/* ==========================================================================
   TSUCHI-TEX ブランドサイト共通スタイルシート
   メイン：白 / ベース：グレー / アクセント：グリーン（ボタン等）
   ========================================================================== */

:root {
  --color-terra: #8F3F2B;       /* Deep Terra：ブランドアクセント（ラベル・数字など） */
  --color-terra-soft: #B5714F;  /* Terra（明）：グラデーション・装飾用 */
  --color-terra-tint: #F4E9E1;  /* Terra（淡）：帯セクション背景用 */
  --color-plaster: #F1F1EE;     /* ベースのグレー：背景色 */
  --color-carbon: #1F1F1D;      /* 文字色 */
  --color-mineral: #FFFFFF;     /* メインの白：背景色 */
  --color-lime: #15803E;        /* アクセントグリーン：ボタンなど */
  --color-lime-dark: #106830;   /* アクセントグリーン（ホバー） */

  --font-base: "Noto Sans JP", "Helvetica Neue", Arial, sans-serif;

  --container-width: 1120px;
  --space-xs: 8px;
  --space-sm: 16px;
  --space-md: 24px;
  --space-lg: 40px;
  --space-xl: 64px;
}

/* ---------- Reset ---------- */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-base);
  background-color: var(--color-mineral);
  color: var(--color-carbon);
  line-height: 1.8;
  font-size: 17px;
  -webkit-font-smoothing: antialiased;
}

body.has-sticky-cta {
  padding-bottom: 64px;
}

@media (min-width: 860px) {
  body.has-sticky-cta {
    padding-bottom: 0;
  }
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
}

ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

h1, h2, h3, h4, p {
  margin: 0;
}

button {
  font-family: inherit;
  cursor: pointer;
}

.container {
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
}

.eyebrow {
  display: inline-block;
  font-size: 13px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: rgba(31, 31, 29, 0.82);
  font-weight: 700;
  margin-bottom: var(--space-sm);
}

.hero .eyebrow {
  color: rgba(255, 255, 255, 0.85);
}

.section-heading {
  font-size: clamp(26px, 4.4vw, 40px);
  letter-spacing: 0.02em;
  font-weight: 700;
  line-height: 1.5;
  margin-bottom: var(--space-md);
}

.section-lead {
  font-size: 17px;
  line-height: 1.9;
  max-width: 720px;
}

.reassure-line {
  font-size: clamp(20px, 3vw, 28px);
  font-weight: 700;
  line-height: 1.55;
  color: var(--color-carbon);
  max-width: 760px;
  margin-top: var(--space-md);
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}

.reassure-line .accent {
  color: var(--color-terra);
}

section {
  padding: var(--space-xl) 0;
}

.section-alt {
  background-color: var(--color-plaster);
}

/* ---------- Section Dark (used sparingly, for standout sections only) ---------- */
.section-dark {
  background-color: var(--color-carbon);
  color: #FFFFFF;
}

.section-dark .eyebrow,
.section-dark .trust-subheading {
  color: rgba(255, 255, 255, 0.85);
}

.section-dark .reason-item .num {
  color: rgba(255, 255, 255, 0.85);
}

.section-dark .reason-item p {
  color: rgba(255, 255, 255, 0.85);
}

.section-dark .reason-item {
  border-bottom-color: rgba(255, 255, 255, 0.15);
}

.section-dark .btn-outline-dark {
  border-color: rgba(255, 255, 255, 0.7);
  color: #FFFFFF;
}

.section-dark .case-category .count {
  color: rgba(255, 255, 255, 0.85);
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 15px 30px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.04em;
  border: 1px solid transparent;
  transition: transform 0.2s ease, opacity 0.2s ease, background-color 0.2s ease;
  white-space: nowrap;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn-primary {
  background-color: var(--color-lime);
  color: #FFFFFF;
}

.btn-primary:hover {
  background-color: var(--color-lime-dark);
}

.btn-secondary {
  background-color: transparent;
  border-color: currentColor;
  color: inherit;
}

.btn-outline-dark {
  background-color: transparent;
  border-color: var(--color-carbon);
  color: var(--color-carbon);
}

.btn-white {
  background-color: #FFFFFF;
  border-color: rgba(31, 31, 29, 0.14);
  color: var(--color-carbon);
}

