:root{--navy:#1f2a44;--navy-2:#2c3a5c;--orange:#e8811d;--orange-ink:#a65410;--cream:#fbf6ec;--card:#fff;--line:#e7dfcf;--muted:#5d6475;--ok:#1e7a4c;--ok-bg:#e3f4ea;--warn:#8a5a00;--warn-bg:#fdf0d2;--bad:#b3261e;--bad-bg:#fbe5e3;--radius:14px;--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light;color:var(--navy);background:var(--cream);-webkit-text-size-adjust:100%;font-family:system-ui,-apple-system,Segoe UI,Roboto,Noto Sans,sans-serif;line-height:1.5}*{box-sizing:border-box}body{background:var(--cream);margin:0}h1{margin:.2rem 0 .8rem;font-size:1.6rem;line-height:1.2}h2{margin:0 0 .5rem;font-size:1.15rem}p{margin:.4rem 0}code{background:#f1ebde;border-radius:4px;padding:0 4px}a{color:var(--orange-ink)}.page{margin:0 auto;padding:20px 16px 40px}.narrow{max-width:520px}.wide{max-width:1100px}.center{text-align:center}.stack{flex-direction:column;gap:12px;margin-top:12px;display:flex}.row{flex-wrap:wrap;align-items:center;gap:12px;display:flex}.between{justify-content:space-between;align-items:flex-start}.muted{color:var(--muted)}.small{font-size:.85rem}.right{text-align:right}.eyebrow{text-transform:uppercase;letter-spacing:.08em;color:var(--orange-ink);margin:0;font-size:.75rem;font-weight:700}.section{margin-top:28px}.error{color:var(--bad);background:var(--bad-bg);border-radius:10px;padding:8px 12px}.notice{background:var(--warn-bg);color:var(--warn);border-radius:10px;padding:10px 12px}button{font:inherit;color:var(--navy);background:var(--card);border:1.5px solid var(--line);cursor:pointer;border-radius:12px;min-height:40px;padding:8px 14px}button:hover{border-color:#cfc3aa}button:disabled{opacity:.5;cursor:default}button.primary{background:var(--orange);border-color:var(--orange);color:#1b1206;font-weight:700}button.big{min-height:56px;padding:12px 20px;font-size:1.1rem}button.link{color:var(--orange-ink);background:0 0;border:none;min-height:0;padding:4px 6px}button.link.danger{color:var(--bad)}input,select,textarea{font:inherit;color:var(--navy);border:1.5px solid var(--line);background:#fff;border-radius:10px;width:100%;min-height:44px;padding:10px 12px}textarea{min-height:0}.field{flex-direction:column;flex:1;gap:4px;font-size:.9rem;display:flex}.check{align-items:flex-start;gap:10px;display:flex}.check input{flex:none;width:22px;height:22px;min-height:0;margin-top:2px}.check.small input{width:18px;height:18px}.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);margin:14px 0;padding:16px}.consent ul{margin:.5rem 0;padding-left:1.2rem}.consent li{margin:.3rem 0}.class-card h2{margin:2px 0;font-size:1.3rem}.class-card button{width:100%;margin-top:10px}.status{font-weight:600}.tip{color:#23406e;background:#eaf1fb;border-radius:12px;padding:10px 12px;font-size:.95rem}.status.ok{color:var(--ok)}.status.warn{color:var(--warn)}.badge{color:var(--navy-2);white-space:nowrap;background:#eef0f5;border-radius:999px;padding:4px 10px;font-size:.8rem;font-weight:700}.badge.ok{background:var(--ok-bg);color:var(--ok)}.badge.warn{background:var(--warn-bg);color:var(--warn)}.logo{border:1px solid var(--line);background:#fff url(/icons/icon-192.png) 50%/cover;border-radius:24px;width:120px;height:120px;margin:24px auto 8px}.celebrate{margin:24px 0 0;font-size:4rem}.player{flex-direction:column;max-width:1000px;min-height:100dvh;margin:0 auto;display:flex}.player-top{border-bottom:1px solid var(--line);background:var(--cream);z-index:2;align-items:center;gap:8px;padding:8px 12px;display:flex;position:sticky;top:0}.player-title{text-overflow:ellipsis;white-space:nowrap;flex:1;font-weight:700;overflow:hidden}.player-body{flex:1;padding:12px}.player-nav{padding:10px 12px calc(10px + env(safe-area-inset-bottom));background:var(--cream);border-top:1px solid var(--line);justify-content:space-between;align-items:center;gap:8px;display:flex;position:sticky;bottom:0}.player-nav button{flex:0 40%}.slide{border:1px solid var(--line);background:#fff;border-radius:10px;overflow:auto}.slide img{width:100%;height:auto;display:block}.slide.zoomed