/* ============================================
   Zebra Forest Co., Ltd. — Main Stylesheet
   ============================================ */

:root {
  /* Color palette - 墨・生成り・苔・土 */
  --c-sumi: #1a1a18;          /* 墨に近い黒 */
  --c-sumi-light: #2d2d2a;
  --c-kinari: #f5f2eb;         /* 生成り */
  --c-kinari-dark: #ebe6d9;
  --c-washi: #faf8f3;          /* 和紙のような白 */
  --c-koke: #4a5a3d;           /* 苔色 */
  --c-koke-deep: #2f3a27;      /* 深い苔 */
  --c-tsuchi: #8b6f47;         /* 土 */
  --c-tsuchi-light: #c4a878;
  --c-line: rgba(26,26,24,0.12);
  --c-line-light: rgba(26,26,24,0.06);
  --c-text-muted: rgba(26,26,24,0.55);

  /* Typography */
  --font-serif: "Noto Serif JP", "YuMincho", "游明朝", serif;
  --font-sans: "Noto Sans JP", "Hiragino Sans", "Yu Gothic", sans-serif;
  --font-display: "Cormorant Garamond", serif;

  /* Spacing */
  --container: 1200px;
  --container-narrow: 900px;

  /* Transitions */
  --ease: cubic-bezier(0.22, 0.61, 0.36, 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);
  font-weight: 400;
  line-height: 1.9;
  color: var(--c-sumi);
  background: var(--c-washi);
  -webkit-font-smoothing: antialiased;
  letter-spacing: 0.03em;
  overflow-x: hidden;
}

img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
button { border: none; background: none; cursor: pointer; font: inherit; color: inherit; }

.section-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 40px;
}

/* ============================================
   Section Label
   ============================================ */
.section-label {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-bottom: 60px;
}
.section-label.centered {
  align-items: center;
  text-align: center;
}
.section-label .label-en {
  font-family: var(--font-display);
  font-size: 13px;
  font-style: italic;
  letter-spacing: 0.15em;
  color: var(--c-koke);
  font-weight: 400;
}
.section-label .label-jp {
  font-family: var(--font-serif);
  font-size: 14px;
  letter-spacing: 0.2em;
  color: var(--c-sumi);
  font-weight: 500;
}
.section-label.light .label-en { color: var(--c-tsuchi-light); }
.section-label.light .label-jp { color: var(--c-kinari); }

/* ============================================
   Header
   ============================================ */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 20px 40px;
  transition: all 0.5s var(--ease);
  background: transparent;
}
.site-header.scrolled {
  background: rgba(250, 248, 243, 0.95);
  backdrop-filter: blur(10px);
  padding: 14px 40px;
  border-bottom: 1px solid var(--c-line-light);
}

.header-inner {
  max-width: var(--container);
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  display: flex;
  flex-direction: column;
  gap: 2px;
  line-height: 1;
  color: var(--c-kinari);
  transition: color 0.5s var(--ease);
}
.site-header.scrolled .logo { color: var(--c-sumi); }

.logo-en {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 500;
  letter-spacing: 0.25em;
}
.logo-jp {
  font-family: var(--font-serif);
  font-size: 11px;
  letter-spacing: 0.15em;
  opacity: 0.85;
}

.nav-primary {
  display: flex;
  gap: 40px;
  align-items: center;
}
.nav-primary a {
  font-family: var(--font-serif);
  font-size: 14px;
  font-weight: 400;
  color: var(--c-kinari);
  letter-spacing: 0.1em;
  position: relative;
  transition: color 0.3s var(--ease);
}
.site-header.scrolled .nav-primary a { color: var(--c-sumi); }

.nav-primary a:not(.nav-contact)::after {
  content: '';
  position: absolute;
  left: 0; bottom: -6px;
  width: 0; height: 1px;
  background: currentColor;
  transition: width 0.3s var(--ease);
}
.nav-primary a:not(.nav-contact):hover::after { width: 100%; }