.btn-gradient {
  background: linear-gradient(90deg, var(--color-lime-dark) 0%, var(--color-lime) 100%);
  color: #FFFFFF;
  border: none;
}

.btn-gradient:hover {
  background: linear-gradient(90deg, var(--color-lime) 0%, var(--color-lime-dark) 100%);
}

.btn-white:hover {
  background-color: var(--color-plaster);
}

.btn-block {
  width: 100%;
}

.cta-group {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-top: var(--space-md);
}


/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid rgba(21, 20, 18, 0.08);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.logo {
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--color-carbon);
  white-space: nowrap;
  flex-shrink: 0;
}

.logo span {
  color: var(--color-lime);
}

.nav-desktop {
  display: none;
  margin-left: var(--space-lg);
}

.nav-desktop ul {
  display: flex;
  gap: var(--space-sm);
  flex-wrap: nowrap;
  white-space: nowrap;
}

.nav-desktop a {
  font-size: 14px;
  letter-spacing: 0.06em;
  font-weight: 700;
}

.nav-desktop a:hover {
  color: var(--color-lime);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.header-cta {
  display: none;
  padding: 9px 18px;
  font-size: 13px;
}

.hamburger {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  background: none;
  border: none;
  padding: 0;
}

.hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background-color: var(--color-carbon);
  transition: transform 0.25s ease, opacity 0.25s ease;
}

.hamburger[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.hamburger[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}

.hamburger[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.nav-mobile {
  position: fixed;
  top: 72px;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: var(--color-mineral);
  transform: translateY(-100%);
  opacity: 0;
  visibility: hidden;
  transition: transform 0.3s ease, opacity 0.3s ease;
  z-index: 99;
  overflow-y: auto;
}

.nav-mobile.is-open {
  transform: translateY(0);
  opacity: 1;
  visibility: visible;
}

.nav-mobile .container {
  padding-top: var(--space-lg);
  padding-bottom: var(--space-lg);
}

.nav-mobile ul {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
}

.nav-mobile a {
  font-size: 22px;
  font-weight: 700;
  letter-spacing: 0.02em;
}

/* ---------- Hero ---------- */
.hero {
  background-color: var(--color-carbon);
  color: #FFFFFF;
  padding: var(--space-xl) 0;
  overflow: hidden;
}

.hero .container {
  display: grid;
  gap: var(--space-lg);
  align-items: center;
}

.hero-heading {
  font-size: clamp(34px, 6.4vw, 58px);
  line-height: 1.35;
  letter-spacing: 0.01em;
  font-weight: 700;
  margin-bottom: var(--space-md);
}

.hero-lead {
  font-size: clamp(16px, 2vw, 19px);
  line-height: 1.9;
  max-width: 560px;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.92);
}

/* ---------- Hero overlay variant (photo as full-bleed background, text left) ---------- */
.hero-overlay .container {
  display: flex;
  align-items: center;
  position: relative;
  min-height: clamp(480px, 58vw, 600px);
  padding: var(--space-xl) 0;
}

.hero-overlay .hero-visual {
  position: absolute;
  inset: 0;
  border-radius: 0;
  aspect-ratio: auto;
  z-index: 0;
}

.hero-overlay .hero-visual img {
  object-position: center 38%;
}

.hero-overlay .hero-visual::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(19, 17, 16, 0.86) 0%, rgba(19, 17, 16, 0.72) 34%, rgba(19, 17, 16, 0.32) 62%, rgba(19, 17, 16, 0.06) 88%);
}

.hero-overlay .hero-content {
  position: relative;
  z-index: 1;
  max-width: 560px;
}

@media (min-width: 860px) {
  .hero-overlay .container {
    min-height: clamp(520px, 46vw, 640px);
  }
}

@keyframes heroHeadingIn {
  from { opacity: 0; transform: translateY(18px); }
  to { opacity: 1; transform: translateY(0); }
}

.hero-heading-center {
  animation: heroHeadingIn 0.9s cubic-bezier(0.16, 0.84, 0.44, 1) both;
}

@media (prefers-reduced-motion: reduce) {
  .hero-heading-center {
    animation: none;
  }
}

/* ---------- Bracket accent (decorative ＼ … ／ callout) ---------- */
.bracket-accent {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
  color: var(--color-terra-soft);
}

