/* =====================================================
   Gravitation Consulting — Brand CSS v7.0
   参考: cloud-ace.jp デザイン言語
   Identity: 鮮やかブルー × クリーンホワイト × GCIゴールドアクセント
   特徴: 大型Hero・斜めセクション分割・大丸角カード・明瞭CTA
   ===================================================== */

:root {
  /* ── Primary Blue ── */
  --blue:          #1a6fd4;
  --blue-dark:     #1558b0;
  --blue-darker:   #0f4090;
  --blue-light:    #3b8ce8;
  --blue-pale:     #eef4fd;
  --blue-mid:      #c7ddf7;
  --blue-ghost:    rgba(26,111,212,0.07);
  --blue-hero:     #1352a0;

  /* ── Accent ── */
  --cyan:          #00b4d8;
  --cyan-light:    #90e0ef;

  /* ── GCI Gold (brand signature) ── */
  --gold:          #f0a500;
  --gold-light:    #ffd166;
  --gold-dark:     #c47f00;

  /* ── Neutral ── */
  --white:         #ffffff;
  --gray-50:       #f8fafc;
  --gray-100:      #f1f5f9;
  --gray-200:      #e2e8f0;
  --gray-300:      #cbd5e1;
  --gray-500:      #64748b;
  --gray-700:      #334155;
  --gray-900:      #0f172a;

  /* ── Text ── */
  --text-base:     #1a202c;
  --text-sub:      #4a5568;
  --text-muted:    #8a9ab0;

  /* ── Dark section ── */
  --dark:          #0d1b2e;
  --dark-mid:      #152340;

  /* ── Shadow ── */
  --shadow-sm:  0 2px 8px rgba(0,0,0,0.06);
  --shadow-md:  0 6px 24px rgba(0,0,0,0.08);
  --shadow-lg:  0 12px 48px rgba(0,0,0,0.10);
  --shadow-xl:  0 24px 72px rgba(0,0,0,0.12);
  --shadow-blue: 0 8px 32px rgba(26,111,212,0.32);
  --shadow-gold: 0 8px 24px rgba(240,165,0,0.38);

  /* ── Radius ── */
  --r-sm:  6px;
  --r-md:  12px;
  --r-lg:  20px;
  --r-xl:  28px;
  --r-2xl: 40px;
  --r-full: 9999px;

  /* ── Motion ── */
  --ease: 0.24s cubic-bezier(0.4,0,0.2,1);
  --ease-out: 0.36s cubic-bezier(0,0,0.2,1);

  --header-h: 72px;
  --max-w: 1200px;
}

/* ─────────────────────────
   RESET
───────────────────────── */
*,*::before,*::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; overflow-x: hidden; }
body {
  font-family: 'Noto Sans JP','Inter',sans-serif;
  color: var(--text-base);
  background: #0c1f4a;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
a { text-decoration: none; color: inherit; }
img { max-width: 100%; display: block; }
button { cursor: pointer; font-family: inherit; }
ul { list-style: none; }

/* ─────────────────────────
   LAYOUT
───────────────────────── */
.container    { max-width: var(--max-w); margin: 0 auto; padding: 0 32px; }
.section-padding { padding: 96px 0; }

/* ─────────────────────────
   SECTION LABELS & TITLES
───────────────────────── */
.section-label {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 11px; font-weight: 700; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--blue); margin-bottom: 14px;
}
.section-label::before {
  content: ''; display: block;
  width: 24px; height: 2px; background: var(--blue); border-radius: 2px;
}
.section-label-white { color: rgba(255,255,255,0.85); }
.section-label-white::before { background: var(--gold); }

.section-title {
  font-size: clamp(1.75rem, 3.5vw, 2.75rem);
  font-weight: 800; line-height: 1.2; letter-spacing: -0.02em;
  color: var(--text-base); margin-bottom: 18px;
}
.section-title.text-white { color: #fff; }
.section-title.text-left  { text-align: left; }

.section-subtitle {
  font-size: 1rem; color: var(--text-sub); line-height: 1.85; max-width: 620px;
}
.section-subtitle.text-muted-light { color: rgba(255,255,255,0.65); }
.section-subtitle.text-left { text-align: left; }

.section-header {
  text-align: center; margin-bottom: 64px;
}
.section-header .section-subtitle { margin: 0 auto; }

/* ─────────────────────────
   BUTTONS
───────────────────────── */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 14px 30px; border-radius: var(--r-full);
  font-weight: 700; font-size: 14px; font-family: inherit;
  border: none; cursor: pointer; transition: all var(--ease);
  white-space: nowrap; position: relative; overflow: hidden;
}
.btn-lg { padding: 17px 40px; font-size: 15px; }
.btn-sm { padding: 10px 20px; font-size: 13px; }
.btn-full { width: 100%; justify-content: center; }

/* Blue primary */
.btn-primary, .btn-blue {
  background: var(--blue); color: #fff;
  box-shadow: var(--shadow-blue);
}
.btn-primary:hover, .btn-blue:hover {
  background: var(--blue-dark); transform: translateY(-2px);
  box-shadow: 0 14px 40px rgba(26,111,212,0.40);
}

/* Gold CTA */
.btn-gold {
  background: linear-gradient(135deg, var(--gold-light), var(--gold));
  color: var(--dark); font-weight: 800;
  box-shadow: var(--shadow-gold);
}
.btn-gold:hover { transform: translateY(-2px); box-shadow: 0 14px 40px rgba(240,165,0,0.45); }

/* White */
.btn-white {
  background: #fff; color: var(--blue); box-shadow: var(--shadow-md);
}
.btn-white:hover { transform: translateY(-2px); background: var(--blue-pale); box-shadow: var(--shadow-lg); }

/* Ghost outline */
.btn-ghost {
  background: transparent; color: #fff;
  border: 2px solid rgba(255,255,255,0.55);
}
.btn-ghost:hover { background: rgba(255,255,255,0.13); border-color: #fff; transform: translateY(-2px); }

/* Outline blue */
.btn-outline {
  background: transparent; color: var(--blue);
  border: 2px solid var(--blue);
}
.btn-outline:hover { background: var(--blue-pale); transform: translateY(-2px); }

