/* 見本：金折製作所（架空の精密板金メーカー）— 白い図面 × 紺の細い線 × 黄色の目印（2026-11-15 真っ青の面をやめた） */
:root {
  --blue: #1d2e57; --blue-d: #121e3c; --blue-l: #e6e9f1; --dwg: #f9f9f6; --nline: rgba(29,46,87,.45);
  --paper: #eef0f2; --white: #fbfcfd; --steel: #dde1e6;
  --ink: #0b0e14; --ink2: #161b24; --mute: #1f2430;
  --line: rgba(11,14,20,.18); --wline: rgba(255,255,255,.55);
  --mark: #ffd23f;
  --f-ja: "BIZ UDPGothic", "Hiragino Sans", "Yu Gothic", sans-serif;
  --f-en: "Barlow Condensed", "Arial Narrow", sans-serif;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--paper); color: var(--ink); font-family: var(--f-ja); font-size: 17px; line-height: 1.9; letter-spacing: .03em; overflow-x: clip; }
a { color: inherit; text-underline-offset: .25em; }
img, svg { display: block; max-width: 100%; }
img { height: auto; }
::selection { background: var(--blue); color: #fff; }
:focus-visible { outline: 2px solid var(--mark); outline-offset: 3px; }
.wrap { width: min(1180px, 100% - 48px); margin-inline: auto; }
.ic { width: 20px; height: 20px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; flex: none; }
h1, h2, h3 { margin: 0; font-weight: 700; letter-spacing: .04em; }
h2 { font-size: clamp(28px, 3.4vw, 42px); line-height: 1.4; }
h3 { font-size: 20px; line-height: 1.5; }

/* ボタン */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 12px; min-height: 54px; padding: 0 26px; background: var(--blue); color: #fff; text-decoration: none; font: 700 16px/1.2 var(--f-ja); letter-spacing: .06em; border: 0; border-radius: 2px; cursor: pointer; transition: background .25s, color .25s, box-shadow .25s; }
.btn:hover { background: var(--ink); }
.btn .ic { transition: transform .25s; } .btn:hover .ic { transform: translateX(4px); }
.btn.line { background: transparent; color: var(--ink); box-shadow: inset 0 0 0 2px var(--ink); }
.btn.line:hover { background: var(--ink); color: #fff; }

/* ヘッダー（transform・backdrop-filter は付けない） */
.hd { position: fixed; inset: 0 0 auto; z-index: 40; display: flex; align-items: center; gap: 28px; padding: 18px 40px; color: var(--blue); transition: background .3s, color .3s, padding .3s, box-shadow .3s; }
.hd.scrolled, body:not(.is-top) .hd { background: var(--white); color: var(--ink); padding-block: 12px; box-shadow: 0 1px 0 var(--line); }
.brand { display: flex; align-items: center; gap: 12px; text-decoration: none; }
.brand-mk { width: 38px; height: 38px; }
.brand span { display: flex; flex-direction: column; line-height: 1.15; }
.brand b { font-size: 21px; letter-spacing: .14em; }
.brand small { font: 600 12.5px/1.2 var(--f-en); letter-spacing: .16em; }
.nav { margin-left: auto; display: flex; gap: 26px; font-size: 15px; font-weight: 700; }
.nav a { text-decoration: none; padding: 6px 0; background: linear-gradient(currentColor, currentColor) 0 100% / 0 2px no-repeat; transition: background-size .3s; }
.nav a:hover, .nav a[aria-current] { background-size: 100% 2px; }
.hd-btn { min-height: 46px; padding: 0 20px; font-size: 14.5px; background: var(--blue); color: #fff; }
.hd.scrolled .hd-btn, body:not(.is-top) .hd-btn { background: var(--blue); color: #fff; }
.hd-btn:hover { background: var(--mark); color: var(--ink); }
.menu-btn { display: none; }
@media (max-width: 960px) {
  .nav, .hd-btn { display: none; }
  .hd, .hd.scrolled, body:not(.is-top) .hd { padding: 12px 16px; }
  .brand b { font-size: 19px; }
  .menu-btn { display: block; margin-left: auto; width: 46px; height: 46px; border: 0; background: none; position: relative; cursor: pointer; color: inherit; }
  .menu-btn i { position: absolute; left: 11px; right: 11px; height: 2px; background: currentColor; transition: transform .3s, opacity .3s; }
  .menu-btn i:nth-child(1) { top: 15px; } .menu-btn i:nth-child(2) { top: 22px; } .menu-btn i:nth-child(3) { top: 29px; }
  body.open .hd { color: var(--blue); background: transparent; box-shadow: none; }
  .open .menu-btn i:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .open .menu-btn i:nth-child(2) { opacity: 0; }
  .open .menu-btn i:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
}
.sp { position: fixed; inset: 0; z-index: 39; background: var(--dwg); color: var(--blue); display: flex; flex-direction: column; justify-content: center; padding: 90px 24px 40px; visibility: hidden; opacity: 0; transition: opacity .25s, visibility .25s; overflow-y: auto;
  background-image: linear-gradient(rgba(29,46,87,.07) 1px, transparent 1px), linear-gradient(90deg, rgba(29,46,87,.07) 1px, transparent 1px); background-size: 28px 28px; }
.open .sp { visibility: visible; opacity: 1; }
.sp a:not(.btn) { display: flex; align-items: baseline; gap: 16px; padding: 13px 0; border-bottom: 1px solid var(--nline); text-decoration: none; font-size: 22px; font-weight: 700; }
.sp .no { font: 600 17px var(--f-en); letter-spacing: .1em; }
.sp .btn { margin-top: 26px; background: var(--blue); color: #fff; }
.sp-tel { margin: 18px 0 0; font-size: 15px; }
.sp-tel b { font: 600 22px var(--f-en); letter-spacing: .06em; }

