@charset "UTF-8";
:root{--deep:#061b2b;--navy:#092a40;--paper:#d9e8e7;--cyan:#83d9e8;--acid:#eaff67;--line:#427188}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--deep);color:var(--paper);font-family:"SFMono-Regular",Menlo,Consolas,"Hiragino Kaku Gothic ProN",monospace;line-height:1.65}a{color:inherit}img{display:block;max-width:100%}button,input{font:inherit}:focus-visible{outline:3px solid var(--acid);outline-offset:4px}.skip{position:absolute;top:-100px;left:1rem;z-index:10;background:white;color:black;padding:.7rem}.skip:focus{top:1rem}.status-strip{display:flex;justify-content:space-between;gap:1rem;padding:.5rem 2.5vw;background:var(--acid);color:var(--deep);font:700 .63rem/1.3 Menlo,monospace;letter-spacing:.1em}.header{min-height:86px;padding:1rem 2.5vw;display:flex;align-items:center;justify-content:space-between;gap:2rem;border-bottom:1px solid var(--line)}.brand{display:flex;align-items:center;gap:1rem;text-decoration:none;font-size:1.6rem;font-weight:800;letter-spacing:.08em}.brand-mark{background:var(--acid);color:var(--deep);font-size:1.5rem;padding:.3rem}.brand small{display:block;font:700 .45em Menlo,monospace;letter-spacing:.18em}.header nav{display:flex;gap:3rem}.header nav a,.return{text-decoration:none;font-size:.72rem;letter-spacing:.13em}.header nav a:hover,.return:hover{color:var(--acid)}.hero{display:grid;grid-template-columns:1fr 1fr;min-height:780px;background-image:linear-gradient(#2d607133 1px,transparent 1px),linear-gradient(90deg,#2d607133 1px,transparent 1px);background-size:40px 40px}.hero-type{position:relative;display:flex;flex-direction:column;justify-content:center;padding:5rem 5vw 6rem;border-right:1px solid var(--line)}.hero-code{display:flex;justify-content:space-between;gap:1rem;border-block:1px solid var(--line);padding:.7rem 0;font-size:.7rem;letter-spacing:.07em}.micro{font-size:.7rem;color:var(--cyan);margin-top:4rem;letter-spacing:.13em}.hero h1{font-family:"Arial Black","Hiragino Kaku Gothic ProN",sans-serif;font-size:clamp(5rem,9vw,11rem);font-weight:900;line-height:1;letter-spacing:-.1em;margin:1rem 0 2rem}.hero h1 span{color:var(--acid)}.hero-sub{max-width:34rem;font-size:.96rem;line-height:1.9}.hero-link{display:flex;justify-content:space-between;gap:2rem;align-items:center;max-width:32rem;background:var(--acid);color:var(--deep);text-decoration:none;padding:1rem 1.2rem;margin-top:2.4rem;font-weight:800}.hero-link:hover{background:var(--cyan)}.hero-bottom{position:absolute;bottom:1.5rem;left:5vw;right:5vw;display:flex;justify-content:space-between;font-size:.62rem;letter-spacing:.1em}.diagram-panel{position:relative;padding:2rem 3vw;display:flex;flex-direction:column;justify-content:space-between;overflow:hidden}.diagram-top{display:flex;justify-content:space-between;gap:1rem;font-size:.62rem;letter-spacing:.1em;color:var(--cyan)}.part-diagram{width:min(100%,620px);max-height:620px;align-self:center;overflow:visible}.part-diagram text{font:700 10px Menlo,monospace;fill:var(--cyan);letter-spacing:2px}.outer-orbit,.measure-ring,.part-ring,.inner-ring{fill:none;stroke:var(--cyan)}.outer-orbit{stroke-width:1;stroke-dasharray:5 8;animation:rotate 30s linear infinite;transform-origin:300px 300px}.measure-ring{stroke-width:1;opacity:.5;stroke-dasharray:2 12;animation:rotate 18s linear infinite reverse;transform-origin:300px 300px}.part-ring{stroke-width:6;stroke-dasharray:40 18;animation:rotate 8s linear infinite;transform-origin:300px 