:root {
    --lg-hh: var(--ej-header-h, 68px);
    --lg-green: #15803d;
    --lg-green-dk: #16a34a;
    --lg-green-lt: #f0fdf4;
    --lg-indigo: #4f46e5;
    --lg-indigo-dk: #4338ca;
    --lg-indigo-lt: #e0e7ff;
    --lg-amber: #f59e0b;
    --lg-amber-lt: #fef3c7;
    --lg-red: #ef4444;
    --lg-red-lt: #fef2f2;
    --lg-bg: #f8fafc;
    --lg-surface: #ffffff;
    --lg-border: #e2e8f0;
    --lg-border-hi: #cbd5e1;
    --lg-ink: #0f172a;
    --lg-ink-2: #475569;
    --lg-ink-3: #94a3b8;
    --lg-radius: 12px;
    --lg-font: 'Sora', sans-serif;
    --lg-mono: 'JetBrains Mono', monospace;
}

.lg-grid-bg {
    position: fixed; inset: 0; pointer-events: none; z-index: 0;
    background-image:
        linear-gradient(rgba(79,70,229,.035) 1px, transparent 1px),
        linear-gradient(90deg, rgba(79,70,229,.035) 1px, transparent 1px);
    background-size: 40px 40px;
}

.lg-shell {
    position: relative; margin-top: 0; 
    min-height: calc(100vh - var(--lg-hh));
    background: var(--lg-bg); display: flex; flex-direction: column;
    z-index: 10; font-family: var(--lg-font); color: var(--lg-ink); box-sizing: border-box;
}

.lg-shell * { box-sizing: border-box; }

.lg-completed-banner {
    display:flex; align-items:center; gap:14px; flex-wrap:wrap;
    background:var(--lg-green-lt); border:2px solid var(--lg-green);
    border-radius:var(--lg-radius); padding:16px 20px;
    width:calc(100% - 40px); max-width:960px; margin:16px auto 0;
}
.lg-completed-banner__icon { font-size:1.6rem; line-height:1; }
.lg-completed-banner__body { flex:1; min-width:200px; }
.lg-completed-banner__title { font-weight:900; color:var(--lg-green-dk); margin-bottom:2px; }
.lg-completed-banner__sub { font-size:.85rem; color:var(--lg-ink-2); margin:0; }
.lg-completed-banner__actions { display:flex; gap:10px; flex-wrap:wrap; }

.lg-topbar {
    background: var(--lg-surface); border-bottom: 2px solid var(--lg-border);
    padding: 12px 20px; position: sticky; top: 0; z-index: 30;
}
.lg-topbar-inner { max-width: 1000px; margin: 0 auto; display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.lg-progress-bar { flex: 1; height: 14px; background: var(--lg-border); border-radius: 20px; position: relative; overflow: visible; }
.lg-progress-fill {
    height: 100%; width: 0%; background: var(--lg-amber); border-radius: 20px;
    transition: width 0.3s cubic-bezier(0.4, 0, 0.2, 1); position: relative;
}
.lg-progress-fill.active::after {
    content: ''; position: absolute; right: -4px; top: 50%; transform: translateY(-50%);
    width: 10px; height: 10px; background: #fff; border: 3px solid var(--lg-amber);
    border-radius: 50%; box-shadow: 0 0 8px var(--lg-amber);
}
.lg-topbar-stats { display: flex; align-items: center; gap: 14px; }
.lg-stat-pill { padding: 6px 12px; background: var(--lg-border); border-radius: 20px; font-size: 14px; font-weight: 600; display: flex; align-items: center; gap: 6px; }
#lgXpPill { background: var(--lg-amber-lt); color: #b45309; }
.lg-hearts-wrap { display: flex; gap: 4px; }
.lg-heart { font-size: 18px; transition: transform 0.2s; display: inline-block; }
.lg-heart.lost { filter: grayscale(1) opacity(0.3); transform: scale(0.8); }

.lg-chapters { flex: 1; position: relative; }
.lg-chapter {
    display: none; padding: 28px 20px 80px; flex-direction: column; align-items: center;
    animation: lgSlide .3s cubic-bezier(.4,0,.2,1) forwards; max-width: 900px; margin: 0 auto; width: 100%;
}
.lg-chapter.active { display: flex; }

@keyframes lgSlide {
    from { opacity: 0; transform: translateY(12px); }
    to { opacity: 1; transform: translateY(0); }
}

