:root {
  
  --c-bg:      #F5F0E8;
  --c-fg:      #2A1A0E;
  --c-muted:   #9A8470;
  --c-accent:  #7B3B1A;
  --c-light:   #EDE5D4;
  --c-dark:    #1E1208;
  --c-surface: #FAF7F2;
  --c-border:  #C8B89A;

  --space-1: 0.5rem;
  --space-2: 1rem;
  --space-3: 1.5rem;
  --space-4: 2.5rem;
  --space-5: 4rem;
  --space-6: 7rem;

  --radius-sm: 2px;
  --radius-md: 4px;
  --radius-lg: 8px;

  --font-display: 'Noto Serif JP', 'Georgia', serif;
  --font-body:    'Noto Sans JP', 'Helvetica Neue', sans-serif;

  --header-h: 72px;
}

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

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

body {
  background-color: var(--c-bg);
  color: var(--c-fg);
  font-family: var(--font-body);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

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

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

ul {
  list-style: none;
}

h1, h2, h3, h4, h5 {
  font-family: var(--font-display);
  line-height: 1.25;
  color: var(--c-fg);
}

.container {
  width: min(1140px, 100% - var(--space-4));
  margin-inline: auto;
}

.section-label {
  font-family: var(--font-body);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--c-accent);
  margin-bottom: var(--space-2);
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 3vw, 2.6rem);
  margin-bottom: var(--space-3);
  color: var(--c-fg);
}

.section-lead {
  font-size: clamp(0.95rem, 1.4vw, 1.05rem);
  color: var(--c-muted);
  max-width: 560px;
  line-height: 1.8;
}

.btn {
  display: inline-block;
  padding: 0.7em 1.8em;
  font-family: var(--font-body);
  font-size: 0.88rem;
  letter-spacing: 0.06em;
  border: 1.5px solid var(--c-accent);
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--c-accent);
  cursor: pointer;
  transition: background 0.2s, color 0.2s;
}

.btn:hover {
  background: var(--c-accent);
  color: var(--c-surface);
}

.btn-filled {
  background: var(--c-accent);
  color: var(--c-surface);
}

.btn-filled:hover {
  background: var(--c-dark);
  border-color: var(--c-dark);
}

.img-placeholder {
  background-color: var(--c-light);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
}

.img-placeholder::after {
  content: '';
  display: block;
  width: 40px;
  height: 40px;
  background: var(--c-border);
  border-radius: 50%;
  opacity: 0.5;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  height: var(--header-h);
  background: var(--c-bg);
  border-bottom: 1px solid var(--c-border);
  display: flex;
  align-items: center;
}

.site-header .container {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.site-header .logo-img {
  width: 38px;
  height: 38px;
  flex-shrink: 0;
}

.site-header .brand-name {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--c-fg);
}

.hero {
  display: grid;
  grid-template-columns: 1fr 1fr;
  min-height: calc(100vh - var(--header-h));
}

.hero-text {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: var(--space-6) var(--space-5) var(--space-6) calc((100vw - 1140px) / 2 + var(--space-4));
  background: var(--c-bg);
}

.hero-eyebrow {
  font-size: 0.72rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--c-accent);
  margin-bottom: var(--space-3);
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 5vw, 4rem);
  line-height: 1.15;
  color: var(--c-fg);
  margin-bottom: var(--space-3);
}

.hero-title span {
  color: var(--c-accent);
}

.hero-desc {
  font-size: clamp(0.95rem, 1.4vw, 1.05rem);
  color: var(--c-muted);
  max-width: 440px;
  line-height: 1.9;
  margin-bottom: var(--space-4);
}

.hero-actions {
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
}

.hero-image {
  position: relative;
  background: var(--c-light);
  border-left: 1px solid var(--c-border);
}

.hero-image .img-placeholder {
  position: absolute;
  inset: 0;
  border-radius: 0;
  border: none;
}

.hero-image .img-placeholder::after {
  display: none;
}

.hero-image-inner {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--c-light) 0%, #D9CAAF 100%);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-3);
}

.hero-image-inner svg {
  opacity: 0.25;
}

.intro {
  padding: var(--space-6) 0;
  background: var(--c-surface);
  border-top: 1px solid var(--c-border);
  border-bottom: 1px solid var(--c-border);
}

.intro .container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-5);
  align-items: center;
}

.intro-quote {
  font-family: var(--font-display);
  font-size: clamp(1.3rem, 2.2vw, 2rem);
  line-height: 1.5;
  color: var(--c-fg);
  border-left: 3px solid var(--c-accent);
  padding-left: var(--space-3);
}