/* ─────────────────────────
   HEADER
───────────────────────── */
#site-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 200;
  height: var(--header-h);
  background: rgba(255,255,255,0.97);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--gray-200);
  transition: box-shadow var(--ease);
}
#site-header.scrolled { box-shadow: 0 4px 24px rgba(0,0,0,0.09); }

.nav-inner {
  display: flex; align-items: center; height: var(--header-h); gap: 8px;
}

/* Logo */
.logo-link { display: flex; align-items: center; gap: 11px; flex-shrink: 0; }
.logo-emblem {
  width: 40px; height: 40px; border-radius: 11px;
  background: linear-gradient(135deg, var(--blue), var(--blue-dark));
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 4px 14px rgba(26,111,212,0.38);
  position: relative; flex-shrink: 0;
}
.logo-orbit { display: none; }
.logo-g {
  font-size: 18px; font-weight: 900; font-family: 'Inter',sans-serif;
  color: #fff; letter-spacing: -0.02em;
}
.logo-text-wrap { display: flex; flex-direction: column; gap: 0; }
.logo-text {
  font-size: 19px; font-weight: 900; color: var(--dark);
  font-family: 'Inter',sans-serif; letter-spacing: -0.03em; line-height: 1.1;
}
.logo-sub {
  font-size: 8.5px; font-weight: 500; color: var(--text-muted);
  letter-spacing: 0.04em; display: none;
}
@media (min-width: 768px) { .logo-sub { display: block; } }

/* Desktop nav */
.desktop-nav { display: none; align-items: center; gap: 0; margin-left: auto; }
@media (min-width: 1024px) { .desktop-nav { display: flex; } }

.nav-item {
  padding: 8px 16px; font-size: 13.5px; font-weight: 600;
  color: var(--text-sub); border-radius: var(--r-md);
  transition: color var(--ease), background var(--ease);
}
.nav-item:hover, .nav-item.active {
  color: var(--blue); background: var(--blue-pale);
}
.nav-cta-btn {
  margin-left: 8px; padding: 10px 24px;
  background: var(--blue); color: #fff;
  border-radius: var(--r-full); font-size: 13px; font-weight: 700;
  display: inline-flex; align-items: center; gap: 7px;
  transition: all var(--ease); box-shadow: var(--shadow-blue);
}
.nav-cta-btn:hover { background: var(--blue-dark); transform: translateY(-1px); }

/* Hamburger */
.hamburger {
  display: flex; flex-direction: column; justify-content: center;
  gap: 5px; width: 44px; height: 44px; margin-left: auto;
  background: none; border: none; padding: 10px;
  border-radius: var(--r-md); transition: background var(--ease);
}
.hamburger:hover { background: var(--gray-100); }
.hamburger span {
  display: block; width: 22px; height: 2px;
  background: var(--dark); border-radius: 2px; transition: all var(--ease);
}
.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
@media (min-width: 1024px) { .hamburger { display: none; } }

/* Mobile menu */
.mobile-menu {
  position: fixed; top: var(--header-h); left: 0; right: 0;
  background: #fff; padding: 12px 0 24px;
  box-shadow: 0 12px 40px rgba(0,0,0,0.10);
  transform: translateY(-200%);
  visibility: hidden;
  transition: transform 0.32s cubic-bezier(0.32,0.72,0,1), visibility 0.32s;
  z-index: 199; border-bottom: 1px solid var(--gray-200);
}
.mobile-menu.open { transform: translateY(0); visibility: visible; }
.mobile-nav-item {
  display: flex; align-items: center; padding: 13px 28px;
  font-size: 15px; font-weight: 600; color: var(--text-sub);
  transition: background var(--ease), color var(--ease);
}
.mobile-nav-item:hover { background: var(--blue-pale); color: var(--blue); }
.mobile-nav-item.cta {
  margin: 12px 28px 0; background: var(--blue); color: #fff;
  border-radius: var(--r-full); justify-content: center; font-weight: 700;
}
.mobile-nav-item.cta:hover { background: var(--blue-dark); }

/* ─────────────────────────
   HERO — cloud-ace style
   深青グラデ + 右側ビジュアル + 斜め波底
───────────────────────── */
.hero-section {
  position: relative; min-height: 100vh;
  display: flex; align-items: center;
  padding-top: var(--header-h);
  background: linear-gradient(140deg, #0c1f4a 0%, #1a4492 55%, #1e5cbf 100%);
  overflow: hidden;
}

/* Grid dots background */
.hero-section::before {
  content: '';
  position: absolute; inset: 0;
  background-image:
    radial-gradient(circle, rgba(255,255,255,0.12) 1px, transparent 1px);
  background-size: 36px 36px;
  pointer-events: none;
}

/* Star canvas */
.star-canvas {
  position: absolute; inset: 0; width: 100%; height: 100%;
  pointer-events: none; z-index: 0;
}

/* ── Gravitational Field (GCI品牌核心装飾) ── */
.gravity-field {
  position: absolute;
  right: -60px; top: 50%; transform: translateY(-50%);
  width: 560px; height: 560px;
  pointer-events: none; z-index: 1;
}
@media (max-width: 1100px) { .gravity-field { width: 380px; height: 380px; right: -40px; } }
@media (max-width: 900px)  { .gravity-field { width: 260px; height: 260px; right: -30px; opacity: 0.5; } }
@media (max-width: 640px)  { .gravity-field { display: none; } }

.gf-ring {
  position: absolute; top: 50%; left: 50%;
  border-radius: 50%; border: 1.5px solid rgba(255,255,255,0.13);
  transform: translate(-50%,-50%);
}
.gf-r1 { width: 140px; height: 140px; border-color: rgba(240,165,0,0.45); animation: gf-pulse 3.0s ease-in-out infinite; }
.gf-r2 { width: 230px; height: 230px; border-color: rgba(255,255,255,0.20); animation: gf-pulse 3.4s ease-in-out infinite 0.4s; }
.gf-r3 { width: 340px; height: 340px; border-color: rgba(255,255,255,0.12); animation: gf-pulse 3.8s ease-in-out infinite 0.8s; }
.gf-r4 { width: 480px; height: 480px; border-color: rgba(255,255,255,0.07); animation: gf-pulse 4.4s ease-in-out infinite 1.2s; }

