@charset "UTF-8";

:root {
  --black-color: #222222;
  --main-color: #123C7E;
  --sub-color: #00AFCC;
  --border-color: #bdbdbd;
  --bg-color: #F4F4F4;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--black-color);
  font-family: "Noto Sans JP", sans-serif;
  font-size: 16px;
  line-height: 1.85;
  overflow-x: hidden;
  background: #ffffff;
}

h1,
h2,
h3,
p {
  margin: 0;
}

a {
  color: inherit;
  text-decoration: none;
}

ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

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

header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: #fff;
  border-bottom: 1px solid #f0f0f0;
}

.header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: min(100%, 1440px);
  min-height: 76px;
  margin: 0 auto;
  padding: 12px 5.2%;
}

.header_logo a {
  display: flex;
  align-items: center;
  gap: 14px;
}

.header_logo img {
  width: 42px;
}

.header_logo p {
  color: #0D0D0D;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: .04em;
  white-space: nowrap;
}

.nav_list {
  display: flex;
  align-items: center;
  gap: clamp(25px, 3.25vw, 52px);
}

.nav_item a {
  position: relative;
  color: var(--main-color);
  font-size: 14px;
  letter-spacing: .08em;
}

.nav_item a::after {
  position: absolute;
  right: 0;
  bottom: -7px;
  left: 0;
  height: 1px;
  background: var(--main-color);
  content: "";
  transform: scaleX(0);
  transition: transform .2s;
}

.nav_item a:hover::after {
  transform: scaleX(1);
}

.nav_item:last-child a {
  display: block;
  min-width: 120px;
  padding: 10px 24px;
  border-radius: 999px;
  color: #fff;
  background: var(--main-color);
  text-align: center;
}

.nav_item:last-child a::after {
  display: none;
}

.nav_item:last-child a:hover {
  color: #fff;
  background: #0d2d60;
}

.hamburger {
  display: none;
}

.black_bg {
  display: none;
}

/* ==========================================================================
   メインビジュアル：光彩（白い光）で文字を浮き立たせるデザイン
   ========================================================================== */
.top {
  position: relative;
  width: 100vw;
  margin-left: calc(50% - 50vw);
  line-height: 0;
  background: #ffffff; /* 背景は清潔感のある純白 */
  overflow: hidden;
}

.top_inner {
  position: relative;
  width: 100%;
  margin: 0 auto;
}

/* 背景画像 */
.top_bg_img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
}

/* キャッチコピー枠（1440px幅でレイアウト） */
.top_copy_container {
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 100%;
  max-width: 1440px;
  height: 100%;
  padding: 0 5.2%;
  pointer-events: none;
  z-index: 2;
}

/* キャッチコピー（SVG画像）の配置 */
.top_copy_img {
  position: absolute;
  top: 50%;
  left: 5.2%;
  transform: translateY(-50%);
  width: clamp(280px, 35vw, 480px);
  pointer-events: none;
}

/* 黒い影を完全に削除し、純白の柔らかい光彩（グロー）のみを付与 */
.top_copy_img img {
  width: 100% !important;
  height: auto !important;
  max-width: 100%;
  object-fit: contain;
  filter: drop-shadow(0px 0px 10px #ffffff) 
          drop-shadow(0px 0px 20px #ffffff) 
          drop-shadow(0px 0px 30px #ffffff);
}

.bg-wrapper {
  width: 100%;
  background: #fff url("assets/img/background.png") center top / cover no-repeat;
}

/* ==========================================================================
   セクション共通設定
   ========================================================================== */
.mission,
.business,
.company {
  position: relative;
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding-left: 180px;
  scroll-margin-top: 76px;
  padding-top: 120px;
  padding-bottom: 120px;
}

.mission::before,
.business::before,
.company::before {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 180px;
  width: 1px;
  background: var(--border-color);
  content: "";
}

.section-title {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  width: 180px;
}

.section-title h2 {
  position: absolute;
  top: 120px;
  left: 50%;
  transform: translateX(-50%);
  margin: 0;
  color: var(--main-color);
  font-family: "Oswald", sans-serif;
  font-size: clamp(32px, 5.8vw, 82px);
  font-weight: 600;
  letter-spacing: .02em;
  line-height: 1;
  white-space: nowrap;
  writing-mode: vertical-rl;
  text-orientation: sideways;
}

.mission_inner {
  width: 100%;
  max-width: 900px;
  padding: 0 40px;
}

.mission_inner p {
  margin-bottom: 2em;
  font-size: clamp(14px, 1.15vw, 17px);
  font-weight: 400;
  line-height: 2.7;
  letter-spacing: .025em;
}

.mission_inner p:last-child {
  margin-bottom: 0;
}

/* ==========================================================================
   BUSINESS セクション
   ========================================================================== */
.inner_content {
  display: block;
  width: 100%;
  max-width: 960px;
  margin-bottom: clamp(60px, 8vw, 100px);
  padding-left: clamp(20px, 4vw, 40px);
  padding-right: 20px;
}

