/* ============================================================
   CSS カスタムプロパティ（修正はここで一元管理）
   ============================================================ */
:root {
  /* Brand Colors */
  --color-primary:     #1A3A5C;   /* ネイビー：信頼・誠実 */
  --color-primary-lt:  #EBF1F8;   /* ネイビー薄 */
  --color-accent:      #2E6DA4;   /* アクセントブルー */
  --color-accent-dk:   #1B4F7A;   /* アクセント濃い */

  /* Neutrals */
  --color-text:        #1C1C1C;
  --color-text-sub:    #4A4A4A;
  --color-text-muted:  #777777;
  --color-border:      #D8E0EA;
  --color-bg:          #FFFFFF;
  --color-bg-soft:     #F5F7FA;
  --color-bg-dark:     #0F2338;

  /* Typography */
  --font-serif: 'Noto Serif JP', serif;
  --font-sans:  'Noto Sans JP', sans-serif;

  /* Spacing */
  --space-xs:   0.5rem;
  --space-sm:   1rem;
  --space-md:   2rem;
  --space-lg:   3.5rem;
  --space-xl:   5rem;

  /* Section Padding (mobile-first) */
  --sec-py: 4rem;
  --sec-px: 1.25rem;

  /* Max width */
  --max-w: 760px;
  --max-w-wide: 960px;

  /* Border radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;

  /* Transitions */
  --ease: cubic-bezier(0.4, 0, 0.2, 1);
}

/* ============================================================
   Reset & Base
   ============================================================ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

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

body {
  font-family: var(--font-sans);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}

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

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

.container--wide {
  width: 100%;
  max-width: var(--max-w-wide);
  margin: 0 auto;
  padding: 0 var(--sec-px);
}

/* Section spacing */
.section {
  padding: var(--sec-py) 0;
}

.section--dark {
  background: var(--color-bg-dark);
  color: #fff;
}

.section--soft {
  background: var(--color-bg-soft);
}

/* Section label */
.sec-label {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 0.75rem;
}

.section--dark .sec-label {
  color: #7FB3D8;
}

/* Section heading */
.sec-heading {
  font-family: var(--font-serif);
  font-size: clamp(1.35rem, 4vw, 1.75rem);
  font-weight: 600;
  line-height: 1.5;
  color: var(--color-primary);
  margin-bottom: 1.25rem;
}

/* PC表示では見出しの改行を非表示 */
@media (min-width: 768px) {
  .sec-heading br {
    display: none;
    margin: 0 0.5em;
  }
}

.section--dark .sec-heading {
  color: #fff;
}

.sec-lead {
  font-size: 0.95rem;
  color: var(--color-text-sub);
  line-height: 1.9;
  max-width: 600px;
}

.section--dark .sec-lead {
  color: #B8CCDE;
}

/* Divider */
.divider {
  width: 2.5rem;
  height: 2px;
  background: var(--color-accent);
  margin: 1.25rem 0;
}

.section--dark .divider {
  background: #7FB3D8;
}

/* ============================================================
   Navigation
   ============================================================ */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-border);
  transition: box-shadow 0.3s var(--ease);
}

.nav.scrolled {
  box-shadow: 0 2px 16px rgba(0,0,0,0.06);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
  padding: 0 var(--sec-px);
  max-width: var(--max-w-wide);
  margin: 0 auto;
}

.nav__logo {
  font-family: var(--font-serif);
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-primary);
  letter-spacing: 0.02em;
}

.nav__logo span {
  display: block;
  font-family: var(--font-sans);
  font-size: 0.65rem;
  color: var(--color-text-muted);
  font-weight: 400;
  letter-spacing: 0.04em;
  margin-top: -2px;
}

.nav__contact {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.nav__cta {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: var(--color-primary);
  color: #fff;
  font-size: 0.8rem;
  font-weight: 500;
  padding: 0.5rem 1.1rem;
  border-radius: var(--radius-sm);
  transition: background 0.2s var(--ease);
  white-space: nowrap;
}