.bracket-accent::before {
  content: "＼";
}

.bracket-accent::after {
  content: "／";
}

/* ---------- CTA hierarchy helpers (primary CTA / assist links) ---------- */
.cta-note {
  margin-top: var(--space-xs);
  font-size: 13px;
  color: rgba(31, 31, 29, 0.82);
}

.hero .cta-note {
  color: rgba(255, 255, 255, 0.85);
}

.cta-links-minor {
  margin-top: var(--space-md);
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md) var(--space-lg);
}

.hero-overlay .cta-group .btn {
  width: 100%;
}

.hero .link-chip {
  color: var(--color-mineral);
  background-color: rgba(0, 0, 0, 0.35);
  border-color: rgba(255, 255, 255, 0.5);
}

.hero .link-chip:hover {
  background-color: rgba(0, 0, 0, 0.5);
  border-color: rgba(255, 255, 255, 0.8);
}

.hero-visual {
  position: relative;
  border-radius: 20px;
  overflow: hidden;
  aspect-ratio: 4 / 3;
}

.hero-visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.eyebrow-badge {
  background-color: var(--color-lime);
  color: #FFFFFF !important;
  border: none;
  border-radius: 999px;
  padding: 6px 14px;
}

.hero-badges {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 8px;
  margin-top: var(--space-md);
  margin-bottom: var(--space-md);
}

.hero-badge {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  background-color: var(--color-mineral);
  border: 1.5px solid var(--color-carbon);
  border-radius: 8px;
  padding: 7px 12px 9px;
  font-size: 12.5px;
  font-weight: 700;
  line-height: 1.3;
  color: var(--color-carbon);
  text-align: center;
}

.hero-badge::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: rgba(31, 31, 29, 0.35);
  flex-shrink: 0;
}

.hero-badge::after {
  content: "";
  position: absolute;
  left: 14px;
  bottom: -6px;
  width: 0;
  height: 0;
  border-left: 5px solid transparent;
  border-right: 5px solid transparent;
  border-top: 6px solid var(--color-carbon);
}

.hero-badge strong {
  color: var(--color-terra);
  font-weight: 700;
  margin-right: 4px;
}

/* ---------- Cards / grids ---------- */
.grid {
  display: grid;
  gap: var(--space-md);
  margin-top: var(--space-lg);
}

.grid-3 {
  grid-template-columns: 1fr;
}

.grid-2 {
  grid-template-columns: 1fr;
}

.card {
  background-color: var(--color-mineral);
  border: 1px solid rgba(21, 20, 18, 0.1);
  border-radius: 14px;
  padding: var(--space-md);
  display: flex;
  flex-direction: column;
  height: 100%;
}

.section-alt .card {
  background-color: var(--color-mineral);
}

.card-number {
  font-size: 13px;
  letter-spacing: 0.1em;
  color: rgba(31, 31, 29, 0.82);
  font-weight: 700;
  margin-bottom: var(--space-sm);
}

.card h3 {
  font-size: 19px;
  font-weight: 700;
  margin-bottom: var(--space-xs);
  color: var(--color-carbon);
}

.card p {
  font-size: 15px;
  line-height: 1.85;
  color: rgba(31, 31, 29, 0.82);
}

.card-spec {
  font-size: 12.5px;
  color: rgba(31, 31, 29, 0.82);
  margin-top: auto;
  padding-top: 10px;
  border-top: 1px solid rgba(21, 20, 18, 0.08);
}

.card-spec a {
  color: var(--color-carbon);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.card-link {
  color: inherit;
  text-decoration: none;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.card-link:hover {
  border-color: rgba(21, 20, 18, 0.3);
  box-shadow: 0 4px 16px rgba(21, 20, 18, 0.08);
}

.card-link .card-spec {
  color: var(--color-carbon);
  font-weight: 700;
  border-top: none;
  padding-top: 0;
}



.card-image {
  aspect-ratio: 4 / 3;
  border-radius: 10px;
  overflow: hidden;
  margin-bottom: var(--space-sm);
}

.card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ---------- Use case chips ---------- */
.usecase-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-sm);
  margin-top: var(--space-lg);
}

.usecase-chip {
  background-color: var(--color-plaster);
  border: 1px solid rgba(21, 20, 18, 0.1);
  border-radius: 12px;
  padding: var(--space-md) var(--space-sm);
  text-align: center;
  font-weight: 700;
  font-size: 15px;
}

