/* ============================================
   MONO設備 - Ultra Minimal Monochrome
   ============================================ */

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

:root {
  --black: #0A0A0A;
  --white: #FFFFFF;
  --gray: #888888;
  --gray-light: #E8E8E8;
  --gray-bg: #F7F7F7;
  --font-en: 'DM Sans', sans-serif;
  --font-jp: 'Noto Sans JP', sans-serif;
  --header-h: 72px;
}

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

body {
  font-family: var(--font-jp);
  font-weight: 300;
  color: var(--black);
  background: var(--white);
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

a {
  color: inherit;
  text-decoration: none;
  transition: opacity 0.3s;
}

a:hover {
  opacity: 0.6;
}

ul {
  list-style: none;
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}

/* --- Sample Banner --- */
.sample-banner {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 10000;
  background: var(--black);
  color: var(--white);
  text-align: center;
  padding: 8px 16px;
  font-size: 12px;
  font-weight: 400;
  letter-spacing: 0.05em;
}

.sample-banner a {
  color: var(--white);
  text-decoration: underline;
  text-underline-offset: 2px;
}

/* --- Header --- */
.header {
  position: fixed;
  top: 36px;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--gray-light);
  transition: background 0.3s, box-shadow 0.3s;
}

.header.scrolled {
  box-shadow: 0 1px 0 rgba(0,0,0,0.05);
}

.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
}

.logo-text {
  font-family: var(--font-jp);
  font-size: 16px;
  font-weight: 500;
  letter-spacing: 0.1em;
}

.nav-desktop {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-desktop a {
  font-size: 12px;
  font-weight: 400;
  letter-spacing: 0.08em;
  color: var(--black);
  transition: color 0.3s;
}

.nav-desktop .nav-contact {
  border: 1px solid var(--black);
  padding: 8px 20px;
  font-size: 11px;
  letter-spacing: 0.1em;
  transition: background 0.3s, color 0.3s;
}

.nav-desktop .nav-contact:hover {
  background: var(--black);
  color: var(--white);
  opacity: 1;
}

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 6px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  z-index: 1100;
}

.hamburger span {
  display: block;
  width: 24px;
  height: 1px;
  background: var(--black);
  transition: transform 0.3s, opacity 0.3s;
}

.hamburger.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.hamburger.active span:nth-child(2) {
  opacity: 0;
}

.hamburger.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Mobile Nav */
.mobile-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 1050;
  background: var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.4s, visibility 0.4s;
}

.mobile-nav.active {
  opacity: 1;
  visibility: visible;
}

.mobile-nav-inner {
  text-align: center;
}

.mobile-nav-links {
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.mobile-nav-links a {
  font-size: 18px;
  font-weight: 300;
  letter-spacing: 0.15em;
  color: var(--black);
  transition: opacity 0.3s;
}

.mobile-nav-info {
  margin-top: 48px;
  padding-top: 32px;
  border-top: 1px solid var(--gray-light);
}

.mobile-nav-phone {
  font-family: var(--font-en);
  font-size: 20px;
  font-weight: 300;
  letter-spacing: 0.1em;
}

.mobile-nav-hours {
  font-size: 12px;
  color: var(--gray);
  margin-top: 4px;
}

/* --- Hero --- */
.hero {
  position: relative;
  height: 100vh;
  min-height: 600px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  margin-top: 36px;
}

.hero-bg {
  position: absolute;
  inset: 0;
}

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

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to bottom,
    rgba(255,255,255,0.3) 0%,
    rgba(255,255,255,0.6) 40%,
    rgba(255,255,255,0.85) 100%
  );
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: 0 24px;
}

.hero-label {
  font-family: var(--font-en);
  font-size: 11px;
  font-weight: 400;
  letter-spacing: 0.3em;
  color: var(--gray);
  margin-bottom: 24px;
}

.hero-title {
  font-size: clamp(32px, 6vw, 56px);
  font-weight: 300;
  letter-spacing: 0.15em;
  line-height: 1.5;
  margin-bottom: 24px;
}

.hero-sub {
  font-size: 14px;
  font-weight: 300;
  color: var(--gray);
  line-height: 2;
  margin-bottom: 40px;
}

.hero-cta {
  display: inline-block;
  border: 1px solid var(--black);
  padding: 14px 48px;
  font-size: 12px;
  letter-spacing: 0.15em;
  font-weight: 400;
  transition: background 0.3s, color 0.3s;
}

.hero-cta:hover {
  background: var(--black);
  color: var(--white);
  opacity: 1;
}

.hero-scroll {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}

.hero-scroll span {
  font-family: var(--font-en);
  font-size: 9px;
  letter-spacing: 0.2em;
  color: var(--gray);
}

.hero-scroll-line {
  width: 1px;
  height: 40px;
  background: var(--gray);
  animation: scrollLine 2s ease-in-out infinite;
}

