/* ==========================================================
   AI BPO - Landing Page Styles
   Tone: BtoB / Trust / Calm / Consulting
   ========================================================== */

:root {
  /* Colors - Base */
  --c-bg: #FFFFFF;
  --c-bg-soft: #EEF2F8;      /* 少し色味のあるブルーグレー */
  --c-bg-soft-2: #F4F6FB;    /* もう一段薄いトーン */
  --c-bg-muted: #FAFBFC;

  /* Colors - Border */
  --c-border: #DDE3EC;
  --c-border-soft: #E8ECF3;

  /* Colors - Text */
  --c-text: #0F1A2E;
  --c-text-sub: #4F5A72;
  --c-text-mute: #8892A6;

  /* Colors - Accent (落ち着いたブルー) */
  --c-primary: #2C5BD8;
  --c-primary-hover: #1F49BC;
  --c-primary-soft: #E4ECF9;
  --c-primary-soft-2: #EEF3FB;

  /* Colors - Navy (より重みのある濃紺) */
  --c-navy: #1A2748;
  --c-navy-2: #2A3A5C;

  /* Colors - Sub Accent (ポイントで使う色味) */
  --c-green: #2D8467;
  --c-green-soft: #E5F1EB;
  --c-amber: #E89A3C;       /* メインのオレンジアクセント */
  --c-amber-deep: #C97A1F;
  --c-amber-soft: #FCEFD9;
  --c-amber-soft-2: #FEF8EC;

  /* Colors - Blue Gray (consulting feel) */
  --c-blue-gray: #4A5878;
  --c-blue-gray-soft: #F2F4F8;

  /* Typography */
  --font-sans: 'Inter', 'Noto Sans JP', -apple-system, BlinkMacSystemFont, 'Hiragino Sans', sans-serif;

  /* Layout */
  --max-w: 1120px;
  --max-w-narrow: 880px;
  --section-pad-y: 120px;
  --header-h: 72px;

  /* Radius */
  --r-sm: 6px;
  --r-md: 8px;
  --r-lg: 12px;
  --r-xl: 16px;

  /* Shadow */
  --shadow-sm: 0 1px 2px rgba(15, 26, 46, 0.04);
  --shadow-md: 0 4px 16px rgba(15, 26, 46, 0.06);
  --shadow-lg: 0 12px 32px rgba(44, 91, 216, 0.08);
}

/* ----- Reset ----- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font-sans);
  color: var(--c-text);
  background: var(--c-bg);
  line-height: 1.75;
  font-size: 16px;
  font-weight: 400;
  letter-spacing: 0.01em;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; background: none; border: none; color: inherit; }
ul { list-style: none; }
h1, h2, h3, h4 { line-height: 1.5; letter-spacing: 0.005em; }

/* ----- Layout ----- */
.container {
  width: 100%;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 32px;
}

.sp-only { display: none; }

/* ==========================================================
   Buttons
   ========================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 44px;
  padding: 0 22px;
  border-radius: var(--r-md);
  border: 1px solid transparent;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.02em;
  white-space: nowrap;
  transition: background-color 0.18s ease, color 0.18s ease,
              border-color 0.18s ease, box-shadow 0.18s ease,
              transform 0.18s ease;
  cursor: pointer;
}

.btn-primary {
  background: var(--c-primary);
  color: #fff;
  box-shadow: 0 1px 0 rgba(15,26,46,0.04), inset 0 1px 0 rgba(255,255,255,0.08);
}
.btn-primary:hover {
  background: var(--c-primary-hover);
  box-shadow: var(--shadow-lg);
  transform: translateY(-1px);
}

.btn-outline {
  background: #fff;
  color: var(--c-text);
  border-color: var(--c-border);
}
.btn-outline:hover {
  border-color: var(--c-primary);
  color: var(--c-primary);
  background: var(--c-primary-soft-2);
}

.btn-ghost {
  background: transparent;
  color: var(--c-text);
  border-color: transparent;
}
.btn-ghost:hover { color: var(--c-primary); }

.btn-lg {
  height: 56px;
  padding: 0 30px;
  font-size: 15px;
  border-radius: var(--r-md);
}

.btn-block { width: 100%; }

/* ==========================================================
   Header
   ========================================================== */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: saturate(180%) blur(16px);
  -webkit-backdrop-filter: saturate(180%) blur(16px);
  border-bottom: 1px solid transparent;
  transition: background-color 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
}
.site-header.is-scrolled {
  background: rgba(255, 255, 255, 0.96);
  border-bottom-color: var(--c-border);
  box-shadow: 0 1px 0 rgba(15,26,46,0.02);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  height: var(--header-h);
}

.logo {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
  line-height: 0;
}
.logo-img {
  display: block;
  height: 32px;
  width: auto;
}