@keyframes gf-pulse {
  0%,100% { opacity: 0.6; transform: translate(-50%,-50%) scale(1); }
  50%      { opacity: 1.0; transform: translate(-50%,-50%) scale(1.03); }
}

.gf-lens {
  position: absolute; top: 50%; left: 50%;
  width: 340px; height: 1px;
  background: linear-gradient(90deg, transparent, rgba(240,165,0,0.3), transparent);
  transform: translate(-50%,-50%) rotate(-35deg);
}
.gf-lens2 {
  position: absolute; top: 50%; left: 50%;
  width: 260px; height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
  transform: translate(-50%,-50%) rotate(55deg);
}

/* Satellite dots */
.gf-satellite {
  position: absolute; width: 10px; height: 10px;
  background: var(--gold); border-radius: 50%;
  top: 50%; left: 50%; margin-top: -5px; margin-left: -5px;
  transform-origin: 0 0;
  animation: gf-orbit1 8s linear infinite;
  box-shadow: 0 0 12px rgba(240,165,0,0.8);
}
.gf-satellite2 {
  position: absolute; width: 7px; height: 7px;
  background: rgba(255,255,255,0.9); border-radius: 50%;
  top: 50%; left: 50%; margin-top: -3.5px; margin-left: -3.5px;
  transform-origin: 0 0;
  animation: gf-orbit2 13s linear infinite reverse;
  box-shadow: 0 0 8px rgba(255,255,255,0.6);
}
@keyframes gf-orbit1 {
  from { transform: rotate(0deg) translateX(115px) rotate(0deg); }
  to   { transform: rotate(360deg) translateX(115px) rotate(-360deg); }
}
@keyframes gf-orbit2 {
  from { transform: rotate(0deg) translateX(170px) rotate(0deg); }
  to   { transform: rotate(360deg) translateX(170px) rotate(-360deg); }
}

.gf-core {
  position: absolute; top: 50%; left: 50%;
  width: 52px; height: 52px; border-radius: 50%;
  transform: translate(-50%,-50%);
  background: radial-gradient(circle at 35% 35%, var(--gold-light), var(--gold));
  box-shadow: 0 0 40px rgba(240,165,0,0.7), 0 0 80px rgba(240,165,0,0.3);
  animation: core-breathe 3s ease-in-out infinite;
}
@keyframes core-breathe {
  0%,100% { box-shadow: 0 0 36px rgba(240,165,0,0.7), 0 0 72px rgba(240,165,0,0.3); }
  50%      { box-shadow: 0 0 56px rgba(240,165,0,0.9), 0 0 110px rgba(240,165,0,0.45); }
}

/* Hero content layout */
.hero-content {
  position: relative; z-index: 2;
  display: grid;
  grid-template-columns: 1fr;
  gap: 48px;
  padding: 80px 32px 120px;
  max-width: 680px;
}
@media (min-width: 900px) { .hero-content { max-width: var(--max-w); } }

.hero-eyebrow {
  display: inline-flex; align-items: center; gap: 12px;
  font-size: 11px; font-weight: 700; letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--gold-light); margin-bottom: -16px;
}
.eyebrow-line {
  display: block; width: 32px; height: 1.5px;
  background: var(--gold-light); border-radius: 2px;
}

.hero-title {
  display: flex; flex-direction: column; gap: 10px;
}
.hero-title-en {
  font-size: clamp(2.8rem, 7vw, 5.5rem);
  font-weight: 900; font-family: 'Inter',sans-serif;
  color: rgba(255,255,255,0.10);
  letter-spacing: -0.02em; line-height: 1;
  position: absolute;
  top: 80px; left: 32px;
  pointer-events: none; user-select: none;
}
@media (max-width: 640px) { .hero-title-en { font-size: 2.8rem; } }

.hero-title-ja {
  font-size: clamp(2rem, 4.5vw, 3.4rem);
  font-weight: 800; line-height: 1.28; letter-spacing: -0.01em;
  color: #fff;
  border-left: 4px solid var(--gold);
  padding-left: 20px;
  margin-top: 56px;
}
.hero-title-ja em {
  font-style: normal;
  color: var(--gold-light);
}

.hero-subtitle {
  font-size: 1.05rem; line-height: 1.9;
  color: rgba(255,255,255,0.78);
  max-width: 560px;
}
.pc-only { display: none; }
@media (min-width: 768px) { .pc-only { display: inline; } }

/* Hero actions */
.hero-actions {
  display: flex; flex-wrap: wrap; gap: 14px; align-items: center;
}

/* Hero stats strip */
.hero-stats {
  display: flex; flex-wrap: wrap; gap: 0;
  background: rgba(10,20,60,0.45);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: var(--r-lg);
  padding: 24px 32px;
  width: fit-content;
}
.stat-item {
  display: flex; flex-direction: column; align-items: center; gap: 2px;
  padding: 0 28px;
}
.stat-item:first-child { padding-left: 0; }
.stat-item:last-child  { padding-right: 0; }
.stat-num {
  font-size: 2rem; font-weight: 900; font-family: 'Inter',sans-serif;
  color: #fff; line-height: 1;
}
.stat-num i { font-size: 1rem; font-style: normal; color: var(--gold-light); }
.stat-label { font-size: 11px; color: rgba(255,255,255,0.60); font-weight: 500; white-space: nowrap; }
.stat-sep { width: 1px; background: rgba(255,255,255,0.18); margin: 6px 0; }

/* Vertical brand text */
.hero-brand-vert {
  display: none;
  position: absolute; right: 28px; top: 50%;
  transform: translateY(-50%);
  writing-mode: vertical-rl; text-orientation: mixed;
  font-size: 9px; font-weight: 700; letter-spacing: 0.25em;
  color: rgba(255,255,255,0.18); text-transform: uppercase;
  gap: 12px; flex-direction: column; align-items: center;
  z-index: 3;
}
@media (min-width: 1280px) { .hero-brand-vert { display: flex; } }
.hbv-sep { font-size: 7px; color: rgba(240,165,0,0.45); }

