-bottom:6px}.calc-key{flex:1 1;border:none;background:#eef2f7;border-radius:10px;padding:12px 0;font-weight:800;font-size:1.05rem;cursor:pointer;color:var(--ink)}.calc-key:hover{background:#e2e9f1}.calc-key.op{background:#ffe9d6;color:var(--orange-d)}.calc-key.op.active{background:var(--orange);color:#fff}.calc-key.eq{background:var(--green);color:#fff}.calc-key.wide{flex:1 1}.calc-key.clear{background:#fdecef;color:#b4374b}.dict{width:100%}.dict-search{display:flex;gap:6px;margin-bottom:8px}.dict-search input{flex:1 1;border:2px solid #e2e9f1;border-radius:10px;padding:8px 10px;font-size:.95rem}.dict-search input:focus{outline:none;border-color:var(--orange)}.dict-search button{border:none;background:var(--orange);color:#fff;border-radius:10px;width:40px;cursor:pointer;font-size:1rem}.dict-results{max-height:320px;overflow-y:auto}.dict-note{color:var(--ink-soft);font-weight:600}.dict-phon{color:var(--ink-soft);font-style:italic;margin:0 0 6px}.dict-meaning{margin-bottom:10px}.dict-pos{display:inline-block;background:#eef2f7;color:var(--ink-soft);border-radius:6px;padding:1px 8px;font-weight:700;font-size:.8rem}.dict-meaning ol{margin:6px 0;padding-left:20px;font-size:.92rem;line-height:1.4}.dict-syn{font-size:.85rem;color:#2d3e50;margin:4px 0 0}.topic2d{position:fixed;inset:0;z-index:30;display:flex;flex-direction:column;background:linear-gradient(#bfe3ff,#eaf7ff)}.topic2d-head{display:flex;align-items:center;gap:12px;padding:14px 18px}.topic2d-progress{margin-left:auto;background:hsla(0,0%,100%,.9);border-radius:14px;padding:9px 14px;font-weight:800;box-shadow:var(--shadow);color:var(--ink);font-size:.95rem}.topic2d-map{flex:1 1;overflow:auto;padding:0 12px 24px}.topic2d-svg{width:100%;height:100%;min-height:360px;display:block;font-family:var(--font-baloo),sans-serif}.t2d-node.available circle:nth-of-type(2){animation:t2dpulse 1.6s ease-in-out infinite}@keyframes t2dpulse{0%,to{opacity:1}50%{opacity:.65}}.t2d-node.available text{animation:none}.subtopic-overlay{position:fixed;inset:0;z-index:45;display:flex;align-items:center;justify-content:flex-start;background:rgba(20,35,55,.4);-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);padding:3vh 3vw}.subtopic-panel{background:var(--paper);border-radius:24px;width:min(62vw,1000px);max-height:90vh;display:flex;flex-direction:column;overflow:hidden;box-shadow:0 30px 60px rgba(20,35,55,.4);animation:pop .22s ease}.subtopic-panel.resizable{resize:both;overflow:auto;min-width:320px;min-height:260px;max-width:96vw;max-height:94vh}.subtopic-head.drag-handle{cursor:-webkit-grab;cursor:grab;touch-action:none;-webkit-user-select:none;-moz-user-select:none;user-select:none}.subtopic-head.drag-handle:active{cursor:-webkit-grabbing;cursor:grabbing}.subtopic-head{display:flex;align-items:center;justify-content:space-between;padding:14px 20px;border-bottom:1px solid #eef2f7}.subtopic-step{font-family:var(--font-baloo),sans-serif;font-weight:800;color:var(--ink-soft)}.subtopic-panel-body{padding:16px 24px;overflow-y:auto;flex:1 1}.subtopic-panel-body h2{font-size:1.5rem;margin:4px 0 12px}.subtopic-foot{padding:14px 20px;border-top:1px solid #eef2f7;display:flex;justify-content:flex-end}@media (max-width:900px){.subtopic-overlay{justify-content:center;padding:10px 92px 10px 10px}.subtopic-panel{width:100%;max-height:94vh}}.reveal-wrap{position:relative;width:100%;height:460px;margin:4px 0 14px;border-radius:16px;overflow:hidden;box-shadow:inset 0 0 0 1px #eef2f7;background:#fff}.reveal-wrap .reveal{font-family:var(--font-nunito),sans-serif}.reveal-wrap .reveal h1,.reveal-wrap .reveal h2,.reveal-wrap .reveal h3{font-family:var(--font-baloo),sans-serif;color:var(--ink);text-transform:none;letter-spacing:0}.reveal-wrap .reveal .slides{text-align:left}.reveal-wrap .reveal li,.reveal-wrap .reveal p{color:#2d3e50}.reveal-wrap .reveal .controls{color:var(--orange)}.reveal-wrap .reveal .progress{color:var(--orange);height:5px}.reveal-wrap .reveal b,.reveal-wrap .reveal strong{color:var(--orange-d)}.reveal-wrap .reveal .bx-card{background:#f8fbff;border:2px solid #e2e9f1;border-radius:14px;padding:14px 18px}.reveal-wrap .reveal .bx-grid{display:flex;gap:10px;flex-wrap:wrap}@media (max-width:1024px){.reveal-wrap{height:420px}.reveal-wrap .reveal{--r-main-font-size:30px;font-size:30px}}@media (max-width:768px){.reveal-wrap{height:360px}.reveal-wrap .reveal{--r-main-font-size:26px;font-size:26px}.subtopic-panel-body{padding:14px 18px}.subtopic-panel-body h2{font-size:1.3rem}}@media (max-width:480px){.reveal-wrap{height:320px}.reveal-wrap .reveal{--r-main-font-size:22px;font-size:22px}}.reveal-loading{position:absolute;inset:0;z-index:20;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:16px;background:linear-gradient(180deg,#fff,#f6faff);color:var(--ink);font-family:var(--font-baloo),sans-serif;font-weight:700}.reveal-loading p{margin:0;color:#5a6b7b}.reveal-loading-spinner{width:46px;height:46px;border-radius:50%;border:5px solid #ffe3cb;border-top:5px solid var(--orange);animation:reveal-spin .8s linear infinite}@keyframes reveal-spin{to{transform:rotate(1turn)}}@media (prefers-reduced-motion:reduce){.reveal-loading-spinner{animation-duration:2s}}.q-input-row{display:flex;align-items:center;gap:12px;margin-top:4px;flex-wrap:wrap}.q-input-row input{flex:1 1;min-width:160px;border:2px solid #e2e9f1;border-radius:12px;padding:12px 14px;font-size:1.1rem;font-weight:700}.q-input-row input:focus{outline:none;border-color:var(--orange)}.q-mark{font-weight:800;padding:6px 12px;border-radius:10px}.q-mark.good{background:#e8faef;color:#1c7a42}.q-mark.bad{background:#fdecef;color:#b4374b}.options.tf{flex-direction:row}.options.tf .option{justify-content:center}.subtopic-panel-body.gate{display:flex;flex-direction:column}.gate-prompt{display:flex;gap:12px;align-items:flex-start;background:#f8fbff;border:2px solid #e2e9f1;border-radius:16px;padding:14px 16px}.gate-prompt .gate-bixy{font-size:1.6rem}.gate-prompt p{margin:0;font-weight:700;color:var(--ink);line-height:1.45}.gate-input{margin-top:12px;width:100%;border:2px solid #e2e9f1;border-radius:14px;padding:12px 14px;font-size:1rem;font-family:inherit;resize:vertical}.gate-input:focus{outline:none;border-color:var(--orange)}.gate-foot{display:flex;align-items:center;gap:10px;justify-content:flex-end}.gate-foot .bixy-mic{width:46px;height:46px;border-radius:12px;border:none;background:#eef2f7;font-size:1.2rem;cursor:pointer}.gate-foot .bixy-mic.active{background:#e8556b;color:#fff;animation:pulse 1s infinite}.gate-foot .bixy-mic.disabled{opacity:.4}.avatar{display:inline-flex;align-items:center;justify-content:center;border-radius:50%;overflow:hidden;background:linear-gradient(180deg,#2e9be6,#1d7fc4);color:#fff;font-weight:800;font-family:var(--font-baloo),sans-serif;flex:none;line-height:1;-webkit-user-select:none;-moz-user-select:none;user-select:none}.avatar