.lg-inner { width: 100%; max-width: 900px; }

.lg-eyebrow {
    display: inline-block; padding: 4px 12px; background: var(--lg-indigo-lt); color: var(--lg-indigo);
    border-radius: 20px; font-size: 12px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.05em; margin-bottom: 12px;
}
.lg-title { font-size: 28px; font-weight: 700; margin: 0 0 8px; line-height: 1.2; }
.lg-subtitle { font-size: 16px; color: var(--lg-ink-2); margin: 0 0 24px; line-height: 1.5; }

.lg-jp-block {
    background: var(--lg-indigo-lt); border-left: 4px solid var(--lg-indigo); padding: 16px;
    border-radius: 0 var(--lg-radius) var(--lg-radius) 0; margin-bottom: 24px; font-size: 14px; line-height: 1.6; color: var(--lg-indigo-dk);
}

.lg-phrase-list { display: flex; flex-direction: column; gap: 16px; margin: 24px 0; }
.lg-phrase-card { background: var(--lg-surface); border: 2px solid var(--lg-border); border-bottom: 5px solid var(--lg-border-hi); border-radius: var(--lg-radius); padding: 18px; transition: transform 0.15s; }
.lg-phrase-card:hover { transform: translateY(-1px); }
.lg-phrase-en { font-size: 18px; font-weight: 600; color: var(--lg-indigo); margin-bottom: 6px; }
.lg-phrase-jp { font-size: 14px; color: var(--lg-ink-2); }

.lg-tips { list-style: none; padding: 0; margin: 24px 0; display: flex; flex-direction: column; gap: 14px; }
.lg-tips li { background: var(--lg-surface); border: 1px solid var(--lg-border); padding: 14px 16px; border-radius: var(--lg-radius); font-size: 14px; line-height: 1.6; display: flex; gap: 12px; align-items: flex-start; }
.lg-tips li::before { content: attr(data-emoji); font-size: 18px; flex-shrink: 0; }

.lg-example-block { background: var(--lg-surface); border: 2px dashed var(--lg-indigo); border-radius: var(--lg-radius); padding: 20px; margin: 24px 0; text-align: center; }
.lg-example-text { font-size: 18px; font-weight: 700; color: var(--lg-ink); margin-bottom: 8px; line-height: 1.5; }
.lg-example-translation { font-size: 14px; color: var(--lg-ink-2); }

/* Compare Cards and Mistake Blocks */
.lg-compare { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin: 16px 0 32px; }
.lg-compare-card { border-radius: var(--lg-radius); padding: 16px; font-size: 14px; line-height: 1.6; border: 1px solid var(--lg-border); background: var(--lg-surface); }
.lg-compare-bad { background: var(--lg-red-lt); color: #7f1d1d; border-left: 4px solid var(--lg-red); }
.lg-compare-good { background: var(--lg-green-lt); color: #14532d; border-left: 4px solid var(--lg-green); }
.lg-compare-card .lg-label { font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.06em; opacity: 0.8; margin-bottom: 6px; }

.lg-mistake-block { border-radius: var(--lg-radius); overflow: hidden; margin-bottom: 20px; border: 1px solid var(--lg-border); display: flex; flex-direction: column; }
.lg-mistake-wrong { background: var(--lg-red-lt); padding: 12px 16px; }
.lg-mistake-correct { background: var(--lg-green-lt); padding: 12px 16px; border-top: 1px solid var(--lg-border); border-bottom: 1px solid var(--lg-border); }
.lg-mistake-jp { background: var(--lg-surface); font-size: 13px; color: var(--lg-ink-2); padding: 12px 16px; line-height: 1.6; }
.lg-mistake-block .m-label { font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.06em; margin-bottom: 4px; }
.lg-mistake-wrong .m-label { color: var(--lg-red); }
.lg-mistake-correct .m-label { color: var(--lg-green-dk); }
.lg-mistake-block .m-body { font-size: 15px; font-weight: 500; line-height: 1.5; color: var(--lg-ink); }

.lg-dialogue { display: flex; flex-direction: column; gap: 14px; margin: 24px 0; }
.lg-dia-row { display: flex; flex-direction: column; max-width: 85%; }
.lg-dia-them { align-self: flex-start; align-items: flex-start; }
.lg-dia-you { align-self: flex-end; align-items: flex-end; }
.lg-dia-name { font-size: 11px; font-weight: 700; color: var(--lg-indigo); text-transform: uppercase; letter-spacing: 0.05em; margin: 0 8px 4px; }
.lg-dia-bubble {
    border-radius: var(--lg-radius); padding: 12px 16px; line-height: 1.5;
    border: 2px solid var(--lg-border); border-bottom: 4px solid var(--lg-border-hi);
}
.lg-dia-them .lg-dia-bubble { background: var(--lg-surface); border-bottom-left-radius: 4px; }
.lg-dia-you .lg-dia-bubble { background: var(--lg-indigo-lt); border-color: var(--lg-indigo); border-bottom-color: var(--lg-indigo-dk); border-bottom-right-radius: 4px; }

