/* =========================================================
   有限会社浜野鉄工所 提案デモサイト 共通スタイル
   ========================================================= */
:root {
  --ink: #1d242e;
  --muted: #5b6572;
  --steel: #141a23;
  --steel-2: #1e2836;
  --steel-line: #2a3442;
  --accent: #e8791d;
  --accent-deep: #c76310;
  --bg: #f4f5f7;
  --paper: #ffffff;
  --line: #dde1e7;
  --maxw: 1080px;
  --s1: 4px; --s2: 8px; --s3: 12px; --s4: 16px; --s5: 20px;
  --s6: 24px; --s8: 32px; --s10: 40px; --s12: 48px; --s16: 64px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: "Noto Sans JP", "Hiragino Kaku Gothic ProN", sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.85;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
.en {
  font-family: "Oswald", "Noto Sans JP", sans-serif;
  letter-spacing: .32em;
  text-transform: uppercase;
}

/* ---------- header ---------- */
.header {
  position: sticky; top: 0; z-index: 100;
  background: var(--steel);
  color: #eef1f5;
  border-bottom: 3px solid var(--accent);
}
.header-inner {
  max-width: var(--maxw); margin: 0 auto;
  display: flex; align-items: center; justify-content: space-between;
  padding: var(--s3) var(--s4);
  gap: var(--s4);
}
.brand { display: flex; flex-direction: column; line-height: 1.3; }
.brand b { font-size: 1.06rem; font-weight: 700; letter-spacing: .08em; white-space: nowrap; }
.brand small {
  font-family: "Oswald", sans-serif; font-size: .58rem; letter-spacing: .3em;
  color: #93a0b0; text-transform: uppercase; margin-top: 2px;
}
.gnav ul { display: flex; gap: var(--s6); align-items: center; }
.gnav a {
  font-size: .88rem; font-weight: 500; letter-spacing: .1em;
  padding: var(--s2) 0; position: relative; color: #d4dae2;
}
.gnav a::after {
  content: ""; position: absolute; left: 0; right: 100%; bottom: 0;
  height: 2px; background: var(--accent); transition: right .25s;
}
.gnav a:hover::after, .gnav a[aria-current="page"]::after { right: 0; }
.gnav a[aria-current="page"] { color: #fff; }
.gnav .nav-cta a {
  background: var(--accent); color: #fff; padding: var(--s2) var(--s5);
  font-weight: 700; transition: background .2s;
}
.gnav .nav-cta a:hover { background: var(--accent-deep); }
.gnav .nav-cta a::after { display: none; }

.nav-toggle {
  display: none; background: none; border: 0; cursor: pointer;
  width: 44px; height: 44px; position: relative;
}
.nav-toggle span {
  display: block; width: 24px; height: 2px; background: #eef1f5;
  margin: 5px auto; transition: transform .25s, opacity .25s;
}
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

@media (max-width: 820px) {
  .nav-toggle { display: block; }
  .gnav {
    position: absolute; top: 100%; left: 0; right: 0;
    background: var(--steel-2); display: none;
    border-bottom: 3px solid var(--accent);
  }
  .gnav.open { display: block; }
  .gnav ul { flex-direction: column; gap: 0; align-items: stretch; padding: var(--s4); }
  .gnav a { display: block; padding: var(--s3) var(--s2); font-size: 1rem; }
  .gnav .nav-cta a { text-align: center; margin-top: var(--s3); }
}

/* ---------- hero(トップ) ---------- */
.hero {
  position: relative; overflow: hidden; background: var(--steel);
  color: #fff;
}
.hero img.bg {
  width: 100%; height: min(82vh, 620px); object-fit: cover; opacity: .5;
}
.hero-copy {
  position: absolute; inset: 0;
  display: flex; flex-direction: column; justify-content: center;
  max-width: var(--maxw); margin: 0 auto; padding: var(--s6) var(--s5);
  width: 100%; left: 0; right: 0;
}
.hero-copy .kicker {
  color: var(--accent); font-size: .78rem; font-weight: 500; margin-bottom: var(--s4);
}
.hero-copy h1 {
  font-size: clamp(1.7rem, 5.2vw, 3rem); font-weight: 900;
  letter-spacing: .12em; line-height: 1.5;
  text-shadow: 0 2px 18px rgba(0,0,0,.55);
}
.hero-copy .lead {
  margin-top: var(--s5); font-size: clamp(.92rem, 2vw, 1.05rem);
  letter-spacing: .08em; color: #e8ecf1; text-shadow: 0 1px 10px rgba(0,0,0,.6);
  max-width: 34em;
}
.hero-copy .hero-actions { margin-top: var(--s8); display: flex; gap: var(--s4); flex-wrap: wrap; }

