:root{
  /* 鉄の温度からとった色 */
  --hakunetsu:#FFE7B0;   /* 白熱 1250℃ */
  --shakunetsu:#FF7A18;  /* 灼熱 1150℃ */
  --shinku:#C1272D;      /* 深紅  900℃ */
  --kurogane:#14110F;    /* 黒鉄  常温 */
  --tanetsu:#221C19;     /* 鍛鉄（パネル） */
  --hai:#8C817A;         /* 灰 */
  --kinari:#EDEAE3;      /* 生成（明部） */
  --sumi:#231F1C;        /* 墨（明部の文字） */

  --disp:"Shippori Mincho B1",serif;
  --body:"Zen Kaku Gothic New",system-ui,sans-serif;
  --num:"Oswald",sans-serif;

  --pad:clamp(20px,5vw,64px);
  --max:1180px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;background:var(--kurogane);color:#E8E2DB;
  font-family:var(--body);font-weight:400;line-height:1.9;
  font-size:16px;letter-spacing:.02em;-webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit}
.wrap{max-width:var(--max);margin:0 auto;padding-inline:var(--pad)}

/* ── 温度リボン（サイト全体の背骨） ───────────── */
.heatline{height:3px;border:0;margin:0;
  background:linear-gradient(90deg,var(--hakunetsu),var(--shakunetsu) 38%,var(--shinku) 70%,#3A2A24);}

/* ── ヘッダー ───────────────────────────── */
.hd{position:sticky;top:0;z-index:50;background:rgba(20,17,15,.86);backdrop-filter:blur(10px);
  border-bottom:1px solid rgba(255,255,255,.08)}
.hd-in{display:flex;align-items:center;gap:24px;height:66px}
.logo{font-family:var(--disp);font-weight:800;font-size:20px;letter-spacing:.14em;white-space:nowrap}
.logo small{display:block;font-family:var(--num);font-weight:300;font-size:9.5px;letter-spacing:.34em;color:var(--hai);margin-top:-2px}
.nav{display:flex;gap:26px;margin-left:auto;font-size:13.5px;letter-spacing:.08em}
.nav a{text-decoration:none;color:#CFC7BF;padding-block:6px;border-bottom:1px solid transparent;transition:.2s}
.nav a:hover,.nav a:focus-visible{color:#fff;border-color:var(--shakunetsu)}
.hd-cta{font-size:13px;letter-spacing:.08em;text-decoration:none;padding:9px 18px;
  background:var(--shakunetsu);color:#1A0F06;font-weight:700;border-radius:2px;white-space:nowrap}
.hd-cta:hover{background:var(--hakunetsu)}
@media(max-width:1120px){.nav{display:none}}

/* ── ヒーロー ───────────────────────────── */
.hero{position:relative;padding:clamp(56px,9vw,110px) 0 clamp(40px,6vw,72px);overflow:hidden}
.hero::before{content:"";position:absolute;inset:-30% -10% auto -10%;height:120%;
  background:radial-gradient(60% 50% at 22% 28%,rgba(255,122,24,.20),transparent 70%),
             radial-gradient(40% 40% at 80% 10%,rgba(193,39,45,.16),transparent 70%);
  pointer-events:none}
.hero>*{position:relative}
.eyebrow{font-family:var(--num);font-weight:300;font-size:12px;letter-spacing:.4em;color:var(--shakunetsu);
  display:flex;align-items:center;gap:14px}
.eyebrow::after{content:"";height:1px;flex:1;max-width:180px;background:linear-gradient(90deg,var(--shakunetsu),transparent)}
h1{font-family:var(--disp);font-weight:800;margin:22px 0 0;
  font-size:clamp(34px,7.2vw,74px);line-height:1.28;letter-spacing:.02em;color:#fff}
h1 .glow{color:var(--hakunetsu);text-shadow:0 0 26px rgba(255,122,24,.55)}
.lead{max-width:44em;margin:26px 0 0;color:#C8C0B8;font-size:clamp(14.5px,1.6vw,16.5px)}

