:root{color-scheme:dark;--paper:#f0e4c8;--gold:#dcb77a;--cinnabar:#8a3e31;--serif:"STKaiti","KaiTi","Kaiti SC","STSong","Songti SC",serif;--sans:"Microsoft YaHei UI","Microsoft YaHei","PingFang SC",sans-serif;font-family:var(--sans);color:var(--paper);background:#151b1b}
*{box-sizing:border-box}body{margin:0;min-width:320px;overflow:hidden}button,a{-webkit-tap-highlight-color:transparent}button{font:inherit;color:inherit;cursor:pointer}a{color:inherit;text-decoration:none}button:focus-visible,a:focus-visible{outline:2px solid #ffe0a7;outline-offset:5px}::selection{background:#d6b582;color:#231d18}
.study{position:relative;height:100svh;min-height:400px;isolation:isolate;background:#151b1b;overflow:clip}
.study::before{content:"";position:absolute;inset:-30px;background:url("assets/chinese-study.webp") center/cover;filter:blur(25px) brightness(.35);z-index:-1}
.masthead{position:absolute;z-index:5;left:0;right:0;top:0;display:grid;grid-template-columns:minmax(0,1fr) auto minmax(0,1fr);align-items:center;gap:20px;padding:22px 3.3vw 44px;background:linear-gradient(#101511dd,#10151175 64%,transparent);pointer-events:none}
.brand{display:flex;align-items:center;gap:12px;justify-self:start}.brand img{width:38px;height:auto;filter:drop-shadow(0 2px 8px #0008)}.brand strong{display:block;font-family:var(--serif);font-size:25px;font-weight:500;letter-spacing:.22em;text-shadow:0 2px 12px #000}.brand span{display:block;font-size:7px;letter-spacing:.18em;color:#d2c5ac;margin-top:6px}.heading{text-align:center;text-shadow:0 2px 16px #000}.heading p{font-family:var(--serif);font-size:12px;color:#d4b984;letter-spacing:.6em;margin:0 0 10px;padding-left:.6em}.heading h1{font-family:var(--serif);font-weight:500;font-size:27px;letter-spacing:.1em;margin:0}.fullscreen{pointer-events:auto;justify-self:end;display:flex;align-items:center;gap:8px;background:#201c1640;border:1px solid #ddc69f50;border-radius:2px;padding:10px 12px;font-size:11px;color:#e1d5bb;backdrop-filter:blur(8px)}.fullscreen:hover{border-color:#ecd09a;background:#43302190}.fullscreen svg{width:16px;height:16px}
.room-window{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;overflow:hidden;scrollbar-width:none;outline:0}.room-window::-webkit-scrollbar{display:none}.room{position:relative;flex:none;width:min(100vw,calc(100svh * 1.77778));aspect-ratio:1672/941;isolation:isolate}.scene{position:absolute;inset:0;transform:translate3d(var(--sway-x,0px),var(--sway-y,0px),0) scale(1.018);transition:transform 1.2s ease-out;will-change:transform}.room-art{display:block;width:100%;height:100%;object-fit:cover;user-select:none;-webkit-user-drag:none}.scene::after{content:"";position:absolute;inset:0;pointer-events:none;box-shadow:inset 0 -65px 75px -35px #101510a6,inset 0 0 65px #15170e33}.moonlight{position:absolute;left:39%;top:6%;width:26%;height:35%;background:radial-gradient(ellipse,#d1e6f212,transparent 68%);pointer-events:none;animation:moon-breathe 9s ease-in-out infinite}@keyframes moon-breathe{50%{opacity:.35}}
.dust{position:absolute;inset:0;pointer-events:none;overflow:hidden}.dust i{position:absolute;width:2px;height:2px;left:21%;top:61%;border-radius:50%;background:#f4db9f;box-shadow:0 0 8px #e9c789;opacity:.55;animation:drift 14s ease-in-out infinite}.dust i:nth-child(2){left:46%;top:26%;animation-delay:-3s}.dust i:nth-child(3){left:64%;top:55%;animation-delay:-8s}.dust i:nth-child(4){left:81%;top:66%;animation-delay:-10s}.dust i:nth-child(5){left:52%;top:83%;animation-delay:-4s}.dust i:nth-child(6){left:13%;top:36%;animation-delay:-1s}.dust i:nth-child(7){left:74%;top:28%;animation-delay:-6s}.dust i:nth-child(8){left:36%;top:75%;animation-delay:-12s}@keyframes drift{50%{transform:translate(18px,-27px);opacity:.08}}
