:root{color-scheme:light;--toolbar-height:64px;--bg:#f4efe6;--panel:#fffaf2;--text:#26312f;--muted:#626b65;--accent:#975127;--green:#476c5b;--border:#d9cdbb}
*{box-sizing:border-box}body{margin:0;padding-bottom:calc(var(--toolbar-height) + env(safe-area-inset-bottom,0px));background:var(--bg);color:var(--text);font:16px/1.5 system-ui,"PingFang SC","Microsoft YaHei",sans-serif}button,input,select{font:inherit}button,a,input,select,summary{-webkit-tap-highlight-color:transparent}a{color:var(--green)}button{cursor:pointer}button:disabled,select:disabled{cursor:default}a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,summary:focus-visible,area:focus-visible{outline:3px solid var(--green);outline-offset:3px}[hidden]{display:none!important}
.reader-toolbar{position:fixed;bottom:0;left:0;right:0;z-index:70;display:flex;align-items:center;gap:14px;height:calc(var(--toolbar-height) + env(safe-area-inset-bottom,0px));padding:10px 18px calc(10px + env(safe-area-inset-bottom,0px));background:var(--panel);border-top:1px solid var(--border)}.menu-toggle,.retry-audio,.clear-progress{border:1px solid var(--border);border-radius:8px;background:var(--panel);color:var(--text);padding:8px 12px;min-height:42px}.home-link{font-weight:650;text-decoration:none}.page-nav{margin-left:auto;display:flex;gap:18px}.page-nav a{white-space:nowrap}.sidebar{position:fixed;top:0;left:0;bottom:calc(var(--toolbar-height) + env(safe-area-inset-bottom,0px));z-index:60;width:300px;max-width:95vw;overflow-y:auto;padding:20px;background:var(--panel);border-right:1px solid var(--border);box-shadow:8px 0 24px #352f2415}.reader-settings{display:grid;gap:8px;padding-bottom:18px;margin-bottom:18px;border-bottom:1px solid var(--border)}select,input[type=search]{width:100%;border:1px solid var(--border);border-radius:6px;background:white;padding:9px;color:var(--text)}.checkbox-label{display:flex;gap:10px;align-items:center}.book-menu{margin:14px 0}.book-label{width:100%;padding:12px 0;text-align:left;font-weight:650;color:var(--text);border:0;background:none}.chapter-list{padding:0 0 8px 12px}.chapter-link{display:block;padding:8px;border-radius:5px;text-decoration:none}.chapter-link:hover,.chapter-link[aria-current]{background:#e4eadd}.reader{width:min(100% - 32px,1400px);margin:auto;padding:18px 0 42px}.page-heading{font-size:clamp(20px,3vw,28px);margin:0 0 10px}.page-error{min-height:24px;color:var(--muted);margin:8px 0 14px;overflow-wrap:anywhere}.retry-audio{margin-top:12px}.image-container{position:relative;width:fit-content;max-width:100%;margin:auto;background:white}#word-image{display:block;max-width:100%;height:auto}map area{cursor:pointer}#translation-popup{display:none;position:absolute;z-index:10;max-width:min(300px,calc(100vw - 48px));white-space:normal;overflow-wrap:anywhere;pointer-events:none;padding:9px 12px;background:#fff9da;border:1px solid #cdbb7e;border-radius:8px;box-shadow:0 4px 16px #211a1520}.area-dynamic-border{display:none;position:absolute;pointer-events:none;border:2px dashed #ff0000;box-sizing:border-box}.show-borders .area-dynamic-border{display:block}.area-dynamic-border.circle{border-radius:50%}.word-list{margin-top:24px;padding:14px;background:var(--panel);border:1px solid var(--border);border-radius:10px}.word-list summary{cursor:pointer;font-weight:600}.word-buttons{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:10px;margin-top:14px}.word-button{min-height:55px;padding:10px;text-align:left;border:1px solid var(--border);border-radius:7px;background:white;color:var(--text)}.word-button:hover{background:#f3f5ed}.word-translation{display:block;color:var(--green);font-size:14px;margin-top:3px}@media(max-width:480px){:root{--toolbar-height:80px}.reader-toolbar{gap:8px;padding:8px 8px calc(8px + env(safe-area-inset-bottom,0px))}.home-link{font-size:14px}.page-nav{gap:10px;font-size:13px}.home-link{max-width:100px;overflow-wrap:anywhere}.page-nav a{white-space:normal;min-width:48px}.menu-toggle{padding:7px;font-size:14px}.reader{width:calc(100% - 20px)}.word-buttons{grid-template-columns:1fr 1fr}}@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important}}