:root{--ink:#172033;--muted:#667085;--line:#d9e0ea;--blue:#0866ff;--blue-dark:#064bad;--blue-soft:#eaf2ff;--bg:#f5f7fb;--card:#fff;--gold:#f8b400}*{box-sizing:border-box}html{background:var(--bg)}body{background:var(--bg);color:var(--ink);margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Noto Sans JP,sans-serif;font-size:16px}button,input,select{font:inherit}button,a,input,select{touch-action:manipulation}.hero-header{color:#fff;background:linear-gradient(125deg,#071a3d,#0b4ea2 66%,#0a74da);flex-wrap:wrap;justify-content:space-between;align-items:end;gap:24px;padding:28px clamp(18px,4vw,56px);display:flex}.eyebrow{color:#9fd0ff;letter-spacing:.12em;margin:0;font-size:.75rem;font-weight:850}.hero-header h1{margin:.45rem 0;font-size:clamp(1.75rem,4vw,2.9rem);line-height:1.1}.hero-copy{color:#d4e7ff;margin:0}.meter{-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);background:#ffffff15;border:1px solid #ffffff35;border-radius:18px;min-width:270px;padding:15px 18px}.meter>div{justify-content:space-between;align-items:baseline;display:flex}.meter strong{font-size:2.2rem}.meter small{font-size:.9rem}.meter>i{background:#ffffff30;border-radius:99px;height:8px;margin-top:8px;display:block;overflow:hidden}.meter>i>b{border-radius:inherit;background:linear-gradient(90deg,#ffd45b,#ffad0a);height:100%;transition:width .25s;display:block}.account-bar{color:#e6f1ff;background:#081d40;align-items:center;gap:14px;padding:10px clamp(14px,3vw,40px);font-size:.875rem;display:flex}.link-button{color:#fff;cursor:pointer;background:0 0;border:0;margin-left:auto;padding:0;text-decoration:underline}.role-badge{border-radius:999px;padding:4px 9px;font-weight:800;display:inline-block}.role-badge.editor{color:#382600;background:#f8b400}.role-badge.viewer{color:#07356d;background:#d4e7ff}.save-status{color:#bcd7fb}.toolbar{z-index:10;border-bottom:1px solid var(--line);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);background:#fffffff2;grid-template-columns:minmax(220px,1.6fr) minmax(180px,1fr) auto auto auto;gap:10px;padding:12px clamp(12px,3vw,40px);display:grid;position:sticky;top:0;box-shadow:0 3px 18px #1720330d}input,select,.button{min-height:44px;color:var(--ink);background:#fff;border:1px solid #cbd5e1;border-radius:10px;padding:10px 12px}input:focus,select:focus{border-color:var(--blue);outline:3px solid #0866ff22}.button{cursor:pointer;font-weight:750}.button:hover{border-color:#94a3b8}.button:disabled{cursor:wait;opacity:.7}.button.primary,.button.active{border-color:var(--blue);background:var(--blue);color:#fff}.add-panel{background:#eef5ff;border-bottom:1px solid #bdd3f3;padding:16px clamp(12px,3vw,40px)}.add-panel form{grid-template-columns:1.4fr 1fr 1.4fr 1.4fr 1fr auto;align-items:end;gap:10px;max-width:1500px;margin:auto;display:grid}.add-panel label{color:#334155;flex-direction:column;gap:5px;font-size:.82rem;font-weight:700;display:flex}.add-panel input{width:100%}.content{max-width:1500px;margin:auto;padding:18px clamp(12px,3vw,40px) 80px}.summary{color:var(--muted);justify-content:space-between;gap:10px;margin-bottom:16px;font-size:.875rem;display:flex}.book-grid{grid-template-columns:repeat(auto-fill,minmax(205px,1fr));gap:14px;display:grid}.book-card{background:var(--card);border:2px solid #0000;border-radius:16px;flex-direction:column;min-height:390px;display:flex;position:relative;overflow:hidden;box-shadow:0 5px 18px #17203312}.book-card.selected{border-color:var(--blue);box-shadow:0 7px 22px #0866ff28}.cover{color:#94a3b8;background:linear-gradient(145deg,#eef2f7,#fff);border-bottom:1px