@keyframes scrollLine {
  0% { transform: scaleY(0); transform-origin: top; }
  50% { transform: scaleY(1); transform-origin: top; }
  51% { transform: scaleY(1); transform-origin: bottom; }
  100% { transform: scaleY(0); transform-origin: bottom; }
}

/* --- Numbers --- */
.numbers {
  padding: 80px 0;
  border-bottom: 1px solid var(--gray-light);
}

.numbers-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  text-align: center;
}

.number-item {
  padding: 20px 0;
}

.number-value {
  font-family: var(--font-en);
  font-size: 48px;
  font-weight: 300;
  letter-spacing: -0.02em;
  line-height: 1;
}

.number-unit {
  font-size: 14px;
  font-weight: 300;
  margin-left: 2px;
}

.number-label {
  display: block;
  font-size: 11px;
  color: var(--gray);
  margin-top: 8px;
  letter-spacing: 0.05em;
}

/* --- Section Common --- */
.section-label {
  font-family: var(--font-en);
  font-size: 10px;
  font-weight: 400;
  letter-spacing: 0.3em;
  color: var(--gray);
  text-align: center;
  margin-bottom: 16px;
}

.section-title {
  font-size: clamp(24px, 4vw, 32px);
  font-weight: 300;
  letter-spacing: 0.1em;
  text-align: center;
  margin-bottom: 16px;
}

.section-lead {
  font-size: 14px;
  font-weight: 300;
  color: var(--gray);
  text-align: center;
  line-height: 2;
  margin-bottom: 64px;
}

/* --- Philosophy --- */
.philosophy {
  padding: 120px 0;
}

.philosophy-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 48px;
}

.philosophy-card {
  text-align: center;
}

.philosophy-diagram {
  width: 160px;
  height: 160px;
  margin: 0 auto 24px;
}

.philosophy-diagram svg {
  width: 100%;
  height: 100%;
}

.philosophy-card h3 {
  font-family: var(--font-en);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.05em;
  margin-bottom: 16px;
}

.philosophy-card p {
  font-size: 13px;
  color: var(--gray);
  line-height: 2;
}

/* --- Services --- */
.services {
  padding: 120px 0;
  background: var(--gray-bg);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
}

.service-card {
  background: var(--white);
  padding: 48px 40px;
  border: 1px solid var(--gray-light);
  transition: border-color 0.3s;
}

.service-card:hover {
  border-color: var(--black);
}

.service-icon {
  width: 48px;
  height: 48px;
  margin-bottom: 20px;
}

.service-icon svg {
  width: 100%;
  height: 100%;
}

.service-num {
  font-family: var(--font-en);
  font-size: 10px;
  font-weight: 400;
  letter-spacing: 0.2em;
  color: var(--gray);
  margin-bottom: 12px;
}

.service-card h3 {
  font-size: 18px;
  font-weight: 400;
  letter-spacing: 0.08em;
  margin-bottom: 16px;
}

.service-card p {
  font-size: 13px;
  color: var(--gray);
  line-height: 2;
  margin-bottom: 20px;
}

.service-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.service-tags li {
  font-size: 10px;
  letter-spacing: 0.05em;
  color: var(--gray);
  border: 1px solid var(--gray-light);
  padding: 4px 12px;
}

/* --- Works --- */
.works {
  padding: 120px 0;
}

.works-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.work-card {
  cursor: pointer;
}

.work-image {
  position: relative;
  overflow: hidden;
  aspect-ratio: 4/3;
  margin-bottom: 20px;
}

.work-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}

.work-card:hover .work-image img {
  transform: scale(1.05);
}

.work-overlay {
  position: absolute;
  inset: 0;
  background: rgba(10,10,10,0.4);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity 0.3s;
}

.work-card:hover .work-overlay {
  opacity: 1;
}

.work-overlay span {
  font-family: var(--font-en);
  font-size: 11px;
  letter-spacing: 0.3em;
  color: var(--white);
  border: 1px solid var(--white);
  padding: 8px 24px;
}

.work-category {
  font-size: 10px;
  letter-spacing: 0.1em;
  color: var(--gray);
  margin-bottom: 8px;
  display: block;
}

.work-info h3 {
  font-size: 15px;
  font-weight: 400;
  letter-spacing: 0.05em;
  margin-bottom: 10px;
}

.work-info p {
  font-size: 12px;
  color: var(--gray);
  line-height: 1.9;
  margin-bottom: 12px;
}

.work-meta {
  display: flex;
  gap: 16px;
  font-size: 11px;
  color: var(--gray);
}

/* --- Process --- */
.process {
  padding: 120px 0;
  background: var(--gray-bg);
}

.process-timeline {
  max-width: 680px;
  margin: 0 auto;
  position: relative;
  padding-left: 80px;
}

