:root{--paper:#faf8f3;--card:#fff;--ink:#1d241f;--muted:#69736b;--green:#22684e;--green2:#1a5440;--soft:#e9f1eb;--line:#dedfd6;--red:#a73e2e;--redsoft:#f7e8e4;--amber:#8a5a00;--ambersoft:#fbf0d4;--nav:64px}
*{box-sizing:border-box}html{-webkit-text-size-adjust:100%}body{margin:0;background:var(--paper);color:var(--ink);font:15px/1.55 Inter,system-ui,sans-serif;overflow-x:hidden}
h1,h2,h3{font-family:Fraunces,Georgia,serif;line-height:1.2;font-weight:500;margin:0 0 8px}h1{font-size:30px}h2{font-size:22px}h3{font-size:17px}p{margin:0 0 10px}
button,input,select,textarea{font:inherit;color:inherit}button,a,input,select,textarea{touch-action:manipulation}
button,.button{color:inherit;cursor:pointer;min-height:44px;padding:9px 15px;border:1px solid var(--line);background:var(--card);border-radius:8px;text-decoration:none;display:inline-flex;align-items:center;justify-content:center;gap:7px;font-weight:500;white-space:nowrap}
button:hover,.button:hover{border-color:var(--green)}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:2px solid var(--green);outline-offset:2px}button:disabled{opacity:.5;cursor:default}
.primary{background:var(--green);border-color:var(--green);color:#fff}.primary:hover{background:var(--green2)}.danger{color:var(--red)}.small{min-height:36px;padding:5px 11px;font-size:13px}.ghost{border-color:transparent;background:transparent}
.ico{width:20px;height:20px;stroke:currentColor;fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;flex:none}
input,select,textarea{width:100%;border:1px solid var(--line);border-radius:8px;padding:10px 11px;background:var(--card);min-height:44px}textarea{min-height:90px;resize:vertical}
label{display:block;font-size:13px;font-weight:600;margin:12px 0 5px}label.inline{display:flex;gap:8px;align-items:center;font-weight:500;font-size:14px}label.inline input{width:auto;min-height:0}
.muted{color:var(--muted)}.hint{font-size:13px;color:var(--muted)}.eyebrow{font-size:12px;letter-spacing:.08em;text-transform:uppercase;color:var(--green);font-weight:700}
.row{display:flex;gap:10px;align-items:center;flex-wrap:wrap}.between{justify-content:space-between}.grow{flex:1}.hidden{display:none!important}.stack>*+*{margin-top:12px}
.card{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:16px}
.grid{display:grid;gap:12px;grid-template-columns:repeat(auto-fit,minmax(220px,1fr))}.grid2{display:grid;gap:12px;grid-template-columns:1fr 1fr}
.shell{display:block;min-height:100vh}.side{display:none}.main{padding:16px 16px calc(var(--nav) + 28px);max-width:980px;margin:0 auto}
.top{display:flex;align-items:center;gap:10px;padding:10px 16px;border-bottom:1px solid var(--line);background:var(--paper);position:sticky;top:0;z-index:5}
.brand{display:flex;align-items:center;gap:9px;font-family:Fraunces,serif;font-size:19px;color:var(--ink);text-decoration:none;font-weight:600}.brand img{width:28px;height:28px}
.tabbar{position:fixed;left:0;right:0;bottom:0;background:var(--card);border-top:1px solid var(--line);display:flex;height:calc(var(--nav) + env(safe-area-inset-bottom));padding-bottom:env(safe-area-inset-bottom);z-index:6}
.tabbar a{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;font-size:11px;font-weight:600;color:var(--muted);text-decoration:none;min-width:0}.tabbar a.on{color:var(--green)}
.tabbar a.on .ico{stroke-width:2.1}
@media(min-width:820px){.shell{display:grid;grid-template-columns:230px 1fr}.side{display:flex;flex-direction:column;gap:3px;padding:18px 12px;border-right:1px solid var(--line);position:sticky;top:0;height:100vh;background:#f5f3ec}
.side a{display:flex;gap:11px;align-items:center;padding:10px 12px;border-radius:8px;color:var(--ink);text-decoration:none;font-weight:500}.side a:hover{background:#ebe8de}.side a.on{background:var(--soft);color:var(--green);font-weight:600}
