/* Printed legends and key cap geometry, based on CASIO's official front view. */
[hidden]{display:none!important}.key-slot{position:relative;display:grid;place-items:center;min-width:0}.key-slot .key{position:relative;margin:0}.key-legend{position:absolute;left:-1px;top:-15px;color:#8ed5f6;font:italic 12px/1.1 Cambria,"Times New Roman",serif;white-space:nowrap;pointer-events:none;z-index:2}.key-legend:after{content:"";position:absolute;left:2px;top:100%;height:7px;width:5px;border-left:1px solid #8ed5f6;border-bottom:1px solid #8ed5f6}.key-legend sup,.key-legend sub{font-size:8px;line-height:0}.key-legend .math-hole{width:4px;height:5px;border-width:1px}.key-slot:has([data-key=AC]) .key-legend{font:10px/1.2 "Microsoft YaHei",sans-serif;border-radius:5px;background:#87cfef;color:#17313d;padding:1px 4px;left:-3px;top:-18px}.key-slot:has([data-key=DEL]) .key-legend{font:10px/1.2 "Microsoft YaHei",sans-serif}.key-slot:has([data-key=format]) .key-legend{font-style:normal}.math-hole{display:inline-block;width:7px;height:9px;border:1.4px solid currentColor;border-radius:1px;vertical-align:baseline;font-style:normal;margin-left:1px}.key sup{font-size:12px;line-height:0;vertical-align:super}.key sup .math-hole{width:5px;height:6px}.log-key{font:16px/1.1 Arial,sans-serif;letter-spacing:-1px}.log-key sub{font-size:9px;vertical-align:sub}.log-key .math-hole{margin-left:1px;width:6px;height:9px}.fraction-icon{display:inline-flex;flex-direction:column;gap:2px;align-items:center;vertical-align:middle}.fraction-icon .math-hole{width:8px;height:5px;margin:0}.fraction-icon em{width:15px;border-top:1.5px solid}.root-bar{border-top:1px solid;padding-top:1px;margin-left:-2px}.format-key{display:block;font:11px/11px sans-serif;letter-spacing:0}.mini-fraction{font-size:9px}.derivative-label{font:italic 10px Cambria,serif}.navigation-pad{position:relative;isolation:isolate}.navigation-pad:before{content:"";position:absolute;z-index:-1;left:40%;top:6px;width:45%;height:126px;background:linear-gradient(135deg,#2d3031,#353839);clip-path:polygon(34% 0,65% 0,65% 33%,100% 33%,100% 66%,65% 66%,65% 100%,34% 100%,34% 66%,0 66%,0 33%,34% 33%);filter:drop-shadow(0 1px 2px #000)}.navigation-pad:after{content:"";position:absolute;right:1px;top:0;width:36px;height:88px;border-radius:20px;background:linear-gradient(100deg,#474b4d,#2c3032);border:1px solid #151a1c;box-shadow:0 2px 2px #0008;z-index:-1}.nav-slot{position:relative;display:grid;place-items:center;width:100%;height:100%}.navigation-pad .nav-slot button{grid-area:auto;background:radial-gradient(ellipse at 35% 20%,#515759,#353a3c 75%);box-shadow:0 2px 2px #000b,inset 0 1px 1px #ffffff20;border:1px solid #101719}.nav-slot .nav-legend{position:absolute;top:-9px;left:50%;transform:translateX(-50%);color:#d0d5d4;font:10px/1.1 "Microsoft YaHei",sans-serif;white-space:nowrap;pointer-events:none}.navigation-pad .nav-shift button{background:radial-gradient(ellipse at 35% 20%,#699fbe,#315d79 75%);color:#b8dcf0;box-shadow:0 2px 2px #000b,inset 0 1px 2px #b6dcf970}.nav-shift .nav-legend{color:#8ed5f6;font:11px/1 Arial,sans-serif}.navigation-pad svg{width:22px;height:22px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;display:block;margin:auto}.nav-shift svg{stroke-width:1.2;filter:drop-shadow(0 1px 0 #1f465b)}.navigation-pad .nav-pageup button,.navigation-pad .nav-pagedown button{border:0;background:none;box-shadow:none;border-radius:8px;min-height:35px}.navigation-pad .nav-on button{width:29px;min-height:29px;font-size:19px}.navigation-pad .nav-functions button{font:italic 16px Cambria,serif}.navigation-pad .nav-variables button{font:italic 17px Cambria,serif}.navigation-pad .nav-back button{font-size:25px}.navigation-pad .nav-up button,.navigation-pad .nav-down button{font-size:25px}.device-top strong{font-style:normal;font-family:Arial,sans-serif;font-weight:900;font-size:21px;letter-spacing:-.6px;color:#dfe3e3;text-shadow:0 1px #090d0f}.device-top .device-chinese{font:10px/1.2 sans-serif;margin-top:0}.device-sub{font:12px/1.2 monospace;letter-spacing:3px;justify-content:flex-end;margin-top:4px}.solar{background:linear-gradient(130deg,#3f2925,#291d1a);border:1px solid #111517;box-shadow:inset 0 1px 3px #1009;height:58px;width:47%;border-radius:13px}.calculator{box-shadow:inset 0 0 0 2px #414647,inset 0 0 0 5px #151a1b,0 8px 18px #142b3d20}.screen{box-shadow:0 0 0 5px #202628,inset 0 1px 4px #162b3130}.key:active{transform:translateY(2px)!important}.navigation-pad button:active{transform:translateY(1px)!important}.key:active~small{transform:none}.science-keypad .key-slot{height:41px}.keypad .key-slot{height:56px}.science-keypad{gap:19px 7px}.keypad{gap:18px 9px}
/* Chapters */
#lesson-nav{display:block;overflow:visible}.chapter{border-bottom:1px solid #d7e2e6;padding:5px 0}.chapter summary{display:flex;align-items:center;gap:8px;cursor:pointer;list-style:none;padding:13px 0;font-size:13px;font-weight:600}.chapter summary::-webkit-details-marker{display:none}.chapter summary>span:nth-child(2){flex:1}.chapter summary small{display:block;font-size:10px;color:#66808a;font-weight:400;margin-top:5px}.chapter-number{color:#6d939b;font:12px monospace}.chapter-lessons{padding:0 0 10px 13px}.chapter .lesson-link{white-space:normal;font-size:12px;line-height:1.5;display:flex;justify-content:space-between}.chapter-game{background:#e6f3ee;color:#236655;border-radius:6px;padding:11px 8px;font-size:11px;width:100%;text-align:left;line-height:1.6}.chapter-game:disabled{background:#eff2f3;color:#87979b;cursor:default}.chapter-game small{display:block}.question-actions{display:flex;gap:8px;flex-wrap:wrap;margin-top:14px}.written-hint{font-size:12px;margin-top:13px;color:#667f86}.written-hint summary{cursor:pointer}.written-hint p{margin-top:7px;font-size:13px}.chapter .lesson-link.active{color:#087b75;background:#e4f2f0}
/* Pinned operation surface */
.training-open{overflow:hidden}#training{position:fixed;inset:0;z-index:80;background:#eef3f2;color:#173a40;display:flex;flex-direction:column;overflow:hidden}.training-top{height:58px;flex-shrink:0;border-bottom:1px solid #d8e3e2;display:flex;align-items:center;justify-content:space-between;padding:0 28px;background:#fff}.training-brand{font-weight:700;font-size:15px}.training-brand small{font-size:12px;color:#668588;margin-left:15px;font-weight:400}.training-layout{display:grid;grid-template-columns:minmax(320px,430px) minmax(340px,580px);justify-content:center;gap:36px;flex:1;min-height:0;padding:22px 30px}.panel-dock{min-height:0;display:flex;flex-direction:column;align-items:center;justify-content:center;position:relative}.dock-caption{font-size:10px;color:#7e9294;margin-top:10px;text-align:center}#device-fit{position:relative;flex-shrink:0}#device-host{transform-origin:top left;width:366px}.training-device{width:366px!important;max-width:none!important;margin:0!important;padding:18px!important}.training-device .device-top{height:59px}.training-device .device-sub{margin:4px 0 9px}.training-device .screen{height:166px;min-height:166px;padding:8px 10px;overflow:hidden}.training-device .screen>:not(#panel-training-screen){display:none!important}.training-device .navigation-pad{grid-template-rows:38px 38px 38px;gap:7px;margin:23px 0 18px}.training-device .navigation-pad:before{height:125px}.training-device .navigation-pad:after{height:79px}.training-device .navigation-pad button{width:37px;min-height:34px}.training-device .nav-on button{width:29px;min-height:29px}.training-device .science-keypad{gap:19px 7px;margin:18px 0}.training-device .science-keypad .key{min-height:39px;width:39px}.training-device .science-keypad .key-slot{height:39px}.training-device .keypad{gap:17px 9px;margin-top:20px}.training-device .keypad .key-slot{height:49px}.training-device .keypad .key{width:49px;height:49px;min-height:49px}.training-coach{overflow-y:auto;min-height:0;align-self:stretch;padding:26px 5px 28px;scrollbar-width:thin}.session-eyebrow{font-size:11px;color:#6b8989;letter-spacing:1px;margin-bottom:16px}.training-coach h2{font-size:27px;line-height:1.4;margin:0 0 12px;letter-spacing:-.4px}#training-prompt{font-size:15px;line-height:1.9;color:#476c70;margin-bottom:23px;overflow-wrap:anywhere}.live-guide{background:#fff;border:1px solid #cfdfda;border-radius:14px;padding:21px;box-shadow:0 4px 10px #173d4010}.guide-progress{display:flex;justify-content:space-between;gap:14px;font-size:11px;color:#688984}#guidance-progress{width:100%;height:3px;margin:12px 0 6px}#next-action{display:flex;gap:18px;align-items:center;min-height:65px;font-size:19px}.next-key{min-width:57px;height:52px;border-radius:12px;display:grid;place-items:center;font-size:22px;font-weight:700;color:#f4fffa;background:#254840;box-shadow:0 4px #162f2a;padding:0 10px}#action-context{font-size:12px;line-height:1.8;color:#66817d;margin:10px 0 0}.training-actions{display:flex;gap:10px;flex-wrap:wrap;margin:18px 0}.training-actions button{font-size:13px}#training-feedback{font-size:14px;line-height:1.8;margin-top:18px;color:#42626a}#training-feedback:empty{display:none}#training-feedback.success{color:#08725c}#training-feedback.wrong{color:#a15137}.operation-note{font-size:12px;color:#728c8b;line-height:1.9;margin:20px 0}.operation-note summary{cursor:pointer}.operation-note p{margin:10px 0}.done-icon{color:#23865f;font-size:33px}#achievement{display:flex;align-items:flex-start;gap:17px;background:#fff8df;border:1px solid #dfcb91;border-radius:12px;padding:20px;margin-top:20px}#achievement strong{display:block;font-size:22px;margin:4px 0}#achievement small{font-size:11px;color:#978142}#achievement p{font-size:13px;line-height:1.7;margin-bottom:12px}.medal{font-size:45px;color:#b88b28}.panel-status{display:flex;justify-content:space-between;font:11px/1.2 sans-serif;border-bottom:1px solid #739b8133;padding-bottom:5px}.panel-status b{font-weight:600}.panel-field-name{font-size:11px;margin:6px 0;color:#294d41}.panel-content{height:75px;overflow:hidden;font:14px/1.7 Consolas,"Microsoft YaHei",monospace;color:#152f24}.screen-menu-item{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;padding:0 4px;line-height:24px}.screen-menu-item.selected{background:#b2cbbb;border-radius:2px;font-weight:600}.panel-entry{font-size:20px;line-height:1.4;padding-top:8px;overflow-wrap:anywhere;word-break:break-all;max-height:74px;overflow:auto}.entry-cursor{color:#1e6042;font-weight:900}.panel-foot{font-size:10px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;border-top:1px solid #75988333;padding-top:4px;margin-top:4px}.screen-ready{padding:10px 