*{box-sizing:border-box}[hidden]{display:none!important}:root{font:16px/1.6 "Microsoft YaHei","PingFang SC",sans-serif;color:#1c3d32;background:#e9eddf}body{margin:0}button,textarea{font:inherit}button{cursor:pointer}button:focus-visible,textarea:focus-visible,summary:focus-visible{outline:3px solid #e8a83f;outline-offset:4px}button:disabled{cursor:default}.topbar{background:#173f32;color:#fff;display:flex;align-items:center;justify-content:space-between;padding:13px max(3vw,20px);gap:15px}.brand{display:flex;align-items:center;gap:12px;font-size:19px;font-weight:700}.brand small{display:block;font-size:12px;letter-spacing:2px;color:#c6d5bd;font-weight:400}.logo{background:white;width:49px;height:43px;overflow:hidden;border-radius:5px;position:relative;flex:none}.logo img{position:absolute;width:112px;max-width:none;left:-30px;top:-31px}.topnote{font-size:13px;color:#d2dbc6}.shell{max-width:1390px;margin:auto;padding:19px 28px 25px}.heading{display:flex;justify-content:space-between;align-items:center;gap:20px;margin-bottom:15px}.heading h1{font-family:KaiTi,"楷体",serif;font-weight:500;letter-spacing:3px;font-size:36px;margin:0}.heading p{margin:0;color:#718069;font-size:13px}.stamps{display:flex;gap:12px}.stamp{border:1px solid #bcc6ac;color:#77836c;padding:7px 12px;border-radius:3px;font-size:14px;background:#f3f5eb}.stamp.current{border-color:#ad7440;color:#8b542d;background:#fff8e8}.stamp.earned{border:2px solid #a15b37;color:#a15b37;background:#fff9e8;transform:rotate(-3deg)}.game-layout{display:grid;grid-template-columns:minmax(0,1fr) 305px;gap:20px;align-items:start}.world-shell{min-width:0;background:#fffdf6;border:1px solid #bdc9aa;box-shadow:0 10px 24px #2b4a2920;border-radius:8px;overflow:hidden}.scene{position:relative;isolation:isolate;width:100%;height:clamp(340px,33vw,465px);overflow:hidden;background:#cbdabd}.background{position:absolute;inset:0;background:url('assets/village.png') center 60%/cover no-repeat;transition:filter 1s}.scene.rain .background{filter:brightness(.83) saturate(.8)}.scene.river .background{background-position:right 65%}.scene::after{content:'';position:absolute;inset:0;box-shadow:inset 0 -60px 60px -50px #294f35;pointer-events:none}.scene-tag{position:absolute;top:17px;left:20px;padding:6px 15px;background:#fffcf0ed;color:#375439;border:1px solid #9ba77a;border-radius:4px;font-size:14px;z-index:5}.scene-tag strong{margin-right:9px;color:#a56a32}.weather{position:absolute;inset:0;background:repeating-linear-gradient(110deg,transparent 0,transparent 43px,#d7e7e778 44px,transparent 46px,transparent 82px);opacity:0;pointer-events:none;z-index:4}.rain .weather{opacity:.35;animation:rainfall .65s linear infinite}@keyframes rainfall{to{background-position:-15px 80px}}.actor{position:absolute;background-image:url('assets/actors.png');background-size:300% 200%;background-repeat:no-repeat;width:158px;height:205px;z-index:3;border:none;background-color:transparent;transition:left .85s ease,bottom .8s ease,transform .3s}.yang{background-position:0 0;left:39%;bottom:8%}.yang.dark{background-position:50% 0}.yang.startled{background-position:100% 0}.yang.travel{left:70%}.dog{background-position:0 100%;width:130px;height:151px;left:16%;bottom:8%}.dog.barking{background-position:50% 100%;animation:bark .55s ease-in-out 3}.turtle{background-position:100% 100%;width:104px;height:115px;left:34%;bottom:8%;cursor:grab;touch-action:manipulation}.turtle.selected{filter:drop-shadow(0 0 7px #ffdb58);transform:translateY(-8px)}.turtle.released{left:77%;bottom:12%;transform:scale(.7);pointer-events:none}.turtle.look-back{transform:scale(-.7,.7)}@keyframes bark{50%{transform:translateY(-7px)}}.speech{position:absolute;left:7%;top:37%;max-width:200px;background:#fffdf3;border:2px solid #968568;border-radius:17px;padding:12px 17px;color:#735435;font-family:KaiTi,"楷体",serif;font-size:24px;z-index:6;box-shadow:2px 3px 0 #78693b25}.speech::after{content:'';position:absolute;bottom:-9px;left:37px;width:14px;height:14px;background:#fffdf3;border-right:2px solid #968568;border-bottom:2px solid #968568;transform:rotate(45deg)}.water-target{position:absolute;right:4%;bottom:9%;width:25%;height:26%;border:2px dashed #faffeb;border-radius:50%;background:#165c7336;color:white;font-weight:700;text-shadow:0 1px 4px #163b38;z-index:4;display:grid;place-items:center;box-shadow:0 0 0 3px #31758b54}.water-target:hover{background:#16607270}.scene-caption{position:absolute;bottom:10px;left:18px;font-size:12px;color:#203e30;background:#ffffffe0;border-radius:3px;padding:3px 9px;z-index:6}.dock{padding:21px 24px 23px;min-height:218px}.dock-top{display:flex;align-items:flex-start;gap:12px}.guide{width:55px;height:60px;flex:none;background:url('assets/mascot.png') left center/165px 55px no-repeat}.dock h2{font-size:21px;line-height:1.6;margin:0 0 4px}.instruction{font-size:15px;color:#707c62;margin:0}.quote{font-family:KaiTi,"楷体",serif;color:#6c774f;font-size:19px;background:#f2f2e4;border-left:3px solid #a7b677;padding:8px 14px;margin:13px 0}.controls{display:flex;gap:12px;flex-wrap:wrap;margin-top:16px}.outfit{display:flex;gap:12px;align-items:center;min-width:132px;border:1px solid #c0c8ac;background:white;border-radius:6px;padding:10px 