:root{--bg: #f7f4ee;--surface: #ffffff;--surface-2: #f0ece4;--text: #22201c;--muted: #6f6a62;--border: #e3ddd2;--accent: #c8402e;--accent-ink: #ffffff;--ok: #2e7d4f;--ok-bg: #e5f3ea;--bad: #b3261e;--bad-bg: #fbe7e5;--hard: #b26a00;--easy: #1565c0;--radius: 14px;--shadow: 0 1px 2px rgba(40, 30, 10, .06), 0 4px 16px rgba(40, 30, 10, .05);--font: system-ui, -apple-system, "Segoe UI", Roboto, "Hiragino Sans", "Noto Sans JP", sans-serif;--font-ja: "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Noto Sans JP", "Yu Gothic", Meiryo, sans-serif;--font-mincho: "Hiragino Mincho ProN", "Yu Mincho", "Noto Serif JP", "Source Han Serif JP", serif;color-scheme:light dark}@media (prefers-color-scheme: dark){:root{--bg: #16161a;--surface: #1f1f24;--surface-2: #2a2a31;--text: #ece8e1;--muted: #a39e95;--border: #34343c;--accent: #ef6a54;--accent-ink: #1a0f0c;--ok: #6fcf97;--ok-bg: #1e3326;--bad: #ff8a80;--bad-bg: #3a2020;--hard: #ffb74d;--easy: #64b5f6;--shadow: none}}*{box-sizing:border-box}html{-webkit-text-size-adjust:100%}body{margin:0;background:var(--bg);color:var(--text);font:16px/1.55 var(--font);padding-bottom:calc(72px + env(safe-area-inset-bottom))}body.focus-mode{padding-bottom:24px}body.focus-mode .tabbar,body.focus-mode .topbar{display:none}[lang=ja]{font-family:var(--font-ja)}.mincho,.mincho [lang=ja],[lang=ja].mincho{font-family:var(--font-mincho)}a{color:var(--accent);text-decoration:none}h1{font-size:1.5rem;margin:.2em 0}h2{font-size:1.2rem}h3{font-size:.8rem;text-transform:uppercase;letter-spacing:.06em;color:var(--muted);margin:0 0 .4em}.muted{color:var(--muted)}.small{font-size:.85rem}.row{display:flex;align-items:center}.gap{gap:10px}.wrap{flex-wrap:wrap}.center{text-align:center}.center .row{justify-content:center}kbd{display:none}@media (hover: hover) and (pointer: fine){kbd{display:inline-block;font:.7rem var(--font);border:1px solid var(--border);border-radius:4px;padding:0 4px;color:var(--muted);margin-left:6px}}.container{max-width:760px;margin:0 auto;padding:12px 16px}.topbar{position:sticky;top:0;z-index:5;padding:calc(10px + env(safe-area-inset-top)) 16px 10px;background:color-mix(in srgb,var(--bg) 88%,transparent);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-bottom:1px solid var(--border)}.brand{font-weight:700;color:var(--text);font-size:1.05rem}.brand [lang=ja]{color:var(--accent);margin-right:4px}.tabbar{position:fixed;bottom:0;left:0;right:0;z-index:10;display:flex;justify-content:space-around;background:var(--surface);border-top:1px solid var(--border);padding:6px 0 calc(6px + env(safe-area-inset-bottom))}.tabbar a{position:relative;display:flex;flex-direction:column;align-items:center;gap:2px;color:var(--muted);font-size:.7rem;padding:4px 14px;border-radius:10px}.tabbar svg{width:24px;height:24px;fill:currentColor}.tabbar a.active{color:var(--accent)}.badge{position:absolute;top:0;right:6px;min-width:18px;height:18px;padding:0 5px;border-radius:9px;background:var(--accent);color:var(--accent-ink);font-size:.68rem;line-height:18px;text-align:center}.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:18px;box-shadow:var(--shadow);margin-bottom:14px}.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;min-height:44px;padding:0 16px;border-radius:12px;border:1px solid var(--border);background:var(--surface);color:var(--text);font:inherit;font-weight:600;cursor:pointer}.btn:hover{border-color:var(--muted)}.btn.primary{background:var(--accent);color:var(--accent-ink);border-color:var(--accent)}.btn.danger{color:var(--bad)}.btn.block{display:flex;width:100%}.btn.disabled{opacity:.45;pointer-events:none}.btn:disabled{opacity:.5;cursor:default}.small-btn{min-height:34px;font-size:.85rem;padding:0 12px}.icon-btn{display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;border:0;border-radius:50%;background:transparent;color:var(--muted);cursor:pointer;vertical-align:middle;padding:0}.icon-btn:hover{background:var(--surface-2);color:var(--accent)}.loading{display:flex;align-items:center;justify-content:center;gap:10px;padding:48px 0;color:var(--muted)}.spinner{width:18px;height:18px;border:2px