/* 最初の画面：白い図面（方眼は紺の細い線） */
.hero { position: relative; min-height: 100vh; min-height: 100svh; background: var(--dwg); color: var(--blue); overflow: hidden; display: flex; align-items: center; padding: 110px 0 120px;
  background-image: radial-gradient(ellipse at 70% 45%, rgba(255,210,63,.05), transparent 60%), linear-gradient(rgba(29,46,87,.09) 1px, transparent 1px), linear-gradient(90deg, rgba(29,46,87,.09) 1px, transparent 1px), linear-gradient(rgba(29,46,87,.04) 1px, transparent 1px), linear-gradient(90deg, rgba(29,46,87,.04) 1px, transparent 1px);
  background-size: auto, 80px 80px, 80px 80px, 16px 16px, 16px 16px; }
.sheet { position: absolute; inset: 84px 18px 18px; border: 1.5px solid var(--nline); pointer-events: none; }
.sheet::before { content: ""; position: absolute; inset: 8px; border: 1px solid rgba(29,46,87,.22); }
.zone { position: absolute; display: flex; font: 600 12.5px/1 var(--f-en); color: var(--blue); }
.zx { left: 0; right: 0; top: -1px; height: 8px; }
.zx i { flex: 1; font-style: normal; text-align: center; border-right: 1px solid rgba(29,46,87,.28); padding-top: 0; transform: translateY(-14px); }
.zx i:last-child { border: 0; }
.zy { top: 0; bottom: 0; left: -1px; width: 8px; flex-direction: column; }
.zy i { flex: 1; font-style: normal; display: flex; align-items: center; transform: translateX(-13px); }
.hero-in { position: relative; z-index: 2; display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr); gap: 40px; align-items: center; }
.tag { display: inline-block; margin: 0 0 22px; padding: 5px 12px; background: var(--blue); color: #fff; font-size: 14.5px; font-weight: 700; letter-spacing: .1em; }
.hero h1 { font-size: clamp(38px, 4.9vw, 66px); line-height: 1.3; letter-spacing: .05em; }
.lead { margin: 26px 0 0; max-width: 31em; font-size: 17.5px; line-height: 2; }
.hero-cta { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 34px; }
.hero .btn { background: var(--blue); color: #fff; }
.hero .btn:hover { background: var(--mark); color: var(--ink); }
.hero .btn.ghost { background: transparent; color: var(--blue); box-shadow: inset 0 0 0 1.5px var(--blue); }
.hero .btn.ghost:hover { background: var(--blue); color: #fff; }
.hero-note { margin: 18px 0 0; font-size: 15px; }
.hero-note b { background: var(--mark); color: var(--ink); padding: 1px 6px; margin: 0 2px; }