solid #edf0f4;place-items:center;height:230px;font-size:.75rem;display:grid;position:relative}.cover img{object-fit:contain;width:100%;height:100%;padding:10px}.cover em{color:#fff;background:#101828e8;border-radius:999px;padding:5px 9px;font-size:.75rem;font-style:normal;font-weight:800;position:absolute;top:9px;left:9px}.sequence{background:var(--blue);color:#fff;border-radius:50%;place-items:center;width:34px;height:34px;display:grid;position:absolute;top:9px;right:9px;box-shadow:0 2px 8px #0003}.book-body{flex-direction:column;flex:1;gap:8px;padding:13px;display:flex}.book-body h2{margin:0;font-size:.95rem;line-height:1.42}.book-body>p{min-height:17px;color:var(--muted);margin:0;font-size:.78rem}.tags{flex-wrap:wrap;gap:5px;display:flex}.tags span{color:#475467;background:#f1f5f9;border-radius:6px;padding:3px 5px;font-size:.68rem}.card-actions{align-items:center;gap:8px;margin-top:auto;display:flex}.card-actions .button,.view-state{flex:1}.card-actions a{color:#0759c7;padding:10px 4px;font-size:.78rem}.view-state{text-align:center;background:#f8fafc;border:1px solid #d5dbe5;border-radius:10px;padding:10px;font-size:.84rem;font-weight:750;display:block}.selected-state{background:var(--blue-soft);color:var(--blue-dark);border-color:#b7d0ff}.more{min-width:220px;margin:24px auto;display:block}.empty{text-align:center;color:var(--muted);padding:70px 20px}.mobile-bar{display:none}.signin-shell{background:linear-gradient(135deg,#071a3d,#0b4ea2);place-items:center;min-height:100vh;padding:24px;display:grid}.signin-card{background:#fff;border-radius:20px;max-width:520px;padding:32px;box-shadow:0 20px 60px #0004}.signin-card h1{margin:.5rem 0}.signin-card p:last-child{color:var(--muted);line-height:1.7}@media (max-width:1000px){.toolbar{grid-template-columns:1fr 1fr auto}.toolbar input{grid-column:1/-1}.add-panel form{grid-template-columns:1fr 1fr}.add-panel form label:first-child{grid-column:1/-1}.book-grid{grid-template-columns:repeat(auto-fill,minmax(170px,1fr))}}@media (max-width:700px){body{padding-bottom:76px}.hero-header{padding:18px 14px;display:block}.hero-header h1{font-size:1.55rem}.hero-copy{font-size:.84rem}.meter{border-radius:12px;min-width:0;margin-top:12px;padding:9px 12px}.meter strong{font-size:1.6rem}.account-bar{flex-wrap:wrap;padding:9px 12px}.save-status{margin-left:auto}.account-bar a{text-align:right;width:100%;margin:0}.toolbar{grid-template-columns:1fr 1fr;padding:10px;position:static}.toolbar input,.toolbar select{grid-column:1/-1}.toolbar .primary{display:none}.add-panel form{grid-template-columns:1fr}.add-panel form label:first-child{grid-column:auto}.content{padding:12px 10px 28px}.book-grid{flex-direction:column;gap:9px;display:flex}.book-card{border-radius:13px;grid-template-columns:112px minmax(0,1fr);min-height:168px;display:grid}.cover{border:0;border-right:1px solid #edf0f4;height:100%;min-height:168px}.cover img{padding:7px}.book-body{gap:6px;min-width:0;padding:10px}.book-body h2{font-size:.88rem;line-height:1.35}.tags span:nth-child(n+4){display:none}.mobile-bar{z-index:25;padding:9px 10px calc(9px + env(safe-area-inset-bottom));border-top:1px solid var(--line);-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);background:#fffffff5;grid-template-columns:auto 1fr 1.3fr;align-items:center;gap:7px;display:grid;position:fixed;bottom:0;left:0;right:0;box-shadow:0 -5px 20px #17203318}.mobile-bar strong{white-space:nowrap;color:var(--blue);font-size:1.25rem}.mobile-bar small{color:var(--ink);font-size:.75rem}}