/* 署名要素：打撃カウンター */
.strike{margin-top:clamp(36px,5vw,56px);border:1px solid rgba(255,255,255,.12);background:
  linear-gradient(180deg,rgba(255,255,255,.045),rgba(255,255,255,0));padding:22px 26px;max-width:560px}
.strike-top{display:flex;align-items:center;gap:10px;font-size:11.5px;letter-spacing:.22em;color:var(--hai)}
.dot{width:7px;height:7px;border-radius:50%;background:var(--shakunetsu);box-shadow:0 0 10px var(--shakunetsu)}
.strike-num{font-family:var(--num);font-weight:500;font-size:clamp(42px,8vw,64px);line-height:1;color:#fff;
  margin-top:8px;font-variant-numeric:tabular-nums}
.strike-num span{font-size:.32em;color:var(--hai);margin-left:10px;letter-spacing:.1em}
.beat{height:4px;margin-top:16px;background:#2E2622;position:relative;overflow:hidden}
.beat i{position:absolute;inset:0;transform-origin:left;transform:scaleX(0);
  background:linear-gradient(90deg,var(--hakunetsu),var(--shakunetsu))}
.strike-note{margin:12px 0 0;font-size:11.5px;color:#7E736C;letter-spacing:.04em}

/* ── 数字帯 ───────────────────────────── */
.facts{border-top:1px solid rgba(255,255,255,.1);border-bottom:1px solid rgba(255,255,255,.1)}
.facts-in{display:grid;grid-template-columns:repeat(6,1fr)}
.fact{padding:26px 18px;border-left:1px solid rgba(255,255,255,.08)}
.fact:first-child{border-left:0}
.fact b{display:block;font-family:var(--num);font-weight:500;font-size:clamp(24px,3vw,34px);color:#fff;line-height:1.1}
.fact b em{font-style:normal;font-size:.44em;color:var(--shakunetsu);margin-left:3px}
.fact span{display:block;font-size:11.5px;color:var(--hai);letter-spacing:.1em;margin-top:8px}
@media(max-width:880px){.facts-in{grid-template-columns:repeat(3,1fr)}
  .fact:nth-child(3n+1){border-left:0}.fact:nth-child(n+4){border-top:1px solid rgba(255,255,255,.08)}}
@media(max-width:480px){.facts-in{grid-template-columns:repeat(2,1fr)}
  .fact{border-left:1px solid rgba(255,255,255,.08)!important}
  .fact:nth-child(odd){border-left:0!important}
  .fact:nth-child(n+3){border-top:1px solid rgba(255,255,255,.08)}}

/* ── セクション共通 ─────────────────────── */
.sec{padding:clamp(64px,9vw,116px) 0}
.sec-head{max-width:52em}
.tag{font-family:var(--num);font-weight:300;font-size:11.5px;letter-spacing:.36em;color:var(--shakunetsu)}
h2{font-family:var(--disp);font-weight:800;font-size:clamp(26px,4.4vw,42px);line-height:1.45;
  margin:14px 0 0;letter-spacing:.03em;color:#fff}
.sec-head p{margin:20px 0 0;color:#BDB5AD}
.light h2{color:var(--sumi)}
.light .sec-head p{color:#5A524C}
.light .tag{color:#B3421B}

/* ── 工程（温度が下がっていく）───────────── */
.steps{margin-top:clamp(38px,5vw,60px);display:grid;gap:1px;background:rgba(255,255,255,.1);
  grid-template-columns:repeat(5,1fr)}
.step{background:var(--kurogane);padding:26px 20px 30px;position:relative}
.step::before{content:"";position:absolute;left:0;right:0;top:0;height:3px;background:var(--c)}
.step .t{font-family:var(--num);font-weight:500;font-size:22px;color:var(--c);letter-spacing:.04em}
.step h3{font-family:var(--disp);font-weight:600;font-size:19px;margin:10px 0 10px;color:#fff;letter-spacing:.06em}
.step p{margin:0;font-size:13.5px;color:#A9A099;line-height:1.85}
@media(max-width:900px){.steps{grid-template-columns:repeat(2,1fr)}}
@media(max-width:520px){.steps{grid-template-columns:1fr}}

