:root{--bg: #f6f1e6;--paper: #fbf7ef;--text: #2d2a26;--muted: rgba(45,42,38,.65);--border: rgba(45,42,38,.14);--shadow: 0 10px 30px rgba(0,0,0,.08);--accent: #8b5a2b}*{box-sizing:border-box}html,body{height:100%}body{margin:0;font-family:ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial,PingFang SC,Noto Sans CJK SC,Microsoft YaHei,sans-serif;color:var(--text);background:radial-gradient(1200px 600px at 50% 0%,#fffdf7,var(--bg))}a{color:inherit}button{font:inherit}.page{min-height:100vh;display:flex;flex-direction:column}.homeHeader{padding:28px 16px 14px;text-align:center}.homeHeaderInner{width:100%;max-width:1120px;margin:0 auto;display:flex;flex-direction:column;align-items:center}.homeTitle{margin:0;font-size:26px;letter-spacing:.06em;font-weight:700}.homeSubtitle{margin-top:10px;font-size:14px;color:var(--muted)}.toolbar{margin:18px auto 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18px;text-align:center}.smallMuted{color:var(--muted);font-size:12px}.hint{text-align:center;padding:18px 0;color:var(--muted)}.hint.error{color:#b00020}.readerShell{position:relative;min-height:100vh;background:radial-gradient(1200px 600px at 50% 0%,#fffdf7,var(--bg))}.readerFrameWrap{position:fixed;top:0;right:0;bottom:0;left:0;padding:10px 0}.readerFrame{width:100vw;height:100vh;border:none;display:block;margin:0;background:transparent}.readerTop,.readerBottom{position:fixed;left:0;right:0;display:flex;align-items:center;justify-content:space-between;padding:10px 14px;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);background:#f8f2e8c7;border-bottom:1px solid var(--border);transform:translateY(-120%);transition:transform .18s ease;z-index:40}.readerBottom{bottom:0;top:auto;border-top:1px solid var(--border);border-bottom:none;transform:translateY(120%)}.readerTop.show,.readerBottom.show{transform:translateY(0)}.iconBtn{border:1px solid 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