img{width:220%;max-width:none}.hint{color:var(--muted);text-align:center;font-size:.85rem}.answers h2{margin-bottom:8px}.answer-layout .slide img{object-fit:contain;max-height:38vh}.answer-layout .slide.zoomed img{max-height:none}.answer-count{margin:10px 0 0;font-size:.95rem}@media (width>=760px){.answer-layout{grid-template-columns:minmax(0,1.5fr) minmax(0,1fr);align-items:start;gap:16px;display:grid}.answer-layout .slide-col{position:sticky;top:64px}.answer-layout .slide img{max-height:none}.answer-layout .items{margin-top:8px}.answer-layout .option{min-height:44px}}.items{flex-direction:column;gap:10px;margin:12px 0;padding:0;list-style:none;display:flex}.item{border:1px solid var(--line);background:#fff;border-radius:12px;padding:10px 12px}.item-head{align-items:baseline;gap:10px;margin-bottom:8px;display:flex}.item-num{background:var(--navy);color:#fff;border-radius:50%;flex:none;place-items:center;width:30px;height:30px;font-weight:700;display:grid}.options{grid-template-columns:repeat(4,1fr);gap:8px;display:grid}.options.wide{grid-template-columns:1fr}.option{min-height:52px;font-size:1.2rem;font-weight:700}.options.wide .option{text-align:left;font-size:1rem;font-weight:500}.option.chosen{background:var(--orange);border-color:var(--orange);color:#1b1206}.tutor-top{background:var(--navy);color:#fff;align-items:center;gap:12px;padding:10px 16px;display:flex}.tutor-top .brand{color:#fff;margin-right:auto;font-weight:700}.tutor-top .link{color:#f7c48e}.tutor-top .muted{color:#c5cbe0}.panel{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);margin:16px 0;padding:16px}.two-col{grid-template-columns:repeat(auto-fit,minmax(320px,1fr));gap:16px;display:grid}.two-col .panel{margin:0}.inline-form{flex-wrap:wrap;align-items:flex-end;gap:8px;margin:8px 0;display:flex}.inline-form>input,.inline-form>select{flex:160px;width:auto}.rows{margin:12px 0 0;padding:0;list-style:none}.rows li{border-top:1px solid var(--line);flex-wrap:wrap;justify-content:space-between;align-items:center;gap:8px;padding:10px 0;display:flex}.rows li.inactive{opacity:.6}.actions{flex-wrap:wrap;gap:4px;display:flex}table.list{border-collapse:collapse;width:100%;margin-top:8px}table.list th{text-align:left;color:var(--muted);padding:6px 4px;font-size:.8rem;font-weight:600}table.list td{border-top:1px solid var(--line);padding:8px 4px}.steps{padding:0;list-style:none}.step{background:var(--card);border:1px solid var(--line);border-radius:12px;margin:8px 0;padding:8px 10px}.step.hidden-step{background:#f3efe6}.step.hidden-step .thumb{opacity:.45}.step-row{flex-wrap:wrap;align-items:center;gap:12px;display:flex}.step-num{text-align:center;width:28px;color:var(--muted);font-weight:700}.thumb{aspect-ratio:16/9;object-fit:cover;border:1px solid var(--line);background:#fff;border-radius:6px;width:128px}.thumb.placeholder{place-items:center;font-size:1.6rem;display:grid}.step-info{flex-direction:column;flex:1;gap:2px;min-width:180px;display:flex}.step-actions{flex-wrap:wrap;align-items:center;gap:4px;display:flex}.sheet-form{border-top:1px dashed var(--line);flex-direction:column;gap:8px;margin-top:10px;padding:12px;display:flex}.prepost{background:var(--card);border:2px solid var(--orange);border-radius:var(--radius);justify-content:center;align-items:center;gap:24px;margin:16px 0;padding:16px;display:flex}.prepost div{flex-direction:column;align-items:center;display:flex}.prepost strong{font-size:2.4rem;line-height:1.1}.prepost .arrow{color:var(--orange);font-size:2rem}.grid-items{grid-template-columns:repeat(auto-fill,minmax(84px,1fr));gap:8px;display:grid}.gi{border:1px solid var(--line);border-radius:10px;flex-direction:column;align-items:center;padding:8px;display:flex}.gi.right{background:var(--ok-bg);border-color:#b9e0c9}.gi.wrong{background:var(--bad-bg);border-color:#f2c3be}.gi-num{color:var(--muted);font-size:.75rem}.gi-ans{font-size:1.5rem;font-weight:800}.gi-key{color:var(--muted);font-size:.75rem}.video-tile{background:var(--navy);aspect-ratio:4/3;border-radius:12px;position:relative;overflow:hidden}.video-tile