:root{--verb-bg:#fafafa;--verb-text:#1c1c1e;--verb-muted:#6e6e73;--verb-accent:#2086ae;--verb-highlight:#ffe066;--verb-user-bubble:#e5e5ea;--verb-input-bg:#e8e8ed;--verb-border-radius:24px;--verb-spacing-xs:4px;--verb-spacing-sm:8px;--verb-spacing-md:16px;--verb-spacing-lg:24px;--verb-spacing-xl:32px;--verb-shadow-sm:0 1px 2px #0000000d;--verb-shadow-md:0 8px 24px #0000000f;--verb-shadow-lg:0 16px 40px #0000001a;--verb-success:#34c759;--verb-warning:#ff9500;--verb-error:#ff3b30}*{box-sizing:border-box;margin:0;padding:0}html,body{height:100%;color:var(--verb-text);background-color:var(--verb-bg);font-family:-apple-system,BlinkMacSystemFont,SF Pro Text,SF Pro,Segoe UI,Roboto,Helvetica,Arial,sans-serif;font-size:16px;line-height:1.5}button,input,textarea,select{font:inherit}button:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible{outline:2px solid var(--verb-accent);outline-offset:2px}
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.review-timeline-point{margin-left:-22px}.review-timeline-mobile-time{color:var(--verb-text);white-space:nowrap;font-size:13px;font-weight:700}.review-timeline-mobile-absolute{color:var(--verb-muted);min-width:0;font-size:12px}.review-timeline-mobile-tooltip{z-index:5;position:absolute;top:34px;left:20px}.review-timeline-mobile-tooltip .review-timeline-tooltip{position:static;transform:none}}.root-annotation{background:var(--verb-highlight);border-radius:8px;margin-top:12px;padding:8px 12px;font-size:14px;line-height:1.6}.root-annotation .label{color:var(--verb-text);margin-right:8px;font-weight:500}.root-badge{margin-right:12px;display:inline-block}.root-badge em{color:var(--verb-text);font-style:italic;font-weight:500}.progress-bar{background:var(--verb-input-bg);border-radius:3px;width:100%;height:6px;margin-bottom:12px;overflow:hidden}.progress-fill{background:var(--verb-accent);height:100%;transition:width .3s}.status-badge{background:#2086ae1a;border-radius:6px;padding:4px 8px;font-size:12px;font-weight:500;display:inline-block}.chapter-empty-prompt{min-height:min(460px,70vh);padding:var(--verb-spacing-xl) var(--verb-spacing-md);text-align:center;flex-direction:column;justify-content:center;align-items:center;display:flex}.chapter-empty-prompt h1{color:var(--verb-text);margin-bottom:8px;font-size:24px;font-weight:700;line-height:1.2}.chapter-empty-prompt p{max-width:420px;color:var(--verb-muted);font-size:15px;line-height:1.5}.chapter-empty-prompt .chapter-notice{color:var(--verb-text);margin-bottom:12px;font-weight:600}
@media (max-width:800px){.mcq-option-bar,.writing-toolbar{max-width:100%}}.writing-toolbar{background:#fff;border:1px solid #e5e5ea;border-bottom:none;border-radius:16px 16px 0 0;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:8px;padding:8px 16px;display:flex}.writing-toolbar+.input-bar{border-radius:0 0 24px 24px}.exercise-card{border-radius:var(--verb-border-radius);padding:var(--verb-spacing-lg);margin-bottom:var(--verb-spacing-md);box-shadow:var(--verb-shadow-md);background-color:#fff}.exercise-type-label{letter-spacing:.8px;color:var(--verb-muted);text-transform:uppercase;margin-bottom:var(--verb-spacing-sm);font-size:12px;font-weight:600}.exercise-prompt{color:var(--verb-text);font-size:18px;line-height:1.6}.exercise-prompt:not(:last-child){margin-bottom:var(--verb-spacing-lg)}.exercise-submit-btn{width:100%;padding:14px var(--verb-spacing-md);background-color:var(--verb-accent);color:#fff;cursor:pointer;margin-top:var(--verb-spacing-md);border:none;border-radius:12px;font-size:16px;font-weight:600;transition:background-color .15s}.exercise-submit-btn:hover:not(:disabled){background-color:#1a6f91}.exercise-submit-btn:disabled{background-color:var(--verb-muted);cursor:not-allowed;opacity:.6}.matching-columns{justify-content:space-between;gap:var(--verb-spacing-lg);margin-bottom:var(--verb-spacing-md);display:flex;position:relative}.matching-column{gap:var(--verb-spacing-sm);flex-direction:column;flex:none;min-width:120px;max-width:45%;display:flex}.matching-item{padding:var(--verb-spacing-sm) var(--verb-spacing-md);border:2px solid var(--verb-input-bg);color:var(--verb-text);cursor:pointer;text-align:left;background-color:#fff;border-radius:8px;font-family:inherit;font-size:15px;transition:all .15s}.matching-item:hover:not(:disabled){border-color:var(--verb-accent)}.matching-item.active{border-color:var(--verb-accent);color:var(--verb-accent);background-color:#2086ae1a;font-weight:500}.matching-item.connected{border-color:var(--verb-accent);background-color:#2086ae0f}.matching-item.targetable{background-color:#2086ae08;border-color:#2086ae4d}.matching-item:disabled{opacity:.6;cursor:not-allowed}.matching-svg-overlay{pointer-events:none;width:100%;height:100%;position:absolute;top:0;left:0}.matching-line{stroke:var(--verb-accent);stroke-width:2px;pointer-events:stroke;cursor:pointer;transition:stroke-width .15s}.matching-line:hover{stroke-width:3.5px}.fill-blank-prompt{margin-bottom:var(--verb-spacing-md)}.etymology-prompt{text-align:center}.etymology-instruction{color:var(--verb-muted);margin-bottom:var(--verb-spacing-md);font-size:16px}.etymology-root{margin-bottom:var(--verb-spacing-sm);font-size:24px;font-weight:600}.root-word{color:var(--verb-text)}.root-meaning{color:var(--verb-muted);margin-left:var(--verb-spacing-sm);font-size:18px;font-weight:400}.etymology-example{color:var(--verb-muted);margin-top:var(--verb-spacing-sm);font-size:15px}.fill-blank-input-container{margin-bottom:var(--verb-spacing-md)}.fill-blank-input{width:100%;padding:14px var(--verb-spacing-md);border:2px solid var(--verb-input-bg);background-color:#fff;border-radius:12px;font-family:inherit;font-size:16px;transition:border-color .15s}.fill-blank-input:hover:not(:disabled){border-color:var(--verb-accent)}.fill-blank-input:focus{border-color:var(--verb-accent);outline:none}.fill-blank-input:disabled{opacity:.6;cursor:not-allowed}.word-building-instruction{color:var(--verb-muted);margin-bottom:var(--verb-spacing-lg);font-size:16px}.word-building-parts{margin-bottom:var(--verb-spacing-lg)}.parts-label,.selected-label,.input-label{color:var(--verb-muted);margin-bottom:var(--verb-spacing-sm);text-transform:uppercase;letter-spacing:.5px;font-size:13px;font-weight:500}.parts-container{gap:var(--verb-spacing-sm);flex-wrap:wrap;display:flex}.word-part-chip{padding:var(--verb-spacing-sm) var(--verb-spacing-md);background-color:var(--verb-input-bg);color:var(--verb-text);border:2px solid #0000;border-radius:8px;font-size:15px;font-weight:500;display:inline-block}.word-building-hint{color:var(--verb-muted);margin-bottom:var(--verb-spacing-md);font-size:15px;line-height:1.5}.hint-label{color:var(--verb-text);font-weight:600}.writing-scenario{color:var(--verb-primary);margin-bottom:12px;font-size:15px;line-height:1.5}.writing-target-words{flex-wrap:wrap;align-items:center;gap:8px;margin-bottom:4px;display:flex}.target-words-label{color:var(--verb-secondary);font-size:13px;font-weight:500}.target-words-list{flex-wrap:wrap;gap:6px;display:flex}.target-word-chip{background:var(--verb-highlight);color:var(--verb-primary);border-radius:12px;padding:2px 