:root{--ink:#172033;--muted:#5d6878;--line:#d8e0e8;--soft:#f1f5f8;--green:#079965;--green-dark:#057349;--green-soft:#e8f8f1;--blue:#2868d7;--paper:#fff;--bg:#f7f9fb;--shadow:0 16px 36px rgba(23,32,51,.08)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body.tnv-page{margin:0;background:var(--bg);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Noto Sans JP","Yu Gothic",Meiryo,sans-serif;letter-spacing:0;line-height:1.62}a{color:inherit;text-decoration:none}button,input,textarea{font:inherit}button{cursor:pointer}
.tnv-header{min-height:64px;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:0 clamp(16px,4vw,42px);border-bottom:1px solid var(--line);background:rgba(255,255,255,.98);position:sticky;top:0;z-index:20}.tnv-brand{display:inline-flex;align-items:center;gap:12px;min-width:0;font-size:clamp(18px,2vw,24px);font-weight:950}.tnv-logo{display:flex;align-items:center;gap:3px;width:42px;height:42px}.tnv-logo i{display:block;width:5px;border-radius:99px;background:var(--green)}.tnv-logo i:nth-child(1){height:18px}.tnv-logo i:nth-child(2){height:30px}.tnv-logo i:nth-child(3){height:24px}.tnv-logo i:nth-child(4){height:34px}.tnv-header nav{display:flex;gap:8px}.tnv-header nav a{min-height:38px;display:inline-flex;align-items:center;padding:0 14px;border:1px solid var(--line);border-radius:999px;background:#fff;color:#2c394a;font-weight:900}
main{max-width:1280px;margin:0 auto;padding:clamp(18px,3vw,34px) clamp(12px,3vw,30px) 0}.tnv-hero{display:grid;gap:18px}.tnv-title-row{display:grid;grid-template-columns:minmax(0,1fr) minmax(320px,.72fr);gap:22px;align-items:end}.tnv-kicker{width:fit-content;margin:0 0 8px;padding:6px 12px;border:1px solid #bfead7;border-radius:999px;background:var(--green-soft);color:var(--green-dark);font-size:15px;font-weight:950}.tnv-title-row h1{max-width:760px;margin:0;font-size:clamp(38px,5vw,60px);line-height:1.08;font-weight:950}.tnv-lead{max-width:800px;margin:12px 0 0;color:#293649;font-size:clamp(18px,2vw,22px);font-weight:780}.tnv-summary{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));border:1px solid var(--line);border-radius:8px;background:#fff;box-shadow:var(--shadow);overflow:hidden}.tnv-summary div{min-height:84px;display:grid;place-items:center;border-right:1px solid var(--line);padding:10px}.tnv-summary div:last-child{border-right:0}.tnv-summary span{color:var(--muted);font-size:14px;font-weight:850}.tnv-summary b{color:var(--green-dark);font-size:clamp(20px,2vw,28px);font-weight:950}
.tnv-console{display:grid;grid-template-columns:minmax(0,.92fr) minmax(420px,1fr);gap:14px}.tnv-editor,.tnv-voice,.tnv-grid article,.tnv-section,.tnv-faq{border:1px solid var(--line);border-radius:8px;background:var(--paper);box-shadow:var(--shadow)}.tnv-editor,.tnv-voice{display:grid;gap:16px;padding:clamp(16px,2vw,24px)}.tnv-step{display:flex;align-items:flex-start;gap:12px}.tnv-step>span{display:grid;place-items:center;width:42px;height:42px;border-radius:50%;background:var(--green);color:#fff;font-size:22px;font-weight:950;flex:0 0 auto}.tnv-step h2,.tnv-grid h2,.tnv-section h2,.tnv-faq h2{margin:0;font-size:clamp(24px,2.5vw,32px);line-height:1.2;font-weight:950}.tnv-step p{margin:4px 0 0;color:var(--muted);font-weight:760}
.tnv-template-row{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:10px}.tnv-chip{min-height:48px;border:1px solid #bcc8d3;border-radius:8px;background:#fff;color:#253246;font-size:17px;font-weight:920}.tnv-chip.is-active{border-color:var(--green);background:var(--green-soft);color:var(--green-dark);box-shadow:inset 0 0 0 1px rgba(7,153,101,.25)}