/* ---------- 下層ページヘッダ ---------- */
.page-hero { position: relative; overflow: hidden; background: var(--steel); color: #fff; }
.page-hero img { width: 100%; height: 260px; object-fit: cover; opacity: .38; }
.page-hero .ttl {
  position: absolute; inset: 0; display: flex; flex-direction: column;
  justify-content: center; max-width: var(--maxw); margin: 0 auto;
  padding: 0 var(--s5); width: 100%;
}
.page-hero .en { color: var(--accent); font-size: .72rem; }
.page-hero h1 { font-size: clamp(1.4rem, 3.6vw, 2rem); letter-spacing: .18em; font-weight: 700; margin-top: var(--s2); }

/* ---------- 数字ストリップ ---------- */
.stat-strip { background: var(--steel-2); color: #fff; padding: var(--s6) var(--s4); }
.stat-strip ul {
  max-width: var(--maxw); margin: 0 auto; display: grid; gap: var(--s5);
  grid-template-columns: repeat(2, 1fr); text-align: center;
}
@media (min-width: 720px) { .stat-strip ul { grid-template-columns: repeat(4, 1fr); } }
.stat-strip .num {
  display: block; font-family: "Oswald", sans-serif; font-size: 1.7rem;
  color: var(--accent); letter-spacing: .06em; line-height: 1.2;
}
.stat-strip .num small { font-size: .85rem; letter-spacing: .1em; }
.stat-strip .label { font-size: .76rem; letter-spacing: .14em; color: #aeb8c4; }

/* ---------- セクション共通 ---------- */
section { padding: var(--s16) var(--s5); }
.section-inner { max-width: var(--maxw); margin: 0 auto; }
.alt-bg { background: var(--paper); }
.dark-bg { background: var(--steel); color: #e8ecf1; }
.sec-head { margin-bottom: var(--s10); }
.sec-head .en { display: block; color: var(--accent); font-size: .72rem; margin-bottom: var(--s2); }
.sec-head h2 {
  font-size: clamp(1.3rem, 3.2vw, 1.7rem); font-weight: 700; letter-spacing: .14em;
  border-left: 5px solid var(--accent); padding-left: var(--s4); line-height: 1.4;
}
.sec-head .sec-lead { margin-top: var(--s4); color: var(--muted); font-size: .95rem; }
.dark-bg .sec-head .sec-lead { color: #aeb8c4; }

/* ---------- 強みカード ---------- */
.strength-grid { display: grid; gap: var(--s6); }
@media (min-width: 860px) { .strength-grid { grid-template-columns: repeat(3, 1fr); } }
.strength {
  background: var(--paper); border-top: 4px solid var(--accent);
  padding: var(--s8) var(--s6); box-shadow: 0 2px 14px rgba(20,26,35,.07);
}
.alt-bg .strength { background: var(--bg); box-shadow: none; border: 1px solid var(--line); border-top: 4px solid var(--accent); }
.strength .no { font-family: "Oswald", sans-serif; font-size: 1.9rem; color: #c9cfd8; letter-spacing: .08em; line-height: 1; }
.strength h3 { font-size: 1.08rem; font-weight: 700; letter-spacing: .1em; margin-top: var(--s3); }
.strength p { font-size: .92rem; color: var(--muted); margin-top: var(--s3); }
.strength .spec {
  margin-top: var(--s4); padding-top: var(--s4); border-top: 1px dashed var(--line);
  font-size: .82rem; color: var(--ink); letter-spacing: .04em;
}

/* ---------- 画像＋テキスト ---------- */
.media-grid { display: grid; gap: var(--s8); align-items: center; }
@media (min-width: 900px) {
  .media-grid { grid-template-columns: 1fr 1fr; gap: var(--s12); }
  .media-grid.rev .media-img { order: 2; }
}
.media-img { position: relative; }
.media-img img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; }
.media-img::after {
  content: ""; position: absolute; right: -10px; bottom: -10px;
  width: 42%; height: 42%; border: 3px solid var(--accent); z-index: -1;
}
.media-body h3 { font-size: 1.2rem; font-weight: 700; letter-spacing: .12em; line-height: 1.6; }
.media-body p { margin-top: var(--s4); font-size: .95rem; color: var(--muted); }
.dark-bg .media-body p { color: #b9c2cd; }