.nav-contact {
  padding: 10px 24px;
  border: 1px solid currentColor;
  transition: all 0.3s var(--ease);
}
.nav-contact:hover {
  background: var(--c-kinari);
  color: var(--c-sumi) !important;
}
.site-header.scrolled .nav-contact:hover {
  background: var(--c-sumi);
  color: var(--c-kinari) !important;
}

.menu-toggle { display: none; }

/* ============================================
   Hero
   ============================================ */
.hero {
  position: relative;
  height: 100vh;
  min-height: 720px;
  overflow: hidden;
  display: flex;
  align-items: center;
  color: var(--c-kinari);
}

.hero-image {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  transform: scale(1.05);
  animation: heroZoom 20s var(--ease) forwards;
}
@keyframes heroZoom {
  to { transform: scale(1); }
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to bottom,
    rgba(26,26,24,0.55) 0%,
    rgba(26,26,24,0.35) 40%,
    rgba(26,26,24,0.65) 100%
  );
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 60px;
  width: 100%;
}

.hero-eyebrow {
  display: flex;
  align-items: center;
  gap: 16px;
  font-family: var(--font-display);
  font-style: italic;
  font-size: 14px;
  letter-spacing: 0.2em;
  margin-bottom: 40px;
  opacity: 0;
  animation: fadeInUp 1s var(--ease) 0.3s forwards;
}
.hero-eyebrow .line {
  width: 50px;
  height: 1px;
  background: var(--c-kinari);
}

.hero-title {
  font-family: var(--font-serif);
  font-size: clamp(48px, 7.5vw, 96px);
  font-weight: 500;
  line-height: 1.3;
  letter-spacing: 0.05em;
  margin-bottom: 24px;
}
.hero-title span {
  display: block;
  opacity: 0;
  transform: translateY(30px);
  animation: fadeInUp 1.2s var(--ease) forwards;
}
.hero-title span.reveal:nth-child(1) { animation-delay: 0.5s; }
.hero-title span.reveal:nth-child(2) { animation-delay: 0.8s; }

.hero-subtitle {
  font-family: var(--font-serif);
  font-size: clamp(18px, 2vw, 24px);
  font-weight: 300;
  letter-spacing: 0.15em;
  margin-bottom: 40px;
  opacity: 0;
  animation: fadeInUp 1s var(--ease) 1.2s forwards;
}

.hero-description {
  font-size: 15px;
  line-height: 2;
  max-width: 560px;
  opacity: 0;
  animation: fadeInUp 1s var(--ease) 1.5s forwards;
  font-weight: 300;
}

@keyframes fadeInUp {
  to { opacity: 1; transform: translateY(0); }
}

.hero-scroll {
  position: absolute;
  right: 60px;
  bottom: 40px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  z-index: 2;
}
.hero-scroll span {
  font-family: var(--font-display);
  font-style: italic;
  font-size: 12px;
  letter-spacing: 0.25em;
  writing-mode: vertical-rl;
  opacity: 0.7;
}
.scroll-line {
  width: 1px;
  height: 80px;
  background: var(--c-kinari);
  position: relative;
  overflow: hidden;
}
.scroll-line::after {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 30%;
  background: var(--c-sumi);
  animation: scrollLine 2s ease-in-out infinite;
}
@keyframes scrollLine {
  0% { top: -30%; }
  100% { top: 100%; }
}

/* ============================================
   Concept
   ============================================ */
.concept {
  padding: 160px 0;
  background: var(--c-washi);
  position: relative;
}
.concept::before {
  content: '';
  position: absolute;
  top: 0; left: 50%;
  width: 1px; height: 80px;
  background: var(--c-sumi);
  opacity: 0.2;
}

.concept-title {
  font-family: var(--font-serif);
  font-size: clamp(40px, 6vw, 72px);
  font-weight: 400;
  line-height: 1.5;
  letter-spacing: 0.08em;
  margin-bottom: 80px;
  max-width: 700px;
}
.concept-title span {
  display: inline-block;
}