/* ---------- Why list ---------- */
.reason-list {
  margin-top: var(--space-lg);
  display: grid;
  gap: var(--space-md);
}

.reason-item {
  display: flex;
  gap: var(--space-sm);
  align-items: flex-start;
  padding-bottom: var(--space-md);
  border-bottom: 1px solid rgba(21, 20, 18, 0.1);
}

.reason-item .num {
  font-size: 22px;
  font-weight: 700;
  color: rgba(31, 31, 29, 0.82);
  min-width: 40px;
}

.reason-item h3 {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 4px;
}

.reason-item p {
  font-size: 15px;
  color: rgba(31, 31, 29, 0.82);
}

/* ---------- Simple list (Business Problem) ---------- */
.check-list {
  margin-top: var(--space-lg);
  display: grid;
  gap: var(--space-sm);
}

.check-list li {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  font-size: 16px;
  line-height: 1.8;
}

.check-list li::before {
  content: "";
  flex-shrink: 0;
  width: 8px;
  height: 8px;
  margin-top: 9px;
  border-radius: 50%;
  background-color: var(--color-lime);
}

/* ---------- Operation block ---------- */
.op-block {
  margin-top: var(--space-lg);
  display: grid;
  gap: var(--space-sm);
}

.op-row {
  display: flex;
  justify-content: space-between;
  gap: var(--space-sm);
  padding: var(--space-sm) 0;
  border-bottom: 1px solid rgba(21, 20, 18, 0.1);
  font-size: 15px;
}

.op-row .label {
  font-weight: 700;
  color: rgba(31, 31, 29, 0.82);
  min-width: 140px;
}

/* ---------- Flow steps (partner page) ---------- */
.flow-list {
  margin-top: var(--space-lg);
  display: grid;
  gap: var(--space-sm);
}

.flow-step {
  display: flex;
  gap: var(--space-sm);
  align-items: center;
  background-color: var(--color-plaster);
  border: 1px solid rgba(21, 20, 18, 0.1);
  border-radius: 12px;
  padding: var(--space-sm) var(--space-md);
}

.flow-step .step-num {
  flex-shrink: 0;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background-color: var(--color-lime);
  color: #FFFFFF;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 14px;
}

.flow-step p {
  font-weight: 700;
  font-size: 16px;
}

/* ---------- Problem photo / caption ---------- */
.problem-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-lg);
  align-items: stretch;
  margin: var(--space-lg) 0 0;
}

.problem-photo {
  flex: 0 1 420px;
  max-width: 420px;
  margin: 0;
  border-radius: 14px;
  overflow: hidden;
  background-color: var(--color-plaster);
  align-self: flex-start;
}

.problem-photo img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.problem-photo figcaption {
  padding: var(--space-sm) var(--space-md);
  font-size: 13px;
  line-height: 1.8;
  color: rgba(31, 31, 29, 0.82);
}

.problem-side {
  flex: 1 1 260px;
  border-left: 2px solid var(--color-terra);
  padding-left: var(--space-md);
  align-self: center;
}

.problem-side-label {
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-terra);
  margin-bottom: var(--space-sm);
}

.problem-side ul {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.problem-side li {
  font-size: 15px;
  line-height: 1.8;
  color: var(--color-carbon);
}

/* ---------- Contact form embed ---------- */
.form-embed {
  margin-top: var(--space-lg);
  border: 1px solid rgba(21, 20, 18, 0.1);
  border-radius: 14px;
  overflow: hidden;
  background-color: var(--color-mineral);
}

.form-embed iframe {
  display: block;
  width: 100%;
  min-height: 1400px;
  border: 0;
}

/* ---------- Case studies (works page) ---------- */
.case-section {
  margin-top: var(--space-xl);
}

.case-section:first-of-type {
  margin-top: var(--space-lg);
}

.case-category {
  font-size: 15px;
  font-weight: 700;
  margin-bottom: var(--space-sm);
  display: flex;
  align-items: baseline;
  gap: 8px;
}

.case-category .count {
  font-size: 12px;
  font-weight: 500;
  color: rgba(31, 31, 29, 0.82);
}

.case-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-sm);
}

.case-card {
  display: flex;
  flex-direction: column;
  border: 1px solid rgba(21, 20, 18, 0.1);
  border-radius: 12px;
  overflow: hidden;
  background-color: var(--color-mineral);
}

