:root{--blue:#064b8e;--navy:#063a70;--ink:#111827;--muted:#4b5563;--line:#e5e7eb}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;color:var(--ink);font-family:"Noto Sans JP","Yu Gothic",Meiryo,sans-serif;line-height:1.75;background:#fff}
a{text-decoration:none;color:inherit}
img{display:block;max-width:100%}
.content{width:min(1180px,calc(100% - 64px));margin:auto}

.site-header{height:82px;background:#fff;position:sticky;top:0;z-index:50;box-shadow:0 1px 8px rgba(0,0,0,.08)}
.header-inner{height:100%;width:min(1220px,calc(100% - 48px));margin:auto;display:flex;align-items:center;justify-content:space-between}
.brand{display:flex;align-items:center;gap:10px;color:#073f78;font-weight:800;line-height:1.25}
.brand strong{font-family:Georgia,serif;font-size:42px;letter-spacing:-5px}
.brand span{font-size:18px}
.brand small{display:block;font-size:10px;letter-spacing:.04em}
.nav{display:flex;align-items:center;gap:38px;font-weight:700;font-size:14px}
.instagram-outline{padding:9px 15px;border:3px solid transparent;border-radius:8px;background:linear-gradient(#fff,#fff) padding-box,linear-gradient(120deg,#ff8a00,#e1306c,#833ab4) border-box;color:#d62976}
.instagram-outline span,.instagram-gradient span{font-size:20px}

.hero{height:510px;position:relative;overflow:hidden;color:#fff}
.hero-bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:center 52%}
.hero-shade{position:absolute;inset:0;background:linear-gradient(90deg,rgba(2,10,19,.93) 0%,rgba(2,10,19,.72) 47%,rgba(2,10,19,.12) 77%)}
.hero-content{height:100%;position:relative;display:flex;flex-direction:column;justify-content:center}
.hero h1{font-family:"Yu Mincho","Hiragino Mincho ProN",serif;font-weight:500;font-size:50px;line-height:1.35;letter-spacing:.07em;margin:0 0 20px}
.hero p{font-size:16px;font-weight:600;line-height:2;margin:0 0 28px}
.hero-buttons{display:flex;gap:14px}

.button{display:inline-flex;align-items:center;justify-content:center;gap:7px;padding:14px 28px;font-weight:800;border-radius:3px;transition:.2s}
.button:hover{transform:translateY(-2px);filter:brightness(1.05)}
.button.blue{background:#07599f;color:#fff}
.instagram-gradient{background:linear-gradient(115deg,#ff9a27,#f23278 52%,#8d20c7);color:#fff;border:4px solid #101828;box-shadow:0 0 0 3px #f63c77}

.section{padding:46px 0}
.center-heading{text-align:center;margin-bottom:28px}
.center-heading>b{font-size:14px;color:var(--blue)}
.center-heading h2{font-family:"Yu Mincho","Hiragino Mincho ProN",serif;font-size:34px;font-weight:500;letter-spacing:.06em;margin:2px 0 8px}
.center-heading p{margin:0;color:#343b46}

.strength-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:22px}
.strength-grid article img,
.strength-grid article .strength-video{width:100%;height:142px;object-fit:cover;border-radius:7px;margin-bottom:13px;display:block;background:#000}
.strength-grid article b{color:#102d55;font-family:Georgia,serif;letter-spacing:.03em}
.strength-grid article h3{font-size:13px;line-height:1.8;margin:6px 0;font-weight:600}

.equipment-band{background:linear-gradient(110deg,#064b8e,#083d75);color:#fff;padding:28px 0}
.equipment-layout{display:grid;grid-template-columns:320px 1fr;align-items:center;gap:35px}
.equipment-layout h2{font-family:"Yu Mincho",serif;font-size:31px;margin:0}
.equipment-layout p{font-weight:600;margin:6px 0 17px}
.button.white{background:#fff;color:#254366;padding:12px 34px}
.equipment-photo{height:190px;overflow:hidden}
.equipment-photo img{width:100%;height:100%;object-fit:cover;object-position:center 45%;filter:brightness(.9)}

.fields{padding:35px 0 45px}
.field-icons{display:grid;grid-template-columns:repeat(5,1fr);gap:25px;text-align:center;color:#073f78}
.field-icons span{display:grid;place-items:center;margin:auto auto 8px;width:48px;height:48px;font-size:31px;font-weight:900}
.field-icons b{display:block;color:#111;font-size:14px}