.concept-body {
  max-width: 640px;
  margin-left: auto;
  margin-right: 0;
}
.concept-body p {
  font-family: var(--font-serif);
  font-size: 17px;
  line-height: 2.2;
  margin-bottom: 28px;
  letter-spacing: 0.08em;
  color: var(--c-sumi-light);
  font-weight: 400;
}
.concept-body p:last-child { margin-bottom: 0; }

/* ============================================
   Strengths
   ============================================ */
.strengths {
  padding: 140px 0;
  background: var(--c-kinari);
  position: relative;
}

.strengths-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  border-top: 1px solid var(--c-line);
}

.strength-card {
  padding: 60px 40px;
  border-right: 1px solid var(--c-line);
  border-bottom: 1px solid var(--c-line);
  position: relative;
  transition: background 0.5s var(--ease);
}
.strength-card:last-child { border-right: none; }
.strength-card:hover {
  background: var(--c-washi);
}

.strength-number {
  font-family: var(--font-display);
  font-size: 60px;
  font-weight: 300;
  color: var(--c-koke);
  line-height: 1;
  margin-bottom: 32px;
  font-style: italic;
}

.strength-title {
  font-family: var(--font-serif);
  font-size: 22px;
  font-weight: 500;
  letter-spacing: 0.08em;
  margin-bottom: 20px;
  line-height: 1.5;
}

.strength-body {
  font-size: 14px;
  line-height: 2;
  color: var(--c-text-muted);
  letter-spacing: 0.05em;
}

/* ============================================
   Services
   ============================================ */
.services {
  padding: 140px 0;
  background: var(--c-washi);
}

.services-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
}

.service-card {
  display: block;
  color: inherit;
  transition: transform 0.5s var(--ease);
}
.service-card:hover { transform: translateY(-4px); }
.service-card:hover .service-image img { transform: scale(1.03); }

.service-image {
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background: var(--c-kinari-dark);
  margin-bottom: 32px;
}
.service-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 1s var(--ease);
}

.service-content { padding: 0 8px; }

.service-subtitle {
  font-family: var(--font-display);
  font-style: italic;
  font-size: 13px;
  letter-spacing: 0.15em;
  color: var(--c-koke);
  margin-bottom: 12px;
}

.service-title {
  font-family: var(--font-serif);
  font-size: 28px;
  font-weight: 500;
  letter-spacing: 0.06em;
  margin-bottom: 16px;
  line-height: 1.5;
}

.service-body {
  font-size: 14px;
  line-height: 2;
  color: var(--c-text-muted);
  margin-bottom: 24px;
}

.service-link {
  font-family: var(--font-serif);
  font-size: 14px;
  letter-spacing: 0.1em;
  color: var(--c-sumi);
  border-bottom: 1px solid var(--c-sumi);
  padding-bottom: 4px;
  transition: all 0.3s var(--ease);
}
.service-card:hover .service-link {
  color: var(--c-koke);
  border-bottom-color: var(--c-koke);
}

/* ============================================
   Service Detail
   ============================================ */
.service-detail {
  padding: 140px 0;
  background: var(--c-kinari);
}
.service-detail.contractors {
  background: var(--c-koke-deep);
  color: var(--c-kinari);
}

.detail-header {
  margin-bottom: 60px;
  max-width: var(--container-narrow);
}

.detail-eyebrow {
  font-family: var(--font-display);
  font-style: italic;
  font-size: 14px;
  letter-spacing: 0.2em;
  color: var(--c-koke);
  margin-bottom: 24px;
}
.service-detail.contractors .detail-eyebrow {
  color: var(--c-tsuchi-light);
}

.detail-title {
  font-family: var(--font-serif);
  font-size: clamp(36px, 5vw, 56px);
  font-weight: 500;
  line-height: 1.5;
  letter-spacing: 0.06em;
}

