/* ============================================================
   K&B コンサルティング — style.css
   ロゴカラー: シルバー × ネイビーブルー × ブラック
   ============================================================ */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

/* ============================================================
   ローディング画面
   ============================================================ */

/* ローディング中はスクロール禁止 */
body.is-loading { overflow: hidden; }

.loader {
  position: fixed;
  inset: 0;
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #03050a;
  pointer-events: all;
}

/* ローダー完了後: カーテンが上にスライドアウト */
.loader.is-done {
  pointer-events: none;
}

/* ============================================================
   内側コンテンツ（ロゴ + バー）
   ============================================================ */
.loader__inner {
  position: relative;
  z-index: 3;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 32px;
}

/* ローダー Canvas */
#loader-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
}

/* ビネット：外側を暗く、中央を明るく */
.loader__vignette {
  position: absolute;
  inset: 0;
  background: radial-gradient(
    ellipse 50% 50% at 50% 50%,
    transparent 10%,
    rgba(6, 13, 31, 0.45) 50%,
    rgba(6, 13, 31, 0.92) 100%
  );
  z-index: 2;
  pointer-events: none;
}

/* ロゴマーク */
.loader__logo {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  opacity: 0;
  transform: translateY(12px);
  animation: loaderLogoIn 0.9s cubic-bezier(0.22, 0.61, 0.36, 1) 0.2s forwards;
}

@keyframes loaderLogoIn {
  to { opacity: 1; transform: none; }
}

/* ロゴ画像 */
.loader__logo-img {
  width: clamp(160px, 30vw, 260px);
  height: auto;
  display: block;
  /* ロゴが黒背景なのでそのまま表示。白背景の場合は mix-blend-mode: screen; に変更 */
}

/* プログレスバー */
.loader__bar-wrap {
  width: 200px;
  height: 1px;
  background: rgba(176, 186, 200, 0.12);
  position: relative;
  overflow: hidden;
  opacity: 0;
  animation: loaderBarIn 0.5s ease 0.7s forwards;
}

@keyframes loaderBarIn {
  to { opacity: 1; }
}

.loader__bar {
  position: absolute;
  top: 0; left: 0;
  height: 100%; width: 0%;
  background: linear-gradient(90deg, #1e3a7a, #b0bac8, #d4dae6);
  background-size: 200% 100%;
  animation: barShimmer 1.5s ease infinite;
  transition: width 0.05s linear;
}

@keyframes barShimmer {
  0%   { background-position: 100% 0; }
  100% { background-position: -100% 0; }
}

/* パーセント表示 */
.loader__pct {
  font-family: 'Inter', sans-serif;
  font-size: 0.65rem;
  font-weight: 300;
  letter-spacing: 0.2em;
  color: #3d4a5c;
  opacity: 0;
  animation: loaderBarIn 0.5s ease 0.7s forwards;
}

.loader__pct::after { content: '%'; }

/* ============================================================
   カーテン（スライドアウト用の覆い）
   ============================================================ */
.loader__curtain {
  position: fixed;
  inset: 0;
  background: var(--bg);
  /* 最初は画面下に隠れている */
  transform: translateY(100%);
  transition: none;
  z-index: 10;
}

/* 終了時：下から上へ抜けていく（ローダーコンテンツを一瞬覆って退場） */
.loader.is-leave .loader__curtain {
  transform: translateY(-200%);
  transition: transform 1.2s cubic-bezier(0.76, 0, 0.24, 1);
}

/* カーテンが通過する間、内側コンテンツをフェードアウト */
.loader.is-leave .loader__inner {
  opacity: 0;
  transition: opacity 0.4s ease 0.2s;
}

/* ============================================================
   ローダー完全終了後、DOMから除外（visibility:hidden）
   ============================================================ */
.loader.is-hidden {
  visibility: hidden;
}

