:root{--tn-ink:#0F172A;--tn-violet:#4338CA;--tn-grid:#E5E7EB;--tn-paper:#FFFFFF;--tn-soft:#475569;--tn-wash:#EEF0FB;--tn-mono:ui-monospace,"SF Mono",Menlo,Consolas,monospace}
*{box-sizing:border-box}html{-webkit-text-size-adjust:100%}html,body{max-width:100%;overflow-x:hidden}
body{margin:0;background:var(--tn-paper);color:var(--tn-ink);font-family:Tahoma,"Lucida Grande",sans-serif;font-size:16px;line-height:1.6}
::selection{background:var(--tn-violet);color:#fff}
a{color:var(--tn-violet);text-underline-offset:3px}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,summary:focus-visible,.tn-tooth:focus-visible{outline:2px solid var(--tn-violet);outline-offset:3px}
.tn-skip{position:absolute;left:-999px}.tn-skip:focus{left:8px;top:8px;background:#fff;padding:6px 10px;z-index:9;border:1px solid var(--tn-violet)}
/* app bar */
.tn-top{display:flex;flex-wrap:wrap;align-items:stretch;gap:0 12px;padding:0 16px;background:var(--tn-ink);color:#fff}
@media(min-width:900px){.tn-top{position:sticky;top:0;z-index:5}}
.tn-brand{display:flex;align-items:center;gap:8px;padding:10px 0;font-weight:700;font-size:15px;color:#fff;text-decoration:none}
.tn-brand span{color:#C7C9F5}
.tn-brand::before{content:"";width:16px;height:16px;border-radius:3px;background:var(--tn-violet);box-shadow:inset 0 0 0 4px var(--tn-violet),inset 0 0 0 6px #fff}
.tn-top nav{display:flex;flex-wrap:wrap;margin-left:auto}
.tn-top nav a{display:flex;align-items:center;padding:6px 10px;font-size:14px;color:#E2E8F0;text-decoration:none;border-bottom:3px solid transparent;min-height:44px}
.tn-top nav a:hover,.tn-top nav a[aria-current]{border-bottom-color:#A5A8F0;color:#fff}
.tn-top a:focus-visible{outline-color:#fff}
main{max-width:1180px;margin:0 auto;padding:12px 16px 24px}
article>section,article>h1,article>.tn-lead,article>p{max-width:820px}
h1{font-size:clamp(1.35rem,3.2vw,1.85rem);line-height:1.25;margin:.3em 0 .3em;font-weight:700}
h2{font-size:1.2rem;line-height:1.3;margin:2em 0 .5em}
h3{font-size:1rem;margin:1.3em 0 .3em}
.tn-lead{margin:.3em 0}
.tn-cite{font-size:.9rem;color:var(--tn-soft);margin:.5em 0}
.tn-src{font-size:.82rem;font-style:italic;color:var(--tn-soft)}
.tn-crumbs{font-size:.85rem;color:var(--tn-soft);padding-top:4px}
li{margin:.25em 0}
/* hero strip */
.tn-hero{display:grid;gap:12px;grid-template-columns:minmax(0,1fr);max-width:none!important;align-items:center}
@media(min-width:760px){.tn-hero{grid-template-columns:minmax(0,1fr) 240px}}
.tn-heroph img{aspect-ratio:3/2;object-fit:cover}
/* photos */
.tn-ph{margin:0}.tn-ph img{display:block;width:100%;height:auto;border-radius:4px;background:var(--tn-grid)}
.tn-ph figcaption{font-size:.75rem;color:var(--tn-soft);padding-top:4px}
.tn-split>.tn-hpb{display:grid;gap:16px;grid-template-columns:minmax(0,1fr)}
@media(min-width:900px){.tn-split>.tn-hpb{grid-template-columns:minmax(0,1fr) 260px;align-items:start}.tn-split .tn-ph{margin-top:1em}}
.tn-split .tn-ph img{max-height:360px;object-fit:cover}
/* the app */
.tn-app{border:1px solid var(--tn-grid);border-radius:6px;max-width:none!important;background:#fff;margin-top:12px;box-shadow:0 2px 10px rgba(15,23,42,.06)}
.tn-bar{display:flex;flex-wrap:wrap;gap:8px;justify-content:space-between;padding:10px;border-bottom:1px solid var(--tn-grid);background:#F8FAFC;border-radius:6px 6px 0 0}
.tn-acts{display:flex;flex-wrap:wrap;gap:6px}
.tn-switch{display:flex;border:1px solid var(--tn-violet);border-radius:4px;overflow:hidden}
.tn-switch button{border:0;border-radius:0}