.inner_content:last-child {
  margin-bottom: 0;
}

.content_title_block {
  font-size: clamp(16px, 1.35vw, 18px);
  font-weight: 700;
  color: #ffffff;
  background: var(--main-color);
  padding: 16px 28px;
  margin-bottom: 24px;
  letter-spacing: 0.08em;
  border-radius: 2px;
}

.business_grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 48px 40px;
  padding: 10px 0 30px;
}

.grid_item {
  position: relative;
  transition: transform 0.3s ease;
}

.grid_item:hover {
  transform: translateX(4px);
}

.business_grid dt {
  display: flex;
  align-items: center;
  font-size: clamp(15px, 1.2vw, 18px);
  font-weight: 700;
  color: var(--main-color);
  margin-bottom: 12px;
}

.business_grid dt .b_icon {
  font-size: 26px;
  color: var(--sub-color);
  margin-right: 12px;
  display: inline-block;
  line-height: 1;
}

.business_grid dt .dt_text {
  position: relative;
  top: -1px;
  letter-spacing: 0.03em;
}

.business_grid dd {
  font-size: clamp(13px, 1.05vw, 14.5px);
  color: #666666;
  line-height: 1.8;
  padding-left: 38px;
}

/* ==========================================================================
   COMPANY セクション
   ========================================================================== */
.company {
  background: #fff;
}

.company_inner {
  display: flex;
  align-items: center;
  width: 100%;
  max-width: 960px;
  padding-right: 20px;
}

.company_img {
  flex: 0 0 clamp(135px, 18vw, 245px);
  margin: 0 clamp(34px, 4vw, 60px) 0 clamp(20px, 3vw, 40px);
}

.company_img img {
  width: 100%;
}

.company_table {
  flex: 1;
  min-width: 0;
}

.company_table table {
  width: 100%;
  border-collapse: collapse;
}

.company_table th,
.company_table td {
  padding: 16px 10px;
  border-bottom: 1px solid var(--border-color);
  font-size: clamp(13px, 1.08vw, 16px);
  line-height: 1.75;
  text-align: left;
  vertical-align: top;
}

.company_table th {
  width: 30%;
  color: var(--black-color);
  font-weight: 700;
  white-space: nowrap;
}

/* ==========================================================================
   フッター
   ========================================================================== */
footer {
  width: 100%;
  padding: clamp(52px, 6vw, 90px) 0 22px;
  color: #fff;
  background: var(--main-color) url("assets/img/background.png") center / cover;
  scroll-margin-top: 76px;
}

.footer_content {
  display: flex;
  justify-content: space-between;
  width: min(100%, 1440px);
  margin: 0 auto;
  padding: 0 5.2%;
}

.footer_title {
  margin-bottom: 28px;
  font-size: clamp(18px, 1.8vw, 26px);
  font-weight: 700;
  letter-spacing: .05em;
  width: 30%;
}

.footer_inner {
  align-items: center;
  justify-content: space-between;
  gap: 50px;
  width: 60%;
}

.footer_inner p {
  font-size: clamp(12px, 1vw, 15px);
  line-height: 2;
  margin-bottom: clamp(18px, 1.8vw, 26px);
}

.footer_cv {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex: 0 0 min(40%, 480px);
  min-height: 64px;
  padding: 12px 30px;
  border: 1px solid #fff;
  border-radius: 999px;
  font-size: clamp(14px, 1.15vw, 17px);
  font-weight: 700;
  transition: background .2s, color .2s;
}

.footer_cv:hover {
  color: var(--main-color);
  background: #fff;
}

.footer_cv span {
  font-size: 1.4em;
}

#copyright {
  margin-top: clamp(48px, 7vw, 105px);
  color: rgba(255, 255, 255, .75);
  font-size: 11px;
  text-align: center;
}

/* ==========================================================================
   レスポンシブ：タブレット・スマホ（700px以下）
   ========================================================================== */
@media (max-width: 700px) {
  body {
    font-size: 15px;
    line-height: 1.8;
  }

  .top {
    width: 100%;
    margin-left: 0;
  }

  .mission,
  .business,
  .company {
    padding-top: 60px;
    padding-bottom: 60px;
    padding-left: 56px;
    scroll-margin-top: 48px;
    width: 100%;
  }

  footer {
    padding: 60px 24px 24px;
    scroll-margin-top: 48px;
  }

  .mission::before,
  .business::before,
  .company::before {
    left: 44px;
  }

  .section-title {
    width: 44px;
  }

  .section-title h2 {
    left: 50%;
    top: 60px;
    transform: translateX(-50%);
    font-size: 28px;
    writing-mode: vertical-rl;
    text-orientation: sideways;
  }

