/* =============================================
   営業代行会社 コーポレートサイト
   ホワイト × ブルー（清潔・信頼）＋クリック要素はゴールド
   ============================================= */

/* ---------- デザイントークン ---------- */
:root{
  --bg:        #F7FAFD;  /* 基調の白（わずかに青み） */
  --surface:   #FFFFFF;  /* カード・セクション差 */
  --line:      #DCE6F2;  /* 罫線・境界 */
  --blue:      #1E5FA8;  /* 主役のブルー（コーポレート） */
  --blue-hi:   #5C93D1;  /* ハイライト */
  --blue-deep: #123F73;  /* 陰・グラデ下端 */
  --text:      #16283B;  /* 本文（濃紺） */
  --muted:     #5C6E82;  /* 補足テキスト */
  --blue-grad: linear-gradient(120deg,#5C93D1,#1E5FA8 45%,#123F73);

  /* クリック要素専用のゴールド */
  --gold:      #C9A24B;
  --gold-hi:   #E8CD84;
  --gold-deep: #9A7B2E;
  --gold-grad: linear-gradient(120deg,#E8CD84,#C9A24B 45%,#9A7B2E);

  --font-serif: "Shippori Mincho B1", serif;
  --font-sans:  "Noto Sans JP", sans-serif;
  --font-en:    "Jost", sans-serif;

  --container: 1120px;
  --nav-height: 72px;
}

/* ---------- リセット / ベース ---------- */
*,
*::before,
*::after{ box-sizing: border-box; margin: 0; padding: 0; }

html{ scroll-behavior: smooth; scroll-padding-top: var(--nav-height); }

body{
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.9;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img{ max-width: 100%; display: block; }
a{ color: inherit; text-decoration: none; }
button{ font: inherit; color: inherit; background: none; border: none; cursor: pointer; }

:focus-visible{
  outline: 2px solid var(--blue);
  outline-offset: 3px;
}

.container{
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 32px;
}

.section{ padding: 140px 0; }

/* 文節単位でのみ折り返す（スマホの不自然な改行対策） */
.u-phrase{ display: inline-block; }

/* ---------- 共通パーツ ---------- */
.eyebrow{
  font-family: var(--font-en);
  font-weight: 500;
  font-size: 13px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--blue);
  margin-bottom: 20px;
}

.section-title{
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: clamp(28px, 4vw, 40px);
  letter-spacing: 0.04em;
  margin-bottom: 56px;
  position: relative;
  padding-left: 28px;
}
.section-title::before{
  content: "";
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 16px;
  height: 2px;
  background: var(--blue-grad);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .7s cubic-bezier(.22,.8,.3,1) .35s;
}
.section-title.in-view::before{ transform: scaleX(1); }

.btn{
  display: inline-block;
  font-family: var(--font-sans);
  font-weight: 500;
  font-size: 15px;
  letter-spacing: 0.08em;
  padding: 16px 40px;
  border-radius: 2px;
  transition: opacity .3s ease, box-shadow .3s ease, background-color .3s ease, color .3s ease, border-color .3s ease;
  min-height: 44px;
}
/* クリック要素＝ゴールド */
.btn-gold{
  background: var(--gold-grad);
  color: #16283B;
  font-weight: 700;
  position: relative;
  overflow: hidden;
}
.btn-gold:hover{
  box-shadow: 0 8px 24px rgba(201,162,75,.4);
}
/* ホバーで光が走るシーン（sheen） */
.btn-gold::after{
  content: "";
  position: absolute;
  top: 0;
  left: -70%;
  width: 45%;
  height: 100%;
  background: linear-gradient(100deg, transparent, rgba(255,255,255,.6), transparent);
  transform: skewX(-20deg);
  transition: left .55s ease;
}
.btn-gold:hover::after{ left: 130%; }
.btn-ghost{
  border: 1px solid var(--line);
  color: var(--text);
  background: var(--surface);
  position: relative;
}
.btn-ghost:hover{
  border-color: var(--gold);
  color: var(--gold-deep);
}
.btn-ghost .arrow{
  display: inline-block;
  transition: transform .3s ease;
}
.btn-ghost:hover .arrow{ transform: translateX(4px); }
.btn-large{ padding: 20px 56px; font-size: 16px; }