.nav ul {
  display: flex;
  align-items: center;
  gap: 36px;
}
.nav a {
  font-size: 14px;
  font-weight: 500;
  color: var(--c-text-sub);
  transition: color 0.18s ease;
}
.nav a:hover { color: var(--c-primary); }

.header-cta {
  display: flex;
  align-items: center;
  gap: 8px;
}

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 40px;
  height: 40px;
  gap: 5px;
  margin-right: -8px;
}
.hamburger span {
  display: block;
  width: 22px;
  height: 1.8px;
  background: var(--c-text);
  border-radius: 2px;
  transition: transform 0.25s ease, opacity 0.25s ease;
}
.hamburger.is-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.is-open span:nth-child(2) { opacity: 0; }
.hamburger.is-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.mobile-menu {
  display: none;
  border-top: 1px solid var(--c-border);
  background: #fff;
  padding: 20px 24px 28px;
}
.mobile-menu.is-open { display: block; }
.mobile-menu ul {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-bottom: 16px;
}
.mobile-menu ul a {
  display: block;
  padding: 14px 8px;
  font-size: 15px;
  font-weight: 500;
  color: var(--c-text);
  border-bottom: 1px solid var(--c-border-soft);
}
.mobile-cta { display: flex; flex-direction: column; gap: 10px; }
.mobile-cta .btn {
  height: 50px;
  font-size: 15px;
}


/* ==========================================================
   Hero
   ========================================================== */
.hero {
  position: relative;
  padding: calc(var(--header-h) + 100px) 0 130px;
  overflow: hidden;
  background:
    linear-gradient(180deg, #F6F8FC 0%, #EEF2F9 100%);
}

/* Decorative background — calm, structured, not techy */
.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
}

/* Soft grid pattern (very subtle) */
.hero-bg::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(26, 39, 72, 0.04) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(26, 39, 72, 0.04) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: linear-gradient(180deg, rgba(0,0,0,0.6) 0%, transparent 80%);
  -webkit-mask-image: linear-gradient(180deg, rgba(0,0,0,0.6) 0%, transparent 80%);
  opacity: 0.5;
}

/* Right-side abstract illustration */
.hero-illust {
  position: absolute;
  top: 80px;
  right: -80px;
  width: 640px;
  height: 640px;
  z-index: 0;
  pointer-events: none;
  opacity: 0.95;
}
/* Left-side gradient orb */
.hero-bg::after {
  content: "";
  position: absolute;
  left: -180px;
  bottom: -120px;
  width: 540px;
  height: 540px;
  background: radial-gradient(circle, rgba(74, 88, 120, 0.10) 0%, rgba(74, 88, 120, 0) 60%);
  border-radius: 50%;
}

.hero .container { position: relative; z-index: 1; }

.hero-inner {
  max-width: var(--max-w-narrow);
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--c-primary);
  background: var(--c-primary-soft);
  padding: 8px 16px;
  border-radius: 100px;
  margin-bottom: 32px;
}
.tag-dot {
  display: inline-block;
  width: 6px;
  height: 6px;
  background: var(--c-primary);
  border-radius: 50%;
  position: relative;
}
.tag-dot::after {
  content: "";
  position: absolute;
  inset: -3px;
  border-radius: 50%;
  background: var(--c-primary);
  opacity: 0.25;
  animation: pulse 2.4s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { transform: scale(1); opacity: 0.25; }
  50% { transform: scale(1.4); opacity: 0; }
}

.hero-title {
  font-size: clamp(34px, 5vw, 54px);
  font-weight: 700;
  line-height: 1.45;
  letter-spacing: 0.005em;
  color: var(--c-text);
  margin-bottom: 28px;
}
.hero-title-accent {
  color: var(--c-primary);
  position: relative;
  display: inline-block;
  padding: 0 4px;
  z-index: 1;
}
/* マーカー風ハイライト */
.hero-title-accent::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0.08em;
  height: 0.32em;
  background: var(--c-primary-soft);
  z-index: -1;
  border-radius: 2px;
}

.hero-sub {
  font-size: clamp(15px, 1.4vw, 18px);
  line-height: 1.95;
  color: var(--c-text-sub);
  margin-bottom: 36px;
  font-weight: 500;
}

/* ----- Hero Voices (お悩み→解決の構造) ----- */
.hero-voices { margin-bottom: 44px; }

.voice-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  margin-bottom: 4px;
}

/* ----- Voice Card ----- */
.voice-card {
  position: relative;
  display: flex;
  align-items: stretch;
  background: #fff;
  border: 1px solid var(--c-border);
  border-radius: var(--r-lg);
  overflow: hidden;
  box-shadow: 0 4px 14px rgba(15, 26, 46, 0.05);
  transition: box-shadow 0.25s ease, transform 0.25s ease;
}
.voice-card:hover {
  box-shadow: 0 10px 26px rgba(232, 154, 60, 0.12);
  transform: translateY(-2px);
}