0}.screen-result-line{font-size:13px;white-space:nowrap;overflow-x:auto}.training-device [data-key]{transition:filter .15s}.training-device [data-key].key-blocked{cursor:not-allowed;filter:brightness(.85)}.training-device [data-key].key-next{z-index:4;outline:2px solid #d6ffba;outline-offset:3px;animation:fresnel 1.65s ease-in-out infinite;filter:brightness(1.22)}.training-device .key-next:after{content:"";position:absolute;inset:-9px;border-radius:50%;border:1px solid #cfff9399;pointer-events:none;box-shadow:0 0 0 3px #b5f89318,0 0 0 6px #b5f89312}.training-device .key-next:before{content:"";position:absolute;inset:-5px;border-radius:50%;border:1px solid #ecffd7;pointer-events:none}@keyframes fresnel{0%,100%{box-shadow:0 0 9px 3px #b5f89377,0 0 22px #b5f89344}50%{box-shadow:0 0 14px 5px #d9ffaca0,0 0 30px #b5f89370}}
/* Tiny pixel arena lives inside the original logo / solar-panel space. */
.battle-device .device-top,.battle-device .device-sub{display:none}.battle-device #battle-screen{margin:1px 0 12px}.pixel-sky{height:80px;position:relative;background:repeating-linear-gradient(0deg,transparent 0 3px,#14283033 3px 4px),linear-gradient(#17283d,#264d52);border:2px solid #121d26;border-radius:7px;overflow:hidden;color:#cfe4b0;font-family:monospace;image-rendering:pixelated}.pixel-label{position:absolute;top:5px;left:8px;font-size:9px;letter-spacing:2px;color:#9dbba9}.pixel-hud{position:absolute;left:8px;right:8px;top:19px;display:flex;justify-content:space-between;font-size:10px}.pixel-ground{position:absolute;bottom:0;height:7px;background:repeating-linear-gradient(90deg,#698763 0 12px,#4a705e 12px 24px);border-top:3px solid #92a47b;width:100%}.pixel-hero{position:absolute;width:5px;height:5px;left:30px;bottom:29px;background:#f3e3af;box-shadow:5px 0 #f3e3af,0 5px #f3e3af,5px 5px #3f564a,-5px 5px #e1d4a1,-5px 10px #74ba98,0 10px #74ba98,5px 10px #74ba98,10px 10px #f3e3af,0 15px #487893,5px 15px #487893,-5px 20px #e5d9b7,10px 20px #e5d9b7}.pixel-boss{position:absolute;right:45px;bottom:33px;width:7px;height:7px;background:#ce8b87;box-shadow:-7px -7px #aa6b80,14px -7px #aa6b80,7px 0 #ce8b87,-7px 7px #ae7290,0 7px #ffce89,7px 7px #ae7290,14px 7px #ffce89,21px 7px #ae7290,-7px 14px #ae7290,0 14px #ae7290,7px 14px #ae7290,14px 14px #ae7290,21px 14px #ae7290,0 21px #664d77,7px 21px #664d77,14px 21px #664d77,-7px 28px #be8391,21px 28px #be8391}.pixel-strike{position:absolute;left:61px;bottom:16px;font-size:28px;color:#f2dc97;opacity:0}#combo-label{position:absolute;left:85px;bottom:17px;font-size:12px;font-weight:700;letter-spacing:1px;color:#e5da9e}.boss-health{height:4px;background:#402d37;margin:3px 2px 0}.boss-health span{display:block;height:100%;background:#ae8192;transition:width .2s}.strike .pixel-hero{animation:hero-hit .2s steps(2)}.strike .pixel-strike{animation:shot .3s steps(4)}.hurt .pixel-sky{animation:damage .45s steps(2)}.won .pixel-boss{opacity:.15;transform:translateY(20px);transition:.3s}.won .pixel-sky{background:#244d48}.paused .pixel-hero,.paused .pixel-boss{animation-play-state:paused}#battle-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;margin-bottom:20px;font-size:11px;color:#617e79}#battle-stats span{background:#e0eae5;border-radius:6px;padding:10px}#battle-stats b{display:block;color:#294d43;font:17px/1.5 monospace}#battle-stats small{grid-column:1/-1;font-size:11px;line-height:1.7}@keyframes hero-hit{50%{transform:translateX(7px)}}@keyframes shot{0%{opacity:1;transform:translateX(0)}100%{opacity:0;transform:translateX(180px)}}@keyframes damage{50%{filter:sepia(1) saturate(3);transform:translateX(3px)}}