/* ── 技術／設備 ───────────────────────── */
.grid2{display:grid;grid-template-columns:1.05fr .95fr;gap:clamp(28px,5vw,68px);margin-top:44px;align-items:start}
@media(max-width:900px){.grid2{grid-template-columns:1fr}}
.pts{list-style:none;margin:0;padding:0}
.pts li{padding:18px 0 18px 26px;border-top:1px solid rgba(255,255,255,.1);position:relative;font-size:14.5px;color:#C4BCB4}
.pts li::before{content:"";position:absolute;left:0;top:27px;width:12px;height:1px;background:var(--shakunetsu)}
.pts li:last-child{border-bottom:1px solid rgba(255,255,255,.1)}
.pts b{color:#fff;font-weight:700}
.plate{background:var(--tanetsu);border:1px solid rgba(255,255,255,.1);padding:8px 22px 22px}
.plate h4{font-family:var(--num);font-weight:300;letter-spacing:.28em;font-size:11.5px;color:var(--hai);margin:20px 0 6px}
table{width:100%;border-collapse:collapse;font-size:13px}
.plate td{padding:9px 0;border-bottom:1px dashed rgba(255,255,255,.13);color:#BDB5AD;vertical-align:top}
.plate td:last-child{text-align:right;font-family:var(--num);font-weight:300;color:#fff;white-space:nowrap;padding-left:12px}

/* ── 明るいセクション ───────────────────── */
.light{background:var(--kinari);color:var(--sumi)}
.bene{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:#D6D1C8;margin-top:44px;
  border:1px solid #D6D1C8}
.bene div{background:var(--kinari);padding:26px 20px}
.bene b{display:block;font-family:var(--num);font-weight:500;font-size:clamp(26px,3.4vw,36px);color:#B3421B;line-height:1.05}
.bene b em{font-style:normal;font-size:.42em;color:#8A6250;margin-left:4px}
.bene span{display:block;font-size:12px;color:#6B635C;letter-spacing:.08em;margin-top:8px}
.bene p{margin:10px 0 0;font-size:13px;color:#4A433E;line-height:1.8}
@media(max-width:900px){.bene{grid-template-columns:repeat(2,1fr)}}
@media(max-width:520px){.bene{grid-template-columns:1fr}}
.chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:26px}
.chips span{font-size:12.5px;border:1px solid #C9C3B9;padding:7px 13px;color:#4A433E;background:#F4F2ED}

/* ── 学歴不問バンド ─────────────────────── */
.edu{margin-top:38px;border:1px solid rgba(255,122,24,.42);
  background:linear-gradient(180deg,rgba(255,122,24,.10),rgba(255,122,24,.02));
  display:grid;grid-template-columns:1.25fr .75fr;gap:clamp(22px,3.6vw,48px);
  padding:clamp(24px,3.4vw,34px) clamp(22px,3.2vw,36px)}
.edu-k{display:inline-block;margin:0;font-size:11.5px;font-weight:700;letter-spacing:.18em;
  background:var(--shakunetsu);color:#1A0F06;padding:5px 12px}
.edu-t{font-family:var(--disp);font-weight:800;font-size:clamp(19px,2.7vw,26px);
  color:#fff;margin:16px 0 12px;letter-spacing:.03em;line-height:1.5}
.edu-p{margin:0;font-size:14px;color:#BDB5AD;line-height:1.95}
.edu-list{list-style:none;margin:0;padding:0;align-self:center}
.edu-list li{display:flex;align-items:baseline;gap:12px;font-size:13px;color:#A9A099;
  padding:11px 0;border-bottom:1px dashed rgba(255,255,255,.16)}
.edu-list li:last-child{border-bottom:0}
.edu-list b{font-weight:500;font-size:13.5px;color:#EDE7E0;min-width:9.5em}
@media(max-width:820px){.edu{grid-template-columns:1fr;gap:22px}}

