:root{font-family:"Microsoft YaHei","PingFang SC",system-ui,sans-serif;color:#294d48;background:#91cee8;color-scheme:light;--green:#276c53;--gold:#b6803d;--cream:#fffaf0}*{box-sizing:border-box}html,body{width:100%;height:100%;margin:0;overflow:hidden}body{user-select:none}button,input,select{font:inherit}button,a,input,select{-webkit-tap-highlight-color:transparent}button{cursor:pointer}button:disabled{cursor:default;opacity:.42}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid #c7863f;outline-offset:4px}[hidden]{display:none!important}#c3d{position:fixed;inset:0;width:100%;height:100%;display:block;touch-action:none;outline:none}.loading{position:fixed;inset:0;display:grid;place-items:center;background:#edf2de;font-size:20px;z-index:90}.screen{position:fixed;inset:0;z-index:40;display:flex;align-items:center;padding:30px 5vw;overflow:auto;background:linear-gradient(90deg,rgba(31,75,61,.28),transparent 85%)}.screen.centered{justify-content:center;background:rgba(34,65,66,.27);backdrop-filter:blur(4px)}.paper{width:min(490px,100%);flex-shrink:0;padding:32px 38px;border:1px solid rgba(255,255,255,.9);border-radius:8px 30px 30px 8px;background:linear-gradient(120deg,#fffdf5,#faf4e1);box-shadow:0 20px 65px #25473c32,6px 6px 0 #e6ddbc99;position:relative}.paper:before{content:"";position:absolute;left:9px;top:20px;bottom:20px;border-left:1px solid #decfa977}.eyebrow{font-size:11px;letter-spacing:.14em;font-weight:750;color:#638d63;text-transform:uppercase}h1,h2,p{margin:0}h1,h2{font-family:"Noto Serif CJK SC","Source Han Serif SC","STSong","SimSun",serif;color:#235c46;font-weight:800}h1{font-size:clamp(34px,3.4vw,49px);line-height:1.25;letter-spacing:.03em;margin:15px 0 6px}h2{font-size:30px;line-height:1.42;margin:12px 0}.subtitle{color:#ac7437;font-size:19px;letter-spacing:.28em}.small-subtitle{font-size:14px;letter-spacing:.06em}.story{font-size:14px;line-height:1.95;color:#64766a;margin:22px 0}.story p+p{margin-top:7px}.primary{border:1px solid #255e46;border-radius:12px;padding:14px 23px;background:linear-gradient(#448464,#2b6952);color:#fffbee;font-weight:750;font-size:17px;letter-spacing:.04em;box-shadow:0 4px 0 #1a4e3c;min-height:52px;transition:transform .14s,filter .14s;width:100%}.primary>span{float:right}.primary:hover{filter:brightness(1.09);transform:translateY(-1px)}.primary:active{transform:translateY(2px);box-shadow:0 2px 0 #1a4e3c}.small{display:block;font-size:11px;color:#849282;line-height:1.7;margin-top:13px}.chapter-list{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;margin:24px 0 16px}.chapter-card{border:1px solid #d7dabc;border-radius:10px;background:#f0f2df;color:#4c7052;padding:9px 2px;font-size:10px}.chapter-card b{display:block;font-family:serif;font-size:22px;margin-bottom:5px;font-weight:500}.chapter-card:hover:not(:disabled){background:#e3edcf}.chapter-card.current{border-color:#6e9c62;background:#e4edcf}.link-row{display:flex;justify-content:center;gap:17px;align-items:center;flex-wrap:wrap;margin-top:20px}.text-btn,.link-row a{font-size:12px;border:0;background:none;color:#687e66;padding:4px 0;text-decoration:none;border-bottom:1px solid #c1ceae}.text-btn:hover,.link-row a:hover{color:#2a6a4c}.footer{font-size:10px;color:#a0a58c;line-height:1.8;margin-top:25px;text-align:center}.confirm{background:#f1e5cc;padding:14px;border-radius:10px;font-size:12px;line-height:1.8;margin-top:15px}.small-btn{background:#fff9eb;border:1px solid #c4b580;border-radius:7px;padding:7px;margin:10px 12px 0 