10px;font-size:13px;font-weight:500;transition:background .2s,color .2s;display:inline-block}.target-word-chip.word-used{color:#fff;background:#34c759}.writing-word-count-requirement{color:var(--verb-secondary);margin-bottom:8px;font-size:13px}.writing-input-container{margin-bottom:16px}.writing-textarea{resize:vertical;background:#fff;border:1px solid #e5e5ea;border-radius:10px;width:100%;min-height:120px;padding:12px;font-family:inherit;font-size:15px;line-height:1.5}.writing-textarea:hover:not(:disabled){border-color:#c7c7cc}.writing-textarea:focus{border-color:var(--verb-accent);outline:none}.writing-textarea:disabled{opacity:.6;cursor:not-allowed}.writing-word-count{text-align:right;color:var(--verb-secondary);margin-top:4px;font-size:12px}.writing-word-count.count-red{color:#ff3b30}.writing-word-count.count-orange{color:#ff9500}.writing-word-count.count-green{color:#34c759}.cloze-sentence{font-size:18px;line-height:2.2}.cloze-blank-input{font-size:inherit;border:none;border-bottom:2px solid var(--verb-accent);text-align:center;background:0 0;outline:none;width:120px;padding:2px 4px;font-family:inherit}.cloze-blank-input:focus{border-bottom-color:var(--verb-accent);background:#2086ae0d}.cloze-hint{color:var(--verb-muted);margin-top:12px;font-size:14px;font-style:italic}.definition-word-line{flex-wrap:wrap;align-items:baseline;gap:8px;margin-bottom:8px;display:flex}.definition-word{color:var(--verb-text);overflow-wrap:anywhere;min-width:0;font-size:24px;font-weight:700}.definition-pos{color:var(--verb-muted);font-size:16px;font-weight:400}.definition-context{color:var(--verb-muted);margin-top:4px;font-size:15px}.difference-words{flex-wrap:wrap;align-items:baseline;gap:12px;margin-top:8px;display:flex}.difference-word{color:var(--verb-text);overflow-wrap:anywhere;min-width:0;font-size:22px;font-weight:700}.difference-vs{color:var(--verb-muted);flex-shrink:0;font-size:15px;font-style:italic;font-weight:400}.mcq-options-list{flex-direction:column;gap:6px;display:flex}.mcq-option-row{border:1px solid var(--verb-input-bg);border-radius:10px;align-items:center;gap:12px;padding:10px 14px;display:flex}.mcq-option-number{background:var(--verb-input-bg);width:24px;height:24px;color:var(--verb-muted);border-radius:6px;flex-shrink:0;justify-content:center;align-items:center;font-size:13px;font-weight:600;display:flex}.mcq-option-bar{flex-direction:column;gap:6px;width:100%;max-width:800px;margin:0 auto;display:flex}.mcq-option-btn{background:var(--verb-input-bg);color:var(--verb-text);cursor:pointer;text-align:left;border:2px solid #0000;border-radius:14px;align-items:center;gap:12px;width:100%;padding:12px 16px;font-family:inherit;font-size:15px;transition:all .15s;display:flex}.mcq-option-btn span:last-child{overflow-wrap:anywhere;min-width:0}.mcq-option-btn:hover:not(:disabled){border-color:var(--verb-accent)}.mcq-option-btn.selected{border-color:var(--verb-accent);background:#2086ae1a}.mcq-option-btn.highlighted{border-color:var(--verb-accent)}.mcq-option-btn:disabled{opacity:.6;cursor:not-allowed}.grading-indicator{color:var(--verb-muted);align-items:center;gap:8px;padding:8px 0;font-style:italic;display:flex}.grading-dots{gap:4px;display:flex}.grading-dots span{background:var(--verb-muted);border-radius:50%;width:6px;height:6px;animation:1.4s ease-in-out infinite grading-pulse}.grading-dots span:nth-child(2){animation-delay:.2s}.grading-dots span:nth-child(3){animation-delay:.4s}@keyframes grading-pulse{0%,80%,to{opacity:.3;transform:scale(.8)}40%{opacity:1;transform:scale(1)}}@media (max-width:480px){.definition-word{font-size:22px}.difference-word{font-size:20px}}