video{object-fit:cover;width:100%;height:100%;display:block}.video-tile video.mirror{transform:scaleX(-1)}.video-off{color:#fff;place-items:center;width:100%;height:100%;font-size:1.8rem;font-weight:800;display:grid}.video-label{color:#fff;text-shadow:0 1px 2px #0008;font-size:.75rem;font-weight:700;position:absolute;bottom:4px;left:6px}.toast{background:var(--navy);color:#fff;z-index:5;border-radius:999px;margin:0;padding:10px 16px;font-weight:600;position:fixed;bottom:96px;left:50%;transform:translate(-50%)}.live-strip{border-bottom:1px solid var(--line);background:#fff;align-items:center;gap:10px;padding:8px 12px;display:flex}.live-strip.off{flex-direction:column;justify-content:center}.live-strip.off button{width:100%}.live-strip.warn{background:var(--warn-bg)}.live-strip .tutor-tile{flex:none;width:96px}.live-strip .self-tile{flex:none;align-self:flex-end;width:56px}.live-body{flex-direction:column;flex:1;gap:6px;min-width:0;display:flex}.live-msg{margin:0;font-size:1.05rem;font-weight:700}.live-msg.warn,.warn-text{color:var(--warn)}.live-dot{background:#e0362c;border-radius:50%;width:10px;height:10px;margin-right:4px;animation:1.6s infinite pulse;display:inline-block}@keyframes pulse{50%{opacity:.35}}.live-grid{grid-template-columns:minmax(0,1fr) 280px;gap:16px;margin-top:12px;display:grid}@media (width<=860px){.live-grid{grid-template-columns:1fr}}.stage img{border:1px solid var(--line);background:#fff;border-radius:10px;width:100%;display:block}.stage-empty{aspect-ratio:16/9;border:1px solid var(--line);background:#fff;border-radius:10px;place-items:center;font-size:1.4rem;font-weight:700;display:grid}.stage-note{background:var(--ok-bg);color:var(--ok);border-radius:10px;padding:8px 12px}.stage-nav{justify-content:space-between;align-items:center;gap:8px;margin:10px 0;display:flex}.stage-nav button{flex:0 30%}.filmstrip{gap:6px;padding-bottom:6px;display:flex;overflow-x:auto}.film{aspect-ratio:16/9;border:2px solid #0000;border-radius:6px;flex:none;place-items:center;width:92px;min-height:0;padding:0;display:grid;position:relative;overflow:hidden}.film img{object-fit:cover;width:100%;height:100%}.film.current{border-color:var(--orange)}.film.child:after{content:"🧒";font-size:.9rem;position:absolute;top:2px;right:2px}.film-num{color:#fff;text-shadow:0 1px 2px #000a;font-size:.7rem;font-weight:800;position:absolute;bottom:1px;left:3px}.people{flex-direction:column;gap:10px;display:flex}.people .self-tile{width:50%}.signal{background:#eef0f5;border-radius:10px;padding:6px 10px;font-weight:700}.signal.excellent,.signal.good{background:var(--ok-bg);color:var(--ok)}.signal.poor{background:var(--warn-bg);color:var(--warn)}.signal.lost{background:var(--bad-bg);color:var(--bad)}.child-at{margin:0;font-weight:600}.live-strip.call{background:#e6f0ff}.suggest{background:var(--warn-bg);color:var(--warn);border:1.5px solid #f0c66c;border-radius:12px;flex-direction:column;gap:8px;padding:10px 12px;display:flex}.talk-modes{flex-wrap:wrap;align-items:center;gap:6px;display:flex}.talk-modes button{min-height:36px;padding:6px 10px;font-size:.9rem}.phone-card{background:#e6f0ff;border-radius:12px;flex-direction:column;gap:4px;padding:12px;display:flex}.phone-number{color:#23406e;font-size:1.6rem;font-weight:800;text-decoration:none}.voice-panel{border:1px solid var(--line);background:#fff;border-radius:12px;flex-direction:column;gap:8px;padding:10px 12px;display:flex}.voice-panel.kid{margin:8px 12px 0}.voice-title{margin:0;font-weight:700}.voice-list{flex-direction:column;gap:6px;max-height:180px;display:flex;overflow-y:auto}.vmsg{background:#f3efe6;border-radius:10px;align-items:center;gap:8px;max-width:90%;padding:6px 8px;display:flex}.vmsg.mine{background:#fde3c8;align-self:flex-end}.vmsg.new{outline:2px solid