0;color:#665435}.cover-caption{position:absolute;right:6vw;bottom:8vh;color:white;text-shadow:0 2px 8px #345d6199;font-size:13px;letter-spacing:.16em}.cover-caption span{font:29px serif;display:block;margin-bottom:14px}.cover-caption i{display:inline-block;width:35px;border-top:1px solid #fff;vertical-align:middle;margin-right:12px}.lesson{border-left:3px solid #b3c892;background:#edf0dd;padding:14px 16px;border-radius:0 10px 10px 0;margin:0 0 24px;font-size:13px;line-height:1.85}.lesson strong{color:#487344}.lesson p{margin-top:6px;color:#6c7d66}#hud{position:fixed;inset:0;z-index:20;pointer-events:none}.hud-top{position:absolute;top:22px;left:26px;right:26px;display:flex;justify-content:space-between;align-items:flex-start;gap:16px}.hud-panel{border:1px solid #fff9;border-radius:13px;background:#fffaf0ed;box-shadow:0 5px 20px #3050471c;padding:12px 16px;backdrop-filter:blur(8px)}.progress-panel{width:248px}.progress-panel strong{font-size:13px;display:block;margin:8px 0;color:#426849}.progress-panel .small{margin-top:5px;font-size:10px}.track{height:4px;background:#dfe7d3;border-radius:8px;overflow:hidden}.track i{display:block;height:100%;width:0;background:#75a85e;transition:width .25s}.hud-right{display:flex;gap:12px;align-items:flex-start;font-size:14px}.hud-right small{display:block;font-size:10px;color:#88967c;margin-top:4px}.star-symbol{color:#b59a43;font-size:24px;vertical-align:middle}.icon-btn{pointer-events:auto;width:46px;height:46px;border:1px solid #fff;border-radius:13px;background:#fffaf0e8;color:#486954;font-size:20px}.hint{position:absolute;left:50%;bottom:64px;transform:translateX(-50%);max-width:calc(100% - 50px);width:max-content;padding:12px 20px;border:1px solid #ffffffe0;border-radius:12px;background:#fffcf0e8;color:#58734c;font-size:13px;text-align:center;line-height:1.7;box-shadow:0 4px 18px #244a3d24}.hint.warning{background:#fff0d5;color:#9c641f;border-color:#eac380}.key-guide{position:absolute;bottom:23px;left:50%;transform:translateX(-50%);white-space:nowrap;color:white;text-shadow:0 1px 4px #294a3e;font-size:11px}kbd{font-family:inherit;font-size:10px;font-weight:700;display:inline-block;padding:3px 5px;border-radius:4px;background:#fff9eae8;color:#56735b;margin:0 3px 0 9px;border-bottom:2px solid #c4cfad}.pressure{position:absolute;top:140px;left:26px;width:190px;font-size:11px;color:#b87738}.pressure .track{margin-top:8px;background:#f1dbc7}.pressure .track i{background:linear-gradient(90deg,#e5b355,#d96942)}.rescue{position:absolute;width:auto;bottom:112px;left:50%;transform:translateX(-50%);pointer-events:auto;white-space:nowrap}.rescue:hover{transform:translateX(-50%) translateY(-1px)}.settings{margin:23px 0;border-top:1px solid #dde0c5}.settings label{display:flex;justify-content:space-between;gap:20px;align-items:center;padding:14px 0;border-bottom:1px solid #dde0c5;font-size:13px;color:#557050}.settings small{display:block;color:#919b83;font-size:10px;margin-top:5px}.settings input{accent-color:#397b54;width:20px;height:20px}.settings select{padding:7px 10px;border:1px solid #d4d9ba;background:#f7f8ed;color:#52714a;border-radius:6px;font-size:12px}.result-strip{display:flex;gap:20px;justify-content:center;padding:16px 0;margin:12px 0 24px;border-top:1px solid #dbdec4;border-bottom:1px solid #dbdec4;font-size:12px;color:#789065}.result-strip strong{display:block;font:22px serif;color:#4e754b;margin-bottom:7px}.ending-paper{text-align:center}.ending-star{color:#c0a451;font-size:55px;line-height:1.2;margin-top:12px}.ending-paper h2{font-size:36px}.ending-paper .story{font-size:13px}.ending-screen{background:linear-gradient(140deg,#eef5cf50,#91d2e65e)!important}#toast{position:fixed;z-index:30;top:24%;left:50%;transform:translateX(-50%);max-width:min(640px,90vw);width:max-content;background:#fffcecfa;border:1px solid white;border-radius:14px;padding:13px 21px;color:#63754a;font-size:13px;box-shadow:0 6px 30px #30593b24;line-height:1.7;text-align:center}#save-warning,#error-banner{position:fixed;z-index:100;left:20px;right:20px;top:10px;padding:13px;background:#fff0d8;color:#82522b;border-radius:10px;font-size:13px;text-align:center}#error-banner{background:#fce1d8;color:#933f35}#fade{position:fixed;inset:0;background:#fff9e7;opacity:0;z-index:25;pointer-events:none;transition:opacity .3s}#fade.flash{opacity:.58}#qa-panel{position:fixed;z-index:120;right:10px;bottom:10px;background:#102c32df;color:#e6f4e0;padding:8px;font:10px monospace;max-width:400px}#qa-panel button{font:11px sans-serif}#qa-status{display:block;white-space:pre-line;margin-top:6px}@media(max-width:800px){.screen{padding:20px}.paper{padding:26px 28px;width:min(450px,100%)}.cover-caption{display:none}.hud-top{top:12px;left:12px;right:12px}.progress-panel{width:215px}.hud-right{gap:7px}.pressure{left:12px;top:130px}.key-guide{font-size:10px}.hint{font-size:12px;bottom:57px}}@media(max-height:670px){.screen{align-items:flex-start;padding-top:20px;padding-bottom:20px}.paper{padding-top:23px;padding-bottom:23px}.story{margin:16px 0}.chapter-list{margin:16px 0 12px}.footer{margin-top:18px}.ending-star{font-size:32px}.ending-paper .story{margin:12px 0}.settings label{padding:11px 0}}@media(prefers-reduced-motion:reduce){*{transition:none!important}}

#opening-overlay{position:fixed;inset:0;z-index:25;pointer-events:none;background:linear-gradient(transparent 68%,#17273377)}.opening-actions{position:absolute;right:26px;top:22px;display:flex;align-items:center;gap:12px}.opening-actions button{pointer-events:auto;margin:0}.opening-caption{position:absolute;bottom:9vh;left:8vw;right:8vw;text-align:center;color:#fff8e8;font-size:clamp(16px,2vw,23px);line-height:1.8;text-shadow:0 2px 10px #17212a;font-weight:650}

/* Website integration: keep the game's established art direction. */
.mobile-advice{display:none;border-left:2px solid #bb965a;padding-left:10px;line-height:1.75;color:#77633e}
.graphics-fallback{z-index:110;justify-content:center;background:#edf2de}
.graphics-fallback .story{user-select:text}
.graphics-fallback .primary{display:block;text-decoration:none;text-align:center}
@media(max-width:700px) and (pointer:coarse){.mobile-advice{display:block}}
.game-language{position:fixed;right:16px;bottom:16px;z-index:125;display:flex;gap:8px;align-items:center;padding:6px 10px;border:1px solid #fff9;border-radius:8px;background:#fffaf0ed;color:#426849;font:12px system-ui,sans-serif;box-shadow:0 4px 18px #244a3d24}
.game-language button{border:0;background:none;color:inherit;font:inherit;cursor:pointer;padding:6px 8px;min-height:32px}
.game-language button:focus-visible{outline:2px solid #c7863f;outline-offset:2px}
.screen{align-items:safe center}.chapter-card{overflow-wrap:anywhere;line-height:1.5}
html[lang="en"] h1{font-size:clamp(32px,3vw,43px);line-height:1.12;letter-spacing:0}
html[lang="en"] .subtitle{letter-spacing:.03em;font-size:17px}
html[lang="en"] .result-strip{gap:14px;font-size:11px}
@media(max-width:700px){.game-language{right:10px;bottom:9px}.key-guide{white-space:normal;max-width:calc(100% - 116px);left:12px;transform:none;text-align:left}.hint{bottom:78px}}