/* 展開図 → 箱 */
.stage-wrap { display: flex; flex-direction: column; align-items: center; }
.stage { position: relative; width: 460px; height: 400px; perspective: 1500px; perspective-origin: 50% 30%; }
.dims { position: absolute; inset: 0; width: 100%; height: 100%; overflow: visible; transition: opacity .6s; }
.dims .dl path { fill: none; stroke: var(--blue); stroke-width: 1; }
.dims .dl path.ah { fill: var(--blue); stroke: none; }
.dims .dt { fill: var(--blue); font: 600 15px var(--f-en); letter-spacing: .06em; text-anchor: middle; }
.dims .dt.sm { font: 700 13px var(--f-ja); letter-spacing: .12em; }
.dims .dl path { stroke-dasharray: 400; stroke-dashoffset: 400; }
.stage.p0 .dims .dl path { animation: draw 1.2s .3s ease-out forwards; }
.dims .dt { opacity: 0; }
.stage.p0 .dims .dt { animation: fade .6s 1s forwards; }
.stage.p2 .dims { opacity: 0; }
.piece { position: absolute; left: 100px; top: 110px; width: 260px; height: 180px; transform-style: preserve-3d; transition: transform 1.3s cubic-bezier(.6,0,.2,1); transform: rotateX(0) rotateZ(0); }
.stage.p2 .piece { transform: translateY(26px) rotateX(calc(58deg + var(--tx, 0deg))) rotateZ(calc(-34deg + var(--tz, 0deg))); }
.stage.p3 .piece { transition-duration: .7s; transition-timing-function: cubic-bezier(.2,.7,.3,1); }
.face { position: absolute; transform-style: preserve-3d; background: rgba(29,46,87,.035); transition: background .8s; }
.face > svg { position: absolute; inset: 0; width: 100%; height: 100%; overflow: visible; }
.face .edge { fill: none; stroke: var(--blue); stroke-width: 1.6; stroke-dasharray: 1000; stroke-dashoffset: 1000; }
.stage.p0 .face .edge { animation: draw 1.4s ease-out forwards; }
.face .bend { fill: none; stroke: #e0a800; stroke-width: 1.6; stroke-dasharray: 6 5; opacity: 0; transition: opacity .5s; }
.stage.p0 .face .bend { opacity: 1; transition-delay: 1.2s; }
.stage.p2 .face .bend { opacity: 0; transition-delay: 0s; }
.face .hole { fill: var(--dwg); stroke: var(--blue); stroke-width: 1.3; transform-box: fill-box; transform-origin: center; transform: scale(0); transition: transform .35s cubic-bezier(.3,1.6,.5,1); transition-delay: calc(var(--i, 0) * 45ms); }
.stage.p1 .face .hole { transform: scale(1); }
.base { position: relative; width: 260px; height: 180px; }
.fl { left: 0; }
.fk-t { bottom: 100%; width: 260px; height: 80px; transform-origin: 50% 100%; transition: transform .75s cubic-bezier(.5,0,.25,1), background .8s; }
.fk-b { top: 100%; width: 260px; height: 80px; transform-origin: 50% 0; transition: transform .75s cubic-bezier(.5,0,.25,1), background .8s; }
.fk-l { right: 100%; left: auto; top: 0; width: 80px; height: 180px; transform-origin: 100% 50%; transition: transform .75s cubic-bezier(.5,0,.25,1), background .8s; }
.fk-r { left: 100%; top: 0; width: 80px; height: 180px; transform-origin: 0 50%; transition: transform .75s cubic-bezier(.5,0,.25,1), background .8s; }
.piece.b1 .fk-b { transform: rotateX(90deg); }
.piece.b2 .fk-t { transform: rotateX(-90deg); }
.piece.b3 .fk-l { transform: rotateY(90deg); }
.piece.b4 .fk-r { transform: rotateY(-90deg); }
.stage.p2 .base { background: rgba(29,46,87,.08); }
.stage.p2 .fk-b { background: rgba(29,46,87,.2); }
.stage.p2 .fk-l { background: rgba(29,46,87,.13); }
.stage.p2 .fk-t { background: rgba(29,46,87,.06); }
.stage.p2 .fk-r { background: rgba(29,46,87,.27); }
.bl { position: absolute; left: 50%; top: 50%; transform: translate(-50%,-50%); font: 700 13px var(--f-ja); letter-spacing: .06em; color: var(--ink); background: var(--mark); padding: 1px 7px; white-space: nowrap; opacity: 0; transition: opacity .4s; pointer-events: none; }
.stage.p0 .bl { opacity: 1; transition-delay: 1.3s; }
.stage.p2 .bl { opacity: 0; transition-delay: 0s; }
.qc { position: absolute; right: 0; bottom: 6px; margin: 0; display: flex; align-items: center; gap: 10px; padding: 7px 14px 7px 7px; background: var(--blue); color: #fff; font-size: 14.5px; font-weight: 700; opacity: 0; transform: translateY(8px); transition: opacity .5s, transform .5s; }
.qc span { background: var(--mark); color: var(--ink); padding: 2px 9px; font-size: 13px; }
.stage.p3 .qc { opacity: 1; transform: none; }
.steps-bar { display: flex; align-items: center; gap: 18px; margin-top: 18px; flex-wrap: wrap; justify-content: center; }
.ph { list-style: none; margin: 0; padding: 0; display: flex; gap: 4px; }
.ph li { display: flex; align-items: baseline; gap: 6px; padding: 7px 12px; font-size: 14px; font-weight: 700; color: var(--blue); border-top: 2px solid rgba(29,46,87,.28); transition: border-color .3s, background .3s; }
.ph li b { font: 600 15px var(--f-en); }
.ph li.on { border-color: #e0a800; background: rgba(255,210,63,.28); }
.replay { display: inline-flex; align-items: center; gap: 8px; min-height: 42px; padding: 0 14px; background: none; border: 1.5px solid var(--blue); color: var(--blue); font: 700 14px var(--f-ja); cursor: pointer; border-radius: 2px; }
.replay .ic { width: 17px; height: 17px; }
.replay:hover { background: var(--blue); color: #fff; }
.title-block { position: absolute; right: 18px; bottom: 18px; z-index: 2; border-collapse: collapse; font-size: 13px; color: var(--blue); background: var(--dwg); }
.title-block th, .title-block td { border: 1px solid var(--nline); padding: 4px 12px; text-align: left; white-space: nowrap; line-height: 1.5; }
.title-block th { font-weight: 700; }
@keyframes draw { to { stroke-dashoffset: 0; } }
@keyframes fade { to { opacity: 1; } }

