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10.272);--color-teal-950: oklch(27.1% .105 12.094);--color-accent: oklch(58.6% .253 17.585);--color-accent-2: oklch(65.6% .241 354.308)}:root[data-skin=halloween][data-theme=dark]{--d-surface: #2a1f45;--d-surface-inset: #33275a;--d-surface-inset-2: #3d3068;--d-surface-inset-3: #4a3b80;--d-line-soft: #3a2e5f;--d-line: #4b3d78;--d-line-strong: #62509a}:root[data-skin=halloween][data-theme=dark] [data-app-root]{background-image:radial-gradient(ellipse at 18% 0%,#4a2f7a,#1d1438 42%,#0d0919)}:root[data-skin=halloween]:not([data-theme=dark]) [data-app-root]{background-image:linear-gradient(135deg,#fff7ed,#faf5ff 55%,#fef3c7)}:root[data-skin=halloween]{--skin-frame-corner: "🎃"}:root[data-skin=halloween]{--color-teal-50: oklch(98% .016 73.684);--color-teal-100: oklch(95.4% .038 75.164);--color-teal-200: oklch(90.1% .076 70.697);--color-teal-300: oklch(83.7% .128 66.29);--color-teal-400: oklch(75% .183 55.934);--color-teal-500: oklch(70.5% .213 47.604);--color-teal-600: oklch(64.6% .222 41.116);--color-teal-700: oklch(55.3% .195 38.402);--color-teal-800: oklch(47% .157 37.304);--color-teal-900: oklch(40.8% .123 38.172);--color-teal-950: oklch(26.6% .079 36.259);--color-accent: oklch(64.6% .222 41.116);--color-accent-2: oklch(62.7% .265 303.9)}:root[data-skin=noel][data-theme=dark]{--d-surface: #15302a;--d-surface-inset: #1c3d35;--d-surface-inset-2: #244a40;--d-surface-inset-3: #2e5a4d;--d-line-soft: #25483e;--d-line: #305b4e;--d-line-strong: #40735f}:root[data-skin=noel][data-theme=dark] [data-app-root]{background-image:radial-gradient(1.5px 1.5px at 12% 18%,rgba(255,255,255,.85),transparent),radial-gradient(1px 1px at 33% 62%,rgba(255,255,255,.65),transparent),radial-gradient(1.5px 1.5px at 58% 24%,rgba(255,255,255,.8),transparent),radial-gradient(1px 1px at 77% 70%,rgba(255,255,255,.6),transparent),radial-gradient(1.5px 1.5px at 91% 15%,rgba(255,255,255,.85),transparent),radial-gradient(1px 1px at 45% 88%,rgba(255,255,255,.55),transparent),radial-gradient(ellipse at 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#5c2f3d;--d-line-strong: #7a4254}:root[data-skin=tet][data-theme=dark] [data-app-root]{background-image:radial-gradient(ellipse at 85% 100%,rgba(250,204,21,.13),transparent 52%),radial-gradient(ellipse at 50% -10%,#6e202c,#2a0f16 46%,#12060a)}:root[data-skin=tet]:not([data-theme=dark]) [data-app-root]{background-image:linear-gradient(135deg,#fffbeb,#fff1f2 55%,#fef3c7)}:root[data-skin=tet]{--skin-frame-corner: "🏮";--skin-frame-corner-2: "🌼"}:root[data-skin=tet]{--color-teal-50: oklch(97.1% .013 17.38);--color-teal-100: oklch(93.6% .032 17.717);--color-teal-200: oklch(88.5% .062 18.334);--color-teal-300: oklch(80.8% .114 19.571);--color-teal-400: oklch(70.4% .191 22.216);--color-teal-500: oklch(63.7% .237 25.331);--color-teal-600: oklch(57.7% .245 27.325);--color-teal-700: oklch(50.5% .213 27.518);--color-teal-800: oklch(44.4% .177 26.899);--color-teal-900: oklch(39.6% .141 25.723);--color-teal-950: oklch(25.8% .092 26.042);--color-accent: oklch(57.7% .245 27.325);--color-accent-2: oklch(76.9% .188 70.08)}.skin-frame{position:relative}.skin-frame:before,.skin-frame:after{content:var(--skin-frame-corner, none);position:absolute;font-size:1.7rem;line-height:1;pointer-events:none;filter:drop-shadow(0 