:root,:root[data-theme=white]{--paper: #FAFAF7;--ink: #1A1A1A;--muted: #6A6A6A;--watermark: rgba(0, 0, 0, .07);--accent: #8b7355;--border: #e0ddd8;--nav-bg: #FAFAF7}@media(prefers-color-scheme:dark){:root:not([data-theme=white]):not([data-theme=pink]){--paper: #121212;--ink: #EAEAEA;--muted: #AAAAAA;--watermark: rgba(255, 255, 255, .08);--accent: #c9a96e;--border: #333333;--nav-bg: #121212}}:root[data-theme=black]{--paper: #121212;--ink: #EAEAEA;--muted: #AAAAAA;--watermark: rgba(255, 255, 255, .08);--accent: #c9a96e;--border: #333333;--nav-bg: #121212}:root[data-theme=pink]{--paper: #FBF1F3;--ink: #3A2A2E;--muted: #7A5F66;--watermark: rgba(58, 42, 46, .07);--accent: #d4838f;--border: #f0d8d8;--nav-bg: #FBF1F3}:root{--serif: "Songti TC", "Noto Serif TC", "Noto Serif CJK TC", "PMingLiU", Georgia, serif;--kai: "Kaiti TC", "BiauKai", "DFKai-SB", "Noto Serif TC", serif}*{box-sizing:border-box;margin:0;padding:0}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:var(--paper);color:var(--ink);min-height:100dvh}.app{max-width:26.25rem;margin:0 auto;min-height:100dvh;display:flex;flex-direction:column}.book-page{flex:1;display:flex;flex-direction:column;padding:0 1.5rem}.book-calendar{padding:1.25rem 0 1rem}.calendar-date{font-size:.8125rem;color:var(--muted)}.calendar-detail{font-size:.75rem;color:var(--muted);margin-top:.125rem}.calendar-jieqi{color:var(--accent)}.book-article{flex:1}.book-entry-id{margin-bottom:.75rem}.entry-number{font-family:var(--serif);font-size:1.75rem;font-weight:300;color:var(--ink)}.entry-hashtag{font-family:var(--serif);font-size:1rem;color:var(--accent)}.book-title{font-family:var(--serif);font-size:1.75rem;font-weight:700;line-height:1.35;color:var(--ink);margin-bottom:.5rem}.book-title--status{font-weight:400;color:var(--muted)}.book-stem-zone{position:relative;min-height:min(11.25rem,90vw);display:flex;align-items:flex-start}.book-watermark{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);font-family:var(--kai);font-size:min(11.25rem,90vw);color:var(--watermark);pointer-events:none;line-height:1;-webkit-user-select:none;user-select:none}.book-stem-label{font-size:.8125rem;color:var(--muted);padding-top:.25rem}.book-body{font-family:var(--serif);font-size:1.0625rem;line-height:1.7;color:var(--ink);white-space:pre-line}.book-footer{padding:2rem 0 1rem;text-align:center;display:flex;flex-direction:column;align-items:center;gap:.125rem}.footer-brand-en{font-size:.9375rem;color:var(--muted);letter-spacing:.05em}.footer-brand-zh{font-size:.8125rem;color:var(--muted)}.app-nav{position:sticky;bottom:0;display:flex;background:var(--nav-bg);border-top:1px solid var(--border);padding:.75rem 0}.app-nav a{flex:1;text-align:center;text-decoration:none;color:var(--muted);font-size:.8rem;font-weight:500}.app-nav a.active{color:var(--accent)}.about-page{flex:1;padding:2rem 1.5rem}.about-page h1{font-size:1.125rem;margin-bottom:1rem}.about-page p{font-size:.95rem;line-height:1.8;color:var(--muted)}@media(min-width:768px){.app{max-width:35rem}.book-title{font-size:2rem}.book-body{font-size:1.125rem}}