.artifact{position:absolute;left:var(--x);top:var(--y);width:var(--w);height:var(--h);display:block;background:transparent;border:0;padding:0;text-align:center;cursor:pointer;z-index:2;border-radius:35%;touch-action:pan-x;outline:none!important}.artifact-light{position:absolute;inset:3% 0 -3%;background:radial-gradient(ellipse at 50% 65%,#f4dd8648,transparent 68%);opacity:0;transition:opacity .35s;mix-blend-mode:screen;pointer-events:none}.artifact:hover .artifact-light,.artifact:focus-visible .artifact-light,.artifact.is-found .artifact-light{opacity:1}.marker{position:absolute;left:var(--pin,50%);bottom:0;transform:translate(-50%,34%);display:flex;flex-direction:column;align-items:center;width:max-content;max-width:250px;filter:drop-shadow(0 4px 8px #0008);transition:translate .25s}.seal{display:grid;place-items:center;font-family:var(--serif);font-size:13px;width:30px;height:30px;color:#f4dfb0;background:#763329e8;border:1px solid #d9b585;border-radius:2px;position:relative;margin-bottom:9px;box-shadow:0 0 18px #dfb87630}.seal::before{content:"";position:absolute;inset:-6px;border:1px solid #f4d5a35c;transform:rotate(45deg);animation:beacon 4.5s ease-in-out infinite;animation-delay:var(--delay)}.seal::after{content:"";position:absolute;top:100%;height:10px;width:1px;background:#d5b277aa}@keyframes beacon{50%{opacity:.22;scale:1.1}}
.plaque{position:relative;display:flex;align-items:center;flex-direction:column;background:linear-gradient(120deg,#251e17ed,#191d1be8);border:1px solid #c6a2718a;border-radius:2px;padding:9px 17px 10px;min-width:132px;backdrop-filter:blur(6px);box-shadow:0 5px 16px #0005;transition:background .25s,border-color .25s,box-shadow .25s}.plaque::before,.plaque::after{content:"";position:absolute;top:5px;bottom:5px;width:3px;border-top:1px solid #bea275;border-bottom:1px solid #bea275;opacity:.5}.plaque::before{left:5px;border-left:1px solid #bea275}.plaque::after{right:5px;border-right:1px solid #bea275}.object-name{font-family:var(--serif);font-size:10px;color:#c4af88;letter-spacing:.3em;padding-left:.3em;margin-bottom:4px}.plaque strong{font-family:var(--serif);font-weight:500;font-size:19px;white-space:nowrap;letter-spacing:.055em;line-height:1.15;color:#f3e4c8}.action{font-size:9px;letter-spacing:.15em;color:#ceb27c;line-height:1.3;max-height:0;opacity:0;overflow:hidden;transition:max-height .22s,opacity .22s,margin .22s}.action.local{color:#d1bdab}.artifact:hover .marker,.artifact:focus-visible .marker,.artifact.is-found .marker{translate:0 -5px}.artifact:hover .plaque,.artifact:focus-visible .plaque,.artifact.is-found .plaque{border-color:#f0d398;background:linear-gradient(120deg,#4c3623f2,#24271deb);box-shadow:0 0 24px #dfbd5c30,0 6px 22px #0006}.artifact:hover .action,.artifact:focus-visible .action,.artifact.is-found .action{max-height:18px;opacity:1;margin-top:6px}.artifact:focus-visible .plaque{outline:2px solid #ffe0a7;outline-offset:4px}