.intro-body p + p {
  margin-top: var(--space-2);
}

.features {
  padding: var(--space-6) 0;
  background: var(--c-fg);
  color: var(--c-light);
}

.features .section-label {
  color: var(--c-accent);
}

.features .section-title {
  color: var(--c-light);
}

.features-header {
  margin-bottom: var(--space-5);
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  flex-wrap: wrap;
  gap: var(--space-3);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-4);
}

.feature-card {
  padding: var(--space-4);
  border: 1px solid rgba(200, 184, 154, 0.25);
  border-radius: var(--radius-md);
}

.feature-card-num {
  font-family: var(--font-display);
  font-size: 2.5rem;
  color: var(--c-accent);
  margin-bottom: var(--space-2);
  display: block;
}

.feature-card h3 {
  font-size: 1rem;
  color: var(--c-light);
  margin-bottom: var(--space-1);
}

.feature-card p {
  font-size: 0.9rem;
  color: var(--c-muted);
  line-height: 1.7;
}

.how-it-works {
  padding: var(--space-6) 0;
  background: var(--c-bg);
}

.how-it-works .container > .section-label,
.how-it-works .container > .section-title {
  text-align: center;
}

.how-it-works .container > .section-title {
  margin-inline: auto;
  margin-bottom: var(--space-5);
}

.steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-4);
  position: relative;
}

.steps::before {
  content: '';
  position: absolute;
  top: 28px;
  left: calc(12.5% + 20px);
  width: calc(75% - 40px);
  height: 1px;
  background: var(--c-border);
}

.step {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: var(--space-2);
}

.step-circle {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--c-surface);
  border: 2px solid var(--c-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-size: 1.2rem;
  color: var(--c-accent);
  position: relative;
  z-index: 10;
}

.step h3 {
  font-size: 0.95rem;
  color: var(--c-fg);
}

.step p {
  font-size: 0.85rem;
  color: var(--c-muted);
  line-height: 1.6;
}

.products {
  padding: var(--space-6) 0;
  background: var(--c-dark);
  color: var(--c-light);
}

.products .section-label {
  color: var(--c-accent);
}

.products .section-title {
  color: var(--c-light);
}

.products-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-bottom: var(--space-5);
}

.products-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-4);
}

.product-card {
  border: 1px solid rgba(200, 184, 154, 0.2);
  border-radius: var(--radius-md);
  overflow: hidden;
  background: rgba(255,255,255,0.03);
}

.product-card-image {
  height: 220px;
  background: linear-gradient(135deg, #3A2A1A 0%, #5A3C22 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  border-bottom: 1px solid rgba(200, 184, 154, 0.15);
}

.product-card-image svg {
  opacity: 0.3;
}

.product-card-body {
  padding: var(--space-3);
}

.product-card-tag {
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--c-accent);
  margin-bottom: var(--space-1);
}

.product-card-title {
  font-family: var(--font-display);
  font-size: 1.05rem;
  color: var(--c-light);
  margin-bottom: var(--space-1);
}

.product-card-author {
  font-size: 0.82rem;
  color: var(--c-muted);
  margin-bottom: var(--space-2);
}

.product-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: var(--space-2);
}

.product-price {
  font-family: var(--font-display);
  font-size: 1.2rem;
  color: var(--c-accent);
}

.capabilities {
  padding: var(--space-6) 0;
  background: var(--c-light);
  border-top: 1px solid var(--c-border);
  border-bottom: 1px solid var(--c-border);
}

.capabilities .container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-5);
  align-items: center;
}

.capabilities-image {
  height: 480px;
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
}

.capabilities-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.capability-item {
  padding: var(--space-3);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-sm);
  background: var(--c-surface);
}

.capability-item h3 {
  font-size: 1rem;
  margin-bottom: var(--space-1);
  color: var(--c-fg);
}

.capability-item p {
  font-size: 0.88rem;
  color: var(--c-muted);
  line-height: 1.6;
}

.metrics {
  padding: var(--space-6) 0;
  background: var(--c-fg);
  color: var(--c-light);
}

.metrics .container {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-4);
  text-align: center;
}

.metric-item {
  padding: var(--space-4) var(--space-2);
  border: 1px solid rgba(200, 184, 154, 0.2);
  border-radius: var(--radius-md);
}

.metric-number {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3.2rem);
  color: var(--c-accent);
  display: block;
  margin-bottom: var(--space-1);
  line-height: 1;
}