  .header {
    min-height: 48px;
    padding: 8px 16px;
  }

  .header_logo {
    max-width: 70%;
    z-index: 120;
  }

  .header_logo a {
    gap: 8px;
  }

  .header_logo img {
    width: 32px;
  }

  .header_logo p {
    font-size: 15px;
    font-weight: 700;
  }

  .hamburger {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    position: absolute;
    right: 16px;
    top: 50%;
    transform: translateY(-50%);
    width: 30px;
    height: 22px;
    background: transparent;
    border: none;
    cursor: pointer;
    z-index: 125;
    padding: 0;
  }

  .hamburger_border {
    display: block;
    width: 100%;
    height: 2px;
    background-color: var(--main-color);
    transition: transform 0.3s ease, opacity 0.3s ease, background-color 0.3s ease;
  }

  .hamburger.active .hamburger_border_top {
    transform: translateY(10px) rotate(45deg);
    background-color: #fff;
  }

  .hamburger.active .hamburger_border_center {
    opacity: 0;
  }

  .hamburger.active .hamburger_border_bottom {
    transform: translateY(-10px) rotate(-45deg);
    background-color: #fff;
  }

  .nav {
    position: fixed;
    top: 0;
    right: -100%;
    width: 80%;
    max-width: 320px;
    height: 100vh;
    background: var(--main-color);
    padding: 80px 24px 40px;
    transition: right 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 115;
    box-shadow: -4px 0 10px rgba(0, 0, 0, 0.15);
  }

  .nav.active {
    right: 0;
  }

  .nav_list {
    flex-direction: column;
    align-items: flex-start;
    gap: 24px;
  }

  .nav_item {
    width: 100%;
  }

  .nav_item a {
    display: block;
    width: 100%;
    padding: 12px 0;
    font-size: 16px;
    color: #fff;
    border-bottom: 1px solid rgba(255, 255, 255, 0.15);
  }

  .nav_item a::after {
    display: none;
  }

  .nav_item:last-child a {
    margin-top: 10px;
    border-radius: 4px;
    background: #fff;
    color: var(--main-color);
    text-align: center;
    font-weight: 700;
  }

  .black_bg {
    display: block;
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(0, 0, 0, 0.6);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
    z-index: 110;
  }

  .black_bg.active {
    opacity: 1;
    pointer-events: auto;
  }

  .top_bg_img {
    min-height: 240px;
    object-fit: cover;
    object-position: right center;
  }

  .top_copy_container {
    position: static;
    transform: none;
    padding: 0;
  }

  .top_copy_img {
    position: absolute;
    top: 50%;
    left: 8.5%;
    transform: translateY(-50%);
    width: 60%;
    max-width: 260px;
    min-width: 200px;
  }

  .top_copy_img img {
    width: 100% !important;
    height: auto !important;
    max-width: 100%;
    object-fit: contain;
    filter: drop-shadow(0px 0px 8px #ffffff) drop-shadow(0px 0px 16px #ffffff);
  }

  .mission_inner {
    padding: 0 16px 0 20px;
  }

  .mission_inner p {
    margin-bottom: 20px;
    font-size: 15px;
    line-height: 1.8;
  }

  .business .inner_content {
    padding-left: 20px;
    padding-right: 16px;
    margin-bottom: 40px;
  }

  .content_title_block {
    padding: 12px 16px;
    margin-bottom: 20px;
    font-size: 16px;
  }

  .business_grid {
    grid-template-columns: 1fr;
    gap: 32px 0;
    padding: 0;
  }

  .business_grid dt {
    font-size: 16px;
    margin-bottom: 10px;
  }

  .business_grid dd {
    padding-left: 38px;
    font-size: 15px;
    color: #555555;
  }

  .company_inner {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding-right: 16px;
  }

  .company_img {
    flex: 0 0 auto;
    width: 140px;
    margin: 0 0 24px 24px;
  }

  .company_table {
    width: 100%;
    padding-left: 24px;
  }

  .company_table th,
  .company_table td {
    padding: 12px 8px;
    font-size: 15px;
  }

  .footer_content {
    flex-direction: column;
    gap: 24px;
    padding: 0;
  }

  .footer_title {
    width: 100%;
    margin-bottom: 0;
    font-size: 20px;
  }

  .footer_inner {
    width: 100%;
    padding-right: 0;
  }

  .footer_inner p {
    font-size: 15px;
    line-height: 1.8;
    margin-bottom: 24px;
  }

  .footer_cv {
    width: 100%;
    max-width: 320px;
    min-height: 52px;
    padding: 8px 24px;
    font-size: 16px;
  }

  #copyright {
    margin-top: 40px;
    font-size: 12px;
  }
}

/* ==========================================================================
   スクロールアニメーション設定 (FADE IN UP)
   ========================================================================== */
.js-fade {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 1.0s cubic-bezier(0.215, 0.61, 0.355, 1),
    transform 1.0s cubic-bezier(0.215, 0.61, 0.355, 1);
}

.js-fade.is-show {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  .js-fade {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
  }
}