/* ---------- シグネチャー縦ライン ---------- */
.signature-line{
  position: fixed;
  top: 0;
  left: 28px;
  width: 1px;
  height: 100vh;
  background: rgba(30,95,168,.12);
  z-index: 50;
  pointer-events: none;
}
.signature-line span{
  display: block;
  width: 100%;
  height: 100%;
  background: var(--blue-grad);
  transform-origin: top;
  transform: scaleY(0);
}

/* ---------- 固定ナビ ---------- */
.site-nav{
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  transition: background-color .35s ease, backdrop-filter .35s ease, border-color .35s ease, box-shadow .35s ease;
  border-bottom: 1px solid transparent;
}
.site-nav.is-scrolled{
  background: rgba(255,255,255,.86);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  border-bottom-color: var(--line);
  box-shadow: 0 2px 16px rgba(18,63,115,.06);
}
.nav-inner{
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 32px;
  height: var(--nav-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-logo{
  display: flex;
  align-items: center;
}
/* ロゴ画像（透過PNG・濃紺） */
.nav-logo img,
.footer-logo img{
  height: 34px;
  width: auto;
  transition: opacity .3s ease;
}
.nav-logo:hover img{ opacity: .7; }
.nav-links{
  display: flex;
  align-items: center;
  gap: 36px;
}
.nav-links a{
  font-family: var(--font-en);
  font-weight: 600;
  font-size: 15px;
  letter-spacing: 0.1em;
  color: var(--text);
  position: relative;
  padding: 6px 0;
}
/* リンク（クリック要素）＝ゴールドの下線 */
.nav-links a:not(.nav-cta)::after{
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 1px;
  background: var(--gold-grad);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .3s ease;
}
.nav-links a:not(.nav-cta):hover::after{ transform: scaleX(1); }
.nav-cta{
  border: 1px solid var(--gold);
  color: var(--gold-deep);
  padding: 10px 26px !important;
  border-radius: 2px;
  transition: background-color .3s ease, color .3s ease;
}
.nav-cta:hover{
  background: var(--gold);
  color: #FFFFFF;
}

/* ハンバーガー */
.nav-toggle{
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 6px;
  width: 44px;
  height: 44px;
  padding: 10px;
}
.nav-toggle span{
  display: block;
  width: 100%;
  height: 1.5px;
  background: var(--text);
  transition: transform .3s ease, opacity .3s ease;
}
.nav-toggle.is-open span:nth-child(1){ transform: translateY(7.5px) rotate(45deg); }
.nav-toggle.is-open span:nth-child(2){ opacity: 0; }
.nav-toggle.is-open span:nth-child(3){ transform: translateY(-7.5px) rotate(-45deg); }

/* ---------- ヒーロー ---------- */
.hero{
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  padding: calc(var(--nav-height) + 32px) 0 80px;
  overflow: hidden;
  text-align: center;
  /* 実写の朝日と山並み。白のオーバーレイで薄く上品に（下端はページ基調色へ溶ける） */
  background:
    linear-gradient(180deg, rgba(247,250,253,.30) 0%, rgba(247,250,253,.62) 45%, rgba(247,250,253,.92) 78%, #F7FAFD 100%),
    url("../assets/hero_bg.jpg") center top / cover no-repeat,
    linear-gradient(180deg, #D8EAFA 0%, #F7FAFD 100%);
}
.hero .container{ position: relative; z-index: 1; }
/* 背景上部のロゴ（会社の顔として最初に見せる） */
.hero-logo{
  display: block;
  margin: 0 auto 44px;
  height: clamp(56px, 10vw, 88px);
  width: auto;
  opacity: 0;
  animation: fadeUp .8s ease .1s forwards;
}
.hero-eyebrow{
  opacity: 0;
  animation: fadeUp .8s ease .2s forwards;
}
.hero-title{
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: clamp(40px, 7.5vw, 76px);
  line-height: 1.35;
  letter-spacing: 0.04em;
}
.hero-line{
  display: block;
  overflow: hidden;
}
.hero-line span{
  display: block;
  transform: translateY(110%);
  animation: riseIn .9s cubic-bezier(.22,.8,.3,1) forwards;
}
.hero-line:nth-child(1) span{ animation-delay: .4s; }
.hero-line:nth-child(2) span{ animation-delay: .55s; }