/* Scroll cue */
.hero-scroll-cue {
  display: none;
  position: absolute; bottom: 100px; left: 50%;
  transform: translateX(-50%);
  flex-direction: column; align-items: center; gap: 8px;
  font-size: 9px; letter-spacing: 0.2em; color: rgba(255,255,255,0.35);
  text-transform: uppercase; z-index: 3;
}
@media (min-width: 768px) { .hero-scroll-cue { display: flex; } }
.hsc-line {
  width: 1px; height: 48px;
  background: linear-gradient(to bottom, transparent, rgba(240,165,0,0.6), transparent);
  animation: hsc-flow 2s ease-in-out infinite;
}
@keyframes hsc-flow {
  0%,100% { transform: scaleY(0.6); opacity: 0.5; }
  50%      { transform: scaleY(1);   opacity: 1; }
}

/* Hero wave bottom */
.hero-wave {
  position: absolute; bottom: 0; left: 0; right: 0; z-index: 2;
}
.hero-wave svg { width: 100%; display: block; }

/* ─────────────────────────
   PARTNERS STRIP
───────────────────────── */
.partners-section {
  background: var(--white);
  padding: 40px 0;
  border-bottom: 1px solid var(--gray-200);
}
.partners-label {
  text-align: center; font-size: 11px; font-weight: 700;
  letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--text-muted); margin-bottom: 24px;
}
.partners-track-wrap {
  overflow: hidden; position: relative;
  mask-image: linear-gradient(to right, transparent 0%, black 8%, black 92%, transparent 100%);
}
.partners-track {
  display: flex;
  width: max-content;
  will-change: transform;
  animation: partners-scroll 30s linear infinite;
}
.partners-track:hover { animation-play-state: paused; }
@keyframes partners-scroll {
  0%   { transform: translateX(0); }
  100% { transform: translateX(-25%); }
}
.partner-item {
  display: flex; align-items: center;
  padding: 0 40px; white-space: nowrap;
  transition: opacity var(--ease);
}
/* 統一ロゴスタイル */
.partner-logo-unified {
  height: 40px;
  width: auto;
  max-width: 200px;
  object-fit: contain;
  opacity: 1;
  filter: none;
  transition: opacity 0.3s ease;
}
.partner-logo-wide {
  height: 44px;
  max-width: 240px;
}
.partner-item:hover .partner-logo-unified {
  opacity: 0.8;
}

/* ─────────────────────────
   PAIN POINTS
───────────────────────── */
.pain-section { background: var(--gray-50); }

.pain-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
  margin-bottom: 48px;
}
.pain-card {
  background: var(--white);
  border-radius: var(--r-xl);
  padding: 36px 32px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--gray-200);
  transition: all var(--ease);
  position: relative; overflow: hidden;
}
.pain-card::before {
  content: '';
  position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: linear-gradient(90deg, var(--blue), var(--cyan));
  opacity: 0; transition: opacity var(--ease);
}
.pain-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: var(--blue-mid);
}
.pain-card:hover::before { opacity: 1; }

.pain-icon {
  width: 56px; height: 56px; border-radius: var(--r-md);
  background: var(--blue-pale); color: var(--blue);
  display: flex; align-items: center; justify-content: center;
  font-size: 22px; margin-bottom: 20px;
  transition: all var(--ease);
}
.pain-card:hover .pain-icon {
  background: var(--blue); color: #fff;
  transform: scale(1.08);
}
.pain-card h3 {
  font-size: 1.05rem; font-weight: 700; margin-bottom: 10px; color: var(--text-base);
}
.pain-card p { font-size: 0.9rem; color: var(--text-sub); line-height: 1.75; }

.pain-cta { text-align: center; margin-top: 16px; }
.pain-cta p { font-size: 1rem; color: var(--text-sub); margin-bottom: 20px; }

/* ─────────────────────────
   SERVICES — dark navy bg
───────────────────────── */
.services-section { background: var(--dark); position: relative; }
.bg-dark-section  { background: var(--dark); }

/* subtle mesh overlay for dark sections */
.services-section::before {
  content: '';
  position: absolute; inset: 0;
  background-image: radial-gradient(circle, rgba(255,255,255,0.04) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
}

/* Orbit decoration */
.section-orbit {
  position: absolute; top: 60px; right: 60px;
  width: 200px; height: 200px; pointer-events: none; opacity: 0.4;
}
.orbit-ring {
  position: absolute; top: 50%; left: 50%;
  border-radius: 50%; border: 1px solid rgba(255,255,255,0.18);
  transform: translate(-50%,-50%);
}
.or1 { width: 80px; height: 80px; }
.or2 { width: 160px; height: 160px; border-color: rgba(240,165,0,0.25); }
.orbit-dot {
  position: absolute; top: 50%; left: 50%;
  width: 8px; height: 8px; margin: -4px;
  background: var(--gold); border-radius: 50%;
  animation: gf-orbit1 5s linear infinite;
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
  position: relative; z-index: 1;
}

/* 4枚カード専用: 2×2グリッド */
.services-grid-4 {
  grid-template-columns: repeat(2, 1fr);
}
@media (max-width: 768px) {
  .services-grid-4 { grid-template-columns: 1fr; }
}
.service-card {
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.10);
  border-radius: var(--r-xl);
  padding: 36px 32px;
  transition: all var(--ease);
  position: relative; overflow: hidden;
}
.service-card::before {
  content: '';
  position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: linear-gradient(90deg, var(--gold), var(--gold-light));
  opacity: 0; transition: opacity var(--ease);
}
.service-card:hover {
  background: rgba(255,255,255,0.09);
  border-color: rgba(240,165,0,0.35);
  transform: translateY(-5px);
  box-shadow: 0 20px 60px rgba(0,0,0,0.3);
}
.service-card:hover::before { opacity: 1; }