2px 3px rgba(0,0,0,.35))}.skin-frame:before{top:-.8rem;left:-.7rem;transform:rotate(-14deg)}.skin-frame:after{content:var(--skin-frame-corner-2, var(--skin-frame-corner, none));right:-.7rem;bottom:-.8rem;transform:rotate(12deg)}.halloween-spider{position:fixed;top:60px;right:13%;z-index:39;display:flex;flex-direction:column;align-items:center;pointer-events:none;transform-origin:top center;animation:halloween-swing 3.4s ease-in-out infinite alternate}.halloween-spider__thread{width:1.5px;height:58px;background:linear-gradient(to bottom,#94a3b833,#cbd5e1e6);animation:halloween-drop 1.8s cubic-bezier(.3,1.4,.5,1) both;transform-origin:top center}.halloween-spider__body{font-size:1.45rem;line-height:1;margin-top:-2px;filter:drop-shadow(0 2px 3px rgba(0,0,0,.4))}.halloween-pumpkin{position:fixed;left:10px;bottom:10px;z-index:39;font-size:1.9rem;line-height:1;pointer-events:none;filter:drop-shadow(0 3px 6px rgba(0,0,0,.45));animation:halloween-bob 3.2s ease-in-out infinite}.halloween-moon{display:none;position:fixed;top:112px;right:22px;z-index:38;width:46px;height:46px;border-radius:50%;pointer-events:none;background:radial-gradient(circle at 35% 35%,#fffbeb,#fde68a 58%,#facc15);box-shadow:0 0 22px 6px #fde0474d}[data-theme=dark] .halloween-moon{display:block}@keyframes halloween-swing{0%{transform:rotate(-9deg)}to{transform:rotate(9deg)}}@keyframes halloween-drop{0%{transform:scaleY(.05)}to{transform:scaleY(1)}}@keyframes halloween-bob{0%,to{transform:translateY(0) rotate(-4deg)}50%{transform:translateY(-5px) rotate(4deg)}}@media(prefers-reduced-motion:reduce){.halloween-spider,.halloween-spider__thread,.halloween-pumpkin{animation:none}}.bien-sun{position:fixed;top:108px;left:14px;z-index:38;font-size:2rem;line-height:1;pointer-events:none;filter:drop-shadow(0 0 8px rgba(250,204,21,.45));animation:bien-sun-spin 30s linear infinite}.bien-fish{position:fixed;bottom:64px;left:-3rem;z-index:38;font-size:1.6rem;line-height:1;pointer-events:none;animation:bien-swim 22s linear infinite}.bien-boat{position:fixed;bottom:10px;right:16px;z-index:39;font-size:1.9rem;line-height:1;pointer-events:none;filter:drop-shadow(0 3px 6px rgba(0,0,0,.35));animation:bien-bob 3.6s ease-in-out infinite}@keyframes bien-sun-spin{to{transform:rotate(360deg)}}@keyframes bien-swim{0%{transform:translate(0)}to{transform:translate(calc(100vw + 6rem))}}@keyframes bien-bob{0%,to{transform:translateY(0) rotate(-3deg)}50%{transform:translateY(-4px) rotate(3deg)}}@media(prefers-reduced-motion:reduce){.bien-sun,.bien-fish,.bien-boat{animation:none}}[data-skin=noel][data-skin-fx=on] #school-header-nav:before{content:"";position:absolute;left:0;right:0;top:calc(100% + 6px);height:26px;pointer-events:none;background:radial-gradient(circle at 10px 17px,#ef4444 0 5px,transparent 6px) 0 0 / 120px 26px repeat-x,radial-gradient(circle at 40px 21px,#facc15 0 5px,transparent 6px) 0 0 / 120px 26px repeat-x,radial-gradient(circle at 70px 17px,#22c55e 0 5px,transparent 6px) 0 0 / 120px 26px repeat-x,radial-gradient(circle at 100px 21px,#60a5fa 0 5px,transparent 6px) 0 0 / 120px 26px repeat-x,linear-gradient(#475569,#475569) 0 2px / 100% 2px no-repeat;animation:xmas-twinkle 1.7s ease-in-out infinite