/* ---------- 製品カード ---------- */
.product-grid { display: grid; gap: var(--s6); }
@media (min-width: 720px) { .product-grid { grid-template-columns: repeat(2, 1fr); } }
.product-card { background: var(--paper); box-shadow: 0 2px 14px rgba(20,26,35,.07); }
.product-card img { width: 100%; aspect-ratio: 16 / 10; object-fit: cover; }
.product-card .body { padding: var(--s6); }
.product-card .tag {
  display: inline-block; background: var(--steel-2); color: #fff;
  font-size: .68rem; letter-spacing: .18em; padding: 3px 10px; margin-bottom: var(--s3);
}
.product-card h3 { font-size: 1.1rem; font-weight: 700; letter-spacing: .08em; }
.product-card p { font-size: .9rem; color: var(--muted); margin-top: var(--s3); }

/* ---------- 設備テーブル ---------- */
.equip-table-wrap { overflow-x: auto; }
.equip-table { width: 100%; border-collapse: collapse; background: var(--paper); font-size: .92rem; min-width: 560px; }
.equip-table th, .equip-table td { border: 1px solid var(--line); padding: var(--s3) var(--s4); text-align: left; }
.equip-table thead th {
  background: var(--steel-2); color: #fff; font-weight: 500;
  letter-spacing: .12em; font-size: .82rem;
}
.equip-table td.qty { text-align: right; font-family: "Oswald", sans-serif; font-size: 1rem; white-space: nowrap; }
.equip-table .cat {
  background: #eef0f3; font-weight: 700; letter-spacing: .1em; font-size: .85rem;
}

/* ---------- 加工フロー ---------- */
.flow-grid { display: grid; gap: var(--s6); counter-reset: flow; }
@media (min-width: 860px) { .flow-grid { grid-template-columns: repeat(4, 1fr); } }
.flow-step { background: var(--paper); border: 1px solid var(--line); position: relative; }
.flow-step img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; }
.flow-step .body { padding: var(--s4) var(--s5) var(--s6); }
.flow-step .body::before {
  counter-increment: flow; content: "0" counter(flow);
  font-family: "Oswald", sans-serif; font-size: 1.5rem; color: var(--accent);
  display: block; line-height: 1; margin-bottom: var(--s2);
}
.flow-step h3 { font-size: 1rem; font-weight: 700; letter-spacing: .1em; }
.flow-step h3 small { display: block; font-size: .72rem; color: var(--muted); font-weight: 400; margin-top: 2px; }
.flow-step p { font-size: .85rem; color: var(--muted); margin-top: var(--s2); }

/* ---------- 会社概要テーブル ---------- */
.about-table { width: 100%; border-collapse: collapse; background: var(--paper); font-size: .95rem; }
.about-table th, .about-table td { border: 1px solid var(--line); padding: var(--s4) var(--s5); text-align: left; vertical-align: top; }
.about-table th { width: 9em; background: #eef0f3; font-weight: 700; letter-spacing: .08em; white-space: nowrap; }
@media (max-width: 560px) {
  .about-table th, .about-table td { display: block; width: auto; border: 0; padding: var(--s2) var(--s3); }
  .about-table th { background: #eef0f3; }
  .about-table tr { display: block; border: 1px solid var(--line); border-bottom: 0; }
  .about-table tr:last-child { border-bottom: 1px solid var(--line); }
}

/* ---------- ボタン ---------- */
.btn {
  display: inline-block; padding: var(--s3) var(--s8);
  font-size: .92rem; font-weight: 700; letter-spacing: .14em;
  border: 2px solid transparent; cursor: pointer; transition: .2s;
  text-align: center;
}
.btn-accent { background: var(--accent); color: #fff; }
.btn-accent:hover { background: var(--accent-deep); }
.btn-ghost { border-color: #fff; color: #fff; background: transparent; }
.btn-ghost:hover { background: rgba(255,255,255,.14); }
.btn-line { border-color: var(--steel); color: var(--steel); background: transparent; }
.btn-line:hover { background: var(--steel); color: #fff; }