.process-line {
  position: absolute;
  left: 35px;
  top: 0;
  bottom: 0;
  width: 1px;
  background: var(--gray-light);
}

.process-step {
  position: relative;
  padding-bottom: 56px;
  display: flex;
  align-items: flex-start;
  gap: 32px;
}

.process-step:last-child {
  padding-bottom: 0;
}

.process-number {
  position: absolute;
  left: -80px;
  top: 0;
  width: 70px;
  font-family: var(--font-en);
  font-size: 12px;
  font-weight: 400;
  letter-spacing: 0.15em;
  color: var(--gray);
  text-align: center;
}

.process-number::after {
  content: '';
  position: absolute;
  right: -14px;
  top: 6px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--black);
}

.process-content h3 {
  font-size: 16px;
  font-weight: 400;
  letter-spacing: 0.08em;
  margin-bottom: 10px;
}

.process-content p {
  font-size: 13px;
  color: var(--gray);
  line-height: 2;
}

/* --- Commitment --- */
.commitment {
  padding: 120px 0;
  background: var(--black);
  color: var(--white);
}

.commitment-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: start;
}

.commitment-text .section-label {
  color: rgba(255,255,255,0.4);
}

.commitment-title {
  font-size: clamp(24px, 3.5vw, 32px);
  font-weight: 300;
  letter-spacing: 0.1em;
  line-height: 1.7;
  margin-bottom: 24px;
  text-align: left;
}

.commitment-desc {
  font-size: 13px;
  font-weight: 300;
  color: rgba(255,255,255,0.6);
  line-height: 2.1;
  margin-bottom: 16px;
}

.commitment-features {
  display: flex;
  flex-direction: column;
  gap: 36px;
}

.commitment-feature {
  padding-left: 24px;
  border-left: 1px solid rgba(255,255,255,0.15);
}

.commitment-feature-num {
  font-family: var(--font-en);
  font-size: 10px;
  letter-spacing: 0.2em;
  color: rgba(255,255,255,0.3);
  margin-bottom: 8px;
}

.commitment-feature h3 {
  font-size: 14px;
  font-weight: 400;
  letter-spacing: 0.05em;
  margin-bottom: 8px;
}

.commitment-feature p {
  font-size: 12px;
  color: rgba(255,255,255,0.5);
  line-height: 2;
}

/* --- Voices --- */
.voices {
  padding: 120px 0;
}

.voices-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.voice-card {
  padding: 40px;
  border: 1px solid var(--gray-light);
}

.voice-quote {
  font-family: var(--font-en);
  font-size: 48px;
  font-weight: 300;
  line-height: 1;
  color: var(--gray-light);
  margin-bottom: 8px;
}

.voice-text {
  font-size: 13px;
  line-height: 2.1;
  color: #555;
  margin-bottom: 24px;
}

.voice-author {
  border-top: 1px solid var(--gray-light);
  padding-top: 16px;
}

.voice-name {
  font-size: 13px;
  font-weight: 500;
  display: block;
  margin-bottom: 4px;
}

.voice-detail {
  font-size: 11px;
  color: var(--gray);
}

/* --- Company --- */
.company {
  padding: 120px 0;
  background: var(--gray-bg);
}

.company-table {
  max-width: 760px;
  margin: 0 auto;
}

.company-table table {
  width: 100%;
  border-collapse: collapse;
}

.company-table tr {
  border-bottom: 1px solid var(--gray-light);
}

.company-table th,
.company-table td {
  padding: 20px 16px;
  font-size: 13px;
  font-weight: 300;
  text-align: left;
  vertical-align: top;
}

.company-table th {
  width: 140px;
  color: var(--gray);
  font-weight: 400;
  letter-spacing: 0.05em;
}

/* --- Contact --- */
.contact {
  padding: 120px 0;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 40px;
}

.contact-block h3 {
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.05em;
  margin-bottom: 12px;
}

.contact-phone {
  font-family: var(--font-en);
  font-size: 28px;
  font-weight: 300;
  letter-spacing: 0.05em;
  display: block;
  margin-bottom: 4px;
}

.contact-block p {
  font-size: 12px;
  color: var(--gray);
  line-height: 1.9;
}

.contact-block ul {
  padding-left: 0;
}

.contact-block li {
  font-size: 12px;
  color: var(--gray);
  line-height: 2;
  position: relative;
  padding-left: 16px;
}

.contact-block li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 11px;
  width: 6px;
  height: 1px;
  background: var(--gray);
}

/* Form */
.contact-form {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.form-group label {
  display: block;
  font-size: 12px;
  font-weight: 400;
  letter-spacing: 0.05em;
  margin-bottom: 8px;
}