solid var(--border);border-top-color:var(--accent);border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.bar{flex:1;height:8px;background:var(--surface-2);border-radius:4px;overflow:hidden}.bar>div{height:100%;background:var(--accent);border-radius:4px;transition:width .3s}.bar.thin{height:5px;margin-top:8px}.crumbs{font-size:.85rem;color:var(--muted);margin:4px 0 10px;display:flex;flex-wrap:wrap;gap:4px}.crumbs .sep{opacity:.5}.page-head{margin-bottom:16px}.page-head h1{color:var(--text)}.section-title{margin:22px 0 10px}.hero{display:grid;grid-template-columns:1fr auto;align-items:center;gap:14px}.hero-num{font-size:2.6rem;font-weight:800;line-height:1;color:var(--accent)}.hero-stats{grid-column:1 / -1;display:grid;grid-template-columns:repeat(3,1fr);border-top:1px solid var(--border);padding-top:12px;text-align:center}.hero-stats b{display:block;font-size:1.2rem}.hero-stats span{font-size:.78rem;color:var(--muted)}.book-list{display:grid;gap:12px}.book-card{display:block;background:var(--surface);border:1px solid var(--border);border-left:5px solid var(--accent);border-radius:var(--radius);padding:14px 16px;color:var(--text);box-shadow:var(--shadow)}.book-card.planned{opacity:.6}.book-title{font-size:1.1rem;font-weight:700}.book-meta{display:flex;justify-content:space-between;margin-top:8px;font-size:.85rem;color:var(--muted)}.book-card .bar>div,.batch-tile .bar>div{background:var(--accent)}.batch-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:10px}.batch-tile{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:12px 14px;color:var(--text);box-shadow:var(--shadow)}.batch-tile:hover{border-color:var(--accent)}.batch-n{font-weight:700}.batch-foot{display:flex;justify-content:space-between;margin-top:6px;color:var(--muted)}.due{color:var(--accent);font-weight:600}.word-list{list-style:none;padding:0;margin:0;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden}.word-list li+li{border-top:1px solid var(--border)}.word-list a{display:grid;grid-template-columns:auto minmax(5.5em,auto) 1fr auto;align-items:center;gap:12px;padding:10px 14px;color:var(--text)}.word-list a:hover{background:var(--surface-2)}.word-list .no{font-size:.75rem;width:1.8em;text-align:right}.word-list .w{font-size:1.25rem;line-height:1.2}.word-list .w small,.word-list .m small{display:block;font-size:.75rem;color:var(--muted)}.word-list .m{font-size:.9rem;overflow:hidden;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical}#results .word-list a{grid-template-columns:minmax(5.5em,auto) 1fr auto}.dot{width:9px;height:9px;border-radius:50%;background:var(--border)}.dot.st-learning{background:var(--hard)}.dot.st-young{background:var(--easy)}.dot.st-mature{background:var(--ok)}.st{font-weight:600}.st-new{color:var(--muted)}.st-learning{color:var(--hard)}.st-young{color:var(--easy)}.st-mature{color:var(--ok)}.pager{display:flex;justify-content:space-between;gap:10px;margin:14px 0}.wd-head{margin-bottom:6px}.wd-word{font-size:2.6rem;line-height:1.2;font-weight:600}.wd-reading{font-size:1.15rem;display:flex;align-items:center;flex-wrap:wrap;gap:4px}.pills,.tags{display:flex;flex-wrap:wrap;gap:6px;margin-top:8px}.pill,.tag{font-size:.75rem;padding:2px 9px;border-radius:999px;background:var(--surface-2);color:var(--muted)}.wd-meaning{font-size:1.1rem;font-weight:600;margin:10px 0 14px}.wd-notes{background:var(--surface-2);border-radius:10px;padding:8px 12px;margin-bottom:12px}.wd-notes p{margin:2px 0}.label{color:var(--muted);font-size:.85rem}.wd-sec{border-top:1px solid var(--border);padding:12px 0 4px}.wd-sec p{margin:0 0 8px}.jp-line{font-size:1.05rem;margin:0!important}.kana-line{font-size:.85rem;color:var(--muted);margin:0 0 6px!important}.kana-line.inline{margin:0!important}.hide-kana .kana-line{display:none}.coll{margin:0;padding-left:1.1em}.coll li{margin:2px 0}.example{padding:8px 0}.example+.example{border-top:1px dashed var(--border)}.example .vi{margin:2px 0 0!important}.study{max-width:620px;margin:0 