:root {
  /* ── ブランドカラー ── */
  --bg:          #060d1f;        /* 背景：ディープネイビー */
  --navy:        #0a1535;        /* ダークネイビー */
  --navy-2:      #112048;        /* ミドルネイビー */
  --blue:        #1e3a7a;        /* ブランドブルー（ロゴより） */
  --blue-light:  #2a52a8;        /* アクセントブルー */
  --silver:      #b0bac8;        /* シルバー（ロゴより） */
  --silver-light:#d4dae6;        /* ライトシルバー */
  --white:       #f0f3f8;        /* オフホワイト */
  --pure:        #ffffff;
  --gray:        #6a7a8e;        /* サブテキスト */
  --border:      rgba(176,186,200,0.12); /* 繊細なボーダー */

  /* ── タイポグラフィ ── */
  --font-en:  'Inter', sans-serif;
  --font-ja:  'Noto Sans JP', sans-serif;

  /* ── アニメーション ── */
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
  --tr:   0.4s var(--ease);
}

html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: var(--font-ja);
  font-weight: 300;
  color: var(--white);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
ul { list-style: none; }
img { max-width: 100%; display: block; }

/* ---------- Utilities ---------- */
.container {
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 48px;
}

.section-padding { padding: 120px 0; }
.bg-navy { background: var(--navy); }

/* ---------- Typography ---------- */
.section-label {
  display: block;
  font-family: var(--font-en);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--silver);
  margin-bottom: 20px;
}

.section-title-en {
  font-family: var(--font-en);
  font-size: clamp(2.25rem, 4.5vw, 3.5rem);
  font-weight: 200;
  letter-spacing: -0.03em;
  line-height: 1.15;
  color: var(--white);
  margin-bottom: 20px;
}

.section-title-en em {
  font-style: italic;
  font-weight: 200;
  /* シルバーグラデーション */
  background: linear-gradient(135deg, var(--silver-light), var(--silver));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  /* イタリックの右端がグラデーションクリップで切れるのを防ぐ */
  padding-right: 0.2em;
  -webkit-box-decoration-break: clone;
  box-decoration-break: clone;
}

.section-desc {
  font-size: 0.9375rem;
  line-height: 2;
  color: var(--gray);
  margin-bottom: 64px;
}

.section-head { margin-bottom: 72px; }
.section-head.light .section-label { color: var(--silver); }
.section-head.light .section-title-en { color: var(--white); }
.section-head.light .section-desc { color: var(--gray); }

/* ---------- ボタン ---------- */
.btn {
  display: inline-block;
  font-family: var(--font-en);
  font-size: 0.8125rem;
  font-weight: 400;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 14px 36px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background var(--tr), color var(--tr), border-color var(--tr);
  white-space: nowrap;
}

.btn-primary {
  background: var(--blue);
  border-color: var(--blue);
  color: var(--pure);
}
.btn-primary:hover {
  background: var(--blue-light);
  border-color: var(--blue-light);
}

.btn-ghost {
  background: transparent;
  border-color: var(--border);
  color: var(--silver);
}
.btn-ghost:hover {
  border-color: var(--silver);
  color: var(--white);
}

.btn-lg { padding: 18px 52px; font-size: 0.875rem; }

/* ---------- HEADER ---------- */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 28px 48px;
  transition: background var(--tr), padding var(--tr), border-color var(--tr);
  border-bottom: 1px solid transparent;
}

.site-header.scrolled {
  padding: 16px 48px;
  background: rgba(5, 7, 13, 0.92);
  backdrop-filter: blur(24px) saturate(150%);
  -webkit-backdrop-filter: blur(24px) saturate(150%);
  border-bottom-color: var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1160px;
  margin: 0 auto;
}

/* ロゴ */
.site-logo {
  display: flex;
  align-items: center;
  text-decoration: none;
}

.site-logo__img {
  height: 80px !important;
  width: auto !important;
  max-width: none !important;
  display: block;
}

/* ナビ */
.site-nav ul {
  display: flex;
  align-items: center;
  gap: 40px;
}

.site-nav a {
  font-family: var(--font-en);
  font-size: 0.75rem;
  font-weight: 400;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--gray);
  transition: color var(--tr);
}
.site-nav a:hover { color: var(--silver-light); }