.case-card .case-image {
  width: 100%;
  aspect-ratio: 16 / 9;
  background-color: var(--color-plaster);
  overflow: hidden;
}

.case-card .case-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.case-card .case-body {
  padding: var(--space-sm) var(--space-md) var(--space-md);
}

.case-card .case-name {
  font-weight: 700;
  font-size: 16px;
  color: var(--color-carbon);
  margin-bottom: 10px;
}

.case-facts {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-bottom: 10px;
  padding-bottom: 10px;
  border-bottom: 1px solid rgba(21, 20, 18, 0.08);
}

.case-facts li {
  font-size: 13px;
  line-height: 1.7;
  color: rgba(31, 31, 29, 0.85);
}

.fact-label {
  display: inline-block;
  min-width: 76px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: rgba(31, 31, 29, 0.82);
  margin-right: 6px;
}

.case-desc {
  font-size: 13.5px;
  line-height: 1.85;
  color: rgba(31, 31, 29, 0.8);
  margin-bottom: 8px;
}

.case-meta {
  font-size: 12px;
  line-height: 1.8;
  color: rgba(31, 31, 29, 0.82);
}

.case-card-minimal .case-desc {
  margin-bottom: 0;
  color: rgba(31, 31, 29, 0.82);
}

.case-card-no-image {
  background-color: var(--color-plaster);
}

.case-card-no-image .case-body {
  padding: var(--space-md);
}

.case-card-no-image .case-name {
  margin-bottom: 8px;
}


@media (min-width: 640px) {
  .case-card {
    flex-direction: row;
  }

  .case-card .case-image {
    width: 220px;
    flex-shrink: 0;
    aspect-ratio: auto;
  }

  .case-card .case-body {
    padding: var(--space-md);
  }
}

@media (min-width: 1024px) {
  .case-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .case-card {
    flex-direction: column;
  }

  .case-card .case-image {
    width: 100%;
    aspect-ratio: 16 / 9;
  }
}

/* ---------- Trust (adopter logos) ---------- */
.stat-highlight {
  display: flex;
  align-items: baseline;
  gap: var(--space-sm);
  margin-top: var(--space-lg);
  padding-bottom: var(--space-md);
  border-bottom: 1px solid rgba(21, 20, 18, 0.1);
}

.stat-highlight-number {
  font-size: 48px;
  font-weight: 700;
  line-height: 1;
  color: var(--color-carbon);
}

.stat-highlight-number span {
  font-size: 20px;
  font-weight: 700;
  margin-left: 2px;
}

.stat-highlight-label {
  font-size: 14px;
  color: rgba(31, 31, 29, 0.82);
}

.stat-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-sm);
  margin-top: var(--space-md);
}

.stat-tile {
  border: 1px solid rgba(21, 20, 18, 0.1);
  border-radius: 12px;
  padding: var(--space-sm) var(--space-md);
  background-color: var(--color-mineral);
}

.stat-number {
  font-size: 24px;
  font-weight: 700;
  color: var(--color-carbon);
  margin-bottom: 4px;
}

.stat-label {
  font-size: 13px;
  color: rgba(31, 31, 29, 0.82);
}

@media (min-width: 640px) {
  .stat-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}


.trust-subheading {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(31, 31, 29, 0.82);
  margin-top: var(--space-lg);
  margin-bottom: var(--space-sm);
}

.logo-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-sm);
}

.logo-tile {
  aspect-ratio: 16 / 9;
  border: 1px solid rgba(21, 20, 18, 0.12);
  border-radius: 10px;
  background-color: var(--color-mineral);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.logo-tile img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: grayscale(100%);
  opacity: 0.7;
}

/* ---------- FAQ Accordion ---------- */
.faq-list {
  margin-top: var(--space-lg);
  display: grid;
  gap: var(--space-sm);
}

.faq-item {
  border-bottom: 1px solid rgba(21, 20, 18, 0.15);
}

.faq-question {
  width: 100%;
  background: none;
  border: none;
  text-align: left;
  padding: var(--space-sm) 4px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-sm);
  font-size: 16px;
  font-weight: 700;
  color: var(--color-carbon);
}