button{font:inherit;font-size:14px;cursor:pointer;border:1px solid #C7C9F5;background:#fff;color:var(--tn-violet);padding:8px 12px;min-height:44px;border-radius:4px}
button:hover{background:var(--tn-wash)}
button[aria-pressed=true],.tn-main{background:var(--tn-violet);color:#fff;border-color:var(--tn-violet)}
button[aria-pressed=true]:hover,.tn-main:hover{background:#3730A3}
.tn-tabs{display:flex;gap:0;border-bottom:1px solid var(--tn-grid);padding:0 10px;overflow-x:auto}
.tn-tabs button{border:0;border-radius:0;background:none;color:var(--tn-soft);border-bottom:3px solid transparent;white-space:nowrap}
.tn-tabs button[aria-selected=true]{color:var(--tn-ink);border-bottom-color:var(--tn-violet);font-weight:700}
.tn-pane{padding:12px}
.tn-chartgrid{display:grid;gap:14px;grid-template-columns:minmax(0,1fr)}
@media(min-width:900px){.tn-chartgrid{grid-template-columns:minmax(0,1fr) 280px;align-items:start}}
label{display:block;font-size:13px;font-weight:700;margin:8px 0 4px}
.tn-row{display:flex;flex-wrap:wrap;gap:6px;align-items:center}.tn-row label{margin:0}
input,select,textarea{font:15px/1.4 var(--tn-mono);padding:8px 10px;border:1px solid #64748B;border-radius:4px;min-height:44px;caret-color:var(--tn-violet);background:#fff;color:var(--tn-ink);max-width:100%}
input{flex:1;min-width:0}textarea{width:100%;display:block}select{font-family:Tahoma,sans-serif;font-size:14px}
.tn-conv,.tn-plan{max-width:560px}
.tn-note{font-size:.82rem;color:var(--tn-soft)}.tn-err{color:#B42318}
/* the card shape: a tooth tag with a notched corner and a punched hole */
.tn-tag{position:relative;background:#fff;border:1px solid var(--tn-ink);padding:12px 14px 12px 34px;
clip-path:polygon(0 0,calc(100% - 18px) 0,100% 18px,100% 100%,0 100%);}
.tn-tag::before{content:"";position:absolute;left:11px;top:14px;width:11px;height:11px;border-radius:50%;border:1.5px solid var(--tn-ink);background:var(--tn-wash)}
.tn-tag dl{display:grid;grid-template-columns:auto 1fr;gap:2px 14px;margin:6px 0 0}
.tn-tag dt{color:var(--tn-soft);font-size:13px}
.tn-tag dd{margin:0;font:700 1.15rem/1.3 var(--tn-mono);font-variant-numeric:tabular-nums}
.tn-tagname{margin:0;font-weight:700;text-transform:capitalize}
.tn-tag ul{margin:6px 0 0;padding-left:1.1em;font-size:.92rem}
.tn-tags,#p-out{display:grid;gap:10px;margin-top:12px;grid-template-columns:repeat(auto-fill,minmax(240px,1fr))}
.tn-tagrow{list-style:none;padding:0;display:grid;gap:10px;grid-template-columns:repeat(auto-fit,minmax(170px,1fr))}
.tn-tagrow .tn-tag{margin:0;font-size:.92rem}.tn-tagrow b{display:block;font-family:var(--tn-mono);color:var(--tn-violet)}
/* chart */
.tn-chartbox{margin:0;padding:8px;border-radius:4px;background-color:#fff;background-image:linear-gradient(var(--tn-grid) 1px,transparent 1px),linear-gradient(90deg,var(--tn-grid) 1px,transparent 1px);background-size:20px 20px}
.tn-chart{width:100%;height:auto;display:block}
.tn-chart .tn-lab{font:12px Tahoma,sans-serif;fill:var(--tn-soft)}.tn-chart .tn-mid{stroke:var(--tn-violet);stroke-width:1;stroke-dasharray:2 4}
.tn-tooth{cursor:pointer}.tn-tooth rect{fill:#fff;stroke:var(--tn-ink);stroke-width:1.2}
.tn-tooth text{font:700 12px var(--tn-mono);fill:var(--tn-ink)}
.tn-tooth:hover rect{fill:var(--tn-wash);stroke:var(--tn-violet)}.tn-tooth.tn-on rect{fill:var(--tn-violet);stroke:var(--tn-violet)}.tn-tooth.tn-on text{fill:#fff}
figcaption{font-size:.82rem;color:var(--tn-soft);padding:4px 0 0}
/* tables and drawer */
.tn-tablewrap{overflow-x:auto;max-width:100%}
table{border-collapse:collapse;width:100%;font-size:.9rem}