/* 数字 */
.nums { background: var(--ink); color: #fff; }
.nums-in { display: grid; grid-template-columns: repeat(5, 1fr); }
.num { padding: 30px 22px 28px; border-left: 1px solid rgba(255,255,255,.22); display: flex; flex-direction: column; gap: 6px; }
.num:last-child { border-right: 1px solid rgba(255,255,255,.22); }
.num .k { font-size: 14.5px; font-weight: 700; }
.num .v { display: flex; align-items: baseline; gap: 6px; }
.num b { font: 600 clamp(44px, 4.6vw, 60px)/1 var(--f-en); letter-spacing: .02em; font-variant-numeric: tabular-nums; }
.num small { font-size: 15px; font-weight: 700; }

/* 区画 */
.sec { padding: clamp(80px, 10vw, 130px) 0; }
.sh { max-width: 760px; margin-bottom: 48px; }
.sh p { margin: 18px 0 0; font-size: 17.5px; }
.sh-row { max-width: none; display: flex; align-items: end; justify-content: space-between; gap: 30px; flex-wrap: wrap; }
.sh-row p { margin: 0; }
.rv { opacity: 0; transition: opacity 1s ease; transition-delay: var(--d, 0s); }
.rv.in { opacity: 1; }

/* 工程 */
.proc { display: grid; grid-template-columns: 1.05fr 1fr; gap: 56px; align-items: start; }
.proc-ph { margin: 0; position: sticky; top: 100px; }
.proc-ph img { width: 100%; aspect-ratio: 4 / 3.4; object-fit: cover; }
.proc-ph figcaption { margin-top: 10px; font-size: 14.5px; font-weight: 700; }
.proc-list { list-style: none; margin: 0; padding: 0; border-top: 2px solid var(--ink); }
.proc-list li { display: grid; grid-template-columns: 74px 1fr; gap: 10px; padding: 24px 0; border-bottom: 1px solid var(--line); }
.pn { font: 600 34px/1 var(--f-en); color: var(--blue); }
.proc-list h3 { font-size: 22px; }
.proc-list p { margin: 6px 0 0; }