img{width:100%;height:100%;object-fit:cover;display:block}.avatar-initial{transform:translateY(1px)}.avatar-btn{border:none;background:transparent;padding:0;cursor:pointer;border-radius:50%;box-shadow:0 0 0 3px hsla(0,0%,100%,.85);transition:transform .12s,box-shadow .12s}.avatar-btn:hover{transform:scale(1.06);box-shadow:0 0 0 3px #ffd34d}.profile-page{min-height:100dvh;background:var(--bg);padding:18px 16px 60px;font-family:var(--font-nunito),sans-serif;color:var(--ink);max-width:760px;margin:0 auto}.profile-empty,.profile-loading{text-align:center;padding:60px 20px;font-weight:700;color:var(--ink-soft)}.profile-empty{flex-direction:column;gap:14px}.profile-empty,.profile-topbar{display:flex;align-items:center}.profile-topbar{justify-content:space-between;margin-bottom:16px}.profile-topbar h1{font-family:var(--font-baloo),sans-serif;font-size:1.6rem;margin:0}.profile-topbar span{width:44px}.card{background:var(--paper);border-radius:var(--radius);box-shadow:var(--shadow)}.profile-hero{display:flex;gap:20px;padding:22px;align-items:center;margin-bottom:16px}@media (max-width:520px){.profile-hero{flex-direction:column;text-align:center}}.avatar-picker{display:flex;flex-direction:column;align-items:center;gap:10px}.avatar-picker-ring{padding:5px;border-radius:50%;background:linear-gradient(135deg,#ffd34d,#2e9be6)}.avatar-picker-ring.busy{animation:spin 1s linear infinite}@keyframes spin{to{transform:rotate(1turn)}}.avatar-picker-actions{display:flex;gap:8px}.avatar-picker-actions .btn-ghost{padding:7px 12px;font-size:.9rem}.avatar-error{color:#b4374b;font-size:.85rem;font-weight:700;max-width:200px;text-align:center}.profile-identity{flex:1 1;min-width:0}.name-edit{display:flex;align-items:center;gap:10px}.name-input{font-family:var(--font-baloo),sans-serif;font-size:1.5rem;font-weight:800;color:var(--ink);border:2px solid transparent;border-radius:10px;padding:4px 8px;width:100%;background:#f4f8fc}.name-input:focus{outline:none;border-color:var(--orange);background:#fff}.profile-email{color:var(--ink-soft);margin:4px 0 8px;font-size:.95rem}.profile-tags{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:14px}.tag{background:#eef2f7;color:var(--ink-soft);font-weight:700;padding:4px 12px;border-radius:999px;font-size:.85rem}.profile-level-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:6px}.profile-stats{display:grid;grid-template-columns:repeat(4,1fr);grid-gap:12px;gap:12px;margin-bottom:16px}@media (max-width:520px){.profile-stats{grid-template-columns:repeat(2,1fr)}}.stat-card{padding:16px 12px;text-align:center}.stat-num{font-family:var(--font-baloo),sans-serif;font-size:1.5rem;font-weight:800}.stat-label{color:var(--ink-soft);font-size:.82rem;font-weight:700;margin-top:2px}.profile-section{padding:20px 22px;margin-bottom:16px}.profile-section h2{font-family:var(--font-baloo),sans-serif;font-size:1.25rem;margin:0 0 14px}.badge-grid{display:flex;flex-wrap:wrap;gap:10px}.badge-chip{display:flex;align-items:center;gap:8px;background:#fff8e6;border:2px solid #ffe3a3;border-radius:14px;padding:8px 14px}.badge-icon{font-size:1.4rem}.badge-label{font-weight:800;color:#8a6a16;font-size:.9rem}.subject-progress{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:10px}.subject-progress li{gap:12px}.sp-emoji,.subject-progress li{display:flex;align-items:center}.sp-emoji{width:38px;height:38px;border-radius:12px;justify-content:center;font-size:1.2rem;flex:none}.sp-name{font-weight:800;flex:1 1}.sp-count{color:var(--ink-soft);font-weight:700;font-size:.9rem}