.lg-dia-en-row { display: flex; justify-content: space-between; align-items: flex-start; gap: 12px; }
.lg-dia-en { font-size: 15px; font-weight: 600; color: var(--lg-ink); flex: 1; }
.lg-dia-you .lg-dia-en { color: var(--lg-indigo-dk); }
.lg-dia-jp { font-size: 12px; color: var(--lg-ink-2); margin-top: 8px; }

.lg-listen-btn {
    width: 26px; height: 26px; border-radius: 50%;
    background: var(--lg-indigo-lt); border: 2px solid var(--lg-indigo);
    display: grid; place-items: center; font-size: 12px;
    cursor: pointer; flex-shrink: 0; transition: transform .12s;
}
.lg-dia-you .lg-listen-btn { background: #fff; border-color: var(--lg-indigo-dk); }
.lg-listen-btn:hover { transform: scale(1.12); }

.lg-scene-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(140px, 1fr)); gap: 14px; margin: 24px 0; }
.lg-scene-item { background: var(--lg-surface); border: 2px solid var(--lg-border); border-bottom: 5px solid var(--lg-border-hi); border-radius: var(--lg-radius); padding: 16px; text-align: center; cursor: pointer; position: relative; user-select: none; transition: all 0.15s ease; }
.lg-scene-item:active { transform: translateY(3px); border-bottom-width: 2px; }
.lg-scene-item.done { border-color: var(--lg-green); border-bottom-color: var(--lg-green-dk); background: var(--lg-green-lt); }
.lg-scene-item__check { position: absolute; top: 6px; right: 8px; color: var(--lg-green); font-weight: bold; font-size: 14px; opacity: 0; transform: scale(0.5); transition: all 0.2s ease; }
.lg-scene-item.done .lg-scene-item__check { opacity: 1; transform: scale(1); }
.lg-scene-item__emoji { font-size: 28px; display: block; margin-bottom: 6px; }
.lg-scene-item__en { font-size: 14px; font-weight: 600; display: block; margin-bottom: 4px; }
.lg-scene-item__jp { font-size: 11px; color: var(--lg-ink-2); display: block; }
.lg-scene-item__time { display: inline-block; margin-top: 8px; padding: 2px 6px; background: var(--lg-border); border-radius: 8px; font-size: 10px; font-weight: 600; color: var(--lg-ink-2); }
.lg-scene-progress { text-align: center; font-size: 14px; font-weight: 600; color: var(--lg-ink-2); margin-top: 12px; }

.lg-game-card { background: var(--lg-surface); border: 2px solid var(--lg-border); border-radius: var(--lg-radius); padding: 24px; box-shadow: 0 4px 6px -1px rgba(0,0,0,0.05); width: 100%; }
.lg-feedback-strip { min-height: 48px; margin-top: 20px; padding: 12px; border-radius: var(--lg-radius); text-align: center; font-size: 14px; font-weight: 600; display: none; }
.lg-feedback-strip.correct { display: block; background: var(--lg-green-lt); color: var(--lg-green-dk); border: 1px solid var(--lg-green); }
.lg-feedback-strip.wrong { display: block; background: var(--lg-red-lt); color: var(--lg-red); border: 1px solid var(--lg-red); }
.lg-combo-banner { text-align: center; font-size: 12px; font-weight: 700; color: var(--lg-amber); text-transform: uppercase; letter-spacing: 0.05em; height: 16px; margin-bottom: 8px; }
.lg-game-done-state { display: none; text-align: center; padding: 20px 0; }
.lg-game-done-state.active { display: block; }