.detail-body {
  max-width: var(--container-narrow);
}
.detail-body p {
  font-family: var(--font-serif);
  font-size: 16px;
  line-height: 2.2;
  margin-bottom: 24px;
  letter-spacing: 0.06em;
  color: var(--c-sumi-light);
}
.service-detail.contractors .detail-body p {
  color: rgba(245, 242, 235, 0.85);
}
.detail-body strong {
  font-weight: 500;
  color: var(--c-sumi);
  background: linear-gradient(transparent 60%, rgba(139, 111, 71, 0.2) 60%);
  padding: 0 2px;
}
.service-detail.contractors .detail-body strong {
  color: var(--c-kinari);
  background: linear-gradient(transparent 60%, rgba(196, 168, 120, 0.3) 60%);
}

/* ============================================
   Process
   ============================================ */
.process {
  padding: 140px 0;
  background: var(--c-washi);
}

.process-list {
  list-style: none;
  max-width: var(--container-narrow);
  margin: 0 auto;
}

.process-item {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 40px;
  padding: 40px 0;
  border-bottom: 1px solid var(--c-line);
  align-items: start;
  position: relative;
  transition: padding 0.4s var(--ease);
}
.process-item:first-child { border-top: 1px solid var(--c-line); }
.process-item:hover { padding-left: 16px; }

.process-num {
  font-family: var(--font-display);
  font-size: 48px;
  font-weight: 300;
  color: var(--c-koke);
  line-height: 1;
  font-style: italic;
}

.process-item.highlighted {
  background: var(--c-kinari);
  margin: 0 -24px;
  padding: 40px 24px;
  border: 1px solid var(--c-tsuchi);
  border-left: 3px solid var(--c-tsuchi);
}
.process-item.highlighted .process-num {
  color: var(--c-tsuchi);
}
.process-item.highlighted .process-content h3::after {
  content: '早期お支払い';
  display: inline-block;
  margin-left: 12px;
  padding: 2px 10px;
  font-family: var(--font-sans);
  font-size: 11px;
  letter-spacing: 0.1em;
  background: var(--c-tsuchi);
  color: var(--c-kinari);
  font-weight: 500;
  vertical-align: middle;
}

.process-content h3 {
  font-family: var(--font-serif);
  font-size: 22px;
  font-weight: 500;
  letter-spacing: 0.08em;
  margin-bottom: 12px;
  line-height: 1.5;
}

.process-content p {
  font-size: 14px;
  line-height: 2;
  color: var(--c-text-muted);
  letter-spacing: 0.05em;
}

/* ============================================
   Record
   ============================================ */
.record {
  position: relative;
  padding: 160px 0;
  color: var(--c-kinari);
  overflow: hidden;
}

.record-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  filter: grayscale(0.2);
}
.record-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    135deg,
    rgba(26,26,24,0.92) 0%,
    rgba(47,58,39,0.88) 100%
  );
}
.record .section-inner {
  position: relative;
  z-index: 2;
  text-align: center;
}

.record-title {
  font-family: var(--font-serif);
  font-size: clamp(36px, 5.5vw, 60px);
  font-weight: 500;
  line-height: 1.5;
  letter-spacing: 0.08em;
  margin-bottom: 32px;
}

.record-intro {
  font-family: var(--font-serif);
  font-size: 15px;
  line-height: 2.2;
  letter-spacing: 0.1em;
  opacity: 0.85;
  margin-bottom: 80px;
}

.record-stats {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 48px;
  margin-bottom: 48px;
  flex-wrap: wrap;
}
.stat { text-align: center; }
.stat-num {
  font-family: var(--font-display);
  font-size: clamp(52px, 7.5vw, 92px);
  font-weight: 300;
  line-height: 1;
  color: var(--c-tsuchi-light);
  font-style: italic;
  letter-spacing: 0.02em;
}
.stat-unit {
  font-family: var(--font-serif);
  font-size: 0.35em;
  font-style: normal;
  margin-left: 8px;
  letter-spacing: 0.1em;
}
.stat-label {
  font-family: var(--font-serif);
  font-size: 12px;
  letter-spacing: 0.3em;
  margin-top: 12px;
  opacity: 0.7;
}
.stat-divider {
  width: 1px;
  height: 56px;
  background: rgba(245, 242, 235, 0.2);
}