.tabbar{display:none}.main{padding:26px 28px 40px;width:100%}.top{display:none}.side .brand{padding:4px 10px 16px}}
.pagehead{display:flex;justify-content:space-between;align-items:flex-end;gap:12px;flex-wrap:wrap;margin-bottom:14px}
.stat{padding:14px 16px}.stat b{font-family:Fraunces,serif;font-size:28px;font-weight:500;display:block;line-height:1.1}.stat span{font-size:13px;color:var(--muted)}
.bar{height:10px;background:var(--soft);border-radius:6px;overflow:hidden;margin:10px 0 6px}.bar i{display:block;height:100%;background:var(--green)}
.list{border:1px solid var(--line);border-radius:12px;background:var(--card);overflow:hidden}.item{display:flex;gap:12px;align-items:center;padding:12px 14px;border-top:1px solid var(--line)}.item:first-child{border-top:0}
.item .t{flex:1;min-width:0}.item .t b{display:block;font-weight:600;overflow:hidden;text-overflow:ellipsis}.item .t span{font-size:13px;color:var(--muted)}
.avatar{width:38px;height:38px;border-radius:50%;background:var(--soft);color:var(--green);display:grid;place-items:center;font-weight:700;flex:none}
.chip{display:inline-flex;align-items:center;padding:2px 9px;border-radius:99px;font-size:12px;font-weight:600;background:var(--soft);color:var(--green)}.chip.red{background:var(--redsoft);color:var(--red)}.chip.amber{background:var(--ambersoft);color:var(--amber)}.chip.grey{background:#eeeee8;color:var(--muted)}
.seg{display:inline-flex;border:1px solid var(--line);border-radius:8px;overflow:hidden;flex:none}.seg button{border:0;border-radius:0;min-height:40px;min-width:42px;padding:6px 10px;background:var(--card)}.seg button+button{border-left:1px solid var(--line)}
.seg button.P.on{background:var(--green);color:#fff}.seg button.A.on{background:var(--red);color:#fff}.seg button.L.on{background:var(--amber);color:#fff}
.filters{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:12px}.filters>*{width:auto;flex:1;min-width:130px}
.pills{display:flex;gap:6px;overflow-x:auto;margin-bottom:12px;padding-bottom:2px}.pills button{min-height:36px;padding:4px 13px;border-radius:99px;font-size:13px}.pills button.on{background:var(--ink);color:var(--paper);border-color:var(--ink)}
dialog{border:0;border-radius:14px;padding:0;width:min(520px,calc(100vw - 24px));max-height:calc(100vh - 32px);box-shadow:0 20px 60px #0004}dialog::backdrop{background:#1d241f88}#modal-content{padding:20px;overflow:auto;max-height:calc(100vh - 32px)}
#toast{position:fixed;left:50%;bottom:calc(var(--nav) + 18px);transform:translateX(-50%) translateY(20px);background:var(--ink);color:var(--paper);padding:10px 16px;border-radius:8px;opacity:0;pointer-events:none;transition:.2s;z-index:50;max-width:90vw;font-size:14px}#toast.on{opacity:1;transform:translateX(-50%)}
.empty{text-align:center;padding:34px 18px;color:var(--muted)}.empty .ico{width:34px;height:34px;color:#b8bdb2;margin-bottom:6px}
.narrow{max-width:420px;margin:0 auto;padding:22px 16px}.wrap{max-width:1000px;margin:0 auto;padding:0 18px}
.hero{padding:44px 0 26px;max-width:640px}.hero h1{font-size:40px}.feat{display:grid;gap:12px;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));padding-bottom:30px}.feat .card h3{display:flex;gap:9px;align-items:center}.feat .ico{color:var(--green)}
.notice{background:var(--ambersoft);border:1px solid #ecd9a0;border-radius:10px;padding:10px 12px;font-size:13.5px}.err{color:var(--red);font-size:13.5px;min-height:20px}
.cal{display:grid;grid-template-columns:repeat(7,1fr);gap:4px;margin-top:8px}.cal div{aspect-ratio:1;display:grid;place-items:center;border-radius:6px;font-size:12px;background:#f1efe8;color:var(--muted)}.cal .P{background:var(--green);color:#fff}.cal .A{background:var(--red);color:#fff}.cal .L{background:var(--amber);color:#fff}.cal .h{background:none;font-weight:700;aspect-ratio:auto}
table{width:100%;border-collapse:collapse;font-size:14px}th,td{text-align:left;padding:8px 6px;border-bottom:1px solid var(--line)}