@media(max-width:1030px){.curriculum #lesson-nav{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:6px}.chapter{border:1px solid #dce5e5;border-radius:8px;padding:0 10px;align-self:start}.chapter summary{font-size:12px}.training-layout{gap:20px;padding:14px 18px;grid-template-columns:minmax(300px,380px) minmax(280px,1fr)}.training-coach{padding-top:12px}}
@media(max-width:760px){.curriculum #lesson-nav{grid-template-columns:1fr 1fr}.chapter .lesson-link{background:none;padding:8px 2px;font-size:11px}.chapter-number{display:none}.chapter summary{font-size:11px}.chapter-lessons{padding-left:0}.science-keypad .key-slot{height:42px}.keypad .key-slot{height:55px}.nav-slot .nav-legend{top:-8px}.navigation-pad:after{height:98px}.navigation-pad:before{height:140px}.training-top{height:42px;padding:0 13px}.training-brand{font-size:12px}.training-brand small{font-size:10px;margin-left:8px}.training-top button{font-size:11px;padding:7px 10px;min-height:32px}.training-layout{display:flex;flex-direction:column-reverse;gap:6px;padding:7px 10px max(5px,env(safe-area-inset-bottom));min-height:0}.panel-dock{flex:1;min-height:0}.training-coach{max-height:25dvh;flex-shrink:0;padding:2px 2px 4px;overflow-y:auto;display:block}.session-eyebrow,.operation-note,.dock-caption{display:none}.training-coach h2{font-size:15px;margin:0 0 4px}#training-prompt{font-size:12px;line-height:1.5;margin-bottom:7px}.live-guide{padding:8px 11px;border-radius:8px;display:grid;grid-template-columns:1fr auto;gap:3px 9px}.guide-progress{font-size:10px;grid-column:1/-1}#guidance-progress{margin:2px 0;width:100%;grid-column:1/-1}#next-action{min-height:30px;font-size:13px;gap:10px}.next-key{height:28px;min-width:34px;font-size:14px;border-radius:6px;padding:0 7px;box-shadow:0 2px #162f2a}#action-context{font-size:10px;line-height:1.5;margin:0;max-width:150px}.training-actions{margin:7px 0 0;gap:6px}.training-actions button{min-height:32px;padding:6px 11px;font-size:11px}#training-feedback{margin-top:7px;font-size:11px;line-height:1.5}#battle-stats{display:flex;flex-wrap:wrap;margin:4px 0 7px;gap:5px;font-size:10px}#battle-stats span{padding:3px 6px}#battle-stats b{display:inline;font-size:11px;margin-left:4px}#battle-stats small{font-size:10px;line-height:1.4}#achievement{padding:10px;gap:10px;margin-top:8px}#achievement strong{font-size:17px}#achievement p{font-size:11px}.medal{font-size:28px}#device-fit{margin:auto 0}}
@media(max-width:760px) and (orientation:landscape){.training-layout{display:grid;grid-template-columns:43% 1fr;padding:6px 12px;gap:15px}.training-coach{max-height:none;overflow-y:auto;align-self:stretch}.training-top{height:34px}.panel-dock{height:100%}#action-context{max-width:none}}
@media(prefers-reduced-motion:reduce){.training-device [data-key].key-next,.strike .pixel-hero,.strike .pixel-strike,.hurt .pixel-sky{animation:none!important}.training-device [data-key].key-next{box-shadow:0 0 14px 4px #cfff93a0}.boss-health span{transition:none}}

/* Keep backplate geometry off the movable caps. */