alternate}[data-skin=noel][data-skin-fx=on] #school-header-nav:after{content:"";position:absolute;left:0;right:0;top:100%;height:9px;margin-top:-1px;pointer-events:none;background:radial-gradient(circle at 9px 0,#ffffff 0 7px,transparent 8px) 0 0 / 18px 9px repeat-x;filter:drop-shadow(0 1px 1px rgba(100,130,170,.5))}@keyframes xmas-twinkle{0%{filter:brightness(.7) saturate(1.1) drop-shadow(0 0 2px rgba(255,255,255,.2))}to{filter:brightness(1.3) saturate(1.5) drop-shadow(0 0 5px rgba(255,240,180,.7))}}.xmas-snowman,.xmas-reindeer,.tet-goat,.tet-flower{position:fixed;bottom:8px;z-index:39;line-height:1;pointer-events:none;filter:drop-shadow(0 3px 5px rgba(0,0,0,.4));animation:halloween-bob 3.6s ease-in-out infinite}.xmas-snowman{left:10px;font-size:2.1rem}.xmas-reindeer{left:58px;font-size:1.7rem;animation-delay:-1.4s}.tet-goat{left:10px;font-size:2.1rem}.tet-flower{left:58px;font-size:1.6rem;animation-delay:-1.4s}.xmas-sleigh{position:fixed;left:0;top:var(--sleigh-top, 22%);z-index:38;display:flex;align-items:flex-end;font-size:2.1rem;line-height:1;cursor:pointer;will-change:transform;animation:xmas-fly 16s linear forwards}.xmas-sleigh>span{position:relative;display:block}.xmas-sleigh>span:first-child:before{content:"";position:absolute;left:-3px;top:30%;width:14px;height:14px;border-radius:9999px;background:radial-gradient(circle,#ff3030 0,#ff3030 38%,#ff303000 72%);animation:xmas-nose .9s ease-in-out infinite alternate}.xmas-sleigh__santa{position:absolute!important;right:10%;top:-34%;font-size:1.5rem}.xmas-sleigh:after{content:"";position:absolute;left:100%;bottom:22%;width:240px;height:9px;border-radius:9999px;background:linear-gradient(to right,#fde047bf,#fde04700);filter:blur(2px);pointer-events:none}@keyframes xmas-fly{0%{transform:translate(105vw)}25%{transform:translate(72vw,-14px)}50%{transform:translate(36vw,8px)}75%{transform:translateY(-12px)}to{transform:translate(-360px)}}@keyframes xmas-nose{0%{opacity:.45;transform:scale(.85)}to{opacity:1;transform:scale(1.25)}}.xmas-gift{position:fixed;z-index:62;font-size:1.9rem;line-height:1;pointer-events:none;animation:xmas-gift-fall 1.5s cubic-bezier(.4,0,1,1) forwards}@keyframes xmas-gift-fall{0%{opacity:1;transform:translateY(0) rotate(0)}80%{opacity:1}to{opacity:0;transform:translateY(58vh) rotate(40deg)}}.fx-chip-gift{background:linear-gradient(135deg,#dc2626,#059669)}@media(prefers-reduced-motion:reduce){.xmas-snowman,.xmas-reindeer,.xmas-sleigh,.xmas-gift,[data-skin=noel] #school-header-nav:before{animation:none}}.fx-reward{position:fixed;left:50%;top:38%;z-index:63;display:flex;flex-direction:column;align-items:center;gap:.5rem;max-width:min(22rem,86vw);text-align:center;pointer-events:none;animation:fx-reward 2.6s ease-out forwards}.fx-reward__emoji{font-size:4.2rem;line-height:1;filter:drop-shadow(0 6px 10px rgba(0,0,0,.35))}.fx-reward__text{padding:.5rem 1rem;border-radius:1rem;font-size:.9rem;font-weight:800;color:#fff;background:linear-gradient(135deg,var(--color-accent),var(--color-accent-2));box-shadow:0 8px 22px #0000004d}@keyframes fx-reward{0%{opacity:0;transform:translate(-50%,20px) scale(.4)}16%{opacity:1;transform:translate(-50%,-6px) scale(1.18)}28%{transform:translate(-50%) scale(1)}82%{opacity:1;transform:translate(-50%,-8px) scale(1)}to{opacity:0;transform:translate(-50%,-34px) scale(.96)}}@media(prefers-reduced-motion:reduce){.fx-reward{animation:none;opacity:1;transform:translate(-50%)}}[data-skin=tet][data-skin-fx=on] #school-header-nav:before{content:"🏮🌼🌸🌼🏮🌼🌸🌼🏮🌼🌸🌼🏮🌼🌸🌼🏮🌼🌸🌼🏮🌼🌸🌼🏮🌼🌸🌼🏮🌼🌸🌼🏮🌼🌸🌼🏮🌼🌸🌼🏮🌼🌸🌼🏮🌼🌸🌼🏮🌼🌸🌼🏮🌼🌸🌼🏮🌼🌸🌼🏮🌼🌸🌼🏮🌼🌸🌼🏮🌼🌸🌼🏮🌼🌸🌼🏮🌼🌸🌼🏮🌼🌸🌼🏮🌼🌸🌼🏮🌼🌸🌼🏮🌼🌸🌼🏮🌼🌸🌼🏮🌼🌸🌼🏮🌼🌸🌼";position:absolute;left:0;right:0;top:calc(100% + 