/* ── 代表メッセージ ─────────────────────── */
.message{position:relative;overflow:hidden;border-top:1px solid rgba(255,255,255,.1)}
.message::before{content:"";position:absolute;inset:auto -10% -30% -10%;height:80%;
  background:radial-gradient(46% 60% at 22% 70%,rgba(255,122,24,.13),transparent 72%);pointer-events:none}
.msg-in{position:relative;display:grid;grid-template-columns:.86fr 1.14fr;gap:clamp(30px,5vw,76px);align-items:start}
.msg-side{position:sticky;top:96px}
.msg-side h2{font-size:clamp(24px,3.4vw,34px);line-height:1.55}
.msg-photo{width:100%;margin-top:28px;border:1px solid rgba(255,255,255,.14);filter:contrast(1.05) saturate(.92)}
.sign{margin-top:34px;padding-top:22px;border-top:1px solid rgba(255,255,255,.16);position:relative}
.sign::before{content:"";position:absolute;top:-1px;left:0;width:64px;height:1px;background:var(--shakunetsu)}
.sign span{display:block;font-size:12px;letter-spacing:.14em;color:var(--hai)}
.sign b{display:block;font-family:var(--disp);font-weight:800;font-size:clamp(21px,2.6vw,26px);
  letter-spacing:.16em;color:#fff;margin-top:8px}
.msg-body p{margin:0 0 24px;font-size:15px;line-height:2.1;color:#BCB4AD}
.msg-lead{font-family:var(--disp);font-weight:600;font-size:clamp(17px,2.1vw,21px)!important;
  line-height:2!important;color:#F0EAE3!important;padding-left:20px;border-left:2px solid var(--shakunetsu)}
.msg-close{color:#E4DDD6!important;font-weight:500;margin-bottom:0!important}
@media(max-width:860px){
  .msg-in{grid-template-columns:1fr;gap:32px}
  .msg-side{position:static}
}

/* ── 採用 ───────────────────────────── */
.jobs{display:grid;grid-template-columns:1fr 1fr;gap:22px;margin-top:44px}
@media(max-width:820px){.jobs{grid-template-columns:1fr}}
.job{border:1px solid rgba(255,255,255,.14);padding:30px clamp(20px,3vw,32px);background:
  linear-gradient(180deg,rgba(255,122,24,.07),transparent 55%)}
.job .k{font-family:var(--num);font-weight:300;font-size:11.5px;letter-spacing:.3em;color:var(--shakunetsu)}
.job h3{font-family:var(--disp);font-weight:800;font-size:clamp(21px,3vw,27px);margin:12px 0 16px;color:#fff;letter-spacing:.04em}
.job dl{display:grid;grid-template-columns:5.5em 1fr;gap:10px 14px;margin:0 0 24px;font-size:13.5px}
.job dt{color:var(--hai);letter-spacing:.08em}
.job dd{margin:0;color:#DCD5CE}
.job dd strong{color:#fff}
.btn{display:inline-flex;align-items:center;gap:10px;text-decoration:none;font-size:13.5px;font-weight:700;
  letter-spacing:.08em;padding:13px 22px;background:var(--shakunetsu);color:#1A0F06;border-radius:2px;transition:.2s}
.btn:hover,.btn:focus-visible{background:var(--hakunetsu);transform:translateY(-1px)}
.btn.ghost{background:transparent;color:#EDE7E0;border:1px solid rgba(255,255,255,.28)}
.btn.ghost:hover{border-color:var(--shakunetsu);color:#fff;background:rgba(255,122,24,.1)}
.flow{margin-top:44px;border-top:1px solid rgba(255,255,255,.14);padding-top:26px}
.flow-label{font-family:var(--num);font-weight:300;font-size:12px;letter-spacing:.28em;color:var(--hai);margin:0 0 20px}
.flow-in{display:flex;flex-wrap:wrap;gap:14px;align-items:stretch}
.flow-in>i{font-style:normal;color:var(--shakunetsu);align-self:center;font-size:15px}
.fstep{border:1px solid rgba(255,255,255,.2);padding:16px 22px;display:flex;flex-direction:column;justify-content:center;min-width:130px}
.fstep>b{font-weight:500;font-size:14.5px;color:#EDE7E0;letter-spacing:.04em}
.fstep.pick{flex:1;min-width:320px;border-color:rgba(255,122,24,.45);
  background:linear-gradient(180deg,rgba(255,122,24,.09),transparent 70%);padding:20px 24px}
.pick-note{margin:8px 0 14px;font-size:12.5px;color:#A9A099;line-height:1.7}
.picks{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.picks span{display:flex;align-items:center;gap:10px;font-size:13.5px;color:#E4DDD6;
  border:1px solid rgba(255,255,255,.18);background:rgba(255,255,255,.04);padding:11px 14px}
.picks em{font-style:normal;font-family:var(--num);font-weight:500;font-size:13px;color:#1A0F06;
  background:var(--shakunetsu);width:22px;height:22px;display:grid;place-items:center;flex:none}
.picks small{font-size:11.5px;color:var(--hai);margin-left:auto;white-space:nowrap;letter-spacing:.06em}
.flow-note{margin:20px 0 0;font-size:13px;color:var(--hai)}
@media(max-width:720px){
  .flow-in{flex-direction:column;gap:10px}
  .flow-in>i{transform:rotate(90deg);align-self:flex-start;margin-left:24px}
  .fstep.pick{min-width:0}
  .picks{grid-template-columns:1fr}
}

