:root{--primary: #2563eb;--border: #d6dae1;--card: #fff;--bg: #f7f8fa;--text: #111;--muted: #667085;font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif;color:var(--text);background:var(--bg)}*{box-sizing:border-box}body{margin:0}a{color:inherit}[hidden]{display:none!important}[tabindex="-1"]:focus{outline:none}.topbar{display:flex;align-items:center;gap:14px;flex-wrap:wrap;padding:10px 14px;border-bottom:1px solid var(--border);background:var(--card)}.brand{font-weight:700;text-decoration:none;font-size:17px}#nav{display:flex;gap:4px;flex-wrap:wrap}#nav a{text-decoration:none;font-size:14px;color:var(--muted);padding:6px 10px;border-radius:8px}#nav a:hover{background:var(--bg);color:var(--text)}#lang-toggle{margin-left:auto}.lang-switch{text-decoration:none;font-size:13px;font-weight:700;color:var(--muted);border:1px solid var(--border);border-radius:8px;padding:6px 10px}.lang-switch:hover{border-color:var(--primary);color:var(--text)}.wrap{max-width:860px;margin:0 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var(--border);border-radius:14px;background:var(--card)}.prompt .romaji{font-size:30px;font-weight:700}.prompt .meaning{font-size:26px;font-weight:650}.jpx{display:inline-flex;flex-direction:column;align-items:center;gap:3px;line-height:1.15}.jpx-romaji{font-size:1.2em;font-weight:700}.jpx-sub{display:flex;gap:10px;font-size:.6em;color:var(--muted);font-weight:500}.prompt .jpx{font-size:34px}.choice .jpx{font-size:19px}.prompt-video{padding:0;overflow:hidden}.clip{width:100%;max-height:340px;border-radius:12px;background:#000;display:block}.choices{display:grid;grid-template-columns:1fr 1fr;gap:12px}.choice{display:flex;align-items:center;justify-content:center;text-align:center;min-height:60px;padding:14px;border:2px solid var(--border);border-radius:12px;background:var(--card);color:var(--text);font-size:17px;font-weight:600;cursor:pointer;font-family:inherit}.choice:hover:not(:disabled){border-color:var(--primary)}.choice:disabled{cursor:default;opacity:.95}.choice.is-correct{border-color:#16a34a;background:#f0fdf4}.choice.is-wrong{border-color:#dc2626;background:#fef2f2}.choice-video{padding:0;overflow:hidden;min-height:0}.feedback{display:flex;flex-direction:column;gap:10px;align-items:flex-start;padding:16px;border:1px solid var(--border);border-radius:12px;background:var(--card)}.feedback .verdict{margin:0;font-size:18px;font-weight:700}.feedback .verdict.ok{color:#16a34a}.feedback .verdict.no{color:#dc2626}.feedback .answer{margin:0;font-size:16px}.feedback .romaji-note{color:var(--muted)}.mention{color:var(--primary);text-decoration:none;font-weight:600}.mention:hover{text-decoration:underline}.watch{color:var(--muted);text-decoration:none;font-size:14px}.btn{align-self:stretch;min-height:54px;padding:12px 18px;border:none;border-radius:10px;background:var(--primary);color:#fff;font-size:17px;font-weight:650;cursor:pointer;font-family:inherit}.btn.retry{background:var(--card);color:var(--text);border:1px solid var(--border)}.game-card{display:flex;flex-direction:column;gap:5px;justify-content:center;text-align:left;min-height:88px;padding:15px 16px;border:2px solid var(--border);border-radius:12px;background:var(--card);text-decoration:none}.game-card:hover{border-color:var(--primary)}.game-card-title{font-size:16px;font-weight:650}.game-card-desc{font-size:13px;line-height:1.35}.page-sub{margin:-8px 0 16px}.play-menu{position:relative}.play-menu summary{list-style:none;cursor:pointer;padding:6px 10px;border-radius:8px;font-size:14px;color:var(--muted)}.play-menu summary::-webkit-details-marker{display:none}.play-menu summary:hover,.play-menu[open] summary{background:var(--bg);color:var(--text)}.play-menu-list{position:absolute;z-index:20;top:100%;left:0;min-width:210px;margin-top:4px;background:var(--card);border:1px solid var(--border);border-radius:10px;box-shadow:0 8px 24px #0002;padding:6px;display:flex;flex-direction:column}.play-menu-list a{padding:9px 10px;border-radius:7px;text-decoration:none;color:var(--text);font-size:14px}.play-menu-list a:hover{background:var(--bg)}.set-menu{position:relative}.set-menu summary{list-style:none;cursor:pointer;display:inline-flex;align-items:center;gap:7px;padding:6px 10px;border-radius:8px;border:1px solid