300px}.inner-ring{stroke-width:3;stroke-dasharray:15 7;animation:rotate 11s linear infinite reverse;transform-origin:300px 300px}.axis{fill:none;stroke:var(--line);stroke-width:1;stroke-dasharray:6 9}.dimension{fill:none;stroke:var(--cyan);stroke-width:1}.tool{animation:tool 3s ease-in-out infinite alternate}.scan{animation:rotate 5s linear infinite;transform-origin:300px 300px;opacity:.6}@keyframes rotate{to{transform:rotate(360deg)}}@keyframes tool{to{transform:translateX(-42px)}}.diagram-note{font-size:.72rem;line-height:1.7;max-width:38rem;color:#b1d3dc}.diagram-corners{position:absolute;inset:1.2rem;display:grid;grid-template-columns:1fr 1fr;grid-template-rows:1fr 1fr;pointer-events:none;color:var(--acid)}.diagram-corners span:nth-child(2),.diagram-corners span:nth-child(4){text-align:right}.diagram-corners span:nth-child(3),.diagram-corners span:nth-child(4){align-self:end}.data-line{display:flex;justify-content:space-between;gap:1rem;overflow:hidden;padding:.8rem 2.5vw;border-block:1px solid var(--line);font-size:.63rem;color:var(--acid);white-space:nowrap;letter-spacing:.08em}.principle{padding:7rem 4vw;background:#d9e8e7;color:var(--deep);display:grid;grid-template-columns:27% 1fr;gap:3vw}.section-code{font-size:.7rem;font-weight:800;letter-spacing:.1em}.principle-main h2,.consult h2{font-family:"Arial Black","Hiragino Kaku Gothic ProN",sans-serif;font-size:clamp(3.4rem,6vw,7rem);line-height:1.16;letter-spacing:-.08em;margin:0 0 2rem}.principle-main h2 strong,.consult h2 strong{color:#187c95}.principle-main>p{max-width:43rem;line-height:1.9}.process-rows{grid-column:1/3;border-top:2px solid var(--deep);margin-top:3rem}.process-rows article{display:grid;grid-template-columns:10% 25% 1fr 15%;gap:1rem;align-items:center;padding:1.8rem 0;border-bottom:1px solid #7eabae}.process-rows article>span{font-size:3rem;font-weight:900;color:#127b97}.process-rows h3{font-family:"Arial Black",sans-serif;font-size:1.5rem;margin:0}.process-rows p{margin:0}.process-rows b{font-size:.7rem;text-align:right}.specimen{padding:7rem 4vw;background:#0d3047}.specimen-head{display:grid;grid-template-columns:25% 1fr 25%;gap:2rem;align-items:end;margin-bottom:3rem}.specimen-head>span{font-size:.7rem;color:var(--cyan)}.specimen h2{font-family:"Arial Black",sans-serif;font-size:clamp(3rem,6vw,6rem);line-height:1.06;margin:0;letter-spacing:-.07em}.specimen-head p{line-height:1.8;font-size:.82rem}.specimen figure{margin:0}.photo-frame{border:1px solid var(--cyan);padding:1.2rem;background:linear-gradient(#7ac6cf22 1px,transparent 1px),linear-gradient(90deg,#7ac6cf22 1px,transparent 1px);background-size:24px 24px}.photo-frame img{width:100%;height:620px;object-fit:cover;filter:saturate(.6) contrast(1.1)}.specimen figcaption{display:flex;justify-content:space-between;gap:1rem;margin-top:1rem;font-size:.65rem;letter-spacing:.1em;color:var(--cyan)}.specimen-legend{display:flex;justify-content:space-between;gap:1rem;border-top:1px solid var(--line);margin-top:3rem;padding-top:1rem;font-size:.74rem}.consult{display:grid;grid-template-columns:40% 1fr;gap:4vw;padding:7rem 4vw;background:#061b2b;background-image:linear-gradient(#2d607133 1px,transparent 1px),linear-gradient(90deg,#2d607133 1px,transparent 1px);background-size:40px 40px}.consult-title>span{font-size:.7rem;color:var(--cyan)}.consult h2{margin:2rem 0}.consult h2 strong{color:var(--acid)}.consult-title>p{max-width:33rem;line-height:1.9}.safety{border-left:3px