17px;color:#3c5038}.swatch{width:27px;height:31px;border-radius:3px;border:1px solid #bfc5ae;background:#fffdf4;box-shadow:2px 2px 0 #dce0cc}.swatch.black{background:#303c37}.outfit.chosen{background:#f0f5df;border:2px solid #6d9147}.primary{background:#24583f;border:0;border-radius:5px;color:#fff;padding:11px 22px;font-weight:600;box-shadow:0 3px 0 #153d2b}.primary:hover{background:#376b46}.secondary{background:none;border:1px solid #bbc6ab;color:#5b6d4d;padding:9px 16px;border-radius:5px}.feedback{margin:13px 0 0;color:#985c2e;font-size:15px;line-height:1.8;min-height:0}.feedback.success{color:#3f6e2d}.book{background:#fffdf3;border:1px solid #c9c7ac;box-shadow:4px 4px 0 #bac7a647;padding:22px 23px;border-top:5px solid #8a9a68;border-radius:3px}.book-top{display:flex;justify-content:space-between;font-size:12px;color:#7b8069}.book h2{font-family:KaiTi,"楷体",serif;font-size:28px;font-weight:500;text-align:center;letter-spacing:3px;margin:17px 0}.passage{font-family:KaiTi,"楷体",serif;font-size:20px;line-height:2.05}.passage mark{background:#f7df96;color:#203f31}.passage button{font:inherit;color:inherit;border:0;border-bottom:1px dashed #829457;background:none;text-align:left;display:inline;padding:0}.passage button:hover{background:#ffecb1}.source{font-size:12px;color:#82856d;text-align:right;margin:13px 0}details{margin-top:16px;border-top:1px dashed #cccdb9;padding-top:13px;font-size:14px;line-height:1.9}summary{cursor:pointer;color:#536849}details p{margin-bottom:0}.evidence{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:17px 0}.slot{border:2px dashed #bac3a7;border-radius:6px;min-height:82px;padding:10px;background:#f8f8ef;color:#879178;text-align:left}.slot small{display:block;font-size:12px;color:#7f886e;margin-bottom:4px}.slot.filled{background:#eaf2da;border-style:solid;border-color:#7b984f;color:#375433}.chips{display:flex;flex-wrap:wrap;gap:9px}.chip{border:1px solid #bcc8a6;padding:10px 13px;border-radius:4px;background:#fffef8;color:#4e623e;font-family:KaiTi,"楷体",serif;font-size:18px;cursor:grab}.chip.selected{border-color:#bf8534;background:#fff1c7;box-shadow:0 0 0 2px #edce90}.chip:disabled{opacity:.45}.evidence-help{font-size:12px;color:#7e866e;margin-top:9px}.complete{background:#fffdf1;border:1px solid #b9c7a5;padding:35px clamp(20px,7vw,95px);text-align:center;border-radius:6px}.complete h2{font-family:KaiTi,"楷体",serif;font-size:35px;font-weight:500}.earned-row{display:flex;justify-content:center;gap:18px;margin:20px 0}.big-seal{font-family:KaiTi,"楷体",serif;border:2px solid #a2633d;color:#a2633d;font-size:22px;padding:14px;transform:rotate(-4deg)}.reflection{text-align:left;margin:28px 0;background:#f0f2e4;padding:22px}.reflection h3{font-size:18px}.reflection p{line-height:1.8}textarea{display:block;width:100%;resize:vertical;border:1px solid #b7c4a1;border-radius:3px;padding:13px;font-size:16px;color:#254a35;background:#fffef8;line-height:1.8}.privacy{font-size:12px;color:#7a856d}footer{display:flex;justify-content:space-between;gap:20px;margin:20px 0 0;font-size:12px;color:#75816a}footer button{border:none;background:none;color:#60744b;font-size:13px}.toast{position:fixed;top:20px;left:50%;transform:translateX(-50%);z-index:50;padding:12px 24px;background:#204c39;color:white;border:1px solid #bad190;border-radius:6px;box-shadow:0 10px 40px #12332840;pointer-events:none}@media(max-width:980px){.game-layout{grid-template-columns:minmax(0,1fr) 270px}.shell{padding:16px}.scene{height:350px}.actor{width:135px;height:176px}.dog{width:110px;height:129px}.turtle{width:90px;height:100px}.dock{padding:18px}.book{padding:19px}.passage{font-size:19px}.stamps{gap:6px}.stamp{padding:6px 8px;font-size:13px}.heading h1{font-size:30px}}@media(max-width:720px){.topbar{padding:10px 16px}.topnote{font-size:12px}.brand{font-size:17px}.heading{display:block}.heading h1{font-size:32px}.stamps{margin-top:12px}.stamp{flex:1;text-align:center}.game-layout{display:flex;flex-direction:column}.world-shell,.book{width:100%}.scene{height:340px}.book{order:2}.dock h2{font-size:20px}.guide{width:42px;height:48px;background-size:126px 42px}.book h2{font-size:25px}.passage{font-size:20px}.controls{gap:8px}.outfit{min-width:110px;padding:9px 13px}.primary{padding:10px 17px}.speech{font-size:22px;left:4%;top:32%;max-width:150px}.yang{left:43%}.dog{left:15%}.scene-tag{font-size:13px;left:12px}.evidence{gap:8px}.slot{font-size:14px}.earned-row{gap:8px}.big-seal{font-size:18px;padding:10px}footer{display:block}footer button{margin-top:10px}}@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}
/* Use actual transparent asset bounds; the generated sprite rows are unequal. */
.scene .yang{width:101px;height:215px;background-size:528px 352px;background-position:-42px -2px}
.scene .yang.dark{background-position:-216px -2px}
.scene .yang.startled{background-position:-387px -2px}
.scene .dog{width:166px;height:136px;background-size:614.4px 409.6px;background-position:-32px -261px;transform:scaleX(-1)}
.scene .dog.barking{background-position:-222px -267px}
.scene .turtle{width:114px;height:72px;background-size:506.88px 337.92px;background-position:-370px -256px}
@keyframes bark{0%,100%{transform:scaleX(-1)}50%{transform:translateY(-7px) scaleX(-1)}}