.nav__cta:hover {
  background: var(--color-accent-dk);
}

/* ============================================================
   Hero
   ============================================================ */
.hero {
  padding-top: calc(60px + 4rem);
  padding-bottom: 4rem;
  background: var(--color-bg-dark);
  color: #fff;
  position: relative;
  overflow: hidden;
}

/* 背景の幾何学模様 */
.hero::before {
  content: '';
  position: absolute;
  top: -40px;
  right: -60px;
  width: 320px;
  height: 320px;
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: 50%;
  pointer-events: none;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -80px;
  right: -20px;
  width: 200px;
  height: 200px;
  border: 1px solid rgba(255,255,255,0.04);
  border-radius: 50%;
  pointer-events: none;
}

.hero__eyebrow {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: #7FB3D8;
  margin-bottom: 1.25rem;
  opacity: 0;
  animation: fadeUp 0.6s var(--ease) 0.1s forwards;
}

.hero__heading {
  font-family: var(--font-serif);
  font-size: clamp(1.6rem, 5.5vw, 2.6rem);
  font-weight: 600;
  line-height: 1.45;
  color: #fff;
  margin-bottom: 1.5rem;
  opacity: 0;
  animation: fadeUp 0.6s var(--ease) 0.2s forwards;
  max-width: 650px;
}

/* PC表示では改行を非表示 */
@media (min-width: 768px) {
  .hero__heading br {
    display: none;
    margin: 0 0.5em;
  }
}

.hero__heading em {
  font-style: normal;
  color: #7FB3D8;
}

.hero__body {
  font-size: 0.9rem;
  color: #B8CCDE;
  line-height: 1.9;
  max-width: 560px;
  margin-bottom: 2rem;
  opacity: 0;
  animation: fadeUp 0.6s var(--ease) 0.3s forwards;
}

.hero__cta-group {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  opacity: 0;
  animation: fadeUp 0.6s var(--ease) 0.4s forwards;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--color-accent);
  color: #fff;
  font-size: 0.9rem;
  font-weight: 500;
  padding: 0.9rem 1.75rem;
  border-radius: var(--radius-sm);
  border: none;
  cursor: pointer;
  transition: background 0.2s var(--ease), transform 0.1s var(--ease);
  text-align: center;
}

.btn-primary:hover {
  background: var(--color-accent-dk);
  transform: translateY(-1px);
}

.btn-primary:active {
  transform: translateY(0);
}

.hero__note {
  font-size: 0.73rem;
  color: #7A96AD;
  line-height: 1.6;
  padding-left: 0.1rem;
}

/* PC表示では注釈の改行を非表示 */
@media (min-width: 768px) {
  .hero__note br {
    display: none;
    margin: 0 0.5em;
  }
}

/* Hero metrics strip */
.hero__metrics {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: rgba(255,255,255,0.08);
  margin-top: 3rem;
  border-radius: var(--radius-md);
  overflow: hidden;
  opacity: 0;
  animation: fadeUp 0.6s var(--ease) 0.5s forwards;
}

.hero__metric {
  background: rgba(255,255,255,0.04);
  padding: 1.25rem 0.75rem;
  text-align: center;
}

.hero__metric-num {
  font-family: var(--font-serif);
  font-size: 1.6rem;
  font-weight: 600;
  color: #fff;
  display: block;
  line-height: 1;
  margin-bottom: 0.35rem;
}

.hero__metric-label {
  font-size: 0.68rem;
  color: #7A96AD;
  line-height: 1.4;
}

/* ============================================================
   Pain（課題共感）
   ============================================================ */
.pain__list {
  list-style: none;
  margin-top: 2rem;
  display: flex;
  flex-direction: column;
  gap: 0;
}

.pain__item {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
  padding: 1.1rem 0;
  border-bottom: 1px solid var(--color-border);
  opacity: 0;
  transform: translateX(-12px);
  transition: opacity 0.5s var(--ease), transform 0.5s var(--ease);
}