.faq-icon {
  flex-shrink: 0;
  font-size: 20px;
  color: var(--color-lime);
  transition: transform 0.25s ease;
}

.faq-question[aria-expanded="true"] .faq-icon {
  transform: rotate(45deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}

.faq-answer p {
  padding: 0 4px var(--space-sm);
  font-size: 15px;
  line-height: 1.85;
  color: rgba(31, 31, 29, 0.82);
}

/* ---------- Final CTA ---------- */
.final-cta {
  background-color: var(--color-plaster);
  text-align: center;
}

.final-cta .container {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.final-cta .cta-group {
  justify-content: center;
}

.final-cta .section-lead {
  max-width: 640px;
  margin: 0 auto var(--space-md);
}

.link-chip {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 13px;
  font-weight: 700;
  color: var(--color-carbon);
  background-color: var(--color-mineral);
  border: 1px solid rgba(31, 31, 29, 0.2);
  border-radius: 999px;
  padding: 8px 14px;
  transition: background-color 0.2s ease, border-color 0.2s ease;
}

.link-chip:hover {
  background-color: var(--color-plaster);
  border-color: rgba(31, 31, 29, 0.4);
}

/* ---------- Journal / 最新情報 ---------- */
.journal-links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-top: var(--space-md);
}

/* ---------- Footer ---------- */
.site-footer {
  background-color: var(--color-plaster);
  color: var(--color-carbon);
  padding: var(--space-lg) 0 var(--space-md);
}

.footer-top {
  display: grid;
  gap: var(--space-lg);
  padding-bottom: var(--space-lg);
  border-bottom: 1px solid rgba(21, 20, 18, 0.12);
}

.footer-brand .logo {
  color: var(--color-carbon);
  margin-bottom: var(--space-sm);
}

.footer-brand p {
  font-size: 14px;
  color: rgba(31, 31, 29, 0.82);
  max-width: 320px;
}

.footer-links h4 {
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(31, 31, 29, 0.82);
  margin-bottom: var(--space-sm);
}

.footer-links ul {
  display: grid;
  gap: 10px;
}

.footer-links a {
  font-size: 14px;
}

.footer-links a:hover {
  color: var(--color-lime);
}

.footer-bottom {
  padding-top: var(--space-md);
  font-size: 12px;
  color: rgba(31, 31, 29, 0.82);
}

/* ---------- Breadcrumb / back link (partner page) ---------- */
.back-link {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-weight: 700;
  color: #FFFFFF;
  opacity: 0.75;
  margin-bottom: var(--space-sm);
}

/* ---------- Responsive ---------- */
@media (min-width: 640px) {
  .grid-2 {
    grid-template-columns: repeat(2, 1fr);
  }

  .usecase-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .logo-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

@media (min-width: 1024px) {
  .nav-desktop {
    display: block;
    margin-left: var(--space-md);
  }

  .nav-desktop ul {
    gap: 14px;
  }

  .header-cta.btn-primary {
    display: inline-flex;
  }

  .hamburger {
    display: none;
  }

  .header-actions {
    order: 0;
    margin-left: var(--space-md);
    gap: var(--space-xs);
  }
}

@media (min-width: 1120px) {
  .nav-desktop {
    margin-left: var(--space-lg);
  }

  .nav-desktop ul {
    gap: var(--space-sm);
  }

  .header-cta {
    display: inline-flex;
  }

  .header-actions {
    margin-left: var(--space-lg);
    gap: var(--space-sm);
  }
}

@media (min-width: 860px) {
  .hero .container {
    grid-template-columns: 1fr 1fr;
  }

  .grid-3 {
    grid-template-columns: repeat(3, 1fr);
  }

  .logo-grid {
    grid-template-columns: repeat(6, 1fr);
  }

  .op-row {
    font-size: 16px;
  }

  .footer-top {
    grid-template-columns: 1.4fr 1fr;
  }
}



/* ==================== SPLIT BLOCK (image + text) ==================== */
.split-block {
  display: grid;
  gap: var(--space-lg);
  align-items: center;
  margin-top: var(--space-lg);
}

.split-visual {
  border-radius: 20px;
  overflow: hidden;
  aspect-ratio: 4 / 3;
}

.split-visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

@media (min-width: 860px) {
  .split-block {
    grid-template-columns: 1fr 1fr;
  }