.required {
  font-size: 10px;
  color: var(--gray);
  margin-left: 4px;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--gray-light);
  background: var(--white);
  font-family: var(--font-jp);
  font-size: 14px;
  font-weight: 300;
  color: var(--black);
  outline: none;
  transition: border-color 0.3s;
  border-radius: 0;
  -webkit-appearance: none;
}

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

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: #ccc;
}

.form-group select {
  cursor: pointer;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%23888' fill='none'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 16px center;
  padding-right: 40px;
}

.form-submit {
  width: 100%;
  padding: 16px;
  background: var(--black);
  color: var(--white);
  border: 1px solid var(--black);
  font-family: var(--font-jp);
  font-size: 13px;
  font-weight: 400;
  letter-spacing: 0.15em;
  cursor: pointer;
  transition: background 0.3s, color 0.3s;
}

.form-submit:hover {
  background: var(--white);
  color: var(--black);
}

/* --- Footer --- */
.footer {
  background: var(--black);
  color: var(--white);
  padding: 64px 0 32px;
}

.footer-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
  margin-bottom: 32px;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 15px;
  font-weight: 400;
  letter-spacing: 0.1em;
}

.footer-links {
  display: flex;
  gap: 24px;
}

.footer-links a {
  font-size: 11px;
  color: rgba(255,255,255,0.5);
  letter-spacing: 0.05em;
  transition: color 0.3s;
}

.footer-links a:hover {
  color: var(--white);
  opacity: 1;
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-bottom p {
  font-size: 10px;
  color: rgba(255,255,255,0.35);
  letter-spacing: 0.05em;
}

.footer-credit a {
  color: rgba(255,255,255,0.5);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.footer-credit a:hover {
  color: var(--white);
  opacity: 1;
}

/* --- Animations --- */
.fade-up {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}

.fade-up.delay-1 { transition-delay: 0.15s; }
.fade-up.delay-2 { transition-delay: 0.3s; }
.fade-up.delay-3 { transition-delay: 0.45s; }
.fade-up.delay-4 { transition-delay: 0.6s; }

/* --- Responsive --- */
@media (max-width: 1024px) {
  .philosophy-grid {
    grid-template-columns: 1fr;
    gap: 56px;
    max-width: 400px;
    margin: 0 auto;
  }

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

  .works-grid {
    grid-template-columns: 1fr 1fr;
    gap: 24px;
  }

  .voices-grid {
    grid-template-columns: 1fr;
    max-width: 560px;
    margin: 0 auto;
  }

  .contact-grid {
    grid-template-columns: 1fr;
    gap: 48px;
  }
}

@media (max-width: 768px) {
  :root {
    --header-h: 60px;
  }

  .nav-desktop {
    display: none;
  }

  .hamburger {
    display: flex;
  }

  .numbers-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
  }

  .number-value {
    font-size: 36px;
  }

  .works-grid {
    grid-template-columns: 1fr;
    max-width: 480px;
    margin: 0 auto;
  }

  .process-timeline {
    padding-left: 60px;
  }

  .process-number {
    left: -60px;
    width: 50px;
  }

  .process-number::after {
    right: -13px;
  }

  .commitment-inner {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .commitment-title {
    text-align: center;
  }

  .commitment-desc {
    text-align: center;
  }

  .commitment-text .section-label {
    text-align: center;
  }

  .philosophy,
  .services,
  .works,
  .process,
  .voices,
  .commitment,
  .company,
  .contact {
    padding: 80px 0;
  }

  .section-lead {
    margin-bottom: 48px;
  }

  .service-card {
    padding: 32px 28px;
  }

  .voice-card {
    padding: 28px;
  }

  .footer-top {
    flex-direction: column;
    gap: 24px;
  }

  .footer-links {
    flex-wrap: wrap;
    gap: 16px;
  }

  .footer-bottom {
    flex-direction: column;
    gap: 8px;
    text-align: center;
  }

  .contact-phone {
    font-size: 24px;
  }

  .company-table th {
    width: 100px;
  }

  .company-table th,
  .company-table td {
    padding: 14px 8px;
    font-size: 12px;
  }
}

@media (max-width: 480px) {
  .hero-title {
    letter-spacing: 0.08em;
  }

  .hero-sub {
    font-size: 13px;
  }

  .number-value {
    font-size: 30px;
  }

  .service-card h3 {
    font-size: 16px;
  }

  .process-timeline {
    padding-left: 48px;
  }

  .process-number {
    left: -48px;
    width: 40px;
    font-size: 10px;
  }

  .process-number::after {
    right: -10px;
    width: 5px;
    height: 5px;
  }

  .process-line {
    left: 28px;
  }

  .company-table th {
    display: block;
    width: 100%;
    padding-bottom: 0;
    border: none;
  }

  .company-table td {
    display: block;
    padding-top: 4px;
  }

  .company-table tr {
    display: block;
    padding: 12px 0;
  }
}