@charset "UTF-8";
/* ============================================================
   FAB株式会社 コーポレートサイト 共通スタイル
   配色は会社案内（2026-10-23版）の実配色に準拠
   ============================================================ */

:root {
  --navy:       #202f55;  /* コーポレートカラー（紺瑠璃） */
  --navy-deep:  #16223f;
  --navy-mid:   #2b3c68;
  --ink:        #1f2633;
  --muted:      #8a93a6;
  --line:       #d5dbe6;
  --paper:      #f3f5f9;
  --soft:       #e8ecf4;
  --gold:       #e0a23b;  /* アクセント */
  --on-navy:    #c3cde4;
  --on-navy-dim:#9aa8ca;
  --white:      #ffffff;

  --font-body:   "Noto Sans JP", "Hiragino Kaku Gothic ProN", "Meiryo", sans-serif;
  --font-display:"Zen Kaku Gothic New", "Noto Sans JP", sans-serif;
  --font-en:     "Manrope", "Helvetica Neue", Arial, sans-serif;

  --w:      1120px;
  --radius: 3px;
}

*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.95;
  letter-spacing: .02em;
  color: var(--ink);
  background: var(--white);
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--navy); text-decoration: none; transition: color .2s ease, opacity .2s ease; }
a:hover { color: var(--gold); }
p { margin: 0 0 1.3em; }
h1, h2, h3, h4 { font-family: var(--font-display); line-height: 1.55; margin: 0 0 .7em; color: var(--navy); font-weight: 700; }
:focus-visible { outline: 2px solid var(--gold); outline-offset: 3px; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
}

.container { max-width: var(--w); margin: 0 auto; padding: 0 24px; }
.u-narrow  { max-width: 780px; }

/* ============================================================
   ヘッダー
   ============================================================ */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255,255,255,.97);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.site-header__inner {
  max-width: var(--w); margin: 0 auto; padding: 13px 24px;
  display: flex; align-items: center; justify-content: space-between; gap: 20px;
}
.brand { display: flex; align-items: baseline; gap: 11px; }
.brand:hover { color: inherit; }
.brand__mark {
  font-family: var(--font-en); font-weight: 800; font-size: 27px;
  letter-spacing: .13em; color: var(--navy); line-height: 1;
}
.brand__mark em { font-style: normal; color: var(--gold); }
.brand__name { font-size: 11.5px; color: var(--muted); letter-spacing: .1em; white-space: nowrap; }

.gnav__list { list-style: none; display: flex; align-items: center; gap: 2px; margin: 0; padding: 0; }
.gnav__link {
  display: block; padding: 11px 15px; color: var(--ink);
  font-size: 14.5px; font-weight: 500; letter-spacing: .05em;
  border-bottom: 2px solid transparent;
}
.gnav__link:hover { color: var(--navy); border-bottom-color: var(--gold); }
.gnav__link.is-active { color: var(--navy); border-bottom-color: var(--gold); }
.gnav__cta {
  background: var(--navy); color: var(--white); border-radius: var(--radius);
  padding: 11px 24px; margin-left: 12px; font-size: 14.5px; font-weight: 700; letter-spacing: .06em;
  border-bottom: 0;
}
.gnav__cta:hover { background: var(--navy-mid); color: var(--white); border-bottom-color: transparent; }

.navbtn { display: none; background: none; border: 0; padding: 10px; cursor: pointer; }
.navbtn span { display: block; width: 25px; height: 2px; background: var(--navy); margin: 6px 0; transition: transform .25s, opacity .25s; }
.is-navopen .navbtn span:nth-child(1) { transform: translateY(8px) rotate(45deg); }
.is-navopen .navbtn span:nth-child(2) { opacity: 0; }
.is-navopen .navbtn span:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }

@media (max-width: 940px) {
  .navbtn { display: block; }
  .gnav {
    position: fixed; left: 0; right: 0; top: 60px;
    background: var(--white); border-bottom: 1px solid var(--line);
    opacity: 0; visibility: hidden; transform: translateY(-10px);
    transition: opacity .25s, transform .25s, visibility .25s;
  }
  .is-navopen .gnav { opacity: 1; visibility: visible; transform: none; }
  .gnav__list { flex-direction: column; align-items: stretch; gap: 0; padding: 6px 0 16px; }
  .gnav__link { padding: 14px 26px; border-bottom: 0; }
  .gnav__cta { margin: 10px 24px 0; text-align: center; }
}