.record-areas {
  font-family: var(--font-serif);
  font-size: 13px;
  letter-spacing: 0.15em;
  text-align: center;
  margin-bottom: 60px;
  opacity: 0.75;
}

.record-list {
  list-style: none;
  max-width: 560px;
  margin: 0 auto;
}
.record-list li {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding: 18px 0;
  border-bottom: 1px solid rgba(245, 242, 235, 0.15);
  font-family: var(--font-serif);
  font-size: 15px;
  letter-spacing: 0.1em;
}
.record-list li:last-child { border-bottom: none; }
.record-list .loc { opacity: 0.9; }
.record-list .area {
  font-family: var(--font-display);
  font-style: italic;
  font-size: 18px;
  color: var(--c-tsuchi-light);
}

.record-note {
  font-family: var(--font-serif);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-align: center;
  margin-top: 28px;
  opacity: 0.6;
}

/* ============================================
   CTA
   ============================================ */
.cta {
  padding: 140px 0;
  background: var(--c-washi);
  text-align: center;
}

.cta-title {
  font-family: var(--font-serif);
  font-size: clamp(32px, 4.5vw, 48px);
  font-weight: 500;
  line-height: 1.5;
  letter-spacing: 0.08em;
  margin-bottom: 32px;
}

.cta-body {
  font-family: var(--font-serif);
  font-size: 15px;
  line-height: 2.2;
  letter-spacing: 0.08em;
  color: var(--c-text-muted);
  margin-bottom: 64px;
}

.cta-buttons {
  display: flex;
  justify-content: center;
  gap: 24px;
  max-width: 820px;
  margin: 0 auto;
  flex-wrap: wrap;
}

.btn-primary, .btn-secondary {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 32px 48px;
  min-width: 340px;
  transition: all 0.4s var(--ease);
  border: 1px solid var(--c-sumi);
}
.btn-primary {
  background: var(--c-sumi);
  color: var(--c-kinari);
}
.btn-primary:hover {
  background: var(--c-koke-deep);
  border-color: var(--c-koke-deep);
  transform: translateY(-2px);
}
.btn-secondary {
  background: transparent;
  color: var(--c-sumi);
}
.btn-secondary:hover {
  background: var(--c-sumi);
  color: var(--c-kinari);
  transform: translateY(-2px);
}

.btn-label {
  font-family: var(--font-serif);
  font-size: 12px;
  letter-spacing: 0.2em;
  opacity: 0.7;
  margin-bottom: 8px;
}
.btn-main {
  font-family: var(--font-display);
  font-size: 28px;
  font-weight: 400;
  letter-spacing: 0.08em;
  line-height: 1;
}
.btn-hours {
  font-family: var(--font-serif);
  font-size: 11px;
  letter-spacing: 0.15em;
  margin-top: 10px;
  opacity: 0.65;
}
.btn-secondary .btn-main {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-serif);
  font-size: 16px;
}

/* ============================================
   Contact Form
   ============================================ */
.contact-form {
  padding: 120px 0;
  background: var(--c-kinari);
  border-top: 1px solid var(--c-line);
}

.form-title {
  font-family: var(--font-serif);
  font-size: 28px;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-align: center;
  margin-bottom: 60px;
}

.form {
  max-width: 640px;
  margin: 0 auto;
}

.form-row { margin-bottom: 32px; }

.form-row label {
  display: block;
  font-family: var(--font-serif);
  font-size: 13px;
  letter-spacing: 0.1em;
  margin-bottom: 10px;
  font-weight: 500;
}

.required {
  display: inline-block;
  padding: 1px 8px;
  margin-left: 8px;
  background: var(--c-sumi);
  color: var(--c-kinari);
  font-family: var(--font-sans);
  font-size: 10px;
  font-weight: 400;
  letter-spacing: 0.1em;
  vertical-align: middle;
}