@media (max-width:800px){.subscription-container{padding:calc(56px + env(safe-area-inset-top)) var(--verb-spacing-md) calc(var(--verb-spacing-lg) + env(safe-area-inset-bottom))}}.auth-container{min-height:100dvh;padding:var(--verb-spacing-lg);justify-content:center;align-items:center;display:flex}.auth-card{text-align:center;width:100%;max-width:400px}.auth-title{margin-bottom:var(--verb-spacing-sm);font-size:28px;font-weight:700}.auth-subtitle{color:var(--verb-muted);margin-bottom:var(--verb-spacing-lg)}.auth-form{gap:var(--verb-spacing-md);flex-direction:column;display:flex}.form-group{width:100%}.form-input{width:100%;padding:14px var(--verb-spacing-md);border:1px solid var(--verb-input-bg);background-color:#fff;border-radius:12px;font-family:inherit;font-size:16px;transition:border-color .15s}.form-input:focus{border-color:var(--verb-accent);outline:none}.form-message{padding:var(--verb-spacing-sm);border-radius:8px;font-size:14px}.form-message.error{color:#ff3b30;background-color:#fff0f0}.form-message.success{color:#34c759;background-color:#f0fff4}.btn-primary{width:100%;padding:14px var(--verb-spacing-md);background-color:var(--verb-accent);color:#fff;cursor:pointer;border:none;border-radius:12px;font-size:16px;font-weight:600;transition:background-color .15s}.btn-primary:hover{background-color:#1a6f91}.btn-primary:disabled{background-color:var(--verb-muted);cursor:not-allowed}.auth-divider{margin:var(--verb-spacing-lg) 0;color:var(--verb-muted);align-items:center;font-size:14px;display:flex}.auth-divider:before,.auth-divider:after{content:"";background-color:var(--verb-input-bg);flex:1;height:1px}.auth-divider span{padding:0 var(--verb-spacing-md)}.btn-google{justify-content:center;align-items:center;gap:var(--verb-spacing-sm);width:100%;padding:14px var(--verb-spacing-md);color:var(--verb-text);border:1px solid var(--verb-input-bg);cursor:pointer;background-color:#fff;border-radius:12px;font-size:16px;font-weight:500;transition:background-color .15s;display:flex}.btn-google:hover{background-color:var(--verb-bg)}.google-icon{width:20px;height:20px}.btn-toggle{margin-top:var(--verb-spacing-lg);color:var(--verb-accent);cursor:pointer;background:0 0;border:none;font-size:14px}.btn-toggle:hover{text-decoration:underline}.subscription-container{max-width:600px;padding:var(--verb-spacing-lg);max-height:100dvh;margin:0 auto;overflow-y:auto}.subscription-title{margin-bottom:var(--verb-spacing-sm);font-size:32px;font-weight:700}.subscription-description{max-width:560px;margin:0 auto var(--verb-spacing-lg);color:var(--verb-muted);text-align:center;font-size:16px;line-height:1.5}.subscription-card{border:1px solid var(--verb-input-bg);border-radius:var(--verb-border-radius);padding:var(--verb-spacing-lg);margin-bottom:var(--verb-spacing-lg);background-color:#fff}.subscription-info{margin-bottom:var(--verb-spacing-lg)}.subscription-header{align-items:center;gap:var(--verb-spacing-md);margin-bottom:var(--verb-spacing-sm);display:flex}.plan-name{font-size:24px;font-weight:600}.subscription-badge{border-radius:12px;padding:4px 