@font-face{font-family:Elms Sans;src:url(./ElmsSans-VariableFont_wght-vynVkYu7.ttf) format("truetype");font-style:normal;font-weight:100 900;font-display:swap}:root{color-scheme:light;font-family:Elms Sans,Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;color:#17351f;background:var(--leaf);font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;--ink: #17351f;--cream: #f7f1eb;--leaf: #9aae67;--leaf-dark: #4f7b49;--leaf-deep: #77934f;--orange: #ff7b25;--orange-deep: #f15a10;--cyan: #06b6d4;--indigo: #4f46e5;--glass: rgba(255, 255, 255, .18);--glass-strong: rgba(255, 255, 255, .32);--stroke: rgba(255, 255, 255, .46);--shadow: rgba(46, 70, 33, .2);--radius: 8px}*{box-sizing:border-box}html,body,#root{min-height:100%;background:var(--leaf)}body{min-width:320px;margin:0;overflow-x:hidden;-webkit-tap-highlight-color:transparent}button,input,select{font:inherit}button,select{cursor:pointer;touch-action:manipulation}button:disabled{cursor:not-allowed}.setup-app,.flow-app{position:relative;isolation:isolate;width:min(100%,430px);min-height:100vh;min-height:100dvh;margin:0 auto;overflow:hidden;color:#fff;background:var(--leaf)}.setup-app{display:grid;place-items:center;padding:max(24px,env(safe-area-inset-top)) 22px max(18px,env(safe-area-inset-bottom))}.flow-app{display:grid;grid-template-rows:auto 1fr auto;padding:max(18px,env(safe-area-inset-top)) 22px max(24px,env(safe-area-inset-bottom));transition:background .6s ease,color .6s ease}.flow-app.focus{background:#95a866}.flow-app.drift{background:var(--orange)}.flow-app.return{color:#4a3430;background:var(--cream)}.ambient-field{position:absolute;top:0;right:0;bottom:0;left:0;z-index:-1;overflow:hidden;background:linear-gradient(180deg,rgba(255,255,255,.1),transparent 38%),var(--leaf);transition:background .6s ease}.ambient-field:after{position:absolute;top:-16%;right:-16%;bottom:-16%;left:-16%;content:"";opacity:.52;background:conic-gradient(from 138deg at 52% 44%,#ffffff24,#4c743d29,#f7f1eb14,#63874829,#ffffff24),linear-gradient(128deg,rgba(255,255,255,.13),transparent 42%,rgba(73,110,59,.14)),linear-gradient(28deg,rgba(33,70,43,.12),transparent 48%,rgba(255,255,255,.08));background-size:142% 142%,118% 118%,100% 100%;filter:blur(18px) saturate(1.08);animation:mesh-breathe 9s ease-in-out infinite}.ambient-field.drift:after{background:conic-gradient(from 138deg at 52% 44%,#ffffff2e,#f25b102e,#ffbf701f,#cd4a0029,#ffffff2e),linear-gradient(128deg,rgba(255,255,255,.16),transparent 42%,rgba(203,69,0,.14)),linear-gradient(28deg,rgba(129,47,0,.1),transparent 48%,rgba(255,255,255,.1))}.ambient-field.return:after{background:conic-gradient(from 138deg at 52% 44%,#ffffff6b,#9aae6729,#f7f1eb47,#4f7b491f,#ffffff6b),linear-gradient(128deg,rgba(255,255,255,.2),transparent 42%,rgba(79,123,73,.09)),linear-gradient(28deg,rgba(74,52,48,.06),transparent 48%,rgba(255,255,255,.2))}.ambient-field.focus{background:linear-gradient(180deg,rgba(255,255,255,.1),transparent 38%),#95a866}.ambient-field.drift{background:linear-gradient(180deg,rgba(255,255,255,.1),transparent 38%),var(--orange)}.ambient-field.return{background:linear-gradient(180deg,rgba(255,255,255,.22),transparent 40%),var(--cream)}.ambient-field:before{position:absolute;top:0;right:0;bottom:0;left:0;content:"";opacity:.16;background-image:linear-gradient(rgba(255,255,255,.2) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.14) 1px,transparent 1px);background-size:34px 34px;-webkit-mask-image:linear-gradient(to bottom,transparent,#000 14%,#000 84%,transparent);mask-image:linear-gradient(to bottom,transparent,#000 14%,#000 84%,transparent);z-index:1}.pulse-circle,.flow-line,.grain{position:absolute;pointer-events:none;z-index:2}.pulse-circle{display:none;border-radius:50%;background:#4d70352e;transform:scale(calc(.92 + var(--phase-progress) * .14));transition:background .6s ease,transform .6s ease}.drift .pulse-circle{background:#cf4a002e}.return .pulse-circle{background:#16301e14}.pulse-circle-one{width:118vw;max-width:520px;aspect-ratio:1;left:50%;top:48%;translate:-50% -50%}.pulse-circle-two{width:76vw;max-width:330px;aspect-ratio:1;left:50%;top:50%;translate:-50% -50%}.pulse-circle-three{width:36vw;max-width:156px;aspect-ratio:1;left:50%;top:52%;translate:-50% -50%}.flow-line{display:none;left:-28%;width:156%;height:1px;opacity:.16;background:#ffffff6b;animation:line-drift 18s ease-in-out infinite alternate}.line-one{top:17%;rotate:-7deg}.line-two{bottom:8%;rotate:6deg;animation-duration:24s}.grain{top:0;right:0;bottom:0;left:0;opacity:.16;background-image:radial-gradient(rgba(255,255,255,.38) .7px,transparent .7px);background-size:16px 16px}.app-name,.setup-label,.math-tag{font-family:inherit;font-size:12px;font-weight:700;line-height:1.2;text-transform:lowercase}.app-name{margin:0;opacity:.72}.setup-card{display:grid;gap:22px;width:100%;max-width:360px;justify-items:center;text-align:center}.setup-card h1{max-width:300px;margin:0;font-size:clamp(52px,15vw,76px);font-weight:780;line-height:.95;letter-spacing:0}.setup-group{display:grid;gap:10px;justify-items:center;width:100%}.setup-label{opacity:.72}.preset-row{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:6px;width:100%}.preset-button,.custom-time,.sound-pill{color:#fff;background:transparent;border:0}.preset-button{position:relative;display:grid;align-content:center;gap:3px;min-height:50px;padding:4px 0;border-radius:var(--radius);text-align:center}.preset-button[data-active=true]{color:#fff}.preset-button[data-active=true]:after{position:absolute;left:50%;bottom:-7px;width:5px;height:5px;content:"";border-radius:9999px;background:currentColor;translate:-50% 0}.preset-button span{font-size:17px;font-weight:780;line-height:1.05}.preset-button small{opacity:.72;font-size:12px;line-height:1.15}.custom-time{position:relative;display:inline-grid;grid-template-columns:auto minmax(82px,auto) auto;align-items:center;justify-content:center;gap:8px;min-height:42px;padding:0;border-radius:var(--radius);width:auto}.custom-time span{font-size:15px;font-weight:720}.custom-time select{width:auto;min-height:38px;padding:0;color:#fff;background:transparent;border:0;border-radius:var(--radius);outline:none;-webkit-appearance:none;-moz-appearance:none;appearance:none;font-size:22px;font-weight:760;text-align:center}.custom-time option{color:#17351f}.sound-pill{position:relative;display:inline-flex;align-items:center;gap:10px;justify-self:center;justify-content:center;width:auto;max-width:min(100%,220px);min-height:42px;padding:0;border-radius:9999px}.sound-pill[data-compact=true]{justify-self:end;max-width:min(100%,190px)}.flow-app.return .sound-pill,.flow-app.return .quiet-icon{color:#4a3430;background:transparent}.sound-pill select{width:auto;min-width:0;max-width:142px;color:inherit;background:transparent;border:0;outline:none;-webkit-appearance:none;-moz-appearance:none;appearance:none;font-weight:700;text-align:center}.sound-pill option{color:#17351f}.start-control{display:inline-flex;align-items:center;justify-content:center;justify-self:center;gap:10px;min-width:132px;min-height:56px;padding:0 18px;color:#fff;background:transparent;border:0;border-radius:9999px;box-shadow:none;font-size:18px;font-weight:820}.start-control:disabled{opacity:.52}.flow-app.return .start-control{color:#4a3430}.flow-top{display:grid;grid-template-columns:48px minmax(0,1fr);align-items:center;gap:12px}.quiet-icon{display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;color:#fff;background:transparent;border:0;border-radius:9999px}.timer-stage{display:grid;align-content:center;justify-items:center;min-height:0;padding:16px 0 8px}.timer-ring{justify-self:center;position:relative;isolation:isolate;display:grid;place-items:center;width:min(76vw,320px);aspect-ratio:1;border-radius:50%;background:conic-gradient(#ffffff var(--ring-progress),rgba(255,255,255,.26) 0),#ffffff1f;box-shadow:inset 0 0 0 1px #ffffff2e,0 30px 80px var(--shadow)}.timer-ring:before,.timer-ring:after{position:absolute;content:"";z-index:-1;border-radius:50%;background:#4d70352e;transform:scale(calc(.96 + var(--phase-progress) * .08))}.timer-ring:before{width:172%;aspect-ratio:1}.timer-ring:after{width:124%;aspect-ratio:1}.drift .timer-ring:before,.drift .timer-ring:after{background:#cf4a002e}.return .timer-ring:before,.return .timer-ring:after{background:#16301e14}.flow-app.return .timer-ring{background:conic-gradient(var(--leaf-dark) var(--ring-progress),rgba(79,123,73,.2) 0),#4f7b4914}.ring-inner{display:grid;place-items:center;width:calc(100% - 34px);aspect-ratio:1;border-radius:50%;background:#46672a57}.drift .ring-inner{background:#d9530657}.return .ring-inner{background:#ffffffc7}.ring-inner span{font-size:clamp(42px,12vw,64px);font-weight:820;font-variant-numeric:tabular-nums;line-height:1}.ring-inner small{margin-top:-18px;opacity:.7;font-size:13px;font-weight:700}.audio-status,.audio-error{width:100%;margin:0;border-radius:var(--radius);padding:10px 12px;font-size:14px;line-height:1.4}.audio-status{color:#ffffffc2;text-align:center;font-weight:700}.flow-app.return .audio-status{color:#4a3430ad}.audio-status[data-status=running]{color:#fff}.flow-app.return .audio-status[data-status=running]{color:#4a3430}.audio-error{color:#7f1d1d;background:#ffffffc7}.flow-controls{display:flex;justify-content:center;padding-top:16px}.admin-page{min-height:100svh;padding:max(24px,env(safe-area-inset-top)) 18px 42px;color:#111827;background:linear-gradient(135deg,rgba(79,70,229,.08),transparent 34%),linear-gradient(35deg,rgba(6,182,212,.09),transparent 46%),#fff}.admin-hero,.math-section{width:min(100%,1040px);margin:0 auto}.admin-back{display:inline-flex;align-items:center;gap:8px;height:42px;padding:0 13px;color:#111827;background:#fff;border:1px solid #e5e7eb;border-radius:var(--radius)}.admin-hero{padding:16px 0 26px}.admin-hero .app-name{margin-top:34px;color:var(--cyan);opacity:1}.admin-hero h1,.math-section h2{margin:8px 0 0;font-weight:700;line-height:1.04;letter-spacing:0}.admin-hero h1{max-width:760px;font-size:clamp(44px,8vw,76px)}.admin-hero p{max-width:760px;margin:18px 0 0;color:#4b5563;font-size:18px;line-height:1.6}.math-section{padding:22px 0}.math-section h2{font-size:28px}.math-grid,.math-layer-list{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:12px}.math-grid{margin-top:16px}.sound-math-list{display:grid;gap:16px;margin-top:16px}.sound-math-card,.math-card{border:1px solid #e5e7eb;border-radius:var(--radius);background:#ffffffdb;box-shadow:0 18px 52px #11182714}.sound-math-card{display:grid;gap:18px;padding:18px}.sound-math-card h3,.math-card h3{margin:0;letter-spacing:0}.sound-math-card h3{margin-top:8px;font-size:26px}.sound-math-card p,.math-card p{color:#4b5563;line-height:1.55}.sound-math-card p{margin:8px 0 0}.math-tag{display:inline-flex;color:var(--indigo)}.math-card{padding:14px}.math-card h3{font-size:17px}.math-card code{display:block;margin:10px 0 0;padding:10px;overflow-wrap:anywhere;color:#fff;background:#1c1c1e;border-radius:var(--radius);font-family:JetBrains Mono,SFMono-Regular,Consolas,monospace;font-size:12px;line-height:1.5}.math-card p{margin:10px 0 0;font-size:14px}@media(min-width:760px){body{background:#d9c8ae}.setup-app,.flow-app{min-height:min(100dvh,920px);box-shadow:0 28px 90px #271f183d}.sound-math-card{grid-template-columns:.42fr 1fr}}@media(max-width:370px){.setup-app,.flow-app{padding-right:16px;padding-left:16px}.preset-button{min-height:66px;padding:8px}.preset-button span{font-size:16px}.timer-stage h1{font-size:50px}}@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation-duration:1ms!important;scroll-behavior:auto!important;transition-duration:1ms!important}}@keyframes line-drift{0%{translate:-3% 0;opacity:.24}to{translate:3% 12px;opacity:.56}}@keyframes mesh-breathe{0%,to{opacity:.42;transform:translate3d(-1.5%,-.8%,0) scale(1);background-position:44% 46%,0% 0%,50% 50%}50%{opacity:.62;transform:translate3d(1.2%,1%,0) scale(1.035);background-position:56% 52%,100% 72%,50% 50%}}