/* ── 企業様向けCTAバンド ─────────────────── */
.band{border-top:1px solid rgba(255,255,255,.1);border-bottom:1px solid rgba(255,255,255,.1);
  background:linear-gradient(180deg,rgba(255,122,24,.08),transparent 70%);padding:clamp(44px,6vw,72px) 0}
.band-in{display:grid;grid-template-columns:1.15fr .85fr;gap:clamp(24px,4vw,56px);align-items:center}
.band-act{display:flex;flex-direction:column;gap:12px;align-items:flex-start}
@media(max-width:820px){.band-in{grid-template-columns:1fr}}

/* ── 会社概要 ───────────────────────── */
.info{margin-top:44px;border-top:1px solid #D6D1C8}
.info tr{border-bottom:1px solid #D6D1C8}
.info th{text-align:left;width:190px;padding:16px 0;font-weight:500;font-size:13px;letter-spacing:.1em;color:#7A716A;vertical-align:top}
.info td{padding:16px 0;font-size:14.5px;color:#332D29;vertical-align:top}
@media(max-width:640px){.info th{display:block;width:auto;padding-bottom:2px}.info td{display:block;padding-top:0}}

/* ── フッター ───────────────────────── */
.ft{background:var(--kurogane);padding:clamp(48px,7vw,80px) 0 34px}
.ft-in{display:flex;flex-wrap:wrap;gap:32px;justify-content:space-between;align-items:flex-start}
.ft address{font-style:normal;font-size:14px;color:#B4ABA4;line-height:2}
.ft .tel{font-family:var(--num);font-weight:300;font-size:30px;color:#fff;letter-spacing:.06em;display:block}
.ft nav{display:grid;gap:10px;font-size:13.5px}
.ft nav a{text-decoration:none;color:#B4ABA4}
.ft nav a:hover{color:var(--shakunetsu)}
.copy{margin-top:46px;padding-top:20px;border-top:1px solid rgba(255,255,255,.1);
  font-family:var(--num);font-weight:300;font-size:11px;letter-spacing:.2em;color:#6C635C}

:focus-visible{outline:2px solid var(--hakunetsu);outline-offset:3px}
@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important;scroll-behavior:auto}}