@font-face{font-family:Xumin;src:url('assets/xumin.ttf') format('truetype');unicode-range:U+0030-0039,U+0041-005A,U+0061-007A;font-display:swap}*{box-sizing:border-box}html,body{width:100%;height:100%;margin:0;overflow:hidden}body{background:#dbeaf0;color:#203c4d;font:16px/1.45 Xumin,'Microsoft YaHei',Arial,sans-serif}button{font:inherit;color:inherit;border:1px solid #b5cfd980;border-radius:14px;background:#fffffff0;padding:10px 16px;cursor:pointer;transition:background .15s,box-shadow .15s}button:hover{background:#f0faff;box-shadow:0 3px 15px #254b6220}button:focus-visible{outline:3px solid #1e91bb;outline-offset:4px}button:disabled{opacity:.45;cursor:default}[hidden]{display:none!important}h1,h2,p{margin:0}#experience{position:absolute;inset:0}#view{display:block;width:100%;height:100%;touch-action:none;cursor:grab;outline:none}#view.dragging{cursor:grabbing}.topbar{position:absolute;top:max(20px,env(safe-area-inset-top));left:24px;right:24px;display:flex;align-items:center;justify-content:space-between;gap:20px;z-index:20;pointer-events:none}.brand,.top-actions{pointer-events:auto}.brand{display:flex;gap:15px;align-items:center;padding:12px 22px;background:#ffffffec;backdrop-filter:blur(12px);border:1px solid #ffffffb0;border-radius:22px;box-shadow:0 8px 30px #24495c15}.brand-mark{border:1px solid #c6dee4;background:#e5f2f3;color:#2e7581;border-radius:50%;width:54px;height:54px;display:grid;place-items:center;font:22px Arial,sans-serif;flex-shrink:0}h1{font:600 23px/1.5 'Microsoft YaHei',sans-serif;letter-spacing:1px}.brand p{font-size:13px;color:#637f8e}.top-actions{display:flex;gap:10px}.top-actions button{padding:12px 18px;backdrop-filter:blur(12px);box-shadow:0 4px 18px #254b6210}#portals{position:absolute;inset:0;overflow:hidden;pointer-events:none}.portal{position:absolute;left:0;top:0;width:260px;background:#fffffff2;border:1px solid #ffffffe0;border-radius:22px;box-shadow:0 18px 65px #233d4d40;overflow:hidden;pointer-events:auto;transform-origin:50% 50%;will-change:transform;backdrop-filter:blur(8px)}.portal img{width:100%;height:144px;object-fit:cover;display:block}.portal-info{padding:17px 19px 19px}.portal .eyebrow{font-size:12px;color:#5d8b9a;letter-spacing:3px}.portal h2{font-size:24px;font-weight:500;line-height:1.2;margin:6px 0}.portal .english{font-size:29px;line-height:1.4}.portal .weather{font-size:18px;color:#577584;margin:5px 0 12px}.portal .enter{width:100%;padding:10px;background:#ffe295;border:0;font-weight:500;font-family:'Microsoft YaHei',sans-serif;display:flex;justify-content:space-between;align-items:center}.portal .enter:hover{background:#ffcf57}.portal.visited .eyebrow{color:#378171}.portal.visited .eyebrow::after{content:' · 已到访';letter-spacing:1px}.bottom{position:absolute;bottom:max(20px,env(safe-area-inset-bottom));left:50%;transform:translateX(-50%);display:flex;flex-direction:column;align-items:center;gap:13px;z-index:20;width:max-content;max-width:calc(100% - 30px)}#cityNav{display:flex;padding:7px;background:#ffffffeb;border:1px solid #fff;border-radius:18px;backdrop-filter:blur(12px);gap:5px;box-shadow:0 8px 30px #203d4c20}#cityNav button{border:0;background:transparent;font-size:14px;padding:9px 16px;border-radius:11px;white-space:nowrap;font-family:'Microsoft YaHei',sans-serif}#cityNav button.active{background:#ffe397;color:#443b29}.controls{display:flex;gap:6px;align-items:center;border:1px solid #ffffff70;background:#ffffffdd;backdrop-filter:blur(12px);padding:6px 10px;border-radius:16px}.controls button{border:0;background:transparent;border-radius:10px;padding:7px 11px;font-family:'Microsoft YaHei',sans-serif;font-size:13px}.controls button.active{background:#c7e8e2}.controls #zoomIn,.controls #zoomOut{font-size:22px;font-family:Arial,sans-serif;width:38px;padding:3px}.controls output{font:12px Arial,sans-serif;color:#577381;min-width:33px;text-align:center}.turn-controls{position:absolute;inset:50% 20px auto;display:flex;justify-content:space-between;pointer-events:none;z-index:15}.turn-controls button{pointer-events:auto;border-radius:50%;width:44px;height:44px;padding:0;font:34px/1 Arial,sans-serif;background:#ffffffbf;box-shadow:0 4px 20px #294b6512}#weatherCard{position:absolute;left:26px;top:140px;z-index:18;width:310px;padding:22px;border:1px solid #fff;background:#fffffff0;backdrop-filter:blur(14px);border-radius:22px;box-shadow:0 12px 45px #173b552e}.weather-heading{display:flex;align-items:center;justify-content:space-between;gap:10px}.weather-heading>span{font-size:37px;color:#2a7a8c}.weather-heading button{border:0;background:none;padding:0 5px;font:26px Arial}.weather-heading+h2{font-size:40px;line-height:1.5;margin:10px 0}#weatherQuestion{font-size:24px;line-height:1.5;margin-bottom:16px}#readWeather{background:#ffe398;border:0}.scene-type{font:11px 'Microsoft YaHei',sans-serif;color:#718593;margin-top:16px}#gestureHint{position:absolute;left:50%;bottom:158px;transform:translateX(-50%);z-index:19;padding:9px 17px;background:#203e50aa;border-radius:30px;color:white;font:13px 'Microsoft YaHei',sans-serif;white-space:nowrap;transition:opacity .5s;pointer-events:none}#loading{position:absolute;inset:0;background:#edf5f8f0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:20px;z-index:100;color:#35586c;transition:opacity .35s}#loading.hidden{opacity:0;pointer-events:none}.spinner{border:3px solid #c9e2e8;border-top-color:#2e899c;border-radius:50%;width:42px;height:42px;animation:spin 1.1s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}#loading p{font-family:'Microsoft YaHei',sans-serif}#loadActions{display:flex;gap:12px}#toast{position:absolute;left:50%;top:115px;transform:translateX(-50%);z-index:120;padding:10px 20px;background:#193c52ed;color:white;border-radius:12px;font:14px 'Microsoft YaHei',sans-serif;opacity:0;pointer-events:none;transition:opacity .2s}#toast.visible{opacity:1}#flatView{position:absolute;inset:0;background-size:cover;background-position:center}.flat #portals{display:flex;gap:16px;align-items:center;overflow-x:auto;padding:130px 50px 200px;pointer-events:auto}.flat .portal{position:relative;flex:0 0 245px;transform:none!important}.flat .turn-controls{display:none}.city #gestureHint{display:none}@media(max-width:760px){.topbar{left:12px;right:12px;top:max(12px,env(safe-area-inset-top));gap:8px}.brand{padding:10px 13px;border-radius:17px;gap:9px}.brand-mark{width:38px;height:38px;font-size:16px}h1{font-size:17px;letter-spacing:0}.brand p{font-size:10px}.top-actions{gap:5px}.top-actions button{padding:9px 11px;font-size:12px;border-radius:11px}.portal{width:225px}.portal img{height:116px}.portal-info{padding:14px 16px 16px}.portal h2{font-size:22px}.portal .english{font-size:26px}.portal .weather{font-size:17px}.bottom{bottom:max(14px,env(safe-area-inset-bottom));max-width:calc(100% - 20px);gap:9px}#cityNav{padding:5px;gap:0;max-width:100%}#cityNav button{font-size:12px;padding:8px 11px}.controls{gap:1px;padding:5px 7px}.controls button{padding:7px 9px;font-size:12px}.turn-controls{left:9px;right:9px}.turn-controls button{width:32px;height:38px;font-size:29px}#weatherCard{left:12px;top:102px;width:245px;padding:17px;background:#ffffffef}#weatherWords{font-size:32px}#weatherQuestion{font-size:21px}#weatherCard .weather-heading>span{font-size:29px}#gestureHint{bottom:143px;font-size:11px;padding:8px 13px}#toast{top:88px;max-width:90vw;width:max-content;font-size:12px}#loadActions{flex-direction:column}}@media(max-height:530px){.topbar{top:10px}.brand{padding:7px 13px}.brand-mark{width:35px;height:35px}.brand h1{font-size:17px}.brand p{display:none}.bottom{bottom:10px;flex-direction:row;gap:10px}#gestureHint{bottom:75px}.portal{width:205px}.portal img{height:100px}.portal-info{padding:10px 14px}.portal .eyebrow{display:none}.portal h2{font-size:18px}.portal .english{font-size:23px}.portal .weather{font-size:16px;margin-bottom:8px}.portal .enter{padding:7px 12px}#weatherCard{top:85px;padding:15px;width:225px}#weatherWords{font-size:29px;margin:3px 0}#weatherQuestion{font-size:20px}.scene-type{display:none}}

