:root{font-family:"Hiragino Kaku Gothic ProN","Yu Gothic",sans-serif;color:#273c33;background:#faf9f5;font-size:15px}*{box-sizing:border-box}body{margin:0}header{display:flex;align-items:center;gap:20px;padding:24px 5vw;border-bottom:1px solid #dce1d4}a{color:inherit}.brand{text-decoration:none;font-weight:800;font-size:24px}header span{font-size:12px;color:#79836e}button,input{font:inherit}button,.book-link{cursor:pointer}header button{margin-left:auto}main{max-width:1040px;margin:75px auto;padding:0 28px;min-height:55vh}h1{font-size:clamp(28px,4vw,44px);letter-spacing:.02em;font-weight:650;line-height:1.5;margin:15px 0 20px}.eyebrow{letter-spacing:.15em;font-size:11px;color:#78866f}p{line-height:1.9;color:#65705d}.login{max-width:450px;margin-top:36px}label{display:block;margin:18px 0 8px;font-size:13px}input{display:block;width:100%;border:1px solid #d1d8c8;background:#fffefa;padding:15px;border-radius:8px;color:inherit}button{border:1px solid #d1d8c8;background:transparent;color:inherit;padding:12px 18px;border-radius:8px}.primary{background:#344e3f;color:white;border-color:#344e3f}.login button{width:100%;margin-top:16px}button:disabled{opacity:.5;cursor:wait}.actions{display:flex;gap:12px;flex-wrap:wrap;align-items:center;margin:25px 0 40px}.books{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:20px}.book-link{display:flex;flex-direction:column;min-height:200px;padding:30px;text-decoration:none;background:#fff;border:1px solid #e1e4d8;border-radius:8px;box-shadow:0 4px 15px #233b2905}.book-link:hover{border-color:#73927a}.book-link h2{font-size:22px;line-height:1.6}.book-link small{margin-top:auto;color:#7b866f}footer{padding:30px 5vw;font-size:12px;color:#818775;line-height:1.8}#message{padding:15px 0;white-space:pre-wrap}#message.error{color:#9b3d2e}dialog{border:1px solid #d1d8c8;border-radius:14px;max-width:600px;width:90%;padding:30px;background:#faf9f5}dialog::backdrop{background:#17261d55}.restore-summary{border-top:1px solid #d1d8c8;border-bottom:1px solid #d1d8c8;padding:12px 0}.cloud-note{font-size:12px;padding:16px;line-height:1.8}.empty{padding:42px 0;border-top:1px solid #ddd}a:focus-visible,button:focus-visible{outline:3px solid #83a38f;outline-offset:3px}