/* ============================================================
   ヒーロー（設計図面モチーフ）
   ============================================================ */
.hero { position: relative; overflow: hidden; background: var(--navy); color: var(--white); }
.hero::before {
  content: ""; position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,.14) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.14) 1px, transparent 1px);
  background-size: 68px 68px;
  mask-image: radial-gradient(125% 105% at 72% 12%, #000 28%, transparent 86%);
}
.hero::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(168deg, rgba(22,34,63,.55) 0%, rgba(32,47,85,0) 58%);
}
.hero__inner { position: relative; z-index: 1; max-width: var(--w); margin: 0 auto; padding: 108px 24px 118px; }
.hero__eyebrow {
  font-family: var(--font-en); font-size: 12.5px; font-weight: 700;
  letter-spacing: .36em; color: var(--gold); margin: 0 0 24px;
}
.hero__title {
  color: var(--white); font-size: clamp(32px, 5.2vw, 58px); letter-spacing: .07em;
  line-height: 1.45; margin: 0 0 28px;
}
.hero__lead { max-width: 660px; color: var(--on-navy); font-size: 15.5px; margin: 0; }
.hero__actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 38px; }

.hero__mark { position: absolute; width: 24px; height: 24px; opacity: .55; pointer-events: none; }
.hero__mark::before, .hero__mark::after { content: ""; position: absolute; background: var(--on-navy-dim); }
.hero__mark::before { left: 50%; top: 0; width: 1px; height: 100%; }
.hero__mark::after  { top: 50%; left: 0; height: 1px; width: 100%; }
.hero__mark--a { top: 38px; right: 52px; }
.hero__mark--b { bottom: 54px; left: 40px; }

@media (max-width: 760px) {
  .hero__inner { padding: 78px 24px 86px; }
}

/* ============================================================
   ボタン
   ============================================================ */
.btn {
  display: inline-block; padding: 14px 32px; border-radius: var(--radius);
  font-size: 14.5px; font-weight: 700; letter-spacing: .1em; text-align: center;
  border: 1px solid transparent; cursor: pointer; font-family: var(--font-body);
}
.btn--light { background: var(--white); color: var(--navy); }
.btn--light:hover { background: var(--soft); color: var(--navy); }
.btn--outline { border-color: rgba(255,255,255,.5); color: var(--white); }
.btn--outline:hover { border-color: var(--gold); color: var(--gold); }
.btn--navy { background: var(--navy); color: var(--white); }
.btn--navy:hover { background: var(--navy-mid); color: var(--white); }
/* 準備中のボタン（リンクなし） */
.btn--muted {
  background: rgba(255,255,255,.1); color: var(--on-navy-dim);
  border-color: rgba(255,255,255,.22); cursor: default;
}

/* ============================================================
   セクション共通
   ============================================================ */
.section { padding: 96px 0; }
.section--paper { background: var(--paper); }
.section--navy  { background: var(--navy); color: var(--on-navy); }
.section--navy h2, .section--navy h3 { color: var(--white); }

.shead { margin: 0 0 52px; }
.shead__en {
  display: block; font-family: var(--font-en); font-size: 12px; font-weight: 700;
  letter-spacing: .3em; color: var(--gold); margin-bottom: 10px;
}
.shead__ja { font-size: clamp(23px, 2.9vw, 31px); letter-spacing: .1em; margin: 0; }
.shead__rule { position: relative; width: 72px; height: 9px; margin-top: 18px; }
.shead__rule::before { content: ""; position: absolute; left: 0; right: 0; top: 50%; height: 1px; background: var(--gold); }
.shead__rule::after  { content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 72px; border-left: 1px solid var(--gold); border-right: 1px solid var(--gold); }

.lead { font-size: 16px; max-width: 800px; }
.section--navy .lead { color: var(--on-navy); }

/* ============================================================
   経営理念（3つのFAB）
   ============================================================ */
.fab-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.fab-card {
  background: var(--white); border: 1px solid var(--line); border-top: 3px solid var(--navy);
  border-radius: var(--radius); padding: 32px 28px;
}
.fab-card__label { font-size: 12.5px; font-weight: 700; color: var(--muted); letter-spacing: .22em; margin: 0 0 10px; }
.fab-card__en {
  font-family: var(--font-en); font-weight: 800; font-size: 20px; line-height: 1.4;
  color: var(--navy); letter-spacing: .02em; margin: 0 0 6px;
}
.fab-card__en b { color: var(--gold); font-weight: 800; }
.fab-card__role { font-family: var(--font-en); font-size: 11.5px; font-weight: 700; letter-spacing: .26em; color: var(--muted); margin: 0 0 18px; }
.fab-card__body { font-size: 14.5px; margin: 0; }
.fab-note { margin: 26px 0 0; font-size: 13px; color: var(--muted); }