/* 製作事例 */
.works { background: var(--white); }
.wk { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.wk-c { background: var(--paper); display: flex; flex-direction: column; }
.wk-c figure { margin: 0; overflow: hidden; }
.wk-c img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; transition: transform 1s cubic-bezier(.2,.8,.2,1); }
.wk-c:hover img { transform: scale(1.04); }
.wk-t { padding: 22px 24px 26px; }
.wk-t > p:not(.cat) { margin: 14px 0 0; }
.cat { display: inline-block; margin: 0 0 10px; padding: 3px 12px; background: var(--ink); color: #fff; font-size: 14px; font-weight: 700; letter-spacing: .08em; }
.spec { display: grid; grid-template-columns: auto 1fr; margin: 14px 0 0; border-top: 1px solid var(--line); font-size: 15px; }
.spec dt, .spec dd { margin: 0; padding: 6px 0; border-bottom: 1px solid var(--line); }
.spec dt { font-weight: 700; padding-right: 18px; }
.spec dd { font-family: var(--f-ja); }
.wk-a { grid-column: 1 / -1; display: grid; grid-template-columns: 1.4fr 1fr; }
.wk-a img { aspect-ratio: auto; height: 100%; min-height: 360px; }
.wk-a .wk-t { padding: 34px 36px; align-self: center; }
.wk-a h3 { font-size: 26px; }
.wk-txt { background: var(--blue); color: #fff; }
.wk-txt .cat { background: #fff; color: var(--blue); }
.wk-txt .spec, .wk-txt .spec dt, .wk-txt .spec dd { border-color: rgba(255,255,255,.4); }
.wk-txt .wk-t { padding: 30px 28px; }
.wk .wk-c:not(.wk-a):not(.wk-txt) img { aspect-ratio: 4 / 3; }

/* 図面がなくても */
.band { position: relative; background: var(--ink); color: #fff; overflow: hidden; }
.band-ph { position: absolute; inset: 0 0 0 45%; }
.band-ph img { width: 100%; height: 100%; object-fit: cover; }
.band-ph::after { content: ""; position: absolute; inset: 0; background: linear-gradient(90deg, var(--ink) 0%, rgba(11,14,20,.55) 40%, rgba(11,14,20,.1) 100%); }
.band-in { position: relative; padding: clamp(80px, 9vw, 120px) 0; }
.band-in > * { max-width: 560px; }
.band-in p { margin: 22px 0 0; }
.chips { list-style: none; display: flex; flex-wrap: wrap; gap: 8px; margin: 28px 0 0; padding: 0; }
.chips li { padding: 6px 14px; border: 1.5px solid #fff; font-size: 15px; font-weight: 700; }

/* 流れ */
.flow { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(4, 1fr); position: relative; }
.flow::before { content: ""; position: absolute; left: 0; right: 0; top: 23px; height: 2px; background: var(--ink); transform-origin: 0 50%; transform: scaleX(var(--p, 1)); transition: transform 1.6s cubic-bezier(.4,0,.2,1); }
.flow li { position: relative; padding: 0 26px 0 0; }
.fn { position: relative; display: inline-grid; place-items: center; width: 48px; height: 48px; background: var(--paper); border: 2px solid var(--ink); font: 600 20px var(--f-en); margin-bottom: 18px; transition: background .4s, color .4s, border-color .4s; transition-delay: var(--dl, 0s); }
.flow.lit .fn { background: var(--blue); color: #fff; border-color: var(--blue); }
.flow h3 { font-size: 21px; }
.flow p { margin: 8px 0 12px; }
.fd { display: inline-block; padding: 2px 10px; background: var(--mark); font-size: 14.5px; font-weight: 700; }

/* 取引先 */
.trade { background: var(--steel); }
.trade-in { display: grid; grid-template-columns: 1fr 1.5fr; gap: 50px; align-items: start; }
.trade-in p { margin: 18px 0 0; }
.ind { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(2, 1fr); border-top: 2px solid var(--ink); }
.ind li { padding: 18px 16px 18px 0; border-bottom: 1px solid var(--line); display: flex; flex-direction: column; }
.ind b { font-size: 19px; }
.ind span { font-size: 15.5px; }

/* 会社案内 */
.co { display: grid; grid-template-columns: 1fr 1.1fr; gap: 56px; align-items: start; }
.dl { display: grid; grid-template-columns: 6em 1fr; margin: 30px 0 34px; border-top: 2px solid var(--ink); }
.dl dt, .dl dd { margin: 0; padding: 14px 0; border-bottom: 1px solid var(--line); }
.dl dt { font-weight: 700; }
.co-ph { margin: 0 0 18px; }
.co-ph img { width: 100%; aspect-ratio: 16 / 10; object-fit: cover; }
.map svg { width: 100%; height: auto; border: 1px solid var(--line); }