12px;font-size:13px;font-weight:500;display:inline-block}.badge-active{color:#155724;background-color:#d4edda}.badge-past_due{color:#856404;background-color:#fff3cd}.badge-canceled{color:#721c24;background-color:#f8d7da}.badge-trialing{color:#0c5460;background-color:#d1ecf1}.badge-canceling{color:#856404;background-color:#fff3cd}.subscription-detail{color:var(--verb-muted);margin-top:var(--verb-spacing-sm);font-size:15px}.warning-text{color:#ff9500;margin-top:var(--verb-spacing-sm);padding:var(--verb-spacing-sm);background-color:#fff8e6;border-radius:8px;font-size:14px}.feature-list{margin-top:var(--verb-spacing-md);list-style:none}.feature-list li{padding:var(--verb-spacing-sm) 0;color:var(--verb-text);font-size:15px}.btn-manage{width:100%;padding:14px var(--verb-spacing-md);color:var(--verb-accent);border:2px solid var(--verb-accent);cursor:pointer;background-color:#fff;border-radius:12px;font-size:16px;font-weight:600;transition:all .15s}.btn-manage:hover:not(:disabled){background-color:var(--verb-accent);color:#fff}.btn-manage:disabled{opacity:.6;cursor:not-allowed}.btn-back{padding:var(--verb-spacing-sm) var(--verb-spacing-md);color:var(--verb-accent);cursor:pointer;background-color:#0000;border:none;border-radius:12px;align-items:center;font-size:15px;font-weight:500;transition:background-color .15s;display:inline-flex}.btn-back:hover{background-color:var(--verb-input-bg)}.success-message{padding:var(--verb-spacing-md);color:#155724;margin-bottom:var(--verb-spacing-md);background-color:#d4edda;border-radius:12px;font-weight:500}.info-message{padding:var(--verb-spacing-md);color:#0c5460;margin-bottom:var(--verb-spacing-md);background-color:#d1ecf1;border-radius:12px}.loading-state{text-align:center;padding:var(--verb-spacing-lg);color:var(--verb-muted);font-style:italic}
.btn-subscribe{width:100%;padding:16px var(--verb-spacing-md);background-color:var(--verb-accent);color:#fff;cursor:pointer;border:none;border-radius:12px;font-size:17px;font-weight:600;transition:background-color .15s}.btn-subscribe:hover:not(:disabled){background-color:#1a6f91}.btn-subscribe:disabled{background-color:var(--verb-muted);cursor:not-allowed;opacity:.6}.price-card{border:1px solid var(--verb-input-bg);border-radius:var(--verb-border-radius);padding:var(--verb-spacing-xl);background-color:#fff;max-width:520px;margin:0 auto;box-shadow:0 1px 3px #0000000a}.price-card__header{gap:var(--verb-spacing-xs);margin-bottom:var(--verb-spacing-lg);flex-direction:column;display:flex}.price-card__eyebrow{letter-spacing:.08em;text-transform:uppercase;color:var(--verb-accent);font-size:13px;font-weight:600}.price-card__tagline{color:var(--verb-text);font-size:18px;font-weight:600;line-height:1.3}.cadence-toggle{background-color:var(--verb-input-bg);margin-bottom:var(--verb-spacing-lg);border-radius:999px;gap:4px;padding:4px;display:inline-flex}.cadence-toggle__option{align-items:center;gap:var(--verb-spacing-sm);color:var(--verb-muted);cursor:pointer;background:0 0;border:none;border-radius:999px;padding:8px 16px;font-family:inherit;font-size:14px;font-weight:500;transition:all .15s;display:inline-flex}.cadence-toggle__option--active{color:var(--verb-text);background-color:#fff;box-shadow:0 1px 2px #00000014}.price-card__savings{color:var(--verb-success);background-color:#34c7591f;border-radius:999px;padding:2px 8px;font-size:11px;font-weight:600}.price-card__price{align-items:baseline;gap:var(--verb-spacing-sm);margin-bottom:var(--verb-spacing-lg);display:flex}.price-card__amount{letter-spacing:-.03em;color:var(--verb-text);font-size:56px;font-weight:700;line-height:1}.price-card__amount-fallback{color:var(--verb-muted);font-size:20px}.price-card__cadence{color:var(--verb-muted);font-size:17px}.benefit-list{margin:0 0 var(--verb-spacing-lg) 