/* Visual tokens match the homepage; scoped to this tool. */
:root{--red:#8c3124;--red-light:#a63b2d;--ink:#363636;--muted:#626262;--paper:#fff;--soft:#f9f9f9;--line:#dedede;font-family:'Titillium Web',sans-serif;color:var(--ink);background:white}
*{box-sizing:border-box}body{margin:0;line-height:1.6}a{color:var(--red);text-underline-offset:4px}button,input,select,textarea{font:inherit}input,textarea{caret-color:var(--red)}::selection{background:var(--red);color:white}:focus-visible{outline:3px solid var(--red);outline-offset:4px}[hidden]{display:none!important}html{scrollbar-color:#8c3124 #f9f9f9}.wrap{width:min(1200px,calc(100% - 48px));margin:auto}.skip{position:absolute;left:16px;top:-80px;background:white;padding:12px;z-index:2}.skip:focus{top:8px}
.site-header{border-bottom:1px solid var(--line)}.header-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:96px}.brand{display:flex;align-items:center;gap:12px;text-decoration:none;color:var(--ink);font-family:'Dosis',sans-serif;font-size:23px;font-weight:700}.brand img{width:48px;height:48px;border-radius:8px}.header-note{font-size:14px;color:var(--muted)}.breadcrumb{font-size:14px;padding-top:24px;color:var(--muted)}.breadcrumb span{margin:0 10px}
.hero{padding:24px 0 32px;max-width:900px}h1,h2,h3{font-family:'Dosis',sans-serif;font-weight:700;text-wrap:balance}h1{font-size:clamp(36px,4.7vw,58px);line-height:1.12;letter-spacing:-.02em;margin:0 0 20px}h1 span{color:var(--red)}.intro{font-size:19px;max-width:68ch;color:var(--muted);margin:0}.benefits{display:flex;flex-wrap:wrap;gap:8px 24px;padding:0;list-style:none;font-size:14px;margin:20px 0 0}.benefits li{display:flex;align-items:center;gap:8px}.benefits li::before{content:'';width:6px;height:6px;background:var(--red);border-radius:50%}
.workspace{display:grid;grid-template-columns:minmax(0,.8fr) minmax(0,1.2fr);border:1px solid var(--line);border-radius:16px;overflow:hidden;background:white;box-shadow:0 12px 36px #00000008}.controls{padding:32px;background:var(--soft);border-right:1px solid var(--line)}.panel-title{font-size:26px;line-height:1.2;margin:0 0 24px}.field{margin:0 0 18px}.field label{display:block;font-size:16px;font-weight:600;margin-bottom:6px}.optional{font-weight:400;color:var(--muted);font-size:14px}.hint,.privacy{font-size:14px;color:var(--muted);margin:6px 0 0;line-height:1.5}input,select,textarea{width:100%;min-width:0;color:var(--ink);border:1px solid #aaa;border-radius:8px;background:white;padding:11px 12px;font-size:16px}::placeholder{color:#666;opacity:1}input,select{min-height:48px}.pair{display:grid;grid-template-columns:1fr 1fr;gap:14px}button{cursor:pointer;min-height:48px;border-radius:8px;font-size:16px;font-weight:600;padding:11px 18px;transition:background .18s ease}button:active{transform:translateY(1px)}.primary{background:var(--red);color:white;border:1px solid var(--red);width:100%}.primary:hover,.cta:hover{background:var(--red-light)}.privacy{margin-top:12px}
.preview{padding:32px;min-width:0;display:flex;flex-direction:column}.preview-top{display:flex;gap:14px;align-items:baseline;justify-content:space-between}.preview-top .panel-title{scroll-margin-top:20px}.tag{font-size:13px;color:var(--muted);white-space:nowrap}.preview label{font-size:14px;font-weight:600;display:block;margin-bottom:6px}.preview input{border:0;border-bottom:1px solid var(--line);border-radius:0;padding:8px 0 16px;margin-bottom:20px;font-size:18px}.preview textarea{resize:vertical;min-height:310px;flex:1;border:0;padding:0;line-height:1.8;font-size:17px;background:transparent}.copy{background:white;border:1px solid #aaa;min-width:140px;color:var(--red)}.copy:hover{background:#f7ecea;border-color:var(--red)}.copy-row{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:16px;border-top:1px solid var(--line);padding-top:16px}.copy-row span,#status{font-size:14px;color:var(--muted)}#status{min-height:44px;margin:12px 0 0}