3px);height:22px;overflow:hidden;white-space:nowrap;font-size:15px;line-height:22px;letter-spacing:7px;pointer-events:none;transform-origin:top center;animation:tet-sway 4.5s ease-in-out infinite alternate}[data-skin=tet][data-skin-fx=on] #school-header-nav:after{content:"";position:absolute;left:0;right:0;top:100%;height:3px;pointer-events:none;background:linear-gradient(90deg,#92400e,#facc15 25%,#fde68a,#facc15 75%,#92400e)}@keyframes tet-sway{0%{transform:rotate(-.35deg) translate(-3px)}to{transform:rotate(.35deg) translate(3px)}}.tet-lantern{position:fixed;top:64px;z-index:39;display:flex;flex-direction:column;align-items:center;pointer-events:none;transform-origin:top center;animation:halloween-swing 4.2s ease-in-out infinite alternate}.tet-lantern--l{left:2%}.tet-lantern--r{right:2%;animation-delay:-2.1s}.tet-lantern__thread{width:1.5px;height:34px;background:linear-gradient(to bottom,#facc1533,#facc15)}.tet-lantern__body{font-size:2.5rem;line-height:1;margin-top:-2px;filter:drop-shadow(0 0 10px rgba(250,204,21,.55)) drop-shadow(0 3px 4px rgba(0,0,0,.4))}.tet-lixi{position:fixed;top:0;z-index:38;font-size:2.4rem;line-height:1;cursor:pointer;will-change:transform;filter:drop-shadow(0 0 8px rgba(250,204,21,.7));animation:tet-fall 11s linear forwards}@keyframes tet-fall{0%{transform:translateY(-80px) rotate(-12deg)}25%{transform:translate(34px,26vh) rotate(12deg)}50%{transform:translate(-24px,52vh) 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.wide3{grid-column:1/-1;max-width:380px}@media(max-width:860px){.top .stick{width:92px!important}.brandgrid{grid-template-columns:1fr}}.stick{background:none;padding:0}.mas{mix-blend-mode:normal}.lgi{background-size:contain}.mas,.lgi{filter:hue-rotate(var(--logo-rot,0deg))}.bav{width:70px;height:70px;border-radius:50%;background:#fffbf2;flex:none;overflow:hidden;position:relative;box-shadow:0 0 0 3px #ffffff8c}.bav .mas{position:absolute;top:0;right:0;bottom:0;left:0;width:100%;height:100%;aspect-ratio:auto;background-size:112%;background-position:50% 0%}.lk-d{display:none}@media(prefers-color-scheme:dark){:root:not([data-theme=light]) .stick .mas{filter:hue-rotate(var(--logo-rot,0deg)) drop-shadow(0 0 1px #FFF3E0) drop-shadow(0 0 1px #FFF3E0)}:root:not([data-theme=light]) .lk-l{display:none}:root:not([data-theme=light]) .lk-d{display:block}}:root[data-theme=dark] .stick .mas{filter:hue-rotate(var(--logo-rot,0deg)) drop-shadow(0 0 1px #FFF3E0) drop-shadow(0 0 1px #FFF3E0)}:root[data-theme=dark] .lk-l{display:none}:root[data-theme=dark] .lk-d{display:block}.slogan{padding:10px 20px 10px 14px;gap:16px}.bmas{width:66px;flex:none;margin:-12px 0 -6px;position:relative;z-index:1}.bmas .mas{filter:hue-rotate(var(--logo-rot,0deg)) drop-shadow(0 0 1.5px #FFF3E0) drop-shadow(0 0 1.5px #FFF3E0) drop-shadow(0 1px 2px oklch(.3 .05 50 / .35))}@media(max-width:860px){.bmas{width:54px}}.slogan{background:var(--accent-soft);color:var(--fg);border:1px solid color-mix(in oklch,var(--accent) 45%,transparent)}.slogan