.lg-vt-sentence-box { background: var(--lg-bg); padding: 20px; border-radius: var(--lg-radius); text-align: center; margin-bottom: 20px; border: 1px solid var(--lg-border); }
.lg-vt-sentence { font-size: 20px; font-weight: 600; line-height: 1.5; color: var(--lg-ink); }
.lg-vt-blank { display: inline-block; min-width: 70px; border-bottom: 3px solid var(--lg-ink); padding: 0 6px; color: var(--lg-indigo); font-weight: 700; }
.lg-vt-blank.filled { border-bottom: none; animation: popIn 0.2s cubic-bezier(0.18, 0.89, 0.32, 1.28); }
.lg-vt-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.lg-vt-btn { background: var(--lg-surface); border: 2px solid var(--lg-border); border-bottom: 5px solid var(--lg-border-hi); border-radius: var(--lg-radius); padding: 14px; font-size: 16px; font-weight: 600; cursor: pointer; text-align: center; font-family: var(--lg-font); transition: all 0.1s; }
.lg-vt-btn:active:not(:disabled) { transform: translateY(3px); border-bottom-width: 2px; }
.lg-vt-btn.correct { background: var(--lg-green-lt)!important; border-color: var(--lg-green)!important; border-bottom-color: var(--lg-green-dk)!important; color: var(--lg-green-dk); }
.lg-vt-btn.wrong { background: var(--lg-red-lt)!important; border-color: var(--lg-red)!important; border-bottom-color: var(--lg-red)!important; color: var(--lg-red); }
.lg-vt-action-area { display: flex; justify-content: center; margin-top: 16px; }
.lg-vt-continue-btn { display: none; background: var(--lg-green); color: #fff; border: none; border-bottom: 4px solid var(--lg-green-dk); padding: 12px 32px; font-size: 15px; font-weight: 700; border-radius: var(--lg-radius); cursor: pointer; font-family: var(--lg-font); transition: all 0.1s; }
.lg-vt-continue-btn:active { transform: translateY(2px); border-bottom-width: 2px; }

@keyframes popIn { from { transform: scale(0.8); opacity: 0; } to { transform: scale(1); opacity: 1; } }
@keyframes shake { 0%,100% {transform:translateX(0);} 20%,60% {transform:translateX(-6px);} 40%,80% {transform:translateX(6px);} }
.shake { animation: shake 0.4s ease-in-out; }

.lg-sort-pool { background: var(--lg-bg); border: 2px dashed var(--lg-border-hi); border-radius: var(--lg-radius); padding: 16px; min-height: 90px; display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; align-items: center; margin-bottom: 24px; }
.lg-sort-chip { background: var(--lg-surface); border: 2px solid var(--lg-border); border-bottom: 4px solid var(--lg-border-hi); padding: 12px 16px; border-radius: var(--lg-radius); cursor: pointer; user-select: none; transition: all 0.1s; display: flex; flex-direction: column; gap: 2px; text-align: center; }
.lg-sort-chip:active { transform: translateY(2px); border-bottom-width: 2px; }
.lg-sort-chip.active-sort { border-color: var(--lg-indigo); background: var(--lg-indigo-lt); color: var(--lg-indigo-dk); }
.lg-sort-chip-en { font-size: 14px; font-weight: 600; color: var(--lg-ink); }
.lg-sort-chip-jp { font-size: 11px; color: var(--lg-ink-2); }
.lg-sort-columns { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 12px; }
.lg-sort-col { background: var(--lg-bg); border: 2px solid var(--lg-border); border-radius: var(--lg-radius); padding: 12px 8px; min-height: 180px; display: flex; flex-direction: column; gap: 8px; align-items: center; cursor: pointer; transition: background 0.2s; }
.lg-sort-col:hover { background: var(--lg-indigo-lt); }
.lg-sort-col-title { font-size: 12px; font-weight: 700; text-transform: uppercase; color: var(--lg-ink-2); margin-bottom: 6px; text-align: center; }
.lg-sort-chip.correct-placed { background: var(--lg-green-lt); border-color: var(--lg-green); border-bottom-width: 2px; cursor: default; pointer-events: none; }
.lg-sort-chip.correct-placed .lg-sort-chip-en { color: var(--lg-green-dk); }
.lg-sort-chip.wrong-placed { background: var(--lg-red-lt); border-color: var(--lg-red); color: var(--lg-red); animation: shake 0.4s; }

.lg-qq-q { font-size: 18px; font-weight: 700; text-align: center; margin-bottom: 18px; line-height: 1.4; }
.lg-qq-opts { display: flex; flex-direction: column; gap: 10px; }
.lg-qq-opt { background: var(--lg-surface); border: 2px solid var(--lg-border); border-bottom: 4px solid var(--lg-border-hi); padding: 14px 16px; border-radius: var(--lg-radius); font-size: 14px; font-weight: 500; text-align: left; cursor: pointer; font-family: var(--lg-font); transition: all 0.1s; }
.lg-qq-opt:active:not(:disabled) { transform: translateY(2px); border-bottom-width: 2px; }
.lg-qq-opt.correct { background: var(--lg-green-lt)!important; border-color: var(--lg-green)!important; border-bottom-color: var(--lg-green-dk)!important; color: var(--lg-green-dk); font-weight: 600; }
.lg-qq-opt.wrong { background: var(--lg-red-lt)!important; border-color: var(--lg-red)!important; border-bottom-color: var(--lg-red)!important; color: var(--lg-red); }