.qr{display:grid;place-items:center;padding:10px}.qr svg,.qr img{width:200px;height:200px}
footer.legal{padding:24px 16px 90px;text-align:center;font-size:13px;color:var(--muted)}footer.legal a{color:var(--muted);margin:0 8px}
.receipt{border:1px dashed var(--muted);padding:16px;border-radius:8px}
@media print{body>*:not(dialog){display:none!important}dialog{position:static;box-shadow:none;width:100%}#modal-content .noprint{display:none}}
@media(max-width:380px){h1{font-size:26px}.hero h1{font-size:32px}.grid2{grid-template-columns:1fr}.item{padding:10px}.main{padding-left:12px;padding-right:12px}}
@media(prefers-reduced-motion:reduce){*{transition:none!important}}

#kids>div>*+*{margin-top:12px}.grid>.card{margin:0}
.stats{grid-template-columns:repeat(auto-fit,minmax(140px,1fr))}.stats .stat b{font-size:24px}.stats .stat:last-child{grid-column:1/-1}@media(min-width:600px){.stats .stat:last-child{grid-column:auto}}

/* v3 polish */
.card{box-shadow:0 1px 0 rgba(29,36,31,.04),0 6px 18px -12px rgba(29,36,31,.25);transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease}
@media(hover:hover){.feat .card:hover,.grid>.card:hover{transform:translateY(-3px);box-shadow:0 1px 0 rgba(29,36,31,.04),0 14px 26px -14px rgba(29,36,31,.35);border-color:#c9cbbf}}
button,.button{transition:transform .12s ease,background .15s ease,border-color .15s ease,box-shadow .15s ease}button:active,.button:active{transform:scale(.97)}
.primary{box-shadow:0 6px 14px -8px rgba(34,104,78,.7)}
#app>*{animation:vin .28s ease both}@keyframes vin{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}
.pre{opacity:0;transform:translateY(16px)}.rv,.feat .card,.steps>div{transition:opacity .5s ease,transform .5s ease,box-shadow .2s ease,border-color .2s ease}
.herogrid{display:grid;gap:26px;align-items:center}.mark{box-shadow:inset 0 -.32em 0 #cfe3d6;padding:0 2px}
.mock{position:relative;max-width:380px;width:100%;margin:6px auto 38px}
.mock-b{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:14px;box-shadow:0 2px 0 rgba(29,36,31,.04),0 26px 40px -24px rgba(29,36,31,.45);transform:rotate(-1.4deg);animation:float 6s ease-in-out infinite}
@keyframes float{50%{transform:rotate(-1.4deg) translateY(-6px)}}
.mock-h{display:flex;justify-content:space-between;margin-bottom:8px;font-size:14px}.mock-h span{color:var(--muted);font-size:12px}
.mock-r{display:flex;align-items:center;gap:10px;padding:8px 0;border-top:1px solid #efeee6;font-size:13.5px}.mock-r i{font-style:normal;width:30px;height:30px;border-radius:50%;background:var(--soft);color:var(--green);display:grid;place-items:center;font-size:11px;font-weight:700}
.mock-r span{flex:1;display:flex;flex-direction:column;line-height:1.25}.mock-r small{color:var(--muted);font-size:11.5px}.mock-r em{font-style:normal;font-weight:600}.mock-r u{text-decoration:none;font-size:12px;color:#fff;background:var(--green);padding:4px 9px;border-radius:6px}
.mock-bar{height:6px;background:#ebe9e0;border-radius:4px;margin-top:10px;overflow:hidden}.mock-bar span{display:block;height:100%;background:var(--green);border-radius:4px;animation:grow 1.4s .3s ease both}@keyframes grow{from{width:0!important}}
.mock-f{display:block;margin-top:6px;color:var(--muted);font-size:11.5px}
.mock-s{position:absolute;right:-6px;bottom:-16px;background:var(--ink);color:var(--paper);border-radius:10px;padding:9px 13px;font-size:13px;box-shadow:0 14px 24px -12px rgba(0,0,0,.5);transform:rotate(1.6deg);display:flex;flex-direction:column}.mock-s small{opacity:.7}
.steps{display:grid;gap:12px;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));margin:6px 0 26px}.steps>div{padding:4px 0 0}.steps b{display:inline-grid;place-items:center;width:30px;height:30px;border-radius:50%;border:1.5px solid var(--green);color:var(--green);font-family:Fraunces,serif;margin-bottom:8px}