caption{text-align:left;font-size:.85rem;font-weight:700;padding:6px 0;color:var(--tn-soft)}
th,td{border-bottom:1px solid var(--tn-grid);padding:5px 10px 5px 0;text-align:left;vertical-align:top}
th{font-size:.8rem;color:var(--tn-soft);border-bottom:1px solid var(--tn-ink)}
td:first-child,td:nth-child(2),td:nth-child(3){font-family:var(--tn-mono);font-variant-numeric:tabular-nums;white-space:nowrap}
tbody tr:hover{background:var(--tn-wash)}
.tn-drawer details{border:1px solid var(--tn-grid);border-radius:4px;padding:6px 12px;margin:8px 0}
.tn-drawer summary{cursor:pointer;font-weight:700;min-height:32px}
.tn-cols{columns:2;column-gap:28px;padding-left:1.4em}@media(max-width:560px){.tn-cols{columns:1}}
code{font-family:var(--tn-mono);font-size:.85rem;border:1px solid var(--tn-grid);padding:1px 4px;border-radius:3px;white-space:normal;word-break:break-word}
.tn-faq details{border-bottom:1px solid var(--tn-grid);padding:8px 0}
.tn-faq summary{font-weight:700;cursor:pointer;list-style:none;display:flex;gap:10px}
.tn-faq summary::-webkit-details-marker{display:none}
.tn-faq summary::before{content:"+";font-family:var(--tn-mono);color:var(--tn-violet);width:1ch}
.tn-faq details[open] summary::before{content:"\2212"}
.tn-faq details p{margin:.4em 0 0 calc(1ch + 10px)}
.tn-sources ul{font-size:.85rem;padding-left:1.2em}
.tn-disclosure{margin:28px 0 0;max-width:820px;font-size:.85rem;color:var(--tn-soft);border:1px solid var(--tn-grid);border-radius:4px;padding:8px 10px}
.tn-disclosure p{margin:0}
.tn-foot{border-top:1px solid var(--tn-grid);padding:10px 16px;font-size:.82rem;color:var(--tn-soft);display:flex;flex-wrap:wrap;gap:4px 16px;justify-content:space-between;max-width:1180px;margin:0 auto}
.tn-foot p{margin:0}
@media print{.tn-top,.tn-foot,.tn-bar,.tn-tabs,.tn-hero,.tn-help,.tn-faq,.tn-sources,.tn-cite-box,.tn-disclosure,#out,#p-conv,#p-plan,.tn-ph{display:none!important}
.tn-app{border:0;box-shadow:none}.tn-drawer details{display:block}.tn-drawer details>*{display:block}}
.tn-side img{max-height:300px;object-fit:cover}
@media(min-width:900px){.tn-side{float:right;width:240px;margin:2em 0 12px 20px}}
.tn-why{margin:.2em 0 .4em;padding-left:1.2em}.tn-cite p{margin:.3em 0}
@media(max-width:759px){.tn-heroph img{max-height:120px}.tn-chartbox{overflow-x:auto}.tn-chart{min-width:580px}
.tn-top nav a{min-height:40px;padding:4px 8px}.tn-cite{font-size:.85rem}}

/* micro tool v3 */
.tn-hero h1{margin-bottom:.1em}.tn-hero .tn-lead{color:var(--tn-soft);margin:0 0 4px}
.tn-app{margin-top:8px}
.tn-cmp{display:flex;align-items:center;gap:6px;margin:0;font-weight:400;font-size:14px}
.tn-chartgrid{grid-template-columns:minmax(0,1fr)}
@media(min-width:900px){.tn-chartgrid{grid-template-columns:minmax(0,1fr) 300px}}
.tn-chart text{font-size:13px}
#out{min-height:220px}
#out .tn-tagname{font-size:1.15rem}
#out dl{grid-template-columns:auto 1fr;gap:6px 16px;margin-top:10px}
#out dd{font-size:2.2rem;line-height:1.1;color:var(--tn-violet)}
#out dd:first-of-type{color:var(--tn-ink)}
.tn-conv,.tn-plan{max-width:none}
#c-in,#q-in{font-size:1.4rem;min-height:52px}
#c-out .tn-tag dd{font-size:1.8rem}
.tn-quiz .tn-qask{font-size:1.4rem;font-weight:700;margin:4px 0 10px}
.tn-qres{font-size:1.15rem;font-weight:700;min-height:1.6em}
.tn-ok{color:#166534}.tn-no{color:#B42318}
.tn-cite{max-width:820px;border-top:1px solid var(--tn-grid);margin-top:14px;padding-top:8px}
.tn-helplist{margin-top:14px;max-width:none!important}
.tn-hlt{font-weight:700;font-size:1.1rem;margin:16px 0 6px}