.primary:disabled{background:#768274;box-shadow:none;opacity:.75}.stamp:hover{background:#fff0bc}.toast{max-width:calc(100vw - 32px);width:max-content;text-align:center}.outfit[aria-pressed="true"]{box-shadow:0 0 0 2px #719441}

#advice-cards fieldset{border:0;padding:0;margin:18px 0;display:flex;gap:10px;flex-wrap:wrap}#advice-cards legend{font-weight:700;margin-bottom:8px}.advice-card{flex:1 1 230px;padding:14px;text-align:left;background:#fffdf6;border:2px solid #c0c8ac;border-radius:6px;color:#254a35;min-height:54px}.advice-card[aria-pressed="true"]{background:#e5f0ce;border-color:#496f35;box-shadow:0 0 0 1px #496f35}.advice-sentence{padding:18px;background:#fff9df;border-left:4px solid #b98834;font-size:18px}#advice-feedback{color:#78501c}#oral-tip{font-weight:700;color:#29583b}

.next-story{display:inline-block;margin:16px;color:#24583f;font-weight:bold}

.audio-controls{display:flex;flex-wrap:wrap;align-items:center;justify-content:flex-end;gap:12px;padding:8px max(3vw,16px);background:#f4f5e9;border-bottom:1px solid #c7d0b8;font-size:14px}.audio-controls button{border:1px solid #819773;border-radius:5px;padding:7px 12px;color:#244a34;background:#fffdf2;min-height:40px}.audio-controls button[aria-pressed="true"]{background:#dfeccd}.audio-controls label{display:flex;align-items:center;gap:8px}.audio-controls input{width:90px;accent-color:#3f6949}.audio-controls span:empty{display:none}@media(max-width:540px){.audio-controls{justify-content:center;gap:8px}.audio-controls label{font-size:13px}}

.music-credit{display:block;font-size:12px;line-height:1.7}.music-credit a{color:inherit}footer{flex-wrap:wrap}

.catalog-link{color:#fff;font-size:14px}.topbar{flex-wrap:wrap}