:root{color:#1d1d1f;font-synthesis:none;--blue:#007aff;--muted:#737378;--line:#e5e5ea;background:#fff;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Microsoft YaHei,sans-serif}*{box-sizing:border-box}body{margin:0}button{font:inherit;cursor:pointer;touch-action:manipulation;border:0}button:disabled{cursor:wait;opacity:.55}button:focus-visible{outline-offset:4px;outline:3px solid #007aff}button.primary{background:var(--blue);color:#fff;border-radius:12px;min-height:44px;padding:12px 20px;font-weight:600}button.primary:hover{background:#0062cc}.library{max-width:860px;min-height:100svh;padding:0 max(32px,env(safe-area-inset-right)) 0 max(32px,env(safe-area-inset-left));flex-direction:column;margin:0 auto;display:flex}.masthead{min-height:88px;padding-top:env(safe-area-inset-top);justify-content:space-between;align-items:center;gap:20px;font-size:17px;font-weight:600;display:flex}.import-button{color:var(--blue);white-space:nowrap;background:0 0;align-items:center;gap:7px;min-height:44px;padding:12px 0 12px 12px;font-size:16px;font-weight:400;display:inline-flex}.import-button:before{content:"";background:linear-gradient(currentColor,currentColor) 50%/16px 1.5px no-repeat,linear-gradient(currentColor,currentColor) 50%/1.5px 16px no-repeat;width:16px;height:16px}.library-heading{padding:26px 0 24px}h1{letter-spacing:-.04em;margin:0;font-size:34px;font-weight:700;line-height:1.3}.books{padding-top:4px}.empty{text-align:center;place-items:center;min-height:220px;padding:24px;display:grid}.empty h2{color:var(--muted);margin:0;font-size:17px;font-weight:400}.library-footer{padding:64px 0 max(28px,env(safe-area-inset-bottom));color:var(--muted);text-align:center;margin-top:auto;font-size:12px}[hidden]{display:none!important}.notice{color:var(--muted);overflow-wrap:anywhere;margin:0;padding:0 0 20px;font-size:14px;line-height:1.6}.is-error{color:#b4232c}.book-card{grid-template-columns:minmax(0,1fr) auto;gap:7px 24px;min-width:0;padding:26px 0;display:grid}.book-card+.book-card{border-top:1px solid var(--line)}.book-name{overflow-wrap:anywhere;letter-spacing:-.025em;margin:0;font-size:20px;font-weight:600;line-height:1.45}.bookmark-summary{color:var(--muted);grid-column:1;margin:0;font-size:14px;line-height:1.5}.bookmark-summary.is-error{color:#b4232c}.book-actions{flex-direction:column;grid-area:1/2/3;align-self:start;align-items:flex-end;display:flex}.resume-button,.start-button,.text-button{color:var(--blue);white-space:nowrap;background:0 0;justify-content:flex-end;align-items:center;gap:8px;min-height:44px;padding:10px 0;font-size:15px;display:inline-flex}.resume-button{margin-top:-10px}.resume-button:after{content:"";border-top:1.5px solid;border-right:1.5px solid;width:7px;height:7px;margin-right:2px;transform:rotate(45deg)}.start-button{margin-top:-10px}.text-button{color:var(--muted);padding:8px 0;font-size:12px}.text-button:hover{color:var(--blue)}.reader{background:#fafafa;flex-direction:column;height:100dvh;display:flex;overflow:hidden}.reader-header{padding:8px max(20px,env(safe-area-inset-right)) 8px max(20px,env(safe-area-inset-left));padding-top:max(8px,env(safe-area-inset-top));background:#fff;flex:none;grid-template-columns:68px minmax(0,1fr) 68px;align-items:center;gap:8px;min-height:60px;display:grid}.back-button{color:var(--blue);white-space:nowrap;background:0 0;justify-self:start;align-items:center;gap:7px;min-height:44px;padding:10px 0;font-size:16px;display:inline-flex}.back-button:before{content:"";border-bottom:2px solid;border-left:2px solid;width:10px;height:10px;margin-left:3px;transform:rotate(45deg)}.reader-title{text-overflow:ellipsis;white-space:nowrap;text-align:center;min-width:0;font-size:14px;font-weight:600;overflow:hidden}.reader-viewport{overscroll-behavior-y:contain;overflow-anchor:none;-webkit-overflow-scrolling:touch;scroll-behavior:auto;flex:1;min-height:0;padding:12px 12px 0;position:relative;overflow:auto}.pdf-page{contain:layout paint;background:#fff;width:100%;max-width:860px;margin:0 auto 16px;position:relative}.pdf-page canvas{width:100%;height:100%;display:block}.page-placeholder{color:var(--muted);place-items:center;font-size:14px;display:grid;position:absolute;inset:0}.is-rendered .page-placeholder{display:none}.page-error{color:#b4232c;background:#fff;width:100%;padding:24px;font-size:16px;position:absolute;inset:0}.reader-tail{pointer-events:none}.reader-toolbar{min-height:70px;padding:12px max(24px,env(safe-area-inset-right)) max(12px,env(safe-area-inset-bottom)) max(24px,env(safe-area-inset-left));border-top:1px solid var(--line);background:#fff;flex:none;justify-content:space-between;align-items:center;gap:16px;display:flex}.reader-position{flex-direction:column;gap:4px;min-width:0;display:flex}.page-counter{font-variant-numeric:tabular-nums;color:var(--muted);font-size:16px}.save-feedback{color:var(--muted);overflow-wrap:anywhere;font-size:12px;line-height:1.5}.save-feedback:empty{display:none}.save-feedback.is-error{color:#b4232c}.save-button{flex-shrink:0;font-size:14px}@media (width<=600px){.library{padding-right:max(22px,env(safe-area-inset-right));padding-left:max(22px,env(safe-area-inset-left))}.masthead{min-height:76px;font-size:16px}.library-heading{padding:26px 0 22px}h1{font-size:32px}.book-card{column-gap:16px;padding:24px 0}.book-name{font-size:18px}.bookmark-summary{font-size:13px}.resume-button,.start-button{font-size:14px}.reader-toolbar{padding:12px max(20px,env(safe-area-inset-right)) max(12px,env(safe-area-inset-bottom)) max(20px,env(safe-area-inset-left))}}@media (width<=350px){.library{padding-right:max(16px,env(safe-area-inset-right));padding-left:max(16px,env(safe-area-inset-left))}.book-card{column-gap:12px}.book-name{font-size:17px}.reader-header{padding-right:max(16px,env(safe-area-inset-right));padding-left:max(16px,env(safe-area-inset-left));grid-template-columns:56px minmax(0,1fr) 56px}.reader-toolbar{flex-wrap:wrap;gap:12px}.reader-toolbar .primary{padding:12px 16px}}