:root{--bg: #ffffff;--bg-tint: #f4f6f6;--surface: #ffffff;--surface-2: #f2f4f4;--edge: #17140f;--border: #e3e7e7;--border-strong: #c3caca;--text: #1b2123;--muted: #5e696b;--accent: #8fbcae;--accent-2: #7aa89a;--accent-soft: #dfece7;--accent-text: #17140f;--accent-ink: #3d6a5b;--gradient: var(--accent);--lang: #1e3a5f;--lang-soft: var(--surface);--lang-text: #ffffff;--nav: #185d72;--nav-ink: #eaf3f6;--ok: #97ad5b;--ok-soft: #e8eed8;--bad: #e39284;--bad-soft: #fae3de;--warn: #e0ad4e;--warn-soft: #faeed3;--ok-ink: #4d5a24;--bad-ink: #8e3a2a;--warn-ink: #7a5410;--on-signal: #17140f;--olive: #1d3b31;--olive-ink: #f3ede1;--radius: 18px;--radius-sm: 12px;--radius-pill: 999px;--shadow: 3px 3px 0 var(--edge);--shadow-lg: 5px 5px 0 var(--edge);--edge-width: 2px;--font: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;--font-display: Georgia, "Iowan Old Style", "Palatino Linotype", Palatino, serif;--lv-a1: #6d9c74;--lv-a2: #5d9ca4;--lv-b1: #7590bd;--lv-b2: #9b8ec4;--lv-sat: #d19a5c;--lv-ielts: #cf8878;--lv-default: #3d6a5b}@media (prefers-color-scheme: dark){:root{--bg: #01080f;--bg-tint: #060f18;--surface: #0a141f;--surface-2: #101c29;--edge: #2b3f56;--border: #16222f;--border-strong: #223143;--text: #e9eff7;--muted: #94a9c2;--accent: #8fbcae;--accent-2: #7aa89a;--accent-soft: #23302c;--accent-text: #17140f;--accent-ink: #a4cfc0;--gradient: var(--accent);--lang: #2b5488;--lang-soft: var(--surface);--lang-text: #ffffff;--ok: #a8bd68;--ok-soft: #262c17;--bad: #e39284;--bad-soft: #33201c;--warn: #e0ad4e;--warn-soft: #302614;--ok-ink: #c2d489;--bad-ink: #f0b0a4;--warn-ink: #eec87e;--olive: #22463a;--olive-ink: #f3ede1;--shadow: 3px 3px 0 #0d0b08;--shadow-lg: 5px 5px 0 #0d0b08}}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font-family:var(--font);font-size:16px;line-height:1.55;-webkit-font-smoothing:antialiased}h1,h2,h3{margin:0;line-height:1.15;letter-spacing:-.03em}h1{font-size:clamp(1.9rem,1.4rem + 2vw,2.6rem);font-weight:800}h2{font-size:1.4rem;font-weight:750}h3{font-size:1.08rem;font-weight:700;letter-spacing:-.015em}a{color:var(--accent-ink);text-decoration:none;font-weight:600}a:hover{text-decoration:underline}::selection{background:var(--accent);color:var(--accent-text)}.app{min-height:100vh;display:flex;flex-direction:column}.topbar{position:sticky;top:0;z-index:30;display:flex;align-items:center;gap:20px;padding:12px 26px;background:var(--surface);border-bottom:var(--edge-width) solid var(--edge)}.brand{display:flex;align-items:center;gap:10px;font-family:var(--font-display);font-weight:400;font-size:1.3rem;letter-spacing:-.02em;color:var(--text)}.brand:hover{text-decoration:none}.brand:hover .brand-mark{transform:rotate(-4deg)}.brand .brand-mark{flex:none;width:30px;height:30px;transition:transform .18s ease}.brand .brand-text{display:flex;flex-direction:column;line-height:1.1}.brand .brand-text span{font-family:var(--font);font-weight:700;font-size:.6rem;letter-spacing:.1em;text-transform:uppercase;color:var(--muted)}.topbar nav{display:flex;gap:7px;align-items:center;flex-wrap:wrap;margin-left:8px}.topbar .sign-out{margin-left:auto}.topbar nav a{display:inline-flex;align-items:center;gap:7px;padding:8px 14px;border-radius:var(--radius-pill);border:var(--edge-width) solid transparent;background:var(--nav);color:var(--nav-ink);font-size:.94rem;font-weight:650}.topbar nav a svg{width:1.15em;height:1.15em;flex:none}.topbar nav a:hover{background:color-mix(in srgb,var(--accent) 24%,var(--nav));color:var(--nav-ink);text-decoration:none}@media (min-width: 900px){.topbar nav{gap:9px}.topbar nav a{padding:10px 18px;font-size:1rem}}.topbar nav a.active{background:var(--accent);color:var(--on-signal);border-color:transparent;box-shadow:var(--shadow)}.who{font-size:.82rem;font-weight:600;color:var(--muted);padding-left:14px;border-left:1px solid var(--border);margin-left:8px}.page{width:100%;max-width:1120px;margin:0 auto;padding:26px 26px 44px;flex:1}.page-head{display:flex;align-items:flex-end;justify-content:space-between;gap:18px;flex-wrap:wrap;margin-bottom:26px}.page-head p{margin:8px 0 0;color:var(--muted);font-size:.98rem;max-width:62ch}.page-head__title{display:flex;align-items:center;gap:14px}.page-head__mark{flex:none;display:grid;place-items:center;width:52px;height:52px;border-radius:var(--radius-sm);border:var(--edge-width) solid