.hero-underline{
  width: 180px;
  height: 2px;
  background: var(--blue-grad);
  margin: 36px auto;
  transform: scaleX(0);
  transform-origin: center;
  animation: drawLine 1s cubic-bezier(.22,.8,.3,1) 1.1s forwards;
}
.hero-sub{
  color: var(--muted);
  font-size: 17px;
  max-width: 560px;
  margin: 0 auto;
  opacity: 0;
  animation: fadeUp .8s ease 1.3s forwards;
}
.hero-cta{
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 20px;
  margin-top: 48px;
  opacity: 0;
  animation: fadeUp .8s ease 1.5s forwards;
}
.hero-scroll{
  position: absolute;
  bottom: 36px;
  right: 32px;
  font-family: var(--font-en);
  font-size: 11px;
  letter-spacing: 0.3em;
  color: var(--muted);
  writing-mode: vertical-rl;
}
.hero-scroll::after{
  content: "";
  display: block;
  width: 1px;
  height: 48px;
  background: var(--blue);
  margin: 12px auto 0;
  animation: scrollPulse 2s ease infinite;
}

@keyframes fadeUp{
  from{ opacity: 0; transform: translateY(20px); }
  to{ opacity: 1; transform: translateY(0); }
}
@keyframes riseIn{
  to{ transform: translateY(0); }
}
@keyframes drawLine{
  to{ transform: scaleX(1); }
}
@keyframes scrollPulse{
  0%{ transform: scaleY(0); transform-origin: top; }
  50%{ transform: scaleY(1); transform-origin: top; }
  51%{ transform-origin: bottom; }
  100%{ transform: scaleY(0); transform-origin: bottom; }
}

/* ---------- スクロールリビール ---------- */
.reveal{
  opacity: 0;
  transform: translateY(28px);
  transition: opacity .8s ease, transform .8s cubic-bezier(.22,.8,.3,1);
  transition-delay: var(--stagger, 0s);
}
.reveal.in-view{
  opacity: 1;
  transform: translateY(0);
}

/* ---------- ミッション ---------- */
.mission{
  border-top: 1px solid var(--line);
  background: var(--surface);
  text-align: center;
}
.mission .eyebrow{ margin-bottom: 32px; }
.mission-statement{
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: clamp(32px, 5.5vw, 56px);
  letter-spacing: 0.06em;
  margin-bottom: 40px;
}
.mission-body{
  color: var(--muted);
  font-size: 16px;
  max-width: 640px;
  margin: 0 auto;
}

/* ---------- サービス（スライダー） ---------- */
.service{
  border-top: 1px solid var(--line);
}
.slider{ position: relative; }
.slider:focus-visible{ outline-offset: 8px; }

.slider-tabs{
  display: flex;
  gap: 8px;
  position: relative;
  border-bottom: 1px solid var(--line);
}
.slider-tab{
  font-family: var(--font-sans);
  font-weight: 500;
  font-size: 15px;
  letter-spacing: 0.04em;
  color: var(--muted);
  padding: 14px 24px;
  min-height: 44px;
  transition: color .3s ease;
  white-space: nowrap;
}
/* タブ（クリック要素）＝ゴールドの番号とインジケーター */
.slider-tab .tab-num{
  font-family: var(--font-en);
  font-size: 13px;
  letter-spacing: 0.15em;
  color: var(--gold-deep);
  margin-right: 10px;
}
.slider-tab.is-active{ color: var(--text); }
.slider-tab:hover{ color: var(--gold-deep); }

.tab-indicator{
  position: absolute;
  bottom: -1px;
  left: 0;
  height: 2px;
  width: 100px;
  background: var(--gold-grad);
  transition: transform .4s cubic-bezier(.22,.8,.3,1), width .4s cubic-bezier(.22,.8,.3,1);
}