.pain__item.in-view {
  opacity: 1;
  transform: translateX(0);
}

.pain__item:last-child {
  border-bottom: none;
}

.pain__icon {
  width: 36px;
  height: 36px;
  background: var(--color-primary-lt);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.pain__icon svg {
  width: 16px;
  height: 16px;
  stroke: var(--color-accent);
  fill: none;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.pain__text {
  font-size: 0.9rem;
  color: var(--color-text);
  line-height: 1.75;
  padding-top: 0.4rem;
}

.pain__solution {
  font-size: 0.85rem;
  color: var(--color-accent);
  line-height: 1.7;
  margin-top: 0.6rem;
  padding-top: 0.6rem;
  border-top: 1px solid rgba(46, 109, 164, 0.2);
  font-weight: 500;
}

.pain__close {
  margin-top: 2rem;
  padding: 1.25rem 1.5rem;
  background: var(--color-primary-lt);
  border-left: 3px solid var(--color-accent);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  font-size: 0.88rem;
  color: var(--color-text-sub);
  line-height: 1.85;
}

/* ============================================================
   Solution（サービス概要）
   ============================================================ */
.solution__grid {
  margin-top: 2rem;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--color-border);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.solution__card {
  background: var(--color-bg);
  padding: 1.5rem;
  transition: background 0.2s var(--ease);
}

.solution__card:hover {
  background: var(--color-bg-soft);
}

/* カード枚数が奇数のとき、最後の1枚を全幅に */
.solution__card:last-child:nth-child(odd) {
  grid-column: 1 / -1;
}

.solution__card-header {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  margin-bottom: 0.75rem;
}

.solution__num {
  width: 28px;
  height: 28px;
  background: var(--color-primary);
  color: #fff;
  font-size: 0.72rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  flex-shrink: 0;
}

.solution__card-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--color-primary);
}

.solution__card-body {
  font-size: 0.85rem;
  color: var(--color-text-sub);
  line-height: 1.85;
  padding-left: calc(28px + 0.85rem);
}

/* ============================================================
   Why Us（選ばれる理由）
   ============================================================ */
.why__list {
  margin-top: 2rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.why__item {
  display: flex;
  gap: 1.25rem;
  align-items: flex-start;
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.5s var(--ease), transform 0.5s var(--ease);
}

.why__item.in-view {
  opacity: 1;
  transform: translateY(0);
}

.why__num {
  font-family: var(--font-serif);
  font-size: 2.2rem;
  font-weight: 600;
  color: rgba(255,255,255,0.12);
  line-height: 1;
  min-width: 2.5rem;
  padding-top: 0.1rem;
}

.why__body { flex: 1; }

.why__title {
  font-size: 0.95rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 0.5rem;
}

.why__text {
  font-size: 0.85rem;
  color: #B8CCDE;
  line-height: 1.85;
}

.why__detail {
  font-size: 0.8rem;
  color: #7FB3D8;
  line-height: 1.65;
  margin-top: 0.6rem;
  padding-top: 0.6rem;
  border-top: 1px solid rgba(127, 179, 216, 0.25);
  font-weight: 500;
}

/* ============================================================
   Case Study
   ============================================================ */
.case__meta {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-bottom: 1.5rem;
}

.badge {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 500;
  padding: 0.25rem 0.65rem;
  border-radius: 999px;
  border: 1px solid var(--color-border);
  color: var(--color-text-muted);
  background: var(--color-bg);
}

.case__context {
  font-size: 0.88rem;
  color: var(--color-text-sub);
  line-height: 1.85;
  padding: 1.25rem 1.5rem;
  background: var(--color-bg-soft);
  border-radius: var(--radius-md);
  margin-bottom: 2rem;
}

.timeline {
  position: relative;
  padding-left: 2rem;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 5px;
  top: 8px;
  bottom: 8px;
  width: 1px;
  background: var(--color-border);
}