.tnv-field{display:grid;gap:8px;min-width:0;color:#243148;font-size:16px;font-weight:950}.tnv-field small{margin-left:8px;color:var(--muted);font-weight:900}.tnv-field input,.tnv-field textarea{width:100%;border:1px solid #c3ced9;border-radius:8px;background:#fff;color:var(--ink);font-size:18px;font-weight:720;outline:none}.tnv-field input{min-height:52px;padding:0 14px}.tnv-field textarea{min-height:280px;padding:16px;line-height:1.8;resize:vertical}.tnv-preview textarea{min-height:132px;background:#fbfcfd}.tnv-field input:focus,.tnv-field textarea:focus{border-color:var(--green);box-shadow:0 0 0 3px rgba(7,153,101,.16)}.tnv-two{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
.tnv-check-list{display:grid;gap:10px}.tnv-check-list>b{font-size:18px}.tnv-check-list div{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px}.tnv-check-list span{min-height:50px;display:flex;align-items:center;gap:8px;padding:0 14px;border:1px solid #bfead7;border-radius:8px;background:#fbfffd;color:var(--green-dark);font-weight:950}.tnv-check-list span:before{content:"";width:18px;height:18px;border-radius:50%;background:var(--green);box-shadow:inset 0 0 0 5px #fff;border:2px solid var(--green);flex:0 0 auto}
.voice-style-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}.voice-style{min-height:124px;display:grid;gap:6px;place-items:center;padding:14px;border:1px solid var(--line);border-radius:8px;background:#fff;color:var(--ink);text-align:center}.voice-style span{display:grid;place-items:center;width:54px;height:54px;border-radius:50%;background:var(--green-soft);color:var(--green-dark);font-size:20px;font-weight:950}.voice-style b{font-size:21px;line-height:1.2}.voice-style small{color:var(--muted);font-size:14px;font-weight:760}.voice-style.is-active{border-color:var(--green);box-shadow:inset 0 0 0 2px rgba(7,153,101,.22);background:#fbfffd}.voice-style.is-active span{background:var(--green);color:#fff}
.tnv-speed{display:grid;grid-template-columns:auto minmax(0,1fr);gap:12px;align-items:center}.tnv-speed b{font-size:18px}.speed-row{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));overflow:hidden;border:1px solid #c3ced9;border-radius:8px;background:#fff}.speed-row button{min-height:52px;border:0;border-right:1px solid #c3ced9;background:#fff;color:#263346;font-size:17px;font-weight:920}.speed-row button:last-child{border-right:0}.speed-row button.is-active{background:var(--green);color:#fff}.tnv-hp{position:fixed;left:0;bottom:0;width:1px;height:1px;opacity:0;pointer-events:none}
.tnv-primary{min-height:76px;display:flex;align-items:center;justify-content:center;gap:14px;border:0;border-radius:8px;background:var(--green);color:#fff;font-size:25px;font-weight:950;box-shadow:0 14px 28px rgba(7,153,101,.25)}.tnv-primary:hover{background:var(--green-dark)}.tnv-primary i{display:inline-flex;width:34px;height:28px;background:linear-gradient(90deg,transparent 0 3px,#fff 3px 7px,transparent 7px 10px,#fff 10px 15px,transparent 15px 18px,#fff 18px 23px,transparent 23px 26px,#fff 26px 30px,transparent 30px 34px)}
.tnv-player{display:grid;grid-template-columns:minmax(140px,.3fr) minmax(220px,1fr) minmax(150px,auto);gap:12px;align-items:center;padding:14px;border:1px solid var(--line);border-radius:8px;background:#fff}.tnv-player-head b{display:block;color:#5b6675;font-size:14px}.tnv-player-head strong{display:block;color:var(--ink);font-size:18px;font-weight:950}.tnv-player audio{width:100%;min-width:180px}.tnv-player a{min-height:50px;display:flex;align-items:center;justify-content:center;padding:0 16px;border:1px solid var(--blue);border-radius:8px;color:var(--blue);font-weight:950;white-space:nowrap}.tnv-player a[aria-disabled=true]{border-color:var(--line);color:#95a1ac;pointer-events:none}