.site-nav .nav-contact {
  border: 1px solid var(--border);
  padding: 8px 20px;
  color: var(--silver);
  transition: border-color var(--tr), color var(--tr), background var(--tr);
}
.site-nav .nav-contact:hover {
  border-color: var(--blue-light);
  background: rgba(42, 82, 168, 0.15);
  color: var(--white);
}

/* ハンバーガー */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 6px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.hamburger span {
  display: block;
  width: 24px;
  height: 1px;
  background: var(--silver);
  transition: background var(--tr);
}

/* モバイルメニュー */
.mobile-menu {
  display: none;
  position: fixed;
  inset: 0;
  background: var(--bg);
  z-index: 99;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--tr);
}
.mobile-menu.open { opacity: 1; pointer-events: all; }
.mobile-menu a {
  font-family: var(--font-en);
  font-size: 1.75rem;
  font-weight: 200;
  letter-spacing: 0.05em;
  color: var(--silver);
  display: block;
  padding: 16px 0;
  transition: color var(--tr);
}
.mobile-menu a:hover { color: var(--white); }
.mobile-menu li + li { margin-top: 4px; }

/* ---------- HERO ---------- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
}

/* ヒーロー下部のフェードアウト（Aboutセクションへの滑らかな繋ぎ） */
.hero::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 200px;
  background: linear-gradient(to bottom, transparent, var(--bg));
  pointer-events: none;
  z-index: 3;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background: var(--bg);
}

/* ネイビーグロー：背景に動くオーブを追加 */
.hero-bg::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 70% 55% at 50% 110%, rgba(30,58,122,0.55) 0%, transparent 65%),
    radial-gradient(ellipse 45% 40% at 15% 25%, rgba(42,82,168,0.2) 0%, transparent 60%),
    radial-gradient(ellipse 35% 35% at 85% 15%, rgba(10,21,53,0.8) 0%, transparent 55%);
  animation: heroOrb 10s ease-in-out infinite alternate;
  z-index: 1;
}

@keyframes heroOrb {
  0%   { opacity: 0.7; transform: scale(1); }
  50%  { opacity: 1;   transform: scale(1.05); }
  100% { opacity: 0.8; transform: scale(0.97); }
}

/* Canvasはfull-screen */
#hero-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0.85;
  z-index: 2;
}

/* ブルーアクセントのグラデーション */
.hero-gradient {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(ellipse 55% 50% at 0% 100%, rgba(30,58,122,0.4) 0%, transparent 60%),
    radial-gradient(ellipse 35% 35% at 100% 0%, rgba(11,20,40,0.7) 0%, transparent 55%);
  /* マウス追従グラデーションはJSで上書き */
  transition: background 0.1s ease;
}

.hero-content {
  position: relative;
  z-index: 2;
  padding-top: 100px;
}

/* ---- テキスト初期状態（JSでアニメーション） ---- */
.hero-eyebrow {
  font-family: var(--font-en);
  font-size: 0.7rem;
  font-weight: 400;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--silver);
  opacity: 0;
  margin-bottom: 32px;
  transform: translateY(12px);
  animation: heroFadeUp 0.8s var(--ease) 0.4s forwards;
}

.hero-title {
  font-family: var(--font-en);
  font-size: clamp(3.5rem, 9vw, 8rem);
  font-weight: 200;
  line-height: 1.0;
  letter-spacing: -0.04em;
  color: var(--pure);
  margin-bottom: 36px;
  overflow: hidden;
}

/* 各行をクリップしてスライドアップ */
.hero-title .line {
  display: block;
  opacity: 0;
  transform: translateY(100%);
  animation: heroSlideUp 0.9s var(--ease) forwards;
}
.hero-title .line:nth-child(1) { animation-delay: 0.55s; }
.hero-title .line:nth-child(2) { animation-delay: 0.72s; }

/* ピリオドをシルバーブルーに */
.hero-period {
  background: linear-gradient(135deg, var(--silver), var(--blue-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-sub {
  font-size: 0.9375rem;
  font-weight: 300;
  line-height: 2;
  color: var(--gray);
  margin-bottom: 48px;
  letter-spacing: 0.03em;
  opacity: 0;
  transform: translateY(14px);
  animation: heroFadeUp 0.8s var(--ease) 1.0s forwards;
}