solid var(--acid);padding-left:1rem;color:var(--acid)}.console{border:1px solid var(--cyan);background:#0c2a3e;box-shadow:15px 15px 0 #1d586a}.console-bar{display:flex;justify-content:space-between;gap:1rem;border-bottom:1px solid var(--cyan);padding:.8rem 1.2rem;color:var(--acid);font-size:.63rem}.console form{padding:clamp(1.5rem,3.5vw,4rem)}.progress{display:flex;justify-content:space-between;gap:1rem;margin-bottom:2rem;font-size:.7rem;color:var(--cyan)}.progress strong{color:var(--acid)}.step[hidden],.progress[hidden],#back[hidden],#next[hidden],#error[hidden]{display:none}.step fieldset{border:0;padding:0;margin:0;min-width:0}.step legend,.step h3{font-family:"Arial Black",sans-serif;font-size:clamp(1.4rem,2.6vw,2.2rem);line-height:1.3;margin-bottom:1.2rem}.hint{font-size:.83rem;color:#b1d3dc}.step label{display:block;position:relative;margin:.65rem 0}.step label input{position:absolute;opacity:0}.step label span{display:block;padding:1rem;border:1px solid var(--line);font-weight:700;cursor:pointer;transition:background .2s,transform .2s}.step label small{display:block;color:#adcbd0;font-size:.77rem;margin-top:.2rem}.step label input:checked+span{background:#1d586a;border-color:var(--acid);transform:translateX(5px)}.step label input:focus-visible+span{outline:3px solid var(--acid)}#summary div,#done-summary div{display:grid;grid-template-columns:130px 1fr;gap:1rem;border-bottom:1px solid var(--line);padding:.75rem 0}#summary dt,#done-summary dt{color:var(--cyan)}#summary dd,#done-summary dd{margin:0}.review-note{padding:1rem;background:#1d586a;margin-top:1rem}.review-note p{margin:.5rem 0 0}.error{color:#ff9b9b}.controls{display:flex;gap:.7rem;flex-wrap:wrap;margin-top:2rem}.controls button{border:1px solid var(--cyan);background:transparent;color:var(--paper);padding:.75rem 1rem;cursor:pointer;font-size:.8rem}.controls .next{background:var(--acid);border-color:var(--acid);color:var(--deep);font-weight:800}.controls .restart{border-color:transparent;text-decoration:underline}.controls button:hover{background:var(--cyan);color:var(--deep)}.end-panel{padding:8rem 4vw;background:var(--acid);color:var(--deep)}.end-panel>span{font-size:.7rem}.end-panel h2{font-family:"Arial Black",sans-serif;font-size:clamp(4rem,8vw,9rem);line-height:1.05;letter-spacing:-.1em;margin:2rem 0}.end-panel p{max-width:37rem}.end-panel a{display:inline-block;margin-top:2rem;border-bottom:2px solid var(--deep);text-decoration:none;font-weight:800}footer{display:flex;justify-content:space-between;gap:1rem;padding:1.5rem 2.5vw;font-size:.65rem}footer a{text-decoration:none}
@media(max-width:1000px){.header nav{display:none}.hero{grid-template-columns:1fr}.hero-type{min-height:650px;border-right:0;border-bottom:1px solid var(--line)}.diagram-panel{min-height:650px}.principle{grid-template-columns:1fr}.process-rows{grid-column:1}.specimen-head{grid-template-columns:1fr}.consult{grid-template-columns:1fr}.console{max-width:800px}}