/* Weather card and individual pronunciation */
#weatherCard{left:auto;right:26px;width:340px;max-height:calc(100dvh - 285px);overflow-y:auto;overscroll-behavior:contain;scrollbar-width:thin}
#weatherQuestion{margin:15px 0 12px;font-size:27px;line-height:1.5}
#weatherWords{display:flex;flex-wrap:wrap;align-items:baseline;gap:6px;font-size:34px;line-height:1.3;margin:0 0 17px}
.weather-word{font:inherit;padding:2px 8px 6px;border-radius:9px;border:1px solid #c6dfe5;background:#eff8fa;color:#24576a;white-space:nowrap}
.weather-word:hover,.weather-word[aria-pressed=true]{background:#ffe398;border-color:#efc457;box-shadow:none}
.word-join{font-size:25px;color:#577584}
#readWeather,#readWord{font-family:Xumin,Arial,sans-serif;font-size:25px;line-height:1.2;background:#ffe398;border:0;min-height:44px;min-width:92px}
#readWeather.playing,#readWord.playing{background:#bce4de;box-shadow:0 0 0 2px #318879}
#wordLesson{margin-top:20px;padding:15px 16px;background:#edf6f8;border:1px solid #cce0e6;border-radius:16px}
.word-lesson-heading{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:12px}
#focusWord{font-size:56px;line-height:1.35;color:#24576a}
#closeWord{font:24px Arial,sans-serif;padding:2px 4px;border:0;background:transparent}
@media(max-width:760px){#weatherCard{left:auto;right:12px;width:270px;max-height:calc(100dvh - 250px)}#weatherQuestion{font-size:24px}#weatherWords{font-size:29px;gap:4px}.word-join{font-size:22px}#focusWord{font-size:49px}}
@media(max-height:530px){#weatherCard{top:85px;width:285px;max-height:calc(100dvh - 165px)}#weatherQuestion{font-size:22px;margin-top:8px}#weatherWords{font-size:27px}#wordLesson{margin-top:12px;padding:10px 12px}#focusWord{font-size:42px}}