@media (max-width: 900px) { .fab-grid { grid-template-columns: 1fr; } }

/* ============================================================
   事業の柱
   ============================================================ */
.biz-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.biz-grid--wide { grid-template-columns: repeat(2, 1fr); gap: 26px; }
.biz-card {
  background: var(--white); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 30px 26px; display: flex; flex-direction: column;
}
.biz-card__icon { width: 34px; height: 34px; color: var(--navy); margin-bottom: 18px; }
.biz-card__tag {
  align-self: flex-start; font-size: 11px; font-weight: 700; letter-spacing: .14em;
  padding: 2px 10px; border-radius: 2px; margin-bottom: 12px;
  background: var(--navy); color: var(--white);
}
.biz-card__tag--soon { background: transparent; color: var(--gold); border: 1px solid var(--gold); }
.biz-card__title { font-size: 17.5px; letter-spacing: .05em; margin: 0 0 12px; }
.biz-card__body { font-size: 14.5px; margin: 0; }
.biz-card__list { font-size: 14px; margin: 16px 0 0; padding-left: 1.25em; }
.biz-card__list li { margin-bottom: 5px; }

@media (max-width: 1000px) { .biz-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 680px)  { .biz-grid, .biz-grid--wide { grid-template-columns: 1fr; } }

/* ============================================================
   代表挨拶
   ============================================================ */
.msg-slogan {
  border-left: 3px solid var(--gold); padding: 4px 0 4px 24px; margin: 0 0 40px;
}
.msg-slogan__en { font-family: var(--font-en); font-size: 21px; font-weight: 800; color: var(--navy); letter-spacing: .03em; margin: 0 0 2px; }
.msg-slogan__ja { font-size: 17px; color: var(--ink); letter-spacing: .14em; margin: 0; font-family: var(--font-display); }

.msg-block { margin-top: 52px; }
.msg-block__head { display: flex; align-items: baseline; gap: 16px; flex-wrap: wrap; margin-bottom: 8px; }
.msg-block__label { font-size: 13px; font-weight: 700; letter-spacing: .22em; color: var(--muted); }
.msg-block__en { font-family: var(--font-en); font-size: 19px; font-weight: 800; color: var(--navy); letter-spacing: .02em; }
.msg-block__en b { color: var(--gold); font-weight: 800; }
.msg-block__role { font-family: var(--font-en); font-size: 11.5px; font-weight: 700; letter-spacing: .24em; color: var(--muted); }
.msg-block__body { margin: 14px 0 0; }

.msg-closing {
  background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 30px 32px; margin-top: 56px;
}
.msg-closing__quote { font-family: var(--font-display); font-size: 18px; color: var(--navy); letter-spacing: .06em; margin: 0 0 12px; }
.msg-closing__text { margin: 0; font-size: 15px; }

.msg-sign { margin-top: 40px; text-align: right; }
.msg-sign__org { font-size: 13.5px; color: var(--muted); margin: 0 0 4px; }
.msg-sign__name { font-family: var(--font-display); font-size: 21px; color: var(--navy); letter-spacing: .14em; margin: 0; }

/* ============================================================
   お知らせ
   ============================================================ */
.news { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--line); }
.news__item { border-bottom: 1px solid var(--line); }
.news__link { display: flex; gap: 26px; align-items: baseline; padding: 19px 8px; color: var(--ink); }
.news__link:hover { background: var(--white); color: var(--navy); }
.section--paper .news__link:hover { background: var(--white); }
.news__date { font-family: var(--font-en); font-size: 13.5px; font-weight: 600; color: var(--muted); letter-spacing: .05em; flex-shrink: 0; }
.news__cat { flex-shrink: 0; font-size: 11.5px; color: var(--navy); border: 1px solid var(--navy); border-radius: 2px; padding: 1px 10px; letter-spacing: .08em; }
.news__title { font-size: 15px; }
.news__empty { color: var(--muted); }

.more { margin-top: 28px; text-align: right; }
.more__link { font-size: 14px; font-weight: 700; letter-spacing: .1em; }
.more__link::after { content: " →"; color: var(--gold); }

@media (max-width: 640px) { .news__link { flex-wrap: wrap; gap: 8px 14px; } }

/* ============================================================
   会社概要テーブル
   ============================================================ */
.ctable { width: 100%; border-collapse: collapse; background: var(--white); }
.ctable th, .ctable td { border: 1px solid var(--line); padding: 17px 22px; font-size: 15px; text-align: left; vertical-align: top; }
.ctable th { width: 190px; background: var(--paper); color: var(--navy); font-weight: 700; letter-spacing: .08em; white-space: nowrap; }
.ctable small { color: var(--muted); }
.ctable ul, .ctable ol { margin: 0; padding-left: 1.4em; }
.ctable li { margin-bottom: 6px; }
.ctable li:last-child { margin-bottom: 0; }

@media (max-width: 640px) {
  .ctable th, .ctable td { display: block; width: 100%; }
  .ctable th { border-bottom: 0; }
  .ctable tr + tr th { border-top: 0; }
}

