/* ================================================================
   安全教育株式会社 LP — style.css
   Container: max-width 1200px / side gutter 24px
   Breakpoint: 768px (PC優先。SP版は別途作り込み予定)
   ================================================================ */

:root{
  /* --- CI main colors --- */
  --navy:      #003B54;
  --vermillion:#C11920;
  --orange:    #EB612A;
  --orange-l:  #F18E38;
  --line:      #39424B;

  /* --- CI sub / pale colors (20% tint) --- */
  --pale-blue:   #DFE9F1;
  --pale-orange: #FAE7D6;
  --pale-gray:   #EAEEF1;
  --pale-white:  #FCFCFC;

  --text:      #000000;
  --text-sub:  #595959;

  --font: "游ゴシック体", "Yu Gothic Medium", "Yu Gothic", "Noto Sans JP", "Hiragino Kaku Gothic ProN", sans-serif;

  --container-w: 1200px;
  --gutter: 24px;
  --header-h: 68px;
}

*{ box-sizing:border-box; }
html{ scroll-behavior:smooth; scroll-padding-top: var(--header-h); }
body{
  margin:0;
  font-family: var(--font);
  color: var(--text);
  background-color: var(--pale-blue);
  background-image:
    linear-gradient(to right, #EAEEF1 1px, transparent 1px),
    linear-gradient(to bottom, #EAEEF1 1px, transparent 1px);
  background-size: 12px 12px;
  line-height: 1.9;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}
a{ color: inherit; text-decoration:none; }
img{ max-width:100%; display:block; }
button{ font-family: inherit; cursor:pointer; }

.container{
  max-width: var(--container-w);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

/* ---------------- Header / Nav ---------------- */
.site-header{
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--gutter);
  background: rgba(223,233,241,0.92);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid rgba(57,66,75,0.15);
  z-index: 100;
}
.brand{ display:flex; align-items:center; height: 100%; }
.brand-logo{ height: 26px; width: auto; }

.nav-toggle{
  width: 44px; height: 44px;
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  gap: 5px;
  background: none; border: none;
  z-index: 110;
}
.nav-toggle span{
  display:block; width: 22px; height: 2px;
  background: var(--navy);
  transition: transform .25s ease, opacity .25s ease;
}
.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); }

.nav-panel{
  position: fixed;
  top: var(--header-h);
  right: var(--gutter);
  background: #fff;
  border: 1px solid var(--pale-gray);
  box-shadow: 0 8px 24px rgba(0,0,0,0.08);
  min-width: 200px;
  padding: 8px 0;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: opacity .2s ease, transform .2s ease, visibility .2s ease;
  z-index: 105;
}
.nav-panel.is-open{
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.nav-panel ul{ list-style:none; margin:0; padding:0; }
.nav-panel a{
  display:block;
  padding: 12px 20px;
  font-size: 14.5px;
  letter-spacing: .04em;
  border-bottom: 1px solid var(--pale-gray);
}
.nav-panel li:last-child a{ border-bottom:none; }
.nav-panel a:hover{ background: var(--pale-gray); }

main{ padding-top: var(--header-h); }

.section{ padding: 56px 0; }
.section-lead{ max-width: 720px; margin: 0 0 8px; }

/* ---------------- Hero (guided by:) ---------------- */
.hero{ padding: 0; }
.hero-inner{
  height: 400px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.hero-logo{ height: 64px; width: auto; }

/* ---------------- 共通フレーム（各セクション共通の枠組み） ---------------- */
.frame-card{
  max-width: 860px;
  margin: 0 auto;
  border: 1px solid var(--line);
  padding: 48px 56px;
  background: var(--pale-white);
}
.frame-heading{
  font-size: 22px;
  font-weight: 700;
  color: var(--navy);
  margin: 0 0 16px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--text);
  text-align: center;
}
.concept-body{ margin: 0; font-size: 15.5px; }
.concept-logo{
  display: block;
  height: 81px;
  width: auto;
  margin: 3.8em auto;
}

/* ---------------- 事業領域 ---------------- */
.tile-grid{
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin: 32px 0 12px;
}
.tile{
  background: #fff;
  border: 1px solid var(--pale-gray);
  border-radius: 6px;
  padding: 28px 12px 22px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
  text-align: center;
  transition: border-color .2s ease, transform .2s ease;
}
.tile:hover{
  border-color: var(--navy);
  transform: translateY(-3px);
}
.tile--option{ opacity: .82; }
.tile-badge{
  width: 64px; height: 64px;
  border-radius: 50%;
  background: var(--pale-gray);
  display: flex; align-items: center; justify-content: center;
  padding: 14px;
}
.tile-badge img{ width: 100%; height: 100%; }
.tile-label{
  font-size: 14.5px;
  font-weight: 700;
  color: var(--text);
  line-height: 1.5;
}
.tile-label small{
  display: block;
  font-weight: 400;
  font-size: 11.5px;
  color: var(--text-sub);
  margin-top: 4px;
}

/* ---------------- メッセージ ---------------- */
.message-layout{
  display: grid;
  grid-template-columns: 1fr 224px;
  gap: 56px;
  align-items: start;
}
.message-photo img{
  width: 100%;
  aspect-ratio: 4 / 5;
  object-fit: cover;
  border-radius: 4px;
  background: var(--pale-gray);
}
.message-text p{ margin: 0 0 20px; font-size: 15.5px; }
.message-text .sign{
  text-align: right;
  margin-top: 32px;
  font-weight: 700;
}