/* Existing cute four-line library cards, preserved without redrawing */
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip-path:inset(50%);white-space:nowrap;border:0}
#wordLesson{padding:8px 10px 12px;background:#f8fbfd}
.word-lesson-heading{margin-bottom:2px;justify-content:flex-end}
#expandWord{display:block;width:100%;border:0;background:transparent;padding:0;margin-bottom:10px;border-radius:12px}
#expandWord:hover{box-shadow:0 0 0 2px #73a9c3}
#wordCardImage{display:block;width:100%;height:auto;object-fit:contain;border-radius:10px}
#wordDialog{position:fixed;inset:0;width:min(800px,94vw);max-height:94dvh;margin:auto;border:1px solid #cbdce7;border-radius:22px;background:#f7f5ff;padding:42px 20px 16px;overflow:auto;text-align:center;color:#203c4d;box-shadow:0 15px 90px #19374b55}
#wordDialog::backdrop{background:#19384c99;backdrop-filter:blur(6px)}
#closeWordDialog{position:absolute;top:7px;right:10px;font:28px Arial,sans-serif;border:0;background:transparent;padding:3px 10px}
#wordDialogImage{display:block;object-fit:contain;width:100%;height:auto;max-height:calc(94dvh - 120px);margin:0 auto 12px}
#readDialogWord{font-family:Xumin,Arial,sans-serif;font-size:29px;line-height:1.2;min-height:44px;min-width:110px;border:0;background:#ffe398}
#readDialogWord.playing{background:#bce4de;box-shadow:0 0 0 2px #318879}
@media(max-width:760px){#wordDialog{padding:40px 10px 12px;border-radius:16px}#wordLesson{padding:6px 8px 10px}}

#weatherLayer{position:absolute;inset:0;display:block;width:100%;height:100%;pointer-events:none;z-index:1}
#portals{z-index:2}
.ambience-controls{position:absolute;right:24px;bottom:max(22px,env(safe-area-inset-bottom));z-index:21;display:flex;gap:7px;padding:6px;background:#ffffffeb;border:1px solid white;border-radius:15px;backdrop-filter:blur(10px)}
.ambience-controls button{font:13px 'Microsoft YaHei',sans-serif;border:0;background:transparent;padding:8px 11px}
.ambience-controls button[aria-pressed=true]{background:#d3eae8}
@media(max-width:760px){.ambience-controls{right:auto;left:12px;bottom:140px}.ambience-controls button{font-size:12px;padding:7px 10px}#weatherCard{max-height:calc(100dvh - 305px)}}
@media(max-height:530px){.ambience-controls{left:12px;right:auto;bottom:78px}#weatherCard{max-height:calc(100dvh - 165px)}}

#cacheStatus{position:absolute;left:24px;bottom:24px;z-index:21;font:12px 'Microsoft YaHei',sans-serif;padding:10px 14px;background:#ffffffea;color:#597381;border-color:#d2e4ec;border-radius:13px}
#cacheStatus.ready{color:#377c65;background:#f2fffa;border-color:#bce1d0}
#cacheStatus.failed{color:#926729}
body.city #cacheStatus{display:none}
@media(max-width:760px){#cacheStatus{left:12px;bottom:194px}}
@media(max-height:530px){#cacheStatus{left:12px;bottom:135px}}

#cityNav button{font-family:Xumin,Arial,sans-serif;font-size:23px;line-height:1.25}
@media(max-width:760px){#cityNav{overflow-x:auto;scrollbar-width:none}#cityNav button{font-size:19px;padding:8px 9px}}
@media(max-height:530px){#cityNav button{font-size:19px;padding:7px 11px}}