/* お問い合わせ */
.contact { background: var(--dwg); color: var(--blue); background-image: linear-gradient(rgba(29,46,87,.08) 1px, transparent 1px), linear-gradient(90deg, rgba(29,46,87,.08) 1px, transparent 1px); background-size: 40px 40px; border-top: 1px solid var(--line); }
.ct { display: grid; grid-template-columns: 1fr 1.3fr; gap: 56px; align-items: start; }
.ct-l p { margin: 22px 0 0; }
.ct-tel { margin-top: 34px; padding: 20px 0; border-top: 1.5px solid var(--nline); border-bottom: 1.5px solid var(--nline); display: flex; flex-direction: column; }
.ct-tel span { font-size: 14.5px; font-weight: 700; }
.ct-tel b { font: 600 40px/1.2 var(--f-en); letter-spacing: .05em; }
.ct-tel small { font-size: 14.5px; }
.form { background: #fff; color: var(--ink); padding: 34px; display: grid; gap: 18px; box-shadow: 0 0 0 1.5px var(--blue), 8px 8px 0 rgba(255,210,63,.55); }
.form label, .form fieldset { display: grid; gap: 6px; font-size: 15px; font-weight: 700; }
.row2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form input:not([type=radio]), .form textarea { width: 100%; font: 400 16px var(--f-ja); color: var(--ink); padding: 12px 14px; border: 1.5px solid #9aa3ad; border-radius: 2px; background: #fff; }
.form input::placeholder, .form textarea::placeholder { color: #4a5260; }
.form input:focus, .form textarea:focus { outline: none; border-color: var(--blue); box-shadow: 0 0 0 3px var(--blue-l); }
.kind { border: 0; padding: 0; margin: 0; display: flex !important; flex-wrap: wrap; gap: 8px; }
.kind legend { width: 100%; padding: 0; margin-bottom: 6px; }
.kind label { display: block; }
.kind input { position: absolute; opacity: 0; }
.kind span { display: inline-block; padding: 8px 16px; border: 1.5px solid var(--ink); cursor: pointer; font-weight: 700; transition: background .2s, color .2s; }
.kind input:checked + span { background: var(--ink); color: #fff; }
.kind input:focus-visible + span { outline: 2px solid var(--blue); outline-offset: 2px; }
.file input { padding: 10px !important; background: var(--paper) !important; }
.file em { font-style: normal; font-weight: 400; font-size: 14px; }
.form .btn { justify-self: start; }
.sent { margin: 0; padding: 14px 16px; background: var(--blue-l); border-left: 0; font-weight: 700; }

/* フッター */
.ft { background: var(--ink); color: #fff; padding: 46px 0 90px; }
.ft-in { display: flex; flex-wrap: wrap; align-items: center; gap: 20px 40px; }
.ft nav { display: flex; flex-wrap: wrap; gap: 8px 24px; font-size: 15px; font-weight: 700; }
.ft nav a { text-decoration: none; }
.ft p { margin: 0; width: 100%; font-size: 14px; }

/* 下層ページ（設備と加工） */
.phd { background: var(--dwg); color: var(--blue); padding: 150px 0 64px; border-bottom: 1px solid var(--line); background-image: linear-gradient(rgba(29,46,87,.08) 1px, transparent 1px), linear-gradient(90deg, rgba(29,46,87,.08) 1px, transparent 1px); background-size: 40px 40px; position: relative; overflow: hidden; }
.crumb { font-size: 14.5px; margin: 0 0 16px; font-weight: 700; }
.crumb a { text-decoration: underline; }
.phd h1 { font-size: clamp(34px, 4.4vw, 56px); line-height: 1.35; }
.phd p.lead { max-width: 36em; }
.phd-dim { position: absolute; right: -40px; bottom: -30px; width: 420px; opacity: .35; color: var(--blue); }