/* ---------------- 会社概要 ---------------- */
.company-table{
  width: 100%;
  border-collapse: collapse;
  max-width: 820px;
}
.company-table th, .company-table td{
  border: 1px solid var(--pale-gray);
  padding: 14px 20px;
  text-align: left;
  font-size: 14.5px;
  vertical-align: top;
}
.company-table th{
  width: 180px;
  background: var(--pale-white);
  font-weight: 700;
  color: var(--navy);
}

/* ---------------- お問い合わせ ---------------- */
.contact-form{
  max-width: 560px;
  margin: 32px auto 0;
}
.form-row{
  margin-bottom: 24px;
}
.form-row label{
  display: block;
  font-size: 13.5px;
  font-weight: 700;
  margin-bottom: 8px;
}
.form-row .req{
  display: inline-block;
  font-size: 10.5px;
  font-weight: 400;
  color: #fff;
  background: var(--vermillion);
  padding: 1px 6px;
  border-radius: 2px;
  margin-left: 8px;
  vertical-align: middle;
}
.form-row input,
.form-row textarea{
  width: 100%;
  font-family: var(--font);
  font-size: 14.5px;
  color: var(--text);
  border: 1px solid var(--line);
  border-radius: 2px;
  padding: 10px 12px;
  background: #fff;
}
.form-row input:focus,
.form-row textarea:focus{
  outline: 2px solid var(--navy);
  outline-offset: 1px;
}
.form-row textarea{ resize: vertical; }
.hp-field{
  position: absolute;
  width: 1px; height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}
.form-submit{
  display: block;
  width: 100%;
  background: var(--navy);
  color: #fff;
  border: none;
  border-radius: 2px;
  padding: 14px;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: .08em;
  transition: opacity .2s ease;
}
.form-submit:hover{ opacity: .85; }
.form-submit:disabled{ opacity: .5; cursor: default; }
.form-status{
  margin: 16px 0 0;
  font-size: 13.5px;
  color: var(--text-sub);
  min-height: 1.5em;
}

/* ---------------- Footer ---------------- */
.site-footer{
  padding: 32px var(--gutter);
  text-align: center;
  font-size: 12.5px;
  color: var(--text-sub);
  border-top: 1px solid var(--pale-gray);
}

/* ---------------- Modal / Scrim ---------------- */
.scrim{
  position: fixed; inset: 0;
  background: rgba(0,0,0,0.55);
  display: flex; align-items: center; justify-content: center;
  padding: 24px;
  opacity: 0; visibility: hidden;
  transition: opacity .2s ease, visibility .2s ease;
  z-index: 200;
}
.scrim.is-open{ opacity: 1; visibility: visible; }
.modal{
  background: #fff;
  max-width: 520px;
  width: 100%;
  padding: 44px 40px 40px;
  position: relative;
  border-radius: 4px;
  transform: translateY(12px);
  transition: transform .2s ease;
}
.scrim.is-open .modal{ transform: translateY(0); }
.modal-close{
  position: absolute; top: 14px; right: 16px;
  width: 32px; height: 32px;
  border: none; background: none;
  font-size: 24px; line-height: 1;
  color: var(--text-sub);
}
.modal-icon{
  width: 56px; height: 56px;
  border-radius: 50%;
  background: var(--pale-gray);
  display: flex; align-items: center; justify-content: center;
  padding: 12px;
  margin: 0 auto 18px;
}
.modal-icon img{ width: 100%; height: 100%; }
.modal-heading{
  font-size: 19px;
  font-weight: 700;
  color: var(--navy);
  margin: 0 0 8px;
  text-align: center;
}
.modal-sub{
  font-size: 12.5px;
  font-weight: 400;
  color: var(--text-sub);
  margin: -4px 0 20px;
  text-align: center;
}
.modal-sub:empty{ display: none; margin: 0 0 12px; }
.modal-rule{
  border: none;
  border-bottom: 1px solid var(--text);
  margin: 0 0 20px;
}
.modal-body{ margin: 0; font-size: 14.5px; white-space: pre-line; }
.modal-rule--examples{ margin: 20px 0; }
.modal-examples-heading{
  margin: 0 0 10px;
  font-size: 12.5px;
  font-weight: 700;
  color: var(--text-sub);
  letter-spacing: .08em;
}
.modal-examples{
  margin: 0;
  padding: 0;
  list-style: none;
}
.modal-examples li{
  position: relative;
  padding-left: 1.1em;
  font-size: 14px;
  margin-bottom: 8px;
}
.modal-examples li:last-child{ margin-bottom: 0; }
.modal-examples li::before{
  content: "・";
  position: absolute;
  left: 0;
}

/* ---------------- Responsive (基礎のみ／SP作り込みは別途) ---------------- */
@media (max-width: 768px){
  .tile-grid{ grid-template-columns: repeat(2, 1fr); }
  .message-layout{ grid-template-columns: 1fr; }
  .message-photo{ max-width: 220px; margin: 0 auto; order: -1; }
  .frame-card{ padding: 36px 24px; }
  .section{ padding: 64px 0; }
  .company-table th{ width: 120px; }
}