.navigation-pad .nav-slot{background:transparent;border:0;box-shadow:none;border-radius:0;color:inherit}.navigation-pad:before{display:none}.navigation-pad .direction-bridge{position:absolute;left:40%;top:1px;width:45%;height:calc(100% - 4px);z-index:-1;fill:#303638;stroke:#1d2425;stroke-width:1;pointer-events:none}.navigation-pad .direction-bridge path{fill:#303638}.device-sub{flex-direction:row}.science-keypad .key{padding:0;white-space:nowrap;overflow:visible}.key>span{white-space:nowrap}.key .log-key{display:inline-block;white-space:nowrap;font:14px/1 Arial,sans-serif;letter-spacing:-.8px}.key .log-key .math-hole{width:5px;height:7px}.science-keypad .key-slot:has([data-key=x]) .key{font:italic 23px Georgia,serif}.key-slot .key-legend{transform:none}.navigation-pad .nav-slot:has(.pressed) .nav-legend{color:#bceaff}

.key-legend{font-family:Arial,"Microsoft YaHei",sans-serif;font-style:normal;font-size:11px;font-weight:400}.key-slot:has([data-key=negative]) .key-legend,.key-slot:has([data-key="7"]) .key-legend,.key-slot:has([data-key="9"]) .key-legend,.key-slot:has([data-key="0"]) .key-legend,.key-slot:has([data-key="."]) .key-legend,.key-slot:has([data-key=e]) .key-legend{font-family:Cambria,serif;font-style:italic;font-size:12px}.nav-slot .nav-legend{font-weight:400}

@media(max-width:760px) and (orientation:portrait){#training.is-battle[data-guided=false] .live-guide{display:none}#training.is-battle #battle-stats small{display:none}#training.is-battle #training-feedback{margin-top:6px;font-size:11px}#training.is-battle .training-actions{position:sticky;bottom:0;background:#eef3f2;padding:4px 0;margin-top:5px}#training.is-battle .training-coach{max-height:25dvh}#training.is-battle #battle-stats{margin-bottom:4px}}

/* One physical face in every viewport: 366 × 824. Only uniform scale changes. */
.training-device{height:824px!important;min-height:824px!important;max-height:824px!important;box-sizing:border-box}.training-device .device-masthead{height:86px;position:relative;display:flow-root}.training-device .device-top{height:59px}.training-device .device-sub{height:14px;line-height:14px;margin:4px 0 9px}.training-device #battle-screen{position:absolute;inset:0 0 7px;margin:0}.training-device #battle-screen .pixel-sky{height:72px}.training-device #battle-screen .boss-health{margin-top:3px;height:4px}.training-device .screen{margin-top:0}.training-device .science-keypad .key-slot{height:39px}.training-device .keypad .key-slot{height:49px}.training-device .nav-slot .nav-legend{top:-9px}
.training-top{height:36px;padding:0 20px}.training-top button{min-height:28px;padding:5px 10px;font-size:12px}.training-layout{padding:10px 20px;grid-template-columns:minmax(0,44dvh) minmax(280px,560px);gap:28px}.panel-dock{min-height:70dvh;justify-content:center}.dock-caption{display:none}.training-coach{padding:10px 0;max-height:none}.session-eyebrow{margin-bottom:7px}.training-coach h2{font-size:23px;margin-bottom:7px}#training-prompt{margin-bottom:5px;font-size:14px;line-height:1.65}#brief-read{font-size:11px;padding:4px 0;margin-bottom:12px}.brief-folded #task-brief{display:none}#task-brief{position:relative}#drawer-close{display:none}.training-rail{position:fixed;right:10px;top:44px;display:flex;gap:6px;z-index:5}.training-rail button{background:#fff;color:#356760;border:1px solid #cbddd7;border-radius:10px;box-shadow:0 2px 6px #153c3c12;font-size:12px;min-width:42px;min-height:38px;padding:6px}.training-rail button:not(#brief-toggle){display:none}.brief-popup #task-brief{display:block;position:fixed;z-index:7;top:46px;right:64px;width:min(450px,calc(100vw - 86px));max-height:50dvh;overflow:auto;padding:17px 18px;background:#fff;border:1px solid #c6d9d2;border-radius:12px;box-shadow:0 8px 28px #173c4025}.brief-popup #task-brief #brief-read{margin:5px 0 0}.brief-popup #task-brief h2{display:block}#next-action{min-height:49px;font-size:17px}.live-guide{padding:15px}.next-key{height:40px;min-width:45px;font-size:19px}#training-feedback{margin-top:10px;font-size:13px}.training-actions{margin-top:12px}.operation-note{margin:12px 0}