q{color:var(--fg)}.i-icon{background-image:url(/antmath/icon.webp);aspect-ratio:1/1}.i-wave{background-image:url(/antmath/mascot-wave.webp);aspect-ratio:480/634}.i-pencil{background-image:url(/antmath/mascot-pencil.webp);aspect-ratio:480/629}.i-cheer{background-image:url(/antmath/mascot-cheer.webp);aspect-ratio:480/578}.i-lock{background-image:url(/antmath/logo-lockup.webp);aspect-ratio:720/160}.i-lockd{background-image:url(/antmath/logo-lockup-dark.webp);aspect-ratio:720/160}.att button[aria-pressed=true].e{background:var(--accent-soft);border-color:var(--accent);color:var(--accent-text)}.sw{cursor:pointer}.brand b .m,h1 .m{color:var(--accent-text)}.skinbar{display:flex;align-items:center;justify-content:center;gap:10px;padding:6px 14px;margin:0 -16px;background:var(--accent);color:var(--accent-ink);font-size:13px;font-weight:700;text-align:center}.skinbar button{background:none;border:0;color:inherit;font-size:16px;line-height:1;padding:2px 6px}.fx{display:flex;align-items:center;gap:8px;font-size:13px}.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:12px}.login-card{border:1px dashed var(--line);border-radius:14px;padding:12px 14px;display:flex;flex-direction:column;gap:4px;break-inside:avoid;background:var(--surface)}@media print{body *{visibility:hidden}.print-area,.print-area *{visibility:visible}.print-area{position:absolute;left:0;top:0;width:100%}.login-card{border:1px solid #999;color:#000;background:#fff}}canvas.fixed{position:fixed;top:0;right:0;bottom:0;left:0;pointer-events:none;z-index:35}.ste{display:flex;flex-direction:column;gap:12px;color:var(--fg,#1f2937);font-size:14px;line-height:1.5}.ste-note{margin:0;color:var(--muted,#6b7280);font-size:13px}.ste-err{margin:0;padding:8px 12px;border-radius:10px;background:var(--bad-soft,#fee2e2);color:var(--bad,#b91c1c);font-size:13px}.ste-list{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:12px}.ste-item{display:flex;flex-direction:column;gap:8px;padding:12px;border:1px solid var(--line,#e5e7eb);border-radius:14px;background:var(--surface,#fff)}.ste-head{display:flex;align-items:center;flex-wrap:wrap;gap:8px}.ste-sw{width:22px;height:22px;border-radius:50%;flex:none;box-shadow:0 0 0 1px var(--line,#e5e7eb)}.ste-tag{font-size:11px;padding:1px 8px;border-radius:999px;background:var(--surface2,#f3f4f6);color:var(--muted,#6b7280)}.ste-tag-on{background:var(--accent-soft,#ccfbf1);color:var(--accent-text,#0f766e);font-weight:600}.ste-item label{display:flex;flex-direction:column;gap:4px;font-size:12px;font-weight:600;color:var(--muted,#6b7280)}.ste-item textarea{font:inherit;font-weight:400;color:var(--fg,#1f2937);background:var(--bg,#fff);border:1px solid var(--line,#e5e7eb);border-radius:10px;padding:8px 10px;resize:vertical}.ste-item textarea:focus-visible{outline:2px solid var(--accent,#0d9488);outline-offset:1px}.ste-actions{display:flex;align-items:center;flex-wrap:wrap;gap:8px}.ste-btn{font:inherit;font-size:13px;font-weight:600;padding:6px 12px;border-radius:10px;border:1px solid var(--line,#d1d5db);background:var(--surface,#fff);color:var(--fg,#1f2937);cursor:pointer}.ste-btn:disabled{opacity:.45;cursor:default}.ste-pri{background:var(--accent,#0d9488);border-color:transparent;color:var(--accent-ink,#fff)}.ste-status{font-size:12px;color:var(--muted,#6b7280)}