.metric-label {
  font-size: 0.88rem;
  color: var(--c-muted);
}

.testimonials {
  padding: var(--space-6) 0;
  background: var(--c-surface);
}

.testimonials .container > .section-label,
.testimonials .container > .section-title {
  text-align: center;
  margin-inline: auto;
}

.testimonials .container > .section-title {
  margin-bottom: var(--space-5);
}

.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-4);
}

.testimonial-card {
  padding: var(--space-4);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-md);
  background: var(--c-bg);
}

.testimonial-quote {
  font-family: var(--font-display);
  font-size: 0.95rem;
  line-height: 1.8;
  color: var(--c-fg);
  margin-bottom: var(--space-3);
  padding-top: var(--space-2);
  position: relative;
}

.testimonial-quote::before {
  content: '\201C';
  font-size: 3rem;
  color: var(--c-accent);
  line-height: 1;
  display: block;
  margin-bottom: var(--space-1);
  font-family: var(--font-display);
}

.testimonial-author {
  font-size: 0.82rem;
  color: var(--c-muted);
  font-weight: 600;
}

.testimonial-role {
  font-size: 0.78rem;
  color: var(--c-muted);
}

.case-study {
  padding: var(--space-6) 0;
  background: var(--c-dark);
  color: var(--c-light);
}

.case-study .container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-5);
  align-items: center;
}

.case-study-image {
  height: 400px;
  background: linear-gradient(135deg, #3A2A1A 0%, #5A3C22 60%, #7B3B1A 100%);
  border-radius: var(--radius-md);
  border: 1px solid rgba(200, 184, 154, 0.15);
  display: flex;
  align-items: center;
  justify-content: center;
}

.case-study .section-label {
  color: var(--c-accent);
}

.case-study .section-title {
  color: var(--c-light);
}

.case-study-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3);
  margin-top: var(--space-4);
}

.cs-stat {
  padding: var(--space-2);
  border-top: 2px solid var(--c-accent);
}

.cs-stat strong {
  font-family: var(--font-display);
  font-size: 1.5rem;
  color: var(--c-light);
  display: block;
}

.cs-stat span {
  font-size: 0.82rem;
  color: var(--c-muted);
}

.faq {
  padding: var(--space-6) 0;
  background: var(--c-bg);
}

.faq .container {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: var(--space-5);
  align-items: start;
}

.faq-sidebar .section-title {
  position: sticky;
  top: calc(var(--header-h) + var(--space-3));
}

.faq-list {
  display: flex;
  flex-direction: column;
}

.faq-item {
  border-bottom: 1px solid var(--c-border);
}

.faq-question {
  width: 100%;
  background: none;
  border: none;
  text-align: left;
  padding: var(--space-3) 0;
  font-family: var(--font-display);
  font-size: 1rem;
  color: var(--c-fg);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-2);
}

.faq-question::after {
  content: '+';
  font-size: 1.4rem;
  color: var(--c-accent);
  flex-shrink: 0;
  line-height: 1;
}

.faq-question[aria-expanded="true"]::after {
  content: '−';
}

.faq-answer {
  font-size: 0.9rem;
  color: var(--c-muted);
  line-height: 1.8;
  padding-bottom: var(--space-3);
  display: none;
}

.faq-answer.open {
  display: block;
}

.blog-teaser {
  padding: var(--space-6) 0;
  background: var(--c-fg);
  color: var(--c-light);
}

.blog-teaser .section-label {
  color: var(--c-accent);
}

.blog-teaser .section-title {
  color: var(--c-light);
}

.blog-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-bottom: var(--space-5);
}

.blog-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: var(--space-4);
}

.blog-card {
  border: 1px solid rgba(200, 184, 154, 0.2);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.blog-card-image {
  background: linear-gradient(135deg, #3A2A1A 0%, #4A3020 100%);
  display: flex;
  align-items: center;
  justify-content: center;
}

.blog-card-image.large {
  height: 240px;
}

.blog-card-image.small {
  height: 150px;
}

.blog-card-body {
  padding: var(--space-3);
}

.blog-card-tag {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--c-accent);
  margin-bottom: var(--space-1);
}

.blog-card-title {
  font-family: var(--font-display);
  font-size: 1rem;
  color: var(--c-light);
  line-height: 1.4;
  margin-bottom: var(--space-1);
}

.blog-card-date {
  font-size: 0.78rem;
  color: var(--c-muted);
}

.contact {
  padding: var(--space-6) 0;
  background: var(--c-light);
  border-top: 1px solid var(--c-border);
}