.mx-pick { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 26px; }
.mx-pick button { display: flex; flex-direction: column; align-items: flex-start; gap: 2px; min-width: 140px; padding: 12px 16px; background: var(--white); color: var(--ink); border: 1.5px solid var(--ink); cursor: pointer; font: 700 16px var(--f-ja); text-align: left; border-radius: 2px; transition: background .2s, color .2s; }
.mx-pick button small { font: 600 15px var(--f-en); letter-spacing: .06em; }
.mx-pick button[aria-pressed=true] { background: var(--blue); border-color: var(--blue); color: #fff; }
.mx-detail { display: grid; grid-template-columns: 1fr 1.5fr; gap: 30px; padding: 30px; background: var(--white); border-top: 3px solid var(--blue); margin-bottom: 40px; }
.mx-detail h3 { font-size: 26px; }
.mx-detail .en { font: 600 18px var(--f-en); letter-spacing: .08em; color: var(--blue); }
.mx-detail p { margin: 10px 0 0; }
.mx-bars { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; }
.mx-bars li { display: grid; grid-template-columns: 9em 1fr 6.5em; gap: 12px; align-items: center; font-size: 15.5px; font-weight: 700; }
.mx-bars .bar { height: 12px; background: var(--steel); position: relative; overflow: hidden; }
.mx-bars .bar i { position: absolute; inset: 0 auto 0 0; width: var(--w, 0%); background: var(--blue); transition: width .7s cubic-bezier(.2,.8,.2,1); }
.mx-bars li.na .bar i { width: 0; }
.mx-bars .val { font: 600 17px var(--f-en); letter-spacing: .04em; text-align: right; font-variant-numeric: tabular-nums; }
.mx-bars li.na .val { font: 700 14px var(--f-ja); }
.mx-wrap { overflow-x: auto; }
.mx { width: 100%; border-collapse: collapse; background: var(--white); font-size: 15.5px; min-width: 820px; }
.mx th, .mx td { border: 1px solid var(--line); padding: 12px 10px; text-align: center; }
.mx thead th { background: var(--ink); color: #fff; font-weight: 700; }
.mx tbody th { text-align: left; white-space: nowrap; cursor: pointer; }
.mx tbody th small { display: block; font: 600 14px var(--f-en); letter-spacing: .06em; }
.mx td { font: 600 17px var(--f-en); letter-spacing: .03em; font-variant-numeric: tabular-nums; transition: background .25s, color .25s; }
.mx td.no { font: 700 14px var(--f-ja); }
.mx tr.on th, .mx tr.on td { background: var(--blue); color: #fff; border-color: rgba(255,255,255,.3); }
.mx-note { margin: 14px 0 0; font-size: 15px; }

.eq { display: grid; grid-template-columns: repeat(2, 1fr); gap: 0 48px; border-top: 2px solid var(--ink); }
.eq-g { padding: 26px 0; border-bottom: 1px solid var(--line); }
.eq-g h3 { display: flex; align-items: baseline; gap: 12px; font-size: 21px; }
.eq-g h3 span { font: 600 15px var(--f-en); letter-spacing: .1em; color: var(--blue); }
.eq-g table { width: 100%; border-collapse: collapse; margin-top: 12px; font-size: 15.5px; }
.eq-g td { padding: 7px 0; border-bottom: 1px dashed var(--line); vertical-align: top; }
.eq-g td:last-child { text-align: right; font: 600 18px var(--f-en); white-space: nowrap; padding-left: 12px; }
.eq-ph { display: grid; grid-template-columns: 1.4fr 1fr; gap: 18px; margin-bottom: 40px; }
.eq-ph figure { margin: 0; }
.eq-ph img { width: 100%; height: 100%; aspect-ratio: 16 / 10; object-fit: cover; }
.eq-ph figcaption { margin-top: 8px; font-size: 14.5px; font-weight: 700; }
.qa { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.qa-c { background: var(--white); padding: 28px; border-top: 3px solid var(--ink); }
.qa-c .big { font: 600 48px/1 var(--f-en); color: var(--blue); letter-spacing: .02em; margin: 6px 0 12px; display: block; }
.qa-c .big small { font-size: 20px; margin-left: 4px; }
.qa-c p { margin: 0; }
.cta { background: var(--ink); color: #fff; padding: 70px 0; }
.cta-in { display: flex; align-items: center; justify-content: space-between; gap: 30px; flex-wrap: wrap; }
.cta .btn { background: #fff; color: var(--blue); }
.cta .btn:hover { background: var(--mark); color: var(--ink); }