.tn-hp{border:1px solid var(--tn-grid);border-radius:4px;margin:6px 0;background:#fff}
.tn-hp>summary{cursor:pointer;list-style:none;display:flex;align-items:center;gap:10px;padding:8px 12px;min-height:44px}
.tn-hp>summary::-webkit-details-marker{display:none}
.tn-hp>summary::before{content:"+";font-family:var(--tn-mono);color:var(--tn-violet);font-weight:700;width:1ch}
.tn-hp[open]>summary::before{content:"\2212"}
.tn-hp>summary h2{margin:0;font-size:1rem;padding:0;border:0}
.tn-hpb{padding:0 14px 12px}
@media(min-width:900px){.tn-helplist{display:grid;grid-template-columns:1fr 1fr;column-gap:10px;align-items:start}.tn-hlt{grid-column:1/-1}}
@media print{.tn-helplist,.tn-cite,#p-quiz{display:none!important}}
@media(min-width:760px){.tn-hero{grid-template-columns:minmax(0,1fr)}}

/* 3D mouth */
.tn-stagewrap{display:grid;gap:14px;grid-template-columns:minmax(0,1fr);padding:12px 12px 0}
@media(min-width:900px){.tn-stagewrap{grid-template-columns:minmax(0,1fr) 300px;align-items:start}}
.tn-views{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:8px}
.tn-views button{padding:6px 10px}
.tn-stage{position:relative;height:520px;border:1px solid var(--tn-grid);border-radius:4px;overflow:hidden;touch-action:none;
background-color:#fff;background-image:linear-gradient(#F1F2F6 1px,transparent 1px),linear-gradient(90deg,#F1F2F6 1px,transparent 1px);background-size:24px 24px}
.tn-canvas{display:block;width:100%;height:100%;cursor:grab;outline:0}
.tn-canvas:active{cursor:grabbing}
.tn-labels{position:absolute;inset:0;pointer-events:none;overflow:hidden}
.tn-lb{position:absolute;left:0;top:0;font:700 11px/1.5 var(--tn-mono);color:var(--tn-ink);background:rgba(255,255,255,.88);border:1px solid #D7DAE3;border-radius:3px;padding:0 4px;white-space:nowrap;will-change:transform}
.tn-lb.tn-on{background:var(--tn-violet);color:#fff;border-color:var(--tn-violet);font-size:13px;z-index:2}
.tn-tip{position:absolute;left:0;top:0;margin:0;pointer-events:none;background:var(--tn-ink);color:#fff;font:700 13px/1.4 var(--tn-mono);padding:3px 8px;border-radius:3px;z-index:3}
.tn-flat .tn-chartbox{margin:0}
.tn-keys{display:grid;grid-template-columns:repeat(calc(var(--n,16) * 1),minmax(0,1fr));gap:4px}
.tn-keys button{padding:4px 0;min-width:0;font:700 13px var(--tn-mono);border-color:#D7DAE3;color:var(--tn-ink)}
.tn-keys button.tn-on{background:var(--tn-violet);color:#fff;border-color:var(--tn-violet)}
@media(max-width:759px){.tn-stage{height:400px}.tn-stagewrap{padding:10px 10px 0}.tn-keys{grid-template-columns:repeat(8,minmax(0,1fr))}.tn-flat .tn-chart{min-width:580px}.tn-flat{overflow-x:auto}#out{min-height:0}}
@media print{.tn-stage,.tn-views,.tn-keys,#p-chart .tn-note{display:none!important}.tn-flat{display:block!important}.tn-stagewrap{display:block}}

/* mobile pass 2026-11-12 (phones, 760 px and narrower) */
@media(max-width:760px){
body{line-height:1.6;padding-bottom:env(safe-area-inset-bottom)}
main{padding:8px 16px 24px}
h1{font-size:28px;line-height:1.2}
.tn-top{padding:0 12px;gap:0 8px}
.tn-brand{min-height:44px;padding:0 4px 0 0;font-size:15px}
.tn-top nav{flex-wrap:nowrap;overflow-x:auto;margin-left:-4px;width:100%;scrollbar-width:none;-webkit-mask-image:linear-gradient(90deg,#000 85%,transparent);mask-image:linear-gradient(90deg,#000 85%,transparent)}
.tn-top nav::-webkit-scrollbar{display:none}
.tn-top nav a{min-height:44px;min-width:44px;padding:4px 10px;white-space:nowrap;justify-content:center}
.tn-crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:0 6px}