.hero-cta {
  display: flex;
  align-items: center;
  gap: 16px;
  opacity: 0;
  transform: translateY(14px);
  animation: heroFadeUp 0.8s var(--ease) 1.2s forwards;
}

/* ---- アニメーション定義 ---- */
@keyframes heroSlideUp {
  to { opacity: 1; transform: translateY(0); }
}

@keyframes heroFadeUp {
  to { opacity: 1; transform: translateY(0); }
}

/* eyebrowの opacity は animation で制御するので 0.6 にしない */
.hero-eyebrow.animated { opacity: 0.6; }

/* スクロールインジケーター */
.hero-scroll {
  position: absolute;
  bottom: 48px;
  right: 48px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}

.scroll-line {
  width: 1px;
  height: 64px;
  background: linear-gradient(to bottom, transparent, var(--silver));
  position: relative;
  overflow: hidden;
}

.scroll-line::after {
  content: '';
  position: absolute;
  top: -100%;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--pure);
  animation: scrollDrop 2.4s ease-in-out infinite;
}

@keyframes scrollDrop {
  0%   { top: -100%; opacity: 0; }
  30%  { opacity: 1; }
  100% { top: 100%; opacity: 0; }
}

.hero-scroll span {
  font-family: var(--font-en);
  font-size: 0.6rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gray);
  writing-mode: vertical-rl;
}

/* ---------- ABOUT ---------- */
.about { background: var(--bg); }

.about-inner {
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: 80px;
  align-items: start;
}

.about-label {
  padding-top: 8px;
}

.about-title {
  font-family: var(--font-ja);
  font-size: clamp(1.625rem, 3vw, 2.5rem);
  font-weight: 200;
  line-height: 1.6;
  letter-spacing: 0.02em;
  color: var(--white);
  margin-bottom: 28px;
}

.about-text {
  font-size: 0.9375rem;
  line-height: 2.1;
  color: var(--gray);
  margin-bottom: 56px;
  max-width: 600px;
}

.about-numbers {
  display: flex;
  gap: 56px;
  border-top: 1px solid var(--border);
  padding-top: 40px;
}

.number-item { display: flex; flex-direction: column; gap: 8px; }

.number {
  font-family: var(--font-en);
  font-size: 2.75rem;
  font-weight: 200;
  letter-spacing: -0.04em;
  /* シルバーグラデーション */
  background: linear-gradient(135deg, var(--silver-light), var(--silver) 60%, #6a8ec4);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
}

.number-label {
  font-size: 0.75rem;
  font-weight: 300;
  letter-spacing: 0.1em;
  color: var(--gray);
}

/* ---------- DOMAIN ---------- */
.domain { background: var(--navy); }

.domain-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--border);
}

.domain-card {
  background: var(--navy);
  padding: 52px 40px;
  transition: background var(--tr);
  position: relative;
}

.domain-card::before {
  content: '';
  position: absolute;
  bottom: 0; left: 40px; right: 40px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--blue), transparent);
  opacity: 0;
  transition: opacity var(--tr);
}

.domain-card:hover { background: rgba(30, 58, 122, 0.12); }
.domain-card:hover::before { opacity: 1; }

.domain-card__num {
  font-family: var(--font-en);
  font-size: 0.65rem;
  font-weight: 500;
  letter-spacing: 0.2em;
  color: var(--blue-light);
  margin-bottom: 24px;
}

.domain-card__icon {
  color: var(--silver);
  margin-bottom: 24px;
  opacity: 0.7;
}

.domain-card__title {
  font-family: var(--font-ja);
  font-size: 1.125rem;
  font-weight: 400;
  letter-spacing: 0.05em;
  color: var(--white);
  margin-bottom: 16px;
}

.domain-card__text {
  font-size: 0.875rem;
  line-height: 1.9;
  color: var(--gray);
}

/* ---------- SERVICE ---------- */
.service-list {
  border-top: 1px solid var(--border);
}