/* タブレット・スマホ */
@media (max-width: 1100px) {
  .hero-in { grid-template-columns: minmax(0, 1fr); gap: 30px; }
  .stage-wrap { min-width: 0; }
  .stage { flex: none; }
  .title-block { display: none; }
  .stage-wrap { margin-top: 10px; }
}
@media (max-width: 960px) {
  .nums-in { grid-template-columns: repeat(3, 1fr); }
  .num:nth-child(4), .num:nth-child(5) { border-top: 1px solid rgba(255,255,255,.22); }
  .num:nth-child(3) { border-right: 1px solid rgba(255,255,255,.22); }
  .proc, .co, .ct, .trade-in { grid-template-columns: 1fr; gap: 34px; }
  .proc-ph { position: static; }
  .wk { grid-template-columns: 1fr 1fr; }
  .wk-a { grid-template-columns: 1fr; }
  .wk-a img { min-height: 0; aspect-ratio: 16 / 10; }
  .flow { grid-template-columns: 1fr 1fr; gap: 34px 0; }
  .flow::before { display: none; }
  .mx-detail { grid-template-columns: 1fr; }
  .eq { grid-template-columns: 1fr; }
  .qa { grid-template-columns: 1fr; }
  .band-ph { inset: 0; }
  .band-ph::after { background: rgba(11,14,20,.72); }
}
@media (max-width: 640px) {
  body { font-size: 17px; }
  .wrap { width: calc(100% - 32px); }
  .hero { padding: 96px 0 56px; align-items: flex-start; }
  .sheet { inset: 74px 8px 8px; }
  .zone { display: none; }
  .hero h1 { font-size: clamp(31px, 8.6vw, 40px); }
  .lead { font-size: 16.5px; }
  .hero-cta .btn { width: 100%; }
  .stage-wrap { width: 100%; }
  .hero-in { display: flex; flex-direction: column; align-items: stretch; gap: 0; }
  .hero-txt { display: contents; }
  .tag { order: 1; align-self: flex-start; margin-bottom: 16px; }
  .hero h1 { order: 2; }
  .stage-wrap { order: 3; margin: 14px 0 6px; }
  .lead { order: 4; margin-top: 18px; }
  .hero-cta { order: 5; margin-top: 24px; }
  .hero-note { order: 6; }
  .stage { transform: scale(.64); transform-origin: 50% 0; margin-bottom: -144px; }
  .steps-bar { width: 100%; }
  .ph { width: 100%; display: grid; grid-template-columns: repeat(4, 1fr); }
  .ph li { flex-direction: column; align-items: flex-start; gap: 0; padding: 6px 6px; font-size: 13px; line-height: 1.4; }
  .ph li b { font-size: 14px; }
  .steps-bar { gap: 10px; margin-top: 10px; }
  .nums-in { grid-template-columns: 1fr 1fr; }
  .num { padding: 22px 14px; border-left: 0; border-right: 0 !important; border-top: 1px solid rgba(255,255,255,.22); }
  .num:nth-child(odd) { border-right: 1px solid rgba(255,255,255,.22) !important; }
  .num:nth-child(1), .num:nth-child(2) { border-top: 0; }
  .num:last-child { grid-column: 1 / -1; border-right: 0 !important; }
  .wk { grid-template-columns: 1fr; }
  .wk-a .wk-t { padding: 24px 22px 28px; }
  .flow { grid-template-columns: 1fr; }
  .flow li { padding: 0; display: grid; grid-template-columns: 60px 1fr; column-gap: 6px; }
  .flow li > * { grid-column: 2; }
  .flow .fn { grid-column: 1; grid-row: 1 / span 3; }
  .flow .fd { justify-self: start; }
  .ind { grid-template-columns: 1fr; }
  .row2 { grid-template-columns: 1fr; }
  .form { padding: 22px 18px; }
  .form .btn { width: 100%; }
  .dl { grid-template-columns: 4.6em 1fr; }
  .ct-tel b { font-size: 34px; }
  .phd { padding: 116px 0 44px; }
  .phd-dim { display: none; }
  .mx-pick button { min-width: 0; flex: 1 1 calc(33% - 8px); padding: 10px 12px; font-size: 15px; }
  .mx-wrap, .mx-note { display: none; }
  .mx-detail { margin-bottom: 0; }
  .mx-detail { padding: 22px 18px; }
  .mx-bars li { grid-template-columns: 7.2em 1fr 5.6em; gap: 8px; font-size: 14.5px; }
  .eq-ph { grid-template-columns: 1fr; }
  .eq-g td:last-child { font-size: 16px; }
}
@media (prefers-reduced-motion: reduce) {
  .rv { opacity: 1; transition: none; }
  .piece, .face, .fl, .fk-t, .fk-b, .fk-l, .fk-r, .dims, .qc, .hole { transition: none !important; animation: none !important; }
  .face .edge, .dims .dl path { stroke-dashoffset: 0; animation: none !important; }
  .dims .dt { opacity: 1; }
  html { scroll-behavior: auto; }
}