.learning{margin:0;padding:24px 0;display:grid;grid-template-columns:1fr 1fr;gap:40px;border-bottom:1px solid var(--line)}.learning h3{font-size:20px;margin:0 0 6px;color:var(--red)}.learning p{font-size:16px;margin:0;color:var(--muted);max-width:65ch}.bridge{margin:40px 0 64px;padding:32px;background:var(--soft);border-radius:12px;display:flex;justify-content:space-between;align-items:center;gap:24px}.bridge h2{font-size:30px;margin:0 0 8px}.bridge p{color:var(--muted);font-size:16px;max-width:590px;margin:0}.cta{display:inline-flex;align-items:center;justify-content:center;text-align:center;flex-shrink:0;min-height:48px;padding:12px 22px;background:var(--red);color:white;border-radius:8px;text-decoration:none;font-size:16px;font-weight:600}
.guide,.phrase-guide{display:grid;grid-template-columns:.8fr 1.2fr;gap:64px;margin-bottom:64px}h2{line-height:1.2}.guide h2,.faq h2,.phrase-guide h2,.examples h2{font-size:34px;margin:0 0 16px}.guide p,.phrase-guide p{color:var(--muted);font-size:17px;max-width:65ch}.guide ol{padding-left:22px;margin:0}.guide li{padding:0 0 16px 10px;font-size:17px}.guide li::marker{color:var(--red);font-weight:600}.guide li strong{display:block}.phrase-guide{padding-top:32px;border-top:1px solid var(--line)}.phrase-list{margin:0}.phrase-list>div{padding:20px 0;border-bottom:1px solid var(--line)}.phrase-list>div:first-child{padding-top:0}.phrase-list dt{font-size:15px;color:var(--muted);margin-bottom:10px}.phrase-list dd{margin:0;display:flex;align-items:baseline;gap:12px 24px;flex-wrap:wrap}.phrase-list [lang]{font-size:23px;font-family:'Dosis',sans-serif;font-weight:600;color:var(--red)}.phrase-connector,.phrase-meaning{font-size:15px;color:var(--muted)}.phrase-meaning{flex-basis:100%}
.examples{margin:0 0 64px}.example-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px}.example{padding:24px 0;border-top:1px solid var(--line)}.example h3{font-size:24px;margin:0 0 12px}.example p{font-size:16px;color:var(--muted)}.sample{white-space:pre-wrap;font-size:16px;line-height:1.8}.faq{max-width:820px;margin:0 auto 64px}.faq details{border-bottom:1px solid var(--line);padding:8px 0}.faq summary{cursor:pointer;font-weight:600;min-height:48px;padding:12px 16px 12px 0;font-size:18px}.faq details p{color:var(--muted);font-size:17px;margin:8px 0 16px}.footer{padding:26px 0;border-top:1px solid var(--line);font-size:14px;color:var(--muted)}.footer .wrap{display:flex;justify-content:space-between;gap:20px}.loading{padding:18px;border:1px solid var(--line);border-radius:8px}
@media(max-width:760px){.wrap{width:calc(100% - 32px)}.header-inner{min-height:72px}.header-note{display:none}.brand{font-size:21px}.brand img{width:40px;height:40px}.hero{padding:20px 0 28px}h1{font-size:38px}.intro{font-size:17px}.workspace{grid-template-columns:1fr}.controls{border-right:0;border-bottom:1px solid var(--line);padding:22px}.preview{padding:22px}.learning{grid-template-columns:1fr;gap:20px}.bridge{flex-direction:column;align-items:flex-start;gap:20px;margin:28px 0 40px;padding:24px}.cta{width:100%}.guide,.phrase-guide{grid-template-columns:1fr;gap:12px;margin-bottom:40px}.example-grid{grid-template-columns:1fr;gap:12px}.footer .wrap{flex-direction:column;gap:8px}.benefits{gap:6px 16px}.preview textarea{min-height:340px}.examples h2,.guide h2,.phrase-guide h2,.faq h2{font-size:30px}.examples{margin-bottom:40px}}