.service-num {
  font-size: 12px; font-weight: 800; letter-spacing: 0.1em;
  color: var(--gold); margin-bottom: 16px; font-family: 'Inter',sans-serif;
}
.service-icon {
  width: 54px; height: 54px; border-radius: var(--r-md);
  background: rgba(240,165,0,0.12); color: var(--gold);
  display: flex; align-items: center; justify-content: center;
  font-size: 22px; margin-bottom: 20px;
  transition: all var(--ease);
}
.service-card:hover .service-icon { background: var(--gold); color: var(--dark); transform: scale(1.08); }
.service-card h3 { font-size: 1.1rem; font-weight: 700; color: #fff; margin-bottom: 12px; }
.service-card p  { font-size: 0.88rem; color: rgba(255,255,255,0.65); line-height: 1.75; margin-bottom: 18px; }

.service-features { display: flex; flex-direction: column; gap: 7px; margin-bottom: 24px; }
.service-features li {
  display: flex; align-items: center; gap: 8px;
  font-size: 0.82rem; color: rgba(255,255,255,0.6);
}
.service-features li i { color: var(--gold); font-size: 11px; flex-shrink: 0; }

.service-link {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 13px; font-weight: 600; color: var(--gold);
  transition: gap var(--ease);
}
.service-link:hover { gap: 10px; }

/* ─────────────────────────
   NUMBERS (STRENGTHS)
───────────────────────── */
.strengths-section { background: var(--white); }

.numbers-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 28px;
}
.number-card {
  background: var(--white);
  border-radius: var(--r-xl);
  padding: 44px 32px 36px;
  text-align: center;
  border: 1px solid var(--gray-200);
  box-shadow: var(--shadow-sm);
  position: relative; overflow: hidden;
  transition: all var(--ease);
}
.number-card::before {
  content: '';
  position: absolute; top: 0; left: 0; right: 0; height: 4px;
  background: linear-gradient(90deg, var(--blue), var(--cyan));
}
.number-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: var(--blue-mid); }

.number-ring { display: none; }

.number-value {
  font-size: 3.2rem; font-weight: 900; font-family: 'Inter',sans-serif;
  color: var(--blue); line-height: 1; margin-bottom: 10px;
}
.number-value span { font-size: 1.5rem; color: var(--blue-light); }
.number-label { font-size: 0.9rem; font-weight: 700; color: var(--text-base); margin-bottom: 8px; }
.number-desc  { font-size: 0.8rem; color: var(--text-muted); }

/* ─────────────────────────
   SOLUTIONS — dark gradient
───────────────────────── */
.solutions-section {
  background: linear-gradient(140deg, #0d1e3a 0%, #1352a0 100%);
  position: relative;
}
.solutions-section::before {
  content: '';
  position: absolute; inset: 0;
  background-image: 
    linear-gradient(rgba(255,255,255,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.04) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
}

.solutions-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 24px;
  position: relative; z-index: 1;
}
.solution-card {
  background: rgba(255,255,255,0.07);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: var(--r-xl);
  padding: 40px 32px;
  transition: all var(--ease);
}
.solution-card:hover {
  background: rgba(255,255,255,0.12);
  border-color: rgba(255,255,255,0.25);
  transform: translateY(-5px);
  box-shadow: 0 20px 60px rgba(0,0,0,0.35);
}
.solution-icon {
  width: 58px; height: 58px; border-radius: var(--r-md);
  background: rgba(26,111,212,0.30); color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-size: 24px; margin-bottom: 22px;
  transition: all var(--ease);
}
.solution-card:hover .solution-icon { background: var(--blue); transform: scale(1.08); }
.solution-card h3 { font-size: 1.05rem; font-weight: 700; color: #fff; margin-bottom: 12px; }
.solution-card p  { font-size: 0.88rem; color: rgba(255,255,255,0.65); line-height: 1.8; margin-bottom: 24px; }
.solution-link {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 13px; font-weight: 600; color: var(--cyan-light);
  transition: gap var(--ease);
}
.solution-link:hover { gap: 10px; }

/* ─────────────────────────
   CASE STUDIES
───────────────────────── */
.cases-section { background: var(--gray-50); }

.cases-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 28px;
}
.case-card {
  background: var(--white);
  border-radius: var(--r-xl);
  padding: 36px 32px;
  border: 1px solid var(--gray-200);
  box-shadow: var(--shadow-sm);
  border-left: 4px solid var(--blue);
  transition: all var(--ease);
}
.case-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-lg); border-left-color: var(--gold); }

/* ── 準備中カード ── */
.case-card-preparing {
  border-left-color: var(--gray-300);
  background: var(--white);
  position: relative;
  display: flex;
  flex-direction: column;
  min-height: 220px;
  align-items: center;
  justify-content: center;
  text-align: center;
}
.case-card-preparing:hover {
  border-left-color: var(--blue);
}
.case-preparing-badge {
  position: absolute;
  top: 16px;
  right: 16px;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 4px 12px;
  border-radius: var(--r-full);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.06em;
  background: #fef9ec;
  color: var(--gold-dark, #b45309);
  border: 1px solid #fcd34d;
}
.case-preparing-body {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  padding: 24px 12px;
}
.case-preparing-icon {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--blue-pale);
  color: var(--blue);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
}
.case-preparing-body h3 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-base);
  margin: 0;
}
.case-preparing-body p {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin: 0;
}

.case-header {
  display: flex; justify-content: space-between; align-items: center; margin-bottom: 20px;
}
.case-tag {
  display: inline-flex; align-items: center;
  padding: 4px 14px; border-radius: var(--r-full);
  font-size: 11px; font-weight: 700; letter-spacing: 0.08em;
  background: var(--blue-pale); color: var(--blue);
  border: 1px solid var(--blue-mid);
}
.case-icon {
  width: 42px; height: 42px; border-radius: var(--r-md);
  background: var(--blue-pale); color: var(--blue);
  display: flex; align-items: center; justify-content: center; font-size: 18px;
}
.case-card h3 { font-size: 1rem; font-weight: 700; color: var(--text-base); margin-bottom: 12px; line-height: 1.5; }
.case-card p  { font-size: 0.875rem; color: var(--text-sub); line-height: 1.8; margin-bottom: 24px; }