@media(min-width:760px){.herogrid{grid-template-columns:1.15fr .85fr}.hero{padding-top:56px}.hero h1{font-size:50px}}
@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}.pre{opacity:1;transform:none}}
@media(min-width:560px){.feat{grid-template-columns:1fr 1fr}}@media(min-width:1000px){.feat{grid-template-columns:repeat(4,1fr)}}.notice a{color:var(--green);font-weight:600}

#offbar{position:fixed;left:0;right:0;top:0;z-index:60;background:#3b3b36;color:#fff;font-size:14px;text-align:center;padding:8px 12px;padding-top:calc(8px + env(safe-area-inset-top));transform:translateY(-110%);visibility:hidden;transition:transform .2s}#offbar.on{transform:none;visibility:visible}

html[data-theme=dark]{--paper:#131916;--card:#1b231f;--ink:#e7ece5;--muted:#9ba69d;--green:#3d8e6c;--green2:#47a07c;--soft:#223029;--line:#2c3832;--red:#d9705f;--redsoft:#3a211d;--amber:#e0b04f;--ambersoft:#352b14;color-scheme:dark}
html[data-theme=dark] .bar{background:#2c3832}html[data-theme=dark] dialog{background:var(--card);color:var(--ink)}html[data-theme=dark] dialog::backdrop{background:#000a}
html[data-theme=dark] a{color:inherit}html[data-theme=dark] .primary{color:#fff}
.prefs{display:flex;gap:8px;justify-content:center;align-items:center;flex-wrap:wrap;padding:6px 0 18px}.prefs select{width:auto;min-height:36px;padding:4px 8px}.prefs .small{min-height:36px}.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}
input[type=file]{padding:8px;min-height:44px}
@media print{.rcard{break-inside:avoid;page-break-after:always;margin:0 0 24px}.prefs{display:none!important}}
[hidden]{display:none!important}
html[data-theme=dark] .cal div:not(.P):not(.A):not(.L):not(.h){background:#26302b}html[data-theme=dark] .side a:hover{background:#26302b}html[data-theme=dark] .mock-bar{background:#2c3832}

/* glass + button layout polish */
.top{background:color-mix(in srgb,var(--paper) 80%,transparent);backdrop-filter:blur(14px) saturate(1.15);-webkit-backdrop-filter:blur(14px) saturate(1.15)}
.tabbar{background:color-mix(in srgb,var(--card) 82%,transparent);backdrop-filter:blur(16px) saturate(1.15);-webkit-backdrop-filter:blur(16px) saturate(1.15);box-shadow:0 -1px 12px rgba(29,36,31,.05)}
dialog::backdrop{backdrop-filter:blur(3px);-webkit-backdrop-filter:blur(3px)}
#toast{background:color-mix(in srgb,var(--ink) 88%,transparent);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px)}
#offbar{background:color-mix(in srgb,#3b3b36 88%,transparent);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px)}
button,.button{white-space:normal;text-align:center;line-height:1.25;hyphens:none}
.seg button,.pills button,.tabbar a{white-space:nowrap}
@media(min-width:820px){.side{background:color-mix(in srgb,#f5f3ec 72%,transparent);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px)}.main{max-width:1060px}}
@media(max-width:520px){.row>button,.row>.button{flex:1 1 auto}.pagehead{align-items:stretch;flex-direction:column}.pagehead .row{justify-content:flex-start}}
/* Notes-first study space and touch-friendly PDF reader. */
.study-preview{padding:28px;align-self:center}.study-preview .item{gap:12px}.study-preview .ico{color:var(--green)}
.pdf-scroll{overflow:auto;max-height:58vh;background:#e4e5df;border:1px solid var(--line);border-radius:8px;padding:1px;overscroll-behavior:contain}#pdf-sheet{position:relative;background:white}#pdf-sheet canvas{display:block;width:100%;height:100%}#pdf-marks{position:absolute;inset:0}.pdf-tools{gap:6px}.pdf-tools button{padding:8px 12px}.pdf-tools button[aria-pressed=true]{background:var(--green);color:white}.pdf-tools input[type=color]{width:40px;min-height:36px;padding:2px}dialog:has(#pdf-sheet){width:min(1000px,96vw);max-width:1000px}dialog:has(#pdf-sheet) h2{overflow-wrap:anywhere;font-size:21px}@media(max-width:600px){.study-preview{padding:20px}dialog:has(#pdf-sheet){padding:14px}.pdf-scroll{max-height:50vh}}