auto;padding-top:env(safe-area-inset-top)}.study-top{display:flex;align-items:center;gap:12px;margin-bottom:6px}.study-sub{display:flex;justify-content:space-between;align-items:center;gap:8px;margin-bottom:10px;flex-wrap:wrap}select{font:inherit;font-size:.85rem;padding:4px 6px;border-radius:8px;border:1px solid var(--border);background:var(--surface);color:var(--text)}.flashcard{background:var(--surface);border:1px solid var(--border);border-radius:20px;box-shadow:var(--shadow);padding:28px 20px;min-height:260px;display:flex;flex-direction:column;justify-content:center;text-align:center;cursor:pointer;outline:none}.flashcard:focus-visible{border-color:var(--accent)}.flashcard.is-flipped{text-align:left;cursor:default;justify-content:flex-start;min-height:0}.flashcard.quiz{cursor:default;min-height:190px;margin-bottom:14px}.fc-big{font-size:clamp(2.6rem,13vw,4.2rem);line-height:1.2;font-weight:600}.fc-ctx{font-size:1.2rem;color:var(--muted);margin-top:8px}.fc-meaning{font-size:1.4rem;font-weight:600}.fc-q{color:var(--muted);font-size:.9rem;margin-top:16px}.hint{color:var(--muted);font-size:.8rem;margin-top:18px}.fc-back .wd-word{font-size:2.2rem}.study-actions{margin-top:14px;position:sticky;bottom:calc(10px + env(safe-area-inset-bottom))}.rate{display:grid;grid-template-columns:repeat(4,1fr);gap:8px}.rate-btn{display:flex;flex-direction:column;align-items:center;gap:2px;padding:10px 4px;border-radius:12px;border:1px solid var(--border);background:var(--surface);color:var(--text);font:inherit;cursor:pointer;box-shadow:var(--shadow)}.rate-btn span{font-size:.72rem;color:var(--muted)}.rate-btn kbd{margin:0}.rate-btn.again b{color:var(--bad)}.rate-btn.hard b{color:var(--hard)}.rate-btn.good b{color:var(--ok)}.rate-btn.easy b{color:var(--easy)}.options{display:grid;gap:10px}.options.jp-opts{grid-template-columns:1fr 1fr}.opt{display:flex;align-items:center;justify-content:center;gap:4px;min-height:56px;padding:10px 12px;border-radius:12px;border:1px solid var(--border);background:var(--surface);color:var(--text);font:inherit;cursor:pointer;text-align:center;box-shadow:var(--shadow)}.jp-opts .opt{font-size:1.3rem}.opt:hover:not(:disabled){border-color:var(--accent)}.opt.correct{background:var(--ok-bg);border-color:var(--ok);color:var(--ok);font-weight:700}.opt.wrong{background:var(--bad-bg);border-color:var(--bad);color:var(--bad)}.opt.dim{opacity:.5}.type-form{display:flex;gap:8px}.type-input{flex:1;min-height:50px;font-size:1.3rem;padding:0 14px;border-radius:12px;border:1px solid var(--border);background:var(--surface);color:var(--text)}.feedback{margin:14px 0;padding:12px 14px;border-radius:12px}.feedback.ok{background:var(--ok-bg)}.feedback.bad{background:var(--bad-bg)}.feedback.ok>b{color:var(--ok)}.feedback.bad>b{color:var(--bad)}.feedback .mini .wd-word{font-size:1.6rem}.feedback .mini .wd-meaning{margin:4px 0 0;font-size:1rem}.feedback .mini .pills{display:none}.finish{padding:32px 20px}.big-emoji{font-size:3rem}.score{font-size:3.2rem;font-weight:800;color:var(--accent)}.wrong-list{text-align:left;margin:16px 0}.wrong-item{display:block;padding:8px 0;border-top:1px solid var(--border);color:var(--text)}.checks{border:0;padding:0;margin:12px 0 18px;display:grid;gap:8px}.checks legend{font-weight:600;margin-bottom:8px}.check{display:flex;align-items:center;gap:12px;padding:10px 12px;border:1px solid var(--border);border-radius:12px;cursor:pointer}.check input{width:20px;height:20px;accent-color:var(--accent)}.check span{display:flex;flex-direction:column}.search-box input{width:100%;min-height:48px;font-size:1.05rem;padding:0 16px;border-radius:12px;border:1px solid var(--border);background:var(--surface);color:var(--text);margin-bottom:12px}.settings{display:grid;gap:14px}.switch{display:flex;gap:12px;align-items:center;cursor:pointer}.switch input{width:20px;height:20px;accent-color:var(--accent)}.field{display:flex;justify-content:space-between;align-items:center;gap:12px}.error p{color:var(--bad)}@media (max-width: 480px){.word-list a{gap:10px;padding:10px 12px}.word-list .no{display:none}.word-list a{grid-template-columns:minmax(4.8em,auto) 1fr auto}.hero-num{font-size:2.2rem}}