.timeline__item {
  position: relative;
  margin-bottom: 1.75rem;
}

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

.timeline__dot {
  position: absolute;
  left: -2rem;
  top: 0.3rem;
  width: 11px;
  height: 11px;
  background: var(--color-bg);
  border: 2px solid var(--color-accent);
  border-radius: 50%;
}

.timeline__date {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--color-accent);
  margin-bottom: 0.3rem;
}

.timeline__title {
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 0.4rem;
}

.timeline__body {
  font-size: 0.84rem;
  color: var(--color-text-sub);
  line-height: 1.85;
}

/* ============================================================
   Case Studies Grid（支援事例：カード形式）
   ============================================================ */
.cases__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  margin-bottom: 2rem;
}

@media (min-width: 768px) {
  .cases__grid {
    grid-template-columns: 1fr 1fr;
    gap: 2.5rem;
  }
}

.case__card {
  background: var(--color-bg-soft);
  border-radius: var(--radius-md);
  padding: 1.75rem 1.5rem;
  border: 1px solid var(--color-border);
  transition: box-shadow 0.3s var(--ease), transform 0.3s var(--ease);
}

.case__card:hover {
  box-shadow: 0 4px 12px rgba(26, 58, 92, 0.08);
  transform: translateY(-2px);
}

.case__card-header {
  margin-bottom: 1rem;
}

.case__card-title {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 1rem;
}

.case__card-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.25rem;
}

.case__card-body {
  margin-bottom: 1.25rem;
}

.case__card-context {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-accent);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 0.5rem;
  display: block;
}

.case__card-description {
  font-size: 0.88rem;
  color: var(--color-text-sub);
  line-height: 1.8;
}

.case__card-services {
  border-top: 1px solid var(--color-border);
  padding-top: 1.25rem;
}

.case__card-label {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-accent);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 0.75rem;
  display: block;
}

.case__card-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.case__card-list li {
  font-size: 0.84rem;
  color: var(--color-text-sub);
  line-height: 1.75;
  padding-left: 1rem;
  margin-bottom: 0.5rem;
  position: relative;
}

.case__card-list li::before {
  content: '•';
  position: absolute;
  left: 0;
  color: var(--color-accent);
  font-weight: bold;
}

.case__card-list li:last-child {
  margin-bottom: 0;
}

.case__note {
  background: var(--color-primary-lt);
  border-left: 3px solid var(--color-accent);
  padding: 1rem 1.25rem;
  border-radius: var(--radius-md);
  font-size: 0.84rem;
  color: var(--color-text-sub);
  line-height: 1.8;
}

/* ============================================================
   Process（支援の流れ）
   ============================================================ */
.process__steps {
  margin-top: 2rem;
  counter-reset: step;
  display: flex;
  flex-direction: column;
  gap: 0;
}

.process__step {
  display: flex;
  gap: 1.25rem;
  align-items: flex-start;
  padding: 1.25rem 0;
  border-bottom: 1px solid var(--color-border);
  position: relative;
}

.process__step:last-child {
  border-bottom: none;
}

.process__step-num {
  width: 36px;
  height: 36px;
  background: var(--color-primary);
  color: #fff;
  font-size: 0.78rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  flex-shrink: 0;
}

.process__step-body { padding-top: 0.3rem; }

.process__step-title {
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 0.35rem;
}

.process__step-text {
  font-size: 0.84rem;
  color: var(--color-text-sub);
  line-height: 1.85;
}

.process__step-timeline {
  font-size: 0.78rem;
  color: var(--color-accent);
  line-height: 1.7;
  margin-top: 0.6rem;
  padding-top: 0.6rem;
  border-top: 1px solid var(--color-border);
  font-weight: 600;
}

/* ============================================================
   Contact（問い合わせ）
   ============================================================ */
.contact {
  background: var(--color-bg-dark);
  color: #fff;
}