.tnv-grid{display:grid;grid-template-columns:1fr .9fr;gap:16px;margin-top:24px}.tnv-grid article,.tnv-section,.tnv-faq{padding:clamp(18px,2.4vw,26px)}.tnv-grid ul{margin:14px 0 0;padding-left:1.2em;color:#344256;font-size:17px;font-weight:780}.tnv-grid a{min-height:46px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--soft);font-size:17px;font-weight:920}.tnv-grid a:after{content:">";color:var(--muted)}.tnv-section,.tnv-faq{margin-top:24px}.tnv-card-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px;margin-top:14px}.tnv-card-grid article{min-height:158px;padding:16px;border:1px solid var(--line);border-radius:8px;background:#fff}.tnv-card-grid b{display:block;color:var(--green-dark);font-size:21px;line-height:1.25}.tnv-card-grid p{margin:10px 0 0;color:var(--muted);font-weight:760}.tnv-faq{display:grid;gap:12px}.tnv-faq details{border:1px solid var(--line);border-radius:8px;background:#fff;overflow:hidden}.tnv-faq summary{cursor:pointer;padding:16px;font-size:18px;font-weight:950}.tnv-faq p{margin:0;padding:0 16px 16px;color:var(--muted);font-weight:760}.tnv-footer{display:flex;justify-content:center;gap:18px;flex-wrap:wrap;padding:34px 16px 48px;color:var(--muted);font-size:14px;font-weight:850}
body[data-voice-state=processing] .tnv-primary{opacity:.72;cursor:wait}body[data-voice-state=done] .tnv-player{border-color:rgba(7,153,101,.55);box-shadow:0 12px 28px rgba(7,153,101,.12)}body[data-voice-state=error] .tnv-player{border-color:rgba(210,55,55,.45)}
@media(max-width:1060px){.tnv-title-row,.tnv-console,.tnv-grid{grid-template-columns:minmax(0,1fr)}.tnv-summary{max-width:720px}.tnv-player{grid-template-columns:minmax(0,1fr)}.tnv-player audio,.tnv-player a{width:100%}}
@media(max-width:720px){.tnv-header{position:static;min-height:58px;align-items:flex-start;flex-direction:column;padding:12px;gap:10px}.tnv-header nav{width:100%;overflow-x:auto;padding-bottom:2px}.tnv-header nav a{flex:0 0 auto}main{padding:16px 10px 0}.tnv-title-row h1{font-size:36px}.tnv-lead{font-size:17px}.tnv-summary,.tnv-template-row,.tnv-two,.tnv-check-list div,.voice-style-grid,.tnv-speed,.tnv-card-grid{grid-template-columns:minmax(0,1fr)}.tnv-editor,.tnv-voice{padding:14px}.tnv-field textarea{min-height:240px;font-size:17px}.voice-style{min-height:88px;grid-template-columns:56px minmax(0,1fr);place-items:center start;text-align:left}.voice-style span{grid-row:1/3}.tnv-primary{min-height:70px;font-size:22px}.speed-row{grid-template-columns:minmax(0,1fr)}.speed-row button{border-right:0;border-bottom:1px solid #c3ced9}.speed-row button:last-child{border-bottom:0}}
.tnv-quick{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-top:14px}.tnv-quick a,.tnv-quick span{min-height:38px;display:inline-flex;align-items:center;padding:0 13px;border:1px solid var(--line);border-radius:999px;background:#fff;color:#2c394a;font-size:15px;font-weight:920}.tnv-quick a:first-child{border-color:var(--green);background:var(--green);color:#fff}.tnv-sample{min-height:50px;border:1px solid var(--blue);border-radius:8px;background:#fff;color:var(--blue);font-size:17px;font-weight:950}.tnv-format-note{padding:10px 12px;border:1px solid #cfe8dc;border-radius:8px;background:#f7fffb;color:#315845;font-size:14px;font-weight:820}
@media(max-width:720px){.tnv-title-row{gap:12px}.tnv-title-row h1{font-size:32px}.tnv-lead{font-size:16px;margin-top:8px}.tnv-quick{gap:7px;margin-top:10px}.tnv-quick a,.tnv-quick span{min-height:34px;font-size:13px;padding:0 10px}.tnv-summary{grid-template-columns:repeat(3,minmax(0,1fr));box-shadow:none}.tnv-summary div{min-height:58px;padding:6px;border-right:1px solid var(--line);border-bottom:0}.tnv-summary span{font-size:11px}.tnv-summary b{font-size:15px}.tnv-step>span{width:36px;height:36px;font-size:19px}.tnv-step h2{font-size:25px}.tnv-field textarea{min-height:218px;font-size:16px}}