.company{background:#f7f8fa}
.company-grid{display:grid;grid-template-columns:1fr 1.6fr;gap:70px}
.company h2{font-family:"Yu Mincho",serif;font-size:32px;margin:0}
.company dl{margin:0;border-top:1px solid var(--line)}
.company dl div{display:grid;grid-template-columns:130px 1fr;border-bottom:1px solid var(--line);padding:10px}
.company dt{font-weight:800}
.company dd{margin:0}

.contact{background:#102c49;color:#fff}
.contact-inner{display:flex;align-items:center;justify-content:space-between;gap:30px}
.contact h2{font-size:30px;margin:0}
.contact p{margin:5px 0 12px;color:#dbe7f3}
.contact strong{font-size:24px;margin-right:24px}
.contact span{font-size:16px}

footer{background:#081b2d;color:#9fb0c0;padding:18px 0;font-size:12px}

.instagram-showcase{background:#fff}
.instagram-photo-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.instagram-photo-grid img{width:100%;height:240px;object-fit:cover;border-radius:10px;box-shadow:0 8px 24px rgba(0,0,0,.12)}
.instagram-actions{margin-top:24px;text-align:center}
.instagram-actions .button{display:inline-flex}
.instagram-actions small{display:block;margin-top:12px;color:#5d6673;font-size:12px}

/* 旋盤加工の写真だけ全体表示 */
.lathe-photo,
img[alt*="旋盤"]{
  object-fit:contain !important;
  object-position:center center !important;
  background:#fff;
}

/* 設備紹介：機械ごとの青い枠 */
.machine{
  background:#f4f9ff;
  border:2px solid #2f78b7;
  border-radius:12px;
  padding:22px;
  margin-bottom:32px;
  box-shadow:0 4px 14px rgba(6,75,142,.12);
}

/* 機械の写真 */
.machine img{
  width:100%;
  max-width:500px;
  height:auto;
  display:block;
  margin:0;
  border-radius:8px;
}

/* 機械名 */
.machine h2,
.machine h3{
  color:#064b8e;
  margin-top:0;
}

/* 「複雑形状を、高精度に。」の文字を強調 */
.center-heading .strength-catch{
  font-size:36px;
  font-weight:700;
  line-height:1.4;
  color:#064b8e;
  margin:8px 0 12px;
}

.hero {
  position:relative;
  overflow:hidden;
}

.hero .hero-bg {
  position:absolute;
  top:0;
  left:0;
  width:100%;
  height:100%;
  object-fit:cover;
  object-position:center;
}

@media(max-width:850px){
  .content{width:min(100% - 34px,1180px)}
  .site-header{height:68px}
  .header-inner{width:calc(100% - 28px)}
  .brand strong{font-size:34px}
  .brand span{font-size:14px}
  .nav>a:not(.instagram-outline){display:none}
  .instagram-outline{font-size:12px;padding:6px 9px}
  .hero{height:510px}
  .hero-shade{background:rgba(2,10,19,.67)}
  .hero h1{font-size:35px}
  .hero p{font-size:14px}
  .hero p br{display:none}
  .hero-buttons{flex-direction:column;align-items:flex-start}
  .strength-grid{grid-template-columns:1fr 1fr}
  .equipment-layout,.company-grid{grid-template-columns:1fr}
  .equipment-photo{height:220px}
  .field-icons{grid-template-columns:repeat(2,1fr)}
  .contact-inner{display:block}
  .contact .button{margin-top:25px}
  .instagram-photo-grid{grid-template-columns:1fr 1fr}
  .instagram-photo-grid img{height:210px}
}

@media(max-width:520px){
  .strength-grid{grid-template-columns:1fr}
  .strength-grid article .strength-video{height:220px}
  .hero h1{font-size:31px}
  .center-heading h2{font-size:28px}
  .center-heading .strength-catch{font-size:28px}
  .nav{gap:0}
  .field-icons{grid-template-columns:1fr 1fr}
  .company dl div{grid-template-columns:90px 1fr}
  .instagram-photo-grid{grid-template-columns:1fr}
  .instagram-photo-grid img{height:220px}
  .machine{padding:15px;margin-bottom:22px}
}

.video-box{
    width:90%;
    max-width:700px;
    margin:40px auto;
}

.video-box video{
    width:100%;
    height:auto;
    border-radius:12px;
}