:root{color-scheme:light;--ink:#243b43;--muted:#647a80;--paper:#fbfaf6;--green:#22634f;--line:#dce5df;--mint:#edf4ed;font-family:"Noto Serif CJK SC","Songti SC","SimSun",serif;background:var(--paper);color:var(--ink)}
*{box-sizing:border-box}body{margin:0}button,a,input{touch-action:manipulation}button{font:inherit;cursor:pointer;border:1px solid var(--green);border-radius:8px;padding:9px 16px;background:var(--green);color:#fff;white-space:nowrap}button:hover{filter:brightness(.94)}button:focus-visible,a:focus-visible,input:focus-visible{outline:3px solid #df9f42;outline-offset:4px}.quiet{background:transparent;border-color:var(--line);color:var(--ink)}.masthead{max-width:1060px;margin:auto;padding:26px 34px;display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid var(--line)}.brand{display:flex;align-items:center;gap:10px;font-weight:700;text-decoration:none;color:var(--ink);font-size:19px}.brand-mark{display:inline-flex;align-items:center;justify-content:center;width:34px;height:36px;border-radius:9px 9px 3px 9px;color:#fff;background:var(--green);font-size:20px}.edition{margin-left:8px;padding-left:17px;border-left:1px solid var(--line);font:12px sans-serif;color:var(--muted)}main{max-width:820px;margin:auto;padding:52px 28px 140px}.intro{padding-bottom:30px;margin-bottom:32px;border-bottom:2px solid var(--ink)}.eyebrow{color:var(--green);font:13px sans-serif;letter-spacing:.14em}h1{font-size:clamp(28px,5vw,44px);font-weight:600;line-height:1.35;margin:16px 0 18px;overflow-wrap:anywhere}.meta{font:13px/1.7 sans-serif;color:var(--muted)}.message{margin:0 0 35px;overflow-wrap:anywhere}.speaker{display:flex;align-items:center;gap:10px;font:12px sans-serif;color:var(--muted);margin-bottom:14px}.number{font:italic 15px Georgia,serif;color:#8b9c95}.user{background:var(--mint);border-left:3px solid #8caf98;padding:20px 24px;border-radius:0 10px 10px 0}.user .body{font-family:"PingFang SC","Microsoft YaHei",sans-serif;font-size:15px}.body{font-size:17px;line-height:1.95}.body>:first-child{margin-top:0}.body>:last-child{margin-bottom:0}.body h1,.body h2,.body h3{font-size:1.2em;line-height:1.55;margin:1.4em 0 .6em}.body p{margin:.7em 0}.body blockquote{border-left:3px solid #b9c9bb;margin:18px 0;padding:4px 20px;color:var(--muted)}pre{background:#eef0eb;padding:17px;border-radius:8px;overflow:auto;font:13px/1.8 Consolas,monospace}code{font-family:Consolas,monospace;font-size:.88em}table{border-collapse:collapse;display:block;overflow:auto;max-width:100%;font-size:.9em}th,td{padding:9px 13px;border:1px solid var(--line);min-width:80px}th{background:var(--mint)}a{color:var(--green)}.pictures{display:flex;flex-wrap:wrap;gap:12px;margin-top:15px}.pictures img{max-width:100%;max-height:500px;object-fit:contain;border:1px solid var(--line);border-radius:7px;cursor:zoom-in}.pictures img.expanded{max-height:none;cursor:zoom-out}.sources,.files,.tools{font:13px/1.9 sans-serif;color:var(--muted);margin-top:16px}.sources a{display:block}.tools summary{cursor:pointer}.tools p{white-space:pre-wrap;max-height:260px;overflow:auto}.katex-display{overflow-x:auto;overflow-y:hidden;padding:6px 0}.status{font:15px/1.8 sans-serif;color:var(--muted);white-space:pre-wrap}.status:empty{display:none}footer{border-top:1px solid var(--line);padding-top:25px;display:flex;gap:10px;flex-wrap:wrap;font:12px sans-serif;color:var(--muted)}footer span{width:100%;margin-bottom:10px}#player{position:fixed;bottom:max(14px,env(safe-area-inset-bottom));left:50%;transform:translateX(-50%);width:min(740px,calc(100% - 28px));display:flex;align-items:center;gap:12px;padding:12px 16px;background:#fffef9f5;border:1px solid var(--line);border-radius:12px;box-shadow:0 4px 22px #243b4314;font:12px sans-serif}#progress{min-width:20px;flex:1;accent-color:var(--green)}#position{min-width:32px}dialog{border:1px solid var(--line);border-radius:14px;text-align:center;padding:24px;max-width:calc(100% - 24px)}dialog::backdrop{background:#183b354d}#qr-code{margin:20px auto}#qr-code svg{width:min(65vw,310px);height:auto}[hidden]{display:none!important}@media(max-width:520px){.masthead{padding:18px 20px}.edition{display:none}main{padding:35px 20px 130px}.intro{margin-bottom:25px}.body{font-size:16px}.user{padding:17px 18px}#player{gap:8px;padding:10px}#player button{padding:8px 10px}}
@media(prefers-reduced-motion:no-preference){.intro{animation:enter .3s ease-out}@keyframes enter{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}}
@media print{#player,.masthead button,footer button{display:none!important}main{padding-bottom:0}.message{break-inside:avoid}.body{font-size:12pt}}