.tn-crumbs a{display:inline-flex;align-items:center;min-height:44px;min-width:44px}
.tn-foot a{display:inline-flex;align-items:center;min-height:44px;min-width:44px;padding:0 4px}
.tn-faq summary,.tn-drawer summary{min-height:44px;align-items:center;padding:6px 0}
.tn-drawer summary{display:flex}
.tn-ph figcaption,figcaption{font-size:13px}
.tn-src,.tn-note,.tn-cite,.tn-disclosure,.tn-foot,.tn-sources ul,.tn-crumbs{font-size:14px}
th{font-size:13px}table{font-size:15px}.tn-tablewrap td:nth-child(n){white-space:normal}td{padding-right:8px}
.tn-tablewrap{-webkit-overflow-scrolling:touch}
.tn-tablewrap th:first-child,.tn-tablewrap td:first-child{position:sticky;left:0;background:#fff;z-index:1}
.tn-tags,#p-out{grid-template-columns:minmax(0,1fr)}
.tn-tagrow{grid-template-columns:minmax(0,1fr)}
.tn-bar{gap:8px}.tn-acts{gap:8px}
/* the tool: 3D mouth straight under the H1 and lead */
.tn-app{display:flex;flex-direction:column}
.tn-stagewrap{order:1}.tn-bar{order:2;border-radius:0;border-top:1px solid var(--tn-grid)}.tn-tabs{order:3}.tn-pane{order:4}
.tn-stagecol{display:flex;flex-direction:column}
.tn-stage{order:1;height:340px;touch-action:pan-y}
.tn-flat{order:2}
.tn-views{order:3;flex-wrap:nowrap;overflow-x:auto;gap:8px;margin:8px -10px 0;padding:0 10px 4px;scrollbar-width:none;-webkit-mask-image:linear-gradient(90deg,#000 82%,transparent);mask-image:linear-gradient(90deg,#000 82%,transparent)}
.tn-views::-webkit-scrollbar{display:none}
.tn-views button{flex:0 0 auto;min-height:44px;white-space:nowrap;padding:8px 14px}
.tn-tabs{gap:8px}.tn-tabs button{min-height:44px;min-width:44px}
.tn-lb{font-size:13px}
.tn-keys{grid-template-columns:repeat(auto-fill,minmax(48px,1fr));gap:8px}
.tn-keys button{min-height:44px}
.tn-hp>summary{min-height:48px}
}
/* Header and footer CTA 2026-11-12 */
.tn-cta{display:flex;align-items:center;align-self:center;min-height:44px;margin-left:12px;padding:0 14px;border-radius:6px;background:var(--tn-violet);color:#fff;font-weight:700;font-size:14px;text-decoration:none;white-space:nowrap}
.tn-cta:hover{background:#3730A3}
.tn-top .tn-cta:focus-visible{outline-color:#fff}
.tn-foot .tn-cta-foot{flex:1 1 100%;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:10px 20px;padding:6px 0 12px;margin-bottom:4px;border-bottom:1px solid var(--tn-grid)}
.tn-cta-line{max-width:46rem;font-size:15px;line-height:1.55;color:var(--tn-ink)}
.tn-foot a.tn-cta-btn{display:inline-flex;align-items:center;min-height:44px;padding:0 16px;border-radius:6px;background:var(--tn-violet);color:#fff;font-weight:700;font-size:14px;text-decoration:none}
.tn-foot a.tn-cta-btn:hover{background:#3730A3}
@media(max-width:760px){
.tn-cta{order:3;flex:1 1 100%;justify-content:center;margin:0 -12px;border-radius:0;white-space:normal;text-align:center}
.tn-cta-line{font-size:15px}
}
@media print{.tn-cta,.tn-cta-foot{display:none!important}}
/* strip-track 2026-11-12 */
.tn-strip{display:flex;flex-wrap:wrap;align-items:center;gap:8px 14px;margin:22px 0;padding:10px 14px;border:1px solid rgba(0,0,0,.18);border-radius:8px;font-size:14.5px;line-height:1.45}
.tn-strip-tag{font-size:12px;font-weight:700;text-transform:uppercase;letter-spacing:.06em;opacity:.8}
.tn-strip-txt{flex:1 1 280px;min-width:0}
.tn-strip-btn{flex:0 0 auto;min-height:44px;display:inline-flex;align-items:center;justify-content:center}
.tn-cta{min-height:44px;height:auto;white-space:normal;line-height:1.25;max-width:270px;text-align:center}
@media (max-width:760px){.tn-strip{padding:10px 12px}.tn-strip-btn{width:100%}.tn-cta{max-width:none}}