.artifact-preview{position:absolute;z-index:6;bottom:20px;left:50%;transform:translate(-50%,10px);width:490px;display:flex;align-items:center;gap:18px;padding:10px;background:linear-gradient(105deg,#e9dbbff5,#d4c4a7f2);box-shadow:0 10px 40px #0007;color:#322b21;border:1px solid #ae9261;pointer-events:none;opacity:0;visibility:hidden;transition:opacity .2s,transform .2s,visibility .2s;border-radius:3px}.artifact-preview.is-visible{opacity:1;visibility:visible;transform:translate(-50%,0)}.artifact-preview>img{width:142px;height:80px;object-fit:cover;border:1px solid #76634566}.artifact-preview>div{flex:1;min-width:0}.artifact-preview p{font-family:var(--serif);font-size:12px;letter-spacing:.16em;margin:0 0 6px;color:#8a3e31}.artifact-preview strong{display:block;font-family:var(--serif);font-size:20px;font-weight:600;margin-bottom:7px}.artifact-preview div>span{font-size:10px;color:#625643}.preview-mode{writing-mode:vertical-rl;font-size:10px;letter-spacing:.2em;border-left:1px solid #98805960;padding:4px 7px 4px 10px;line-height:1.5}
.guide{position:absolute;bottom:0;left:0;right:0;z-index:4;padding:50px 24px 21px;text-align:center;pointer-events:none;background:linear-gradient(transparent,#111814bd 72%,#111814e6);transition:opacity .2s}.guide-main{display:flex;align-items:center;justify-content:center;gap:14px}.guide-main p{margin:0;font-family:var(--serif);font-size:17px;letter-spacing:.12em;text-shadow:0 2px 6px #000}.guide-diamond{color:#d7b278;font-size:26px;line-height:1}.guide-line{width:32px;height:1px;background:#c9ad765e}.guide-detail{font-size:10px;letter-spacing:.06em;color:#c3bca7;margin:10px 0 0}.mobile-hint,.room-nav{display:none}.study.has-preview .guide{opacity:0}
dialog{border:1px solid #b69b6a;padding:0;width:min(500px,calc(100% - 36px));max-height:calc(100svh - 28px);border-radius:3px;background:#e9dec8;color:#322b23;box-shadow:0 25px 120px #0009;overflow:auto}dialog::backdrop{background:#0c1715c7;backdrop-filter:blur(9px)}.modal-art{position:relative;aspect-ratio:16/9}.modal-art>img{width:100%;height:100%;object-fit:cover;display:block}.dismiss{position:absolute;top:12px;right:12px;border:1px solid #ebd5a790;background:#29251ee8;color:#f4e6c8;border-radius:2px;width:34px;height:34px;font-size:25px;line-height:1}.modal-body{padding:24px 30px 30px}.modal-kicker{font-family:var(--serif);letter-spacing:.3em;color:#985544;font-size:12px;margin:0}.modal-body h2{font:500 33px var(--serif);margin:12px 0}.modal-body>p:not(.modal-kicker){font-size:13px;color:#6a5d4b;line-height:1.9}.return-button{display:flex;justify-content:space-between;align-items:center;padding:13px 17px;width:100%;border:1px solid #7d4531;background:#7d4531;color:#f4e9d4;font-family:var(--serif);font-size:18px;margin-top:22px}.return-button:hover{background:#643224}#notice{position:fixed;bottom:110px;left:50%;transform:translateX(-50%);z-index:20;background:#e6d5b3;color:#322b20;padding:12px 18px;border-radius:3px;max-width:90%;font-size:12px;box-shadow:0 8px 25px #0006;margin:0}#notice:empty{display:none}
@media(min-width:1000px) and (max-height:850px){.masthead{padding-top:16px}.heading h1{font-size:23px}.heading p{font-size:10px;margin-bottom:7px}.brand strong{font-size:23px}.brand img{width:34px}.plaque strong{font-size:17px}.plaque{padding:7px 13px 8px;min-width:112px}.seal{width:25px;height:25px;font-size:11px;margin-bottom:7px}.object-name{font-size:9px}.guide{padding-bottom:15px}.guide-main p{font-size:15px}.guide-detail{font-size:9px;margin-top:7px}.artifact-preview{bottom:12px;padding:8px;width:445px;gap:13px}.artifact-preview>img{width:124px;height:70px}.artifact-preview strong{font-size:18px}}