.case-result { display: flex; gap: 24px; }
.case-result-item { display: flex; flex-direction: column; gap: 3px; }
.result-num {
  font-size: 1.75rem; font-weight: 900; font-family: 'Inter',sans-serif;
  color: var(--blue); line-height: 1;
}
.result-label { font-size: 11px; color: var(--text-muted); font-weight: 600; }

/* ─────────────────────────
   24/365 OPS
───────────────────────── */
.ops-section { background: var(--dark); }

.ops-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px; align-items: center;
}
@media (max-width: 900px) { .ops-inner { grid-template-columns: 1fr; gap: 48px; } }

.ops-list { display: flex; flex-direction: column; gap: 14px; margin: 28px 0 32px; }
.ops-list li {
  display: flex; align-items: center; gap: 12px;
  font-size: 0.93rem; color: rgba(255,255,255,0.80);
}
.ops-list li i { color: var(--gold); font-size: 16px; flex-shrink: 0; }

.ops-cards {
  display: grid; grid-template-columns: 1fr 1fr; gap: 18px;
}
.ops-feature-card {
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.10);
  border-radius: var(--r-lg);
  padding: 28px 24px;
  transition: all var(--ease);
}
.ops-feature-card:hover {
  background: rgba(255,255,255,0.10);
  border-color: rgba(240,165,0,0.30);
  transform: translateY(-3px);
}
.ops-card-icon {
  width: 46px; height: 46px; border-radius: var(--r-md);
  background: rgba(240,165,0,0.13); color: var(--gold);
  display: flex; align-items: center; justify-content: center;
  font-size: 20px; margin-bottom: 14px;
}
.ops-feature-card h4 { font-size: 0.93rem; font-weight: 700; color: #fff; margin-bottom: 8px; }
.ops-feature-card p  { font-size: 0.8rem; color: rgba(255,255,255,0.55); line-height: 1.7; }

/* ─────────────────────────
   PROCESS
───────────────────────── */
.process-section { background: var(--white); }

.process-track { position: relative; }
.process-line { display: none; }
.process-steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px; position: relative; z-index: 1;
}
@media (max-width: 768px) { .process-steps { grid-template-columns: 1fr 1fr 1fr; } }
@media (max-width: 480px) { .process-steps { grid-template-columns: 1fr; } }

.process-step { display: flex; flex-direction: column; align-items: center; text-align: center; }
.step-dot {
  width: 48px; height: 48px; border-radius: 50%;
  background: var(--blue); color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-size: 13px; font-weight: 800; font-family: 'Inter',sans-serif;
  margin-bottom: 20px;
  box-shadow: 0 0 0 6px var(--blue-pale);
  position: relative; z-index: 1;
}
.step-body h3 { font-size: 1rem; font-weight: 700; color: var(--text-base); margin-bottom: 8px; }
.step-body p  { font-size: 0.85rem; color: var(--text-sub); line-height: 1.7; }

/* ─────────────────────────
   FAQ
───────────────────────── */
.faq-section { background: var(--gray-50); }

.faq-list { display: flex; flex-direction: column; gap: 12px; max-width: 800px; margin: 0 auto; }
.faq-item {
  background: var(--white);
  border-radius: var(--r-lg);
  border: 1px solid var(--gray-200);
  overflow: hidden;
  transition: box-shadow var(--ease);
}
.faq-item:hover { box-shadow: var(--shadow-md); }

.faq-question {
  width: 100%; display: flex; align-items: center; justify-content: space-between;
  padding: 22px 28px; background: none; border: none;
  font-size: 0.96rem; font-weight: 600; color: var(--text-base);
  text-align: left; gap: 16px;
  transition: color var(--ease);
}
.faq-question:hover { color: var(--blue); }
.faq-question[aria-expanded="true"] { color: var(--blue); }

.faq-icon {
  flex-shrink: 0; font-size: 14px; color: var(--blue);
  transition: transform var(--ease);
}
.faq-question[aria-expanded="true"] .faq-icon { transform: rotate(45deg); }

.faq-answer {
  max-height: 0; overflow: hidden;
  transition: max-height 0.4s cubic-bezier(0,0,0.2,1), padding 0.4s;
  padding: 0 28px;
}
.faq-answer.open { max-height: 400px; padding-bottom: 22px; }
.faq-answer p { font-size: 0.88rem; color: var(--text-sub); line-height: 1.8; }

/* ─────────────────────────
   ABOUT
───────────────────────── */
.about-section { background: var(--white); }

.about-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px; align-items: center;
}
@media (max-width: 900px) { .about-inner { grid-template-columns: 1fr; gap: 48px; } }

.about-text {
  font-size: 0.93rem; color: var(--text-sub); line-height: 1.85; margin-bottom: 16px;
}

.about-info-grid {
  display: flex; flex-direction: column; gap: 0;
  border: 1px solid var(--gray-200);
  border-radius: var(--r-lg); overflow: hidden;
  margin-top: 32px;
}
.about-info-item {
  display: grid; grid-template-columns: 110px 1fr;
  padding: 14px 20px; gap: 16px; align-items: center;
  border-bottom: 1px solid var(--gray-200);
}
.about-info-item:last-child { border-bottom: none; }
.info-label  { font-size: 11px; font-weight: 700; color: var(--text-muted); letter-spacing: 0.05em; }
.info-value  { font-size: 0.88rem; color: var(--text-base); }
.info-value a { color: var(--blue); }
.info-value a:hover { text-decoration: underline; }

/* GCI gravity visual */
.about-gravity-visual {
  position: relative; width: 280px; height: 280px;
  margin: 0 auto 36px;
}
.ag-ring {
  position: absolute; top: 50%; left: 50%;
  border-radius: 50%; transform: translate(-50%,-50%);
  border: 2px solid;
}
.ag-r1 { width: 90px;  height: 90px;  border-color: rgba(26,111,212,0.3); }
.ag-r2 { width: 170px; height: 170px; border-color: rgba(26,111,212,0.15); }
.ag-r3 { width: 260px; height: 260px; border-color: rgba(26,111,212,0.08); }