  .split-block.split-reverse .split-visual {
    order: 2;
  }
}

/* ==================== PITFALLS（つまづきポイント） ==================== */
.pitfall-list {
  display: grid;
  gap: var(--space-md);
  margin-top: var(--space-lg);
  align-items: stretch;
}

.pitfall-item {
  display: grid;
  grid-template-columns: auto 1fr;
  grid-template-rows: auto 1fr;
  gap: var(--space-sm);
  padding: var(--space-md);
  background-color: var(--color-mineral);
  border: 1px solid rgba(31, 31, 29, 0.1);
  border-radius: 14px;
  height: 100%;
}

.pitfall-item .num {
  font-size: 22px;
  font-weight: 700;
  color: rgba(31, 31, 29, 0.82);
  white-space: nowrap;
}

.pitfall-item h3 {
  font-size: 18px;
  margin-bottom: var(--space-xs);
}

.pitfall-item p {
  color: rgba(31, 31, 29, 0.82);
  line-height: 1.8;
}

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

  .pitfall-item {
    grid-template-columns: 1fr;
  }
}

/* ==================== SCHEDULE LIST（開催予定日程） ==================== */
.schedule-list {
  display: grid;
  gap: var(--space-xs);
  margin-bottom: var(--space-lg);
}

.schedule-item {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-xs) var(--space-sm);
  padding: 14px 18px;
  background-color: var(--color-mineral);
  border: 1px solid rgba(31, 31, 29, 0.1);
  border-radius: 10px;
}

.schedule-date {
  font-weight: 700;
  min-width: 160px;
}

.schedule-time {
  color: rgba(31, 31, 29, 0.82);
}

.schedule-seats {
  font-size: 13px;
  font-weight: 700;
  color: var(--color-lime-dark);
  background-color: rgba(21, 128, 62, 0.1);
  padding: 4px 10px;
  border-radius: 999px;
  white-space: nowrap;
}

.section-dark .schedule-item {
  background-color: rgba(255, 255, 255, 0.06);
  border-color: rgba(255, 255, 255, 0.16);
}

.section-dark .schedule-date {
  color: #FFFFFF;
}

.section-dark .schedule-time {
  color: rgba(255, 255, 255, 0.85);
}

/* ==================== COMPARE TABLE（従来工法との比較表） ==================== */
.table-scroll {
  margin-top: var(--space-lg);
  border-radius: 14px;
}

.compare-table {
  margin-top: 0;
}

.compare-table th,
.compare-table td {
  text-align: left;
  vertical-align: middle;
  line-height: 1.8;
}

/* ---------- Mobile: stacked-card layout (no horizontal scroll) ---------- */
.compare-table thead {
  display: none;
}

.compare-table,
.compare-table tbody,
.compare-table tr,
.compare-table td {
  display: block;
  width: 100%;
}

.compare-table tr {
  margin-bottom: var(--space-sm);
  border: 1px solid rgba(31, 31, 29, 0.12);
  border-radius: 14px;
  overflow: hidden;
}

.compare-table td {
  border: none;
  border-bottom: 1px solid rgba(31, 31, 29, 0.08);
}

.compare-table td:last-child {
  border-bottom: none;
}

.compare-table td[data-label]::before {
  content: attr(data-label);
  display: block;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--color-lime-dark);
  text-transform: uppercase;
  margin-bottom: 4px;
}

/* ---------- Desktop: real table layout ---------- */
@media (min-width: 768px) {
  .table-scroll {
    overflow-x: auto;
    overflow-y: hidden;
    border: 1px solid rgba(31, 31, 29, 0.12);
  }

  .compare-table {
    min-width: 640px;
    border-collapse: separate;
    border-spacing: 0;
  }

  .compare-table thead {
    display: table-header-group;
  }

  .compare-table,
  .compare-table tbody,
  .compare-table tr,
  .compare-table td {
    display: revert;
    width: auto;
  }

  .compare-table tr {
    margin-bottom: 0;
    border: none;
    border-radius: 0;
  }

  .compare-table th,
  .compare-table td {
    border: none;
    border-right: 1px solid rgba(31, 31, 29, 0.12);
    border-bottom: 1px solid rgba(31, 31, 29, 0.12);
  }

  .compare-table th:last-child,
  .compare-table td:last-child {
    border-right: none;
  }