.voice-card-side {
  position: relative;
  flex-shrink: 0;
  width: 76px;
  background: linear-gradient(150deg, var(--c-amber-soft) 0%, var(--c-amber-soft-2) 100%);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 8px;
  border-right: 1px solid rgba(232, 154, 60, 0.18);
}
/* dotted texture on side */
.voice-card-side::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle, rgba(201, 122, 31, 0.22) 1px, transparent 1.4px);
  background-size: 10px 10px;
  opacity: 0.55;
  pointer-events: none;
}
/* corner accent */
.voice-card-side::after {
  content: "";
  position: absolute;
  top: 8px;
  right: 8px;
  width: 18px;
  height: 18px;
  border-top: 1.5px solid var(--c-amber);
  border-right: 1.5px solid var(--c-amber);
  opacity: 0.5;
}

.voice-quote-mark {
  position: relative;
  z-index: 1;
  width: 38px;
  height: 38px;
  background: #fff;
  color: var(--c-amber);
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 3px 10px rgba(201, 122, 31, 0.18);
  border: 1px solid rgba(232, 154, 60, 0.25);
}

.voice-card-label {
  position: relative;
  z-index: 1;
  font-family: 'Inter', sans-serif;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--c-amber-deep);
}

.voice-card-body {
  flex: 1;
  padding: 22px 26px;
  display: flex;
  align-items: center;
  min-width: 0;
  background:
    linear-gradient(180deg, rgba(255,255,255,1) 0%, rgba(252, 239, 217, 0.25) 100%);
}

.voice-text {
  font-size: 15px;
  font-weight: 500;
  line-height: 1.7;
  color: var(--c-text);
}
.voice-text strong {
  font-weight: 700;
  color: var(--c-text);
  background-image: linear-gradient(transparent 70%, var(--c-amber-soft) 70%);
}

/* ----- Voice Connector ----- */
.voice-connector {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 10px;
  margin: 16px 0 12px;
  color: var(--c-text-mute);
}
.voice-connector-line {
  display: block;
  height: 1px;
  width: 80px;
  background: linear-gradient(90deg, transparent, var(--c-border) 50%, transparent);
}
.voice-connector-icon {
  width: 28px;
  height: 28px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: #fff;
  border: 1px solid var(--c-border);
  border-radius: 50%;
  color: var(--c-text-sub);
  box-shadow: 0 2px 6px rgba(15, 26, 46, 0.06);
}

/* ----- Voice Answer ----- */
.voice-answer {
  position: relative;
  display: flex;
  align-items: stretch;
  background: #fff;
  border: 1px solid var(--c-border);
  border-radius: var(--r-lg);
  overflow: hidden;
  box-shadow: 0 8px 24px rgba(44, 91, 216, 0.10);
}

.voice-answer-side {
  position: relative;
  flex-shrink: 0;
  width: 96px;
  background:
    linear-gradient(135deg, var(--c-primary) 0%, #4577E5 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.voice-answer-side::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 30% 30%, rgba(255,255,255,0.20) 0%, transparent 50%),
    radial-gradient(circle at 80% 80%, rgba(255,255,255,0.12) 0%, transparent 50%);
}
.voice-answer-side::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle, rgba(255,255,255,0.18) 1px, transparent 1.4px);
  background-size: 12px 12px;
  opacity: 0.4;
  pointer-events: none;
}

.voice-answer-icon {
  position: relative;
  z-index: 1;
  width: 48px;
  height: 48px;
  background: rgba(255, 255, 255, 0.18);
  color: #fff;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1.5px solid rgba(255, 255, 255, 0.4);
  backdrop-filter: blur(4px);
}

.voice-answer-body {
  flex: 1;
  padding: 24px 30px;
  display: flex;
  align-items: center;
  background: linear-gradient(135deg, #FFFFFF 0%, var(--c-primary-soft-2) 100%);
  position: relative;
}
/* subtle line accent on right edge of answer body */
.voice-answer-body::after {
  content: "";
  position: absolute;
  top: 16px;
  right: 16px;
  width: 28px;
  height: 28px;
  border-top: 1.5px solid var(--c-primary);
  border-right: 1.5px solid var(--c-primary);
  opacity: 0.25;
}

.voice-answer-body p {
  font-size: 15px;
  font-weight: 500;
  line-height: 1.85;
  color: var(--c-text);
}
.voice-answer-body strong {
  color: var(--c-primary);
  font-weight: 700;
  background-image: linear-gradient(transparent 70%, var(--c-primary-soft) 70%);
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px 20px;
  margin-bottom: 44px;
}
.hero-cta-note {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: 13px;
  color: var(--c-text-sub);
  font-weight: 500;
}
.hero-cta-note svg { color: var(--c-primary); opacity: 0.7; }