.ag-core {
  position: absolute; top: 50%; left: 50%;
  width: 72px; height: 72px;
  transform: translate(-50%,-50%);
  background: linear-gradient(135deg, var(--blue), var(--blue-dark));
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 0 32px rgba(26,111,212,0.45);
}
.ag-core-text { font-size: 16px; font-weight: 900; color: #fff; font-family: 'Inter',sans-serif; }

.ag-satellite {
  position: absolute; width: 36px; height: 36px;
  border-radius: 50%;
  background: var(--blue-pale); color: var(--blue);
  display: flex; align-items: center; justify-content: center;
  font-size: 14px; top: 50%; left: 50%;
  margin: -18px;
}
.s1 { animation: ag-orbit1 10s linear infinite; }
.s2 { animation: ag-orbit2 14s linear infinite reverse; }
.s3 { animation: ag-orbit3 18s linear infinite; }
@keyframes ag-orbit1 { from { transform: rotate(0deg)   translateX(85px) rotate(0deg); }   to { transform: rotate(360deg)  translateX(85px) rotate(-360deg); } }
@keyframes ag-orbit2 { from { transform: rotate(120deg) translateX(85px) rotate(-120deg); } to { transform: rotate(480deg)  translateX(85px) rotate(-480deg); } }
@keyframes ag-orbit3 { from { transform: rotate(240deg) translateX(85px) rotate(-240deg); } to { transform: rotate(600deg)  translateX(85px) rotate(-600deg); } }

.about-value-list { display: flex; flex-direction: column; gap: 20px; }
.value-item { display: flex; align-items: flex-start; gap: 18px; }
.value-icon {
  width: 46px; height: 46px; border-radius: var(--r-md);
  background: var(--blue-pale); color: var(--blue);
  display: flex; align-items: center; justify-content: center;
  font-size: 18px; flex-shrink: 0;
}
.value-item h4 { font-size: 0.95rem; font-weight: 700; margin-bottom: 4px; }
.value-item p  { font-size: 0.83rem; color: var(--text-sub); line-height: 1.6; }

/* ─────────────────────────
   CTA SECTION
───────────────────────── */
.cta-section {
  background: linear-gradient(140deg, #0c1f4a 0%, #1a4492 55%, #1e5cbf 100%);
  position: relative; overflow: hidden; padding: 100px 0;
}
.cta-canvas {
  position: absolute; inset: 0; width: 100%; height: 100%;
  pointer-events: none; z-index: 0;
}
.cta-content { position: relative; z-index: 1; text-align: center; }

.cta-emblem {
  width: 76px; height: 76px; border-radius: 50%;
  background: rgba(240,165,0,0.15);
  border: 2px solid rgba(240,165,0,0.4);
  display: flex; align-items: center; justify-content: center;
  font-size: 28px; color: var(--gold);
  margin: 0 auto 32px; position: relative;
}
.cta-orbit-ring {
  position: absolute; width: 110px; height: 110px;
  border-radius: 50%; border: 1px solid rgba(240,165,0,0.25);
  top: 50%; left: 50%; transform: translate(-50%,-50%);
  animation: gf-pulse 3s ease-in-out infinite;
}
.cta-title {
  font-size: clamp(1.75rem, 4vw, 2.75rem);
  font-weight: 800; color: #fff; margin-bottom: 18px;
}
.cta-subtitle { font-size: 1rem; color: rgba(255,255,255,0.72); line-height: 1.8; margin-bottom: 40px; }
.cta-actions { display: flex; flex-wrap: wrap; justify-content: center; gap: 16px; margin-bottom: 28px; }
.cta-note { font-size: 12px; color: rgba(255,255,255,0.45); display: flex; align-items: center; gap: 6px; justify-content: center; }

/* ─────────────────────────
   CONTACT
───────────────────────── */
.contact-section { background: var(--gray-50); }

.contact-inner {
  display: grid; grid-template-columns: 1fr 1.5fr; gap: 64px; align-items: start;
}
@media (max-width: 900px) { .contact-inner { grid-template-columns: 1fr; gap: 48px; } }

.contact-info-card {
  background: var(--white); border-radius: var(--r-xl);
  padding: 36px 32px; border: 1px solid var(--gray-200);
  box-shadow: var(--shadow-sm); margin-bottom: 20px;
}
.contact-info-card h3 { font-size: 1.05rem; font-weight: 700; margin-bottom: 24px; }

.contact-detail { display: flex; align-items: flex-start; gap: 16px; margin-bottom: 18px; }
.contact-detail-icon {
  width: 40px; height: 40px; border-radius: var(--r-md);
  background: var(--blue-pale); color: var(--blue);
  display: flex; align-items: center; justify-content: center; font-size: 16px; flex-shrink: 0;
}
.contact-detail-label { font-size: 11px; color: var(--text-muted); font-weight: 600; margin-bottom: 2px; display: block; }
.contact-detail a, .contact-detail span { font-size: 0.88rem; color: var(--text-base); }
.contact-detail a { color: var(--blue); }
.contact-detail a:hover { text-decoration: underline; }

.contact-note {
  display: flex; gap: 10px; align-items: flex-start;
  background: var(--blue-pale); border-radius: var(--r-md);
  padding: 14px 18px; margin-top: 20px;
}
.contact-note i { color: var(--blue); font-size: 15px; margin-top: 2px; flex-shrink: 0; }
.contact-note p { font-size: 0.83rem; color: var(--text-sub); line-height: 1.6; }

.contact-quick-cards { display: flex; flex-direction: column; gap: 14px; }
.quick-card {
  display: flex; align-items: center; gap: 16px;
  background: var(--white); border: 1px solid var(--gray-200);
  border-radius: var(--r-lg); padding: 18px 22px;
  box-shadow: var(--shadow-sm);
}
.quick-card i { font-size: 22px; color: var(--blue); }
.quick-card strong { display: block; font-size: 0.9rem; font-weight: 700; margin-bottom: 2px; }
.quick-card span  { font-size: 0.8rem; color: var(--text-muted); }

/* Form */
.contact-form-wrap {
  background: var(--white); border-radius: var(--r-xl);
  padding: 44px 40px; border: 1px solid var(--gray-200);
  box-shadow: var(--shadow-md);
}
.form-group { margin-bottom: 20px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
@media (max-width: 600px) { .form-row { grid-template-columns: 1fr; } }