  .compare-table tr:last-child td {
    border-bottom: none;
  }

  .compare-table td[data-label]::before {
    content: none;
  }

  .compare-table th:first-child,
  .compare-table td:first-child {
    min-width: 160px;
  }
}

.table-note {
  display: block;
  font-size: 12px;
  font-weight: 400;
  line-height: 1.6;
  color: rgba(31, 31, 29, 0.82);
  margin-top: 6px;
}

/* ==================== STICKY MOBILE CTA ==================== */
.sticky-mobile-cta {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 90;
  padding: 10px var(--space-sm);
  background-color: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(6px);
  border-top: 1px solid rgba(31, 31, 29, 0.12);
}

.sticky-mobile-cta .cta-group {
  display: flex;
}

.sticky-mobile-cta .btn {
  flex: 1;
  padding-left: 8px;
  padding-right: 8px;
  font-size: 14px;
  white-space: nowrap;
}

@media (min-width: 860px) {
  .sticky-mobile-cta {
    display: none;
  }
}


/* ==================== DATA TABLE（試験データ） ==================== */
.data-table {
  width: 100%;
  border-collapse: collapse;
  margin: var(--space-sm) 0 var(--space-md);
  font-size: 14px;
}

.data-table th,
.data-table td {
  padding: 12px 14px;
  border: 1px solid rgba(31, 31, 29, 0.12);
  text-align: center;
  vertical-align: middle;
  line-height: 1.6;
}

.data-table th {
  background-color: var(--color-carbon);
  color: #FFFFFF;
  font-weight: 700;
}

.data-table td {
  background-color: var(--color-mineral);
}

.data-table th:first-child,
.data-table td:first-child {
  text-align: left;
}

.source-note {
  font-size: 12px;
  color: rgba(31, 31, 29, 0.82);
  margin-top: -8px;
  margin-bottom: var(--space-lg);
}

.highlight-figure {
  font-size: 1.2em;
  font-weight: 800;
  color: var(--color-lime-dark);
}

.result-line {
  font-size: 15px;
  line-height: 1.9;
  white-space: normal;
}

.result-line .highlight-figure {
  font-size: 1.7em;
}

@media (min-width: 1180px) {
  .result-line {
    white-space: nowrap;
    overflow-x: auto;
    font-size: 13.5px;
    padding-bottom: 4px;
  }
}

/* ==================== INFO TABLE（会社概要） ==================== */
.info-table {
  width: 100%;
  border-collapse: collapse;
  margin: var(--space-md) 0 var(--space-lg);
  font-size: 15px;
}

.info-table th,
.info-table td {
  padding: 16px 20px;
  border-bottom: 1px solid rgba(31, 31, 29, 0.1);
  text-align: left;
  vertical-align: top;
  line-height: 1.8;
}

.info-table th {
  width: 160px;
  color: var(--color-terra);
  font-weight: 700;
  font-size: 13px;
  letter-spacing: 0.04em;
  white-space: nowrap;
}

@media (max-width: 640px) {
  .info-table,
  .info-table tbody,
  .info-table tr,
  .info-table th,
  .info-table td {
    display: block;
    width: 100%;
  }

  .info-table tr {
    padding: var(--space-sm) 0;
    border-bottom: 1px solid rgba(31, 31, 29, 0.1);
  }

  .info-table th,
  .info-table td {
    padding: 2px 0;
    border-bottom: none;
  }
}

/* ==================== LEGAL BODY（プライバシーポリシー等） ==================== */
.legal-body {
  max-width: 760px;
}

.legal-body h2 {
  font-size: 19px;
  font-weight: 700;
  margin: var(--space-lg) 0 var(--space-sm);
}

.legal-body h2:first-child {
  margin-top: 0;
}

.legal-body p {
  font-size: 15px;
  line-height: 1.95;
  color: rgba(31, 31, 29, 0.82);
  margin-bottom: var(--space-sm);
}

.legal-body ul,
.legal-body ol {
  padding-left: 1.3em;
  margin: 0 0 var(--space-sm);
  font-size: 15px;
  line-height: 1.9;
  color: rgba(31, 31, 29, 0.82);
}

.legal-body li {
  margin-bottom: 6px;
}

.legal-body .legal-updated {
  font-size: 13px;
  color: rgba(31, 31, 29, 0.82);
  margin-top: var(--space-lg);
}