var(--orange)}.new-tag{color:var(--orange-ink);font-weight:800}.vplay{border-radius:50%;width:40px;min-height:36px;padding:0}.rec-btn{min-height:60px;color:var(--bad);background:#fbe5e3;border-color:#f2c3be;width:100%;font-size:1.15rem;font-weight:800}.rec-btn.recording{background:var(--bad);color:#fff;border-color:var(--bad);flex:1;width:auto;animation:1.2s infinite pulse}.rec-row{flex-wrap:wrap}.rec-bar{background:#eee6d6;border-radius:3px;width:100%;height:6px;overflow:hidden}.rec-bar div{background:var(--bad);height:100%}.voice{background:#eef0f5;border-radius:10px;margin:0;padding:6px 10px}.voice.ok{background:var(--ok-bg);color:var(--ok)}.voice.warn{background:var(--warn-bg);color:var(--warn)}.voice.bad{background:var(--bad-bg);color:var(--bad)}.child-at.ok{color:var(--ok)}.child-at.warn{color:var(--warn)}.check-table td.ok{color:var(--ok);font-weight:700}.check-table td.bad{color:var(--bad);font-weight:700}.meter{background:#eee6d6;border-radius:7px;height:14px;overflow:hidden}.meter div{background:var(--ok);height:100%;transition:width 80ms linear}.check-video{background:#000;border-radius:10px;width:160px;margin:12px 0;display:block}.check-video:not([src]):empty{min-height:0}@media (width<=480px){h1{font-size:1.4rem}.player-nav .muted{font-size:.85rem}}.call-steps{color:#23406e;margin:0;padding-left:1.3rem;font-size:1rem;font-weight:600}.call-steps li{margin:2px 0}.activity h2{margin-bottom:10px}.activity-slide{object-fit:contain;border:1px solid var(--line);background:#fff;border-radius:10px;width:100%;max-height:32vh;margin-bottom:10px}.capture{flex-direction:column;gap:8px;display:flex}.camera-view{object-fit:cover;background:#000;border-radius:12px;width:100%;max-height:55vh}.grow{flex:1}.draw-board{touch-action:none;border:1.5px solid var(--line);background:#fff;border-radius:10px;width:100%;display:block}.draw-tools{gap:8px}.pen{border:3px solid #0000;border-radius:50%;width:36px;height:36px;min-height:0;padding:0}.pen.on{border-color:var(--orange);box-shadow:inset 0 0 0 2px #fff}.work-list{margin-top:12px}.work-items{grid-template-columns:repeat(auto-fill,minmax(120px,1fr));gap:8px;display:grid}.work-items.tutor{grid-template-columns:repeat(auto-fill,minmax(180px,1fr))}.work-item{border:1px solid var(--line);background:#fff;border-radius:10px;flex-direction:column;gap:4px;padding:6px;display:flex}.work-item img{border-radius:6px;width:100%;display:block}.work-item audio{width:100%}.stage-work{flex-direction:column;gap:8px;margin-top:8px;display:flex}.prepost .gain strong{color:var(--muted)}.prepost .gain.up strong{color:var(--ok)}.offline-note{color:#23406e;background:#eaf1fb;border-radius:12px;padding:10px 12px}.share{border:2px solid var(--orange)}.share textarea{resize:vertical}.review-btns{gap:4px;display:flex}.review-btns button{flex:1;min-height:34px;padding:4px 6px;font-size:.85rem}.review-btns button.on.good{background:var(--ok-bg);border-color:var(--ok);color:var(--ok);font-weight:700}.review-btns button.on.practice{background:var(--warn-bg);color:var(--warn);border-color:#e0a92e;font-weight:700}.parent-report{text-align:left}.parent-report h1{font-size:2rem}.parent-report .celebrate{text-align:center}.score-card{text-align:center;flex-wrap:wrap;justify-content:space-around;align-items:center;gap:8px;display:flex}.score-card div{flex-direction:column;align-items:center;display:flex}.score-card strong{font-size:2.2rem;line-height:1.1}.score-card .arrow{color:var(--orange);font-size:1.8rem}.score-note{text-align:center;width:100%;color:var(--ok);margin:8px 0 0;font-weight:800}.stars{color:#f2a51a;letter-spacing:2px}.stars .dim{color:#e6dcc8}.message{font-size:1.1rem}.done-list{margin:4px 0;padding-left:1.2rem}.practice{background:var(--ok-bg);border-color:#b9e0c9}.policy h2{margin-top:1.4rem}.policy ul{padding-left:1.2rem}.policy li{margin:.3rem 0}.open-in-app{text-align:center;background:#eaf1fb;border:1.5px solid #b9cdea;border-radius:14px;flex-direction:column;gap:6px;margin-bottom:14px;padding:12px;display:flex}a.button{border-radius:12px;padding:14px 16px;font-weight:800;text-decoration:none;display:block}a.button.primary{background:var(--orange);color:#1b1206}