/* ============================================================
   下層ページ共通
   ============================================================ */
.phero { position: relative; overflow: hidden; background: var(--navy); color: var(--white); }
.phero::before {
  content: ""; position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,.10) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.10) 1px, transparent 1px);
  background-size: 68px 68px;
  mask-image: radial-gradient(135% 165% at 88% -15%, #000 8%, transparent 72%);
}
.phero__inner { position: relative; z-index: 1; max-width: var(--w); margin: 0 auto; padding: 62px 24px; }
.phero__en { display: block; font-family: var(--font-en); font-size: 12px; font-weight: 700; letter-spacing: .3em; color: var(--gold); margin-bottom: 9px; }
.phero__title { color: var(--white); font-size: clamp(25px, 3.4vw, 35px); letter-spacing: .12em; margin: 0; }

.crumb { font-size: 12.5px; color: var(--muted); padding: 14px 0; }
.crumb a { color: var(--muted); }
.crumb a:hover { color: var(--navy); }
.crumb__sep { margin: 0 8px; color: var(--line); }

/* ============================================================
   CTA
   ============================================================ */
.cta { text-align: center; }
.cta__text { max-width: 620px; margin: 0 auto 30px; color: var(--on-navy); }

/* ============================================================
   お問い合わせフォーム
   ============================================================ */
.contact-info { background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px 26px; font-size: 14.5px; margin: 26px 0 44px; }
.contact-info strong { color: var(--navy); }

.form { max-width: 760px; }
.form__row { margin-bottom: 25px; }
.form__label { display: block; font-weight: 700; font-size: 14.5px; color: var(--navy); margin-bottom: 8px; }
.form__req, .form__opt { display: inline-block; font-size: 11px; font-weight: 700; letter-spacing: .08em; border-radius: 2px; padding: 1px 8px; margin-left: 10px; vertical-align: middle; }
.form__req { background: #a5443c; color: var(--white); }
.form__opt { background: var(--muted); color: var(--white); }
.form__input, .form__select, .form__textarea {
  width: 100%; padding: 13px 14px; font-size: 15px; font-family: var(--font-body);
  border: 1px solid #b9c0cf; border-radius: var(--radius); background: var(--white); color: var(--ink);
}
.form__textarea { min-height: 190px; resize: vertical; }
.form__input:focus, .form__select:focus, .form__textarea:focus {
  border-color: var(--navy); outline: none; box-shadow: 0 0 0 3px rgba(32,47,85,.14);
}
.form__agree { font-size: 14px; margin: 30px 0; }
.form__agree input { margin-right: 8px; }
.form__submit { text-align: center; margin-top: 12px; }
.form__submit .btn { min-width: 260px; }
.form__errors { background: #fbeeee; border: 1px solid #d9a6a1; border-radius: var(--radius); color: #8c3630; padding: 18px 24px; margin-bottom: 32px; font-size: 14.5px; }
.form__errors ul { margin: 0; }
.form__sent { background: #eef4ec; border: 1px solid #a9c8a4; border-radius: var(--radius); color: #33582e; padding: 26px 28px; margin-bottom: 36px; }
.form__hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }

/* ============================================================
   記事
   ============================================================ */
.article { max-width: 820px; }
.article__title { font-size: 25px; }
.article__meta { font-size: 13.5px; color: var(--muted); margin-bottom: 26px; }
.article__meta time { font-family: var(--font-en); font-weight: 600; letter-spacing: .05em; }
.article__body h2 { font-size: 21px; margin-top: 2em; }
.article__body h3 { font-size: 18px; margin-top: 1.8em; }
.article__nav { margin-top: 56px; }

/* ============================================================
   フッター
   ============================================================ */
.site-footer { background: var(--navy-deep); color: var(--on-navy); }
.site-footer a { color: var(--on-navy); }
.site-footer a:hover { color: var(--gold); }
.site-footer__inner { max-width: var(--w); margin: 0 auto; padding: 58px 24px 30px; display: flex; justify-content: space-between; gap: 40px; flex-wrap: wrap; }
.fbrand__mark { font-family: var(--font-en); font-weight: 800; font-size: 24px; letter-spacing: .13em; color: var(--white); }
.fbrand__mark em { font-style: normal; color: var(--gold); }
.fbrand__addr { font-style: normal; font-size: 13.5px; margin-top: 15px; line-height: 1.95; }
.fnav__list { list-style: none; margin: 0; padding: 0; display: flex; gap: 24px; flex-wrap: wrap; }
.fnav__list a { font-size: 13.5px; letter-spacing: .06em; }
.copyright { border-top: 1px solid rgba(255,255,255,.12); text-align: center; font-family: var(--font-en); font-size: 12px; letter-spacing: .1em; padding: 18px 24px; color: #7f8aa6; }

/* ============================================================
   スクロール表示
   ============================================================ */
.reveal { opacity: 0; transform: translateY(16px); transition: opacity .7s ease, transform .7s ease; }
.reveal.is-visible { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { .reveal { opacity: 1; transform: none; } }