.hero-points {
  display: flex;
  flex-wrap: wrap;
  gap: 28px 32px;
  padding-top: 28px;
  border-top: 1px solid var(--c-border-soft);
}
.hero-points li {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: var(--c-text);
  font-weight: 500;
}
.hero-points li svg {
  flex-shrink: 0;
  padding: 4px;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--c-green-soft);
  color: var(--c-green);
}


/* ==========================================================
   Section Common
   ========================================================== */
.section-head {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 72px;
}
.problems .section-head { max-width: 900px; }
.section-label {
  display: inline-block;
  font-family: 'Inter', sans-serif;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--c-primary);
  margin-bottom: 18px;
  position: relative;
  padding-left: 28px;
}
.section-label::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 20px;
  height: 1px;
  background: var(--c-primary);
}

.section-title {
  font-size: clamp(26px, 3.2vw, 38px);
  font-weight: 700;
  line-height: 1.5;
  color: var(--c-text);
  margin-bottom: 20px;
  letter-spacing: 0.01em;
}

.section-desc {
  font-size: 15px;
  line-height: 1.95;
  color: var(--c-text-sub);
}

/* ==========================================================
   Problems Section
   ========================================================== */
.problems {
  padding: var(--section-pad-y) 0;
  background: var(--c-bg-soft);
  position: relative;
  border-top: 1px solid var(--c-border-soft);
  border-bottom: 1px solid var(--c-border-soft);
}
.problems::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(44, 91, 216, 0.18), transparent);
}

.problem-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.problem-card {
  background: #fff;
  border: 1px solid var(--c-border);
  border-radius: var(--r-lg);
  padding: 36px 32px 32px;
  transition: border-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
  position: relative;
  overflow: hidden;
}
/* Top accent line — appears on hover */
.problem-card::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--c-primary), #5B7DE0);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.35s ease;
}
.problem-card:hover::before {
  transform: scaleX(1);
}
.problem-card:hover {
  border-color: rgba(44, 91, 216, 0.4);
  box-shadow: 0 14px 32px rgba(26, 39, 72, 0.08);
  transform: translateY(-3px);
}

.problem-card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 22px;
}
.problem-num {
  font-family: 'Inter', sans-serif;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--c-text-mute);
  padding: 4px 10px;
  background: var(--c-bg-soft);
  border-radius: 4px;
}
.problem-icon {
  width: 48px;
  height: 48px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--c-navy);
  border-radius: var(--r-md);
  color: #fff;
  box-shadow: 0 4px 12px rgba(26, 39, 72, 0.18);
}

.problem-card-title {
  font-size: 18px;
  font-weight: 700;
  line-height: 1.65;
  color: var(--c-text);
  margin-bottom: 14px;
  letter-spacing: 0.01em;
}
.problem-card-text {
  font-size: 14px;
  line-height: 1.85;
  color: var(--c-text-sub);
}

.problems-footer {
  margin-top: 56px;
  text-align: center;
}
.problems-footer p {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-size: 15px;
  color: var(--c-text);
  background: #fff;
  border: 1px solid var(--c-border);
  border-radius: 100px;
  padding: 14px 28px;
  box-shadow: 0 4px 16px rgba(26, 39, 72, 0.04);
}
.problems-footer p::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--c-green);
  box-shadow: 0 0 0 4px var(--c-green-soft);
  flex-shrink: 0;
}
.problems-footer strong {
  color: var(--c-primary);
  font-weight: 700;
}


/* ==========================================================
   Title Mark (見出し内の強調表現)
   ========================================================== */
.title-mark {
  color: var(--c-primary);
  position: relative;
  display: inline-block;
  padding: 0 4px;
  z-index: 1;
}
.title-mark::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0.08em;
  height: 0.3em;
  background: var(--c-primary-soft);
  z-index: -1;
  border-radius: 2px;
}

/* ==========================================================
   Approach Section (5ステップフロー)
   ========================================================== */
.approach {
  padding: var(--section-pad-y) 0;
  background: #fff;
  position: relative;
}

.approach-flow {
  display: grid;
  grid-template-columns: 1fr auto 1fr auto 1fr auto 1fr auto 1fr;
  align-items: stretch;
  gap: 10px;
}

.approach-step {
  position: relative;
  background: #fff;
  border: 1px solid var(--c-border);
  border-radius: var(--r-lg);
  padding: 26px 16px 22px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
  box-shadow: 0 4px 12px rgba(15, 26, 46, 0.04);
  transition: box-shadow 0.25s ease, transform 0.25s ease, border-color 0.25s ease;
}
.approach-step::before {
  content: "";
  position: absolute;
  top: 0; left: 18%; right: 18%;
  height: 2px;
  background: var(--c-primary);
  border-radius: 0 0 2px 2px;
  opacity: 0.85;
}
.approach-step:hover {
  transform: translateY(-3px);
  box-shadow: 0 14px 30px rgba(44, 91, 216, 0.10);
  border-color: rgba(44, 91, 216, 0.25);
}