@media(max-width:999px){.masthead{padding:15px 20px 35px;gap:10px}.brand strong{font-size:22px}.brand img{width:32px}.brand span{font-size:6px}.heading h1{font-size:20px}.heading p{font-size:10px;margin-bottom:7px}.fullscreen{padding:9px}.fullscreen>span{display:none}.plaque strong{font-size:15px}.plaque{padding:7px 12px;min-width:103px}.object-name{font-size:8px}.seal{width:23px;height:23px;font-size:10px}.guide-main p{font-size:14px}}
@media(max-width:700px) and (orientation:portrait){.study{min-height:560px}.masthead{height:115px;padding:14px 20px 22px;grid-template-columns:1fr auto;background:linear-gradient(#17211f,#17211fdc 78%,transparent);gap:12px}.brand strong{font-size:22px}.brand span{font-size:6px}.brand img{width:33px}.heading{grid-column:1/-1;grid-row:2;display:flex;align-items:center;justify-content:center;gap:12px}.heading p{font-size:12px;letter-spacing:.08em;padding:0;margin:0;color:#e3c694}.heading h1{font-size:13px;letter-spacing:.03em;color:#cabfa8}.fullscreen{grid-column:2;grid-row:1}.room-window{top:92px;bottom:125px;display:block;overflow-x:auto;overflow-y:hidden;overscroll-behavior-x:contain;touch-action:pan-x;scroll-behavior:smooth}.room{width:max(1050px,calc((100svh - 185px) * 1.77778));position:relative;top:50%;translate:0 -50%;height:auto}.scene{transform:none!important}.scene::after{box-shadow:inset 0 0 20px #0002}.plaque strong{font-size:16px}.plaque{min-width:110px}.object-name{font-size:9px}.marker{transform:translate(-50%,25%)}.artifact-preview{display:none}.guide{padding:20px 14px 16px;background:linear-gradient(transparent,#14201cf7 20%);opacity:1!important}.desktop-hint{display:none}.mobile-hint{display:inline}.guide-main{gap:9px}.guide-main p{font-size:14px;letter-spacing:.04em}.guide-diamond{font-size:21px}.guide-line{width:20px}.guide-detail{font-size:8px;margin-top:7px}.room-nav{display:flex;gap:7px;justify-content:center;margin-top:13px;pointer-events:auto}.room-nav button{font-family:var(--serif);font-size:15px;flex:1;max-width:65px;background:#26332bcc;color:#dfceb0;border:1px solid #97866466;padding:7px 2px;border-radius:2px}.room-nav button[aria-pressed="true"]{background:#744735;color:#fff0d8;border-color:#c6a477}.modal-body{padding:22px}.modal-body h2{font-size:30px}.modal-body>p:not(.modal-kicker){font-size:12px}}
@media(max-height:550px) and (orientation:landscape){.masthead{padding:8px 20px 22px}.brand strong{font-size:18px}.brand img{width:25px}.brand span{font-size:5px;margin-top:3px}.heading h1{font-size:17px}.heading p{font-size:8px;margin-bottom:4px}.fullscreen{padding:7px}.plaque{padding:5px 9px;min-width:88px}.plaque strong{font-size:13px}.object-name{font-size:7px;margin-bottom:2px}.seal{width:18px;height:18px;font-size:9px;margin-bottom:5px}.seal::before{inset:-3px}.guide{padding:22px 12px 9px}.guide-main p{font-size:11px}.guide-detail{font-size:7px;margin-top:4px}.artifact-preview{width:350px;padding:6px;gap:10px;bottom:8px}.artifact-preview>img{width:96px;height:54px}.artifact-preview p{font-size:10px;margin-bottom:4px}.artifact-preview strong{font-size:15px;margin-bottom:4px}.artifact-preview div>span{font-size:8px}.preview-mode{font-size:8px}.action{font-size:8px}}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{animation:none!important;transition:none!important;scroll-behavior:auto!important}.scene{transform:none!important}}