.contact__heading {
  font-family: var(--font-serif);
  font-size: clamp(1.3rem, 4vw, 1.65rem);
  font-weight: 600;
  color: #fff;
  margin-bottom: 0.75rem;
  line-height: 1.5;
}

.contact__lead {
  font-size: 0.88rem;
  color: #B8CCDE;
  line-height: 1.9;
  margin-bottom: 2rem;
}

.contact__quicklink {
  text-align: center;
  padding: 2rem;
  background: rgba(46, 109, 164, 0.08);
  border-radius: var(--radius-md);
  margin-bottom: 2rem;
}

.contact__quicklink p {
  font-size: 0.9rem;
  color: #B8CCDE;
  margin-bottom: 0.8rem;
}

.btn-form {
  display: inline-block;
  background: var(--color-accent);
  color: #fff;
  padding: 0.9rem 2rem;
  border-radius: var(--radius-md);
  font-size: 1rem;
  font-weight: 600;
  text-decoration: none;
  transition: background 0.3s var(--ease), transform 0.2s var(--ease);
  margin-bottom: 1rem;
}

.btn-form:hover {
  background: var(--color-accent-dk);
  transform: translateY(-2px);
}

.contact__or {
  text-align: center;
  font-size: 0.9rem;
  color: #B8CCDE;
  margin-bottom: 1.5rem;
  font-weight: 500;
}

.form {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.form__row {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.form__label {
  font-size: 0.78rem;
  font-weight: 500;
  color: #B8CCDE;
}

.form__required {
  font-size: 0.68rem;
  color: #E88;
  margin-left: 0.3rem;
}

.form__input,
.form__textarea {
  width: 100%;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.14);
  border-radius: var(--radius-sm);
  padding: 0.75rem 1rem;
  font-size: 0.9rem;
  font-family: var(--font-sans);
  color: #fff;
  transition: border-color 0.2s var(--ease), background 0.2s var(--ease);
  -webkit-appearance: none;
}

.form__input::placeholder,
.form__textarea::placeholder {
  color: rgba(255,255,255,0.28);
}

.form__input:focus,
.form__textarea:focus {
  outline: none;
  border-color: var(--color-accent);
  background: rgba(46, 109, 164, 0.05);
}
  border-color: #7FB3D8;
  background: rgba(255,255,255,0.09);
}

.form__textarea {
  resize: vertical;
  min-height: 110px;
  line-height: 1.7;
}

.form__radio-group {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  margin-top: 0.4rem;
}

.form__radio {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  cursor: pointer;
  font-size: 0.88rem;
  color: #fff;
}

.form__radio input[type="radio"] {
  appearance: none;
  -webkit-appearance: none;
  width: 18px;
  height: 18px;
  border: 2px solid rgba(255,255,255,0.3);
  border-radius: 50%;
  flex-shrink: 0;
  position: relative;
  transition: border-color 0.2s var(--ease);
  cursor: pointer;
}

.form__radio input[type="radio"]:checked {
  border-color: #7FB3D8;
}

.form__radio input[type="radio"]:checked::after {
  content: '';
  position: absolute;
  inset: 3px;
  background: #7FB3D8;
  border-radius: 50%;
}

@media (min-width: 640px) {
  .form__radio-group {
    flex-direction: row;
    gap: 1.5rem;
  }
}

.form__hint {
  font-size: 0.72rem;
  color: rgba(255,255,255,0.35);
  margin-top: 0.25rem;
}

.form__submit {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  margin-top: 0.5rem;
}

.btn-submit {
  width: 100%;
  background: var(--color-accent);
  color: #fff;
  border: none;
  border-radius: var(--radius-sm);
  padding: 1rem;
  font-size: 0.95rem;
  font-weight: 500;
  font-family: var(--font-sans);
  cursor: pointer;
  transition: background 0.2s var(--ease), transform 0.1s var(--ease);
}

.btn-submit:hover {
  background: var(--color-accent-dk);
  transform: translateY(-1px);
}