.form-group label {
  display: block; font-size: 13px; font-weight: 600; color: var(--text-base);
  margin-bottom: 7px;
}
.required { color: var(--blue); }

.form-group input, .form-group select, .form-group textarea {
  width: 100%; padding: 12px 16px;
  border: 1.5px solid var(--gray-300);
  border-radius: var(--r-md); font-family: inherit;
  font-size: 14px; color: var(--text-base);
  background: var(--white);
  transition: border-color var(--ease), box-shadow var(--ease);
  outline: none;
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
  border-color: var(--blue);
  box-shadow: 0 0 0 3px rgba(26,111,212,0.12);
}
.form-group input.invalid, .form-group select.invalid, .form-group textarea.invalid {
  border-color: #ef4444;
  box-shadow: 0 0 0 3px rgba(239,68,68,0.10);
}
.form-group textarea { resize: vertical; min-height: 130px; }

.form-privacy { margin-bottom: 24px; }
.checkbox-label {
  display: flex; align-items: flex-start; gap: 10px;
  font-size: 13px; color: var(--text-sub); cursor: pointer;
}
.checkbox-label input[type="checkbox"] { width: 16px; height: 16px; margin-top: 2px; accent-color: var(--blue); }
.checkbox-label a { color: var(--blue); }
.checkbox-label a:hover { text-decoration: underline; }

.form-success { text-align: center; padding: 48px 24px; }
.success-icon { font-size: 56px; color: #22c55e; margin-bottom: 20px; }
.form-success h3 { font-size: 1.25rem; font-weight: 700; margin-bottom: 10px; }
.form-success p  { font-size: 0.9rem; color: var(--text-sub); }

/* ─────────────────────────
   FOOTER
───────────────────────── */
.site-footer { background: var(--dark); }

.footer-top { padding: 72px 0 48px; border-bottom: 1px solid rgba(255,255,255,0.08); }
.footer-inner { display: grid; grid-template-columns: 1fr 2fr; gap: 60px; }
@media (max-width: 768px) { .footer-inner { grid-template-columns: 1fr; gap: 40px; } }

.footer-logo { display: flex; align-items: center; gap: 10px; margin-bottom: 16px; }
.footer-emblem {
  width: 36px; height: 36px; border-radius: 9px;
  background: linear-gradient(135deg, var(--blue), var(--blue-dark));
  display: flex; align-items: center; justify-content: center;
  font-size: 15px; font-weight: 900; color: #fff; font-family: 'Inter',sans-serif;
}
.fe-orbit { display: none; }
.footer-tagline { font-size: 0.85rem; color: rgba(255,255,255,0.55); line-height: 1.75; margin-bottom: 18px; }
.footer-email {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 0.88rem; color: var(--gold-light);
  transition: color var(--ease);
}
.footer-email:hover { color: var(--gold); }

.footer-links { display: grid; grid-template-columns: repeat(3,1fr); gap: 32px; }
@media (max-width: 600px) { .footer-links { grid-template-columns: 1fr 1fr; gap: 24px; } }

.footer-col h4 { font-size: 12px; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase; color: rgba(255,255,255,0.85); margin-bottom: 16px; }
.footer-col ul { display: flex; flex-direction: column; gap: 10px; }
.footer-col a {
  font-size: 0.83rem; color: rgba(255,255,255,0.50);
  transition: color var(--ease);
}
.footer-col a:hover { color: rgba(255,255,255,0.90); }

.footer-bottom {
  padding: 20px 0;
  display: flex; align-items: center;
}
.footer-bottom .container {
  display: flex; justify-content: space-between; align-items: center; width: 100%;
}
.footer-bottom p { font-size: 12px; color: rgba(255,255,255,0.35); }
.footer-bottom a { font-size: 12px; color: rgba(255,255,255,0.40); transition: color var(--ease); }
.footer-bottom a:hover { color: rgba(255,255,255,0.75); }

/* ─────────────────────────
   BACK TO TOP
───────────────────────── */
.back-to-top {
  position: fixed; bottom: 90px; right: 24px; z-index: 100;
  width: 48px; height: 48px; border-radius: 50%;
  background: var(--blue); color: #fff; border: none;
  display: flex; align-items: center; justify-content: center;
  font-size: 16px; opacity: 0; pointer-events: none;
  transition: all var(--ease);
  box-shadow: var(--shadow-blue);
}
.back-to-top.visible { opacity: 1; pointer-events: auto; }
.back-to-top:hover   { background: var(--blue-dark); transform: translateY(-3px); }

/* ─────────────────────────
   MOBILE CTA BAR
───────────────────────── */


/* ─────────────────────────
   AOS ANIMATIONS
───────────────────────── */
[data-aos] { transition: opacity 0.6s ease, transform 0.6s ease; }
[data-aos].aos-animate { opacity: 1; transform: none; }

/* ─────────────────────────
   RESPONSIVE
───────────────────────── */
@media (max-width: 900px) {
  .section-padding { padding: 72px 0; }
  .hero-content { padding: 64px 24px 100px; }
  .hero-stats { flex-wrap: wrap; gap: 12px; justify-content: center; }
  .stat-item { padding: 0 18px; }
  .stat-sep { display: none; }
}

@media (max-width: 768px) {
  .section-padding { padding: 56px 0; }
  .section-header  { margin-bottom: 40px; }
  .numbers-grid    { grid-template-columns: repeat(2,1fr); }
  .ops-cards       { grid-template-columns: 1fr; }
  .contact-form-wrap { padding: 28px 22px; }
  .process-line    { display: none; }
}

@media (max-width: 480px) {
  .container { padding: 0 18px; }
  .hero-title-ja { font-size: 1.75rem; }
  .hero-actions { flex-direction: column; }
  .hero-actions .btn { width: 100%; justify-content: center; }
  .numbers-grid { grid-template-columns: 1fr; }
  .footer-links { grid-template-columns: 1fr; }
  .cta-actions  { flex-direction: column; }
  .cta-actions .btn { width: 100%; justify-content: center; }
}