@media(max-width:1030px) and (min-width:761px){.training-layout{grid-template-columns:minmax(0,1fr) minmax(250px,1fr);gap:20px;padding:8px 16px}}
@media(max-width:760px){
 .training-top{height:32px;padding:0 10px}.training-brand{font-size:11px}.training-brand small{font-size:10px}.training-top button{min-height:25px;font-size:10px;padding:4px 7px}.training-layout{padding:4px 8px;gap:3px}.panel-dock{min-height:70dvh;margin-right:46px;width:calc(100% - 46px)}.training-coach,#training.is-battle .training-coach{max-height:calc(26dvh - 32px);padding:0;overflow-y:auto;flex-shrink:0}.training-coach h2,.session-eyebrow{display:none}#training-prompt{font-size:12px;line-height:1.5;margin:0}#brief-read{font-size:10px;padding:2px 0;margin:0 0 4px;min-height:23px}.live-guide{padding:5px 8px;border-radius:7px;grid-template-columns:1fr auto;gap:0 8px;position:sticky;bottom:0;z-index:1}.guide-progress{font-size:9px;grid-column:2;grid-row:1;align-items:center}#guidance-mode{display:none}#guidance-progress{display:none}#next-action{min-height:27px;font-size:12px;gap:9px;grid-row:1;grid-column:1}.next-key{min-width:29px;height:25px;font-size:13px;padding:0 5px;border-radius:5px;box-shadow:none}#action-context{display:none}#training-feedback,#training.is-battle #training-feedback{font-size:11px;line-height:1.5;margin:4px 0 0}.training-rail{top:44%;right:7px;flex-direction:column;gap:8px;width:42px}.training-rail button,.training-rail button:not(#brief-toggle){display:block;width:42px;min-height:40px;font-size:11px;padding:5px 2px}.training-rail #rail-follow,.training-rail #rail-pause{background:#176b61;color:#fff;border-color:#176b61}#operation-drawer{display:none;position:fixed;z-index:6;right:58px;top:40px;width:min(280px,calc(100vw - 75px));max-height:65dvh;overflow:auto;background:#fff;border:1px solid #bfd6cd;box-shadow:0 8px 28px #163e4025;border-radius:12px;padding:12px}.tools-open #operation-drawer{display:block}#operation-drawer #drawer-close{display:block;margin-left:auto;font-size:11px}#operation-drawer .training-actions,#training.is-battle #operation-drawer .training-actions{position:static;display:flex;flex-direction:column;gap:8px;padding:0;margin:8px 0;background:none}#operation-drawer .training-actions button{min-height:37px;font-size:12px;padding:8px}#operation-drawer .operation-note{display:block;font-size:11px;margin:10px 0}.brief-popup #task-brief{top:38px;right:58px;width:calc(100vw - 74px);padding:12px;max-height:55dvh}.brief-popup #task-brief h2{font-size:15px}.brief-popup #task-brief #training-prompt{font-size:13px;line-height:1.7}.brief-folded #battle-stats{display:none}#battle-stats{margin:4px 0!important;gap:4px}#battle-stats span{padding:2px 5px}#battle-stats small{display:none}#achievement{position:fixed;bottom:16px;right:60px;width:min(300px,calc(100vw - 80px));max-height:50dvh;overflow:auto;z-index:6;margin:0;box-shadow:0 6px 26px #173c4033}
}
@media(max-width:760px) and (orientation:landscape){.training-layout{grid-template-columns:43% 1fr;padding:3px 54px 3px 8px;gap:14px}.panel-dock{margin-right:0;width:100%;height:100%}.training-coach,#training.is-battle .training-coach{max-height:none;height:100%}.training-rail{top:40px;gap:5px}.training-rail button{min-height:34px}.live-guide{position:static}.training-coach h2{display:block;font-size:15px}}