.slider-viewport{
  position: relative;
  overflow: hidden;
  margin-top: 56px;
  min-height: 260px;
}
.slide{
  position: absolute;
  inset: 0;
  opacity: 0;
  transform: translateX(40px);
  transition: opacity .4s ease, transform .4s ease;
  pointer-events: none;
}
.slide.is-active{
  position: relative;
  opacity: 1;
  transform: translateX(0);
  pointer-events: auto;
}
.slide.is-leaving-left{ transform: translateX(-40px); }

.slide-num{
  font-family: var(--font-en);
  font-size: clamp(48px, 8vw, 80px);
  font-weight: 400;
  letter-spacing: 0.1em;
  line-height: 1;
  background: var(--blue-grad);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
  margin-bottom: 24px;
}
.slide-title{
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: clamp(24px, 3.4vw, 32px);
  letter-spacing: 0.05em;
  margin-bottom: 20px;
}
.slide-body{
  color: var(--muted);
  max-width: 640px;
}

.slider-arrows{
  display: flex;
  justify-content: flex-end;
  gap: 12px;
  margin-top: 40px;
}
/* 矢印（クリック要素）＝ホバーでゴールド */
.slider-arrow{
  width: 52px;
  height: 52px;
  border: 1px solid var(--line);
  border-radius: 2px;
  font-size: 22px;
  line-height: 1;
  color: var(--muted);
  background: var(--surface);
  transition: border-color .3s ease, color .3s ease, box-shadow .3s ease;
  display: flex;
  align-items: center;
  justify-content: center;
}
.slider-arrow:hover{
  border-color: var(--gold);
  color: var(--gold-deep);
  box-shadow: 0 4px 16px rgba(201,162,75,.25);
}

/* ---------- 強み ---------- */
.strength{
  border-top: 1px solid var(--line);
  background: var(--surface);
}
.strength-cards{
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.strength-card{
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 44px 32px;
  position: relative;
  overflow: hidden;
  transition: border-color .4s ease, opacity .8s ease, transform .5s cubic-bezier(.22,.8,.3,1), box-shadow .5s ease;
}
.strength-card:hover{
  border-color: var(--blue-hi);
  transform: translateY(-6px);
  box-shadow: 0 16px 40px rgba(18,63,115,.12);
}
/* カーソルに追従するブルーの光（JSが --mx / --my を更新） */
.strength-card::before{
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(360px circle at var(--mx, 50%) var(--my, 50%), rgba(30,95,168,.08), transparent 60%);
  opacity: 0;
  transition: opacity .4s ease;
  pointer-events: none;
}
.strength-card:hover::before{ opacity: 1; }
.strength-card > *{ position: relative; }
.card-label{
  font-family: var(--font-en);
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--blue);
  margin-bottom: 18px;
}
.card-title{
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 22px;
  letter-spacing: 0.04em;
  margin-bottom: 14px;
}
.card-body{
  color: var(--muted);
  font-size: 15px;
}

.strength-stats{
  display: flex;
  justify-content: space-around;
  flex-wrap: wrap;
  gap: 40px;
  margin-top: 96px;
  padding-top: 72px;
  border-top: 1px solid var(--line);
}
.stat{ text-align: center; }
.stat-num{
  font-family: var(--font-en);
  font-size: clamp(44px, 6vw, 64px);
  font-weight: 400;
  line-height: 1.1;
  background: linear-gradient(110deg, #123F73, #1E5FA8 35%, #5C93D1 50%, #1E5FA8 65%, #123F73);
  background-size: 220% auto;
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
  animation: shimmer 6s linear infinite;
}
@keyframes shimmer{
  from{ background-position: 220% center; }
  to{ background-position: -20% center; }
}
.stat-unit{ font-size: 0.45em; margin-left: 4px; }
.stat-label{
  color: var(--muted);
  font-size: 14px;
  letter-spacing: 0.1em;
  margin-top: 10px;
}

/* ---------- 会社概要 ---------- */
.company{
  border-top: 1px solid var(--line);
}
.company-table{
  max-width: 760px;
}
.company-row{
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: 24px;
  padding: 26px 8px;
  border-bottom: 1px solid var(--line);
}
.company-row:first-child{ border-top: 1px solid var(--blue); }
.company-row dt{
  font-weight: 500;
  color: var(--blue-deep);
  letter-spacing: 0.08em;
}
.company-row dd{ color: var(--text); }