/* ---------- CTAバンド ---------- */
.cta-band { position: relative; overflow: hidden; background: var(--steel); padding: 0; }
.cta-band > img { width: 100%; height: 340px; object-fit: cover; opacity: .3; }
.cta-copy {
  position: absolute; inset: 0; display: flex; flex-direction: column;
  align-items: center; justify-content: center; text-align: center;
  color: #fff; padding: var(--s5);
}
.cta-copy .en { color: var(--accent); font-size: .72rem; }
.cta-copy h2 { font-size: clamp(1.2rem, 3vw, 1.6rem); letter-spacing: .16em; margin-top: var(--s3); font-weight: 700; }
.cta-copy p { margin-top: var(--s3); font-size: .92rem; color: #ccd3dc; max-width: 34em; }
.cta-copy .tel {
  font-family: "Oswald", sans-serif; font-size: 1.9rem; letter-spacing: .08em;
  color: #fff; margin-top: var(--s4); line-height: 1.2;
}
.cta-copy .tel small { font-size: .8rem; letter-spacing: .14em; display: block; color: #aeb8c4; font-family: "Noto Sans JP", sans-serif; }
.cta-copy .cta-actions { margin-top: var(--s5); display: flex; gap: var(--s4); flex-wrap: wrap; justify-content: center; }

/* ---------- フォーム ---------- */
.form-grid { display: grid; gap: var(--s5); max-width: 720px; }
.form-grid label { font-size: .88rem; font-weight: 700; letter-spacing: .08em; display: block; margin-bottom: var(--s2); }
.form-grid label .req {
  background: var(--accent); color: #fff; font-size: .66rem; letter-spacing: .1em;
  padding: 2px 8px; margin-left: var(--s2); vertical-align: 2px;
}
.form-grid input, .form-grid select, .form-grid textarea {
  width: 100%; padding: var(--s3) var(--s4); border: 1px solid #b9c1cb;
  font: inherit; background: #fff; color: var(--ink);
}
.form-grid input:focus, .form-grid select:focus, .form-grid textarea:focus {
  outline: 2px solid var(--accent); outline-offset: 1px; border-color: var(--accent);
}
.form-note { font-size: .82rem; color: var(--muted); }

/* ---------- 連絡先カード ---------- */
.contact-cards { display: grid; gap: var(--s5); }
@media (min-width: 820px) { .contact-cards { grid-template-columns: repeat(3, 1fr); } }
.contact-card { background: var(--paper); border: 1px solid var(--line); border-top: 4px solid var(--accent); padding: var(--s6); text-align: center; }
.contact-card .en { display: block; font-size: .66rem; color: var(--muted); margin-bottom: var(--s2); }
.contact-card .big { font-family: "Oswald", sans-serif; font-size: 1.5rem; letter-spacing: .06em; line-height: 1.3; }
.contact-card .big a:hover { color: var(--accent); }
.contact-card p { font-size: .82rem; color: var(--muted); margin-top: var(--s2); }

/* ---------- footer ---------- */
.footer { background: var(--steel); color: #b9c2cd; font-size: .85rem; }
.footer-inner {
  max-width: var(--maxw); margin: 0 auto; padding: var(--s12) var(--s5) var(--s8);
  display: grid; gap: var(--s8);
}
@media (min-width: 820px) { .footer-inner { grid-template-columns: 1.3fr 1fr; } }
.footer .f-brand b { color: #fff; font-size: 1.05rem; letter-spacing: .1em; display: block; }
.footer .f-brand small { font-family: "Oswald", sans-serif; letter-spacing: .3em; font-size: .6rem; color: #93a0b0; text-transform: uppercase; }
.footer address { font-style: normal; margin-top: var(--s4); line-height: 2; }
.footer .f-nav ul { display: flex; flex-wrap: wrap; gap: var(--s4) var(--s6); }
.footer .f-nav a:hover { color: #fff; }
.footer .f-member { margin-top: var(--s5); font-size: .78rem; color: #8894a2; }
.footer .copyright {
  border-top: 1px solid #2a3442; text-align: center; padding: var(--s4);
  font-size: .74rem; color: #8894a2; letter-spacing: .1em;
}
.footer .demo-note { color: #6d7987; font-size: .7rem; display: block; margin-top: var(--s1); }