.lg-xp-toast { position: fixed; top: 18%; left: 50%; transform: translateX(-50%); background: var(--lg-amber); color: #fff; padding: 8px 16px; font-weight: 700; border-radius: 20px; box-shadow: 0 4px 12px rgba(245,158,11,0.4); z-index: 9999; pointer-events: none; animation: toastUp 1.2s forwards; }

.lg-nav { background: var(--lg-surface); border-top: 2px solid var(--lg-border); padding: 16px 20px; z-index: 30; }
.lg-nav-inner { max-width: 1000px; margin: 0 auto; display: flex; align-items: center; justify-content: space-between; gap: 20px; }
.lg-nav-back { background: transparent; border: 2px solid var(--lg-border); padding: 12px 24px; font-size: 14px; font-weight: 600; border-radius: var(--lg-radius); color: var(--lg-ink-2); cursor: pointer; font-family: var(--lg-font); transition: all 0.1s; }
.lg-nav-back:hover:not(:disabled) { background: var(--lg-bg); border-color: var(--lg-border-hi); }
.lg-nav-back:disabled { opacity: 0.4; cursor: not-allowed; }

.lg-dots { display: flex; gap: 6px; }
.lg-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--lg-border); transition: all 0.2s; }
.lg-dot.active { background: var(--lg-indigo); transform: scale(1.2); }
.lg-dot.done { background: var(--lg-indigo-lt); border: 1px solid var(--lg-indigo); }

.lg-nav-next { background: var(--lg-green); color: #fff; border: none; border-bottom: 4px solid var(--lg-green-dk); padding: 12px 32px; font-size: 15px; font-weight: 700; border-radius: var(--lg-radius); cursor: pointer; font-family: var(--lg-font); transition: all 0.1s; }
.lg-nav-next:active:not(:disabled) { transform: translateY(3px); border-bottom-width: 1px; }
.lg-nav-next:disabled { background: var(--lg-border); border-bottom-color: var(--lg-border-hi); color: var(--lg-ink-3); cursor: not-allowed; transform: none; }

.lg-gameover { position: absolute; inset: 0; background: rgba(248,250,252,0.96); z-index: 100; display: none; flex-direction: column; align-items: center; justify-content: center; padding: 20px; text-align: center; }
.lg-gameover.active { display: flex; }
.lg-gameover-card { background: #fff; padding: 32px; border-radius: var(--lg-radius); border: 2px solid var(--lg-border); max-width: 400px; width: 100%; box-shadow: 0 10px 25px -5px rgba(0,0,0,0.05); }
.lg-go-title { font-size: 24px; font-weight: 700; color: var(--lg-red); margin: 0 0 8px; }
.lg-go-sub { font-size: 14px; color: var(--lg-ink-2); margin: 0 0 24px; }
.lg-revive-btn { background: var(--lg-green); color: #fff; border: none; border-bottom: 4px solid var(--lg-green-dk); padding: 12px 28px; font-size: 15px; font-weight: 700; border-radius: var(--lg-radius); cursor: pointer; font-family: var(--lg-font); }
.lg-revive-btn:active { transform: translateY(3px); border-bottom-width: 1px; }

@media (max-width: 640px) {
    .lg-vt-grid { grid-template-columns: 1fr; }
    .lg-sort-columns { grid-template-columns: 1fr; }
    .lg-dots { display: none; }
    .lg-compare { grid-template-columns: 1fr; }
}

body:has(.lg-shell) .lejp-recommendation-circuit,
body:has(.lg-shell) #ej-rating-portal > .ej-rating,
body:has(.lg-shell) #ej-rating-portal .ej-rating,
body.single-lesson .lejp-recommendation-circuit,
body.single-lesson #ej-rating-portal > .ej-rating,
body.single-lesson #ej-rating-portal .ej-rating { max-width: 1000px; margin-left: auto; margin-right: auto; box-sizing: border-box; }
body:has(.lg-shell) .lejp-recommendation-circuit,
body:has(.lg-shell) #ej-rating-portal,
body.single-lesson .lejp-recommendation-circuit,
body.single-lesson #ej-rating-portal { padding-left: 20px; padding-right: 20px; }
body:has(.lg-shell) #ej-rating-portal .ej-rating,
body.single-lesson #ej-rating-portal .ej-rating { width: 100%; }