/* Free calculation uses the same intrinsic face as guided operation. */
.free-device-fit{position:relative;margin:0 auto;flex-shrink:0}.free-device-host{width:366px;transform-origin:top left}.calculator{width:366px!important;height:824px!important;min-height:824px!important;max-height:824px!important;max-width:none!important;box-sizing:border-box;padding:18px!important;margin:0!important}.calculator .device-masthead{height:86px;position:relative;display:flow-root}.calculator .device-top{height:59px}.calculator .device-sub{height:14px;line-height:14px;margin:4px 0 9px}.calculator .screen{height:166px;min-height:166px;max-height:166px;margin-top:0;padding:8px 10px;overflow:hidden}.calculator .navigation-pad{grid-template-rows:38px 38px 38px;gap:7px;margin:23px 0 18px}.calculator .navigation-pad button{width:37px;min-height:34px}.calculator .navigation-pad .nav-on button{width:29px;min-height:29px}.calculator .navigation-pad:after{height:79px}.calculator .nav-slot .nav-legend{top:-9px}.calculator .science-keypad{gap:19px 7px;margin:18px 0}.calculator .science-keypad .key-slot{height:39px}.calculator .science-keypad .key{min-height:39px;height:39px;width:39px;font-size:16px}.calculator .keypad{gap:17px 9px;margin-top:20px}.calculator .keypad .key-slot{height:49px}.calculator .keypad .key{width:49px;height:49px;min-height:49px}
/* Completion always offers an immediate way back, including compact phones. */
#completion-actions{background:#fff;border:1px solid #b9d8ca;border-radius:12px;padding:15px;margin:12px 0;position:sticky;top:0;z-index:3;box-shadow:0 3px 12px #173c4012}#completion-summary{font-size:14px;color:#176b51;margin:0 0 10px}#completion-actions>div{display:flex;gap:8px;flex-wrap:wrap}#completion-actions button{min-height:42px;font-size:13px}#training.is-complete #task-brief,#training.is-complete .live-guide,#training.is-complete #battle-stats{display:none}#training.is-complete .training-rail #rail-follow{display:none}#training.is-complete.brief-popup #task-brief{display:block}#training.is-complete #achievement{position:static;width:auto;max-height:none;margin-top:12px}#training.is-complete #training-feedback{margin-top:7px}
@media(max-width:760px){#completion-actions{padding:7px 8px;margin:0;border-radius:8px}#completion-summary{font-size:11px;margin-bottom:5px}#completion-actions>div{flex-wrap:nowrap;gap:5px}#completion-actions button{min-height:36px;padding:6px 9px;font-size:11px;white-space:nowrap}#training.is-complete .training-coach{max-height:calc(26dvh - 32px)}#training.is-complete #training-feedback{font-size:11px}#training.is-complete #achievement{padding:10px}}
.lesson-completion{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;margin:18px 0;padding:16px;background:#e6f3ee;border:1px solid #c1dcd0;border-radius:10px}.lesson-completion strong{font-size:13px;color:#176b51}.lesson-completion button{font-size:12px;min-height:40px}
@media(max-width:760px){#training-feedback.wrong{position:sticky;bottom:0;z-index:2;background:#fff3e8;border:1px solid #edc8ac;border-radius:7px;padding:6px 8px}}
.chapter-complete>summary{color:#176b51}.chapter .lesson-link .check,.lesson-progress{flex-shrink:0;font-size:10px;margin-left:7px;white-space:nowrap}.chapter .lesson-link .check{color:#167253;background:#dff1e7;border-radius:5px;padding:1px 5px}.lesson-progress{color:#7b9195}.question.solved{border-color:#a9cbbb}.question.solved .question-label{color:#176b51}