0;gap:var(--verb-spacing-md);flex-direction:column;padding:0;list-style:none;display:flex}.benefit-row{align-items:flex-start;gap:var(--verb-spacing-md);display:flex}.benefit-row__icon{width:32px;height:32px;color:var(--verb-accent);background-color:#2086ae1a;border-radius:8px;flex-shrink:0;justify-content:center;align-items:center;display:inline-flex}.benefit-row__body{flex-direction:column;gap:2px;display:flex}.benefit-row__title{color:var(--verb-text);font-size:15px;font-weight:600}.benefit-row__desc{color:var(--verb-muted);font-size:14px;line-height:1.4}.trust-line{justify-content:center;align-items:center;gap:var(--verb-spacing-sm);margin-top:var(--verb-spacing-md);color:var(--verb-muted);font-size:13px;display:flex}.marketing-shell{background-color:var(--verb-bg);min-height:100dvh}.marketing-nav{padding:var(--verb-spacing-md) var(--verb-spacing-lg);border-bottom:1px solid var(--verb-input-bg);justify-content:space-between;align-items:center;max-width:1100px;margin:0 auto;display:flex}.marketing-nav__brand{align-items:baseline;gap:var(--verb-spacing-sm);letter-spacing:-.02em;min-width:0;color:var(--verb-text);font-size:20px;font-weight:700;text-decoration:none;display:flex}.marketing-nav__tagline{color:var(--verb-muted);text-overflow:ellipsis;white-space:nowrap;min-width:0;font-size:13px;font-weight:400;overflow:hidden}.marketing-nav__cta{background-color:var(--verb-text);color:#fff;cursor:pointer;white-space:nowrap;border:none;border-radius:999px;flex-shrink:0;padding:8px 16px;font-family:inherit;font-size:14px;font-weight:600;text-decoration:none;transition:opacity .15s}.marketing-nav__cta:hover{opacity:.85}.pricing-hero{text-align:center;padding:64px var(--verb-spacing-md) var(--verb-spacing-xl);max-width:640px;margin:0 auto}.pricing-hero__eyebrow{letter-spacing:.08em;text-transform:uppercase;color:var(--verb-accent);font-size:13px;font-weight:600}.pricing-hero__title{letter-spacing:-.03em;margin:var(--verb-spacing-sm) 0 var(--verb-spacing-md) 0;color:var(--verb-text);font-size:44px;font-weight:700;line-height:1.1}.pricing-hero__sub{color:var(--verb-muted);font-size:18px;line-height:1.5}.pricing-section{max-width:560px;padding:0 var(--verb-spacing-md);margin:0 auto}.pricing-faq{max-width:640px;padding:64px var(--verb-spacing-md);margin:0 auto}.pricing-faq__title{margin-bottom:var(--verb-spacing-lg);text-align:center;font-size:24px;font-weight:700}.pricing-faq details{border-bottom:1px solid var(--verb-input-bg);padding:var(--verb-spacing-md) 0}.pricing-faq summary{cursor:pointer;padding-right:24px;font-size:16px;font-weight:500;list-style:none;position:relative}.pricing-faq summary::-webkit-details-marker{display:none}.pricing-faq summary:after{content:"+";color:var(--verb-muted);font-size:20px;transition:transform .2s;position:absolute;top:50%;right:0;transform:translateY(-50%)}.pricing-faq details[open] summary:after{transform:translateY(-50%)rotate(45deg)}.pricing-faq__answer{margin-top:var(--verb-spacing-sm);color:var(--verb-muted);font-size:15px;line-height:1.5}.pricing-footer{text-align:center;padding:var(--verb-spacing-xl) var(--verb-spacing-md) 64px;color:var(--verb-muted);font-size:13px}@media (max-width:480px){.price-card{padding:var(--verb-spacing-lg)}.price-card__amount{font-size:44px}.pricing-hero__title{font-size:34px}.cadence-toggle{width:100%;display:flex}.cadence-toggle__option{flex:1;justify-content:center}}@media (max-width:360px){.marketing-nav{padding:var(--verb-spacing-md)}.marketing-nav__tagline{display:none}}
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