@charset "UTF-8";
/* ホームページ緊急メンテナンスのお知らせ（PC 1920px／SP 375px のFigmaデザインより） */

:root {
  --mt-red: #ba0003;
  --mt-black: #2b2b2b;
  --mt-white: #fff;
  --mt-gray: #d9d9d9;
}

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

html, body { margin: 0; padding: 0; }

body {
  background: var(--mt-white);
  color: var(--mt-black);
  font-family: "Noto Sans JP", "Hiragino Kaku Gothic ProN", "Hiragino Sans", Meiryo, sans-serif;
  -webkit-font-smoothing: antialiased;
  -webkit-text-size-adjust: 100%;
}

h1, p { margin: 0; }

img { display: block; max-width: 100%; height: auto; }

.mt-sp { display: none; }

/* ヘッダー */
.mt-header {
  display: flex;
  align-items: center;
  height: 100px;
  padding: 0 clamp(16px, 2.76vw, 53px);
  background: var(--mt-white);
}

.mt-header__logo img { width: 342px; }

/* タイトル帯（赤＋ノイズ） */
.mt-title {
  position: relative;
  display: flex;
  align-items: center;
  height: 374px;
  background: var(--mt-red);
  overflow: hidden;
}

.mt-title::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='200' height='200'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='3' stitchTiles='stitch'/%3E%3CfeColorMatrix values='0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1.4 -.35'/%3E%3C/filter%3E%3Crect width='200' height='200' filter='url(%23n)'/%3E%3C/svg%3E");
  opacity: .14;
  pointer-events: none;
}

.mt-title__inner {
  position: relative;
  width: 100%;
  max-width: 1480px;
  margin: 0 auto;
  padding: 0 40px;
}

.mt-title__text {
  color: var(--mt-white);
  font-size: clamp(30px, 3.4vw, 48px);
  font-weight: 600;
  line-height: 1.45;
}

/* 本文 */
.mt-body {
  position: relative;
  padding: 200px 40px 180px;
  overflow: hidden;
}

/* 右下の薄いグレーの三角 */
.mt-body::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: 0;
  width: 392px;
  height: 374px;
  background: linear-gradient(to bottom, #e9e8e5, #edecea);
  clip-path: polygon(100% 0, 100% 100%, 0 100%);
  pointer-events: none;
}

.mt-body__inner {
  position: relative;
  z-index: 1;
  max-width: 1056px;
  margin: 0 auto;
}

.mt-lead {
  font-size: 20px;
  font-weight: 500;
  line-height: 2;
}

.mt-info {
  display: flex;
  flex-direction: column;
  gap: 48px;
  margin-top: 80px;
  font-size: 16px;
  font-weight: 400;
  line-height: 1.8;
}

.mt-info strong { font-weight: 700; }

/* フッター */
.mt-footer {
  position: relative;
  height: 499px;
  border-top: 1px solid var(--mt-gray);
  background: var(--mt-white);
}

.mt-footer__inner {
  max-width: 1586px;
  height: 100%;
  margin: 0 auto;
  padding: 57px 40px 0;
  position: relative;
}

.mt-footer__logo img { width: 188px; }

.mt-footer__copy {
  position: absolute;
  top: 396px;
  left: 40px;
  font-size: 11px;
  font-weight: 300;
  line-height: normal;
}

/* ページトップ */
.mt-pagetop {
  position: absolute;
  right: 0;
  bottom: 100%;
  width: 60px;
  height: 60px;
  padding: 0;
  border: 0;
  background: var(--mt-red);
  cursor: pointer;
  transition: opacity .2s;
}

.mt-pagetop::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 12px;
  height: 12px;
  border-top: 1px solid var(--mt-white);
  border-left: 1px solid var(--mt-white);
  transform: translate(-50%, -20%) rotate(45deg);
}

.mt-pagetop:hover { opacity: .8; }

/* SP */
@media (max-width: 767px) {
  .mt-sp { display: inline; }

  .mt-header {
    height: 65px;
    padding: 0 16px;
  }

  .mt-header__logo img { width: 124px; }

  .mt-title { height: 250px; }

  .mt-title__inner { padding: 0 18px; }

  .mt-title__text {
    font-size: 28px;
    line-height: normal;
  }

  .mt-body { padding: 80px 16px; }

  .mt-body::after { display: none; }

  .mt-body__inner { max-width: 344px; }

  .mt-lead {
    font-size: 16px;
    line-height: 2;
  }

  .mt-info { margin-top: 40px; }

  .mt-footer { height: 233px; }

  .mt-footer__inner {
    padding: 46px 16px 0;
    text-align: center;
  }

  .mt-footer__logo img {
    width: 167px;
    margin: 0 auto;
  }

  .mt-footer__copy {
    top: 178px;
    left: 0;
    right: 0;
    text-align: center;
  }

  .mt-pagetop {
    top: 47px;
    bottom: auto;
    width: 46px;
    height: 46px;
  }

  .mt-pagetop::before {
    width: 10px;
    height: 10px;
  }
}