.service-item {
  display: grid;
  grid-template-columns: 1fr auto;
  grid-template-rows: auto auto;
  gap: 16px 40px;
  padding: 40px 0;
  border-bottom: 1px solid var(--border);
  transition: background var(--tr);
}

.service-item:hover {
  background: rgba(176,186,200,0.02);
  padding-left: 16px;
  padding-right: 16px;
  margin: 0 -16px;
}

.service-item__header {
  display: flex;
  align-items: center;
  gap: 24px;
  grid-column: 1;
  grid-row: 1;
}

.service-item__num {
  font-family: var(--font-en);
  font-size: 0.65rem;
  font-weight: 500;
  letter-spacing: 0.15em;
  color: var(--blue-light);
  flex-shrink: 0;
  width: 24px;
}

.service-item__title {
  font-family: var(--font-ja);
  font-size: 1.0625rem;
  font-weight: 400;
  color: var(--white);
  letter-spacing: 0.02em;
}

.service-item__text {
  grid-column: 1;
  grid-row: 2;
  font-size: 0.875rem;
  line-height: 1.9;
  color: var(--gray);
  padding-left: 48px;
  max-width: 640px;
}

.service-item__tag {
  grid-column: 2;
  grid-row: 1 / 3;
  align-self: center;
  font-family: var(--font-en);
  font-size: 0.65rem;
  font-weight: 400;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--silver);
  opacity: 0.4;
  white-space: nowrap;
}

/* ---------- CTA ---------- */
.cta { background: var(--bg); }

.cta-inner {
  max-width: 640px;
  margin: 0 auto;
  text-align: center;
}

.cta-inner .section-label { text-align: center; }

.cta-title {
  font-family: var(--font-ja);
  font-size: clamp(1.875rem, 3.5vw, 2.75rem);
  font-weight: 200;
  line-height: 1.65;
  letter-spacing: 0.04em;
  color: var(--white);
  margin-bottom: 20px;
}

.cta-text {
  font-size: 0.9375rem;
  line-height: 2;
  color: var(--gray);
  margin-bottom: 48px;
}

/* ---------- FOOTER ---------- */
.site-footer {
  background: #03050a;
  border-top: 1px solid var(--border);
  padding: 72px 0 36px;
}

.footer-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  padding-bottom: 56px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 36px;
}

.footer-logo-img {
  width: auto;
  height: 240px;
  display: block;
  margin-bottom: 16px;
}

.footer-tagline {
  font-family: var(--font-en);
  font-size: 0.65rem;
  letter-spacing: 0.2em;
  color: var(--gray);
  opacity: 0.5;
  text-transform: uppercase;
}

.footer-nav { display: flex; gap: 60px; }

.footer-nav-head {
  font-family: var(--font-en);
  font-size: 0.65rem;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gray);
  opacity: 0.4;
  margin-bottom: 18px;
}

.footer-nav-col ul { display: flex; flex-direction: column; gap: 12px; }

.footer-nav-col a {
  font-size: 0.875rem;
  font-weight: 300;
  color: var(--gray);
  letter-spacing: 0.04em;
  transition: color var(--tr);
}
.footer-nav-col a:hover { color: var(--silver-light); }

.footer-bottom {
  display: flex;
  justify-content: center;
}

.footer-copy {
  font-family: var(--font-en);
  font-size: 0.75rem;
  color: var(--gray);
  opacity: 0.35;
  letter-spacing: 0.05em;
}

/* ============================================================
   セクション共通アニメーション
   ============================================================ */

/* ---- 基本リビール ---- */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.75s var(--ease), transform 0.75s var(--ease);
}
.reveal.visible { opacity: 1; transform: none; }

/* ---- section-label: letter-spacing が広がりながら出現 ---- */
.section-label {
  display: block;
  opacity: 0;
  letter-spacing: 0.5em;
  transition: opacity 0.7s var(--ease), letter-spacing 0.7s var(--ease);
}
.section-label.visible {
  opacity: 1;
  letter-spacing: 0.25em;
}