var(--edge);background:var(--accent);color:var(--accent-text);box-shadow:var(--shadow)}.page-head__mark svg{width:30px;height:30px}.hero{position:relative;border-radius:var(--radius);padding:28px 30px;margin-bottom:24px;background:var(--accent);color:var(--edge);border:var(--edge-width) solid var(--edge);box-shadow:var(--shadow-lg)}.hero h1{color:var(--edge);font-family:var(--font-display);font-weight:400}.hero p{margin:10px 0 0;color:color-mix(in srgb,var(--edge) 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var(--edge);border-radius:var(--radius-sm);padding:16px 18px;box-shadow:var(--shadow)}.stat:before{content:"";position:absolute;left:0;top:0;bottom:0;width:6px;background:var(--accent);border-right:var(--edge-width) solid var(--edge)}.stat .value{font-family:var(--font-display);font-size:2rem;font-weight:400;letter-spacing:-.045em;font-variant-numeric:tabular-nums;line-height:1.1}a.stat{display:block;color:inherit;text-decoration:none;transition:transform .12s ease,box-shadow .12s ease}a.stat:hover{transform:translate(-2px,-2px);box-shadow:var(--shadow-lg)}a.stat:focus-visible{outline:2px solid var(--accent);outline-offset:3px}.stat .label{font-size:.72rem;font-weight:700;color:var(--muted);text-transform:uppercase;letter-spacing:.09em;margin-top:2px}.stat-help{margin:-16px 0 28px;font-size:.92rem}.stat-help>summary{cursor:pointer;display:inline-block;padding:6px 0;color:var(--muted);font-weight:600}.stat-help>summary:hover{color:var(--text)}.stat-help>summary:after{content:"›";display:inline-block;margin-left:8px;transform:rotate(90deg);transition:transform .15s ease}.stat-help[open]>summary:after{transform:rotate(-90deg)}.stat-help>summary::-webkit-details-marker{display:none}.stat-help>summary:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:4px}.stat-help dl{margin:6px 0 0;background:var(--surface);border:var(--edge-width) solid var(--edge);border-radius:var(--radius-sm);padding:16px 18px;box-shadow:var(--shadow)}.stat-help dt{font-size:.72rem;font-weight:700;color:var(--muted);text-transform:uppercase;letter-spacing:.09em}.stat-help dd{margin:4px 0 0;max-width:68ch;line-height:1.55}.stat-help dd+dt{margin-top:14px}.stat-help>p{margin:12px 0 0;max-width:68ch;line-height:1.55;color:var(--muted)}.words-controls{gap:12px;flex-wrap:wrap;align-items:center;margin-bottom:16px}.seg__count{margin-left:7px;font-size:.8em;font-variant-numeric:tabular-nums;opacity:.65}input.words-search{max-width:240px;margin-left:auto;-webkit-appearance:none;-moz-appearance:none;appearance:none}.words-foot{margin-top:12px}.tag.new{background:var(--surface-2);color:var(--muted)}.tag.due-tag{background:var(--accent-soft);color:var(--accent-ink);margin-left:6px}@media (max-width: 640px){input.words-search{max-width:none;margin-left:0;width:100%}}.deck-card{position:relative;overflow:hidden;display:flex;flex-direction:column;gap:12px;text-align:left;transition:transform .12s ease,box-shadow .12s ease;font:inherit;color:inherit;padding-top:42px}.deck-card:before{content:"";position:absolute;top:0;left:0;right:0;height:28px;background:var(--band, var(--accent));border-bottom:var(--edge-width) solid var(--edge)}.deck-card:hover{transform:translate(-2px,-2px);box-shadow:var(--shadow-lg)}.deck-card:active{transform:translate(3px,3px);box-shadow:0 0 0 var(--edge)}.deck-card .desc{font-size:.9rem;color:var(--muted);flex:1}.deck-top{display:flex;align-items:center;gap:10px;flex-wrap:wrap}.deck-card__icon{width:46px;height:46px;display:grid;place-items:center;border-radius:var(--radius-sm);border:var(--edge-width) solid var(--edge);background:var(--accent-soft);color:var(--text)}.deck-card__icon svg{width:28px;height:28px}.level{font-size:.7rem;font-weight:800;letter-spacing:.08em;padding:4px 10px;border-radius:var(--radius-pill);border:var(--edge-width) solid var(--edge);background:var(--lv, var(--lv-default));color:#fff}.level-a1{--lv: #3d6a52}.level-a2{--lv: #35706f}.level-b1{--lv: #3a5a80}.level-b2{--lv: #55508a}.level-sat{--lv: #26374b}.level-ielts{--lv: #2b5260}.level-c1{--lv: #7a4c6b}.level-a1a2{--lv: #396d62}.level-b1b2{--lv: #475586}.level-business{--lv: #4a4741}.band-a1{--band: #6a9c81}.band-a2{--band: #63a09f}.band-b1{--band: #6e8fb6}.band-b2{--band: #8681b8}.band-sat{--band: #5a7a99}.band-ielts{--band: #5f8b98}.band-c1{--band: #b07a9c}.band-a1a2{--band: #669e90}.band-b1b2{--band: #7a88b8}.bar{height:12px;border-radius:var(--radius-pill);border:var(--edge-width) solid var(--edge);background:var(--surface-2);overflow:hidden;display:flex}.bar i{display:block;height:100%;transition:width .4s ease}.bar .learned{background:var(--ok)}.bar .started{background:var(--accent)}.deck-meta{display:flex;justify-content:space-between;align-items:center;font-size:.83rem;font-weight:600;color:var(--muted);font-variant-numeric:tabular-nums}.prereq{margin:0;font-size:.82rem;line-height:1.45;color:var(--warn-ink);background:var(--warn-soft);border:var(--edge-width) solid var(--edge);padding:9px 12px;border-radius:var(--radius-sm);font-weight:600}button{font:inherit}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 22px;border-radius:var(--radius-pill);border:var(--edge-width) solid var(--edge);background:var(--surface);color:var(--text);font-weight:700;font-size:.95rem;white-space:nowrap;cursor:pointer;box-shadow:var(--shadow);transition:transform .08s ease,box-shadow .08s ease,background .15s}.btn:hover:not(:disabled){background:var(--surface-2)}.btn:active:not(:disabled){transform:translate(3px,3px);box-shadow:0 0 0 var(--edge)}.btn:disabled{opacity:.5;cursor:not-allowed;box-shadow:none;transform:translate(3px,3px)}.btn.primary{background:var(--accent);color:var(--accent-text)}.btn.primary:hover:not(:disabled){background:var(--accent-2)}.btn.ghost,.btn.hollow{border-color:transparent;background:transparent;box-shadow:none}.btn.ghost:hover:not(:disabled),.btn.hollow:hover:not(:disabled){background:var(--surface-2)}.btn.ghost:active:not(:disabled),.btn.hollow:active:not(:disabled){transform:none}.btn.hollow{border-color:var(--edge)}.btn.danger{color:var(--bad-ink);background:var(--bad-soft)}.btn.danger:hover:not(:disabled){background:var(--bad);color:var(--on-signal)}.btn .muted,.btn .small{color:inherit;opacity:.72}.btn.small{padding:8px 15px;font-size:.85rem;box-shadow:2px 2px 0 var(--edge)}.btn.small:active:not(:disabled){transform:translate(2px,2px)}.btn.ghost,.btn.ghost:active:not(:disabled){box-shadow:none}.btn.block{width:100%}label.field{display:block;margin-bottom:16px}label.field>span{display:block;font-size:.78rem;font-weight:750;text-transform:uppercase;letter-spacing:.07em;margin-bottom:7px;color:var(--muted)}label.field small{display:block;margin-top:6px;font-size:.8rem}label.field small.field-bad{color:var(--bad-ink);font-weight:700}input[aria-invalid=true]{border-color:var(--bad)}input[type=text],input[type=email],input[type=password],input[type=search],textarea,select{width:100%;padding:12px 14px;border-radius:var(--radius-sm);border:var(--edge-width) solid var(--edge);background:var(--surface);color:var(--text);font:inherit;transition:box-shadow .15s}textarea{resize:vertical;min-height:96px;line-height:1.55}input:focus,textarea:focus,select:focus{outline:none;box-shadow:var(--shadow)}input:focus-visible,textarea:focus-visible,select:focus-visible,button:focus-visible,a:focus-visible{outline:3px solid var(--accent);outline-offset:2px}.seg{display:inline-flex;padding:4px;gap:4px;background:var(--surface-2);border-radius:var(--radius-pill);border:var(--edge-width) solid var(--edge);flex-wrap:wrap}.seg button{border:var(--edge-width) solid transparent;background:transparent;color:var(--muted);padding:7px 15px;border-radius:var(--radius-pill);cursor:pointer;font-size:.87rem;font-weight:700;transition:background .15s,color .15s}.seg button:hover{color:var(--text)}.seg button[aria-pressed=true]{background:var(--accent);color:var(--accent-text);border-color:var(--edge)}.notice{padding:13px 16px;border-radius:var(--radius-sm);font-size:.92rem;font-weight:600;margin-bottom:16px;border:var(--edge-width) solid var(--edge)}.notice.error{background:var(--bad-soft);color:var(--bad-ink)}.notice.info{background:var(--accent-soft);color:var(--text)}.notice.ok{background:var(--ok-soft);color:var(--ok-ink)}.notice.warn{background:var(--warn-soft);color:var(--warn-ink)}.shop-connection{border-left:4px solid var(--ok);margin-bottom:16px}.shop-connection.is-off{border-left-color:var(--warn);background:var(--warn-soft)}.shop-connection .row.between{gap:16px;flex-wrap:wrap;align-items:flex-start}.unmatched{border-left:4px solid var(--warn);margin-bottom:22px}.teachers{margin-bottom:22px}.plan-choice{display:grid;grid-template-columns:repeat(auto-fit,minmax(8.5rem,1fr));gap:10px;margin:4px 