.approach-step-final {
  background: linear-gradient(135deg, var(--c-navy) 0%, var(--c-navy-2) 100%);
  border-color: transparent;
  color: #fff;
}
.approach-step-final::before {
  background: var(--c-amber);
  left: 14%; right: 14%;
  opacity: 1;
}
.approach-step-final::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: var(--r-lg);
  background-image: radial-gradient(circle, rgba(255,255,255,0.10) 1px, transparent 1.4px);
  background-size: 14px 14px;
  pointer-events: none;
  opacity: 0.5;
}

.approach-num {
  font-family: 'Inter', sans-serif;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.16em;
  color: var(--c-text-mute);
  position: relative;
  z-index: 1;
}
.approach-step-final .approach-num { color: rgba(255,255,255,0.75); }

.approach-icon {
  width: 56px;
  height: 56px;
  background: var(--c-primary-soft-2);
  color: var(--c-primary);
  border-radius: 14px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  position: relative;
  z-index: 1;
}
.approach-step-final .approach-icon {
  background: rgba(255,255,255,0.16);
  color: #fff;
  border: 1px solid rgba(255,255,255,0.22);
}

.approach-title {
  font-size: 14px;
  font-weight: 700;
  line-height: 1.55;
  color: var(--c-text);
  position: relative;
  z-index: 1;
}
.approach-step-final .approach-title { color: #fff; }

.approach-arrow {
  display: flex;
  align-items: center;
  color: var(--c-text-mute);
  opacity: 0.55;
}

/* ==========================================================
   Values Section (3つの価値)
   ========================================================== */
.values {
  padding: var(--section-pad-y) 0;
  background: var(--c-bg-soft);
  border-top: 1px solid var(--c-border-soft);
  border-bottom: 1px solid var(--c-border-soft);
}

.value-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.value-card {
  position: relative;
  background: #fff;
  border: 1px solid var(--c-border);
  border-radius: var(--r-xl);
  padding: 42px 32px 36px;
  box-shadow: 0 6px 20px rgba(15, 26, 46, 0.05);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
  overflow: hidden;
}
.value-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 18px 40px rgba(44, 91, 216, 0.10);
}
.value-card::before {
  content: "";
  position: absolute;
  top: -40px;
  right: -40px;
  width: 140px;
  height: 140px;
  background: var(--c-primary-soft-2);
  border-radius: 50%;
  opacity: 0.6;
}

.value-num {
  position: relative;
  font-family: 'Inter', sans-serif;
  font-size: 56px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--c-primary);
  display: block;
  margin-bottom: 20px;
  opacity: 0.85;
}

.value-icon {
  position: relative;
  width: 56px;
  height: 56px;
  margin-bottom: 22px;
  background: var(--c-navy);
  color: #fff;
  border-radius: 14px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 6px 16px rgba(26, 39, 72, 0.20);
}

.value-title {
  position: relative;
  font-size: 19px;
  font-weight: 700;
  line-height: 1.6;
  color: var(--c-text);
  margin-bottom: 14px;
}

.value-text {
  position: relative;
  font-size: 14px;
  line-height: 1.85;
  color: var(--c-text-sub);
}

/* ==========================================================
   Cases Section (活用例)
   ========================================================== */
.cases {
  padding: var(--section-pad-y) 0;
  background: #fff;
}

.case-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.case-card {
  background: #fff;
  border: 1px solid var(--c-border);
  border-radius: var(--r-lg);
  padding: 28px 26px 26px;
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
  position: relative;
}
.case-card:hover {
  transform: translateY(-3px);
  border-color: rgba(44, 91, 216, 0.3);
  box-shadow: 0 14px 30px rgba(15, 26, 46, 0.08);
}

.case-icon {
  width: 44px;
  height: 44px;
  background: var(--c-primary-soft);
  color: var(--c-primary);
  border-radius: 10px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
}

.case-tag {
  display: inline-block;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--c-amber-deep);
  background: var(--c-amber-soft);
  padding: 4px 10px;
  border-radius: 4px;
  margin-bottom: 12px;
}

.case-title {
  font-size: 17px;
  font-weight: 700;
  line-height: 1.6;
  color: var(--c-text);
  margin-bottom: 10px;
}

.case-text {
  font-size: 13.5px;
  line-height: 1.85;
  color: var(--c-text-sub);
}

/* ==========================================================
   Reasons Section (選ばれる理由)
   ========================================================== */
.reasons {
  padding: var(--section-pad-y) 0;
  background: var(--c-bg-soft);
  border-top: 1px solid var(--c-border-soft);
  border-bottom: 1px solid var(--c-border-soft);
}