.btn-submit:active {
  transform: translateY(0);
}

.form__note {
  font-size: 0.72rem;
  color: rgba(255,255,255,0.35);
  line-height: 1.65;
  text-align: center;
}

/* ============================================================
   フローティング CTA ボタン
   ============================================================ */
.float-cta {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  z-index: 200;
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  background: #E07B39;
  color: #fff;
  font-weight: 700;
  padding: 1rem 1.8rem;
  border-radius: 999px;
  box-shadow: 0 6px 28px rgba(224,123,57,0.55), 0 2px 8px rgba(0,0,0,0.15);
  transition: background 0.2s var(--ease), transform 0.2s var(--ease), opacity 0.3s var(--ease), visibility 0.3s var(--ease);
  text-decoration: none;
  white-space: nowrap;
}

.float-cta svg {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}

.float-cta__text {
  display: flex;
  flex-direction: column;
  gap: 0.1rem;
  line-height: 1.2;
}

.float-cta__sub {
  font-size: 0.7rem;
  font-weight: 500;
  opacity: 0.88;
  letter-spacing: 0.04em;
}

.float-cta__main {
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.float-cta:hover {
  background: #C4692D;
  transform: translateY(-3px);
  box-shadow: 0 10px 32px rgba(224,123,57,0.6), 0 4px 12px rgba(0,0,0,0.18);
}

.float-cta.hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

/* ============================================================
   FAQ
   ============================================================ */
.faq__list {
  margin-top: 2rem;
  display: flex;
  flex-direction: column;
}

.faq__item {
  padding: 1.25rem 0;
  border-bottom: 1px solid var(--color-border);
}
.faq__item:last-child { border-bottom: none; }

.faq__q {
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 0.5rem;
  padding-left: 1.4rem;
  position: relative;
}
.faq__q::before {
  content: 'Q';
  position: absolute;
  left: 0;
  color: var(--color-accent);
  font-family: var(--font-serif);
  font-size: 0.9rem;
}

.faq__a {
  font-size: 0.88rem;
  color: var(--color-text-sub);
  line-height: 1.85;
  padding-left: 1.4rem;
  position: relative;
}
.faq__a::before {
  content: 'A';
  position: absolute;
  left: 0;
  color: var(--color-text-muted);
  font-family: var(--font-serif);
  font-size: 0.9rem;
}

/* ============================================================
   ③ メディア（動画・写真）
   ============================================================ */

/* YouTube などの動画埋め込み（16:9 アスペクト比維持） */
.media__video {
  position: relative;
  width: 100%;
  padding-top: 56.25%;
  margin-bottom: 2rem;
  border-radius: var(--radius-md);
  overflow: hidden;
}

.media__video iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: none;
}

/* 写真グリッド */
.media__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.75rem;
}

.media__grid img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: var(--radius-md);
}

@media (min-width: 640px) {
  .media__grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* ============================================================
   Footer
   ============================================================ */
.footer {
  background: #080F17;
  padding: 2rem var(--sec-px);
  text-align: center;
}

.footer__logo {
  font-family: var(--font-serif);
  font-size: 0.95rem;
  font-weight: 600;
  color: rgba(255,255,255,0.5);
  margin-bottom: 0.5rem;
}

.footer__copy {
  font-size: 0.72rem;
  color: rgba(255,255,255,0.25);
}

/* ============================================================
   Animations
   ============================================================ */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ============================================================
   Responsive: Tablet / Desktop (640px+)
   ============================================================ */
@media (min-width: 640px) {
  :root {
    --sec-py: 5.5rem;
    --sec-px: 2rem;
  }

  .hero__cta-group {
    flex-direction: row;
    align-items: center;
  }

  .solution__grid {
    grid-template-columns: 1fr 1fr;
  }

  .hero__metrics {
    grid-template-columns: repeat(2, 1fr);
  }

  .form {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
  }

  .form__row--full {
    grid-column: 1 / -1;
  }
}

@media (min-width: 960px) {
  :root {
    --sec-py: 6.5rem;
  }
}