0 8px}.plan-choice__item{display:flex;flex-direction:column;align-items:center;gap:3px;padding:16px 10px;text-align:center;border:var(--edge-width) solid var(--edge);border-radius:var(--radius-sm);background:var(--surface);color:var(--text)}.plan-choice__item:hover{text-decoration:none;border-color:var(--accent)}.plan-choice__item.is-best{border-color:var(--accent)}.plan-choice__price{font-family:var(--serif, Georgia, serif);font-size:1.35rem;line-height:1.15}.plan-choice__saving{font-size:.74rem;font-weight:700;letter-spacing:.02em;color:var(--ok-ink)}.auth-perks{list-style:none;margin:16px 0 4px;padding:0;text-align:left}.auth-perks li{position:relative;padding:5px 0 5px 22px;font-size:.9rem;color:var(--muted);line-height:1.45}.auth-perks li:before{content:"✓";position:absolute;left:0;color:var(--ok-ink);font-weight:700}.landing{max-width:62rem;margin:0 auto;padding:0 20px 60px}.landing__bar{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:18px 0 8px}.landing__hero{text-align:center;padding:44px 0 8px}.landing__eyebrow{text-transform:uppercase;letter-spacing:.14em;font-size:.72rem;font-weight:700;color:var(--muted);margin:0 0 14px}.landing__hero h1{font-size:clamp(2rem,6vw,3.2rem);line-height:1.08;margin:0 0 18px;letter-spacing:-.02em}.landing__wordmark{display:block;font-family:var(--font);font-weight:800;font-size:.82rem;letter-spacing:.22em;color:var(--accent-ink, var(--muted));margin-bottom:12px}.landing__lede{font-size:clamp(1.02rem,2.2vw,1.18rem);line-height:1.6;color:var(--muted);max-width:34rem;margin:0 auto 28px}.landing__cta{display:inline-flex;font-size:1.05rem;padding:14px 30px}.landing__reassure{margin:12px 0 0;font-size:.88rem;color:var(--muted)}.landing__shot{margin:30px auto 10px;max-width:24rem;text-align:center}.landing__shot img{display:block;width:100%;height:auto;mix-blend-mode:normal;border-radius:18px}.landing__shot figcaption{margin-top:10px;font-size:.86rem;line-height:1.5;color:var(--muted)}.landing__section{padding:40px 0 8px}.landing__section h2{font-size:clamp(1.4rem,3.4vw,1.9rem);margin:0 0 22px;letter-spacing:-.01em}.landing__grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(15rem,1fr));gap:26px 34px}.landing__grid h3{font-size:1.02rem;margin:0 0 8px}.landing__grid p{margin:0;color:var(--muted);line-height:1.62}.landing__list{list-style:none;margin:0;padding:0}.landing__list li{padding:13px 0;border-bottom:1px solid var(--border);line-height:1.6;color:var(--muted)}.landing__list li:last-child{border-bottom:0}.landing__list b{color:var(--text)}.landing__plans{display:grid;grid-template-columns:repeat(auto-fit,minmax(11rem,1fr));gap:14px;margin:20px 0 18px}.landing__plan{display:flex;flex-direction:column;align-items:center;gap:6px;padding:22px 16px;border:var(--edge-width) solid var(--edge);border-radius:var(--radius-sm);background:var(--surface)}.landing__price{font-family:var(--serif, Georgia, serif);font-size:1.7rem;line-height:1}.landing__closing{text-align:center;padding-top:52px}.landing__closing p{color:var(--muted);max-width:30rem;margin:0 auto 24px;line-height:1.6}.landing__foot{margin-top:54px;padding-top:22px;border-top:1px solid var(--border);text-align:center}.guide{max-width:900px;margin:0 auto}.guide__sheet{display:block;border:var(--edge-width) solid var(--edge);border-radius:var(--radius-sm);overflow:hidden;background:#fff}.guide__sheet img{display:block;width:100%;height:auto}.guide__hint{text-align:center;margin-top:12px}.synonym-word{font-family:var(--serif, Georgia, serif);font-size:clamp(2rem,8vw,3rem);text-align:center;margin:18px 0 10px;letter-spacing:-.01em}.synonym-cue{display:flex;align-items:baseline;justify-content:center;gap:12px;margin:16px 0 4px}.synonym-cue b{font-family:var(--serif, Georgia, serif);font-size:2.2rem;line-height:1;color:var(--accent-ink, var(--text))}.synonym-cue span{font-size:.9rem;color:var(--muted)}.synonym-cue__rest{font-family:var(--serif, Georgia, serif);font-size:2rem;line-height:1;letter-spacing:.12em;color:var(--border-strong, var(--muted));margin-left:-6px}.synonym-list{margin-top:8px}.delivery{margin-top:14px}.delivery code{word-break:break-all}.teacher-list{list-style:none;margin:14px 0 0;padding:0}.teacher-list li{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:9px 0;border-bottom:1px solid