.reason-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}

.reason-card {
  position: relative;
  background: #fff;
  border: 1px solid var(--c-border);
  border-radius: var(--r-lg);
  padding: 30px 24px;
  box-shadow: 0 4px 12px rgba(15, 26, 46, 0.04);
  transition: box-shadow 0.25s ease, transform 0.25s ease;
  overflow: hidden;
}
.reason-card::after {
  content: "";
  position: absolute;
  inset: auto -30px -30px auto;
  width: 90px;
  height: 90px;
  background: linear-gradient(135deg, var(--c-primary-soft-2), transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}
.reason-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 14px 28px rgba(44, 91, 216, 0.10);
}

.reason-num-wrap {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 22px;
}
.reason-num {
  font-family: 'Inter', sans-serif;
  font-size: 26px;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--c-primary);
  line-height: 1;
}
.reason-num::before {
  content: "REASON";
  display: block;
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.16em;
  color: var(--c-text-mute);
  margin-bottom: 4px;
}
.reason-check {
  width: 28px;
  height: 28px;
  background: var(--c-green-soft);
  color: var(--c-green);
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.reason-title {
  position: relative;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.65;
  color: var(--c-text);
}

/* ==========================================================
   Flow Section (導入フロー / Timeline)
   ========================================================== */
.flow {
  padding: var(--section-pad-y) 0;
  background: #fff;
}

.flow-timeline {
  max-width: 760px;
  margin: 0 auto;
  position: relative;
}
.flow-timeline::before {
  content: "";
  position: absolute;
  left: 78px;
  top: 22px;
  bottom: 22px;
  width: 2px;
  background: linear-gradient(180deg, var(--c-primary) 0%, var(--c-primary) 80%, var(--c-amber) 100%);
  opacity: 0.25;
}

.flow-item {
  display: grid;
  grid-template-columns: 160px 1fr;
  gap: 32px;
  padding: 22px 0;
  position: relative;
}

.flow-marker {
  display: flex;
  align-items: center;
  gap: 12px;
  position: relative;
}
.flow-label {
  font-family: 'Inter', sans-serif;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--c-text-mute);
}
.flow-dot {
  position: relative;
  width: 14px;
  height: 14px;
  background: #fff;
  border: 3px solid var(--c-primary);
  border-radius: 50%;
  box-shadow: 0 0 0 5px rgba(44, 91, 216, 0.08);
  z-index: 1;
}
.flow-item-final .flow-dot {
  border-color: var(--c-amber);
  box-shadow: 0 0 0 5px rgba(232, 154, 60, 0.12);
}
.flow-item-final .flow-label { color: var(--c-amber-deep); }

.flow-content {
  background: #fff;
  border: 1px solid var(--c-border);
  border-radius: var(--r-md);
  padding: 20px 24px;
  box-shadow: 0 2px 8px rgba(15, 26, 46, 0.04);
  transition: box-shadow 0.25s ease, transform 0.25s ease;
}
.flow-item:hover .flow-content {
  transform: translateX(3px);
  box-shadow: 0 8px 20px rgba(44, 91, 216, 0.08);
}

.flow-title {
  font-size: 17px;
  font-weight: 700;
  color: var(--c-text);
  margin-bottom: 6px;
}
.flow-text {
  font-size: 14px;
  line-height: 1.85;
  color: var(--c-text-sub);
}

/* ==========================================================
   FAQ Section
   ========================================================== */
.faq {
  padding: var(--section-pad-y) 0;
  background: var(--c-bg-soft);
  border-top: 1px solid var(--c-border-soft);
}

.faq-list {
  max-width: 820px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.faq-item {
  background: #fff;
  border: 1px solid var(--c-border);
  border-radius: var(--r-md);
  overflow: hidden;
  box-shadow: 0 2px 8px rgba(15, 26, 46, 0.04);
  transition: box-shadow 0.25s ease, border-color 0.25s ease;
}
.faq-item.is-open {
  border-color: rgba(44, 91, 216, 0.3);
  box-shadow: 0 10px 24px rgba(44, 91, 216, 0.07);
}

.faq-q {
  width: 100%;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 18px;
  padding: 22px 26px;
  text-align: left;
  background: transparent;
  cursor: pointer;
  font-size: 15.5px;
  font-weight: 600;
  color: var(--c-text);
  transition: background-color 0.2s ease;
}
.faq-q:hover { background: var(--c-primary-soft-2); }

.faq-mark {
  width: 30px;
  height: 30px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: 'Inter', sans-serif;
  font-size: 13px;
  font-weight: 700;
  border-radius: 6px;
  letter-spacing: 0.02em;
  flex-shrink: 0;
}
.faq-mark-q {
  background: var(--c-primary);
  color: #fff;
}
.faq-mark-a {
  background: var(--c-amber-soft);
  color: var(--c-amber-deep);
  border: 1px solid rgba(232, 154, 60, 0.2);
}