var(--border);font-size:13px;font-weight:600;color:var(--text);max-width:200px}.set-menu summary::-webkit-details-marker{display:none}.set-menu summary:hover,.set-menu[open] 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vc-spin{to{transform:rotate(360deg)}}.vc-arrow{position:absolute;top:50%;transform:translateY(-50%);z-index:2;width:36px;height:44px;border:none;border-radius:8px;cursor:pointer;background:#0006;color:#fff;font-size:24px;line-height:1;font-family:inherit;display:flex;align-items:center;justify-content:center}.vc-arrow:hover{background:#000a}.vc-prev{left:4px}.vc-next{right:4px}.vc-count{position:absolute;bottom:6px;right:6px;z-index:2;font-size:11px;font-weight:600;color:#fff;background:#00000080;padding:1px 7px;border-radius:999px}.back-link{display:inline-block;margin-bottom:14px;text-decoration:none}.throw-head{margin-bottom:8px}.throw-jp{font-size:18px;color:var(--muted);margin:2px 0 8px}.throw-meaning{font-size:19px;font-weight:600;margin:4px 0}.throw-section{margin:22px 0}.throw-section h3{font-size:15px;color:var(--muted);margin:0 0 8px;text-transform:uppercase;letter-spacing:.03em}.link-row{display:flex;flex-wrap:wrap;gap:4px 6px;align-items:center;font-size:16px}.link-row 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8px;text-transform:uppercase;letter-spacing:.03em}.prog-list{display:flex;flex-direction:column;gap:10px}.prog-row{display:grid;grid-template-columns:minmax(110px,1.2fr) 2fr auto;gap:10px 12px;align-items:center;padding:4px 2px}.prog-name{font-weight:600}.prog-name a{color:var(--primary);text-decoration:none}.prog-name a:hover{text-decoration:underline}.prog-bar{height:10px;border-radius:6px;background:var(--border);overflow:hidden}.prog-fill{height:100%;border-radius:6px;transition:width .3s}.prog-meta{font-size:13px;white-space:nowrap}.band-new .prog-fill{background:#9ca3af}.band-learning .prog-fill{background:#ef4444}.band-familiar .prog-fill{background:#f59e0b}.band-strong .prog-fill{background:#22c55e}.band-mastered .prog-fill{background:#15803d}.prose{max-width:640px;line-height:1.6}.prose h3{font-size:16px;margin:20px 0 6px}.prose p{margin:8px 0}.set-list{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-bottom:8px}.set-card{display:flex;flex-direction:column;gap:4px;padding:14px;border:1px solid var(--border);border-radius:12px;background:var(--card);text-decoration:none;color:inherit}.set-card:hover{border-color:var(--primary)}.set-name{font-weight:650}.set-count{font-size:13px}.prog-controls .study{align-self:flex-start;min-width:200px}.hint{font-size:12px;color:var(--muted)}.hint-link{font-size:12px;text-decoration:none;color:var(--primary)}.device-id{font-size:12px;margin-top:18px}.device-id code{background:var(--card);padding:1px 6px;border-radius:5px;border:1px solid var(--border)}.editor-head{display:flex;align-items:baseline;justify-content:space-between;margin:18px 0 8px}.editor-head h3{font-size:15px;margin:0}.pick-list{display:flex;flex-direction:column;max-height:52vh;overflow-y:auto;border:1px solid var(--border);border-radius:12px;background:var(--card)}.pick-row{display:flex;align-items:center;gap:10px;padding:10px 12px;border-bottom:1px solid var(--border);cursor:pointer}.pick-row:last-child{border-bottom:none}.pick-row input{width:20px;height:20px;flex:none;accent-color:var(--primary)}.pick-name{font-weight:600}.editor-actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:16px;align-items:center}.editor-actions .btn{align-self:auto;min-height:48px;flex:0 0 auto;min-width:140px;text-align:center}.btn.ghost{background:var(--card);color:var(--text);border:1px solid var(--border);text-decoration:none;display:inline-flex;align-items:center;justify-content:center}.btn.danger{background:var(--card);color:#dc2626;border:1px solid #dc2626}.btn.danger.armed{background:#dc2626;color:#fff}.form-error{color:#dc2626;font-size:14px;margin:10px 0 0}@media (max-width: 600px){.topbar{gap:8px}#nav a{padding:8px 9px}.game-grid,.choices{gap:8px}.choice{min-height:56px;font-size:16px}.prompt .jpx{font-size:30px}.prompt .romaji{font-size:26px}.throw-list.rich{grid-template-columns:1fr}.game-grid{grid-template-columns:1fr 1fr}.clip-strip{grid-template-columns:1fr}.prog-row{grid-template-columns:1fr auto}.prog-row .prog-bar{grid-column:1 / -1}.set-list{grid-template-columns:1fr}}