var(--border)}.teacher-list li:last-child{border-bottom:0}.empty{text-align:center;padding:64px 20px;color:var(--muted)}.empty h2{margin-bottom:10px;color:var(--text)}.empty p{margin-bottom:18px}.practice{max-width:660px;margin:0 auto}.advance{position:sticky;bottom:10px;z-index:5;margin-top:clamp(12px,2vh,22px);box-shadow:var(--shadow),0 0 0 9px var(--bg)}.advance:active:not(:disabled){box-shadow:0 0 0 var(--edge),0 0 0 9px var(--bg)}.practice:has(.advance){padding-bottom:104px}.practice-head{display:flex;align-items:center;gap:14px;margin-bottom:clamp(10px,1.9vh,20px);font-size:.84rem;font-weight:700;color:var(--muted);font-variant-numeric:tabular-nums}.progress-track{flex:1;height:12px;background:var(--surface-2);border:var(--edge-width) solid var(--edge);border-radius:var(--radius-pill);overflow:hidden}.progress-track i{display:block;height:100%;background:var(--accent);transition:width .35s ease}.speed-bar{display:flex;align-items:center;gap:14px;margin-bottom:8px}.speed-stat{display:flex;align-items:baseline;gap:8px}.speed-stat__label{font-size:.72rem;font-weight:800;letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}.speed-stat b{font-size:1.8rem;font-weight:800;font-variant-numeric:tabular-nums}.speed-mult{margin-left:auto;padding:3px 12px;border-radius:var(--radius-pill);border:var(--edge-width) solid var(--edge);background:var(--accent-soft);color:var(--accent-ink);font-weight:800;font-size:1.05rem}.speed-clock{margin-left:auto;min-width:68px;text-align:right;font-size:2.1rem;font-weight:800;font-variant-numeric:tabular-nums}.speed-mult+.speed-clock{margin-left:0}.speed-clock.low{color:var(--bad-ink)}.speed-track{height:10px;background:var(--surface-2);border:var(--edge-width) solid var(--edge);border-radius:var(--radius-pill);overflow:hidden}.speed-track i{display:block;height:100%;background:var(--accent);transition:width .1s linear}.speed-word{display:flex;flex-direction:column;align-items:center;gap:6px;margin:clamp(16px,4vh,40px) 0 clamp(8px,1.5vh,16px);text-align:center;font-size:clamp(1.7rem,6vw,2.6rem);font-weight:800;line-height:1.15}.speed-options .option{font-size:1.05rem}.speed-intro,.speed-over{text-align:center}.speed-intro h1,.speed-over h1{margin-bottom:6px}.speed-best{font-weight:700;margin-top:14px}.speed-start{margin-top:10px;font-size:1.15rem;padding:16px}.speed-apart{margin-top:12px}.speed-final{margin:10px 0 4px;font-size:clamp(3rem,14vw,4.6rem);font-weight:800;line-height:1;color:var(--accent-ink);font-variant-numeric:tabular-nums}.speed-over .row{justify-content:center}.speed-over table{margin:0 auto;text-align:left}.prompt{position:relative;text-align:center;padding:clamp(18px,3.2vh,40px) 20px clamp(14px,2.6vh,34px)}.prompt--inset{padding:26px 20px 22px;border-radius:var(--radius-sm);border:var(--edge-width) solid var(--edge);background:var(--surface-2)}.prompt .cue{font-size:.72rem;font-weight:750;text-transform:uppercase;letter-spacing:.12em;color:var(--muted)}.prompt .word{font-family:var(--font-display);font-size:clamp(1.7rem,1rem + 1.3vw + 1.9vh,2.5rem);font-weight:400;letter-spacing:-.03em;margin:clamp(6px,1.4vh,12px) 0 5px;overflow-wrap:anywhere;color:var(--text)}.prompt .pos{font-size:.85rem;color:var(--muted);font-weight:600;font-style:italic}.options{display:grid;gap:clamp(6px,1.1vh,11px);margin-top:clamp(12px,2.2vh,22px)}.option{display:flex;align-items:center;gap:14px;width:100%;padding:clamp(10px,1.7vh,15px) 18px;text-align:left;border-radius:var(--radius-pill);border:var(--edge-width) solid var(--edge);background:var(--surface);color:var(--text);font-size:1.02rem;font-weight:650;cursor:pointer;box-shadow:var(--shadow);transition:transform .08s ease,box-shadow .08s ease,background .12s}.option:hover:not(:disabled){background:var(--surface-2)}.option:active:not(:disabled){transform:translate(3px,3px);box-shadow:0 0 0 var(--edge)}.option:disabled{cursor:default}.option .key{flex:none;width:28px;height:28px;display:grid;place-items:center;border-radius:var(--radius-pill);border:var(--edge-width) solid var(--edge);background:var(--surface-2);font-size:.78rem;font-weight:800;color:var(--text)}.option.selected{background:var(--accent-soft)}.option.correct,.option.wrong{transform:translate(3px,3px);box-shadow:0 0 0 var(--edge)}.option.correct{background:var(--ok);color:var(--on-signal)}.option.wrong{background:var(--bad);color:var(--on-signal)}.option.correct .key,.option.wrong .key{background:var(--surface);color:var(--text)}.feedback{margin-top:clamp(11px,2vh,18px);padding:clamp(11px,1.9vh,16px) 18px;border-radius:var(--radius-sm);border:var(--edge-width) solid var(--edge);font-size:.95rem;font-weight:650}.feedback.right{background:var(--ok-soft);color:var(--ok-ink)}.feedback.wrong{background:var(--bad-soft);color:var(--bad-ink)}.feedback.almost{background:var(--warn-soft);color:var(--warn-ink)}.feedback .example{margin-top:10px;color:var(--text);opacity:.85;font-size:.89rem;font-weight:500}.feedback .example em{display:block;color:var(--muted);font-style:normal}.gloss{font-style:italic;border-left:3px solid currentColor;padding-left:12px;opacity:.9}.lang-bar{display:flex;align-items:center;gap:18px;flex-wrap:wrap;margin-bottom:22px;padding:14px 18px;border-radius:var(--radius);background:var(--lang-soft);border:var(--edge-width) solid var(--edge);box-shadow:var(--shadow)}.lang-bar__label{display:flex;align-items:center;gap:9px;font-size:.88rem;font-weight:750;letter-spacing:.02em;color:var(--text)}.lang-bar__label svg{flex:none}.lang-switch{display:flex;gap:8px;flex-wrap:wrap}.lang-switch button{display:inline-flex;align-items:center;gap:9px;padding:8px 17px;border-radius:var(--radius-pill);border:var(--edge-width) solid var(--edge);background:var(--surface);color:var(--text);font:inherit;font-weight:650;cursor:pointer;box-shadow:2px 2px 0 var(--edge);transition:transform .08s ease,box-shadow .08s ease,background .15s}.lang-switch button:hover{background:var(--surface-2)}.lang-switch button:active{transform:translate(2px,2px);box-shadow:0 0 0 var(--edge)}.lang-switch button[aria-pressed=true]{background:var(--lang);color:var(--lang-text);transform:translate(2px,2px);box-shadow:0 0 0 var(--edge)}.flag{flex:none;width:21px;height:14px;border-radius:3px}.lang-switch__count{font-size:.74rem;font-weight:700;font-variant-numeric:tabular-nums;padding:1px 8px;border-radius:var(--radius-pill);background:color-mix(in srgb,currentColor 15%,transparent)}.lang-switch button:focus-visible{outline:3px solid var(--lang);outline-offset:2px}.picker{margin-bottom:22px}.picker__title{font-size:1.05rem;margin:0 0 14px}.mode-tiles{display:grid;gap:12px;grid-template-columns:repeat(auto-fit,minmax(130px,1fr))}.mode-tile{display:flex;flex-direction:column;align-items:center;gap:9px;padding:18px 12px 15px;border-radius:var(--radius-sm);border:var(--edge-width) solid var(--edge);background:var(--surface);color:var(--text);font:inherit;font-size:.9rem;font-weight:700;text-align:center;cursor:pointer;box-shadow:var(--shadow);transition:transform .08s ease,box-shadow .08s ease,background .15s}.mode-tile svg{width:34px;height:34px}.mode-tile:hover{background:var(--surface-2)}.mode-tile:active{transform:translate(3px,3px);box-shadow:0 0 0 var(--edge)}.mode-tile[aria-pressed=true]{background:var(--accent);color:var(--accent-text);transform:translate(3px,3px);box-shadow:0 0 0 var(--edge)}.picker__deck{margin:-6px 0 14px;color:var(--muted);font-size:.92rem}.picker__deck b{color:var(--text)}.picker__go{display:flex;justify-content:flex-end;margin-top:18px}.picker__go .btn{min-width:160px}.deck-section{background:var(--bg-tint);border-radius:var(--radius);padding:20px;margin-bottom:22px}.deck-section__head{margin-bottom:14px}.deck-section__head h2{margin:0}.deck-section__head p{margin:4px 0 0;color:var(--muted);font-size:.95rem}.deck-card{cursor:pointer}.deck-card.is-selected{box-shadow:0 0 0 3px var(--accent),var(--shadow-lg)}.picker__row{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-top:16px;padding-top:16px;border-top:1px solid var(--border)}.picker__label{font-size:.78rem;font-weight:750;letter-spacing:.07em;text-transform:uppercase;color:var(--muted)}.issued-password{margin-bottom:22px;background:var(--accent-soft);box-shadow:var(--shadow-lg)}.password-value{display:block;margin-top:16px;padding:16px 18px;border-radius:var(--radius-sm);background:var(--surface);border:var(--edge-width) dashed var(--edge);font-family:ui-monospace,SF Mono,Menlo,Consolas,monospace;font-size:1.5rem;font-weight:700;letter-spacing:.08em;text-align:center;color:var(--text);-webkit-user-select:all;user-select:all;word-break:break-all}.correction{margin-top:14px;padding:14px 