.faq-q-text { line-height: 1.6; }

.faq-toggle {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--c-bg-soft);
  flex-shrink: 0;
  position: relative;
  transition: background-color 0.2s ease;
}
.faq-toggle::before,
.faq-toggle::after {
  content: "";
  position: absolute;
  top: 50%; left: 50%;
  background: var(--c-text);
  border-radius: 2px;
  transition: transform 0.25s ease, background-color 0.25s ease;
}
.faq-toggle::before {
  width: 12px;
  height: 2px;
  transform: translate(-50%, -50%);
}
.faq-toggle::after {
  width: 2px;
  height: 12px;
  transform: translate(-50%, -50%);
}
.faq-item.is-open .faq-toggle { background: var(--c-primary); }
.faq-item.is-open .faq-toggle::before { background: #fff; }
.faq-item.is-open .faq-toggle::after { transform: translate(-50%, -50%) scaleY(0); background: #fff; }

.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease;
}
.faq-item.is-open .faq-a { max-height: 500px; }

.faq-a-inner {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 18px;
  padding: 4px 26px 24px;
  border-top: 1px dashed var(--c-border);
  padding-top: 22px;
}
.faq-a-inner p {
  font-size: 14.5px;
  line-height: 1.95;
  color: var(--c-text-sub);
}

/* ==========================================================
   Final CTA Section
   ========================================================== */
.cta-final {
  position: relative;
  padding: 110px 0;
  background: var(--c-navy);
  color: #fff;
  overflow: hidden;
}

.cta-final-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(800px 400px at 90% 0%, rgba(44, 91, 216, 0.30) 0%, transparent 60%),
    radial-gradient(700px 380px at 0% 100%, rgba(232, 154, 60, 0.12) 0%, transparent 60%);
}
.cta-final-bg::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle, rgba(255,255,255,0.07) 1px, transparent 1.4px);
  background-size: 18px 18px;
  opacity: 0.6;
}

.cta-final-inner {
  position: relative;
  text-align: center;
  max-width: 720px;
  margin: 0 auto;
}

.cta-final-label {
  font-family: 'Inter', sans-serif;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--c-amber);
  margin-bottom: 22px;
  display: inline-flex;
  align-items: center;
  gap: 10px;
}
.cta-final-label::before,
.cta-final-label::after {
  content: "";
  width: 24px;
  height: 1px;
  background: var(--c-amber);
  opacity: 0.6;
}

.cta-final-title {
  font-size: clamp(26px, 3.4vw, 38px);
  font-weight: 700;
  line-height: 1.55;
  letter-spacing: 0.01em;
  color: #fff;
  margin-bottom: 24px;
}

.cta-final-desc {
  font-size: 15px;
  line-height: 1.95;
  color: rgba(255, 255, 255, 0.75);
  margin-bottom: 44px;
}

.cta-final-buttons {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
}
.cta-final-note {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 22px;
  font-size: 13px;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.55);
  justify-content: center;
  width: 100%;
}
.cta-final-note svg { color: var(--c-amber); opacity: 0.85; }

.btn-cta-outline {
  background: rgba(255, 255, 255, 0.06);
  color: #fff;
  border-color: rgba(255, 255, 255, 0.28);
  backdrop-filter: blur(6px);
}
.btn-cta-outline:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(255, 255, 255, 0.5);
  color: #fff;
}

/* ==========================================================
   Footer
   ========================================================== */
.site-footer {
  background: #0B1224;
  color: rgba(255, 255, 255, 0.7);
  padding: 64px 0 28px;
}

.footer-main {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 56px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-brand {
  max-width: 460px;
}
.footer-logo {
  margin-bottom: 18px;
}
.footer-logo .logo-img {
  height: 28px;
  opacity: 0.95;
}
.footer-desc {
  font-size: 13.5px;
  line-height: 1.95;
  color: rgba(255, 255, 255, 0.65);
}

.footer-nav-title {
  font-family: 'Inter', sans-serif;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.45);
  margin-bottom: 16px;
}
.footer-nav ul {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.footer-nav a {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.72);
  transition: color 0.18s ease;
}
.footer-nav a:hover { color: #fff; }

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 24px;
  flex-wrap: wrap;
  gap: 12px;
}
.footer-company {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 12.5px;
}
.footer-company-label {
  color: rgba(255, 255, 255, 0.4);
  letter-spacing: 0.06em;
}
.footer-company-name {
  color: rgba(255, 255, 255, 0.85);
  font-weight: 600;
  letter-spacing: 0.02em;
  text-decoration: none;
  transition: color 0.18s ease, border-color 0.18s ease;
  border-bottom: 1px solid rgba(255, 255, 255, 0.15);
  padding-bottom: 1px;
}
.footer-company-name:hover {
  color: #fff;
  border-bottom-color: rgba(255, 255, 255, 0.6);
}
.footer-copyright {
  font-family: 'Inter', sans-serif;
  font-size: 12px;
  color: rgba(255, 255, 255, 0.4);
  letter-spacing: 0.04em;
}