@media(max-width:600px){.status-strip{font-size:.55rem}.status-strip span:nth-child(2),.status-strip span:nth-child(3){display:none}.header{min-height:72px}.brand{font-size:1.2rem}.return{font-size:.59rem}.hero-type{min-height:630px;padding:3rem 5vw 5rem}.hero h1{font-size:clamp(4.5rem,18vw,7rem)}.micro{margin-top:3rem}.hero-bottom{left:5vw;right:5vw}.diagram-panel{min-height:450px}.diagram-note{font-size:.65rem}.data-line{gap:2rem}.principle,.specimen,.consult{padding:5rem 5vw}.principle-main h2,.consult h2{font-size:clamp(3rem,11vw,5rem)}.process-rows article{grid-template-columns:55px 1fr;gap:.3rem 1rem}.process-rows article>span{grid-row:1/3;font-size:2rem}.process-rows h3{font-size:1.2rem}.process-rows p{grid-column:2}.process-rows b{display:none}.specimen h2{font-size:clamp(2.8rem,11vw,5rem)}.photo-frame{padding:.6rem}.photo-frame img{height:330px}.specimen figcaption,.specimen-legend{flex-direction:column}.console{box-shadow:7px 7px 0 #1d586a}.console form{padding:1.2rem}.progress{display:block}.progress strong{display:block}.end-panel{padding:6rem 5vw}.end-panel h2{font-size:clamp(3.7rem,15vw,6rem)}footer{flex-wrap:wrap}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.outer-orbit,.measure-ring,.part-ring,.inner-ring,.tool,.scan{animation:none}.step label span{transition:none}}
/* 日本語の句読点と行末を読みやすく整える */
h1,h2,h3,p{line-break:strict}
h1,h2,h3{text-wrap:balance}
p{text-wrap:pretty}
.principle-main h2{font-size:clamp(2.45rem,5vw,5rem)}

/* A real machining scene leads the page; the text occupies its own right-hand rail. */
.hero{grid-template-columns:minmax(0,1.3fr) minmax(0,.95fr);min-height:690px}
.hero-type{order:2;border-right:0;border-left:1px solid var(--line);padding:4rem 4vw 5rem}
.hero-type .micro{margin-top:2.7rem}
.hero h1{font-size:clamp(4rem,6.4vw,7.4rem);letter-spacing:-.08em}
.hero-bottom{left:4vw;right:4vw}
.machining-photo{order:1;display:block;min-width:0;min-height:690px;padding:0;margin:0;background:#17222a}
.machining-photo img{width:100%;height:100%;min-height:690px;object-fit:cover;object-position:60% center}
.machining-photo figcaption{position:absolute;left:1.5rem;right:1.5rem;bottom:1.5rem;display:flex;justify-content:space-between;gap:1rem;padding:.6rem .85rem;background:#061b2bdc;color:#f1f3dc;font-size:.63rem;letter-spacing:.05em}
@media(max-width:1000px){
  .hero{display:flex;flex-direction:column}
  .hero-type{order:2;min-height:0;border-left:0;border-top:1px solid var(--line);padding:2.7rem 5vw 3.5rem}
  .hero-type .micro{margin-top:1.8rem}
  .hero h1{font-size:clamp(4rem,9vw,6.8rem);margin-bottom:1rem}
  .hero-bottom{position:static;margin-top:2.4rem}
  .machining-photo,.machining-photo img{min-height:0;height:clamp(320px,48vw,480px)}
}
@media(max-width:600px){
  .machining-photo,.machining-photo img{height:285px}
  .machining-photo img{object-position:64% center}
  .machining-photo figcaption{left:.7rem;right:.7rem;bottom:.7rem;display:block;font-size:.55rem}
  .machining-photo figcaption span{display:block}
  .hero-type{padding:1.5rem 5vw 2.5rem}
  .hero-type .micro{margin-top:1rem}
  .hero h1{font-size:clamp(3.9rem,14.5vw,5.3rem);margin:.65rem 0 1rem}
  .hero-sub{font-size:.87rem;line-height:1.7}
  .hero-link{margin-top:1.2rem}
  .hero-bottom{margin-top:1.5rem}
}

/* Industry title leads the drawing rail beside the lathe photo. */
.hero h1{font-size:clamp(3.9rem,6vw,7.2rem);letter-spacing:-.075em;margin:.8rem 0 .6rem}
.hero h1 span{color:var(--paper)}
.hero-phrase{display:inline-block;align-self:flex-start;color:var(--acid);font-size:clamp(1.55rem,2.3vw,2.5rem);font-weight:800;letter-spacing:.02em;margin:.1rem 0 1.2rem;border-top:1px solid var(--line);padding-top:.35rem}
@media(max-width:1000px){.hero h1{font-size:clamp(4rem,9vw,6.5rem)}}
@media(max-width:600px){.hero h1{font-size:clamp(3.7rem,14vw,5.2rem);margin:.55rem 0 .3rem}.hero-phrase{font-size:1.45rem;margin:0 0 .75rem}.hero-type{padding-top:1.2rem}}