.form-row input,
.form-row select,
.form-row textarea {
  width: 100%;
  padding: 14px 18px;
  border: 1px solid var(--c-line);
  background: var(--c-washi);
  font-family: var(--font-sans);
  font-size: 15px;
  color: var(--c-sumi);
  transition: border 0.3s var(--ease);
}
.form-row input:focus,
.form-row select:focus,
.form-row textarea:focus {
  outline: none;
  border-color: var(--c-koke);
}
.form-row textarea { resize: vertical; min-height: 140px; line-height: 1.8; }

.form-submit {
  display: block;
  width: 100%;
  padding: 20px;
  background: var(--c-sumi);
  color: var(--c-kinari);
  font-family: var(--font-serif);
  font-size: 15px;
  letter-spacing: 0.25em;
  margin-top: 20px;
  transition: all 0.3s var(--ease);
  border: 1px solid var(--c-sumi);
}
.form-submit:hover {
  background: var(--c-koke-deep);
  border-color: var(--c-koke-deep);
  letter-spacing: 0.3em;
}

/* ============================================
   Button Arrow (secondary button)
   ============================================ */
.btn-arrow {
  font-family: var(--font-display);
  font-size: 20px;
  transition: transform 0.3s var(--ease);
}
.btn-secondary:hover .btn-arrow { transform: translateX(4px); }

/* ============================================
   Company Section
   ============================================ */
.company {
  padding: 140px 0;
  background: var(--c-kinari);
  border-top: 1px solid var(--c-line);
}

.company-grid {
  max-width: var(--container-narrow);
  margin: 0 auto;
}

.company-details {
  display: flex;
  flex-direction: column;
}

.company-row {
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: 40px;
  padding: 28px 0;
  border-bottom: 1px solid var(--c-line);
  align-items: start;
}
.company-row:first-child { border-top: 1px solid var(--c-line); }

.company-row dt {
  font-family: var(--font-serif);
  font-size: 13px;
  letter-spacing: 0.25em;
  color: var(--c-koke);
  font-weight: 500;
  padding-top: 4px;
}

.company-row dd {
  font-family: var(--font-serif);
  font-size: 16px;
  line-height: 1.9;
  letter-spacing: 0.08em;
  color: var(--c-sumi);
}

.company-row dd a {
  border-bottom: 1px solid transparent;
  transition: border 0.3s var(--ease);
}
.company-row dd a:hover {
  border-bottom-color: var(--c-sumi);
}

.company-name-jp {
  display: block;
  font-size: 18px;
  font-weight: 500;
  margin-bottom: 4px;
}

.company-name-en {
  display: block;
  font-family: var(--font-display);
  font-style: italic;
  font-size: 13px;
  letter-spacing: 0.15em;
  color: var(--c-text-muted);
}

/* ============================================
   Form Additions
   ============================================ */
.form-intro {
  font-family: var(--font-serif);
  font-size: 14px;
  line-height: 2;
  letter-spacing: 0.08em;
  color: var(--c-text-muted);
  text-align: center;
  margin-bottom: 50px;
  margin-top: -40px;
}

.form-privacy {
  font-size: 12px;
  line-height: 2;
  letter-spacing: 0.05em;
  color: var(--c-text-muted);
  text-align: center;
  margin-top: 32px;
  margin-bottom: 20px;
}

/* ============================================
   Footer
   ============================================ */
.site-footer {
  background: var(--c-sumi);
  color: var(--c-kinari);
  padding: 100px 0 40px;
}

.footer-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 40px;
}

.footer-main {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  padding-bottom: 60px;
  border-bottom: 1px solid rgba(245, 242, 235, 0.1);
}