/* ---------- お問い合わせ ---------- */
.contact{
  border-top: 1px solid var(--line);
  background: linear-gradient(180deg, var(--surface), #EDF5FC);
  text-align: center;
  padding-bottom: 180px;
}
.contact-title{
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: clamp(28px, 5vw, 48px);
  letter-spacing: 0.05em;
  margin-bottom: 32px;
}
.contact-body{
  color: var(--muted);
  margin-bottom: 56px;
}

/* ---------- フッター ---------- */
.site-footer{
  border-top: 1px solid var(--line);
  background: var(--surface);
  padding: 56px 0;
}
.footer-inner{
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 28px;
}
.footer-logo{
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 17px;
  letter-spacing: 0.06em;
}
.footer-links{
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 28px;
}
.footer-links a{
  font-family: var(--font-en);
  font-size: 13px;
  letter-spacing: 0.12em;
  color: var(--muted);
  transition: color .3s ease;
  padding: 4px 0;
}
.footer-links a:hover{ color: var(--gold-deep); }
.footer-copy{
  font-family: var(--font-en);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--muted);
}

/* =============================================
   レスポンシブ
   ============================================= */

/* タブレット */
@media (max-width: 1024px){
  .section{ padding: 110px 0; }
  .signature-line{ left: 16px; }
  .strength-cards{ grid-template-columns: repeat(2, 1fr); }
}

/* スマートフォン */
@media (max-width: 640px){
  body{ font-size: 15px; }
  .container{ padding: 0 24px; }
  .section{ padding: 88px 0; }
  .signature-line{ display: none; }

  /* PC専用の改行はスマホでは無効化（不自然な折り返し対策） */
  .pc-only{ display: none; }

  /* ナビ → ハンバーガー */
  .nav-toggle{ display: flex; }
  .nav-links{
    position: fixed;
    top: var(--nav-height);
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    background: rgba(255,255,255,.97);
    -webkit-backdrop-filter: blur(12px);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--line);
    padding: 12px 24px 28px;
    transform: translateY(-12px);
    opacity: 0;
    visibility: hidden;
    transition: opacity .3s ease, transform .3s ease, visibility .3s;
  }
  .nav-links.is-open{
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }
  .nav-links a{
    width: 100%;
    padding: 16px 0;
    font-size: 15px;
  }
  .nav-cta{
    margin-top: 12px;
    text-align: center;
    padding: 14px 26px !important;
  }

  .hero{ min-height: 92svh; }
  .hero-cta{ flex-direction: column; align-items: stretch; }
  .hero-cta .btn{ text-align: center; }
  .hero-scroll{ display: none; }

  /* 見出しの文字サイズをスマホ幅に最適化（途中折れ防止） */
  .mission-statement{ font-size: clamp(26px, 8vw, 32px); }
  .contact-title{ font-size: clamp(24px, 7vw, 28px); }

  .slider-tabs{
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
  }
  .slider-tabs::-webkit-scrollbar{ display: none; }
  .slider-tab{ padding: 14px 16px; font-size: 14px; }
  .slider-viewport{ min-height: 340px; }

  .strength-cards{ grid-template-columns: 1fr; }
  .strength-stats{ gap: 32px; margin-top: 64px; padding-top: 48px; }

  .company-row{
    grid-template-columns: 1fr;
    gap: 6px;
    padding: 20px 4px;
  }
}

/* =============================================
   アクセシビリティ：モーション低減
   ============================================= */
@media (prefers-reduced-motion: reduce){
  *,
  *::before,
  *::after{
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
    scroll-behavior: auto !important;
  }
  html{ scroll-behavior: auto; }
  .reveal,
  .hero-logo,
  .hero-eyebrow,
  .hero-sub,
  .hero-cta{ opacity: 1; transform: none; }
  .hero-line span{ transform: none; animation: none; }
  .hero-underline{ transform: scaleX(1); animation: none; }
  .signature-line{ display: none; }
}