/* ---- 見出し: フェード＋スライドアップ（overflow不要） ---- */
.anim-heading {
  /* overflow: hidden を使わないのでイタリックが切れない */
}
.anim-heading-inner {
  display: block;
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.85s var(--ease), transform 0.85s var(--ease);
}
.anim-heading-inner.visible {
  opacity: 1;
  transform: none;
}

/* ---- About: テキストフェード ---- */
.about-text {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.75s var(--ease) 0.2s, transform 0.75s var(--ease) 0.2s;
}
.about-text.visible { opacity: 1; transform: none; }

/* ---- About: 数字カウントアップ ---- */
.number {
  display: inline-block;
  transition: opacity 0.5s var(--ease);
}

/* ---- Domain: ボーダードロー（下線が左から伸びる） ---- */
.domain-card {
  position: relative;
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease),
              background var(--tr);
}
.domain-card.visible { opacity: 1; transform: none; }

/* カード下部のブルーライン（ホバーで光る） */
.domain-card::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0;
  width: 0; height: 1px;
  background: linear-gradient(90deg, var(--blue), var(--blue-light));
  transition: width 0.6s var(--ease);
}
.domain-card.visible::after { width: 100%; }

/* ---- Domain: アイコン回転フェード ---- */
.domain-card__icon {
  opacity: 0;
  transform: rotate(-8deg) scale(0.85);
  transition: opacity 0.6s var(--ease) 0.35s, transform 0.6s var(--ease) 0.35s;
}
.domain-card.visible .domain-card__icon {
  opacity: 0.7;
  transform: none;
}

/* ---- Service: 左からラインが伸びる ---- */
.service-list {
  position: relative;
}

.service-item {
  position: relative;
  opacity: 0;
  transform: translateX(-16px);
  transition: opacity 0.65s var(--ease), transform 0.65s var(--ease),
              background var(--tr), padding var(--tr), margin var(--tr);
}
.service-item.visible { opacity: 1; transform: none; }

/* 番号: visible 時にブルーに点灯 */
.service-item__num {
  transition: color 0.4s var(--ease) 0.3s;
  color: transparent;
}
.service-item.visible .service-item__num {
  color: var(--blue-light);
}

/* ボーダートップ: 左から描画 */
.service-item::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  height: 1px; width: 0;
  background: linear-gradient(90deg, var(--blue-light), transparent);
  transition: width 0.7s var(--ease);
}
.service-item.visible::before { width: 100%; }

/* ---- CTA: タイトルのシマーライン ---- */
.cta-inner { position: relative; }

.cta-title {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.8s var(--ease), transform 0.8s var(--ease);
}
.cta-title.visible { opacity: 1; transform: none; }

.cta-text {
  opacity: 0;
  transition: opacity 0.7s var(--ease) 0.2s;
}
.cta-text.visible { opacity: 1; }

/* ---- CTA ボタン: グロー点灯 ---- */
.btn-primary {
  position: relative;
  overflow: hidden;
}

.btn-primary::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(105deg,
    transparent 40%,
    rgba(255,255,255,0.15) 50%,
    transparent 60%
  );
  transform: translateX(-100%);
  animation: btnShimmer 3.5s ease-in-out 2s infinite;
}

@keyframes btnShimmer {
  0%   { transform: translateX(-100%); }
  40%  { transform: translateX(100%); }
  100% { transform: translateX(100%); }
}

/* ---- Footer: ブランドロゴ フェードアップ ---- */
.footer-brand {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.8s var(--ease), transform 0.8s var(--ease);
}
.footer-brand.visible { opacity: 1; transform: none; }

.footer-nav {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.8s var(--ease) 0.15s, transform 0.8s var(--ease) 0.15s;
}
.footer-nav.visible { opacity: 1; transform: none; }

/* ---------- Responsive ---------- */
/* ============================================================
   レスポンシブ — タブレット (〜1024px)
   ============================================================ */
@media (max-width: 1024px) {
  .container { padding: 0 36px; }

  .domain-grid { grid-template-columns: 1fr; }
  .domain-card { border-bottom: 1px solid var(--border); }