.footer-brand {
  display: flex;
  flex-direction: column;
}

.footer-info {
  display: flex;
  flex-direction: column;
}

.footer-logo {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-bottom: 24px;
}
.footer-logo .logo-en {
  font-family: var(--font-display);
  font-size: 24px;
  letter-spacing: 0.3em;
}
.footer-logo .logo-jp {
  font-family: var(--font-serif);
  font-size: 13px;
  letter-spacing: 0.15em;
  opacity: 0.7;
}

.footer-tagline {
  font-family: var(--font-serif);
  font-size: 14px;
  letter-spacing: 0.15em;
  opacity: 0.7;
  line-height: 2;
}

.footer-details {
  display: grid;
  grid-template-columns: 100px 1fr;
  row-gap: 16px;
  column-gap: 24px;
  font-size: 13px;
  font-family: var(--font-serif);
  line-height: 1.8;
}
.footer-details dt {
  opacity: 0.5;
  letter-spacing: 0.1em;
}
.footer-details dd { letter-spacing: 0.05em; }
.footer-details a { transition: opacity 0.3s; }
.footer-details a:hover { opacity: 0.7; }

.footer-bottom {
  padding-top: 40px;
  display: flex;
  justify-content: space-between;
  font-family: var(--font-display);
  font-size: 12px;
  letter-spacing: 0.2em;
  opacity: 0.5;
  font-style: italic;
}

/* ============================================
   Animations
   ============================================ */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 1s var(--ease), transform 1s var(--ease);
}
.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ============================================
   Responsive
   ============================================ */
@media (max-width: 900px) {
  .section-inner, .header-inner, .footer-inner { padding: 0 24px; }
  .hero-content { padding: 0 24px; }
  .hero-scroll { display: none; }

  .nav-primary {
    position: fixed;
    top: 0; right: -100%;
    width: 80%;
    max-width: 360px;
    height: 100vh;
    background: var(--c-sumi);
    flex-direction: column;
    justify-content: center;
    gap: 28px;
    padding: 40px;
    transition: right 0.4s var(--ease);
  }
  .nav-primary.open { right: 0; }
  .nav-primary a { color: var(--c-kinari); font-size: 18px; }
  .site-header.scrolled .nav-primary a { color: var(--c-kinari); }

  .menu-toggle {
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 6px;
    width: 32px; height: 32px;
    z-index: 101;
  }
  .menu-toggle span {
    display: block;
    width: 28px; height: 1px;
    background: var(--c-kinari);
    transition: all 0.3s var(--ease);
  }
  .site-header.scrolled .menu-toggle span { background: var(--c-sumi); }
  .menu-toggle.open span { background: var(--c-kinari); }
  .menu-toggle.open span:nth-child(1) { transform: translateY(3.5px) rotate(45deg); }
  .menu-toggle.open span:nth-child(2) { opacity: 0; }
  .menu-toggle.open span:nth-child(3) { transform: translateY(-3.5px) rotate(-45deg); }

  .concept, .strengths, .services, .service-detail, .process, .record, .cta, .contact-form, .company {
    padding: 100px 0;
  }

  .strengths-grid { grid-template-columns: 1fr; }
  .strength-card { border-right: none; }

  .services-grid { grid-template-columns: 1fr; gap: 40px; }

  .process-item { grid-template-columns: 80px 1fr; gap: 24px; }
  .process-num { font-size: 36px; }

  .company-row {
    grid-template-columns: 1fr;
    gap: 8px;
    padding: 20px 0;
  }
  .company-row dt { padding-top: 0; }

  .record-stats { gap: 28px; }
  .stat-divider { display: none; }

  .footer-main { grid-template-columns: 1fr; gap: 40px; }
  .footer-bottom { flex-direction: column; gap: 12px; text-align: center; }

  .btn-primary, .btn-secondary { min-width: 100%; padding: 24px 32px; }
  .cta-buttons { flex-direction: column; gap: 16px; }
}

@media (max-width: 600px) {
  .hero { min-height: 600px; }
  .hero-title { font-size: 44px; }
  .concept-title, .detail-title, .record-title, .cta-title { font-size: 32px; }
  .stat-num { font-size: 56px; }
}