@media(max-width:360px){h1{font-size:34px}.pair{grid-template-columns:1fr;gap:0}.controls,.preview{padding:18px}.copy-row{align-items:flex-start;flex-direction:column}.phrase-list dd{gap:8px 16px}}
/* Native selects retain keyboard/touch behavior, with a deliberately inset chevron. */
select{appearance:none;padding-right:44px;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='20' height='20' viewBox='0 0 24 24' fill='none' stroke='%23626262' stroke-width='1.7' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m7 10 5 5 5-5'/%3E%3C/svg%3E");background-position:right 14px center;background-repeat:no-repeat}select:hover,input:hover{border-color:#777}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip-path:inset(50%);white-space:nowrap;border:0}
.preview{padding:0;align-self:stretch}.preview-top{padding:20px 28px;background:#f9f9f9;border-bottom:1px solid var(--line);align-items:center}.preview-top .panel-title{display:flex;align-items:center;gap:12px;margin:0;font-size:24px}.preview-top svg{color:var(--red);flex-shrink:0}.tag{font-size:13px}.subject-row{display:flex;align-items:center;gap:18px;margin:0 28px;border-bottom:1px solid var(--line)}.subject-row label{margin:0;font-weight:400;color:var(--muted);flex-shrink:0}.subject-row input{border:0;margin:0;padding:18px 0;font-size:17px}.preview textarea{width:calc(100% - 56px);margin:24px 28px 16px;min-height:290px;font-size:17px}.copy-row{margin:0 28px;padding:20px 0 0;justify-content:flex-start;flex-wrap:wrap}.open-email{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:10px 16px;border:1px solid var(--line);border-radius:8px;text-decoration:none;color:var(--ink);font-size:16px;font-weight:600}.open-email:hover{background:var(--soft);border-color:#aaa}.copy{background:var(--red);color:white;border-color:var(--red)}.copy:hover{background:var(--red-light);border-color:var(--red-light)}.composer-note{margin:10px 28px 0;font-size:13px;color:var(--muted)}#status{margin:10px 28px 20px;min-height:22px;font-size:13px}
@media(max-width:760px){.preview{padding:0}.preview-top{padding:20px}.subject-row{margin:0 20px;gap:12px}.preview textarea{margin:22px 20px 16px;width:calc(100% - 40px);min-height:320px}.copy-row{margin:0 20px;gap:10px}.composer-note{margin-left:20px;margin-right:20px}#status{margin-left:20px;margin-right:20px}.open-email,.copy{font-size:15px;padding:10px 12px}.copy-row{align-items:stretch;flex-direction:row}.copy-row>*{flex:1 1 auto}}
.tone-comparison{padding:16px 0;margin:0 0 22px;border-top:1px solid var(--line);border-bottom:1px solid var(--line);overflow-wrap:anywhere}.tone-comparison h3{font-size:21px;margin:0 0 12px}.tone-comparison p{font-size:15px;line-height:1.5;margin:6px 0 12px}.tone-comparison .comparison-label{font-size:13px;color:var(--muted);margin-bottom:4px}.tone-comparison mark{color:var(--red);background:#f3e4df;box-decoration-break:clone;-webkit-box-decoration-break:clone;padding:2px 3px;animation:tone-reveal 1.8s ease-out}#tone-explanation{font-size:14px;color:var(--muted);margin-bottom:0}@keyframes tone-reveal{from{background:#e5bcae}to{background:#f3e4df}}@media(prefers-reduced-motion:reduce){.tone-comparison mark{animation:none}}
@media(forced-colors:active){select{appearance:auto;background-image:none}}
@media(prefers-reduced-motion:reduce){button{transition:none}button:active{transform:none}}