  .about-inner { grid-template-columns: 140px 1fr; gap: 48px; }
}

/* ============================================================
   レスポンシブ — スマートフォン (〜768px)
   ============================================================ */
@media (max-width: 768px) {
  /* ---------- Base ---------- */
  :root { font-size: 15px; }
  .container { padding: 0 20px; }
  .section-padding { padding: 72px 0; }

  /* ---------- タイポグラフィ ---------- */
  .section-title-en {
    font-size: clamp(1.875rem, 8vw, 2.5rem);
  }
  .section-desc {
    font-size: 0.875rem;
    margin-bottom: 44px;
  }
  .section-head { margin-bottom: 48px; }

  /* ---------- ヘッダー ---------- */
  .site-header { padding: 18px 20px; }
  .site-header.scrolled { padding: 12px 20px; }

  .site-logo__img { height: 28px; }

  .site-nav { display: none; }
  .hamburger { display: flex; }
  .mobile-menu { display: flex; }

  /* ---------- ヒーロー ---------- */
  .hero-content {
    padding-top: 100px;
    padding-bottom: 60px;
  }

  .hero-eyebrow {
    font-size: 0.65rem;
    letter-spacing: 0.2em;
    margin-bottom: 24px;
  }

  .hero-title {
    font-size: clamp(2.75rem, 13vw, 4.5rem);
    margin-bottom: 28px;
    letter-spacing: -0.03em;
  }

  .hero-sub {
    font-size: 0.875rem;
    margin-bottom: 36px;
    line-height: 1.9;
  }

  .hero-cta {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }

  .btn { padding: 13px 28px; font-size: 0.8125rem; }
  .btn-lg { padding: 14px 32px; font-size: 0.8125rem; }

  .hero-scroll { right: 20px; bottom: 28px; }

  /* ---------- About ---------- */
  .about-inner {
    grid-template-columns: 1fr;
    gap: 28px;
  }
  .about-label { display: none; }

  .about-title {
    font-size: clamp(1.5rem, 6vw, 2rem);
    margin-bottom: 20px;
  }

  .about-text {
    font-size: 0.875rem;
    margin-bottom: 40px;
    line-height: 2;
  }

  .about-numbers {
    gap: 28px;
    padding-top: 32px;
    flex-wrap: wrap;
  }

  .number { font-size: 2.25rem; }
  .number-label { font-size: 0.75rem; }

  /* ---------- Domain ---------- */
  .domain-card { padding: 28px 0; }
  .domain-card__num { font-size: 0.65rem; margin-bottom: 16px; }
  .domain-card__title { font-size: 1.125rem; }
  .domain-card__text { font-size: 0.875rem; line-height: 1.85; }

  /* ---------- Service ---------- */
  .service-item {
    grid-template-columns: 1fr;
    padding: 28px 0;
    gap: 0;
  }

  .service-item__header {
    margin-bottom: 12px;
  }

  .service-item__num {
    font-size: 0.65rem;
    margin-bottom: 8px;
  }

  .service-item__title { font-size: 1rem; }
  .service-item__text { font-size: 0.875rem; line-height: 1.85; margin-bottom: 12px; }

  .service-item__tag {
    grid-column: 1;
    grid-row: auto;
    align-self: auto;
    margin-top: 0;
  }

  /* ---------- CTA ---------- */
  .cta-title {
    font-size: clamp(1.5rem, 6vw, 2rem);
    margin-bottom: 16px;
  }
  .cta-text { font-size: 0.875rem; margin-bottom: 36px; }

  /* ---------- フッター ---------- */
  .footer-top { flex-direction: column; gap: 40px; }
  .footer-nav { flex-direction: column; gap: 28px; }
  .footer-logo-img { height: 80px; }
  .footer-brand { text-align: left; align-items: flex-start; }
  .footer-tagline { font-size: 0.75rem; }
  .footer-copy { font-size: 0.7rem; }

  /* ---------- ローダー ---------- */
  .loader__logo-img { width: clamp(120px, 55vw, 180px); }
  .loader__bar-wrap { width: 160px; }

  /* ---------- モバイルメニュー ---------- */
  .mobile-menu ul { gap: 8px; }
  .mobile-menu ul li a { font-size: 1.25rem; }
}