.footer-legal { display: inline-flex; }
.footer-legal-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12.5px;
  color: rgba(255, 255, 255, 0.7);
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 255, 255, 0.18);
  padding-bottom: 1px;
  transition: color 0.18s ease, border-color 0.18s ease;
}
.footer-legal-link:hover {
  color: #fff;
  border-bottom-color: rgba(255, 255, 255, 0.6);
}
.footer-legal-link svg { opacity: 0.7; }

/* ==========================================================
   Responsive
   ========================================================== */
@media (max-width: 960px) {
  .nav, .header-cta { display: none; }
  .hamburger { display: flex; }
  .sp-only { display: inline; }
}

/* Tablet — pull illustration in */
@media (max-width: 1200px) {
  .hero-illust {
    width: 520px;
    height: 520px;
    right: -140px;
    top: 100px;
    opacity: 0.7;
  }
}

@media (max-width: 1024px) {
  .approach-flow {
    grid-template-columns: repeat(3, 1fr);
    gap: 14px;
  }
  .approach-arrow { display: none; }
  .case-grid { grid-template-columns: repeat(2, 1fr); }
  .reason-grid { grid-template-columns: repeat(2, 1fr); }
  .value-grid { grid-template-columns: repeat(3, 1fr); gap: 18px; }
  .value-card { padding: 36px 26px 30px; }
}

@media (max-width: 960px) {
  .hero-illust {
    width: 420px;
    height: 420px;
    right: -200px;
    opacity: 0.55;
  }
  .value-grid { grid-template-columns: 1fr; }
  .footer-main { grid-template-columns: 1fr; gap: 36px; }
}

@media (max-width: 768px) {
  .container { padding: 0 22px; }

  :root {
    --section-pad-y: 80px;
  }

  .hero {
    padding: calc(var(--header-h) + 56px) 0 80px;
  }
  .hero-illust { display: none; }
  .hero-title { line-height: 1.5; }
  .voice-grid { grid-template-columns: 1fr; gap: 12px; }
  .voice-card-side { width: 64px; padding: 12px 6px; gap: 8px; }
  .voice-quote-mark { width: 34px; height: 34px; }
  .voice-card-label { font-size: 9px; }
  .voice-card-body { padding: 18px 20px; }
  .voice-text { font-size: 14px; }
  .voice-answer-side { width: 76px; }
  .voice-answer-body { padding: 20px 22px; }
  .voice-answer-body p { font-size: 14px; }
  .voice-connector-line { width: 50px; }
  .hero-cta { flex-direction: column; }

  /* Approach */
  .approach-flow { grid-template-columns: 1fr; gap: 12px; }
  .approach-step { padding: 22px 18px; flex-direction: row; text-align: left; gap: 18px; }
  .approach-step::before { display: none; }
  .approach-icon { width: 48px; height: 48px; flex-shrink: 0; }
  .approach-step .approach-num { position: absolute; top: 12px; right: 16px; font-size: 10px; }
  .approach-title { font-size: 15px; }
  .approach-step-final { background: linear-gradient(135deg, var(--c-navy), var(--c-navy-2)); }

  /* Cases */
  .case-grid { grid-template-columns: 1fr; gap: 14px; }
  .case-card { padding: 24px 22px; }

  /* Reasons */
  .reason-grid { grid-template-columns: 1fr; gap: 12px; }

  /* Flow Timeline */
  .flow-timeline::before { left: 28px; }
  .flow-item { grid-template-columns: 1fr; gap: 12px; }
  .flow-marker { padding-left: 56px; position: relative; }
  .flow-dot { position: absolute; left: 22px; top: 50%; transform: translateY(-50%); }

  /* FAQ */
  .faq-q { padding: 18px 20px; font-size: 14.5px; gap: 14px; }
  .faq-mark { width: 28px; height: 28px; font-size: 12px; }
  .faq-a-inner { padding: 18px 20px 20px; gap: 14px; }
  .faq-a-inner p { font-size: 13.5px; }

  /* CTA Final */
  .cta-final { padding: 80px 0; }
  .cta-final-buttons { flex-direction: column; }
  .cta-final-buttons .btn { width: 100%; }

  /* Footer */
  .footer-bottom { flex-direction: column; align-items: flex-start; }
  .hero-cta .btn { width: 100%; }
  .hero-points { gap: 16px; flex-direction: column; }

  .section-head { margin-bottom: 48px; }
  .problem-grid { grid-template-columns: 1fr; gap: 14px; }
  .problem-card { padding: 28px 24px; }
  .problem-icon { width: 42px; height: 42px; }
  .problems-footer p { font-size: 14px; padding: 14px 24px; line-height: 1.8; }
}