:root{--bg: #1f2421;--surface: #2a312c;--surface-2: #333b35;--primary: #4caf50;--primary-d: #2e7d32;--danger: #c0473b;--text: #eef2ee;--muted: #9fb0a3;--border: #3c463e;--radius: 12px;font-size:18px}*{box-sizing:border-box}html,body{margin:0;padding:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;-webkit-text-size-adjust:100%;overscroll-behavior:none;overflow-x:hidden;-webkit-tap-highlight-color:transparent}#root{min-height:100vh}.app-shell{max-width:720px;margin:0 auto;padding-bottom:calc(80px + env(safe-area-inset-bottom))}.content{padding:16px}.page{display:flex;flex-direction:column;gap:14px}.page-title{margin:4px 0 0;font-size:1.6rem}.center-screen{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:24px}.center{text-align:center}.bottom-nav{position:fixed;bottom:0;left:0;right:0;display:flex;justify-content:space-around;background:var(--surface);border-top:1px solid var(--border);padding:8px 4px calc(8px + env(safe-area-inset-bottom));z-index:50}.bottom-nav a{display:flex;flex-direction:column;align-items:center;gap:2px;text-decoration:none;color:var(--muted);font-size:.72rem;padding:4px 10px;border-radius:10px;min-width:64px}.bottom-nav a.active{color:var(--text);background:var(--surface-2)}.nav-icon{font-size:1.4rem}.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:16px}.card h3{margin:0 0 12px}label{display:flex;flex-direction:column;gap:6px;font-size:.9rem;color:var(--muted)}input,select,textarea{width:100%;padding:12px;font-size:1rem;border-radius:10px;border:1px solid var(--border);background:var(--surface-2);color:var(--text);font-family:inherit}textarea{resize:vertical}input:focus,select:focus,textarea:focus{outline:2px solid var(--primary);border-color:var(--primary)}.grid2{display:grid;grid-template-columns:1fr 1fr;gap:12px}.span2{grid-column:1 / -1}.btn{-webkit-appearance:none;-moz-appearance:none;appearance:none;border:1px solid var(--border);background:var(--surface-2);color:var(--text);font-size:1rem;font-weight:600;padding:12px 16px;border-radius:10px;cursor:pointer;display:inline-flex;align-items:center;justify-content:center;gap:6px;min-height:48px;touch-action:manipulation}.btn:disabled{opacity:.45;cursor:not-allowed}.btn.primary{background:var(--primary-d);border-color:var(--primary-d)}.btn.danger{background:transparent;border-color:var(--danger);color:#f1a59c}.btn.big{font-size:1.15rem;padding:16px;width:100%}.btn-row{display:flex;flex-wrap:wrap;gap:10px}.btn-row .btn{flex:1 1 auto}.finalize{margin-top:4px}.board-wrap{display:flex;justify-content:center;width:100%}.status-line{text-align:center;min-height:24px}.move-input-row{display:flex;gap:8px}.move-input-row input{flex:1}.moves-list{display:flex;flex-wrap:wrap;gap:4px 12px;font-variant-numeric:tabular-nums;max-height:160px;overflow-y:auto}.move-pair b{color:var(--muted)}.move{cursor:pointer;padding:1px 4px;border-radius:5px}.move.cur{background:var(--primary-d);color:#fff;font-weight:700}.study-head{display:flex;align-items:center;gap:12px}.study-head .page-title{margin:0}.speed-select{flex:0 0 auto;width:auto;font-weight:600;cursor:pointer}.meta-form summary{cursor:pointer;font-weight:600;margin-bottom:12px}.badge{display:inline-block;padding:4px 12px;border-radius:999px;font-weight:700;font-size:.9rem}.badge.win{background:var(--primary-d)}.badge.draw{background:#6b6b3a}.error{background:#4a2420;color:#f1a59c;padding:10px 12px;border-radius:10px;border:1px solid var(--danger)}.error-inline{color:#f1a59c}.success{background:#214a28;color:#b6e7bd;padding:10px 12px;border-radius:10px;border:1px solid var(--primary-d)}.muted{color:var(--muted)}.small{font-size:.82rem}code{background:var(--surface-2);padding:2px 6px;border-radius:6px;font-size:.85em}.login-card{width:100%;max-width:380px;display:flex;flex-direction:column;gap:14px;text-align:center}.login-logo{font-size:3.5rem}.login-card h1{margin:0;font-size:1.5rem}.search{font-size:1.05rem}.collection-row{flex-direction:row;align-items:center;gap:10px;color:var(--text);font-weight:600}.collection-row select{flex:1}.game-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:10px}.game-item{padding:0;overflow:hidden}.game-head{width:100%;padding:14px 16px;cursor:pointer;display:grid;grid-template-columns:1fr auto auto;grid-template-areas:"players result chevron" "sub result chevron";gap:2px 10px;align-items:center}.game-head.as-button{background:none;border:none;color:inherit;font:inherit;text-align:left}.go-chevron{grid-area:chevron;font-size:1.7rem;color:var(--muted);line-height:1}.game-players{grid-area:players;font-size:1.05rem}.vs{color:var(--muted)}.game-sub{grid-area:sub;font-size:.82rem}.result-tag{grid-area:result;font-weight:700;background:var(--surface-2);padding:4px 10px;border-radius:8px;white-space:nowrap}.game-detail{padding:0 16px 16px;border-top:1px solid var(--border)}.pgn-view{white-space:pre-wrap;word-break:break-word;background:var(--bg);padding:12px;border-radius:8px;font-size:.82rem;max-height:240px;overflow:auto}.modal-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;background:#0009;display:flex;align-items:center;justify-content:center;padding:16px;z-index:100}.modal{width:100%;max-width:520px;max-height:90vh;overflow-y:auto;display:flex;flex-direction:column;gap:14px}.modal h3{margin:0}.analyze-wrap{display:flex;gap:10px;align-items:stretch;justify-content:center}.eval-bar{position:relative;width:26px;background:#2b2b2b;border-radius:6px;overflow:hidden;border:1px solid var(--border);flex-shrink:0}.eval-white{position:absolute;bottom:0;left:0;right:0;background:#f0f0f0;transition:height .3s ease}.eval-num{position:absolute;top:4px;left:0;right:0;text-align:center;font-size:.6rem;font-weight:700;color:#111;mix-blend-mode:difference;filter:invert(1)}.analyze-info{display:flex;flex-direction:column;gap:6px}.eval-row{display:flex;justify-content:space-between}.pv{font-size:.8rem;word-break:break-word}.depth-row{flex-direction:row;align-items:center;gap:12px;color:var(--text)}.depth-row input[type=range]{flex:1}.follow-row{flex-direction:row;align-items:center;gap:10px;color:var(--text);font-size:.9rem}.follow-row input[type=checkbox]{width:22px;height:22px;flex:0 0 auto}.study-board-tap{position:relative;touch-action:manipulation}.tap-zone{position:absolute;top:0;bottom:0;width:50%;background:transparent;border:none;margin:0;padding:0;min-height:0;cursor:pointer;z-index:5;-webkit-tap-highlight-color:transparent;touch-action:manipulation}.tap-left{left:0}.tap-right{right:0}.tap-hint{margin-top:-4px}.move{touch-action:manipulation}.spinner{width:36px;height:36px;border:4px solid var(--border);border-top-color:var(--primary);border-radius:50%;animation:spin .8s linear infinite;margin:24px auto}@keyframes spin{to{transform:rotate(360deg)}}@media (max-width: 560px){.grid2{grid-template-columns:1fr}}@media (max-width: 360px){:root{font-size:16px}}