16px;border-radius:var(--radius-sm);background:var(--surface);border:var(--edge-width) solid var(--edge);color:var(--text);font-weight:500}.correction .label{display:block;font-size:.72rem;font-weight:750;text-transform:uppercase;letter-spacing:.07em;color:var(--muted);margin-bottom:6px}.correction p{font-size:1.02rem;line-height:1.6;margin:0}.correction .yours{margin-top:10px;padding-top:10px;border-top:1px solid var(--border);color:var(--muted);font-size:.9rem;text-decoration:line-through;text-decoration-color:color-mix(in srgb,var(--bad) 55%,transparent)}.sentence-count{font-variant-numeric:tabular-nums}.score{display:flex;align-items:center;gap:10px 18px;flex-wrap:wrap;padding:14px 18px;margin-bottom:20px}.score__points{display:flex;align-items:baseline;gap:7px}.score__points b{font-family:var(--font-display);font-size:1.9rem;font-weight:400;line-height:1;letter-spacing:-.03em;font-variant-numeric:tabular-nums}.score__points span{font-size:.7rem;font-weight:700;text-transform:uppercase;letter-spacing:.09em;color:var(--muted)}.score__badges{display:flex;align-items:center;gap:4px}.score__badges svg:not(:first-child){margin-left:-2px}.score__next{margin:0 0 0 auto;font-size:.88rem;font-weight:650;color:var(--muted)}@media (max-width: 560px){.score__next{margin-left:0;width:100%}.score{gap:8px 12px}.score__badges svg{width:26px;height:26px}}.colloc{margin:0;font-family:var(--font-display);font-size:clamp(1.5rem,1.1rem + 1.8vw,2.1rem);line-height:1.5;color:var(--text)}.colloc .blank{display:inline-block;min-width:5ch;margin:0 4px;padding:0 10px;font-family:var(--font);font-size:.82em;font-weight:800;text-align:center;border-bottom:3px solid var(--edge);color:var(--muted)}.colloc .blank.right{border-color:var(--ok);color:var(--ok-ink)}.colloc .blank.wrong{border-color:var(--bad);color:var(--bad-ink)}.colloc__meaning{margin:14px 0 0;font-size:1rem;font-weight:650;color:var(--text)}.say-this{padding:18px 20px;border-radius:var(--radius-sm);border:var(--edge-width) solid var(--edge);background:var(--surface-2)}.say-this .label{display:block;font-size:.72rem;font-weight:750;text-transform:uppercase;letter-spacing:.07em;color:var(--muted);margin-bottom:10px}.say-this__sentence{margin:0;font-family:var(--font-display);font-size:clamp(1.15rem,.9rem + 1.1vw,1.5rem);line-height:1.75;color:var(--text)}.say-this__tr{margin:10px 0 0;font-size:.9rem;color:var(--muted)}.said{display:inline}.said+.said:before{content:" "}.said--match{color:var(--text)}.said--missed{color:var(--muted);text-decoration:line-through;text-decoration-thickness:2px}.said--substituted{color:var(--bad-ink);font-weight:700;text-decoration:underline wavy;text-underline-offset:4px}.said__heard{display:inline-block;vertical-align:baseline;font-family:var(--font);font-size:.72em;font-weight:600;font-style:normal;color:var(--bad-ink);background:var(--bad-soft);border:var(--edge-width) solid var(--edge);border-radius:var(--radius-pill);padding:1px 8px;margin-left:6px;text-decoration:none;white-space:nowrap}.record{font-size:1.05rem;padding:16px 22px}.record--on{background:var(--bad);color:var(--on-signal);animation:listening 1.4s ease-in-out infinite}@keyframes listening{50%{background:color-mix(in srgb,var(--bad) 72%,var(--surface))}}.chip-say{cursor:pointer;font:inherit;font-size:.92rem;font-weight:600}.chip-say:hover:not(:disabled){background:var(--surface-2)}.chip-say:disabled{opacity:.5;cursor:not-allowed}.yours-plain{margin-top:10px;padding-top:10px;border-top:1px solid var(--border);color:var(--muted);font-size:.9rem}.paraphrase-original{padding:18px 20px;border-radius:var(--radius-sm);background:var(--surface-2);border:var(--edge-width) solid var(--edge)}.paraphrase-original .label{display:block;font-size:.72rem;font-weight:750;text-transform:uppercase;letter-spacing:.07em;color:var(--muted);margin-bottom:10px}.paraphrase-original p{margin:0;font-size:1.12rem;line-height:1.75;color:var(--text)}.paraphrase-original mark{background:var(--accent);color:var(--accent-text);font-weight:750;padding:2px 8px;border-radius:var(--radius-pill);text-decoration:underline;text-underline-offset:3px}.pos-inline{font-style:italic}.chosen-word{display:inline-block;margin-left:10px;padding:3px 12px;border-radius:999px;background:color-mix(in srgb,currentColor 16%,transparent);font-weight:700}.alternatives{margin-top:14px}.alternatives .label{display:block;font-size:.72rem;font-weight:750;text-transform:uppercase;letter-spacing:.07em;color:var(--muted);margin-bottom:8px}.chip-static{padding:6px 14px;border-radius:var(--radius-pill);background:var(--surface);border:var(--edge-width) solid var(--edge);color:var(--text);font-size:.92rem;font-weight:600}.gap-sentence{font-size:1.25rem;line-height:2.1;text-align:center;margin:20px 0;font-weight:550}.blank{display:inline-block;min-width:7ch;padding:0 8px;margin:0 3px;font-weight:800;text-align:center;border-bottom:3px solid var(--edge);color:var(--text)}.blank.right{border-color:var(--ok);color:var(--ok-ink)}.blank.wrong{border-color:var(--bad);color:var(--bad-ink)}.gap-clue{display:flex;align-items:center;justify-content:center;gap:12px;flex-wrap:wrap;font-size:.92rem;color:var(--muted);margin-bottom:18px}.gap-form{display:flex;gap:10px}.gap-form input{flex:1;font-size:1.08rem;font-weight:650}.flashcard{min-height:280px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;cursor:pointer;text-align:center;-webkit-user-select:none;user-select:none}.flashcard .front{font-family:var(--font-display);font-size:clamp(2rem,1.5rem + 2.6vw,2.8rem);font-weight:400;letter-spacing:-.03em}.flashcard .back{font-size:1.7rem;font-weight:750;color:var(--accent-ink)}.flashcard .hint{font-size:.85rem;color:var(--muted);font-weight:600}.flashcard .sample{font-size:.92rem;color:var(--muted);max-width:44ch}.ratings{display:grid;grid-template-columns:repeat(4,1fr);gap:9px;margin-top:16px}.ratings button{padding:13px 6px;border-radius:var(--radius-sm);border:var(--edge-width) solid var(--edge);background:var(--surface);color:var(--text);cursor:pointer;font-weight:750;font-size:.9rem;display:flex;flex-direction:column;gap:3px;align-items:center;box-shadow:2px 2px 0 var(--edge);transition:transform .08s ease,box-shadow .08s ease,background .15s}.ratings button small{font-weight:500;font-size:.71rem;color:var(--muted)}.ratings button:hover{background:var(--surface-2)}.ratings button:active{transform:translate(2px,2px);box-shadow:0 0 0 var(--edge)}.ratings button.again:hover{background:var(--bad-soft)}.ratings button.good:hover,.ratings button.easy:hover{background:var(--ok-soft)}.match-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}.match-col{display:grid;gap:9px;align-content:start}.match-col 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var(--border);white-space:nowrap}th{font-size:.72rem;text-transform:uppercase;letter-spacing:.08em;color:var(--muted);font-weight:750}tbody tr:last-child td{border-bottom:none}tbody tr.clickable{cursor:pointer}tbody tr.clickable:hover{background:var(--surface-2)}td.num{text-align:right;font-variant-numeric:tabular-nums;font-weight:650}.tag{display:inline-block;font-size:.72rem;font-weight:750;padding:3px 10px;border-radius:var(--radius-pill);border:var(--edge-width) solid var(--edge);background:var(--surface-2);color:var(--muted)}.tag.learned{background:var(--ok-soft);color:var(--ok-ink)}.tag.learning{background:var(--warn-soft);color:var(--warn-ink)}.tag.access-active{background:var(--ok-soft);color:var(--ok-ink)}.tag.access-trial{background:var(--accent-soft);color:var(--accent-ink)}.tag.access-expired{background:var(--bad-soft);color:var(--bad-ink)}.tag.access-none{background:var(--surface-2);color:var(--muted)}.code{font-family:Cascadia 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var(--edge);background:var(--surface);color:var(--text);cursor:pointer;font-weight:750;font-size:.92rem;box-shadow:2px 2px 0 var(--edge);transition:transform .08s ease,box-shadow .08s ease,background .14s}.roles button:disabled{opacity:.45;cursor:not-allowed}.roles button:hover:not(:disabled){background:var(--surface-2)}.roles button[aria-pressed=true]{background:var(--accent);color:var(--accent-text);transform:translate(2px,2px);box-shadow:0 0 0 var(--edge)}.hint-box{margin-top:22px;padding:14px 16px;border-radius:var(--radius-sm);background:var(--surface-2);border:var(--edge-width) dashed var(--edge);font-size:.83rem;color:var(--muted);line-height:1.6}.hint-box b{color:var(--text)}.access-banner{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;padding:15px 18px;border-radius:var(--radius-sm);margin-bottom:22px;font-size:.93rem;font-weight:600;border:var(--edge-width) solid 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