.contact .container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-5);
  align-items: start;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.contact-detail dt {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--c-accent);
  margin-bottom: var(--space-1);
}

.contact-detail dd {
  font-family: var(--font-display);
  font-size: 1rem;
  color: var(--c-fg);
  line-height: 1.5;
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.4em;
}

.form-group label {
  font-size: 0.82rem;
  color: var(--c-fg);
  letter-spacing: 0.04em;
}

.form-group input,
.form-group textarea {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-sm);
  padding: 0.7em 1em;
  font-family: var(--font-body);
  font-size: 0.92rem;
  color: var(--c-fg);
  resize: none;
  outline: none;
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--c-accent);
}

.site-footer {
  background: var(--c-dark);
  color: var(--c-muted);
  padding: var(--space-5) 0 var(--space-4);
  border-top: 1px solid rgba(200, 184, 154, 0.12);
}

.footer-inner {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: var(--space-5);
  padding-bottom: var(--space-4);
  border-bottom: 1px solid rgba(200, 184, 154, 0.1);
  margin-bottom: var(--space-4);
}

.footer-brand-name {
  font-family: var(--font-display);
  font-size: 1.3rem;
  color: var(--c-light);
  margin-bottom: var(--space-2);
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.footer-brand-name img {
  width: 28px;
  height: 28px;
  opacity: 0.9;
}

.footer-desc {
  font-size: 0.85rem;
  line-height: 1.8;
  max-width: 320px;
}

.footer-col h4 {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--c-light);
  margin-bottom: var(--space-2);
}

.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.footer-col ul a {
  font-size: 0.85rem;
  color: var(--c-muted);
  transition: color 0.2s;
}

.footer-col ul a:hover {
  color: var(--c-light);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.footer-copy {
  font-size: 0.78rem;
  color: var(--c-muted);
}

.cookie-banner {
  position: fixed;
  bottom: var(--space-3);
  left: 50%;
  transform: translateX(-50%);
  z-index: 1000;
  background: var(--c-dark);
  color: var(--c-light);
  border: 1px solid rgba(200, 184, 154, 0.2);
  border-radius: var(--radius-md);
  padding: var(--space-3) var(--space-4);
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-wrap: wrap;
  max-width: 700px;
  width: calc(100% - var(--space-4));
}

.cookie-banner p {
  font-size: 0.85rem;
  flex: 1;
  line-height: 1.6;
  color: var(--c-muted);
}

.cookie-banner p a {
  color: var(--c-accent);
  text-decoration: underline;
}

.cookie-banner-actions {
  display: flex;
  gap: var(--space-2);
  flex-shrink: 0;
}

.cookie-banner.hidden {
  display: none;
}

@media (max-width: 1024px) {
  .hero {
    grid-template-columns: 1fr;
    min-height: auto;
  }

  .hero-text {
    padding: var(--space-5) var(--space-4);
    order: 2;
  }

  .hero-image {
    height: 50vw;
    order: 1;
    border-left: none;
    border-bottom: 1px solid var(--c-border);
  }

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

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

  .steps::before {
    display: none;
  }

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

  .capabilities .container {
    grid-template-columns: 1fr;
  }

  .capabilities-image {
    height: 320px;
  }

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

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

  .case-study .container {
    grid-template-columns: 1fr;
  }

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

  .blog-grid .blog-card:first-child {
    grid-column: span 2;
  }

  .contact .container {
    grid-template-columns: 1fr;
  }

  .intro .container {
    grid-template-columns: 1fr;
    gap: var(--space-4);
  }

  .faq .container {
    grid-template-columns: 1fr;
  }

  .faq-sidebar .section-title {
    position: static;
  }

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

@media (max-width: 640px) {
  :root {
    --space-5: 3rem;
    --space-6: 4.5rem;
  }

  .hero-image {
    height: 60vw;
  }

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

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

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

  .metrics .container {
    grid-template-columns: 1fr 1fr;
  }

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

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

  .blog-grid .blog-card:first-child {
    grid-column: span 1;
  }

  .footer-inner {
    grid-template-columns: 1fr;
    gap: var(--space-4);
  }

  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
  }

  .case-study-stats {
    grid-template-columns: 1fr 1fr;
  }

  .hero-actions {
    flex-direction: column;
    align-items: flex-start;
  }

  .features-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .products-header {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; scroll-behavior: auto !important; }
}

a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible, select:focus-visible, [tabindex]:focus-visible { outline: 2px solid currentColor; outline-offset: 2px; }

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

/* wh-img-fill */
.blog-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}